Thermoelectric refrigeration and phase change energy storage coupled ventilation cooling device

Abstract

The utility model relates to a thermoelectric refrigeration and phase change energy storage coupled ventilation cooling device, which belongs to the technical field of cabinet cooling devices, and comprises a thermoelectric refrigeration module, a phase change cold storage module, a fin plate and an internal circulation fan, one side of the fin plate is connected with a cold surface of the thermoelectric refrigeration module, the other side of the fin plate is connected with the phase change cold storage module, and the internal circulation fan is connected with the thermoelectric refrigeration module. The internal circulation fan is fixed to the phase change cold storage module, the phase change cold storage module is provided with a ventilation grid, the ventilation grid is communicated with the fin plate and the internal circulation fan, by means of the structure, the thermoelectric cooling module cools the cold face side of the thermoelectric cooling module, cooling capacity is transmitted to the fin plate, and the internal circulation fan is started to enable air to flow through the fin plate; when the thermoelectric refrigeration module fails to work, the thermoelectric refrigeration module exchanges heat with the low-temperature fin plate to form cold air, the cold air flows through the phase change cold storage module through the ventilation grid, part of cold energy is stored in the phase change cold storage module, when the thermoelectric refrigeration module stops working due to faults, the cold energy in the phase change cold storage module can serve as an emergency cold source to cool the flowing air, and the cooling time of the interior of the cabinet is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of cabinet cooling devices, and specifically relates to a ventilation and cooling device that couples thermoelectric refrigeration with phase change energy storage. Background Technology

[0002] Server racks are widely used in power, computing servers, data centers, energy storage batteries, communication base stations and other fields. Because server racks usually contain heat-generating equipment such as power supplies, inverters, high-power chips, battery modules and signal transceivers, the heat from these devices accumulates continuously inside the rack, causing the temperature of the equipment inside the rack to rise, resulting in problems such as server crashes, battery thermal runaway and overheating and burnout of high-power-density power electronic equipment.

[0003] Currently, the main cooling methods for various server racks include natural ventilation cooling, forced ventilation cooling, liquid cooling, compression cooling, and thermoelectric cooling. Natural ventilation cooling utilizes natural air convection for heat dissipation, which cannot meet the heat dissipation requirements of high-power server rack equipment. Forced ventilation cooling relies on fans to increase convection, but when the ambient temperature rises, the cooling and temperature control capabilities of the hot air are significantly reduced. Liquid cooling usually requires chillers and fluid pipelines, which pose risks such as refrigerant leakage and corrosion. Compression cooling uses refrigerant vapor compression cycles. On the one hand, compression cooling systems are large in size and cannot meet the cooling and temperature control requirements of small server rack spaces. On the other hand, frequent start-stop cycles of the compressor reduce its lifespan and result in a high failure rate of the cooling system.

[0004] Thermoelectric cooling is a technology that achieves cooling based on the thermoelectric effect of semiconductor materials. It can cool by simply energizing the thermoelectric cooling element. It has no moving parts and has high reliability. However, when the thermoelectric cooling module malfunctions and stops working, it will cause cooling failure and affect the cooling of the inside of the cabinet.

[0005] Therefore, a ventilation and cooling device that couples thermoelectric refrigeration with phase change energy storage to provide auxiliary emergency cooling is urgently needed. Utility Model Content

[0006] This invention provides a ventilation and cooling device that couples thermoelectric refrigeration with phase change energy storage, in order to solve the technical problem that existing thermoelectric refrigeration devices do not have emergency cooling capabilities when a failure occurs.

[0007] This utility model is achieved through the following technical solution: a ventilation and cooling device coupling thermoelectric cooling and phase change energy storage, including a thermoelectric cooling module, a phase change energy storage module, a finned plate and an internal circulation fan. One side of the finned plate is connected to the cold surface of the thermoelectric cooling module, and the other side of the finned plate is connected to the phase change energy storage module. The internal circulation fan is fixed on the phase change energy storage module. The phase change energy storage module is provided with a ventilation grid, and the ventilation grid connects the finned plate and the internal circulation fan.

[0008] To better realize this utility model, the above structure is further optimized by including a support plate. The support plate is used to fix and connect to the cabinet wall. The support plate is provided with mounting holes. The finned plate is fixed on the support plate through the mounting holes. The thermoelectric cooling module is located on the outside of the support plate, and the phase change cold storage module and the internal circulation fan are located on the inside of the support plate.

[0009] To better realize this utility model, further optimizations are made to the above structure. The finned plate includes a base plate and a fin assembly. The base plate is fixed on the mounting hole. The fin assembly is located inside the support plate and is in close contact with the phase change cold storage module through a snap fastener. The thermoelectric cooling module is located outside the support plate, and the cold surface of the thermoelectric cooling module is fixedly connected to the base plate.

