Throttling device, integrated heat exchange device and air conditioning system

Abstract

The utility model discloses a throttling device, integrated heat exchange device and air conditioning system relates to refrigeration technical field. The throttling device includes: valve body, is equipped with first valve cavity, second valve cavity in valve body, is equipped with the valve port part for throttling between first valve cavity and second valve cavity, is equipped with the first interface of intercommunication first valve cavity on valve body, still is equipped with the second interface, third interface of intercommunication second valve cavity on valve body. The throttling device according to the utility model embodiment realizes refrigerant shunt through multiple interfaces in the inside, simplifies external pipeline, shortens the length of pipe connection, and improves operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically to a throttling device, an integrated heat exchange device, and an air conditioning system. Background Technology

[0002] In multi-split air conditioning systems, auxiliary expansion valves are installed to throttle and reduce the pressure of some refrigerant, and heat exchangers are used to achieve heat exchange between the main and auxiliary refrigerants to improve system energy efficiency. However, some existing air conditioning systems use two expansion valves as the connection for controlling the pipeline flow direction, resulting in larger equipment size and more complex piping. In particular, the connecting pipes between the main and auxiliary lines are relatively long, which can easily lead to vibration stress concentration during transportation due to unreasonable structural design, causing interface damage and leakage, and affecting system reliability.

[0003] Therefore, in order to simplify the piping, structural improvements to key components are one of the current research directions. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention aims to provide a throttling device that achieves refrigerant diversion through multiple internal interfaces, simplifies external piping, shortens pipe length, and improves operational reliability.

[0005] The second aspect of this utility model aims to provide an integrated heat exchange device having the above-mentioned throttling device.

[0006] The third aspect of this utility model aims to provide an air conditioning system having the aforementioned integrated heat exchange device.

[0007] The throttling device according to a first aspect of the present invention includes: a valve body, wherein a first valve chamber and a second valve chamber are provided inside the valve body, and a valve port for throttling is provided between the first valve chamber and the second valve chamber; the valve body is provided with a first interface communicating with the first valve chamber, and the valve body is also provided with a second interface and a third interface communicating with the second valve chamber.

[0008] According to the throttling device of this utility model, by providing multiple interfaces on the throttling device, the refrigerant can be diverted within the throttling device, which helps to simplify the external piping structure, shorten the pipe length, and improve reliability. When the throttling device is applied to an air conditioning system, it helps to shorten the pipe length between the main and auxiliary circuits, reduces the risk of excessive vibration stress concentration, and thus improves the compactness and reliability of the air conditioning system.

[0009] In some optional embodiments, the throttling device further includes: a valve core and a drive assembly, wherein at least a portion of the valve core is located within the first valve cavity or the second valve cavity, the valve core includes an adjusting head for engaging the valve port, a flow passage is formed between the outer peripheral surface of the adjusting head and the inner peripheral surface of the valve port, and the circumference of the adjusting head varies axially; the drive assembly is disposed on the valve body and connected to the valve core, the drive assembly being used to drive the valve core to move axially along the valve port.

[0010] Furthermore, the drive assembly includes a stator, a rotor, and a screw, wherein the rotor mates with the stator and has an internal thread; the screw passes through the rotor and is threadedly engaged with the rotor, and the valve core is connected to the screw.

[0011] Furthermore, the throttling device also includes a pre-tightening spring element connected between the screw and the valve core.

[0012] In some alternative embodiments, the valve body includes: a first valve housing, a second valve housing, and a third valve housing; the drive assembly is disposed within the first valve housing; the second valve housing is connected to one end of the first valve housing, and the first valve cavity is formed within the second valve housing; the first interface is disposed on the second valve housing; the third valve housing is connected to the end of the second valve housing away from the first valve housing, and the second valve cavity is formed within the third valve housing; the second interface and the third interface are disposed on the second valve housing.

[0013] Further optionally, the throttling device further includes: an inner sleeve, which is located inside the first valve cavity and sleeved on the outside of the valve core, the inner sleeve dividing the first valve cavity into an inner cavity and an outer cavity, the inner cavity communicating with the valve port, the outer cavity communicating with the first interface, and the inner sleeve being provided with an overflow hole.

[0014] Specifically, there are multiple overflow holes, which are spaced apart circumferentially.

[0015] Specifically, optionally, it also includes: a filter element; the filter element is disposed in the second valve cavity.

[0016] According to some alternative embodiments of the present invention, the filter element avoids the path from the valve port to the second interface, and the filter element is located on the path from the valve port to the third interface.

[0017] In some alternative embodiments, the third interface is disposed opposite the valve port, the second interface is located between the valve port and the third interface, and the filter element is located between the second interface and the third interface.

[0018] Furthermore, the inner wall of the second valve chamber and the outer periphery of the filter element are provided with a groove on one and a protrusion on the other that engages in the groove; and / or, the filter screen portion of the filter element protrudes toward the third interface.

[0019] More specifically, the throttling device has a first conducting state and a second conducting state; when the throttling device is in the first conducting state, fluid flows into the first valve chamber from the first interface and flows out of the second valve chamber through the second interface and the third interface after being throttled by the valve port; when the throttling device is in the second conducting state, after the fluid flows into the second valve chamber from the third interface, part of the fluid flows out of the first valve chamber through the first interface after being throttled by the valve port, and the other part of the fluid flows out of the second valve chamber through the second interface without passing through the valve port.

[0020] An integrated heat exchange device according to a second aspect embodiment of the present invention includes: a dual-path heat exchanger, a first heat exchange pipeline, a second heat exchange pipeline, a first throttling device, and a second throttling device. The dual-path heat exchanger has a first heat exchange port, a second heat exchange port, a third heat exchange port, and a fourth heat exchange port. The dual-path heat exchanger contains a first heat exchange pipeline and a second heat exchange pipeline. The first heat exchange pipeline is connected between the first heat exchange port and the second heat exchange port. The second heat exchange pipeline is connected between the third heat exchange port and the fourth heat exchange port, and heat exchange occurs between the second heat exchange pipeline and the first heat exchange pipeline. The first throttling device is the throttling device according to a first aspect embodiment of the present invention, and the third port of the first throttling device is connected to the second heat exchange port. The second throttling device has a fourth port and a fifth port. The fourth port is connected to the second port of the first throttling device, and the fifth port is connected to the third heat exchange port.

