JP2007183052A - Hot water storing type hot water supplier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid a large-scale work process when replacing temperature thermistors even in the case that vacuum heat insulation material which can not be cut is used for circumference of a storage tank by covering a side surface part of the storage tank with the vacuum heat insulation materials and providing a take-out part at a part near a temperature thermistor installation position of the vacuum heat insulation materials. <P>SOLUTION: The hot water supplier includes a vacuum heat insulation material 41 for covering the side surface of the storage tank 30, a vacuum heat insulation material 42 for covering a ceiling part of the storage tank 30, a heat insulation material 43 for covering a bottom part of the storage tank 30 and the plurality of temperature thermistors 40 approximately evenly provided in a height direction of the storage tank 30 and the take-out part 46 is provided on a communicating heat insulation material 45 like covering the temperature thermistors 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hot water storage type water heater that stores hot water in a hot water storage tank.

  A heat pump water heater having a conventional hot water storage tank 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 pressure reducing means are sequentially connected, and the water refrigerant heat exchanger. The hot water storage tank for storing the hot water heated in the above is housed in a single housing. Moreover, although the said hot water supply machine boiled and stored the amount of hot water used in the daytime at night, the heat dissipation loss from the hot water storage tank became a problem.

Therefore, a vacuum heat insulating material was installed around the hot water storage tank. A vacuum heat insulating material is a structure which has a single or several vacuum layer inside, Comprising: Since there is no air layer which is easy to transmit heat | fever, high heat retention is acquired (for example, refer patent document 1).
JP 2005-315480 A

  By the way, in the heat pump water heater in which the refrigerant circulation circuit and the hot water storage tank as described above are housed in one housing, the hot water storage tank is disposed on the rear side of the housing and the piping is disposed on the front side of the hot water storage tank. As a result, the maintainability of the equipment was improved.

  However, if the temperature thermistor arranged approximately evenly in the height direction of the hot water storage tank is defective and must be replaced, the piping is obstructed because the hot water storage tank is located on the rear side of the housing. The thermistor was difficult to handle.

  In addition, if vacuum insulation is placed around the hot water storage tank, remove all piping from the housing, remove the hot water storage tank from the housing, remove all vacuum insulation from the hot water storage tank, After the replacement, new vacuum insulation was installed in the hot water storage tank, and the piping was attached after the hot water storage tank was installed in the housing.

  As described above, when the thermistor is replaced, an extremely complicated work process has to be performed. It should be noted that, in the case of a heat insulating material made of glass wool, styrene or the like, it was possible to make a cut in the vicinity of the thermistor installation part and take it out partially, but the vacuum heat insulating material is insulated by forming a vacuum layer inside it. It keeps power and can't cut into the vacuum insulation itself.

  In order to solve the above-mentioned conventional problems, the hot water storage type water heater of the present invention is such that a side surface portion of a hot water storage tank is covered with a vacuum heat insulating material, and an extraction portion is provided in the vicinity of the temperature thermistor installation location of the vacuum heat insulating material. .

  According to this, even when a vacuum heat insulating material that cannot be cut is used around the hot water storage tank, a large work process is not required when the temperature thermistor is replaced.

The hot water storage type water heater of the present invention covers the side surface portion of the hot water storage tank with a vacuum heat insulating material, and is provided with a take-out portion in the vicinity of the temperature thermistor installation location of the vacuum heat insulating material. Even when the material is used around the hot water storage tank, a large work process is not required when the temperature thermistor is replaced.

  1st invention has the hot water storage tank which stores the hot water heated with the heating means, and the temperature thermistor with which the hot water storage tank was equidistantly provided in the height direction, and covers the side part of the hot water storage tank with the vacuum heat insulating material, The extraction part is provided in the temperature thermistor installation location vicinity of a vacuum heat insulating material.

  Thus, even when a vacuum heat insulating material that cannot be cut is used around the hot water storage tank, a large work process is not required when the temperature thermistor is replaced.

  Moreover, 2nd invention makes it the heat insulation material different from the material which comprises a vacuum heat insulating material especially in the extraction part of 1st invention. According to this, since a vacuum heat insulating material and a temperature thermistor do not contact directly, it can prevent that the heat insulation effect falls by the tearing of a vacuum heat insulating material. If the material of the vacuum heat insulating material is not flexible and the material of the extraction part and the material of the vacuum heat insulating material are the same, a space is generated by the uneven portion formed by the temperature thermistor, and the heat insulating material Since the effect is reduced, it is particularly effective when the material constituting the vacuum heat insulating material is not flexible.

  Further, in the third invention, particularly in the second invention, the hot water storage tank is covered with a vacuum heat insulating material and a communication heat insulating material that communicates a ceiling portion and a bottom portion of the hot water storage tank. The extraction part which consists of a heat insulation material similar to a material is provided.

  According to this, since the gap portion generated by the take-out portion and the vacuum heat insulating material can be reduced and pasted together, the overall heat retention effect is not lowered, and heat dissipation loss can be suppressed.

  In addition, the fourth aspect of the invention is heated by the water refrigerant heat exchanger, the refrigerant circulation circuit for circulating the refrigerant in the closed circuit in which the compressor, the water refrigerant heat exchanger, the air refrigerant heat exchanger, the decompression means are sequentially connected, and the water refrigerant heat exchanger. A hot water storage tank that stores hot water, a connection valve that connects a water supply pipe that supplies water to the hot water storage tank, and a housing that integrally stores the refrigerant circulation circuit and the hot water storage tank. It is installed, a connection valve is arranged at the front lower part of the hot water storage tank, the side surface part of the hot water storage tank is covered with a vacuum heat insulating material, and an extraction portion is provided in the vicinity of the temperature thermistor installation location of the vacuum heat insulating material.

