Heat exchanger

Abstract

To provide a heat exchanger which can recover heat at high efficiency and can be implemented in a compact size.SOLUTION: A heat exchanger 1 includes a heat exchanger body 2 having: a flow inlet 11 into which a high-temperature fluid flows, the high-temperature fluid being a heat exchanging fluid which is discharged using positional energy via a water discharge pipe 12 serving as a discharge pipe at a predefined height from a high-temperature or low-temperature heat source; a high-temperature fluid circulation path 10 as a heat exchanging fluid circulation path in which the high-temperature fluid flowing from the flow inlet 11 circulates; a flow outlet 13 from which the high-temperature fluid that has passed through the high-temperature fluid circulation path 10 flows out; and a water supply pipe 20 which is inserted from a side of the flow outlet 13, passes through the high-temperature fluid circulation path 10, and serves as a heat-exchanged fluid pipe in which water as heat exchanged fluid is supplied from which heat is exchanged with the high-temperature fluid in a direction opposite to a direction of flow of the high-temperature fluid. An entire top surface opening of the high-temperature fluid circulation path 10 is closed by a cover body 11a as a closing member. A height position of the flow outlet 13 is set lower than a predefined height of the water discharge pipe 12 and higher than a height position of the cover body 11a.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a heat exchange device that exchanges heat between a high-temperature or low-temperature heat exchange fluid and a heat-receiving fluid supplied to a heat-receiving fluid pipe. [Background technology]

[0002] Conventionally, high-temperature or low-temperature wastewater generated from factories and various plants is simply discharged outside and disposed of. In the case of high-temperature wastewater, for example, fossil fuels are burned to raise the temperature, so recovering heat from the wastewater can save energy and also lead to a reduction in carbon dioxide emissions.

[0003] Many heat exchangers capable of recovering heat from such wastewater have been proposed.

[0004] In this context, for example, Patent Document 1 discloses a heat exchange device configured such that potential energy is utilized within a heat exchange fluid circulation path to circulate the heat exchange fluid from an inlet to an outlet, and the heat exchange fluid flows in a counterflow direction relative to the heat-exchanged fluid with which it is heat-exchanged. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] U.S. Patent No. 4,291,423 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in such conventional heat exchange devices, the heat exchange fluid used for heat exchange in the heat exchange fluid circulation path immediately flows out of the outlet even though it is still at a temperature at which heat exchange can be performed, making it difficult to recover heat efficiently and, as a result, there was a problem that it could not be made more compact.

[0007] Therefore, the present invention has been made in consideration of the above circumstances, and its object is to provide a heat exchanger that can recover heat with high efficiency and can be implemented in a more compact size. [Means for solving the problem]

[0008] In order to achieve the above object, the invention described in claim 1 comprises a heat exchange device body having an inlet through which a heat exchange fluid flows in and is discharged from a high-temperature or low-temperature heat source through a discharge pipe at a predetermined height using potential energy, a heat exchange fluid circulation path through which the heat exchange fluid flowing in from the inlet circulates, an outlet through which the heat exchange fluid that has passed through the heat exchange fluid circulation path flows out, and a heat exchange fluid piping that is inserted from the outlet side, passes through the heat exchange fluid circulation path, and is supplied with a heat exchange fluid that exchanges heat with the heat exchange fluid in a direction opposite to the flow direction of the heat exchange fluid, wherein the entire top opening of the heat exchange fluid circulation path is blocked by a blocking member, and the height position of the outlet is set lower than the predetermined height of the discharge pipe and higher than the height position of the blocking member.

[0009] The invention described in claim 2 is characterized in that, in the invention described in claim 1, the inlet is formed by an inlet-forming tubular member that protrudes above the blocking member.

[0010] The invention as set forth in claim 3 is characterized in that in the invention as set forth in claim 1, the closing member is an openable and closable lid.

[0011] The invention described in claim 4 is characterized in that, in the invention described in claim 3, the lid body, which is the blocking member, is made of a rigid plate material and a sealing material, the lid body is removably fixed to the heat exchange device main body by a clamp, the sealing material abuts and seals the upper end of the partition wall that forms the side of the heat exchange fluid circulation path, and the entire upper opening of the heat exchange fluid circulation path is blocked.