[0021] According to some alternative embodiments, the integrated heat exchange device further includes: a first filter, the first filter being connected to the first interface of the first throttling device.

[0022] Furthermore, it also includes a second filter, which is connected to the first heat exchange port.

[0023] Furthermore, the dual-path heat exchanger is a plate heat exchanger.

[0024] An air conditioning system according to a third aspect of the present invention includes: a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchange unit, and an integrated heat exchange device according to a second aspect of the present invention. The four-way valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The compressor includes an inlet end and an outlet end, the outlet end being connected to the first valve port, and the inlet end being connected to the third valve port. One end of the outdoor heat exchanger is connected to the second valve port of the four-way valve. The indoor heat exchange unit includes at least one indoor heat exchanger, one end of which is connected to the fourth valve port of the four-way valve. The first heat exchange port is connected to the other end of the indoor heat exchange unit, the fourth heat exchange port is connected to the inlet end or the air supply port of the compressor, and the first port is connected to the other end of the outdoor heat exchanger.

[0025] In some specific embodiments, the indoor heat exchange unit includes at least one indoor branch, on which an indoor heat exchanger, an indoor throttling device, and an indoor filter are arranged in series. The indoor heat exchanger is connected to the fourth valve port, and the indoor filter is connected to the first heat exchange port of the integrated heat exchange device; when there are at least two indoor branches, they are arranged in parallel.

[0026] Specifically, the air conditioning system may have a first operating state and a second operating state. When the air conditioning system is in the first operating state, the refrigerant discharged from the compressor flows into the first valve chamber from the first interface and flows out of the second valve chamber through the second interface and the third interface after being throttled by the valve port. When the air conditioning system is in the second operating state, after flowing into the second valve chamber from the third interface, a portion of the fluid flows out of the first valve chamber through the first interface after being throttled by the valve port, while the other portion of the fluid flows out of the second valve chamber through the second interface without passing through the valve port.

[0027] 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

[0028] 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:

[0029] Figure 1 This is a schematic diagram of the internal structure of the throttling device in some embodiments of the present invention;

[0030] Figure 2 This is another internal structural diagram of the throttling device in some embodiments of the present invention;

[0031] Figure 3This is a schematic diagram showing the location of the flow channel in some embodiments of this utility model;

[0032] Figure 4 for Figure 1 A magnified view of a portion of point A in the middle;

[0033] Figure 5 This is a schematic diagram of the integrated heat exchange device in some embodiments of the present invention;

[0034] Figure 6 This is a top view of an integrated heat exchange device in some embodiments of the present invention;

[0035] Figure 7 This is a schematic diagram of the integrated heat exchange device in some embodiments of the present invention;

[0036] Figure 8 This is a schematic diagram of the internal structure of the second throttling device in some embodiments of the present invention;

[0037] Figure 9 This is a schematic diagram of the air conditioning system in some embodiments of the present invention.

[0038] Figure label:

[0039] Air conditioning system 10000

[0040] Compressor 1, Inlet end 1a, Outlet end 1b

[0041] Four-way valve 2, first valve port 2a, second valve port 2b, third valve port 2c, fourth valve port 2d

[0042] Outdoor heat exchanger 3

[0043] Indoor heat exchange unit 4, indoor heat exchanger 401, indoor throttling device 402, indoor filter 403.

[0044] Integrated heat exchanger 1000

[0045] Throttling device 100

[0046] Valve body 10, first valve housing 11, second valve housing 12, first valve chamber 121, third valve housing 13, second valve chamber 131, first interface 141, second interface 142, third interface 143, valve port 15, valve core 30, adjusting head 31, flow channel 40, drive assembly 50, stator 51, rotor 52, screw 53, preload spring 60, filter element 70, slot 81, protrusion 82, inner sleeve 90, overflow hole 91.

[0047] Second throttling device 300, fourth interface 301, fifth interface 302

[0048] Dual-channel heat exchanger 500, first heat exchange port 501, second heat exchange port 502, third heat exchange port 503, fourth heat exchange port 504, first heat exchange pipeline 505, second heat exchange pipeline 506.

[0049] First filter 601, second filter 602. Detailed Implementation

[0050] 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.

[0051] In the description of this utility model, it should be understood that the terms "longitudinal," "upper," "lower," "top," "bottom," "inner," "outer," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] The following is for reference. Figures 1-4 A throttling device 100 according to a first aspect embodiment of the present invention is described.

[0054] like Figure 1 and Figure 2 As shown, the throttling device 100 includes a valve body 10. The valve body 10 has a channel for refrigerant flow, and at the same time, the valve body 10 has the ability to withstand high pressure, ensuring the operational stability and reliability of the throttling device 100.

[0055] The valve body 10 has a first valve chamber 121 and a second valve chamber 131, and a valve port 15 for throttling is provided between the first valve chamber 121 and the second valve chamber 131.

[0056] The first valve chamber 121 and the second valve chamber 131 are arranged sequentially and connected by the valve port 15. That is, when the refrigerant flows in the valve body 10, it can enter the second valve chamber 131 from the first valve chamber 121 or from the second valve chamber 131 to the first valve chamber 121. The throttling device 100 has a bidirectional throttling operation mode.

[0057] In this embodiment, the valve port 15 is designed with a smaller through-hole diameter, so that when the refrigerant flows through the valve port 15, the flow rate decreases rapidly and the pressure drops sharply, thereby achieving the effect of effectively throttling and reducing the pressure of the refrigerant.

[0058] In some embodiments, the diameter of the through-hole at the valve port 15 is not adjustable, and the throttling capacity of the throttling device 100 is fixed. In other embodiments, the diameter of the through-hole at the valve port 15 is adjustable, thereby making the throttling capacity adjustable.

[0059] The valve body 10 is provided with a first interface 141 that connects to the first valve chamber 121, and the valve body 10 is also provided with a second interface 142 and a third interface 143 that connect to the second valve chamber 131.

[0060] The second interface 142 and the third interface 143 are used to split the refrigerant flow. This integrates the flow splitting structure within the throttling device 100, eliminating the need for additional flow splitting components outside the valve body 10, thereby reducing the number of connection points in the external piping and improving the reliability of the throttling device 100. Simultaneously, it allows for a more compact layout of the throttling device 100, making it suitable for installation in space-constrained equipment.

