Heat exchange device and refrigeration system

Abstract

The present disclosure provides a heat exchange device and a refrigeration system. The heat exchange device comprises a shell, which is cylindrical; a first layer plate extending along the axial direction of the shell in the shell, the first layer plate comprising a first liquid passage; a second layer plate extending along the axial direction in the shell and oppositely and spacedly arranged with the first layer plate, the second layer plate comprising a second liquid passage; a condenser located in a first space between the first layer plate and the shell; an evaporator located in a second space between the second layer plate and the shell; and a throttling assembly located in a third space between the first layer plate, the second layer plate and the shell, the throttling assembly being in communication with the first liquid passage and the second liquid passage; wherein the refrigerant flowing into the shell flows to the first liquid passage through the condenser, and then flows to the evaporator through the throttling assembly and the second liquid passage in sequence. The heat exchange device integrates the condenser, the evaporator and the throttling assembly in the same shell, which is conducive to reducing the number of external connecting pipelines and interfaces.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration equipment technology, and in particular to a heat exchange device and a refrigeration system. Background Technology

[0002] In large and medium-sized refrigeration systems, the functional units (such as evaporators, condensers, and compressors) are mostly constructed in a separate manner, requiring each unit to be independently packaged and connected via external piping. However, this separate construction results in a higher overall weight and space occupancy rate after assembly, and increases material and processing costs. Furthermore, the large number of connecting pipes between functional units increases the risk of refrigerant leaks due to the numerous pipe joints. Additionally, during system operation, the piping is susceptible to vibration coupling effects from compressor pulsations and refrigerant flow impacts, exacerbating stress concentration and fatigue damage risks at pipe joints, ultimately leading to decreased system reliability and increased maintenance costs. Utility Model Content

[0003] The purpose of this disclosure is to provide a heat exchange device and a refrigeration system that reduces the footprint of the refrigeration system and the connecting pipes.

[0004] The first aspect of this disclosure provides a heat exchange device, comprising:

[0005] The housing is cylindrical;

[0006] A first layer plate extends axially within the housing, and the first layer plate includes a first liquid outlet.

[0007] A second layer plate extends axially within the housing and is disposed opposite and spaced apart from the first layer plate, the second layer plate including a second liquid outlet;

[0008] A condenser is located in a first space between the first layer plate and the housing;

[0009] The evaporator is located in the second space between the second layer plate and the housing; and

[0010] A throttling component is located in a third space between the first layer plate, the second layer plate and the housing, and the throttling component is in communication with the first liquid outlet and the second liquid outlet;

[0011] The refrigerant flowing into the housing passes through the condenser to the first liquid outlet, and then sequentially passes through the throttling assembly and the second liquid outlet to the evaporator.

[0012] In some embodiments of the heat exchange device, the first plate and the second plate are arranged at intervals in the vertical direction.

[0013] In some embodiments of the heat exchange device, the throttling assembly includes a first throttling element and a second throttling element spaced apart along the axial direction, and the heat exchange device further includes at least one of the following components located within the third space:

[0014] A first vapor-liquid separation section is connected along the axial direction between the first throttling element and the second throttling element;

[0015] The second vapor-liquid separator is located on one side of the throttling assembly along the axial direction, and is located between the throttling assembly and the evaporator along the refrigerant flow path;

[0016] The subcooling component, arranged horizontally radially alongside the throttling component, is configured to subcool the refrigerant flowing out of the first liquid outlet; and

[0017] The superheating component, arranged side-by-side with the throttling component in the horizontal radial direction, is configured to superheat the gaseous refrigerant flowing out of the throttling component.

[0018] In some embodiments of the heat exchange device, the throttling assembly includes a first throttling element and a second throttling element, the inlet of the first throttling element is connected to the first liquid outlet, the second throttling element is located downstream of the first throttling element along the axial direction, and the outlet of the second throttling element is connected to the refrigerant inlet of the evaporator;

[0019] The heat exchange device further includes a first vapor-liquid separation section, which is connected along the axial direction between the outlet of the first throttling element and the inlet of the second throttling element, and includes a first gas outlet and a first liquid outlet. The first gas outlet is connected to the outside of the housing, and the first liquid outlet is connected to the inlet of the second throttling element.

[0020] In some embodiments of the heat exchange apparatus, the following further includes:

[0021] A first mounting plate is connected between the first layer plate and the second layer plate, and the first mounting plate is configured to fix the first throttling element; and

[0022] A second mounting plate is connected between the first layer plate and the second layer plate, and is disposed opposite to and spaced apart from the first mounting plate along the axial direction. The second mounting plate is configured to fix the second throttling element.

[0023] The first separation space of the first vapor-liquid separation section is formed between the first mounting plate, the second mounting plate, the first layer plate, the second layer plate and the housing.

[0024] In some embodiments of the heat exchange device, the first vapor-liquid separation unit further includes:

[0025] A first vapor-liquid separator is disposed vertically and spaced apart from the first and second mounting plates. The first vapor-liquid separator is connected axially between the first and second mounting plates and is located above the outlet of the first throttling element; and / or

[0026] A first air distribution plate is located along the axial direction between the first mounting plate and the second mounting plate, and is disposed opposite to and spaced apart from the first mounting plate and the second mounting plate. The first air distribution plate is close to the outlet of the first throttling element and includes a plurality of first through holes; and / or

[0027] An anti-impact component is located along the axial direction between the first mounting plate and the second mounting plate, and is disposed opposite to and spaced apart from the first mounting plate and the second mounting plate. The anti-impact component is close to the inlet of the second throttling component and includes a third liquid outlet. The third liquid outlet is located at the bottom of the anti-impact component and communicates with the outlet of the first throttling component and the inlet of the second throttling component.

[0028] In some embodiments of the heat exchange device, the third liquid outlet and the inlet of the second throttling element are staggered relative to each other along the horizontal radial direction of the housing.

[0029] In some embodiments of the heat exchange device, a third mounting plate is also included, which is connected between the first layer plate and the second layer plate, and is disposed opposite to and spaced apart from the first mounting plate on the side of the first mounting plate away from the first vapor-liquid separation section along the axial direction. A liquid storage space is formed between the first mounting plate, the third mounting plate, the first layer plate, the second layer plate and the shell, and the liquid storage space is connected to the inlet of the first throttling element and the first liquid outlet.

[0030] In some embodiments of the heat exchange device, the heat exchange device further includes a second vapor-liquid separation section located within the third space and along the axial direction on the side of the second throttling element away from the first vapor-liquid separation section. The second vapor-liquid separation section includes a second gas outlet and a second liquid outlet. The second gas outlet is connected to the refrigerant outlet of the evaporator, and the second liquid outlet is connected to the refrigerant inlet of the evaporator.

[0031] In some embodiments of the heat exchange apparatus, the following further includes:

[0032] A second mounting plate, connected between the first layer plate and the second layer plate, is configured to fix the second throttling element; and

[0033] The fourth mounting plate is connected between the first layer plate and the second layer plate, and is positioned opposite to and spaced apart from the second mounting plate on the side of the second mounting plate that is away from the first vapor-liquid separator along the axial direction.

[0034] The second mounting plate, the fourth mounting plate, the first layer plate, the second layer plate, and the housing form a second separation space for the second vapor-liquid separation section.

[0035] In some embodiments of the heat exchange apparatus, the second vapor-liquid separator includes:

[0036] A second vapor-liquid separator is disposed vertically and spaced apart from the first and second layers. The second vapor-liquid separator is connected axially between the second and fourth mounting plates and is located above the outlet of the second throttling element; and / or

[0037] The second air distribution plate is located between the second mounting plate and the fourth mounting plate along the axial direction, and is disposed opposite to and spaced apart from the second mounting plate and the fourth mounting plate. The second air distribution plate is close to the outlet of the second throttling element and includes a plurality of second through holes.

[0038] In some embodiments of the heat exchange apparatus, a subcooling component is further included, the subcooling component comprising:

[0039] A subcooling box, extending along the axial direction, includes a first liquid inlet and a third liquid outlet located at opposite ends of the subcooling box. The first liquid inlet communicates with the first liquid outlet, and the third liquid outlet communicates with the inlet of the throttling assembly.

[0040] A subcooling heat exchange tube, extending axially within the subcooling box, is configured to allow cooling water to flow through it for subcooling heat exchange with the liquid refrigerant entering the subcooling box.

[0041] In some embodiments of the heat exchange device, a partition is further included, which is connected between the first plate and the second plate and extends along the axial direction. The partition includes a fourth liquid outlet, which communicates with the third liquid outlet and the inlet of the throttling component. The partition is configured to divide the third space into two subspaces, in which the throttling component and the subcooling component are located respectively.

[0042] In some embodiments of the heat exchange device, the fourth liquid outlet and the third liquid outlet are arranged opposite to each other and spaced apart;

[0043] The heat exchange device includes a first connecting pipe, which connects the fourth liquid outlet and the third liquid outlet.

[0044] In some embodiments of the heat exchange device, the throttling assembly includes a first throttling element, and the heat exchange device further includes:

[0045] A first mounting plate is connected between the first layer plate and the second layer plate, and the first mounting plate is configured to fix the first throttling element; and

[0046] A third mounting plate is connected between the first layer plate and the second layer plate, and is disposed opposite to and spaced apart from the first mounting plate. The third mounting plate and the first mounting plate are respectively located on both sides of the inlet of the first throttling element along the axial direction.

[0047] A liquid storage space is formed between the first mounting plate, the third mounting plate, the first layer plate, the second layer plate, the partition plate, and the housing, and the inlet of the first throttling device is connected to the liquid storage space.

[0048] In some embodiments of the heat exchange apparatus, the following further includes:

[0049] A second vapor-liquid separator is located within the third space and downstream of the throttling assembly along the axial direction. The second vapor-liquid separator includes a second gas outlet and a second liquid outlet. The second gas outlet is connected to the refrigerant outlet of the evaporator, and the second liquid outlet is connected to the refrigerant inlet of the evaporator.

[0050] The superheating component, located within the subspace where the supercooling component is located and connected to the outside of the supercooling box, is configured to exchange heat with the gaseous refrigerant flowing out of the second outlet.

[0051] The second gas outlet is connected to the refrigerant outlet of the evaporator through a first gas flow channel and a second gas flow channel. The first gas flow channel and the second gas flow channel are located on both sides of the partition. The first gas flow channel connects the second gas outlet and the second gas flow channel. The second gas flow channel connects the first gas flow channel and the refrigerant outlet of the evaporator. The superheating component is located in the second gas flow channel.

[0052] In some embodiments of the heat exchange device, the superheating component includes a plurality of superheating plates, which are spaced apart along the axial direction and connected to the outer wall of the subcooling box.

