Water chilling unit applied to energy storage cabinet

Abstract

The utility model discloses a water chilling unit applied to an energy storage cabinet. The fluorine system comprises a compressor, a condenser and a heat exchanger, the condenser is obliquely arranged in the frame and divides the frame into an upper frame and a lower frame, the outer side of the upper frame is provided with a sealing plate, the sealing plate and the condenser form a closed air cavity, the lower frame is provided with the compressor and the heat exchanger, and the cold ends of the compressor, the condenser and the heat exchanger are sequentially communicated to form a refrigerant circulation loop; the fan is arranged in the sealing plate of the upper frame and is communicated with the closed air cavity; the secondary refrigerant system is arranged on the lower frame and used for being connected with the hot end of the heat exchanger and providing secondary refrigerant for the energy storage cabinet. According to the water chilling unit applied to the energy storage cabinet, limited space can be fully utilized, and meanwhile the cooling effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chillers, and more specifically, to a chiller applied to an energy storage cabinet. Background Art

[0002] The energy storage cabinet is a device that can store electrical energy, and the chiller, as an important auxiliary equipment of the energy storage cabinet, is mainly used to control the temperature of the internal environment of the energy storage cabinet to ensure that it works in the best condition.

[0003] Most chillers used in energy storage cabinets need to be customized according to the actual needs of the energy storage cabinet. For example, in terms of space occupation, the available space for chillers is limited. However, in the process of implementing this application, the inventors found that the existing technology has at least the following technical problems:

[0004] In order to ensure the cooling effect of the chiller, the heat exchange area between the condenser and the wind is increased, that is, the heat dissipation area is increased. As a result, the condenser is larger in size, which causes the condenser to occupy a large space and fail to fully utilize the limited space.

[0005] In summary, how to solve the problem that the existing chillers used in energy storage cabinets cannot fully utilize the limited space while ensuring the cooling effect is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, an object of the present invention is to provide a water chiller applied to an energy storage cabinet, which can fully utilize limited space and ensure cooling effect at the same time.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A chiller unit applied to an energy storage cabinet, comprising:

[0009] frame;

[0010] A fluorine system comprising a compressor, a condenser, and a heat exchanger, wherein the condenser is tiltedly arranged in the frame, and the frame is divided into an upper frame and a lower frame. A sealing plate is provided on the outer side of the upper frame to form a closed air cavity with the condenser. The compressor and the heat exchanger are arranged on the lower frame, and the cold ends of the compressor, the condenser, and the heat exchanger are sequentially connected to form a refrigerant circulation loop;

[0011] A fan is provided in the sealing plate of the upper frame and is in communication with the closed air cavity;

[0012] The coolant system is provided on the lower frame and is used to connect to the hot end of the heat exchanger and provide coolant to the energy storage cabinet.

[0013] Preferably, it also includes an electronic control unit, which is arranged in the sealing plate of the upper frame and is electrically connected to the fluorine system, the refrigerant system and the fan.

[0014] Preferably, the sealing plate includes a top sealing plate, a side sealing plate and two triangular sealing plates. The top sealing plate is arranged at the top end of the frame. One triangular sealing plate, the side sealing plate and the other triangular sealing plate are arranged in sequence around the three circumferences of the frame. The top sealing plate, the side sealing plate, the two triangular sealing plates and the condenser form the closed air cavity; the fan is arranged on the top sealing plate, and the electronic control unit is arranged on the side sealing plate.

[0015] Preferably, one side edge of the side sealing plate is hinged to the side beam of the upper frame.

[0016] Preferably, an electric control box is provided on the side sealing plate, and the electric control box includes a box body for placing the electric control unit and a cover plate rotatably connected to the box body.

[0017] Preferably, a bottom sealing plate is provided at the bottom end of the frame, and the compressor, the heat exchanger and the refrigerant system are all fixed on the bottom sealing plate.

[0018] Preferably, the brine system includes a pump, the liquid inlet of the pump is connected to the energy storage cabinet via a liquid inlet pipe, the liquid outlet of the pump is connected to the hot end inlet of the heat exchanger via a connecting pipe, and the hot end outlet of the heat exchanger is connected to the energy storage cabinet via a liquid outlet pipe, so as to form a brine circulation loop;

[0019] The vertical heat exchanger is located below the condenser at a preset height interval and is arranged side by side with the pump at a preset horizontal interval, and the connecting pipe is horizontally located above the liquid outlet pipe and the liquid inlet pipe.