[0010] To better realize this utility model, further optimizations are made to the above structure. The phase change cold storage module is filled with solid-liquid phase change cold storage material, and a breather valve is provided on the top of the phase change cold storage module.

[0011] To better realize this utility model, the above structure is further optimized by including a heat pipe radiator, which is connected to the hot surface of the thermoelectric cooling module.

[0012] To better realize this utility model, the above structure is further optimized by including a protective cover, which covers the outside of the support plate. The protective cover is divided into an upper chamber and a lower chamber by a partition, and the thermoelectric cooling module and heat pipe radiator are arranged in the lower chamber.

[0013] To better realize this utility model, the above structure is further optimized by providing ventilation and heat dissipation holes in the cavity wall of the lower chamber.

[0014] To better realize this utility model, the above structure is further optimized by including an external circulation fan. The support plate is provided with fixing holes, and the external circulation fan is fixed on the support plate through the fixing holes. The air outlet of the external circulation fan is connected to the upper chamber.

[0015] To better realize this utility model, the above structure is further optimized by providing a waterproof and dustproof cover on the cavity wall of the upper chamber.

[0016] To better realize this utility model, further optimizations are made to the above structure, and the air outlet of the external circulation fan is provided with a backflow preventer.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] The ventilation and cooling device coupled with thermoelectric cooling and phase change energy storage provided by this utility model includes a thermoelectric cooling module, a phase change energy storage module, a finned plate, and an internal circulation fan. One side of the finned plate is connected to the cold side of the thermoelectric cooling module, and the other side of the finned plate is connected to the phase change energy storage module. The internal circulation fan is fixed on the phase change energy storage module. The phase change energy storage module is provided with a ventilation grid, which connects the finned plate and the internal circulation fan. With this structure, when in use, the thermoelectric cooling module is powered on to cool down its cold side, and the cooling energy is transferred to the finned plate. The internal circulation fan starts to make air flow through the finned plate, exchange heat with the low-temperature finned plate to form cold air, and then flow through the ventilation grid to the phase change energy storage module, so that some of the cooling energy is stored in the phase change energy storage module. Even if the thermoelectric cooling module stops working due to a fault, the cooling energy in the phase change energy storage module can be used as an emergency cold source to cool the flowing air, thereby extending the cooling time inside the cabinet and making this utility model more practical. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the ventilation and cooling device that couples thermoelectric refrigeration and phase change energy storage in this utility model;

[0021] Figure 2 This is a schematic diagram showing the connection between the thermoelectric refrigeration module and the phase change cold storage module in this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection between the thermoelectric refrigeration module and the phase change cold storage module in this utility model from another perspective;

[0023] Figure 4 This is a schematic diagram of the structure of the protective cover in this utility model;

[0024] Figure 5 This is a schematic diagram of the outer side of the support plate in this utility model;

[0025] Figure 6 This is a schematic diagram of the ventilation and cooling device of the present invention, which couples thermoelectric refrigeration and phase change energy storage, installed on the cabinet.

[0026] In the picture:

[0027] 1-Thermoelectric cooling module; 2-Phase change cold storage module; 3-Fin plate; 4-Internal circulation fan; 5-Ventilation grid; 6-Support plate; 7-Mounting hole; 8-Base plate; 9-Fin assembly; 10-Breathing valve; 11-Heat pipe radiator; 12-Protective cover; 13-Upper chamber; 14-Lower chamber; 15-Ventilation and heat dissipation hole; 16-External circulation fan; 17-Fixing hole; 18-Partition plate; 19-Waterproof and dustproof cover; 20-Backflow preventer. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1:

[0032] In this embodiment, a ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage, such as... Figures 1 to 6As shown, it includes a thermoelectric cooling module 1, a phase change cold storage module 2, a finned plate 3, and an internal circulation fan 4. Specifically, one side of the finned plate 3 is connected to the cold surface of the thermoelectric cooling module 1, and the other side of the finned plate 3 is connected to the phase change cold storage module 2, for receiving and conducting the cold energy generated by the thermoelectric cooling module 1. The internal circulation fan 4 is fixed on the phase change cold storage module 2. The phase change cold storage module 2 is used to absorb and store the cold energy carried in the cold air. The phase change cold storage module 2 is provided with a ventilation grid 5, which connects the finned plate 3 and the internal circulation fan 4.

