One-way valve assembly and air conditioning system
By designing a float check valve assembly to achieve automatic switching of the refrigerant flow path, the problem of external control in the switching of the refrigerant flow path in the air conditioning system is solved, and the working reliability and stability are improved.
Patent Information
- Application Number
- CN202422170376.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In existing air conditioning systems, refrigerant flow path switching requires external components to control it, and automatic switching cannot be achieved, and the working reliability is poor.
A check valve assembly is designed, including a plurality of float check valves connected through a connecting pipe, which can automatically adjust the flow direction according to the refrigerant flow inflow direction and realize automatic switching of the refrigerant flow path.
It improves the working reliability and stability of the air conditioning system, reduces the use of control components, and reduces the difficulty of operation.
Smart Images
Figure CN223121730U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of air-conditioning systems, for example, to a check valve assembly and an air-conditioning system. Background Art
[0002] An air-conditioning system usually has a cooling mode and a heating mode. By circulating refrigerant in a loop formed by a compressor - outdoor heat exchanger - throttling component - indoor heat exchanger - compressor, the indoor temperature, humidity, etc. can be improved, enhancing user comfort. With the development of technology and the improvement of people's living standards, people have higher and higher requirements for the functions of air-conditioning systems, and also require the air-conditioning system to have various functions such as dehumidification and self-cleaning.
[0003] In various working modes of an air conditioner, the switching of the refrigerant flow path is a key technology. For example, an electromagnetic valve or a mechanical valve is set, and the switching of the refrigerant flow path is achieved by controlling the opening and closing of the valve. However, when switching the refrigerant flow path of the electromagnetic valve or the mechanical valve, an electric control element operation or manual operation needs to be set, and external components are required for control during use, and automatic switching of the flow path cannot be achieved, resulting in poor working reliability.
[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model
[0005] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.
[0006] The embodiments of the present disclosure provide a check valve assembly and an air-conditioning system, so as to be able to automatically adjust the flow direction of the refrigerant in the check valve assembly according to the inflow direction of the refrigerant, improving working reliability.
[0007] According to the first embodiment provided by the present application, a check valve assembly is provided. The check valve assembly includes a plurality of check valves connected by a connecting pipe. The plurality of check valves include a first check valve, a second check valve, a third check valve, and a fourth check valve. The check valve assembly is provided with a first port, a second port, a refrigerant inlet, and a refrigerant outlet, and the first port, the second port, the refrigerant inlet, and the refrigerant outlet are respectively used to communicate with external components. Among them, a first check valve is provided between the first port and the refrigerant outlet, a second check valve is provided between the second port and the refrigerant outlet, a third check valve is provided between the refrigerant inlet and the second port, and a fourth check valve is provided between the refrigerant inlet and the first port. The first port can communicate with the refrigerant outlet, and the refrigerant inlet can communicate with the second port; or, the second port can communicate with the refrigerant outlet, and the refrigerant inlet can communicate with the first port.
[0008] In some alternative embodiments, some or all of the plurality of check valves are float check valves.
[0009] In some alternative embodiments, the first check valve is a first float check valve, and the setting height of the inlet end of the first float check valve is lower than the setting height of the outlet end of the first float check valve; the second check valve is a second float check valve, and the setting height of the inlet end of the second float check valve is lower than the setting height of the outlet end of the second float check valve; the third check valve is a third float check valve, and the setting height of the inlet end of the third float check valve is lower than the setting height of the outlet end of the third float check valve; the fourth check valve is a fourth float check valve, and the setting height of the inlet end of the fourth float check valve is lower than the setting height of the outlet end of the fourth float check valve.
[0010] In some alternative embodiments, along the horizontal direction, the first float check valve, the second float check valve, the third float check valve, and the fourth float check valve are arranged in sequence.
[0011] In some alternative embodiments, along the horizontal direction, the first float check valve, the second float check valve, the third float check valve, and the fourth float check valve are arranged in an array.
[0012] In some alternative embodiments, the float check valve includes: a valve body, enclosing an internal passage having an inlet end and an outlet end; a valve seat, disposed in the internal passage, provided with a flow port; a valve core, disposed in the internal passage and located on the side of the valve seat facing the outlet end of the internal passage, for opening or closing the flow port.
