Closed cooling equipment with heat storage and waste heat recovery

Abstract

The present invention provides a heat storage closed cooling device with waste heat recovery, which includes a cooling main body, a heat exchange tube group arranged in the cooling main body, and a spray pipe arranged above the heat exchange tube group. A first water collecting tank for collecting cooling water is formed at the bottom of the cooling main body. A water pump is arranged between the spray pipe and the first water collecting tank, and the water pump is used to pump the cooling water in the first water collecting tank to the spray pipe. A waste heat recovery unit is also provided, and the waste heat recovery unit includes a heat recovery device for recovering the cooling water; heat exchange is carried out between the heat recovery device and the heat exchange tube group to recover the waste heat of the cooling water, solving the problems of low heat exchange efficiency and low waste heat recovery efficiency in the prior art. By arranging the heat exchange tube group to carry out heat exchange with the heat recovery device in the waste heat recovery unit, the heat energy in the cooling water can be transferred to the heat recovery device, and then used for other occasions that need heating or energy reuse. This not only improves the energy utilization efficiency, but also reduces the energy consumption, having a remarkable energy-saving effect.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange devices, and more specifically, to a heat storage closed cooling device with waste heat recovery. Background Art

[0002] In the prior art, heat storage closed cooling devices with waste heat recovery play an important role in industrial production and energy utilization. Such devices mainly improve energy utilization efficiency and reduce energy waste by recovering and reusing waste heat.

[0003] However, most heat storage closed cooling devices on the market currently have certain limitations in waste heat recovery. Although ordinary heat exchange methods can recover waste heat, due to their low heat exchange efficiency and difficulty in fully dissipating heat from the system, the overall cooling effect is not ideal. On the other hand, although the direct spraying cooling method can quickly remove waste heat, this method fails to fully utilize waste heat and instead causes energy waste, contrary to the original intention of energy conservation and efficiency improvement. To solve these problems, it is necessary to develop a heat storage closed cooling device that can not only effectively recover waste heat but also achieve strong heat dissipation, so as to improve the overall energy utilization efficiency and cooling effect of the system.

[0004] In contrast, direct spraying or other cooling water spraying cooling technologies can often achieve a rapid cooling effect, but they do not consider the problem of waste heat recovery and directly discharge a large amount of waste heat into the environment in the form of heat energy, which not only causes energy waste but also increases the environmental burden. Considering the deficiencies of the prior art, the present invention aims to propose a new design concept and solution to achieve both efficient waste heat recovery and strong heat dissipation, thereby comprehensively improving the comprehensive performance of heat storage closed cooling devices. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a heat storage closed cooling device with waste heat recovery, which can solve the problems existing in the existing cooling devices in terms of waste heat recovery and heat dissipation.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A heat storage closed cooling device with waste heat recovery, comprising a cooling main body, a heat exchange tube group arranged in the cooling main body, and a spray pipe arranged above the heat exchange tube group. A first water collecting tank for collecting cooling water is formed at the bottom of the cooling main body. A water pump is arranged between the spray pipe and the first water collecting tank. The water pump is used to pump the cooling water in the first water collecting tank to the spray pipe. The cooling main body is provided with a heat exchange water inlet part and a heat exchange water outlet part. The cooling main body is provided with a spray water inlet part corresponding to the spray pipe and a water pumping part corresponding to the first water collecting tank. The output end of the water pump is connected to the spray water inlet part through a water delivery pipe, and its input end is connected to the water pumping part. A plurality of spray nozzles are installed on the spray pipe. The waste heat recovery unit is also provided. The waste heat recovery unit includes a heat recovery device for recovering the cooling water. Heat exchange is carried out between the heat recovery device and the heat exchange tube group to recover the waste heat of the cooling water.

[0008] According to an embodiment of the present invention, the heat recovery device includes an inner tube core, an outer cylinder body, and an intermediate sleeve. A recovery chamber a is formed inside the inner tube core. A secondary heat exchange chamber c is formed between the inner tube core and the intermediate sleeve, and an inner connecting pipe is arranged between the bottom of the inner tube core and the intermediate sleeve. A recovery channel is formed inside the inner connecting pipe. A primary heat exchange chamber b is formed between the outer cylinder body and the intermediate sleeve, and a gap is left between the top of the intermediate sleeve and the inner top wall of the outer cylinder body. The recovery chamber a is communicated with the primary heat exchange chamber b through the recovery channel, and the primary heat exchange chamber b is communicated with the secondary heat exchange chamber c through the gap.