[0033] With this structure, when in use, the thermoelectric cooling module 1 is powered on to cool its cold side, and the cold energy is transferred to the finned plate 3. The internal circulation fan 4 is started to make air flow through the finned plate 3, and exchange heat with the low temperature finned plate 3 to form cold air. Then, it flows through the ventilation grid 5 and through the phase change cold storage module 2, so that part of the cold energy is stored in the phase change cold storage module 2. Even if the thermoelectric cooling module 1 stops working due to a fault, the cold energy in the phase change cold storage module 2 can be used as an emergency cold source to cool the flowing air, thereby extending the cooling time inside the cabinet and making the utility model more practical.

[0034] As one specific implementation method of this embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, it also includes a support plate 6, which is used to fix and connect to the cabinet wall so that the ventilation and cooling device is installed on the cabinet wall. Specifically, the support plate 6 is provided with mounting holes 7, and the finned plate 3 is fixed to the support plate 6 through the mounting holes 7. The thermoelectric cooling module 1 is located on the outside of the support plate 6, that is, outside the cabinet, and the phase change cold storage module 2 and the internal circulation fan 4 are located on the inside of the support plate 6, that is, inside the cabinet. The cooling capacity generated by the thermoelectric cooling module 1 is transferred to the phase change cold storage module 2 for storage through the finned plate 3. The internal circulation fan 4 forms airflow in the cabinet, so that the air in the cabinet passes through the finned plate 3 and the ventilation grid 5 and passes through the phase change cold storage module 2, thereby absorbing the cooling capacity stored in the phase change cold storage module 2 to form cooling air, and continuously cooling the equipment in the cabinet.

[0035] In this embodiment, as Figures 1 to 3As shown, the finned plate 3 includes a base plate 8 and a fin assembly 9. The base plate 8 is fixed to the mounting hole 7 by screws. The fin assembly 9 is located inside the support plate 6 and is in close contact with the phase change cold storage module 2 by a snap-fit. The thermoelectric cooling module 1 is located outside the support plate 6. The cold surface of the thermoelectric cooling module 1 is fixedly connected to the base plate 8. The fin assembly 9 consists of multiple parallel and spaced fins with ventilable gaps between them, allowing air to pass through the gaps and exchange heat with the low-temperature fin assembly 9 to form cooling air. This air then flows through the ventilation grid 5 and exchanges heat with the phase change cold storage module 2, allowing some of the cold energy to be stored in the phase change cold storage module 2.

[0036] The phase change energy storage module 2 is filled with solid-liquid phase change energy storage material. The top of the phase change energy storage module 2 is equipped with a breather valve 10. The solid-liquid phase change energy storage material can exchange heat with the outside world through solid-liquid phase change to achieve the function of energy storage and release of cold energy. It is preferably a straight-chain alkane or an inorganic salt. The cold air cooled by the fin group 9 passes through the ventilation grid 5 and exchanges heat with the phase change energy storage module 2, thereby enabling the solid-liquid phase change energy storage material to store cold energy. The breather valve 10 connects the internal and external spaces of the phase change energy storage module 2 to balance the pressure between the solid-liquid phase change energy storage material space in the phase change energy storage module 2 and the external environment, so as to prevent the phase change energy storage module 2 from overpressure rupture or depressurization deformation due to the volume change of the phase change material when the solid-liquid phase change energy storage material undergoes phase change.

[0037] In this embodiment, as Figure 2 , Figure 3 and Figure 5 As shown, it also includes a heat pipe radiator 11, which is connected to the hot surface of the thermoelectric cooling module 1 via a heat pipe. The heat pipe radiator 11 is used to quickly dissipate the heat from the hot surface of the thermoelectric cooling module 1 to the environment, preventing the thermoelectric cooling module 1 from malfunctioning due to excessive temperature.

[0038] As an optimization, such as Figure 1 , Figure 4 and Figure 6 As shown, it also includes a protective cover 12, which is screwed onto the outside of the support plate 6. The protective cover 12 is divided into an upper chamber 13 and a lower chamber 14 by a partition 18. The thermoelectric cooling module 1 and the heat pipe radiator 11 are disposed in the lower chamber 14. The cavity wall of the lower chamber 14 is provided with ventilation and heat dissipation holes 15. The protective cover 12 is used to protect the thermoelectric cooling module 1 and the heat pipe radiator 11, and plays a role in waterproofing, dustproofing, heat dissipation and ventilation.

