JP2007212060A - Heat pump water heater and vacuum heat insulating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce influence in fracture of a vacuum heat insulating material by disposing a plurality of vacuum heat insulating materials independently sealed around a hot water storage tank, and to easily dispose the vacuum heat insulating materials on the hot water storage tank while keeping heat insulating performance. <P>SOLUTION: The plurality of divided vacuum heat insulating materials 31a, 31b, 31c are arranged in the longitudinal direction of the hot water storage tank, for example, in a state of being constituted by covering a core material part 31a with a laminate film 31a1 to seal it in vacuum, and forming a projecting portion, and the core material portion has a gradient so that its upper portion is thickened and its lower portion is thinned to improve heat insulating heat retaining performance of the upper portion of the hot water storage tank 30. As the vacuum heat insulating materials are disposed to cover the circumference of the hot water storage tank 30 approximately in the cylindrical shape, the workability in covering the circumference of the hot water storage tank 30 by the vacuum heat insulating materials 31a, 31b, 31c can be improved, and a degree of influence in fracture of the vacuum heat insulating materials 31a, 31b, 31c can be reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention stores a refrigerant circulation circuit that circulates refrigerant in a closed circuit in which a compressor, a water refrigerant heat exchanger, an air refrigerant heat exchanger, and a decompression means are sequentially connected, and hot water heated by the water refrigerant heat exchanger. The present invention relates to a heat pump water heater that houses a cylindrical hot water storage tank in a single housing.

  A conventional heat pump type hot water heater is heated by a refrigerant circulation circuit that circulates refrigerant in a closed circuit in which a compressor, a water refrigerant heat exchanger, an air refrigerant heat exchanger, and a decompression means are sequentially connected, and the water refrigerant heat exchanger. It consists of a hot water storage tank that stores hot water.

  Such a heat pump type hot water heater has a large hot water storage tank, and since all the necessary amount for use during the day is boiled at night and stored at high temperature, the heat dissipation loss from the hot water storage tank is large, and it is installed with an increase in the size of the hot water heater Etc. also had many problems.

  Therefore, in a heat pump water heater having a heat pump circuit, a refrigerant-to-water heat exchanger, a hot water storage tank, a direct hot water supply circuit, a hot water supply control unit, and a heat pump control unit, a vacuum heat insulating material is provided around the hot water storage tank. The thing which achieves compactness and high heat insulation by installing was considered (patent document 1, patent document 2).

FIG. 7 is a schematic view of a hot water storage tank of a conventional heat pump type hot water heater. In FIG. 7, a vacuum heat insulating material 52 having good heat insulating performance is installed in close contact with the hot water storage tank 51 so that the temperature drop can be reduced as much as possible, and a refrigerant is provided around the vacuum heat insulating material 52. By installing the anti-water heat exchanger 53, the capacity of the hot water storage tank 51 and the water heater itself can be made compact.
JP 2005-315480 A JP 2002-277055 A

  However, when the vacuum heat insulating material 52 having good heat insulating performance is placed in close contact with the hot water storage tank 51, if any one hole is opened in the vacuum heat insulating material 52 for some reason such as an operation error, the vacuum heat insulating material 52 There is a problem that the heat insulation and heat retention effect is remarkably lost, the heat dissipation loss from the hot water storage tank 51 is increased, and the capacity of the heat pump type hot water heater is reduced. In particular, there are metal or resin parts around the hot water storage tank 51 and its surroundings, and it is also necessary to connect pipes or the like. Therefore, if the hot water storage tank 51 is covered with one vacuum heat insulating material 52, the workability is improved. As the problem worsened, the possibility of damage was fully considered.

  In view of this, the present invention reduces the influence when the vacuum heat insulating material is broken by disposing a plurality of independently sealed vacuum heat insulating materials around the hot water storage tank, and maintains the heat insulating performance while maintaining the heat insulating performance. It aims at making arrangement | positioning to the hot water storage tank of a material easy.

