WO2005088214A1 - Refrigerator - Google Patents

Refrigerator Download PDF

Info

Publication number
WO2005088214A1
WO2005088214A1 PCT/JP2005/003945 JP2005003945W WO2005088214A1 WO 2005088214 A1 WO2005088214 A1 WO 2005088214A1 JP 2005003945 W JP2005003945 W JP 2005003945W WO 2005088214 A1 WO2005088214 A1 WO 2005088214A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine room
refrigerator
compressor
top surface
opening
Prior art date
Application number
PCT/JP2005/003945
Other languages
French (fr)
Japanese (ja)
Inventor
Tetsuya Saito
Yoshito Kimura
Syouhei Inamori
Tatsuya Seo
Akihiko Manabe
Tatsuya Kawasaki
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to CN200580008538.6A priority Critical patent/CN1934400B/en
Publication of WO2005088214A1 publication Critical patent/WO2005088214A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/006General constructional features for mounting refrigerating machinery components
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/003General constructional features for cooling refrigerating machinery

Definitions

  • the present invention aims to improve safety when a flammable refrigerant is used in a refrigeration cycle
  • a conventional refrigerator of this type has, for example, the following configuration for the purpose of increasing the capacity of a refrigerator that can be used effectively without increasing the external dimensions. That is, as disclosed in Japanese Utility Model Application No. 60-156378, a condenser is arranged in a space formed by a top plate of a refrigerator and an upper wall of a heat insulating wall, and the empty space is formed. The compressor is placed in the space formed by the top plate, the outer upper rear surface of the heat insulating wall, and the back plate in communication with the space!
  • FIG. 14 is a sectional view of a conventional refrigerator
  • FIG. 15 is a perspective view of a main part of the refrigerator shown in FIG.
  • the refrigerator main body 301 has a top plate 302 having functions of a cooking table, a work table, and the like.
  • a condenser 305 is arranged in a space formed by the top plate 302 and the upper wall 304 of the heat insulating wall 303.
  • a compressor 308 is arranged in a space formed by the top plate 302, the rear upper outer surface 306 of the heat insulating wall 303, and the back plate 307.
  • the above two spaces are collectively referred to as a machine room 309.
  • an air inlet 311 for cooling the condenser 305 and the compressor 308 is provided at the front end of the machine room 309, that is, above the door 310. Further, as shown in FIG. 15, an exhaust port 312 for discharging this air into the atmosphere is provided above the compressor 308 in the machine room 309. In the machine room 309, the air heated by the condenser 305 and the compressor 308 becomes lighter, and an airflow flows from the intake port 311 to the exhaust port 312. The condenser 305 and the compressor 308 are naturally cooled by this air flow. Note that a cooling fan can be attached to an appropriate position in the machine room 309 to perform forced cooling. [0006] The exhaust port 312 protrudes the machine room 309 at a portion above the compressor 308 in order to obtain an upward airflow, and the exhaust port 312 is provided on the upper surface of the protruding portion.
  • the machine room is arranged in a portion that is not effectively used in the refrigerator storage. Therefore, it is possible to secure a volume in the refrigerator that can be effectively used as a refrigeration and freezing space without increasing the external dimensions of the refrigerator.
  • the refrigerator of the present invention has the following configuration.
  • a refrigerator main body a refrigeration cycle provided in the refrigerator main body, comprising a compressor, a condenser, a decompressor, and an evaporator to form a series of refrigerant flow paths, and a machine room provided in an upper part of the refrigerator main body.
  • the refrigeration cycle contains a flammable refrigerant that has a higher specific gravity than air.
  • the refrigerator body includes a first top surface portion and a second top surface portion provided at a position lower than the first top surface portion, and the machine room has the second top surface portion as a bottom surface, and the machine room has A surrounding wall and a back wall are provided, and at least one of the side wall and the back wall is provided with an opening communicating between the inside and the outside of the machine room, and a compressor is arranged inside the machine room.
  • the refrigerator of the present invention may have the following configuration.
  • Refrigerator body and refrigerator body A refrigeration cycle provided with a compressor, a condenser, a decompressor, and an evaporator to form a series of refrigerant flow paths; and a machine room provided at an upper portion of the refrigerator main body.
  • the refrigeration cycle is filled with a flammable refrigerant having a specific gravity heavier than air.
  • the machine room has a first top surface portion of the refrigerator main body and a second top surface portion provided in a stepped shape at a position lower than the first top surface portion as a bottom surface, and has a side wall and a back wall surrounding the machine room. And an opening communicating between the inside and the outside of the machine room is provided in at least one of the side wall and the back wall below the first top surface, and the first top surface is condensed on the first top surface.
  • the compressor is arranged on the second top panel.
  • the internal volume of the refrigerator can be increased. Also, even if the flammable refrigerant leaks from the compressor or the condenser, which becomes higher in pressure than the atmosphere during the operation of the compressor, the flammable refrigerant can be quickly released and diffused into the atmosphere without stagnation of the refrigerant in the machine room. Safety when using a flammable refrigerant can be improved.
  • FIG. 1 is a schematic sectional view of a refrigerator according to Embodiment 1 of the present invention.
  • FIG. 2 is a perspective view of a main part of the refrigerator according to Embodiment 1 of the present invention.
  • FIG. 3 is a perspective view of a machine room cover of a refrigerator according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic sectional view of a refrigerator according to a third embodiment of the present invention.
  • FIG. 5 is a schematic sectional view of a refrigerator in a third embodiment of the present invention.
  • FIG. 6 is a schematic plan view of a refrigerator according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic sectional view of a refrigerator in a fifth embodiment of the present invention.
  • FIG. 8 is a perspective view of a main part of a refrigerator in a sixth embodiment of the present invention.
  • FIG. 9 is a schematic sectional view of a refrigerator according to a seventh embodiment of the present invention.
  • FIG. 10 is a perspective view of a main part of a refrigerator in an eighth embodiment of the present invention.
  • FIG. 11 is a schematic top sectional view of a refrigerator in a ninth embodiment of the present invention.
  • FIG. 12 is an upper schematic rear view of the refrigerator in the ninth embodiment of the present invention.
  • FIG. 13 is a schematic top view of a refrigerator in a ninth embodiment of the present invention.
  • FIG. 14 is a sectional view of a conventional refrigerator.
  • FIG. 15 is a perspective view of a main part of a conventional refrigerator.
  • Machine room cover upper surface (machine room upper wall)
  • FIG. 1 is a schematic sectional view of a refrigerator according to Embodiment 1 of the present invention
  • FIG. 2 is a perspective view of a main part of the refrigerator shown in FIG.
  • the refrigerator of the present embodiment is provided in the refrigerator main body 1 and the refrigerator main body 1 and includes a compressor 8, a condenser 5, a decompressor 20, and an evaporator 22. And a refrigeration cycle 19 forming a series of refrigerant channels, and a machine room 9 provided above the refrigerator body 1.
  • the refrigeration cycle 19 is filled with a flammable refrigerant having a higher specific gravity than air.
  • the refrigerator main body 1 includes a first top surface portion 15 and a second top surface portion 17 provided at a position lower than the first top surface portion 15.
  • the machine room 9 has a second top surface 17 as a bottom surface and includes a side wall 26 and a back wall 24 surrounding the machine room 9. At least one of the side wall 26 and the back wall 24 connects the inside and outside of the machine room 19 to each other.
  • An opening 27 is provided for communicating with the compressor 8, and the compressor 8 is disposed inside the machine room 19.
  • a refrigerating compartment 13 which is a relatively high temperature compartment is provided in an upper portion
  • a freezing compartment 14 which is a relatively low temperature compartment is provided in a lower portion.
  • the refrigerator compartment 13 and the freezer compartment 14 are insulated from the surroundings by a heat insulating material such as urethane.
  • storage of food and other items is carried out through an insulated door (not shown).
  • the refrigerator compartment 13 is normally set at a temperature of 1 ° C to 5 ° C for refrigerated storage, and is set at a slightly lower temperature for improving freshness, for example, a 3 ° C force of 0 ° C.
  • the user can freely switch the temperature setting as described above depending on the stored items.
  • the temperature may be set slightly higher, for example, around 10 ° C.
  • the freezing compartment 14 is usually set at a temperature of-18 ° C for 22 ° C for freezing preservation, but at a lower temperature, for example, 30 ° C to 25 ° C in order to improve freshness. May be set.
  • the power of the machine room 9 on the top of the refrigerator body 1 The bottom surface of the machine room 9 is located at a position lower than the first top surface 15 and the first top surface 15 on the back 16 side of the refrigerator body. It is configured in a stepped manner with the second top surface portion 17 provided.
  • the condenser 5 is disposed in a space above the first top surface 15.
  • the compressor 8 is arranged in a space above the second top surface 17.
  • a resin-made machine room cover 18 that covers the condenser 5 and the compressor 8 is fixed to the refrigerator body 1 with screws or the like.
  • the section covering the machine room 9 is configured by covering with the first top surface portion 15, the second top surface portion 17, and the machine room cover 18.
  • the machine room cover 18 includes an upper surface portion 23 of the machine room cover, a rear portion 24 of the machine room cover, a front portion 25 of the machine room cover, and side surfaces 26 of the machine room cover.
  • An opening 27 is provided at a position below the condenser 5 on the rear part 24 of the machine room cover.
  • the opening 27 is provided in the rear part 24 of the machine room cover in the configuration shown in FIG. 2, it may be provided in the side part 26 of the machine room cover. Further, the opening 27 may be provided on both the rear part 24 and the side part 26 of the machine room cover.
  • the machine room 9 is covered with the upper wall 23 and surrounded by the back wall 24, the front wall 25, and the side wall 26.
  • An opening 27 is provided on a back wall 24 of the machine room 9 at a position below the condenser 5.
  • the opening 27 is provided on the back wall 24 of the machine room 9 in the configuration shown in FIG. 2, it may be provided on the side wall 26 of the machine room 9. Opening 27 is also 9 may be provided on both the back wall 24 and the side wall 26.
  • the cabillary constituting the pressure reducer 20 in the refrigeration cycle 19 may be an electronic expansion valve that can be driven by a pulse motor to freely control the flow rate of the refrigerant.
  • the high-temperature and high-pressure refrigerant discharged by the operation of the compressor 8 exchanges heat with the air above the refrigerator body 1 in the condenser 5 to radiate heat and condensate. To reach Thereafter, the pressure is reduced while exchanging heat with the suction line 21 at the cabillary 20 to reach the evaporator 22.
  • the cooling fan By the operation of the cooling fan (not shown), the cool air that has become relatively low in temperature due to the evaporating action of the refrigerant in the evaporator 22 flows into the refrigerator compartment 13 and the freezer compartment 14, and into each of the refrigerator compartments 13 and 14. Cooling takes place. The refrigerant that has exchanged heat with the air in the refrigerator compartment 13 and the freezer compartment 14 in the evaporator 22 is then sucked into the compressor 8 through the suction line 21.
  • isobutane which is a combustible refrigerant having a small global warming coefficient is used from the viewpoint of global environmental conservation.
  • This isobutane has a specific gravity approximately twice that of air at normal temperature and atmospheric pressure (specific gravity 2.04 at an absolute temperature of 300 ° C).
  • the refrigerator according to the present embodiment, if the flammable refrigerant leaks from the compressor 8 or the condenser 5 that becomes high pressure during the operation of the compressor 8, Since the opening 27 is provided, the refrigerant flowing downward into the machine room 9 can be quickly released and diffused into the atmosphere without stagnation due to a difference in specific gravity with air, and safety can be improved.
  • the opening 27 is provided at a position below the compressor 8 and the condenser 5 in the machine room cover 18. Provide The same effect can be obtained.
  • An opening 27 is provided below.
  • the refrigerating cycle 19 uses a three-way valve or a switching valve, and these functional components are disposed in the machine room 9, the wiring connecting each functional component and the control board is provided. If an opening 27 is provided at a position below a connector section (not shown) for connecting the cable and the cable, safety can be further improved.
  • the cooling air of the compressor 8 and the condenser 5 is provided.
  • the amount increases.
  • the coefficient of performance (COP) of the compressor 8 is improved by improving the cooling efficiency of the compressor 8
  • the heat dissipation capacity of the condenser 5 is improved by improving the cooling efficiency of the condenser 5, thereby reducing the power consumption of the refrigerator. it can.
  • the compressor 8 has a pipe connected to the condenser 5, that is, a pipe welded joint for connecting the refrigerant discharge pipe and the suction pipe. As described above, when the discharge pipe and the suction pipe connected to the compressor 8 are joined by welding or the like inside the machine room 9, the vibration from the compressor 8 causes a weld joint having low rigidity. Possible damage
  • the opening 27 is provided particularly below the welded portion with the discharge pipe through which the refrigerant having a pressure higher than the atmospheric pressure flows.
  • a machine room fan 29 that cools the compressor 8 and the condenser 5 is provided in the machine room 9, and the compressor 8 and the condenser 5 are forcibly air-cooled, so that the flammable refrigerant that has leaked when the flammable refrigerant has leaked out.
  • the volatile refrigerant can be instantaneously released and diffused into the atmosphere from the opening 27, and the safety can be dramatically improved.
  • the power consumption of the refrigerator can be reduced.
  • the safety can be further improved.
  • a partition plate 30 is provided for separating the space on the downstream side of the air passage of the machine room fan 29 from the space on the condenser 5 side, air flows through the shortest path than the air passage of the machine room fan 29. An air shortcut can be prevented. As a result, the compressor 8 and the condenser 5 can be cooled more efficiently, and the power consumption can be further reduced.
  • the partition plate 30 is integrated with the machine room cover 18, it is possible to more reliably prevent a shortcut of air.
  • the machine room cover front portion 25 may be a separate component that can be detached.
  • a suction port having a filter function is formed in the component.
  • dust and the like can be adhered to the front part 25 of the machine room cover and cleaning can be performed.
  • a decrease in the heat radiation capability of the condenser 5 can be minimized, so that an increase in power consumption can be suppressed.
  • the machine room cover rear part 24 is a detachable separate part, and the machine room cover 18 is made up of two parts, so that the machine 8 is a relatively small part during maintenance such as repair of the compressor 8. Workability is improved because maintenance can be performed by removing only the rear part 24 of the room cover.
  • by dividing into two parts when supplying the machine room cover 18 to the production line of the refrigerator body 1, it is possible to increase the efficiency of storing the machine room cover 18 in a container or the like that transports the machine room cover 18.
  • isobutane is used as the flammable refrigerant
  • a flammable refrigerant having a higher specific gravity than other air eg, propane, specific gravity 1.8, etc.
  • FIG. 3 is a perspective view of a machine room cover of a refrigerator according to Embodiment 2 of the present invention.
  • the second embodiment is different from the first embodiment in the following points.
  • the machine An inclined portion 31 is provided in a portion extending between the upper portion 23 of the chamber cover and the rear portion 24 of the machine room cover, and an opening 27 is provided in the inclined portion 31.
  • the inclined portion may be provided at a portion extending between the machine room cover upper surface portion 23 and the machine room cover side surface portion 26. Further, the inclined portion may be provided in both a portion extending between the machine room cover upper surface portion 23 and the machine room cover rear portion 24 and a portion extending between the machine room cover upper surface portion 23 and the machine room cover side surface portion 26.
  • An opening is provided in at least one of these oblique portions.
  • an inclined portion is provided in at least one of a portion extending between the upper wall 23 and the side wall 26 covering the machine room or a portion extending between the upper wall 23 and the back wall 24 covering the machine room.
  • An opening is provided in the slope.
  • the opening 27 of the inclined portion 31 is not closed even when the rear surface 16 of the refrigerator body 1 is pressed against a wall of a kitchen or the like, or when luggage or the like is placed on the machine room cover upper surface portion 23. .
