JP2010025425A - Heat accumulator and heat pump water heater equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small and highly efficient heat accumulator improving use rate of a heat storage agent. <P>SOLUTION: A heat storage body 7 is sandwiched by heat storage/release panels 4 having a fluid flow passage and they are sequentially laminated. The heat storage body 7 is brought into close contact with the heat storage/release panels 4. Since the heat storage body 7 is sandwiched by the heat storage/release panels 4 having the fluid flow passage and laminated, the heat storage agent 2 can be filled with high density, heat can be highly efficiently taken in/out to/from the heat storage agent 2 and the size of a heat storage tank can be reduced. Thus, the use rate of the heat storage agent 2 can be improved, so as to provide the heat accumulator having the compact heat storage tank and a heat pump water heater equipped with the heat accumulator. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat storage device used for heating or the like and a heat pump water heater provided with the same.

  Conventionally, in this type of heat storage device, a heat storage tank is filled with a heat storage agent, heat storage in the heat storage agent, and a heat exchanger for taking out heat is immersed in the heat storage agent from the open upper surface of the heat storage layer. (For example, see Patent Document 1).

FIG. 9 shows a conventional heat storage device described in Patent Document 1. As shown in FIG. 9, the heat storage tank 1, the heat storage agent 2, and the heat exchanger 3 are configured.
JP-A-2005-24144

  However, in the conventional configuration, the heat storage tank 1 is filled with the heat storage agent 2, and the heat exchanger 3 is immersed in the heat storage agent 2 from the opened upper surface, so that necessary heat storage amount and heat exchange capability are ensured. A height of more than a certain level is required, and there is a problem that the size cannot be reduced to a certain extent.

  This invention solves the said conventional subject, and it aims at improving the utilization factor of a thermal storage agent and providing the compact thermal storage apparatus of a thermal storage tank.

  In order to solve the conventional problem, the heat storage device of the present invention has a structure in which the heat storage body and the heat storage and heat dissipation panel are in close contact with each other by sequentially stacking the heat storage body with a heat storage and heat dissipation panel having a fluid flow path. By sandwiching and stacking the heat storage body with a heat storage and heat dissipation panel having a fluid flow path, the heat storage agent can be filled with high density, and heat can be transferred to and from the heat storage agent with high efficiency. In addition, the heat storage tank can be downsized.

  ADVANTAGE OF THE INVENTION According to this invention, the utilization factor of a thermal storage agent can be improved and the compact thermal storage apparatus of a thermal storage tank can be provided.

  The first invention is a structure in which a heat storage body is sandwiched in order by a heat storage and heat dissipation panel having a fluid flow path, and the heat storage body and the heat storage and heat dissipation panel are brought into close contact with each other. By sandwiching and laminating between the heat storage and heat-dissipating panels, the heat storage agent can be filled with high density, heat can be taken in and out of the heat storage agent with high efficiency, and the heat storage tank can be downsized. .

  The second invention is a structure in which a protrusion is formed on the surface of the heat storage and heat dissipation panel to hold the heat storage body, and the heat storage heat dissipation panel having a fluid flow path is used to hold the heat storage body. It can be filled with high density, heat can be put into and taken out of the heat storage agent with high efficiency, and a heat storage tank is not required, and downsizing is possible.

According to a third aspect of the present invention, the heat storage and heat dissipation panel is formed of an aluminum extrusion mold material provided with a corrosion prevention film on the outer surface. This prevents corrosion of the aluminum mold from the material, and realizes a highly efficient heat storage device that is lightweight and highly reliable.

  According to a fourth aspect of the present invention, a heat storage agent is formed by storing a heat storage agent in a thin-film bag-like container, and the metal and the heat storage agent that constitute the heat storage / radiation panel or the flow path plate are prevented from coming into direct contact. Thus, corrosion of the metal can be prevented and ions eluted from the metal can be prevented from deteriorating the heat storage agent.

  5th invention provided the convex part for penetration which has a through-hole and the convex part for fixation which forms a female screw in the type | mold side surface of the thermal storage / dissipation panel, and was set as the structure which fastens the said thermal storage / radiation panel and flow-path flat plate Then, the heat storage and heat dissipation panels are stacked, and bolts are fastened to the female screws of the fixing convex portions through the bolts that are fastening bodies in the through holes of the through convex portions, and are stacked without using special members. It can be firmly fixed between the heat storage and heat dissipation panels.

  The sixth invention is provided with a heat storage agent temperature detection means, a heat storage agent vibration device, and a control device for controlling the operation of the heat storage agent vibration device based on the output of the heat storage agent temperature detection means, The thermal storage agent temperature detection means detects that the thermal storage agent has become close to the solidification temperature or melting temperature, and the control device vibrates the thermal storage agent vibration device to vibrate the thermal storage agent. Thus, it is possible to prevent overcooling and reliably use latent heat at a predetermined temperature.

  In the seventh aspect of the invention, the outer periphery of the apparatus is bonded with a bonding material and covered with a vacuum heat insulating material, so that heat radiation from the apparatus is reduced and a highly efficient operation can be performed.

  The eighth invention is provided with a heater for heating, and the fluid is also heated by the heater for heating, so that the amount of the heat storage agent can be reduced, and the heat storage device can be further downsized.

  9th invention is a heat pump water heater provided with the heat storage apparatus of any one of Claims 1-8, and can provide a small and highly efficient heat pump water heater.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 shows a configuration diagram of a heat storage device according to the first embodiment of the present invention.

  In FIG. 1, a heat storage panel 4 is made of a mold material 6 having a fluid flow path 5, holding a heat storage body 7 having a heat storage agent 2 on both sides or one side of the mold material 6, and sandwiched by protrusions 8. The heat storage body 7 is brought into close contact with the heat storage / radiation panel 4, and the end of the heat storage body 7 is made into an end plate heat storage / heat dissipation panel 9, and is fastened and fixed by a fastening body 10 such as a bolt.

  About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, in the heat storage, a high-temperature fluid is caused to flow through the mold 6 of the heat storage / radiation panel 4 or the fluid flow path 5 of the end plate heat storage / radiation panel 9 to heat the heat storage body 7 to store heat in the heat storage agent 2. For heat dissipation, a low-temperature fluid is flowed to the fluid flow path 5 of the heat storage / radiation panel 9 of the heat storage / radiation panel 4 where no high-temperature fluid flows, and the heat is released from the heat storage agent 2 of the heat storage body 7 to the fluid. To do. For example, a high-temperature fluid or a low-temperature fluid may be alternately flowed through the fluid flow path 5 of the mold member 6 of the heat storage and radiation panel 4.

As described above, in the present embodiment, the heat storage body 7 and the heat storage / radiation panel 4 are layered in order and fastened with a fastening body, whereby the heat storage body 7 is firmly sandwiched and fixed between the heat storage / radiation panel 4 and the mold 6 The heat storage body 7 is adhered and laminated on the surface of the heat storage, and the heat storage agent 2 is filled with high density so that heat can be stored and taken out at high efficiency, and the heat storage tank can be downsized. It becomes.

(Embodiment 2)
FIG. 2 shows a configuration diagram of a heat storage device according to the second embodiment of the present invention.

  In FIG. 2, the mold material 6 of the heat storage and heat dissipation panel 4 is made of an aluminum extrusion mold material, and a corrosion prevention film 11 such as a resin is provided on the outer surface where the heat storage body 7 made of the heat storage agent 2 such as sodium acetate trihydrate contacts. It is composed. About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, although the heat storage body 7 which consists of heat storage agents 2, such as sodium acetate trihydrate, is contacting both surfaces of the mold material 6 of an aluminum extrusion mold material, since the corrosion prevention film | membrane 11 is provided on both surfaces, the heat storage agent 2 is provided. It is possible to prevent the heat storage agent from deteriorating due to direct contact between the aluminum and the elution of ions from the aluminum to the heat storage agent 2 and corrosion of the aluminum.

  As described above, in the present embodiment, the corrosion prevention coating 11 is formed on the outer surface of the mold 6 made of an aluminum extruded mold, thereby preventing the aluminum and the heat storage agent 2 from coming into direct contact with each other. It is possible to prevent the heat storage agent 2 from deteriorating by preventing corrosion.

(Embodiment 3)
FIG. 3 shows a configuration diagram of a heat storage device according to the fourth embodiment of the present invention.

  In FIG. 3, the heat storage body 7 stores a plurality of heat storage agents 2 in a thin bag-like container 12 such as polyethylene.

About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
First, a plurality of plate-like heat storage agents 2 are stored in the bag-like container 12, and the individual heat storage agents 2 are divided and filled in the bag-like container 12 by means such as heat fusion, so Can be easily mounted, and corrosion of aluminum or copper metal can be prevented.

  As described above, in the present embodiment, by storing a plurality of heat storage agents 2 in the bag-like container 12, the heat storage body 7 can be filled after the apparatus is assembled, and the heat storage agent 2 is configured. Contact is made through the bag-like container 12 without directly contacting the material, and aluminum or copper having good thermal conductivity can be used as a constituent material without surface treatment.

(Embodiment 4)
FIG. 4 shows a configuration diagram of a heat storage device according to the fourth embodiment of the present invention.

  In FIG. 4, the heat storage / radiation panel 4 is configured by providing a protruding convex portion 14 provided with a through hole 13 on both side surfaces of a mold member 6 and a fixing convex portion 16 provided with a female screw 15.

