EP2813770B1 - Outdoor unit for refrigeration device - Google Patents
Outdoor unit for refrigeration device Download PDFInfo
- Publication number
- EP2813770B1 EP2813770B1 EP13746777.5A EP13746777A EP2813770B1 EP 2813770 B1 EP2813770 B1 EP 2813770B1 EP 13746777 A EP13746777 A EP 13746777A EP 2813770 B1 EP2813770 B1 EP 2813770B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cap
- outdoor unit
- heat exchanger
- header manifold
- header
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000005057 refrigeration Methods 0.000 title claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 description 22
- 230000005494 condensation Effects 0.000 description 20
- 238000009833 condensation Methods 0.000 description 20
- 230000007797 corrosion Effects 0.000 description 20
- 238000005260 corrosion Methods 0.000 description 20
- 238000004378 air conditioning Methods 0.000 description 10
- 229920001971 elastomer Polymers 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 238000000638 solvent extraction Methods 0.000 description 4
- 229920001875 Ebonite Polymers 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/36—Drip trays for outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/007—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/06—Safety or protection arrangements; Arrangements for preventing malfunction by using means for draining heat exchange media from heat exchangers
Definitions
- the present invention relates to an outdoor unit of a refrigeration apparatus.
- Outdoor units of a refrigeration apparatus have been reported to have a polypropylene cap or a cage-shaped electrical-corrosion-preventing body provided to the lower end of a header manifold; e.g., as in patent document 1 (Japanese Laid-open Patent Application No. 2011-145029 ). This document discloses the preamble of claim 1.
- An object of the present invention is to provide an outdoor unit of a refrigeration apparatus in which a heat exchanger made of aluminum or an aluminum alloy is used, wherein the outdoor unit of a refrigeration apparatus is not susceptible to metal corrosion.
- Examples of the drainage structure include an opening, a cutout, and a gutter.
- Dew from the heat exchanger includes condensation water and rainwater.
- the material of the cap is preferably rubber in terms of enabling safe mounting of the header manifold as well as providing waterproofness and vibration resistance; examples including natural rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber, styrene-butadiene rubber, silicone rubber, fluorine rubber, AFLAS, hydrogenated nitrile rubber, and urethane rubber.
- the rubber is preferably a hard rubber (hardness: 50).
- An outdoor unit of a refrigeration apparatus is the outdoor unit of a refrigeration apparatus according to the first aspect of the present invention, wherein the cap is configured from a bottom face part and a side face part, and the first drainage structure is provided to the side face part.
- having the drainage structure provided to the side face of the cap allows a larger drainage structure to be used, dew from the heat exchanger that has entered via a gap between the header manifold and the cap to be more efficiently drained to the outside, and heat exchanger corrosion and refrigerant leakage to be more effectively prevented.
- An outdoor unit of a refrigeration apparatus is the outdoor unit of a refrigeration apparatus according to the first or second aspect, wherein the first drainage structure is an opening.
- the bottom face of the opening is provided below the lower end of the header manifold. Furthermore, the bottom face of the opening is set to incline downward from the inside toward the outside.
- having the opening provided to the side face of the cap, the bottom face of the opening below the lower end of the header manifold, and the bottom face of the opening set at an incline allows condensation that has entered into the cap to be more efficiently routed outside the cap and guided to the floor frame, and heat exchanger corrosion and refrigerant leakage to be more effectively prevented.
- An outdoor unit of a refrigeration apparatus is the outdoor unit of a refrigeration apparatus according to the second or third aspect, wherein a projection is provided to the surface facing opposite the bottom face part of the floor frame.
- the lower end of the header manifold is raised by the cap, which allows infiltration of water into the header manifold to be prevented even when condensation accumulates in the floor frame, and heat exchanger corrosion and refrigerant leakage to be further prevented. Furthermore, condensation that has accumulated in the floor frame can be prevented from flowing into the cap and coming into contact with the header manifold.
- An outdoor unit of a refrigeration apparatus is the outdoor unit of a refrigeration apparatus according to the fourth aspect, wherein a second drainage structure is provided to the projection.
- condensation that has entered into the cap can be guided from the drainage structure of the lower part of the cap to the floor frame, which allows heat exchanger corrosion and refrigerant leakage to be prevented.
- Examples of the drainage structure include an opening, a cutout, and a gutter or the like.