In order to solve the conventional problems, a heat pump water heater of the present invention includes a refrigerant circulation circuit that circulates a refrigerant in a closed circuit in which a compressor, a water refrigerant heat exchanger, an air refrigerant heat exchanger, and a decompression unit are sequentially connected. A cylindrical hot water storage tank that stores hot water heated by the water refrigerant heat exchanger, a connection valve that connects a water supply pipe that supplies water to the hot water storage tank, the refrigerant circulation circuit, and the hot water storage tank are integrated. And a vacuum heat insulating material that forms a convex portion by covering the core material portion with a laminate film and vacuum-sealing so as to insulate and retain heat around the hot water storage tank, and the vacuum heat insulating material is The hot water storage tank is divided into a plurality of parts in the longitudinal direction and is arranged so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical.

  In the above-described configuration, the core material portion is covered with a laminate film so as to insulate and retain heat around the hot water storage tank, and a vacuum heat insulating material that forms a convex portion by vacuum-sealing is disposed, and the vacuum heat insulating material is divided into a plurality of parts. Therefore, even if a hole or the like is broken in the vacuum insulation material for some reason, the insulation performance of the vacuum insulation material only in that part will decrease, and the insulation performance of other parts will not decline, so that The degree of influence is reduced. In addition, since the vacuum insulation material can be divided into multiple parts, the workability when the hot water storage tank is covered with the vacuum insulation material is improved, and the risk of damage to the vacuum insulation material is also reduced. Can be made.

  Further, the vacuum heat insulating material is divided into a plurality in the longitudinal direction of the hot water storage tank, and is disposed so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical. Even if the curvature of the hot water storage tank is slightly deviated, it is easy to arrange the vacuum heat insulating material along the cylindrical hot water storage tank and workability is improved.

  The vacuum heat insulating material configuration of the present invention is provided with a vacuum heat insulating material that forms a convex portion by covering a core material portion with a laminate film so as to insulate and retain heat around the hot water storage tank, and forming a convex portion. Is divided into a plurality of parts in the longitudinal direction of the hot water storage tank, and is arranged so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical, so that the vacuum heat insulating material is placed along the cylindrical hot water storage tank. It is easy to arrange, and the workability when the periphery of the hot water storage tank is covered with the vacuum heat insulating material is improved, and the degree of influence when the vacuum heat insulating material is broken can be reduced.

  The first invention includes a compressor, a water refrigerant heat exchanger, an air refrigerant heat exchanger, a refrigerant circulation circuit that circulates refrigerant in a closed circuit in which decompression means are sequentially connected, and hot water heated by the water refrigerant heat exchanger. A cylindrical hot water storage tank for storing water, a connection valve for connecting a water supply pipe for supplying water to the hot water storage tank, and a housing for integrally storing the refrigerant circulation circuit and the hot water storage tank, Covering the core material part with a laminate film so as to insulate and heat the surroundings, and arrange a vacuum heat insulating material to form a convex part by vacuum sealing, and the vacuum heat insulating material is divided into a plurality in the longitudinal direction of the hot water storage tank, And it is set as the structure arrange | positioned so that it might cover the circumference | surroundings of the said hot water storage tank so that it might become a substantially cylindrical shape.

  Then, a vacuum heat insulating material that covers the core portion with a laminate film and vacuum seals to form a convex portion is provided so as to insulate and retain heat around the hot water storage tank, and the vacuum heat insulating material is divided into a plurality of parts. Therefore, even if a hole or the like is broken in the vacuum insulation material for any reason, the insulation performance of the vacuum insulation material only in that part will be lowered, and the insulation performance of other parts will not be lowered, so the degree of influence is Less. In addition, since the vacuum insulation material can be divided into multiple parts, the workability when the hot water storage tank is covered with the vacuum insulation material is improved, and the risk of damage to the vacuum insulation material is also reduced. Can be made.

  Further, the vacuum heat insulating material is divided into a plurality in the longitudinal direction of the hot water storage tank, and is disposed so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical. Even if the curvature of the hot water storage tank is slightly deviated, it is easy to arrange the vacuum heat insulating material along the cylindrical hot water storage tank and workability is improved.

In the second invention, in particular, the vacuum heat insulating material of the first invention is divided into a plurality of parts in the longitudinal direction of the hot water storage tank, and is disposed so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical. ,
The adjacent vacuum heat insulating materials are arranged so as to alternate between the front and back, and at least a part of the vacuum heat insulating material of the vacuum heat insulating material is arranged so as to overlap the adjacent core material portion of the vacuum heat insulating material. is there.