[0009] According to an embodiment of the present invention, the heat exchange tube group has a primary heat exchange tube and a secondary heat exchange tube. The primary heat exchange tube and the secondary heat exchange tube are communicated through a connecting pipe. The primary heat exchange tube is wound around the heat recovery device, and one end of the primary heat exchange tube is connected to the heat exchange water inlet part. The primary heat exchange tube is supported on the inner wall of the cooling main body by a bracket and is arranged below the spray pipe. One end of the secondary heat exchange tube is connected to the heat exchange water outlet part. A flow guide cover is arranged between the primary heat exchange tube and the secondary heat exchange tube. The flow guide cover is used to collect the cooling water sprayed out. A flow guide port is formed at the lower part of the flow guide cover, and the flow guide port is connected to the heat recovery device. A heat storage tube is also arranged at the bottom of the cooling main body, and a solenoid valve is installed on the heat storage tube.

[0010] According to an embodiment of the present invention, the heat exchange tube group includes primary heat exchange tubes and secondary heat exchange tubes. A waste heat recovery body is provided beside the cooling main body. The bottom of the waste heat recovery body has a second water collecting tank. The secondary heat exchange tubes are arranged in the cooling main body, and the primary heat exchange tubes are arranged in the waste heat recovery body. One end of the secondary heat exchange tubes is connected to the heat exchange water inlet part, and the other end is connected to the heat exchange water outlet part. A flow guide cover is also provided in the waste heat recovery body and is arranged above the primary heat exchange tubes. A spray pipe is arranged in the cooling main body and is arranged above the secondary heat exchange tubes. The primary heat exchange tubes have a primary heat exchange water inlet and a primary heat exchange water outlet. The primary heat exchange water outlet is connected to the heat exchange water inlet part through a first three-way pipe. The first port on the first three-way pipe is connected to the primary heat exchange water inlet through a second three-way pipe. Solenoid valves are arranged on the primary heat exchange water inlet, the primary heat exchange water outlet, and the first port. The second three-way pipe has a second port for the entry of high-temperature medium. A heat storage pipe is also provided at the bottom of the waste heat recovery body, and a solenoid valve is installed on the heat storage pipe.

[0011] According to an embodiment of the present invention, a waste heat recovery pipe is also connected to the connection part of the water supply pipe and the spray water inlet part. A diversion hole is opened at the top of the waste heat recovery body, and the diversion hole is located above the flow guide cover. One end of the waste heat recovery pipe is connected to the diversion hole. Solenoid valves are arranged on the spray water inlet part and the waste heat recovery pipe.

[0012] According to an embodiment of the present invention, the secondary heat exchange tubes include a plurality of annular members. The secondary heat exchange tubes are a hierarchical structure formed by connecting a plurality of parallel annular members. The annular members of two adjacent secondary heat exchange tubes up and down are connected by a reversing pipe.

[0013] According to an embodiment of the present invention, the projection of the annular member of the secondary heat exchange tube on the horizontal plane is wavy.

[0014] According to an embodiment of the present invention, the projection of the annular member of the secondary heat exchange tube on the vertical plane is wavy, and the structure of the secondary heat exchange tube is in the shape of a flared mouth.

[0015] According to an embodiment of the present invention, a plurality of heat recovery devices are provided. The diversion ports are connected to each heat recovery device through a water distribution pipe. The heat recovery devices are installed in the cooling main body or the waste heat recovery body through a support plate. The primary heat exchange tubes are continuously wound and pass through each heat recovery device in sequence.

[0016] According to an embodiment of the present invention, a ventilation part is provided at the top of the cooling main body, a servo motor is installed on the ventilation part, the output end of the servo motor is connected to a fan blade, a ventilation opening is provided on the side surface of the cooling main body and the ventilation opening is located between the diversion cover and the support plate, a ventilation net cover is installed on the ventilation opening, the spray pipe is of a cross-shaped structure, and the spray nozzles are uniformly distributed on the spray pipe and the projection of the spray nozzles on the horizontal plane of the diversion cover falls within the projection.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. In this solution, by arranging the heat exchange tube group to perform heat exchange with the heat recovery device in the waste heat recovery unit, the heat energy in the cooling water can be transferred to the heat recovery device, and then used for other occasions that need heating or energy reuse. This not only improves the energy utilization efficiency but also reduces energy consumption, having a remarkable energy-saving effect.

[0019] 2. In this solution, through the setting of the multi-stage heat exchange chamber, the heat energy recovery efficiency is improved, enabling the system to more effectively utilize the recovered heat and reducing energy waste. The spray system driven by a water pump can not only uniformly cool the heat recovery device but also make full use of the recovered condensed water, improving the overall energy efficiency and operation stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall structure diagram of the cooling device according to the first embodiment of the present invention;

[0021] Figure 2 It is the internal structure diagram of the cooling device according to the first embodiment of the present invention;

[0022] Figure 3 It is the front view schematic diagram of Figure 2 ;

[0023] Figure 4 It is the structure diagram of the waste heat recovery unit according to the first embodiment of the present invention;

[0024] Figure 5 It is the structure diagram of the heat recovery device according to the first embodiment of the present invention;

[0025] Figure 6 It is the half-sectional structure diagram of the heat recovery device according to the first embodiment of the present invention;

