WO2017010070A1 - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
WO2017010070A1
WO2017010070A1 PCT/JP2016/003247 JP2016003247W WO2017010070A1 WO 2017010070 A1 WO2017010070 A1 WO 2017010070A1 JP 2016003247 W JP2016003247 W JP 2016003247W WO 2017010070 A1 WO2017010070 A1 WO 2017010070A1
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WO
WIPO (PCT)
Prior art keywords
cold air
temperature storage
storage chamber
heat insulating
insulating material
Prior art date
Application number
PCT/JP2016/003247
Other languages
French (fr)
Japanese (ja)
Inventor
将裕 山田
芳嘉 紅林
悠介 松田
Original Assignee
パナソニックIpマネジメント株式会社
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 パナソニックIpマネジメント株式会社 filed Critical パナソニックIpマネジメント株式会社
Priority to CN201680040499.6A priority Critical patent/CN107850368A/en
Publication of WO2017010070A1 publication Critical patent/WO2017010070A1/en

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    • 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
    • F25D11/00Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • 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
    • F25D27/00Lighting arrangements

Definitions

  • the present invention relates to a refrigerator, and more particularly to a refrigerator in which a low-temperature storage chamber is provided in a refrigerator.
  • a household refrigerator is equipped with a refrigerator room, a vegetable room, a freezer room, and the like.
  • the chilled room includes a chilled room (a room having a temperature range of about 1 ° C. lower than that of the refrigerated room) and a partial room (a room having a slight freezing temperature range of about ⁇ 3 ° C.).
  • a low-temperature storage chamber such as a third temperature zone chamber that can be switched to these is known (for example, see Patent Document 1).
  • FIG. 15 is a schematic cross-sectional view of a low-temperature storage chamber portion of a conventional refrigerator
  • FIG. 16 is an enlarged cross-sectional view of a low-temperature storage chamber of a conventional refrigerator.
  • the refrigerator 100 is provided with a refrigerating room 101 and a low temperature storage room 102 provided at the lower part of the refrigerating room 101.
  • the upper surface of the low-temperature storage chamber 102 is covered with a shelf member 103 that is also used as a shelf located at the lowest level of the refrigerator compartment 101.
  • the shelf member 103 is configured by integrating a heat insulating material 104 and insulates the inside of the low temperature storage chamber 102 from the refrigerator compartment 101 having a relatively high temperature. Further, a cool air duct portion 105 is provided in the heat insulating material 104, and cool air sent from the main body 106 side by the cool air duct portion 105 is supplied into the low temperature storage chamber 102.
  • an inclined surface is provided on the front lower surface of the shelf board member 103, and an illuminating device 107 for irradiating the inside of the low temperature storage chamber 102 is provided on the inclined surface.
  • the low temperature storage chamber 102 can be cooled by blowing cool air from a large number of cool air outlets 108 provided in the cool air duct portion 105.
  • the refrigerating chamber 101 can be cooled to a temperature lower than the temperature in the refrigerating chamber 101, for example, as low as about 1 ° C. or ⁇ 3 ° C. as described above, and meat and fish etc. can be cooled and stored. It is suitable for doing and is useful.
  • the cold air outlet 108 provided in the cold air duct portion 105 is not formed evenly on the entire shelf plate member 103 where the cold air duct portion 105 becomes the ceiling of the low temperature storage chamber 102, and is partially formed in the rear portion. Therefore, the front portion of the low-temperature storage chamber 102 tends to be undercooled, and temperature unevenness tends to occur in the low-temperature storage chamber 102. Further, such temperature unevenness may cause local condensation.
  • the present invention has been made in view of the problems in the conventional refrigerator as described above, and provides a highly reliable refrigerator by suppressing temperature unevenness and condensation in the low-temperature storage chamber.
  • the refrigerator includes a main body, a refrigerating room provided inside the main body, and a low-temperature storage room provided at the lower part of the refrigerating room.
  • the low-temperature storage chamber has a shelf member that constitutes a ceiling, and the shelf member has a heat insulating material that insulates the low-temperature storage chamber from the refrigerator compartment.
  • the heat insulating material is provided with a cold air duct portion for taking in cold air from the cold air passage on the back of the refrigerator main body, and the heat insulating material is provided substantially from the rear end portion of the shelf board member to the front end.
  • the cold air duct portion is formed from the rear portion to the front end portion of the heat insulating material, and the cold air outlets are concentrated on the front end portion of the heat insulating material.
  • a cool air return port is provided at the rear of the low temperature storage chamber.
  • the cool air supplied to the front side of the low temperature storage chamber flows to the cool air return port behind the low temperature storage chamber. That is, since the cold air supplied to the front side of the low temperature storage chamber flows from the front to the rear of the low temperature storage chamber, the low temperature storage chamber can be uniformly cooled. Therefore, temperature unevenness in the low-temperature storage chamber and the occurrence of condensation due to this can be suppressed, and the food can be cooled and stored in a good state, thereby improving reliability.
  • a recess that protrudes toward the upper surface of the shelf member may be formed on the lower surface of the shelf member in the cool air duct portion in the heat insulating material.
  • the refrigerator by an example of embodiment of this invention may be provided with the illuminating device in the recessed part, and the cool air outlet may be provided in the front part rather than the illuminating device.
  • Such a configuration can efficiently illuminate the low temperature storage room, so that the visibility of the inside of the low temperature storage room can be improved. At the same time, even if a lighting device is provided, cold air can be supplied to the front side of the low-temperature storage chamber, and temperature unevenness and condensation in the low-temperature storage chamber can be reliably suppressed.
  • the heat insulating material may include a heat insulating wall zone in an outer peripheral portion of the recess provided with the lighting device.
  • the lighting device is a cold air duct portion through which the cold air flows, the cold air flowing in the cold air duct portion is insulated by the heat insulating wall zone around the recess provided with the lighting device. Accordingly, since the lighting device is not supercooled and condensation does not occur in the lighting device, it is possible to achieve uniform cooling in the low-temperature storage chamber and to prevent the lighting device from failing due to condensation.
  • a heater may be disposed on a bottom surface portion facing the rear end portion of the shelf member in the low temperature storage chamber.
  • Such a configuration makes it possible to suppress overcooling in the vicinity of the back portion of the low-temperature storage room, which is likely to be lowered in temperature due to cold radiation from low-temperature cold air from the cold air passage on the back of the main body. Therefore, temperature unevenness and dew condensation in the low temperature storage chamber can be more reliably suppressed, and the reliability can be further improved.
  • the main body includes a water supply tank chamber for ice making at the side of the low temperature storage chamber, and a heater is disposed at a portion adjacent to the water supply tank chamber at the bottom of the low temperature storage chamber. May be.
  • the low temperature storage chamber is provided to extend to the side of the water supply tank chamber, and it is possible to improve the reliability by suppressing the temperature unevenness and the occurrence of condensation inside the low temperature storage chamber in which the interior is expanded.
  • FIG. 1 is a front view of the refrigerator in the embodiment of the present invention.
  • FIG. 2 is a front view when the refrigerator door in the embodiment of the present invention is opened.
  • FIG. 3 is a longitudinal sectional view of the refrigerator in the embodiment of the present invention.
  • FIG. 4 is an enlarged perspective view of a low-temperature storage room provided in the lower part of the refrigerator compartment of the refrigerator in the embodiment of the present invention.
  • FIG. 5 is an enlarged cross-sectional view of the low-temperature storage room of the refrigerator in the embodiment of the present invention.
  • FIG. 6 is an exploded perspective view of the shelf member of the low-temperature storage chamber of the refrigerator in the embodiment of the present invention.
  • FIG. 7 is a perspective view of the shelf member of the low-temperature storage chamber of the refrigerator according to the embodiment of the present invention as viewed from above.
  • FIG. 8 is the perspective view which looked at the shelf board member of the low-temperature storage room of the refrigerator in embodiment of this invention from the downward direction.
  • FIG. 9 is a plan view showing a state in which the upper heat insulating material of the shelf member of the low temperature storage room of the refrigerator in the embodiment of the present invention is removed.
  • FIG. 10 is a plan view showing the bottom of the low-temperature storage room of the refrigerator in the embodiment of the present invention.
  • 11 is a cross-sectional view taken along the line 11-11 in FIG. FIG.
  • FIG. 12 is an explanatory diagram showing an illumination state when the low-temperature storage chamber container of the refrigerator in the embodiment of the present invention is pulled out.
  • 13 is a cross-sectional view taken along line 13-13 of FIG.
  • FIG. 14 is a diagram for explaining an illumination state in the low-temperature storage room of the refrigerator in the embodiment of the present invention.
  • FIG. 15 is a schematic sectional drawing which shows the low temperature store room part of the conventional refrigerator.
  • FIG. 16 is an enlarged cross-sectional view illustrating a configuration of a low-temperature storage chamber of a conventional refrigerator.
  • FIG. 1 is a front view of a refrigerator in the embodiment of the present invention
  • FIG. 2 is a front view when the door of the refrigerator in the embodiment of the present invention is opened
  • FIG. 3 is an embodiment of the present invention. It is a longitudinal cross-sectional view of the refrigerator in a form. In FIG. 3, the left side is the front of the refrigerator and the right side is the rear.
  • the refrigerator 50 includes a main body 1 having an opening at the front. As shown in FIG. 3, the main body 1 is filled between an outer box 2 mainly using a steel plate, an inner box 3 formed of a hard resin such as ABS, and the outer box 2 and the inner box 3. And a foam heat insulating material 4 such as hard foam urethane.
  • the main body 1 is divided into a plurality of storage rooms by partition plates 5, 6, 6a.
  • the main body 1 includes a refrigerating chamber 7 positioned at the top, a switching chamber 8a positioned at the bottom of the refrigerating chamber 7, and an ice making chamber 8b juxtaposed to the switching chamber 8a, a switching chamber 8a, and an ice making chamber 8b.
  • It has each freezer compartment 9 located in the lower part, and each storage room of the vegetable compartment 10 located in the lower part of the freezer compartment 9. Front openings of the storage chambers are closed by doors 11a, 11b, 11c, 11d, and 11e so that they can be opened and closed.
  • a machine room 14 is provided in the upper rear region of the main body 1.
  • the machine room 14 accommodates a compressor 15 and high-pressure side components of the refrigeration cycle such as a dryer for removing moisture.
  • a cooling chamber 16 for generating cold air and a cold air passage 17 for supplying and circulating the cold air from the cooling chamber 16 to the refrigerating chamber 7, the vegetable chamber 10 and the freezing chamber 9 are provided on the back surface of the main body 1.
  • a cooler 19 is disposed in the cooling chamber 16, and a cooling fan 20 is disposed above the cooler 19.
  • the cooling fan 20 forcibly circulates the cool air cooled by the cooler 19 through the cool air passage 17 to the refrigerating room 7, the vegetable room 10, and the freezing room 9 to cool each room.
  • the refrigerator compartment 7 is cooled to a temperature at which the ingredients are not frozen, that is, usually 1 ° C. to 5 ° C.
  • the vegetable compartment 10 is cooled to a temperature equal to or slightly higher than the refrigerator compartment 7, for example, 2 ° C. to 7 ° C.
  • the freezer compartment 9 is usually cooled to a freezing temperature range of ⁇ 22 ° C. to ⁇ 15 ° C. for frozen storage, and in some cases, for example, ⁇ 30 ° C. or ⁇ 25 ° C. to improve the frozen storage state. It may be cooled to a low temperature.
  • a plurality of shelf boards 21 on which food is placed are provided in the refrigerator compartment 7 cooled by the cold air from the cooling compartment 16. Further, an illuminating device is installed in the front portion of the side wall, and the illuminating device is turned on when the door 11a is opened, and is configured to irradiate the inside of the refrigerator compartment 7.
  • the refrigerating chamber 7 has a water supply tank chamber 22 in which a water supply tank for ice making is installed at the lower portion thereof, a chilled chamber that is cooled to a temperature zone of about 1 ° C. adjacent to the side, or about ⁇ 3
  • a low-temperature storage chamber 23 that can be switched to a partial chamber cooled to a slight freezing temperature zone of 0 ° C. is defined.
  • the cold storage room 23 is not switchable to a chilled room or a partial room, but may be designed to be used exclusively as a chilled room or a partial room.
  • FIG. 4 is an enlarged perspective view of a low-temperature storage room provided at the lower part of the refrigerator compartment of the refrigerator according to the embodiment of the present invention.
  • the lower right side is the front and the upper left side is the rear.
  • FIG. 5 is an enlarged cross-sectional view of the low-temperature storage room of the refrigerator according to the embodiment of the present invention.
  • the left side is the front and the right side is the rear.
  • the low-temperature storage chamber 23 of the refrigerator 50 of the present embodiment is a shelf plate member 24 that is also used as a shelf plate whose upper surface is located at the lowest stage of the refrigerator compartment 7.
  • a partition is formed, and a side surface is partitioned by a partition plate 22 a that partitions the water supply tank chamber 22.
  • a container 25 that can be pulled out is provided inside the low-temperature storage chamber 23.
  • the front side of the container 25 is closed by a cover plate 26 that rotates around the front end of the shelf plate member 24 and opens as the container 25 is pulled out.
  • FIG. 6 is an exploded perspective view of a shelf plate member constituting the low-temperature storage chamber of the refrigerator in the embodiment of the present invention, with the lower left side in FIG. 6 being the front of the refrigerator and the upper right side being the rear.
  • FIG. 7 is a perspective view of the shelf member of the refrigerator according to the embodiment of the present invention as viewed from above, with the lower left side in FIG. 7 being the front and the upper right side being the rear.
  • FIG. 8 is a perspective view of the shelf member of the refrigerator according to the embodiment of the present invention as viewed from below, with the upper right side in FIG. 8 being the front of the refrigerator and the lower left side being the rear.
  • the shelf member 24 includes an upper plate 28 made of a glass plate and the like mounted on a shelf frame member 27 made of synthetic resin, and a synthetic resin that becomes a lower plate. It is comprised from the lower frame board 29 made from, and the heat insulating materials 30, such as a polystyrene foam provided between the upper board 28 and the lower frame board 29. As shown in FIG.
  • the heat insulating material 30 is configured by polymerizing an upper heat insulating material 30a and a lower heat insulating material 30b.
  • the cold air duct part 32 is formed in the space formed by superposing the upper heat insulating material 30a and the lower heat insulating material 30b.
  • a cold air outlet 31 that opens to the lower frame plate 29 is formed.