  According to this, even when a vacuum heat insulating material that cannot be cut is used around the hot water storage tank, a large work process is not required when the temperature thermistor is replaced.

  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 front view showing an internal arrangement of the heat pump water heater, and FIG. 3 shows a hot water storage tank and a heat insulating material provided in the hot water storage tank. FIG.

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

  The heat pump water heater according to the present 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.

  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.

  On the lower surface of the support plate 12, a chassis support leg 13 for installing the chassis 10 on the installation surface is provided.

  In addition, tank support legs 31 are provided below the hot water storage tank 30 to connect to the support plate 12.

  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.

  Next, the configuration of the hot water storage tank 30 will be described with reference to FIG. The hot water storage tank 30 is covered with four heat insulating materials, a vacuum heat insulating material 41 covering the side surface of the hot water storage tank 30, a heat insulating material 42 covering the ceiling portion of the hot water storage tank 30, and a heat insulating material covering the bottom portion of the hot water storage tank 30. A material 43, a plurality of temperature thermistors 40 arranged substantially evenly in the height direction of the hot water storage tank 30, and an extraction portion 46 are provided on the communication heat insulating material 45 so as to cover the temperature thermistors 40. The heat insulating materials 42, 43, 45 and 46 other than the vacuum heat insulating material 41 are made of styrene or glass wool.

  During maintenance, the temperature thermistor 40 can be taken out of the take-out portion 46 and replaced.

  In addition, as shown in FIG. 4, the extraction part 46 may have a heat insulation effect as a structure in which one or more heat insulating materials of the same material as the communication heat insulating material 45 are packed, or may be configured to be openable and closable. Any other configuration may be used as long as it covers the temperature thermistor 40.

In addition to the forms shown in FIGS. 3 and 4, for example, as shown in FIG. 5, an extraction portion 46 may be provided in the middle of the vacuum heat insulating material 41 and at the place where the temperature thermistor 40 is installed. If such an extraction portion 46 is formed at the time of forming the material 41, the temperature thermistor 40 can be easily taken out and replaced or the like.

  As described above, according to the present embodiment, since the temperature thermistor 40 can be taken out through the take-out portion 46 at the time of maintenance, even when a vacuum heat insulating material that cannot be cut is used around the hot water storage tank, There is no need for a large work process when replacing the thermistor.

  Moreover, by making the extraction part 46 into a styrene or glass wool instead of a vacuum heat insulating material, even if the temperature thermistor 40 and the extraction part 46 come into contact with each other, the performance is not affected, and the heat insulation effect is reduced due to the breakage of the vacuum heat insulating material. Can be prevented.

  Moreover, by setting it as the structure which provides the extraction part 46 in the communication heat insulating material 45 like FIG. 3, it becomes difficult to produce the clearance gap by the extraction part 46, and can suppress a heat dissipation loss, without reducing a heat retention effect. In addition, as shown in FIG. 4, the extraction part 46 may be provided in the middle of the vacuum heat insulating material 41. However, since the vacuum heat insulating material 41 is relatively inflexible, it is between the vacuum heat insulating material 41 and the extraction part 46. It becomes easy to produce a gap.

  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. Further, the present invention is not limited to a water heater using a heat pump as a heat source, but can be applied to a water heater using an electric heater as a heat source.

The perspective view of the hot water storage type water heater of this Embodiment Configuration diagram of this embodiment Detailed view of hot water storage tank of this embodiment Detailed view of hot water storage tank of this embodiment Detailed view of hot water storage tank of this embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Housing body 12 Support plate 13A, 13B, 13C, 13D, 13E Housing support leg 20 Refrigerant circulation circuit 21 Compressor 22 Water refrigerant heat exchanger 23 Air refrigerant heat exchanger 30 Hot water storage tank 30A Center of gravity 30B Virtual line 32 Water supply pipes 32A, 33A , 34A, 35A Connection valve 40 Temperature thermistor 41 Vacuum heat insulating material 42, 43 Heat insulating material 45 Communication heat insulating material 46 Extraction part

Claims (4)

In a water heater having a hot water storage tank for storing hot water heated by a heating means and a temperature thermistor provided substantially uniformly in a height direction of the hot water storage tank, a side surface portion of the hot water storage tank is covered with a vacuum heat insulating material, and the vacuum A hot water storage type hot water supply apparatus in which an extraction portion is provided in the vicinity of the temperature thermistor installation location of the heat insulating material. The hot water storage type hot water heater according to claim 1, wherein the take-out part is made of a heat insulating material different from a material constituting the vacuum heat insulating material. The hot water storage tank is covered with a vacuum heat insulating material and a communication heat insulating material that communicates the ceiling and bottom of the hot water storage tank, and an extraction portion made of the same heat insulating material as the communication heat insulating material is provided in the middle of the communication heat insulating material. The hot water storage type water heater according to claim 2. A refrigerant circulation circuit for circulating the refrigerant in a closed circuit in which a compressor, a water refrigerant heat exchanger, an air refrigerant heat exchanger, a decompression means are sequentially connected, and a hot water storage tank for storing hot water heated by the water refrigerant heat exchanger; A connecting valve for connecting a water supply pipe for supplying water to the hot water storage tank, and a housing for integrally housing the refrigerant circulation circuit and the hot water storage tank, wherein the hot water storage tank and the compressor are installed in the left-right direction. The connecting valve is disposed in a lower front portion of the hot water storage tank, a side surface portion of the hot water storage tank is covered with a vacuum heat insulating material, and an extraction portion is provided in the vicinity of the temperature thermistor installation location of the vacuum heat insulating material. Hot water storage water heater.