[0053] In some embodiments of the heat exchange device, two adjacent superheating plates are arranged in a horizontally radially staggered manner.

[0054] In some embodiments of the heat exchange apparatus, the following further includes:

[0055] The first end plate is connected to the first end of the housing along the axial direction near the first liquid inlet;

[0056] The fourth mounting plate is connected between the first layer plate and the second layer plate, and is disposed opposite to and spaced apart from the first end plate along the axial direction. The second air outlet is disposed on the fourth mounting plate.

[0057] The first gas flow channel is formed at least partially between the fourth mounting plate, the partition plate, the first end plate, the first layer plate, the second layer plate, and the housing.

[0058] In some embodiments of the heat exchange apparatus, the following further includes:

[0059] The second end plate is connected to the second end of the housing along the axial direction near the third outlet; and

[0060] The third mounting plate is connected between the first layer plate and the second layer plate, and is disposed opposite to and spaced apart from the refrigerant inlet and the second end plate of the throttling assembly along the axial direction of the housing;

[0061] The first gas flow channel is formed at least partially between the third mounting plate, the first layer plate, the second layer plate, the partition plate, the second end plate, and the housing.

[0062] In some embodiments of the heat exchange device, a baffle plate is also included, which is located within the second space and extends along the axial direction. The baffle plate is angled to the second layer plate and is located on one side of the evaporator along the horizontal radial direction of the shell. At least a portion of the first gas flow channel is formed between the baffle plate, the second layer plate, and the shell.

[0063] In some embodiments of the heat exchange apparatus, the evaporator includes a heat exchange channel formed between two adjacent rows of evaporative heat exchange tubes and extending along the horizontal radial direction, the heat exchange channel connecting the first gas flow channel and the second gas flow channel.

[0064] In some embodiments of the heat exchange device, the heat exchange channel and the second gas flow channel are connected through a third gas flow channel, and a third vapor-liquid separation screen is provided in the third gas flow channel, and the third vapor-liquid separation screen is arranged in a horizontal direction.

[0065] In some embodiments of the heat exchange apparatus, the evaporator includes:

[0066] A liquid distribution device, comprising a plurality of drip holes located at the bottom, the plurality of drip holes being connected to the refrigerant outlet of the throttling assembly; and

[0067] Multiple evaporative heat exchange tubes extend along the axial direction and are located below the openings of the multiple drip holes.

[0068] In some embodiments of the heat exchange device, a first water chamber assembly is further included, which is disposed at a second end of the housing along the axial direction and includes:

[0069] A first end cap includes a first cooling water inlet, a first cooling water outlet, a first chilled water inlet, and a first chilled water outlet. The first cooling water inlet communicates with the inlet of a water inlet pipe section in the condenser and is arranged opposite to it along the axial direction. The first cooling water outlet communicates with the outlet of a water outlet pipe section in the condenser and is arranged opposite to it along the axial direction. The first chilled water inlet communicates with the inlet of a water inlet pipe section in the evaporator and is arranged opposite to it along the axial direction. The first chilled water outlet communicates with the outlet of a water outlet pipe section in the evaporator and is arranged opposite to it along the axial direction.

[0070] Multiple first-stage partitions are located inside the first end cover and divide the internal space of the first end cover into a first water zone, a second water zone, a third water zone, and a fourth water zone. The inlet pipe section of the condenser is connected to the first water zone, the outlet pipe section of the condenser is connected to the second water zone, the inlet pipe section of the evaporator is connected to the third water zone, and the outlet pipe section of the evaporator is connected to the fourth water zone.

[0071] In some embodiments of the heat exchange device, a second water chamber assembly is further included, which is disposed at a first end of the housing along the axial direction and includes:

[0072] Second end cap; and

[0073] The second partition plate is located inside the second end cover and divides the internal space of the second end cover into a fifth water zone and a sixth water zone. The fifth water zone is connected to the inlet and outlet water pipes in the condenser, and the sixth water zone is connected to the inlet and outlet water pipes in the evaporator.

[0074] A second aspect of this disclosure provides a refrigeration system, comprising:

[0075] The heat exchange device described in the first aspect of this disclosure; and

[0076] Compressor unit.

[0077] In some embodiments of the refrigeration system, the compressor device includes a primary compressor and a secondary compressor, the throttling assembly includes a first throttling element and a second throttling element spaced apart along the axial direction, and the heat exchange device further includes a first exhaust pipe and a first vapor-liquid separator, the first vapor-liquid separator being connected along the axial direction between the first throttling element and the second throttling element, and the first exhaust pipe being connected to a first outlet of the first vapor-liquid separator and a pipeline between the primary compressor and the secondary compressor.

[0078] The heat exchange device provided in this embodiment employs a cylindrical shell, and within the shell, a first plate including a first liquid outlet and a second plate including a second liquid outlet are arranged to divide the space within the shell. The condenser is arranged in the first space between the first plate and the shell, the evaporator is arranged in the second space between the second plate and the shell, and a throttling assembly is arranged in a third space between the first plate, the second plate, and the shell. This allows the refrigerant flowing into the shell to pass through the condenser to the first liquid outlet, and then sequentially through the throttling assembly and the second liquid outlet to the evaporator. The first and second plates of this heat exchange device layer and isolate the space within the shell, integrating the condenser, evaporator, and throttling assembly within the same shell. This reduces the need for separate structures, making the main components involved in the heat exchange process more compact, improving space utilization, and facilitating maintenance. Furthermore, it reduces the number of external connecting pipes and interfaces, thereby reducing the risk of refrigerant leakage and vibration transmission, and shortening the refrigerant flow path within the heat exchange device to improve heat exchange efficiency.

[0079] The refrigeration system disclosed herein includes the heat exchange device of this disclosure, thereby possessing the advantages of the heat exchange device of this disclosure. The heat exchange device of this refrigeration system integrates the condenser, evaporator, and throttling component within the same housing. This reduces the need for separate structures, improving space utilization, and also reduces the number of external connecting pipes and interfaces, thereby reducing the risk of refrigerant leakage and vibration transmission, and shortening the refrigerant flow path within the refrigeration system to improve operating efficiency.

[0080] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0081] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0082] Figure 1 This is a schematic diagram of the structure of a heat exchange device according to some embodiments of the present disclosure, showing a portion of the flow path of the gaseous refrigerant within the housing.

[0083] Figure 2 for Figure 1 The right view of the heat exchange device shown.

[0084] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the heat exchange device.

[0085] Figure 4This is an isometric view of the internal structure of a heat exchange device according to some embodiments of this disclosure.

[0086] Figure 5 for Figure 4 The diagram shows a partial structural diagram of the heat exchange device.

[0087] Figure 6 for Figure 5 The diagram shows the structure of the first plate of the heat exchange device.

[0088] Figure 7 for Figure 5 A schematic diagram of the baffle plate of the subcooling component of the heat exchange device shown.

[0089] Figure 8 for Figure 5 A schematic diagram of the superheater plate of the superheater assembly of the heat exchange device shown.

[0090] Figure 9 for Figure 4 The heat exchange device shown is a side perspective view.

[0091] Figure 10 for Figure 4 A schematic diagram of the first water chamber assembly of the heat exchange device shown.

[0092] Figure 11 for Figure 4 The diagram shows the structure of the second water chamber assembly of the heat exchanger.

[0093] Figure 12 This is an isometric view of the internal structure of a heat exchange device according to some embodiments of this disclosure.

[0094] Figure 13 for Figure 12 The diagram shows a partial structural diagram of the heat exchange device.

[0095] Figure 14 for Figure 12 A schematic diagram of the structure of the second plate of the heat exchange device shown.

[0096] Figure 15 for Figure 12 The diagram shows the structure of the partition plate of the heat exchange device.

[0097] Figure 16 for Figure 12 The diagram shows the structure of the fourth mounting plate of the heat exchange device.

[0098] Figure 17 for Figure 12 The diagram shows the structure of the liquid distribution device and the baffle plate of the heat exchange device.

[0099] Figure 1-17In the figures, the labels represent:

[0100] 1. Shell, 2. First layer plate, 2a. First liquid outlet, 3. Condenser, 4. Second layer plate, 4a. Second liquid outlet, 5. Baffle plate, 5a. Fourth liquid outlet, 8. Second end plate, 9. First end plate, 10. First throttling element, 11. First vapor-liquid separation section, 12. Second throttling element, 13. Second vapor-liquid separation section, 14. Liquid distribution device, 15. Evaporator, 151. Evaporation heat exchange tube, 16. Inlet pipe, 17. Anti-impact baffle plate, 181. Subcooling heat exchange tube, 182. Condensation heat exchange tube, 21. Subcooling box, 21a. Third liquid outlet, 22. Baffle plate, 22a. Baffle plate mounting hole, 23. Superheating plate, 23A. Slot, 25. Third mounting plate, 26. First mounting plate, 27. Liquid storage space, 29. First gas distribution plate, 30. First vapor-liquid separation mesh, 31. First row 32. Air pipe, 32a. Anti-impact component, 34. Third liquid outlet, 35. Second mounting plate, 36. Second vapor distribution plate, 37. Second vapor-liquid separator, 38. Fourth mounting plate, 39. Rectangular groove, 40. Air baffle, 41. Heat exchange channel, 42. Third vapor-liquid separator, 43. Second exhaust pipe, 46. First water chamber assembly, 461. First end cap, 47. First partition plate, 48. First cooling water inlet, 49. First cooling water outlet, 50. First chilled water inlet, 51. First chilled water outlet, 52. First water zone, 53. Second water zone, 54. Third water zone, 55. Fourth water zone, 56. Second water chamber assembly, 561. Second end cap, 57. Second partition plate, 58. Fifth water zone, 59. Sixth water zone, 101. First connecting pipe, 202. Second connecting pipe. Detailed Implementation

[0101] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0102] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0103] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0104] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are generally based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0105] In the following description, "left" and "right" are referred to as Figure 2 and Figure 3 The left and right directions in the middle. Figure 1 The middle arrow indicates the direction of gaseous refrigerant flow.

[0106] like Figures 1 to 17 As shown in the figure, this disclosure provides a heat exchange device. The heat exchange device includes:

[0107] Shell 1, which is cylindrical;

[0108] The first layer plate 2 extends axially within the housing 1 and includes a first liquid outlet 2a.

[0109] The second layer plate 4 extends axially within the housing 1 and is disposed opposite to and spaced apart from the first layer plate 2. The second layer plate 4 includes a second liquid outlet 4a.

