JP2010216666A - Heat accumulator and water heater equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact and high performance heat accumulator capable of efficiently accumulating a large amount of heat in a small volume to take it out from there in a simple composition, without adding a particular component such as a heat exchanger, by accumulating heat in a heat-accumulating element with heated fluid and taking out heat from the heat accumulating element with heat-radiating fluid. <P>SOLUTION: The heat accumulator includes a heater 8 and a heat radiator 11, and in the heater 8, a flow passage 18 is formed by joining a front plate 15, a rear plate 16, and a middle plate 17. The heat-accumulating element can receive heat from the heated fluid flowing in the heater 8 sticking to its one surface in a large heat-transfer area and at a large heat-transfer ratio, and can efficiently accumulate a large amount of heat in a small volume to take it out from there in a simple composition without adding a particular component such as the heat exchanger. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat storage device used for heat recovery of bath hot water.

  Conventionally, this type of heat storage device is filled with a spherical heat storage body filled with a latent heat storage agent in a cylindrical heat storage tank, and circulated in a circuit where hot water heated by a heat source is introduced from the upper part of the heat storage tank and taken out from the lower part. The heat is stored and the heat is taken out from the lower part of the heat storage tank and hot water is taken out from the upper part to use it for hot water supply (see, for example, Patent Document 1).

FIG. 7 shows a conventional heat storage device described in Patent Document 1. As shown in FIG. As shown in FIG. 7, the heat storage tank 1, a spherical heat storage body 2, a circulation pump 3, a heat source 4, a water supply pipe 5, and a hot water supply pipe 6 are configured.
JP 2004-324995 A

  However, in the conventional configuration, the volume ratio of the heat storage body 2 occupying in the heat storage tank 1 becomes a small value due to geometric constraints, and is practically about 50%. Therefore, the amount of heat stored in the heat storage tank 1 is It is difficult to increase the heat storage capacity, and the heating fluid used for heat storage and the heat dissipation fluid used for heat dissipation are the same fluid, so it is necessary to add parts such as a heat exchanger when used for heat recovery. There was a problem that the device becomes large.

  The present invention solves the above-mentioned conventional problems, and stores heat in a heat storage body with a heating fluid, takes out heat from the heat storage body with a radiating fluid, and has a simple configuration without adding special parts such as a heat exchanger. An object of the present invention is to provide a small and high-performance heat storage device that can efficiently store and extract a large amount of heat in a small volume.

  In order to solve the conventional problem, the heat storage device of the present invention includes a heater, a radiator, and a heat storage body, and includes at least one of the heater and the radiator. The inlet of the heater and / or the inlet of the radiator is connected in parallel to provide an inlet pipeline, the outlet of the heater and / or the outlet of the radiator is connected in parallel to provide an outlet pipeline, and the heating The heater and the radiator are alternately arranged, the heat storage body is disposed between the heater and the radiator, and the heater has a front plate in which an inlet pipe and an outlet pipe are joined, and A flow path is formed by joining a back plate and an intermediate plate sandwiched between the front plate and the back plate, and heating is performed without adding a component such as a heat exchanger. The heat storage fluid and the heat dissipation fluid can be separated, the thickness of the heat storage body is increased, and the heater and heat dissipation By reducing the thickness of, by increasing the volume ratio of the heat storage body occupying the storage tank, and heat accumulation of a large amount of heat to a small volume, it becomes possible to perform heat storage or heat radiation efficiency.

Moreover, the heat storage device of the present invention includes a heater, a radiator, and a heat storage body, and includes at least one of the heater and the radiator, and an inlet of the heater and / or The inlet of the radiator is connected in parallel and an inlet pipe, the outlet of the heater and / or the outlet of the radiator is connected in parallel to provide an outlet pipe, and the heater and the radiator are alternately arranged. The heat storage body is disposed between the heater and the radiator, and the radiator has a front plate in which an inlet pipe and an outlet pipe are joined, a back plate, and the front plate. A flow path is formed by joining an intermediate plate sandwiched between the back plate and the heating fluid and heat dissipation without adding a component such as a heat exchanger. Fluid can be separated, the thickness of the heat storage body is increased, and the thickness of the heater and radiator is decreased. The Rukoto, by increasing the volume ratio of the heat storage body occupying the storage tank, and heat accumulation of a large amount of heat to a small volume, it becomes possible to perform heat storage or heat radiation efficiency.