[0061] For example, the refrigerant enters the first valve chamber 121 from the first port 141, then enters the second valve chamber 131 after being throttled and depressurized by the valve port 15, and flows out of the valve body 10 from the second port 142 and the third port 143 respectively, thereby realizing the distribution of the refrigerant flow direction.

[0062] For example, after the refrigerant enters the second valve chamber 131 through the third port 143, part of the refrigerant passes through the throttling and pressure reduction of the valve port 15 and enters the first valve chamber 121, and finally flows out of the throttling device 100 from the first port 141; the other part of the refrigerant does not pass through the valve port 15 and leaves the second valve chamber 131 directly through the second port 142.

[0063] According to the throttling device 100 of this utility model embodiment, a first valve chamber 121 and a second valve chamber 131 are provided within the valve body 10, and a valve port 15 with throttling function is provided between them, so that the refrigerant achieves a bidirectional throttling and pressure reduction effect within the throttling device 100. Multiple interfaces are provided on the valve body 10, respectively connected to the first valve chamber 121 and the second valve chamber 131, thereby realizing the diversion and guidance of the refrigerant. The throttling device 100 of this application embodiment achieves internal diversion of the refrigerant by providing multiple interfaces, which, while satisfying the throttling and pressure reduction function, simplifies external pipeline connections, reduces space occupation, and improves overall compactness and reliability.

[0064] In some alternative embodiments, please refer to Figures 1-3 The throttling device 100 further includes a valve core 30 and a drive assembly 50. At least a portion of the valve core 30 is located within a first valve chamber 121 or a second valve chamber 131. The valve core 30 includes an adjusting head 31 for engaging with a valve port 15. A flow passage 40 is formed between the outer peripheral surface of the adjusting head 31 and the inner peripheral surface of the valve port 15. The circumference of the adjusting head 31 varies axially. The drive assembly 50 is disposed on the valve body 10 and connected to the valve core 30. The drive assembly 50 is used to drive the valve core 30 to move axially along the valve port 15.

[0065] In the above technical solution, the throttling capability of the throttling device 100 is adjustable. Specifically, the valve core 30 is moved axially by the drive component 50, which changes the flow passage 40 between the regulating head 31 and the valve port 15, thereby achieving continuous adjustment of the flow cross-sectional area. This adjustable throttling method allows the throttling device 100 to adapt to the flow and pressure control requirements under different operating conditions, thereby improving the adjustment accuracy of the throttling device 100.

[0066] In some embodiments, the valve core 30 is located within the first valve chamber 121, and its adjusting head 31 is fitted into the valve port 15. When the valve core 30 drives the adjusting head 31 to move axially, the adjusting head 31 moves within the valve port 15, thereby changing the cross-sectional area of ​​the flow channel 40 between the outer peripheral surface of the adjusting head 31 and the inner wall of the valve port 15, thus achieving continuous regulation of the refrigerant flow rate and pressure. Alternatively, in some other embodiments, the valve core 30 is located within the second valve chamber 131, and its adjusting head 31 is fitted into the valve port 15, which also achieves the effect of pressure reduction and throttling.

[0067] Specifically, the regulating head 31 can be conical or have other gradually changing structures. As the valve core 30 moves axially, the flow area of ​​the flow passage 40 changes continuously, thereby achieving precise control of the refrigerant flow and pressure.

[0068] Optionally, the cross-section of the regulating head 31 can be circular or other shapes, and the valve port 15 is configured to fit the cross-section of the regulating head 31 to achieve precise fit and throttling control.

[0069] In some alternative embodiments, the drive assembly 50 may include a stepper motor, a servo motor, or other types of electric drive devices. These drive devices are used to adjust the position of the valve core 30 to control the throttling opening and refrigerant flow rate. For example, when the drive assembly 50 includes a stepper motor, the throttling device 100 has a lower cost and is more economical. As another example, when the drive assembly 50 includes a servo motor, the servo motor can steplessly adjust the position of the valve core 30, enabling the throttling device 100 to achieve a high-precision throttling and pressure reduction effect.

[0070] It is worth noting that the structural design of the valve port 15 in this application is also very flexible. In some embodiments, the inner diameter of the valve port 15 is gradually varied along the axial direction. For example, it can vary from large to small or from small to large, forming a channel structure with a conical, parabolic, or other curved shape.

[0071] In this way, during the interaction between the valve port 15 and the regulating head 31, the inner diameter of the valve port 15 changes along the axial direction, which in turn changes the cross-sectional area of ​​the flow passage 40 between the regulating head 31 and the valve port 15, thereby achieving the regulation of refrigerant flow and pressure.

[0072] Furthermore, the drive assembly 50 includes a stator 51, a rotor 52, and a screw 53. The rotor 52 mates with the stator 51 and has an internal thread. The screw 53 passes through the rotor 52 and is threadedly engaged with it. The valve core 30 is connected to the screw 53.

[0073] Specifically, the stator section 51 is a coil, and the rotor section 52 is a magnetic rotor. As is well known to those skilled in the art, when the coil is energized, it generates a rotating magnetic field, thereby driving the magnetic rotor to rotate. The screw 53 is threadedly engaged with the magnetic rotor, thus converting the rotational motion into linear motion, ultimately driving the valve core 30 to move axially.

[0074] Optionally, the rotor 52 is provided with an internal thread structure and the screw 53 is provided with an external thread structure. As the rotor 52 rotates, the screw 53 moves in the axial direction, thereby pushing the valve core 30 connected to it to move in the axial direction, so as to achieve precise adjustment of the throttling opening.

[0075] Furthermore, the throttling device 100 also includes a preload spring member 60 connected between the screw 53 and the valve core 30. The preload spring member 60 can provide preload force during the movement of the screw 53, ensuring that the axial movement of the screw 53 can be reliably transmitted to the valve core 30.

[0076] Optionally, the preload element 60 includes elements with elasticity such as springs, rubber rings, or corrugated gaskets. These structures can provide a stable preload between the screw 53 and the valve core 30, ensuring continuous and reliable transmission. At the same time, these elastic elements can also absorb mechanical vibrations, improving the stability and durability of the throttling device 100.

[0077] Alternatively, the preload spring 60 can be a spring. The screw 53 has a limiting portion at its end for positioning, and the spring is at least partially fitted onto the limiting portion, with its other end abutting against the end of the valve core 30. This provides preload force between the screw 53 and the valve core 30, ensuring stable and reliable transmission.