[0012] The invention described in claim 5 is characterized in that, in the invention described in claim 1, a purification tank for purifying the heat exchange fluid is provided on the upper part of the heat exchange device main body, the discharge pipe and the inlet are connected to the purification tank, and the heat exchange fluid discharged from the discharge pipe is purified and flows into the inlet.

[0013] The invention described in claim 6 is characterized in that, in the invention described in claim 1, the heat exchange fluid circulation path through which the heat exchange fluid flows is formed in a spiral shape by a plate-shaped partition, both sides of the plate-shaped partition are the heat exchange fluid circulation path, the discharge pipe extends from the heat source outside the heat exchange device main body and is arranged so as to discharge the heat exchange fluid to the upper part of the heat exchange device main body, and the heat-exchanged fluid piping is arranged from the outer periphery of the heat exchange device main body through the spiral-shaped heat exchange fluid circulation path toward its center, extends upward from the central position, and further extends to the outside of the heat exchange device main body.

[0014] The invention as set forth in claim 7 is characterized in that, in the invention as set forth in claim 1, the heat exchange fluid pipes are provided in a plurality of stages or rows. [Effects of the Invention]

[0015] According to the invention described in claim 1, the heat exchange fluid flowing in from the inlet always fills the heat exchange fluid circulation path, and is discharged from the outlet after sufficient heat exchange has taken place between the heat exchange fluid and the heat exchange fluid supplied in the opposite direction to the flow direction of the heat exchange fluid, thereby enabling heat recovery with high efficiency and making the system more compact.

[0016] According to the invention described in claim 1, the heat exchange fluid is configured to flow into the inlet by potential energy, so there is no need for a tank to store the heat exchange fluid or a pump to supply the heat exchange fluid, which simplifies the structure and makes it easy to manufacture.

[0017] According to the invention as set forth in claim 2, the inlet can be easily formed by using the inlet-forming tubular member.

[0018] According to the invention as set forth in claim 3, the heat exchange fluid circulation path can be easily cleaned by opening the cover, which is the closing member.

[0019] According to the invention as set forth in claim 4, the entire upper surface opening of the heat exchange fluid circulation path can be more firmly closed to prevent leakage of the heat exchange fluid.

[0020] According to the invention described in claim 5, the heat exchange fluid is purified in a purification tank before being introduced through the inlet, which reduces the frequency of maintenance such as cleaning of the heat exchange fluid circulation path, resulting in a structure that is less labor-intensive.

[0021] According to the invention described in claim 6, the heat exchange fluid circulation path and the heat exchange fluid piping are formed in a spiral shape, so that the height of the heat exchange device body can be made extremely low, making it possible to implement it in an even more compact manner.