  According to the present invention, a large amount of heat can be efficiently stored and taken out in a small volume, and a small and high-performance heat storage device can be realized.

  1st invention is equipped with the heater, the heat radiator, and the thermal storage body, and has at least any one among the said heater and the said heat radiator, the inlet_port | entrance of the said heater, and / or the said heat radiator. Inlet pipes are connected in parallel, the inlet pipe, the outlet of the heater and / or the outlet of the radiator are connected in parallel to provide an outlet pipe, and the heater and the radiator are alternately arranged. The heat storage body is disposed between the heater and the radiator, and the heater has a front plate in which an inlet pipe and an outlet pipe are joined, a back plate, the front plate, and the back plate. It is characterized in that the flow path is formed by joining the intermediate plate sandwiched between the heating fluid and the heat dissipation fluid without adding a component such as a heat exchanger. The heat storage tank can be made by increasing the thickness of the heat storage body and decreasing the thickness of the heater and radiator The volume ratio of the regenerator to total by increasing, and heat accumulation of a large amount of heat to a small volume, it becomes possible to perform heat storage or heat radiation efficiency.

  2nd invention is equipped with the heater, the heat radiator, and the thermal storage body, and has at least any one among the said heater and the said heat radiator, the inlet_port | entrance of the said heater, and / or the said heat radiator. Inlet pipes are connected in parallel, the inlet pipe, the outlet of the heater and / or the outlet of the radiator are connected in parallel to provide an outlet pipe, and the heater and the radiator are alternately arranged. The heat storage body is disposed between the heater and the radiator, and the radiator has a front plate in which an inlet pipe and an outlet pipe are joined, a back plate, the front plate, and the back plate. It is characterized in that the flow path is formed by joining the intermediate plate sandwiched between the heating fluid and the heat dissipation fluid without adding parts such as a heat exchanger. It can be separated by increasing the thickness of the heat storage body and decreasing the thickness of the heater and radiator. , By increasing the volume ratio of the heat storage body occupying the storage tank, and heat accumulation of a large amount of heat to a small volume, it becomes possible to perform heat storage or heat radiation efficiency.

  The third invention is characterized in that a ninety-nine fold portion is provided on the intermediate plate, and the heat transfer area between the fluid, the heater and the radiator can be increased.

  The fourth invention is characterized in that an uneven portion is provided on the intermediate plate, and the fluid flowing in the flow path is disturbed to become a turbulent state, and the heat transfer coefficient between the fluid, the heater, and the radiator is increased. Can be bigger.

  According to a fifth aspect of the present invention, the front plate and the back plate have a plurality of notches, the inlet pipe and the outlet pipe are joined to the sides of the notches, and the radiator forms the heater. It is characterized in that the plate and the back plate are arranged in reverse, and the radiator is arranged with the front and back plates of the heater reversed, and in the notch portion of the plate constituting the radiator By arranging the inlet pipe and outlet pipe of the heater, and arranging the inlet pipe and outlet pipe of the heat radiating flow path plate in the notch of the plate constituting the heater, the heater and the radiator with the same configuration Can be configured.

According to a sixth aspect of the present invention, there is provided a straight pipe joined to a front plate, an outer pipe joined coaxially with the straight pipe to the back plate, a concave portion provided on an inner peripheral surface of the outer pipe, and provided in the concave portion The straight pipe is inserted into the outer pipe to form an inlet pipe and an outlet pipe, and can be easily heated without adding a special pipe member. The apparatus can be miniaturized by laminating the front and back plates constituting the radiator and the front and back plates constituting the radiator.

  The seventh invention is characterized in that the inlet pipe and the outlet pipe communicate with each other through one flow path in the heater and / or heat radiator. When the heaters are connected in parallel and a plurality of heaters are connected in parallel, the flow rate is evenly distributed to each heater, and heat can be evenly stored in the heat accumulator. In addition, when a plurality of radiators are connected in parallel, the flow rate is evenly distributed to each radiator, and heat can be evenly extracted from the heat storage body.

