Plate heat exchanger assembly and air conditioning system

Abstract

The utility model discloses a plate heat exchanger assembly and air conditioning system, plate heat exchanger assembly includes: plate heat exchanger, throttler subassembly and temperature sensor. Formed with first heat exchange flow channel and second heat exchange flow channel in the plate heat exchanger, be equipped with first interface, second interface, third interface and fourth interface on the plate heat exchanger, and the throttler subassembly is located on the plate heat exchanger and includes first throttler and second throttler, and the temperature sensor's temperature measurement probe is located in the flow channel of throttler subassembly. According to the plate heat exchanger assembly of the utility model, can reduce the length of the connecting pipeline between first throttler and second throttler and plate heat exchanger, is favorable to reduce pipeline welding procedure, reduces the risk of welding leakage, can reduce the risk of pipeline vibration stress fracture, improves temperature measurement precision.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment, and in particular to a plate heat exchanger assembly and an air conditioning system. Background Technology

[0002] In related technologies, in air conditioning systems that include throttling components such as dual electronic expansion valves and plate heat exchangers, the connecting pipes between the throttling components and the plate heat exchangers are relatively long. This results in a large space occupied by the connecting pipes, as well as numerous welding processes between the pipes, increasing the risk of weld leaks. Furthermore, the long pipes are prone to vibration-induced breakage. Therefore, improvements are needed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a plate heat exchanger assembly that, by integrating both the first and second throttling devices onto the plate heat exchanger, reduces the length of the connecting pipes between the first and second throttling devices and the plate heat exchanger. This reduces the space occupied by the connecting pipes, reduces the number of welding steps, lowers the risk of weld leaks, reduces the risk of pipe vibration stress fracture, and improves pipe reliability.

[0004] This utility model also proposes an air conditioning system having the above-mentioned plate heat exchanger assembly.

[0005] A plate heat exchanger assembly according to a first aspect of the present invention includes: a plate heat exchanger having a first heat exchange channel and a second heat exchange channel formed therein, which are mutually isolated and exchange heat with each other; the plate heat exchanger having a first interface, a second interface, a third interface, and a fourth interface; one of the first interface and the second interface serving as the inlet of the first heat exchange channel and the other as the outlet of the first heat exchange channel; one of the third interface and the fourth interface serving as the inlet of the second heat exchange channel and the other as the outlet of the second heat exchange channel; and a throttling device assembly disposed in the plate heat exchanger and including a first throttling device and a second throttling device, the throttling device assembly including a first inlet / outlet, a second inlet / outlet, a third inlet / outlet, and a fourth inlet / outlet; the first inlet / outlet and the second inlet / outlet... One of the outlets serves as the inlet of the first throttle and the other as the outlet of the first throttle. The first inlet / outlet is connected to the second interface. One of the third inlet / outlet and the fourth inlet / outlet serves as the inlet of the second throttle and the other as the outlet of the second throttle. The third inlet / outlet is connected to the second interface, and the fourth inlet / outlet is connected to the third interface. A temperature sensor is also provided. A mounting hole is formed on the throttle assembly. The temperature sensor is mounted in the mounting hole and includes a temperature probe located within a flow channel of the throttle assembly.

[0006] According to the plate heat exchanger assembly of this utility model embodiment, by installing both the first and second throttling devices on the plate heat exchanger, the plate heat exchanger, the first throttling device, and the second throttling device are integrated together. This reduces the length of the connecting pipes between the first and second throttling devices and the plate heat exchanger, which is beneficial for reducing the space occupied by the connecting pipes, reducing the number of pipe welding processes, reducing the risk of weld leakage, reducing the risk of pipe vibration stress fracture, and improving pipe reliability. In addition, by installing the temperature sensor on the throttling device assembly, the installation and fixation of the temperature sensor is convenient. Furthermore, by inserting the temperature probe into the flow channel of the throttling device assembly, the temperature probe can directly contact the refrigerant flowing through the throttling device assembly, which can improve the temperature measurement accuracy.

[0007] According to some embodiments of the present invention, the temperature sensor is detachably connected to the throttle assembly.

[0008] According to some embodiments of the present invention, the temperature sensor is threadedly connected to the throttle assembly.

[0009] According to some embodiments of the present invention, the temperature sensor includes a mounting part, the temperature probe is connected to one side of the mounting part, the inner peripheral wall of the mounting hole is formed with an internal thread, the mounting part is formed with an external thread, and the external thread engages with the internal thread.

[0010] According to some embodiments of the present invention, the mounting portion includes a connecting section and a limiting cap, the connecting section having the external thread, and the limiting cap being located outside the throttle assembly.

[0011] According to some embodiments of this utility model, a sealing layer is provided between the temperature sensor and the inner peripheral wall of the mounting hole.

[0012] According to some embodiments of the present invention, the mounting hole is formed on the side of the throttle assembly opposite to the plate heat exchanger.

[0013] According to some embodiments of the present invention, the outer surface of the plate heat exchanger includes a mounting surface, the first interface, the second interface, the third interface and the fourth interface are all formed on the mounting surface, the throttle assembly is mounted on the mounting surface, and the angle between the central axis of the mounting hole and the mounting surface is γ, which is in the range of 60° < γ < 120°.

[0014] According to some embodiments of this utility model, 80° < γ < 100°.

[0015] According to some embodiments of the present invention, the third interface is connected to the flow path connection module, and at least a portion of the mounting hole is disposed opposite to the third interface.

[0016] According to some embodiments of this utility model, the central axis of the mounting hole is coaxial with the central axis of the third interface.

[0017] According to some embodiments of the present invention, the throttle assembly further includes a flow path connection module, which has a first flow channel and a second flow channel. The flow path connection module is disposed on the plate heat exchanger. One end of the first flow channel is connected to the second interface, and the other end of the first flow channel is used to connect to the piping of the air conditioning system. One end of the second flow channel is connected to the first flow channel, and the other end of the second flow channel is connected to the third interface. The mounting hole is formed in the flow path connection module.

[0018] According to some embodiments of the present invention, the mounting hole is formed on the wall of the second flow channel.

[0019] According to some embodiments of the present invention, a first throttling cavity is formed in the first flow channel, the first throttler is disposed in the flow path connection module, the first valve core of the first throttler is disposed in the first throttling cavity, and the first inlet and outlet and the second inlet and outlet are both located in the first flow channel and correspond to the two ends of the first throttling cavity respectively; a second throttling cavity is formed in the second flow channel, the second throttler is disposed in the flow path connection module, the second valve core of the second throttler is disposed in the second throttling cavity, and the third inlet and outlet and the fourth inlet and outlet are both located in the second flow channel and correspond to the two ends of the second throttling cavity respectively.

[0020] According to some embodiments of the present invention, the plate heat exchanger assembly includes a first filter, and the flow path connection module further includes a filter cavity disposed in the first flow channel. The filter cavity is formed at one end of the first throttling cavity away from the second interface. The first filter is disposed in the filter cavity, and the end of the filter cavity away from the first throttling cavity is used to communicate with the piping of the air conditioning system.

[0021] An air conditioning system according to a second aspect of the present invention includes: an indoor heat exchanger; an outdoor heat exchanger; and a compressor, wherein both the indoor heat exchanger and the outdoor heat exchanger are connected to the compressor; and a plate heat exchanger assembly according to the first aspect of the present invention, wherein the first interface is connected to the indoor heat exchanger and the fourth interface is connected to the compressor.

[0022] According to the air conditioning system of this utility model embodiment, by setting the above-mentioned plate heat exchanger assembly, the plate heat exchanger assembly integrates the plate heat exchanger, the first throttling device and the second throttling device by installing both the first throttling device and the second throttling device on the plate heat exchanger. This reduces the length of the connecting pipes between the first throttling device and the plate heat exchanger, which is beneficial to reduce the space occupied by the connecting pipes, reduce the number of pipe welding processes, reduce the risk of weld leakage, reduce the risk of pipe vibration stress fracture, and improve pipe reliability. In addition, by installing the temperature sensor on the throttling device assembly, the installation and fixation of the temperature sensor is convenient. Furthermore, by inserting the temperature probe into the flow channel of the throttling device assembly, the temperature probe can be in direct contact with the refrigerant flowing through the throttling device assembly, which can improve the temperature measurement accuracy.