  • the leaked refrigerant can be quickly released and diffused into the atmosphere through the opening 27, and safety can be improved.
  • the obstruction of the air flow in the machine room 9 can be suppressed to a minimum, so that the cooling efficiency of the compressor 8 and the condenser 5 is significantly improved. This does not cause a significant decrease, and an increase in the power consumption of the refrigerator can be suppressed.
  • the opening 27 of the inclined portion 31 When the opening 27 of the inclined portion 31 is provided above the compressor 8, when the flammable refrigerant leaks from the compressor 8, the opening of the inclined portion 31 is quickly operated by the action of the machine room fan 29. It can be released and diffused into the atmosphere from 27. Furthermore, the machine room fan 29 quickly removes the high heat of the compressor 8, and the surrounding hot air is not only convected by natural convection flowing upward, but also by the forced air cooling by the machine room fan 29, which reduces the cooling efficiency of the compressor 8. Improvements have been made, and the power consumption of refrigerators can be significantly reduced.
  • FIGS. 4 and 5 are schematic sectional views of a refrigerator according to Embodiment 3 of the present invention.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • the machine room cover back part 24 is disposed so as to be displaced from the back 16 of the refrigerator body 1 to the front side of the refrigerator body 1. That is, the back gap 32 is provided behind the back 16 of the refrigerator body 1. And an opening 27 is provided in the machine room cover back 24 Yes.
  • the surface of the back wall 24 of the machine room 9 is disposed on the front side of the refrigerator body 1 rather than the back surface 16 of the refrigerator body 1 and has an opening in the back wall 24 of the machine room. Is provided.
  • the machine room cover back 24 is inclined with respect to the back 16 of the refrigerator body 1.
  • the back wall 24 of the machine room 9 is inclined with respect to the back surface 16 of the refrigerator body 1.
  • the compressor 8 By determining the angle of inclination of the machine room cover rear part 24 according to the shape of the compressor 8, the compressor 8 can be installed as far as possible on the rear face 16 side of the refrigerator main body 1, The inner volume of the uppermost storage room can be increased.
  • FIG. 6 is a schematic plan view of a refrigerator according to Embodiment 4 of the present invention, as viewed from above the refrigerator.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • a portion near the side surface 33 of the refrigerator body 1 of the machine room cover back portion 24 is inclined toward the side surface 33 of the refrigerator body 1 to provide a rear inclined portion 34.
  • the corner where the side wall 26 and the back wall 24 of the machine room 9 intersect has a chamfered shape.
  • An opening 27 is formed at this corner, that is, at the rear inclined portion 34.
  • the obstruction of the air flow in the machine room 9 can be minimized, so that the cooling efficiencies of the compressor 8 and the condenser 5 are significantly improved. This does not cause a significant decrease, and an increase in the power consumption of the refrigerator can be suppressed. Also, since the opening 27 provided in the rear inclined portion 34 does not open above the refrigerator, even if falling objects such as dirt and dust are generated from above, the electrical component 28 Adhesion of foreign matter to the vicinity can be prevented, and problems such as short circuits can be avoided.
  • FIG. 7 is a schematic sectional view of a refrigerator according to Embodiment 5 of the present invention.
  • the same components as those of the first embodiment are denoted by the same reference numerals.
  • the resistance of the air passage in the machine room 9 can be significantly reduced. Can be. Thereby, even if the flammable refrigerant leaks from the condenser 5, the leaked refrigerant can be promptly released and diffused into the atmosphere through the opening 27 of the machine room cover 18, and safety can be improved. . Further, since the amount of cooling air of the compressor 8 and the condenser 5 increases, the power consumption of the refrigerator can be reduced by improving the cooling efficiency of the compressor 8 and the condenser 5. When the entire first top surface 15 is inclined toward the second top surface 17, the resistance of the air passage in the machine room 9 can be further reduced, and the safety is further improved.
  • FIG. 8 is a perspective view of a main part of a refrigerator according to Embodiment 6 of the present invention.
  • the implementation The same components as those of the first embodiment are denoted by the same reference numerals.
  • a notch is provided in the machine room cover back 24, and the opening 27 is formed by the notch.
  • the opening 27 can be provided on the same plane as the height of the second top surface portion (bottom surface of the machine room) 17, so that even if the flammable refrigerant leaks, the leaked refrigerant will remain in the machine room. Release without release.
  • the cooling efficiency of the refrigerator does not decrease, and the power consumption of the refrigerator can be reduced.
  • FIG. 9 is a schematic sectional view of a refrigerator according to Embodiment 7 of the present invention.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • the condenser 5 is disposed below the refrigerator main body 1, and the compressor 8 is disposed on the second top surface 17, so that the high-pressure pipe having a relatively high possibility of refrigerant leakage is provided.
  • the compressor 8 is disposed on the second top surface 17, so that the high-pressure pipe having a relatively high possibility of refrigerant leakage is provided.
  • the condenser 5 provided at the bottom of the refrigerator body 1 is opened below and around the air passage opening and the like, even if a refrigerant leaks, it is quickly diffused. It does not reach flammable concentration.
  • a defrosted water evaporating dish 36 and a condenser cooling fan 37 are provided at the bottom of the refrigerator body 1, and an upstream force of the wind flow by the fan is provided.
  • the machine room cover 18 that covers the compressor 8 is protruded to a position higher than the first top surface portion 15, and a suction opening 27 a is provided on the front surface of the machine room cover 18, and the machine room cover 18 is provided.
  • An opening 27 is provided in the lower part of the back of the camera.
  • FIG. 10 is a perspective view of a main part of a refrigerator according to Embodiment 8 of the present invention.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • a control board 38 for controlling the operation of the refrigerator is provided, and the control board 38 is provided on the first top surface 15.
  • the control board 38 is not necessary to provide a dedicated space for disposing the control board on the back of the refrigerator or the like, so that the inside volume of the refrigerator or the air path can be expanded. Even if the refrigerant leaks, the safety can be improved because there is no control board below the machine room when the refrigerant is discharged from the opening. Further, when the machine room fan 29 is provided, the control board 38 can be cooled by the air for cooling the compressor 8, and the control board can be prevented from overheating.
  • FIG. 11 is a schematic cross-sectional view of the upper part of the refrigerator in the ninth embodiment of the present invention
  • FIG. 12 is a schematic rear view of the upper part of the refrigerator in the ninth embodiment
  • FIG. 13 is a schematic diagram of the refrigerator in the ninth embodiment. It is a top view.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • the refrigerator main body 100 includes an inner box 101 in which a resin such as an ABS resin (a copolymer of acrylonitrile, butadiene and styrene) is vacuum-molded, and a metal material such as a pre-coated steel sheet.
  • a heat insulating wall formed by pouring a heat insulator 103 for foaming and filling the space defined by the outer box 102 used.
  • a hard urethane foam, a phenol foam, a styrene foam, or the like is used as the heat insulator 103.
  • Refrigerator body 100 is divided into a plurality of heat-insulating compartments, and has a configuration in which the upper part is a revolving door type and the lower part is a drawer type (not shown).
  • a refrigerating compartment 104 is provided at the top, and a drawer type ice making compartment, a switching compartment, a vegetable compartment, and a freezing compartment (not shown) are arranged below the refrigerating compartment 104.
  • Each heat insulation section is provided with a heat insulation door via a gasket 105.
  • the refrigerator compartment rotating door 106 is rotatably provided at the top with a hinge 107 provided on the outer top surface of the refrigerator main body 100, and each drawer door is arranged below the refrigerator 107 rotating door 106.
  • the refrigerator compartment rotating door 106 is provided with a door pocket 108 as a storage space.
  • a plurality of storage shelves 109 are provided in the refrigerator compartment.
  • the top surface of refrigerator main body 100 includes a first top surface portion 110 and a second top surface portion 111 having a concave rear portion.
  • a machine room 112 is formed above the second top surface portion 111.
  • the refrigeration cycle includes a compressor 114 elastically supported by an elastic member 113 in a machine room 112, a box-type machine room fan 115 provided near the compressor 114, and a condenser (not shown).
  • a vacuum (not shown) as a decompressor, a dryer (not shown) for removing moisture, an evaporator (not shown) provided in a refrigerator with a cooling fan arranged in the vicinity, and a suction pipe 116.
  • isobutane which is a flammable refrigerant
  • mineral oil which is a refrigerating machine oil.
  • the long diameter of the compressor 114 is arranged in the left-right direction and the connection pipe is arranged in the left-right direction in order to minimize the protrusion into the refrigerator. Further, by arranging the electric terminals covered with the cover in the left-right direction, the front-rear direction of the machine room 112 is minimized.
  • the center of the compressor 114 is arranged so that the central force of the machine room 112 is shifted in the left-right direction, and the machine room fan 115 is arranged in a widely provided space opposite to the shifted direction. are doing.
  • the second top surface 111 has a shape in which the left and right sides are raised at the bottom of the loading part of the compressor 114, and has a recess inside the refrigerator to form a space-saving cold air passage 119 with no steps inside the refrigerator. are doing.
  • the machine room fan 115 is provided on the raised step portion 120 of the second top surface portion 111, and electric components are arranged above the machine room 112, and below the electric component, which is an electrical contact of the machine room fan 115. Is provided with a space.
  • An electric valve 121 used for controlling the flow path of the refrigeration cycle is provided above the side wall of the side wall in the direction in which the compressor 114 is displaced so as to support the vibration isolation.
  • electric valve 1 Reference numeral 21 denotes a configuration in which an electric element 123 such as a motor or a solenoid is disposed above a valve body 122.An electric component having an electric contact of the electric valve 121 is disposed above a machine room 112, and a space is provided below the electric component. As a configuration provided.
  • the machine room cover 124 is opened with screws so that the upper and rear sides of the machine room 112 can be opened. It is provided. Thus, the upper and back walls of the machine room 112 are formed by the machine room cover 124.
  • the machine room cover 124 may be composed of two parts, a top cover 124a and a back cover 124b, or may be one part.
  • At least one portion of the air communication portion force such as an opening 125 provided in the machine room cover 124 or a cutout portion of the machine room cover 124 between the machine room cover 124 and the second top surface 111 is provided below the machine room 112. Since it is provided on the side, when the refrigerant leaks, the refrigerant gas stagnant below the specific gravity difference force with the air is quickly diffused into the atmosphere to prevent the flammable concentration from being reached.
  • "below machine room 112" means that it is at least below a pipe welded joint where the frequency of refrigerant gas leakage is relatively high.
  • This pipe welding joint is a part of the compressor 114 for connecting the pipe connected to the condenser.
  • the opening 125 is provided below the electrical component of the machine room fan 115, which is an electrical component, safety can be further improved. Further, since the opening 125 is provided below the electric component of the electric valve 121, safety can be further improved. Further, since the opening 125 is provided below the electric terminal of the compressor 114, safety can be further improved. As described above, the opening 125 is provided at a position below the electrical contacts of various devices housed in the machine room 112.
  • the opening 125 is provided at least in the lower part on the back side of the machine room cover 124. If the compartment formed by the insulation wall of the refrigerator body 100 and the like is formed on the side wall of the machine room 112, for example, the machine room 112 is partitioned by extending the machine room cover 124 so as to extend to the side wall. In this case, the position of the opening 125 does not necessarily need to be limited to the back wall of the machine room, and may be provided on the side surface that extends around the side wall of the machine room cover 124.
  • another opening may be provided in the upper part of the machine chamber 112 to be the suction opening 126.
  • the suction opening 126 may be provided above the first top surface 110 and at least one opening 125 is provided below the first top surface 110, the flow of air in the vertical direction is promoted.
  • the suction opening 126 is also used as a suction port for sucking outside air when the machine room fan 115 operates, so that the air suction and suction side of the machine room fan 115 is provided.
  • the top of the machine room cover 124 that is, the top cover 124a is formed in a box shape at a position about 10 to 50 mm higher than the first top 110, and the first top A suction opening 126 is provided between the top 110 and the top cover 124a with a plurality of slits.
  • the slit is provided in at least one of the front side, the side surface, and the rear surface of the suction side of the machine room fan 115 to form the suction opening 126. Since there is no opening toward the ceiling, there is no force S to put the object on and the opening is closed, and since the dust does not accumulate and accumulate, it is possible to obtain an effect that the dust is not easily removed.
  • suction opening 126 opens at the upper front side of machine room 112 as a suction opening for sucking outside air when machine room fan 115 operates.
  • the suction port for sucking outside air only needs to be located on the upstream side of the air passage where forced convection is performed by the machine room fan 115.
  • An inlet opening serving as a mouth and an opening 125 serving as an exhaust port may be formed.
  • the top surface of the compressor 114 is set at a position higher than the first top surface 110 in order to minimize the volume of the machine room 112.
  • the front heat insulating wall 127 of the machine room 112 has a length necessary for disposing the compressor 114. It has a length, and its left and right sides are slightly inclined.
  • the space inside the refrigerator is used for the cool air passage 119 in the refrigerator to reduce the ineffective volume. Therefore, the machine room 112 has a length necessary for arranging the compressor 114 at the center, up, down, front and rear, and is configured short at the left, right, up, down, front and back, and the space at the center is the largest.
  • the flammable refrigerant leaks from the left and right toward the center, it has a higher specific gravity than air, and stays so that it can be collected in the center. At this time, since the air is exhausted from the opening 125 provided below the central portion, the safety is improved more than the flammable refrigerant does not have the flammable concentration.
  • the control board 130 is provided on the rear heat insulator 135 below the machine room 112, is housed in a board housing 131 formed of a depression, and is hermetically sealed with a board cover 132. Between the substrate storage section 131 and the machine room 112, a dent is provided in the heat insulator 103 from the inside of the storage, and a lamp 133 is stored in the dent. In this way, it is not necessary to increase the step below the machine room 112. Further, since the compressor 114 is arranged so as to be minimum in the front-rear direction, the compressor 114 can be reduced without increasing the ineffective volume due to the tension inside the machine room 112.
  • Control board 130 may be arranged above first top surface 110. As a result, since the electrical components are provided above the opening 125 which is a diffusion path of the leaked refrigerant from the machine room 112, the safety is further improved.
  • the refrigerator according to the present invention can quickly release and diffuse refrigerant into the atmosphere without stagnation when leaked into the machine room, and therefore can improve safety when a flammable refrigerant is used. It is useful as a machine room configuration for storages equipped with not only household refrigerators but also commercial refrigerators and other cooling devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A refrigerator, comprising a refrigerator body, a refrigerating cycle installed in the refrigerator body, having a compressor (8), a condenser (5), a decompressor, and an evaporator, and forming a series of refrigerant flow passages, and a machine compartment formed at the upper part of the refrigerator body. An inflammable refrigerant with a specific gravity higher than that of air is sealed in the refrigerating cycle. The refrigerator body further comprises a first ceiling part (15) and a second ceiling part (17) formed at a position lower than the first ceiling part (15). The machine compartment uses the second ceiling part (17) as its bottom surface, and comprises side walls (26) and a rear wall (24) surrounding the machine compartment. Opening parts (27) allowing the inside and the outside of the machine compartment to communicate with each other are formed in at least either of the side walls (26) and the rear wall (24), and the compressor (8) is disposed in the machine compartment.