- An outdoor unit of a refrigeration apparatus is the outdoor unit of a refrigeration apparatus according to any of the first through fifth aspects, wherein the cap is designed so that there is no gap through which water can enter between the cap and the header manifold.
- the lower end of the header manifold does not come into contact with water even when condensation accumulates in the floor frame, which allows heat exchanger corrosion and refrigerant leakage to be more effectively prevented.
- the cap placed on the lower end of the header manifold and the opening part for draining water provided to the cap makes it possible for dew from the heat exchanger that has entered via a gap between the header manifold and the cap to drain out, and heat exchanger corrosion and refrigerant leakage to be prevented.
- having the drainage structure provided to the side face of the cap allows a larger drainage structure to be used, dew from the heat exchanger that has entered via a gap between the header manifold and the cap to be more efficiently drained out, and heat exchanger corrosion and refrigerant leakage to be further prevented.
- having the opening provided to the side face of the cap, the bottom face of the opening below the lower end of the header manifold, and the bottom face of the opening set at an incline allows condensation that has entered into the cap to be more efficiently routed outside the cap and guided to the floor frame, and heat exchanger corrosion and refrigerant leakage to be further prevented.
- the lower end of the header manifold is raised by the cap, infiltration of water into the header manifold can be prevented even when condensation accumulates in the floor frame, and heat exchanger corrosion and refrigerant leakage can be further prevented. Furthermore, the condensation accumulated in the floor frame can be prevented from flowing into the cap and coming into contact with the header manifold.
- the outdoor unit of a refrigeration apparatus of the present embodiment is used as an outdoor unit of an air-conditioning apparatus.
- FIG. 1 is a perspective view illustrating the outdoor unit 20 of an air-conditioning apparatus.
- the outdoor unit 20 is placed outside a space to be air-conditioned (indoors) where air conditioning is to be performed, and an interior of a roughly rectangular box-form casing 50 is divided into a ventilation compartment and a machine compartment by a partitioning plate (not illustrated) extending vertically.
- the outdoor unit 20 is connected via refrigerant-communicating piping (not illustrated) to an indoor unit (not illustrated) disposed inside the space to be air conditioned.
- the outdoor unit 20 mainly comprises a roughly box-form casing 50, an outdoor fan (not illustrated), refrigerant circuit-configuring parts (not illustrated) including a heat exchanger, a compressor, valves, pipes, and the like, to configure a refrigerant circuit, and an electrical unit (not illustrated) for performing operation and control.
- a blow-out opening positioned at the center and to the left of a front face 51 is formed on the casing 50, and air sent out by the outdoor fan is blown out forward from the blow-out opening.
- the casing 50 has a ceiling plate 57, a right rear plate 56, and a right front plate 55, and additionally has a left side plate 54 and a floor frame 8. "60" indicates a fan grill attached on the outside of the casing 50.
- FIG. 2 is an overall perspective view of an outdoor unit of a refrigeration apparatus according to one embodiment of the present invention in a condition having removed a top plate, a left side plate, a right front plate, and a right rear plate.
- a heat exchanger 25 is mounted on a floor frame 8, and an outdoor fan 35 is disposed in front of the heat exchanger 25.
- the interior is divided by a partitioning plate 58, and as viewed facing the front, the left side is a ventilation compartment and the right side is a machine compartment.
- the outdoor heat exchanger 25 allows refrigerant flowing inside to be condensed or evaporated by heat exchange with outside air.
- the outdoor heat exchanger 25 is made entirely of aluminum or aluminum alloy.
- the outdoor heat exchanger 25 is disposed inside the casing 50 with a proper space from the casing 50, or a resin member, or the like, is disposed between the outdoor heat exchanger 25 and the casing 50, so as not to be in direct contact with the casing 50 (see FIG.1 ).
- FIG. 3 is a general perspective view of an outdoor heat exchanger 25.
- the outdoor heat exchanger 25 has a flat pipe 2, fins 4, and header manifolds 61 and 62.
- the fins 4 are omitted in the illustration in FIG. 3 .
- Some of the reference numerals of the flat pipes 2 also are omitted.
- the header manifolds 61, 62 are connected to the both end of the flat pipes 2 which are arranged in multiple rows towards up and down.
- the header manifolds 61, 62 have functions of supporting the flat pipes 2, guiding refrigerant to an inner channel in the flat pipes 2 (not illustrated), and letting refrigerant coming out of the inner channel collect.
- Each of a lower end 6a, 6a of header manifolds 61, 62 is covered from below by a cap 14 to be described later (see FIG. 7 ).
