JP5239962B2 - Thermal storage device and hot water heater provided with the same - Google Patents

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 above conventional problems, the heat storage device of the present invention, the heating channel of the flow of heating fluid, the heat radiation passage through the radiator fluid, have a heat exchange between the radiator fluid and the heating fluid comprising a plurality of pressurized radiator, a heat accumulator which is disposed sandwiched between a plurality of the pressurized radiator space, the performing,
The plurality of heating channel inlets and the plurality of heat radiation channel inlets are respectively connected in parallel to form a heating inlet pipe and a heat radiation inlet pipe, and a plurality of the heating channel outlets and The outlets of the heat radiating passages are respectively connected in parallel to form a heating outlet pipe and a heat radiating outlet pipe, and the heat storage body is in close contact with both the heating passage and the heat radiating passage. It is possible to separate the heating fluid and the heat dissipation fluid without adding parts such as a heat exchanger, and by increasing the thickness of the heat storage body and decreasing the thickness of the heat radiator The volume ratio of the heat storage body in the heat storage tank is increased, a large amount of heat is stored in a small volume, and heat storage or heat dissipation can be performed efficiently.

  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 provided.

The first invention, the heating channel of the flow of heating fluid, the heat radiation passage through the radiator fluid, have a, and a plurality of pressurized radiator for exchanging heat between the heat radiation fluid and the heating fluid, a plurality of A heat storage body disposed in a space sandwiched between the heat radiators , and a plurality of heating channel inlets and a plurality of heat radiation channel inlets are connected in parallel to each other to form a heating inlet pipe A plurality of heating channels and a plurality of radiation channels are connected in parallel to form a heating outlet channel and a heat radiation outlet channel, and the heat storage body Is characterized in that it is in close contact with both the heating flow path and the heat dissipation flow path . After the heating fluid is passed through the heating flow path and the heat storage body is heated by the heat radiator, the heat storage fluid is stored. Flows through the heat dissipation channel and receives heat from the heat accumulator through the heat radiator. Large amount of heat to a small volume with a simple structure without adding a special part such as a vessel can be a take out efficiently heat storage to. In addition, heat exchange from the heating fluid to the radiating fluid can be performed without using a heat storage agent, and heat can be used efficiently. In addition, heat exchange from the heating fluid to the radiating fluid can be performed without using a heat storage agent, and heat can be used efficiently.

In addition, after flowing the heating fluid through the heating inlet pipe and heating the heat storage body with the heat radiator, the heat storage body receives heat from the heat storage body through the heat radiator by flowing the heat dissipation fluid through the heat radiation inlet pipe. A large amount of heat can be efficiently stored and taken out in a small volume with a simple configuration without adding special parts such as a heat exchanger. In addition, heat exchange from the heating fluid to the radiating fluid can be performed without using a heat storage agent, and heat can be used efficiently.

In a second aspect of the present invention, the heating channel and the heat radiation channel are formed by joining a front plate, a back plate, and an intermediate plate sandwiched between the front plate and the back plate. It is possible to reduce the thickness of the heat radiator, increase the volume ratio of the heat storage body in the heat storage tank, store a large amount of heat in a small volume, and efficiently store or release heat Will be able to.

The third invention is characterized in that a ninety-nine fold portion is provided in the intermediate plate, and the heat transfer area between the fluid and the heat-radiating plate 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, thereby increasing the heat transfer coefficient between the fluid and the heat dissipation plate. be able to.

The fifth invention is characterized in that the heat radiator is axisymmetric with respect to the central axis, and the heat radiator can be configured without distinction between the front and back sides.

6th invention is equipped with the straight pipe joined to one heat radiator and the outer pipe joined to the other heat radiator on the same axis as the straight pipe, and is provided with a recess on the inner peripheral surface of the outer pipe, A seal member is provided in the recess, and the straight pipe is inserted into the outer pipe to form an inlet pipe and an outlet pipe, and can be easily added without adding a special pipe member. The apparatus can be reduced in size by stacking the front and back plates constituting the radiator.

In a seventh aspect of the present invention, an inlet pipe and an outlet pipe are configured to communicate with each other in a heating flow path and / or a heat dissipation flow path. When the units are connected in parallel and connected, the flow rate is evenly distributed to each heating flow path, and heat can be evenly stored in the heat storage body. In addition, the flow rate is evenly distributed to each heat radiation flow path, and heat can be extracted from the heat storage body evenly.

