Air conditioner

Abstract

The utility model discloses an air conditioner, relates to the field of household appliances, and aims to solve the problem that a throttle valve is inconvenient to replace. The air conditioner comprises a compressor, a first heat exchanger, a second heat exchanger, a first stop valve, a second stop valve and a throttling assembly. The compressor is used for compressing refrigerants in the air conditioner. The compressor communicates with the first end of the second heat exchanger. The compressor communicates with the first end of the first heat exchanger through a first stop valve. The second stop valve comprises a main body part and a first connector connected to the main body part, and a mounting channel is formed in the first connector. The main body part communicates with the second end of the second heat exchanger and communicates with the second end of the first heat exchanger through the mounting channel. The body part is used for controlling opening and closing of the second stop valve. And the throttling assembly is arranged in the mounting channel and communicates with the main body part and the second end of the first heat exchanger. The throttling assembly is connected with the peripheral wall face of the mounting channel in a sealed mode and detachably connected with the first connector. The method is used for adjusting the indoor temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an air conditioner. Background Art

[0002] The refrigerant circulation system of the air conditioner includes a compressor, an indoor heat exchanger, a throttle valve and an outdoor heat exchanger which are sequentially connected through a refrigerant pipeline, and two stop valves are also connected between the indoor heat exchanger and the outdoor heat exchanger.

[0003] In the related art, the compressor, the outdoor heat exchanger and the throttle valve are arranged in the outdoor unit, the indoor heat exchanger is arranged in the indoor unit, and the two stop valves of the air conditioner are respectively installed on the refrigerant pipe between the indoor unit and the outdoor unit.

[0004] In the above-mentioned setting method of the throttle valve and the stop valve, when the throttle valve needs to be replaced, the staff needs to first close the two stop valves, then discharge all the refrigerant in the outdoor unit, and then remove the throttle valve from the refrigerant pipeline for replacement. And after the throttle valve is replaced, the outdoor unit needs to be vacuumed again and refrigerant is added. As a result, the replacement process of the throttle valve is complicated and it is not convenient to replace the throttle valve. Utility Model Content

[0005] An embodiment of the utility model provides an air conditioner for solving the problem of inconvenience in replacing a throttle valve.

[0006] To achieve the above-mentioned object, in the first aspect of the present application, an air conditioner is provided, comprising a compressor, a first heat exchanger, a second heat exchanger, a four-way valve, a first stop valve, a second stop valve and a throttling assembly. The compressor is used to compress the refrigerant in the air conditioner. The four-way valve comprises a first port, a second port, a third port and a fourth port. The air outlet of the compressor is communicated with the first port. The second port is communicated with the first end of the first heat exchanger through the first stop valve. The third port is communicated with the return air port of the compressor, and the fourth port is communicated with the first end of the second heat exchanger. The first port is in reciprocating communication with one of the second port and the fourth port, and the third port is in reciprocating communication with one of the second port and the fourth port, so that the air conditioner switches between a heating mode and a cooling mode. The second stop valve comprises a main body and a first joint connected to the main body, and an installation channel is formed in the first joint. The main body is in communication with the second end of the second heat exchanger, and is communicated with the second end of the first heat exchanger through the installation channel. The main body is used to control the switch of the second stop valve. The throttling assembly is arranged in the installation channel and communicates with the main body and the second end of the first heat exchanger. The throttling assembly is sealingly connected to the peripheral wall surface of the installation channel and is detachably connected to the first joint.

[0007] Through the above arrangement, since the throttling component is sealed in the installation channel, the refrigerant entering the installation channel will all flow through the throttling component, thereby realizing the throttling function of the throttling component.

[0008] When the throttling component needs to be replaced, the refrigerant can be first compressed into the compressor, the second heat exchanger and the pipe connecting the two through the compressor, thereby disconnecting the first joint and the second end of the first heat exchanger to expose the throttling component in the installation channel. Since the throttling component is detachably connected to the first joint, the staff can directly remove the throttling component to be replaced from the installation channel, and then reseal the new throttling component in the installation channel to achieve the replacement of the throttling component.