[0020] Preferably, the liquid outlet pipe is an L-shaped structure, the first pipe section of the liquid outlet pipe is parallel to the connecting pipe and connected to the hot end outlet of the heat exchanger, and the second pipe section of the liquid outlet pipe is close to and parallel to the liquid inlet pipe.

[0021] Preferably, a vertical bypass pipe is provided between the connecting pipe and the first pipe section of the liquid outlet pipe.

[0022] Preferably, the refrigerant system further includes a liquid replenishing tank located above the liquid inlet pipe, the liquid replenishing tank is connected to the liquid inlet pipe, and the liquid replenishing tank is provided with an access port connected to the pressure relief port of the safety valve provided on the liquid outlet pipe.

[0023] The utility model provides a chiller for an energy storage cabinet, wherein the condenser and the outer sealing plate of the upper frame form a closed air cavity, and the sealing plate is provided with a fan connected to the closed air cavity. As a result, when the fan is started, a negative pressure is generated in the closed air cavity, forcing air to enter the closed air cavity through the gaps between the tube bundles of the condenser, and then the air is discharged through the fan. In this process, since the condenser and the sealing plate form a closed air cavity, the air can only enter the closed air cavity through the gaps between the tube bundles of the condenser, so that the air and the tube bundles of the condenser are fully in contact with each other for heat exchange, that is, the effective heat exchange area of ​​the condenser is increased, thereby improving the heat dissipation effect of the condenser and ensuring the cooling effect of the condenser. In this way, the high-temperature refrigerant discharged from the compressor can be condensed by the condenser to form a low-temperature refrigerant with sufficient cooling capacity. After the low-temperature refrigerant passes into the heat exchanger, it exchanges heat with the refrigerant in the refrigerant system. The refrigerant in the refrigerant system is cooled to form a low-temperature refrigerant and is discharged into the energy storage cabinet, thereby cooling the energy storage cabinet and ensuring the cooling effect of the energy storage cabinet.

[0024] Furthermore, the condenser is tilted within the frame, dividing it into an upper and lower frame. The upper frame features a closed air chamber for condenser heat dissipation, while the lower frame houses the remaining components of the fluorine system and the brine system. This allows for a more compact and rational arrangement of components within a limited space, effectively utilizing the available space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a chiller applied to an energy storage cabinet provided by the present invention from one perspective;

[0027] Figure 2 This is a structural schematic diagram from another perspective of a chiller applied to an energy storage cabinet provided by the present invention;

[0028] Figure 3 This is a structural schematic diagram of the coolant system provided by the utility model.

[0029] Reference numerals:

[0030] 1-frame; 2-fluorine system; 3-refrigerant system; 4-fan; 5-electrical control box;

[0031] 11-upper frame; 12-lower frame; 111-top sealing plate; 112-side sealing plate; 113-triangular sealing plate; 121-mesh plate; 122-bottom sealing plate;

[0032] 21- compressor; 22- condenser; 23- heat exchanger; 24- electronic expansion valve;

[0033] 31-Pump; 32-Filter; 33-Liquid replenishing tank; 34-Exhaust valve; 35-Safety valve; 36-Expansion tank; 37-Liquid filling port; I-Liquid inlet pipe; II-Connecting pipe; III-Liquid outlet pipe; IV-Bypass pipe; VZ-type pipe. DETAILED DESCRIPTION

[0034] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0035] The core of the utility model is to provide a chiller applied to an energy storage cabinet, which can make full use of limited space and ensure cooling effect at the same time.

[0036] It should be noted that in this embodiment, the directions or positional relationships indicated by "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application.

[0037] Please refer to Figure 1 The present application provides a chiller for an energy storage cabinet, comprising a frame 1, a fluorine system 2, a fan 4, and a refrigerant system 3. The fluorine system 2 comprises a compressor 21, a condenser 22, and a heat exchanger 23. The condenser 22 is tiltedly arranged in the frame 1, and the frame 1 is divided into an upper frame 11 and a lower frame 12. A sealing plate is provided on the outer side of the upper frame 11, forming a closed air cavity with the condenser 22. The lower frame 12 is provided with the compressor 21 and the heat exchanger 23, and the cold ends of the compressor 21, condenser 22, and heat exchanger 23 are connected in sequence to form a refrigerant circulation loop; the fan 4 is provided in the sealing plate of the upper frame 11 and is connected to the closed air cavity; the refrigerant system 3 is provided in the lower frame 12, used to connect to the hot end of the heat exchanger 23 and provide refrigerant to the energy storage cabinet.