[0023] According to some embodiments of the present invention, the air conditioning system further includes a four-way valve, which has a first valve port, a second valve port, a third valve port and a fourth valve port. The first valve port is connected to the exhaust port of the compressor, the second valve port is connected to the indoor heat exchanger, the third valve port is connected to both the return port of the compressor and the fourth interface, and the fourth valve port is connected to the outdoor heat exchanger.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a perspective view of a plate heat exchanger assembly according to some embodiments of the present utility model;

[0027] Figure 2 yes Figure 1 A top view of the plate heat exchanger assembly in the image;

[0028] Figure 3 It is along Figure 2 Cross-sectional view of line AA in the middle;

[0029] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0030] Figure 5 This is a schematic diagram illustrating the working principle of a plate heat exchanger assembly according to some embodiments of the present invention;

[0031] Figure 6 This is a schematic diagram illustrating the working principle of an air conditioning system according to some embodiments of the present invention.

[0032] Figure label:

[0033] 100. Air conditioning system;

[0034] 1. Plate heat exchanger assembly;

[0035] 11. Plate heat exchanger; 110. Mounting surface; 111. First interface; 112. Second interface; 113. Third interface; 114. Fourth interface; 117. First end; 118. Second end;

[0036] 12. First throttle; 120. First inlet / outlet; 121. Second inlet / outlet; 122. First fastener;

[0037] 13. Second throttle; 131. Third inlet / outlet; 132. Fourth inlet / outlet; 133. Second fastener;

[0038] 14. Flow path connection module; 140. Second flow channel; 141. First flow path connection module; 142. Second flow path connection module; 143. Third flow path connection module; 144. Mounting hole; 145. Internal thread;

[0039] 15. Temperature sensor; 151. Mounting part; 152. Limit cap; 153. Connecting section; 154. External thread; 155. Temperature probe; 16. Second filter; 17. First filter;

[0040] 2. Indoor heat exchanger; 3. Outdoor heat exchanger; 4. Compressor; 41. Exhaust port; 42. Return port; 5. Four-way valve; 51. First valve port; 52. Second valve port; 53. Third valve port; 54. Fourth valve port. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] The following is for reference. Figures 1-6 Describes a plate heat exchanger assembly 1 according to an embodiment of the present utility model.

[0043] According to a first aspect of the present invention, a plate heat exchanger assembly 1 includes: a plate heat exchanger 11, a throttle assembly, and a temperature sensor 15.

[0044] The plate heat exchanger 11 has a first heat exchange channel and a second heat exchange channel that are isolated from each other but exchange heat with each other. The plate heat exchanger 11 is provided with a first port 111, a second port 112, a third port 113, and a fourth port 114. One of the first port 111 and the second port 112 serves as the inlet of the first heat exchange channel, and the other of the first port 111 and the second port 112 serves as the outlet of the first heat exchange channel. One of the third port 113 and the fourth port 114 serves as the inlet of the second heat exchange channel, and the other of the third port 113 and the fourth port 114 serves as the outlet of the second heat exchange channel.

[0045] The throttling device assembly includes a first inlet / outlet 120 and a second inlet / outlet 121. One of the first inlet / outlet 120 and the second inlet / outlet 121 serves as the inlet of the first throttling device 12, and the other of the first inlet / outlet 120 and the second inlet / outlet 121 serves as the outlet of the first throttling device 12. The first inlet / outlet 120 is connected to the second interface 112, thereby allowing refrigerant flowing through the first heat exchange channel of the plate heat exchanger 11 to flow into the first throttling device 12, or allowing refrigerant flowing through the first throttling device 12 to flow into the first heat exchange channel of the plate heat exchanger 11.

[0046] The throttling device assembly includes a third inlet / outlet 131 and a fourth inlet / outlet 132. One of the third inlet / outlet 131 and the fourth inlet / outlet 132 serves as the inlet of the second throttling device 13, and the other of the third inlet / outlet 131 and the fourth inlet / outlet 132 serves as the outlet of the second throttling device 13. The third inlet / outlet 131 is connected to the second interface 112, allowing refrigerant flowing through the first heat exchange channel of the plate heat exchanger 11 to flow into the second throttling device 13. The fourth inlet / outlet 132 is connected to the third interface 113, allowing refrigerant flowing through the second throttling device 13 to flow into the second heat exchange channel of the plate heat exchanger 11.

[0047] By installing both the first throttling device 12 and the second throttling device 13 on the plate heat exchanger 11, the plate heat exchanger 11, the first throttling device 12, and the second throttling device 13 are integrated together. This reduces the length of the connecting pipes between the first throttling device 12 and the second throttling device 13 and the plate heat exchanger 11. This helps to reduce the space occupied by the connecting pipes, reduce the number of welding processes, reduce the risk of weld leakage, reduce the risk of pipe vibration stress fracture, and improve pipe reliability. Furthermore, it allows for a more compact structure of the plate heat exchanger assembly 1, reducing the space occupied by the plate heat exchanger assembly 1. For example, the first throttling device 12 is fixedly connected to the plate heat exchanger 11 by fasteners, and the second throttling device 13 is fixedly connected to the plate heat exchanger 11 by fasteners.

[0048] By forming a first heat exchange channel and a second heat exchange channel that are mutually isolated and exchange heat with each other in the plate heat exchanger 11, two refrigerants of different temperatures can flow through the plate heat exchanger 11 at the same time. The two refrigerants of different temperatures can exchange heat with each other, and the direction of refrigerant flow can be changed according to whether the air conditioning system 100 is in heating mode or cooling mode.

[0049] For example, refer to Figure 5 and Figure 6 , Figure 5 and Figure 6The dashed arrows indicate the direction of refrigerant flow when the air conditioning system 100 is in heating mode. After the refrigerant is discharged from the exhaust port 41 of the compressor 4, it flows through the indoor heat exchanger 2. The refrigerant flowing out of the indoor heat exchanger 2 enters the first heat exchange channel of the plate heat exchanger 11 through the first interface 111. After exchanging temperature with the refrigerant in the second heat exchange channel in the first heat exchange channel, it flows out of the plate heat exchanger 11 through the second interface 112. The refrigerant flowing out of the plate heat exchanger 11 from the second port 112 is divided into two paths. One path enters the second throttling device 13 through the third inlet / outlet 131. After being throttled by the second throttling device 13, it leaves the second throttling device 13 through the fourth inlet / outlet 132. At this time, the refrigerant temperature is reduced due to the throttling effect of the second throttling device 13. It then enters the second heat exchange channel of the plate heat exchanger 11 through the third port 113. The temperature of the refrigerant in the second heat exchange channel is lower than that of the refrigerant in the first heat exchange channel. The refrigerant in the first heat exchange channel heats up the refrigerant in the second heat exchange channel. Then it flows out of the plate heat exchanger 11 through the fourth port 114 and then flows into the compressor 4. The other path of refrigerant enters the first throttling device 12 through the first inlet / outlet 120. After being throttled by the first throttling device 12, it flows out of the first throttling device 12 through the second inlet / outlet 121. Then it flows through the outdoor heat exchanger 3 and then flows into the compressor 4 through the return port 42 of the compressor 4.

[0050] For example, when the air conditioning system 100 is in heating mode, by raising the temperature of the refrigerant in the first heat exchange channel to the refrigerant in the second heat exchange channel, the temperature of the refrigerant entering the compressor 4 can be increased, which can prevent liquid slugging, ensure the efficient operation of the compressor 4, and also play a certain role in replenishing gas and increasing enthalpy for the compressor 4.