[0110] The condenser 3 is located in the first space between the first plate 2 and the shell 1;

[0111] Evaporator 15 is located in the second space between the second layer plate 4 and the shell 1; and

[0112] The throttling assembly is located in the third space between the first layer plate 2, the second layer plate 4 and the housing 1, and the throttling assembly is connected to the first liquid outlet 2a and the second liquid outlet 4a.

[0113] The refrigerant flowing into the casing 1 flows through the condenser 3 to the first liquid outlet 2a, and then flows through the throttling component and the second liquid outlet 4a to the evaporator 15.

[0114] For example, the shell 1 can be cylindrical, or it can be a prism, cuboid or other cylindrical structure to improve the adaptability of the heat exchange device to the installation space.

[0115] like Figure 1-4 As shown, in some embodiments, the condenser 3 may include multiple condensing heat exchange tubes 182 and an anti-impact baffle 17. The multiple condensing heat exchange tubes 182 extend axially along the shell within the first space. Cooling water flows through the condensing heat exchange tubes 182. The anti-impact baffle 17 is located above the multiple condensing heat exchange tubes 182. The heat exchange device may also include an inlet pipe 16, which is connected to the top of the shell 1 and communicates with the first space. High-temperature, high-pressure refrigerant gas enters the condenser 3 through the inlet pipe 16, and after being homogenized by the anti-impact baffle 17, it exchanges heat with the cooling water in the condensing heat exchange tubes 182, condensing the high-temperature, high-pressure refrigerant gas into a high-temperature liquid. The high-temperature liquid flows out of the first space through the first liquid outlet 2a and flows towards the throttling assembly.

[0116] like Figure 3-6 As shown, in some embodiments, the first plate 2 can be arranged conformally to the bottom of the multiple condensing heat exchange tubes 182. For example, the first plate 2 can be a stepped plate with a left-high and right-low orientation along its width direction, forming a "Z" shape, which can adapt to the distribution of the condensing heat exchange tubes 182 in the condenser 3 and facilitate the accumulation of the liquid refrigerant after heat exchange in the condenser 3 in the lower area of ​​the first plate 2, so that it can flow to the throttling component through the first liquid outlet 2a.

[0117] like Figure 3 and Figure 14 As shown, in some embodiments, the second layer 4 can be a straight plate.

[0118] In some embodiments (not shown), the heat exchange device may include a liquid cooling channel. The liquid cooling channel connects a first liquid outlet 2a on the first plate 2 and the refrigerant inlet of the throttling assembly. High-temperature liquid refrigerant flows into the throttling assembly through the first liquid outlet 2a and the liquid cooling channel.

[0119] In some embodiments (not shown), the first liquid outlet 2a and the refrigerant inlet of the throttling component can be arranged opposite to each other and at intervals to shorten the length of the liquid cooling channel. The first liquid outlet 2a and the refrigerant inlet of the throttling component can also be located on opposite sides of the housing 1 along the axial direction to extend the flow path of the liquid refrigerant from the first liquid outlet 2a to the refrigerant inlet of the throttling component, which helps to slow down the speed at which the liquid refrigerant enters the refrigerant inlet of the throttling component, thereby helping to avoid the liquid refrigerant impacting the refrigerant inlet of the throttling component.

[0120] Based on the heat exchange device provided in this embodiment, a cylindrical shell 1 is adopted, and a first plate 2 including a first liquid outlet 2a and a second plate 4 including a second liquid outlet 4a are provided in the shell 1 to divide the space inside the shell 1. The condenser 3 is arranged in the first space between the first plate 2 and the shell 1, the evaporator 15 is arranged in the second space between the second plate 4 and the shell 1, and the throttling component is arranged in the third space between the first plate 2, the second plate 4 and the shell 1, so that the refrigerant flowing into the shell 1 flows through the condenser 3 to the first liquid outlet 2a, and then flows through the throttling component and the second liquid outlet 4a to the evaporator 15. The first plate 2 and the second plate 4 of the heat exchange device separate the space inside the shell 1 into layers, so that the condenser 3, evaporator 15 and throttling components are integrated inside the same shell 1. On the one hand, this helps to reduce the split structure, making the main components involved in the heat exchange process more compact, improving space utilization and facilitating maintenance. On the other hand, it helps to reduce the number of external connection pipes and interfaces, thereby reducing the risk of refrigerant leakage and vibration transmission, and shortening the refrigerant flow in the heat exchange device to improve heat exchange efficiency.

[0121] like Figures 1-3 , Figure 12 and Figure 13 As shown, in some embodiments, the first layer 2 and the second layer 4 are arranged at intervals along the vertical direction.

[0122] The first plate 2 and the second plate 4 are arranged vertically, which facilitates the natural vertical distribution of the first space, the third space, and the second space, thus placing the condenser 3 above and the evaporator 15 below, with the throttling assembly located between the condenser 3 and the evaporator 15. The high position of the condenser 3 allows for the natural downward flow of refrigerant driven by gravity, eliminating the need for an external drive device to deliver liquid refrigerant to the throttling assembly and reducing the need for piping between the condenser 3 and the throttling assembly. Furthermore, the vertical arrangement of the first plate 2 and the second plate 4 facilitates the rapid downward transport of liquid refrigerant from the first space to the throttling assembly in the third space, thereby improving heat exchange efficiency. Additionally, the low position of the evaporator 15 facilitates the upward flow of gaseous refrigerant generated within the evaporator 15. The arrangement of the throttling component between the evaporator 15 and the condenser 3 in the vertical direction shortens the physical distance of the refrigerant flow path from the condenser 3 to the throttling component and then to the evaporator 15. This helps to reduce redundant design of connecting pipes, improve the heat exchange efficiency of the heat exchange device, and reduce energy consumption and operation and maintenance complexity.

[0123] like Figures 1 to 5 , Figure 12 and Figure 13 As shown, in some embodiments, the throttling assembly includes a first throttling element 10 and a second throttling element 12 spaced apart along the axial direction, and the heat exchange device further includes at least one of the following components located in the third space:

[0124] The first vapor-liquid separation section 11 is axially connected between the first throttling element 10 and the second throttling element 12;

[0125] The second vapor-liquid separator 13 is located on one side of the throttling assembly along the axial direction and is located between the throttling assembly and the evaporator 15 along the refrigerant flow path.

[0126] The subcooling component, arranged horizontally radially alongside the throttling component, is configured to subcool the refrigerant flowing out of the first liquid outlet 2a; and

[0127] The superheating component, arranged horizontally radially alongside the throttling component, is configured to superheat the gaseous refrigerant flowing out of the throttling component.

[0128] The first vapor-liquid separator 11, the second vapor-liquid separator 13, the subcooling assembly, and the superheating assembly are arranged in the third space, that is, located between the condenser 3 and the evaporator 15 in the vertical direction. The first vapor-liquid separator 11 is axially connected between the first throttling element 10 and the second throttling element 12. The second vapor-liquid separator 13 is located on one side of the throttling assembly in the axial direction. The subcooling assembly and the superheating assembly are arranged side by side with the throttling assembly in the horizontal radial direction. This layout is conducive to making full use of the axial space and the horizontal radial space of the third space, realizing the integration of the heat exchange device with two-stage throttling function into the shell 1, reducing the split structure, which is conducive to improving the space utilization rate. Furthermore, it makes the spatial layout in the shell 1 match the refrigerant flow path and heat exchange mechanism, which is conducive to maintaining heat exchange continuity, thereby improving the heat exchange efficiency in the heat exchange device.

[0129] like Figure 12 and Figure 13 As shown, in some embodiments, the throttling assembly includes a first throttling element 10 and a second throttling element 12. The inlet of the first throttling element 10 is connected to the first liquid outlet 2a, the second throttling element 12 is located axially downstream of the first throttling element 10, and the outlet of the second throttling element 12 is connected to the refrigerant inlet of the evaporator 15.

[0130] The heat exchange device also includes a first vapor-liquid separation section 11, which is axially connected between the outlet of the first throttling element 10 and the inlet of the second throttling element 12, and includes a first gas outlet and a first liquid outlet. The first gas outlet is connected to the outside of the housing 1, and the first liquid outlet is connected to the inlet of the second throttling element 12.

[0131] like Figure 12 and Figure 13 As shown, in some embodiments, the first outlet may be located near the top of the first vapor-liquid separation section 11. The heat exchange device may include a first exhaust pipe 31, which is connected to the housing 1 and communicates with the first outlet and the outside of the housing 1.

[0132] The first vapor-liquid separator 11 is axially connected between the outlet of the first throttling element 10 and the inlet of the second throttling element 12. This facilitates the rapid entry of the refrigerant into the first vapor-liquid separator 11 after expansion through the first throttling element 10, and the rapid discharge of gaseous refrigerant through the first outlet within the first vapor-liquid separator 11. This reduces the likelihood of gaseous refrigerant carrying liquid droplets into the second throttling element 12. Compared to a split structure, this design reduces the need for external connecting pipes and support structures, thus achieving a compact layout.

[0133] like Figure 12 and Figure 13 As shown, in some embodiments, the heat exchange device further includes:

[0134] A first mounting plate 26 is connected between a first layer plate 2 and a second layer plate 4, and the first mounting plate 26 is configured to fix the first throttling element 10; and

[0135] The second mounting plate 34 is connected between the first layer plate 2 and the second layer plate 4, and is axially opposite to and spaced apart from the first mounting plate 26. The second mounting plate 34 is configured to fix the second throttling element 12.

[0136] The first separation space of the first vapor-liquid separation section 11 is formed between the first mounting plate 26, the second mounting plate 34, the first layer plate 2, the second layer plate 4 and the shell 1.

[0137] For example, such as Figure 12 and Figure 13 As shown, the first throttling element 10 and the second throttling element 12 can be throttling pipes. Both the first mounting plate 26 and the second mounting plate 34 are vertically arranged and have mounting holes. The first throttling element 10 passes through the mounting hole of the first mounting plate 26 and is fixedly connected to the first mounting plate 26. The second throttling element 12 passes through the mounting hole of the second mounting plate 34 and is fixedly connected to the second mounting plate 34. This arrangement is simple in structure and allows the outlet of the first throttling element 10 and the inlet of the second throttling element 12 to be directly located within the first separation space. This reduces axial space occupation and improves space utilization. Furthermore, it eliminates the independent connecting pipes and interface structures between the primary and secondary throttling processes, achieving seamless connection between refrigerant expansion, flash separation, and secondary expansion processes. This helps ensure the stability of the refrigerant phase and reduces the risk of leakage.

[0138] For example, the first mounting plate 26 and the second mounting plate 34 can be detachably connected to the first layer plate 2 and the second layer plate 4, or the first mounting plate 26 and the second mounting plate 34 can be integrally formed with the first layer plate 2 and the second layer plate 4.