[0013] In some alternative embodiments, the connecting pipe includes: a first connecting pipe with two ends respectively connected to the outlet end of the first check valve and the outlet end of the second check valve, and is provided with a refrigerant outlet; a second connecting pipe with two ends respectively connected to the inlet end of the second check valve and the outlet end of the fourth check valve, and is provided with a second port; a third connecting pipe with two ends respectively communicating with the inlet end of the third check valve and the inlet end of the fourth check valve, and is provided with a refrigerant inlet; a fourth connecting pipe with two ends respectively communicating with the outlet end of the fourth check valve and the inlet end of the first check valve, and is provided with a first port.
[0014] In some alternative embodiments, the check valve assembly further includes: a housing, in which the first check valve, the second check valve, the third check valve and the fourth check valve are respectively arranged, and the housing is provided with a plurality of through holes for the first port, the second port, the refrigerant inlet and the refrigerant outlet to communicate with external components respectively.
[0015] According to the second embodiment provided by the present application, an air conditioning system is provided, and the air conditioning system includes the check valve assembly as described in any one of the foregoing.
[0016] In some alternative embodiments, the air conditioning system further includes: a heat exchange circuit including a compressor, a four-way valve, an indoor heat exchanger, a throttling device and an outdoor heat exchanger connected by pipelines. The first port of the check valve assembly is connected to the four-way valve, the second port is connected to the throttling device, the refrigerant inlet is connected to the outlet end of the indoor heat exchanger, and the refrigerant outlet is connected to the inlet end of the indoor heat exchanger.
[0017] The check valve assembly and the air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:
[0018] In this embodiment, when the refrigerant flows in from the first port or the second port, there are two different refrigerant flow paths in the check valve group. By setting the first check valve, the second check valve, the third check valve and the fourth check valve, it is possible to make the refrigerant have different flow paths when flowing in from different ports, realizing the automatic switching of the refrigerant flow path, reducing the use of control components, lowering the operation difficulty, and improving the working stability of the check valve assembly.
[0019] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are regarded as similar elements. The drawings do not constitute a proportional limitation, and among them:
[0021] Figure 1 is a schematic structural diagram of a check valve assembly provided by an embodiment of the present disclosure;
[0022] Figure 2 It is a schematic structural diagram of another one-way valve assembly provided by an embodiment of the present disclosure;
[0023] Figure 3 It is a schematic structural diagram of an air-conditioning system provided by an embodiment of the present disclosure;
[0024] Figure 4 It is a schematic structural diagram of another air-conditioning system provided by an embodiment of the present disclosure;
[0025] Figure 5 It is a schematic structural diagram of yet another air-conditioning system provided by an embodiment of the present disclosure;
[0026] Figure 6 It is a schematic structural diagram of yet another air-conditioning system provided by an embodiment of the present disclosure.
[0027] Reference numerals:
[0028] 100, compressor; 200, four-way valve; 300, outdoor heat exchanger; 400, throttling device; 500, indoor heat exchanger; 600, one-way valve assembly; 610, first one-way valve; 620, second one-way valve; 630, third one-way valve; 640, fourth one-way valve; 650, first connecting pipe; 660, second connecting pipe; 670, third connecting pipe; 680, fourth connecting pipe. Detailed implementation manners
[0029] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and illustration purposes and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.
[0030] The terms "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.
[0031] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0032] In addition, the terms "arrange", "connect", "install" should be understood in a broad sense. For example, "connect" can be a mounting connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0033] The term "and / or" is a description of the association relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.
[0034] It should be noted that, without conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.
[0035] The embodiments of the present disclosure provide a check valve assembly 600, as Figure 1 and Figure 2 shown, the check valve assembly 600 includes a plurality of check valves connected by a connecting pipe. The plurality of check valves include a first check valve 610, a second check valve 620, a third check valve 630, and a fourth check valve 640. The check valve assembly 600 is provided with a first port, a second port, a refrigerant inlet, and a refrigerant outlet. The first port, the second port, the refrigerant inlet, and the refrigerant outlet are respectively used to communicate with external components.
[0036] Wherein, a first check valve 610 is provided between the first port and the refrigerant outlet, a second check valve 620 is provided between the second port and the refrigerant outlet, a third check valve 630 is provided between the refrigerant inlet and the second port, and a fourth check valve 640 is provided between the refrigerant inlet and the first port.
[0037] The first port can communicate with the refrigerant outlet, and the refrigerant inlet can communicate with the second port; or, the second port can communicate with the refrigerant outlet, and the refrigerant inlet can communicate with the first port.