Description

明 細 書  Specification
冷蔵庫  Refrigerator
技術分野  Technical field
[0001] 本発明は、冷凍サイクルに可燃性冷媒を使用した場合の安全性向上を図るとともに The present invention aims to improve safety when a flammable refrigerant is used in a refrigeration cycle, and
、冷却効率を向上した冷蔵庫に関するものである。 And a refrigerator having improved cooling efficiency.
背景技術  Background art
[0002] 近年、冷蔵庫は地球環境保護の観点力 更なる省エネルギー化が進むとともに、 その使用性や収納性の向上が求められている。  [0002] In recent years, refrigerators are becoming more and more energy-saving in terms of protecting the global environment, and there is a demand for improved usability and storage.
[0003] 従来のこの種の冷蔵庫は、外形寸法を大きくすることなく有効的に使用できる庫内 の容積を大きくすることを目的として、例えば、次のような構成がとられている。すなわ ち、日本実用新案出願実開昭 60-156378号公報に開示されるように、冷蔵庫の天 板と、断熱壁の上壁とによって形成される空間に凝縮器を配置するとともに、この空 間と連通して、天板と、断熱壁の後方上部外面と、背板とによって形成される空間に 圧縮機を配置する構成がとられて!/ヽる。  [0003] A conventional refrigerator of this type has, for example, the following configuration for the purpose of increasing the capacity of a refrigerator that can be used effectively without increasing the external dimensions. That is, as disclosed in Japanese Utility Model Application No. 60-156378, a condenser is arranged in a space formed by a top plate of a refrigerator and an upper wall of a heat insulating wall, and the empty space is formed. The compressor is placed in the space formed by the top plate, the outer upper rear surface of the heat insulating wall, and the back plate in communication with the space!
[0004] 図 14は従来の冷蔵庫の断面図であり、図 15は図 14に示す冷蔵庫の要部斜視図 である。図 14に示すように、冷蔵庫本体 301は、調理台、作業台等の機能を有する 天板 302を有する。その天板 302と、断熱壁 303の上壁 304とによって形成される空 間には、凝縮器 305が配置されている。また、この空間と連通して、天板 302と、断熱 壁 303の後方上部外面 306と、背板 307とによって形成される空間に圧縮機 308が 配置されて 、る。上記 2つの空間を合わせて機械室 309と呼ぶ。  FIG. 14 is a sectional view of a conventional refrigerator, and FIG. 15 is a perspective view of a main part of the refrigerator shown in FIG. As shown in FIG. 14, the refrigerator main body 301 has a top plate 302 having functions of a cooking table, a work table, and the like. A condenser 305 is arranged in a space formed by the top plate 302 and the upper wall 304 of the heat insulating wall 303. Also, in communication with this space, a compressor 308 is arranged in a space formed by the top plate 302, the rear upper outer surface 306 of the heat insulating wall 303, and the back plate 307. The above two spaces are collectively referred to as a machine room 309.
[0005] 機械室 309の前端部、すなわちドア 310の上方には、凝縮器 305及び圧縮機 308 を冷却するための空気の吸気口 311が設けられている。また、図 15に示すように、機 械室 309の圧縮機 308の上方には、この空気を大気中に排出するための排気口 31 2が設けられている。機械室 309内において、凝縮器 305及び圧縮機 308により熱 せられた空気は軽くなり、吸気口 311より排気口 312へ流れる気流が生じる。この気 流によって凝縮器 305及び圧縮機 308は自然冷却される。なお、機械室 309の適宜 の位置に冷却ファンを取付け、強制冷却を行うことも可能である。 [0006] また、排気口 312は、上昇気流を得るために、圧縮機 308の上方の部分において 機械室 309を突出させ、その突出部の上面に排気口 312を設けている。 [0005] At the front end of the machine room 309, that is, above the door 310, an air inlet 311 for cooling the condenser 305 and the compressor 308 is provided. Further, as shown in FIG. 15, an exhaust port 312 for discharging this air into the atmosphere is provided above the compressor 308 in the machine room 309. In the machine room 309, the air heated by the condenser 305 and the compressor 308 becomes lighter, and an airflow flows from the intake port 311 to the exhaust port 312. The condenser 305 and the compressor 308 are naturally cooled by this air flow. Note that a cooling fan can be attached to an appropriate position in the machine room 309 to perform forced cooling. [0006] The exhaust port 312 protrudes the machine room 309 at a portion above the compressor 308 in order to obtain an upward airflow, and the exhaust port 312 is provided on the upper surface of the protruding portion.
[0007] この構成においては、機械室を冷蔵庫庫内において有効に利用されていな力つた 部分に配置している。そのため、冷蔵庫の外形寸法を大きくすることなぐ冷蔵、冷凍 スペースとして有効的に使用できる庫内の容積を確保できる。  [0007] In this configuration, the machine room is arranged in a portion that is not effectively used in the refrigerator storage. Therefore, it is possible to secure a volume in the refrigerator that can be effectively used as a refrigeration and freezing space without increasing the external dimensions of the refrigerator.
[0008] し力しながら、上記従来の構成では、冷媒として空気より比重が大き!/、可燃性冷媒 を使用した場合に次のような課題があった。すなわち、万が一、圧縮機運転時に大 気より高圧となる圧縮機又は凝縮器力 可燃性冷媒が漏洩した時、その漏洩した可 燃性冷媒が、圧縮機と凝縮器より上方に排気口が設けられていることにより、空気と の比重差により大気中に拡散せずに機械室内の下方部に滞留することがあった。  [0008] However, in the above-described conventional configuration, the following problems have been encountered when using a combustible refrigerant having a specific gravity greater than that of air as a refrigerant. That is, in the unlikely event that a flammable refrigerant leaks from the compressor or the condenser, which becomes higher in pressure during operation of the compressor, the leaked flammable refrigerant is provided with an exhaust port above the compressor and the condenser. As a result, the specific gravity difference with the air sometimes caused it to stay in the lower part of the machine room without diffusing into the atmosphere.
[0009] また、冷蔵庫天面に荷物等を置!、た場合には、排気口がふさがれるので漏洩した 可燃性冷媒が拡散せず滞留するとともに、機械室内の空気の流れが阻害されるので 圧縮機及び凝縮器の冷却が損なわれ、消費電力量が増大すると!ヽつた課題もあった 発明の開示  [0009] In addition, when luggage or the like is placed on the top of the refrigerator, the exhaust port is blocked, so that the leaked flammable refrigerant stays without diffusing, and the flow of air in the machine room is obstructed. When the cooling of the compressor and the condenser is impaired and the power consumption increases, there is also a problem.
[0010] 本発明の冷蔵庫は次の構成を有する。冷蔵庫本体と、冷蔵庫本体に備えられ、圧 縮機と凝縮器と減圧器と蒸発器とを備えて一連の冷媒流路を構成する冷凍サイクル と、冷蔵庫本体の上部に設けられた機械室とを含む。冷凍サイクルには、空気よりも 比重の重い可燃性冷媒が封入されている。冷蔵庫本体は、第一の天面部と、その第 一の天面部より低い位置に設けた第二の天面部とを備え、機械室は、その第二の天 面部を底面とし、その機械室を囲む側壁及び背壁を備え、その側壁又は背壁の少な くとも一方に機械室の内部と外部とを連通する開口部を設けるとともに、その機械室 の内部に圧縮機を配設して 、る。  [0010] The refrigerator of the present invention has the following configuration. A refrigerator main body, a refrigeration cycle provided in the refrigerator main body, comprising a compressor, a condenser, a decompressor, and an evaporator to form a series of refrigerant flow paths, and a machine room provided in an upper part of the refrigerator main body. Including. The refrigeration cycle contains a flammable refrigerant that has a higher specific gravity than air. The refrigerator body includes a first top surface portion and a second top surface portion provided at a position lower than the first top surface portion, and the machine room has the second top surface portion as a bottom surface, and the machine room has A surrounding wall and a back wall are provided, and at least one of the side wall and the back wall is provided with an opening communicating between the inside and the outside of the machine room, and a compressor is arranged inside the machine room. .
[0011] この構成により、仮に、圧縮機運転時に圧縮機又は凝縮器から空気よりも比重の重 い可燃性冷媒が漏洩したとしても、機械室を囲む側壁及び背壁に開口部を設けてい るので、機械室内に漏洩した冷媒を滞留させることなぐ速やかに大気中に放出拡散 できる。  With this configuration, even if a flammable refrigerant having a higher specific gravity than air leaks from the compressor or the condenser during the operation of the compressor, openings are provided in the side wall and the back wall surrounding the machine room. Therefore, the refrigerant leaked into the machine room can be quickly released and diffused into the atmosphere without stagnation.
[0012] また、本発明の冷蔵庫は次の構成であってもよい。冷蔵庫本体と、冷蔵庫本体に 備えられ、圧縮機と凝縮器と減圧器と蒸発器とを備えて一連の冷媒流路を構成する 冷凍サイクルと、冷蔵庫本体の上部に設けられた機械室とを含む。冷凍サイクルには 、空気よりも比重の重い可燃性冷媒が封入されている。機械室は、冷蔵庫本体の第 一の天面部と、その第一の天面部より低い位置に段差状に設けられた第二の天面部 とを底面とし、その機械室を囲む側壁及び背壁を備えるとともに、その機械室の内部 と外部とを連通する開口部を、側壁又は背壁の少なくとも一方における、第一の天面 部より下方に位置する箇所に設けるとともに、第一の天面部に凝縮器を、第二の天 面部に圧縮機を配設して 、る。 [0012] The refrigerator of the present invention may have the following configuration. Refrigerator body and refrigerator body A refrigeration cycle provided with a compressor, a condenser, a decompressor, and an evaporator to form a series of refrigerant flow paths; and a machine room provided at an upper portion of the refrigerator main body. The refrigeration cycle is filled with a flammable refrigerant having a specific gravity heavier than air. The machine room has a first top surface portion of the refrigerator main body and a second top surface portion provided in a stepped shape at a position lower than the first top surface portion as a bottom surface, and has a side wall and a back wall surrounding the machine room. And an opening communicating between the inside and the outside of the machine room is provided in at least one of the side wall and the back wall below the first top surface, and the first top surface is condensed on the first top surface. The compressor is arranged on the second top panel.
[0013] この構成により、冷媒として空気より比重が大きい可燃性冷媒を使用した場合に、 仮に、圧縮機運転時に圧縮機又は凝縮器カゝら可燃性冷媒が漏洩したとしても、段差 状に形成された機械室の側壁又は背壁の少なくとも一方における、冷蔵庫本体の第 一の天面部より下方に開口部を設けているので、空気との比重差により機械室内の 下方に流入する冷媒を滞留させることなぐ速やかに大気中に放出拡散できる。  [0013] With this configuration, when a flammable refrigerant having a specific gravity greater than that of air is used as a refrigerant, even if the flammable refrigerant leaks from the compressor or the condenser during operation of the compressor, a step-like shape is formed. An opening is provided below at least one of the side wall and the back wall of the machine room below the first top surface of the refrigerator body, so that refrigerant flowing downward in the machine room due to a difference in specific gravity with air is retained. It can be released and diffused into the atmosphere as quickly as possible.
[0014] 上記のように本発明の冷蔵庫は、機械室を冷蔵庫本体の上部に設けているので、 冷蔵庫の内容積を大きくすることができる。また、仮に、圧縮機運転時に大気より高 圧となる圧縮機もしくは凝縮器カゝら可燃性冷媒が漏洩したとしても、機械室内に冷媒 を滞留させることなく速やかに大気中に放出拡散できるので、可燃性冷媒を使用した 場合の安全性を向上することができる。  [0014] As described above, in the refrigerator of the present invention, since the machine room is provided at the upper part of the refrigerator main body, the internal volume of the refrigerator can be increased. Also, even if the flammable refrigerant leaks from the compressor or the condenser, which becomes higher in pressure than the atmosphere during the operation of the compressor, the flammable refrigerant can be quickly released and diffused into the atmosphere without stagnation of the refrigerant in the machine room. Safety when using a flammable refrigerant can be improved.
図面の簡単な説明  Brief Description of Drawings
[0015] [図 1]図 1は本発明の実施の形態 1における冷蔵庫の概略断面図である。 FIG. 1 is a schematic sectional view of a refrigerator according to Embodiment 1 of the present invention.
[図 2]図 2は本発明の実施の形態 1における冷蔵庫の要部斜視図である。  FIG. 2 is a perspective view of a main part of the refrigerator according to Embodiment 1 of the present invention.
[図 3]図 3は本発明の実施の形態 2における冷蔵庫の機械室カバーの斜視図である。  FIG. 3 is a perspective view of a machine room cover of a refrigerator according to Embodiment 2 of the present invention.
[図 4]図 4は本発明の実施の形態 3における冷蔵庫の概略断面図である。  FIG. 4 is a schematic sectional view of a refrigerator according to a third embodiment of the present invention.
[図 5]図 5は本発明の実施の形態 3における冷蔵庫の概略断面図である。  FIG. 5 is a schematic sectional view of a refrigerator in a third embodiment of the present invention.
[図 6]図 6は本発明の実施の形態 4における冷蔵庫の概略平面図である。  FIG. 6 is a schematic plan view of a refrigerator according to Embodiment 4 of the present invention.
[図 7]図 7は本発明の実施の形態 5における冷蔵庫の概略断面図である。  FIG. 7 is a schematic sectional view of a refrigerator in a fifth embodiment of the present invention.
[図 8]図 8は本発明の実施の形態 6における冷蔵庫の要部斜視図である。  FIG. 8 is a perspective view of a main part of a refrigerator in a sixth embodiment of the present invention.
[図 9]図 9は本発明の実施の形態 7における冷蔵庫の概略断面図である。 圆 10]図 10は本発明の実施の形態 8における冷蔵庫の要部斜視図である。 圆 11]図 11は本発明の実施の形態 9における冷蔵庫の上部概略断面図である。 圆 12]図 12は本発明の実施の形態 9における冷蔵庫の上部概略背面図である。 FIG. 9 is a schematic sectional view of a refrigerator according to a seventh embodiment of the present invention. [10] FIG. 10 is a perspective view of a main part of a refrigerator in an eighth embodiment of the present invention. [11] FIG. 11 is a schematic top sectional view of a refrigerator in a ninth embodiment of the present invention. [12] FIG. 12 is an upper schematic rear view of the refrigerator in the ninth embodiment of the present invention.
[図 13]図 13は本発明の実施の形態 9における冷蔵庫の概略天面図である。 FIG. 13 is a schematic top view of a refrigerator in a ninth embodiment of the present invention.
[図 14]図 14は従来の冷蔵庫の断面図である。 FIG. 14 is a sectional view of a conventional refrigerator.
[図 15]図 15は従来の冷蔵庫の要部斜視図である。 FIG. 15 is a perspective view of a main part of a conventional refrigerator.
符号の説明 Explanation of symbols
1, 100 冷蔵庫本体  1, 100 Refrigerator body
5 凝縮器  5 Condenser
8, 114 圧縮機  8, 114 compressor
9, 112 機械室  9, 112 Machine room
13, 104 冷蔵室  13, 104 Refrigerator
14 冷凍室  14 Freezer compartment
15, 110 第一の天面部  15, 110 First ceiling
16 冷蔵庫本体の背面  16 Rear of refrigerator
17, 111 第二の天面部 (機械室の底面)  17, 111 Second ceiling (bottom of machine room)
18, 124 機械室カバー  18, 124 Machine room cover
19 冷凍サイクル  19 Refrigeration cycle
20 減圧器 (キヤビラリ)  20 Pressure reducer (Kiyarari)
21 サクシヨンライン  21 Suction line
22 蒸発器  22 Evaporator
23 機械室カバーの上面部 (機械室の上壁)  23 Machine room cover upper surface (machine room upper wall)
24 機械室カバーの背面部 (機械室の背壁)  24 Rear of machine room cover (back wall of machine room)
25 機械室カバーの前面部 (機械室の前壁)  25 Front of machine room cover (front wall of machine room)
26 機械室カバーの側面部 (機械室の側壁)  26 Side of machine room cover (side wall of machine room)
27, 125 開口部  27, 125 opening
28  28
29, 115 機械室ファン 30 仕切り板 29, 115 Machine room fan 30 Partition plate