[0139] The first mounting plate 26 and the second mounting plate 34 have simple structures, which facilitates the rapid installation and positioning of the first throttling element 10 and the second throttling element 12, and also helps to reduce axial space occupation. The first separation space is formed between the first mounting plate 26, the second mounting plate 34, the first layer plate 2, the second layer plate 4, and the shell 1, which helps to avoid additional space occupation and also helps to reduce the setting of connecting pipes between the first throttling element 10, the second throttling element 12, and the first vapor-liquid separator 11, thereby helping to avoid refrigerant leakage caused by vibration of connecting pipes. In addition, the geometric boundary of the first separation space is defined by the first mounting plate 26, the second mounting plate 34, the first layer plate 2, the second layer plate 4, and the shell 1. The first separation space is an elongated space extending axially. After the refrigerant enters the first separation space, it is guided by the plate surface to automatically form an axial flow state, which helps to match the geometry of the first vapor-liquid separator 11 with the refrigerant flow direction, thereby helping to reduce the setting of connecting pipes and interfaces, reduce the risk of leakage, and improve heat exchange efficiency. After the refrigerant undergoes a first-stage throttling expansion through the first throttling element 10, it enters the first vapor-liquid separation section 11 to complete the gas-liquid separation. That is, the first vapor-liquid separation section 11 directly connects the two-stage throttling process, which is conducive to accurately intercepting liquid refrigerant and discharging gaseous refrigerant, thereby improving the uniformity and stability of heat exchange in the evaporator 15.

[0140] like Figure 12 and Figure 13 As shown, in some embodiments, the first vapor-liquid separator 11 further includes:

[0141] The first vapor-liquid separator 30 is arranged vertically and intermittently opposite to and between the first layer plate 2 and the second layer plate 4. The first vapor-liquid separator 30 is axially connected between the first mounting plate 26 and the second mounting plate 34, and is located above the outlet of the first throttling element 10. The outlet of the first throttling element 10 is located within the first separation space and below the first vapor-liquid separator 30; and / or

[0142] A first air distribution plate 29 is axially located between a first mounting plate 26 and a second mounting plate 34, and is disposed opposite to and spaced apart from the first mounting plate 26 and the second mounting plate 34. The first air distribution plate 29 is close to the outlet of the first throttling element 10 and includes a plurality of first through holes; and / or

[0143] The anti-impact component 32 is located axially between the first mounting plate 26 and the second mounting plate 34, and is disposed opposite to and spaced apart from the first mounting plate 26 and the second mounting plate 34. The anti-impact component 32 is close to the inlet of the second throttling component 12 and includes a third liquid outlet 32a. The third liquid outlet 32a is located at the bottom of the anti-impact component 32 and communicates with the outlet of the first throttling component 10 and the inlet of the second throttling component 12.

[0144] Due to the difference in density between the gaseous and liquid refrigerants, the gaseous refrigerant flows upward after entering the first separation space from the outlet of the first throttling element 10. It undergoes gas-liquid separation via the first vapor-liquid separation mesh 30 and flows out of the housing 1. The first vapor-liquid separation mesh 30 helps improve the separation effect between the gaseous and liquid refrigerants. The first gas equalization plate 29, located near the outlet of the first throttling element 10 and including multiple first through holes, facilitates the uniform distribution of refrigerant within the first separation space, thereby improving the vapor-liquid separation effect. A buffer space is formed between the anti-impact member 32 and the second mounting plate 34, which helps reduce the flow velocity of the liquid refrigerant before entering the second throttling element 12, preventing the liquid refrigerant from impacting the inlet of the second throttling element 12, thus helping to maintain the operational stability of the second throttling element 12.

[0145] like Figure 12 and Figure 13 As shown, in some embodiments, the third liquid outlet 32a and the inlet of the second throttling element 12 are offset from each other along the horizontal radial direction of the housing 1. For example, the third liquid outlet 32a is located to the left of the second throttling element 12 along the horizontal radial direction. In other embodiments (not shown), the third liquid outlet 32a may also be located to the right of the second throttling element 12 along the horizontal radial direction.

[0146] The third liquid outlet 32a and the inlet of the second throttling device 12 are staggered with each other along the horizontal radial direction of the housing 1. This allows the liquid refrigerant to flow a certain distance along the horizontal radial direction of the housing 1 through the third liquid outlet 32a before flowing into the second throttling device 12. This helps to further reduce the flow velocity of the liquid refrigerant before it enters the second throttling device 12, and avoids the liquid refrigerant impacting the inlet of the second throttling device 12. This helps to maintain the working stability of the second throttling device 12.

[0147] like Figure 12 and Figure 13 As shown, in some embodiments, the heat exchange device further includes a third mounting plate 25, which is connected between the first layer plate 2 and the second layer plate 4, and is disposed opposite to and spaced apart from the first mounting plate 26 on the side of the first mounting plate 26 that is axially away from the first vapor-liquid separation section 11. A liquid storage space 27 is formed between the first mounting plate 26, the third mounting plate 25, the first layer plate 2, the second layer plate 4 and the housing 1. The liquid storage space 27 is connected to the inlet of the first throttling element 10 and the first liquid outlet 2a.

[0148] The liquid storage space 27 helps prevent the liquid refrigerant flowing out of the first liquid outlet 2a from directly impacting the inlet of the first throttling element 10, thus helping to maintain the operational stability of the first throttling element 10. Using only a third mounting plate 25, the liquid storage space 27 is formed between the third mounting plate 25, the first mounting plate 26, the first layer plate 2, the second layer plate 4, and the housing 1, which simplifies the structural design and improves space utilization. Furthermore, the first mounting plate 26 provides a stable mounting base for the first throttling element 10 and also forms the liquid storage space 27, improving the structural functional integration. The third mounting plate 25 has a simple structure, allowing for flexible placement, which facilitates the quick positioning of the liquid storage space 27 on the inlet side of the first throttling element 10, simplifying the installation process and increasing installation speed.

[0149] like Figure 12 and Figure 13 As shown, in some embodiments, the heat exchange device further includes a second vapor-liquid separation section 13, which is located in the third space and is axially located on the side of the second throttling element 12 away from the first vapor-liquid separation section 11. The second vapor-liquid separation section 13 includes a second gas outlet and a second liquid outlet. The second gas outlet is connected to the refrigerant outlet of the evaporator 15, and the second liquid outlet is connected to the refrigerant inlet of the evaporator 15.

[0150] The second vapor-liquid separator 13 helps to improve the purity of the liquid refrigerant flowing to the evaporator 15 and enhances the liquid distribution effect. Furthermore, the arrangement of the second vapor-liquid separator 13 improves the utilization of axial space within the housing 1 and reduces the number of connecting pipes and interfaces between the second vapor-liquid separator 13 and the throttling assembly, thereby helping to prevent refrigerant leakage caused by vibration of the connecting pipes.

[0151] like Figure 12 and Figure 13 As shown, in some embodiments, the heat exchange device further includes:

[0152] A second mounting plate 34 is connected between the first layer plate 2 and the second layer plate 4, and the second mounting plate 34 is configured to fix the second throttling element 12; and

[0153] The fourth mounting plate 37 is connected between the first layer plate 2 and the second layer plate 4. It is located opposite to the second mounting plate 34 and spaced apart from the first vapor-liquid separator 11 on the side of the second mounting plate 34 that is axially away from the first vapor-liquid separator 11.

[0154] The second separation space of the second vapor-liquid separation section 13 is formed between the second mounting plate 34, the fourth mounting plate 37, the first layer plate 2, the second layer plate 4 and the housing 1.

[0155] A second separation space for the second vapor-liquid separator 13 is formed between the second mounting plate 34, the fourth mounting plate 37, the first layer plate 2, the second layer plate 4, and the housing 1. This arrangement has a simple structure, is easy to install, and makes full use of the axial space within the housing 1, thereby improving space utilization. Furthermore, since the second mounting plate 34 is used to fix the second throttling element 12, it allows the outlet of the second throttling element 12 to be directly located within the second separation space. This eliminates the need for connecting pipes between the second throttling element 12 and the second vapor-liquid separator 13, thus preventing refrigerant leakage due to vibration of the connecting pipes.

[0156] like Figure 12 and Figure 13 As shown, in some embodiments, the second vapor-liquid separator 13 includes:

[0157] The second vapor-liquid separator 36 is arranged vertically and intermittently opposite to and between the first plate 2 and the second plate 4. The second vapor-liquid separator 36 is axially connected between the second mounting plate 34 and the fourth mounting plate 37, and is located above the outlet of the second throttling element 12; and / or

[0158] The second air distribution plate 35 is located axially between the second mounting plate 34 and the fourth mounting plate 37, and is disposed opposite to and spaced apart from the second mounting plate 34 and the fourth mounting plate 37. The second air distribution plate 35 is close to the outlet of the second throttling element 12 and includes a plurality of second through holes.

[0159] After the refrigerant flows into the second separation space from the outlet of the second throttling element 12, the gaseous refrigerant flows upward and passes through the second vapor-liquid separator 36 before flowing to the evaporator 15. The second vapor-liquid separator 36 can trap liquid refrigerant, thereby improving the separation effect between gaseous and liquid refrigerant. The second gas distribution plate 35 is close to the outlet of the second throttling element 12 and includes multiple second through holes, which helps to evenly distribute the refrigerant in the second separation space, thereby improving the vapor-liquid separation effect.

[0160] like Figure 1-8 As shown, in some embodiments, the heat exchange device further includes a subcooling component, which includes:

[0161] The subcooling box 21 extends axially and includes a first liquid inlet and a third liquid outlet 21a located at opposite ends of the subcooling box 21. The first liquid inlet communicates with the first liquid outlet 2a, and the third liquid outlet 21a communicates with the inlet of the throttling assembly.

[0162] The subcooling heat exchange tube 181 extends axially within the subcooling box 21 and is configured to allow cooling water to flow through it for subcooling heat exchange with the liquid refrigerant entering the subcooling box 21.

[0163] like Figure 5As shown, in some embodiments, multiple baffles 22 are arranged axially spaced inside the subcooled box 21, with adjacent baffles 22 staggered vertically. The high-temperature liquid refrigerant exchanges heat with the cooling water in the subcooled heat exchange tube 181 within the subcooled box 21, and flows vertically through the baffles 22 to enhance heat exchange.

[0164] For example, such as Figure 7 As shown, the baffle plate 22 includes multiple baffle plate mounting holes 22a, and the subcooling heat exchange tube 181 is installed in the baffle plate mounting holes 22a.