[0009] In this way, the throttling component can be replaced without releasing the refrigerant in the second heat exchanger, and since the refrigerant is completely compressed in the compressor, the second heat exchanger and the pipe connecting the two, there is no need to refill the refrigerant into the outdoor unit after replacing the throttling component. This can simplify the replacement process of the throttling component and facilitate the replacement of the throttling component.

[0010] In some embodiments of the present application, the throttling assembly includes a valve body, a first thread is formed on the outer wall surface of the valve body, a second thread is formed on the peripheral wall surface of the installation channel, and the first thread is threadedly connected with the second thread.

[0011] Through the above-mentioned arrangement, the throttling assembly can be screwed together with the second thread on the peripheral wall surface of the mounting channel through the first thread. When installing or disassembling the throttling assembly, it is only necessary to rotate the throttling assembly so that the throttling assembly rotates relative to the first joint. In this way, a detachable connection between the throttling assembly and the first joint can be achieved, and the installation and disassembly of the throttling assembly are convenient.

[0012] In some embodiments of the present application, the throttling assembly further includes a sealing ring, the valve body passes through the sealing ring, and the valve body and the peripheral wall surface of the installation channel are respectively sealed and connected to the sealing ring.

[0013] In this way, when the refrigerant flows between the throttling assembly and the peripheral wall surface of the installation channel, since the valve body and the peripheral wall surface of the installation channel are respectively sealed with the sealing ring, the refrigerant will be blocked by the sealing ring along the circumference of the valve body and cannot continue to flow, thereby realizing the sealing setting of the throttling assembly and the first joint.

[0014] In some embodiments of the present application, a first protrusion is formed on the peripheral wall surface of the installation channel, and one end of the valve body close to the main body portion contacts the first protrusion.

[0015] Through the above arrangement, during the installation of the throttling assembly, the throttling assembly will gradually move toward the main body until it contacts the first protrusion. At this time, the first protrusion will block the throttling assembly, thereby positioning the throttling assembly to ensure the accuracy of the installation position of the throttling assembly.

[0016] In some embodiments of the present application, a first sealing surface is formed at one end of the first protrusion away from the main body, and the first sealing surface extends along the circumference of the installation channel. A first contact surface is formed at one end of the valve body close to the main body, and the first contact surface matches and contacts the first sealing surface.

[0017] Through the above arrangement, when the throttling assembly contacts the first protrusion, the first protrusion can position the throttling assembly. In addition, the first contact surface contacts the first sealing surface. Since the surface-to-surface contact has a certain sealing effect, the first contact surface and the first sealing surface can seal the throttling assembly and the first protrusion, thereby realizing the sealing arrangement of the throttling assembly and the first joint.

[0018] In some embodiments of the present application, along the direction of the first joint pointing to the main body, the distance between the first sealing surface and the axis of the mounting channel gradually increases, and the distance between the first contact surface and the axis of the mounting channel gradually increases.

[0019] Through the above arrangement, when the first contact surface and the first sealing surface are in contact, compared with the first sealing surface being a plane, the first contact surface is also a plane, and there can be a larger contact area between the first contact surface and the first sealing surface, thereby improving the sealing effect of the first contact surface and the first sealing surface on the throttling assembly and the first protrusion.

[0020] Moreover, during the installation of the throttling assembly, since the distance between the first sealing surface and the axis of the installation channel gradually increases, when the throttling assembly contacts the first sealing surface, the first sealing surface can guide the throttling assembly, thereby enabling the throttling assembly to be installed and positioned, so as to further ensure the accuracy of the installation position of the throttling assembly.