[0026] Figure 7 It is the structure diagram of the secondary heat exchange tube according to the first embodiment of the present invention;

[0027] Figure 8 It is the internal structure diagram of the cooling device according to the second embodiment of the present invention;

[0028] Figure 9 It is the front view schematic diagram of Figure 8Schematic plan view;

[0029] Figure 10 This is the structural diagram of the secondary heat exchange tube of the second embodiment of the present invention;

[0030] Figure 11 This is the overall structural diagram of the cooling device of the third embodiment of the present invention;

[0031] Figure 12 This is the front view of the cooling device of the third embodiment of the present invention;

[0032] Figure 13 Based on Figure 12 The enlarged structural schematic diagram at position A in

[0033] Reference numerals:

[0034] 1. Cooling main body; 101. First water collecting tank; 2. Spray pipe; 201. Spray nozzle; 3. Heat exchange tube group; 301. Primary heat exchange tube; 302. Secondary heat exchange tube; 3021. Reversing pipe; 4. Deflector; 401. Deflecting port; 5. Heat recovery device; 501. Inner tube core; 502. Outer cylinder; 503. Intermediate sleeve; 504. Inner connecting pipe; 5041. Recovery channel; 505. Gap; 6. Water pump; 7. Water supply pipe; 8. Heat exchange water inlet part; 9. Heat exchange water outlet part; 10. Ventilation part; 11. Servo motor; 12. Fan blade; 13. Bracket; 14. Ventilation mesh cover; 15. Spray water inlet part; 16. Water pumping part; 17. Water distribution pipe; 18. Connecting pipe; 19. Support plate; 20. Waste heat recovery main body; 2001. Second water collecting tank; 21. Waste heat recovery pipe; 22. Primary heat exchange water inlet; 23. Primary heat exchange water outlet; 24. First three-way pipe; 2401. First port; 25. Second three-way pipe; 2501. Second port; 26. Deflecting hole; 27. Heat storage pipe. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] As Figure 1 、 2As shown in FIGS. 2 and 3, it is a heat storage closed cooling device with waste heat recovery in the first embodiment, which includes a cooling main body 1, a heat exchange tube group 3 and a spray pipe 2. The heat exchange tube group 3 is arranged inside the cooling main body 1, and the spray pipe 2 is arranged above the heat exchange tube group 3. In order to collect the cooling water generated by spraying, a first water collecting tank 101 for collecting the cooling water is formed at the bottom of the cooling main body 1, and a water pump 6 is also provided between the spray pipe 2 and the first water collecting tank 101. The cooling main body 1 is provided with a spray water inlet part 15 corresponding to the spray pipe 2 and a water pumping part 16 corresponding to the first water collecting tank 101. The output end of the water pump 6 is connected to the spray water inlet part 15 through a water delivery pipe 7, and its input end is connected to the water pumping part 16. A number of spray nozzles 201 are installed on the spray pipe 2. It can be seen that the water pump 6 transports the cooling water in the first water collecting tank 101 to the spray pipe 2, through the water pump 6 to the spray pipe 2 and then to the first water collecting tank 101, and then returns to the water pump 6 again to form a cooling water cycle. Specifically, the water pump 6 pressurizes the cooling water and sends it to the spray pipe 2. The high-pressure cooling water is sprayed through the spray nozzles 201 and contacts the heat exchange tubes. At this time, it is liquefied again into cooling water by heat exchange or by absorbing the heat of the heat exchange tubes, and then falls into the first water collecting tank 101 under the action of gravity, so as to efficiently cool and dissipate heat from the high-temperature heat exchange tube group 3 in a closed cycle.

[0037] At the same time, in order to realize waste heat recovery, in the first embodiment, a waste heat recovery unit is also arranged in the cooling main body 1, and the waste heat recovery unit includes a heat recovery device 5 for recovering cooling water.