  The vacuum heat insulating material is divided into a plurality of portions in the longitudinal direction of the hot water storage tank, and is disposed so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical, and the adjacent vacuum heat insulating materials are alternately turned over. Since the vacuum sealing allowance portion of the vacuum heat insulating material can be disposed so as to overlap on the adjacent core material portion of the vacuum heat insulating material, it is adjacent with a simple configuration. It is easy to make the side surface of the convex part formed by the core part covered with the laminate film of the vacuum heat insulating material adhere closely, and the vacuum with high heat insulating effect by increasing the coverage of the core part of the vacuum heat insulating material Insulation can be obtained.

  In particular, the third invention is configured such that the side wall of the vacuum heat insulating material of the vacuum heat insulating material according to any one of the first to second inventions is inclined so that the side walls of the adjacent vacuum heat insulating materials are in close contact with each other. It is as.

  And since it forms so that the side wall of an adjacent vacuum heat insulating material may incline easily by inclining the core material side surface of the said vacuum heat insulating material, the convex part of the core material part of an adjacent vacuum heat insulating material is formed. By using the inclined surface of the side wall as a guide surface and pressing it, the entire inclined surface can be brought into close contact, and the contact surface can be expanded, so that the space between the vacuum heat insulating materials facing each other can be reduced and the heat insulating effect can be further increased. Can be raised. In addition, even if some gaps are generated, the inclined surfaces facing each other can be complemented because there are overlapping portions, and the heat insulation effect can be maintained more.

  In the fourth invention, in particular, the vacuum heat insulating material according to any one of the first to third inventions is divided into a plurality of parts in the longitudinal direction of the hot water storage tank, and around the hot water storage tank so as to be substantially cylindrical. In addition to being arranged so as to cover, a joining means for joining and integrally forming the vacuum heat insulating material divided into a plurality of parts is provided.

  The vacuum heat insulating material is divided into a plurality in the longitudinal direction of the hot water storage tank, and is arranged so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical, and the vacuum heat insulating material divided into a plurality of parts is provided. Since there is a structure provided with a joining means that is integrally formed by joining, the vacuum heat insulating material divided into a plurality by the joining means can be integrated, and the side walls of the adjacent vacuum heat insulating materials are securely adhered, It is possible to protect the joints of the vacuum insulation material that is easily damaged by the joining means, and the workability when the surroundings are covered with the vacuum insulation material in the hot water storage tank is improved, and the risk of damage to the vacuum insulation material is improved. Sex can also be reduced.

  In the fifth invention, in particular, the vacuum heat insulating material is divided into a plurality of parts around the hot water storage tank of any one of the second to third inventions so as to be substantially cylindrical in the longitudinal direction of the hot water storage tank. In addition, the adjacent vacuum heat insulating materials are alternately arranged on the front and back sides, and at least a part of the vacuum heat insulating material is disposed so that the vacuum sealing margin portion of the vacuum heat insulating material overlaps the adjacent core material portion of the vacuum heat insulating material. In addition, there is provided an adhesive means for integrally forming the vacuum sealing margin part and the core part overlapping the vacuum heat insulating material by adhering at least a part thereof.

  And, since at least a part of the vacuum sealing allowance portion and the core material portion of the air insulating material overlapping with each other are bonded by the bonding means, the vacuum heat insulating material divided into a plurality by the bonding means can be integrated and adjacent to each other. While the side wall of the vacuum heat insulating material is securely brought into close contact with each other, a joining member or the like for integrally forming the vacuum heat insulating material divided into a plurality of parts is not required, and a simple configuration can be achieved and the configuration can be made at low cost.

  In the sixth invention, in particular, the vacuum heat insulating material of any one of the first to fifth inventions is divided into a plurality of parts in the longitudinal direction of the hot water storage tank, and around the hot water storage tank so as to be substantially cylindrical. In addition to being disposed so as to cover, the upper core material portion is thickened and a gradient is provided so that the lower portion is thinned, thereby improving the heat insulation and heat retaining performance of the upper portion of the hot water storage tank.