[0021] In some embodiments of the present application, a throttling channel is formed in the valve body, and the throttling channel passes through the valve body along the arrangement direction of the first joint and the main body. The throttling assembly also includes a plugging member, a first valve core and a second valve core. The plugging member is arranged in the throttling channel and is connected to the valve body. The first valve core is arranged on a side of the plugging member away from the main body, and can slide axially in the throttling channel along the throttling channel. A first main flow channel and a first secondary flow channel are formed in the first valve core, and the first main flow channel and the first secondary flow channel respectively pass through the first valve core along the arrangement direction of the first valve core and the plugging member. The second valve core is arranged on a side of the plugging member close to the main body, and can slide axially in the throttling channel along the throttling channel. A second main flow channel and a second secondary flow channel are formed in the second valve core, and the second main flow channel and the second secondary flow channel respectively pass through the second valve core along the arrangement direction of the second valve core and the plugging member.

[0022] When the air conditioner is in heating mode, the first valve core slides to contact with the blocking member, and the blocking member blocks the first secondary flow channel, the second valve core is separated from the blocking member, the first main flow channel is respectively connected with the second main flow channel and the second secondary flow channel, and the refrigerant flow rate in the first main flow channel is greater than the refrigerant flow rate in the second main flow channel. When the air conditioner is in cooling mode, the second valve core slides to contact with the blocking member, and the blocking member blocks the second secondary flow channel, the first valve core is separated from the blocking member, the second main flow channel is respectively connected with the first main flow channel and the first secondary flow channel, and the refrigerant flow rate in the second main flow channel is greater than the refrigerant flow rate in the first main flow channel.

[0023] Through the above-mentioned setting, through the cooperation of the first valve core and the second valve core, after the air conditioner switches to different working modes, the position of the first valve core in the throttling channel and the position of the second valve core in the throttling channel will change with the change of the refrigerant flow direction. When the air conditioner switches to heating mode, the refrigerant can be throttled by the first main channel. When the air conditioner switches to cooling mode, the refrigerant can be throttled by the second main channel.

[0024] In this way, the throttling component can automatically adjust the throttling effect on the refrigerant, thereby meeting the different throttling requirements of the air conditioner in cooling mode and heating mode. In this way, there is no need to set up a controller to change the throttling effect of the throttling component, so as to simplify the structure of the throttling component and facilitate the processing of the throttling component.

[0025] In some embodiments of the present application, the plugging member extends along the circumference of the throttling channel for one circle, so that a connecting channel is formed in the plugging member, and the connecting channel connects the first main flow channel and the second main flow channel. The radial dimension of the connecting channel is larger than the radial dimension of the first main flow channel, and larger than the radial dimension of the second main flow channel. And / or, the first secondary flow channel penetrates to the outer surface of the first valve core along the radial direction of the throttling channel. And / or, the second secondary flow channel penetrates to the outer surface of the second valve core along the radial direction of the throttling channel.

[0026] Through the above settings, when the air conditioner is in heating mode, the refrigerant will not be throttled by the connecting channel after being throttled by the first main channel, so as to ensure the throttling effect of the throttling component on the refrigerant when the air conditioner is in heating mode. In addition, when the air conditioner is in cooling mode, the refrigerant will not be throttled by the connecting channel after being throttled by the second main channel, so as to ensure the throttling effect of the throttling component on the refrigerant when the air conditioner is in cooling mode. In this way, when the air conditioner is in cooling mode or heating mode, the refrigerant will not be affected by the connecting channel, so as to ensure that the throttling component can throttle the refrigerant normally, thereby ensuring the normal operation of the air conditioner.

[0027] In addition, by making a groove on the first valve core to open the first secondary flow channel, it is easier to process the first secondary flow channel than to open a channel in the first valve core, thereby facilitating the processing of the first valve core. By making a groove on the second valve core to open the second secondary flow channel, it is easier to process the second secondary flow channel than to open a channel in the second valve core, thereby facilitating the processing of the second valve core.

[0028] In some embodiments of the present application, a second sealing surface is formed at one end of the blocking member close to the first valve core, a second contact surface is formed at one end of the first valve core close to the blocking member, the second contact surface matches the second sealing surface, and when the air conditioner is in heating mode, the second contact surface contacts the second sealing surface. And / or, a third sealing surface is formed at one end of the blocking member close to the second valve core, a third contact surface is formed at one end of the second valve core close to the blocking member, the third contact surface matches the third sealing surface, and when the air conditioner is in cooling mode, the third contact surface contacts the third sealing surface.