[0038] Next, the heat exchange tube group 3 of the first embodiment is as Figure 2 and 3 shown. The cooling main body 1 is provided with a heat exchange water inlet part 8 and a heat exchange water outlet part 9, and the heat exchange tube group 3 has a primary heat exchange tube 301 and a secondary heat exchange tube 302. The primary heat exchange tube 301 and the secondary heat exchange tube 302 are connected through a connecting pipe 18, so that the primary heat exchange tube 301 and the secondary heat exchange tube 302 are combined into one body, that is, the cooling water only flows through the primary heat exchange tube 301 and the secondary heat exchange tube 302 in a single path; also, the primary heat exchange tube 301 is wound around the heat recovery device 5 and one end of the primary heat exchange tube 301 is connected to the heat exchange water inlet part 8. The primary heat exchange tube 301 is supported on the inner wall of the cooling main body 1 by a bracket 13 and the primary heat exchange tube 301 is arranged below the spray pipe 2. One end of the secondary heat exchange tube 302 is connected to the heat exchange water outlet part 9. Among them, the heat recovery device 5 is installed in the cooling main body 1 through a support plate 19. Multiple heat recovery devices 5 can be provided, and the primary heat exchange tube 301 is continuously wound and passes through these heat recovery devices 5 in sequence. In the first embodiment, reference can be made to Figure 4As shown, the number of heat recovery devices 5 is set to four, which are placed at the positions shown in the figure. The primary heat exchange tubes 301 start winding from one heat recovery device 5. After the first winding is completed, it extends to the second adjacent heat recovery device 5 for winding. After the second winding is completed, it goes to the third adjacent heat recovery device 5 for winding until the fourth heat recovery device 5 is wound. At this time, one end of the primary heat exchange tubes 301 wound on the first heat recovery device 5 is connected to the heat exchange water inlet part 8, while one end of the primary heat exchange tubes 301 wound on the fourth or the last heat recovery device 5 is connected to the secondary heat exchange tubes 302 above it through the connecting pipe 18. It can be seen that the heat exchange tube group 3 is composed of the primary heat exchange tubes 301 and the secondary heat exchange tubes 302. The high-temperature medium flows through each heat recovery device 5 in sequence through the primary heat exchange tubes 301 and then enters the secondary heat exchange tubes 302.

[0039] Furthermore, in order to ensure reliable heat exchange operation of the cooling device, a flow guide cover 4 is also provided between the primary heat exchange tubes 301 and the secondary heat exchange tubes 302. The flow guide cover 4 is in a funnel shape and is used to collect the sprayed cooling water. Refer to Figure 3 As shown, the flow guide cover 4 is adapted to the inner walls of the four sides of the cooling main body 1, that is, the flow guide cover 4 and the cooling main body 1 are fixedly connected, and the flow guide cover 4 is exactly located below the secondary heat exchange tubes. Therefore, the flow guide cover 4 is sufficient to hold most of the liquefied cooling water. The lower part of the flow guide cover 4 has a flow guide port 401, and a four-way water distribution pipe 17 is connected to the flow guide port 401. Through the water distribution pipe 17, the flow guide port 401 can be connected to the four heat recovery devices, so that the cooling water held by the flow guide cover 4 can enter the heat recovery devices 5 for waste heat recovery. Since the flow guide port 401 is connected to the heat recovery devices 5, the liquefied cooling water enters each heat recovery device 5. Since the flow guide cover 4 is located above the primary heat exchange tubes 301 and the flow guide cover 4 is used to collect the sprayed cooling water, the high-temperature medium in the primary heat exchange tubes 301 is not cooled by spraying. Although there is still waste heat in the cooling water in the heat recovery device 5 at this time, the temperature is not high, so the waste heat recovery efficiency is relatively low. When the primary heat exchange tubes 301 pass through the heat recovery devices 5, the high-temperature medium in the primary heat exchange tubes 301 will heat the cooling water in the heat recovery devices 5 to a high temperature, and then the high-temperature water flowing out of the heat recovery devices 5 will be stored in the first water collecting tank 101. In order to facilitate heat storage, heat storage tubes 27 are also provided at the bottom of the cooling main body 1, and solenoid valves are also installed on the heat storage tubes 27. Through the heat storage tubes 27, the high-temperature water can flow into heat storage devices such as hot water storage tanks. When the liquid level of the heat storage device is low, the solenoid valves on the heat storage tubes 27 can be opened for replenishment, so as to store the heat of these waters in a timely manner for subsequent use.

[0040] As Figure 5 and 6As described above, the heat recovery device 5 of the first embodiment includes an inner tube core 501, an outer cylinder 502, and an intermediate sleeve 503. A recovery chamber a is provided inside the inner tube core 501. A secondary heat exchange chamber c is formed between the inner tube core 501 and the intermediate sleeve 503. An inner connecting pipe 504 is provided between the bottom of the inner tube core 501 and the intermediate sleeve 503. A recovery channel 5041 is provided inside the inner connecting pipe 504. In addition, a primary heat exchange chamber b is formed between the outer cylinder 502 and the intermediate sleeve 503. A gap 505 is left between the top of the intermediate sleeve 503 and the inner top wall of the outer cylinder 502. The recovery chamber a communicates with the primary heat exchange chamber b through the recovery channel 5041. The primary heat exchange chamber b communicates with the secondary heat exchange chamber c through the gap 505. Cooling water enters the recovery chamber a from one end of the inner tube core 501. When the cooling water enters the bottom of the recovery chamber a, it will enter the primary heat exchange chamber b through the recovery channel 5041. Since heat exchange occurs between the heat recovery device 5 and the heat exchange tube group 3, the cooling water in the primary heat exchange chamber b will be heated to a high temperature. Since the inner tube core 501 is provided to extend out of the outer cylinder 502, that is, the liquid level of the recovery chamber a is higher than the height of the primary heat exchange chamber b inside the outer cylinder 502. Therefore, when the water level in the primary heat exchange chamber b rises, it will flow into the secondary heat exchange chamber c through the gap 505. Since the bottom of the intermediate sleeve 503 is open, the cooling water in the secondary heat exchange chamber c will quickly fall into the first water collecting tank 101 under the action of gravity for recovering the waste heat of the cooling water. Therefore, it can be seen that the recovery chamber a and the primary heat exchange chamber b are separated by the secondary heat exchange chamber c, thereby reducing the interference of the recovery chamber a on the temperature of the cooling water in the primary heat exchange chamber b. In this way, the relatively high-temperature cooling water in the primary heat exchange chamber b can be well avoided from contacting the relatively low-temperature cooling water in the recovery chamber a, thereby reducing the heat loss of the cooling water in the primary heat exchange chamber b after heat exchange and improving the waste heat recovery efficiency.

