Heat storage closed cooling equipment with waste heat recovery function

Abstract

The invention provides heat storage closed type cooling equipment with waste heat recovery, which comprises a cooling main body, a heat exchange pipe group arranged in the cooling main body and a spray pipe arranged above the heat exchange pipe group, a first water collecting tank for collecting cooling water is formed at the bottom of the cooling main body, and a water pump is arranged between the spray pipe and the first water collecting tank. The water pump is used for pumping cooling water in the first water collecting tank to the spraying pipe, and the waste heat recovery unit comprises a heat recoverer used for recovering cooling water; the heat recoverer exchanges heat with the heat exchange pipe set to recover the waste heat of the cooling water, the problem that in the prior art, the heat exchange efficiency and the waste heat recovery efficiency are low is solved, the heat exchange pipe set exchanges heat with the heat recoverer in the waste heat recovery unit, heat energy in the cooling water can be transmitted to the heat recoverer, and the waste heat of the cooling water is recovered. And the device is further used for other occasions needing heating or energy recycling. Therefore, the energy utilization efficiency is improved, the energy consumption is reduced, and a remarkable energy-saving effect is achieved.

Description

Technical Field

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

[0002] In the existing technology, heat storage closed cooling equipment with waste heat recovery plays an important role in industrial production and energy utilization. This type of equipment mainly improves energy utilization efficiency and reduces energy waste by recycling waste heat.

[0003] However, most of the heat storage closed cooling equipment on the market currently has 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 the heat of the system, the overall cooling effect is not ideal. On the other hand, although the direct spray heat reduction method can quickly take away the waste heat, this method fails to make full use of the waste heat, but instead causes energy waste, which goes against the original intention of energy saving and efficiency improvement. In order to solve these problems, it is necessary to develop a heat storage closed cooling equipment that can effectively recover waste heat and 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 spray cooling technologies can often achieve rapid cooling effects, but they do not take into account the problem of waste heat recovery, and directly discharge a large amount of waste heat into the environment in the form of thermal energy, which not only causes energy waste, but also increases the environmental burden. Considering the shortcomings 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 equipment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object 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 equipment in terms of waste heat recovery and heat dissipation.

[0006] To achieve the above object, the present invention provides the following technical solutions: A heat storage closed cooling device with waste heat recovery comprises a cooling body, a heat exchange tube group arranged in the cooling 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 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. A heat exchange water inlet and a heat exchange water outlet are provided on the cooling body. A spray water inlet is provided at the cooling body corresponding to the spray pipe and a pumping part is provided at the cooling body corresponding to the first water collecting tank. The output end of the water pump is connected to the spray water inlet through a water supply pipe, and the input end thereof is connected to the pumping part. A plurality of spray nozzles are installed on the spray pipe, and a waste heat recovery unit is also provided. The waste heat recovery unit comprises a heat recovery device for recovering cooling water. Heat is exchanged between the heat recovery device and the heat exchange tube group to recover the waste heat of the cooling water.

[0007] According to one embodiment of the present invention, the heat recovery device includes an inner tube core, an outer cylinder and an intermediate sleeve, the inner tube core has a recovery chamber a, a secondary heat exchange chamber c is formed between the inner tube core and the intermediate sleeve, and an inner tube is provided between the bottom of the inner tube core and the intermediate sleeve, the inner tube has a recovery channel, a primary heat exchange chamber b is formed between the outer cylinder 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, the recovery chamber a is connected with the primary heat exchange chamber b through the recovery channel, and the primary heat exchange chamber b is connected with the secondary heat exchange chamber c through the gap.