[0051] For example, refer to Figure 5 and Figure 6 , Figure 5 and Figure 6The solid arrows indicate the refrigerant flow direction when the air conditioning system 100 is in cooling mode. After being discharged from the compressor 4, the refrigerant flows through the outdoor heat exchanger 3. The refrigerant exiting the outdoor heat exchanger 3 enters the first throttling device 12 through the second inlet / outlet 121. After being throttled by the first throttling device 12, it exits through the first inlet / outlet 120. The refrigerant exiting the first throttling device 12 splits into two paths. One path enters the second throttling device 13 through the third inlet / outlet 131. After being throttled by the second throttling device 13, it exits through the fourth inlet / outlet 132. At this point, the refrigerant temperature decreases due to the throttling effect of the second throttling device 13, and it enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that in the first heat exchange channel. One refrigerant cools the refrigerant in the first heat exchange channel, then leaves the plate heat exchanger 11 through the fourth port 114 and finally enters the compressor 4; the other refrigerant flows into the first heat exchange channel of the plate heat exchanger 11 through the second port 112, cools the refrigerant in the second heat exchange channel, then leaves the plate heat exchanger 11 through the first port 111, and then enters the indoor heat exchanger 2, flows through the indoor heat exchanger 2 and enters the compressor 4 through the return port 42 of the compressor 4.

[0052] When the air conditioning system 100 is in cooling mode, the refrigerant in the first heat exchange channel is cooled by the refrigerant in the second heat exchange channel. This increases the subcooling of the refrigerant in the first heat exchange channel, lowers the temperature of the refrigerant in the first heat exchange channel, and ultimately makes the temperature of the refrigerant entering the indoor heat exchanger 2 even lower, thereby improving the heat exchange performance of the indoor heat exchanger 2 and enhancing the temperature regulation capability of the air conditioning system 100.

[0053] Furthermore, a mounting hole 144 is formed on the throttle assembly, which communicates with the flow channel inside the throttle assembly. The temperature sensor 15 is mounted in the mounting hole 144. Mounting the temperature sensor 15 on the throttle assembly facilitates its installation and fixation. For example, the temperature sensor 15 can be used to detect the refrigerant temperature after throttling by the first throttle 12, and the temperature sensor 15 can be used to detect the refrigerant temperature after throttling by the second throttle 13.

[0054] The temperature sensor 15 includes a temperature probe 155, which is located within the flow channel of the throttle assembly. When the temperature sensor 15 is installed on the throttle assembly, the temperature probe 155 can be inserted into the throttle assembly through the mounting hole 144, and positioned within the flow channel of the throttle assembly. This allows the temperature probe 155 to directly contact the refrigerant within the throttle assembly as it flows through the flow channel, thereby improving temperature measurement accuracy.

[0055] According to the plate heat exchanger assembly 1 of this utility model embodiment, by installing both the first throttling device 12 and the second throttling device 13 on the plate heat exchanger 11, the plate heat exchanger 11, the first throttling device 12, and the second throttling device 13 are integrated together. This reduces the length of the connecting pipes between the first throttling device 12 and the second throttling device 13 and the plate heat exchanger 11, which helps to reduce the space occupied by the connecting pipes, reduces the number of pipe welding processes, reduces the risk of weld leakage, reduces the risk of pipe vibration stress fracture, and improves pipe reliability. In addition, by installing the temperature sensor 15 on the throttling device assembly, the installation and fixation of the temperature sensor 15 is convenient. Furthermore, by inserting the temperature probe 155 into the flow channel of the throttling device assembly, the temperature probe 155 can be in direct contact with the refrigerant flowing through the throttling device assembly, which can improve the temperature measurement accuracy.

[0056] According to some embodiments of this utility model, refer to Figure 3 and Figure 4 The temperature sensor 15 is detachably connected to the throttle assembly. This detachable connection facilitates the installation, removal, and maintenance of the temperature sensor 15.

[0057] According to some embodiments of this utility model, refer to Figure 3 and Figure 4 The temperature sensor 15 is threadedly connected to the throttle assembly. This threaded connection allows for easy disassembly and reassembly of the temperature sensor 15. For example, the temperature sensor 15 can be inserted into the mounting hole 144 and rotated to screw it into the throttle assembly. When disassembly is needed, the temperature sensor 15 can be unscrewed. This connection method is simple and easy to operate, and the threaded connection improves the airtightness of the connection between the temperature sensor 15 and the throttle assembly to some extent. Furthermore, this connection method allows the temperature sensor 15 to be more reliably and stably fixed to the throttle assembly.

[0058] According to some embodiments of this utility model, refer to Figure 3 and Figure 4 The temperature sensor 15 includes a mounting portion 151, and a temperature probe 155 is connected to one side of the mounting portion 151. An internal thread 145 is formed on the inner peripheral wall of the mounting hole 144, and an external thread 154 is formed on the mounting portion 151. The external thread 154 engages with the internal thread 145. By including the mounting portion 151 in the temperature sensor 15, and providing an external thread 154 on the mounting portion 151 and an internal thread 145 on the inner peripheral wall of the mounting hole 144, the threaded connection between the mounting portion 151 and the mounting hole 144 facilitates the threaded connection and fixation of the temperature sensor 15 to the throttle assembly.

[0059] According to some embodiments of this utility model, refer to Figure 3 and Figure 4 The mounting portion 151 includes a connecting section 153 and a limiting cap 152. The connecting section 153 has an external thread 154, and the limiting cap 152 is located outside the throttle assembly. By configuring the mounting portion 151 to include the connecting section 153 and the limiting cap 152, with the connecting section 153 threadedly connected to the mounting hole 144 and the limiting cap 152 located outside the throttle assembly, the temperature sensor 15 can be limited, preventing it from being completely screwed into the throttle assembly and thus making it difficult to install or remove. In addition, when installing or removing the temperature sensor 15, the limiting cap 152 can be screwed in or out to allow the temperature sensor 15 to be screwed in or out.

[0060] According to some embodiments of this utility model, refer to Figure 3 and Figure 4 A sealing layer is provided between the temperature sensor 15 and the inner peripheral wall of the mounting hole 144. For example, the sealing layer can be provided between the mounting portion 151 and the inner peripheral wall of the mounting hole 144. When the mounting portion 151 includes the connecting section 153, the sealing layer can be provided between the connecting section 153 and the inner peripheral wall of the mounting hole 144. By providing a sealing layer between the temperature sensor 15 and the inner peripheral wall of the mounting hole 144, the airtightness of the assembly between the temperature sensor 15 and the inner peripheral wall of the mounting hole 144 can be further improved.

[0061] According to some embodiments of this utility model, refer to Figures 1-3 Mounting hole 144 is formed on the side of the throttle assembly away from the plate heat exchanger 11. By setting the mounting hole 144 for mounting temperature sensor 15 on the side of the throttle assembly away from the plate heat exchanger 11, the space on the side of the throttle assembly away from the plate heat exchanger 11 can be fully utilized, providing sufficient operating space for the installation and removal of temperature sensor 15, making the installation and removal of temperature sensor 15 easier; and, it can make the component arrangement of plate heat exchanger assembly 1 more reasonable and the overall structure more compact.

[0062] According to some embodiments of this utility model, refer to Figures 1-3The outer surface of the plate heat exchanger 11 includes a mounting surface 110. A first interface 111, a second interface 112, a third interface 113, and a fourth interface 114 are all formed on the mounting surface 110. A throttling device assembly is mounted on the mounting surface 110. The angle between the central axis f of the mounting hole 144 and the mounting surface 110 is γ, ranging from 60° to γ ​​to 120°. By mounting the throttling device assembly on the mounting surface 110 of the plate heat exchanger 11, the mounting surface 110 has a large mounting area, facilitating the installation and fixation of the throttling device assembly. Furthermore, by setting the angle γ between the central axis f of the mounting hole 144 and the mounting surface 110 to 60° to γ ​​to 120°, a large angle can be achieved between the central axis f of the mounting hole 144 and the mounting surface 110, facilitating the installation and removal of the temperature sensor 15.

