JP5313318B2 - Tank unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank unit which can secure the mounting space of a reheating heat exchanger and pumps to constitute vibration members, which are housed in a unit body together with a hot water storage tank, and whose hot water temperature stratification in the hot water storage tank is hardly affected even when they are mounted on the tank. <P>SOLUTION: In this tank unit 12, the hot water storage tank 22 for storing hot water heated by a heat pump cycle therein, and a heat-insulation material 52 which covers the hot water storage tank 22 for keeping the hot water in the tank hot are housed in a unit body 12A. The heat-insulation material 52 is formed by a foamed heat insulation material in which a holder 52A for holding pumps 27, 32 thereon is embedded through a foam process, wherein the pumps 27, 32 are installed in pipings 26, 28 connected to the hot water storage tank 22. The foamed heat-insulation material 52 is nearly equal in height to the hot water storage tank 22, and covers a side portion of the tank 22, and the holder 52A is located at the lower portion of the heat-insulation material 52. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

The present invention relates to a tank unit provided in a unit main body by covering with a heat insulating material for keeping warm a hot water storage tank for storing hot water heated by a heat pump cycle.

  Conventionally, in this type of hot water supply apparatus, in order to keep the hot water storage tank warm and to insulate, a surface heat insulating material such as glass wool is wound around the outer surface of the hot water storage tank (for example, see Patent Document 1) And the thing (for example, refer patent document 2) of the structure which covers the whole outer side of a hot water storage tank using the foaming shaping | molding heat insulating material dividedly formed by four front and back is known.

By the way, the tank unit is equipped with various parts such as a hot water circulation pump, a bath water circulation pump, a reheating circulation pump, and a reheating heat exchanger. In general, these parts are attached directly to the hot water storage tank by spot welding the mounting brackets for attaching them to the hot water storage tank, or these parts are attached to the frame body by installing the mounting frame inside the tank unit. It was.
JP-A-7-243705 JP 2002-310511 A

  However, in the former, if spot welding is defective, hot water may leak from the hot water storage tank, and vibrations such as pumps are directly attached to the hot water storage tank, affecting the hot water storage tank, The level of the temperature of the hot water in the hot water storage tank tends to collapse and become uniform, which is not preferable. In the latter case, it is expensive to provide an attachment frame for attaching various components, and it is necessary to secure the attachment space.

  Therefore, the present invention has been made in view of the above-described circumstances, and can secure a mounting space for mounting various components disposed therein, and the level of the temperature of the hot water in the hot water storage tank does not collapse. An object of the present invention is to provide a tank unit that can be attached to a tank.

Therefore, according to a first aspect of the present invention , there is provided a tank unit in which a hot water storage tank for storing hot water heated by a heat pump cycle is covered with a heat insulating material and provided in the unit main body , wherein the heat insulating material is provided in the unit main body. Foam insulation in which a support for attaching a heat exchanger for reheating water and a support for a recirculation pump for attaching a recirculation pump are embedded in a heat insulation portion covering the side surface of the hot water storage tank in a foaming process. The reheating heat exchanger composed of a material and fixed to the support is housed in the heat insulating material and a load is supported by the heat insulating material, and the recirculation circulation pump is supported by the heat insulating material. And vibration and vibration noise are reduced .
Further, in the second invention, the foam heat insulating material has a height substantially equal to the height of the hot water storage tank and covers a side portion of the hot water storage tank, and the recirculation pump support for reheating is disposed below the heat insulating material. It is located .

    According to the present invention, it is possible to secure a mounting space for mounting a pump which is housed in the unit body together with the tank and serves as a vibration member, and the height of the foam heat insulating material for keeping the tank warm is approximately the same as the height of the tank. The tank unit that covers the side of the tank and the pump support is positioned below the heat insulating material, so that even when these are attached to the hot water storage tank, the level of the temperature of the hot water in the hot water storage tank is not easily destroyed. Can be provided.

It is explanatory drawing explaining the installation state of the hot water supply apparatus of this invention. It is a schematic block diagram of the whole structure similarly. It is a perspective view of the hot water storage tank unit of the state which removed the unit main body and coat | covered with the heat insulating material for convenience of explanation. It is a side view which can cut a part of hot water storage tank unit longitudinally for convenience of explanation.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. First, an embodiment of a hot water supply apparatus including a hot water storage tank unit according to the present invention will be described. FIG. 1 is an explanatory diagram for explaining the installation state of the hot water supply apparatus of the present invention, FIG. 2 is a schematic configuration diagram of the overall configuration, and FIG. FIG. 4 is a perspective view of the unit, and FIG. 4 is a side view in which a part of the hot water storage tank unit can be vertically cut for convenience of explanation.

  In FIG. 1, a heat pump type hot water supply apparatus 10 is composed of a heat pump unit 11 and a hot water storage tank unit 12 connected to the heat pump unit 11 by piping. The heat pump unit 11 and the hot water storage tank unit 12 are usually outdoors. It is assumed that it is installed on a veranda on a higher floor such as an apartment house. Further, the heat pump unit 11 and the hot water storage tank unit 12 may be integrated into a common exterior case.