[0008] According to one embodiment of the present invention, the heat exchange tube group comprises a primary heat exchange tube and a secondary heat exchange tube, the primary heat exchange tube and the secondary heat exchange tube are connected via a connecting tube, 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, the primary heat exchange tube is supported by a bracket on the inner wall of the cooling body and the primary heat exchange tube is arranged below the spray pipe, one end of the secondary heat exchange tube is connected to the heat exchange water outlet, a flow guide cover is provided between the primary heat exchange tube and the secondary heat exchange tube, the flow guide cover is used to collect the sprayed cooling water, the lower part of the flow guide cover has a flow guide port, the flow guide port is connected to the heat recovery device, a heat storage tube is also provided at the bottom of the cooling body and a solenoid valve is installed on the heat storage tube.

[0009] According to one embodiment of the present invention, the heat exchange tube group has a primary heat exchange tube and a secondary heat exchange tube, a waste heat recovery body is arranged beside the cooling body, and a second water collecting tank is arranged at the bottom of the waste heat recovery body, the secondary heat exchange tube is arranged in the cooling body, the primary heat exchange tube is arranged in the waste heat recovery body, one end of the secondary heat exchange tube is connected to the heat exchange water inlet, and the other end is connected to the heat exchange water outlet, a guide cover is also arranged in the waste heat recovery body and the guide cover is arranged above the primary heat exchange tube, a spray pipe is arranged in the cooling body and the spray pipe is arranged Above the secondary heat exchange tube, the primary heat exchange tube has 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 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, the primary heat exchange water inlet, the primary heat exchange water outlet and the first port are all provided with solenoid valves, the second three-way pipe has a second port for high-temperature medium to enter, and 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.

[0010] According to one embodiment of the present invention, a waste heat recovery pipe is also connected to the connection between the water supply pipe and the spray water inlet, a guide hole is opened at the top of the waste heat recovery body, the guide hole is located above the guide cover, one end of the waste heat recovery pipe is connected to the guide hole, and solenoid valves are arranged on the spray water inlet and the waste heat recovery pipe.

[0011] According to one embodiment of the present invention, the secondary heat exchange tube comprises a plurality of annular components, and the secondary heat exchange tube is a hierarchical structure formed by a plurality of parallel annular components connected to each other, and the annular components of two adjacent secondary heat exchange tubes are connected by a reversing tube.

[0012] According to one embodiment of the present invention, the annular component of the secondary heat exchange tube is projected into a wave shape on a horizontal plane.

[0013] According to one embodiment of the present invention, the projection of the annular component of the secondary heat exchange tube on the vertical plane is wavy, and the structure of the secondary heat exchange tube is trumpet-shaped.

[0014] According to one embodiment of the present invention, a plurality of heat recovery devices are provided, the guide port is connected to each heat recovery device through a water distribution pipe, the heat recovery device is installed in a cooling body or a waste heat recovery body through a support plate, and the primary heat exchange tube is continuously wound and passes through each heat recovery device in turn.

[0015] 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, and the output end of the servo motor is connected to a fan blade. A ventilation opening is formed on the side surface of the cooling main body and the ventilation opening is located between the flow guide cover and the support plate. A ventilation mesh cover is installed on the ventilation opening. The spray pipe is of a cross-shaped structure, and the spray nozzles are evenly distributed on the spray pipe and the projection of the spray nozzles on the horizontal plane of the flow guide cover falls within the projection.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 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 significant energy-saving effect.

[0017] 2. In this solution, through the arrangement of the multi-stage heat exchange cavity, 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 evenly cool the heat recovery device but also make full use of the recovered condensate water, improving the overall energy efficiency and operation stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structure diagram of the cooling device according to the first embodiment of the present invention; Figure 2 is the internal structure diagram of the cooling device according to the first embodiment of the present invention; Figure 3 is the front view of Figure 2 the plane schematic diagram; Figure 4 is the structure diagram of the waste heat recovery unit according to the first embodiment of the present invention; Figure 5 is the structure diagram of the heat recovery device according to the first embodiment of the present invention; Figure 6 is the half-sectional structure diagram of the heat recovery device according to the first embodiment of the present invention; Figure 7 is the structure diagram of the secondary heat exchange tube according to the first embodiment of the present invention; Figure 8 is the internal structure diagram of the cooling device according to the second embodiment of the present invention; Fig. 9 is the front view of Figure 8 the plane schematic diagram; Fig.10 is the structure diagram of the secondary heat exchange tube according to the second embodiment of the present invention; Fig.11 is the overall structure diagram of the cooling device according to the third embodiment of the present invention; Fig.12 It is a front view of a cooling device according to a third embodiment of the present invention; Fig.13 Based on Fig.12 Schematic diagram of the enlarged structure at point A in the middle.