  The temperature of the hot water storage tank is higher at the upper part and lower at the lower part, and the vacuum heat insulating material has a gradient so that the upper core member is thicker and the lower part is thinner. The heat insulation and heat retention performance can be improved, and the heat insulation and heat insulation can be more effectively performed.

  The present invention according to claim 7 is configured such that the vacuum heat insulating material is used for a heat pump water heater or the like in which a core material portion at one end portion is thickened and a gradient is provided so that the other end portion is thinned.

  And, since the vacuum heat insulating material is configured to have a gradient so that the core part of one end is thick and the other end is thin, by using it in a part with a temperature gradient such as a heat pump water heater, A vacuum heat insulating material that can more effectively insulate and retain heat can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Hereinafter, a heat pump water heater according to an embodiment of the present invention will be described.

  FIG. 1 is a perspective view showing a schematic configuration of a heat pump water heater according to the present embodiment, FIG. 2 is a block diagram showing an internal arrangement of the heat pump water heater, and FIG. 3 is a vacuum heat insulating material around a hot water storage tank of the heat pump water heater. 4 is an external view of a hot water storage tank showing a state in which the vacuum heat insulating material is disposed, FIG. 4 is a vertical cross-sectional view of a main part in which the vacuum heat insulating material is disposed, and FIG.

  First, the overall configuration will be described with reference to FIGS.

  1 is a perspective view showing a schematic configuration of a heat pump water heater according to the present embodiment, FIG. 2 is a front view showing an internal arrangement of the heat pump water heater, and FIG. 3 is a vacuum heat insulating material around a hot water storage tank of the heat pump water heater. It is principal part sectional drawing which shows the state which has arrange | positioned.

  First, the overall configuration will be described with reference to FIGS.

  The heat pump water heater according to this embodiment includes a refrigerant circulation circuit 20 and a hot water storage tank 30 inside a cubic housing 10.

  Inside the housing 10, two spaces are formed in the left-right direction by the partition plate 11, the refrigerant circulation circuit 20 is disposed in one space, and the hot water storage tank 30 is disposed in the other space. In the surroundings, vacuum heat insulating materials 31a, 31b, 31c divided into a plurality of portions in the longitudinal direction of the hot water storage tank 30 are arranged so that the temperature of the hot water storage tank 30 can be reduced even a little by heat insulation. For example, a core part 31a2 as shown in FIG. 4 is covered with a laminate film 31a1 and vacuum-sealed to form a convex part, and the upper core part 31a2 is thickened and the lower part is thinned. In order to improve the heat insulation performance of the upper part of the hot water storage tank 30, a gradient is provided.

As shown in FIGS. 3 and 5 in particular, the vacuum heat insulating material 31 divided into a plurality around the hot water storage tank 30 is arranged so that the adjacent vacuum heat insulating materials 31a, 31b, and 31c are alternated. The laminated film 31b1 of the vacuum sealing allowance portion of the vacuum heat insulating material 31b is disposed so as to overlap the adjacent core material portion 31a2 of the vacuum heat insulating material 31a, and the vacuum heat insulating materials 31a and 31b are overlapped and vacuum sealed. The laminated film 31b1 and the core part 31a2 of the substitute part are integrally formed by bonding with an adhesive means 37 made of double-sided tape.

  The refrigerant circulation circuit 20 is configured by a closed circuit in which a compressor 21, a water refrigerant heat exchanger 22, an air refrigerant heat exchanger 23, and a decompression means (not shown) are sequentially connected to circulate the refrigerant. In addition, what uses a carbon dioxide refrigerant as this refrigerant | coolant is preferable.

  Here, the compressor 21 and the water-refrigerant heat exchanger 22 are installed on the support plate 12. The air refrigerant heat exchanger 23 is arranged in a substantially L shape in plan view so as to cover the rear surface and side surface of one space of the housing 10. A plurality of fans 24 and 25 are arranged in one space of the housing 10. These fans 24 and 25 perform heat exchange in the air refrigerant heat exchanger 23.