[0041] As Figure 2 , 3As shown in FIGS. 6 and 7, it can be seen that the secondary heat exchange tube 302 of the first embodiment is spiral. The secondary heat exchange tube 302 is a hierarchical structure formed by connecting a plurality of parallel annular members. The annular members of two adjacent secondary heat exchange tubes 302 up and down are connected by a reversing tube 3021. The upper end of the secondary heat exchange tube 302 is connected to the heat exchange water outlet part 9, and the lower end is connected to the primary heat exchange tube 301 through a connecting pipe 18 to receive the high-temperature medium from the primary heat exchange tube 301. The secondary heat exchange tube 302 is in a flared shape, that is, the projections of each annular member on the horizontal plane do not overlap. This design enables the water mist to fully contact the surface of each tube body of the secondary heat exchange tube 302, increasing the heat exchange area, thereby improving the heat dissipation efficiency and enhancing the overall cooling effect. Therefore, after the cooling water is sprayed, a large contact surface can be obtained between the surface of each tube body of the secondary heat exchange tube 302 and the water mist, thereby improving the heat dissipation effect. Compared with the existing plate heat exchanger and finned plate heat exchanger, the former's planar structure limits the contact area between the cooling water and the heat exchange medium, resulting in low cooling efficiency; although the latter increases the heat exchange area, due to the easy occurrence of air flow short circuits between the fins, the overall heat exchange effect is affected, and the advantages of high-efficiency heat dissipation and uniform contact possessed by the secondary heat exchange tube 302 in the present invention cannot be achieved. Therefore, the technical effect of the present invention is to provide a more efficient heat dissipation mechanism and more uniform heat exchange conditions. It is through the unique spiral structure and flared design of the secondary heat exchange tube 302 that the contact area and contact time between the cooling water and the high-temperature medium are enhanced, thereby greatly improving the heat exchange efficiency and achieving a more efficient cooling effect. Its working principle is that first, the high-temperature medium is transmitted from the primary heat exchange tube 301 to the secondary heat exchange tube 302, passing through multiple layers of spiral annular members. Water mist is evenly distributed on each annular member, increasing the contact area between the medium and the cooling water, thereby quickly transferring the heat of the high-temperature medium to the cooling water, and finally realizing an efficient heat exchange and cooling process.

[0042] Furthermore, the projection of the annular member of the secondary heat exchange tube 302 on the horizontal plane is wavy. This design not only increases the contact area between the tube wall and the high-temperature medium, but also effectively improves the heat exchange efficiency by extending the flow path of the fluid inside the device. Specifically, the wavy design makes the surface of the secondary heat exchange tube 302 have more undulations, which not only means that the surface area in contact with the fluid when passing through is greatly increased, but also forces the fluid to flow more tortuously inside the device, further enhancing the heat exchange ability during the heat transfer process. This efficient heat exchange design principle enables a more excellent cooling effect to be achieved in a device of the same volume. Moreover, through a more compact and multi-layer arrangement of a plurality of parallel annular members, the heat dissipation path is greatly extended and approaches the heat dissipation path length of a common radiator.

[0043] As Figure 8 、 9As shown in FIGS. 9 and 10, the heat storage closed cooling device with waste heat recovery of the second embodiment is different from that of the first embodiment in that the projection of its annular member in the vertical plane is wavy and the structure of the secondary heat exchange tube 302 is still flared, thus significantly improving the uniformity of the cooling effect. Specifically, this design enables the high-temperature medium to spread better up and down at the same height and extends the heat dissipation path, thereby improving the cooling effect. In contrast, the horizontal projection plane of the secondary heat exchange tube 302 in the first embodiment is wavy, and the spread of the high-temperature medium at the same height is limited, and the heat dissipation path is relatively short and the efficiency is low. Therefore, the optimized secondary heat exchange tube 302 not only makes the cooling process more uniform, but also enables the medium to spread out flat at the same height and dissipate heat along a longer path, thereby improving the cooling performance and efficiency.