[0038] In this embodiment, the one-way valve assembly 600 is provided with a first port, a second port, a refrigerant outlet and a refrigerant inlet. The first port, the second port, the refrigerant inlet and the refrigerant outlet are respectively communicated with external components, so that external refrigerant can flow in the internal path of the one-way valve group and realize the automatic switching of the refrigerant flow path.
[0039] In a refrigerant flow path, as Figure 3 and Figure 5 shown, the first port can be communicated with the refrigerant outlet, and the refrigerant inlet can be communicated with the second port. That is to say, the refrigerant of the external component can flow in from the first port and flow out from the refrigerant outlet, and the refrigerant can also flow in from the refrigerant inlet and flow out from the second port. The refrigerant in the one-way valve assembly 600 has two flow paths: "from the first port to the refrigerant outlet" and "from the refrigerant inlet to the second port".
[0040] In another refrigerant flow path, as Figure 4 and Figure 6 shown, the second port can be communicated with the refrigerant outlet, and the refrigerant inlet can be communicated with the first port. That is to say, the refrigerant of the external component can flow in from the second port and flow out from the refrigerant outlet, and the condensate can also flow in from the refrigerant inlet and flow out from the second port. The refrigerant in the one-way valve assembly 600 has two flow paths: "from the second port to the refrigerant outlet" and "from the refrigerant inlet to the first port". In this way, when the refrigerant flows in from the first port or the second port, there are two different refrigerant flow paths in the one-way valve group. By setting the first one-way valve 610, the second one-way valve 620, the third one-way valve 630 and the fourth one-way valve 640, the refrigerant can have different flow paths when flowing in from different ports, realizing the automatic switching of the refrigerant flow path, reducing the use of control components, lowering the operation difficulty, and improving the working stability of the one-way valve assembly 600.
[0041] In this embodiment, the refrigerant flows out unidirectionally at the refrigerant outlet, flows in unidirectionally at the refrigerant inlet, and can flow bidirectionally at the first port and the second port. A first check valve 610 is provided between the first port and the refrigerant outlet. The first port can communicate with the refrigerant outlet. That is to say, the inlet end of the first check valve 610 communicates with the first port, and the outlet end of the first check valve 610 communicates with the refrigerant outlet. A second check valve 620 is provided between the second port and the refrigerant outlet. The second port can communicate with the refrigerant outlet. That is to say, the inlet end of the second check valve 620 communicates with the second port, and the outlet end of the second check valve 620 communicates with the refrigerant outlet. A third check valve 630 is provided between the refrigerant inlet and the second port. The refrigerant inlet can communicate with the second port. That is to say, the inlet end of the third check valve 630 communicates with the refrigerant inlet, and the outlet end of the third check valve 630 communicates with the second port. A fourth check valve 640 is provided between the refrigerant inlet and the first port. The refrigerant inlet can communicate with the first port. That is to say, the inlet end of the fourth check valve 640 communicates with the refrigerant inlet, and the outlet end of the fourth check valve 640 communicates with the first port.
[0042] Exemplarily, as Figures 3 to 6 shown, the check valve assembly 600 is used for an air conditioning system. The air conditioning system includes a heat exchange circuit, and the heat exchange circuit includes a compressor 100, a four-way valve 200, an indoor heat exchanger 500, a throttling device 400, and an outdoor heat exchanger 300 connected by pipelines.
[0043] The first port is used to communicate with the first valve port of the four-way valve 200, the second port is used to communicate with the throttling device 400, the refrigerant outlet is used to communicate with the inlet end of the indoor heat exchanger 500, and the refrigerant inlet is used to communicate with the outlet end of the indoor heat exchanger 500; or, the first port is used to communicate with the outlet end of the indoor heat exchanger 500, the second port is used to communicate with the inlet end of the outdoor heat exchanger 300, the refrigerant outlet is used to communicate with the inlet end of the throttling device 400, and the refrigerant inlet is used to communicate with the outlet of the throttling device 400; or, the first port is used to communicate with the outlet end of the throttling device 400, the second port is used to communicate with the second valve port of the four-way valve 200, the refrigerant outlet is used to communicate with the inlet end of the outdoor heat exchanger 300, and the refrigerant inlet is used to communicate with the outlet end of the indoor heat exchanger 500.