  In addition, a water supply pipe 32 for supplying water to the hot water storage tank 30, a hot water supply pipe 33 for deriving the hot water of the hot water storage tank 30 to the outside, a hot water supply pipe 34 for bath reheating, and a bath reheating service Connection valves 32A, 33A, 34A and 35A for connecting the water supply pipes 35 are arranged. The support plate 12 located in the lower front part of the hot water storage tank 30 is provided at a position higher than the other surfaces, and the connection valves 32A, 33A, 34A, 35A are arranged in the lower front part of the hot water storage tank 30. A space is formed. In FIG. 1, these connection valves 32A, 33A, 34A, and 35A are omitted.

  As described above, according to the present embodiment, for example, as shown in FIG. 4, the heat insulating tank 30 is covered with the laminated film 31a1 so that the core material portion 31a2 is insulated and heat-insulated to form a convex portion. Since the material 31a is provided and the vacuum heat insulating material 31 is divided into a plurality of vacuum heat insulating materials 31a, 31b and 31c, a hole or the like is formed in any one of the vacuum heat insulating materials 31a, 31b and 31c for some reason. Even if it breaks brightly, only the heat insulation performance of the vacuum heat insulating materials 31a, 31b, 31c only in those portions is lowered, and the heat insulation performance in other portions is not lowered, so the influence degree is reduced. Moreover, since the vacuum heat insulating materials 31a, 31b and 31c can be divided into a plurality of parts, the workability when the hot water storage tank 30 is covered with the vacuum heat insulating materials 31a, 31b and 31c is improved. The risk of breakage of the vacuum heat insulating materials 31a, 31b, 31c can also be reduced.

  Moreover, since the vacuum heat insulating material 31 is divided into a plurality of parts in the longitudinal direction of the hot water storage tank 30 and is disposed so as to cover the periphery of the hot water storage tank 30 so as to be substantially cylindrical, the vacuum heat insulating materials 31a, 31b, Even if the curvatures of 31c and the cylindrical hot water storage tank 30 are slightly deviated from each other, the vacuum heat insulating materials 31a, 31b, 31c can be easily disposed along the cylindrical hot water storage tank 30, and the workability is greatly improved.

  Further, since the adjacent vacuum heat insulating materials 31a, 31b, and 31c are alternately arranged, the laminate film 31b1 of the vacuum sealing allowance portion of the vacuum heat insulating material 31b is adjacent, for example, as shown in FIG. The core material portions 31a2 and 31b2 covered with the laminated films 31a1 and 31b1 of the adjacent vacuum heat insulating materials 31a and 31b can be arranged so as to overlap the core material portion 31a2 of the matching vacuum heat insulating material 31a. It is easy to closely contact the side surfaces of the convex portions formed by the vacuum heat insulating material 31a having a high heat insulating effect by increasing the coverage of the core material portions 31a2, 31b2, 31c2 of the vacuum heat insulating materials 31a, 31b, 31c. , 31b, 31c are obtained.

Further, the side surfaces of the core portions 31a2, 31b2, and 31c2 of the vacuum heat insulating materials 31a, 31b, and 31c are inclined so that the side walls of the adjacent vacuum heat insulating materials 31a, 31b, and 31c are easily adhered to each other. Since the inclined surfaces of the side walls forming the convex portions of the core portions 31a2, 31b2, and 31c2 of the matching vacuum heat insulating materials 31a, 31b, and 31c are used as guide surfaces, the entire inclined surfaces can be brought into close contact with each other. It becomes possible to expand, the gaps between the vacuum heat insulating materials 31a, 31b, 31c facing each other can be reduced, and the heat insulating effect can be further enhanced. In addition, even if some gaps are generated, the inclined surfaces facing each other can be complemented because there are overlapping portions, and the heat insulation effect can be maintained more.

  And since the laminate film 31b1 and the core material portion 31a2 of the vacuum sealing allowance portion where the vacuum heat insulating materials 31a and 31b overlap are bonded by the double-sided tape bonding means 37, the vacuum heat insulating material divided into a plurality by the bonding means 37 31a and 31b can be integrated, and similarly 31c can be integrated, and the side walls 31a2 and 31b2 of the adjacent vacuum heat insulating materials 31a, 31b and 31c can be securely brought into close contact with each other and divided into a plurality of vacuum heat insulating materials. A joining member or the like for integrally forming the materials 31a, 31b, and 31c is not required, and a simple configuration can be achieved, and the configuration can be reduced.