[0044] When the high-temperature medium passes through the flared secondary heat exchange tube 302, the medium forms multiple turns and velocity changes due to the guidance of the wavy annular member during the process of entering and discharging, and these changes increase the contact area and time of heat transfer, thereby improving the heat exchange efficiency. At the same time, the flared structure causes a disturbance effect when the fluid flows through the secondary heat exchange tube 302, further enhancing the heat transfer effect, enabling the device to complete the cooling task in a shorter time and effectively recover waste heat, thereby improving the energy utilization efficiency and environmental friendliness. In the second embodiment, the projection of the secondary heat exchange tube 302 in the vertical plane is wavy, which not only improves the working performance of the cooling device, but also significantly reduces the energy consumption and operating cost.

[0045] As Figure 11 shown, the heat storage closed cooling device with waste heat recovery of the third embodiment has a heat exchange tube group 3 with a primary heat exchange tube 301 and a secondary heat exchange tube 302. The difference from the first embodiment is that the waste heat recovery unit is arranged outside the cooling main body 1. Specifically, a waste heat recovery main body 20 is arranged beside the cooling main body 1. The waste heat recovery unit includes the waste heat recovery main body 20. The bottom of the waste heat recovery main body 20 has a second water collecting tank 2001. The secondary heat exchange tube 302 is arranged in the cooling main body 1. One end of the secondary heat exchange tube 302 is connected to the heat exchange water inlet part 8, and the other end is connected to the heat exchange water outlet part 9. A spray pipe 2 is arranged in the cooling main body 1 and the spray pipe 2 is arranged above the secondary heat exchange tube 302; the primary heat exchange tube 301 is arranged in the waste heat recovery main body 20. A flow guide cover 4 is also arranged in the waste heat recovery main body 20 and the flow guide cover 4 is arranged above the primary heat exchange tube 301. The heat recovery device 5 is installed below the flow guide cover 4 through a support plate 19, and the flow guide port 401 at the bottom of the flow guide cover 4 is connected to the four heat recovery devices 5 through a four-way water distribution pipe 17. Then as Figure 12As shown, the primary heat exchange tubes 301 are wound around the four heat recovery devices 5 in sequence, and both ends of the primary heat exchange tubes 301 are provided with a primary heat exchange water inlet 22 and a primary heat exchange water outlet 23. The primary heat exchange water outlet 23 is connected to the heat exchange water inlet part 8 through a first three-way pipe 24. The first port 2401 on the first three-way pipe 24 is connected to the primary heat exchange water inlet 22 through a second three-way pipe 25. Solenoid valves are arranged on the primary heat exchange water inlet 22, the primary heat exchange water outlet 23, and the first port 2401. The second three-way pipe 25 is provided with a second port 2501 for high-temperature medium to enter. In addition, different from the first embodiment, a waste heat recovery pipe 21 is also connected to the connection part between the water supply pipe 7 and the spray water inlet part 15. A diversion hole 26 is opened at the top of the waste heat recovery main body 20, and the diversion hole 26 is located above the diversion cover 4. One end of the waste heat recovery pipe 21 is connected to the diversion hole 26. Solenoid valves are arranged on the spray water inlet part 15 and the waste heat recovery pipe 21. Therefore, as Figure 13 shown, when the cooling main body 1 works alone, the solenoid valve on the waste heat recovery pipe 21 can be closed. At this time, the cooling water can only circulate inside the cooling main body 1. Since only the secondary heat exchange tubes 302 work at this time, in order to save energy, the solenoid valves on the primary heat exchange water inlet 22 and the primary heat exchange water outlet 23 can be closed and the solenoid valve on the first port 2401 can be opened. At this time, the high-temperature medium directly flows into the heat exchange water inlet part 8 through the second port 2501 and the first port 2401, so as to directly enter the cooling main body 1 without passing through the waste heat recovery main body 20; when it is necessary to make the cooling main body 1 and the waste heat recovery main body 20 work simultaneously, only the solenoid valve on the first port 2401 needs to be closed. The high-temperature medium can flow from the primary heat exchange water inlet 22 to the primary heat exchange tubes 301, and then from the primary heat exchange water outlet 23 to the heat exchange water inlet part 8 and enter the secondary heat exchange tubes 302, so as to realize the simultaneous operation of the two, achieving the effects of energy saving and efficient heat exchange.

[0046] Further, when waste heat recovery is required, the solenoid valve on the waste heat recovery pipe 21 is opened, and part of the cooling water will enter the waste heat recovery main body 20 through the waste heat recovery pipe 21. Refer to Figure 12 , at this time, the cooling water flows into each heat recovery device 5 along the diversion cover 4, and after exchanging heat with the primary heat exchange tubes 301, it flows into the second water collecting tank 2001 for heat storage. In addition, a heat storage pipe 27 is also provided at the bottom of the waste heat recovery main body 20, and a solenoid valve is installed on the heat storage pipe 27; similarly, through the heat storage pipe 27, high-temperature water can flow into heat storage devices such as a hot water storage tank. When the liquid level of the heat storage device is low, the solenoid valve on the heat storage pipe 27 can be opened for replenishment, so as to store the heat of these waters in a timely manner for subsequent use.