[0078] In some alternative embodiments, the valve body 10 includes a first valve housing 11, a second valve housing 12, and a third valve housing 13. The first valve housing 11, the second valve housing 12, and the third valve housing 13 are sequentially connected and fixed along the axial direction.

[0079] The drive assembly 50 is housed within the first valve housing 11. This arrangement facilitates a compact structure for the throttling device 100, while also enabling the drive assembly 50 to be sealed and protected, ensuring its stable and reliable operation.

[0080] The second valve housing 12 is connected to one end of the first valve housing 11. Optionally, the second valve housing 12 and the first valve housing 11 are fixedly and sealed together by means of threaded connection, welding, or other methods. A first valve cavity 121 is formed inside the second valve housing 12, and a first interface 141 is provided on the second valve housing 12. This arrangement allows refrigerant to flow into or out of the first valve cavity 121 through the first interface 141, and to achieve throttling and pressure reduction when passing through the valve port 15, thereby achieving regulation of refrigerant flow and pressure. At the same time, in this embodiment, the first valve cavity 121 is integrated into the independent second valve housing 12, which helps to improve the sealing performance of the first valve cavity 121, thereby enhancing the operational stability and reliability of the throttling device 100.

[0081] The third valve housing 13 is connected to the end of the second valve housing 12 furthest from the first valve housing 11. Optionally, the third valve housing 13 and the second valve housing 12 are fixedly and sealed together by means of threaded connection, welding, or other methods. A second valve cavity 131 is formed inside the third valve housing 13, and a second interface 142 and a third interface 143 are provided on the second valve housing 12. Here, the second interface 142 and the third interface 143 are used to guide the refrigerant to different pipelines to achieve refrigerant diversion and improve the functional integration of the throttling device 100.

[0082] It should be noted that when the refrigerant enters the first valve chamber 121 from the first port 141, it directly impacts the valve core 30, resulting in a large load on the valve core 30. To mitigate the impact of the refrigerant on the valve core 30, in some embodiments, [the following is combined with...] Figure 1 and Figure 2 The throttling device 100 also includes an inner sleeve 90. The inner sleeve 90 is located inside the first valve chamber 121 and is sleeved on the outside of the valve core 30. The inner sleeve 90 divides the first valve chamber 121 into an inner cavity and an outer cavity. The inner cavity is connected to the valve port 15, and the outer cavity is connected to the first interface 141. An overflow hole 91 is provided on the inner sleeve 90.

[0083] In this way, after the refrigerant enters the first valve chamber 121, it first comes into contact with the inner sleeve 90. The inner sleeve 90 can disperse the direct flow of the refrigerant and prevent the refrigerant from acting directly on the surface of the valve core 30.

[0084] Meanwhile, the inner sleeve 90 is provided with an overflow hole 91, so that the refrigerant can enter the inner cavity through the overflow hole 91, thereby protecting the valve core 30 and improving the smoothness and reliability of the throttling device 100 operation.

[0085] Optionally, the location, shape, and number of overflow holes 91 are highly flexible and can be configured in a manner that minimizes impact. This application does not impose any specific limitations.

[0086] Specifically, there are multiple overflow holes 91, which are spaced apart circumferentially.

[0087] In the above technical solution, the multiple overflow holes 91 are arranged in a circumferentially to ensure that the refrigerant is evenly distributed along the circumferential direction when entering the inner cavity, thereby improving the smoothness of the valve core 30's operation, reducing control deviations caused by excessive or insufficient local pressure, and ultimately improving the adjustment accuracy of the throttling device 100.

[0088] Optionally, it also includes a filter element 70. The filter element 70 is disposed within the second valve chamber 131. The filter element 70 is adapted to filter the refrigerant flowing through the valve body 10, removing any impurities or contaminants that may be carried therein, thereby preventing foreign objects from entering and causing blockages or wear, and improving the reliability of the throttling device 100.

[0089] Optionally, the filter element 70 also includes a filter screen.

[0090] According to some alternative embodiments of the present invention, the filter element 70 avoids the path from the valve port 15 to the second interface 142, and the filter element 70 is located on the path from the valve port 15 to the third interface 143.

[0091] Specifically, the path between the first interface 141 and the third interface 143 is equipped with a filter element 70, while the path between the first interface 141 and the second interface 142 is not equipped with a filter element 70.

[0092] It is worth noting that in some specific application scenarios, the path between the first interface 141 and the third interface 143 serves as the main flow path for the refrigerant. A filter 70 is installed in this main flow path to intercept impurities that may be carried in the refrigerant, preventing these impurities from entering subsequent components and ensuring the reliability and stability of the system operation.

[0093] The path between the first interface 141 and the second interface 142 serves as an auxiliary flow path. No filter element 70 is installed in this path, which can reduce flow resistance and facilitate the smooth flow of the cooler in the auxiliary flow path.

[0094] In some alternative embodiments, the third port 143 is positioned directly opposite the valve port 15, which facilitates the direct flow of refrigerant between the valve port 15 and the third port 143, reducing flow resistance and improving the control accuracy of the throttling device 100.

[0095] The second port 142 is located between the valve port 15 and the third port 143. In this way, some refrigerant can flow directly out of the second valve chamber 131 from the second port 142 after passing through the valve port 15, forming a shorter flow path.

[0096] The filter element 70 is located between the second port 142 and the third port 143. This ensures that the refrigerant flowing to the third port 143 must be filtered before entering the main output path, thereby effectively intercepting impurities and improving the reliability of the throttling device 100.

[0097] In some alternative embodiments, the second interface 142 and the third interface 143 are spaced apart along the axial direction of the second valve chamber 131. The filter element 70 is disposed between the second interface 142 and the third interface 143. This makes the throttling device 100 simple and compact in structure, which is beneficial for its placement in a limited space. At the same time, the filter element 70 is located in a position that is easy to assemble and replace, which helps to improve the production efficiency of the throttling device 100.

[0098] Furthermore, the inner wall of the second valve chamber 131 and the outer periphery of the filter element 70 are provided with a groove 81 on one side and a protrusion 82 that fits into the groove 81 on the other side, and / or the filter screen portion of the filter element 70 protrudes toward the third interface 143.

[0099] In some technical solutions, the installation process of the filter element 70 can be simplified by using the cooperation of the slot 81 and the protrusion 82. The filter element 70 can be positioned and fixed by simply pushing it into the second valve chamber 131 along the axial direction. This method is simple to operate and has high assembly efficiency. During the refrigerant flow process, the snap-fit ​​interface can effectively prevent the filter element 70 from shifting or falling off, ensuring that it is stably set in the designated position, thereby ensuring the reliability of the filtration function.