[0019] Reference numerals: 1. Cooling 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 tube; 4. Flow guide cover; 401. Flow guide port; 5. Heat recovery device; 501. Inner tube core; 502. Outer cylinder; 503. Intermediate sleeve; 504. Inner tube; 5041. Recovery channel; 505. Gap; 6. Water pump; 7. Water supply pipe; 8. Heat exchange water inlet; 9. Heat exchange water outlet; 10. Ventilation 1. servo motor; 12. fan blades; 13. bracket; 14. ventilation mesh cover; 15. spray water inlet; 16. pumping part; 17. water distribution pipe; 18. connecting pipe; 19. support plate; 20. waste heat recovery 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. guide hole; 27. heat storage pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 , 2As shown in and 3, it is a heat storage closed cooling device with waste heat recovery of the first embodiment, which includes a cooling body 1, a heat exchange tube group 3 and a spray pipe 2. The heat exchange tube group 3 is arranged in the cooling 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 collecting tank 101 for collecting cooling water is formed at the bottom of the cooling body 1, and a water pump 6 is also provided between the spray pipe 2 and the first collecting tank 101. The cooling body 1 is provided with a spray water inlet 15 corresponding to the spray pipe 2 and a pumping part 16 corresponding to the first collecting tank 101. The output end of the water pump 6 is connected to the spray water inlet 15 through a water supply pipe 7, and its input end is connected to the pumping part 16. A plurality of spray nozzles 201 are installed on the spray pipe 2. It can be known 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, forming 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 contacts the heat exchange tube after being sprayed through the spray nozzle 201. At this time, it is liquefied into cooling water through heat exchange or absorption of heat from the heat exchange tube, and then falls into the first water collecting tank 101 under the action of gravity, thereby performing efficient closed-loop cooling and heat dissipation on the high-temperature heat exchange tube group 3.

[0022] At the same time, in order to realize waste heat recovery, in the first embodiment, a waste heat recovery unit is further provided in the cooling body 1, and the waste heat recovery unit includes a heat recovery device 5 for recovering cooling water.

[0023] Next, the heat exchange tube group 3 of the first embodiment is as follows Figure 2 and 3 As shown, the cooling body 1 has a heat exchange water inlet 8 and a heat exchange water outlet 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 tube 18, so that the primary heat exchange tube 301 and the secondary heat exchange tube 302 are combined into one, 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; in addition, 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 8, the primary heat exchange tube 301 is supported by a bracket 13 on the inner wall of the cooling body 1 and the primary heat exchange tube 301 is arranged below the spray pipe 2, and one end of the secondary heat exchange tube 302 is connected to the heat exchange water outlet 9. The heat recovery device 5 is installed in the cooling body 1 through the support plate 19. A plurality of heat recovery devices 5 can be provided. The primary heat exchange tube 301 is continuously wound and sequentially passes through the heat recovery devices 5. 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 according to the positions shown in the figure. The first-level heat exchange tube 301 starts to be wound 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 is wound to the third adjacent heat recovery device 5 until the fourth heat recovery device 5 is wound. At this time, one end of the first-level heat exchange tube 301 wound on the first heat recovery device 5 is connected to the heat exchange water inlet 8, and one end of the first-level heat exchange tube 301 wound on the fourth or last heat recovery device 5 is connected to the second-level heat exchange tube 302 above it through the connecting tube 18. It can be seen that the heat exchange tube group 3 consists of a first-level heat exchange tube 301 and a second-level heat exchange tube 302. The high-temperature medium flows through each heat recovery device 5 in turn through the first-level heat exchange tube 301 and then enters the second-level heat exchange tube 302.