[0165] The subcooling housing 21, which houses the subcooling assembly, is connected to the first liquid inlet and the first liquid outlet 2a to receive the high-temperature liquid refrigerant condensed by the condenser 3. The high-temperature liquid refrigerant exchanges heat with the subcooling heat exchange tube 181, thereby increasing the effective cooling capacity and improving the heat exchange efficiency of the heat exchange device. The subcooling housing 21 and the subcooling heat exchange tube 181 extend axially, which facilitates the axial arrangement of the subcooling assembly within the housing 1, thereby improving the utilization rate of axial space.

[0166] like Figures 1 to 3 As shown, in some embodiments, the heat exchange device further includes a partition 5, which is connected between the first plate 2 and the second plate 4 and extends axially. The partition 5 includes a fourth liquid outlet 5a, which is connected to the third liquid outlet 21a and the inlet of the throttling component. The partition 5 is configured to divide the third space into two subspaces, in which the throttling component and the subcooling component are located respectively.

[0167] For example, the partition 5 can be located on the horizontal radial centerline of the housing 1, or it can be set off from the centerline.

[0168] By using the simple structure of partition 5, the third space is divided into two sub-spaces side by side. This allows for more refined division and layout of the third space inside the shell 1, providing independent sub-spaces for the throttling and subcooling components to be installed and operate separately. This avoids interference between the refrigerant subcooling and throttling processes, ensuring the efficiency of subcooling heat exchange and the stability of the throttling process. Furthermore, the fourth liquid outlet 5a on partition 5 facilitates precise flow guidance, allowing the liquid refrigerant flowing from the subcooling component to be directly and quickly delivered to the inlet of the throttling component. This reduces pressure loss and heat dissipation during refrigerant flow and also minimizes the need for connecting pipes.

[0169] like Figure 5 and Figure 13 As shown, in some embodiments, the fourth liquid outlet 5a and the third liquid outlet 21a are arranged opposite to each other and spaced apart;

[0170] The heat exchange device includes a first connecting pipe 101, which connects to a fourth liquid outlet 5a and a third liquid outlet 21a.

[0171] The arrangement of the fourth liquid inlet 5a and the third liquid outlet 21a being opposite each other and connected by the first connecting pipe 101 is compact, which helps to reduce space occupation within the highly integrated housing 1, and also helps to reduce the flow resistance and pressure fluctuation of the subcooled liquid refrigerant before entering the throttling component.

[0172] like Figure 1 , Figure 12 and Figure 13 As shown, in some embodiments, the third mounting plate 25 is connected between the first layer plate 2 and the second layer plate 4, and is disposed opposite to and spaced apart from the first mounting plate 26. The third mounting plate 25 and the first mounting plate 26 are respectively located on both sides of the inlet of the first throttling element 10 along the axial direction.

[0173] The liquid storage space 27 is formed between the first mounting plate 26, the third mounting plate 25, the first layer plate 2, the second layer plate 4, the partition plate 5 and the shell 1, and the inlet of the first throttling element 10 is connected to the liquid storage space 27.

[0174] The liquid storage space 27 is formed by using the first mounting plate 26, the third mounting plate 25, the first layer plate 2, the second layer plate 4, the partition plate 5 and the shell 1, so that the liquid storage space 27 is located in the subspace where the throttling component is located, which is beneficial to improving space utilization and integration.

[0175] like Figures 1 to 3 As shown, in some embodiments, the heat exchange device further includes:

[0176] The superheating component, located in the subspace where the supercooling component is located and connected to the outside of the supercooling box 21, is configured to exchange heat with the gaseous refrigerant flowing out of the second outlet.

[0177] The second gas outlet is connected to the refrigerant outlet of the evaporator 15 through the first gas flow channel and the second gas flow channel. The first gas flow channel and the second gas flow channel are located on both sides of the partition 5, respectively. The first gas flow channel is connected to the second gas outlet and the second gas flow channel. The second gas flow channel is connected to the first gas flow channel and the refrigerant outlet of the evaporator 15. The superheating component is located in the second gas flow channel.

[0178] The superheating component helps reduce refrigerant droplets at the refrigerant outlet of evaporator 15, thus mitigating the risk of liquid carryover during compressor suction. The superheating and subcooling components are arranged within the same subspace and located in the second gas flow channel. This layout allows for efficient heat exchange between the gaseous refrigerant and the high-temperature liquid refrigerant within the subcooling housing 21, improving spatial integration. Firstly, the high-temperature liquid refrigerant within the subcooling housing 21 transfers heat to the superheating component. The refrigerant droplets carried by the gaseous refrigerant evaporate and absorb heat as they flow through the superheating component, ensuring sufficient superheating of the gaseous refrigerant exiting the evaporator 15 and effectively preventing liquid slugging. Secondly, the high-temperature liquid refrigerant inside the subcooling housing 21 simultaneously transfers heat to the cooling water inside the subcooling heat exchange tube 181 and to the low-temperature gaseous refrigerant and refrigerant droplets flowing through the superheating component, achieving subcooling and improving the heat exchange efficiency of the heat exchange device.

[0179] The first gas flow channel and the second gas flow channel are located on both sides of the partition 5 along the horizontal radial direction, which is conducive to guiding the flow path of the gaseous refrigerant under the condition of limited space. This allows functions such as gas-liquid separation, subcooling and superheating to be completed smoothly and orderly in the highly integrated shell 1, which is conducive to improving the heat exchange efficiency and operational reliability of the heat exchange device.

[0180] like Figures 2 to 5 As shown, in some embodiments, the overheating assembly includes a plurality of overheating plates 23, which are spaced apart along the axial direction and connected to the outer wall of the undercooling box 21.

[0181] For example, such as Figure 8 As shown, the superheater fin 23 may include a groove 23A. The groove 23A mates with at least a portion of the cross-sectional shape of the supercooler housing 21 to facilitate quick installation.

[0182] Multiple superheating plates 23 increase the heat exchange area, allowing the low-temperature gaseous refrigerant flowing through the heating element to fully exchange heat with the high-temperature liquid refrigerant inside the subcooling box 21. Furthermore, the axially spaced arrangement of the multiple superheating plates 23 also helps to increase the effective heat exchange area within the limited third space, improving space utilization. Additionally, the walls of the subcooling box 21 serve as heat exchange surfaces, increasing the functional integration of the subcooling box 21.

[0183] like Figures 2 to 5 As shown, in some embodiments, two adjacent superheating plates 23 are arranged in a horizontally radially staggered manner.

[0184] Within the compact space inside the housing 1, the staggered arrangement of the superheating fins 23 is beneficial for making full use of the cross-section of the second airflow channel, allowing the gaseous refrigerant to flow back and forth along the horizontal radial direction within the second gas flow channel. This helps to improve the heat exchange efficiency per unit space and ensures that the gaseous refrigerant is uniformly and fully superheated as it flows through the entire superheating assembly.

[0185] In some embodiments (not shown), two adjacent superheating plates 23 may also be staggered in the vertical direction.

[0186] like Figure 12 , Figure 13 and Figure 16 As shown, in some embodiments, the heat exchange device further includes:

[0187] The first end plate 9 is connected to the first end of the housing 1 along the axial direction near the first liquid inlet;

[0188] The fourth mounting plate 37 is connected between the first layer plate 2 and the second layer plate 4, and is arranged axially opposite to and spaced apart from the first end plate 9. The second air outlet is provided on the fourth mounting plate 37.

[0189] The fourth mounting plate 37, the partition plate 5, the first end plate 9, the first layer plate 2, the second layer plate 4 and the housing 1 form at least a portion of the first gas flow channel.

[0190] For example, such as Figure 16 As shown, the top of the fourth mounting plate 37 includes a plurality of rectangular slots 37A spaced apart along the width direction. The rectangular slots 37A and the bottom of the first layer plate 2 together form a second air outlet. The plurality of second air outlets are equidistant along the horizontal radial direction, and the formed second air outlet is square. In some other embodiments (not shown), the formed second air outlet may also be triangular, semi-circular, or other shapes.

[0191] By directly mounting the second outlet of the second vapor-liquid separator 13 onto the fourth mounting plate 37, it is advantageous for the second separation space of the second vapor-liquid separator 13 to directly connect with the first gas flow channel through the second outlet. This structural arrangement allows the gaseous refrigerant, after being separated by the second vapor-liquid separator 13, to directly enter the first gas flow channel within the inner shell 1, which is formed by the fourth mounting plate 37, the partition 5, the first end plate 9, the first layer plate 2, the second layer plate 4, and the shell 1. This helps to avoid the need for additional connecting pipes, reducing the risk of refrigerant leakage and assembly complexity. In addition, the fourth mounting plate 37 serves as both the outlet end wall of the second vapor-liquid separator 13 and the inlet end wall of the first gas flow channel, which contributes to a compact structure and improved space utilization.

[0192] like Figure 1 , Figure 12 and Figure 13 As shown, in some embodiments, the heat exchange device further includes:

[0193] The second end plate 8 is connected to the second end of the housing 1 along the axial direction near the third liquid outlet 21a; and

[0194] The third mounting plate 25 is connected between the first plate 2 and the second plate 4, and is arranged opposite to and spaced apart from the refrigerant inlet and the second end plate 8 of the throttling assembly along the axial direction of the housing 1.

[0195] The third mounting plate 25, the first layer plate 2, the second layer plate 4, the partition plate 5, the second end plate 8 and the housing 1 form at least a portion of the first gas flow channel.

[0196] Using the second end plate 8 and the third mounting plate 25 to restrict the space of the tail section of the "first gas flow channel" is beneficial to improving the spatial integration, avoiding the need for additional connecting pipes, and reducing the risk of refrigerant leakage and assembly complexity.

[0197] like Figure 1-3 , Figure 12 and Figure 13 As shown, in some embodiments, the heat exchange device further includes a baffle plate 41 located in the second space and extending axially. The baffle plate 41 is angled to the second layer plate 4 and located on one side of the evaporator 15 along the horizontal radial direction of the housing 1. At least a portion of the first gas flow channel is formed between the baffle plate 41, the second layer plate 4 and the housing 1.

[0198] For example, such as Figure 2 and Figure 3 As shown, the air baffle 41 can be perpendicular to the second layer plate 4. In some embodiments (not shown), the air baffle 41 can also be at an acute or obtuse angle to the second layer plate 4 to avoid interference between the air baffle 41 and other components inside the housing 1 during installation.

[0199] The simple baffle plate 41 allows at least part of the first gas flow channel to extend axially within the second space and be separated from the evaporator 15, which helps to make full use of the second space and improve the spatial integration.

[0200] like Figure 1 and Figure 10 As shown, in some embodiments, the evaporator 15 includes a heat exchange channel 42 formed between two adjacent rows of evaporation heat exchange tubes 151 and extending in a horizontal radial direction. The heat exchange channel 42 connects a first gas flow channel and a second gas flow channel.