  Also, the temperature of the hot water storage tank 30 is high at the top and low at the bottom, and the vacuum heat insulating materials 31a, 31b, 31c are provided with a gradient so that the upper core portions 31a2, 31b2, 31c2 are thickened and the lower portions are thinned. Therefore, it is possible to improve the heat insulation and heat retention performance of the upper part of the hot water storage tank 30 and to more effectively heat and heat insulation.

  In the present embodiment, the adhesive means 37 is a double-sided tape. However, this may be an adhesive such as an instantaneous adhesive or hot melt, and the configuration of each other part is within a range that achieves the object of the present invention. The configuration may be anything.

(Embodiment 2)
FIG. 4 is a cross-sectional view of a main part showing a state in which the vacuum heat insulating materials 31a, 31b, and 31c are joined and integrally formed around the hot water storage tank 30 of the heat pump water heater in Embodiment 2 of the present invention. In the present embodiment, the configurations of the vacuum heat insulating materials 31a, 31b, 31c disposed around the hot water storage tank 30 are different from those of the first embodiment, and the configurations similar to those in FIGS. The same reference numerals as those in FIGS. 1 and 2 are assigned, and only configurations different from those in FIGS. 1 and 2 will be described.

    In FIG. 4, the vacuum heat insulating material 31 is divided into a plurality of vacuum heat insulating materials 31 a, 31 b, 31 c in the longitudinal direction of the hot water storage tank 30 around the hot water storage tank 30, and joined portions of the vacuum heat insulating materials 31 a, 31 b, 31 c In addition, an H-shaped joining means 38 is provided, and the vacuum sealing portions of the vacuum heat insulating materials 31a, 31b, 31c are folded back and inserted into the groove portions of the H-type joining means, and a plurality of vacuum heat insulating materials 31a, 31b are inserted. , 31c are joined and integrally formed so as to cover the periphery of the hot water storage tank 30 so as to be substantially cylindrical.

  And, the joint portion of the vacuum heat insulating materials 31a, 31b, 31c is provided with a joining means having an H-shaped cross section, and the vacuum sealing portion of the vacuum heat insulating materials 31a, 31b, 31c is provided in the groove portion of the H-shaped joining means 38. Since the laminate films 31a1, 31b1, 31c1 are folded and inserted, and the plurality of vacuum heat insulating materials 31a, 31b, 31c are joined and integrally formed, the vacuum heat insulating materials 31a, 31b divided into a plurality by the joining means, 31c can be integrated, and the side walls of the adjacent vacuum heat insulating materials 31a, 31b, 31c are securely adhered to each other, and the joint portions of the vacuum heat insulating materials 31a, 31b, 31c that are easily damaged are protected by the bonding means 37. The workability when the hot water storage tank 30 is covered with the vacuum heat insulating materials 31a, 31b, 31c is improved, and the vacuum heat insulation is achieved. 31a, 31b, the risk of 31c damage can be reduced.

  In the present embodiment, if the H-type joining means is a resin molded product, the laminated film 31a1 of the vacuum sealing portion of the vacuum heat insulating materials 31a, 31b, 31c is formed in the groove portion of the H-type joining means 3. , 31b1 and 31c1 when folded and inserted, the vacuum heat insulating materials 31a, 31b and 31c are less likely to be damaged, and if a fixing means for the hot water storage tank 30 is provided in the H-shaped joining means, the hot water storage tank 30 is further evacuated. The workability when covering and fixing the periphery with the heat insulating materials 31a, 31b, 31c is improved, and the risk of breakage of the vacuum heat insulating materials 31a, 31b, 31c can also be reduced.

  Moreover, the cylindrical hot water storage tank 30 is vertically long in the height direction because of the installation area, and a portion for working such as a connection portion of the hot water storage tank 30 with the water-refrigerant heat exchanger, that is, the vacuum heat insulating materials 31a, 31b, 31c. It is possible to improve workability by arranging the portions that are difficult to be disposed or easily damaged in the longitudinal direction of the hot water storage tank 30.

