JP2010007931A - Heat pump water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater having a small and thinned size, improved conveyance performance and ease of installation work and high efficiency, to flexibly respond to even in a narrow installation environment such as a narrow and small place and collective housing. <P>SOLUTION: In the heat pump water heater, a heat pump part 2 for storing a refrigerant circulation circuit comprising a refrigerant compression means 3, a water refrigerant heat exchange means 4, a refrigerant decompression means 5 and a refrigerant evaporation means 6 and a heat storage part 20 constituted by a heat storage means 21 comprising a latent heat storage material and a water passage means (not shown in the figure) are stored in the same casing 1. The heat pump part 2 can be separated from the heat storage part 20. Thus, during conveyance and installation work, the weight can be reduced, improving conveyance and installation performance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat pump water heater in which a heat pump unit composed of a refrigeration cycle and a heat storage unit composed of heat storage means and water channel means are stored in one casing.

  As a conventional integrated heat pump water heater of this type, there is one shown in FIGS. 8 and 9 (see, for example, Patent Document 1).

  FIG. 8 is a schematic perspective view of a conventional integrated heat pump water heater described in Patent Document 1, and FIG. 9 is a cross-sectional view and a front view of the heat storage means of the identical heat pump water heater.

  In FIG. 8, the conventional integrated heat pump water heater mainly includes a refrigerant compression means 3, a water refrigerant heat exchange means 4, a refrigerant decompression means (not shown), a refrigerant evaporation means 6, and a blower means 7. The heat storage unit 20 configured by the unit 2, the heat storage unit 21, and the water channel unit 22 described later is housed in one casing 1.

FIG. 9 shows an example of a schematic configuration diagram when the heat storage material is composed of a latent heat storage material in the heat storage means 21, and the heat storage means 21 is in a capsule shape in the water channel means 22. The heat storage material holding means 23 is hermetically sealed and integrated.
JP 2007-218462 A

  However, in the configuration of the conventional integrated heat pump water heater, the weight increases, and the transportability and installation workability become problems. The heat storage means 21 needs to secure a minimum capacity from the risk of running out of hot water, and a corresponding latent heat storage material is mounted to secure it. Therefore, it is inevitable that the weight becomes heavier than the water is stored in the heat storage means 21. Therefore, the weight of the heat pump water heater itself also increases.

  Further, the heat storage means 21 using the latent heat storage material has a structure in which a capsule-like latent heat storage material holding means 23 is disposed in a water seal and integrated, so that there are problems in the maintainability and assembly of the heat storage means 21. Have. Moreover, due to the temperature characteristics of the latent heat storage material and the miniaturization of the heat storage means 21, there is also a problem of adversely affecting the system efficiency of the integrated heat pump water heater.

  The present invention solves the above-mentioned conventional problems, improves transportability and installation workability, improves the assemblability and maintainability of the heat storage means having the latent heat storage material, and is efficient, compact or An object of the present invention is to provide a heat pump water heater having a latent heat storage material in a thin heat storage means.

  In order to solve the above-described conventional problems, a heat pump water heater of the present invention includes a heat pump unit formed by refrigerant compression means, water refrigerant heat exchange means, refrigerant decompression means, refrigerant evaporation means, and heat storage means comprising a latent heat storage material. And a heat storage part formed by water channel means, wherein the heat pump part and the heat storage part are housed in the same casing, and the heat pump part and the heat storage part are configured to be separable. It can reduce the weight during transportation and installation work, and can improve transportability and installation.

  The heat pump water heater of the present invention can improve efficiency, can be reduced in size and thickness, and can improve transportability and installation workability.

  1st invention is equipped with the heat pump part formed by the refrigerant | coolant compression means, the water refrigerant | coolant heat exchange means, the refrigerant | coolant decompression means, the refrigerant | coolant evaporation means, the heat storage means which consists of a latent heat storage material, and the heat storage part formed by the water channel means. The heat pump unit and the heat storage unit are housed in the same casing, and the heat pump unit and the heat storage unit are configured to be separable. It can be reduced and transportability and installation can be improved.

  In the second invention, in particular, the heat storage means of the first invention is configured by laminating the heat storage material holding means holding the latent heat storage material and the water channel means, and the heat storage material holding means is divided into a plurality of parts. By providing, the maintainability and assembly of the heat storage means can be improved. Further, the capacity of the heat storage means can be easily changed, the degree of freedom in designing the outer dimensions of the heat storage means can be improved, and the design of a smaller and thinner heat pump water heater can be facilitated.