[0022] According to the seventh aspect of the present invention, the heat exchange fluid pipes are provided in a plurality of stages or rows, so that the amount of heat exchange can be increased. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the heat exchanger according to the first embodiment with the lid body open. [Figure 3] FIG. 1 is a plan view showing a schematic configuration of a heat exchanger according to a first embodiment. [Figure 4] FIG. 2 is a plan view showing the heat exchanger according to the first embodiment with the lid open. [Figure 5] FIG. 10 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger according to a comparative example. [Figure 6] FIG. 10 is a plan view showing the heat exchanger of this comparative example with the lid open. [Figure 7] FIG. 4 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger according to a second embodiment of the present invention. [Figure 8] FIG. 10 is a vertical cross-sectional view showing the heat exchanger according to the second embodiment with the lid body open. [Figure 9] FIG. 2 is a plan view showing a schematic configuration of a heat exchanger according to the second embodiment. [Figure 10] FIG. 10 is a plan view showing the heat exchanger according to the second embodiment with the lid open. [Figure 11] FIG. 4 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger according to a third embodiment of the present invention. [Figure 12] FIG. 10 is a plan view showing a schematic configuration of a heat exchanger according to a third embodiment. [Figure 13] FIG. 10 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger according to a fourth embodiment of the present invention. [Figure 14] FIG. 10 is a plan view showing a schematic configuration of a heat exchanger according to a fourth embodiment. [Figure 15] FIG. 10 is a plan view showing a heat exchanger according to a fifth embodiment of the present invention with the lid body open. [Figure 16] FIG. 10 is a plan view showing a schematic configuration of a heat exchanger according to a fifth embodiment. [Figure 17] FIG. 10 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger according to a fifth embodiment. [Figure 18] FIG. 10 is a vertical cross-sectional view showing the heat exchanger according to the fifth embodiment with the lid body open. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, each embodiment of the present invention will be described in detail with reference to the drawings. [First embodiment] FIG. 1 is a longitudinal sectional view showing a schematic configuration of a heat exchanger according to a first embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing the heat exchanger according to the first embodiment with the lid open. FIG. 3 is a plan view showing a schematic configuration of the heat exchanger according to the first embodiment. FIG. 4 is a plan view showing the heat exchanger according to the first embodiment with the lid open. In the following embodiments, an example will be described in which a high-temperature fluid is used as the heat exchange fluid discharged by potential energy, and supply water such as tap water is used as the low-temperature heat exchange fluid that exchanges heat with the high-temperature fluid.

[0025] As shown in Figures 1 to 4, the heat exchanger 1 according to the first embodiment comprises a heat exchanger main body 2 that is generally circular in plan view, and the heat exchanger main body 2 has a high-temperature fluid circulation path 10 as a heat exchange fluid circulation path through which a high-temperature fluid circulates, and a water supply pipe 20 as a heat-exchanged fluid pipe that passes through the high-temperature fluid circulation path 10 and is supplied in the opposite direction to the flow of the high-temperature fluid.

[0026] The high-temperature fluid circulation path 10 is formed in a spiral shape from the center position toward the outside of the heat exchanger body 2. The water supply pipe 20 is formed in a spiral shape along the high-temperature fluid circulation path 10 from the outer periphery of the heat exchanger body 2 toward the center position of the heat exchanger body 2.

[0027] An inlet 11 is disposed at the center of the heat exchanger body 2, through which a high-temperature fluid flows in. The high-temperature fluid is discharged by utilizing potential energy through a drainage pipe 12, which serves as a discharge pipe at a predetermined height. This high-temperature fluid is, for example, high-temperature wastewater generated from a heat source such as a factory. The drainage pipe 12 for the high-temperature fluid is detachably attached to the heat exchanger body 2. The inlet 11 is connected to an outlet 13 through a high-temperature fluid circulation path 10. The outlet 13 is disposed on the outer periphery of the heat exchanger body 2. As shown in FIGS. 1 and 3 , the entire top opening of the high-temperature fluid circulation path 10 is closed by a closure member, lid 11a, which is detachably attached by a retainer 11b and is formed by a spirally continuous partition wall 14. The entire high-temperature fluid circulation path 10 is filled with high-temperature fluid with no air gap, and the entire outer surface of the supply water pipe 20 is constantly immersed in the high-temperature fluid within the high-temperature fluid circulation path 10.

[0028] Here, the inlet 11 is formed by an inlet-forming tubular member 111 that protrudes above the lid 11a, which is a blocking member.

[0029] In addition, the height position of the outflow outlet 13 is set lower than the specified height of the drainage pipe 12 and the position of the inlet opening at the top of the tubular member 111 for forming the inflow port, and higher than the height position of the bottom surface of the lid body 11a, which is the blocking member.

[0030] The water supply pipes 20 are provided in two vertical stages. The two stages of water supply pipes 20 are provided with a common water supply port 21 as a supply port inserted into the high-temperature fluid outlet 13 side, and a common drain port 22 as a drain port through which water such as tap water that has passed through the water supply pipes 20 and exchanged heat with the high-temperature fluid is discharged. The water supply pipes 20 are made of metal such as carbon steel, stainless steel, titanium, aluminum, copper, or an alloy thereof, or rubber tubing, or resin. The side wall 200 of the heat exchanger body 2 is formed in a generally circular shape in a plan view. The partition wall 14 and the cover 11a are made of a rigid body such as steel.