[0038] It should be noted that the specific structure of the frame 1 is customized according to the actual needs of the energy storage cabinet. The frame 1 is generally a vertical frame 1, and the vertical space and horizontal space of the frame 1 are limited.

[0039] The fluorine system 2 is used to cool the refrigerant in the refrigerant system 3, and includes a compressor 21, a condenser 22, and a heat exchanger 23. The refrigerant outlet of the compressor 21, the condenser 22, the heat exchanger 23, and the refrigerant inlet of the compressor 21 are connected in sequence through pipelines to form a refrigerant circulation loop. The compressor 21 is used to drive the refrigerant to circulate in the refrigerant circulation loop. Specifically, the compressor 21 compresses the low-pressure and low-temperature gaseous refrigerant into a high-pressure and high-temperature gaseous refrigerant, and passes the high-temperature gaseous refrigerant into the condenser 22 to condense and cool it into a low-temperature liquid refrigerant. The low-temperature liquid refrigerant flows into the cold end of the heat exchanger 23 and exchanges heat with the refrigerant in the refrigerant system 3 flowing through the hot end of the heat exchanger 23 to form a high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant then flows back into the compressor 21, so that the refrigerant circulates to achieve continuous cooling of the refrigerant.

[0040] Optionally, an electronic expansion valve 24 is provided on the pipeline between the compressor 21 and the condenser 22. The electronic expansion valve 24 throttles and reduces the pressure of the high-pressure, high-temperature gaseous refrigerant discharged from the compressor 21 to a low-pressure, high-temperature gaseous refrigerant, thereby protecting components in the refrigerant circulation circuit from damage. It should also be noted that the refrigerant in the refrigerant circulation circuit is typically Freon.

[0041] The brine system 3 contains brine and is connected to the hot end of the heat exchanger 23. It is used to circulate the brine between the hot end of the heat exchanger 23 and the energy storage cabinet. Thus, the high-temperature brine returning from the energy storage cabinet exchanges heat with the low-temperature gaseous refrigerant at the cold end of the heat exchanger 23 to form a low-temperature brine. This low-temperature brine is then discharged into the energy storage cabinet, cooling the internal environment of the energy storage cabinet. It should be noted that the brine in the brine system 3 is typically water.

[0042] In the above-described embodiment of the chiller for an energy storage cabinet, the condenser 22 and the outer cover plate 112 of the upper frame 11 form a closed air cavity, and the cover plate is provided with a fan 4 that communicates with the closed air cavity. Consequently, when the fan 4 is activated, negative pressure is generated within the closed air cavity, forcing air into the closed air cavity through the gaps between the tube bundles of the condenser 22. The air is then discharged through the fan 4. During this process, since the condenser 22 and the sealing plate form a closed air cavity, the air can only enter the closed air cavity through the gap between the tube bundles of the condenser 22, so that the air and the tube bundles of the condenser 22 are fully in contact for heat exchange, that is, the effective heat exchange area of ​​the condenser 22 is increased, so as to improve the heat dissipation effect of the condenser 22, thereby ensuring the cooling effect of the condenser 22. In this way, the high-temperature refrigerant discharged by the compressor 21 can be condensed by the condenser 22 to form a low-temperature refrigerant with sufficient cooling capacity. After the low-temperature refrigerant passes into the heat exchanger 23, it exchanges heat with the refrigerant in the refrigerant system 3. The refrigerant in the refrigerant system 3 is cooled to form a low-temperature refrigerant and is discharged into the energy storage cabinet, thereby realizing cooling of the energy storage cabinet, thereby ensuring the cooling effect of the energy storage cabinet.

[0043] Furthermore, the condenser 22 is tilted within the frame 1, dividing the frame 1 into an upper frame 11 and a lower frame 12. The upper frame 11 has a closed air cavity for dissipating heat from the condenser 22, while the lower frame 12 houses the remaining components of the fluorine system 2 and the brine system 3. This allows for a more compact and rational arrangement of components within a limited space, thus fully utilizing the limited space.

