Waste cold or waste heat recovery device for solving condensation in limited space

By using semicircular heat exchange tubes and H-shaped fins in the underground limited space, combined with water-cooling unit and ventilation unit, the condensation problem is solved, efficient recovery of residual cold or waste heat and space drying is achieved, and safety and energy-saving effects are improved.

CN223191866UActive Publication Date: 2025-08-05XIONGAN XIONGSHANG DEVELOPMENT CO LTD
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Patent Information

Application Number
CN202422415600.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-08
Publication Date
2025-08-05
Estimated Expiration
2034-10-08

AI Technical Summary

Technical Problem

The condensation problem in limited underground space threatens the safe operation of municipal facilities, and the existing technology is difficult to effectively recover residual cold or waste heat.

Method used

A residual cooling or waste heat recovery device is designed, using semicircular heat exchange pipes and H-type heat exchange fins, arranged closely to the wall, and an explosion-proof fan can be optionally equipped with a water-cooled VWV unit and ventilation unit to achieve the recovery of residual cooling or waste heat and the elimination of condensation.

Benefits of technology

It enhances the heat exchange area and efficiency, effectively eliminates condensation, improves the safety and energy-saving benefits of limited space, and forms a virtuous cycle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a waste cold or waste heat recovery device for solving condensation in a limited space, which comprises a water supply inlet, a heat exchange tube, a return water outlet and heat exchange fins, and the water supply inlet, the heat exchange tube and the return water outlet are communicated in sequence; the heat exchange fins are tightly attached to the peripheral wall of the heat exchange pipe. At least one part of the peripheral wall of the heat exchange pipe is tightly laid on the wall of the limited space and is used for recovering residual cold or residual heat in the limited space; the water supply inlet is communicated with one end of a water supply pipe; the other end of the water supply pipe is communicated with a water outlet of the water-cooling VWV unit; the return water outlet is communicated with one end of a return water pipe; and the other end of the water return pipe is communicated with a water return port of the water-cooling VWV unit.
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Description

Technical Field

[0001] The utility model relates to the technical field of surplus cold or waste heat recovery, and particularly relates to a surplus cold or waste heat recovery device for solving condensation in a limited space. Background Art

[0002] With the development of cities, urban underground municipal facilities have gradually become complete. At the same time, there are more and more underground limited spaces, and the condensation problem in underground limited spaces has increasingly become a hidden danger threatening the safe operation of underground municipal facilities. Summary of the Invention

[0003] The utility model aims to provide a surplus cold or waste heat recovery device for solving condensation in a limited space. The technical problems to be solved at least include how to eliminate condensation in the limited space and at the same time recover the surplus cold or waste heat in the limited space.

[0004] To achieve the above object, the utility model provides a surplus cold or waste heat recovery device for solving condensation in a limited space, which includes a water supply inlet, a heat exchange tube, a water return outlet and heat exchange fins. The water supply inlet, the heat exchange tube and the water return outlet are connected in sequence; the heat exchange fins are closely attached to the outer peripheral wall of the heat exchange tube; at least a part of the outer peripheral wall of the heat exchange tube is closely laid on the wall of the limited space for recovering the surplus cold or waste heat in the limited space; the water supply inlet is connected to one end of a water supply pipe; the other end of the water supply pipe is connected to the water outlet of a water-cooled VWV unit; the water return outlet is connected to one end of a water return pipe; the other end of the water return pipe is connected to the water return port of the water-cooled VWV unit; the heat exchange tube includes a flat part and an arc part, and the flat part and the arc part enclose a semi-circular cross-sectional lumen; the flat part is closely laid on the wall of the limited space; the heat exchange fins are closely attached to the outer peripheral wall of the arc part.

[0005] Preferably, a water supply inlet flange is provided at the water supply inlet, and the water supply inlet is connected to one end of the water supply pipe through the water supply inlet flange.

[0006] Preferably, a water return outlet flange is provided at the water return outlet, and the water return outlet is connected to one end of the water return pipe through the water return outlet flange.

[0007] Preferably, the surplus cold or waste heat recovery device for solving condensation in a limited space further includes an explosion-proof fan, and the explosion-proof fan is fixedly arranged outside the heat exchange fins.

[0008] Preferably, the heat exchange fins are of H type.

[0009] Preferably, the water outlet of the water-cooled VWV unit is connected to one end of a user-side water supply pipe; the other end of the user-side water supply pipe is connected to the water inlet of the user side.