[0100] Further optional, combined Figure 1 , Figure 2 and Figure 4 A locking protrusion 82 is disposed on the inner wall of the second valve chamber 131, and the locking protrusion 82 includes a first locking protrusion and a second locking protrusion spaced apart along the axial direction. A locking groove 81 is provided on the filter element 70. When the filter element 70 is installed in the second valve chamber 131, the first locking protrusion abuts against the side wall of the locking groove 81; the second locking protrusion abuts against the end of the locking groove 81. Here, the first locking protrusion abuts against the side wall of the locking groove 81 to achieve circumferential positioning of the filter element 70, thereby enhancing the installation stability of the filter element 70; the second locking protrusion abuts against the end of the locking groove 81, thus limiting the axial installation position of the filter element 70 and preventing over-installation.

[0101] In some other designs, the filter screen of filter element 70 protrudes towards the third interface 143. This protruding filter screen increases the filtration area and improves the filtration effect. At the same time, the increased contact area helps reduce the risk of localized blockage and ensures smooth refrigerant flow.

[0102] To balance the stability of the filter element 70 during installation and its filtration effect, in some alternative embodiments, the outer periphery of the filter element 70 is engaged with the inner wall of the second valve chamber 131. Simultaneously, the filter screen portion of the filter element 70 protrudes towards the third interface 143.

[0103] In some specific embodiments, the throttling device 100 has a first conducting state and a second conducting state. When the throttling device 100 is in the first conducting state, fluid flows into the first valve chamber 121 from the first port 141, is throttled by the valve port 15, and then flows out of the second valve chamber 131 through the second port 142 and the third port 143. The throttling device 100 controls the flow of fluid from the first port 141 to the second port 142 and the third port 143.

[0104] When the throttling device 100 is in the second conducting state, after the fluid flows into the second valve chamber 131 from the third port 143, a portion of the fluid is throttled through the valve port 15 and flows out of the first valve chamber 121 through the first port 141, while the other portion of the fluid flows out of the second valve chamber 131 through the second port 142 without passing through the valve port 15. In this state, the throttling device 100 can achieve reverse throttling control (i.e., when flowing back from the third port), ensuring the bidirectional regulation capability of the throttling device 100.

[0105] The following is combined Figures 5-8This invention describes an integrated heat exchange device 1000 according to a second aspect embodiment of the present invention, comprising: a dual-path heat exchanger 500, a first throttling device, and a second throttling device 300. The dual-path heat exchanger 500 has a first heat exchange port 501, a second heat exchange port 502, a third heat exchange port 503, and a fourth heat exchange port 504. The dual-path heat exchanger 500 includes a first heat exchange pipe 505 and a second heat exchange pipe 506. The first heat exchange pipe 505 is connected between the first heat exchange port 501 and the second heat exchange port 502. The second heat exchange pipe 506 is connected between the third heat exchange port 503 and the fourth heat exchange port 504, and heat exchange occurs between the second heat exchange pipe 506 and the first heat exchange pipe 505. Here, the first throttling device is the throttling device 100 of the first aspect embodiment of the present invention.

[0106] The first heat exchange pipe 505 and the second heat exchange pipe 506 are arranged within the dual-path heat exchanger 500. They are independent of each other and suitable for heat exchange. Optionally, the first heat exchange pipe 505 and the second heat exchange pipe 506 directly exchange heat, or the first heat exchange pipe 505 and the second heat exchange pipe 506 exchange heat through alternately arranged metal plates, or the first heat exchange pipe 505 and the second heat exchange pipe 506 exchange heat through other heat-conducting structures.

[0107] Integrating two types of heat exchange piping within the heat exchanger reduces the interference of ambient temperature on the heat exchange process, resulting in more concentrated heat exchange and improved efficiency. It also reduces the risk of leakage from external heat exchange piping, enhancing the reliability of the integrated heat exchanger 1000. Furthermore, the internal heat exchange piping improves the ease of installation for the dual-circuit heat exchanger 500. Moreover, the internal heat exchange piping allows for a more compact design of the integrated heat exchanger 1000, improving space utilization.

[0108] The third port 143 of the first throttling device is connected to the second heat exchange port 502. This allows the refrigerant, after being throttled and depressurized, to directly enter the first heat exchange pipe 505 of the dual heat exchanger 500 and to exchange heat with the second heat exchange pipe 506.

[0109] Specifically, when the integrated heat exchanger 1000 is applied to the air conditioning system 10000, the first heat exchange port 501 is connected to the indoor heat exchange unit 4. When the air conditioning system 10000 is in cooling mode, after the refrigerant is depressurized by the first throttling device, part of the refrigerant enters the second heat exchange port 502 of the dual-path heat exchanger 500 through the third interface 143 and flows through the first heat exchange pipe 505. This part of the refrigerant releases heat in the first heat exchange pipe 505, and the temperature is further reduced. Then, the refrigerant enters the indoor heat exchange unit 4 from the first heat exchange port 501. Here, it absorbs heat from the indoor environment and evaporates into a gaseous state, thereby achieving the cooling treatment of the indoor air.

[0110] Combination Figures 5-8 The second throttling device 300 has a fourth interface 301 and a fifth interface 302. The fourth interface 301 is connected to the second interface 142 of the first throttling device, and the fifth interface 302 is connected to the third heat exchange port 503 of the dual-path heat exchanger 500. This configuration allows a portion of the refrigerant regulated by the first throttling device to directly enter the second throttling device 300 for further throttling and pressure reduction, resulting in a lower-temperature, low-pressure refrigerant. Subsequently, this low-temperature, low-pressure refrigerant enters the second heat exchange pipe 506 of the dual-path heat exchanger 500 and is adapted to absorb heat from the refrigerant in the first heat exchange pipe 505, raising its own temperature while simultaneously lowering the temperature of the refrigerant in the first heat exchange pipe 505. Finally, the heated refrigerant flows out of the dual-path heat exchanger 500 from the fourth heat exchange port 504, completing its heat exchange process. Here, the fourth heat exchange port 504 is connected to the compressor 1 to allow the refrigerant to flow back into the compressor 1.