[0044] Based on the above embodiment, the present application also includes an electronic control unit, which is arranged in the sealing plate of the upper frame 11 and is electrically connected to the fluorine system 2, the refrigerant system 3 and the fan 4.

[0045] It is understood that the electronic control unit is connected to the signal lines of the electrical components in the fan 4, fluorine system 2, and brine system 3, enabling automated and precise control of the chiller. The electronic control unit is located in the cover plate of the upper frame 11, while the refrigerant circulation loop in the fluorine system 2 and the brine circulation loop in the brine system 3 are both located in the lower frame 12. This separates the water and electricity, not only improving the unit's safety but also reducing the resistance of the entire frame 1.

[0046] Considering the specific layout of the upper frame 11, in one embodiment, please refer to Figure 1 and Figure 2 The sealing plate includes a top sealing plate 111, a side sealing plate 112 and two triangular sealing plates 113. The top sealing plate 111 is arranged at the top of the frame 1. A triangular sealing plate 113, a side sealing plate 112 and another triangular sealing plate 113 are arranged in sequence around the three circumferences of the frame 1. The top sealing plate 111, the side sealing plate 112, the two triangular sealing plates 113 and the condenser 22 form a closed air cavity.

[0047] Specifically, as attached Figure 2 As shown, the condenser 22 is arranged between the right top side beam and the left side beam of the frame 1 at a certain inclination angle, a top sealing plate 111 is arranged at the top of the frame 1, and the right side of the top sealing plate 111 is closed to the left side of the condenser 22, a side sealing plate 112 is arranged on the left side of the frame 1 between the left side of the top sealing plate 111 and the left side of the condenser 22, a front triangular sealing plate 113 is arranged on the front side of the frame 1 between the front side of the top sealing plate 111 and the front side of the condenser 22, and a rear triangular sealing plate 113 is arranged on the rear side of the frame 1 between the rear side of the top sealing plate 111 and the rear side of the condenser 22, so that the top sealing plate 111, the side sealing plate 112, the two triangular sealing plates 113 and the condenser 22 form a closed air cavity. It can be seen from this that the right side of the condenser 22, that is, the top side, is set at the topmost side of the frame 1, so that the condenser 22 can make maximum use of the space within the limited space. This is equivalent to allowing the frame 1 to accommodate a larger condenser 22 in the same space, which is beneficial to improving the heat dissipation effect of the condenser 22.

[0048] For further information, please refer to Figure 1 The fan 4 is arranged on the top sealing plate 111, and the electronic control unit is arranged on the side sealing plate 112. The fan 4 and the electronic control unit are reasonably arranged, which not only facilitates the fan 4 to exhaust air for heat dissipation and manual maintenance of the electronic control unit, but also prevents the fan 4 and the electronic control unit from being too close to each other and interfering with each other.

[0049] Optional, please refer to Figure 2 A mesh plate 121 is provided on one side of the lower frame 12. Specifically, a mesh plate 121 is provided on the left side of the frame 1 in addition to the side sealing plate 112. The mesh plate 121 cooperates with the upper air duct structure of the storage cabinet. The air enters the lower frame 12 through the mesh plate 121 and then flows through the condenser 22. It not only improves the ventilation efficiency and is beneficial to the rapid heat dissipation of the condenser 22, but also ventilates and dissipates heat for the components placed on the lower frame 12, which is beneficial to ensure the safe and stable operation of the fluorine system 2 and the refrigerant system 3, that is, it is beneficial to the safe and stable operation of the unit.

[0050] Based on the above examples, please refer to Figure 1 One side of the side sealing plate 112 is hinged to the side beam of the upper frame 11.

[0051] Specifically, one side of the side sealing plate 112 is fixedly connected to one end of the hinge, and the other end of the hinge is fixed to the side beam of the frame 1. The two ends of the hinge are connected by a rotating shaft. Thus, the side sealing plate 112 can be flipped open to facilitate manual maintenance of the condenser 22 and fan 4 placed in the closed air cavity.

[0052] For further information, please refer to Figure 1 An electric control box 5 is provided on the side sealing plate 112. The electric control box 5 includes a box body for placing the electric control unit and a cover plate rotatably connected to the box body.