An eighth invention is characterized in that the heat radiator is provided with a protruding portion that covers at least a part of the heat storage body. The flatness is maintained and the heat storage body is firmly adhered, and the efficiency of the heat storage operation can be improved, and 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 straight pipe inserted is prevented from coming off and the seal is maintained, it is possible to store and dissipate heat by preventing leakage of fluid from the connecting portion with a simple configuration . The tenth invention is characterized in that the heat radiator is made of copper or stainless steel, and the heat radiator is 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, the heating inlet pipe 7 connects the inlets of the heating channels 8 provided in the three radiators 15 in parallel, and the heating outlet pipe 9 connects the outlets of the heating channels 8 in parallel. The heat radiation inlet pipe 10 connects the inlets of the heat radiating flow paths 11 provided in the three heat radiators 15 in parallel, and the heat radiating outlet pipe 12 connects the outlets of the heat radiating flow paths 11 in parallel. .

  The heating inlet pipe 7 and the heating outlet pipe 10 are connected to a circulation pump 3 and a heat source 4 such as a heat pump or a bathtub to form a heating circulation circuit 13, and water is supplied to the heat radiation inlet pipe 10 to dissipate heat. It is set as the structure taken out from the outlet pipe 12 as hot water supply. The flat plate heat storage body 14 is configured by providing one surface in close contact with the heating flow path 8 and the other surface in close contact with the heat dissipation flow path 11 in a space between the heat radiator 15.

  FIG. 2 shows a configuration diagram of the heat radiator 15 of the heat storage device according to the first embodiment of the present invention.

In FIG. 2, the heat radiator 15 joins three flat plates of a front plate 16, a back plate 17, and an intermediate plate 18 to form a heating channel 8 and a heat radiation channel 11. 19a and the front outlet pipe 20a are joined, the back inlet pipe 21a and the back outlet pipe 22a are joined to the back plate 17, the portion adjacent to the front inlet pipe 19a and the front outlet pipe 20a of the front plate 16, and the back A notch portion 23 is provided in a portion adjacent to the back inlet pipe 21a and the back outlet pipe 22a of the plate 17, and the front inlet pipe 19b and the front outlet pipe 20 are provided in the intermediate plate 18.
b, the back inlet pipe 21b, and the back outlet pipe 22b are provided, and the heat radiator 15 is configured to be axisymmetric with respect to the central axis. The middle plate 18 has a ninety-nine fold portion 18a and a dimple processing 18b.

  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 so that the heating fluid heated by the heat source 4 is heated to the heating channel 8 from the heating inlet line 7. Then, the flat plate heat accumulator 14 that is in close contact with the heat radiator 15 is heated through the front plate 16 or the intermediate plate 18 and the back 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 radiation flow path 11, thereby receiving heat from the flat plate heat accumulator 14 in close contact with the heat radiator 15 via the back plate 17 or the intermediate plate 18 and the front plate 16. The feed water is heated and taken out from the heat radiation outlet pipe 12 as hot water.

  Further, the front inlet pipe 19b, the front outlet pipe 20b, and the back inlet pipe 21a of the heat radiator 15 in which the front inlet pipe 19a, the front outlet pipe 20a, the rear inlet pipe 21a, and the rear outlet pipe 22a of the heat radiator 15 are arranged next. The plurality of heat radiators 15 connected to the back outlet pipe 22b are connected and arranged in parallel with the flat plate heat storage element 14 interposed therebetween.

  Further, when performing the heat storage operation and the heat radiation operation at the same time, heat is exchanged from the heating fluid to the heat radiation fluid via the heat radiator 15 without using the flat plate heat storage agent 14.

  In addition, since the ninety-nine folds 18a are arranged on the intermediate plate 18, the heat transfer area between the fluid and the heat radiator 15 is increased, and the fluid flowing through the heating flow path 8 and the heat radiation path 11 is increased. Is disturbed by the dimple processing 18b and becomes a turbulent state, and the heat transfer coefficient between the fluid and the heat radiator 15 increases. Further, since the heat radiator 15 is configured to be axially symmetric with respect to the central axis, there is no distinction between the front and back sides.