[0010] Preferably, the return water inlet of the water-cooled VWV unit is connected to one end of the user-side return water pipe; the other end of the user-side return water pipe is connected to the return water outlet of the user side.

[0011] Preferably, a circulation water pump is further provided on the return water pipe.

[0012] Preferably, when using the heat exchange tube to recover the surplus cold in a limited space, by controlling the rotation speed of the circulation water pump, the water supply pipe provides 45°C water supply to the water supply inlet; and the return water outlet provides 40°C return water to the return water pipe.

[0013] Preferably, when using the heat exchange tube to recover the surplus cold in a limited space, control the water-cooled VWV unit to provide 7°C cold water to the user side through the user-side water supply pipe; and the user-side return water pipe provides 12°C return water to the return water inlet of the water-cooled VWV unit.

[0014] Preferably, the return water pipe is further connected to one end of a makeup water pipe; the other end of the makeup water pipe is connected to a softening water tank.

[0015] Preferably, a makeup water pump is further provided on the makeup water pipe.

[0016] Preferably, the softening water tank is connected to a water softener, and the municipal raw water enters the softening water tank after being treated by the water softener.

[0017] Further preferably, the surplus cold or surplus heat recovery device for solving condensation in a limited space further includes a ventilation unit, and the ventilation unit is installed in the limited space for further drying the limited space through ventilation.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] The surplus cold or surplus heat recovery device for solving condensation in a limited space according to the present utility model can be laid closely against the wall by setting the end radiator pipe into a semicircular shape, which is beneficial to wall heating. In addition, the heat exchange fins are made into an H shape, which can strengthen heat exchange. When there is a power connection condition in the limited space, the scheme of setting a fan at the end can be selected, and the heat exchange effect is better.

[0020] Compared with the traditional end heat exchanger, the fin heat exchange area of the device according to the present utility model can be increased by more than 50%, which is beneficial to heating the wall of the limited space. In a limited space where the installation space is restricted, the device according to the present utility model can utilize the limited installation space to set a larger heat exchange area, thereby greatly enhancing heat exchange.

[0021] In the device of the present utility model, the heat exchange tubes are semi-circular tubes, which can be better arranged in contact with the wall, thereby enhancing the heat exchange efficiency with the wall.

[0022] In the present utility model, the end heat sinks of the VWV refrigeration unit are arranged on the inner wall surface of the limited space, so as to recover the surplus cold in the limited space. At the same time, the air temperature in the limited space can be increased, and the saturation degree of the humid air can be gradually reduced. At this time, the accumulated moisture in the cabin and the condensed moisture on the cabin wall can be evaporated and transferred into the air. Combined with the ventilation scheme, the cabin can be further dried, forming a virtuous cycle.

[0023] While recovering the surplus cold in the limited space, the present utility model solves the problem of condensation in the limited space, plays an important role in protecting the safe operation of the limited space, and at the same time has good energy-saving benefits. Brief Description of the Drawings

[0024] The drawings are used to provide a further understanding of the technical solution of the present utility model, and constitute a part of the specification. Together with the specific embodiments of the present application, they are used to explain the technical solution of the present utility model, and do not constitute a limitation to the technical solution of the present utility model.

[0025] Figure 1 It is a schematic structural diagram of the surplus cold or waste heat recovery device for solving condensation in a limited space described in the first embodiment of the present utility model.

[0026] Figure 2 is Figure 1 a schematic cross-sectional view in the a-a direction in

[0027] Figure 3 It is a schematic structural diagram of the surplus cold or waste heat recovery device for solving condensation in a limited space described in the second embodiment of the present utility model.

[0028] Figure 4 is Figure 3 a schematic cross-sectional view in the a-a direction in

[0029] Figure 5 It is a schematic enlarged view of a part of the pipeline of the surplus cold or waste heat recovery device for solving condensation in a limited space described in the present utility model.

[0030] Figure 6 It is a schematic connection diagram of the pipeline of the surplus cold or waste heat recovery device for solving condensation in a limited space described in the present utility model. Detailed Description of the Embodiments

[0031] The present utility model is described in more detail below to facilitate the understanding of the present utility model.