  The eighth invention is characterized in that the heater and / or the radiator is provided with a protrusion that covers at least a part of the heat storage body, and the flatness of the heating surface of the front and back plates constituting the heater is increased. It maintains and it adheres firmly to a heat storage body, and can improve the efficiency of heat storage operation. Further, the flatness of the heat radiating surfaces of the front and back plates constituting the radiator is maintained and tightly adhered to the heat storage body, so that the efficiency of the heat radiation operation from the heat storage body can be improved.

  The ninth invention is characterized in that a fastening body is provided around the front and back plates, and the heat storage body is in close contact with the heat transfer surfaces of the heater and the radiator by the fastening body, and is attached to the outer tube. Since the inserted straight pipe is prevented from coming off and the seal is maintained, the fluid leakage from the connecting portion can be prevented with a simple configuration, and the heat storage performance can be improved.

  In the tenth invention, the front plate, the back plate, and the intermediate plate are preferably made of copper or stainless steel.

  An eleventh aspect of the present invention is a water heater provided with any one of the first to tenth heat storage devices, which can efficiently store and use a large amount of heat in a small volume. Can provide.

  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 heating inlet pipe 7 connects the inlets of two heaters 8 in parallel, a heating outlet pipe 9 connects the outlets of the heaters 8 in parallel, and a radiating inlet pipe 10 is a radiator. 11 is connected in parallel, and the heat radiation outlet pipe 12 is formed by connecting the outlets of three radiators 11 in parallel. Further, the heating inlet pipe 7 and the heating outlet pipe 10 include a circulation pump. 3 and a heat source 4 such as a heat pump or a bathtub are connected to form a heating circuit 13, and water is supplied to the heat radiation inlet pipe 10 and taken out from the heat radiation outlet pipe 12 as hot water. The plate-shaped heat storage body 14 is configured by providing one surface in close contact with the heater 8 and the other surface in close contact with the heat radiator 11 in a space formed by alternately arranging the heaters 8 and the heat radiators 11. ing.

  FIG. 2 shows a configuration diagram of the heater 8 / heat radiator 11 of the heat storage device according to the first embodiment of the present invention.

  In FIG. 2, the heater 8 joins three flat plates of a front plate 15, a back plate 16, and an intermediate plate 17 to form a flow path 18, and a front inlet pipe 19 and a front outlet pipe 20 are formed on the front plate 15. , The back inlet pipe 21 and the back outlet pipe 22 are joined to the back plate 16, and the notch portion 23 is provided in a portion adjacent to the front inlet pipe 19 and the front outlet pipe 20. The vessel 11 has the same configuration as the heater 8 and is arranged with the front and back reversed. The middle plate 17 is provided with a ninety-nine fold portion 17a and a dimple processing 17b which is a convex portion.

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

  First, in the heat storage operation, the circulating fluid 3 is operated to circulate the heating fluid in the heating circulation circuit 13, whereby the heated fluid heated by the heat source 4 is heated to the heater 8 from the heating inlet line 7. Then, the plate-like heat storage body 14 that is in close contact with the heater 8 is added to the front plate 15 or the back plate 16 and also heated through the intermediate plate 17 to store heat.

  In the heat radiation operation, water is supplied to the heat radiation inlet duct 10 and flows into the heat radiator 11, so that the flat plate heat accumulator 14 in close contact with the heat radiator 11 is connected to the front plate 15 or the back plate 16 through the intermediate plate 17. It receives heat, heats the feed water, and is taken out from the heat radiation outlet pipe 12 as hot water.

  Further, the back inlet pipe 21 and the back outlet pipe 22 on the back surface of the heater 8 are connected to the front inlet pipe 19 and the front outlet pipe 20 on the front surface of the heater 8 to be arranged next, and a plurality of heaters 8 are arranged in parallel. And a radiator 11 in which the front and back of the heater 8 are reversed between the heater 8 and the heater 8 with the flat plate heat storage body 14 interposed therebetween, and the back inlet pipe 21 on the back of the radiator 11 and the back The outlet pipe 22 is connected to the front inlet pipe 19 and the front outlet pipe 20 on the surface of the radiator 11 to be arranged next, and a plurality of radiators 11 are connected in parallel and arranged.