[0063] For example, the angle γ between the central axis f of the mounting hole 144 and the mounting surface 110 can be 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, etc.

[0064] According to some embodiments of this utility model, 80° < γ < 100°. By setting the angle γ between the central axis f of the mounting hole 144 and the mounting surface 110 to 80° < γ < 100°, the central axis f of the mounting hole 144 and the mounting surface 110 can be set to a near-perpendicular angle, further facilitating the installation and removal of the temperature sensor 15.

[0065] According to some embodiments of this utility model, refer to Figures 1-4 The third interface 113 is connected to the expansion joint assembly, and at least a portion of the mounting hole 144 is positioned opposite to the third interface 113. The mounting hole 144 being positioned opposite to the third interface 113 can be partially or entirely opposite. By connecting the third interface 113 to the expansion joint assembly, refrigerant flowing into the expansion joint assembly can flow through the third interface 113 into the second heat exchange channel of the plate heat exchanger 11. Furthermore, by positioning at least a portion of the mounting hole 144 opposite to the third interface 113, the impact force of the refrigerant flow on the temperature probe 155 can be reduced, and the overall layout of the temperature sensor 15 and the expansion joint assembly can be made more compact.

[0066] According to some embodiments of this utility model, refer to Figures 1-4The central axis of the mounting hole 144 is coaxial with the central axis of the third interface 113. By making the central axis of the mounting hole 144 coaxial with the central axis of the third interface 113, the temperature sensor 15 can be arranged approximately perpendicular to the mounting surface 110 of the plate heat exchanger 11, and the central axis of the temperature sensor 15 and the third interface 113 can be approximately coincident. This achieves a high degree of spatial integration between the temperature sensor 15 and the throttling device assembly, resulting in a clear structure and low manufacturing difficulty.

[0067] According to some embodiments of this utility model, refer to Figures 1-4 The throttle assembly also includes a flow path connection module 14, which has a first flow channel and a second flow channel 140. The flow path connection module 14 is disposed on the plate heat exchanger 11. One end of the first flow channel is connected to the second interface 112, and the other end of the first flow channel is used to connect to the piping of the air conditioning system 100. One end of the second flow channel 140 is connected to the first flow channel, and the other end of the second flow channel 140 is connected to the third interface 113. A mounting hole 144 is formed in the flow path connection module 14.

[0068] For example, when the air conditioning system 100 is in heating mode, the refrigerant discharged from the compressor 4 flows through the indoor heat exchanger 2. The refrigerant enters the first heat exchange channel of the plate heat exchanger 11 through the first interface 111 from the indoor heat exchanger 2. After exchanging temperature with the refrigerant in the second heat exchange channel in the first heat exchange channel, it leaves the plate heat exchanger 11 through the second interface 112 and enters the first channel of the flow path connection module 14. The refrigerant flowing into the first channel is divided into two paths. One path flows into the second channel 140 and enters the second throttling device 13 through the third inlet / outlet 131. After being throttled by the second throttling device 13, it leaves the second throttling device 13 through the fourth inlet / outlet 132 and then enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that in the first heat exchange channel, and the heat exchange medium in the first heat exchange channel heats the heat exchange medium in the second heat exchange channel. The refrigerant flowing through the second heat exchange channel then leaves the plate heat exchanger 11 through the fourth port 114 and finally enters the compressor 4. Another refrigerant enters the first throttling device 12 through the first inlet and outlet 120, and after being throttled by the first throttling device 12, leaves the first throttling device 12 through the second inlet and outlet 121, and then flows into the outdoor heat exchanger 3, and after flowing through the outdoor heat exchanger 3, flows into the compressor 4.

[0069] For example, when the air conditioning system 100 is in cooling mode, the refrigerant discharged from the compressor 4 flows through the outdoor heat exchanger 3. After flowing out of the outdoor heat exchanger 3, the refrigerant flows into the first flow channel and enters the first throttling device 12 through the second inlet / outlet 121. After being throttled by the first throttling device 12, the refrigerant leaves the first throttling device 12 through the first inlet / outlet 120. The refrigerant after being throttled by the first throttling device 12 is divided into two paths. One path flows into the second flow channel 140 and enters the second throttling device 13 through the third inlet / outlet 131. After being throttled by the second throttling device 13, the refrigerant leaves the second throttling device 13 through the fourth inlet / outlet 132, and then enters the second heat exchange flow channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange flow channel is lower than that of the refrigerant in the first heat exchange flow channel, and the refrigerant in the second heat exchange flow channel cools the refrigerant in the first heat exchange flow channel. The refrigerant flowing through the second heat exchange channel then exits the plate heat exchanger 11 through the fourth port 114 and finally enters the compressor 4. Another stream of refrigerant flows into the first heat exchange channel of the plate heat exchanger 11 through the second port 112, then exits the plate heat exchanger 11 through the first port 111 and finally enters the indoor heat exchanger 2. After flowing through the indoor heat exchanger 2, it enters the compressor 4 through the return port 42 of the compressor 4.

[0070] By including the flow path connection module 14 in the throttle assembly and installing the flow path connection module 14 on the plate heat exchanger 11, the connection between various interfaces and components is realized through the flow path connection module 14. Compared with the pipeline connection method used in related technologies, the pipeline complexity and design difficulty can be reduced. By installing the flow path connection module 14 on the plate heat exchanger 11 and integrating the flow path connection module 14 on the plate heat exchanger 11, relevant personnel can concentrate on the plate heat exchanger assembly 1 to maintain and repair the flow path connection module 14, making the maintenance or repair of the flow path connection module 14 more convenient.

[0071] Furthermore, by forming the mounting hole 144 on the flow path connection module 14, it is convenient to install and fix the temperature sensor 15 on the flow path connection module 14, and it can avoid making additional holes on the first throttle 12 and the second throttle 13, thereby reducing the impact of additional holes on the performance of the first throttle 12 and the second throttle 13.

[0072] According to some embodiments of this utility model, refer to Figures 1-4 Mounting hole 144 is formed on the wall of second flow channel 140. By setting mounting hole 144 on the wall of second flow channel 140, it is convenient to open hole in flow path connection module 14, and it can also enable temperature sensor 15 to detect the temperature of refrigerant flowing through first throttle 12.

[0073] In other embodiments, temperature sensor 15 may also be used to detect the temperature of the refrigerant flowing through second throttle 13.

[0074] According to some embodiments of this utility model, refer to Figures 1-4 A first throttling cavity is formed in the first flow channel. A first throttling device 12 is disposed in the flow path connection module 14. The first valve core of the first throttling device 12 is disposed in the first throttling cavity. The first inlet / outlet 120 and the second inlet / outlet 121 are both located in the first flow channel and correspond to the two ends of the first throttling cavity, respectively. A second throttling cavity is formed in the second flow channel 140. A second throttling device 13 is disposed in the flow path connection module 14. The second valve core of the second throttling device 13 is disposed in the second throttling cavity. The third inlet / outlet 131 and the fourth inlet / outlet 132 are both located in the second flow channel 140 and correspond to the two ends of the second throttling cavity, respectively.

[0075] For example, when the air conditioning system 100 is in heating mode, the refrigerant discharged from the compressor 4 flows through the indoor heat exchanger 2. The refrigerant enters the first heat exchange channel of the plate heat exchanger 11 from the indoor heat exchanger 2 through the first interface 111. In the first heat exchange channel, it exchanges temperature with the refrigerant in the second heat exchange channel, and then leaves the plate heat exchanger 11 through the second interface 112 and enters the first channel of the flow path connection module 14. The refrigerant flowing into the first channel is divided into two paths. One path flows into the second channel 140 and enters the second throttling chamber through the third inlet / outlet 131. After being throttled in the second throttling chamber, it leaves the second throttling chamber through the fourth inlet / outlet 132 and then enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that in the first heat exchange channel, and the heat exchange medium in the first heat exchange channel heats the heat exchange medium in the second heat exchange channel. The refrigerant flowing through the second heat exchange channel then leaves the plate heat exchanger 11 through the fourth port 114 and finally enters the compressor 4. Another refrigerant enters the first throttling chamber through the first inlet and outlet 120, and after being throttled in the first throttling chamber, leaves the first throttling chamber through the second inlet and outlet 121, and then flows into the outdoor heat exchanger 3. After flowing through the outdoor heat exchanger 3, it flows into the compressor 4.

