WO2011099061A1 - 蓄熱装置及び該蓄熱装置を備えた空気調和機 - Google Patents
蓄熱装置及び該蓄熱装置を備えた空気調和機 Download PDFInfo
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- WO2011099061A1 WO2011099061A1 PCT/JP2010/000821 JP2010000821W WO2011099061A1 WO 2011099061 A1 WO2011099061 A1 WO 2011099061A1 JP 2010000821 W JP2010000821 W JP 2010000821W WO 2011099061 A1 WO2011099061 A1 WO 2011099061A1
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- Prior art keywords
- heat storage
- compressor
- storage tank
- heat
- storage device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
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- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/24—Storage receiver heat
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- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
- F28D2020/0078—Heat exchanger arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Definitions
- the present invention relates to a heat storage device that houses a heat storage material that is arranged so as to surround a compressor and stores heat generated by the compressor, and an air conditioner including the heat storage device.
- FIG. 12 is a longitudinal sectional view showing an example of a conventional heat storage device.
- the heat storage device 100 is fixed to the outer peripheral surface of the partition wall 104 of the compressor 102.
- the heat storage device 100 includes a metal member 106 such as an aluminum foil plate or a copper plate, and the metal member 106 is wound so as to contact the outer peripheral surface of the partition wall 104.
- a heat storage material 108 that stores heat generated by the compressor 102 via the partition wall 104 is accommodated, and the heat storage material 108 includes a housing member 110 having a U-shaped longitudinal section. A space formed by the metal member 106 described above is filled. In this space part, the heat storage material 108 and the heating pipe 112 for heating the inflowing refrigerant are disposed.
- the metal member 106 is wound so as to contact the partition wall 104 of the compressor 102, but during the operation of the compressor 102, the temperature of the partition wall 104. Increases to a considerably high temperature (for example, 100 ° C. or higher), and the heat storage material 108 also becomes high temperature.
- a considerably high temperature for example, 100 ° C. or higher
- the heat storage material 108 boils, and furthermore, there is a problem that the heat storage material 108 deteriorates. Note that the boiling of the heat storage material 108 causes rapid evaporation of the heat storage material 108.
- the present invention has been made in view of such problems of the prior art.
- a heat storage device capable of preventing boiling and deterioration of a heat storage material that accumulates heat generated by a compressor, and the heat storage device are provided. It aims at providing the used air conditioner.
- the present invention is a heat storage device arranged so as to surround a compressor, which contains a heat storage material that accumulates heat generated by the compressor, and is more contractible than the compressor material.
- a heat storage tank having a main body formed of a high material and a heat storage heat exchanger accommodated in the heat storage tank main body.
- the temperature of the heat storage tank arranged so as to surround the circumference also rises.
- the heat storage tank is made of a material having higher contractibility than the compressor, when the temperature of the heat storage tank rises, the heat storage tank expands, and the portion of the heat storage tank facing the compressor is separated from the compressor.
- an air layer is formed between the compressor and the heat storage tank. Since this air layer acts as a heat insulating material, when the compressor becomes excessively high in temperature, it becomes difficult for heat generated in the compressor to be transferred to the heat storage material in the heat storage tank. Thereby, boiling and deterioration of the heat storage material can be prevented.
- the heat storage tank contracts, so that the heat storage tank is in close contact with the compressor, and the heat generated by the compressor can be transmitted well to the heat storage material.
- coolant of the air conditioner of FIG. The schematic diagram which shows the operation
- the perspective view of the heat storage apparatus which concerns on this invention of the state which attached the compressor and the accumulator 4 is an exploded perspective view of the heat storage device of FIG.
- Sectional drawing along line VII-VII in Drawing 6 (d) 4 is an enlarged cross-sectional view when the sheet member provided in the heat storage device of FIG. 4 has a two-layer laminated structure of a resin layer and a metal layer. 4 is an enlarged cross-sectional view when the sheet member provided in the heat storage device of FIG. 4 has a three-layer laminated structure of a resin layer, a metal layer, and a resin layer.