  About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the heat storage / radiation panel 4 and the heat storage body 7 are laminated, the other projection 6 is fixed to the through hole 13 of the penetration projection 14 provided on both sides of the mold 6 through the fastening body 10 such as a bolt. The bolt of the fastening body 10 is screwed into the female screw 15 of the portion 16 and fixed.

As described above, in the present embodiment, the heat storage body is obtained by screwing and fixing the bolt of the fastening body 10 to the female screw 15 of the other mold material 6 through the fastening body 10 such as a bolt through the through hole 13 of the mold material 6. 7 and the mold material 6 are firmly adhered to each other, so that heat from the heat storage body 7 can be efficiently put in and out.

(Embodiment 5)
FIG. 5 shows a configuration diagram of a heat storage device according to the fifth embodiment of the present invention.

  In FIG. 5, the heat storage / radiation panel 4 is provided with a heat storage agent temperature detection means 17 and a heat storage agent vibration device 18 on the side wall of the heat storage body 7 housing, and the heat storage agent vibration device according to the output of the heat storage agent temperature detection means 17. A control device 19 for controlling 18 is provided.

  About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, during heat dissipation, the heat storage agent 2 of the heat storage body 7 is in a melted state at a high temperature. By flowing a low-temperature fluid through the fluid flow path 5 of the heat storage / radiation panel 4, heat transfer occurs from the heat storage agent 2 to the fluid. The heat storage agent 2 releases heat and gradually lowers the temperature to approach the solidification temperature. However, when a latent heat storage material such as sodium acetate trihydrate is used for the heat storage agent 2, it is supercooled. Even if the phenomenon appears and the solidification temperature is reached, the temperature may be lowered without solidification and latent heat may not be extracted. However, the heat storage agent temperature detection means 17 detects that the temperature of the heat storage agent 2 has reached the solidification temperature. Then, the heat storage agent vibration device 18 is vibrated by the control device 19 to vibrate the heat storage agent 2 to promote the coagulation reaction and to reliably extract latent heat at a predetermined temperature.

  As described above, in the present embodiment, the heat storage agent temperature detection means 17, the heat storage agent vibration device 18, and the control device 19 are provided, and when the heat storage agent 2 reaches the solidification temperature, the heat storage agent 2 is vibrated. The solidification reaction of the heat storage agent 2 is promoted, and latent heat can be extracted from the heat storage agent 2 at a predetermined temperature.

(Embodiment 6)
FIG. 6 shows a configuration diagram of a heat storage device according to the sixth embodiment of the present invention.

  In FIG. 6, the outer periphery of the laminated heat storage and radiation panel 4 is covered with a plate-like vacuum heat insulating material 20, and the joining portion of the plate-like vacuum heat insulating material 20 is composed of a tape or a packing material of the plate-like vacuum heat insulating material 20. It is joined.

  About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, a plate-like vacuum heat insulating material 20 is provided in close contact with the periphery of a rectangular heat storage tank 1 which is laminated and fastened by stacking the heat storage and heat-dissipating panels 4. The heat storage and heat dissipation panel 4 is insulated and insulated.

  As described above, in the present embodiment, each component surface of the rectangular heat storage tank 1 in which the heat storage and heat dissipation panels 4 are stacked and fastened is covered with the plate-like vacuum heat insulating material 20 and joined with the joined body 21. The plate-like vacuum heat insulating material 20 that is excellent in heat insulation but difficult to bend can be used as a heat insulating material, and a high-performance and small-sized heat storage device with little heat dissipation can be realized.

(Embodiment 7)
FIG. 7 shows a configuration diagram of a heat storage device according to the seventh embodiment of the present invention.

  In FIG. 7, the heater 22 for heating is laminated by being sandwiched between the heat storage body 7 and the heat storage / heat dissipating panel 4 and the heat storage / heat dissipating panel 9 for the end plate, and the heater 22 is heated and stored. The heat storage and heat dissipation panel 9 is in close contact, and is fastened and fixed by a fastening body 10.

About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
First, when flowing a low-temperature fluid through the fluid flow path 5 to radiate heat from the heat storage agent 2 of the heat storage body 7 to the fluid, the fluid is also heated by the heater 22 for heating. Thereby, the amount of heat required to store heat in the heat storage agent 2 decreases, and the required amount of the heat storage agent 2 decreases.

  As described above, in the present embodiment, the heating heater 22 is laminated between the heat storage body 7 and the heat storage / radiation panel 4 and the end plate heat storage / radiation panel 9, and the heating heater 22 is stacked on the heat storage body 7. The heat storage agent 2 can be reduced in quantity by making the heat storage and heat dissipation panel 4 and the end plate heat storage and heat dissipation panel 9 tightly attached, fastened and fixed by the fastening body 10, and heating the fluid also by the heater 22. Can be realized.