[0044] Taking the case where the first port is used to communicate with the first valve port of the four-way valve 200, the second port is used to communicate with the throttling device 400, the refrigerant outlet is used to communicate with the inlet end of the indoor heat exchanger 500, and the refrigerant inlet is used to communicate with the outlet end of the indoor heat exchanger 500 as an example, in this embodiment, the second valve port of the four-way valve 200 communicates with the outdoor heat exchanger 300, the third valve port of the four-way valve 200 communicates with the inlet end of the compressor 100, and the fourth valve port of the four-way valve 200 communicates with the outlet end of the compressor 100.
[0045] As Figure 4 and Figure 6 shown, when the air-conditioning system operates in the cooling mode, the second valve port communicates with the fourth valve port, and the first valve port communicates with the third valve port. The high-temperature and high-pressure refrigerant flowing out of the compressor 100 passes through the four-way valve 200 and flows to the outdoor heat exchanger 300. The refrigerant condenses and releases heat in the outdoor heat exchanger 300, and after the heat exchange is completed, it passes through the throttling device 400 to reduce the pressure by throttling. At this time, the refrigerant flows into the second port, and flows through the second port and the refrigerant outlet to the indoor heat exchanger 500. After the heat exchange in the indoor heat exchanger 500 is completed, it flows through the refrigerant inlet and the first port to the first valve port of the four-way valve 200, and then flows back to the intake port of the compressor 100 through the third valve port to complete a refrigeration cycle.
[0046] The inlet end of the second check valve 620 communicates with the second port, and the outlet end of the second check valve 620 communicates with the refrigerant outlet. The outlet end of the third check valve 630 communicates with the second port, so that the second check valve 620 and the third check valve 630 can make the refrigerant flowing into the second port flow out through the refrigerant outlet.
[0047] The inlet end of the fourth check valve 640 communicates with the refrigerant inlet, the outlet end of the fourth check valve 640 communicates with the first port, the inlet end of the third check valve 630 communicates with the refrigerant inlet, and the outlet end of the third check valve 630 communicates with the second port. The pressure of the refrigerant flowing into the check valve assembly 600 through the second port by the throttling device 400 is greater than the pressure of the refrigerant flowing into the check valve assembly 600 through the refrigerant inlet from the indoor heat exchanger 500, so that the refrigerant flowing out of the indoor heat exchanger 500 can flow through the refrigerant inlet and the fourth check valve 640 in sequence and then flow out from the first port to flow to the four-way valve 200.
[0048] As Figure 3 and Figure 5 shown, when the air-conditioning system operates in the heating mode, the second valve port communicates with the third valve port, and the first valve port communicates with the fourth valve port. The high-temperature and high-pressure refrigerant flowing out of the compressor 100 passes through the four-way valve 200 and then flows to the first port of the check valve assembly 600, and flows into the indoor heat exchanger 500 through the refrigerant outlet of the check valve assembly 600. The refrigerant releases heat in the indoor heat exchanger 500, and after the heat exchange is completed, it flows through the refrigerant inlet and the second port to the throttling device 400, and after being throttled and depressurized by the throttling device 400, it flows into the outdoor heat exchanger 300. After evaporating and absorbing heat in the outdoor heat exchanger 300, it flows back into the compressor 100 through the fourth valve port and the third valve port to complete a heating cycle.
[0049] The inlet end of the first check valve 610 communicates with the first port, the outlet end of the first check valve 610 communicates with the refrigerant outlet, and the outlet end of the fourth check valve 640 communicates with the first port, so that the first check valve 610 and the fourth check valve 640 can make the refrigerant flowing into the first port flow out through the refrigerant outlet.
[0050] The inlet end of the third one-way valve 630 is in communication with the refrigerant inlet, the outlet end of the third one-way valve 630 is in communication with the second port, the inlet end of the second one-way valve 620 is in communication with the second port, and the outlet end of the second one-way valve 620 is in communication with the refrigerant outlet. Since the high-temperature and high-pressure refrigerant flowing out of the compressor 100 flows through the refrigerant outlet at this time, the refrigerant pressure at the outlet end of the second one-way valve 620 is greater than the pressure at the inlet end of the second one-way valve 620, so that the refrigerant flowing out of the indoor heat exchanger 500 can flow through the refrigerant inlet and the third one-way valve 630 in sequence and then flow out from the second port to flow to the throttling device 400.