- the present invention is a heat storage device arranged so as to surround a compressor, and stores a heat storage material that stores heat generated by the compressor, and is formed of a material having a higher contractibility than the material of the compressor. And a heat exchanger for heat storage housed in the heat storage tank main body.
- the degree of adhesion between the heat storage tank and the compressor changes according to the temperature change of the compressor, and the heat transfer performance from the compressor to the heat storage tank is improved at low temperatures, while from the compressor to the heat storage tank at high temperatures. Therefore, the heat storage material can be prevented from boiling and deteriorating.
- the side wall of the heat storage tank body has a self-restoring force in the elastic deformation region.
- the adhesion degree of a compressor and a thermal storage tank can be changed effectively according to the temperature change of a compressor.
- the side wall of the heat storage tank main body has a linear expansion coefficient larger than that of the compressor.
- the heat storage tank is set to be attached to the compressor by providing a gap between the inner peripheral surface of the heat storage tank and the outer peripheral surface of the compressor. Due to the presence of the air gap, when the temperature is low, it can be brought into close contact with the compressor, and when the temperature is high, it can be separated from the compressor.
- the compressor is made of metal and the heat storage tank is made of resin.
- the adhesion degree of a compressor and a thermal storage tank can be changed effectively according to the temperature change of a compressor.
- the side wall of the heat storage tank body has a thickness of 1.0 to 3.0 mm. Therefore, the adhesion degree of a compressor and a thermal storage tank can be changed effectively according to the temperature change of a compressor.
- the lower part of the heat storage tank is fixed while the upper part is not fixed.
- contraction of the upper part of a thermal storage tank with a large temperature change are accept
- the other aspect of this invention is an air conditioner provided with a compressor and the thermal storage apparatus mentioned above arrange
- FIG. 1 shows a configuration of an air conditioner including a heat storage device according to the present invention, and the air conditioner is composed of an outdoor unit 2 and an indoor unit 4 that are connected to each other through a refrigerant pipe.
- a compressor 6, a four-way valve 8, a strainer 10, an expansion valve 12, and an outdoor heat exchanger 14 are provided inside the outdoor unit 2.
- a heat exchanger 16 is provided, and these are connected to each other via a refrigerant pipe to constitute a refrigeration cycle.
- the compressor 6 and the indoor heat exchanger 16 are connected via a first pipe 18 provided with a four-way valve 8, and the indoor heat exchanger 16 and the expansion valve 12 are provided with a strainer 10.
- the second pipe 20 is connected.
- the expansion valve 12 and the outdoor heat exchanger 14 are connected via a third pipe 22, and the outdoor heat exchanger 14 and the compressor 6 are connected via a fourth pipe 24.
- the four-way valve 8 is disposed in the middle of the fourth pipe 24, and an accumulator 26 for separating the liquid-phase refrigerant and the gas-phase refrigerant is provided in the fourth pipe 24 on the refrigerant suction side of the compressor 6. ing.
- the compressor 6 and the third pipe 22 are connected via a fifth pipe 28, and the first solenoid valve 30 is provided in the fifth pipe 28.
- a heat storage tank 32 is provided around the compressor 6, and a heat storage heat exchanger 34 is provided inside the heat storage tank 32, and a heat storage material for exchanging heat with the heat storage heat exchanger 34 (for example, An ethylene glycol aqueous solution) 36 is filled, and the heat storage tank 32, the heat storage heat exchanger 34, and the heat storage material 36 constitute a heat storage device.
- a heat storage material for exchanging heat with the heat storage heat exchanger 34 for example, An ethylene glycol aqueous solution
- the second pipe 20 and the heat storage heat exchanger 34 are connected via a sixth pipe 38, the heat storage heat exchanger 34 and the fourth pipe 24 are connected via a seventh pipe 40, and the sixth pipe 38. Is provided with a second electromagnetic valve 42.
- an air blower fan (not shown), upper and lower blades (not shown), and left and right blades (not shown) are provided inside the indoor unit 4, and indoor heat exchange is performed.