(Embodiment 8)
FIG. 8 shows a configuration diagram of a heat storage device according to the eighth embodiment of the present invention.

  In FIG. 8, the heat source 4 configured by a heat pump circuit includes a compressor 23, an expansion valve 24 that is a decompression unit, an evaporator 25, an internal heat exchanger 26, and a heat storage / dissipation panel 4 that is a radiator. ing.

  About the thermal storage apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the refrigerant gas, which has been made high-temperature and high-pressure by the compressor 23, flows into the fluid flow path 5 of the heat storage / radiation panel 4, dissipates heat to the heat storage body 7, and the internal heat exchanger 27 heats the intake gas of the compressor 23 by reducing the temperature. After that, the liquid is made into a low-temperature and low-pressure liquid by the expansion valve 27, absorbs heat by the evaporator 25, evaporates, and is sucked again into the compressor 23 in a gas state.

  As described above, in the present embodiment, the heat generated in the heat pump circuit is directly stored in the heat storage body by directly flowing the refrigerant gas, which has been made high-temperature and high-pressure by the compressor 23, into the fluid flow path 5 of the heat storage and radiation panel 4. Therefore, it is possible to efficiently store heat in the heat storage body 7 with a simple configuration without requiring a secondary heat medium.

  When carbon dioxide gas is used as the refrigerant, it can pass through the fluid flow path 5 without being liquefied and the effect of a radiator can be eliminated, but the same effect can be obtained, and the intake gas of the compressor 23 can be obtained by the internal heat exchanger 26. Since the temperature entering the fluid flow path 5 can be increased by increasing the temperature of the heat storage agent 2, the heat storage agent 2 can be used efficiently.

  As described above, since the heat storage device according to the present invention can realize a small, highly efficient and highly reliable device, it can be used for applications such as residential heating, bathroom heating drying, clothing dryers, and industrial waste heat recovery devices. Is also applicable.

Front sectional drawing of the thermal storage apparatus in Embodiment 1 of this invention (A) Front view of heat storage device in embodiment 2 of the present invention (b) AA cross-sectional view of FIG. (A) Partial cross-sectional view of the heat storage device according to Embodiment 3 of the present invention (b) AA cross-sectional view of FIG. Front sectional drawing of the thermal storage apparatus in Embodiment 4 of this invention Front sectional drawing of the thermal storage apparatus in Embodiment 5 of this invention Front view of heat storage device according to Embodiment 6 of the present invention Front sectional drawing of the thermal storage apparatus in Embodiment 7 of this invention The block diagram which mounted the heat storage apparatus in Embodiment 8 of this invention in the heat pump water heater Front sectional view of a conventional heat storage device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal storage tank 2 Thermal storage agent 3 Heat exchanger 4 Thermal storage panel 5 Fluid flow path 6 Mold material 7 Thermal storage body 8 Projection part 9 End plate thermal storage panel 10 Fastening body 11 Corrosion prevention film 12 Bag-shaped container 13 Through-hole 14 For penetration Convex portion 15 Female screw 16 Convex portion 17 Fixing temperature detecting means 18 Thermal storage agent vibration device 19 Control device 20 Plate-shaped vacuum heat insulating material 21 Bonding material 22 Heating heater

Claims (9)

A heat storage device in which a heat storage body having a fluid flow path is sequentially stacked with a heat storage body sandwiched between the heat storage body and the heat storage heat dissipation panel. The heat storage device according to claim 1, wherein a protrusion is formed on the surface of the heat storage and heat dissipation panel to hold the heat storage body. The heat storage device according to claim 1 or 2, wherein the heat storage and heat dissipation panel is formed of an aluminum extruded mold having an outer surface provided with a corrosion prevention film. The heat storage device according to any one of claims 1 to 3, wherein the heat storage agent is formed by housing the heat storage agent in a thin-film bag-like container. 5. Any one of claims 1 to 4, wherein a penetration convex portion having a through hole and a fixing convex portion for forming a female screw are provided on a side surface of the mold material of the thermal storage panel, and the thermal storage panel and the flow path plate are fastened. The heat storage device according to claim 1. The heat storage agent temperature detection means, the heat storage agent vibration device, and a control device for controlling the operation of the heat storage agent vibration device based on the output of the heat storage agent temperature detection means. The heat storage device according to item. The heat storage device according to any one of claims 1 to 6, wherein the outer periphery of the device is bonded with a bonding material and covered with a vacuum heat insulating material. The heat storage device according to any one of claims 1 to 7, further comprising a heater for heating. The heat pump water heater provided with the heat storage apparatus of any one of Claims 1-8.

Images