  INDUSTRIAL APPLICABILITY The present invention can be used as a heat pump water heater having heating and drying functions in addition to a hot water heater and a heat pump water heater having a boiling function.

The perspective view of the heat pump water heater in Embodiment 1. Configuration diagram of the heat pump water heater External view of the hot water storage tank of the heat pump water heater Longitudinal cross-sectional view of the main part of the heat pump water heater with vacuum insulation material installed in the hot water storage tank Cross-sectional view of the main part of the heat pump water heater with the vacuum insulation material installed in the hot water storage tank The principal part cross-sectional view of the heat pump water heater in Embodiment 2 of this invention Schematic diagram of a conventional heat pump water heater

Explanation of symbols

20 Refrigerant Circulation Circuit 21 Compressor 22 Water Refrigerant Heat Exchanger 23 Air Refrigerant Heat Exchanger 30 Hot Water Storage Tank 30
31 Vacuum heat insulating material 31a, 31b, 31c Vacuum heat insulating material 32 Water supply pipe 32A, 33A, 34A, 35A Connection valve 37 Bonding means 38 Bonding means

Claims (7)

A compressor, a water refrigerant heat exchanger, an air refrigerant heat exchanger, a refrigerant circulation circuit that circulates the refrigerant in a closed circuit sequentially connected to the decompression means, and a cylindrical shape that stores hot water heated by the water refrigerant heat exchanger A hot water storage tank, a connection valve for connecting a water supply pipe for supplying water to the hot water storage tank, and a housing that integrally stores the refrigerant circulation circuit and the hot water storage tank so as to insulate and keep warm around the hot water storage tank. A vacuum heat insulating material that covers the core portion with a laminate film and is vacuum-sealed to form a convex portion is disposed, and the vacuum heat insulating material is divided into a plurality of portions in the longitudinal direction of the hot water storage tank and becomes substantially cylindrical. A heat pump water heater disposed so as to cover the periphery of the hot water storage tank. The vacuum heat insulating material is divided into a plurality of parts in the longitudinal direction of the hot water storage tank, and is arranged so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical, and the adjacent vacuum heat insulating materials are alternately turned upside down. The heat pump water heater of Claim 1 arrange | positioned so that the vacuum sealing allowance part of the said vacuum heat insulating material may overlap with the core material part of the said vacuum heat insulating material which adjoins at least one part. The heat pump water heater according to any one of claims 1 to 2, wherein a side surface of the vacuum heat insulating material is inclined so that the side walls of the vacuum heat insulating materials adjacent to each other are inclined to be in close contact with each other. The vacuum heat insulating material is divided into a plurality of parts in the longitudinal direction of the hot water storage tank, and is disposed so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical, and the vacuum heat insulating material divided into a plurality of parts is joined. The heat pump water heater according to any one of claims 1 to 3, further comprising a joining means that is integrally formed. Around the hot water storage tank, the vacuum heat insulating material is divided into a plurality so as to be substantially cylindrical in the longitudinal direction of the hot water storage tank, and the adjacent vacuum heat insulating materials are alternately arranged on the front and back sides, At least a portion is disposed so that a vacuum sealing allowance portion of the vacuum heat insulating material overlaps with an adjacent core material portion of the vacuum heat insulating material, and at least a vacuum sealing allowance portion and a core material portion of the vacuum heat insulating material overlap each other The heat pump water heater according to claim 2, further comprising an adhesion unit that integrally forms a part of the heat pump. The vacuum heat insulating material is divided into a plurality of portions in the longitudinal direction of the hot water storage tank, and is disposed so as to cover the periphery of the hot water storage tank so as to be substantially cylindrical, and the upper core material portion is thickened and the lower portion is thinned. The heat pump water heater according to any one of claims 1 to 5, wherein the heat pump water heater according to any one of claims 1 to 5 is provided with a gradient so as to improve heat insulation and heat insulation performance at an upper portion of the hot water storage tank. The said vacuum heat insulating material is a vacuum heat insulating material used for the heat pump water heater etc. which gave the gradient so that the core material part of one edge part may be thickened and the other edge part may become thin.

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