  Moreover, since the ninety-nine folds 17a are arranged on the intermediate plate 17, the heat transfer area between the fluid and the heater 8 and the radiator 11 is increased, and the fluid flowing through the flow path 18 is dimple processed. The heat transfer coefficient between the fluid, the heater 8 and the radiator 11 is increased by being turbulent by 17b.

  As described above, in the present embodiment, the inlets of the two heaters 8 are connected in parallel to provide the heating inlet pipe 7, and the outlets of the two heaters 8 are connected in parallel to form the heating outlet pipe. 9, the inlets of the three radiators 11 are connected in parallel, the radiator inlet conduit 10 is provided, the outlets of the three radiators 11 are connected in parallel to provide the radiator outlet conduit 12, and a flat plate heat storage The body 14 has a structure in which one surface is closely attached to the heater 8 in a space formed by alternately arranging a plurality of heaters 8 and radiators 11, and the other surface is closely attached to the radiator 11. The heater 8 joins three flat plates of a front plate 15, a back plate 16 and an intermediate plate 17 to form a flow path 18, and joins a front inlet tube 19 and a front outlet tube 20 to the front plate 15. Then, by joining the back inlet pipe 21 and the back outlet pipe 22 to the back plate 16, the flat plate heat storage body 14 flows through the heater 8 that is in close contact with one surface. Large heat transfer area from the hot fluid, heat and to heat storage in the heat transfer coefficient, a large heat transfer area to fluid flowing into the radiator 11 in close contact with the other one side, and be dissipated in heat transfer coefficient.

Further, a front inlet pipe 19 and a front outlet pipe 20 are provided on the front surface of the heater 8, and a back inlet pipe 21 and a back outlet pipe 22 are provided on the rear face, and cut out at the sides of the front inlet pipe 19 and the front outlet pipe 20. By providing a configuration in which the portion 23 is provided and the radiator 11 is configured by reversing the front and back of the heater 8, the front inlet pipe 19 and the back inlet pipe 21 of the plurality of heaters 8 are connected in order to form a heating inlet. The pipe 7 is configured to connect the front outlet pipe 20 and the back outlet pipe 22 in order to form the heating outlet pipe 9, and the front inlet pipe 19 and the back inlet pipe 21 of the plurality of radiators 11 are connected in order. Thus, the heat radiation inlet pipe 11 is constituted, and the front outlet pipe 20 and the back outlet pipe 22 are connected in order to constitute the heat radiation outlet pipe 12, so that the heating fluid and the heat radiation fluid are separated. Efficient heat generation in a small volume with a simple configuration without adding special parts such as a heat exchanger It stores heat well and can be taken out efficiently.

  Further, the heat radiation inlet pipe 11 and the heat radiation outlet pipe 12 are arranged in the notch 23 of the heater 8, and the heating inlet pipe 7 and the heating outlet pipe 9 are arranged in the notch 23 of the heat radiator 11. The device can be downsized.

  In the present embodiment, the case of two heaters 8 and three radiators 11 has been described. However, for example, one of them may be one.

(Embodiment 2)
FIG. 3 shows a block diagram of a heat storage device according to the second embodiment of the present invention.

  In FIG. 3, the heater 8 has an outer diameter smaller than the inner diameter of the straight pipe 24 joined perpendicularly to the surface of the front plate 15 and the straight pipe 24 joined to the surface of the back plate 16 coaxial with the straight pipe 24. A tube 25, a ring-shaped recess 26 provided on the inner peripheral surface of the outer tube 25, and an O-ring 27 which is a seal member provided in the ring-shaped recess 26 are provided.

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

  First, the straight tube 24 of one heater 8 is sequentially inserted into the outer tube 25 of the other heater 8, and a plurality of heaters 8 are arranged in parallel on the same axis.