[0032] Such as Figures 1 to 6As shown in the figure, the residual cold or waste heat recovery device for solving condensation in a limited space of the present utility model includes a water supply inlet 2, a heat exchange tube 22, a water return outlet 3, and heat exchange fins 23. The water supply inlet 2, the heat exchange tube 22, and the water return outlet 3 are connected in sequence. The heat exchange fins 23 are closely attached to the outer peripheral wall of the heat exchange tube 22. At least a part of the outer peripheral wall of the heat exchange tube 22 is closely laid on the wall 1 of the limited space 10 for recovering residual cold or waste heat in the limited space. The water supply inlet 2 is connected to one end of a water supply pipe 4. The other end of the water supply pipe 4 is connected to the water outlet of a water-cooled VWV unit 6. The water return outlet 3 is connected to one end of a water return pipe 5. The other end of the water return pipe 5 is connected to the water return port of the water-cooled VWV unit 6. As Figure 5 shown, the heat exchange tube 22 includes a flat part 221 and an arc part 222. The flat part 221 and the arc part 222 enclose a pipe cavity with a semicircular cross-section. The flat part 221 is closely laid on the wall 1 of the limited space. The heat exchange fins 23 are closely attached to the outer peripheral wall of the arc part 222.

[0033] Preferably, a water supply inlet flange 223 is provided at the water supply inlet 2. The water supply inlet 2 is connected to one end of the water supply pipe 4 through the water supply inlet flange 223.

[0034] Preferably, a water return outlet flange 233 is provided at the water return outlet 3. The water return outlet 3 is connected to one end of the water return pipe 5 through the water return outlet flange 233.

[0035] In Figure 4 the shown embodiment, the residual cold or waste heat recovery device for solving condensation in a limited space further includes an explosion-proof fan 24. The explosion-proof fan 24 is fixedly arranged outside the heat exchange fins 23 for enhancing heat exchange.

[0036] According to relevant code requirements, a fan cannot be installed in the gas chamber of the pipe gallery. For other chambers, an explosion-proof fan can be considered for installation to enhance heat exchange according to the on-site power connection conditions and installation space. When applied in an underground limited space similar to a pipe gallery, it is necessary to comprehensively consider the installation space, on-site power connection conditions, and relevant code requirements to determine whether to install an explosion-proof fan. In Figure 2 the shown embodiment, no fan is installed.

[0037] Preferably, the heat exchange fins are made in an H shape for enhancing heat exchange.

[0038] Preferably, as Figure 6 shown, the water supply outlet of the water-cooled VWV unit 6 is connected to one end of a user-side water supply pipe 8. The other end of the user-side water supply pipe 8 is connected to the water inlet of a user terminal 7.

[0039] Preferably, the return water inlet of the water-cooled VWV unit 6 is connected to one end of the user-side return water pipe 9; the other end of the user-side return water pipe 9 is connected to the return water outlet of the user end 7.

[0040] Preferably, a circulating water pump 11 is further provided on the return water pipe 5.

[0041] Preferably, when using the heat exchange tube 22 to recover the residual cold in the pipe gallery 10, by controlling the rotation speed of the circulating water pump 11, the water supply pipe 4 provides water supply at 45°C to the water supply inlet 2; and the return water outlet 3 provides return water at 40°C to the return water pipe 5.

[0042] Preferably, when using the heat exchange tube 22 to recover the residual cold in the limited space 10, control the water-cooled VWV unit 6 to provide cold water at 7°C to the user end 7 through the user-side water supply pipe 8; and the user-side return water pipe 9 provides return water at 12°C to the return water inlet of the water-cooled VWV unit 6.

[0043] Preferably, the return water pipe 5 is further connected to one end of a makeup water pipe 12; the other end of the makeup water pipe 12 is connected to the softening water tank 14.

[0044] Preferably, a makeup water pump 13 is further provided on the makeup water pipe 12.

[0045] Preferably, the softening water tank 14 is connected to a water softener 15, and the municipal raw water 16 enters the softening water tank 14 after being treated by the water softener 15.

[0046] Preferably, when the heat exchange tube 22 is used to recover the residual cold in the limited space, the user end 7 is a refrigeration terminal, and cooling water is provided to the water-cooled VWV unit 6 through the return water pipe 5; when the heat exchange tube 22 is used to recover the residual heat in the limited space, the user end 7 is a heating terminal, and heat source water is provided to the water-cooled VWV unit 6 through the return water pipe 5.

[0047] Further preferably, the residual cold or residual heat recovery device for solving condensation in the limited space further includes a ventilation unit, and the ventilation unit is installed in the limited space 10 for further drying the pipe gallery through ventilation.