[0031] Furthermore, the drainage pipe 12 extends from a heat source outside the heat exchanger body 2 and is arranged to discharge high-temperature fluid to the top of the heat exchanger body 2, and the water supply pipe 20 is arranged from the outer periphery of the heat exchanger body 2 through the spiral high-temperature fluid circulation path 10 toward its center, extending upward from this central position and further extending to the outside of the heat exchanger body 2.

[0032] Next, the effects of the heat exchanger 1 according to the first embodiment will be described.

[0033] First, high-temperature wastewater as a high-temperature fluid generated from a heat source such as a factory is driven by potential energy and discharged through drainage pipe 12 to inlet 11 disposed at the center of heat exchanger body 2. Then, the high-temperature wastewater flows into high-temperature fluid circulation path 10 formed in a spiral shape by partition wall 14. After flowing through spiral-shaped high-temperature fluid circulation path 10, the high-temperature wastewater flows out from outlet 13.

[0034] On the other hand, water is supplied from a water supply port 21 inserted on the high-temperature fluid outlet 13 side, and this water passes through a spiral water supply pipe 20 arranged along the high-temperature fluid circulation path 10 and is discharged from a drain outlet 22 on the inlet 11 side.

[0035] Here, the flow direction of the high-temperature fluid flowing through the high-temperature fluid circulation path 10 and the flow direction of the feedwater flowing through the feedwater piping 20 are opposite but parallel to each other, forming a complete counterflow. The high-temperature fluid flows through the single high-temperature fluid circulation path 10, while the feedwater flows through the feedwater piping 20 in a single direction opposite to the flow of the high-temperature fluid, thereby performing heat exchange, making it possible to recover heat with high efficiency. In addition, the entire outer surface of the feedwater piping 20 is always immersed in the high-temperature fluid within the high-temperature fluid circulation path 10, making it possible to recover heat with even higher efficiency.

[0036] Furthermore, since the high-temperature wastewater is discharged to the inlet-forming tubular member 111 via the drainage pipe 12 by potential energy, a tank for storing the high-temperature fluid and a pump for supplying the high-temperature fluid are not required.

[0037] According to the heat exchange device 1 of the first embodiment of the present invention described above, the high-temperature fluid flowing in from the inlet 11 always fills the high-temperature fluid circulation path 10, and is discharged from the outlet 13 after sufficient heat exchange has taken place between the high-temperature fluid and the feed water supplied in the opposite direction to the flow of the high-temperature fluid, thereby enabling highly efficient heat recovery and enabling implementation in a more compact size.

[0038] Furthermore, according to the heat exchange device 1 of this first embodiment, the high-temperature fluid as the heat exchange fluid flows into the inlet 11 by potential energy, so that a tank for storing the high-temperature fluid and a pump for supplying the high-temperature fluid are not required, and the structure is simplified and can be easily manufactured.

[0039] Furthermore, according to the heat exchanger 1 according to the first embodiment, the inflow port 11 can be easily formed by using the inflow port forming tubular member 111.

[0040] Furthermore, according to the heat exchanger 1 according to the first embodiment, the high-temperature fluid circulation path 10 can be easily cleaned by opening the cover 11a, which is a closing member.

[0041] Furthermore, according to the heat exchanger 1 of this first embodiment, the high-temperature fluid circulation path 10 and the water supply pipe 20 are formed in a spiral shape, so that the height of the heat exchanger main body 2 can be made extremely low, and the heat exchanger can be implemented in an even more compact manner.

[0042] Furthermore, according to the heat exchanger 1 according to the first embodiment, the water supply pipes 20 are provided in multiple stages (for example, two stages) in the vertical direction, so that the amount of heat exchange can be increased.

[0043] Next, the differences in the effects and functions between the heat exchanger 1 according to the first embodiment and the heat exchanger 1' of the comparative example will be described.