[0053] Specifically, the box body is arranged in the side sealing plate 112, the electronic control unit is placed in the box body, and the box body is connected to the cover plate through a hinge structure. The specific setting of the hinge structure is similar to the above-described hinged connection method between the side sealing plate 112 and the side beam, and will not be repeated here. The hinge structure can realize the flipping and closing action of the cover plate, which not only protects the electronic control unit, but also facilitates the maintenance of the electronic control unit.

[0054] In summary, in this embodiment, the side sealing plate 112 and the electric control box 5 are both configured to be reversible structures, which facilitates maintenance of key components of the unit.

[0055] Considering the specific layout of the lower frame 12, in one embodiment, please refer to Figure 1 A bottom sealing plate 122 is provided at the bottom end of the frame 1 , and the compressor 21 , the heat exchanger 23 and the refrigerant system 3 are all fixed on the bottom sealing plate 122 .

[0056] It can be understood that the frame 1 located below the condenser 22 belongs to the lower frame 12, and the compressor 21 and heat exchanger 23 of the fluorine system 2 and the refrigerant system 3 are all fixed to the bottom end of the frame 1, so as to maximize the use of the vertical space between the condenser 22 and the bottom end of the frame 1, that is, to make full use of the space of the lower frame 12.

[0057] Considering the specific layout of the brine system 3, based on the above embodiment, please refer to Figure 3 The brine system 3 includes a pump 31. The liquid inlet of pump 31 is connected to the energy storage cabinet via a liquid inlet pipe I. The liquid outlet of pump 31 is connected to the hot end inlet of heat exchanger 23 via a connecting pipe II. The hot end outlet of heat exchanger 23 is connected to the energy storage cabinet via a liquid outlet pipe III, thereby forming a brine circulation loop. Thus, pump 31 is used to provide power for the brine to circulate in the brine circulation loop. Specifically, pump 31 sequentially directs the high-temperature brine returning from the energy storage cabinet through the liquid inlet pipe I and connecting pipe II into the hot end of heat exchanger 23. The high-temperature brine exchanges heat with the low-temperature refrigerant at the cold end of heat exchanger 23 to form a low-temperature brine. The low-temperature brine is then discharged into the energy storage cabinet via the liquid outlet pipe III to reduce the ambient temperature of the energy storage cabinet.

[0058] The vertical heat exchanger 23 is located below the condenser 22 at a preset height interval and is arranged side by side with the pump 31 at a preset horizontal interval. The connecting pipe II is horizontally located above the liquid outlet pipe III and the liquid inlet pipe I.

[0059] It is understood that the heat exchanger 23 is vertically disposed below the condenser 22, which fully utilizes the vertical space of the lower frame 12 and, in turn, facilitates full utilization of the overall space of the frame 1. The pump 31 and heat exchanger 23 are disposed side by side, with the liquid outlet of the pump 31 aligned with the hot inlet of the heat exchanger 23. This allows the connecting pipe II to horizontally connect the pump 31 and the heat exchanger 23, thereby making the layout of the pump 31 and the heat exchanger 23 more compact, shortening the length of the connecting pipe II and saving manufacturing costs. Furthermore, the connecting pipe II is horizontally positioned above the liquid outlet pipe III and the liquid inlet pipe I, which means that the connecting pipe II is at a certain height from the bottom end of the frame 1. The vertical space between the connecting pipe II and the bottom end of the frame 1 can be used to accommodate the compressor 21 of the fluorine system 2, thereby further fully utilizing the space and making the unit layout more compact.

[0060] In one embodiment, please refer to Figure 3 The liquid outlet pipe III has an L-shaped structure. The first section of the liquid outlet pipe III is parallel to the connecting pipe II and connected to the hot end outlet of the heat exchanger 23. The second section of the liquid outlet pipe III is arranged close to and parallel to the liquid inlet pipe I. The L-shaped liquid outlet pipe III adopts the above-mentioned structure. On the one hand, it makes the layout of the liquid inlet pipe I and the liquid outlet pipe III more compact, saving space. On the other hand, it shortens the length of the liquid outlet pipe III to save length, and reduces the resistance to the flow of the brine, thereby improving flow efficiency.