  Next, referring to FIG. 2, the heat pump unit 11 includes a variable capacity compressor 13 such as a rotary two-stage compressor, a refrigerant-to-water heat exchanger 14 as a heating device, and an electric motor in a unit main body 11A. A decompression device 15 such as an expansion valve, an evaporator 16, a heat exchange blower 19 that ventilates the evaporator 16 to exchange heat with air, an accumulator 17, and a heat pump side control device 18 are housed. The compressor 13, the radiator 14A constituting the refrigerant-to-water heat exchanger 14, the pressure reducing device 15, the evaporator 16, and the accumulator 17 are connected in a ring shape by a refrigerant pipe 20, and carbon dioxide is used as a refrigerant. A heat pump cycle X that compresses to a supercritical pressure by the compressor 13 is configured. The refrigerant-to-water heat exchanger 14 includes the radiator 14A and the heat receiver 14B.

  The hot water storage tank unit 12 includes a vertically long hot water storage tank 22 made of a stainless steel plate, a water supply pipe 23 connected to the bottom of the hot water storage tank 22, a water supply opening / closing valve 24, a branch, in a unit body 12A having a U-shaped transverse plane. Water supply pipe 25, hot water storage pipe 26, hot water circulation pump 27, reheating pipe 28, reheating heat exchanger 29, bath water pipe 30, bath water circulation pump 31, reheating circulation pump 32, hot water supply It accommodates a pipe 33, a mixing valve 34, a bath hot water on / off valve 35, a tank side control device 36, and the like. A pressure relief valve 21 is connected to the hot water supply pipe 33.

  The outlet 26 A of the hot water storage pipe 26 is connected to the bottom of the hot water storage tank 22, and the inlet 26 B of the hot water storage pipe 26 is connected to the top of the hot water storage tank 22. The outlet 28A of the reheating pipe 28 and the hot water supply pipe 33 are connected to the top of the hot water storage tank 22, respectively.

  37 is a communication line for connecting the heat pump side control device 18 and the tank side control device 36, 38 is a kitchen remote controller, 39 is a bath remote controller, and these remote controllers 38 and 39 are tank side control devices. 36 is connected to the wiring. Reference numeral 40 denotes a bath tub.

  Here, when filling the bath tub 40 with hot water, when a bath hot water switch (not shown) of the bath remote controller 39 is pressed, the hot water tank 22 is pushed out to the hot water supply pipe 33. The hot water flowing into the mixing valve 34 is mixed with tap water supplied from the water supply pipe 23 and the branch water supply pipe 25, and hot water having a preset temperature is poured into the bathtub 40 through the hot water supply pipe 41. When the water is poured and a predetermined amount of water is poured, the filling is completed.

  As described above, when hot water is supplied to the use section such as the bathtub 40, the hot water in the hot water storage tank 22 is consumed, and the hot water layer in the hot water storage tank 22 is reduced. Hot water is stored only in the upper part of the hot water storage tank 22, and the intermediate part and lower part in the hot water storage tank 22 are in a state where hot water or water having a low temperature is stored, and a hot water layer of each temperature is formed.

  Next, hot water boiling operation will be described. First, when the compressor 13 of the heat pump cycle X is started by starting the operation of the heat pump unit 11, the refrigerant of carbon dioxide is compressed in two stages by the compressor 13, and the supercritical pressure that is compressed and discharged by the compressor 13 is high. The high-pressure liquid refrigerant dissipates heat in the radiator 14A, exchanges heat with water flowing through the heat receiver 14B, and heats the water.

  The refrigerant whose temperature has decreased due to heat dissipation by the radiator 14A is reduced in pressure by the decompression device 15 and becomes low pressure, and then flows into the evaporator 16, where it absorbs heat from the air and evaporates. It becomes a low-pressure gaseous refrigerant, flows into the accumulator 17, and is sucked into the compressor 13 from the accumulator 17 and compressed again.

With the start of operation of the heat pump unit 11, the hot water circulation pump 27 in the hot water storage tank unit 12 is activated, and the operation of the circulation pump 27 causes the low-temperature or normal-temperature water in the lower part of the hot water storage tank 22 to exit from the outlet. It flows into the hot water storage pipe 26 from the section 26A, flows to the heat receiver 14B through the hot water circulation pump 27, and is heated by exchanging heat with the high-temperature and high-pressure refrigerant flowing in the radiator 14A. The hot water heated by the heat receiver 14B flows into the upper portion of the hot water storage tank 22 from the inlet portion 26B, and hot water of 80 ° C. or higher is stored in the hot water storage tank 22 as the boiling operation time elapses. When the amount of hot water increases gradually and the hot water layer reaches a certain position in the lower part of the hot water storage tank 22, the boiling operation is completed.

In addition, by operating the bath water circulation pump 31 and the recuperation circulation pump 32, the hot water in the hot water storage tank 22 and the hot water in the bathtub 40 are heat-exchanged by the reheating heat exchanger 29, and the hot water in the bathtub 40 is heated. You can also chase.
Next, FIG. 3 and FIG. 4 will be described. The hot water storage tank 22 has four foamed polystyrene heat insulating materials 50, 51 for maintaining and insulating the hot water storage tank 22 at the upper, lower and peripheral sides of the outer shell. It is covered so as to be surrounded by 52A and 52B. Then, after covering the peripheral side portion of the hot water storage tank 22, a covering state is maintained using a fastener (not shown) such as a metal wire. And the heat insulating material 52A covering the front peripheral side portion is formed by embedding four supporting members 53 in the foaming process for attaching components to be described later disposed in the unit main body 12A in the foaming process. .

  Of the four support tools 53, the uppermost support tool 53 is embedded in a recess formed in the heat insulating material 52A, and the reheating heat exchanger 29 is housed in the recess. And fixed to the support 53 through screws or bolts. In addition, a recirculation circulation pump 32, a hot water recirculation pump 27, and a bath water recirculation pump 31 are attached and fixed to other supports 53 via screws and bolts, respectively.

As described above, the support for attaching the components arranged in the unit main body 12A, that is, the reheating heat exchanger 29, the recirculation pump 32, the hot water recirculation pump 27, and the bath water recirculation pump 31. Since the tool 53 is embedded in the foaming process of the expanded polystyrene heat insulating material 52A, it is not necessary to arrange the mounting frame in the tank unit again, and the mounting space can be secured without incurring high costs. Since a heavy object such as the heat exchanger 29 can be stored in the heat insulating material 52 and the load can be supported by the whole heat insulating material 52A, it is possible to prevent excessive stress from being applied to the hot water storage tank 22, and further vibration Since the recirculation pump 32 for reheating, the recirculation pump 27 for hot water storage, and the recirculation pump 31 for bath water are attached to the heat insulating material 52A, the hot water storage tank 22 is vibrated. Because it is reduced as much as possible to influence also reduces vibration sound can be prevented that break the temperature hierarchy of the hot water in the hot water storage tank 22.

Reference numeral 45 denotes a plurality of support legs fixed on the bottom surface 12B of the unit main body 12A, and supports the hot water storage tank 22. A plurality of support stands 46 are fixed to the bottom of the bottom surface 12B of the unit main body 12A.
And on the left side of the front part of the unit main body 12A, a printed circuit board on which various electronic components such as a microcomputer constituting the tank side control device 36 are mounted in order from the top, a test operation switch connected to the printed circuit board, Board operation unit provided with a power contract setting switch or the like selected according to the contract type related to the time zone / charge with the electric power company, a breaker connected to this board operation unit and also connected to a 200 volt power source, kitchen Terminal block to which a communication line connected to the remote controller for bath 38 and the remote controller for bath 39, a power line from the outside of the unit body 12A, etc. are connected, a circulation pump 32 for reheating, a circulation pump 27 for hot water storage, a circulation for bath water The pumps 31 and the like are gathered and arranged in a biased manner.

  A door body 59 that can be opened and closed is provided at the front opening of the front unit main body 12A such as the board operation unit or the terminal block, and the front opening of the unit main body 12A on the right side of the board operation unit or the terminal block. The other door body 60 that can be opened and closed is provided. Accordingly, left and right vertically long door bodies 59 and 60 capable of opening and closing the front opening of the unit main body 12A are provided, and one door body 59 for opening and closing the front opening in front of the substrate operation section is disposed on the other. The area is about 1/3 of the door body 60 and is configured to be small.

The door body 59 is provided with an operation door 61 that can be opened and closed at a position corresponding to the breaker so that the breaker can be operated, and the door body 60 can be operated with the pressure relief valve 21. An operation door 62 that can be opened and closed is provided at a position corresponding to the pressure relief valve 21.
Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the various alternatives and modifications described above without departing from the spirit of the present invention. Or a modification is included.

X heat pump cycle 11 heat pump unit 12 hot water storage tank unit 12A unit body 22 hot water storage tank 27 hot water circulation pump 31 hot water circulation pump 32 recirculation circulation pump 50, 51, 52A, 52B Styrofoam insulation 53 support

Claims (2)

In a tank unit that covers a hot water storage tank that stores hot water heated by a heat pump cycle with a heat insulating material and is provided in the unit body ,
The hot-water storage tank includes a support for attaching a heat exchanger for replenishing bath water disposed in the unit body and a support for a recirculation pump for attaching a recirculation pump. The heat exchanger for reheating, which is made of a foam heat insulating material embedded in the heat insulating portion covering the side surface of the heat sink and fixed to the support, is housed in the heat insulating material and supports the load by the heat insulating material. The tank unit is characterized in that the recirculation pump is driven by the heat insulating material to reduce vibration and vibration noise . The foam heat insulating material has a height substantially equal to the height of the hot water storage tank and covers a side portion of the tank, and the recirculation pump support for reheating is located below the heat insulating material. The tank unit according to claim 1.