- FIGS. 4 through 6 illustrate a front view, a plan view, and a sectional view of a cap 14.
- FIG. 7 illustrates a sectional view showing a header manifold 6 mounted on the cap 14.
- the cap 14 is made of a rubber material, and has a bottom face part 15 and a side face part 16.
- the bottom face part 15 is of a cylindrical configuration.
- the side face part 16 of the cylindrical configuration stands vertically upright from an edge portion on the circumference of the circle of the bottom face part 15 viewed from above, whereby a hole 19 into which the lower end part 6a of the header manifold 6 is inserted is formed.
- a lower end 6b of the header manifold 6 is inserted so as to contact an upper face 15b of the bottom face part 15, and the heat exchanger 25 is mounted on the cap 14.
- the cap 14 is formed from hard rubber (hardness: 50) so that the cap 14 will not come free even if the heat exchanger 25 mounted thereon vibrates.
- the cap 14 has a drainage opening 17 in the side face part 16. Condensation from the heat exchanger 25 that has traveled along the header manifold 6 and entered the gap between the header manifold 6 and the cap 14 is drained out from the drainage opening 17.
- a bottom face 17a of the drainage opening 17 is provided below the upper face 15b of the bottom face part 15. Therefore, condensation from the heat exchanger 25 that has traveled along the header manifold 6 and entered the gap between the header manifold 6 and the cap 14 can be more effectively drained.
- the bottom face 17a is set at a downward incline from the inside toward the outside, and drainage of condensation is further promoted.
- a boss 15a is provided to a surface of the bottom face part 15 facing the floor frame 8. Accordingly, even when water accumulates in the floor frame 8, there is minimal likelihood that the lower face part 6a of the header manifold 6 will be immersed in the water.
- outdoor unit 20 illustrated in the above embodiment is used in an air-conditioning apparatus 1, the outdoor unit is not limited to this and may be used in another refrigeration apparatus.
- a drainage opening 18 may be provided to the boss 15a.
- a drainage opening 18 may be provided to the bottom face part 15 (see FIGS. 9 and 10 ).
- 71 indicates a pressure-sensitive adhesive
- 72 indicates release paper. In the resulting structure, water more readily drains from the lower part.
- Patent document 1 Japanese Laid-open Patent Application No. 2011-145029
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Other Air-Conditioning Systems (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
- The present invention relates to an outdoor unit of a refrigeration apparatus.
- Outdoor units of a refrigeration apparatus have been reported to have a polypropylene cap or a cage-shaped electrical-corrosion-preventing body provided to the lower end of a header manifold; e.g., as in patent document 1 (Japanese Laid-open Patent Application No.
2011-145029 claim 1. - However, in cases where water traveling along the header manifold enters the cap or accumulates in a floor frame (a drain pan) in such a configuration, there is a risk of the water infiltrating from a reticulated portion of the cage, contacting the header manifold, and inducing electrical corrosion of the header manifold.
- An object of the present invention is to provide an outdoor unit of a refrigeration apparatus in which a heat exchanger made of aluminum or an aluminum alloy is used, wherein the outdoor unit of a refrigeration apparatus is not susceptible to metal corrosion.
- An outdoor unit of a refrigeration apparatus according to a first aspect of the present is given in
claim 1. - By having the cap placed on the lower end of the header manifold and an opening part for draining water provided to the cap, it is possible for dew from the heat exchanger that has entered via a gap between the header manifold and the cap to drain out, and heat exchanger corrosion and refrigerant leakage to be prevented.
- Examples of the drainage structure include an opening, a cutout, and a gutter.
- Dew from the heat exchanger includes condensation water and rainwater.
- The material of the cap is preferably rubber in terms of enabling safe mounting of the header manifold as well as providing waterproofness and vibration resistance; examples including natural rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber, styrene-butadiene rubber, silicone rubber, fluorine rubber, AFLAS, hydrogenated nitrile rubber, and urethane rubber. The rubber is preferably a hard rubber (hardness: 50).
- An outdoor unit of a refrigeration apparatus according to a second aspect of the present invention is the outdoor unit of a refrigeration apparatus according to the first aspect of the present invention, wherein the cap is configured from a bottom face part and a side face part, and the first drainage structure is provided to the side face part.
- According to the present aspect, having the drainage structure provided to the side face of the cap allows a larger drainage structure to be used, dew from the heat exchanger that has entered via a gap between the header manifold and the cap to be more efficiently drained to the outside, and heat exchanger corrosion and refrigerant leakage to be more effectively prevented.