  • the cold air outlet 31 is more specifically supplied to the low temperature storage chamber 23 so that more cold air is supplied to the front side of the low temperature storage chamber 23 than to the rear side. It is concentrated on the front end portion of the heat insulating material 30 where the cold air duct portion 32 is formed so that most of the cold air blown out is blown out from the front side of the low temperature storage chamber 23.
  • the cold air outlets 31 are provided more concentrated on the front side of the low temperature storage chamber 23, that is, on the front end portion of the heat insulating material 30 than the rear portion.
  • the total opening area of the cold air outlet 31 provided on the front side of the low temperature storage chamber 23 is greater than the total opening area of the outlet 31 provided on the rear side of the low temperature storage chamber 23. May be concentrated on the front side so as to be larger. That is, the cold air outlet 31 may be provided with the number of the cold air outlets 31 concentrated on the front side, or provided on the front side of the low temperature storage chamber 23 regardless of the number of the cold air outlets 31.
  • the sum of the opening area of the cold air outlet 31 may be provided so as to be larger than the sum of the cold air outlets 31 provided on the rear side.
  • the lower heat insulating material 30b is also provided with a cold air outlet 31b at a position corresponding to the cold air outlet 31 provided in the lower frame plate 29, and the cold air duct portion 32 is provided with the cold air outlet 32b. It communicates with the mouth 31.
  • the cold air duct portion 32 communicates with the cold air passage 17 on the back surface of the main body 1 through a cold air introducing port 33 described later, and the low temperature storage chamber is connected to the cold air introducing port 33.
  • Cold air is supplied into the interior 23.
  • the inside of the low temperature storage chamber 23 is cooled by this cold air.
  • the heat insulating material 30 provided with the cold air duct portion 32 is disposed from the rear end portion of the shelf board member 24 to substantially the front end.
  • the substantially front end means, for example, as shown in FIG. 8, a front end of the shelf board member 24 and a portion having a distance of several centimeters from the front end to the inward side of the shelf board member 24.
  • the rear end portion of the shelf board member 24 refers to an end portion on which the heat insulating material 30 on the rear side of the shelf board member 24 can be provided, and in this embodiment, refers to the end portion 24b (FIG. 6). reference).
  • the rear portion of the shelf board member 24 refers to the end 24b and the part from the end 24b to the center of the shelf board member 24 in the front-rear direction.
  • the cold air duct part 32 is formed from the back part of the heat insulating material 30 to the front-end part, and the cold air blower outlet is provided in the front end part of the heat insulating material 30 in which the cold air duct part 32 was provided. 31 is disposed.
  • the front end portion of the heat insulating material 30 refers to the front end side of the heat insulating material 30, that is, the front half in the front-rear direction of the heat insulating material 30, as shown in FIG. 30 is a front third portion in the front-rear direction, more preferably a front quarter portion of the heat insulating material 30 in the front-rear direction.
  • the rear portion of the heat insulating material 30 refers to a portion behind the center of the heat insulating material 30 in the front-rear direction.
  • the cold air duct portion 32 is disposed up to the front end portion of the heat insulating material 30, and most of the cold air supplied into the low temperature storage chamber 23 passes through the cold air duct portion 32 and is stored at a low temperature from the cold air outlet 31. It is supplied forward in the chamber 23.
  • FIG. 9 is a plan view of a state in which the upper heat insulating material of the shelf board member constituting the low temperature storage room of the refrigerator in the embodiment of the present invention is removed, with the lower side in FIG. 9 being the front of the refrigerator 50 and the upper side being the rear It is.
  • the cold air outlet 31 is formed on the front side of the lighting device 35 described later, and is behind the lighting device 35. That is, the rear side in the low temperature storage chamber 23 is formed as a non-porous portion in which the cold air outlet 31 is not formed.
  • it is comprised so that many cold air outlets 31 may be concentrated and arrange
  • a cold air return port 43 is provided at the rear portion of the low temperature storage chamber 23, which is opposite to the front end portion of the heat insulating material 30 in which the cold air outlet ports 31 are concentrated. ing.
  • FIG. 10 is a plan view showing the bottom of the low-temperature storage room of the refrigerator in the embodiment of the present invention, with the lower side in FIG. 10 being the front of the refrigerator 50 and the upper side being the rear.
  • a heater 44 is laid on the bottom surface portion facing the rear portion of the shelf plate member 24 of the low temperature storage chamber 23 where the cold air outlets 31 are not formed in a concentrated manner.
  • the heater 44 includes a front side portion 44a, a rear side portion 44b, and both side portions 44c.
  • the heater 44 is embedded in the partition plate 5 constituting the bottom surface of the low temperature storage chamber 23.
  • the heater 44 is disposed so as to surround the outer periphery of the non-hole portion on the rear side of the low-temperature storage chamber 23 where the cold air outlet 31 is not disposed. That is, the rear side portion 44 b and the both side portions 44 c except for the front side portion 44 a are arranged so as to be positioned at the corners of the low temperature storage chamber 23. Further, the heater 44 is formed so that the wiring is densely folded at the vicinity 44 d of the cold air return port 43 and the vicinity 44 e of the water supply tank chamber 22.
  • FIG. 11 is a cross-sectional view taken along the line 11-11 in FIG. 9.
  • the left side is the front of the refrigerator 50 and the right side is the rear.
  • the heat insulating material 30 of the shelf board member 24 is configured by superposing an upper heat insulating material 30a and a lower heat insulating material 30b.
  • the cold air duct portion 32 is formed by a recess formed in one or both of the upper heat insulating material 30a and the lower heat insulating material 30b.
  • the upper heat insulating material 30a and the lower heat insulating material 30b of the heat insulating material 30 are press-fitted and attached to the lower frame plate 29 of the shelf board member 24, and connected to the cool air passage 17 of the main body 1 at the rear part thereof as shown in FIG. A cold air inlet 33 is provided.
  • the lower surface of the shelf plate member 24, that is, the lower frame plate 29 protrudes toward the upper surface of the heat insulating material 30 so as to bite into the cold air duct portion 32 in the heat insulating material 30.
  • a recess 34 is formed.
  • the recess 34 is fitted into a through hole 30 c formed in the lower heat insulating material 30 b, and an illumination device 35 is provided inside the recess 34.
  • the recess 34 is formed in a portion closer to the front than the center in the front-rear direction (depth direction) of the shelf board member 24, and the lighting device 35 is located in a portion closer to the front of the low-temperature storage chamber 23.
  • FIG. 12 is a diagram for explaining a lighting state when the container of the cold storage room of the refrigerator in the embodiment of the present invention is pulled out.
  • the left side is the front of the refrigerator 50 and the right side is the rear.
  • the illumination device 35 provided in the recess 34 is positioned on the front side of the rearmost end 25 ⁇ / b> B of the upper surface opening of the container 25 drawn out from the low temperature storage chamber 23. It is configured.
  • the outer peripheral portion of the recess 34 of the heat insulating material 30 in which the lighting device 35 is accommodated is formed so as to become the cold air duct portion 32 leaving the heat insulating wall zone 36. That is, the cold air duct portion 32 is continuously formed also in a portion on the front side of the lighting device 35, and the cold air is supplied from the cold air outlet 31 to the front portion of the low-temperature storage chamber 23. .
  • the heat insulating wall zone 36 formed in the outer peripheral portion of the recess 34 is formed such that the heat insulating wall bandwidth 36W of the portion facing the cold air inlet 33 is wider than the other portions.
  • FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 9, and is a cross-sectional view of the main body of the refrigerator according to the embodiment of the present invention as viewed from the front.
  • the illuminating device 35 provided in the recess 34 includes a substrate 37, a light source body 38 made of LEDs and the like provided on the substrate 37, and a transparent cover 39 that covers the lower side of the light source body 38. It consists of and.
  • the substrate 37 is nail-locked by being fitted inside the holding piece 40 provided in the concave portion 34 of the lower frame plate 29 of the shelf plate member 24.
  • the transparent cover 39 is fitted on the outer side of the holding piece 40 and is fitted in the recess 34. That is, the illumination device 35 is unitized on the lower frame plate 29.
  • the upper heat insulating material 30 a and the lower heat insulating material 30 b constituting the heat insulating material 30 of the shelf board member 24 are provided with a wiring groove 41 formed by a concave portion similar to the cold air duct portion 32. .
  • the lead wire 42 of the illuminating device 35 is connected to the power supply lead wire on the main body 1 side through an opening 24 a formed in the rear end portion of the shelf board member 24 through the wiring groove 41.
  • the wiring groove 41 is directed forward from the rear one end portion (the left rear portion in FIG. 9) of the concave portion 34 so as to avoid the cold air outlet 31 of the cold air duct portion 32. It is formed, bent as it is in the lateral direction (right direction in FIG. 9), and further bent rearward along the side surface of the shelf board member 24.
  • the opening 24a of the shelf board member 24 is closed by the closing plate 44 (see FIG. 4) after the wiring process.
  • FIG. 14 is a diagram for explaining the illumination state in the low-temperature storage room of the refrigerator according to the embodiment of the present invention.
  • the left side is the front and the right side is the rear.
  • the low temperature storage chamber 23 detects whether the container 25 is put in and out by the container detection switch 45, detects the temperature by the temperature sensor 46, controls the supply of cold air, and sets the temperature to a predetermined temperature. It is configured to cool.
  • the cold air generated in the cooling chamber 16 is supplied to the refrigerator compartment 7, the vegetable compartment 10, and the freezer compartment 9 through the cold passage 17, It is supplied from the cold air outlet 31 to the low temperature storage chamber 23 via the cold air duct portion 32 provided in the shelf board member 24.
  • the cold air outlet 31 is formed concentrated on the front end portion of the heat insulating material 30 of the shelf board member 24, sufficient cold air can be supplied to the front portion of the low temperature storage chamber 23, and the low temperature storage chamber 23. It is possible to prevent the front portion of the battery from becoming short of cold air supply.
  • the inside of the low temperature storage chamber 23 is uniformly cooled over the entire region from the front portion to the rear portion.
  • a heater 44 is disposed on the bottom surface portion of the low temperature storage chamber 23 where the cold air outlets 31 are not formed in a concentrated manner and facing the rear portion of the shelf plate member 24.
  • the heater 44 is disposed along the corner of the rear bottom of the low temperature storage chamber 23 where the cold air that has been supercooled by the low temperature cold air from the cold air passage 17 on the back of the main body 1 tends to stay. Yes.
  • overcooling of the rear portion of the low-temperature storage chamber 23, particularly the rear corner is effectively suppressed, and the occurrence of temperature unevenness in the low-temperature storage chamber 23 can be suppressed efficiently.
  • the heater 44 is disposed along the boundary portion with the water supply tank chamber 22 at the bottom of the portion adjacent to the water supply tank chamber 22. Therefore, it is possible to prevent the water flow path in the water supply tank chamber 22 from icing due to the cold radiation in the cold storage chamber 23 and the cold radiation in the cold passage 17 on the back of the main body. Therefore, it is possible to improve the reliability by suppressing the temperature unevenness and the occurrence of dew condensation while expanding the low temperature storage chamber 23 to the portion of the water supply tank chamber 22.
  • the heater 44 is folded back in the vicinity of the water supply tank chamber 22 in the portion 44e and the portion near the cool air return port 44d, and the wiring is densely formed. With such a configuration, it is possible to reliably suppress the temperature drop of the water tank chamber 22 vicinity portion 44e and the cold air return port 43 vicinity portion 44d where the temperature tends to be low, and to suppress temperature unevenness and condensation in the low temperature storage chamber 23. Reliability can be improved.
  • the cold air duct portion 32 is provided so as to surround the lighting device 35 provided on the shelf plate member 24, and the cold air outlet 31 is provided in the front portion of the lighting device 35. ing. Therefore, it is possible to prevent cold air from being blown out from the front portion of the lighting device 35 and causing the front portion of the lighting device 35 to be in short supply of cold air.
  • the inside of the low temperature storage chamber 23 can be uniformly cooled.
  • the illumination device 35 of the low temperature storage chamber 23 is turned on together with the illumination device in the refrigerator compartment 7, and the inside of the low temperature storage chamber 23 is irradiated. Therefore, the visibility of the food stored in the low temperature storage chamber 23 can also be improved.
  • the lighting device 35 is provided on the lower surface of the shelf board member 24 in the front-rear direction (depth direction) (intermediate portion excluding the front end portion and the rear end portion).
  • the light from the light source body 38 can be irradiated up to the rear end of the container 25. Therefore, it is possible to brighten the inner part of the low-temperature storage chamber 23, and it is possible to clearly see the food stored in the low-temperature storage chamber 23.
  • the illuminating device 35 is provided so that it may be located ahead of the upper surface opening last end 25B of the container 25 pulled out from the low-temperature storage chamber 23, the container 25 is pulled out. Even in this case, the inside of the container 25 can be irradiated as shown in FIG. Therefore, the visibility of foodstuffs when the container 25 is pulled out can be improved.
  • the cold storage room 23 is in a state in which cold air flows through the cold air duct portion 32 around the lighting device 35 and the lighting device 35 is cooled.
  • the cold air flowing in the cold air duct portion 32 is insulated by the heat insulating wall zone 36 around the recess 34 provided with the lighting device 35, the lighting device 35 can be prevented from being overcooled. Therefore, condensation does not occur in the illuminating device 35, and concerns such as a short circuit failure due to the formation of condensation are eliminated and reliability can be improved.
  • the heat insulating wall zone 36 around the recess 34 in which the lighting device 35 is accommodated is a portion of the rear end portion of the shelf board member 24 facing the cold air inlet 33 as shown in FIG. Since the heat insulation wall bandwidth 36W is formed wider than the other portions of the heat insulation wall zone 36, the reliability can be further improved.
  • the heat insulating wall bandwidth 36W which is the portion of the recess 34 that faces the cold air inlet 33, is strongly cooled by the direct collision of the cold air from the cold air inlet 33, and condensation tends to occur.
  • the heat insulation wall bandwidth 36W in the portion facing the cold air inlet 33 is formed to be particularly wide, so that the strong cooling due to the direct collision of the cold air from the cold air inlet 33 is more reliably insulated. it can. Therefore, it is possible to reliably prevent overcooling of the portion facing the cold air inlet 33 of the lighting device 35 to prevent condensation from occurring in the lighting device 35, and to eliminate concerns such as a short circuit failure due to condensation. Can be increased.
  • the lighting device 35 is provided in a portion closer to the front than the center in the front-rear direction (depth direction) of the low-temperature storage chamber 23.
  • a predetermined size or more of the cold air duct portion 32 from the cold air inlet 33 to the lighting device 35 can be secured.
  • the lighting device 35 prevents the outside air from entering the light source body 38 part that is likely to occur when the door 11a of the refrigerator compartment 7 is opened and closed. It is possible to prevent condensation due to intrusion of outside air. Moreover, a creeping distance to the light source body 38 can be ensured by providing the transparent cover 39. Therefore, it is also possible to prevent the light source body 38 from being damaged due to static electricity flowing from the hand or the like to the light source body 38 and the substrate 37 when the food is taken in and out of the low temperature storage chamber 23. Therefore, reliability can be further improved.
  • the shelf plate member 24 is formed with the cold air duct portion 32 in a space formed by superposing the upper heat insulating material 30a and the lower heat insulating material 30b, so that the cold air duct portion 32 can be easily formed.
  • Can increase productivity That is, only the upper heat insulating material 30a and the lower heat insulating material 30b in which the cold air passage recess is formed (the cold air passage recess may be provided in only one of the upper heat insulating material 30a and the lower heat insulating material 30b).
  • productivity can be dramatically improved compared with the case where the inside of one heat insulation member is hollowed and a cold air duct part is formed.
  • the cold passage recesses need only be formed on the overlapping surfaces of the upper heat insulating material 30a and the lower heat insulating material 30b, any shape of the cold air passage recesses can be easily formed. Therefore, the degree of freedom of the cold air passage shape can be improved, and the cold air duct portion 32 that can efficiently cool the entire low temperature storage chamber 23 can be formed.
  • the wiring groove 41 in which the lead wire 42 of the lighting device 35 is disposed is also formed in the same recess method as the cold air duct portion 32, the degree of freedom of the shape of the wiring groove 41 is the same as in the case of the cold air duct portion 32. Can be improved. Therefore, the wiring groove 41 can be formed at a position where it is difficult to be affected by the cold air flowing through the cold air duct portion 32, so that the condensation of the wiring itself can be prevented and the reliability can be improved. In addition, there is no need to prepare a lead wire mounting member, etc., and mount the lead wire member on the shelf board member 24 to provide a lead wire wiring portion, thereby reducing the number of members and the number of assembly steps by rationalizing the configuration. Therefore, productivity can be improved and cost reduction can be promoted.
  • the lighting device 35 is unitized by mounting a substrate 37 and a transparent cover 39 in a recess 34 provided in the lower frame plate 29 of the shelf plate member 24. For this reason, the upper heat insulating material 30a and the lower heat insulating material 30b are assembled between the upper plate 28 and the lower frame plate 29 to assemble the shelf plate member 24, and at the same time, the incorporation of the lighting device 35 is completed. Therefore, productivity can be improved, the number of parts conveyed in the assembly process can be reduced, and handling of the light source 38 and the like is facilitated.
  • the shelf plate member The assembly of 24 can be facilitated, and the productivity can be further improved.
  • the lighting device 35 is unitized by sequentially fitting and mounting the substrate 37 and the transparent cover 39.
  • the unitized lower frame plate 29 is turned over, and the lower heat insulating material 30 b is fitted into the lower frame plate 29.
  • the lead wire 42 from the substrate 37 is pulled out from the hole portion 34Y of the recess 34 into which the substrate 37 is fitted, and is drawn around the wiring groove recess formed in the lower heat insulating material 30b.
  • the upper heat insulating material 30a is piled up on the lower heat insulating material 30b and the upper plate 28 integrated with the shelf frame member 27 is set, the assembly of the shelf plate member 24 is completed.
  • the lighting device 35 can be incorporated and the lead wire 42 can be wired only on the side of the lower heat insulating material 30b fitted and attached to the lower frame plate 29. Therefore, for example, as compared with the case where the lighting device 35 is mounted on the lower heat insulating material 30b side and the lead wire 42 is mounted on the upper heat insulating material 30a side, the assembling property is remarkably improved and the productivity is improved. Can do.
  • the amount of cold air supplied to the cold air duct portion 32 can be adjusted by a damper or the like, and the low temperature storage chamber 23 can be switched to a partial chamber or a chilled chamber. It is configured.
  • the refrigerator 50 can supply cold air to the front portion of the low-temperature storage chamber 23, thereby preventing the front portion of the low-temperature storage chamber 23 from becoming insufficiently supplied with cold air. it can. Further, the cool air supplied to the front portion of the low temperature storage chamber 23 flows to the cool air return port 43 behind the low temperature storage chamber 23, and the inside of the low temperature storage chamber 23 can be uniformly cooled. Therefore, the temperature unevenness in the low temperature storage chamber 23 and the occurrence of dew condensation due to this can be suppressed, and the cold preservation performance of the food can be improved and the reliability can be enhanced.
  • the cold air outlet 31 is formed.
  • the rear part that is, the rear side part of the main body 1 is a non-porous part in which the cold air outlet 31 is not provided, but it is not limited to this structure.
  • several cold air outlets 31 may be provided in the non-porous portion. That is, the cold air outlet 31 is concentrated on the front end portion of the heat insulating material 30 so that the cold air blown from the front side of the low temperature storage chamber 23 occupies most of the cold air blown into the low temperature storage chamber 23. As long as it is formed.
  • the cold air outlet is arranged in the heat insulating material so that more cold air is supplied to the front side of the low temperature storage chamber than to the rear side.
  • a cold air outlet is formed concentrating on the front end portion of the heat insulating material of the shelf board member. More specifically, a large number of cold air outlets are concentrated on the front end portion of the heat insulating material of the shelf board member.
  • the cool air blowout opening provided in the front end portion of the heat insulating material of the shelf member has a total opening area larger than the total opening area of the cold air blowing opening provided in the rear portion of the heat insulating material.
  • the blowout port is formed, it is included in the form in which the cool air blowout port is formed concentrated on the front end portion of the heat insulating material of the shelf board member. With such a configuration, it is possible to suppress temperature unevenness in the low-temperature storage chamber and occurrence of condensation due to this.
  • the present invention provides a highly reliable refrigerator by suppressing temperature unevenness and condensation in the low-temperature storage room. Therefore, it can be widely used not only for home use but also for commercial refrigerators and showcases.
  • SYMBOLS 1 Main body 7 Refrigeration room 14 Machine room 15 Compressor 16 Cooling room 17 Cooling air passage 19 Cooler 20 Cooling fan 21 Shelf board 22 Water supply tank room 23 Low temperature storage room 24 Shelf board member 24b End part 25 Container 26 Cover plate 27 Shelf frame member 28 Upper plate 29 Lower frame plate (lower plate) DESCRIPTION OF SYMBOLS 30 Heat insulating material 30a Upper heat insulating material 30b Lower heat insulating material 31, 31b Cold air outlet 32 Cold air duct part 33 Cold air inlet 34 Recessed part 35 Illumination device 36 Wall width for heat insulation 36W Wall bandwidth for heat insulation 37 Substrate 38 Light source body 39 Transparent cover 40 Holding piece 41 Wiring groove 42 Lead wire 43 Cool air return port 44 Heater

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  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
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Abstract

Provided is a refrigerator in which: a cold air duct section (32) is formed in a thermal insulation member (30) of a shelf member (24) serving as a top of a cold storage chamber (23); and the thermal insulation member (30) is disposed up to substantially a forward end of the shelf member (24), and the cold air duct section (32) extends up to a forward end portion of the thermal insulation member (30). At the cold air duct section (32) of the thermal insulation member (30), cold air outlets (31) are formed in a concentrated manner at the forward side of the cold storage chamber (23) so that more cold air is supplied to the forward side than the rear side thereof. Further, a cold air return opening (43) is provided to a rear section of the cold storage chamber (23).

Description

冷蔵庫refrigerator
 本発明は冷蔵庫に関し、特に冷蔵室内に低温貯蔵室が設けられた冷蔵庫に関する。 The present invention relates to a refrigerator, and more particularly to a refrigerator in which a low-temperature storage chamber is provided in a refrigerator.
 一般に家庭用冷蔵庫は、冷蔵室、野菜室および冷凍室等を備える。さらに、冷蔵室内には、冷蔵室よりも低温に冷却されるチルド室(冷蔵室よりも低く約1℃の温度帯とする室)、パーシャル室(約-3℃の微凍結温度帯とする室)、または、これらに切り替え可能な第三温度帯室等の低温貯蔵室が設けられたものが知られている(例えば、特許文献1参照)。 Generally, a household refrigerator is equipped with a refrigerator room, a vegetable room, a freezer room, and the like. Furthermore, the chilled room includes a chilled room (a room having a temperature range of about 1 ° C. lower than that of the refrigerated room) and a partial room (a room having a slight freezing temperature range of about −3 ° C.). Or a low-temperature storage chamber such as a third temperature zone chamber that can be switched to these is known (for example, see Patent Document 1).
 図15は、従来の冷蔵庫の低温貯蔵室部分の概略断面図であり、図16は、従来の冷蔵庫の低温貯蔵室の拡大断面図である。図15および図16において、紙面の左側が冷蔵庫100の前方であり、右側が冷蔵庫100の後方である。冷蔵庫100は、冷蔵室101と、冷蔵室101の下部に設けられた低温貯蔵室102とが配設されている。低温貯蔵室102は、その上面が、冷蔵室101の最下段に位置する棚板としても利用される棚板部材103で覆われている。 FIG. 15 is a schematic cross-sectional view of a low-temperature storage chamber portion of a conventional refrigerator, and FIG. 16 is an enlarged cross-sectional view of a low-temperature storage chamber of a conventional refrigerator. 15 and 16, the left side of the paper is the front of the refrigerator 100, and the right side is the rear of the refrigerator 100. The refrigerator 100 is provided with a refrigerating room 101 and a low temperature storage room 102 provided at the lower part of the refrigerating room 101. The upper surface of the low-temperature storage chamber 102 is covered with a shelf member 103 that is also used as a shelf located at the lowest level of the refrigerator compartment 101.
 棚板部材103は、断熱材104が一体化して構成されており、低温貯蔵室102内を比較的温度の高い冷蔵室101から断熱している。さらに、断熱材104中には、冷気ダクト部105が設けられており、冷気ダクト部105によって本体106側から送られてくる冷気を低温貯蔵室102内に供給している。 The shelf member 103 is configured by integrating a heat insulating material 104 and insulates the inside of the low temperature storage chamber 102 from the refrigerator compartment 101 having a relatively high temperature. Further, a cool air duct portion 105 is provided in the heat insulating material 104, and cool air sent from the main body 106 side by the cool air duct portion 105 is supplied into the low temperature storage chamber 102.
 更に、棚板部材103の前方下面には、傾斜面が設けられ、この傾斜面に低温貯蔵室102内を照射する照明装置107が設けられている。 Furthermore, an inclined surface is provided on the front lower surface of the shelf board member 103, and an illuminating device 107 for irradiating the inside of the low temperature storage chamber 102 is provided on the inclined surface.
 図15および図16に示すような従来の冷蔵庫100においては、低温貯蔵室102は、冷気ダクト部105に設けられた多数の冷気吹出し口108より冷気を吹き出して冷却することができる。その結果、冷蔵室101内にあっても、冷蔵室101内の温度より低い温度、例えば上述したように1℃或いは-3℃前後の低温に冷却することができ、肉および魚等を冷却保存するのに適していて重宝されている。 In the conventional refrigerator 100 as shown in FIGS. 15 and 16, the low temperature storage chamber 102 can be cooled by blowing cool air from a large number of cool air outlets 108 provided in the cool air duct portion 105. As a result, even in the refrigerating chamber 101, it can be cooled to a temperature lower than the temperature in the refrigerating chamber 101, for example, as low as about 1 ° C. or −3 ° C. as described above, and meat and fish etc. can be cooled and stored. It is suitable for doing and is useful.
 しかしながら、冷気ダクト部105に設けられた冷気吹出し口108は、冷気ダクト部105が低温貯蔵室102の天井となる棚板部材103全体に均等に形成されておらず、後方部に部分的に形成されているのみであるため、低温貯蔵室102の前方部分は冷却不足気味になり、低温貯蔵室102内に温度ムラが発生しやすい傾向がある。また、このような温度ムラによって局部的に結露が発生することもある。 However, the cold air outlet 108 provided in the cold air duct portion 105 is not formed evenly on the entire shelf plate member 103 where the cold air duct portion 105 becomes the ceiling of the low temperature storage chamber 102, and is partially formed in the rear portion. Therefore, the front portion of the low-temperature storage chamber 102 tends to be undercooled, and temperature unevenness tends to occur in the low-temperature storage chamber 102. Further, such temperature unevenness may cause local condensation.
特開2012-220047号公報JP 2012-220047 A
 本発明は、上記のような従来の冷蔵庫における問題に鑑みてなされたものであり、低温貯蔵室内の温度ムラおよび結露発生を抑制して、信頼性の高い冷蔵庫を提供する。 The present invention has been made in view of the problems in the conventional refrigerator as described above, and provides a highly reliable refrigerator by suppressing temperature unevenness and condensation in the low-temperature storage chamber.
 すなわち、本発明の実施の形態の一例による冷蔵庫は、本体と、本体内部に設けられた冷蔵室と、冷蔵室の下部に設けられた低温貯蔵室とを備える。低温貯蔵室は、天井を構成する棚板部材を有し、棚板部材は、低温貯蔵室内を冷蔵室から断熱する断熱材を有する。 That is, the refrigerator according to an example of the embodiment of the present invention includes a main body, a refrigerating room provided inside the main body, and a low-temperature storage room provided at the lower part of the refrigerating room. The low-temperature storage chamber has a shelf member that constitutes a ceiling, and the shelf member has a heat insulating material that insulates the low-temperature storage chamber from the refrigerator compartment.
 断熱材には、冷蔵庫本体背面の冷気通路より冷気を取り入れる冷気ダクト部が設けられ、断熱材は、棚板部材の後方端部から実質的に前方端まで設けられている。冷気ダクト部は、断熱材の後方部分から前方端部分まで形成され、断熱材の前方端部分に冷気吹出し口が集中して形成されている。また、低温貯蔵室の後方部には、冷気戻り口が設けられている。 The heat insulating material is provided with a cold air duct portion for taking in cold air from the cold air passage on the back of the refrigerator main body, and the heat insulating material is provided substantially from the rear end portion of the shelf board member to the front end. The cold air duct portion is formed from the rear portion to the front end portion of the heat insulating material, and the cold air outlets are concentrated on the front end portion of the heat insulating material. In addition, a cool air return port is provided at the rear of the low temperature storage chamber.
 このような構成により、低温貯蔵室の前方側にも冷気を供給できるので、低温貯蔵室の前方側が冷気供給不足気味になることを防止できる。さらに、低温貯蔵室の前方側に供給された冷気は、低温貯蔵室後方の冷気戻り口へと流れる。すなわち、低温貯蔵室の前方側に供給された冷気は、低温貯蔵室の前方から後方へと流れるので、低温貯蔵室内を均一に冷却することができる。したがって、低温貯蔵室内の温度ムラおよびこれによる結露発生を抑制することができ、食品を良好な状態に冷却保存できて信頼性を高めることができる。 With this configuration, cold air can be supplied to the front side of the low-temperature storage room, so that it is possible to prevent the front side of the low-temperature storage room from becoming insufficiently supplied with cold air. Further, the cool air supplied to the front side of the low temperature storage chamber flows to the cool air return port behind the low temperature storage chamber. That is, since the cold air supplied to the front side of the low temperature storage chamber flows from the front to the rear of the low temperature storage chamber, the low temperature storage chamber can be uniformly cooled. Therefore, temperature unevenness in the low-temperature storage chamber and the occurrence of condensation due to this can be suppressed, and the food can be cooled and stored in a good state, thereby improving reliability.
 本発明の実施の形態の一例による冷蔵庫は、棚板部材の下面に、断熱材中の冷気ダクト部内において、棚板部材の上面に向かって突出する凹部が形成されていてもよい。また、本発明の実施の形態の一例による冷蔵庫は、凹部に照明装置が設けられ、冷気吹出し口が、照明装置よりも前方の部分に設けられていてもよい。 In the refrigerator according to an example of the embodiment of the present invention, a recess that protrudes toward the upper surface of the shelf member may be formed on the lower surface of the shelf member in the cool air duct portion in the heat insulating material. Moreover, the refrigerator by an example of embodiment of this invention may be provided with the illuminating device in the recessed part, and the cool air outlet may be provided in the front part rather than the illuminating device.
 このような構成により、低温貯蔵室内を効率よく照明できるので、低温貯蔵室内部の視認性を向上させることができる。これと同時に、照明装置が設けられていても低温貯蔵室の前方側に冷気を供給することができ、低温貯蔵室内の温度ムラおよび結露発生を確実に抑制することができる。 Such a configuration can efficiently illuminate the low temperature storage room, so that the visibility of the inside of the low temperature storage room can be improved. At the same time, even if a lighting device is provided, cold air can be supplied to the front side of the low-temperature storage chamber, and temperature unevenness and condensation in the low-temperature storage chamber can be reliably suppressed.
 また、本発明の実施の形態の一例による冷蔵庫は、断熱材が、照明装置が設けられた凹部の外周部分に断熱用壁帯域を備えていてもよい。 Further, in the refrigerator according to an example of the embodiment of the present invention, the heat insulating material may include a heat insulating wall zone in an outer peripheral portion of the recess provided with the lighting device.
 このような構成により、照明装置の周りが冷気の流れる冷気ダクト部になっていても、冷気ダクト部内を流れる冷気は、照明装置が設けられた凹部周りの断熱用壁帯域によって断熱される。したがって、照明装置が過冷却されて照明装置に結露が発生することがないので、低温貯蔵室内の冷却均一化を実現でき、さらに照明装置が結露によって故障する等を防止できる。 With such a configuration, even if the surroundings of the lighting device is a cold air duct portion through which the cold air flows, the cold air flowing in the cold air duct portion is insulated by the heat insulating wall zone around the recess provided with the lighting device. Accordingly, since the lighting device is not supercooled and condensation does not occur in the lighting device, it is possible to achieve uniform cooling in the low-temperature storage chamber and to prevent the lighting device from failing due to condensation.
 また、本発明の実施の形態の一例による冷蔵庫は、低温貯蔵室における棚板部材の後方端部と対向する底面部分に、ヒータが配置されていてもよい。 Further, in the refrigerator according to an example of the embodiment of the present invention, a heater may be disposed on a bottom surface portion facing the rear end portion of the shelf member in the low temperature storage chamber.
 このような構成により、本体背面の冷気通路からの低温冷気による冷輻射によって低温化しやすい低温貯蔵室の背面部分近傍の過冷却を抑制できる。したがって、低温貯蔵室の温度ムラおよび結露発生をより確実に抑制することができ、さらに信頼性を向上させることができる。 Such a configuration makes it possible to suppress overcooling in the vicinity of the back portion of the low-temperature storage room, which is likely to be lowered in temperature due to cold radiation from low-temperature cold air from the cold air passage on the back of the main body. Therefore, temperature unevenness and dew condensation in the low temperature storage chamber can be more reliably suppressed, and the reliability can be further improved.
 また、本発明の実施の形態の一例による冷蔵庫は、本体が、低温貯蔵室の側部に製氷用の給水タンク室を備え、低温貯蔵室の底部の給水タンク室と隣接する部分にヒータが配置されていてもよい。 In the refrigerator according to an example of the embodiment of the present invention, the main body includes a water supply tank chamber for ice making at the side of the low temperature storage chamber, and a heater is disposed at a portion adjacent to the water supply tank chamber at the bottom of the low temperature storage chamber. May be.
 このような構成により、比較的低温に冷却する低温貯蔵室の隣に給水タンク室が設けられていても、低温貯蔵室内の冷気および本体背面の冷気通路内の低温冷気による冷輻射によって給水タンク室内の通水経路が氷結することを防止できる。したがって、低温貯蔵室が給水タンク室側部まで広げて設けられ、室内が広げられた低温貯蔵室の内部の温度ムラおよび結露発生を抑制して信頼性を向上させることができる。 With such a configuration, even if a water supply tank room is provided next to a low temperature storage room that is cooled to a relatively low temperature, the water supply tank room is cooled by the cold air in the low temperature storage room and the low temperature cold air in the cold air passage at the back of the main body. It is possible to prevent freezing of the water passage. Therefore, the low temperature storage chamber is provided to extend to the side of the water supply tank chamber, and it is possible to improve the reliability by suppressing the temperature unevenness and the occurrence of condensation inside the low temperature storage chamber in which the interior is expanded.
図1は、本発明の実施の形態における冷蔵庫の正面図である。FIG. 1 is a front view of the refrigerator in the embodiment of the present invention. 図2は、本発明の実施の形態における冷蔵庫の扉が開かれたときの正面図である。FIG. 2 is a front view when the refrigerator door in the embodiment of the present invention is opened. 図3は、本発明の実施の形態における冷蔵庫の縦断面図である。FIG. 3 is a longitudinal sectional view of the refrigerator in the embodiment of the present invention. 図4は、本発明の実施の形態における冷蔵庫の冷蔵室下部に設けられた低温貯蔵室の拡大斜視図である。FIG. 4 is an enlarged perspective view of a low-temperature storage room provided in the lower part of the refrigerator compartment of the refrigerator in the embodiment of the present invention. 図5は、本発明の実施の形態における冷蔵庫の低温貯蔵室の拡大断面図である。FIG. 5 is an enlarged cross-sectional view of the low-temperature storage room of the refrigerator in the embodiment of the present invention. 図6は、本発明の実施の形態における冷蔵庫の低温貯蔵室の棚板部材の分解斜視図である。FIG. 6 is an exploded perspective view of the shelf member of the low-temperature storage chamber of the refrigerator in the embodiment of the present invention. 図7は、本発明の実施の形態における冷蔵庫の低温貯蔵室の棚板部材を上方から見た斜視図である。FIG. 7 is a perspective view of the shelf member of the low-temperature storage chamber of the refrigerator according to the embodiment of the present invention as viewed from above. 図8は、本発明の実施の形態における冷蔵庫の低温貯蔵室の棚板部材を下方から見た斜視図である。FIG. 8: is the perspective view which looked at the shelf board member of the low-temperature storage room of the refrigerator in embodiment of this invention from the downward direction. 図9は、本発明の実施の形態における冷蔵庫の低温貯蔵室の棚板部材の上断熱材が取り外された状態の平面図である。FIG. 9 is a plan view showing a state in which the upper heat insulating material of the shelf member of the low temperature storage room of the refrigerator in the embodiment of the present invention is removed. 図10は、本発明の実施の形態における冷蔵庫の低温貯蔵室底部を示す平面図である。FIG. 10 is a plan view showing the bottom of the low-temperature storage room of the refrigerator in the embodiment of the present invention. 図11は、図9の11-11断面図である。11 is a cross-sectional view taken along the line 11-11 in FIG. 図12は、本発明の実施の形態における冷蔵庫の低温貯蔵室容器が引き出されたときの照明状態を示す説明図である。FIG. 12 is an explanatory diagram showing an illumination state when the low-temperature storage chamber container of the refrigerator in the embodiment of the present invention is pulled out. 図13は、図9の13-13断面図である。13 is a cross-sectional view taken along line 13-13 of FIG. 図14は、本発明の実施の形態における冷蔵庫の低温貯蔵室における照明状態を説明するための図である。FIG. 14 is a diagram for explaining an illumination state in the low-temperature storage room of the refrigerator in the embodiment of the present invention. 図15は、従来の冷蔵庫の低温貯蔵室部分を示す概略断面図である。FIG. 15: is a schematic sectional drawing which shows the low temperature store room part of the conventional refrigerator. 図16は、従来の冷蔵庫の低温貯蔵室構成を示す拡大断面図である。FIG. 16 is an enlarged cross-sectional view illustrating a configuration of a low-temperature storage chamber of a conventional refrigerator.
 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本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 to the embodiments.
 (実施の形態)
 図1~図14を用いて、本発明の実施の形態の一例を示す。まず、冷蔵庫全体の構成について説明する。
(Embodiment)
An example of an embodiment of the present invention will be described with reference to FIGS. First, the structure of the whole refrigerator is demonstrated.
 図1は、本発明の実施の形態における冷蔵庫の正面図、図2は、本発明の実施の形態における冷蔵庫の扉が開かれたときの正面図、および、図3は、本発明の実施の形態における冷蔵庫の縦断面図である。なお、図3においては、左側が冷蔵庫の前方、右側が後方である。 FIG. 1 is a front view of a refrigerator in the embodiment of the present invention, FIG. 2 is a front view when the door of the refrigerator in the embodiment of the present invention is opened, and FIG. 3 is an embodiment of the present invention. It is a longitudinal cross-sectional view of the refrigerator in a form. In FIG. 3, the left side is the front of the refrigerator and the right side is the rear.
 図1~図3において、本実施の形態の冷蔵庫50は、前方が開口した本体1を備える。本体1は、図3に示すように、主に鋼板が用いられた外箱2と、ABSなどの硬質樹脂で成型された内箱3と、外箱2と内箱3との間に充填された硬質発泡ウレタン等の発泡断熱材4とから構成されている。 1 to 3, the refrigerator 50 according to the present embodiment includes a main body 1 having an opening at the front. As shown in FIG. 3, the main body 1 is filled between an outer box 2 mainly using a steel plate, an inner box 3 formed of a hard resin such as ABS, and the outer box 2 and the inner box 3. And a foam heat insulating material 4 such as hard foam urethane.
 本体1は、仕切板5,6,6aによって複数の貯蔵室に区分されている。具体的には、本体1は、最上部に位置する冷蔵室7、冷蔵室7の下部に位置する切替室8aおよび切替室8aに並設された製氷室8b、切替室8aおよび製氷室8bの下部に位置する冷凍室9、並びに、冷凍室9の下部に位置する野菜室10の各貯蔵室を有する。各貯蔵室の前面開口部は、扉11a,11b,11c,11d,11eによって開閉可能に閉塞されている。 The main body 1 is divided into a plurality of storage rooms by partition plates 5, 6, 6a. Specifically, the main body 1 includes a refrigerating chamber 7 positioned at the top, a switching chamber 8a positioned at the bottom of the refrigerating chamber 7, and an ice making chamber 8b juxtaposed to the switching chamber 8a, a switching chamber 8a, and an ice making chamber 8b. It has each freezer compartment 9 located in the lower part, and each storage room of the vegetable compartment 10 located in the lower part of the freezer compartment 9. Front openings of the storage chambers are closed by doors 11a, 11b, 11c, 11d, and 11e so that they can be opened and closed.
 本体1の上部後方領域には、機械室14が設けられている。機械室14には、圧縮機15および水分除去を行うドライヤ等の冷凍サイクルの高圧側構成部品が収容されている。 A machine room 14 is provided in the upper rear region of the main body 1. The machine room 14 accommodates a compressor 15 and high-pressure side components of the refrigeration cycle such as a dryer for removing moisture.
 また、本体1の背面には、冷気を生成する冷却室16と、冷却室16からの冷気を冷蔵室7、野菜室10および冷凍室9に供給循環させる冷気通路17とが設けられている。 Further, a cooling chamber 16 for generating cold air and a cold air passage 17 for supplying and circulating the cold air from the cooling chamber 16 to the refrigerating chamber 7, the vegetable chamber 10 and the freezing chamber 9 are provided on the back surface of the main body 1.
 冷却室16内には、冷却器19が配設されており、冷却器19の上部には、冷却ファン20が配置されている。冷却ファン20は、冷却器19により冷却された冷気を、冷気通路17を介して、冷蔵室7、野菜室10および冷凍室9に強制循環させて各室を冷却する。 A cooler 19 is disposed in the cooling chamber 16, and a cooling fan 20 is disposed above the cooler 19. The cooling fan 20 forcibly circulates the cool air cooled by the cooler 19 through the cool air passage 17 to the refrigerating room 7, the vegetable room 10, and the freezing room 9 to cool each room.
 冷蔵室7は、食材が凍らない程度の温度、すなわち通常1℃~5℃に冷却され、野菜室10は、冷蔵室7と同等もしくは若干高めの温度、例えば2℃~7℃に冷却される。また、冷凍室9は、冷凍保存のために、通常-22℃~-15℃の冷凍温度帯に冷却されており、場合によっては冷凍保存状態向上のために、例えば-30℃または-25℃の低温に冷却されることもある。 The refrigerator compartment 7 is cooled to a temperature at which the ingredients are not frozen, that is, usually 1 ° C. to 5 ° C., and the vegetable compartment 10 is cooled to a temperature equal to or slightly higher than the refrigerator compartment 7, for example, 2 ° C. to 7 ° C. . The freezer compartment 9 is usually cooled to a freezing temperature range of −22 ° C. to −15 ° C. for frozen storage, and in some cases, for example, −30 ° C. or −25 ° C. to improve the frozen storage state. It may be cooled to a low temperature.
 冷却室16からの冷気によって冷却される冷蔵室7には、食材が載置される複数の棚板21が設けられている。さらに、側壁前部には、照明装置が設置されており、照明装置は、扉11aが開かれると点灯し、冷蔵室7内を照射するように構成されている。 In the refrigerator compartment 7 cooled by the cold air from the cooling compartment 16, a plurality of shelf boards 21 on which food is placed are provided. Further, an illuminating device is installed in the front portion of the side wall, and the illuminating device is turned on when the door 11a is opened, and is configured to irradiate the inside of the refrigerator compartment 7.
 また、冷蔵室7には、その下部に製氷用の給水タンクが設置される給水タンク室22と、その横に隣接して約1℃の温度帯に冷却されるチルド室、または、約-3℃の微凍結温度帯まで冷却されるパーシャル室に切り替え可能な低温貯蔵室23が区画形成されている。 The refrigerating chamber 7 has a water supply tank chamber 22 in which a water supply tank for ice making is installed at the lower portion thereof, a chilled chamber that is cooled to a temperature zone of about 1 ° C. adjacent to the side, or about −3 A low-temperature storage chamber 23 that can be switched to a partial chamber cooled to a slight freezing temperature zone of 0 ° C. is defined.
 なお、低温貯蔵室23は、チルド室またはパーシャル室に切り替え可能なものでなく、チルド室またはパーシャル室として専用に使用されるように設計されていてもよい。 Note that the cold storage room 23 is not switchable to a chilled room or a partial room, but may be designed to be used exclusively as a chilled room or a partial room.
 以下、低温貯蔵室23の構成について、図4~図14を用いて説明する。 Hereinafter, the configuration of the low temperature storage chamber 23 will be described with reference to FIGS.
 図4は、本発明の実施の形態における冷蔵庫の冷蔵室下部に設けられた低温貯蔵室の拡大斜視図であり、図4において右下側が前方、左上側が後方である。図5は、本発明の実施の形態における冷蔵庫の低温貯蔵室の拡大断面図であり、図5において左側が前方、右側が後方である。 FIG. 4 is an enlarged perspective view of a low-temperature storage room provided at the lower part of the refrigerator compartment of the refrigerator according to the embodiment of the present invention. In FIG. 4, the lower right side is the front and the upper left side is the rear. FIG. 5 is an enlarged cross-sectional view of the low-temperature storage room of the refrigerator according to the embodiment of the present invention. In FIG. 5, the left side is the front and the right side is the rear.
 まず、図4および図5に示すように、本実施の形態の冷蔵庫50の低温貯蔵室23は、その上面が冷蔵室7の最下段に位置する棚板としても利用される棚板部材24で区画形成され、側面が給水タンク室22との間を仕切る間仕切り板22aで区画形成されている。低温貯蔵室23の内部には、引出自在な容器25が設けられている。容器25の前方は、容器25が引出されることによって棚板部材24の前端部を中心に回動して開く蓋板26によって閉蓋されている。 First, as shown in FIG. 4 and FIG. 5, the low-temperature storage chamber 23 of the refrigerator 50 of the present embodiment is a shelf plate member 24 that is also used as a shelf plate whose upper surface is located at the lowest stage of the refrigerator compartment 7. A partition is formed, and a side surface is partitioned by a partition plate 22 a that partitions the water supply tank chamber 22. A container 25 that can be pulled out is provided inside the low-temperature storage chamber 23. The front side of the container 25 is closed by a cover plate 26 that rotates around the front end of the shelf plate member 24 and opens as the container 25 is pulled out.
 図6は、本発明の実施の形態における冷蔵庫の低温貯蔵室を構成する棚板部材の分解斜視図であり、図6における左下側が冷蔵庫の前方、右上側が後方である。図7は、本発明の実施の形態における冷蔵庫の棚板部材を上方から見た斜視図であり、図7における左下側が前方、右上側が後方である。図8は、本発明の実施の形態における冷蔵庫の棚板部材を下方から見た斜視図であり、図8における右上側が冷蔵庫の前方、左下側が後方である。 FIG. 6 is an exploded perspective view of a shelf plate member constituting the low-temperature storage chamber of the refrigerator in the embodiment of the present invention, with the lower left side in FIG. 6 being the front of the refrigerator and the upper right side being the rear. FIG. 7 is a perspective view of the shelf member of the refrigerator according to the embodiment of the present invention as viewed from above, with the lower left side in FIG. 7 being the front and the upper right side being the rear. FIG. 8 is a perspective view of the shelf member of the refrigerator according to the embodiment of the present invention as viewed from below, with the upper right side in FIG. 8 being the front of the refrigerator and the lower left side being the rear.
 図5、図6、図7および図8に示すように、棚板部材24は、合成樹脂製の棚枠部材27に装着されたガラス板等からなる上板28と、下板となる合成樹脂製の下枠板29と、上板28および下枠板29の間に設けられた発泡スチロール等の断熱材30とから構成されている。断熱材30は、上断熱材30aと下断熱材30bとが重合されて構成されている。また、上断熱材30aと下断熱材30bとが重合されて形成される空間に、冷気ダクト部32が形成されている。 As shown in FIGS. 5, 6, 7, and 8, the shelf member 24 includes an upper plate 28 made of a glass plate and the like mounted on a shelf frame member 27 made of synthetic resin, and a synthetic resin that becomes a lower plate. It is comprised from the lower frame board 29 made from, and the heat insulating materials 30, such as a polystyrene foam provided between the upper board 28 and the lower frame board 29. As shown in FIG. The heat insulating material 30 is configured by polymerizing an upper heat insulating material 30a and a lower heat insulating material 30b. Moreover, the cold air duct part 32 is formed in the space formed by superposing the upper heat insulating material 30a and the lower heat insulating material 30b.
 断熱材30の冷気ダクト部32には、下枠板29に開口する冷気吹出し口31が形成されている。具体的には、本実施の形態では、冷気吹出し口31は、低温貯蔵室23の前方側に後方側よりも多くの冷気が供給されるように、より具体的には、低温貯蔵室23に吹出される冷気の大半が低温貯蔵室23の前方側から吹出されるように、冷気ダクト部32が形成されている断熱材30の前方端部分に、集中して設けられている。 In the cold air duct portion 32 of the heat insulating material 30, a cold air outlet 31 that opens to the lower frame plate 29 is formed. Specifically, in the present embodiment, the cold air outlet 31 is more specifically supplied to the low temperature storage chamber 23 so that more cold air is supplied to the front side of the low temperature storage chamber 23 than to the rear side. It is concentrated on the front end portion of the heat insulating material 30 where the cold air duct portion 32 is formed so that most of the cold air blown out is blown out from the front side of the low temperature storage chamber 23.
 具体的には、例えば、冷気吹出し口31は、低温貯蔵室23の前方側、すなわち、断熱材30の前方端部分に、後方部分よりも数多く集中して設けられている。或いは、冷気吹出し口31は、低温貯蔵室23の前方側に設けられた冷気吹出し口31の開口面積の総和が、低温貯蔵室23の後方側に設けられた吹出し口31の開口面積の総和よりも大きくなるように、前方側に集中して設けられていてもよい。すなわち、冷気吹出し口31は、冷気吹出し口31の数が前方側に集中して設けられていてもよいし、冷気吹出し口31の数に関わらず、低温貯蔵室23の前方側に設けられた冷気吹出し口31の開口面積の総和が、後方側に設けられた冷気吹出し口31の総和よりも大きくなるように設けられていてもよい。 Specifically, for example, the cold air outlets 31 are provided more concentrated on the front side of the low temperature storage chamber 23, that is, on the front end portion of the heat insulating material 30 than the rear portion. Alternatively, in the cold air outlet 31, the total opening area of the cold air outlet 31 provided on the front side of the low temperature storage chamber 23 is greater than the total opening area of the outlet 31 provided on the rear side of the low temperature storage chamber 23. May be concentrated on the front side so as to be larger. That is, the cold air outlet 31 may be provided with the number of the cold air outlets 31 concentrated on the front side, or provided on the front side of the low temperature storage chamber 23 regardless of the number of the cold air outlets 31. The sum of the opening area of the cold air outlet 31 may be provided so as to be larger than the sum of the cold air outlets 31 provided on the rear side.
 また、本実施の形態では、下断熱材30bにも、下枠板29に設けられた冷気吹出し口31に対応する位置に、冷気吹出し口31bが形成されており、冷気ダクト部32は冷気吹出し口31に連通している。 In the present embodiment, the lower heat insulating material 30b is also provided with a cold air outlet 31b at a position corresponding to the cold air outlet 31 provided in the lower frame plate 29, and the cold air duct portion 32 is provided with the cold air outlet 32b. It communicates with the mouth 31.
 棚板部材24が冷蔵室7内にセットされることによって、冷気ダクト部32が、後述する冷気導入口33を介して本体1背面の冷気通路17に連通し、冷気導入口33から低温貯蔵室23内に冷気が供給される。この冷気によって低温貯蔵室23内が冷却される。 By setting the shelf member 24 in the refrigerating chamber 7, the cold air duct portion 32 communicates with the cold air passage 17 on the back surface of the main body 1 through a cold air introducing port 33 described later, and the low temperature storage chamber is connected to the cold air introducing port 33. Cold air is supplied into the interior 23. The inside of the low temperature storage chamber 23 is cooled by this cold air.
 また、冷気ダクト部32が設けられた断熱材30は、棚板部材24の後方端部から実質的に前方端まで配設されている。ここで、実質的に前方端とは、例えば図8に示すように、棚板部材24の前方端、および、前方端から棚板部材24の内方側へ数cmの距離の部分をいう。また、棚板部材24の後方端部とは、棚板部材24の後方側の断熱材30が設けられることができる端部をいい、本実施の形態においては、端部24bをいう(図6参照)。また、棚板部材24の後方部分とは、端部24bおよび端部24bから棚板部材24の前後方向の中心までの部分をいう。 Further, the heat insulating material 30 provided with the cold air duct portion 32 is disposed from the rear end portion of the shelf board member 24 to substantially the front end. Here, the substantially front end means, for example, as shown in FIG. 8, a front end of the shelf board member 24 and a portion having a distance of several centimeters from the front end to the inward side of the shelf board member 24. Further, the rear end portion of the shelf board member 24 refers to an end portion on which the heat insulating material 30 on the rear side of the shelf board member 24 can be provided, and in this embodiment, refers to the end portion 24b (FIG. 6). reference). Further, the rear portion of the shelf board member 24 refers to the end 24b and the part from the end 24b to the center of the shelf board member 24 in the front-rear direction.
 また、本実施の形態においては、冷気ダクト部32が断熱材30の後方部分から前方端部分まで形成されており、冷気ダクト部32が設けられた断熱材30の前方端部分に、冷気吹出し口31が配設されている。ここで、断熱材30の前方端部分とは、図5に示すように、断熱材30の前方端部側、すなわち、断熱材30の前後方向における前方側半分をいい、より好ましくは、断熱材30の前後方向における前方側3分の1の部分、さらに好ましくは、断熱材30の前後方向における前方側4分の1の部分をいう。また、断熱材30の後方部分とは、断熱材30の前後方向における中心より後方の部分をいう。 Moreover, in this Embodiment, the cold air duct part 32 is formed from the back part of the heat insulating material 30 to the front-end part, and the cold air blower outlet is provided in the front end part of the heat insulating material 30 in which the cold air duct part 32 was provided. 31 is disposed. Here, the front end portion of the heat insulating material 30 refers to the front end side of the heat insulating material 30, that is, the front half in the front-rear direction of the heat insulating material 30, as shown in FIG. 30 is a front third portion in the front-rear direction, more preferably a front quarter portion of the heat insulating material 30 in the front-rear direction. Further, the rear portion of the heat insulating material 30 refers to a portion behind the center of the heat insulating material 30 in the front-rear direction.
 このような構成により、冷気ダクト部32が断熱材30の前方端部分まで配設され、低温貯蔵室23内に供給される冷気の大半が冷気ダクト部32を通って冷気吹出し口31から低温貯蔵室23内の前方に供給される。 With such a configuration, the cold air duct portion 32 is disposed up to the front end portion of the heat insulating material 30, and most of the cold air supplied into the low temperature storage chamber 23 passes through the cold air duct portion 32 and is stored at a low temperature from the cold air outlet 31. It is supplied forward in the chamber 23.
 図9は、本発明の実施の形態における冷蔵庫の低温貯蔵室を構成する棚板部材の上断熱材が取り外された状態の平面図であり、図9における下側が冷蔵庫50の前方、上側が後方である。 FIG. 9 is a plan view of a state in which the upper heat insulating material of the shelf board member constituting the low temperature storage room of the refrigerator in the embodiment of the present invention is removed, with the lower side in FIG. 9 being the front of the refrigerator 50 and the upper side being the rear It is.
 図5および図9に示すように、本実施の形態では、断熱材30の下枠板29において、冷気吹出し口31が、後述する照明装置35の前方側に形成され、照明装置35よりも後方、すなわち低温貯蔵室23における後方側は、冷気吹出し口31が形成されていない無孔部として形成されている。このように、本実施の形態では、棚板部材24の断熱材30の前方端部分に冷気吹出し口31が数多く集中して配置されるよう構成されている。 As shown in FIG. 5 and FIG. 9, in the present embodiment, in the lower frame plate 29 of the heat insulating material 30, the cold air outlet 31 is formed on the front side of the lighting device 35 described later, and is behind the lighting device 35. That is, the rear side in the low temperature storage chamber 23 is formed as a non-porous portion in which the cold air outlet 31 is not formed. Thus, in this Embodiment, it is comprised so that many cold air outlets 31 may be concentrated and arrange | positioned in the front-end part of the heat insulating material 30 of the shelf board member 24. FIG.
 また、図5に示すように、冷気吹出し口31が集中して配置された断熱材30の前方端部分とは反対側である、低温貯蔵室23の後方部には冷気戻り口43が設けられている。 Further, as shown in FIG. 5, a cold air return port 43 is provided at the rear portion of the low temperature storage chamber 23, which is opposite to the front end portion of the heat insulating material 30 in which the cold air outlet ports 31 are concentrated. ing.
 図10は、本発明の実施の形態における冷蔵庫の低温貯蔵室の底部を示す平面図であり、図10における下側が冷蔵庫50の前方、上側が後方である。 FIG. 10 is a plan view showing the bottom of the low-temperature storage room of the refrigerator in the embodiment of the present invention, with the lower side in FIG. 10 being the front of the refrigerator 50 and the upper side being the rear.
 図10に示すように、冷気吹出し口31が集中して形成されていない低温貯蔵室23の棚板部材24の後方部分と対向する底面部分に、ヒータ44が敷設されている。ヒータ44は、前方辺部分44aと後方辺部分44bと両側辺部分44cとから構成される。 As shown in FIG. 10, a heater 44 is laid on the bottom surface portion facing the rear portion of the shelf plate member 24 of the low temperature storage chamber 23 where the cold air outlets 31 are not formed in a concentrated manner. The heater 44 includes a front side portion 44a, a rear side portion 44b, and both side portions 44c.
 ヒータ44は、低温貯蔵室23の底面を構成する仕切板5に埋設されている。また、ヒータ44は、低温貯蔵室23の後方側の、冷気吹出し口31が配設されていない無孔部分の外周を囲むように配置されている。すなわち、前方辺部分44aを除く後方辺部分44bおよび両側辺部分44cは、低温貯蔵室23の隅部に位置するよう配置されている。更に、ヒータ44は、冷気戻り口43の近傍部分44dおよび給水タンク室22の近傍部分44eでは折返されて配線が密になるよう形成されている。 The heater 44 is embedded in the partition plate 5 constituting the bottom surface of the low temperature storage chamber 23. In addition, the heater 44 is disposed so as to surround the outer periphery of the non-hole portion on the rear side of the low-temperature storage chamber 23 where the cold air outlet 31 is not disposed. That is, the rear side portion 44 b and the both side portions 44 c except for the front side portion 44 a are arranged so as to be positioned at the corners of the low temperature storage chamber 23. Further, the heater 44 is formed so that the wiring is densely folded at the vicinity 44 d of the cold air return port 43 and the vicinity 44 e of the water supply tank chamber 22.
 図11は、図9の11-11断面図であり、図11において左側が冷蔵庫50の前方、右側が後方である。 11 is a cross-sectional view taken along the line 11-11 in FIG. 9. In FIG. 11, the left side is the front of the refrigerator 50 and the right side is the rear.
 図11に示すように、棚板部材24の断熱材30は、上断熱材30aと下断熱材30bとが重合されて構成されている。上断熱材30aおよび下断熱材30bのいずれか一方もしくは双方の接合面に形成された凹部によって、冷気ダクト部32が形成されている。 As shown in FIG. 11, the heat insulating material 30 of the shelf board member 24 is configured by superposing an upper heat insulating material 30a and a lower heat insulating material 30b. The cold air duct portion 32 is formed by a recess formed in one or both of the upper heat insulating material 30a and the lower heat insulating material 30b.
 断熱材30の上断熱材30aおよび下断熱材30bは、棚板部材24の下枠板29に圧入装着されており、その後部には図5に示すように、本体1の冷気通路17に接続する冷気導入口33が設けられている。 The upper heat insulating material 30a and the lower heat insulating material 30b of the heat insulating material 30 are press-fitted and attached to the lower frame plate 29 of the shelf board member 24, and connected to the cool air passage 17 of the main body 1 at the rear part thereof as shown in FIG. A cold air inlet 33 is provided.
 また、図11に示すように、棚板部材24の下面、すなわち下枠板29には、断熱材30中の冷気ダクト部32内に食い込むように、すなわち断熱材30の上面に向かって突出するように、凹部34が形成されている。凹部34は、下断熱材30bに形成された貫通孔30cに嵌め込まれ、凹部34の内部には、照明装置35が設けられている。 Further, as shown in FIG. 11, the lower surface of the shelf plate member 24, that is, the lower frame plate 29 protrudes toward the upper surface of the heat insulating material 30 so as to bite into the cold air duct portion 32 in the heat insulating material 30. As described above, a recess 34 is formed. The recess 34 is fitted into a through hole 30 c formed in the lower heat insulating material 30 b, and an illumination device 35 is provided inside the recess 34.
 凹部34は、棚板部材24の前後方向(奥行き方向)の中心より前方寄り部分に形成され、照明装置35が低温貯蔵室23の前方寄り部分に位置している。 The recess 34 is formed in a portion closer to the front than the center in the front-rear direction (depth direction) of the shelf board member 24, and the lighting device 35 is located in a portion closer to the front of the low-temperature storage chamber 23.
 図12は、本発明の実施の形態における冷蔵庫の低温貯蔵室の容器が引き出されたときの照明状態を説明する図であり、図12において左側が冷蔵庫50の前方、右側が後方である。 FIG. 12 is a diagram for explaining a lighting state when the container of the cold storage room of the refrigerator in the embodiment of the present invention is pulled out. In FIG. 12, the left side is the front of the refrigerator 50 and the right side is the rear.
 図12に示すように、本実施の形態では、凹部34に設けられた照明装置35は、低温貯蔵室23から引き出された容器25の上面開口の最後端25Bよりも前方側に位置するように構成されている。 As shown in FIG. 12, in the present embodiment, the illumination device 35 provided in the recess 34 is positioned on the front side of the rearmost end 25 </ b> B of the upper surface opening of the container 25 drawn out from the low temperature storage chamber 23. It is configured.
 また、照明装置35が収容された断熱材30の凹部34の外周部分は、図9に示すように、断熱用壁帯域36を残して冷気ダクト部32となるように形成されている。すなわち、冷気ダクト部32は、照明装置35よりも前方側の部分にも連続形成されており、冷気吹出し口31から低温貯蔵室23の前方部分にも冷気が供給されるように構成されている。 Further, as shown in FIG. 9, the outer peripheral portion of the recess 34 of the heat insulating material 30 in which the lighting device 35 is accommodated is formed so as to become the cold air duct portion 32 leaving the heat insulating wall zone 36. That is, the cold air duct portion 32 is continuously formed also in a portion on the front side of the lighting device 35, and the cold air is supplied from the cold air outlet 31 to the front portion of the low-temperature storage chamber 23. .
 凹部34の外周部分に形成されている断熱用壁帯域36は、特に冷気導入口33と対向する部分の断熱用壁帯域幅36Wが他の部分よりも広くなるように形成されている。 The heat insulating wall zone 36 formed in the outer peripheral portion of the recess 34 is formed such that the heat insulating wall bandwidth 36W of the portion facing the cold air inlet 33 is wider than the other portions.
 図13は、図9の13-13断面図であり、本発明の実施の形態における冷蔵庫の本体を正面から見たときの断面図である。 FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 9, and is a cross-sectional view of the main body of the refrigerator according to the embodiment of the present invention as viewed from the front.
 図11および図13に示すように、凹部34に設けられた照明装置35は、基板37と、基板37に設けられたLED等からなる光源体38と、光源体38の下方を覆う透明カバー39とで構成されている。照明装置35は、基板37が、棚板部材24の下枠板29の凹部34に設けられた保持片40の内側に嵌合されて爪係止されている。さらに、透明カバー39は、保持片40の外側に嵌合されて凹部34内に係合装着されている。すなわち、照明装置35は、下枠板29にユニット化されている。 As shown in FIGS. 11 and 13, the illuminating device 35 provided in the recess 34 includes a substrate 37, a light source body 38 made of LEDs and the like provided on the substrate 37, and a transparent cover 39 that covers the lower side of the light source body 38. It consists of and. In the illuminating device 35, the substrate 37 is nail-locked by being fitted inside the holding piece 40 provided in the concave portion 34 of the lower frame plate 29 of the shelf plate member 24. Further, the transparent cover 39 is fitted on the outer side of the holding piece 40 and is fitted in the recess 34. That is, the illumination device 35 is unitized on the lower frame plate 29.
 図9に示すように、棚板部材24の断熱材30を構成する上断熱材30aおよび下断熱材30bには、冷気ダクト部32と同様の凹部で形成された配線溝41が設けられている。照明装置35のリード線42は、配線溝41を通って棚板部材24の後方端部に形成された開口24aより、本体1側の電源リード線に接続されている。 As shown in FIG. 9, the upper heat insulating material 30 a and the lower heat insulating material 30 b constituting the heat insulating material 30 of the shelf board member 24 are provided with a wiring groove 41 formed by a concave portion similar to the cold air duct portion 32. . The lead wire 42 of the illuminating device 35 is connected to the power supply lead wire on the main body 1 side through an opening 24 a formed in the rear end portion of the shelf board member 24 through the wiring groove 41.
 配線溝41は、本実施の形態では、図9に示すように、冷気ダクト部32の冷気吹出し口31を避けるように凹部34の後方一方端部分(図9の左後部分)から前方向けて形成され、そのまま横方向(図9の右方向)に屈曲され、更に棚板部材24側面に沿って後方へと屈曲形成されている。 In the present embodiment, as shown in FIG. 9, the wiring groove 41 is directed forward from the rear one end portion (the left rear portion in FIG. 9) of the concave portion 34 so as to avoid the cold air outlet 31 of the cold air duct portion 32. It is formed, bent as it is in the lateral direction (right direction in FIG. 9), and further bent rearward along the side surface of the shelf board member 24.
 なお、棚板部材24の開口24aは、配線処理後、閉塞板44(図4参照)によって閉塞される。 Note that the opening 24a of the shelf board member 24 is closed by the closing plate 44 (see FIG. 4) after the wiring process.
 図14は、本発明の実施の形態における冷蔵庫の低温貯蔵室における照明状態を説明する図であり、図14において左側が前方、右側が後方である。 FIG. 14 is a diagram for explaining the illumination state in the low-temperature storage room of the refrigerator according to the embodiment of the present invention. In FIG. 14, the left side is the front and the right side is the rear.
 図12および図14に示すように、低温貯蔵室23は、容器25の出し入れを容器検出用スイッチ45で検出するとともに、温度センサ46で温度を検出して冷気の供給を制御し、所定温度に冷却するように構成されている。 As shown in FIGS. 12 and 14, the low temperature storage chamber 23 detects whether the container 25 is put in and out by the container detection switch 45, detects the temperature by the temperature sensor 46, controls the supply of cold air, and sets the temperature to a predetermined temperature. It is configured to cool.
 以上のように構成された冷蔵庫50について、次にその作用効果を説明する。 Next, the function and effect of the refrigerator 50 configured as described above will be described.
 本実施の形態の冷蔵庫50は、冷却運転が開始されると、冷却室16で生成された冷気は、冷気通路17を通って冷蔵室7、野菜室10および冷凍室9に供給されるとともに、棚板部材24に設けられた冷気ダクト部32を経由して冷気吹出し口31から低温貯蔵室23に供給される。 In the refrigerator 50 of the present embodiment, when the cooling operation is started, the cold air generated in the cooling chamber 16 is supplied to the refrigerator compartment 7, the vegetable compartment 10, and the freezer compartment 9 through the cold passage 17, It is supplied from the cold air outlet 31 to the low temperature storage chamber 23 via the cold air duct portion 32 provided in the shelf board member 24.
 このとき、冷気吹出し口31は、棚板部材24の断熱材30の前方端部分に集中して形成されているため、低温貯蔵室23の前方部分に十分な冷気を供給でき、低温貯蔵室23の前方部分が冷気供給不足気味になることを防止できる。 At this time, since the cold air outlet 31 is formed concentrated on the front end portion of the heat insulating material 30 of the shelf board member 24, sufficient cold air can be supplied to the front portion of the low temperature storage chamber 23, and the low temperature storage chamber 23. It is possible to prevent the front portion of the battery from becoming short of cold air supply.
 棚板部材24の実質的に前方端まで配設された断熱材30の前方端部分に設けられた冷気吹出し口31から吹出された冷気は、低温貯蔵室23後方の冷気戻り口43へと流れる。すなわち、冷気吹出し口31から吹出された冷気は、低温貯蔵室23の前方部分から後方部分へと流れる。 The cold air blown from the cold air outlet 31 provided at the front end portion of the heat insulating material 30 disposed substantially up to the front end of the shelf board member 24 flows to the cold air return port 43 at the rear of the low-temperature storage chamber 23. . That is, the cold air blown out from the cold air outlet 31 flows from the front portion to the rear portion of the low temperature storage chamber 23.
 したがって、冷気吹出し口31が、断熱材30の前方端部分に集中して形成されていても、低温貯蔵室23内は、その前方部分から後方部分までの全域にわたって均一に冷却される。 Therefore, even if the cold air outlet 31 is formed concentrated on the front end portion of the heat insulating material 30, the inside of the low temperature storage chamber 23 is uniformly cooled over the entire region from the front portion to the rear portion.
 その結果、低温貯蔵室23内の温度ムラおよびこれによる結露発生を抑制することができ、食品を良好な状態に冷却保存できて信頼性を高めることができる。 As a result, temperature unevenness in the low temperature storage chamber 23 and the occurrence of condensation due to this can be suppressed, and the food can be cooled and stored in a good state, thereby improving the reliability.
 また、冷気吹出し口31が集中形成されていない低温貯蔵室23の棚板部材24の後方部分と対向する底面部分には、ヒータ44が配置されている。このような構成により、本体1背面の冷気通路17からの低温冷気による冷輻射によって低温化しやすい低温貯蔵室23背面部分近傍の過冷却が抑制され、低温貯蔵室23の温度ムラおよび結露発生をより確実に抑制することができる。したがって、更に信頼性を向上させることができる。 Further, a heater 44 is disposed on the bottom surface portion of the low temperature storage chamber 23 where the cold air outlets 31 are not formed in a concentrated manner and facing the rear portion of the shelf plate member 24. With such a configuration, overcooling in the vicinity of the back surface portion of the low-temperature storage chamber 23 that is likely to be lowered by cold radiation from the cold air passage 17 on the back surface of the main body 1 is suppressed, and temperature unevenness and dew condensation in the low-temperature storage chamber 23 are further reduced. It can be surely suppressed. Therefore, the reliability can be further improved.
 特に、ヒータ44は、図10に示すように、本体1背面の冷気通路17からの低温冷気によって過冷却された冷気が滞留しやすい低温貯蔵室23の後方底部の隅部に沿って配置されている。このような構成により、低温貯蔵室23の後方部分、特に後方の隅部、の過冷却が効果的に抑制され、低温貯蔵室23内を効率よく温度ムラの発生を抑制することができる。 In particular, as shown in FIG. 10, the heater 44 is disposed along the corner of the rear bottom of the low temperature storage chamber 23 where the cold air that has been supercooled by the low temperature cold air from the cold air passage 17 on the back of the main body 1 tends to stay. Yes. With such a configuration, overcooling of the rear portion of the low-temperature storage chamber 23, particularly the rear corner, is effectively suppressed, and the occurrence of temperature unevenness in the low-temperature storage chamber 23 can be suppressed efficiently.
 さらに、ヒータ44は、給水タンク室22が隣接する部分の底部の給水タンク室22との境目部分に沿って配置されている。そのため、低温貯蔵室23内の冷気および本体背面の冷気通路17内の低温冷気による冷輻射によって給水タンク室22内の通水経路が氷結することを防止することができる。したがって、低温貯蔵室23を給水タンク室22部分まで広げつつ、温度ムラおよび結露発生を抑制して信頼性を向上させることができる。 Furthermore, the heater 44 is disposed along the boundary portion with the water supply tank chamber 22 at the bottom of the portion adjacent to the water supply tank chamber 22. Therefore, it is possible to prevent the water flow path in the water supply tank chamber 22 from icing due to the cold radiation in the cold storage chamber 23 and the cold radiation in the cold passage 17 on the back of the main body. Therefore, it is possible to improve the reliability by suppressing the temperature unevenness and the occurrence of dew condensation while expanding the low temperature storage chamber 23 to the portion of the water supply tank chamber 22.
 特に、ヒータ44は、給水タンク室22近傍部分44eおよび冷気戻り口43近傍部分44dでは折返されて配線が密に形成されている。このような構成により、温度が低くなりやすい給水タンク室22近傍部分44eおよび冷気戻り口43近傍部分44dの温度低下を確実に抑制でき、低温貯蔵室23内の温度ムラおよび結露発生を抑制して信頼性を向上させることができる。 In particular, the heater 44 is folded back in the vicinity of the water supply tank chamber 22 in the portion 44e and the portion near the cool air return port 44d, and the wiring is densely formed. With such a configuration, it is possible to reliably suppress the temperature drop of the water tank chamber 22 vicinity portion 44e and the cold air return port 43 vicinity portion 44d where the temperature tends to be low, and to suppress temperature unevenness and condensation in the low temperature storage chamber 23. Reliability can be improved.
 また、本実施の形態の冷蔵庫では、棚板部材24に設けられた照明装置35を囲むように冷気ダクト部32が設けられ、また、照明装置35の前方部分に、冷気吹出し口31が設けられている。そのため、照明装置35の前方部分から冷気が吹き出されて照明装置35の前方部分が冷気供給不足気味になることを防止できる。 Further, in the refrigerator of the present embodiment, the cold air duct portion 32 is provided so as to surround the lighting device 35 provided on the shelf plate member 24, and the cold air outlet 31 is provided in the front portion of the lighting device 35. ing. Therefore, it is possible to prevent cold air from being blown out from the front portion of the lighting device 35 and causing the front portion of the lighting device 35 to be in short supply of cold air.
 したがって、低温貯蔵室23内を均一に冷却できる。これとともに、冷蔵室7の扉11aを開くと、冷蔵室7内の照明装置とともに低温貯蔵室23の照明装置35も点灯し、低温貯蔵室23内を照射する。したがって、低温貯蔵室23内に収納されている食品の視認性も向上させることができる。 Therefore, the inside of the low temperature storage chamber 23 can be uniformly cooled. At the same time, when the door 11a of the refrigerator compartment 7 is opened, the illumination device 35 of the low temperature storage chamber 23 is turned on together with the illumination device in the refrigerator compartment 7, and the inside of the low temperature storage chamber 23 is irradiated. Therefore, the visibility of the food stored in the low temperature storage chamber 23 can also be improved.
 特に、本実施の形態の冷蔵庫50では、照明装置35は、棚板部材24の前後方向(奥行き方向)の間(前端部および後端部を除く中間部)の下面に設けられているため、図14に示すように、光源体38からの光は、容器25の後端奥部まで照射することができる。したがって、低温貯蔵室23内の奥部分まで明るくすることができ、低温貯蔵室23内に保存されている食材を明瞭に視認することが可能となる。 In particular, in the refrigerator 50 of the present embodiment, the lighting device 35 is provided on the lower surface of the shelf board member 24 in the front-rear direction (depth direction) (intermediate portion excluding the front end portion and the rear end portion). As shown in FIG. 14, the light from the light source body 38 can be irradiated up to the rear end of the container 25. Therefore, it is possible to brighten the inner part of the low-temperature storage chamber 23, and it is possible to clearly see the food stored in the low-temperature storage chamber 23.
 また、本実施の形態の冷蔵庫では、照明装置35は、低温貯蔵室23から引き出された容器25の上面開口最後端25Bよりも前方側に位置するように設けられているため、容器25が引き出されたときにも、図12に示すように、容器25内を照射することができる。したがって、容器25を引き出した時の食材の視認性も向上させることができる。 Moreover, in the refrigerator of this Embodiment, since the illuminating device 35 is provided so that it may be located ahead of the upper surface opening last end 25B of the container 25 pulled out from the low-temperature storage chamber 23, the container 25 is pulled out. Even in this case, the inside of the container 25 can be irradiated as shown in FIG. Therefore, the visibility of foodstuffs when the container 25 is pulled out can be improved.
 ところで、低温貯蔵室23は、照明装置35の周りの冷気ダクト部32に冷気が流れていて照明装置35が冷却される状態となる。しかし、冷気ダクト部32内を流れる冷気は、照明装置35が設けられた凹部34周りの断熱用壁帯域36によって断熱されるので、照明装置35が過冷却されることを防止できる。したがって、照明装置35に結露が発生するようなことがなく、結露生成付着によるショート故障等の懸念が払拭され、信頼性を高めることができる。 By the way, the cold storage room 23 is in a state in which cold air flows through the cold air duct portion 32 around the lighting device 35 and the lighting device 35 is cooled. However, since the cold air flowing in the cold air duct portion 32 is insulated by the heat insulating wall zone 36 around the recess 34 provided with the lighting device 35, the lighting device 35 can be prevented from being overcooled. Therefore, condensation does not occur in the illuminating device 35, and concerns such as a short circuit failure due to the formation of condensation are eliminated and reliability can be improved.
 特に、本実施の形態では、照明装置35が収容された凹部34周りの断熱用壁帯域36は、図9に示すように、棚板部材24後端部の冷気導入口33と対向する部分の断熱用壁帯域幅36Wが、断熱用壁帯域36の他の部分よりも広く形成されているため、より信頼性を高めることができる。 In particular, in the present embodiment, the heat insulating wall zone 36 around the recess 34 in which the lighting device 35 is accommodated is a portion of the rear end portion of the shelf board member 24 facing the cold air inlet 33 as shown in FIG. Since the heat insulation wall bandwidth 36W is formed wider than the other portions of the heat insulation wall zone 36, the reliability can be further improved.
 すなわち、凹部34の冷気導入口33と対向する部分である断熱用壁帯域幅36Wは、冷気導入口33からの冷気が直接衝突して強く冷却され結露が発生しやすくなる。しかしながら、本実施の形態では、冷気導入口33と対向する部分の断熱用壁帯域幅36Wが特に広く形成されているため、冷気導入口33からの冷気の直接衝突による強い冷却をより確実に断熱できる。したがって、照明装置35の冷気導入口33と対向する部分の過冷却を確実に防止して照明装置35に結露が発生することを防止し、結露によるショート故障等の懸念が払拭され、信頼性を高めることができる。 That is, the heat insulating wall bandwidth 36W, which is the portion of the recess 34 that faces the cold air inlet 33, is strongly cooled by the direct collision of the cold air from the cold air inlet 33, and condensation tends to occur. However, in the present embodiment, the heat insulation wall bandwidth 36W in the portion facing the cold air inlet 33 is formed to be particularly wide, so that the strong cooling due to the direct collision of the cold air from the cold air inlet 33 is more reliably insulated. it can. Therefore, it is possible to reliably prevent overcooling of the portion facing the cold air inlet 33 of the lighting device 35 to prevent condensation from occurring in the lighting device 35, and to eliminate concerns such as a short circuit failure due to condensation. Can be increased.
 また、照明装置35は、低温貯蔵室23の前後方向(奥行き方向)の中心より前方寄り部分に設けられている。このような構成により、前後方向の奥行き寸法が短い低温貯蔵室23であっても、冷気導入口33から照明装置35までの冷気ダクト部32の寸法を所定以上確保することができる。これによって、冷気ダクト部32内への冷気の流入抵抗が増大することを抑制でき、低温貯蔵室23内への冷気供給を良好なものとすることができる。したがって、低温貯蔵室23が-3℃の低温のパーシャル室であったとしても、低温貯蔵室23を確実かつ均一にその温度まで冷却することができる。 Further, the lighting device 35 is provided in a portion closer to the front than the center in the front-rear direction (depth direction) of the low-temperature storage chamber 23. With such a configuration, even in the low-temperature storage chamber 23 having a short depth in the front-rear direction, a predetermined size or more of the cold air duct portion 32 from the cold air inlet 33 to the lighting device 35 can be secured. As a result, it is possible to suppress an increase in the inflow resistance of the cold air into the cold air duct portion 32 and to improve the supply of the cold air into the low temperature storage chamber 23. Therefore, even if the low temperature storage chamber 23 is a low temperature partial chamber of −3 ° C., the low temperature storage chamber 23 can be reliably and uniformly cooled to that temperature.
 更に、照明装置35は、その光源体38の下方部分が透明カバー39で覆われているため、冷蔵室7の扉11aが開閉された際に生じがちな外気の光源体38部分への侵入を防止でき、外気侵入による結露も防止できる。しかも、透明カバー39が設けられたことによって光源体38までの沿面距離を確保できる。したがって、低温貯蔵室23への食材の出し入れ時に手等から光源体38および基板37部分に静電気が流れて光源体38が損傷するようなことも防止できる。よって、信頼性を更に高めることができる。 Further, since the lower part of the light source body 38 is covered with the transparent cover 39, the lighting device 35 prevents the outside air from entering the light source body 38 part that is likely to occur when the door 11a of the refrigerator compartment 7 is opened and closed. It is possible to prevent condensation due to intrusion of outside air. Moreover, a creeping distance to the light source body 38 can be ensured by providing the transparent cover 39. Therefore, it is also possible to prevent the light source body 38 from being damaged due to static electricity flowing from the hand or the like to the light source body 38 and the substrate 37 when the food is taken in and out of the low temperature storage chamber 23. Therefore, reliability can be further improved.
 一方、棚板部材24は、上断熱材30aと下断熱材30bとが重合されて形成される空間に冷気ダクト部32が形成されているため、冷気ダクト部32を容易に形成することができ、生産性を高めることができる。すなわち、冷気通路用凹部が形成された上断熱材30aおよび下断熱材30b(冷気通路用凹部は上断熱材30aおよび下断熱材30bのいずれか一方のみに設けられていてもよい)を組み合わせるだけで、冷気ダクト部32を形成できる。このため、一つの断熱部材の中をくりぬいて冷気ダクト部を形成する場合に比べ、生産性を飛躍的に向上させることができる。しかも、上断熱材30aおよび下断熱材30bの重合面に冷気通路用凹部を形成すればよいので、どのような形状の冷気通路用凹部であっても容易に形成することができる。したがって、冷気通路形状の自由度を向上させることができ、低温貯蔵室23全体を効率よく冷却できる冷気ダクト部32を形成することができる。 On the other hand, the shelf plate member 24 is formed with the cold air duct portion 32 in a space formed by superposing the upper heat insulating material 30a and the lower heat insulating material 30b, so that the cold air duct portion 32 can be easily formed. , Can increase productivity. That is, only the upper heat insulating material 30a and the lower heat insulating material 30b in which the cold air passage recess is formed (the cold air passage recess may be provided in only one of the upper heat insulating material 30a and the lower heat insulating material 30b). Thus, the cold air duct portion 32 can be formed. For this reason, productivity can be dramatically improved compared with the case where the inside of one heat insulation member is hollowed and a cold air duct part is formed. In addition, since the cold passage recesses need only be formed on the overlapping surfaces of the upper heat insulating material 30a and the lower heat insulating material 30b, any shape of the cold air passage recesses can be easily formed. Therefore, the degree of freedom of the cold air passage shape can be improved, and the cold air duct portion 32 that can efficiently cool the entire low temperature storage chamber 23 can be formed.
 また、照明装置35のリード線42が配置される配線溝41も冷気ダクト部32と同様の凹部方式で形成されているため、冷気ダクト部32の場合と同様、配線溝41の形状の自由度を向上させることができる。したがって、冷気ダクト部32を流れる冷気の影響を受けにくい位置に配線溝41を形成して配線自体の結露付着も防止することができ、信頼性を向上させることができる。加えて、別途リード線装着部材等を準備し、これを棚板部材24に装着させてリード線配線部を設けるというような手間が必要なくなり、構成の合理化による部材点数の削減および組み立て工数の削減が図れ、生産性を向上させることができ、かつ、コストダウンも促進できる。 In addition, since the wiring groove 41 in which the lead wire 42 of the lighting device 35 is disposed is also formed in the same recess method as the cold air duct portion 32, the degree of freedom of the shape of the wiring groove 41 is the same as in the case of the cold air duct portion 32. Can be improved. Therefore, the wiring groove 41 can be formed at a position where it is difficult to be affected by the cold air flowing through the cold air duct portion 32, so that the condensation of the wiring itself can be prevented and the reliability can be improved. In addition, there is no need to prepare a lead wire mounting member, etc., and mount the lead wire member on the shelf board member 24 to provide a lead wire wiring portion, thereby reducing the number of members and the number of assembly steps by rationalizing the configuration. Therefore, productivity can be improved and cost reduction can be promoted.