[0047] The specific working process is as follows: The high-temperature medium first enters the primary heat exchange tube 301, exchanges heat with the heat recovery device 5 through the primary heat exchange tube 301. The heat recovery device 5 drops the collected cooling water into the second water collecting tank 2001 for storage. Then the high-temperature medium flows out of the primary heat exchange tube 301 and enters the secondary heat exchange tube 302. At this time, the high-temperature medium inside the cooling main body 1 forms a water mist through the spray pipe 2, and the water mist is used to exchange heat with the secondary heat exchange tube 302, thereby quickly reducing the temperature of the high-temperature medium in the secondary heat exchange tube 302. After absorbing heat, the water mist liquefies and then returns to the first water collecting tank 101, and is then sent to the water supply pipe 7 by the water pump 6 to form a circulating cooling system.

[0048] It should be added that, as Figure 1 shown, a ventilation part 10 is also provided at the top of the cooling main body 1 of the above-mentioned embodiment. A servo motor 11 is installed on the ventilation part 10, and the output end of the servo motor 11 is connected to the fan blade 12. A ventilation opening is provided on the side of the cooling main body 1 and the ventilation opening is located between the flow guide cover 4 and the support plate 19. A ventilation net cover 14 is installed on the ventilation opening. The spray pipe 2 is of a cross-shaped structure, and the spray nozzles 201 are evenly distributed on the spray pipe 2 and the projection of the spray nozzles 201 on the horizontal plane falls within the flow guide cover 4. The spray pipe 2 is arranged in a cross shape, and the evenly distributed spray nozzles 201 spray the cooling water within the projection area of the horizontal plane of the flow guide cover 4, providing high-efficiency cooling. Under the combined action of the circulation of the cooling water in the flow guide cover 4 and the forced ventilation of the fan, the heat generated by the electronic product can be quickly removed, and the hot air is discharged through the ventilation opening and the ventilation net cover 14, ensuring that the device can still maintain the cooling effect in a relatively hot environment, thereby realizing efficient and stable thermal management and improving the reliability and service life of the electronic product.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat storage closed cooling device with waste heat recovery, comprising a cooling body (1), a heat exchange tube group (3) arranged in the cooling body (1), and a spray pipe (2) arranged above the heat exchange tube group (3), wherein a first water collecting tank (101) for collecting cooling water is formed at the bottom of the cooling body (1), a water pump (6) is arranged between the spray pipe (2) and the first water collecting tank (101), and the water pump (6) is used to pump the cooling water in the first water collecting tank (101) to the spray pipe (2), and is characterized in that: The cooling body (1) is provided with a spray water inlet (15) at a location corresponding to the spray pipe (2) and a pumping portion (16) at a location corresponding to the first water collecting tank (101); the output end of the water pump (6) is connected to the spray water inlet (15) via a water supply pipe (7), and the input end thereof is connected to the pumping portion (16); a plurality of spray nozzles (201) are installed on the spray pipe (2), and a waste heat recovery unit is also provided, the waste heat recovery unit comprising a heat recovery device (5) for recovering cooling water; heat is exchanged between the heat recovery device (5) and the heat exchange tube group (3) to recover waste heat of the cooling water; The heat exchange tube group (3) comprises a primary heat exchange tube (301) and a secondary heat exchange tube (302), the primary heat exchange tube (301) and the secondary heat exchange tube (302) being connected to each other, the primary heat exchange tube (301) being wound around the heat recovery device (5), the flow guide cover (4) being arranged above the primary heat exchange tube (301), the lower part of the flow guide cover (4) being provided with a flow guide port (401), and the flow guide port (401) being connected to the heat recovery device (5).

2. The heat storage closed cooling device with waste heat recovery according to claim 1 is characterized in that: The heat recovery device (5) comprises an inner tube core (501), an outer cylinder (502) and an intermediate sleeve (503); a recovery chamber a is provided in the inner tube core (501); a secondary heat exchange chamber c is formed between the inner tube core (501) and the intermediate sleeve (503); an inner tube (504) is provided between the bottom of the inner tube core (501) and the intermediate sleeve (503); a recovery channel (5041) is provided in the inner tube (504); a primary heat exchange chamber b is formed between the outer cylinder (502) and the intermediate sleeve (503); a gap (505) is left between the top of the intermediate sleeve (503) and the inner top wall of the outer cylinder (502); the recovery chamber a is connected to the primary heat exchange chamber b through the recovery channel (5041); and the primary heat exchange chamber b is connected to the secondary heat exchange chamber c through the gap (505).