[0076] For example, when the air conditioning system 100 is in cooling mode, the refrigerant discharged from the compressor 4 flows through the outdoor heat exchanger 3. After flowing out of the outdoor heat exchanger 3, the refrigerant enters the first flow channel and then enters the first throttling chamber through the second inlet / outlet 121. After being throttled in the first throttling chamber, it exits through the first inlet / outlet 120. The refrigerant after being throttled in the first throttling chamber is divided into two paths. One path flows into the second flow channel 140 and enters the second throttling chamber through the third inlet / outlet 131. After being throttled in the second throttling chamber, it exits through the fourth inlet / outlet 132 and then enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that in the first heat exchange channel, thus cooling the refrigerant in the first heat exchange channel. The refrigerant flowing through the second heat exchange channel then exits the plate heat exchanger 11 through the fourth interface 114 and finally enters the compressor 4. Another refrigerant flows into the first heat exchange channel of the plate heat exchanger 11 through the second interface 112, then leaves the plate heat exchanger 11 through the first interface 111, and finally enters the indoor heat exchanger 2. After passing through the indoor heat exchanger 2, it flows into the compressor 4 through the return port 42 of the compressor 4.

[0077] By placing the first valve core of the first throttle 12 in the first throttle cavity of the flow path connection module 14 and placing the second valve core of the second throttle 13 in the second throttle cavity of the flow path connection module 14, the assembly of the first throttle 12 and the second throttle 13 with the flow path connection module 14 can be made more compact, reducing the space occupied.

[0078] According to some embodiments of this utility model, refer to Figures 1-4 The plate heat exchanger assembly 1 includes a first filter 17, and the flow path connection module 14 further includes a filter chamber disposed within the first flow channel. The filter chamber is formed at the end of the first throttling cavity away from the second interface 112. The first filter 17 is disposed within the filter chamber, and the end of the filter chamber away from the first throttling cavity is used to connect to the piping of the air conditioning system 100. In this way, when the refrigerant flows through the filter chamber of the first flow channel, it can be filtered by the first filter 17.

[0079] For example, when the air conditioning system 100 is in heating mode, the refrigerant enters the first heat exchange channel of the plate heat exchanger 11 through the first interface 111. After exchanging temperature with the refrigerant in the second heat exchange channel in the first heat exchange channel, it leaves the plate heat exchanger 11 through the second interface 112 and enters the first channel of the flow path connection module 14. The refrigerant flowing into the first channel is divided into two paths. One path flows into the second channel 140 and enters the second throttling chamber through the third inlet / outlet 131. After being throttled in the second throttling chamber, it leaves the second throttling chamber through the fourth inlet / outlet 132 and then enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that of the refrigerant in the first heat exchange channel, and the heat exchange medium in the first heat exchange channel heats the heat exchange medium in the second heat exchange channel. The refrigerant flowing through the second heat exchange channel then leaves the plate heat exchanger 11 through the fourth interface 114 and finally enters the compressor 4. Another refrigerant enters the first throttling chamber through the first inlet / outlet 120. After being throttled in the first throttling chamber, it leaves the first throttling chamber through the second inlet / outlet 121. Then it flows through the filter chamber and is filtered by the first filter 17. After filtration, it flows into the outdoor heat exchanger 3 and then into the compressor 4.

[0080] For example, when the air conditioning system 100 is in cooling mode, the refrigerant discharged from the compressor 4 flows through the outdoor heat exchanger 3. After flowing out of the outdoor heat exchanger 3, the refrigerant flows into the first flow channel. The refrigerant flowing into the first flow channel first flows through the filter chamber, is filtered by the first filter 17, and then enters the first throttling chamber through the second inlet and outlet 121. After being throttled by the first throttling chamber, it leaves the first throttling chamber through the first inlet and outlet 120. The refrigerant after being throttled by the first throttling chamber is divided into two paths. One path flows into the second flow channel 140 and enters the second throttling chamber through the third inlet and outlet 131. After being throttled by the second throttling chamber, it leaves the second throttling chamber through the fourth inlet and outlet 132, and then enters the second heat exchange flow channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange flow channel is lower than that of the refrigerant in the first heat exchange flow channel, and the refrigerant in the second heat exchange flow channel cools the refrigerant in the first heat exchange flow channel. The refrigerant flowing through the second heat exchange channel then exits the plate heat exchanger 11 through the fourth port 114 and finally enters the compressor 4. Another stream of refrigerant flows into the first heat exchange channel of the plate heat exchanger 11 through the second port 112, then exits the plate heat exchanger 11 through the first port 111 and finally enters the indoor heat exchanger 2. After flowing through the indoor heat exchanger 2, it enters the compressor 4 through the return port 42 of the compressor 4.

[0081] According to some embodiments of this utility model, refer to Figures 1-4The throttle valve assembly also includes a flow path connection module 14, which is installed on the plate heat exchanger 11. At least one pair of the following connections are made through the flow path connection module 14: the second interface 112 is connected to the first inlet / outlet 120, the second interface 112 is connected to the third inlet / outlet 131, and the third interface 113 is connected to the fourth inlet / outlet 132. By including the flow path connection module 14 in the plate heat exchanger assembly 1, the connection between various interfaces and components is realized through the flow path connection module 14. Compared with the pipeline connection method used in related technologies, the pipeline complexity and design difficulty can be reduced. By installing the flow path connection module 14 on the plate heat exchanger 11 and integrating the flow path connection module 14 onto the plate heat exchanger 11, relevant personnel can concentrate on the plate heat exchanger assembly 11 to maintain and repair the flow path connection module 14, making maintenance and repair of the flow path connection module 14 more convenient.

[0082] For example, the flow path connection module 14 can be used to connect the second interface 112 with the first inlet / outlet 120; for example, the flow path connection module 14 can be used to connect the second interface 112 with the third inlet / outlet 131; for example, the flow path connection module 14 can be used to connect the third interface 113 with the fourth inlet / outlet 132.

[0083] For example, the flow path connection module 14 can be used to connect the second interface 112 with the first inlet / outlet 120, and the second interface 112 with the third inlet / outlet 131; for example, the flow path connection module 14 can be used to connect the second interface 112 with the first inlet / outlet 120, and the third interface 113 with the fourth inlet / outlet 132; for example, the flow path connection module 14 can be used to connect the second interface 112 with the third inlet / outlet 131, and the third interface 113 with the fourth inlet / outlet 132.

[0084] For example, the flow path connection module 14 can be used to connect the second interface 112 with the first inlet / outlet 120, the second interface 112 with the third inlet / outlet 131, and the third interface 113 with the fourth inlet / outlet 132.

[0085] It should be noted that when one or two pairs of interfaces 112 and 120, 131 and 3, and 132 are connected through flow path connection module 14, other interfaces can be connected through other means such as pipelines.

[0086] Optionally, the flow path connection module 14 can be block-shaped, and the flow path connection module 14 can form at least one connecting flow channel. When multiple connecting flow channels are formed in the flow path connection module 14, at least some of the multiple connecting flow channels can be isolated from each other. Different interfaces or different components can be connected through the connecting flow channels in the flow path connection module 14.