[0029] Through the above arrangement, when the first valve core contacts the plugging member, the second contact surface and the second sealing surface can seal the gap between the first valve core and the plugging member to prevent the refrigerant from flowing from the gap between the first valve core and the plugging member to the second valve core, thereby ensuring the throttling effect of the first main flow channel. When the second valve core contacts the plugging member, the third contact surface and the third sealing surface can seal the gap between the second valve core and the plugging member to prevent the refrigerant from flowing from the gap between the second valve core and the plugging member to the second valve core, thereby ensuring the throttling effect of the second main flow channel.

[0030] In a second aspect of the present application, an air conditioner is provided, comprising a compressor, a first heat exchanger, a second heat exchanger, a first stop valve, a second stop valve and a throttling assembly. The compressor is used to compress the refrigerant in the air conditioner. The compressor is connected to the first end of the second heat exchanger. The compressor is connected to the first end of the first heat exchanger through the first stop valve. The second stop valve includes a main body and a first joint connected to the main body, and an installation channel is formed in the first joint. The main body is connected to the second end of the second heat exchanger and is connected to the second end of the first heat exchanger through the installation channel. The main body is used to control the switch of the second stop valve. The throttling assembly is arranged in the installation channel and connects the main body and the second end of the first heat exchanger. The throttling assembly is sealed and connected to the peripheral wall surface of the installation channel, and is detachably connected to the first joint.

[0031] The air conditioner provided in the second aspect of the present application can achieve the same beneficial effects as the above-mentioned technical solution, so it will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the external structure of an air conditioner provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a connection relationship of an air conditioner provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of another connection relationship of the air conditioner provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of another connection relationship of the air conditioner provided in the embodiment of the present application;

[0036] Figure 5 A schematic diagram of the external structure of the second stop valve provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the internal structure of a second stop valve provided in an embodiment of the present application;

[0038] Figure 7 A schematic diagram of the internal structure of a second stop valve and a throttling assembly provided in an embodiment of the present application;

[0039] Figure 8 A schematic diagram of the external structure of a throttling component provided in an embodiment of the present application;

[0040] Fig. 9 for Figure 7 A local enlarged schematic diagram of the middle A;

[0041] Fig.10 Another schematic diagram of the external structure of the throttling assembly provided in the embodiment of the present application;

[0042] Fig.11 for Figure 7 A partial enlarged schematic diagram of point B in the middle;

[0043] Fig.12 Another schematic diagram of the internal structure of the second stop valve and the throttling assembly provided in the embodiment of the present application;

[0044] Fig.13 A schematic diagram of an external structure of a first valve core provided in an embodiment of the present application;

[0045] Fig.14 Another schematic diagram of the external structure of the first valve core provided in an embodiment of the present application;

[0046] Fig.15 One of the internal structure schematic diagrams of the throttling assembly provided in the embodiment of the present application;

[0047] Fig.16 The second schematic diagram of the internal structure of the throttling component provided in the embodiment of the present application;

[0048] Fig.17The third schematic diagram of the internal structure of the throttling component provided in the embodiment of the present application;

[0049] Fig.18 A fourth schematic diagram of the internal structure of the throttling assembly provided in an embodiment of the present application;

[0050] Fig.19 A fifth schematic diagram of the internal structure of the throttling assembly provided in an embodiment of the present application;

[0051] Fig. 20 A schematic diagram of the external structure of the first side wall provided in an embodiment of the present application.