31 斜部  31 Bevel
32 背面隙間部  32 Rear clearance
33 冷蔵庫本体の側面  33 Side of refrigerator
34 背面傾斜部  34 Back slope
35 天面傾斜部  35 Top slope
36 除霜水蒸発 H  36 Defrost water evaporation H
37 凝縮器冷却ファン  37 Condenser cooling fan
38, 130 制御基板  38, 130 Control board
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0017] 以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実 施の形態によってこの発明が限定されるものではない。  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited by the embodiment.
[0018] (実施の形態 1)  (Embodiment 1)
図 1は本発明の実施の形態 1における冷蔵庫の概略断面図であり、図 2は図 1に示 す冷蔵庫の要部斜視図である。  FIG. 1 is a schematic sectional view of a refrigerator according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view of a main part of the refrigerator shown in FIG.
[0019] 図 1及び図 2に示すように、本実施形態の冷蔵庫は、冷蔵庫本体 1と、冷蔵庫本体 1に備えられ、圧縮機 8と凝縮器 5と減圧器 20と蒸発器 22とを備えて一連の冷媒流 路を構成する冷凍サイクル 19と、冷蔵庫本体 1の上部に設けられた機械室 9とを含ん でいる。冷凍サイクル 19には、空気よりも比重の重い可燃性冷媒が封入されている。 冷蔵庫本体 1は、第一の天面部 15と、その第一の天面部 15より低い位置に設けた 第二の天面部 17とを備えている。機械室 9は、第二の天面部 17を底面とし、その機 械室 9を囲む側壁 26及び背壁 24を備え、側壁 26又は背壁 24の少なくとも一方に機 械室 19の内部と外部とを連通する開口部 27を設けるとともに、その機械室 19の内部 に圧縮機 8を配設している。  As shown in FIGS. 1 and 2, the refrigerator of the present embodiment is provided in the refrigerator main body 1 and the refrigerator main body 1 and includes a compressor 8, a condenser 5, a decompressor 20, and an evaporator 22. And a refrigeration cycle 19 forming a series of refrigerant channels, and a machine room 9 provided above the refrigerator body 1. The refrigeration cycle 19 is filled with a flammable refrigerant having a higher specific gravity than air. The refrigerator main body 1 includes a first top surface portion 15 and a second top surface portion 17 provided at a position lower than the first top surface portion 15. The machine room 9 has a second top surface 17 as a bottom surface and includes a side wall 26 and a back wall 24 surrounding the machine room 9. At least one of the side wall 26 and the back wall 24 connects the inside and outside of the machine room 19 to each other. An opening 27 is provided for communicating with the compressor 8, and the compressor 8 is disposed inside the machine room 19.
[0020] さらに、冷蔵庫本体 1には、比較的高温の区画である冷蔵室 13が上方部に、比較 的低温の区画である冷凍室 14が下方部に配設されている。冷蔵室 13及び冷凍室 1 4は、例えばウレタンのような断熱材で周囲と断熱されている。また、食品等の収納物 の出し入れは断熱ドア(図示せず)を介して行われる。 [0021] 冷蔵室 13は、冷蔵保存のために通常 1°Cから 5°Cで設定されている力 保鮮性向 上のため若干低めの温度、例えば 3°C力 0°Cで設定されることもあり、使用者が、 収納物によって自由に上記のような温度設定を切り替えることを可能としている場合 もある。また、ワインや根野菜等の保鮮のために、例えば 10°C前後の若干高めの温 度設定とする場合もある。 [0020] Further, in the refrigerator main body 1, a refrigerating compartment 13 which is a relatively high temperature compartment is provided in an upper portion, and a freezing compartment 14 which is a relatively low temperature compartment is provided in a lower portion. The refrigerator compartment 13 and the freezer compartment 14 are insulated from the surroundings by a heat insulating material such as urethane. In addition, storage of food and other items is carried out through an insulated door (not shown). [0021] The refrigerator compartment 13 is normally set at a temperature of 1 ° C to 5 ° C for refrigerated storage, and is set at a slightly lower temperature for improving freshness, for example, a 3 ° C force of 0 ° C. In some cases, the user can freely switch the temperature setting as described above depending on the stored items. In addition, in order to preserve wine and root vegetables, the temperature may be set slightly higher, for example, around 10 ° C.
[0022] 一方、冷凍室 14は、冷凍保存のために通常 22°C力も— 18°Cに設定されているが 、保鮮性向上のためより低温の温度、例えば 30°Cから 25°Cに設定されることもあ る。  [0022] On the other hand, the freezing compartment 14 is usually set at a temperature of-18 ° C for 22 ° C for freezing preservation, but at a lower temperature, for example, 30 ° C to 25 ° C in order to improve freshness. May be set.
[0023] さらに、本実施形態の冷蔵庫の構成について、さらに詳細に説明する。冷蔵庫本 体 1の上面に機械室 9が構成されている力 その機械室 9の底面は、第一の天面部 1 5と、冷蔵庫本体の背面 16側における第一の天面部 15より低い位置に設けた第二 の天面部 17とで段差状に構成されている。凝縮器 5は、第一の天面部 15の上の空 間部に配設されている。圧縮機 8は、第二の天面部 17の上の空間部に配設されてい る。凝縮器 5と圧縮機 8とを覆う榭脂製の機械室カバー 18が、ビス等で冷蔵庫本体 1 に固定されている。こうして、機械室 9を覆う区画は、第一の天面部 15と、第二の天面 部 17と、機械室カバー 18とで覆うことで構成されている。  Further, the configuration of the refrigerator of the present embodiment will be described in more detail. The power of the machine room 9 on the top of the refrigerator body 1 The bottom surface of the machine room 9 is located at a position lower than the first top surface 15 and the first top surface 15 on the back 16 side of the refrigerator body. It is configured in a stepped manner with the second top surface portion 17 provided. The condenser 5 is disposed in a space above the first top surface 15. The compressor 8 is arranged in a space above the second top surface 17. A resin-made machine room cover 18 that covers the condenser 5 and the compressor 8 is fixed to the refrigerator body 1 with screws or the like. Thus, the section covering the machine room 9 is configured by covering with the first top surface portion 15, the second top surface portion 17, and the machine room cover 18.
[0024] なお、三方弁や切替弁を用いる冷凍サイクル 19の場合は、それらの機能部品が機 械室 9内に配設されて!/ヽる場合もある。  [0024] In the case of the refrigeration cycle 19 using a three-way valve or a switching valve, those functional components may be disposed in the machine room 9 in some cases.
[0025] 機械室カバー 18は、機械室カバーの上面部 23と、機械室カバーの背面部 24と、 機械室カバーの前面部 25と、機械室カバーの側面部 26とからなる。機械室カバー の背面部 24の凝縮器 5より下方に位置する箇所に開口部 27を設けている。図 2に示 す構成では開口部 27を、機械室カバーの背面部 24に設けているが、機械室カバー の側面部 26にも設けてもよい。また、開口部 27を、機械室カバーの背面部 24及び 側面部 26の両方に設けてもよい。  [0025] The machine room cover 18 includes an upper surface portion 23 of the machine room cover, a rear portion 24 of the machine room cover, a front portion 25 of the machine room cover, and side surfaces 26 of the machine room cover. An opening 27 is provided at a position below the condenser 5 on the rear part 24 of the machine room cover. Although the opening 27 is provided in the rear part 24 of the machine room cover in the configuration shown in FIG. 2, it may be provided in the side part 26 of the machine room cover. Further, the opening 27 may be provided on both the rear part 24 and the side part 26 of the machine room cover.
[0026] 上記のことを言 、替えれば、機械室 9は、上壁 23で覆われ、背壁 24、前壁 25及び 側壁 26で囲まれている。機械室 9の背壁 24において、凝縮器 5より下方に位置する 箇所に開口部 27を設けている。図 2に示す構成では開口部 27を、機械室 9の背壁 2 4に設けているが、機械室 9の側壁 26にも設けてもよい。また、開口部 27を、機械室 9の背壁 24と側壁 26の両方に設けてもよい。 In other words, the machine room 9 is covered with the upper wall 23 and surrounded by the back wall 24, the front wall 25, and the side wall 26. An opening 27 is provided on a back wall 24 of the machine room 9 at a position below the condenser 5. Although the opening 27 is provided on the back wall 24 of the machine room 9 in the configuration shown in FIG. 2, it may be provided on the side wall 26 of the machine room 9. Opening 27 is also 9 may be provided on both the back wall 24 and the side wall 26.
[0027] また、冷凍サイクル 19における減圧器 20を構成するキヤビラリは、パルスモータで 駆動し冷媒の流量を自由に制御できる電子膨張弁であってもよ 、。 In addition, the cabillary constituting the pressure reducer 20 in the refrigeration cycle 19 may be an electronic expansion valve that can be driven by a pulse motor to freely control the flow rate of the refrigerant.
[0028] 以上のように構成された本実施形態の冷蔵庫について、以下に、その動作及び作 用を説明する。 [0028] The operation and operation of the refrigerator of the present embodiment configured as described above will be described below.
[0029] 圧縮機 8の動作によって吐出された高温高圧の冷媒は、凝縮器 5にて冷蔵庫本体 1の上方の空気と熱交換して放熱するとともに凝縮液ィ匕し、減圧器 20であるキヤビラ リに至る。その後、キヤビラリ 20でサクシヨンライン 21と熱交換しながら減圧されて蒸 発器 22に至る。  The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 8 exchanges heat with the air above the refrigerator body 1 in the condenser 5 to radiate heat and condensate. To reach Thereafter, the pressure is reduced while exchanging heat with the suction line 21 at the cabillary 20 to reach the evaporator 22.
[0030] 冷却用ファン(図示せず)の動作によって、蒸発器 22内の冷媒の蒸発作用により比 較的低温となった冷気は、冷蔵室 13及び冷凍室 14に流入し、それぞれの部屋の冷 却が行われる。蒸発器 22内で、冷蔵室 13及び冷凍室 14内の空気と熱交換した冷 媒は、その後、サクシヨンライン 21を通り圧縮機 8へと吸い込まれる。  [0030] By the operation of the cooling fan (not shown), the cool air that has become relatively low in temperature due to the evaporating action of the refrigerant in the evaporator 22 flows into the refrigerator compartment 13 and the freezer compartment 14, and into each of the refrigerator compartments 13 and 14. Cooling takes place. The refrigerant that has exchanged heat with the air in the refrigerator compartment 13 and the freezer compartment 14 in the evaporator 22 is then sucked into the compressor 8 through the suction line 21.
[0031] 上述した冷凍サイクル 19の冷媒としては、地球環境保全の観点から地球温暖化係 数が小さい可燃性冷媒であるイソブタンが使用されている。このイソブタンは、空気と 比較して、常温、大気圧下で約 2倍の比重である(絶対温度 300度において、比重 2 . 04)。  [0031] As a refrigerant of the refrigeration cycle 19, isobutane which is a combustible refrigerant having a small global warming coefficient is used from the viewpoint of global environmental conservation. This isobutane has a specific gravity approximately twice that of air at normal temperature and atmospheric pressure (specific gravity 2.04 at an absolute temperature of 300 ° C).
[0032] 本実施の形態の冷蔵庫にお!、て、仮に、圧縮機 8の運転時に高圧となる圧縮機 8 又は凝縮器 5から可燃性冷媒が漏洩した場合には、凝縮器 5より下方に開口部 27を 設けているので、空気との比重差により機械室 9内の下方に流入する冷媒を滞留さ せることなぐ速やかに大気中に放出拡散でき、安全性を向上することができる。  [0032] In the refrigerator according to the present embodiment, if the flammable refrigerant leaks from the compressor 8 or the condenser 5 that becomes high pressure during the operation of the compressor 8, Since the opening 27 is provided, the refrigerant flowing downward into the machine room 9 can be quickly released and diffused into the atmosphere without stagnation due to a difference in specific gravity with air, and safety can be improved.
[0033] また、冷凍サイクル 19内で高圧機器である圧縮機 8及び凝縮器 5を冷蔵庫上部に 配置することにより、可燃性冷媒が圧縮機 8及び凝縮器 5から漏洩した場合でも、空 気との比重差で台所等の床面方向へ冷媒が移動する過程で拡散する。したがって、 冷蔵庫底面に圧縮機 8及び凝縮器 5を配設する冷蔵庫と比較すると安全性を向上す ることがでさる。  [0033] Further, by arranging the compressor 8 and the condenser 5, which are high-pressure equipment, in the upper part of the refrigerator in the refrigeration cycle 19, even if the flammable refrigerant leaks from the compressor 8 and the condenser 5, the air and the air are removed. Due to the specific gravity difference, the refrigerant diffuses in the process of moving toward the floor surface of the kitchen or the like. Therefore, safety can be improved as compared with a refrigerator in which the compressor 8 and the condenser 5 are arranged on the bottom of the refrigerator.
[0034] なお、圧縮機 8と凝縮器 5とが同一平面上に配設されている場合でも、機械室カバ 一 18において、圧縮機 8及び凝縮器 5より下方に位置する箇所に開口部 27を設ける と同様の効果が得られる。 [0034] Even when the compressor 8 and the condenser 5 are arranged on the same plane, the opening 27 is provided at a position below the compressor 8 and the condenser 5 in the machine room cover 18. Provide The same effect can be obtained.
[0035] また、可燃性冷媒の着火源となる可能性のある圧縮機 8の電気接点、すなわち、圧 縮機 8へ駆動電圧を供給するコネクタ部(図示せず)を収納する電装部 28よりも下方 に開口部 27を設けている。この構成により、空気との比重差により機械室 9内の下方 に流入する冷媒を電装部 28付近に滞留させることなぐ速やかに大気中に放出拡散 でき、さらに安全性を向上することができる。  [0035] Further, an electrical contact portion of the compressor 8, which may be a source of ignition of the flammable refrigerant, that is, an electrical component portion 28 housing a connector portion (not shown) for supplying a drive voltage to the compressor 8 An opening 27 is provided below. With this configuration, the refrigerant flowing downward in the machine room 9 due to the difference in specific gravity from the air can be quickly released and diffused into the atmosphere without staying in the vicinity of the electrical unit 28, and safety can be further improved.
[0036] なお、冷凍サイクル 19が、三方弁や切替弁を用いるものであり、これらの機能部品 が機械室 9内に配設されている場合は、それぞれの機能部品と制御基板へ繋がる配 線とを接続するコネクタ部(図示せず)よりも下方に位置する箇所に開口部 27を設け るとさらに安全性を向上することができる。  [0036] When the refrigerating cycle 19 uses a three-way valve or a switching valve, and these functional components are disposed in the machine room 9, the wiring connecting each functional component and the control board is provided. If an opening 27 is provided at a position below a connector section (not shown) for connecting the cable and the cable, safety can be further improved.
[0037] また、機械室カバー上面部 23、機械室カバー背面部 24、機械室カバー前面部 25 、機械室カバー側面部 26に適宜開口部を設けると、圧縮機 8及び凝縮器 5の冷却風 量が増加する。その結果、圧縮機 8の冷却効率向上により圧縮機 8の成績係数 (CO P)が向上するとともに、凝縮器 5の冷却効率向上により凝縮器 5の放熱能力が向上し 冷蔵庫の消費電力量を低減できる。  If openings are provided in the machine room cover upper surface 23, the machine room cover rear 24, the machine room cover front 25, and the machine room cover side 26, the cooling air of the compressor 8 and the condenser 5 is provided. The amount increases. As a result, the coefficient of performance (COP) of the compressor 8 is improved by improving the cooling efficiency of the compressor 8, and the heat dissipation capacity of the condenser 5 is improved by improving the cooling efficiency of the condenser 5, thereby reducing the power consumption of the refrigerator. it can.
[0038] また、圧縮機 8は、凝縮器 5に接続される配管、すなわち、冷媒の吐出配管及び吸 入配管を連結するための配管溶接接合部を有している。このように、圧縮機 8へと接 続する吐出配管及び吸入配管を機械室 9の内部で溶接等にて接合している場合は 、圧縮機 8からの振動により、剛性の弱い溶接接合部が破損する可能性も考えられる  [0038] The compressor 8 has a pipe connected to the condenser 5, that is, a pipe welded joint for connecting the refrigerant discharge pipe and the suction pipe. As described above, when the discharge pipe and the suction pipe connected to the compressor 8 are joined by welding or the like inside the machine room 9, the vibration from the compressor 8 causes a weld joint having low rigidity. Possible damage