[0111] In some such Figure 8 In the specific embodiment shown, the second throttling device 300 further includes an inner sleeve. The inner sleeve is located inside the valve cavity and sleeved on the outside of the valve core, and an overflow hole is provided on the inner sleeve. In this way, after the refrigerant enters the valve cavity, it first contacts the inner sleeve, avoiding the refrigerant from directly acting on the surface of the valve core and improving the operational stability of the second throttling device 300.

[0112] Meanwhile, the inner sleeve is equipped with an overflow hole, so that the refrigerant can enter the inner cavity through the overflow hole.

[0113] Here, the location, shape, and number of overflow holes can be set very flexibly, and can be configured in a way that minimizes impact. This application does not impose specific limitations.

[0114] Alternatively, multiple overflow holes are provided at circumferential intervals to ensure the smooth operation of the valve core when the refrigerant passes through, reduce control deviations caused by excessive or insufficient local pressure, and ultimately improve the adjustment accuracy of the second throttling device 300.

[0115] Optionally, the second throttling device 300 may also include a filter screen. The filter screen is suitable for filtering the refrigerant flowing through the valve body, removing impurities and other contaminants that may be carried therein, thereby preventing foreign objects from entering the channel and causing blockage or wear, and improving the reliability of the second throttling device 300.

[0116] The integrated heat exchanger 1000 in this embodiment has a two-stage throttling effect, which helps improve the heat exchange efficiency and operating performance of the air conditioning system 10000. Simultaneously, by providing a second interface 142 on the first throttling device, a simpler piping configuration can be provided, making the connection structure between the first and second throttling devices 300 more concise and reliable, thus improving piping stability and assembly efficiency. Furthermore, integrating the first throttling device, the second throttling device 300, and the dual-path heat exchanger 500 further improves the compactness of the heat exchanger, reduces installation space, and facilitates the miniaturization design of the air conditioning system 10000.

[0117] like Figures 5-7 As shown, the integrated heat exchanger 1000 according to some embodiments of the present invention further includes a first filter 601. The first filter 601 is connected to the first interface 141 of the first throttling device. This enables effective filtration of the refrigerant entering the first throttling device and the subsequent second throttling device 300, removing any impurities or particles that may be carried therein, preventing impurities from clogging the throttling channel or damaging the structure of the valve core 30, ensuring the working performance of the throttling device 100, and improving the working stability and service life of the integrated heat exchanger 1000.

[0118] In some such Figure 7 In the illustrated embodiment, the integrated heat exchange device 1000 further includes a second filter 602, which is connected to the first heat exchange port 501. The second filter 602 further filters the refrigerant entering the first heat exchange pipe 505 of the dual-path heat exchanger 500, intercepting any small impurities that may be present and preventing them from entering the heat exchange pipe and causing blockage or affecting heat exchange efficiency. The second filter 602 improves the cleanliness and reliability of the heat exchange device and also helps extend the service life of the entire device.

[0119] Furthermore, the dual-path heat exchanger 500 is a plate heat exchanger. As we know, plate heat exchangers can provide a large heat exchange area in a small volume, which is beneficial for the miniaturization design of the integrated heat exchange device 1000, while ensuring heat exchange efficiency and guaranteeing the performance of the air conditioning system 10000.

[0120] like Figure 9 The image shows an air conditioning system 10000 according to a third aspect embodiment of the present invention. The air conditioning system 10000 includes: a four-way valve 2, a compressor 1, an outdoor heat exchanger 3, an indoor heat exchange unit 4, and an integrated heat exchange device 1000. Here, the integrated heat exchange device 1000 is the integrated heat exchange device 1000 of the second aspect embodiment of the present invention.

[0121] The four-way valve 2 includes a first valve port 2a, a second valve port 2b, a third valve port 2c, and a fourth valve port 2d. The compressor 1 includes an inlet end 1a and an outlet end 1b, with the outlet end 1b connected to the first valve port 2a and the inlet end 1a connected to the third valve port 2c. One end of the outdoor heat exchanger 3 is connected to the second valve port 2b of the four-way valve 2. The indoor heat exchange unit 4 includes at least one indoor heat exchanger 401, with one end of the indoor heat exchange unit 4 connected to the fourth valve port 2d of the four-way valve 2. The first heat exchange port 501 in the integrated heat exchange device 1000 is connected to the other end of the indoor heat exchange unit 4, the fourth heat exchange port 504 is connected to the inlet end 1a or the air supply port of the compressor 1, and the first interface 141 is connected to the other end of the outdoor heat exchanger 3.

[0122] The air conditioning system 10000 of this embodiment achieves refrigerant diversion and heat utilization through the coordinated operation of the four-way valve 2, compressor 1, outdoor heat exchanger 3, indoor heat exchange unit 4, and integrated heat exchange device 1000, thereby improving the overall energy efficiency of the air conditioning system 10000. Furthermore, the improved integrated heat exchange device 10000 in this embodiment facilitates a reduction in the size of the air conditioning system 10000 while simultaneously improving its reliability.

[0123] It is worth noting that the type of air conditioner that can be used in the air conditioning system 10000 of this application embodiment is not limited. It can be an integrated air conditioner or a split air conditioner. An integrated air conditioner can include a window air conditioner or a portable air conditioner, etc., and a split air conditioner can include a wall-mounted air conditioner, a floor-standing air conditioner, or a multi-split air conditioner, etc.

[0124] The following is combined Figure 9 The solid arrow indicates the flow direction of the refrigerant in the air conditioning system 10000 under cooling conditions. The refrigerant first exits from the outlet 1b of the compressor 1, where it is in a high-temperature, high-pressure gaseous state. Subsequently, the refrigerant enters the first port 2a of the four-way valve 2 and flows out through the second port 2b via its internal switching path, entering the outdoor heat exchanger 3 for heat exchange. In the outdoor heat exchanger 3, the refrigerant releases heat and gradually condenses into a liquid or gas-liquid mixture, completing the initial cooling process.

[0125] Next, the refrigerant flows into the integrated heat exchanger 1000, where it is divided into two branches within the first throttling device: a main refrigerant branch and an auxiliary refrigerant branch. The main refrigerant continues to flow along the first heat exchange pipe 505 and enters the indoor heat exchange unit 4. During this process, the main refrigerant absorbs heat from the indoor air, undergoing evaporative heat absorption, thereby achieving an indoor cooling effect. After completing heat absorption, the main refrigerant enters the fourth port 2d of the four-way valve 2 and flows out from the third port 2c.