- the unit 16 exchanges heat between the indoor air sucked into the interior of the indoor unit 4 by the blower fan and the refrigerant flowing through the interior of the indoor heat exchanger 16, and blows out the air heated by heat exchange into the room during heating.
- air cooled by heat exchange is blown into the room during cooling.
- the upper and lower blades change the direction of air blown from the indoor unit 4 up and down as necessary, and the left and right blades change the direction of air blown from the indoor unit 4 to right and left as needed.
- the compressor 6, the blower fan, the upper and lower blades, the left and right blades, the four-way valve 8, the expansion valve 12, the electromagnetic valves 30 and 42, etc. are electrically connected to a control device (not shown, for example, a microcomputer). Be controlled.
- the refrigerant discharged from the discharge port of the compressor 6 passes from the four-way valve 8 to the indoor heat exchanger 16 through the first pipe 18.
- the refrigerant condensed by exchanging heat with the indoor air in the indoor heat exchanger 16 passes through the second pipe 20 through the indoor heat exchanger 16, expands through the strainer 10 that prevents foreign matter from entering the expansion valve 12.
- To valve 12. The refrigerant decompressed by the expansion valve 12 reaches the outdoor heat exchanger 14 through the third pipe 22, and the refrigerant evaporated by exchanging heat with the outdoor air in the outdoor heat exchanger 14 is the fourth pipe 24 and the four-way valve 8. And returns to the suction port of the compressor 6 through the accumulator 26.
- the fifth pipe 28 branched from the compressor 6 discharge port of the first pipe 18 and the four-way valve 8 is connected to the expansion valve 12 of the third pipe 22 and the outdoor heat exchanger 14 via the first electromagnetic valve 30. I am joining in between.
- the heat storage tank 32 in which the heat storage material 36 and the heat storage heat exchanger 34 are housed is disposed so as to be in contact with and surround the compressor 6, and the heat generated in the compressor 6 is accumulated in the heat storage material 36, and the second The sixth pipe 38 branched from the pipe 20 between the indoor heat exchanger 16 and the strainer 10 reaches the inlet of the heat storage heat exchanger 34 via the second electromagnetic valve 42 and exits from the outlet of the heat storage heat exchanger 34.
- the seventh pipe 40 joins between the four-way valve 8 and the accumulator 26 in the fourth pipe 24.
- FIG. 2 schematically showing the operation during normal heating and the flow of the refrigerant of the air conditioner shown in FIG.
- the first electromagnetic valve 30 and the second electromagnetic valve 42 are controlled to be closed, and the refrigerant discharged from the discharge port of the compressor 6 as described above passes through the first pipe 18 and the four-way valve 8.
- the indoor heat exchanger 16 The refrigerant condensed by exchanging heat with the indoor air in the indoor heat exchanger 16 exits the indoor heat exchanger 16, passes through the second pipe 20, reaches the expansion valve 12, and the refrigerant decompressed by the expansion valve 12 is the third refrigerant. It reaches the outdoor heat exchanger 14 through the pipe 22.
- the refrigerant evaporated by exchanging heat with outdoor air in the outdoor heat exchanger 14 returns from the four-way valve 8 to the suction port of the compressor 6 through the fourth pipe 24.
- the heat generated in the compressor 6 is accumulated in the heat storage material 36 housed in the heat storage tank 32 from the outer wall of the compressor 6 through the outer wall of the heat storage tank 32.
- FIG. 3 schematically showing the operation of the air conditioner shown in FIG. 1 during defrosting / heating and the flow of refrigerant.
- the solid line arrows indicate the flow of the refrigerant used for heating
- the broken line arrows indicate the flow of the refrigerant used for defrosting.
- the air conditioner according to the present invention is provided with a temperature sensor 44 that detects the piping temperature of the outdoor heat exchanger 14, and the evaporation temperature is lower than that during non-frosting. When this is detected by the temperature sensor 44, an instruction from the normal heating operation to the defrosting / heating operation is output from the control device.