- An outdoor unit of a refrigeration apparatus according to a third aspect of the present invention is the outdoor unit of a refrigeration apparatus according to the first or second aspect, wherein the first drainage structure is an opening. The bottom face of the opening is provided below the lower end of the header manifold. Furthermore, the bottom face of the opening is set to incline downward from the inside toward the outside.
- According to the present aspect, having the opening provided to the side face of the cap, the bottom face of the opening below the lower end of the header manifold, and the bottom face of the opening set at an incline allows condensation that has entered into the cap to be more efficiently routed outside the cap and guided to the floor frame, and heat exchanger corrosion and refrigerant leakage to be more effectively prevented.
- An outdoor unit of a refrigeration apparatus according to a fourth aspect of the present invention is the outdoor unit of a refrigeration apparatus according to the second or third aspect, wherein a projection is provided to the surface facing opposite the bottom face part of the floor frame.
- According to the present aspect, the lower end of the header manifold is raised by the cap, which allows infiltration of water into the header manifold to be prevented even when condensation accumulates in the floor frame, and heat exchanger corrosion and refrigerant leakage to be further prevented. Furthermore, condensation that has accumulated in the floor frame can be prevented from flowing into the cap and coming into contact with the header manifold.
- An outdoor unit of a refrigeration apparatus according to a fifth aspect of the present invention is the outdoor unit of a refrigeration apparatus according to the fourth aspect, wherein a second drainage structure is provided to the projection.
- According to the present aspect, condensation that has entered into the cap can be guided from the drainage structure of the lower part of the cap to the floor frame, which allows heat exchanger corrosion and refrigerant leakage to be prevented.
- Examples of the drainage structure include an opening, a cutout, and a gutter or the like.
- An outdoor unit of a refrigeration apparatus according to a sixth aspect of the present invention is the outdoor unit of a refrigeration apparatus according to any of the first through fifth aspects, wherein the cap is designed so that there is no gap through which water can enter between the cap and the header manifold.
- According to the present aspect, the lower end of the header manifold does not come into contact with water even when condensation accumulates in the floor frame, which allows heat exchanger corrosion and refrigerant leakage to be more effectively prevented.
- In the outdoor unit of a refrigeration apparatus according to the first aspect of the present invention, having the cap placed on the lower end of the header manifold and the opening part for draining water provided to the cap makes it possible for dew from the heat exchanger that has entered via a gap between the header manifold and the cap to drain out, and heat exchanger corrosion and refrigerant leakage to be prevented.
- In the outdoor unit of a refrigeration apparatus according to the second aspect of the present invention, having the drainage structure provided to the side face of the cap allows a larger drainage structure to be used, dew from the heat exchanger that has entered via a gap between the header manifold and the cap to be more efficiently drained out, and heat exchanger corrosion and refrigerant leakage to be further prevented.
- In the outdoor unit of a refrigeration apparatus according to the third aspect of the present invention, having the opening provided to the side face of the cap, the bottom face of the opening below the lower end of the header manifold, and the bottom face of the opening set at an incline allows condensation that has entered into the cap to be more efficiently routed outside the cap and guided to the floor frame, and heat exchanger corrosion and refrigerant leakage to be further prevented.
- In the outdoor unit of a refrigeration apparatus according to the fourth aspect of the present invention, because the lower end of the header manifold is raised by the cap, infiltration of water into the header manifold can be prevented even when condensation accumulates in the floor frame, and heat exchanger corrosion and refrigerant leakage can be further prevented. Furthermore, the condensation accumulated in the floor frame can be prevented from flowing into the cap and coming into contact with the header manifold.
- In the outdoor unit of a refrigeration apparatus according to the fifth aspect of the present invention, because condensation that has entered into the cap can be guided from the drainage structure of the lower part of the cap to the floor frame, heat exchanger corrosion and refrigerant leakage can be prevented.
- In the outdoor unit of a refrigeration apparatus according to the sixth aspect of the present invention, because the lower end of the header manifold does not come into contact with water even when condensation accumulates in the floor frame, heat exchanger corrosion and refrigerant leakage can be further prevented.