[0201] Setting up heat exchange channel 42 helps to shorten the path of gaseous refrigerant within the heat exchange device and also helps to avoid setting up additional pipelines for transporting gaseous refrigerant, thereby improving space utilization.

[0202] like Figure 1 As shown, in some embodiments, the heat exchange channel 42 and the second gas flow channel are connected through a third gas flow channel, and a third vapor-liquid separation net 43 is provided in the third gas flow channel, which is arranged in a horizontal direction.

[0203] For example, the third vapor-liquid separator 43 is located on the side of the evaporator 15 away from the baffle plate 41 along the horizontal radial direction, and is located on the top side of the evaporation heat exchange tube 151. The position of the third vapor-liquid separator 43 is conducive to fully intercepting small droplets in the refrigerant flowing out through the heat exchange channel 42.

[0204] Setting a third vapor-liquid separation net 43 in the third gas channel connecting the heat exchange channel 42 and the second gas channel is beneficial to improving the dryness of the gaseous refrigerant flowing into the second gas channel, thereby improving the superheating heat exchange efficiency and ensuring the refrigerant condition at the refrigerant outlet of the evaporator 15.

[0205] like Figure 1-3 and Figure 17 As shown, in some embodiments, the evaporator 15 includes:

[0206] The liquid distribution device 14 includes a plurality of drip holes located at the bottom, the plurality of drip holes being connected to the refrigerant outlet of the throttling component; and

[0207] Multiple evaporative heat exchange tubes 151 extend axially and are located below the openings of multiple drip holes.

[0208] For example, such as Figure 17 As shown, multiple drip holes are arranged in a matrix array to improve the uniformity of liquid distribution. The liquid distribution device 14 includes a liquid distribution box, and multiple drip holes are located at the bottom of the liquid distribution box.

[0209] The inclusion of a liquid distribution device 14 helps improve the uniformity of the film distribution on the surface of the evaporative heat exchange tube 151, thereby helping to avoid the formation of dry spots and reduce the heat transfer coefficient of the heat exchange device.

[0210] like Figure 12 and Figure 13As shown, in some embodiments, the second layer plate 4 is located on top of the liquid distribution device 14 and closes the top opening of the liquid distribution box. The second liquid outlet 4a of the second layer plate 4 connects the inside of the liquid distribution box and the second separation space of the second vapor-liquid separation section 13. After the refrigerant is throttled by the second throttling element 12, it is in a two-phase state of gas and liquid. The second vapor-liquid separation section 13 helps to reduce the flow rate of the refrigerant in the liquid distribution device 14, thereby improving the liquid distribution effect of the liquid distribution device 14. It also helps to reduce the flow rate of the refrigerant flowing out of the drip hole, and helps to avoid the refrigerant splashing due to impact on the outer wall of the evaporation heat exchange tube 151, which would affect the film distribution effect and reduce the heat transfer coefficient.

[0211] like Figure 12 and Figure 13 As shown, in some embodiments, the baffle plate 41 is connected to the lower side of the liquid distribution device 14, which is beneficial to make the side wall of the liquid distribution device 14 also used to form the first gas flow channel, and to increase the volume of the first gas flow channel.

[0212] like Figures 10-12 As shown, in some embodiments, the heat exchange device further includes a first water chamber assembly 46, which is disposed at the second end of the housing 1 along the axial direction and includes:

[0213] The first end cap 461 includes a first cooling water inlet 48, a first cooling water outlet 49, a first chilled water inlet 50, and a first chilled water outlet 51. The first cooling water inlet 48 is connected to the inlet pipe of the condenser 3 and is axially opposite to it. The first cooling water outlet 49 is connected to the outlet pipe of the condenser 3 and is axially opposite to it. The first chilled water inlet 50 is connected to the inlet pipe of the evaporator 15 and is axially opposite to it. The first chilled water outlet 51 is connected to the outlet pipe of the evaporator 15 and is axially opposite to it.

[0214] Multiple first-stage partitions 47 are located inside the first end cover 461, dividing the internal space of the first end cover 461 into a first water zone 52, a second water zone 53, a third water zone 54, and a fourth water zone 55. The inlet pipe of the condenser 3 is connected to the first water zone 52, the outlet pipe of the condenser 3 is connected to the second water zone 53, the inlet pipe of the evaporator 15 is connected to the third water zone 54, and the outlet pipe of the evaporator 15 is connected to the fourth water zone 55.

[0215] like Figure 12 As shown, the first end cap 461 can be combined with the second end plate 8 to form a closed space. Figure 9 and Figure 10As shown, the first water chamber assembly 46 may include three first partition plates 47. Two of the three first partition plates 47 are flat plates and are arranged opposite each other and spaced apart in the vertical direction. The space between the upper first partition plate 47 and the first end cap 461 and the second end plate 8 is divided into a first water zone 52 and a second water zone 53 arranged side by side by another first partition plate 47 (in a Z-shape). A third water zone 54 is formed between the lower first partition plate 47, the second end plate 8, and the first end cap 461. A fourth water zone 55 is formed between the two opposite and spaced-apart first partition plates 47, the second end plate 8, and the first end cap 461.

[0216] The first water chamber assembly 46 facilitates the integration of the four external water pipe interfaces of the condenser 3 and evaporator 15 onto a single first end cap 461, simplifying the connection and disconnection to a single axial second end, thus saving space occupied by the heat exchange device. Multiple first partition plates 47 form independent first water zones 52, second water zone 53, third water zone 54, and fourth water zone 55, enabling a rational layout of cooling water and chilled water inlet and outlet channels within a limited space. Furthermore, by setting the first cooling water inlet 48, first cooling water outlet 49, first chilled water inlet 50, and first chilled water outlet 51 to their corresponding inlet and outlet pipe sections in an "axially opposite" configuration, water flow resistance losses are reduced.

[0217] like Figure 4 and Figure 11 As shown, in some embodiments, the heat exchange device further includes a second water chamber assembly 56, which is disposed at one axial end of the housing 1 and includes:

[0218] Second end cap 561; and

[0219] The second partition plate 57 is located inside the second end cover 561 and divides the interior of the second end cover 561 into a fifth water zone 58 and a sixth water zone 59. The fifth water zone 58 is connected to the inlet and outlet water pipes in the condenser 3, and the sixth water zone 59 is connected to the inlet and outlet water pipes in the evaporator 15.

[0220] like Figure 11 As shown, the second partition plate 57 is a horizontally arranged straight plate.

[0221] The second water chamber assembly 56 facilitates the integration of the tubes of the condenser 3 and the evaporator 15 together at the first axial end, and allows the heat exchange tube bundles inside the condenser 3 and the evaporator 15 to form a complete flow path, which helps to reduce space occupation and reduce the setting of connecting pipes between the condenser 3 and the evaporator 15.

[0222] like Figure 4As shown, in some embodiments, the first water chamber assembly 46 and the second water chamber assembly 56 are located at opposite ends of the heat exchange device along the axial direction.

[0223] The first water chamber assembly 46 and the second water chamber assembly 56 facilitate the integration of the cooling water and chilled water channels in the condenser 3 and evaporator 15 into the interior of the housing 1. This helps to avoid the need for additional U-bends or connecting pipes inside or outside the cylindrical housing 1, resulting in a compact internal structure and reducing refrigerant leakage points.

[0224] Another aspect of this disclosure provides a refrigeration system, which includes a heat exchange device and a compressor device as provided in this disclosure. The refrigeration system can be used, for example, in refrigeration equipment employing two-stage throttling, such as centrifugal water chillers.

[0225] The heat exchange device of this refrigeration system integrates the condenser 3, evaporator 15 and throttling component into the same housing 1. On the one hand, this helps to reduce the split structure and improve space utilization. On the other hand, it helps to reduce the number of external connection pipes and interfaces, thereby reducing the risk of refrigerant leakage and vibration transmission, and shortening the refrigerant flow to improve the overall heat exchange efficiency.

[0226] like Figure 1 As shown, in some embodiments, the compressor device includes a primary compressor and a secondary compressor (not shown), the throttling assembly includes a first throttling element 10 and a second throttling element 12 spaced apart along the axial direction, and the heat exchange device further includes a first exhaust pipe 31 and a first vapor-liquid separator 11. The first vapor-liquid separator 11 is axially connected between the first throttling element 10 and the second throttling element 12, and the first exhaust pipe 31 is connected to the first outlet of the first vapor-liquid separator 11 and the pipeline between the primary compressor and the secondary compressor.

[0227] The first exhaust pipe 31 is set up to replenish the gaseous refrigerant separated by the first vapor-liquid separator 11 between the first-stage compressor and the second-stage compressor, which is conducive to forming a two-stage compression and two-stage throttling incomplete cooling refrigeration cycle. Compared with a single-stage compression refrigeration cycle, it is beneficial to reduce the exhaust temperature of the compressor unit and improve the energy efficiency of the refrigeration system.

[0228] The following combination Figures 1 to 17 The refrigerant circulation process in the refrigeration system of the present disclosure will be described in detail.

[0229] like Figure 4 , Figure 9 and Figure 10As shown, external cooling water enters the first water zone 52 through the first cooling water inlet 48, and flows into the inlet pipe sections of the condenser heat exchanger tube 182 and the subcooling heat exchanger tube 181 in the first water zone 52. The cooling water flows axially from the second end plate 8 to the first end plate 9 in the inlet pipe sections of the condenser heat exchanger tube 182 and the subcooling heat exchanger tube 181, and then enters the fifth water zone 58. It then flows axially from the first end plate 9 to the second end plate 8 through the outlet pipe sections of the condenser heat exchanger tube 182 and the subcooling heat exchanger tube 181, and finally flows back into the second water zone 53, and then flows out of the heat exchange device through the first cooling water outlet 49.

[0230] like Figure 4 , Figure 9 and Figure 10 As shown, external cooling water enters the third water zone 54 through the first chilled water inlet 50, and flows into the inlet pipe section of the evaporative heat exchange tube 151 in the third water zone 54. The chilled water flows axially from the second end plate 8 to the first end plate 9 in the inlet pipe section of the evaporative heat exchange tube 151, and enters the sixth water zone 59. Then, it flows axially from the first end plate 9 to the second end plate 8 through the outlet pipe section of the evaporative heat exchange tube 151, and finally flows back into the fourth water zone 55, and then flows out of the heat exchange device through the first chilled water outlet 51.

[0231] like Figure 1 and Figure 4 As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor enters the first space through the inlet pipe 16. After being uniformly dispersed by the anti-impact baffle 17, it exchanges heat with the cooling water in the condenser heat exchange tube 182, causing the gaseous refrigerant to condense into high-temperature liquid refrigerant. The high-temperature liquid refrigerant then enters the interior of the subcooled box 21 through the first liquid outlet 2a and the second connecting pipe 202. The second connecting pipe 202 extends vertically, connecting the first liquid outlet 2a and the first liquid inlet of the subcooled box 21. The baffle 22 causes the high-temperature liquid refrigerant to flow axially from the second end plate 8 to the first end plate 9 inside the subcooled box 21, and during this process, it deflects the flow up and down to enhance heat exchange, and exchanges heat with the subcooled heat exchange tube 181 inside the subcooled box 21.

[0232] like Figure 1-3 , Figure 5 , Figure 12 and Figure 13 As shown, the subcooled refrigerant inside the subcooled box 21 flows out from the third liquid outlet 21a and flows through the first connecting pipe 101 to the fourth liquid outlet 5a. The subcooled refrigerant flows from the fourth liquid outlet 5a into the liquid storage space 27 and flows into the first throttling device 10 to reduce pressure and form a gas-liquid two-phase refrigerant that enters the first separation space of the first gas-liquid separation section 11.

[0233] like Figure 12 and Figure 13As shown, the gas-liquid two-phase refrigerant continues to flow axially after impacting the first gas equalization plate 29 in the first separation space. Due to the difference in density between the gas and liquid refrigerants, the gaseous refrigerant flows upward and, after passing through the first gas-liquid separation mesh 30 to achieve gas-liquid separation, reaches the first exhaust pipe 31 from the first gas outlet, and replenishes the gas between the first-stage compressor and the second-stage compressor. The liquid refrigerant flows in the lower region of the first gas-liquid separation mesh 30, reaches the anti-impact member 32, and reaches the inlet of the second throttling member 12 through the third liquid passage 32a machined on the anti-impact member 32.

[0234] like Figure 12 , Figure 13 and Figure 16 As shown, the liquid refrigerant, after being further depressurized by the second throttling device 12, forms a two-phase gas-liquid refrigerant that enters the second separation space of the second vapor-liquid separation section 13. Within this space, the two-phase refrigerant impacts the second gas equalization plate 35 and continues to flow axially. A second vapor-liquid separation mesh 36 is installed in the upper region of the second vapor-liquid separation section 13. Due to the different densities of the gas and liquid refrigerants, the gaseous refrigerant flows upward and passes through the second vapor-liquid separation mesh 36 to achieve gas-liquid separation. Finally, the gaseous refrigerant flows into the first gas flow channel through the second outlet formed by the fourth mounting plate 37 and the first layer plate 2.

[0235] like Figure 1-3 , Figure 12-14 , Figure 17 As shown, the liquid refrigerant flows in the lower region of the second vapor-liquid separation mesh 36 and reaches the liquid distribution box of the liquid distribution device 14 through the second liquid outlet 4a processed on the second layer plate 4. The liquid refrigerant is distributed to the outer wall of the evaporation heat exchange tube 151 through the drip holes, and evaporates into a gaseous state after exchanging heat with the chilled water in the evaporation heat exchange tube 151. Compared with the refrigerant directly entering the evaporator and entering the liquid distribution after two-stage throttling, in this embodiment, the refrigerant undergoes gas-liquid separation in the second vapor-liquid separation section 13 after two-stage throttling, and the separated liquid refrigerant is then distributed through the liquid distribution device 14. This helps to reduce the flow velocity of the refrigerant in the liquid distribution device 14 and enhance the liquid distribution effect. On the other hand, it also helps to avoid the high flow velocity of the refrigerant flowing out of the drip holes from impacting the outer wall of the evaporation heat exchange tube 151 and causing refrigerant splashing, thereby affecting the film distribution effect and reducing the heat transfer coefficient.

[0236] like Figure 1-3 , Figure 12 and Figure 13As shown, the gaseous refrigerant separated by the second vapor-liquid separator 13 flows into the flow channel section of the first gas flow channel from the second outlet, and flows axially from the first end plate 9 towards the direction close to the second end plate 8 within the first gas flow channel. After reaching the second end plate 8, part of the gaseous refrigerant enters upward into the flow channel section of the first gas flow channel formed between the third mounting plate 25, the first layer plate 2, the second layer plate 4, the partition plate 5, the second end plate 8, and the shell 1, and finally flows into the second gas flow channel. The other part of the gaseous refrigerant passes through the heat exchange channel 42 in the third space, and mixes with the gaseous refrigerant generated by evaporation on the outer wall of the evaporation heat exchange tube 151 and enters the third gas flow channel. During the upward flow of the gaseous refrigerant in the third gas flow channel, it passes through the third vapor-liquid separator 43, where small droplets carried by the gaseous refrigerant are trapped, and the dry gaseous refrigerant flows into the second gas flow channel.

[0237] like Figure 1-5 and Figure 8 As shown, the high-temperature liquid refrigerant inside the subcooled box 21 exchanges heat with the low-temperature gas and small droplets flowing through the heat exchange plate 23 in the second gas flow channel. The high-temperature liquid refrigerant inside the subcooled box 21 transfers heat to the cooling water inside the subcooled heat exchange tube 181 and the low-temperature gas and small droplets in the second gas flow channel, thereby cooling down to achieve subcooling and improve the energy efficiency of the refrigeration system.

[0238] Finally, the gaseous refrigerant in the second gas flow channel flows out of the heat exchange device from the second exhaust pipe 45 located axially close to the first end plate 9 and finally reaches the suction port of the first stage compressor.

[0239] Inside the subcooled housing 21, high-temperature liquid refrigerant flows from the first end plate 9 to the second end plate 8, while cooling water inside the subcooled heat exchange tube 181 flows from the second end plate 8 to the first end plate 9. Inside the second gas flow channel, low-temperature gaseous refrigerant carrying some small droplets flows from the second end plate 8 to the first end plate 9. Therefore, this heat exchange device forms a heat exchange structure where the high-temperature liquid refrigerant and cooling water flow in counter-current, and the high-temperature liquid refrigerant and low-temperature gaseous refrigerant flow in counter-current. This is beneficial for improving the heat transfer efficiency between the two media, reducing the outlet temperature of the high-temperature liquid refrigerant, increasing the subcooling degree of the condenser 3, and increasing the energy efficiency of the refrigeration system. In addition, the superheating component is beneficial for heating and evaporating the droplets carried by the refrigerant in the second gas flow channel, which helps reduce the risk of liquid carryover during compressor suction.

[0240] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A heat exchange device, characterized in that, include: The housing (1) is cylindrical; A first layer plate (2) extends axially within the housing (1) and includes a first liquid outlet (2a). The second layer plate (4) extends along the axial direction within the housing (1) and is disposed opposite to and spaced apart from the first layer plate (2), the second layer plate (4) including a second liquid outlet (4a). The condenser (3) is located in the first space between the first layer plate (2) and the shell (1); The evaporator (15) is located in the second space between the second layer plate (4) and the shell (1); and A throttling assembly is located in a third space between the first layer plate (2), the second layer plate (4) and the housing (1), and the throttling assembly is in communication with the first liquid outlet (2a) and the second liquid outlet (4a); The refrigerant flowing into the housing (1) flows through the condenser (3) to the first liquid outlet (2a), and then flows through the throttling assembly and the second liquid outlet (4a) to the evaporator (15).

2. The heat exchange device according to claim 1, characterized in that, The first layer (2) and the second layer (4) are arranged at intervals in the vertical direction.

3. The heat exchange device according to claim 2, characterized in that, The throttling assembly includes a first throttling element (10) and a second throttling element (12) spaced apart along the axial direction, and the heat exchange device further includes at least one of the following components located in the third space: The first vapor-liquid separation section (11) is connected along the axial direction between the first throttling element (10) and the second throttling element (12); The second vapor-liquid separator (13) is located on one side of the throttling assembly along the axial direction and between the throttling assembly and the evaporator (15) along the refrigerant flow path; The subcooling component, arranged in a horizontal radial direction alongside the throttling component, is configured to subcool the refrigerant flowing out of the first liquid outlet (2a); and The superheating component, arranged side-by-side with the throttling component in the horizontal radial direction, is configured to superheat the gaseous refrigerant flowing out of the throttling component.

4. The heat exchange device according to claim 1, characterized in that, The throttling assembly includes a first throttling element (10) and a second throttling element (12). The inlet of the first throttling element (10) is connected to the first liquid outlet (2a). The second throttling element (12) is located downstream of the first throttling element (10) along the axial direction. The outlet of the second throttling element (12) is connected to the refrigerant inlet of the evaporator (15). The heat exchange device further includes a first vapor-liquid separation section (11), which is connected along the axial direction between the outlet of the first throttling element (10) and the inlet of the second throttling element (12), and includes a first gas outlet and a first liquid outlet. The first gas outlet is connected to the outside of the housing (1), and the first liquid outlet is connected to the inlet of the second throttling element (12).

5. The heat exchange device according to claim 4, characterized in that, Also includes: A first mounting plate (26) is connected between the first layer plate (2) and the second layer plate (4), and the first mounting plate (26) is configured to fix the first throttling element (10); and The second mounting plate (34) is connected between the first layer plate (2) and the second layer plate (4), and is disposed opposite to and spaced apart from the first mounting plate (26) along the axial direction. The second mounting plate (34) is configured to fix the second throttling element (12). The first separation space of the first vapor-liquid separation section (11) is formed between the first mounting plate (26), the second mounting plate (34), the first layer plate (2), the second layer plate (4) and the housing (1).

6. The heat exchange device according to claim 5, characterized in that, The first vapor-liquid separator (11) further includes: A first vapor-liquid separator (30) is arranged vertically and intermittently opposite to and between the first layer plate (2) and the second layer plate (4). The first vapor-liquid separator (30) is connected axially between the first mounting plate (26) and the second mounting plate (34) and is located above the outlet of the first throttling element (10); and / or A first air distribution plate (29) is located along the axial direction between the first mounting plate (26) and the second mounting plate (34), and is disposed opposite to and spaced apart from the first mounting plate (26) and the second mounting plate (34). The first air distribution plate (29) is close to the outlet of the first throttling element (10) and includes a plurality of first through holes; and / or An anti-impact component (32) is located between the first mounting plate (26) and the second mounting plate (34) along the axial direction, and is disposed opposite to and spaced apart from the first mounting plate (26) and the second mounting plate (34). The anti-impact component (32) is close to the inlet of the second throttling component (12) and includes a third liquid outlet (32a). The third liquid outlet (32a) is located at the bottom of the anti-impact component (32) and communicates with the outlet of the first throttling component (10) and the inlet of the second throttling component (12).