[0087] According to some embodiments of this utility model, refer to Figures 1-5 At least a portion of the flow path connection module 14 is located between the first throttle 12 and the second throttle 13. By positioning at least a portion of the flow path connection module 14 between the first throttle 12 and the second throttle 13, the space between the first throttle 12 and the second throttle 13 can be fully utilized, resulting in a compact overall structure for the plate heat exchanger assembly 1.

[0088] The mounting hole 144 can be formed on the flow path connection module 14. By forming the mounting hole 144 on the flow path connection module 14, it is convenient to install and fix the temperature sensor 15 on the flow path connection module 14, and it can avoid the need to open additional holes on the first throttle 12 and the second throttle 13, thereby reducing the impact of additional holes on the performance of the first throttle 12 and the second throttle 13.

[0089] According to some embodiments of this utility model, refer to Figures 1-5 The first inlet / outlet 120, the third inlet / outlet 131, the fourth inlet / outlet 132, the second interface 112, and the third interface 113 are all connected to the flow path connection module 14. By connecting the first inlet / outlet 120, the third inlet / outlet 131, the fourth inlet / outlet 132, the second interface 112, and the third interface 113 to the flow path connection module 14, it is convenient for the flow path connection module 14 to connect at least one pair of the following: the second interface 112 to the first inlet / outlet 120, the second interface 112 to the third inlet / outlet 131, and the third interface 113 to the fourth inlet / outlet 132.

[0090] According to some embodiments of this utility model, refer to Figures 1-5 The flow path connection module 14 includes a first flow path connection module 14114 and a second flow path connection module 14214. The second interface 112, the first inlet / outlet 120, and the third inlet / outlet 131 are all connected to the first flow path connection module 14114. The first flow path connection module 14114 is used to connect the second interface 112 with the first inlet / outlet 120 and to connect the second interface 112 with the third inlet / outlet 131. The fourth inlet / outlet 132 and the third interface 113 are all connected to the second flow path connection module 14214. The second flow path connection module 14214 is used to connect the fourth inlet / outlet 132 with the third interface 113. By including a first flow path connection module 14114 and a second flow path connection module 14214 in the flow path connection module 14, the first flow path connection module 14114 connects and communicates with the second interface 112, the first inlet / outlet 120 and the third inlet / outlet 131, and the second flow path connection module 14214 connects and communicates with the fourth inlet / outlet 132 and the third interface 113. This allows the various components to be connected and enables the refrigerant to flow in the flow path connection module 14, thus achieving the circulation of the refrigerant.

[0091] The mounting hole 144 can be formed on the second flow path connection module 14214, and the temperature sensor 15 can be mounted and fixed on the second flow path connection module 14214. In this way, the temperature sensor 15 is used to detect the temperature of the refrigerant flowing through the first throttle 12 and / or the second throttle 13.

[0092] For example, when the air conditioning system 100 is in heating mode, the refrigerant discharged from the compressor 4 flows through the indoor heat exchanger 2. The refrigerant from the indoor heat exchanger 2 enters the first heat exchange channel of the plate heat exchanger 11 through the first interface 111. After exchanging temperature with the refrigerant in the second heat exchange channel in the first heat exchange channel, it exits the plate heat exchanger 11 through the second interface 112 and enters the first flow path connection module 14114. The refrigerant is divided into two paths in the first flow path connection module 14114. One path, after flowing through the first flow path connection module 14114, enters the second throttling device 13 through the third inlet / outlet 131. After being throttled by the second throttling device 13, it exits the second throttling device 13 through the fourth inlet / outlet 132 and enters the second flow path connection module 14214. The refrigerant flowing through the second flow path connection module 14214 enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that in the first heat exchange channel, and the heat exchange medium in the first heat exchange channel heats the heat exchange medium in the second heat exchange channel. The refrigerant flowing through the second heat exchange channel then leaves the plate heat exchanger 11 through the fourth interface 114 and finally enters the compressor 4; another refrigerant enters the first throttling device 12 through the first flow path connection module 14114 and the first inlet and outlet 120, and after being throttled by the first throttling device 12, leaves the first throttling device 12 through the second inlet and outlet 121, and then flows into the outdoor heat exchanger 3, and after flowing through the outdoor heat exchanger 3, flows into the compressor 4.

[0093] For example, when the air conditioning system 100 is in cooling mode, the refrigerant discharged from the compressor 4 flows through the outdoor heat exchanger 3. After flowing out of the outdoor heat exchanger 3, the refrigerant enters the first throttling device 12 through the second inlet / outlet 121. After being throttled by the first throttling device 12, it leaves the first throttling device 12 through the first inlet / outlet 120 and enters the first flow path connection module 14114. The refrigerant is divided into two paths in the first flow path connection module 14114. One path enters the second throttling device 13 through the first flow path connection module 14114 and the third inlet / outlet 131. After being throttled by the second throttling device 13, it leaves the second throttling device 13 through the fourth inlet / outlet 132 and enters the second flow path connection module 14214. Then, it enters the second heat exchange channel of the plate heat exchanger 11 through the third interface 113. The temperature of the refrigerant in the second heat exchange channel is lower than that of the refrigerant in the first heat exchange channel, and the refrigerant in the second heat exchange channel cools the refrigerant in the first heat exchange channel. The refrigerant flowing through the second heat exchange channel then leaves the plate heat exchanger 11 through the fourth interface 114 and finally enters the compressor 4; the other refrigerant flows into the first heat exchange channel of the plate heat exchanger 11 through the first flow path connection module 14114 and the second interface 112, then leaves the plate heat exchanger 11 through the first interface 111 and finally enters the indoor heat exchanger 2, flows through the indoor heat exchanger 2 and enters the compressor 4 through the return port 42 of the compressor 4.

[0094] For example, the first flow path connection module 14114 is a three-way flow path module. The first flow path connection module 14114 has a first flow path connection port, a second flow path connection port and a third flow path connection port. The first flow path connection port is connected to the first inlet / outlet 120, the second flow path connection port is connected to the third inlet / outlet 131, and the third flow path connection port is connected to the second interface 112.

[0095] For example, a bend is formed on the second flow path connection module 14214, and a fourth flow path connection port and a fifth flow path connection port are formed on the second flow path connection module 14214. The fourth flow path connection port is connected to the fourth inlet / outlet 132, and the fifth flow path connection port is connected to the third interface 113.

[0096] According to some embodiments of this utility model, refer to Figures 1-5At least a portion of the first flow path connection module 14114 is located between the first throttle 12 and the second throttle 13, and the second flow path connection module 14214 is located on one side of the second throttle 13. By positioning at least a portion of the first flow path connection module 14114 between the first throttle 12 and the second throttle 13, the space between the first throttle 12 and the second throttle 13 can be fully utilized, making the overall structure of the plate heat exchanger assembly 1 compact. By positioning the second flow path connection module 14214 on one side of the second throttle 13, it is easier for the second flow path connection module 14214 to connect the second throttle 13 to the plate heat exchanger 11.

[0097] According to some embodiments of this utility model, refer to Figures 1-5 The first flow path connection module 14114 and the second flow path connection module 14214 are connected as a whole. By connecting the first flow path connection module 14114 and the second flow path connection module 14214 as a whole, the plate heat exchanger assembly 1 can be made compact, and the difficulty of installing and disassembling the flow path connection module 14 can be reduced.

[0098] According to some embodiments of this utility model, refer to Figures 1-5 The first flow path connection module 14114 and the second flow path connection module 14214 are integrally formed. By making the first flow path connection module 14114 and the second flow path connection module 14214 integrally formed, the number of components of the flow path connection module 14 can be reduced, and the installation difficulty of the flow path connection module 14 can be reduced.

[0099] According to some embodiments of this utility model, refer to Figures 1-5 The plate heat exchanger assembly 1 includes a first filter 17, and the flow path connection module 14 includes a third flow path connection module 14314. The third flow path connection module 14314 is connected between the second inlet / outlet 121 and the first filter 17 to connect the second inlet / outlet 121 and the first filter 17. By including the third flow path connection module 14314 in the flow path connection module 14 and connecting the second inlet / outlet 121 and the first filter 17, compared with the pipeline connection method used in related technologies, the plate heat exchanger assembly 1 can be made more compact, reducing the difficulty of pipeline design; and the first filter 17 can also be integrated into the plate heat exchanger assembly 1, making it more convenient for relevant personnel to maintain and repair the plate heat exchanger assembly 1.