[0039] したがって、特に大気圧よりも高圧力の冷媒が流れている吐出配管との溶接部より も下方に開口部 27を設ける。そうすることにより、仮に冷媒が溶接部力も漏洩したとし ても、冷媒を滞留させることなぐ速やかに大気中に放出拡散でき、さらに安全性を向 上することができる。 [0039] Therefore, the opening 27 is provided particularly below the welded portion with the discharge pipe through which the refrigerant having a pressure higher than the atmospheric pressure flows. By doing so, even if the refrigerant leaks welding power, the refrigerant can be released and diffused into the atmosphere quickly without retaining the refrigerant, and safety can be further improved.
[0040] また、機械室 9内に圧縮機 8及び凝縮器 5を冷却する機械室ファン 29を備え、圧縮 機 8及び凝縮器 5を強制空冷することにより、可燃性冷媒の漏洩時に漏洩した可燃 性冷媒を瞬時に開口部 27より大気中に放出拡散でき、安全性を飛躍的に向上する ことができる。さらに、圧縮機 8と凝縮器 5の冷却効率向上により冷蔵庫の消費電力量 を低減できる。 [0040] Further, a machine room fan 29 that cools the compressor 8 and the condenser 5 is provided in the machine room 9, and the compressor 8 and the condenser 5 are forcibly air-cooled, so that the flammable refrigerant that has leaked when the flammable refrigerant has leaked out. The volatile refrigerant can be instantaneously released and diffused into the atmosphere from the opening 27, and the safety can be dramatically improved. In addition, by improving the cooling efficiency of the compressor 8 and the condenser 5, the power consumption of the refrigerator Can be reduced.
[0041] さらに、開口部 27を機械室ファン 29に備えられた電気接点よりも下方に位置する 箇所に設けることにより、さらに安全性を向上することができる。  Further, by providing the opening 27 at a position below the electric contact provided in the machine room fan 29, the safety can be further improved.
[0042] なお、機械室ファン 29の風路下流側空間と凝縮器 5側空間とを仕切るための仕切 り板 30を設けると、機械室ファン 29の風路よりも最短経路を空気が流れるといった空 気のショートカットを防止することができる。その結果、さらに効率良ぐ圧縮機 8及び 凝縮器 5の冷却が可能となり、更なる消費電力量の低減ができる。ここで、仕切り板 3 0を機械室カバー 18と一体型とすると、より確実に空気のショートカットを防止すること ができる。  [0042] If a partition plate 30 is provided for separating the space on the downstream side of the air passage of the machine room fan 29 from the space on the condenser 5 side, air flows through the shortest path than the air passage of the machine room fan 29. An air shortcut can be prevented. As a result, the compressor 8 and the condenser 5 can be cooled more efficiently, and the power consumption can be further reduced. Here, if the partition plate 30 is integrated with the machine room cover 18, it is possible to more reliably prevent a shortcut of air.
[0043] また、機械室カバー前面部 25を脱着可能な別部品としてもよい。そして、その部品 にはフィルター機能を有した吸い込み口が形成されている。これにより、機械室カバ 一前面部 25に埃等を付着させるができるとともに清掃が可能となる。その結果、凝縮 器 5への埃等の付着による機械室 9内の風路抵抗の増大を防止できるので、たとえ 可燃性冷媒が漏洩した場合でも、その放出拡散に十分な風量を確保することができ る。さらに、埃等の多い環境下で冷蔵庫が使用された場合でも凝縮器 5の放熱能力 低下を最小限に留めることができるので、消費電力量の増大を抑制できる。  [0043] Further, the machine room cover front portion 25 may be a separate component that can be detached. In addition, a suction port having a filter function is formed in the component. As a result, dust and the like can be adhered to the front part 25 of the machine room cover and cleaning can be performed. As a result, it is possible to prevent the air path resistance in the machine room 9 from increasing due to the attachment of dust and the like to the condenser 5, so that even if the flammable refrigerant leaks, it is possible to secure a sufficient amount of air to discharge and diffuse the flammable refrigerant. it can. Furthermore, even when the refrigerator is used in an environment with a lot of dust and the like, a decrease in the heat radiation capability of the condenser 5 can be minimized, so that an increase in power consumption can be suppressed.
[0044] また、機械室カバー背面部 24を脱着可能な別部品とし、機械室カバー 18を 2部品 構成とすることにより、圧縮機 8の修理等のメンテナンス時に、比較的小さい部品であ る機械室カバー背面部 24のみを外してメンテナンスができるので作業性が向上する 。また、 2つの部品に分けることにより、冷蔵庫本体 1の製造ラインへ機械室カバー 18 を供給する際に、機械室カバー 18を搬送するコンテナ等への収納効率を上げること ができる。  [0044] In addition, the machine room cover rear part 24 is a detachable separate part, and the machine room cover 18 is made up of two parts, so that the machine 8 is a relatively small part during maintenance such as repair of the compressor 8. Workability is improved because maintenance can be performed by removing only the rear part 24 of the room cover. In addition, by dividing into two parts, when supplying the machine room cover 18 to the production line of the refrigerator body 1, it is possible to increase the efficiency of storing the machine room cover 18 in a container or the like that transports the machine room cover 18.
[0045] なお、可燃性冷媒としてイソブタンを使用としたが他の空気より比重の重い可燃性 冷媒 (例えばプロパン、比重 1. 8等)を使用する場合もある。  [0045] Although isobutane is used as the flammable refrigerant, a flammable refrigerant having a higher specific gravity than other air (eg, propane, specific gravity 1.8, etc.) may be used.
[0046] (実施の形態 2) (Embodiment 2)
図 3は本発明の実施の形態 2における冷蔵庫の機械室カバーの斜視図である。図 FIG. 3 is a perspective view of a machine room cover of a refrigerator according to Embodiment 2 of the present invention. Figure
3において、実施の形態 1と同一構成については同一符号を付す。 In 3, the same components as those of the first embodiment are denoted by the same reference numerals.
[0047] 本実施の形態 2が、実施の形態 1と異なる点は次の通りである。図 3において、機械 室カバー上面部 23と機械室カバー背面部 24に渡る部分に斜部 31を設け、斜部 31 に開口部 27を設けている。なお、斜部は、機械室カバー上面部 23と機械室カバー 側面部 26に渡る部分に設けてもよい。また、斜部は、機械室カバー上面部 23と機械 室カバー背面部 24に渡る部分と、機械室カバー上面部 23と機械室カバー側面部 2 6に渡る部分の両方に設けてもよい。そして、これら斜部の少なくとも 1つに開口部を 設ける。 [0047] The second embodiment is different from the first embodiment in the following points. In Figure 3, the machine An inclined portion 31 is provided in a portion extending between the upper portion 23 of the chamber cover and the rear portion 24 of the machine room cover, and an opening 27 is provided in the inclined portion 31. The inclined portion may be provided at a portion extending between the machine room cover upper surface portion 23 and the machine room cover side surface portion 26. Further, the inclined portion may be provided in both a portion extending between the machine room cover upper surface portion 23 and the machine room cover rear portion 24 and a portion extending between the machine room cover upper surface portion 23 and the machine room cover side surface portion 26. An opening is provided in at least one of these oblique portions.
[0048] 上記のことを言い替えれば、機械室を覆う上壁 23と側壁 26に渡る部分、又は、機 械室を覆う上壁 23と背壁 24に渡る部分の少なくとも一方に斜部を設け、その斜部に 開口部を設けている。  In other words, an inclined portion is provided in at least one of a portion extending between the upper wall 23 and the side wall 26 covering the machine room or a portion extending between the upper wall 23 and the back wall 24 covering the machine room. An opening is provided in the slope.
[0049] この構成により、冷蔵庫本体 1の背面 16を台所等の壁に押し付けて設置した場合 や機械室カバー上面部 23に荷物等を置いた場合でも、斜部 31の開口部 27は閉塞 されない。その結果、たとえ可燃性冷媒が漏洩したとしても、その漏洩した冷媒を速 やかに開口部 27より大気中に放出拡散でき、安全性を向上することができる。  [0049] With this configuration, the opening 27 of the inclined portion 31 is not closed even when the rear surface 16 of the refrigerator body 1 is pressed against a wall of a kitchen or the like, or when luggage or the like is placed on the machine room cover upper surface portion 23. . As a result, even if the flammable refrigerant leaks, the leaked refrigerant can be quickly released and diffused into the atmosphere through the opening 27, and safety can be improved.
[0050] また、上述したような冷蔵庫の使用条件下においても、機械室 9内の空気の流れの 阻害を最小限に押さえることができるので、圧縮機 8及び凝縮器 5の冷却効率の著し い低下は生じず、冷蔵庫の消費電力量の増大を抑制できる。  [0050] Further, even under the above-described use conditions of the refrigerator, the obstruction of the air flow in the machine room 9 can be suppressed to a minimum, so that the cooling efficiency of the compressor 8 and the condenser 5 is significantly improved. This does not cause a significant decrease, and an increase in the power consumption of the refrigerator can be suppressed.
[0051] なお、斜部 31の開口部 27を圧縮機 8の上方に設けると、圧縮機 8より可燃性冷媒 が漏洩した場合に機械室ファン 29の作用により、速やかに斜部 31の開口部 27より 大気中に放出拡散できる。さらに、機械室ファン 29によって、高熱となる圧縮機 8の 熱が速やかに奪われ、周囲の熱い空気は上方へと流れる自然対流に加え、機械室 ファン 29による強制空冷によって圧縮機 8の冷却効率向上がなされ、冷蔵庫の消費 電力量を大幅に低減できる。  When the opening 27 of the inclined portion 31 is provided above the compressor 8, when the flammable refrigerant leaks from the compressor 8, the opening of the inclined portion 31 is quickly operated by the action of the machine room fan 29. It can be released and diffused into the atmosphere from 27. Furthermore, the machine room fan 29 quickly removes the high heat of the compressor 8, and the surrounding hot air is not only convected by natural convection flowing upward, but also by the forced air cooling by the machine room fan 29, which reduces the cooling efficiency of the compressor 8. Improvements have been made, and the power consumption of refrigerators can be significantly reduced.
[0052] (実施の形態 3)  (Embodiment 3)
図 4及び図 5は本発明の実施の形態 3における冷蔵庫の概略断面図である。なお、 実施の形態 1と同一構成については同一符号を付す。  4 and 5 are schematic sectional views of a refrigerator according to Embodiment 3 of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals.
[0053] 図 4において、機械室カバー背面部 24を、冷蔵庫本体 1の背面 16よりも冷蔵庫本 体 1の前面側にずらして配設している。すなわち、冷蔵庫本体 1の背面 16の後ろに 背面隙間部 32を設けている。そして、機械室カバー背面部 24に開口部 27を設けて いる。 In FIG. 4, the machine room cover back part 24 is disposed so as to be displaced from the back 16 of the refrigerator body 1 to the front side of the refrigerator body 1. That is, the back gap 32 is provided behind the back 16 of the refrigerator body 1. And an opening 27 is provided in the machine room cover back 24 Yes.
[0054] 上記のことを言い替えれば、機械室 9の背壁 24の面は、冷蔵庫本体 1の背面 16よ りも冷蔵庫本体 1の前面側に配設され、機械室の背壁 24に開口部を設けている。  In other words, the surface of the back wall 24 of the machine room 9 is disposed on the front side of the refrigerator body 1 rather than the back surface 16 of the refrigerator body 1 and has an opening in the back wall 24 of the machine room. Is provided.
[0055] この構成により、冷蔵庫本体 1の背面 16を台所等の壁に押し付けて設置した場合 でも、機械室カバー背面部 24の開口部 27は閉塞されないので、たとえ可燃性冷媒 が漏洩したとしても、その漏洩した冷媒を速やかに開口部 27より大気中に放出拡散 でき、安全性を向上することができる。また、上述したような冷蔵庫の使用条件下にお いても、機械室 9内の空気の流れは阻害されることはないので、圧縮機 8及び凝縮器 5の冷却効率の低下は生じず、冷蔵庫の消費電力量の増大を抑制できる。  [0055] With this configuration, even when the rear surface 16 of the refrigerator body 1 is pressed against a wall of a kitchen or the like, the opening 27 of the machine room cover rear portion 24 is not closed, so even if the flammable refrigerant leaks. In addition, the leaked refrigerant can be promptly released and diffused into the atmosphere from the opening 27, and safety can be improved. In addition, even under the above-described conditions of use of the refrigerator, the flow of air in the machine room 9 is not obstructed, so that the cooling efficiency of the compressor 8 and the condenser 5 does not decrease, and Increase in power consumption of the device can be suppressed.
[0056] また、図 5に示すように、機械室カバー背面部 24を、冷蔵庫本体 1の背面 16に対し て傾斜させている。言い替えれば、機械室 9の背壁 24を、冷蔵庫本体 1の背面 16に 対して傾斜させている。この構成により、上記と同様の効果に加えて、機械室カバー 背面部 24、すなわち、機械室 9の背壁 24の面積を拡大できるので開口部 27の開口 面積も大きくできる。  Further, as shown in FIG. 5, the machine room cover back 24 is inclined with respect to the back 16 of the refrigerator body 1. In other words, the back wall 24 of the machine room 9 is inclined with respect to the back surface 16 of the refrigerator body 1. With this configuration, in addition to the same effects as described above, the area of the rear part 24 of the machine room cover, that is, the area of the back wall 24 of the machine room 9 can be increased, so that the opening area of the opening 27 can be increased.
[0057] これにより、たとえ可燃性冷媒が漏洩したとしても、その漏洩した冷媒をさらに速や 力に開口部 27より大気中に放出拡散でき、安全性をより向上することができる。また 、開口部 27の開口面積拡大により機械室 9内の冷却風量が増大するので、圧縮機 8 及び凝縮器 5の冷却効率がさらに向上し冷蔵庫の消費電力量を低減できる。  [0057] With this, even if the flammable refrigerant leaks, the leaked refrigerant can be released and diffused into the atmosphere through the opening 27 at a higher speed and power, and safety can be further improved. In addition, since the amount of cooling air in the machine room 9 increases due to the increase in the opening area of the opening 27, the cooling efficiency of the compressor 8 and the condenser 5 is further improved, and the power consumption of the refrigerator can be reduced.
[0058] なお、圧縮機 8の形状に合わせて機械室カバー背面部 24の傾斜角度を決めること により、圧縮機 8を最大限に冷蔵庫本体 1の背面 16側にずらして設置することができ 、最上段の貯蔵室の内容積を大きくできる。  [0058] By determining the angle of inclination of the machine room cover rear part 24 according to the shape of the compressor 8, the compressor 8 can be installed as far as possible on the rear face 16 side of the refrigerator main body 1, The inner volume of the uppermost storage room can be increased.
[0059] (実施の形態 4)  (Embodiment 4)
図 6は本発明の実施の形態 4における冷蔵庫の概略平面図であり、冷蔵庫上方か ら見たものである。なお、実施の形態 1と同一構成については同一符号を付す。  FIG. 6 is a schematic plan view of a refrigerator according to Embodiment 4 of the present invention, as viewed from above the refrigerator. The same components as those in the first embodiment are denoted by the same reference numerals.
[0060] 機械室カバー背面部 24の冷蔵庫本体 1の側面 33近傍部を、冷蔵庫本体 1の側面 33側に傾斜させ、背面傾斜部 34を設けている。言い替えれば、機械室 9の側壁 26と 背壁 24とが交わる角は面取り形状となっている。この角、すなわち、背面傾斜部 34 に開口部 27が形成されている。 [0061] この構成により、冷蔵庫本体 1の背面 16を台所等の壁に押し付けて設置した場合 でも、背面傾斜部 34の開口部 27は閉塞されないので、たとえ可燃性冷媒が漏洩し たとしても、その漏洩した可燃性冷媒を速やかに開口部 27より大気中に放出拡散で き、安全性を向上することができる。 [0060] A portion near the side surface 33 of the refrigerator body 1 of the machine room cover back portion 24 is inclined toward the side surface 33 of the refrigerator body 1 to provide a rear inclined portion 34. In other words, the corner where the side wall 26 and the back wall 24 of the machine room 9 intersect has a chamfered shape. An opening 27 is formed at this corner, that is, at the rear inclined portion 34. [0061] With this configuration, even when the rear surface 16 of the refrigerator body 1 is pressed against a wall of a kitchen or the like, the opening 27 of the rear inclined portion 34 is not closed, so even if the flammable refrigerant leaks, The leaked combustible refrigerant can be promptly released and diffused into the atmosphere through the opening 27, and safety can be improved.