[0024] Furthermore, in order to ensure reliable heat exchange of the cooling device, a guide cover 4 is provided between the primary heat exchange tube 301 and the secondary heat exchange tube 302. The guide cover 4 is bucket-shaped and is used to collect the sprayed cooling water. Figure 3 As shown, the guide cover 4 is adapted to the inner wall around the cooling body 1, that is, the guide cover 4 and the cooling body 1 are fixedly connected, and the guide cover 4 is just located below the diode heat exchange tube, so the guide cover 4 is sufficient to hold most of the liquefied cooling water, and the lower part of the guide cover 4 has a guide port 401, and the guide port 401 is connected to a one-to-four water distribution pipe 17, and the guide port 401 can be connected to four heat recovery devices through the water distribution pipe 17, so that the cooling water held by the guide cover 4 can then enter the heat recovery device 5 for waste heat recovery. Since the guide port 401 is connected to the heat recovery device 5, the liquefied cooling water enters each heat recovery device 5. Since the guide cover 4 is located above the primary heat exchange tube 301, and the guide cover 4 is used to collect the cooling water after spraying, the primary heat exchange tube 301 contains high-temperature medium that has not been spray-cooled. Although the cooling water in the heat recovery device 5 still has waste heat at this time, the temperature is not high, so the waste heat recovery efficiency is low. When the first-level heat exchange tube 301 passes through the heat recovery device 5, the high-temperature medium in the first-level heat exchange tube 301 will heat the cooling water in the heat recovery device 5 to a high temperature, and then the high-temperature water flowing out of the heat recovery device 5 will be stored in the first water collecting tank 101. In order to facilitate heat storage, a heat storage tube 27 is also provided at the bottom of the cooling body 1. At the same time, a solenoid valve is also installed on the heat storage tube 27. The high-temperature water can flow into a heat storage device such as a hot water tank through the heat storage tube 27. When the liquid level of the heat storage device is low, the solenoid valve on the heat storage tube 27 can be opened for replenishment, thereby storing the heat of the water in time for subsequent use.

[0025] like Figure 5 and 6The heat recovery device 5 of the first embodiment includes an inner tube core 501, an outer cylinder 502 and an intermediate sleeve 503, wherein the inner tube core 501 has a recovery chamber a, a secondary heat exchange chamber c is formed between the inner tube core 501 and the intermediate sleeve 503, and an inner tube 504 is provided between the bottom of the inner tube core 501 and the intermediate sleeve 503, and a recovery channel 5041 is provided in the inner tube 504. In addition, a primary heat exchange chamber b is formed between the outer cylinder 502 and the intermediate sleeve 503, and 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 with the primary heat exchange chamber b through the recovery channel 5041, and the primary heat exchange chamber b is connected 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, and 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. During heat exchange, the cooling water in the primary heat exchange chamber b will be heated to a high temperature. Since the inner tube core 501 is arranged 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 in the outer cylinder 502, 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 to recover 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, so that the higher temperature cooling water in the primary heat exchange chamber b can avoid contact with the lower 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.