[0044] Fig. 5 is a vertical cross-sectional view showing a schematic configuration of a heat exchanger of a comparative example, and Fig. 6 is a plan view showing the heat exchanger of this comparative example with the lid open.

[0045] As shown in Figures 5 and 6, the heat exchange device 1' of this comparative example differs from the heat exchange device 1 of the first embodiment in that it is a so-called open type in which the top is open and the high-temperature fluid flows within the heat exchange fluid circulation path 10' so as to have a gap above it.

[0046] Because the heat exchanger 1' of this comparative example is an open-type heat exchanger, the high-temperature fluid level is highest at the inlet 11' and gradually decreases toward the outlet 13'. Therefore, in the heat exchanger 1' of this comparative example, the partition wall 14' must be elevated within the heat exchange fluid circulation path 10' to ensure a large flow path for the high-temperature fluid above the water supply pipe 20. In contrast, the heat exchanger 1 of the first embodiment is a closed-type heat exchanger, in which the heat exchange fluid circulation path 10 is filled with high-temperature fluid, allowing the height to be reduced at locations other than the inlet 11, resulting in a more compact design. Furthermore, in the heat exchanger 1' of the comparative example, the partition wall 14' must be elevated to increase the height of the heat exchanger body 2', which increases the material costs for manufacturing. However, in the heat exchanger 1 of the first embodiment, the height of the heat exchanger body 2 can be reduced at locations other than the inlet 11, thereby reducing the material costs for manufacturing.

[0047] Furthermore, in the heat exchanger 1' of the comparative example, the water level of the high-temperature fluid rises and falls in the heat exchange fluid circulation path 10', causing dirt and residue to adhere to the partition wall 14', making cleaning difficult. In contrast, in the heat exchanger 1 according to the first embodiment, the heat exchange fluid circulation path 10 is filled with high-temperature fluid, making it difficult for dirt and residue to adhere, and making cleaning easier. [Second embodiment] Fig. 7 is a longitudinal sectional view showing the schematic configuration of a heat exchanger according to a second embodiment of the present invention. Fig. 8 is a longitudinal sectional view showing the heat exchanger according to the second embodiment with the lid open. Fig. 9 is a plan view showing the schematic configuration of the heat exchanger according to the second embodiment. Fig. 10 is a plan view showing the heat exchanger according to the second embodiment with the lid open. In this second embodiment, parts that are the same as or correspond to those in the first embodiment described above are given the same reference numerals, and descriptions thereof will be omitted, and only configurations and effects that are different from those in the first embodiment will be described.

[0048] In the heat exchanger 1A according to the second embodiment, as shown in Figures 7 to 10, the cover 11a, which is a closing member, is made of a rigid plate material 11A such as steel and a sealing material 11B, and the cover 11a is removably fixed to the heat exchanger main body 2A by one-touch clamps 11b1 and 11b2, and the sealing material 11B abuts against and seals the upper end of the partition wall 14 that forms the side of the high-temperature fluid circulation path 10, thereby closing the entire upper opening of the high-temperature fluid circulation path 10.

[0049] Here, the sealing material 11B closes the upper edge of the partition wall 14, improving the watertightness of the lid 11a, which is a closing member.

[0050] As shown in FIG. 7, the upper end 14a of the partition wall 14 is widened to increase the contact surface with the seal material 11B, thereby increasing the degree of sealing between the partition wall 14 and the lid 11a.

[0051] In addition, the lid body 11a, which is a blocking member, is divided into four pieces, and is clamped by clamping members 11b1 to fix the periphery, and is fixed to the fixing base portion 11c by clamping members 11b2, and is firmly fixed to the heat exchanger main body 2A.

[0052] According to the heat exchange device 1A of this second embodiment, even when the pressure inside the high-temperature fluid circulation path 10 becomes high in the lid body 11a, the high-temperature fluid inside the high-temperature fluid circulation path 10 can be more tightly closed to prevent leakage of the high-temperature fluid.