[0061] For preference, please refer to Figure 3 The expansion tank 36 is positioned adjacent to the second section of the liquid outlet pipe III, and the expansion pipe is connected to the liquid inlet pipe I via a Z-shaped pipe V. Thus, when the pressure of the brine circulation loop is lower than the pressure within the expansion tank 36, the expansion pipe replenishes the liquid within the bladder via the Z-shaped pipe V to the brine circulation loop, thereby maintaining a stable pressure in the brine circulation loop. It should be noted that due to the more compact layout of the liquid inlet pipe I and the liquid outlet pipe III, the length of the Z-shaped pipe V between the expansion tank 36 and the liquid inlet pipe I can be shortened. Furthermore, compared to different straight pipes, the overall length of the Z-shaped pipe V is shorter, thereby making the layout of the brine system 3 more compact, which in turn facilitates a more compact unit layout.

[0062] Based on the above examples, please refer to Figure 3 A vertical bypass pipe IV is provided between the connecting pipe II and the first pipe section of the liquid outlet pipe III.

[0063] It is understandable that if the brine flow rate at the hot end of heat exchanger 23 is too high, the amount of brine exchanged with the cold end of heat exchanger 23 increases, and the brine temperature discharged from heat exchanger 23 is too low, failing to meet the required brine temperature. Adding a bypass pipe IV between connecting pipe II and liquid outlet pipe III allows the high-temperature brine that has not been cooled by heat exchange in heat exchanger 23 to mix with the low-temperature brine discharged from heat exchanger 23, thereby meeting the required brine temperature. Furthermore, bypass pipe IV is vertically positioned between connecting pipe II and the first section of liquid outlet pipe III. This not only improves the mixing efficiency of the high-temperature and low-temperature brine, but also reduces the length of bypass pipe IV, saving manufacturing costs.

[0064] Preferably, a heating device is provided in connecting pipe II to heat the coolant flowing through connecting pipe II. Therefore, if the energy storage cabinet needs to raise the ambient temperature, the heating device is activated, and the low-temperature coolant returning from the energy storage cabinet is pumped into connecting pipe II via pump 31. The heating device heats the low-temperature coolant to a suitable temperature, and the high-temperature coolant is then discharged into the energy storage cabinet through bypass pipe IV and liquid outlet pipe III, thereby raising the ambient temperature of the energy storage cabinet.

[0065] Based on the above examples, please refer to Figure 3 The coolant system 3 also includes a liquid replenishing tank 33 located above the liquid inlet pipe 1, and the liquid replenishing tank 33 is connected to the liquid inlet pipe 1.

[0066] Specifically, the replenishing tank 33 stores brine. Its outlet is connected to the interior of the liquid inlet pipe 1 via a pipeline. When the brine system 3 is low on brine, the brine flows into the liquid inlet pipe 1 to replenish the brine system 3. This not only prevents the pump 31 from idling and protects it from damage, but also ensures the brine system 3 continues to operate, thus continuously cooling the energy storage cabinet. Furthermore, the placement of the replenishing tank 33 above the liquid inlet pipe 1 allows the brine to flow into the liquid inlet pipe 1 by gravity, reducing energy consumption.

[0067] For further information, please refer to Figure 3 The liquid replenishment tank 33 is provided with an inlet connected to the pressure relief port of the safety valve 35 provided on the liquid outlet pipe III. Thus, when the pressure of the brine system 3 exceeds the preset pressure of the safety valve 35, the safety valve 35 opens, and the brine in the liquid outlet pipe III is discharged directly into the liquid replenishment tank 33. This not only reduces the pressure of the brine system 3, thereby stabilizing the pressure of the brine system 3, but also recycles the brine, saving costs.

[0068] Based on any of the above examples, please refer to Figure 3 A filter 32 is provided on the liquid inlet pipe 1 to filter the coolant returning from the energy storage cabinet to prevent the coolant from carrying impurities and damaging the components in the coolant system 3.

[0069] It is understood that the pump 31 generates gas during operation, which can hinder the flow of liquid. Therefore, based on any of the above embodiments, an exhaust valve 34 is provided on the pump 31. The exhaust valve 34 can effectively exhaust the air generated by the pump 31, so that the pump 31 always maintains a good working condition, thereby ensuring the smooth operation of the coolant system 3.

[0070] Based on any of the above examples, please refer to Figure 3 A liquid injection port 37 may also be provided on the liquid inlet pipe 1. Thus, when repairing the brine system 3, liquid may be injected into the brine system 3 through the liquid injection port 37. The liquid, under the pumping action of the pump 31, flushes and drains the brine system 3 of the residual brine, thereby facilitating the maintenance of the brine system 3.