  In the third invention, in particular, the heat pump unit of the first or second invention is provided with the second refrigerant decompression means having a power generation function different from the refrigerant decompression means, and the input is reduced by the generated power. It is possible to improve the efficiency of the heat pump water heater.

  In the fourth invention, in particular, the second refrigerant decompression means and the refrigerant compression means of the third invention are integrated directly or via a third member, and the vibration isolating means is disposed in the integrated unit. A refrigerant pipe connecting the refrigerant compression means and the second refrigerant decompression means having a power generation function, and the other, a refrigerant compression means, a vibration of the refrigerant pipe connected to the second refrigerant decompression means having a power generation function, and Stress can be reduced.

  In the fifth invention, in particular, the heat pump part according to any one of the first to fourth inventions uses a refrigerant whose pressure has been increased to a critical pressure or higher. The refrigerant flowing through the water refrigerant heat exchange means is refrigerant compression means. Since the pressure is higher than the critical pressure, condensation does not occur even if the temperature is lowered due to heat deprived by the water refrigerant heat exchange means. Therefore, it becomes easy to form a temperature difference between the refrigerant and water in the entire area of the water / refrigerant heat exchange means, and the heat exchange efficiency can be increased.

  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)
FIG. 1 is a schematic configuration diagram of an integrated heat pump water heater in Embodiment 1 of the present invention, and FIG. 2 is a diagram illustrating a state in which a heat pump unit and a heat storage unit of the same heat pump water heater are separated. In addition, about the same part as the said conventional integrated heat pump water heater, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In FIG. 1, the integrated heat pump water heater in the present embodiment includes a refrigerant compression means 3, a water refrigerant heat exchange means 4, a refrigerant decompression means 5, a refrigerant evaporation means 6, and a blower means 7 constituting a refrigerant circulation circuit. The heat pump unit 2 is arranged on the left side, and is different from only water that stores heat generated from the refrigerant circulation circuit. The heat storage unit 21 made of a latent heat storage material and the heat storage unit 20 made of water channel means (not shown) are on the right side. Is arranged.

As shown in FIG. 1, the integrated heat pump water heater in the present embodiment accommodates and integrates the heat pump unit 2 and the heat storage unit 20 in one casing 1, or as shown in FIG. 2 and the heat storage unit 20 can be easily separated.

  As described above, according to the present embodiment, the heat pump unit 2 and the heat storage unit 20 are separated from each other at the time of transporting or installing the integrated heat pump water heater, thereby reducing the handling weight, transportability, and installation. Can greatly improve the performance. In addition, more flexible installation is possible in a narrow installation environment.

  In addition, if the refrigerant | coolant pressurized more than the critical pressure is used for the heat pump part 2, the refrigerant | coolant which flows through the water refrigerant | coolant heat exchange means 4 will be pressurized more than a critical pressure by the refrigerant | coolant compression means 3, Therefore Even if the heat is taken away by the exchange means 4 and the temperature falls, it does not condense. Therefore, it becomes easy to form a temperature difference between the refrigerant and water in the entire area of the water / refrigerant heat exchange means 4, and the heat exchange efficiency can be increased.

(Embodiment 2)
FIG. 3 is an overall view of an integrated heat pump water heater in Embodiment 2 of the present invention, and FIG. 4 is a diagram showing a state in which the heat pump unit and the heat storage unit of the identical heat pump water heater are separated. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 3 and 4, the integrated heat pump water heater in the present embodiment is configured so that the heat pump unit 2 and the heat storage unit 20 can be separated, and when the heat pump unit 2 and the heat storage unit 20 are integrated. The heat pump unit 2 is arranged above the heat storage unit 20.

  By the said structure, the weight at the time of conveyance of an integrated heat pump water heater and an installation operation can be reduced similarly to the said Embodiment 1, and a conveyance property and installation property can be improved. Further, a more flexible arrangement is possible in a narrow installation environment.

(Embodiment 3)
FIG. 5 is a cross-sectional view and a schematic configuration diagram of an integrated heat pump water heater in Embodiment 3 of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, the integrated heat pump water heater in the present embodiment arranges the heat pump unit 2 and the heat storage unit 20 on the left and right sides, and the heat storage unit 21 constituting the heat storage unit 20, the water channel unit 22 and the latent heat storage unit. The heat storage material holding means 23 holding the material is configured to have a laminated structure. Moreover, in this Embodiment, the thermal storage means 21 is divided into 3 up and down. Note that the number of divisions of the heat storage means 21 is not limited to three divisions.