3. The heat storage closed cooling device with waste heat recovery according to claim 2 is characterized in that: The heat exchange tube group (3) comprises a primary heat exchange tube (301) and a secondary heat exchange tube (302), the primary heat exchange tube (301) and the secondary heat exchange tube (302) being connected via a connecting tube (18), the primary heat exchange tube (301) being wound around the heat recovery device (5) and one end of the primary heat exchange tube (301) being connected to a heat exchange water inlet (8), the primary heat exchange tube (301) being supported on the inner wall of the cooling body (1) via a bracket (13) and the primary heat exchange tube (301) being arranged on the Below the spray pipe (2), one end of the secondary heat exchange pipe (302) is connected to the heat exchange water outlet (9), a flow guide cover (4) is provided between the primary heat exchange pipe (301) and the secondary heat exchange pipe (302), the flow guide cover (4) is used to collect the sprayed cooling water, the lower part of the flow guide cover (4) has a flow guide port (401), and the flow guide port (401) is connected to the heat recovery device (5), and a heat storage pipe (27) is also provided at the bottom of the cooling body (1), and a solenoid valve is installed on the heat storage pipe (27).

4. The heat storage closed cooling device with waste heat recovery according to claim 2 is characterized in that: The heat exchange tube group (3) comprises a primary heat exchange tube (301) and a secondary heat exchange tube (302); a waste heat recovery body (20) is arranged beside the cooling body (1); a second water collecting tank (2001) is arranged at the bottom of the waste heat recovery body (20); the secondary heat exchange tube (302) is arranged in the cooling body (1); the primary heat exchange tube (301) is arranged in the waste heat recovery body (20); one end of the secondary heat exchange tube (302) is connected to the heat exchange water inlet (8); and the other end is connected to the heat exchange water outlet (9); a flow guide cover (4) is further arranged in the waste heat recovery body (20); and the flow guide cover (4) is arranged above the primary heat exchange tube (301); a spray pipe (2) is arranged in the cooling body (1); and the spray pipe (2) is arranged above the secondary heat exchange tube ( The primary heat exchange pipe (301) is provided with a primary heat exchange water inlet (22) and a primary heat exchange water outlet (23); the primary heat exchange water outlet (23) is connected to the heat exchange water inlet (8) via a first three-way pipe (24); a first port (2401) on the first three-way pipe (24) is connected to the primary heat exchange water inlet (22) via a second three-way pipe (25); solenoid valves are provided on the primary heat exchange water inlet (22), the primary heat exchange water outlet (23) and the first port (2401); the second three-way pipe (25) has a second port (2501) for high-temperature medium to enter; a heat storage pipe (27) is further provided at the bottom of the waste heat recovery body (20); a solenoid valve is installed on the heat storage pipe (27).

5. The heat storage closed cooling device with waste heat recovery according to claim 4 is characterized in that: A waste heat recovery pipe (21) is also connected to the connection between the water supply pipe (7) and the spray water inlet (15); a guide hole (26) is provided at the top of the waste heat recovery body (20); the guide hole (26) is located above the guide cover (4); one end of the waste heat recovery pipe (21) is connected to the guide hole (26); and electromagnetic valves are provided on the spray water inlet (15) and the waste heat recovery pipe (21).

6. The heat storage closed cooling device with waste heat recovery according to any one of claims 3 to 5, characterized in that: The secondary heat exchange tube (302) comprises a plurality of annular components. The secondary heat exchange tube (302) is a hierarchical structure formed by a plurality of parallel annular components connected to each other. The annular components of two upper and lower adjacent secondary heat exchange tubes (302) are connected by a reversing tube (3021).

7. The heat storage closed cooling device with waste heat recovery according to any one of claims 3 to 5, characterized in that: The annular component of the secondary heat exchange tube (302) is projected into a wave shape on a horizontal plane.

8. The heat storage closed cooling device with waste heat recovery according to any one of claims 3 to 5, characterized in that: The projection of the annular component of the secondary heat exchange tube (302) on the vertical plane is wavy, and the structure of the secondary heat exchange tube (302) is bell-mouth-shaped.

9. The heat storage closed cooling device with waste heat recovery according to any one of claims 3 to 5, characterized in that: A plurality of heat recovery devices (5) are provided, and the flow guide port (401) is connected to each heat recovery device (5) via a water distribution pipe (17). The heat recovery device (5) is installed in the cooling body (1) or the waste heat recovery body (20) via a support plate (19), and the first-level heat exchange tube (301) is continuously wound and passes through each heat recovery device (5) in sequence.

10. The heat storage closed cooling device with waste heat recovery according to claim 9, characterized in that: A ventilation portion (10) is provided on the top of the cooling body (1), a servo motor (11) is installed on the ventilation portion (10), an output end of the servo motor (11) is connected to a fan blade (12), a ventilation opening is provided on the side of the cooling body (1) and the ventilation opening is located between the air guide cover (4) and the support plate (19), a ventilation mesh cover (14) is installed on the ventilation opening, the spray pipe (2) is a cross-shaped structure, the spray nozzles (201) are evenly distributed on the spray pipe (2), and the spray nozzles (201) fall within the projection of the horizontal plane of the air guide cover (4).

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