[0100] According to some embodiments of this utility model, refer to Figures 1-5The third flow path connection module 14314, the second flow path connection module 14214, and the first flow path connection module 14114 are connected as a whole. By connecting the third flow path connection module 14314, the second flow path connection module 14214, and the first flow path connection module 14114 as a whole, the plate heat exchanger assembly 1 can be made compact, and the difficulty of installing and disassembling the flow path connection module 14 can be reduced.

[0101] According to some embodiments of this utility model, refer to Figures 1-5 The third flow path connection module 14314, the second flow path connection module 14214, and the first flow path connection module 14114 are integrally formed. By integrally forming the third flow path connection module 14314, the second flow path connection module 14214, and the first flow path connection module 14114, the number of components in the flow path connection module 14 can be reduced, and the installation difficulty of the flow path connection module 14 can be reduced.

[0102] According to some embodiments of this utility model, refer to Figures 1-5 Both the first throttling device 12 and the second throttling device 13 are installed and fixed to the plate heat exchanger 11 through the flow path connection module 14. By installing and fixing both the first throttling device 12 and the second throttling device 13 to the plate heat exchanger 11 through the flow path connection module 14, the connection between the first throttling device 12 and the plate heat exchanger 11, and between the second throttling device 13 and the plate heat exchanger 11, can be made more stable. At the same time, it is also convenient for the first throttling device 12 to be connected to the flow path connection module 14, and for the second throttling device 13 to be connected to the flow path connection module 14.

[0103] According to some embodiments of this utility model, refer to Figures 1-5 At least one of the first throttle valve 12 and the second throttle valve 13 is detachably connected to the flow path connection module 14. By making at least one of the first throttle valve 12 and the second throttle valve 13 detachably connected to the flow path connection module 14, maintenance or repair of the plate heat exchanger assembly 1 becomes more convenient. For example, the first throttle valve 12 is detachably connected to the flow path connection module 14; another example is that the second throttle valve 13 is detachably connected to the flow path connection module 14; yet another example is that both the first throttle valve 12 and the flow path connection module 14 are detachably connected, and the second throttle valve 13 is also detachably connected to the flow path connection module 14.

[0104] According to some embodiments of this utility model, refer to Figures 1-5 A first fastener 122 is connected between the first throttle 12 and the flow path connection module 14. By connecting the first throttle 12 and the flow path connection module 14 with the first fastener 122, the connection between the first throttle 12 and the flow path connection module 14 can be made more stable, and it is easier for relevant personnel to maintain or repair the first throttle 12.

[0105] According to some embodiments of this utility model, refer to Figures 1-5 A second fastener 133 is connected between the second throttle 13 and the flow path connection module 14. By connecting the second throttle 13 and the flow path connection module 14 with the second fastener 133, the connection between the second throttle 13 and the flow path connection module 14 can be made more stable, and it is easier for relevant personnel to maintain or repair the second throttle 13.

[0106] According to some embodiments of this utility model, refer to Figures 1-5 At least one of the first throttle valve 12 and the second throttle valve 13 is spaced apart from the plate heat exchanger 11. When the air conditioning system 100 is operating, the first throttle valve 12 and the second throttle valve 13 will vibrate. By spaced apart at least one of the first throttle valve 12 and the second throttle valve 13 from the plate heat exchanger 11, the collision between the first throttle valve 12 or the second throttle valve 13 and the plate heat exchanger 11 can be reduced.

[0107] According to some embodiments of this utility model, refer to Figures 1-5 The plate heat exchanger assembly 1 includes a second filter 16, which is connected to the first interface 111. By including the second filter 16 in the plate heat exchanger assembly 1 and connecting it to the first interface 111, the second filter 16 can filter out impurities and contaminants in the refrigerant, reducing the risk of air conditioning system 100 failure due to pipe blockage.

[0108] For example, when the air conditioning system 100 is in cooling mode, the second filter 16 can reduce solid impurities in the refrigerant flowing from the plate heat exchanger 11 to the indoor heat exchanger 2, thereby reducing the risk of air conditioning system 100 failure due to pipe blockage.

[0109] For example, when the air conditioning system 100 is in heating mode, the second filter 16 can reduce solid impurities in the refrigerant flowing from the indoor heat exchanger 2 and into the plate heat exchanger 11, thereby reducing the risk of blockage in the flow path of the plate heat exchanger 11 leading to its failure.

[0110] According to some embodiments of this utility model, refer to Figures 1-5 The plate heat exchanger assembly 1 includes a first filter 17 connected to a second inlet / outlet 121. By including the first filter 17 in the plate heat exchanger assembly 1, the first filter 17 can filter out impurities and contaminants in the refrigerant, reducing the risk of air conditioning system 100 failure due to pipe blockage.

[0111] For example, when the air conditioning system 100 is in cooling mode, the first filter 17 can reduce solid impurities in the refrigerant flowing from the outdoor heat exchanger 3 and into the second throttle 13, thereby reducing the risk of the air conditioning system 100 failing due to blockage of the second throttle 13.

[0112] For example, when the air conditioning system 100 is in heating mode, the first filter 17 can reduce solid impurities in the refrigerant flowing out of the second throttle 13 and onto the outdoor heat exchanger 3, thereby reducing the risk of the air conditioning system 100 failing due to pipe blockage.

[0113] Reference Figure 6 An air conditioning system 100 according to a second aspect of the present invention includes: an indoor heat exchanger 2, an outdoor heat exchanger 3, a compressor 4, and a plate heat exchanger assembly 1 according to the first aspect of the present invention. The indoor heat exchanger 2 and the outdoor heat exchanger 3 are both connected to the compressor 4. A first interface 111 is connected to the indoor heat exchanger 2, and a fourth interface 114 is connected to the compressor 4.

[0114] According to the air conditioning system 100 of this utility model embodiment, by setting the above-mentioned plate heat exchanger assembly 1, the plate heat exchanger assembly 1 integrates the plate heat exchanger 11, the first throttling device 12 and the second throttling device 13 by installing both the first throttling device 12 and the second throttling device 13 on the plate heat exchanger 11. This reduces the length of the connecting pipes between the first throttling device 12 and the second throttling device 13 and the plate heat exchanger 11, which is beneficial to reduce the space occupied by the connecting pipes, reduce the pipe welding process, reduce the risk of weld leakage, reduce the risk of pipe vibration stress fracture, and improve pipe reliability. In addition, by installing the temperature sensor 15 on the throttling device assembly, the installation and fixation of the temperature sensor 15 is convenient. Furthermore, by inserting the temperature probe 155 into the flow channel of the throttling device assembly, the temperature probe 155 can be in direct contact with the refrigerant flowing through the throttling device assembly, which can improve the temperature measurement accuracy.

[0115] According to some embodiments of this utility model, refer to Figure 6 The air conditioning system 100 also includes a four-way valve 5, which has a first valve port 51, a second valve port 52, a third valve port 53, and a fourth valve port 54. The first valve port 51 is connected to the exhaust port 41 of the compressor 4, the second valve port 52 is connected to the indoor heat exchanger 2, the third valve port 53 is connected to both the return port 42 and the fourth interface 114 of the compressor 4, and the fourth valve port 54 is connected to the outdoor heat exchanger 3. By including the four-way valve 5 in the air conditioning system 100, the air conditioning system 100 can be easily switched between cooling and heating modes, and the connection between the different valve ports can be adjusted according to the cooling or heating needs.