[0126] Meanwhile, the auxiliary refrigerant enters the second heat exchange pipe 506. In this path, the auxiliary refrigerant exchanges heat with the first heat exchange pipe 505, absorbing heat carried by the main refrigerant to raise its own temperature. Subsequently, this portion of the auxiliary refrigerant merges with the main refrigerant flowing out from the third port 2c of the four-way valve 2 and flows back to the inlet end 1a of the compressor 1. The refrigerant entering the inlet end 1a of the compressor 1 re-enters the compression cycle, completing the refrigeration cycle of the entire air conditioning system 10000.

[0127] Alternatively, the combined refrigerant enters the gas inlet of compressor 1, and the added refrigerant is injected into the compression chamber of compressor 1 during the compression process, achieving intermediate gas replenishment and thus improving compression efficiency.

[0128] The following will continue to combine Figure 9 The dashed arrow indicates the flow direction of the refrigerant in the air conditioning system 10000 during heating operation. The refrigerant first exits from the compressor 1 at outlet 1b, where it is in a high-temperature, high-pressure gaseous state. Subsequently, the refrigerant enters the first port 2a of the four-way valve 2 and flows out through the fourth port 2d via its internal switching path, entering the indoor heat exchange unit 4 to release heat. In the indoor heat exchange unit 4, the refrigerant transfers heat to the indoor air, gradually condensing into a liquid or gas-liquid mixture.

[0129] Next, the refrigerant flows out of the indoor heat exchange unit 4 and into the integrated heat exchange device 1000, flows in the first heat exchange pipe 505 in the dual heat exchanger 500, and then enters the throttling device 100 from the third port 143 of the first throttling device.

[0130] Inside the first throttling device, the refrigerant is divided into two parts: one part flows out from the first port 141 of the first throttling device, undergoes further heat dissipation through the outdoor radiator, then flows into the four-way valve 2 through the second valve port 2b, and exits from the third valve port 2c; the other part flows out from the second port 142 of the first throttling device, enters the second throttling device 300, and then leaves through the second heat exchange pipe 506 of the dual-path heat exchanger 500. Finally, this part of the refrigerant merges with the refrigerant flowing out from the third valve port 2c of the four-way valve 2 and flows back to the inlet end 1a of the compressor 1, re-entering the compression cycle. Alternatively, the merged refrigerant enters the gas injection port of the compressor 1 to achieve intermediate gas injection, thereby improving compression efficiency.

[0131] In some further optional embodiments, the indoor heat exchange unit 4 includes at least one indoor branch, on which an indoor heat exchanger 401, an indoor throttling device 402, and an indoor filter 403 are arranged in series. The indoor heat exchanger 401 is connected to a fourth valve port 2d, and the indoor filter 403 is connected to the first heat exchange port 501 of the integrated heat exchange device 1000. This structural arrangement facilitates the flow of refrigerant between different components.

[0132] When there are at least two indoor branch circuits, they are connected in parallel. Refrigerant enters multiple indoor branch circuits, thereby enabling independent or simultaneous regulation of multiple indoor spaces, achieving the effect of multi-split operation. That is, one outdoor unit can drive multiple indoor units to work together, improving the performance of the air conditioning system.

[0133] Specifically, the air conditioning system 10000 has a first operating state and a second operating state. When the air conditioning system 10000 is in the first operating state, the refrigerant discharged by the compressor 1 flows into the first valve chamber 121 from the first port 141 and flows out of the second valve chamber 131 through the second port 142 and the third port 143 after being throttled by the valve port 15.

[0134] When the air conditioning system 10000 is in the second operating state, after the fluid flows into the second valve chamber 131 from the third interface 143, part of the fluid flows out of the first valve chamber 121 through the first interface 141 after being throttled by the valve port 15, and the other part of the fluid flows out of the second valve chamber 131 through the second interface 142 without passing through the valve port 15.

[0135] By designing the internal interface of the first throttle valve, the air conditioning system 10000 achieves multiple refrigerant flow paths under different operating conditions, thereby improving its adaptability. Simultaneously, the air conditioning system 10000 utilizes the cooperation between the first and second throttle valves to simplify the piping connection structure and improve system operational reliability.

[0136] The following is for reference. Figure 1 - Figure 4 The throttling device 100 according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0137] Reference Figure 1 and Figure 2 The throttling device 100 includes: a valve body 10, a valve core 30, a drive assembly 50, a pre-tightening spring element 60, and a filter element 70.

[0138] The valve body 10 includes: a first valve housing 11, a second valve housing 12, a third valve housing 13, a first port 141, a second port 142, a third port 143, and a valve port portion 15.

[0139] The second valve housing 12 is connected to one end of the first valve housing 11. A first valve cavity 121 is formed inside the second valve housing 12. The first interface 141 is provided on the second valve housing 12 and communicates with the first valve cavity 121.

[0140] The third valve housing 13 is connected to the end of the second valve housing 12 that is away from the first valve housing 11. A second valve cavity 131 is formed inside the third valve housing 13. The second interface 142 and the third interface 143 are provided on the third valve housing 13 and are uniformly connected to the second valve cavity 131.

[0141] The valve port 15 is located between the first valve chamber 121 and the second valve chamber 131. The valve port 15 is directly opposite the third interface 143. The second interface 142 is located between the valve port 15 and the third interface 143.

[0142] Reference Figure 3 At least a portion of the valve core 30 is located within the first valve chamber 121. The valve core 30 includes an adjusting head 31 for engaging with the valve port 15. A flow passage 40 is formed between the outer peripheral surface of the adjusting head 31 and the inner peripheral surface of the valve port 15. The circumference of the adjusting head 31 varies along the axial direction.

[0143] Reference Figure 1 and Figure 2 The drive assembly 50 is disposed within the first valve housing 11. The drive assembly 50 includes a stator portion 51, a rotor portion 52, and a screw 53. The rotor portion 52 mates with the stator portion 51 and has internal threads. The screw 53 passes through the rotor portion 52 and is threadedly engaged with it. The valve core 30 is connected to the screw 53.

[0144] The pre-tightening spring element 60 is connected between the screw 53 and the valve core 30.

[0145] The filter element 70 is disposed in the second valve chamber 131 and is located between the second port 142 and the third port 143.

[0146] Reference Figure 4 The filter element 70 has a groove 81 on its outer periphery; the inner wall of the second valve chamber 131 has a protrusion 82, so that the filter element 70 and the second valve chamber 131 are engaged internally.