[0048] The method for recovering the residual cold in the pipe gallery by using the residual cold or residual heat recovery device for solving condensation in the limited space includes the following steps:

[0049] S1. Closely lay the planar part 221 of the heat exchange tube 22 on the wall 1 of the confined space; connect the water supply inlet 2 with one end of the water supply pipe 4; connect the other end of the water supply pipe 4 with the water outlet of the water-cooled VWV unit 6; connect the return water outlet 3 with one end of the return water pipe 5; connect the other end of the return water pipe 5 with the water return port of the water-cooled VWV unit 6; a circulating water pump 11 is arranged on the return water pipe 5;

[0050] S2. Connect the water supply outlet of the water-cooled VWV unit 6 with one end of the user-side water supply pipe 8; connect the other end of the user-side water supply pipe 8 with the water inlet of the user terminal 7;

[0051] S3. Connect the water return inlet of the water-cooled VWV unit 6 with one end of the user-side return water pipe 9; connect the other end of the user-side return water pipe 9 with the water return port of the user terminal 7;

[0052] S4. By controlling the rotation speed of the circulating water pump 11, make the water supply pipe 4 supply water at 45°C to the water supply inlet 2; and make the return water outlet 3 supply return water at 40°C to the return water pipe 5;

[0053] S5. Control the water-cooled VWV unit 6 to supply 7°C cold water to the user terminal 7 through the user-side water supply pipe 8; and make the user-side return water pipe 9 supply return water at 12°C to the water return inlet of the water-cooled VWV unit 6;

[0054] S6. Control the operation of the ventilation unit to further dry the confined space through ventilation.

[0055] The device for recovering surplus cold or waste heat for solving condensation in a confined space according to the present utility model forms the end radiator pipe into a semicircle, which can be closely laid on the wall, facilitating wall heating.

[0056] The above describes the preferred embodiments of the present utility model, but it is not intended to limit the present utility model. Those skilled in the art can make improvements and changes to the embodiments disclosed herein without departing from the scope and spirit of the present utility model.

Claims

1. A waste cooling or waste heat recovery device for solving condensation in a limited space, characterized in that: The waste cooling or waste heat recovery device for solving condensation in a limited space includes a water supply inlet, a heat exchange pipe, a return water outlet and heat exchange fins, and the water supply inlet, heat exchange pipe and return water outlet are connected in sequence; the heat exchange fins are tightly fitted on the outer peripheral wall of the heat exchange pipe; at least a portion of the outer peripheral wall of the heat exchange pipe is tightly laid on the wall of the limited space, for recovering waste cooling or waste heat in the limited space; the water supply inlet is connected with one end of the water supply pipe; the other end of the water supply pipe is connected with the water outlet of the water-cooled VWV unit; the return water outlet is connected with one end of the return water pipe; the other end of the return water pipe is connected with the return water outlet of the water-cooled VWV unit; the heat exchange pipe includes a flat portion and an arc portion, and the flat portion and the arc portion form a tube cavity with a semicircular cross-section; the flat portion is tightly laid on the wall of the limited space; the heat exchange fins are tightly fitted on the outer peripheral wall of the arc portion.

2. The waste cooling or waste heat recovery device for solving condensation in a limited space according to claim 1 is characterized in that: A water supply inlet flange is provided at the water supply inlet, and the water supply inlet is communicated with one end of the water supply pipe through the water supply inlet flange.

3. The waste cooling or waste heat recovery device for solving condensation in a limited space according to claim 1 is characterized in that: A return water outlet flange is provided at the return water outlet, and the return water outlet is communicated with one end of the return water pipe through the return water outlet flange.

4. The waste cooling or waste heat recovery device for solving condensation in a limited space according to claim 1 is characterized in that: The waste cooling or waste heat recovery device for solving condensation in a limited space also includes an explosion-proof fan, which is fixedly arranged on the outside of the heat exchange fins.

5. The waste cooling or waste heat recovery device for solving condensation in a limited space according to claim 1 is characterized in that: The heat exchange fins are H-shaped.

6. The waste cooling or waste heat recovery device for solving condensation in a limited space according to claim 1 is characterized in that: The water supply outlet of the water-cooled VWV unit is communicated with one end of the user-end water supply pipe; the other end of the user-end water supply pipe is communicated with the water inlet of the user-end.

7. The waste cooling or waste heat recovery device for solving condensation in a limited space according to claim 1 is characterized in that: The return water inlet of the water-cooled VWV unit is communicated with one end of the user-end return water pipe; the other end of the user-end return water pipe is communicated with the return water port of the user-end.