[0071] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above is a detailed introduction to a chiller for energy storage cabinets provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that for ordinary technicians in this technical field, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A chiller used in an energy storage cabinet, characterized in that: include: Frame (1); A fluorine system (2) comprising a compressor (21), a condenser (22) and a heat exchanger (23), wherein the condenser (22) is arranged obliquely in the frame (1), and the frame (1) is divided into an upper frame (11) and a lower frame (12), a sealing plate is provided on the outer side of the upper frame (11) and forms a closed air cavity with the condenser (22), and the lower frame (12) is provided with the compressor (21) and the heat exchanger (23), and the cold ends of the compressor (21), the condenser (22) and the heat exchanger (23) are connected in sequence to form a refrigerant circulation loop; A fan (4) is disposed in the sealing plate of the upper frame (11) and is in communication with the closed air cavity; A coolant system (3) is provided on the lower frame (12) and is used to connect to the hot end of the heat exchanger (23) and provide coolant to the energy storage cabinet.

2. The chiller used in the energy storage cabinet according to claim 1, characterized in that: It also includes an electric control unit, which is arranged in the sealing plate of the upper frame (11) and is electrically connected to the fluorine system (2), the coolant system (3) and the fan (4).

3. The chiller used in the energy storage cabinet according to claim 2, characterized in that: The sealing plate comprises a top sealing plate (111), a side sealing plate (112) and two triangular sealing plates (113); the top sealing plate (111) is arranged at the top end of the frame (1); one triangular sealing plate (113), the side sealing plate (112) and another triangular sealing plate (113) are sequentially arranged around the three circumferences of the frame (1); the top sealing plate (111), the side sealing plate (112), the two triangular sealing plates (113) and the condenser (22) form the closed air cavity; the fan (4) is arranged on the top sealing plate (111), and the electronic control unit is arranged on the side sealing plate (112).

4. The chiller used in the energy storage cabinet according to claim 3, characterized in that: One side edge of the side sealing plate (112) is hinged to the side beam of the upper frame (11).

5. The chiller used in the energy storage cabinet according to claim 4, characterized in that: An electric control box (5) is provided on the side sealing plate (112), and the electric control box (5) comprises a box body for accommodating the electric control unit and a cover plate rotatably connected to the box body.

6. The chiller used in the energy storage cabinet according to claim 1, characterized in that: A bottom sealing plate (122) is provided at the bottom end of the frame (1), and the compressor (21), the heat exchanger (23) and the coolant system (3) are all fixed on the bottom sealing plate (122).

7. The chiller used in an energy storage cabinet according to any one of claims 1 to 6, characterized in that: The coolant system (3) includes a pump (31), the liquid inlet end of the pump (31) is connected to the energy storage cabinet via a liquid inlet pipe (I), the liquid outlet end of the pump (31) is connected to the hot end inlet of the heat exchanger (23) via a connecting pipe (II), and the hot end outlet of the heat exchanger (23) is connected to the energy storage cabinet via a liquid outlet pipe (III), so as to form a coolant circulation loop; The vertical heat exchanger (23) is located below the condenser (22) at a preset height interval and is arranged side by side with the pump (31) at a preset horizontal interval, and the connecting pipe (II) is horizontally located above the liquid outlet pipe (III) and the liquid inlet pipe (I).

8. The chiller used in the energy storage cabinet according to claim 7, characterized in that: The liquid outlet pipe (III) is an L-shaped structure. The first pipe section of the liquid outlet pipe (III) is parallel to the connecting pipe (II) and connected to the hot end outlet of the heat exchanger (23). The second pipe section of the liquid outlet pipe (III) is close to and parallel to the liquid inlet pipe (I).

9. The chiller used in the energy storage cabinet according to claim 8, characterized in that: A vertical bypass pipe (IV) is provided between the connecting pipe (II) and the first pipe section of the liquid outlet pipe (III).

10. The chiller used in the energy storage cabinet according to claim 7, characterized in that: The refrigerant system (3) further comprises a liquid replenishing tank (33) located above the liquid inlet pipe (I), the liquid replenishing tank (33) being in communication with the liquid inlet pipe (I), and the liquid replenishing tank (33) being provided with an access port in communication with a pressure relief port of a safety valve (35) provided on the liquid outlet pipe (III).

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