[0116] For example, refer to Figure 6 , Figure 6 The solid arrows in the diagram indicate the direction of refrigerant flow when the air conditioning system 100 is in cooling mode. At this time, the first valve port 51 of the four-way valve 5 can be connected to the fourth valve port 54, and the second valve port 52 and the third valve port 53 can be connected. The first valve port 51 and the second valve port 52 are not connected to each other. The refrigerant discharged from the exhaust port 41 of the compressor 4 enters the four-way valve 5 through the first valve port 51, leaves the four-way valve 5 through the fourth valve port 54, and then flows into the outdoor heat exchanger 3 for heat exchange. The refrigerant flowing through the outdoor heat exchanger 3 flows into the first throttle valve 12 for throttling. After being throttled by the first throttle valve 12, the refrigerant is divided into two paths. One path of refrigerant flows through the second throttle valve 13 and the second heat exchange channel of the plate heat exchanger 11, and then flows into the compressor 4 through the return port 42 of the compressor 4. The other path of refrigerant flows through the first heat exchange channel of the plate heat exchanger 11 and the indoor heat exchanger 2, enters the four-way valve 5 through the second valve port 52, leaves the four-way valve 5 through the third valve port 53, and then flows into the compressor 4 through the return port 42 of the compressor 4.

[0117] For example, refer to Figure 6 , Figure 6 The dashed arrows indicate the refrigerant flow direction when the air conditioning system 100 is in heating mode. At this time, the first valve port 51 of the four-way valve 5 is connected to the second valve port 52, and the third valve port 53 is connected to the fourth valve port 54. The first valve port 51 and the third valve port 53 are not connected to each other. The refrigerant discharged from the exhaust port 41 of the compressor 4 enters the four-way valve 5 through the first valve port 51, then leaves the four-way valve 5 through the second valve port 52, flows into the indoor heat exchanger 2 for heat exchange, and then flows into the first heat exchange channel of the plate heat exchanger 11. The refrigerant flowing out of the first heat exchange channel is divided into two paths. One path flows through the second throttling device 13 and the second heat exchange channel of the plate heat exchanger 11, and then flows into the compressor 4 through the return port 42 of the compressor 4. The other path flows through the first throttling device 12 and the outdoor heat exchanger 3, then enters the four-way valve 5 through the fourth valve port 54, then leaves the four-way valve 5 through the third valve port 53, and flows into the compressor 4 through the return port 42 of the compressor 4.

[0118] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0119] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0120] In the description of this utility model, "multiple" means two or more.

[0121] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0122] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0123] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0124] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A plate heat exchanger assembly, characterized in that, include: A plate heat exchanger has a first heat exchange channel and a second heat exchange channel that are separated from each other and exchange heat with each other. The plate heat exchanger is provided with a first interface, a second interface, a third interface and a fourth interface. One of the first interface and the second interface serves as the inlet of the first heat exchange channel and the other serves as the outlet of the first heat exchange channel. One of the third interface and the fourth interface serves as the inlet of the second heat exchange channel and the other serves as the outlet of the second heat exchange channel. A throttling device assembly is disposed in the plate heat exchanger and includes a first throttling device and a second throttling device. The throttling device assembly includes a first inlet and outlet, a second inlet and outlet, a third inlet and outlet, and a fourth inlet and outlet. One of the first inlet and outlet and the second inlet and outlet serves as the inlet of the first throttling device and the other serves as the outlet of the first throttling device. The first inlet and outlet is connected to the second interface. One of the third inlet and outlet and the fourth inlet and outlet serves as the inlet of the second throttling device and the other serves as the outlet of the second throttling device. The fourth inlet and outlet is connected to the third interface. A temperature sensor is provided, wherein a mounting hole is formed on the throttle assembly, the temperature sensor is mounted in the mounting hole and includes a temperature probe, the temperature probe being located within a flow channel in the throttle assembly.

2. The plate heat exchanger assembly according to claim 1, characterized in that, The temperature sensor is detachably connected to the throttle assembly; and / or, the third inlet / outlet is connected to the second interface.

3. The plate heat exchanger assembly according to claim 1, characterized in that, The temperature sensor is threadedly connected to the throttle assembly.

4. The plate heat exchanger assembly according to claim 3, characterized in that, The temperature sensor includes a mounting part, the temperature probe is connected to one side of the mounting part, the inner peripheral wall of the mounting hole is formed with an internal thread, and the mounting part is formed with an external thread, the external thread engaging with the internal thread.

5. The plate heat exchanger assembly according to claim 4, characterized in that, The mounting portion includes a connecting section and a limiting cap, the connecting section having the external thread, and the limiting cap being located outside the throttle assembly.

6. The plate heat exchanger assembly according to claim 1, characterized in that, A sealing layer is provided between the temperature sensor and the inner peripheral wall of the mounting hole.

7. The plate heat exchanger assembly according to claim 1, characterized in that, The mounting hole is formed on the side of the throttle assembly opposite to the plate heat exchanger.

8. The plate heat exchanger assembly according to claim 7, characterized in that, The outer surface of the plate heat exchanger includes a mounting surface. The first interface, the second interface, the third interface, and the fourth interface are all formed on the mounting surface. The throttling device assembly is mounted on the mounting surface. The angle between the central axis of the mounting hole and the mounting surface is γ, which is in the range of 60° < γ < 120°.

9. The plate heat exchanger assembly according to claim 8, characterized in that, 80° < γ < 100°.

10. The plate heat exchanger assembly according to claim 7, characterized in that, The third interface is connected to the throttle assembly, and at least a portion of the mounting hole is disposed opposite to the third interface.

11. The plate heat exchanger assembly according to claim 10, characterized in that, The central axis of the mounting hole is coaxial with the central axis of the third interface.

12. The plate heat exchanger assembly according to any one of claims 1-11, characterized in that, The throttle assembly further includes a flow path connection module, which has a first flow channel and a second flow channel. The flow path connection module is disposed on the plate heat exchanger. One end of the first flow channel is connected to the second interface, and the other end of the first flow channel is used to connect to the piping of the air conditioning system. One end of the second flow channel is connected to the first flow channel, and the other end of the second flow channel is connected to the third interface. The mounting hole is formed in the flow path connection module.

13. The plate heat exchanger assembly according to claim 12, characterized in that, The mounting hole is formed on the wall of the second flow channel.

14. The plate heat exchanger assembly according to claim 12, characterized in that, A first throttling cavity is formed in the first flow channel. The first throttler is disposed in the flow path connection module. The first valve core of the first throttler is disposed in the first throttling cavity. The first inlet and outlet and the second inlet and outlet are both located in the first flow channel and correspond to the two ends of the first throttling cavity, respectively. A second throttling cavity is formed in the second flow channel. The second throttler is disposed in the flow path connection module. The second valve core of the second throttler is disposed in the second throttling cavity. The third inlet and outlet and the fourth inlet and outlet are both located in the second flow channel and correspond to the two ends of the second throttling cavity, respectively.

15. The plate heat exchanger assembly according to claim 14, characterized in that, The plate heat exchanger assembly includes a first filter, and the flow path connection module further includes a filter cavity disposed in the first flow channel. The filter cavity is formed at the end of the first throttling cavity away from the second interface. The first filter is disposed in the filter cavity, and the end of the filter cavity away from the first throttling cavity is used to connect with the piping of the air conditioning system.

16. An air conditioning system, characterized in that, include: Indoor heat exchanger; Outdoor heat exchanger; The compressor, the indoor heat exchanger, and the outdoor heat exchanger are all connected to the compressor; The plate heat exchanger assembly according to any one of claims 1-15, wherein the first interface is connected to the indoor heat exchanger and the fourth interface is connected to the compressor.

17. The air conditioning system according to claim 16, characterized in that, It also includes a four-way valve, which has a first valve port, a second valve port, a third valve port and a fourth valve port. The first valve port is connected to the exhaust port of the compressor, the second valve port is connected to the indoor heat exchanger, the third valve port is connected to both the return port of the compressor and the fourth interface, and the fourth valve port is connected to the outdoor heat exchanger.

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