 また、照明装置35は、棚板部材24の下枠板29に設けられた凹部34内に、基板37および透明カバー39が装着されてユニット化されている。このため、上板28および下枠板29の間に上断熱材30aおよび下断熱材30bが組み込まれて棚板部材24が組み立てられると同時に照明装置35の組み込みも完了する。したがって、生産性を向上させることができるとともに、組立工程で搬送される部品点数も削減でき、光源体38等の取り扱いも容易になる。 The lighting device 35 is unitized by mounting a substrate 37 and a transparent cover 39 in a recess 34 provided in the lower frame plate 29 of the shelf plate member 24. For this reason, the upper heat insulating material 30a and the lower heat insulating material 30b are assembled between the upper plate 28 and the lower frame plate 29 to assemble the shelf plate member 24, and at the same time, the incorporation of the lighting device 35 is completed. Therefore, productivity can be improved, the number of parts conveyed in the assembly process can be reduced, and handling of the light source 38 and the like is facilitated.
 特に、本実施の形態で例示したように、貫通孔30cが設けられた下断熱材30b側に、冷気ダクト部32用の凹部および配線溝41用の凹部が設けられていれば、棚板部材24の組立を容易なものとすることができ、生産性をさらに向上させることができる。 In particular, as illustrated in the present embodiment, if the concave portion for the cold air duct portion 32 and the concave portion for the wiring groove 41 are provided on the lower heat insulating material 30b side where the through hole 30c is provided, the shelf plate member The assembly of 24 can be facilitated, and the productivity can be further improved.
 すなわち、図6に示すように、まず棚板部材24の下枠板29の凹部34内に。基板37および透明カバー39を順次嵌め込み装着して照明装置35をユニット化する。次に、ユニット化された下枠板29を裏返して、下枠板29に下断熱材30bを嵌め込む。この状態で、図13に示すように、基板37を嵌め込んだ凹部34の孔部分34Yより基板37からのリード線42を引き出して下断熱材30bに形成された配線溝用凹所に引き回す。そして、下断熱材30bの上から上断熱材30aを重ね合わせ、棚枠部材27と一体の上板28をセットすれば、棚板部材24の組み立てが完了する。 That is, as shown in FIG. 6, first, in the recess 34 of the lower frame plate 29 of the shelf board member 24. The lighting device 35 is unitized by sequentially fitting and mounting the substrate 37 and the transparent cover 39. Next, the unitized lower frame plate 29 is turned over, and the lower heat insulating material 30 b is fitted into the lower frame plate 29. In this state, as shown in FIG. 13, the lead wire 42 from the substrate 37 is pulled out from the hole portion 34Y of the recess 34 into which the substrate 37 is fitted, and is drawn around the wiring groove recess formed in the lower heat insulating material 30b. And if the upper heat insulating material 30a is piled up on the lower heat insulating material 30b and the upper plate 28 integrated with the shelf frame member 27 is set, the assembly of the shelf plate member 24 is completed.
 つまり、下枠板29に嵌め込み装着された下断熱材30b側だけで、照明装置35の組み込みおよびリード線42の配線処理ができる。したがって、例えば照明装置35は、下断熱材30b側に装着され、リード線42は上断熱材30a側に装着されるような場合に比べ、組立て性は格段に向上し、生産性を向上させることができる。 That is, the lighting device 35 can be incorporated and the lead wire 42 can be wired only on the side of the lower heat insulating material 30b fitted and attached to the lower frame plate 29. Therefore, for example, as compared with the case where the lighting device 35 is mounted on the lower heat insulating material 30b side and the lead wire 42 is mounted on the upper heat insulating material 30a side, the assembling property is remarkably improved and the productivity is improved. Can do.
 なお、本実施の形態で例示した低温貯蔵室23は、図示しないが、冷気ダクト部32に供給される冷気の量をダンパ等によって調節し、低温貯蔵室23をパーシャル室或いはチルド室に切り替え可能に構成されている。 Although the low temperature storage chamber 23 illustrated in the present embodiment is not illustrated, the amount of cold air supplied to the cold air duct portion 32 can be adjusted by a damper or the like, and the low temperature storage chamber 23 can be switched to a partial chamber or a chilled chamber. It is configured.
 以上説明したように、本発明の実施の形態の一例による冷蔵庫50は、低温貯蔵室23の前方部分に冷気を供給できるので、低温貯蔵室23の前方部分が冷気供給不足気味になることを防止できる。さらに、低温貯蔵室23の前方部分に供給された冷気は、低温貯蔵室23の後方の冷気戻り口43へと流れ、低温貯蔵室23内を均一に冷却することができる。したがって、低温貯蔵室23内の温度ムラおよびこれによる結露発生を抑制することができ、食品の冷却保存性能が向上して信頼性を高めることができる。 As described above, the refrigerator 50 according to an example of the embodiment of the present invention can supply cold air to the front portion of the low-temperature storage chamber 23, thereby preventing the front portion of the low-temperature storage chamber 23 from becoming insufficiently supplied with cold air. it can. Further, the cool air supplied to the front portion of the low temperature storage chamber 23 flows to the cool air return port 43 behind the low temperature storage chamber 23, and the inside of the low temperature storage chamber 23 can be uniformly cooled. Therefore, the temperature unevenness in the low temperature storage chamber 23 and the occurrence of dew condensation due to this can be suppressed, and the cold preservation performance of the food can be improved and the reliability can be enhanced.
 なお、本発明は上記実施の形態に限定されるものではなく、本発明の目的を達成する範囲内で種々変更可能であることは言うまでもない。 It should be noted that the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made within the scope of achieving the object of the present invention.
 例えば、上記実施の形態では、低温貯蔵室23に冷気を供給する冷気吹出し口31が棚板部材24の断熱材30の前方端部分に集中して形成される構成の一例として、冷気吹出し口31が、前方端部分のみに設けられ、後方部分、すなわち本体1の背面側の部分は、冷気吹出し口31が設けられていない無孔部分である構成を説明したが、この構成に限られず、この無孔部分にも、例えば数個程度の冷気吹出し口31が設けられていてもよい。すなわち、冷気吹出し口31は、低温貯蔵室23内に吹出される冷気のうち、低温貯蔵室23の前方側から吹出される冷気がその大半を占めるように、断熱材30の前方端部分に集中して形成されていればよい。 For example, in the above-described embodiment, as an example of a configuration in which the cold air outlet 31 that supplies the cold air to the low temperature storage chamber 23 is concentrated on the front end portion of the heat insulating material 30 of the shelf board member 24, the cold air outlet 31 is formed. However, the rear part, that is, the rear side part of the main body 1 is a non-porous part in which the cold air outlet 31 is not provided, but it is not limited to this structure. For example, several cold air outlets 31 may be provided in the non-porous portion. That is, the cold air outlet 31 is concentrated on the front end portion of the heat insulating material 30 so that the cold air blown from the front side of the low temperature storage chamber 23 occupies most of the cold air blown into the low temperature storage chamber 23. As long as it is formed.
 このように、本発明の実施の形態の一例による冷蔵庫は、低温貯蔵室の前方側に後方側よりも多くの冷気が供給されるよう冷気吹出し口が断熱材に配設されている。具体的には、例えば、棚板部材の断熱材の前方端部分に集中して冷気吹出し口が形成されている。より具体的には、冷気吹出し口が棚板部材の断熱材の前方端部分に数多く集中して形成されている。また、棚板部材の断熱材の前方端部分に設けられた冷気吹出し口の開口面積の総和が、断熱材の後方部分に設けられた冷気吹出し口の開口面積の総和より大きくなるように、冷気吹出し口が形成されている場合も、棚板部材の断熱材の前方端部分に集中して冷気吹出し口が形成されている形態に含まれる。このような構成により、低温貯蔵室内の温度ムラおよびこれによる結露発生を抑制することができる。 Thus, in the refrigerator according to an example of the embodiment of the present invention, the cold air outlet is arranged in the heat insulating material so that more cold air is supplied to the front side of the low temperature storage chamber than to the rear side. Specifically, for example, a cold air outlet is formed concentrating on the front end portion of the heat insulating material of the shelf board member. More specifically, a large number of cold air outlets are concentrated on the front end portion of the heat insulating material of the shelf board member. In addition, the cool air blowout opening provided in the front end portion of the heat insulating material of the shelf member has a total opening area larger than the total opening area of the cold air blowing opening provided in the rear portion of the heat insulating material. Even when the blowout port is formed, it is included in the form in which the cool air blowout port is formed concentrated on the front end portion of the heat insulating material of the shelf board member. With such a configuration, it is possible to suppress temperature unevenness in the low-temperature storage chamber and occurrence of condensation due to this.
 このように、上記実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。 Thus, it should be considered that the above embodiment is illustrative in all respects and not restrictive.
 つまり、本発明の範囲は上述した説明に限られず、請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 That is, the scope of the present invention is not limited to the above description, but is defined by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.
 以上述べたように、本発明は、低温貯蔵室内の温度ムラおよび結露発生を抑制して信頼性が高い冷蔵庫を提供する。よって、家庭用はもちろん業務用冷蔵庫およびショーケース等に広く利用できる。 As described above, the present invention provides a highly reliable refrigerator by suppressing temperature unevenness and condensation in the low-temperature storage room. Therefore, it can be widely used not only for home use but also for commercial refrigerators and showcases.
 1  本体
 7  冷蔵室
 14  機械室
 15  圧縮機
 16  冷却室
 17  冷気通路
 19  冷却器
 20  冷却ファン
 21  棚板
 22  給水タンク室
 23  低温貯蔵室
 24  棚板部材
 24b  端部
 25  容器
 26  蓋板
 27  棚枠部材
 28  上板
 29  下枠板(下板)
 30  断熱材
 30a  上断熱材
 30b  下断熱材
 31,31b  冷気吹出し口
 32  冷気ダクト部
 33  冷気導入口
 34  凹部
 35  照明装置
 36  断熱用壁帯域
 36W  断熱用壁帯域幅
 37  基板
 38  光源体
 39  透明カバー
 40  保持片
 41  配線溝
 42  リード線
 43  冷気戻り口
 44  ヒータ
DESCRIPTION OF SYMBOLS 1 Main body 7 Refrigeration room 14 Machine room 15 Compressor 16 Cooling room 17 Cooling air passage 19 Cooler 20 Cooling fan 21 Shelf board 22 Water supply tank room 23 Low temperature storage room 24 Shelf board member 24b End part 25 Container 26 Cover plate 27 Shelf frame member 28 Upper plate 29 Lower frame plate (lower plate)
DESCRIPTION OF SYMBOLS 30 Heat insulating material 30a Upper heat insulating material 30b Lower heat insulating material 31, 31b Cold air outlet 32 Cold air duct part 33 Cold air inlet 34 Recessed part 35 Illumination device 36 Wall width for heat insulation 36W Wall bandwidth for heat insulation 37 Substrate 38 Light source body 39 Transparent cover 40 Holding piece 41 Wiring groove 42 Lead wire 43 Cool air return port 44 Heater

Claims (5)

  1. 本体と、前記本体の内部に設けられた冷蔵室と、前記冷蔵室の下部に設けられた低温貯蔵室とを備え、前記低温貯蔵室は、天井を構成する棚板部材を有し、前記棚板部材は、前記低温貯蔵室内を前記冷蔵室から断熱する断熱材を有し、前記断熱材には、前記冷蔵庫本体背面の冷気通路より冷気を取り入れる冷気ダクト部が設けられ、前記断熱材は、前記棚板部材の後方端部から実質的に前方端まで設けられ、前記冷気ダクト部は、前記断熱材の後方部分から前方端部分まで形成され、前記断熱材の前記前方端部分に冷気吹出し口が集中して形成されるとともに、前記低温貯蔵室の後方部に冷気戻り口が設けられた冷蔵庫。 A main body, a refrigeration chamber provided inside the main body, and a low-temperature storage chamber provided at a lower portion of the refrigeration chamber, the low-temperature storage chamber having a shelf member constituting a ceiling, and the shelf The plate member has a heat insulating material that insulates the low-temperature storage chamber from the refrigerator compartment, and the heat insulating material is provided with a cold air duct portion that takes in cold air from a cold air passage on the back of the refrigerator main body, The shelf plate member is provided from a rear end portion to a substantially front end, and the cold air duct portion is formed from a rear portion to a front end portion of the heat insulating material, and a cold air outlet is formed in the front end portion of the heat insulating material. And a cold air return port provided at the rear of the low-temperature storage chamber.
  2. 前記棚板部材の下面には、前記断熱材中の前記冷気ダクト部内に、前記棚板部材の上面に向かって突出する凹部が形成され、前記凹部には照明装置が設けられ、前記冷気吹出し口は、前記照明装置よりも前方部分に設けられた請求項1記載の冷蔵庫。 On the lower surface of the shelf member, a concave portion is formed in the cold air duct portion in the heat insulating material so as to protrude toward the upper surface of the shelf plate member, and an illumination device is provided in the concave portion, and the cold air outlet The refrigerator of Claim 1 provided in the front part rather than the said illuminating device.
  3. 前記断熱材は、前記照明装置が設けられた前記凹部の外周部分に断熱用壁帯域を有する請求項2記載の冷蔵庫。 The said heat insulating material is a refrigerator of Claim 2 which has a wall zone for heat insulation in the outer peripheral part of the said recessed part in which the said illuminating device was provided.
  4. 前記低温貯蔵室の前記棚板部材の後方部分と対向する底面部分にヒータが配置された請求項1記載の冷蔵庫。 The refrigerator of Claim 1 by which the heater was arrange | positioned in the bottom face part facing the back part of the said shelf board member of the said low-temperature storage chamber.
  5. 前記本体は前記低温貯蔵室の側部に製氷用の給水タンク室を備え、前記低温貯蔵室の底部の前記給水タンク室と隣接する部分に前記ヒータが配置された請求項4記載の冷蔵庫。 The refrigerator according to claim 4, wherein the main body includes a water supply tank chamber for ice making at a side portion of the low temperature storage chamber, and the heater is disposed at a portion adjacent to the water supply tank chamber at the bottom of the low temperature storage chamber.
PCT/JP2016/003247 2015-07-16 2016-07-08 Refrigerator WO2017010070A1 (en)

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JP2015-142199 2015-07-16
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JP6807881B2 (en) * 2018-02-08 2021-01-06 日立グローバルライフソリューションズ株式会社 refrigerator
WO2019171534A1 (en) * 2018-03-08 2019-09-12 三菱電機株式会社 Refrigerator
CN113883797A (en) * 2020-07-02 2022-01-04 日立环球生活方案株式会社 Refrigerator with a door
TWI785946B (en) * 2021-12-24 2022-12-01 台灣松下電器股份有限公司 Refrigerated appliances with oblique lighting units

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