[0039] In this embodiment, as Figure 1 and Figure 5As shown, it also includes an external circulation fan 16. The support plate 6 is provided with fixing holes 17, and the external circulation fan 16 is fixed to the support plate 6 through the fixing holes 17. The air outlet of the external circulation fan 16 is connected to the upper chamber 13. When the external ambient temperature is lower than the internal temperature of the cabinet, the external circulation fan 16 is started, and the thermoelectric cooling module 1 stops working. At this time, the hot air inside the cabinet is discharged to the environment through the external circulation fan 16. When the external ambient temperature is higher than the internal temperature of the cabinet, the external circulation fan 16 stops, and the thermoelectric cooling module 1 and the internal circulation fan 4 are started, and the air inside the cabinet circulates in the internal circulation mode. Driven by the fan 4, the air flows along the path of the finned assembly 9 and ventilation grille 5 within the cabinet space, and is finally blown back into the cabinet by the internal circulation fan 4, forming an internal circulation of air inside the cabinet. During this process, the cooling energy generated by the thermoelectric cooling module 1 is continuously exchanged with the hot air inside the cabinet through the finned plate 3, causing the hot air to cool down and form cold air. The cold air then stores part of the cooling energy in the phase change cold storage module 2, so that when the thermoelectric cooling module 1 stops due to a fault, the cooling energy stored in the thermoelectric cooling module 1 can be used as a backup cold source to continue cooling the hot air, extending the cooling time inside the cabinet.

[0040] As an optimization, such as Figure 4 and Figure 6 As shown, the upper chamber 13 is provided with a waterproof and dustproof cover 19 on its cavity wall. The waterproof and dustproof cover 19 has a dustproof mesh inside. When the external circulation fan 16 is working, the hot air inside the cabinet enters the upper chamber 13 under the drive of the external circulation fan 16 and is discharged to the external environment through the waterproof and dustproof cover 19. The waterproof and dustproof cover 19 plays the role of preventing water ingress and dust accumulation. The air outlet of the external circulation fan 16 is provided with a backflow preventer 20. When the external circulation fan 16 is stopped, the backflow preventer 20 is used to prevent hot air in the external environment from flowing back into the cabinet through the external circulation fan 16.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage, characterized in that: The device includes a thermoelectric cooling module (1), a phase change cold storage module (2), a finned plate (3), and an internal circulation fan (4). One side of the finned plate (3) is connected to the cold surface of the thermoelectric cooling module (1), and the other side of the finned plate (3) is connected to the phase change cold storage module (2). The internal circulation fan (4) is fixed on the phase change cold storage module (2). The phase change cold storage module (2) is provided with a ventilation grid (5), which connects the finned plate (3) and the internal circulation fan (4).

2. The ventilation cooling device coupled with thermoelectric refrigeration and phase change energy storage according to claim 1, characterized in that: It also includes a support plate (6), which is used to fix and connect the cabinet wall. The support plate (6) is provided with mounting holes (7). The finned plate (3) is fixed on the support plate (6) through the mounting holes (7). The thermoelectric cooling module (1) is located on the outside of the support plate (6). The phase change cold storage module (2) and the internal circulation fan (4) are located on the inside of the support plate (6).

3. The ventilation cooling device coupled with thermoelectric refrigeration and phase change energy storage according to claim 2, characterized in that: The finned plate (3) includes a base plate (8) and a finned assembly (9). The base plate (8) is fixed on the mounting hole (7). The finned assembly (9) is located inside the support plate (6) and is in close contact with the phase change cold storage module (2) by a snap fastener. The cold surface of the thermoelectric cooling module (1) is fixedly connected to the base plate (8).

4. The ventilation cooling device coupled with thermoelectric refrigeration and phase change energy storage according to claim 3, characterized in that: The phase change cold storage module (2) is filled with solid-liquid phase change cold storage material, and the top of the phase change cold storage module (2) is provided with a breather valve (10).

5. A ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage according to claim 3, characterized in that: It also includes a heat pipe radiator (11), which is connected to the hot surface of the thermoelectric cooling module (1).

6. The ventilation cooling device coupled with thermoelectric refrigeration and phase change energy storage according to claim 5, characterized in that: It also includes a protective cover (12), which covers the outside of the support plate (6). The protective cover (12) is divided into an upper chamber (13) and a lower chamber (14) by a partition (18). The thermoelectric cooling module (1) and the heat pipe radiator (11) are located in the lower chamber (14).

7. A ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage according to claim 6, characterized in that: The lower chamber (14) has ventilation and heat dissipation holes (15) on its cavity wall.

8. A ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage according to claim 6, characterized in that: It also includes an external circulation fan (16), the support plate (6) is provided with a fixing hole (17), the external circulation fan (16) is fixed on the support plate (6) through the fixing hole (17), and the air outlet of the external circulation fan (16) is connected to the upper chamber (13).

9. A ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage according to claim 7, characterized in that: The upper chamber (13) is provided with a waterproof and dustproof cover (19) on its cavity wall.

10. A ventilation cooling device coupling thermoelectric refrigeration and phase change energy storage according to claim 8, characterized in that: The outlet of the external circulation fan (16) is equipped with a backflow preventer (20).

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