-
-
FIG. 1 is a general perspective view of an outdoor unit of a refrigeration apparatus according to one embodiment of the present invention. -
FIG. 2 is a general perspective view of an outdoor unit of a refrigeration apparatus according to one embodiment of the present invention in a condition having removed a ceiling plate, a left side plate, a right front plate, and a right rear plate. -
FIG. 3 is a general perspective view of an outdoor heat exchanger. -
FIG. 4 is a front view of a cap according to one embodiment of the present invention. -
FIG. 5 is a plan view of a cap according to one embodiment of the present invention. -
FIG. 6 is a sectional view along VI-VI inFIG. 4 . -
FIG. 7 is a sectional view along VII-VII inFIG. 5 showing a header manifold mounted on the cap. -
FIG. 8 is a front view of a cap in Modified example B. -
FIG. 9 is a plan view of a cap in Modified example C. -
FIG. 10 is a front view of a cap in Modified example C. - An embodiment of the present invention is described below while referring to the drawings.
- The outdoor unit of a refrigeration apparatus of the present embodiment is used as an outdoor unit of an air-conditioning apparatus.
- The outdoor unit of an air-conditioning apparatus according to one embodiment of the present invention is illustrated in
FIG. 1. FIG. 1 is a perspective view illustrating theoutdoor unit 20 of an air-conditioning apparatus. Theoutdoor unit 20 is placed outside a space to be air-conditioned (indoors) where air conditioning is to be performed, and an interior of a roughly rectangular box-form casing 50 is divided into a ventilation compartment and a machine compartment by a partitioning plate (not illustrated) extending vertically. Theoutdoor unit 20 is connected via refrigerant-communicating piping (not illustrated) to an indoor unit (not illustrated) disposed inside the space to be air conditioned. - The
outdoor unit 20 mainly comprises a roughly box-form casing 50, an outdoor fan (not illustrated), refrigerant circuit-configuring parts (not illustrated) including a heat exchanger, a compressor, valves, pipes, and the like, to configure a refrigerant circuit, and an electrical unit (not illustrated) for performing operation and control. - A blow-out opening positioned at the center and to the left of a
front face 51 is formed on thecasing 50, and air sent out by the outdoor fan is blown out forward from the blow-out opening. - The
casing 50 has aceiling plate 57, a rightrear plate 56, and a rightfront plate 55, and additionally has aleft side plate 54 and afloor frame 8. "60" indicates a fan grill attached on the outside of thecasing 50. -
FIG. 2 is an overall perspective view of an outdoor unit of a refrigeration apparatus according to one embodiment of the present invention in a condition having removed a top plate, a left side plate, a right front plate, and a right rear plate. Aheat exchanger 25 is mounted on afloor frame 8, and anoutdoor fan 35 is disposed in front of theheat exchanger 25. The interior is divided by apartitioning plate 58, and as viewed facing the front, the left side is a ventilation compartment and the right side is a machine compartment. - The
outdoor heat exchanger 25 allows refrigerant flowing inside to be condensed or evaporated by heat exchange with outside air. Theoutdoor heat exchanger 25 is made entirely of aluminum or aluminum alloy. Theoutdoor heat exchanger 25 is disposed inside thecasing 50 with a proper space from thecasing 50, or a resin member, or the like, is disposed between theoutdoor heat exchanger 25 and thecasing 50, so as not to be in direct contact with the casing 50 (seeFIG.1 ). - The
outdoor heat exchange 25, as illustrated inFIG. 2 , extends along the back face of thecasing 50 toward the left from near an end part of thepartitioning plate 58, changes in direction at near a left rear corner part of thecasing 50, and extends toward the front along the left side plate 54 (seeFIG. 1 ).