[0052] Figure numerals: 100-air conditioner; 10-indoor unit; 20-outdoor unit; 1-first heat exchanger; 2-second heat exchanger; 3-compressor; 4-first stop valve; 5-second stop valve; 51-main body; 52-first joint; 521-installation channel; 522-second thread; 523-first protrusion; 53-control column; 6-throttling assembly; 61-valve body; 6A-throttling channel; 611-first thread; 612-installation groove; 62-sealing ring; 63-blocking member; 63A-communication channel; 64-first valve core; 64A-first main flow channel; 64B-first secondary flow channel; 641-first main body; 642-first sliding part; 64 3-first support portion; 65-second valve core; 65A-second main flow channel; 65B-second secondary flow channel; 651-second main body; 652-second sliding portion; 653-second support portion; 66-first sealing column; 67-second sealing column; 68-first side wall; 68A-first through hole; 68B-tool groove; 69-second side wall; 69A-second through hole; 7-four-way valve; 71-first port; 72-second port; 73-third port; 74-fourth port; M1-first contact surface; N1-first sealing surface; M2-second contact surface; N2-second sealing surface; M3-third contact surface; N3-third sealing surface; K1-first gap. DETAILED DESCRIPTION

[0053] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0054] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0056] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0057] In the embodiments of the present application, the words "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0058] Air conditioners are widely used in daily life as a household appliance. Air conditioners can adjust the indoor temperature so that the indoor temperature is within an appropriate range.

[0059] Based on this, the present application provides an air conditioner, such as Figure 1 As shown, the air conditioner 100 includes an indoor unit 10 and an outdoor unit 20. The indoor unit 10 is disposed indoors and includes an indoor casing. The outdoor unit 20 is disposed outdoors and includes an outdoor casing.

[0060] like Figure 2 As shown, the air conditioner 100 further includes a compressor 3 , a first heat exchanger 1 and a second heat exchanger 2 .

[0061] Specifically, the first heat exchanger 1 is disposed in the indoor casing, that is, the first heat exchanger 1 is an indoor heat exchanger, and the second heat exchanger 2 is disposed in the outdoor casing, that is, the second heat exchanger 2 is an outdoor heat exchanger. The compressor 3 is disposed in the outdoor casing.

[0062] The compressor 3 is used to compress the refrigerant in the air conditioner 100. Specifically, the compressor 3, the first heat exchanger 1, the second heat exchanger 2, and the pipes connected between the compressor 3, the first heat exchanger 1, and the second heat exchanger 2 together constitute a refrigerant circuit, and the compressor 3 compresses the refrigerant in the air conditioner 100 so that the refrigerant circulates in the refrigerant circuit.

[0063] Exemplarily, the air conditioner 100 has only a heating function, in which case the first heat exchanger 1 is a condenser, the second heat exchanger 2 is an evaporator, the return air port of the compressor 3 is connected to the second heat exchanger 2, and the air outlet of the compressor 3 is connected to the first heat exchanger 1. At this time, the air conditioner 100 is in a heating mode, that is, the air conditioner 100 is a heating air conditioner 100, and the high-temperature air compressed by the compressor 3 enters the first heat exchanger 1 and condenses to release heat, and evaporates and absorbs heat when flowing into the second heat exchanger 2, thereby continuously heating the room.

[0064] Exemplarily, the air conditioner 100 has only a cooling function. At this time, the first heat exchanger 1 is an evaporator, the second heat exchanger 2 is a condenser, the return air port of the compressor 3 is connected to the first heat exchanger 1, and the air outlet of the compressor 3 is connected to the second heat exchanger 2. At this time, the air conditioner 100 is in a cooling mode, that is, the air conditioner 100 is a refrigeration air conditioner 100. The refrigerant condenses in the second heat exchanger 2 to release heat and then enters the first heat exchanger 1, and then evaporates to absorb heat in the room, thereby continuously cooling the room.

[0065] In order to enable the air conditioner 100 to switch between the heating mode and the cooling mode and improve the applicability of the air conditioner 100, in some embodiments, such as Figure 3 As shown, the air conditioner 100 further includes a four-way valve 7 , and the four-way valve 7 includes a first port 71 , a second port 72 , a third port 73 and a fourth port 74 .

[0066] The air outlet of the compressor 3 is communicated with the first port 71 , and the second port 72 is communicated with the first stop valve 4 .

[0067] The third port 73 is communicated with the air return port of the compressor 3 , and the fourth port 74 is communicated with the first end of the second heat exchanger 2 .