  Since the integrated heat pump water heater in the present embodiment is configured as described above, the heat storage capacity and the external dimensions can be easily changed by the number of layers and the number of divisions of the heat storage means 21, and the integrated heat pump. Assembling and maintenance of the water heater can be improved, and more flexible heat storage capacity and installability can be developed for various market needs.

(Embodiment 4)
FIG. 6 is a schematic configuration diagram of the integrated heat pump water heater in Embodiment 4 of the present invention, and FIG. 7 is an integrated configuration diagram of the refrigerant compression means and the second refrigerant decompression means of the same body type heat pump water heater. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

In the heat pump section 2 of the integrated heat pump water heater in the present embodiment, as shown in FIG. 6, the refrigerant compression means 3 and the second refrigerant pressure-reducing means 8 having a power generation function are integrated means as a third member. 9 is integrated. The refrigerant compression means 3 and the second refrigerant decompression means 8 may be directly connected and integrated without using the integration means 9.

  In FIG. 7, the refrigerant compression means 3 and the second refrigerant decompression means 8 having a power generation function are connected by a refrigerant pipe 11, and the refrigerant compression means 3 and the second refrigerant decompression means 8 having a power generation function are The fixing means 13 is fixed to and integrated with the integration means 9 as the third member. This is because both the refrigerant compression means 3 and the second refrigerant decompression means 8 having a power generation function are vibration generators, and therefore reduce vibration stress acting on the refrigerant pipe 11 connecting them. Further, a refrigerant pipe 12 from the other is connected to each of the refrigerant compression means 3 and the second refrigerant decompression means 8 having a power generation function.

  The integration unit 9 is supported by the vibration isolation unit 10 in a vibration isolation structure. This is for reducing the vibration stress of the other refrigerant pipes 12 connected to them. As a result, the second refrigerant decompression means 8 having the power generation function can be mounted, so that power consumption can be reduced by the amount of power generation, and a highly efficient integrated heat pump water heater can be provided.

  As described above, the integrated heat pump water heater according to the present invention can be reduced in size and thickness, and can achieve high efficiency. In addition to the integrated heat pump water heater, an air conditioner or other heat cycle device Can be developed.

Schematic configuration diagram of an integrated heat pump water heater in Embodiment 1 of the present invention The figure which shows the state which isolate | separated the heat pump part and the heat storage part of the same body type heat pump water heater Overall view of integrated heat pump water heater in Embodiment 2 of the present invention The figure which shows the state which isolate | separated the heat pump part and the heat storage part of the same body type heat pump water heater (A) Sectional drawing of integrated heat pump water heater in Embodiment 3 of this invention (b) Schematic block diagram of identical body type heat pump water heater Schematic block diagram of an integrated heat pump water heater in Embodiment 4 of the present invention Integral configuration diagram of refrigerant compression means and second refrigerant decompression means of the same body type heat pump water heater Schematic perspective view of a conventional integrated heat pump water heater (A) Cross-sectional view of the heat storage means of the identical heat pump water heater (b) Front view of the heat storage means

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Heat pump part 3 Refrigerant compression means 4 Water refrigerant heat exchange means 5 Refrigerant decompression means 6 Refrigerant evaporation means 7 Blower means 8 Second refrigerant decompression means 9 Integration means (third member)
DESCRIPTION OF SYMBOLS 10 Anti-vibration means 11, 12 Refrigerant piping 13 Fixing means 20 Thermal storage part 21 Thermal storage means 22 Water channel means 23 Thermal storage material holding means

Claims (5)

A heat pump unit formed by a refrigerant compression unit, a water refrigerant heat exchange unit, a refrigerant decompression unit, a refrigerant evaporation unit, a heat storage unit made of a latent heat storage material, and a heat storage unit formed by a water channel unit, the heat pump unit and A heat pump water heater, wherein the heat storage unit is housed in the same casing, and the heat pump unit and the heat storage unit are separable. The heat storage means is constituted by stacking a heat storage material holding means holding a latent heat storage material and a water channel means, and the heat storage material holding means is divided into a plurality of parts and provided. Heat pump water heater. The heat pump water heater according to claim 1 or 2, wherein a second refrigerant decompression unit having a power generation function different from the refrigerant decompression unit is provided in the heat pump unit. 4. The heat pump according to claim 3, wherein the second refrigerant decompression unit and the refrigerant compression unit are integrated directly or via a third member, and a vibration isolation unit is disposed in the integrated unit. Water heater. The heat pump water heater according to any one of claims 1 to 4, wherein a refrigerant whose pressure is raised to a critical pressure or more is used for the heat pump unit.