[0062] また、上述したような冷蔵庫の使用条件下においても、機械室 9内の空気の流れの 阻害を最小限に押さえることができるので、圧縮機 8及び凝縮器 5の冷却効率の著し い低下は生じず、冷蔵庫の消費電力量の増大を抑制できる。また、背面傾斜部 34に 設けた開口部 27は冷蔵庫の上方に対しては開口しない仕様となるので、上方よりゴ ミ、埃等の落下物が生じた場合でも、圧縮機 8の電装部 28近傍への異物付着を防止 でき、ショート等の不具合を回避できる。  [0062] Further, even under the above-described use condition of the refrigerator, the obstruction of the air flow in the machine room 9 can be minimized, so that the cooling efficiencies of the compressor 8 and the condenser 5 are significantly improved. This does not cause a significant decrease, and an increase in the power consumption of the refrigerator can be suppressed. Also, since the opening 27 provided in the rear inclined portion 34 does not open above the refrigerator, even if falling objects such as dirt and dust are generated from above, the electrical component 28 Adhesion of foreign matter to the vicinity can be prevented, and problems such as short circuits can be avoided.
[0063] なお、機械室カバー 18と同様に、冷蔵庫本体 1の背面 16の冷蔵庫本体 1の側面 3 3近傍部を、冷蔵庫本体 1の側面 33側に傾斜させると、冷蔵庫本体 1の背面 16を台 所等の壁に押し付けて設置した場合でも冷蔵庫本体の背面 16側に風路となる隙間 ができるので、背面傾斜部 34の開口部 27より放出された冷媒をさらに速やかに拡散 できる。 As in the case of the machine room cover 18, when the vicinity of the side surface 33 of the refrigerator body 1 on the rear surface 16 of the refrigerator body 1 is inclined toward the side surface 33 of the refrigerator body 1, the rear surface 16 of the refrigerator body 1 Even when the refrigerator is installed by being pressed against a wall such as a base, a gap serving as an air path is formed on the rear surface 16 side of the refrigerator body, so that the refrigerant discharged from the opening 27 of the rear inclined portion 34 can be more quickly diffused.
[0064] (実施の形態 5)  (Embodiment 5)
図 7は本発明の実施の形態 5における冷蔵庫の概略断面図である。なお、実施の 形態 1と同一構成については同一符号を付す。  FIG. 7 is a schematic sectional view of a refrigerator according to Embodiment 5 of the present invention. The same components as those of the first embodiment are denoted by the same reference numerals.
[0065] 第一の天面部 15の後方部を、第二の天面部 17側に傾斜させ、天面傾斜部 35を 設けることにより、機械室 9内の風路の抵抗を大幅に低減することができる。これによ り、たとえ凝縮器 5から可燃性冷媒が漏洩した場合でも、その漏洩した冷媒を速やか に機械室カバー 18の開口部 27より大気中に放出拡散でき、安全性を向上すること ができる。また、圧縮機 8及び凝縮器 5の冷却風量が増大するので、圧縮機 8と凝縮 器 5の冷却効率向上により冷蔵庫の消費電力量を低減できる。なお、第一の天面部 15全体を第二の天面部 17側に傾斜させると、機械室 9内の風路の抵抗をさらに低 減でき、より安全性が向上する。  [0065] By inclining the rear portion of the first top surface portion 15 toward the second top surface portion 17 and providing the top surface inclined portion 35, the resistance of the air passage in the machine room 9 can be significantly reduced. Can be. Thereby, even if the flammable refrigerant leaks from the condenser 5, the leaked refrigerant can be promptly released and diffused into the atmosphere through the opening 27 of the machine room cover 18, and safety can be improved. . Further, since the amount of cooling air of the compressor 8 and the condenser 5 increases, the power consumption of the refrigerator can be reduced by improving the cooling efficiency of the compressor 8 and the condenser 5. When the entire first top surface 15 is inclined toward the second top surface 17, the resistance of the air passage in the machine room 9 can be further reduced, and the safety is further improved.
[0066] (実施の形態 6)  (Embodiment 6)
図 8は本発明の実施の形態 6における冷蔵庫の要部斜視図である。なお、実施の 形態 1と同一構成については同一符号を示す。 FIG. 8 is a perspective view of a main part of a refrigerator according to Embodiment 6 of the present invention. The implementation The same components as those of the first embodiment are denoted by the same reference numerals.
[0067] 図 8において、機械室カバー背面部 24に切り欠きを設けて、その切り欠きの部分を もって開口部 27としている。これにより、第二の天面部 (機械室の底面) 17の高さと同 一平面上に開口部 27を設けることができるので、たとえ可燃性冷媒が漏洩した場合 でも、その漏洩した冷媒が機械室内で滞留することなく放出開放できる。さらに第二 の天面上 17に堆積した埃を容易に庫外へと放出することが可能となり、埃堆積によ る機械室温度の上昇を防止することができ、圧縮機 8、凝縮器 5の冷却効率が低下 せず、冷蔵庫の消費電力量を抑制できる。  In FIG. 8, a notch is provided in the machine room cover back 24, and the opening 27 is formed by the notch. As a result, the opening 27 can be provided on the same plane as the height of the second top surface portion (bottom surface of the machine room) 17, so that even if the flammable refrigerant leaks, the leaked refrigerant will remain in the machine room. Release without release. Furthermore, it is possible to easily discharge dust accumulated on the second top surface 17 to the outside of the refrigerator, prevent a rise in the temperature of the machine room due to dust accumulation, and provide a compressor 8 and a condenser 5. The cooling efficiency of the refrigerator does not decrease, and the power consumption of the refrigerator can be reduced.
[0068] (実施の形態 7)  (Embodiment 7)
図 9は本発明の実施の形態 7における冷蔵庫の概略断面図である。なお、実施の 形態 1と同一構成については同一符号を示す。  FIG. 9 is a schematic sectional view of a refrigerator according to Embodiment 7 of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals.
[0069] 図 9において、凝縮器 5を冷蔵庫本体 1の下に配設し、第二の天面部 17上に圧縮 機 8を配設することによって、比較的冷媒漏洩の可能性が高い高圧配管を分散させ て配置することで、高圧配管近傍にある電装部品の個数を削減することが可能であり 、より安全性が高められる。  [0069] In Fig. 9, the condenser 5 is disposed below the refrigerator main body 1, and the compressor 8 is disposed on the second top surface 17, so that the high-pressure pipe having a relatively high possibility of refrigerant leakage is provided. By distributing the components, it is possible to reduce the number of electrical components in the vicinity of the high-pressure pipe, and safety is further improved.
[0070] また、冷蔵庫本体 1の底部に設けた凝縮器 5は、その下方や周辺が風路開口部な どで開放されているために、万が一、冷媒漏洩があった場合でも速やかに拡散され、 可燃濃度に至ることがない。  [0070] In addition, since the condenser 5 provided at the bottom of the refrigerator body 1 is opened below and around the air passage opening and the like, even if a refrigerant leaks, it is quickly diffused. It does not reach flammable concentration.
[0071] また、冷蔵庫本体 1の底部に除霜水蒸発皿 36及び凝縮器冷却ファン 37を配設し、 ファンによる風の流れの上流側力 凝縮器 5、除霜水蒸発皿 36、冷却ファン 37の順 で配置したので、凝縮器 5と熱交換を行い、温度が上昇した空気で除霜水の蒸発促 進を行うことが可能となる。  [0071] Further, a defrosted water evaporating dish 36 and a condenser cooling fan 37 are provided at the bottom of the refrigerator body 1, and an upstream force of the wind flow by the fan is provided. The condenser 5, the defrosted water evaporating dish 36, the cooling fan Since they are arranged in the order of 37, it is possible to perform heat exchange with the condenser 5 and to promote the evaporation of the defrost water with the air whose temperature has increased.
[0072] また、圧縮機 8を覆う機械室カバー 18を第一の天面部 15よりも高い位置まで突出さ せ、機械室カバー 18の前面部に吸入開口部 27aを設けるとともに、機械室カバー 18 の背面下方部に開口部 27を設けている。この構成により、機械室カバー 18の天面 部に開口部を設けることと比べて埃が堆積しにくぐまた上部に荷物を置いた場合で も開口部が閉塞されず、機械室 9の空気の対流を阻害させない風路確保ができる。  Further, the machine room cover 18 that covers the compressor 8 is protruded to a position higher than the first top surface portion 15, and a suction opening 27 a is provided on the front surface of the machine room cover 18, and the machine room cover 18 is provided. An opening 27 is provided in the lower part of the back of the camera. With this configuration, compared to providing an opening at the top of the machine room cover 18, the opening is not blocked even when dust accumulates and luggage is placed on the top, and the air in the machine room 9 is not blocked. A wind path that does not hinder convection can be secured.
[0073] これにより、万が一の冷媒漏洩時にも、機械室 9に吸入開口部 27a及び排出の開 口部 27が、機械室カバー 18に確保されているので、埃や異物による閉塞がされにく くより安全性を高めることができる。さらに、圧縮機 8又は機械室 9の過熱をも防止でき る。 Thus, even in the event of a refrigerant leak, the suction opening 27a and the discharge Since the opening 27 is secured in the machine room cover 18, the safety can be further improved without being blocked by dust or foreign matter. Further, overheating of the compressor 8 or the machine room 9 can be prevented.
[0074] (実施の形態 8)  (Embodiment 8)
図 10は本発明の実施の形態 8における冷蔵庫の要部斜視図である。なお、実施の 形態 1と同一構成については同一符号を示す。  FIG. 10 is a perspective view of a main part of a refrigerator according to Embodiment 8 of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals.
[0075] 図 10において、冷蔵庫の動作を制御するための制御基板 38を備え、その制御基 板 38を第一の天面部 15の上に配設している。これにより、冷蔵庫の背面などに制御 基板を配置するための専用の空間を設ける必要がなくなるので庫内容積の拡大、又 は風路の拡大が可能となる。また、たとえ冷媒が漏洩したとしても、開口部より放出し た際に機械室下方に制御基板がないので安全性を向上させることができる。さらに、 機械室ファン 29を配設している場合、圧縮機 8の冷却用の空気で制御基板 38を冷 却することができ、制御基板の過熱防止を行うことが可能となる。  In FIG. 10, a control board 38 for controlling the operation of the refrigerator is provided, and the control board 38 is provided on the first top surface 15. As a result, it is not necessary to provide a dedicated space for disposing the control board on the back of the refrigerator or the like, so that the inside volume of the refrigerator or the air path can be expanded. Even if the refrigerant leaks, the safety can be improved because there is no control board below the machine room when the refrigerant is discharged from the opening. Further, when the machine room fan 29 is provided, the control board 38 can be cooled by the air for cooling the compressor 8, and the control board can be prevented from overheating.
[0076] また、制御基板 38のシール面よりも下方に冷媒配管の溶接部(図示せず)を設け、 さらに下方に開口部 27を設けることで溶接部より仮に冷媒が漏洩したとしても下方の 機械室カバー 18の開口部 27より外部へと流出するので安全性を向上させることが可 能となる。  Further, by providing a welded portion (not shown) of the refrigerant pipe below the sealing surface of the control board 38 and providing the opening 27 further below, even if the refrigerant leaks from the welded portion, the lower Since it flows out of the opening 27 of the machine room cover 18 to the outside, it is possible to improve safety.
[0077] (実施の形態 9)  (Embodiment 9)
図 11は本発明の実施の形態 9における冷蔵庫の上部概略断面図であり、図 12は 同実施の形態における冷蔵庫の上部概略背面図であり、図 13は同実施の形態 9に おける冷蔵庫の概略天面図である。なお、実施の形態 1と同一構成については同一 符号を示す。  FIG. 11 is a schematic cross-sectional view of the upper part of the refrigerator in the ninth embodiment of the present invention, FIG. 12 is a schematic rear view of the upper part of the refrigerator in the ninth embodiment, and FIG. 13 is a schematic diagram of the refrigerator in the ninth embodiment. It is a top view. The same components as those in the first embodiment are denoted by the same reference numerals.
[0078] 図 11から図 13において、冷蔵庫本体 100は、 ABS榭脂(アクリロニトリルとブタジェ ンとスチレンの共重合体)などの榭脂を真空成型した内箱 101と、プリコート鋼板など の金属材料を用いた外箱 102とで構成された空間に発泡充填する断熱体 103を注 入してなる断熱壁を備えている。断熱体 103は、例えば硬質ウレタンフォームやフエ ノールフォームやスチレンフォームなどが用いられる。発泡材としてはハイド口カーボ ン系のシクロペンタンを用 、ると温暖化防止の観点でさらにょい。 [0079] 冷蔵庫本体 100は、複数の断熱区画に区分されており、上部を回転扉式、下部を 引出し式(図示せず)とする構成をしている。最上部に冷蔵室 104を設け、その下方 に引出し式の製氷室や切替室や野菜室や冷凍室(図示せず)が配置されている。各 断熱区画にはそれぞれ断熱扉がガスケット 105を介して設けられている。最上部には 冷蔵室回転扉 106が、冷蔵庫本体 100の外郭天面に設けたヒンジ 107で回動自在 に設けられ、その下方には各引出し扉が配置されている。 [0078] In Figs. 11 to 13, the refrigerator main body 100 includes an inner box 101 in which a resin such as an ABS resin (a copolymer of acrylonitrile, butadiene and styrene) is vacuum-molded, and a metal material such as a pre-coated steel sheet. There is provided a heat insulating wall formed by pouring a heat insulator 103 for foaming and filling the space defined by the outer box 102 used. As the heat insulator 103, for example, a hard urethane foam, a phenol foam, a styrene foam, or the like is used. The use of carbon cy- cle-based cyclopentane as a foaming material is even better from the perspective of preventing global warming. [0079] Refrigerator body 100 is divided into a plurality of heat-insulating compartments, and has a configuration in which the upper part is a revolving door type and the lower part is a drawer type (not shown). A refrigerating compartment 104 is provided at the top, and a drawer type ice making compartment, a switching compartment, a vegetable compartment, and a freezing compartment (not shown) are arranged below the refrigerating compartment 104. Each heat insulation section is provided with a heat insulation door via a gasket 105. The refrigerator compartment rotating door 106 is rotatably provided at the top with a hinge 107 provided on the outer top surface of the refrigerator main body 100, and each drawer door is arranged below the refrigerator 107 rotating door 106.
[0080] 冷蔵室回転扉 106には扉ポケット 108が収納スペースとして設けられている。冷蔵 室の庫内には複数の収納棚 109が設けられている。また、冷蔵庫本体 100の天面は 、第一の天面部 110と天面後方を凹ませた第二の天面部 111からなる。第二の天面 部 111の上方空間は機械室 112が構成されて 、る。  [0080] The refrigerator compartment rotating door 106 is provided with a door pocket 108 as a storage space. A plurality of storage shelves 109 are provided in the refrigerator compartment. Further, the top surface of refrigerator main body 100 includes a first top surface portion 110 and a second top surface portion 111 having a concave rear portion. A machine room 112 is formed above the second top surface portion 111.