  As described above, in the present embodiment, the straight tube 24 of the heater 8 is inserted into the outer tube 25 of the other heater 8 and sealed by the O-ring 27 provided in the ring-shaped recess 26. Even when the thickness of the flat plate heat storage body 14 disposed between the heaters 8 and the radiator 11 is different, the length of the straight tube 24 inserted into the outer tube 25 is changed to change the flat plate shape of the heater 8 and Since the adhesion of the heat accumulator 14 can be maintained firmly, a highly reliable and high performance device can be realized.

  Even when a plurality of heat radiators 11 are arranged in parallel, the same effect can be obtained by inserting the straight pipe 24 into the outer pipe 25 and sealing it with the O-ring 27.

(Embodiment 3)
FIG. 4 shows a configuration diagram of a heat storage device according to the third embodiment of the present invention.

  In FIG. 4, the flow path 18 of the heater 8 and the heat radiator 11 is comprised by the flow path which connects an entrance and an exit by 1 path | pass.

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

  First, when a plurality of heaters 8 are connected in parallel to flow a heating fluid, the heating fluid is branched from the heating inlet pipe 7 and flows from the inlet of each heater 8 to the flow path 18 and from the outlet to the heating outlet pipe 10. It will flow together.

  As described above, in the present embodiment, by configuring the flow path 18 of the heater 8 and the radiator 11 with a flow path that connects the inlet and the outlet with a single path, a large number of heaters 8 and the radiator 11 are formed. Even in the configuration connected in parallel, the flow rate of the heating fluid flowing through each heater 8 is made uniform, and the flow rate of the heat dissipation fluid flowing through each radiator 11 is made uniform, so that the heat transfer of the flat plate heat storage body 14 is stabilized. And high performance heat storage and heat dissipation.

(Embodiment 4)
FIG. 5 shows a configuration diagram of a heat storage device according to the fourth embodiment of the present invention.

In FIG. 5, the heater 8 and the radiator 11 are provided with bent portions 28 around them, and are configured so that the bending directions of the left and right end portions are reversed and the bending directions of the upper and lower end portions are reversed. .

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

  First, when the flat heat storage body 14 is provided in close contact with the heater 8 and the radiator 11, the side surface of the flat heat storage body 14 is surrounded by a bent portion 28.

  As described above, in the present embodiment, the bent portion 28 is provided around the heater 8 and the radiator 11 so that the distortion of the surfaces of the heater 8 and the radiator 11 is corrected by the bent portion 28. Then, since the flat plate heat storage body 14 is arranged in the space surrounded by the bent portion 28, the flat plate heat storage body 14 is arranged at an appropriate position to improve the close contact with the flat plate heat storage body 14. Heat transfer performance can be improved.

(Embodiment 5)
FIG. 6 shows a configuration diagram of a heat storage device according to the fifth embodiment of the present invention.

  In FIG. 6, a plurality of arrangements composed of the heater 8, the flat plate heat storage body 14, and the radiator 11 are provided with a belt-like fastening body 29 around the periphery. The heater 8 and the radiator 11 are firmly fixed and fixed on both sides.

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

  First, the outer periphery of a plurality of arrays consisting of the heater 8, the flat plate heat storage body 14, and the radiator 11 is fastened with a belt-shaped fastening body 29, and the heater 8 and the heat radiator 11 are closely fixed to both surfaces of the flat plate heat storage body 14, The position of the pipe connection will be fixed.

  As described above, in the present embodiment, the plurality of arrangements including the heater 8, the flat plate heat storage body 14, and the radiator 11 have a configuration in which the belt-shaped fastening body 29 is provided around the flat plate heat storage body. Therefore, the heater 8 and the radiator 11 are firmly and firmly fixed on both surfaces of the plate 14.

  As a result, the heat storage and heat release operation for storing heat from the heater 8 to the flat plate heat storage body 14 and radiating heat from the flat plate heat storage body 14 to the radiator 11 is performed with high performance, and the internal pressure of the heater 8 and the radiator 11 is increased. However, since the deformation is suppressed by the belt-like fastening body 29, it is possible to prevent the connection pipe from coming off.