- the first electromagnetic valve 30 and the second electromagnetic valve 42 are controlled to open, and in addition to the refrigerant flow during the normal heating operation described above, the first solenoid valve 30 and the second electromagnetic valve 42 are discharged from the discharge port of the compressor 6. After a part of the vapor-phase refrigerant passes through the fifth pipe 28 and the first electromagnetic valve 30 and merges with the refrigerant passing through the third pipe 22, the outdoor heat exchanger 14 is heated, condensed, and converted into a liquid phase. Through the fourth pipe 24, the four-way valve 8 and the accumulator 26 are returned to the suction port of the compressor 6.
- a part of the liquid-phase refrigerant that is divided between the indoor heat exchanger 16 and the strainer 10 in the second pipe 20 passes through the sixth pipe 38 and the second electromagnetic valve 42, and then is stored in the heat storage material 36 in the heat storage heat exchanger 34. From the accumulator 26 and returns to the suction port of the compressor 6 through the seventh pipe 40 and the refrigerant that passes through the fourth pipe 24.
- the refrigerant returning to the accumulator 26 includes the liquid phase refrigerant returning from the outdoor heat exchanger 14. By mixing this with the high-temperature gas phase refrigerant returning from the heat storage heat exchanger 34, The evaporation of the phase refrigerant is promoted, and the liquid phase refrigerant does not return to the compressor 6 through the accumulator 26, so that the reliability of the compressor 6 can be improved.
- the temperature of the outdoor heat exchanger 14 that has become below freezing due to the attachment of frost at the start of defrosting and heating is heated by the gas-phase refrigerant discharged from the discharge port of the compressor 6, and the frost is melted near zero, When melting is finished, the temperature of the outdoor heat exchanger 14 begins to rise again.
- the temperature sensor 44 detects the temperature rise of the outdoor heat exchanger 14, it is determined that the defrosting has been completed, and the control device outputs an instruction from the defrosting / heating operation to the normal heating operation.
- FIG. 4 to 7 show a heat storage device, and the heat storage device includes the heat storage tank 32, the heat storage heat exchanger 34, and the heat storage material 36 as described above.
- FIG. 4 shows a state where the compressor 6 and the accumulator 26 assembled to the compressor 6 are attached to the heat storage device.
- 5 is an exploded perspective view of the heat storage device
- FIG. 6 shows an assembly procedure of the heat storage device
- FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.
- the heat storage tank 32 includes a resin heat storage tank main body 46 having a side wall 46 a and a bottom wall (not shown) and opened upward, and an upper opening of the heat storage tank main body 46.
- a lid 48 made of resin that closes the portion and a packing 50 that is interposed between the heat storage tank main body 46 and the lid 48 and made of silicon rubber or the like.
- the lid 48 is screwed to the heat storage tank main body 46. Is done.
- a part of the side wall 46a of the heat storage tank main body 46 that is, a part facing the compressor 6 at the side wall 46a
- the peripheral edge of the opening 46b is in close contact with the outer peripheral surface of the compressor 6.
- the close contact member 52 is joined.
- the contact member 52 includes a frame body 54 and a sheet member 56, and has a shape in which a part of a cylinder having a predetermined diameter is cut out as a whole. Since the compressor 6 is accommodated inside the contact member 52, the inner diameter of the contact member 52 is set slightly larger than the outer diameter of the compressor 6 in consideration of mounting tolerances and the like.
- an opening 54a is formed in the frame 54 from the middle part in the vertical direction to the lower part, and the sheet member 56 is joined to the frame 54 so as to close the opening 54a.
- the heat storage heat exchanger 34 is, for example, a copper tube or the like bent in a serpentine shape, and is housed inside the heat storage tank body 46, and both ends of the heat storage heat exchanger 34 are extended upward from the lid body 48. One end is connected to the sixth pipe 38 (see FIG. 1), while the other end is connected to the seventh pipe 40 (see FIG. 1).