[0081] 冷凍サイクルは、機械室 112に弾性部材 113で弾性支持された圧縮機 114と、圧 縮機 114の近傍に設けたボックスタイプの機械室ファン 115と、凝縮器(図示せず)と 、減圧器であるキヤビラリ(図示せず)と、水分除去を行うドライヤ(図示せず)と、冷却 ファンを近傍に配置して庫内に設けた蒸発器 (図示せず)と、吸入配管 116とを環状 に接続し、内部に可燃性冷媒であるイソブタンと冷凍機油である鉱油を封入して構成 されている。  [0081] The refrigeration cycle includes a compressor 114 elastically supported by an elastic member 113 in a machine room 112, a box-type machine room fan 115 provided near the compressor 114, and a condenser (not shown). A vacuum (not shown) as a decompressor, a dryer (not shown) for removing moisture, an evaporator (not shown) provided in a refrigerator with a cooling fan arranged in the vicinity, and a suction pipe 116. Are connected in a ring, and are filled with isobutane, which is a flammable refrigerant, and mineral oil, which is a refrigerating machine oil.
[0082] 機械室 112には庫内へ出っ張りを最小限とするために、圧縮機 114の長径を左右 方向に配置し、接続配管を左右方向に配置している。さらにカバーで覆われた電気 ターミナルを左右方向に配置することで機械室 112の前後方向を最短ィ匕してある。  [0082] In the machine room 112, the long diameter of the compressor 114 is arranged in the left-right direction and the connection pipe is arranged in the left-right direction in order to minimize the protrusion into the refrigerator. Further, by arranging the electric terminals covered with the cover in the left-right direction, the front-rear direction of the machine room 112 is minimized.
[0083] また、圧縮機 114の中央は、機械室 112の中央力も左右方向にずらしてして配置さ れており、ずらした方向と反対側の広く設けた空間部に機械室ファン 115を配置して いる。第二の天面部 111は、圧縮機 114の積載部を底に、左右を盛り上げた形状で あり、庫内側に窪みを持たせて、庫内に段差のでない省スペースな冷気風路 119を 形成している。また、機械室ファン 115は、第二の天面部 111の盛り上がった段差部 120上に設けてあり、機械室 112の上方に電気部品を配置し、機械室ファン 115の 電気接点である電装部下方に空間を設けてある。  [0083] Further, the center of the compressor 114 is arranged so that the central force of the machine room 112 is shifted in the left-right direction, and the machine room fan 115 is arranged in a widely provided space opposite to the shifted direction. are doing. The second top surface 111 has a shape in which the left and right sides are raised at the bottom of the loading part of the compressor 114, and has a recess inside the refrigerator to form a space-saving cold air passage 119 with no steps inside the refrigerator. are doing. The machine room fan 115 is provided on the raised step portion 120 of the second top surface portion 111, and electric components are arranged above the machine room 112, and below the electric component, which is an electrical contact of the machine room fan 115. Is provided with a space.
[0084] また、圧縮機 114をずらした方向の側壁には、冷凍サイクルの流路制御に用いられ る電動バルブ 121が、防振支持して側壁上方に設けられている。また、電動バルブ 1 21は、バルブ本体 122の上方にモータやソレノイドなどの電動要素 123を配置した 構成であり、機械室 112の上方に電動バルブ 121の電気接点を有する電気部品を 配置し、電気部品下方に空間を設けた構成として ヽる。 An electric valve 121 used for controlling the flow path of the refrigeration cycle is provided above the side wall of the side wall in the direction in which the compressor 114 is displaced so as to support the vibration isolation. Also electric valve 1 Reference numeral 21 denotes a configuration in which an electric element 123 such as a motor or a solenoid is disposed above a valve body 122.An electric component having an electric contact of the electric valve 121 is disposed above a machine room 112, and a space is provided below the electric component. As a configuration provided.
[0085] 機械室ファン 115や電動ノ レブ 121を機械室上方に配置したため、サービス性を 向上させるために、機械室カバー 124が、機械室 112の上方と背面を開放可能にビ ス止めなどで設けられて 、る。このように機械室 112の上壁及び背壁は機械室カバ 一 124によって形成されている。この機械室カバー 124は、天面カバー 124aと背面 カバー 124bの 2部品構成であってもよいし、 1部品であってもよい。  [0085] Since the machine room fan 115 and the electric knob 121 are arranged above the machine room, in order to improve the serviceability, the machine room cover 124 is opened with screws so that the upper and rear sides of the machine room 112 can be opened. It is provided. Thus, the upper and back walls of the machine room 112 are formed by the machine room cover 124. The machine room cover 124 may be composed of two parts, a top cover 124a and a back cover 124b, or may be one part.
[0086] さらに、機械室カバー 124に設けた開口部 125、又は第二の天面 111との間の機 械室カバー 124の切り欠き部など空気連通部力 少なくとも一箇所は機械室 112の 下方側に設けているので、冷媒漏洩時に空気との比重差力 下方に滞留する冷媒 ガスを速やかに大気拡散させて、可燃濃度となることを防止する。  [0086] Further, at least one portion of the air communication portion force such as an opening 125 provided in the machine room cover 124 or a cutout portion of the machine room cover 124 between the machine room cover 124 and the second top surface 111 is provided below the machine room 112. Since it is provided on the side, when the refrigerant leaks, the refrigerant gas stagnant below the specific gravity difference force with the air is quickly diffused into the atmosphere to prevent the flammable concentration from being reached.
[0087] また、機械室 112の下方とは、比較的冷媒ガス漏洩の頻度が高い配管溶接接合部 より少なくとも下方であることを指す。この配管溶接接合部は、凝縮器に接続される配 管を連結するための圧縮機 114における部分である。  [0087] Further, "below machine room 112" means that it is at least below a pipe welded joint where the frequency of refrigerant gas leakage is relatively high. This pipe welding joint is a part of the compressor 114 for connecting the pipe connected to the condenser.
[0088] 力!]えて、電気部品である機械室ファン 115の電装部より下方に開口部 125を設けた ので、より安全性を向上可能である。さらに、電動バルブ 121の電装部より下方に開 口部 125を設けたので、より安全性を向上可能である。またさらに、圧縮機 114の電 気ターミナルより下方に開口部 125を設けたので、より安全性を向上可能である。こ のように、開口部 125が、機械室 112の内部に収納された様々な機器の電気接点よ り下方に位置する箇所に設けられている。  [0088] Power! In addition, since the opening 125 is provided below the electrical component of the machine room fan 115, which is an electrical component, safety can be further improved. Further, since the opening 125 is provided below the electric component of the electric valve 121, safety can be further improved. Further, since the opening 125 is provided below the electric terminal of the compressor 114, safety can be further improved. As described above, the opening 125 is provided at a position below the electrical contacts of various devices housed in the machine room 112.
[0089] 開口部 125は、本実施の形態では機械室カバー 124の背面側の下部に少なくとも 設けている。し力しながら、もし、機械室 112の側壁に冷蔵庫本体 100の断熱壁等で 形成された区画がなぐ例えば、機械室カバー 124を側壁にまで回り込むように延長 したもので機械室 112を区画した場合は、開口部 125の位置は、必ずしも機械室の 背壁に限定する必要はなく、機械室カバー 124の側壁にまで回り込ませた側面部に 設けても差し支えない。  In the present embodiment, the opening 125 is provided at least in the lower part on the back side of the machine room cover 124. If the compartment formed by the insulation wall of the refrigerator body 100 and the like is formed on the side wall of the machine room 112, for example, the machine room 112 is partitioned by extending the machine room cover 124 so as to extend to the side wall. In this case, the position of the opening 125 does not necessarily need to be limited to the back wall of the machine room, and may be provided on the side surface that extends around the side wall of the machine room cover 124.
[0090] なお、従来において、圧縮機 114が冷蔵庫本体 100の下方に配置されている場合 は、断熱壁が上方にあるために、下方は比較的密閉性が低ぐ冷媒漏洩に対しても、 空気より重い冷媒は、切り欠き部やビス穴や冶具合わせ穴など力 拡散しやすかつ た。天面の窪みに機械室を構成すると、下方が断熱壁であるために、密閉性が高ぐ 冷媒漏洩時に冷媒が機械室底部にたまりやすい問題があった。本発明は、可燃性 冷媒を用いた冷凍サイクルで圧縮機 114を上方に配置した場合の防爆安全性に対 して非常に効果的である。 [0090] Conventionally, when the compressor 114 is disposed below the refrigerator body 100, Because the heat insulation wall is on the upper side, the refrigerant is heavier than the air easily diffuses into the notch, screw holes, jig mating holes, etc. . When the machine room is configured in the depression on the top surface, the lower part is a heat insulating wall, so the airtightness is high. There was a problem that the refrigerant easily accumulated at the bottom of the machine room when the refrigerant leaked. The present invention is very effective for explosion-proof safety when the compressor 114 is arranged above in a refrigeration cycle using a flammable refrigerant.
[0091] また、より効果的に開口部 125から大気拡散させるためには、別の開口部を機械室 112の上部に設け吸入開口部 126とするとよい。例えば、少なくとも一つ吸入開口部 126を第一の天面部 110より上方に、少なくとも一つの開口部 125を第一の天面部 1 10より下方に設けると上下方向の空気の流れが促進される。  Further, in order to more effectively diffuse the air from the opening 125 to the atmosphere, another opening may be provided in the upper part of the machine chamber 112 to be the suction opening 126. For example, when at least one suction opening 126 is provided above the first top surface 110 and at least one opening 125 is provided below the first top surface 110, the flow of air in the vertical direction is promoted.
[0092] なお、本実施の形態では、吸入開口部 126は、機械室ファン 115の動作時に外気 を吸入するための吸入口と兼用されて 、るので、機械室ファン 115の空気吸 、込み 側に設けている。具体的には機械室カバー 124の天面部、すなわち天面カバー 124 aが、第一の天面部 110よりも 10ミリメートルから 50ミリメートルほど高い位置に箱型で 形成されており、第一の天面部 110と天面カバー 124aの間に複数のスリットで吸入 開口部 126が設けられている。このように、機械室ファン 115の吸い込み側の正面と 側面と背面の少なくともいずれか一つにはスリットが設けられ吸入開口部 126を構成 している。天井に向かって開口していないので、物を載せられて開口部が閉塞するこ と力 Sなく、埃が積み重なって堆積していかないので、埃つまりがしにくいという効果が 得られる。  [0092] In the present embodiment, the suction opening 126 is also used as a suction port for sucking outside air when the machine room fan 115 operates, so that the air suction and suction side of the machine room fan 115 is provided. Is provided. Specifically, the top of the machine room cover 124, that is, the top cover 124a is formed in a box shape at a position about 10 to 50 mm higher than the first top 110, and the first top A suction opening 126 is provided between the top 110 and the top cover 124a with a plurality of slits. As described above, the slit is provided in at least one of the front side, the side surface, and the rear surface of the suction side of the machine room fan 115 to form the suction opening 126. Since there is no opening toward the ceiling, there is no force S to put the object on and the opening is closed, and since the dust does not accumulate and accumulate, it is possible to obtain an effect that the dust is not easily removed.
[0093] なお、本実施の形態では、吸入開口部 126は、機械室ファン 115の動作時に外気 を吸入するための吸入口として、機械室 112の前面側上部に開口しているものとした 。しかし、外気を吸入するための吸入口は、機械室ファン 115によって強制対流が行 われる風路の上流側に位置していればよぐ例えば、機械室ファン 115をはさんで左 右側に、吸入口である吸入開口部と、排気口である開口部 125を形成してもよい。こ のとき、機械室 112を最小限の容積とするために、圧縮機 114の天面は第一の天面 110より高 ヽ位置に設定されて!ヽる。  [0093] In the present embodiment, suction opening 126 opens at the upper front side of machine room 112 as a suction opening for sucking outside air when machine room fan 115 operates. However, the suction port for sucking outside air only needs to be located on the upstream side of the air passage where forced convection is performed by the machine room fan 115. An inlet opening serving as a mouth and an opening 125 serving as an exhaust port may be formed. At this time, the top surface of the compressor 114 is set at a position higher than the first top surface 110 in order to minimize the volume of the machine room 112.
[0094] また、機械室 112の前面断熱壁 127は、圧縮機 114を配置するための長さ必要な 長さとし、その左右を短く傾斜させてある。これによる庫内空間は、庫内冷気風路 11 9に利用され、無効容積の削減が図られている。したがって、機械室 112は中央部を 上下前後とも圧縮機 114を配置するために必要限度の長さを持ち、左右を上下前後 に短く構成し、空間体積を中央部が最も大きくなる構成としてある。さらに中央部に向 つて左右から下り傾斜を設けてあるので、万が一漏洩した可燃性冷媒は、空気より比 重が大きいので、中央に集められるように滞留する。この時、中央部下方に設けた開 口部 125から排気されるので、可燃性冷媒が可燃濃度となることがなぐより安全性 が高められる。 [0094] Further, the front heat insulating wall 127 of the machine room 112 has a length necessary for disposing the compressor 114. It has a length, and its left and right sides are slightly inclined. The space inside the refrigerator is used for the cool air passage 119 in the refrigerator to reduce the ineffective volume. Therefore, the machine room 112 has a length necessary for arranging the compressor 114 at the center, up, down, front and rear, and is configured short at the left, right, up, down, front and back, and the space at the center is the largest. In addition, since the flammable refrigerant leaks from the left and right toward the center, it has a higher specific gravity than air, and stays so that it can be collected in the center. At this time, since the air is exhausted from the opening 125 provided below the central portion, the safety is improved more than the flammable refrigerant does not have the flammable concentration.
[0095] なお、制御基板 130は、機械室 112の下方の背面断熱体 135に設けられ、窪みで 構成された基板収納部 131に収納され、基板カバー 132で密閉シールされて 、る。 基板収納部 131と機械室 112の間には、庫内側から断熱体 103に窪みが設けられ、 その窪みに庫内ランプ 133が収納されている。こうして、機械室 112下方のでっぱり 段差を大きくしないで済む。また、圧縮機 114は前後方向が最小となる配置としてあ るので、機械室 112の庫内側でっぱりによる無効容積を増やさずに小さくすることが できる。  The control board 130 is provided on the rear heat insulator 135 below the machine room 112, is housed in a board housing 131 formed of a depression, and is hermetically sealed with a board cover 132. Between the substrate storage section 131 and the machine room 112, a dent is provided in the heat insulator 103 from the inside of the storage, and a lamp 133 is stored in the dent. In this way, it is not necessary to increase the step below the machine room 112. Further, since the compressor 114 is arranged so as to be minimum in the front-rear direction, the compressor 114 can be reduced without increasing the ineffective volume due to the tension inside the machine room 112.
[0096] なお、制御基板 130を第一の天面 110の上部に配置するようにしてもよい。それに より、機械室 112からの漏洩冷媒拡散経路となる開口部 125より上部に電装品を設 けるのでより安全性が向上する。  [0096] Control board 130 may be arranged above first top surface 110. As a result, since the electrical components are provided above the opening 125 which is a diffusion path of the leaked refrigerant from the machine room 112, the safety is further improved.
産業上の利用可能性  Industrial applicability
[0097] 本発明に係る冷蔵庫は、機械室内に漏洩した場合の冷媒を滞留させることなく速 やかに大気中に放出拡散できるため、可燃性冷媒を使用した場合の安全性を向上 することができ、家庭用冷蔵庫のみならず業務用冷蔵庫、その他の冷却機器を備え た貯蔵庫の機械室構成として有用である。 [0097] The refrigerator according to the present invention can quickly release and diffuse refrigerant into the atmosphere without stagnation when leaked into the machine room, and therefore can improve safety when a flammable refrigerant is used. It is useful as a machine room configuration for storages equipped with not only household refrigerators but also commercial refrigerators and other cooling devices.