[0068] The first port 71 is switched to one of the second port 72 and the fourth port 74 , and the third port 73 is switched to the other of the second port 72 and the fourth port 74 , so that the air conditioner 100 is switched between the heating mode and the cooling mode.

[0069] Specifically, Figure 3As shown, when the first port 71 is connected to the second port 72, the third port 73 and the fourth port 74 are connected. At this time, the air conditioner 100 is in the heating mode, the first heat exchanger 1 is a condenser, and the second heat exchanger 2 is an evaporator. The refrigerant flows out from the air outlet of the compressor 3, flows to the first stop valve 4 through the first port 71 and the second port 72, and enters the first heat exchanger 1. After condensing and releasing heat in the first heat exchanger 1, it flows to the second stop valve 5, is throttled by the throttling component 6, and enters the second heat exchanger 2. After evaporating and absorbing heat in the second heat exchanger 2, it flows into the return air port of the compressor 3 through the fourth port 74 and the third port 73 to re-enter the compressor 3 to realize the heating function of the air conditioner 100.

[0070] like Figure 4 As shown, when the first port 71 is connected to the fourth port 74, the third port 73 is connected to the second port 72. At this time, the air conditioner 100 is in the cooling mode, the first heat exchanger 1 is the evaporator, and the second heat exchanger 2 is the condenser. The refrigerant flows out from the air outlet of the compressor 3, flows into the second heat exchanger 2 through the first port 71 and the fourth port 74, condenses and releases heat in the second heat exchanger 2, flows to the second stop valve 5, enters the first heat exchanger 1 after being throttled by the throttling component 6, evaporates and absorbs heat in the first heat exchanger 1, flows to the first stop valve 4, and then flows into the return air port of the compressor 3 through the second port and the third port 73 to re-enter the compressor 3 to realize the cooling function of the air conditioner 100.

[0071] In some embodiments, Figure 1 , Figure 2 As shown, the air conditioner 100 further includes a first stop valve 4. The compressor 3 is connected to the first end of the first heat exchanger 1 through the first stop valve 4.

[0072] like Figure 1 , Figure 2 As shown, the air conditioner 100 further includes a second stop valve 5. Figure 5 , Figure 6 As shown, the second stop valve 5 includes a main body 51 and a first joint 52 connected to the main body 51, and a mounting channel 521 is formed in the first joint 52. The main body 51 is communicated with the second end of the second heat exchanger 2, and is communicated with the second end of the first heat exchanger 1 through the mounting channel 521. The main body 51 is used to control the switch of the second stop valve 5.

[0073] Specifically, Figure 6 As shown, the main body 51 is formed with a merging cavity which is in communication with both the mounting channel 521 and the second end of the second heat exchanger 2 .

[0074] like Figure 5 As shown, the second stop valve 5 further includes a control column 53 , which is screwed to a side of the main body 51 away from the first joint 52 , and is used to control the on and off of the main body 51 .

[0075] Specifically, the control column 53 partially extends into the merging cavity, and the axial direction of the control column 53 is consistent with the arrangement direction of the main body portion 51 and the first joint 52 .

[0076] The staff can rotate the control column 53 to move the control column 53 toward the installation channel 521, move the control column 53 to the end where the installation channel 521 communicates with the merging cavity, and block the opening of the end where the installation channel 521 communicates with the merging cavity, so as to close the second stop valve 5. When the second stop valve 5 needs to be opened, it is only necessary to rotate the control column 53 to move the control column 53 away from the installation channel 521.

[0077] Through the setting of the first stop valve 4 and the second stop valve 5, the first stop valve 4 can control the opening and closing of the pipeline between the compressor 3 and the first end of the first heat exchanger 1, and the second stop valve 5 can control the opening and closing of the pipeline between the second end of the second heat exchanger 2 and the second end of the first heat exchanger 1.

[0078] In the related art, the air conditioner 100 further includes a throttle valve, the compressor 3, the second heat exchanger 2 and the throttle valve are arranged in the outdoor unit, the first heat exchanger is arranged in the indoor unit, and the first stop valve 4 and the second stop valve 5 are respectively installed on the pipeline between the indoor unit and the outdoor unit. In the above-mentioned throttle valve arrangement, when the throttle valve needs to be replaced, the staff needs to first close the first stop valve 4 and the second stop valve 5, and then disconnect the second end of the second heat exchanger 2 and the second stop valve 5 to release all the refrigerant in the outdoor unit 20, and then remove the throttle valve from the refrigerant pipeline for replacement. And after the throttle valve is replaced, it is necessary to evacuate the outdoor unit 20 again and add refrigerant, which makes the replacement process of the throttle valve more complicated and inconvenient to replace the throttle valve.

[0079] Based on this, Figure 7 , Figure 8 As shown, the air conditioner 100 in the present application further includes a throttling assembly 6, which is arranged in the installation channel 521 and connects the main body 51 and the second end of the first heat exchanger 1. The throttling assembly 6 is sealed and connected to the peripheral wall surface of the installation channel 521, and is detachably connected to the first joint 52.

[0080] It should be noted that the first stop valve 4 and the second stop valve 5 can be closed, and then the refrigerant is compressed by the compressor 3 into the compressor 3, the second heat exchanger 2 and the pipeline connecting the two.

[0081] Specifically, Figure 2As shown, take the air conditioner 100 in heating mode as an example: first, operate the air conditioner 100 normally to allow the refrigerant to circulate in the refrigerant circuit, and then close the first stop valve 4. After the refrigerant flows out from the air outlet of the compressor 3, it will be blocked by the first stop valve 4 and cannot continue to flow into the first heat exchanger 1. In this state, the air conditioner 100 continues to operate for a certain period of time. After all the refrigerant in the first heat exchanger 1 flows into the second heat exchanger 2, close the second stop valve 5, so that the refrigerant is completely compressed in the compressor 3, the second heat exchanger 2 and the pipe connecting the two through the compressor.

[0082] It should be noted that if all the refrigerant in the air conditioner 100 is compressed in the first heat exchanger 1, the pressure in the pipe of the first heat exchanger 1, the pipe between the first end of the first heat exchanger 1 and the first stop valve 4, and the pipe between the second end of the first heat exchanger 1 and the second stop valve 5 is too high, which may cause problems such as pipe bursting, so the refrigerant cannot be completely compressed in the first heat exchanger 1. Through the above arrangement, since the throttling component 6 is sealed in the installation channel 521, the refrigerant entering the installation channel 521 will all flow through the throttling component 6, thereby realizing the throttling function of the throttling component 6.

[0083] When the throttling component 6 needs to be replaced, the refrigerant can be first compressed into the compressor 3, the second heat exchanger 2 and the pipe connecting the two through the compressor 3, thereby disconnecting the first joint 52 and the second end of the first heat exchanger 1 to expose the throttling component 6 in the installation channel 521. Since the throttling component 6 is detachably connected to the first joint 52, the staff can directly remove the throttling component 6 to be replaced from the installation channel 521, and then reseal the new throttling component 6 in the installation channel 521 to achieve the replacement of the throttling component 6.

[0084] In this way, the throttling component 6 can be replaced without releasing the refrigerant in the second heat exchanger 2, and since the refrigerant is completely compressed in the compressor 3, the second heat exchanger 2 and the pipe connecting the two, after replacing the throttling component 6, there is no need to refill the refrigerant into the outdoor unit 20, which can simplify the replacement process of the throttling component 6 and facilitate the replacement of the throttling component 6.

[0085] In addition, in the related art, the second stop valve 5, the second heat exchanger 2, the compressor 3 and the first stop valve 4 are assembled together to form the outdoor unit 20. Before the outdoor unit 20 leaves the factory, refrigerant needs to be added to the outdoor unit 20. Since the throttle valve is arranged between the second stop valve 5 and the second heat exchanger 2, when the refrigerant is added to the outdoor unit 20, the refrigerant will be affected by the throttling effect of the throttle valve, resulting in a slower speed of adding refrigerant to the outdoor unit 20, affecting production efficiency.