[0026] like Figure 2 , 3As shown in Figure 7, it can be seen that the secondary heat exchange tube 302 of the first embodiment is spiral-shaped. The secondary heat exchange tube 302 is a hierarchical structure formed by connecting multiple parallel annular components. The annular components of two adjacent secondary heat exchange tubes 302 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 9, and the lower end is connected to the primary heat exchange tube 301 through a connecting tube 18 to receive the high-temperature medium from the primary heat exchange tube 301. The secondary heat exchange tube 302 is in a bell-mouth shape, that is, the projection of each annular component on the horizontal plane does not overlap. This design allows the water mist to fully contact with each tube body surface of the secondary heat exchange tube 302, increase the heat exchange area, thereby improving the heat dissipation efficiency and enhancing the overall cooling effect. Therefore, after the cooling water is sprayed, each tube body surface of the secondary heat exchange tube 302 can obtain a larger contact surface with the water mist, thereby improving the heat dissipation effect. Compared with the existing plate heat exchanger and fin plate heat exchanger, the plane structure of the former 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, it is easy to produce airflow short circuit between the fins, which affects the overall heat exchange effect and cannot achieve the advantages of efficient heat dissipation and uniform contact of the secondary heat exchange tube 302 in the present invention. 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 bell mouth 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 the high-temperature medium is first transferred from the primary heat exchange tube 301 to the secondary heat exchange tube 302, passing through multiple layers of spiral annular components, each of which is evenly distributed with water mist, 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 achieving an efficient heat exchange and cooling process.

[0027] Furthermore, the annular component of the secondary heat exchange tube 302 is wavy in horizontal plane projection. 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 that the fluid contacts when passing through is greatly increased, but also forces the fluid to flow more tortuously in the device, further enhancing the heat exchange capacity during the heat transfer process. This efficient heat exchange design principle enables a better cooling effect to be achieved in equipment of the same volume. Furthermore, multiple parallel annular components are arranged more closely and in multiple layers, which greatly extends the heat dissipation path and approaches the heat dissipation path length of an ordinary radiator.

[0028] like Figure 8 , 9As shown in Figures 10 and 11, a heat storage closed cooling device with waste heat recovery of the second embodiment is shown. The difference from the first embodiment is that the projection of its annular component on the vertical plane is designed in a wavy shape and the structure of the secondary heat exchange tube 302 is still in a trumpet shape, which significantly improves the uniformity of the cooling effect. Specifically, this design allows the high-temperature medium to be better spread out at the same height and the heat dissipation path is extended, thereby improving the cooling effect. In contrast, the horizontal projection surface of the secondary heat exchange tube 302 of the first embodiment is wavy, and the spreading of the high-temperature medium at the same height will be limited, the heat dissipation path is relatively short, and the efficiency is low. Therefore, the optimized design of the secondary heat exchange tube 302 not only makes the cooling process more uniform, but the medium can be spread out at the same height and dissipate heat along a longer path, thereby improving the cooling performance and efficiency.

[0029] When the high-temperature medium passes through the bell-shaped secondary heat exchange tube 302, the medium forms multiple turns and flow rate changes during the process of entering and discharging due to the guidance of the wavy annular component. These changes increase the contact area and time of heat transfer, thereby improving the heat exchange efficiency. At the same time, the bell-shaped structure causes the fluid to produce a disturbance effect when flowing through the secondary heat exchange tube 302, further enhancing the heat transfer effect, allowing the equipment to complete the cooling task in a shorter time and effectively recover waste heat, thereby improving energy utilization efficiency and environmental friendliness. In the second embodiment, the projection of the secondary heat exchange tube 302 on the vertical plane is designed in a wavy shape, which not only improves the working performance of the cooling equipment, but also greatly reduces energy consumption and operating costs.