Claims

請求の範囲 The scope of the claims
[1] 冷蔵庫本体と、  [1] The refrigerator body,
前記冷蔵庫本体に備えられ、圧縮機と凝縮器と減圧器と蒸発器とを備えて一連の冷 媒流路を構成する冷凍サイクルと、  A refrigeration cycle provided in the refrigerator body, comprising a compressor, a condenser, a decompressor, and an evaporator, and constituting a series of refrigerant channels;
前記冷蔵庫本体の上部に設けられた機械室とを含み、  A machine room provided at the top of the refrigerator body,
前記冷凍サイクルには、空気よりも比重の重い可燃性冷媒が封入され、  The refrigeration cycle is filled with a flammable refrigerant having a specific gravity heavier than air,
前記冷蔵庫本体は、第一の天面部と、その第一の天面部より低い位置に設けた第二 の天面部とを備え、  The refrigerator body includes a first top surface portion and a second top surface portion provided at a position lower than the first top surface portion,
前記機械室は、前記第二の天面部を底面とし、その機械室を囲む側壁及び背壁を 備え、前記側壁又は前記背壁の少なくとも一方に前記機械室の内部と外部とを連通 する開口部を設けるとともに、その機械室の内部に前記圧縮機を配設した冷蔵庫。  The machine room has the second top surface as a bottom surface, includes a side wall and a back wall surrounding the machine room, and an opening communicating at least one of the side wall or the back wall with the inside and outside of the machine room. And a refrigerator in which the compressor is disposed inside the machine room.
[2] 前記開口部が、前記機械室の内部に収納された機器の電気接点より下方に位置す る箇所に設けられた請求項 1記載の冷蔵庫。  2. The refrigerator according to claim 1, wherein the opening is provided at a position below an electrical contact of a device housed in the machine room.
[3] 前記圧縮機は、前記凝縮器に接続される配管を連結するための配管溶接接合部を 有し、前記開口部は、前記配管溶接接合部より下方に位置する箇所に設けられた請 求項 1記載の冷蔵庫。 [3] The compressor has a pipe welding joint for connecting a pipe connected to the condenser, and the opening is provided at a location provided below the pipe welding joint. The refrigerator according to claim 1.
[4] 前記電気接点は、前記圧縮機に備えられた電気接点である請求項 2記載の冷蔵庫  4. The refrigerator according to claim 2, wherein the electrical contact is an electrical contact provided on the compressor.
[5] 前記機械室の内部には、さらに前記圧縮機を冷却するための機械室ファンを備え、 前記電気接点は、前記機械室ファンに備えられた電気接点である請求項 2記載の冷 蔵 。 5. The refrigerator according to claim 2, further comprising a machine room fan for cooling the compressor inside the machine room, wherein the electric contact is an electric contact provided to the machine room fan. .
[6] 前記機械室の内部には、さらに前記冷凍サイクルの冷媒流路を制御するための電動 バルブを備え、前記電気接点は、前記電動バルブに備えられた電気接点である請 求項 2記載の冷蔵庫。  6. The request according to claim 2, further comprising an electric valve for controlling a refrigerant flow path of the refrigeration cycle inside the machine room, wherein the electric contact is an electric contact provided to the electric valve. Refrigerator.
[7] 冷蔵庫本体と、 [7] refrigerator body,
前記冷蔵庫本体に備えられ、圧縮機と凝縮器と減圧器と蒸発器とを備えて一連の冷 媒流路を構成する冷凍サイクルと、  A refrigeration cycle provided in the refrigerator body, comprising a compressor, a condenser, a decompressor, and an evaporator, and constituting a series of refrigerant channels;
前記冷蔵庫本体の上部に設けられた機械室とを含み、 前記冷凍サイクルには、空気よりも比重の重い可燃性冷媒が封入され、 前記機械室は、前記冷蔵庫本体の第一の天面部と、その第一の天面部より低い位 置に段差状に設けられた第二の天面部とを底面とし、その機械室を囲む側壁及び背 壁を備えるとともに、その機械室の内部と外部とを連通する開口部を、前記側壁又は 前記背壁の少なくとも一方における、前記第一の天面部より下方に位置する箇所に 設け、 A machine room provided at the top of the refrigerator body, A flammable refrigerant having a specific gravity higher than that of air is sealed in the refrigeration cycle, and the machine room is provided in a stepped manner at a first top surface of the refrigerator body and at a position lower than the first top surface. And a side wall and a back wall surrounding the machine room, and an opening communicating between the inside and the outside of the machine room is formed in at least one of the side wall and the back wall. , Provided at a location below the first top surface portion,
前記第一の天面部に前記凝縮器を、前記第二の天面部に前記圧縮機を配設した冷 蔵 。  A refrigerator having the condenser on the first top surface and the compressor on the second top surface.
[8] 前記機械室を覆う上壁と前記側壁に渡る部分、又は、前記機械室を覆う上壁と前記 背壁に渡る部分の少なくとも一方に斜部を設け、その斜部に前記開口部を設けた請 求項 1又は請求項 7記載の冷蔵庫。  [8] A slope is provided in at least one of a portion extending between the upper wall covering the machine room and the side wall, or a portion extending between the upper wall covering the machine room and the back wall, and the opening is formed in the slope. The refrigerator according to claim 1 or claim 7 provided.
[9] 前記機械室の背壁は、前記冷蔵庫本体の背面よりも前記冷蔵庫本体の前面側に配 設され、前記機械室の前記背壁に前記開口部を設けた請求項 1又は請求項 7記載 の冷蔵庫。 9. The back wall of the machine room is disposed closer to the front side of the refrigerator body than the back surface of the refrigerator body, and the opening is provided in the back wall of the machine room. The refrigerator as described.
[10] 前記機械室の前記背壁を、前記冷蔵庫本体の背面に対して傾斜させた請求項 1又 は請求項 7記載の冷蔵庫。  10. The refrigerator according to claim 1, wherein the back wall of the machine room is inclined with respect to a back surface of the refrigerator main body.
[11] 前記機械室の前記側壁と前記背壁とが交わる角は面取り形状であり、前記角に開口 部を設けた請求項 1又は請求項 7記載の冷蔵庫。 11. The refrigerator according to claim 1, wherein a corner at which the side wall and the back wall of the machine room intersect has a chamfered shape, and an opening is provided at the corner.
[12] 前記第一の天面部の後方部を、前記第二の天面部側に傾斜させた請求項 1又は請 求項 7記載の冷蔵庫。 12. The refrigerator according to claim 1, wherein a rear portion of the first top surface is inclined toward the second top surface.
[13] 前記機械室を覆う機械室カバーを備え、前記機械室カバーに前記開口部を設けた 請求項 1又は請求項 7記載の冷蔵庫。  13. The refrigerator according to claim 1, further comprising a machine room cover that covers the machine room, wherein the opening is provided in the machine room cover.
[14] 前記機械室カバーの背面部を脱着可能な別部品とし、前記機械室カバーを 2部品 構成とした請求項 13記載の冷蔵庫。 14. The refrigerator according to claim 13, wherein a rear part of the machine room cover is formed as a detachable separate part, and the machine room cover is formed of two parts.
[15] 前記機械室の内部には、さらに前記圧縮機を冷却するための機械室ファンを備え、 前記機械室ファンによって前記機械室内の空気を前記開口部へと強制排気する風 路を形成した請求項 1又は請求項 7記載の冷蔵庫。 [15] A machine room fan for cooling the compressor is further provided inside the machine room, and an air passage for forcibly exhausting air in the machine room to the opening by the machine room fan is formed. A refrigerator according to claim 1 or claim 7.
[16] さらに、前記冷蔵庫の動作を制御するための制御基板を備え、前記制御基板を前記 第一の天面部に配設した請求項 1又は請求項 7記載の冷蔵庫。 [16] The apparatus further includes a control board for controlling operation of the refrigerator, wherein the control board is 8. The refrigerator according to claim 1, wherein the refrigerator is disposed on the first top surface.
さら〖こ、前記冷蔵庫の動作を制御するための制御基板を備え、前記制御基板を前記 機械室の下方の前記冷蔵庫本体に設けられた窪みに収納した請求項 1又は請求項 7記載の冷蔵庫。 8. The refrigerator according to claim 1, further comprising a control board for controlling an operation of the refrigerator, wherein the control board is housed in a recess provided in the refrigerator main body below the machine room.
PCT/JP2005/003945 2004-03-17 2005-03-08 Refrigerator WO2005088214A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200580008538.6A CN1934400B (en) 2004-03-17 2005-03-08 Refrigerator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004-076241 2004-03-17
JP2004076241 2004-03-17
JP2004362643A JP3741140B2 (en) 2004-03-17 2004-12-15 refrigerator
JP2004-362643 2004-12-15

Publications (1)

Publication Number Publication Date
WO2005088214A1 true WO2005088214A1 (en) 2005-09-22

Family

ID=34975687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/003945 WO2005088214A1 (en) 2004-03-17 2005-03-08 Refrigerator

Country Status (3)

Country Link
JP (1) JP3741140B2 (en)
TW (1) TW200537064A (en)
WO (1) WO2005088214A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112781297A (en) * 2019-11-11 2021-05-11 日立环球生活方案株式会社 Refrigerator with a door

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5011905B2 (en) * 2006-02-01 2012-08-29 パナソニック株式会社 refrigerator
KR101578002B1 (en) * 2008-12-10 2015-12-16 엘지전자 주식회사 A refrigerator
JP5899406B2 (en) * 2011-07-22 2016-04-06 パナソニックIpマネジメント株式会社 refrigerator
JP5838660B2 (en) * 2011-08-29 2016-01-06 株式会社ノーリツ Heat pump water heater
JP5944709B2 (en) * 2012-03-22 2016-07-05 株式会社東芝 refrigerator
JP2014074526A (en) * 2012-10-03 2014-04-24 Hoshizaki Electric Co Ltd Device including refrigeration mechanism
JP6163321B2 (en) * 2013-02-27 2017-07-12 ホシザキ株式会社 Cooling system
CN117537539A (en) * 2022-08-01 2024-02-09 沈阳海尔电冰箱有限公司 Refrigerator with a refrigerator body

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623387U (en) * 1979-07-31 1981-03-02
JPH0545039A (en) * 1991-08-12 1993-02-23 Nippondenso Co Ltd Refrigerator for transportation
JPH063032A (en) * 1992-06-19 1994-01-11 Matsushita Refrig Co Ltd Refrigerator
JP2001082847A (en) * 1999-09-08 2001-03-30 Matsushita Refrig Co Ltd Cold insulation box
JP2001099552A (en) * 1999-09-29 2001-04-13 Sanyo Electric Co Ltd Cooler/refrigerator
JP2002318056A (en) * 2001-04-20 2002-10-31 Hitachi Ltd Refrigerator
JP2003178362A (en) * 2001-12-07 2003-06-27 Sanden Corp Automatic vending machine
JP2003314946A (en) * 2002-04-22 2003-11-06 Matsushita Refrig Co Ltd Refrigerator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623387U (en) * 1979-07-31 1981-03-02
JPH0545039A (en) * 1991-08-12 1993-02-23 Nippondenso Co Ltd Refrigerator for transportation
JPH063032A (en) * 1992-06-19 1994-01-11 Matsushita Refrig Co Ltd Refrigerator
JP2001082847A (en) * 1999-09-08 2001-03-30 Matsushita Refrig Co Ltd Cold insulation box
JP2001099552A (en) * 1999-09-29 2001-04-13 Sanyo Electric Co Ltd Cooler/refrigerator
JP2002318056A (en) * 2001-04-20 2002-10-31 Hitachi Ltd Refrigerator
JP2003178362A (en) * 2001-12-07 2003-06-27 Sanden Corp Automatic vending machine
JP2003314946A (en) * 2002-04-22 2003-11-06 Matsushita Refrig Co Ltd Refrigerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112781297A (en) * 2019-11-11 2021-05-11 日立环球生活方案株式会社 Refrigerator with a door

Also Published As

Publication number Publication date
TW200537064A (en) 2005-11-16
JP2005300132A (en) 2005-10-27
JP3741140B2 (en) 2006-02-01
TWI331670B (en) 2010-10-11

Similar Documents

Publication Publication Date Title
WO2005088214A1 (en) Refrigerator
JP5109565B2 (en) vending machine
WO2011114656A1 (en) Refrigerator
JP6735436B2 (en) refrigerator
EP2735826B1 (en) Refrigerator
JP6771969B2 (en) refrigerator
JP2017026174A (en) refrigerator
CN1934400B (en) Refrigerator
JP2002130910A (en) Refrigerator
JP2004293991A (en) Refrigerator
JP5003029B2 (en) refrigerator
JP4967510B2 (en) refrigerator
JP2007057131A (en) Refrigerator
US6865905B2 (en) Refrigerator methods and apparatus
JP4270030B2 (en) refrigerator
JP4552800B2 (en) refrigerator
JP2006138582A (en) Refrigerator
JP2002364970A (en) Refrigerator
JP5985942B2 (en) Refrigerator
JP2007057193A (en) Refrigerator
JP2007147100A (en) Refrigerator
JP4244862B2 (en) refrigerator
JP2004333093A (en) Freezing and refrigeration unit, and refrigerator using it
KR20110085395A (en) Refrigerator
JPH07286770A (en) Freezing refrigerator

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 200580008538.6

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase