WO2010013504A1 - ヒートポンプ給湯機 - Google Patents

ヒートポンプ給湯機 Download PDF

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Publication number
WO2010013504A1
WO2010013504A1 PCT/JP2009/052736 JP2009052736W WO2010013504A1 WO 2010013504 A1 WO2010013504 A1 WO 2010013504A1 JP 2009052736 W JP2009052736 W JP 2009052736W WO 2010013504 A1 WO2010013504 A1 WO 2010013504A1
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WO
WIPO (PCT)
Prior art keywords
heat
water
refrigerant
heat exchange
heat exchanger
Prior art date
Application number
PCT/JP2009/052736
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
正則 小曽戸
徹 村石
和生 居山
Original Assignee
日立アプライアンス株式会社
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 日立アプライアンス株式会社 filed Critical 日立アプライアンス株式会社
Priority to KR1020117002246A priority Critical patent/KR101346444B1/ko
Priority to CN200980129588.8A priority patent/CN102105753B/zh
Publication of WO2010013504A1 publication Critical patent/WO2010013504A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • F24D15/04—Other domestic- or space-heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/136—Defrosting or de-icing; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/16—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
    • F24H15/164—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources where the price of the electric supply changes with time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/269—Time, e.g. hour or date
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/38—Control of compressors of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/385—Control of expansion valves of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump

Definitions

  • the present invention relates to an improvement in the efficiency of a heat pump water heater, and more particularly to a heat pump water heater that can reduce heat dissipation loss.
  • a hot water storage tank is enclosed by an outer case, vacuum insulation is disposed in the upper space between the hot water storage tank and the outer case, and sheet-like heat insulating material is disposed in the lower space. Therefore, there has been proposed one that reduces the amount of vacuum insulation used and improves the balance between manufacturing cost and performance effect.
  • heat pumps are operated using discounted electricity charges at night, and the water is heated and stored in hot water storage tanks as high-temperature water. During the day, depending on the use (opening the faucet), Such a heat pump water heater is suitable because it is common to mix hot water and supply hot water as appropriate temperature water.
  • Japanese Patent Application Laid-Open No. 2007-192440 proposes a method for reducing the thickness of a heat insulating material by covering the compressor with a composite heat insulating material composed of a vacuum heat insulating material, a sound absorbing heat insulating material and a vibration insulating heat insulating material. Yes.
  • the conventional heat pump water heater shown in Japanese Patent Application Laid-Open No. 2007-155274 is effective as a heat insulation effect for a hot water storage tank, but uses many parts such as an outer case, a vacuum heat insulating material, and a sheet-shaped heat insulating material. Compared to conventional foam insulation, there was a problem that the parts purchase cost and installation work cost increased.
  • an overload protection device is provided. May be activated.
  • an object of the present invention is to provide a heat pump water heater that can effectively improve the efficiency.
  • the present invention paid attention to a water-refrigerant heat exchanger which is a large heat radiation source among the elements constituting the heat pump water heater as a means for solving the problems of the conventional heat pump water heater.
  • the heat pump water heater according to the present invention includes a water refrigerant heat exchanger configured to exchange heat between the refrigerant compressed by the compressor and water, and surrounds the water refrigerant heat exchanger. It is characterized by arranging a vacuum heat insulating material.
  • the present invention can reduce heat dissipation loss of a water-refrigerant heat exchanger, which is a large heat dissipation source, and can effectively improve efficiency.
  • FIG. 1 shows a heat pump water heater according to the first embodiment.
  • the heat pump water heater includes a heat pump unit 30 that houses components of the heat pump refrigerant circuit, a hot water storage unit 40 that houses the hot water storage tank 9 and hot water supply circuit components, and an operation control means 50.
  • the heat pump refrigerant circuit is configured by sequentially connecting the refrigerant side heat transfer tubes 2a and 2b, the pressure reducing device 3, and the air heat exchanger 4 arranged in the compressor 1, the water refrigerant heat exchanger 2 through refrigerant pipes, respectively.
  • a carbon dioxide (CO 2 ) refrigerant is enclosed therein.
  • the compressor 1 can perform rotational speed control from low speed (for example, 700 rotations / minute) to high speed (for example, 7000 rotations / minute) by PWM control, voltage control (for example, PAM control) and combination control thereof.
  • the water refrigerant heat exchanger 2 includes refrigerant side heat transfer tubes 2a and 2b and water supply side heat transfer tubes 2c and 2d, and performs heat exchange between the refrigerant side heat transfer tubes 2a and 2b and the water supply side heat transfer tubes 2c and 2d. It is configured as follows.
  • the water-refrigerant heat exchanger 2 includes a heat exchange member group 2e (see FIG. 3) including a refrigerant-side heat transfer tube 2a and a water supply-side heat transfer tube 2c, and a refrigerant-side heat transfer tube 2b and a water supply-side heat transfer tube.
  • the heat exchange member group 2f made of 2d (see FIG. 3) is composed of two paths.
  • the decompression device 3 As the decompression device 3, an electric expansion valve is generally used, and the medium temperature and high pressure refrigerant sent through the water refrigerant heat exchanger 2 is decompressed and sent to the air heat exchanger 4 as a low pressure refrigerant that easily evaporates. Further, the decompression device 3 functions to adjust the refrigerant circulation amount in the heat pump refrigerant circuit by changing the throttle amount of the refrigerant circuit, or when the air heat exchanger 4 is frosted (frost is attached) by operating the heat pump at low temperatures in winter. In addition, the defrosting device that melts frost by fully opening the throttle amount and sending a large amount of medium temperature refrigerant to the air heat exchanger 4 is also performed.
  • the air heat exchanger 4 takes in the outside air by the rotation of the blower fan 5 and exchanges heat between the air and the refrigerant, and absorbs heat from the outside air.
  • the hot water storage unit 40 includes a water circulation circuit for performing hot water storage (hot water storage in the hot water storage tank 9), tank hot water supply (hot water supply from the hot water storage tank 9), and the like.
  • the hot water storage circuit is a water circuit for storing hot water in the hot water storage tank 9 by the tank boiling operation.
  • the hot water storage tank 9, the tank circulation pump 14, the water supply side heat transfer pipes 2c and 2d, and the hot water storage tank 9 are sequentially connected through the water pipe. Is configured.
  • the tank hot water supply circuit is constituted by sequentially connecting a water supply fitting 6, a pressure reducing valve 7, a water supply amount sensor 8, a hot water storage tank 9, a hot water mixing valve 11, and a hot water supply fitting 12 via a water pipe.
  • the water supply fitting 6 is connected to a water supply source such as a water supply, and the hot-water supply fitting 12 is connected to a kitchen faucet 13 or the like.
  • hot water supply fitting 12 can also supply hot water to a bathroom or a bath hot water circuit (not shown).
  • the operation control means 50 operates / stops the heat pump refrigerant circuit and controls the rotation speed of the compressor 1, adjusts the refrigerant throttle amount of the decompression device 3, and other refrigeration cycle operation control, hot water / water mixing valve 11 and the like.
  • the hot water supply operation etc. are performed by controlling.
  • the operation control means 50 when storing the hot water at a high temperature (for example, 90 ° C.) at low temperatures in winter, the operation control means 50 has a high rotation speed (for example, 3000 to 4000 rotations / minute) because the ambient temperature and the feed water temperature are low and the heating load is large. On the contrary, in summer, since the heating load is small, an optimum operation control means such as a general hot water storage temperature (about 65 ° C.) and a relatively low speed (for example, 1000 to 2000 rpm) is provided.
  • a general hot water storage temperature about 65 ° C.
  • a relatively low speed for example, 1000 to 2000 rpm
  • the heat pump water heater includes a tank thermistor for detecting the hot water storage temperature and the amount of hot water stored in the hot water storage tank 9, each thermistor for detecting the refrigerant temperature and water temperature of each part, a pressure sensor for detecting the discharge pressure of the compressor 1, etc. (Both not shown) are provided, and each detection signal is input to the operation control means 50.
  • the operation control means 50 controls each device based on these signals.
  • FIG. 2 is a flow chart showing an example of one-day driving operation from the hot water storage operation at night until the end of use of the hot water supply on the next day.
  • the operation control means 50 memorizes and learns the amount of hot water used every day, estimates the amount of hot water used the next day, determines the hot water storage temperature and the amount of hot water at night, and the hot water storage amount is a night discount time (for example, 23) Learning control means for setting the hot water storage operation start time so as to boil within (hours to 7:00).
  • Hot water storage operation starts at the set time. That is, the heat pump in FIG. 1 is operated and the tank circulation pump 14 is operated, and the water in the hot water storage tank 9 is exchanged by the water refrigerant heat exchanger 2 between the high-temperature refrigerant and the tank hot water circulated from the hot water storage tank 9. Is boiled in hot water (step 61).
  • the hot water storage operation is continued.
  • the heat pump operation is stopped and the hot water storage operation is ended (step 63).
  • the operation control means 50 adjusts the amount of water supplied from the hot water mixing valve 11 so that the hot water supply temperature becomes an appropriate temperature.
  • Hot water is supplied at an appropriate temperature by the tank hot water supply circuit of the metal fitting 6, the pressure reducing valve 7, the water supply water amount sensor 8, the hot water storage tank 9, the hot water mixing valve 11, the hot metal fitting 12, and the kitchen faucet 13 (step 65).
  • the faucet is closed and the use of hot water is completed (step 66)
  • the hot water supply is stopped.
  • the operation control means 50 detects the hot water storage temperature and the amount of hot water in the hot water storage tank 9 by the tank thermistor during the tank hot water supply operation (step 65) and when the hot water supply operation is stopped, and determines the tank remaining hot water amount (step 67). However, normally, if the amount of hot water used is too much compared to the estimated amount of learning up to the previous day and the amount of remaining hot water in the tank is less than the specified amount, the heat pump is operated to increase the amount of water in the tank (step 68). In the hot water storage amount determination (step 69), the heat pump operation is stopped after the hot water storage temperature and the hot water storage amount have reached the specified values, and the hot water storage operation is terminated (step 70).
  • the operation control means 50 causes the next learning control means to function. That is, it detects the remaining hot water temperature of the tank, the remaining hot water amount, the amount of hot water used, etc., calculates the amount of hot water used on that day, estimates the next day's usage, calculates the heating temperature and amount at night, the start of heating operation, etc.
  • the night heating condition is set (step 71).
  • the hot water storage operation is performed again at night so that the specified amount of tank boiling increases (step 61).
  • the learning control means generally estimates and calculates the amount of hot water used on the next day so that it can be in time just by increasing the nighttime temperature based on, for example, the outside air temperature, the water supply temperature, and the amount of hot water used for the past seven days. Or estimate the amount of hot water storage where efficiency is most improved.
  • FIG. 3 shows a plan view of the heat pump unit 30 with the top surface of the box body 15 removed
  • FIG. 4 shows a front view of the heat pump unit 30 with the front surface removed.
  • the rear compressor 1 and the air heat exchanger 4 are omitted.
  • the box 15 of the heat pump unit 30 has a substantially rectangular shape, and the air heat exchanger 4 is installed on the back and left side, and the fan 5 that is rotated by the fan motor 16 is installed opposite to the air heat exchanger 4.
  • the fan 5 is classified into a suction type and a blow-out type, and the front and rear directions of the fan 5 are different depending on the suction type.
  • a blow-type propeller fan is used and is passed through the air heat exchanger 4 from the back and left sides. It sucks outside air and blows it out to the front.
  • the box 15 is divided into left and right by a partition plate 17.
  • the space on the left and right sides (the right side of the drawing) partitioned by the partition plate 17 is a storage chamber S in which the compressor 1 and the water / refrigerant heat exchanger 2 are stored.
  • This storage chamber S is generally a machine room. is called.
  • the water-refrigerant heat exchanger 2 is installed on the front side of the storage chamber S, and the compressor 1 is installed on the rear side.
  • the water-refrigerant heat exchanger 2 is configured to circulate the refrigerant from one end to the other end, and is arranged so that each end is positioned up and down as shown in FIG. Is. That is, the water-refrigerant heat exchanger 2 is disposed in the storage chamber S in an upright state with the direction between both ends coincided with the vertical direction.
  • the water refrigerant heat exchanger 2 is composed of a plurality of heat exchange members 2g, 2h, 2i, 2j, 2k, 2l arranged adjacent to each other.
  • the water / refrigerant heat exchanger 2 shown in FIG. 3 six heat exchange members 2g to 2l are used. However, it is not limited to this.
  • Each of the heat exchange members 2g to 2l is formed by winding the refrigerant side heat transfer tube 2a and the water supply side heat transfer tube 2c in a coil shape, and has a substantially cylindrical shape.
  • the plurality of heat exchange members 2g to 2l are provided by being divided into a plurality of heat exchange member groups 2e and 2f. Specifically, the six heat exchange members 2g to 2l are divided into two heat exchange member groups 2e and 2f, three by three. The heat exchange member groups 2e and 2f are arranged with the heat exchange members 2g to 2i and 2j to 2l facing each other. By the way, each heat exchange member group 2e, 2f may be operated simultaneously, and only one of them may be operated.
  • the heat pump water heater is provided with a vacuum heat insulating material so as to surround the water refrigerant heat exchanger 2. Specifically, the vacuum heat insulating material is wound around the outer periphery of the water-refrigerant heat exchanger 2.
  • the structure of the vacuum heat insulating materials 18 and 19 will be described.
  • the vacuum heat insulating materials 18 and 19 those having a substantially square shape in a flat state are used.
  • the shape of the vacuum heat insulating materials 18 and 19 is a simple square shape, the merit that the vacuum heat insulating materials 18 and 19 can be automatically manufactured, the mounting work is easy, and the parts cost and processing cost are easy. There is a merit that the reduction can be achieved.
  • the vacuum heat insulating materials 18 and 19 include a heat insulating material main body 27 and protective members 28 a and 28 b that protect the heat insulating material main body 27. Since the vacuum heat insulating materials 18 and 19 have the same structure, only the vacuum heat insulating material 18 will be described below.
  • the protection members 28a and 28b prevent the heat insulation effect from being lost when the heat insulating body 27 is damaged and the vacuum state is destroyed. Specifically, the protection members 28a and 28b are bonded to both surfaces of the heat insulating material body, and the vacuum heat insulating materials 18 and 19 have a triple structure in which the heat insulating material body 27 is sandwiched between the protection members 28a and 28b from both surfaces.
  • the vacuum heat insulating materials 18 and 19 are not limited to this, and the protection members 28a and 28b may be provided only in a portion to be particularly protected in the heat insulating material main body 27, for example, either one of them. What is joined only to a surface or what is provided only in a part of surface which heat insulation material main part 27 has may be used. Furthermore, when there is no protrusion etc. around the vacuum heat insulating materials 18 and 19, only the heat insulating material body 27 may be used as the vacuum heat insulating material 2 without using the protection members 28a and 28b.
  • the heat insulating material body 27 is formed by wrapping a core material 27c such as glass wool (a cotton-like material made of glass fiber) in a vacuum state with a metal member such as aluminum or stainless steel. That is, the heat insulating body 27 has a core member 27c sealed inside a metal member.
  • the heat insulating material body 27 has a structure in which a core material 27c is sandwiched between metal thin plates (or metal films) 27a and 27b. More specifically, the heat insulating material body uses metal thin plates 27a and 27b larger than the core material 27c, the metal thin plates 27a and 27b are arranged so as to protrude from the core material 27c, and the protruding peripheral edge portion. It is produced by sticking. When the peripheral edge that protrudes is attached to the heat insulating material body 27, it is folded, for example, inward.
  • protection members 28a and 28b a cushion material such as urethane or a heat insulating material is used, but the invention is not limited thereto, and a film such as vinyl may be used.
  • the protective members 28a and 28b are matched with the position of the core material 27c of the heat insulating material main body 27. Are preferably joined from both sides.
  • the vacuum heat insulating materials 18 and 19 preferably have at least a dimension equal to or larger than the heat transfer distance of the metallic thin plates 27a and 27b, and have as large an area as possible. According to the vacuum heat insulating material 23, the heat insulating effect can be ensured as compared with a method in which a plurality of small vacuum heat insulating materials are used side by side.
  • the thickness A of the core material 27c when the thickness A of the core material 27c is about 5 mm, a sufficient heat insulating effect can be exhibited if the dimension (width or length) B of each side of the core material 27c is about 200 mm or more.
  • the thickness A of the material 27c is about 10 mm, it has been found that a sufficient heat insulating effect can be exhibited if the dimension (width or length) B of each side of the core material 27c is about 100 mm or more.
  • a plurality of vacuum heat insulating materials 18 and 19 are provided corresponding to the heat exchange members 2g to 2i and 2j to 2l divided into the heat exchange member groups 2e and 2f. . That is, the heat exchange member groups 2e and 2f are wound so that separate vacuum heat insulating materials 18 and 19 make one round of the outer periphery, and the three heat exchange member groups 2e and 2f are close to each other and face each other. Installed. Moreover, the vacuum heat insulating materials 18 and 19 are wound in a state where both end edges in the outer circumferential direction face each other with a gap. Thus, by winding the vacuum heat insulating materials 18 and 19 for each of the heat exchange member groups 2e and 2f, the parts can be completed for each of the heat exchange member groups 2e and 2f, so that the manufacturing process is made more efficient. be able to.
  • edge portions in the outer peripheral direction of the vacuum heat insulating materials 18 and 19 are arranged so as to be positioned between the plurality of heat exchange members 2g to 2l. Specifically, both end edges in the outer peripheral direction of the vacuum heat insulating materials 18 and 19 are disposed between the heat exchange member groups 2e and 2f (or opposite portions of the heat exchange member groups 2e and 2f). Yes. That is, the opposing portions 18a and 19a at the edge portions of the vacuum heat insulating materials 18 and 19 are located between the heat exchange member groups 2e and 2f.
  • the opposing parts 18a and 19a of the both-ends edge part of the water-refrigerant heat exchanger 2 Since it is located inside, it is possible to prevent heat from escaping from the gaps 18a and 19a between the edge portions. Therefore, the usage-amount of the vacuum heat insulating materials 18 and 19 can be decreased. However, the gaps may be eliminated by attaching both edge portions together.
  • the vacuum heat insulating materials 18 and 19 are arranged such that the positions of the opposing portions 18a and 19a between the both end edges are shifted from each other to the left and right. As a result, even if there is a gap between both end edges of the vacuum heat insulating material 18 wound around one heat exchange member group 2e, the heat escaped from the vacuum is wound around the other heat exchange member group 2f. It can be prevented by the heat insulating material 19.
  • compressor 1, the water refrigerant heat exchanger 2, and the air heat exchanger 4 are provided with refrigerant pipes or water pipes, which are connected to each other to form the heat pump refrigerant circuit and the tank hot water storage circuit shown in FIG. Is omitted in FIGS. 3 and 4.
  • the water refrigerant heat exchanger 2 can be directly insulated (or kept warm) by winding the vacuum heat insulating materials 18 and 19 excellent in heat insulation around the outer periphery of the water refrigerant heat exchanger 2. Therefore, regardless of where the water refrigerant heat exchanger 2 is installed, even when the partition plate 17 is not provided, it is possible to reduce the heat radiation from the water refrigerant heat exchanger 2 having a large heat loss after the hot water storage tank 9. In addition, if the water refrigerant heat exchanger 2 and the compressor 1 are accommodated in the accommodation chamber, the heat radiation loss of the water refrigerant heat exchanger 2 can be further reduced.
  • the water-refrigerant heat exchanger 2 has a large heat radiation from the upper part, and it is particularly important to keep the heat of this part. Moreover, the water refrigerant heat exchanger 2 allows high-temperature refrigerant to flow from the upper end toward the lower end, and conversely, causes water to flow from the lower end toward the upper end. In particular, the upper part becomes hot. Therefore, the vacuum heat insulating materials 18 and 19 are disposed at least on the upper part of the water-refrigerant heat exchanger 2.
  • the vacuum heat insulating material 18 is disposed on the upper portion of the water refrigerant heat exchanger 2, and the lower heat insulating material 21 made of a general heat insulating material such as urethane foam is disposed on the lower portion.
  • cost reduction can be aimed at by using the vacuum heat insulating materials 18 and 19 only for the upper part where heat retention is particularly important.
  • a top heat insulating material 20 is also arranged at the top of the water refrigerant heat exchanger 2.
  • the top heat insulating material 20 is disposed so as to cover the water refrigerant heat exchanger 2 and the vacuum heat insulating materials 18 and 19, and has a substantially U-shaped cross section.
  • the top heat insulating material 20 may be a vacuum heat insulating material, but a general heat insulating material such as urethane foam is used in consideration of easiness of processing with a substantially U-shaped cross section. Specifically, it is manufactured thicker by, for example, urethane foam molding.
  • FIG. 6 shows only a plan view of the water-refrigerant heat exchanger 2, but other configurations are basically the same as those of the above-described embodiment including, for example, the top heat insulating material 20 shown in FIG. Common components are denoted by the same reference numerals and description thereof is omitted.
  • FIG. 6 shows a case where a single vacuum heat insulating material 22 is wound around the outer periphery of the water-refrigerant heat exchanger 2.
  • the vacuum heat insulating material 22 is arranged with overlapping both end edges 22a and 22b in the outer peripheral direction. Both edge portions 22a and 22b are fixed using a fixing member such as a tape 23 or the like.
  • the fixing member is not limited to this.
  • both end edges 22a and 22b in the outer peripheral direction of the vacuum heat insulating material 22 are arranged so as to be positioned between the plurality of heat exchange members 2g to 2l.
  • the vacuum heat insulating material 22 is provided such that the edge in the outer peripheral direction enters a concave portion 2m formed between the plurality of heat exchange members 2g to 2l.
  • the overlapping portions of both end edges 22a and 22b are provided so as to be located in the concave portion 2m.
  • the structure in this embodiment is suitable for a heat pump water heater of a type that simultaneously heats each heat exchange member group 2e, 2f by heat pump operation.
  • FIG. 7 shows only a plan view of the water-refrigerant heat exchanger 2, but other configurations including the top heat insulating material 20 shown in FIG. 3, for example, are basically the same as those in the above embodiment. Common components are denoted by the same reference numerals and description thereof is omitted.
  • one vacuum heat insulating material 24 is used for the water-refrigerant heat exchanger 2, and one vacuum heat insulating material 24 is provided for each of the heat exchange member groups 2e and 2f. It is provided so as to surround the entire circumference of 2j to 2l. That is, both edge portions 24a and 24b in the outer peripheral direction are disposed between the heat exchange member groups 2e and 2f, and an intermediate portion in the outer peripheral direction is disposed between the heat exchange member groups 2e and 2f.
  • the vacuum heat insulating material 24 has a shape of approximately 8 when viewed from above. Further, the water-refrigerant heat exchanger 2 and the vacuum heat insulating material 24 are fixed from the outer peripheral side by a fixing member including a tightening band 25 and a screw 26. However, the fixing member is not limited to this.
  • the structure in this embodiment is such that heat is maintained for each of the heat exchange member groups 2e and 2f, and therefore the temperature of the refrigerant and water may be different for each of the heat exchange member groups 2e and 2f. Therefore, it is suitable for a heat pump water heater of a type in which the heat exchange member groups 2e and 2f are separately heated by heat pump operation.
  • FIGS. 3 to 6 can be selected and applied according to the priority order such as emphasis on heat insulation performance, reduction of parts cost, improvement of workability, etc. in addition to the configuration and operation control of the heat pump unit.
  • the heat insulating property of the refrigerant heat exchanger 2 can be achieved, and an effect suitable for the purpose can be obtained.
  • the heat pump water heater according to the present embodiment wraps the vacuum heat insulating materials 18, 19, 22, and 24 around the outer periphery of the water-refrigerant heat exchanger 2, and minimizes material costs and work costs. It can suppress and improve the heat insulation of the water-refrigerant heat exchanger 2, and can aim at energy saving improvement as a new heat dissipation loss reduction measure.
  • the present invention when the present invention is applied to a case where the capacity of the hot water storage tank is small or for business use where hot water is frequently supplied, the amount of hot water storage is insufficient with only hot water storage at night, and the operation is increased during the daytime. Therefore, it is possible to obtain a great effect such as an energy saving effect by improving the heat retaining property of the water-refrigerant heat exchanger 2 and a shortening of the heating operation rising time.
  • water and refrigerant are configured to flow through the water refrigerant heat exchanger 110 in opposite directions, and as shown in FIGS. 8 and 9, the water refrigerant heat exchanger 110 includes water. And it is divided into the high temperature part H and the low temperature part L according to the temperature of a refrigerant
  • illustration of the packaging material 140 etc. which are mentioned later is abbreviate
  • the water-refrigerant heat exchanger 110 includes a plurality of heat exchange members 110c, 110d and 110e, 110f that are fluidly connected in series.
  • the specific dimensions of the heat exchange members 110c to 110e will be described.
  • the outer diameter is about 60 mm and the height is about 500 mm.
  • the said vacuum heat insulating materials 120 and 130 are arrange
  • the heat exchange members 110d and 110f arranged on the rear stage side in the water flow are on the front stage side in the water flow ( Or it becomes high temperature compared with the heat exchange members 110c and 110e arrange
  • coolant As a result, the water-refrigerant heat exchanger 110 is divided into a high temperature part H and a low temperature part L as a whole.
  • the heat exchange members 110c, 110d and 110e, 110f connected in series are arranged side by side in the same direction between both ends, and the direction in which the refrigerant and water are circulated is opposite to the adjacent heat exchange members. It is comprised so that it may become. That is, the heat exchange members 110c, 110d or 110e, 110f connected in series are connected at either one end side in the direction between both ends (or the longitudinal direction).
  • the water refrigerant heat exchanger 110 includes a plurality of heat exchange member groups 110a and 110b configured by a plurality of heat exchange members 110c and 110d and 110e and 110f that are fluidly connected in series.
  • the heat exchange member groups 110a and 110b are, among the heat exchange members 110c and 110d and 110e and 110f constituting the heat exchange member groups 110a and 110b, a high-temperature heat exchange member 110d located on the rear side in the water flow. , 110f are arranged adjacent to each other.
  • the high-temperature part H of the water-refrigerant heat exchanger 110 is constituted by a plurality of the high-temperature heat exchange members 110d and 110f arranged adjacent to each other among the heat exchange member groups 110a and 110b. Further, the low temperature portion L of the water refrigerant heat exchanger 110 is constituted by low temperature heat exchange members 110c and 110e.
  • the water-refrigerant heat exchanger 110 is arranged side by side in a horizontal direction with a plurality of heat exchange members 110c to 110f standing up. That is, the water-refrigerant heat exchanger 110 is configured by arranging a plurality of heat exchange members 110c to 110f along a vertical plane. In the water-refrigerant heat exchanger 110, both sides in the horizontal direction become the low temperature part L, and the inside of the low temperature parts L, L on both sides becomes the high temperature part H. And the said vacuum heat insulating material 110 is arrange
  • the two heat exchange members 110c, 110d and 110e, 110f constituting each heat exchange member group 110a, 110b are connected to each other at the end portion on the lower side in the vertical direction.
  • Heated water is introduced from the upper end of one heat exchange member 110c or 110e arranged on the outer side in the horizontal direction and reaches the lower end. Then, it is introduced into the lower end portion of the other heat exchange member 110d or 110f arranged on the inner side in the horizontal direction through the connecting pipe, and flows through a path from the lower end portion to the upper end portion.
  • the refrigerant that heats the water is introduced from the upper end of the other heat exchange member 110d or 110f to reach the lower end, is introduced to the lower end of one heat exchange member 110c or 110e through the connection pipe, It flows along the path from the lower end to the upper end.
  • the heat insulating material bodies 121 and 131 constituting the vacuum heat insulating materials 120 and 130 are formed of two heat exchange members 110d and 110f on the inner side among the heat exchange members 110c to 110f having a circular shape in plan view. It has at least a width larger than the width (that is, twice the outer diameter of the heat exchange member).
  • the widths of the heat insulating material bodies 121 and 131 have the same dimensions as the distances between the centers of the heat exchange members 110c and 110e disposed on the outside. That is, the width of the heat insulating material bodies 121 and 131 is about 180 mm.
  • the heat insulating material bodies 121 and 131 of the two vacuum heat insulating materials 120 and 130 have different heights as shown in FIG. Specifically, the heat insulating material body 121 of the vacuum heat insulating material 120 on one side is provided corresponding to almost the entire height of the heat exchange members 110c to 110f and has a height of about 460 mm. Moreover, since various piping is arrange
  • the thickness of the vacuum heat insulating materials 120 and 130 when the thickness A of the core material is about 5 mm, the dimensions (width or length) of each side of the core material. ) When B is set to about 200 mm or more and the thickness A of the core material is about 10 mm, the dimension (width or length) B of each side of the core material is set to about 100 mm or more. And as a protective member which protects a heat insulating material main body, the urethane which has a thickness of about 3 mm is employ
  • the protective members 122 and 132 constituting the vacuum heat insulating materials 120 and 130 are larger than the heat insulating material main bodies 121 and 131 (that is, the edges of the protective members 122 and 132 are larger than the edges of the heat insulating material main bodies 121 and 131).
  • the size is not limited to a specific one.
  • the water-refrigerant heat exchanger 110 is sandwiched between the vacuum heat insulating materials 120 and 130 from both sides, and is further wrapped with a packaging material 140 as shown in FIG.
  • a packaging material 140 Any material can be used as the wrapping material 140, but a material having heat insulation properties is preferable.
  • a flame retardant felt is used.
  • the felt has a thickness of about 5 mm.
  • the packaging material 140 is provided with fixing means such as a hook-and-loop fastener 143 so that the state in which the water-refrigerant heat exchanger 110 is wrapped can be maintained.
  • the packaging material 140 includes a side surface covering portion 141 that covers the side surface of the water refrigerant heat exchanger 110 and an upper surface coating that covers the upper side of the water refrigerant heat exchanger 110. Part 142.
  • the surface fastener 143 is provided at the end of the side cover 141 and the end of the upper cover 142.
  • the water-refrigerant heat exchanger 110 is incorporated in the heat pump unit 30 in the packaging state as described above.
  • a method for achieving the packaging state as described above will be described with reference to FIG.
  • the packaging material 140 is developed in a flat shape, and the vacuum heat insulating material 120 is placed thereon.
  • the water-refrigerant heat exchanger 110 is placed so that the high temperature part H is on the vacuum heat insulating material 120.
  • the vacuum heat insulating material 130 is mounted on the high temperature part H of the water-refrigerant heat exchanger 110.
  • the packaging material 140 is folded so as to wrap the water refrigerant heat exchanger 110 together with the vacuum heat insulating materials 120 and 130.
  • the packaging material 140 is folded by applying a tightening force so that the vacuum heat insulating materials 120 and 130 are not displaced.
  • the water refrigerant heat exchanger 110 prevents the vacuum heat insulating materials 120 and 130 from shifting by wrapping them tightly with the packaging material 140, but is not limited to this, and the water refrigerant heat exchanger 110 and the vacuum heat insulation are not limited thereto.
  • the members 120 and 130 may be fixed by any means.
  • the heat pump water heater according to the present invention is not limited to the configuration of each of the above embodiments, and various modifications can be made without departing from the spirit of the invention.
  • the vacuum heat insulating material may not be wound around the entire circumference, or may be partially wound around a part of the outer circumference.
  • vacuum heat insulating material may be one in which the compressor 1 and the water refrigerant heat exchanger 2 are collectively wound around the outer periphery thereof.
  • the heat pump water heater according to the present invention may be any one as long as a vacuum heat insulating material is disposed so as to surround the water refrigerant heat exchanger, and for example, a storage chamber for accommodating the water refrigerant heat exchanger is provided.
  • a vacuum heat insulating material may be provided in a portion of the wall portion defining the storage chamber that faces the water refrigerant heat exchanger.
  • water and refrigerant are configured to flow through the water-refrigerant heat exchanger 110 in opposite directions, and the water-refrigerant heat exchanger 110 is divided into a high-temperature part H and a low-temperature part L according to the temperature of water and refrigerant.
  • the vacuum heat insulating materials 130 and 140 have been described as examples of the heat pump water heater arranged corresponding to at least the high temperature portion H of the water refrigerant heat exchanger 110.
  • the heat pump water heater according to the third embodiment also corresponds to the heat pump water heater having such a configuration.
  • each heat exchange member group 110a, 110b was demonstrated as what was comprised by two heat exchange members 110c, 110d and 110e, 110f, it is not limited to this, Each heat exchange member group 110a 110b may be one heat exchange member or three or more heat exchange members.
  • the water refrigerant heat exchanger 110 has been described as being arranged in the horizontal direction in a state where the plurality of heat exchange members 110c to 110f are erected, the present invention is not limited to this.
  • the replacement member groups 110a and 110b may be arranged to face each other.
  • the high-temperature heat exchange members 110d and 110f located on the rear side in the flow of water are located on the front side.
  • a structure in which the low-temperature heat exchange members 110c and 110e are arranged to face each other is conceivable.
  • the said vacuum heat insulating materials 130 and 140 were demonstrated as what is arrange
  • a high-temperature member such as the compressor 1 is disposed on the other side of the water-refrigerant heat exchanger 110, and it is preferable to apply heat from a high-temperature member such as the compressor 1 to insulate. It can be adopted in some cases.
  • the heat pump water heater according to the present invention as described above can provide a water heater that can effectively improve the efficiency.
  • FIG. 1 It is front sectional drawing which shows schematic structure of the vacuum heat insulating material used in the heat pump water heater which concerns on 1st Embodiment of this invention. It is a plane sectional view showing the heat insulation structure of the water refrigerant heat exchanger in the heat pump water heater concerning a 2nd embodiment of the present invention. It is a plane sectional view showing the heat insulation structure of the water refrigerant heat exchanger in the heat pump water heater concerning a 3rd embodiment of the present invention. It is a perspective view which shows the water refrigerant

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Thermal Insulation (AREA)
  • Details Of Fluid Heaters (AREA)
PCT/JP2009/052736 2008-07-31 2009-02-18 ヒートポンプ給湯機 WO2010013504A1 (ja)

Priority Applications (2)

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KR1020117002246A KR101346444B1 (ko) 2008-07-31 2009-02-18 히트 펌프 급탕기
CN200980129588.8A CN102105753B (zh) 2008-07-31 2009-02-18 热泵供热水机

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JP2008197181 2008-07-31
JP2008-197181 2008-07-31
JP2008291626A JP5308783B2 (ja) 2008-07-31 2008-11-14 ヒートポンプ給湯機
JP2008-291626 2008-11-14

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KR (1) KR101346444B1 (enrdf_load_stackoverflow)
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Cited By (2)

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FR2965896A1 (fr) * 2010-10-08 2012-04-13 Atlantic Climatisation Et Ventilation Systeme de pilotage d’un dispositif de chauffage d’appoint destine a delivrer une puissance thermique d’appoint a une pompe a chaleur.
CN113551045A (zh) * 2021-06-15 2021-10-26 吕志翼 一种设置有沥青烟气专用保温阀门

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JP5851212B2 (ja) * 2011-11-14 2016-02-03 日立アプライアンス株式会社 断熱材およびこれを備えた冷凍機器の製造方法
JPWO2015128900A1 (ja) * 2014-02-28 2017-03-30 三菱電機株式会社 熱移動装置
JP2017067416A (ja) * 2015-10-02 2017-04-06 パナソニックＩｐマネジメント株式会社 ヒートポンプ給湯装置
JP2017072265A (ja) * 2015-10-05 2017-04-13 パナソニックＩｐマネジメント株式会社 ヒートポンプ給湯装置

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JP2008002776A (ja) * 2006-06-26 2008-01-10 Hitachi Appliances Inc ヒートポンプ給湯装置
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FR2965896A1 (fr) * 2010-10-08 2012-04-13 Atlantic Climatisation Et Ventilation Systeme de pilotage d’un dispositif de chauffage d’appoint destine a delivrer une puissance thermique d’appoint a une pompe a chaleur.
CN113551045A (zh) * 2021-06-15 2021-10-26 吕志翼 一种设置有沥青烟气专用保温阀门

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CN102105753A (zh) 2011-06-22
CN102105753B (zh) 2014-01-29
KR20110028639A (ko) 2011-03-21
JP2010054183A (ja) 2010-03-11
KR101346444B1 (ko) 2014-01-02
JP5308783B2 (ja) 2013-10-09

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