7. The heat exchange device according to claim 6, characterized in that, The inlets of the third liquid outlet (32a) and the second throttling element (12) are offset from each other along the horizontal radial direction of the housing (1).

8. The heat exchange device according to claim 5, characterized in that, It also includes a third mounting plate (25), which is connected between the first layer plate (2) and the second layer plate (4), and is disposed opposite to and spaced apart from the first mounting plate (26) on the side of the first mounting plate (26) away from the first vapor-liquid separator (11) along the axial direction. A liquid storage space (27) is formed between the first mounting plate (26), the third mounting plate (25), the first layer plate (2), the second layer plate (4) and the housing (1), and the liquid storage space (27) is connected to the inlet of the first throttling element (10) and the first liquid outlet (2a).

9. The heat exchange device according to claim 4, characterized in that, The heat exchange device further includes a second vapor-liquid separation section (13), which is located in the third space and along the axial direction on the side of the second throttling element (12) away from the first vapor-liquid separation section (11). The second vapor-liquid separation section (13) includes a second gas outlet and a second liquid outlet. The second gas outlet is connected to the refrigerant outlet of the evaporator (15), and the second liquid outlet is connected to the refrigerant inlet of the evaporator (15).

10. The heat exchange device according to claim 9, characterized in that, Also includes: A second mounting plate (34) is connected between the first layer plate (2) and the second layer plate (4), and the second mounting plate (34) is configured to fix the second throttling element (12); and The fourth mounting plate (37) is connected between the first layer plate (2) and the second layer plate (4), and is positioned opposite to and spaced apart from the second mounting plate (34) on the side of the second mounting plate (34) that is away from the first vapor-liquid separator (11) along the axial direction; The second separation space of the second vapor-liquid separation section (13) is formed between the second mounting plate (34), the fourth mounting plate (37), the first layer plate (2), the second layer plate (4) and the housing (1).

11. The heat exchange device according to claim 10, characterized in that, The second vapor-liquid separator (13) includes: The second vapor-liquid separator (36) is arranged vertically and intermittently opposite to and between the first layer (2) and the second layer (4). The second vapor-liquid separator (36) is connected axially between the second mounting plate (34) and the fourth mounting plate (37) and is located above the outlet of the second throttling element (12); and / or The second air distribution plate (35) is located between the second mounting plate (34) and the fourth mounting plate (37) along the axial direction, and is disposed opposite to and spaced apart from the second mounting plate (34) and the fourth mounting plate (37). The second air distribution plate (35) is close to the outlet of the second throttling element (12) and includes a plurality of second through holes.

12. The heat exchange device according to any one of claims 1-11, characterized in that, It also includes a subcooling component, the subcooling component comprising: The subcooling box (21), extending along the axial direction, includes a first liquid inlet and a third liquid outlet (21a) located at opposite ends of the subcooling box (21). The first liquid inlet communicates with the first liquid outlet (2a), and the third liquid outlet (21a) communicates with the inlet of the throttling assembly. The subcooling heat exchange tube (181), which extends along the axial direction within the subcooling box (21), is configured to allow cooling water to flow through it for subcooling heat exchange with the liquid refrigerant entering the subcooling box (21).

13. The heat exchange device according to claim 12, characterized in that, It also includes a partition (5) connected between the first layer plate (2) and the second layer plate (4) and extending along the axial direction. The partition (5) includes a fourth liquid outlet (5a) that communicates with the third liquid outlet (21a) and the inlet of the throttling assembly. The partition (5) is configured to divide the third space into two subspaces, in which the throttling assembly and the subcooling assembly are located respectively.

14. The heat exchange device according to claim 13, characterized in that, The fourth liquid outlet (5a) and the third liquid outlet (21a) are arranged opposite to each other and at intervals; The heat exchange device includes a first connecting pipe (101), which connects the fourth liquid outlet (5a) and the third liquid outlet (21a).

15. The heat exchange device according to claim 13, characterized in that, The throttling assembly includes a first throttling element (10), and the heat exchange device further includes: A first mounting plate (26) is connected between the first layer plate (2) and the second layer plate (4), and the first mounting plate (26) is configured to fix the first throttling element (10); and The third mounting plate (25) is connected between the first layer plate (2) and the second layer plate (4), and is disposed opposite to and spaced apart from the first mounting plate (26). The third mounting plate (25) and the first mounting plate (26) are respectively located on both sides of the inlet of the first throttling element (10) along the axial direction. The first mounting plate (26), the third mounting plate (25), the first layer plate (2), the second layer plate (4), the partition plate (5) and the shell (1) form a liquid storage space (27), and the inlet of the first throttling device (10) is connected to the liquid storage space (27).

16. The heat exchange device according to claim 13, characterized in that, Also includes: The second vapor-liquid separator (13) is located in the third space and is located downstream of the throttling assembly along the axial direction. The second vapor-liquid separator (13) includes a second gas outlet and a second liquid outlet. The second gas outlet is connected to the refrigerant outlet of the evaporator (15), and the second liquid outlet is connected to the refrigerant inlet of the evaporator (15). and The superheating component, located within the subspace where the supercooling component is located and connected to the outside of the supercooling box (21), is configured to exchange heat with the gaseous refrigerant flowing out of the second outlet. The second gas outlet is connected to the refrigerant outlet of the evaporator (15) through the first gas channel and the second gas channel. The first gas channel and the second gas channel are located on both sides of the partition (5). The first gas channel connects the second gas outlet and the second gas channel. The second gas channel connects the first gas channel and the refrigerant outlet of the evaporator (15). The superheating component is located in the second gas channel.

17. The heat exchange device according to claim 16, characterized in that, The overheating assembly includes a plurality of overheating plates (23), which are spaced apart along the axial direction and connected to the outer wall of the undercooling box (21).

18. The heat exchange device according to claim 17, characterized in that, Two adjacent superheated plates (23) are arranged in a horizontal radial offset.

19. The heat exchange device according to claim 16, characterized in that, Also includes: The first end plate (9) is connected to the first end of the housing (1) along the axial direction near the first liquid inlet; The fourth mounting plate (37) is connected between the first layer plate (2) and the second layer plate (4), and is disposed opposite to and spaced apart from the first end plate (9) along the axial direction. The second air outlet is disposed on the fourth mounting plate (37). The first gas flow channel is formed at least partially between the fourth mounting plate (37), the partition plate (5), the first end plate (9), the first layer plate (2), the second layer plate (4), and the housing (1).

20. The heat exchange device according to claim 16, characterized in that, Also includes: The second end plate (8) is connected to the second end of the housing (1) along the axial direction near the third liquid outlet (21a); and The third mounting plate (25) is connected between the first layer plate (2) and the second layer plate (4), and is disposed opposite to and spaced apart from the refrigerant inlet and the second end plate (8) of the throttling assembly along the axial direction of the housing (1); The first gas flow channel is formed at least partially between the third mounting plate (25), the first layer plate (2), the second layer plate (4), the partition plate (5), the second end plate (8), and the housing (1).

21. The heat exchange device according to claim 16, characterized in that, It also includes a baffle plate (41) located in the second space and extending along the axial direction, the baffle plate (41) being angled to the second layer plate (4) and located on one side of the evaporator (15) along the horizontal radial direction of the housing (1), and forming at least a portion of the first gas flow channel between the baffle plate (41), the second layer plate (4) and the housing (1).

22. The heat exchange device according to claim 21, characterized in that, The evaporator (15) includes a heat exchange channel (42) formed between two adjacent rows of evaporation heat exchange tubes (151) of the evaporator (15) and extending along the horizontal radial direction. The heat exchange channel (42) connects the first gas flow channel and the second gas flow channel.

23. The heat exchange device according to claim 22, characterized in that, The heat exchange channel (42) and the second gas flow channel are connected through a third gas flow channel. A third vapor-liquid separation net (43) is provided in the third gas flow channel, and the third vapor-liquid separation net (43) is arranged in the horizontal direction.

24. The heat exchange device according to any one of claims 1-11, characterized in that, The evaporator (15) includes: A liquid distribution device (14) comprising a plurality of drip holes located at the bottom, the plurality of drip holes being connected to the refrigerant outlet of the throttling assembly; and Multiple evaporative heat exchange tubes (151) extend along the axial direction and are located below the openings of the multiple drip holes.

25. The heat exchange device according to any one of claims 1-11, characterized in that, It also includes a first water chamber assembly (46), which is disposed at the second axial end of the housing (1) and includes: The first end cap (461) includes a first cooling water inlet (48), a first cooling water outlet (49), a first chilled water inlet (50), and a first chilled water outlet (51). The first cooling water inlet (48) is connected to the inlet pipe of the condenser (3) and is arranged opposite to it along the axial direction. The first cooling water outlet (49) is connected to the outlet pipe of the condenser (3) and is arranged opposite to it along the axial direction. The first chilled water inlet (50) is connected to the inlet pipe of the evaporator (15) and is arranged opposite to it along the axial direction. The first chilled water outlet (51) is connected to the outlet pipe of the evaporator (15) and is arranged opposite to it along the axial direction. Multiple first partitions (47) are located inside the first end cover (461) and divide the internal space of the first end cover (461) into a first water zone (52), a second water zone (53), a third water zone (54) and a fourth water zone (55). The water inlet pipe in the condenser (3) is connected to the first water zone (52), the water outlet pipe in the condenser (3) is connected to the second water zone (53), the water inlet pipe in the evaporator (15) is connected to the third water zone (54), and the water outlet pipe in the evaporator (15) is connected to the fourth water zone (55).

26. The heat exchange device according to any one of claims 1-11, characterized in that, It also includes a second water chamber assembly (56), which is disposed at a first axial end of the housing (1) and includes: Second end cap (561); and The second partition plate (57) is located inside the second end cover (561) and divides the internal space of the second end cover (561) into a fifth water zone (58) and a sixth water zone (59). The fifth water zone (58) connects the inlet pipe section and the outlet pipe section in the condenser (3), and the sixth water zone (59) connects the inlet pipe section and the outlet pipe section in the evaporator (15).

27. A refrigeration system, characterized in that, include: The heat exchange device according to any one of claims 1-26; and Compressor unit.

28. The refrigeration system according to claim 27, characterized in that, The compressor device includes a primary compressor and a secondary compressor. The throttling assembly includes a first throttling element (10) and a second throttling element (12) spaced apart along the axial direction. The heat exchange device also includes a first exhaust pipe (31) and a first vapor-liquid separator (11). The first vapor-liquid separator (11) is connected along the axial direction between the first throttling element (10) and the second throttling element (12). The first exhaust pipe (31) is connected to the first outlet of the first vapor-liquid separator (11) and the pipeline between the primary compressor and the secondary compressor.

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