[0053] Specifically, by dividing the lid body 11a into a plurality of parts, the number of retainers 11b1 and 11b2 can be increased, and the lid body 11a can be closed more firmly.

[0054] Furthermore, by using the sealing material 11B, the upper edge of the partition wall 14 can be sealed, improving the watertightness of the lid 11a, which is a sealing member, and the lid 11a can be sealed more firmly.

[0055] Furthermore, the upper end 14a of the partition 14 is widened to increase the contact surface with the seal material 11B, thereby increasing the degree of sealing between the partition 14 and the lid 11a, thereby enabling the lid 11a to be closed more firmly. [Third embodiment] Fig. 11 is a longitudinal sectional view showing a schematic configuration of a heat exchanger according to a third embodiment of the present invention. Fig. 12 is a plan view showing a schematic configuration of a heat exchanger according to the third embodiment. In this third embodiment, parts that are the same as or correspond to those in the first embodiment are given the same reference numerals and their description will be omitted, and only the configuration and effects that are different from those in the first embodiment will be described.

[0056] In this third embodiment of the heat exchanger 1B, as shown in Figures 11 and 12, a purification tank 30 for purifying high-temperature fluid is provided on the top of the heat exchanger main body 2B, and a drainage pipe 12 and an inlet 11 are connected to the purification tank 30, so that the high-temperature fluid discharged from the drainage pipe 12 is purified and flows into the high-temperature fluid circulation path 10 from the inlet 11.

[0057] Here, a mesh filter 31 is provided as a purification means in the septic tank 30 on the side of the drainage pipe 12 so as to be able to purify the high-temperature fluid.

[0058] According to the heat exchange device 1B of this third embodiment, the high-temperature fluid is purified in the purification tank 30 before being introduced through the inlet 11, which reduces the frequency of maintenance such as cleaning of the high-temperature fluid circulation path 10, thereby resulting in a structure that is less time-consuming.

[0059] Furthermore, as described above, the heat exchanger 1B according to the third embodiment can be made more compact than the comparative heat exchanger 1', and therefore the space created by the compact design above the heat exchanger main body 2B can be used to install a septic tank 30. [Fourth embodiment] Fig. 13 is a longitudinal sectional view showing a schematic configuration of a heat exchanger according to a fourth embodiment of the present invention. Fig. 14 is a plan view showing a schematic configuration of a heat exchanger according to the fourth embodiment. In this fourth embodiment, parts that are the same as or correspond to those in the first embodiment described above are given the same reference numerals and their description will be omitted, and only the configuration and effects that are different from those in the first embodiment will be described.

[0060] In a heat exchanger 1C according to the fourth embodiment, as shown in FIGS. 13 and 14, a closing member 11a is provided integrally with a heat exchanger body 2C, rather than being provided as a lid.

[0061] The heat exchange device 1C according to the fourth embodiment is suitable for cases where the high-temperature fluid used is, for example, steam drain water or blown water that is almost free of dirt or foreign matter, and where little maintenance such as cleaning of the high-temperature fluid circulation path 10 is required.

[0062] According to the heat exchanger 1C of the fourth embodiment, since the closing member 11a is not a lid, the heat exchanger 1C can be implemented at low cost with a simpler configuration. [Fifth embodiment] Fig. 15 is a plan view showing a heat exchanger according to a fifth embodiment of the present invention with the lid open. Fig. 16 is a plan view showing a schematic configuration of the heat exchanger according to the fifth embodiment. Fig. 17 is a longitudinal sectional view showing a schematic configuration of the heat exchanger according to the fifth embodiment. Fig. 18 is a longitudinal sectional view showing a heat exchanger according to the fifth embodiment with the lid open. In this fifth embodiment, parts that are the same as or correspond to those in the first embodiment described above are given the same reference numerals and their description will be omitted, and only configurations and effects that are different from those in the first embodiment will be described.

[0063] In a heat exchanger 1D according to the fifth embodiment, as shown in FIGS. 15 to 18, the high-temperature fluid circulation path 10 and the water supply pipe 20 are formed in a zigzag labyrinth shape.