FIG. 3 is a general perspective view of anoutdoor heat exchanger 25. As illustrated inFIG. 3 , theoutdoor heat exchanger 25 has aflat pipe 2,fins 4, andheader manifolds fins 4 are omitted in the illustration inFIG. 3 . Some of the reference numerals of theflat pipes 2 also are omitted. The header manifolds 61, 62 are connected to the both end of theflat pipes 2 which are arranged in multiple rows towards up and down. The header manifolds 61, 62 have functions of supporting theflat pipes 2, guiding refrigerant to an inner channel in the flat pipes 2 (not illustrated), and letting refrigerant coming out of the inner channel collect. Each of alower end header manifolds cap 14 to be described later (seeFIG. 7 ). -
FIGS. 4 through 6 illustrate a front view, a plan view, and a sectional view of acap 14.FIG. 7 illustrates a sectional view showing aheader manifold 6 mounted on thecap 14. - The
cap 14 is made of a rubber material, and has abottom face part 15 and aside face part 16. Thebottom face part 15 is of a cylindrical configuration. The side facepart 16 of the cylindrical configuration stands vertically upright from an edge portion on the circumference of the circle of thebottom face part 15 viewed from above, whereby ahole 19 into which thelower end part 6a of theheader manifold 6 is inserted is formed. Alower end 6b of theheader manifold 6 is inserted so as to contact anupper face 15b of thebottom face part 15, and theheat exchanger 25 is mounted on thecap 14. Thecap 14 is formed from hard rubber (hardness: 50) so that thecap 14 will not come free even if theheat exchanger 25 mounted thereon vibrates. - The
cap 14 has adrainage opening 17 in the side facepart 16. Condensation from theheat exchanger 25 that has traveled along theheader manifold 6 and entered the gap between theheader manifold 6 and thecap 14 is drained out from thedrainage opening 17. Abottom face 17a of thedrainage opening 17 is provided below theupper face 15b of thebottom face part 15. Therefore, condensation from theheat exchanger 25 that has traveled along theheader manifold 6 and entered the gap between theheader manifold 6 and thecap 14 can be more effectively drained. Furthermore, thebottom face 17a is set at a downward incline from the inside toward the outside, and drainage of condensation is further promoted. - A
boss 15a is provided to a surface of thebottom face part 15 facing thefloor frame 8. Accordingly, even when water accumulates in thefloor frame 8, there is minimal likelihood that thelower face part 6a of theheader manifold 6 will be immersed in the water. -
- (3-1) The
outdoor unit 20 of the air-conditioning apparatus 1 according to the present embodiment comprises aheat exchanger 25, afloor frame 8, and acap 14. Theheat exchanger 25 is made of aluminum or aluminum alloy. Theheat exchanger 25 has a plurality offlat pipes 2 arranged facing a side face, aheader manifold 6 to which each of theflat pipes 2 are connected, and a plurality offins 4 joined to theflat pipes 2. In theheat exchanger 25, exchange of heat occurs between a fluid flowing inside theflat pipes 2 and air flowing outside theflat pipes 2. Theheat exchanger 25 is mounted on thefloor frame 8. Thecap 14 covers thelower end part 6a of theheader manifold 6 from below. Thecap 14 has adrainage opening 17 through which water that has entered via a gap between theheader manifold 6 and thecap 14 drains out.
By having the cap placed on the lower end of the header manifold and an opening part for draining water provided to the cap, it is possible for condensation from the heat exchanger that has entered via a gap between the header manifold and the cap to drain out, and heat exchanger corrosion and refrigerant leakage to be prevented. - (3-2) In the
outdoor unit 20 of the air-conditioning apparatus 1 according to the present embodiment, thecap 14 is configured from abottom face part 15 and aside face part 16, and thedrainage opening 17 is provided to theside face 16.
According to this embodiment, having the drainage opening provided to the side face of the cap allows a larger drainage opening to be used, condensation from the heat exchanger that has entered via a gap between the header manifold and the cap to be more efficiently drained out, and heat exchanger corrosion and refrigerant leakage to be more effectively prevented. - (3-3) In the
outdoor unit 20 of the air-conditioning apparatus 1 according to the present embodiment, thebottom face 17a of thedrainage opening 17 is provided below thelower end 6b of theheader manifold 6. Furthermore, thebottom face 17a is set at a downward incline from the inside toward the outside.
According to this embodiment, having the opening provided to the side face of the cap, the bottom face of the opening below the lower end of the header manifold, and the bottom face of the opening set at an incline allows condensation that has entered into the cap to be more efficiently routed outside the cap and guided to the floor frame, and heat exchanger corrosion and refrigerant leakage to be more effectively prevented. - (3-4) In the
outdoor unit 20 of the air-conditioning apparatus 1 according to the present embodiment, aboss 15a is provided to a surface of thebottom face part 15 facing thefloor frame 8.
According to this embodiment, the lower end of the header manifold is raised by the cap, which allows the header manifold to be prevented from being immersed in water even when condensation accumulates in the floor frame, and heat exchanger corrosion and refrigerant leakage to be further prevented. Furthermore, condensation that has accumulated in the floor frame can be prevented from flowing into the cap and coming into contact with the header manifold. - (3-5) In the
outdoor unit 20 of the air-conditioning apparatus 1 according to the present embodiment, thecap 14 is designed to leave substantially no gap through which water can enter between thecap 14 and theheader manifold 6.