[0147] Other components of the throttling device 100 according to embodiments of the present invention, such as the valve body 10 and the filter element 70, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0148] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0149] 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 throttling device, characterized in that, include: The valve body has a first valve chamber and a second valve chamber, and a valve port for throttling is provided between the first valve chamber and the second valve chamber; The valve body is provided with a first interface that connects to the first valve cavity, and the valve body is also provided with a second interface and a third interface that connect to the second valve cavity.

2. The throttling device according to claim 1, characterized in that, Also includes: A valve core, at least a portion of which is located within the first valve cavity or the second valve cavity, the valve core including an adjusting head for engaging the valve port, wherein an outer peripheral surface of the adjusting head and an inner peripheral surface of the valve port form a flow passage, and the circumference of the adjusting head varies axially; A drive assembly is disposed on the valve body and connected to the valve core, and the drive assembly is used to drive the valve core to move axially along the valve port.

3. The throttling device according to claim 2, characterized in that, The driving component includes: Stator section; The rotor portion mates with the stator portion, and the rotor portion has internal threads; A screw, which passes through the rotor section and is threadedly engaged with the rotor section, and a valve core is connected to the screw.

4. The throttling device according to claim 3, characterized in that, Also includes: A pre-tightening elastic element connected between the screw and the valve core.

5. The throttling device according to claim 2, characterized in that, The valve body includes: A first valve housing, wherein the drive assembly is disposed within the first valve housing; The second valve housing is connected to one end of the first valve housing, the first valve cavity is formed inside the second valve housing, and the first interface is provided on the second valve housing; A third valve housing is connected to the end of the second valve housing away from the first valve housing. The second valve cavity is formed inside the third valve housing. The second interface and the third interface are located on the second valve housing.

6. The throttling device according to claim 2, characterized in that, Also includes: An inner sleeve is located inside the first valve cavity and sleeved on the outside of the valve core. The inner sleeve divides the first valve cavity into an inner cavity and an outer cavity. The inner cavity is connected to the valve port, and the outer cavity is connected to the first interface. An overflow hole is provided on the inner sleeve.

7. The throttling device according to claim 6, characterized in that, The overflow holes are multiple and spaced apart circumferentially.

8. The throttling device according to any one of claims 1-7, characterized in that, Also includes: Filter element; the filter element is disposed in the second valve chamber.

9. The throttling device according to claim 8, characterized in that, The filter element avoids the path from the valve port to the second interface, and the filter element is located on the path from the valve port to the third interface.

10. The throttling device according to claim 9, characterized in that, The third interface is positioned opposite the valve port, the second interface is located between the valve port and the third interface, and the filter element is located between the second interface and the third interface.

11. The throttling device according to claim 8, characterized in that, The inner wall of the second valve chamber and the outer periphery of the filter element are provided with a groove on one and a protrusion on the other that engages with the groove; and / or, The filter element's screen portion protrudes towards the third interface.

12. The throttling device according to claim 1, characterized in that, The throttling device has a first conducting state and a second conducting state; When the throttling device is in the first conducting state, the fluid flows into the first valve chamber from the first interface and, after being throttled by the valve port, flows out of the second valve chamber through the second interface and the third interface. When the throttling device is in the second conducting state, after the fluid flows into the second valve chamber from the third interface, part of the fluid flows out of the first valve chamber through the first interface after being throttled by the valve port, and the other part of the fluid flows out of the second valve chamber through the second interface without passing through the valve port.

13. An integrated heat exchange device, characterized in that, include: A dual-channel heat exchanger, comprising a first heat exchange port, a second heat exchange port, a third heat exchange port, and a fourth heat exchange port, wherein the dual-channel heat exchanger is equipped with: The first heat exchange pipeline is connected between the first heat exchange port and the second heat exchange port; The second heat exchange pipeline is connected between the third heat exchange port and the fourth heat exchange port, and heat exchange occurs between the second heat exchange pipeline and the first heat exchange pipeline. A first throttling device, wherein the first throttling device is a throttling device according to any one of claims 1-12, and the third interface of the first throttling device is connected to the second heat exchange port; The second throttling device has a fourth interface and a fifth interface. The fourth interface is connected to the second interface of the first throttling device, and the fifth interface is connected to the third heat exchange port.

14. The integrated heat exchanger according to claim 13, characterized in that, Also includes: The first filter is connected to the first interface of the first throttling device.

15. The integrated heat exchanger according to claim 13, characterized in that, Also includes: The second filter is connected to the first heat exchange port.

16. The integrated heat exchanger according to any one of claims 13-15, characterized in that, The dual-path heat exchanger is a plate heat exchanger.

17. An air conditioning system, characterized in that, include: A four-way valve, comprising a first valve port, a second valve port, a third valve port, and a fourth valve port; The compressor includes an inlet end and an outlet end, the outlet end being connected to the first valve port and the inlet end being connected to the third valve port; An outdoor heat exchanger, one end of which is connected to the second valve port of the four-way valve; An indoor heat exchange unit, the indoor heat exchange unit including at least one indoor heat exchanger, one end of the indoor heat exchange unit being connected to the fourth valve port of the four-way valve; According to any one of claims 13-16, in the integrated heat exchange device, the first heat exchange port is connected to the other end of the indoor heat exchange unit, the fourth heat exchange port is connected to the air inlet or air supply port of the compressor, and the first interface is connected to the other end of the outdoor heat exchanger.

18. The air conditioning system according to claim 17, characterized in that, The indoor heat exchange unit includes at least one indoor branch, on which an indoor heat exchanger, an indoor throttling device and an indoor filter are arranged in series. The indoor heat exchanger is connected to the fourth valve port, and the indoor filter is connected to the first heat exchange port of the integrated heat exchange device. When there are at least two indoor branch lines, they are connected in parallel.

19. The air conditioning system according to claim 18, characterized in that, The air conditioning system has a first operating state and a second operating state; When the air conditioning system is in the first operating state, the refrigerant discharged by the compressor flows into the first valve chamber from the first interface and flows out of the second valve chamber through the second interface and the third interface after being throttled by the valve port. When the air conditioning system is in the second operating state, after the fluid flows into the second valve chamber from the third interface, part of the fluid flows out of the first valve chamber through the first interface after being throttled by the valve port, and the other part of the fluid flows out of the second valve chamber through the second interface without passing through the valve port.

Images