[0051] In this way, by providing the first one-way valve 610, the second one-way valve 620, the third one-way valve 630 and the fourth one-way valve 640, the refrigerant can be automatically switched in different modes, and the refrigerant flow path in the indoor heat exchanger 500 is unique, so that when the air-conditioning system switches the working mode, the flow direction of the refrigerant in the indoor heat exchanger 500 is not changed, and the refrigerant can quickly respond to the flow direction of the heat exchange circuit, improving the switching efficiency.
[0052] In some alternative embodiments, some or all of the plurality of one-way valves are float-type one-way valves.
[0053] In this embodiment, when the one-way valve is a float-type one-way valve, the installation height of the inlet end of the float-type one-way valve is lower than the installation height of the outlet end of the float-type one-way valve. In this way, when the refrigerant pressures on both sides of the float-type one-way valve are the same, or the sum of the pressure exerted by the pressure at the outlet end of the float-type one-way valve on the valve core and the gravity of the valve core is greater than the pressure exerted by the pressure at the outlet end of the float-type one-way valve on the valve core, the float-type one-way valve can still be in a cut-off state, reducing the occurrence of liquid leakage that is likely to occur when the one-way valve is set to be horizontally placed or the installation height of the outlet end is lower than the installation height of the inlet end, and improving the working stability of the one-way valve assembly 600.
[0054] Some or all of the plurality of one-way valves are float-type one-way valves, and those skilled in the art can set the number of float-type one-way valves according to actual needs, which is not specifically limited herein.
[0055] In some alternative embodiments, the float-type one-way valve includes a valve body, a valve seat and a valve core. The valve body encloses an internal passage having an inlet end and an outlet end. The valve seat is disposed in the internal passage, and the valve seat is provided with a flow port.
[0056] The valve core is disposed in the internal passage, and the valve core is located on the side of the valve seat facing the outlet end of the internal passage. The valve core is used to open or close the flow port.
[0057] In this embodiment, the installation height of the inlet end of the float type check valve is lower than that of the outlet end of the float type check valve. That is to say, vertically, the valve core is arranged above the valve seat. In this way, when the refrigerant flows from the inlet end to the outlet end and the pressure at the inlet end is greater than that at the outlet end, the refrigerant can overcome the gravity of the valve core to open the flow port, and the float type check valve is connected. When the refrigerant flows from the outlet end to the inlet end, the gravity of the refrigerant and the valve core will press the valve core on the valve seat to close the flow port and cut off the float type check valve, so that the refrigerant does not flow.
[0058] Exemplarily, as Figure 1 and Figure 2 shown, the first check valve 610 is a first float type check valve, and the installation height of the inlet end of the first float type check valve is lower than that of the outlet end of the first float type check valve. The second check valve 620 is a second float type check valve, and the installation height of the inlet end of the second float type check valve is lower than that of the outlet end of the second float type check valve. The third check valve 630 is a third float type check valve, and the installation height of the inlet end of the third float type check valve is lower than that of the outlet end of the third float type check valve. The fourth check valve 640 is a fourth float type check valve, and the installation height of the inlet end of the fourth float type check valve is lower than that of the outlet end of the fourth float type check valve.
[0059] In this embodiment, the first check valve 610, the second check valve 620, the third check valve 630 and the fourth check valve 640 are all float type check valves, so as to further improve the anti-leakage effect of the check valve assembly 600 and improve the stability and reliability of the operation of the check valve assembly 600.
[0060] Exemplarily, as Figure 1 、 Figure 3 and Figure 4 shown, horizontally, the first float type check valve, the second float type check valve, the third float type check valve and the fourth float type check valve are arranged in an array.
[0061] In this embodiment, the first float type check valve, the second float type check valve, the third float type check valve and the fourth float type check valve are arranged in an array, which is convenient for the connection between the corresponding check valves, can shorten the length between the corresponding connecting pipes, reduce the resistance of the refrigerant during the flow process, improve the flow efficiency of the refrigerant, and thus improve the overall energy efficiency of the air conditioning system.
[0062] Optionally, as Figure 2 、 Figure 5 and Figure 6 shown, horizontally, the first float type check valve, the second float type check valve, the third float type check valve and the fourth float type check valve are arranged in sequence.
[0063] In this embodiment, along the transverse direction, the first float-type one-way valve, the second float-type one-way valve, the third float-type one-way valve, and the fourth float-type one-way valve are arranged in sequence, which facilitates the user to identify different one-way valves through the set positions and improves the installation efficiency.
[0064] In some alternative embodiments, as Figure 1 , Figure 2 , Figure 3 and Figure 6 shown, the connecting pipe includes a first connecting pipe 650, a second connecting pipe 660, a third connecting pipe 670, and a fourth connecting pipe 680. The two ends of the first connecting pipe 650 are respectively connected to the outlet end of the first one-way valve 610 and the outlet end of the second one-way valve 620, and the first connecting pipe 650 is provided with a refrigerant outlet. The two ends of the second connecting pipe 660 are respectively connected to the inlet end of the second one-way valve 620 and the outlet end of the fourth one-way valve 640, and the second connecting pipe 660 is provided with a second port. The two ends of the third connecting pipe 670 are respectively communicated with the inlet end of the third one-way valve 630 and the inlet end of the fourth one-way valve 640, and the third connecting pipe 670 is provided with a refrigerant inlet. The two ends of the fourth connecting pipe 680 are respectively communicated with the outlet end of the fourth one-way valve 640 and the inlet end of the first one-way valve 610, and the fourth connecting pipe 680 is provided with a first port.
[0065] In this embodiment, by providing the first connecting pipe 650, the second connecting pipe 660, the third connecting pipe 670, and the fourth connecting pipe 680, multiple one-way valves can be connected according to the set requirements, reducing the complexity and manufacturing cost of the one-way valve assembly 600 and improving the reliability and maintenance convenience of the one-way valve assembly 600.
[0066] In some embodiments, the one-way valve assembly 600 further includes a housing. The first one-way valve 610, the second one-way valve 620, the third one-way valve 630, and the fourth one-way valve 640 are respectively arranged in the housing, and the housing is provided with a plurality of through holes for the first port, the second port, the refrigerant inlet, and the refrigerant outlet to communicate with external components respectively.
[0067] In this embodiment, the first one-way valve 610, the second one-way valve 620, the third one-way valve 630, and the fourth one-way valve 640 are respectively arranged in the housing. That is to say, the one-way valve assembly 600 is integrated into a single component, which facilitates mass production and sales.
[0068] The housing is provided with a plurality of through holes for the first port, the second port, the refrigerant inlet, and the refrigerant outlet to communicate with external components respectively. In this way, the user can realize the connection between the external components and the first port, the second port, the refrigerant inlet, and the refrigerant outlet respectively through the plurality of through holes outside the housing, which is convenient for the user to install and improves the user experience.
[0069] Optionally, the connecting pipe further includes a fifth connecting pipe. One end of the fifth connecting pipe communicates with the first port, and the other end of the fifth connecting pipe passes through the first through hole and is located outside the housing. Optionally, the connecting pipe further includes a sixth connecting pipe. One end of the sixth connecting pipe communicates with the second port, and the other end of the sixth connecting pipe passes through the second through hole and is located outside the housing. Optionally, the connecting pipe further includes a seventh connecting pipe. One end of the seventh connecting pipe communicates with the refrigerant inlet, and the other end of the seventh connecting pipe passes through the third through hole and is located outside the housing. Optionally, the connecting pipe further includes an eighth connecting pipe. One end of the eighth connecting pipe communicates with the refrigerant outlet, and the other end of the eighth connecting pipe passes through the fourth through hole and is located outside the housing. The plurality of through holes include a first through hole, a second through hole, a third through hole, and a fourth through hole.
[0070] As Figures 3 to 6 shown, an embodiment of the present disclosure provides an air-conditioning system, including the check valve assembly 600 described in any one of the above embodiments.
[0071] The air-conditioning system provided by the embodiment of the present disclosure includes the check valve assembly 600 described in any one of the above embodiments, and thus has all the beneficial effects of the check valve assembly 600 described in any one of the above embodiments, which will not be elaborated here.
[0072] In some alternative embodiments, the air-conditioning system further includes a heat exchange circuit. The heat exchange circuit includes a compressor 100, a four-way valve 200, an indoor heat exchanger 500, a throttling device 400, and an outdoor heat exchanger 300 connected by pipelines. The first port of the check valve assembly 600 is connected to the four-way valve 200, the second port is connected to the throttling device 400, the refrigerant inlet is connected to the outlet end of the indoor heat exchanger 500, and the refrigerant outlet is connected to the inlet end of the indoor heat exchanger 500.
[0073] In this embodiment, by providing the first check valve 610, the second check valve 620, the third check valve 630, and the fourth check valve 640, the refrigerant can be automatically switched in different modes, and the refrigerant flow path in the indoor heat exchanger 500 is unique. When the air-conditioning system switches the working mode, the flow direction of the refrigerant in the indoor heat exchanger 500 is not changed, so that the refrigerant can quickly respond to the flow direction of the heat exchange circuit and improve the switching efficiency.
[0074] The above description and the accompanying drawings sufficiently illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A check valve assembly, characterized in that, the check valve assembly includes a plurality of check valves connected by a connecting pipe, the plurality of check valves include a first check valve, a second check valve, a third check valve and a fourth check valve, the check valve assembly is provided with a first port, a second port, a refrigerant inlet and a refrigerant outlet, and the first port, the second port, the refrigerant inlet and the refrigerant outlet are respectively used for communicating with external components; wherein, a first check valve is provided between the first port and the refrigerant outlet, a second check valve is provided between the second port and the refrigerant outlet, a third check valve is provided between the refrigerant inlet and the second port, and a fourth check valve is provided between the refrigerant inlet and the first port; the first port can communicate with the refrigerant outlet, and the refrigerant inlet can communicate with the second port; or, the second port can communicate with the refrigerant outlet, and the refrigerant inlet can communicate with the first port.
2. The check valve assembly according to claim 1, characterized in that, some or all of the plurality of check valves are float check valves.
3. The check valve assembly according to claim 2, characterized in that, the first check valve is a first float check valve, and the installation height of the inlet end of the first float check valve is lower than the installation height of the outlet end of the first float check valve; the second check valve is a second float check valve, and the installation height of the inlet end of the second float check valve is lower than the installation height of the outlet end of the second float check valve; the third check valve is a third float check valve, and the installation height of the inlet end of the third float check valve is lower than the installation height of the outlet end of the third float check valve; the fourth check valve is a fourth float check valve, and the installation height of the inlet end of the fourth float check valve is lower than the installation height of the outlet end of the fourth float check valve.
4. The check valve assembly according to claim 3, characterized in that, along the transverse direction, the first float check valve, the second float check valve, the third float check valve and the fourth float check valve are arranged in sequence.
5. The check valve assembly according to claim 3, characterized in that, along the transverse direction, the first float check valve, the second float check valve, the third float check valve and the fourth float check valve are arranged in an array.
6. The one-way valve assembly according to claim 2, wherein The float check valve includes: a valve body, enclosing an internal passage having an inlet end and an outlet end; a valve seat, provided in the internal passage and provided with a flow port; a valve core, provided in the internal passage and located on the side of the valve seat facing the outlet end of the internal passage, for opening or closing the flow port.
7. The one-way valve assembly according to any one of claims 1 to 6, characterized in that the connecting pipe including: a first connecting pipe, with two ends respectively connected to the outlet end of the first check valve and the outlet end of the second check valve, and provided with a refrigerant outlet; a second connecting pipe, with two ends respectively connected to the inlet end of the second check valve and the outlet end of the fourth check valve, and provided with a second port; a third connecting pipe, with two ends respectively communicating with the inlet end of the third check valve and the inlet end of the fourth check valve, and provided with a refrigerant inlet; a fourth connecting pipe, with two ends respectively communicating with the outlet end of the fourth check valve and the inlet end of the first check valve, and provided with a first port.
8. The one-way valve assembly according to any one of claims 1 to 6, characterized in that It further includes: A housing, a first one-way valve, a second one-way valve, a third one-way valve, and a fourth one-way valve are respectively arranged inside the housing. The housing is provided with a plurality of through holes for respectively connecting a first port, a second port, a refrigerant inlet, and a refrigerant outlet to external components.
9. An air conditioning system, characterized in that, Comprising: The one-way valve assembly according to any one of claims 1 to 8.
10. The air conditioning system according to claim 9, wherein, Further comprising: A heat exchange circuit, including a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger connected by pipelines. The first port of the one-way valve assembly is connected to the four-way valve, the second port is connected to the throttling device, the refrigerant inlet is connected to the outlet end of the indoor heat exchanger, and the refrigerant outlet is connected to the inlet end of the indoor heat exchanger.