According to this embodiment, the lower end of the header manifold does not come into contact with water even when condensation accumulates in the floor frame, which allows heat exchanger corrosion and refrigerant leakage to be more effectively prevented. - A modified example of the present embodiment is presented below. A plurality of modified examples may be appropriately combined.
- Although the
outdoor unit 20 illustrated in the above embodiment is used in an air-conditioning apparatus 1, the outdoor unit is not limited to this and may be used in another refrigeration apparatus. - In the
outdoor unit 20 indicated by the embodiments, a drainage opening 18 (seeFIG. 8 ) may be provided to theboss 15a. - In the
cap 141 of theoutdoor unit 20 indicated by the embodiments, adrainage opening 18 may be provided to the bottom face part 15 (seeFIGS. 9 and10 ). InFIG. 10 ,"71" indicates a pressure-sensitive adhesive, and "72" indicates release paper. In the resulting structure, water more readily drains from the lower part. - According to the present invention as above, susceptibility to an effect of metal corrosion can be suppressed, and this is useful for an outdoor unit of a refrigeration apparatus.
-
- 2
- Flat pipe
- 4
- Fin
- 6, 61, 62
- Header manifold
- 8
- Floor frame
- 14
- Cap
- 17
- Drainage opening
- 20
- Outdoor unit
- 25
- Outdoor heat exchanger (heat exchanger)
- 35
- Outdoor fan
- 50
- Casing
- 51
- Front plate
- 54
- Left side plate
- 55
- Right front plate
- 56
- Right rear plate
- 57
- Ceiling plate
- 58
- Partitioning plate
- 60
- Fan grill
- Patent document 1: Japanese Laid-open Patent Application No.
2011-145029
Claims (6)
- An outdoor unit of a refrigeration apparatus, comprising:a heat exchanger (25) made of aluminum or aluminum alloy, the heat exchanger having a plurality of flat pipes (2) arranged in rows so as to face a side face, header manifolds (61, 62) connected to the both end of the flat pipes (2), and a plurality of fins (4) joined to the flat pipes, and exchange of heat occurring between a fluid flowing inside the flat pipes and air flowing outside the flat pipes;a floor frame (8) on which the heat exchanger is mounted; whereby the header manifolds (61, 62) are arranged vertically, the flat pipes (2) are arranged in multiple rows towards up and down, and the heat exchanger (25) further comprises a cap (14) for covering each of a lower end part (6a) of the header manifolds (61, 62) from below, characterized in that the cap has a first drainage structure (17) through which water that has entered via a gap between the header manifold and the cap drains out.
- The outdoor unit according to claim 1, wherein:the cap is configured to have a bottom face part (15) and a side face part (16), and the first drainage structure is provided to the side face part.
- The outdoor unit according to claim 1 or 2, wherein:the first drainage structure is an opening, a bottom face (17a) of the opening is provided lower than a lower end (6b) of the header manifold, and the bottom face is set at a downward incline from the inside toward the outside.
- The outdoor unit according to claim 2 or 3, wherein:a projection (15a) is provided to a surface of the bottom face part facing opposite the floor frame.
- The outdoor unit according to claim 4, wherein:a second drainage structure (18) is provided to the projection.