  As described above, since the heat storage device according to the present invention can efficiently store and use a large amount of heat in a small volume, it can be used for residential hot water supply, heating, bathroom heating drying, clothes dryers, and industrial waste. It can also be applied to applications such as heat recovery equipment.

Configuration diagram of heat storage device in Embodiment 1 of the present invention (A) AA sectional view of FIG. 2 (c) in Embodiment 1 of the present invention (b) Perspective view of the heat storage device (c) Front view of the heat storage device (d) FIG. 2 (c) BB cross section (A) Front view of heat storage device in embodiment 2 of the present invention (b) AA sectional view of FIG. 3 (a) Front view of heat storage device according to Embodiment 3 of the present invention (A) Front view of heat storage device in embodiment 4 of the present invention (b) AA sectional view of FIG. 5 (a) The perspective view of the thermal storage apparatus in Embodiment 5 of this invention Configuration diagram of conventional heat storage device

DESCRIPTION OF SYMBOLS 8 Heater 9 Heating exit pipe 10 Radiation inlet pipe 11 Radiator 12 Radiation outlet pipe 13 Heating circulation circuit 14 Heat storage body 15 Front plate 16 Back plate 17 Middle plate 17a Ninety-nine folds 17b Dimple processing 18 Flow channel 19 Front inlet pipe 20 Front outlet pipe 21 Back inlet pipe 22 Back outlet pipe 23 Notch 24 Straight pipe 25 Outer pipe 26 Ring-shaped recess 27 O-ring 28 Bending section 29 Band-shaped fastener

Claims (11)

A heater, a radiator, and a heat accumulator, each having at least one of the heater and the radiator, and connecting the inlet of the heater and / or the inlet of the radiator in parallel Then, an inlet pipe, an outlet of the heater and / or an outlet of the radiator are connected in parallel to provide an outlet pipe, the heater and the radiator are alternately arranged, and the heat storage body The heater is disposed between the heater and the radiator, and the heater is sandwiched between a front plate obtained by joining an inlet pipe and an outlet pipe, a back plate, and the front plate and the back plate. A heat storage device characterized in that a flow path is formed by joining an intermediate plate. A heater, a radiator, and a heat accumulator, each having at least one of the heater and the radiator, and connecting the inlet of the heater and / or the inlet of the radiator in parallel Then, an inlet pipe, an outlet of the heater and / or an outlet of the radiator are connected in parallel to provide an outlet pipe, the heater and the radiator are alternately arranged, and the heat storage body The radiator is disposed between the heater and the radiator, and the radiator is sandwiched between a front plate obtained by joining an inlet pipe and an outlet pipe, a back plate, and the front plate and the back plate. A heat storage device characterized in that a flow path is formed by joining an intermediate plate. The heat storage device according to claim 1, wherein a ninety-nine fold portion is provided on the intermediate plate. The heat storage device according to any one of claims 1 to 3, wherein an uneven portion is provided on the intermediate plate. The front plate and the back plate have a plurality of cutout portions, and an inlet pipe and an outlet pipe are joined to the side of the cutout portion, and a heat radiator includes the front plate and the back plate forming a heater. The heat storage device according to any one of claims 1 to 4, wherein the heat storage devices are arranged in reverse. A straight pipe joined to the front plate; an outer pipe joined coaxially to the straight pipe to the back plate; a recess provided on the inner peripheral surface of the outer pipe; and a seal member provided in the concave part. The heat storage device according to any one of claims 1 to 5, wherein the straight pipe is inserted into the outer pipe to form an inlet pipe line and an outlet pipe line. The heat storage device according to any one of claims 1 to 6, wherein the inlet pipe and the outlet pipe are configured to communicate with each other through one flow path in the heater and / or the radiator. The heat storage device according to any one of claims 1 to 7, wherein the heater and / or the heat radiator is provided with a protruding portion that covers at least a part of the heat storage body. The heat storage device according to any one of claims 1 to 8, wherein a fastening body is provided around the front plate and the back plate. The heat storage device according to any one of claims 1 to 9, wherein the front plate, the back plate, and the intermediate plate are made of copper or stainless steel. A water heater provided with the heat storage device according to any one of claims 1 to 10.