[0064] According to the heat exchanger 1D of the fifth embodiment, the high-temperature fluid circulation path 10 and the water supply pipe 20 are formed in a zigzag labyrinth shape, and therefore the heat exchanger 1D can be implemented at low cost with a simpler configuration.

[0065] The embodiment described above is an example of the present invention, and it goes without saying that the present invention is not limited to the above embodiment. In other words, the specific configurations and specific procedures of the above embodiment can be variously modified without departing from the spirit of the present invention.

[0066] For example, in the above-described embodiment, a high-temperature fluid is used as the heat exchange fluid, and a low-temperature heat-exchanged fluid is used to exchange heat with the high-temperature fluid. However, this is not limited to this, and the embodiment may also be implemented by using a low-temperature fluid as the heat exchange fluid, and a high-temperature heat-exchanged fluid is used to exchange heat with the low-temperature fluid. [Explanation of symbols]

[0067] 1,1A,1B,1C,1D Heat exchange equipment 2,2A,2B,2C,2D Heat exchanger body 10 High temperature fluid circulation path (heat exchange fluid circulation path) 11 Inlet 111 Tubular member for forming inlet 12 Drainage piping (discharge pipe) 13 Outlet 14 Bulkhead 14a Upper end of bulkhead 11a Lid (closing member) 11A Rigid plate material 11B Sealing material 11b, 11b1, 11b2 clamp 11c Fixing base 20 Water supply piping (heat exchange fluid piping) 21 Water supply port (supply port) 22 Drain port (discharge port) 200 Side wall 30 Septic Tank 31 Mesh filter (purification means)

Claims

1. an inlet into which a heat exchange fluid flows that is discharged from a heat source having a high or low temperature by utilizing potential energy through a discharge pipe at a predetermined height; a heat exchange fluid circulation path through which the heat exchange fluid flowing in from the inlet circulates; an outlet through which the heat exchange fluid that has passed through the heat exchange fluid circulation path is discharged; a heat exchange fluid piping inserted from the outlet side, passing through the heat exchange fluid circulation path, and into which a heat exchange fluid to be heat exchanged with the heat exchange fluid is supplied in a direction opposite to the flow direction of the heat exchange fluid, the entire upper surface opening of the heat exchange fluid circulation path is closed by a closing member; A heat exchange device, characterized in that the height position of the outlet is set lower than the predetermined height of the discharge pipe and higher than the height position of the closing member.

2. 2. The heat exchange device according to claim 1, wherein the inlet is formed by an inlet-forming tubular member that protrudes above the closing member.

3. 2. The heat exchanger according to claim 1, wherein the closing member is an openable and closable lid.

4. The heat exchange device described in claim 3, characterized in that the lid body, which is the blocking member, is made of a rigid plate material and a sealing material, the lid body is removably fixed to the heat exchange device main body by a clamp, the sealing material abuts and seals the upper end of the partition wall that forms the side of the heat exchange fluid circulation path, and the entire upper opening of the heat exchange fluid circulation path is blocked.

5. The heat exchange device of claim 1, characterized in that a purification tank for purifying the heat exchange fluid is provided on the upper part of the heat exchange device body, the exhaust pipe and the inlet are connected to the purification tank, and the heat exchange fluid discharged from the exhaust pipe is purified and flows into the inlet.

6. the heat exchange fluid circulation path through which the heat exchange fluid flows is formed in a spiral shape by a plate-like partition wall, and both sides of the plate-like partition wall are the heat exchange fluid circulation paths, the discharge pipe extends from the heat source outside the heat exchanger body and is arranged to discharge the heat exchange fluid to an upper portion of the heat exchanger body; The heat exchange device of claim 1, characterized in that the heat exchange fluid piping is arranged from the outer periphery of the heat exchange device body through the spiral-shaped heat exchange fluid circulation path toward its center, extends upward from the center position, and further extends to the outside of the heat exchange device body.

7. 2. The heat exchange device according to claim 1, wherein the heat exchange fluid pipes are provided in a plurality of stages or rows.

Images