- The outdoor unit according to any of claims 1 through 5, wherein:the cap is designed so that there is no gap through which water can enter between the cap and the header manifold.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012022708A JP6024111B2 (en) | 2012-02-06 | 2012-02-06 | Refrigeration unit outdoor unit |
PCT/JP2013/051394 WO2013118583A1 (en) | 2012-02-06 | 2013-01-24 | Outdoor unit for refrigeration device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2813770A1 EP2813770A1 (en) | 2014-12-17 |
EP2813770A4 EP2813770A4 (en) | 2015-01-07 |
EP2813770B1 true EP2813770B1 (en) | 2016-12-07 |
Family
ID=48947350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13746777.5A Active EP2813770B1 (en) | 2012-02-06 | 2013-01-24 | Outdoor unit for refrigeration device |
Country Status (7)
Country | Link |
---|---|
US (1) | US20140374062A1 (en) |
EP (1) | EP2813770B1 (en) |
JP (1) | JP6024111B2 (en) |
KR (1) | KR101656163B1 (en) |
CN (1) | CN104081129B (en) |
AU (1) | AU2013218945B2 (en) |
WO (1) | WO2013118583A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2688480T3 (en) * | 2009-03-19 | 2018-11-02 | Daikin Industries, Ltd. | Air conditioning device |
RU2482402C1 (en) * | 2009-03-19 | 2013-05-20 | Дайкин Индастриз, Лтд. | Conditioner |
WO2010106815A1 (en) * | 2009-03-19 | 2010-09-23 | ダイキン工業株式会社 | Air conditioner |
JP5647396B2 (en) * | 2009-03-19 | 2014-12-24 | ダイキン工業株式会社 | Air conditioner |
CN206905148U (en) * | 2015-08-25 | 2018-01-19 | 三菱电机株式会社 | The outdoor unit of air conditioner |
Family Cites Families (18)
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US2298895A (en) * | 1942-02-28 | 1942-10-13 | Gen Electric | Method of making heat exchange units |
JPH04309794A (en) * | 1991-04-04 | 1992-11-02 | Kubota Corp | Heat exchanger |
US5071027A (en) * | 1991-04-05 | 1991-12-10 | Sullivan John T | Convector tray for a fan coil unit |
JPH0622018U (en) * | 1992-08-27 | 1994-03-22 | サンデン株式会社 | Bracket structure of heat exchanger |
JPH0655420U (en) * | 1993-01-19 | 1994-08-02 | 昌 麟 劉 | Telescopic waterproof tube for umbrella |
JP3156565B2 (en) * | 1995-10-31 | 2001-04-16 | 株式会社デンソー | Heat exchanger |
US5791156A (en) * | 1997-01-06 | 1998-08-11 | Strautman; Thomas J. | Condensate drain pan for roof mounted vehicle air conditioning unit |
JP3912836B2 (en) * | 1997-02-21 | 2007-05-09 | サンデン株式会社 | Heat exchanger |
JPH10252621A (en) * | 1997-03-07 | 1998-09-22 | Mitsuba Corp | Draining structure of starter for engine |
JP2000055412A (en) | 1998-08-17 | 2000-02-25 | Mitsubishi Electric Corp | Outdoor unit for air conditioner |
JP4089077B2 (en) * | 1999-03-30 | 2008-05-21 | 株式会社デンソー | Heat exchanger |
KR100525395B1 (en) * | 2002-12-18 | 2005-11-02 | 엘지전자 주식회사 | air conditioner with ventilating room |
US7669641B2 (en) * | 2006-01-20 | 2010-03-02 | Carrier Corporation | Method and system for vertical coil condensate disposal |
US20080047289A1 (en) * | 2006-08-25 | 2008-02-28 | Patrick Michael G | Air conditioning unit support pan |
US20080087035A1 (en) * | 2006-10-17 | 2008-04-17 | Halla Climate Control Corporation | Condensed water drain structure |
KR101543635B1 (en) * | 2009-03-04 | 2015-08-11 | 한온시스템 주식회사 | A Heat Exchanger with Improved drainage efficiency |
JP2011145029A (en) * | 2010-01-18 | 2011-07-28 | Sharp Corp | Air conditioner |
JP5772590B2 (en) * | 2011-12-28 | 2015-09-02 | ダイキン工業株式会社 | Refrigeration unit outdoor unit |
-
2012
- 2012-02-06 JP JP2012022708A patent/JP6024111B2/en active Active
-
2013
- 2013-01-24 AU AU2013218945A patent/AU2013218945B2/en active Active
- 2013-01-24 US US14/376,109 patent/US20140374062A1/en not_active Abandoned
- 2013-01-24 EP EP13746777.5A patent/EP2813770B1/en active Active
- 2013-01-24 CN CN201380007067.1A patent/CN104081129B/en active Active
- 2013-01-24 WO PCT/JP2013/051394 patent/WO2013118583A1/en active Application Filing
- 2013-01-24 KR KR1020147024748A patent/KR101656163B1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
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AU2013218945B2 (en) | 2015-11-26 |
KR20140131349A (en) | 2014-11-12 |
AU2013218945A1 (en) | 2014-09-18 |
JP6024111B2 (en) | 2016-11-09 |
JP2013160444A (en) | 2013-08-19 |
CN104081129A (en) | 2014-10-01 |
EP2813770A4 (en) | 2015-01-07 |
EP2813770A1 (en) | 2014-12-17 |
US20140374062A1 (en) | 2014-12-25 |
WO2013118583A1 (en) | 2013-08-15 |
KR101656163B1 (en) | 2016-09-08 |
CN104081129B (en) | 2017-05-31 |
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