[0030] like Fig.11 As shown, it is a third embodiment of a heat storage closed cooling device with waste heat recovery. The heat exchange tube group 3 of the cooling device has 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 body 1. Specifically, a waste heat recovery body 20 is arranged beside the cooling body 1. The waste heat recovery unit includes the waste heat recovery body 20. The bottom of the waste heat recovery body 20 has a second water collecting tank 2001. The secondary heat exchange tube 302 is arranged in the cooling body 1. One end is connected to the heat exchange water inlet 8, and the other end is connected to the heat exchange water outlet 9, and a spray pipe 2 is arranged in the cooling body 1 and the spray pipe 2 is arranged above the secondary heat exchange pipe 302; the primary heat exchange pipe 301 is arranged in the waste heat recovery body 20, and a guide cover 4 is also arranged in the waste heat recovery body 20 and the guide cover 4 is arranged above the primary heat exchange pipe 301, and the heat recovery device 5 is installed below the guide cover 4 through the support plate 19, and the guide port 401 at the bottom of the guide cover 4 is connected to the four heat recovery devices 5 through the one-to-four water distribution pipe 17, and then as shown in Fig.12As shown, the primary heat exchange tube 301 is sequentially wound around the four heat recovery devices 5, and the two ends of the primary heat exchange tube 301 have 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 through a first three-way pipe 24, and 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. The primary heat exchange water inlet 22, the primary heat exchange water outlet 23 and the first port 240 1 are provided with electromagnetic valves, and the second three-way pipe 25 has a second port 2501 for high-temperature medium to enter. In addition, different from the first embodiment, the connection between the water supply pipe 7 and the spray water inlet 15 is also connected to the waste heat recovery pipe 21, and the top of the waste heat recovery body 20 is provided with a guide hole 26, which is located above the guide cover 4, and one end of the waste heat recovery pipe 21 is connected to the guide hole 26. The spray water inlet 15 and the waste heat recovery pipe 21 are provided with electromagnetic valves. Therefore, if Fig.13 As shown, when the cooling 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 body 1. Since only the secondary heat exchange pipe 302 is working 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 8 through the second port 2501 and the first port 2401, thereby directly entering the cooling body 1 without passing through the waste heat recovery body 20; when the cooling body 1 and the waste heat recovery body 20 need to work at the same time, it is only necessary to close the solenoid valve on the first port 2401, and the high-temperature medium can go from the primary heat exchange water inlet 22 to the primary heat exchange pipe 301, and then from the primary heat exchange water outlet 23 to the heat exchange water inlet 8 to enter the secondary heat exchange pipe 302, thereby realizing the simultaneous operation of the two, achieving the effect of energy saving and efficient heat exchange.

[0031] 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 body 20 through the waste heat recovery pipe 21. Fig.12 At this time, the cooling water flows into each heat recovery device 5 along the guide cover 4, and after heat exchange with the first-level heat exchange tube 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 body 20, and a solenoid valve is installed on the heat storage pipe 27; similarly, the high-temperature water can flow into a heat storage device such as a hot water tank through the heat storage pipe 27. 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 that the heat of the water can be stored in time for subsequent use.

[0032] The specific working process is: 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, and the heat recovery device 5 drops the collected cooling water into the second water collection tank 2001 for storage, and then the high-temperature medium flows out from the primary heat exchange tube 301 and enters the secondary heat exchange tube 302. At this time, the high-temperature medium inside the cooling body 1 forms water mist through the spray pipe 2, and uses the water mist 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 is liquefied and then returns to the first water collection tank 101, and then is sent to the water supply pipe 7 by the water pump 6 to form circulating cooling.

[0033] It should be added that Figure 1 As shown, the top of the cooling body 1 of the above embodiment is also provided with a ventilation part 10, on which a servo motor 11 is installed, and the output end of the servo motor 11 is connected to a fan blade 12, a vent is opened on the side of the cooling body 1 and the vent is located between the air deflector 4 and the support plate 19, and a ventilation mesh cover 14 is installed on the vent, and the spray pipe 2 is a cross-shaped structure, and the spray nozzles 201 are evenly distributed on the spray pipe 2 and the spray nozzles 201 fall within the horizontal plane projection of the air deflector 4. The spray pipe 2 is arranged in a cross shape, and the evenly distributed spray nozzles 201 spray cooling water in the horizontal plane projection area of ​​the air deflector 4, providing efficient cooling. Under the combined effect of the circulation of cooling water in the air deflector 4 and the forced ventilation of the fan, the heat generated by the electronic product can be quickly taken away, and the hot air is discharged through the vent and the ventilation mesh cover 14, ensuring that the equipment can still maintain the cooling effect in a hot environment, thereby achieving efficient and stable thermal management and improving the reliability and life of the electronic product.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in 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.

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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