Water chilling unit and heat management system

Abstract

The utility model provides a water chilling unit and a heat management system. The water chilling unit comprises a frame, and the frame comprises an upper-layer frame and a lower-layer frame; the upper-layer frame is provided with a top sealing plate and a side sealing plate; the lower-layer frame is provided with a bottom sealing plate; the fan is mounted on the top sealing plate; the heat exchange system assembly comprises a first heat exchanger, a water pump, a second heat exchanger and an expansion tank; the first heat exchanger is arranged in the upper-layer frame; the water pump, the second heat exchanger and the expansion tank are arranged in the lower-layer frame; the frame is provided with a maintenance side face, the upper-layer frame is correspondingly provided with an upper-layer maintenance side face, the lower-layer frame is correspondingly provided with a lower-layer maintenance side face, the water pump, the expansion tank and the second heat exchanger are sequentially arranged from the side close to the lower-layer maintenance side face to the side away from the lower-layer maintenance side face, and the expansion tank is arranged between the water pump and the second heat exchanger. The water chilling unit and the heat management system are compact in structure, simple in pipeline connecting structure and convenient to maintain.

Description

Technical Field

[0001] The present application relates to the technical field of temperature control equipment, and in particular to a chiller and a thermal management system. Background Art

[0002] The energy storage cabinet is the basic unit of the energy storage equipment, and its performance stability and reliability are directly related to the operation effect of the entire energy storage system. 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 state.

[0003] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: At present, there are many chillers on the market that are suitable for energy storage cabinets of different models and specifications, but most of these chillers have problems such as large size, complex pipe connections, inconvenient maintenance of internal components, and high manufacturing costs, which result in poor user experience. Summary of the invention

[0004] Based on this, the present application provides a chiller and a thermal management system to improve at least one of the problems existing in the prior art, such as large size of the chiller, complex pipe connections, and inconvenient component maintenance.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] On the one hand, an embodiment of the present application provides a chiller, comprising: a frame, the frame comprising an upper frame and a lower frame; the upper frame is provided with a top sealing plate and a side sealing plate; the lower frame is provided with a bottom sealing plate;

[0007] A fan is installed on the top cover plate;

[0008] A heat exchange system component, the heat exchange system component comprising a first heat exchanger, a water pump, a second heat exchanger and an expansion tank; the first heat exchanger is arranged in the upper frame, and the water pump, the second heat exchanger and the expansion tank are all arranged in the lower frame;

[0009] The frame is provided with a maintenance side, the upper frame is correspondingly provided with an upper maintenance side, and the lower frame is correspondingly provided with a lower maintenance side, the water pump, the expansion tank and the second heat exchanger are arranged in sequence from a side close to the lower maintenance side to a side away from the lower maintenance side, wherein the expansion tank is arranged between the water pump and the second heat exchanger.

[0010] In one embodiment, the chiller also includes a make-up water tank arranged in the lower frame, the water pump, the expansion tank and the second heat exchanger are arranged in sequence from a side close to the lower maintenance side to a side away from the lower maintenance side to form a first row of components, and the make-up water tank is arranged in parallel with the first row of components to form a second row of components; the water inlet of the water pump is arranged close to the make-up water tank, and the water outlet of the water pump is connected to the water inlet of the first heat exchanger; the expansion tank and the make-up water tank are respectively connected to the water inlet of the water pump through pipelines.

[0011] In one of the embodiments, the expansion tank is horizontally arranged between the water pump and the second heat exchanger, and the inlet and outlet of the expansion tank are arranged close to the water outlet of the water pump.

[0012] In one of the embodiments, the chiller further comprises an electrical control component and a channel air inlet arranged on the lower maintenance side, wherein the channel air inlet is arranged close to the bottom sealing plate; a removable ventilation mesh is provided at the channel air inlet.

[0013] In one embodiment, the chiller also includes a vertical pipe and a heater, the vertical pipe is connected to the water outlet of the water pump, a refrigerant inlet is provided at the upper portion of the second heat exchanger, and both ends of the heater are respectively connected to the vertical pipe and the refrigerant inlet.

[0014] In one of the embodiments, an exhaust valve is provided at the top of the vertical pipe.

[0015] In one embodiment, the water inlet of the water pump is used to connect to the water inlet pipe, the lower part of the second heat exchanger is provided with a refrigerant outlet, the refrigerant outlet is used to connect to the water outlet pipe, and the expansion tank lies horizontally between the heater and the water outlet pipe.

[0016] In one of the embodiments, the chiller further includes a bypass pipe, and two ends of the bypass pipe are respectively connected to the vertical pipe and the water outlet pipe.

[0017] In one embodiment, the second column assembly further includes a compressor, which is disposed close to the second heat exchanger and is respectively connected in series with the refrigerant channel of the second heat exchanger and the first heat exchanger.

[0018] On the other hand, an embodiment of the present application provides a thermal management system, including the above-mentioned chiller.

[0019] The present application has at least the following beneficial effects: The chiller provided in the embodiment of the present application has a frame with a maintenance side, which is convenient for maintaining the components of the heat exchange system. The water pump is arranged close to the lower maintenance side, which is very convenient for maintenance. The expansion tank is arranged between the second heat exchanger and the water pump, which makes full use of the gap in the pipe connection, makes the overall structure more compact, and effectively reduces the overall volume of the chiller. The chiller in the embodiment of the present application has a reasonable layout of components in the cabinet, and each component makes full use of the space. At the same time, the reasonable layout can also reduce wind resistance. The thermal management system provided in the embodiment of the present application includes the above-mentioned chiller, and therefore also has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the internal structure of a chiller from one perspective according to an embodiment of the present application.

[0021] Figure 2 This is a schematic diagram of the internal structure of the chiller from another perspective of an embodiment of the present application.

[0022] Figure 3 This is a schematic diagram of the structure of some components of the chiller of an embodiment of the present application.

[0023] The meanings of the symbols in the accompanying drawings are as follows:

[0024] 1. Frame; 11. Channel air inlet; 12. Bottom cover; 13. Upper frame; 131. Top cover; 132. Side cover; 133. Upper maintenance side; 14. Lower maintenance side; 15. Ventilation mesh; 2. First heat exchanger; 21. Fan; 3. Second heat exchanger; 4. Electronic control components; 5. Expansion tank; 6. Water pump; 61. Vertical pipe; 611. Exhaust valve; 62. Filter; 63. Bypass pipe; 64. Heater; 7. Water inlet pipe; 71. Liquid filling port; 8. Water supply tank; 81. Water supply pump; 9. Compressor; 10. Water outlet pipe; 101. Safety valve. DETAILED DESCRIPTION

[0025] The technical solution of the present application is further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the implementation of this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] The thermal management system of the embodiment of the present application includes a chiller and a heat exchange module (not shown), and the heat exchange module is used to exchange heat with the battery pack of the energy storage cabinet to control the temperature of the battery pack. The thermal management system may also include other components, such as a four-way reversing valve at the inlet and outlet of the compressor 9 of the refrigeration system, etc., which are not listed here one by one.

[0030] See also Figure 1 and Figure 2 The chiller of this embodiment includes a frame 1, a fan 21 and a heat exchange system component.

[0031] The frame 1 includes an upper frame 13 and a lower frame. The upper frame 13 is provided with a top sealing plate 131 and a side sealing plate 132, and the lower frame is provided with a bottom sealing plate 12, wherein there are multiple side sealing plates 132, and the top sealing plate 131 and the side sealing plates 132 are used to close the upper side, front side, rear side, left side and right side of the upper frame 13.

[0032] The fan 21 is installed on the top sealing plate 131, and the heat exchange system components include the first heat exchanger 2, the water pump 6, the second heat exchanger 3 and the expansion tank 5. The first heat exchanger 2 is arranged in the upper frame 13, and the water pump 6, the second heat exchanger 3 and the expansion tank 5 are all arranged in the lower frame; wherein, there can be multiple fans 21, and the top sealing plate 131 and the side sealing plate 132 seal the upper frame 13 to form an air cavity, and the fan 21 corresponds to the heat exchange area of ​​the first heat exchanger 2, so that the external air enters the first heat exchanger 2 and is drawn out from the fan 21.

[0033] The frame 1 is provided with a maintenance side, the upper frame 13 is correspondingly provided with an upper maintenance side 133, and the first heat exchanger 2 is arranged close to the upper maintenance side 133; the lower frame is correspondingly provided with a lower maintenance side 14, and the water pump 6, the expansion tank 5 and the second heat exchanger 3 are arranged in sequence from the side close to the lower maintenance side 14 to the side away from the lower maintenance side 14, wherein the expansion tank 5 is arranged between the water pump 6 and the second heat exchanger 3; wherein, the chiller is placed in the energy storage cabinet, and the maintenance side faces the outside of the energy storage cabinet, so that the internal components of the chiller can be conveniently maintained through the maintenance side.

[0034] Specifically, in this embodiment, the chiller may further include an electronic control component 4, and the heat exchange system component may further include a water supply tank 8, a compressor 9, a heater 64, and the like.

[0035] The second heat exchanger 3 in this embodiment is a plate heat exchanger, including a coolant channel (not shown) and a refrigerant channel (not shown), and the refrigerant of the refrigeration system and the coolant of the water system can exchange heat at the second heat exchanger 3. The water pump 6 and the coolant channel of the second heat exchanger 3 are connected in series to form a water system, and the refrigerant channel of the second heat exchanger 3 and the compressor 9 are connected in series to form a refrigeration system.

[0036] like Figure 1 As shown, a channel air inlet 11 is provided at the lower part of the lower maintenance side 14 of the frame 1, and the channel air inlet 11 is arranged near the bottom sealing plate 12. The water pump 6, the expansion tank 5 and the second heat exchanger 3 are arranged in sequence in the lower frame from the side close to the channel air inlet 11 to the side away from the channel air inlet 11, forming a first row of components, wherein the expansion tank 5 is arranged horizontally between the water pump 6 and the second heat exchanger 3; the water supply tank 8 and the compressor 9 are arranged in parallel with the first row of components in the lower frame, forming a second row of components; the water inlet of the water pump 6 is arranged near the water supply tank 8, the water outlet of the expansion tank 5 is arranged on the side close to the water supply tank 8, and the water outlet of the water pump 6 is connected to the water inlet of the second heat exchanger 3; the expansion tank 5 and the water supply tank 8 are connected to the water inlet of the water pump 6 through pipelines respectively.

[0037] Specifically, Figure 1 and Figure 2 As shown, in this embodiment, the frame 1 is in a rectangular shape, and the frame 1 includes a plurality of crossbeams, and the first heat exchanger 2 is fixed on the crossbeams of the upper frame 13. A detachable ventilation mesh plate 15 can also be provided at the channel air inlet 11, and the ventilation mesh plate 15 has the function of air intake. At the same time, in order to enhance the effect of the ventilation mesh plate 15 in blocking foreign matter, a filter cotton or a filter net or other components can also be provided inside the ventilation mesh plate 15, which can effectively prevent foreign matter from entering the unit and causing the unit to malfunction or damage.

[0038] like Figure 1As shown, the first heat exchanger 2 in this embodiment is a coil heat exchanger. In other embodiments, the type of heat exchanger can also be selected according to actual needs, and the specific type is not limited. Above the first heat exchanger 2, the top of the frame 1, that is, the top sealing plate 131 is provided with a fan 21. The chiller takes in air from the ventilation mesh plate 15 and exhausts air from the fan 21. The first heat exchanger 2 is arranged in the upper part of the chiller, and takes in air from the ventilation mesh plate 15 at the bottom of the unit. The top fan 21 can be connected to the energy storage cabinet duct for exhaust. An air cavity is formed between the top sealing plate 131, the side sealing plate 132, the first heat exchanger 2 and the fan 21. The top sealing plate 131 and the side sealing plate 132 can prevent air leakage in the air cavity and improve the heat exchange efficiency of the first heat exchanger 2. The setting height of the first heat exchanger 2 is a reasonable position for the fan air inlet 21, which can effectively prevent the fan 21 from having a disordered air intake streamline and affecting the performance of the fan.

[0039] An electric control assembly 4 is arranged below the first heat exchanger 2. The electric control assembly 4 includes an electrical assembly for controlling the chiller. The electric control assembly 4 is arranged near the lower maintenance side 14 and is located above the channel air inlet 11. The electric control assembly 4 is located in the middle of the frame 1, and the height of the position is at a comfortable position for the operator to operate, so that the operator can perform daily maintenance and upkeep of the electric control assembly 4.

[0040] like Figure 2 and Figure 3As shown, components such as the water pump 6, the second heat exchanger 3, the water supply tank 8, the expansion tank 5, the compressor 9 and the heater 64 are all arranged in the inner lower part of the lower frame, and the water pump 6 and the compressor 9 are respectively fixed on the bottom cover plate 12. By removing the ventilation mesh plate 15, it is convenient to maintain these components at the channel air inlet 11. The water pump 6 is a component that often requires maintenance, and its position is set closest to the channel air inlet 11 for easy maintenance. The water pump 6 is provided with a water inlet and a water outlet, and the water supply tank 8 is arranged in parallel with the first row of components, that is, the water supply tank 8 is located on one side of the water pump 6, and the water inlet of the water pump 6 is arranged at one end of the water pump 6 close to the water supply tank 8, which is convenient for pipeline connection with the water supply tank 8. The water inlet of the water pump 6 is connected to the water inlet pipe 7 through a filter 62, and the filter 62 can filter impurities in the coolant. There is a height difference between the water supply tank 8 and the water inlet pipe 7. The water supply tank 8 is located above the water inlet pipe 7. A water supply pump 81 is provided at the bottom of the water supply tank 8. The water supply pump 81 is connected to the water inlet pipe 7 through a pipeline. The water supply tank 8 replenishes liquid to the water system (coolant system) through the water supply pump 81. The water inlet pipe 7 is also provided with a liquid injection port 71. A water outlet is provided at the top of the water pump 6. The water outlet is arranged close to the water inlet. A vertical pipe 61 is connected to the water outlet of the water pump 6. The upper part of the vertical pipe 61 is connected to the coolant inlet of the coolant channel of the second heat exchanger 3 through the heater 64. The coolant inlet of the second heat exchanger 3 is arranged at the upper part of the second heat exchanger 3. The vertical pipe 61 is arranged in parallel with the second heat exchanger 3, and the heater 64 is arranged vertically with the vertical pipe 61 and the second heat exchanger 3 respectively. The two ends of the heater 64 are connected to the vertical pipe 61 and the coolant inlet respectively. Using a heater 64 to replace part of the pipeline to connect the vertical pipeline 61 and the second heat exchanger 3 can reduce the use of pipelines, thereby reducing costs, and at the same time make the entire connection structure more compact, and the heater 64 is located in a relatively upper position to facilitate wiring and maintenance. An exhaust valve 611 can also be set at the top of the vertical pipeline 61. In this embodiment, an automatic exhaust valve 611 is used to automatically discharge the gas in the water system. The refrigerant outlet of the second heat exchanger 3 is arranged at the lower part of the second heat exchanger 3. The refrigerant outlet is connected to a water outlet pipe 10. A safety valve 101 can be set on the water outlet pipe 10 to relieve pressure and ensure the safety of the water system. An access port can also be set on the water supply tank 8. The outlet of the safety valve 101 is connected to the access port through a pipeline, so that the refrigerant flowing out of the safety valve 101 can directly enter the water supply tank 8 to enter the water system again, avoiding the refrigerant flowing out directly to the energy storage cabinet and causing pollution, while also realizing the recycling of the refrigerant and saving costs. The water inlet pipe 7 and the water outlet pipe 10 are respectively connected to the heat exchange module.

[0041] In some embodiments, the chiller may further include a bypass pipe 63, the two ends of which are connected to the vertical pipe 61 and the outlet pipe 10, respectively, and the diameter of the bypass pipe 63 is smaller than the diameters of the vertical pipe 61 and the outlet pipe 10. The bypass pipe 63 can reduce the flow of the coolant entering the second heat exchanger 3, thereby better balancing the distribution of the water flow. The expansion tank 5 lies between the second heat exchanger 3 and the water pump 6, and is located between the heater 64 and the outlet pipe 10 in the vertical direction, making full use of the space connected between the second heat exchanger 3 and the water pump 6, making the overall structure more compact, and the water pump 6 is provided with a water outlet at one end near the water supply tank 8, and the water outlet is connected to the water inlet pipe 7 through a pipeline. The position of the water pump 6 is reasonable, which will not affect the pipeline connection between the components, and is convenient for air replenishment from the front (the side with the channel air inlet 11).

[0042] The pipe connection of the entire water system of this embodiment is very simple, and the pipe is as short as possible, which makes maintenance more convenient and effectively reduces costs. The compressor 9 is arranged in the same row as the water supply tank 8. The compressor 9 is fixed on the bottom sealing plate 12, located on the side of the water supply tank 8 away from the channel air inlet 11, and is arranged close to the second heat exchanger 3, so as to facilitate connection with the second heat exchanger 3 and reduce the length of the pipe connection. The inlet and outlet of the compressor 9 are respectively connected to the second heat exchanger 3 and the first heat exchanger 2.

[0043] To enhance the accuracy of temperature control, the chiller of this embodiment may further include a temperature sensor and a pressure sensor. For example, a temperature sensor and a pressure sensor may be respectively arranged at the water outlet pipe 10 and the water inlet pipe 7, and a temperature sensor and a pressure sensor may also be respectively arranged near the inlet and outlet of the compressor 9.

[0044] The working principle of the chiller of the embodiment of the present application is as follows: the refrigerant of the water system exchanges heat with the load equipment at the heat exchange module and then flows out of the heat exchange module, enters through the water inlet pipe 7, is filtered by the filter 62, and is pressurized by the water pump 6 before entering the vertical pipe 61. The gas in the pipe is discharged by the exhaust valve 61. At this time, a part of the refrigerant passes through the heater 64 and enters the refrigerant channel of the second heat exchanger 3 from the refrigerant inlet. After exchanging heat with the refrigerant of the refrigeration system, it flows back to the heat exchange module from the refrigerant outlet through the water outlet pipe 10, completing a cycle; the other part of the refrigerant enters the water outlet pipe 10 through the bypass pipe 63 and flows back to the heat exchange module, completing a cycle; wherein, a switch valve can be set at the bypass pipe 63, which can be opened or closed according to usage requirements so that the refrigerant enters the water outlet pipe 10 through or without passing through the bypass pipe 63. After exchanging heat with the secondary coolant in the second heat exchanger 3, the refrigerant of the refrigeration system flows back to the compressor 9, passes through the first heat exchanger 2, the filter 62, the expansion valve, and enters the refrigerant channel of the second heat exchanger 3, completing a cycle.

[0045] The chiller of this embodiment can be installed in a specific frame of the energy storage cabinet. The structural space is reasonably utilized, the unit has high safety and reliability, key components are easy to maintain, and the connecting pipe and fittings have a simple structure, which reduces manufacturing and maintenance costs.

[0046] The chiller of this embodiment can be divided into three major areas. The front area is composed of side cover plates facing the user end, electronic control components, and ventilation mesh plates; the main components of the chiller are placed in the middle area, and are reasonably arranged up and down; there is no equipment placed in the rear area, and the front area is reasonably utilized to reduce the use of fixings, and the components are fixed with beams and bottom cover plates, which further improves the compactness and maintainability of the unit.

[0047] The components in the middle area of ​​this embodiment are arranged reasonably, the overall structure of the water system is compact, the length of the pipe connection is short, a heater is used to replace part of the pipe, a bypass pipe is used to reduce the impact of large flow on system stability, corresponding sensors and safety valves are equipped, and the expansion tank and water supply tank are reasonably arranged, and the water supply distance is shorter. The overall water system makes full use of space, the length of the pipe is extremely shortened, and the manufacturing and maintenance costs are effectively reduced.

[0048] The chiller of this embodiment has a simple layout and is easy to assemble. The internal components of the unit are reasonably arranged, occupying a small space, with low wind resistance, which fully shortens the length of the pipes, effectively reduces costs, and facilitates later maintenance. The chiller of this embodiment has a reasonable layout, taking into account the role of each component, giving full play to the performance of each component, effectively reducing costs, and ensuring efficient and stable operation of the entire system.

[0049] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A chiller, characterized in that: include: A frame, the frame comprising an upper frame and a lower frame; the upper frame is provided with a top sealing plate and a side sealing plate; the lower frame is provided with a bottom sealing plate; A fan is installed on the top cover plate; A heat exchange system component, the heat exchange system component comprising a first heat exchanger, a water pump, a second heat exchanger and an expansion tank; the first heat exchanger is arranged in the upper frame, and the water pump, the second heat exchanger and the expansion tank are all arranged in the lower frame; The frame is provided with a maintenance side, the upper frame is correspondingly provided with an upper maintenance side, and the lower frame is correspondingly provided with a lower maintenance side, the water pump, the expansion tank and the second heat exchanger are arranged in sequence from a side close to the lower maintenance side to a side away from the lower maintenance side, wherein the expansion tank is arranged between the water pump and the second heat exchanger.

2. The water chiller according to claim 1, characterized in that: It also includes a water replenishment tank arranged in the lower frame, the water pump, the expansion tank and the second heat exchanger are arranged in sequence from the side close to the lower maintenance side to the side away from the lower maintenance side to form a first row of components, and the water replenishment tank is arranged in parallel with the first row of components to form a second row of components; the water inlet of the water pump is arranged close to the water replenishment tank, and the water outlet of the water pump is connected to the water inlet of the first heat exchanger; the expansion tank and the water replenishment tank are connected to the water inlet of the water pump through pipelines respectively.

3. The chiller according to claim 2, characterized in that: The expansion tank is horizontally arranged between the water pump and the second heat exchanger, and the inlet and outlet of the expansion tank are arranged close to the water outlet of the water pump.

4. The water chiller according to claim 1, characterized in that: It also includes an electric control component and a channel air inlet arranged on the lower maintenance side, and the channel air inlet is arranged close to the bottom sealing plate; a detachable ventilation mesh plate is provided at the channel air inlet.

5. The water chiller according to claim 1, characterized in that: It also includes a vertical pipe and a heater, wherein the vertical pipe is connected to the water outlet of the water pump, a coolant inlet is provided at the upper part of the second heat exchanger, and both ends of the heater are respectively connected to the vertical pipe and the coolant inlet.

6. The water chiller according to claim 5, characterized in that: An exhaust valve is provided on the top of the vertical pipeline.

7. The water chiller according to claim 5, characterized in that: The water inlet of the water pump is used to connect to the water inlet pipe, the lower part of the second heat exchanger is provided with a refrigerant outlet, the refrigerant outlet is used to connect to the water outlet pipe, and the expansion tank lies horizontally between the heater and the water outlet pipe.

8. The water chiller according to claim 7, characterized in that: It also includes a bypass pipe, and both ends of the bypass pipe are respectively connected to the vertical pipeline and the water outlet pipe.

9. The water chiller according to claim 2, characterized in that: The second row of components also includes a compressor, which is disposed close to the second heat exchanger and is respectively connected in series with the refrigerant channel of the second heat exchanger and the first heat exchanger.

10. A thermal management system, characterized in that: Comprising a chiller as described in any one of claims 1 to 9.

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