  As described above, in the present embodiment, the inlets of the heating channel 8 of the three heat radiators 15 are connected in parallel to provide the heating inlet pipe 7, and the outlets of the heating channel 8 are connected in parallel. Connected and provided with a heating outlet pipe 9, connected to the inlet of the heat radiating flow path 11 in parallel to provide a heat radiating inlet pipe 10, connected the outlet of the heat radiating flow path 11 in parallel to provide a heat radiating outlet pipe 12, The state heat storage body 14 has a structure in which one surface is in close contact with the heating flow path 8 and the other surface is in close contact with the heat dissipation flow path 11 in a space sandwiched between the heat radiators 15 so as to be in close contact with one surface. Heat is efficiently received and stored from the heated fluid flowing in the flow path 8, and heat is efficiently radiated to the fluid flowing in the heat dissipation flow path 11 that is in close contact with the other surface.

  Further, the heat radiator 15 joins the front inlet pipe 19 a and the front outlet pipe 20 a to the front plate 16, and joins the rear inlet pipe 21 a and the rear outlet pipe 22 a to the back plate 17. A portion that is adjacent to the inlet pipe 19a and the front outlet pipe 20a, and a notch portion 23 provided in a portion adjacent to the back inlet pipe 21a and the back outlet pipe 22a of the back plate 17, and corresponds to the notch portion 23 of the intermediate plate 18 Are provided with a front inlet pipe 19b, a front outlet pipe 20b, a back inlet pipe 21a, and a back outlet pipe 22b. The inlet pipe 19b is connected in order to form the heating inlet pipe 7, the front outlet pipe 20a and the front outlet pipe 20b are connected in order to form the heating outlet pipe 9, and the back of the plurality of heat radiation channels 11 The radiation pipe 11 is constructed by connecting the inlet pipe 21a and the back inlet pipe 21b in order. And, it constitutes the heat dissipation outlet line 12 connects the back outlet pipe 22a and a back outlet pipe 22b in sequence.

  As a result, heating fluid and heat dissipation fluid can be separated, and a large volume of heat can be efficiently stored and taken out efficiently with a simple configuration without adding special parts such as a heat exchanger. Can do.

  Further, when the heat storage operation and the heat radiation operation are performed at the same time, heat is exchanged from the heating fluid to the heat radiation fluid via the heat radiator 15 without using the flat plate heat storage agent 14, and heat can be used efficiently.

  Further, since the heat radiator 15 is configured to be axially symmetric with respect to the central axis, it can be assembled without making a distinction between the front and back sides. The radiator 15 is preferably made of copper or stainless steel. In the present embodiment, the case of the three heat radiators 15 has been described. However, for example, the number may be two or ten.

(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 radiator 15 includes a straight pipe 24 perpendicularly joined to the surfaces of the front plate 16 and the back plate 17, and an outer diameter of the straight pipe 24 joined to the surface of the intermediate plate 15 coaxial with the straight pipe 24. An outer tube 25 having a large inner diameter, 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 heat radiator 15 is sequentially inserted into the outer tube 25 of another heat radiator 15, and a plurality of heaters 15 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 heat radiator 15 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 arranged between the sheets of heat radiator 15 is different, the length of the straight tube 24 inserted into the outer tube 25 is changed to change the heat radiator 15 and the flat plate heat storage body. 14 can be firmly maintained, so that a highly reliable and high performance apparatus can be realized.

(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 heating flow path 8 and the heat radiation flow path 11 are constituted by flow paths that connect the inlet and the outlet in one 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 heat radiators 15 are connected in parallel to flow a heating fluid, the heating fluid is branched from the heating inlet pipe 7, flows to each heating flow path 8, joins the heating outlet pipe 9, and flows. Therefore, when flowing a radiating fluid, it branches from the radiating inlet pipe 10, flows into each radiating flow passage 11, joins the radiating outlet pipe 12, and flows.

  As described above, in the present embodiment, the heating flow path 8 and the heat dissipation flow path 11 are configured by a flow path that connects the inlet and the outlet with one path, so that a large number of the heating flow paths 8 and the heat dissipation flow paths 11 are formed. Even in the configuration connected in parallel, the flow rate of the heating fluid flowing through each heating channel 8 is made uniform, and the flow rate of the radiating fluid flowing through each radiation channel 11 is made uniform. It can stabilize and perform 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 heat radiator 15 is provided with a bent portion 28 around it, and is configured with the left and right end bending directions reversed and the upper and lower end bending directions reversed.