- the heat storage heat exchanger 34 is accommodated, and the heat storage material 36 is filled in the internal space of the heat storage tank main body 46 surrounded by the side wall 46 a, the bottom wall, and the contact member 52.
- the heat storage tank body 46, the lid body 48, the heat storage heat exchanger 34, the frame body 54, the sheet member 56, etc. are first formed into a predetermined shape. Then, as shown in FIG. 6B, the sheet member 56 is joined so as to close the opening 54 a of the frame body 54 to form the contact member 52. Next, as shown in FIG. 6C, the contact member 52 is joined so as to close the opening 46b of the heat storage tank body 46, and as shown in FIG.
- the heat storage material 36 is filled into the heat storage tank 32 by screwing to the tank body 46, the heat storage device is completed.
- the heat storage heat exchanger 34 is omitted in FIG. 6, the heat storage heat exchanger 34 is attached to the lid body 48 before the lid body 48 is screwed to the heat storage tank body 46, and the inside of the heat storage tank 32. Is housed in.
- the heat storage device accumulates the heat generated in the compressor 6 during the heating operation in the heat storage material 36, and exchanges the indoor heat in the second pipe 20 when the normal heating operation is shifted to the defrosting / heating operation.
- Part of the liquid-phase refrigerant that was split between the storage device 16 and the strainer 10 is for absorbing heat from the heat storage material 36 by the heat storage heat exchanger 34 and evaporating and vaporizing it, and thus generated in the compressor 6. The higher the heat absorption efficiency, the better.
- the heat absorption efficiency depends on the degree of adhesion between the heat storage tank body 46 and the compressor 6, but the compressor 6 is made of metal and has an uneven surface, and the heat storage tank body 46 and the compressor 6 are in close contact. It is not easy to improve the degree.
- the heat storage tank body 46 is provided with the flexible close contact member 52, and when the heat storage tank 32 is filled with the heat storage material 36, the sheet member 56 is caused by the hydraulic pressure of the heat storage material 36. As the sheet member 56 comes into close contact with the outer peripheral surface of the compressor 6, the endothermic efficiency is improved.
- the sheet member 56 is excellent in heat resistance, and preferably has a higher flexibility than the heat storage tank body 46 and is easily deformed.
- the sheet member 56 is made of a material such as PET (polyethylene terephthalate) or PPS (polyphenylene sulfide). It is a structure that can be deformed according to the hydraulic pressure (particularly depending on the wall thickness and has no self-restoring force).
- the frame 54 is preferably made of the same material as the sheet member 56 in consideration of the bonding with the sheet member 56, but any heat-resistant resin can be adopted as long as the bonding strength with the sheet member 56 is sufficient. it can.
- the sheet member 56 may have a single layer structure of resin, but in consideration of thermal conductivity, strength, etc., the sheet member 56 may have a laminated structure in which a metal layer is laminated on a resin layer.
- the metal layer 58 is disposed on the outer side (surface facing the compressor 6), and the resin layer 60 is disposed on the inner side (contact surface with the heat storage material 36).
- the metal layer 58 is disposed on the compressor 6 side is to prevent the sheet member 56 from being damaged by unevenness on the surface of the compressor 6, for example.
- a second resin layer 62 that is in close contact with the compressor 6 may be laminated on the metal layer 58, and in this case, the resin layer 60 that is in contact with the heat storage material 36 is provided in the second layer. It is preferable to set it thicker than the resin layer 62. This is because penetration of the heat storage material 36 into the metal layer 58 in the resin can be prevented.
- the compressor 6 considering the material (metal) of the compressor 6 as the material of the heat storage tank main body 46, by selecting a material (resin) having a higher contractibility than the material of the compressor 6, the compressor 6 is cold and the heat storage material 36 is cooled. When it is cold, the heat generated by the compressor 6 is quickly stored in the heat storage material 36. On the other hand, when the heat storage material 36 reaches a predetermined temperature (for example, 100 ° C.), the heat storage material 36 is used from the viewpoint of preventing deterioration of the heat storage material 36. The heat is not stored further.