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

  First, when the flat plate heat storage body 14 is provided in close contact with the heat radiator 15, the side surface of the flat plate 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 radiator 15 so that the distortion of the surface of the radiator 15 is corrected by the bent portion 28 and the bent portion 28 is corrected. Since the flat plate heat storage body 14 is disposed in the space surrounded by the plate, 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 and improve the 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, the plurality of arrangements including the heat radiator 15 and the flat plate heat storage body 14 are provided with a belt-like fastening body 29 around the periphery, and are fastened by the belt-like fastening body 29 on both surfaces of the flat plate heat storage body 14. The heat radiator 15 is firmly fixed and fixed.

  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 composed of the heat radiator 15 and the flat plate heat storage body 14 is fastened with a band-shaped fastening body 29, and the heat radiator 15 is closely fixed to both surfaces of the flat plate heat storage body 14 to fix the position of the pipe connection. Will be.

  As described above, in the present embodiment, the plurality of arrays including the heat radiator 15 and the plate-like heat storage body 14 are configured by providing the belt-like fastening body 29 around the both sides of the plate-like heat storage body 14. In this case, the heat radiator 15 is firmly fixed and fixed.

  As a result, the heat storage / dissipation operation for storing heat from the heat radiator / radiator 15 to the flat plate heat accumulator 14 and radiating heat from the flat plate heat accumulator 14 to the heat radiator / radiator 15 is performed with high performance. 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) Perspective view of the heat storage device in Embodiment 1 of the present invention (b) Front view of the heat storage device (c) AA sectional view of FIG. 2 (b) (d) FIG. 2 (b) 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 7 Heating inlet pipe 8 Heating flow path 9 Heating outlet pipe 10 Heat radiation inlet pipe 11 Heat radiation flow path 12 Heat radiation outlet pipe 13 Heating circulation circuit 14 Heat storage body 15 Heat radiator 16 Front plate 17 Back plate 18 Middle plate 18a Nine Ninefold section 18b Dimple processing 19a Front inlet pipe 19b Front inlet pipe 20a Front outlet pipe 20b Front outlet pipe 21a Back inlet pipe 21b Back inlet pipe 22a Back outlet pipe 22b Back outlet pipe 23 Notch 24 Straight pipe 25 Outer pipe 26 Ring-shaped concave portion 27 O-ring 28 Bending portion 29 Band-shaped fastening body

Claims (11)

Heating channel of the flow of heating fluid, the heat radiation passage through the radiator fluid, have a, and a plurality of pressurized radiator for exchanging heat between the heat radiation fluid and the heating fluid,
And a regenerator that is disposed on a plurality of said sandwiched pressurized radiator space,
The inlets of the plurality of heating channels and the inlets of the plurality of heat dissipation channels are respectively connected in parallel to form a heating inlet line and a heat dissipation inlet line,
The outlets of the plurality of heating channels and the outlets of the plurality of heat radiation channels are respectively connected in parallel to form a heating outlet pipe and a heat radiation outlet pipe,
The heat storage device is characterized in that the heat storage body is in close contact with both the heating channel and the heat dissipation channel . The heating channel, the heat dissipation flow path to claim 1, characterized in that it is formed by joining the intermediate plate being sandwiched by the front plate and the back plate and the table plate and the back plate The heat storage device described. The heat storage device according to claim 2, wherein a ninety-nine fold portion is provided on the intermediate plate. The heat storage device according to claim 2 , wherein an uneven portion is provided on the intermediate plate. The heat storage device according to claim 1 , wherein the heat radiator has an axisymmetric shape with respect to a central axis. A straight pipe joined to one of the heat radiators; and an outer pipe coaxially with the straight pipe and joined to the other heat radiator / radiator; a concave portion on the inner peripheral surface of the outer pipe; and a seal member on the concave portion the provided, the insert the straight pipe into the outer pipe, the inlet pipe and the serial mounting of the heat storage device any one of claims 1 to 5, characterized by forming the outlet conduit. Said inlet conduit and said outlet conduit, any one of the preceding claims, characterized in that a configuration in which each communicating at watercourse of the heating channel and / or the radiator flow channel heat storage device as claimed in. The heat storage device according to claim 1 , wherein 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 heat radiator is formed of copper or stainless steel. The water heater provided with the thermal storage apparatus of any one of the said Claims 1-10 .