- a predetermined temperature for example, 100 ° C.
- the diameter of the inner wall of the heat storage tank body 46 is set to a value (for example, about 2 mm) slightly larger than the outer diameter of the compressor 6.
- a value for example, about 2 mm
- the heat storage tank main body 46 is externally attached to the compressor 6 from above, and the heat storage tank main body 46 is loosely fixed to the compressor 6 by a band 64 (see FIG. 4).
- a gap of about 1 mm is formed between the inner peripheral surface of the heat storage tank main body 46 and the outer peripheral surface of the compressor 6 at a low temperature.
- This air gap is an air layer and acts as a heat insulating material.
- the sheet member 56 swells and comes into close contact with the outer peripheral surface of the compressor 6 due to the hydraulic pressure of the heat storage material 36, so And the gap between the outer peripheral surface of the compressor 6 is eliminated.
- heating operation normal heating
- the temperature of the outer wall surface of the compressor 6 reaches about 100 ° C.
- the temperature of the heat storage tank 32 rises, It expands in the direction of the arrow shown in FIG.
- the compressor 6 also expands due to a temperature rise, since a material having higher contractibility than the material of the compressor 6 is selected as the material of the heat storage tank body 46, the outer peripheral surface of the compressor 6 and the inner wall of the heat storage tank body 46 are selected. The gap between them can be increased.
- this gap acts as a heat insulating material, when the compressor 6 reaches a high temperature, the heat from the compressor 6 becomes difficult to be transmitted to the heat storage material 36, and water boiling of the heat storage material 36 can be prevented. As a result, deterioration of the heat storage material 36 can be prevented.
- the heat storage tank 32 contracts.
- the gap between the outer peripheral surface of the compressor 6 and the inner peripheral surface of the heat storage tank main body 46 becomes small, and the inner peripheral surface of the heat storage tank main body 46 comes close to the outer peripheral surface of the compressor 6.
- the adhesion of the sheet member 56 to the outer peripheral surface of the machine 6 is improved, and the heat generated by the compressor 6 can be transferred to the heat storage material 36 satisfactorily.
- the temperature of the heat storage material 36 housed in the heat storage tank 32 changes according to the vertical position of the heat storage material 36 in the heat storage tank 32, and the lower the vertical position, the lower the temperature and the vertical position. The higher the temperature, the higher the temperature. Therefore, the expansion / contraction of the heat storage tank 32 increases as the height increases.
- the heat storage tank 32 is a bottom plate (not shown) of the indoor unit via a plurality (for example, three) of attachment pieces 66 formed on the bottom wall.
- the heat is efficiently transferred from the compressor 6 to the heat storage material 36 by fixing (constraining) only the lower part of the heat storage tank 32 and not fixing (not restricting) the upper part. ing. More specifically, by not constraining the upper end portion of the heat storage tank 32 that is at a high temperature, the high temperature portion of the heat storage tank 32 is separated from the compressor 6 at a high temperature, and the heat storage tank 32 is in close contact with the compressor 6 at a low temperature. This makes it possible to accelerate heat storage.
- the side wall of the heat storage tank body 46 is preferably made of the following materials in consideration of its expansion / contraction, and the wall thickness is preferably in the range of 1.0 to 3.0 mm. This is because there is a self-restoring force in the elastic deformation region (it can be deformed according to temperature changes). -A material with higher shrinkage than the material of the compressor 6-Self-restoring force in the elastic deformation region (deformable according to temperature change) A material having a linear expansion coefficient larger than that of the compressor 6
- a resin such as PPS (polyphenylene sulfide), PBT (polybutylene terephthalate), PS (polystyrene), PP (polypropylene), or the like can be employed as a material for the side wall of the heat storage tank main body 46.
- PPS polyphenylene sulfide
- PBT polybutylene terephthalate
- PS polystyrene
- PP polypropylene
- Linear expansion coefficient of PPS 23 to 32 ⁇ 10 ⁇ 6 / K ⁇
- Linear expansion coefficient of PBT about 94 ⁇ 10 ⁇ 6 / K PS linear expansion coefficient: about 70 ⁇ 10 ⁇ 6 / K PP linear expansion coefficient: about 110 ⁇ 10 ⁇ 6 / K
- linear expansion coefficient of resin since a numerical value changes with grades, fillers, etc., a typical thing is illustrated.
- the present invention is not limited to this configuration, and may be a heat storage tank 32 of a type in which the side wall 46a does not have the opening 46b.
- the heat storage device can prevent deterioration of the heat storage material that accumulates the heat generated by the compressor, it is useful for an air conditioner, a refrigerator, a water heater, a heat pump type washing machine, and the like.
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Abstract
Description
図1は、本発明に係る蓄熱装置を備えた空気調和機の構成を示しており、空気調和機は、冷媒配管で互いに接続された室外機2と室内機4とで構成されている。
上述したように、蓄熱装置は、暖房運転時に圧縮機6で発生した熱を蓄熱材36に蓄積し、通常暖房運転から除霜・暖房運転に移行したときに、第2配管20における室内熱交換器16とストレーナ10の間で分流した液相冷媒の一部が、蓄熱熱交換器34で蓄熱材36から吸熱し蒸発、気相化するためのものであることから、圧縮機6で発生した熱の吸熱効率は高いほど好ましい。
・圧縮機6の材質よりも収縮性が高い材質
・弾性変形領域で自己復元力がある(温度変化に応じて変形自在)
・圧縮機6の線膨張係数より大きな線膨張係数を有する材料
・PPSの線膨張係数:23~32×10-6/K
・PBTの線膨張係数:約94×10-6/K
・PSの線膨張係数:約70×10-6/K
・PPの線膨張係数:約110×10-6/K
なお、樹脂の線膨張係数に関しては、グレードやフィラー等でかなり数値が変動するため、代表的なものを例示している。
10 ストレーナ、 12 膨張弁、 14 室外熱交換器、
16 室内熱交換器、 18 第1配管、 20 第2配管、
22 第3配管、 24 第4配管、 26 アキュームレータ、
28 第5配管、 30 第1電磁弁、 32 蓄熱槽、
34 蓄熱熱交換器、 36 蓄熱材、 38 第6配管、
40 第7配管、 42 第2電磁弁、 44 温度センサ、
46 蓄熱槽本体、 46a 側壁、 46b 側壁開口部、
48 蓋体、 50 パッキン、 52 密着部材、 54 枠体、
54a 開口部、 56 シート部材、 58 金属層、
60 樹脂層、 62 第2の樹脂層、 64 バンド、 66 取付片。
Claims (8)
- 圧縮機を囲むように配置された蓄熱装置であって、
前記圧縮機で発生した熱を蓄積する蓄熱材を収容し、前記圧縮機の材質よりも収縮性が高い材質で形成された本体を有する蓄熱槽と、前記蓄熱槽本体に収容された蓄熱用熱交換器と、を備えることを特徴とする蓄熱装置。 - 前記蓄熱槽本体の側壁は、弾性変形領域で自己復元力があることを特徴とする請求項1に記載の蓄熱装置。
- 前記蓄熱槽本体の側壁は、前記圧縮機の線膨張係数より大きい線膨張係数を有することを特徴とする請求項1に記載の蓄熱装置。
- 前記蓄熱槽の内周面と前記圧縮機の外周面との間に空隙を持たせて、前記蓄熱槽は前記圧縮機に取り付けられることを特徴とする請求項1に記載の蓄熱装置。
- 前記圧縮機の材質は金属であり、前記蓄熱槽の材質は樹脂であることを特徴とする請求項1に記載の蓄熱装置。
- 前記蓄熱槽本体の側壁は、1.0~3.0mmの肉厚を持つことを特徴とする請求項1に記載の蓄熱装置。
- 前記蓄熱槽は、その下部が固定される一方、その上部が固定されないことを特徴とする請求項1に記載の蓄熱装置。
- 圧縮機と、該圧縮機を囲むように配置された請求項1に記載の蓄熱装置と、を備えることを特徴とする空気調和機。
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EP10845667.4A EP2535665B1 (en) | 2010-02-10 | 2010-02-10 | Air-conditioner provided with a heat storage device |
PCT/JP2010/000821 WO2011099061A1 (ja) | 2010-02-10 | 2010-02-10 | 蓄熱装置及び該蓄熱装置を備えた空気調和機 |
CN201080063603.6A CN102753911B (zh) | 2010-02-10 | 2010-02-10 | 蓄热装置和具有该蓄热装置的空气调节机 |
BR112012020093A BR112012020093A2 (pt) | 2010-02-10 | 2010-02-10 | dispositivo de armazenamento de calor e condicionador de ar tendo o mesmo |
KR1020127020934A KR20120125288A (ko) | 2010-02-10 | 2010-02-10 | 축열 장치 및 상기 축열 장치를 구비한 공기 조화기 |
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PCT/JP2010/000821 WO2011099061A1 (ja) | 2010-02-10 | 2010-02-10 | 蓄熱装置及び該蓄熱装置を備えた空気調和機 |
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EP (1) | EP2535665B1 (ja) |
KR (1) | KR20120125288A (ja) |
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Cited By (1)
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CN103542754A (zh) * | 2012-07-12 | 2014-01-29 | 珠海格力电器股份有限公司 | 空调器及其蓄热器 |
Families Citing this family (7)
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CN102878736A (zh) * | 2012-10-29 | 2013-01-16 | 姜益强 | 空气源热泵连续供热除霜系统 |
CN103851943A (zh) * | 2012-12-05 | 2014-06-11 | 珠海格力电器股份有限公司 | 蓄热器及具有该蓄热器的空调器 |
CN104214848B (zh) * | 2014-08-11 | 2017-12-26 | 珠海格力电器股份有限公司 | 蓄热器及空调室外机 |
CN104296275B (zh) * | 2014-08-22 | 2017-02-08 | 深圳朴方环保发展有限公司 | 一种缩小昼夜温差的装置 |
JP6570269B2 (ja) * | 2014-10-28 | 2019-09-04 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 蓄熱装置及びこれを用いた空気調和機 |
WO2016068601A1 (ko) * | 2014-10-28 | 2016-05-06 | 삼성전자주식회사 | 축열 장치 및 이를 갖는 공기 조화기 |
GB2605588B (en) * | 2021-04-02 | 2023-07-26 | William Yemm Richard | Thermal energy storage |
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JPH0765782B2 (ja) * | 1989-11-17 | 1995-07-19 | 松下電器産業株式会社 | 蓄熱槽 |
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2010
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- 2010-02-10 CN CN201080063603.6A patent/CN102753911B/zh active Active
- 2010-02-10 KR KR1020127020934A patent/KR20120125288A/ko not_active Application Discontinuation
- 2010-02-10 EP EP10845667.4A patent/EP2535665B1/en active Active
- 2010-02-10 BR BR112012020093A patent/BR112012020093A2/pt not_active Application Discontinuation
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JPS60148569U (ja) * | 1984-03-14 | 1985-10-02 | 三菱重工業株式会社 | 空気調和機 |
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JP2705734B2 (ja) | 1991-02-08 | 1998-01-28 | シャープ株式会社 | 圧縮機 |
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CN103542754A (zh) * | 2012-07-12 | 2014-01-29 | 珠海格力电器股份有限公司 | 空调器及其蓄热器 |
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EP2535665A4 (en) | 2014-05-21 |
KR20120125288A (ko) | 2012-11-14 |
CN102753911A (zh) | 2012-10-24 |
EP2535665A1 (en) | 2012-12-19 |
BR112012020093A2 (pt) | 2016-05-17 |
CN102753911B (zh) | 2015-02-18 |
EP2535665B1 (en) | 2020-04-01 |
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