[0086] One solution in the related art is to add a process pipe to the pipe between the throttle valve and the second end of the second heat exchanger 2, one end of the process pipe is connected to the pipe between the throttle valve and the second end of the second heat exchanger 2, and the other end of the process pipe is used to connect to the equipment for filling refrigerant, and refrigerant is added to the outdoor unit 20 through the process pipe, thereby preventing the refrigerant from being throttled by the throttle valve.

[0087] However, after adding refrigerant into the outdoor unit 20 through the above method, the process pipe needs to be welded to prevent the refrigerant from flowing out of the outdoor unit 20 from the process pipe. For some flammable refrigerants (such as R290 (propane), R32 (difluoromethane), 454b, etc.), the refrigerant in the outdoor unit 20 may be ignited when welding the process pipe, which poses a certain safety risk.

[0088] By setting the throttling component 6 in the application, before the outdoor unit 20 leaves the factory, when adding refrigerant into the outdoor unit 20, the throttling component 6 can be removed in advance, and then the refrigerant is added into the outdoor unit 20 through the second stop valve 5. After the refrigerant is added, the second stop valve 5 is closed, and then the throttling component 6 is reinstalled in the installation channel 521.

[0089] In this way, in the process of adding refrigerant into the outdoor unit 20, the throttling component 6 is not set in the installation channel 521, and the refrigerant will not be affected by the throttling effect of the throttling component 6. This can increase the speed of adding refrigerant into the outdoor unit 20 and improve production efficiency.

[0090] At the same time, since no process pipe is provided and welding of the process pipe is not required, there is no risk of igniting the refrigerant, thereby ensuring the safety of the outdoor unit 20 during production. Based on the above, in some embodiments, the throttling assembly 6 and the first joint 52 are snap-fitted together to achieve a detachable connection between the throttling assembly 6 and the first joint 52.

[0091] In other embodiments, Figure 7 , Figure 8 As shown, the throttling assembly 6 includes a valve body 61, and a first thread 611 is formed on the outer wall surface of the valve body 61. Figure 6 As shown, a second thread 522 is formed on the peripheral wall surface of the installation channel 521 , and the first thread 611 is threadedly connected to the second thread 522 .

[0092] It can be understood that the first thread 611 is an internal thread and the second thread 522 is an external thread.

[0093] In this way, the throttling assembly 6 can be screwed together with the second thread 522 on the peripheral wall surface of the mounting channel 521 through the first thread 611. When installing or removing the throttling assembly 6, it is only necessary to rotate the throttling assembly 6 so that the throttling assembly 6 rotates relative to the first joint 52. In this way, a detachable connection between the throttling assembly 6 and the first joint 52 can be achieved, and the installation and disassembly of the throttling assembly 6 are convenient.

[0094] In some examples, the valve body 61 includes a cylindrical connecting portion, and the first thread 611 is formed on an outer peripheral wall surface of the connecting portion, so that the first thread 611 is formed on the valve body 61 .

[0095] In some examples, the shape of the mounting channel 521 is cylindrical, so that the second thread 522 is formed on the peripheral wall surface of the mounting channel 521 .

[0096] In some embodiments, Fig. 9 As shown, a first protrusion 523 is formed on the peripheral wall surface of the installation passage 521. One end of the valve body 61 close to the main body 51 contacts the first protrusion 523.

[0097] Through the above arrangement, during the installation of the throttling assembly 6, the throttling assembly 6 will gradually move toward the direction close to the main body 51 until it contacts the first protrusion 523. At this time, the first protrusion 523 will block the throttling assembly 6, thereby positioning the throttling assembly 6 to ensure the accuracy of the installation position of the throttling assembly 6.

[0098] Exemplarily, a plurality of first protrusions 523 are formed on the peripheral wall surface of the mounting channel 521 , and the plurality of first protrusions 523 are arranged at intervals along the circumference of the mounting channel 521 , and the plurality of first protrusions 523 can all contact with the throttling assembly 6 to position the throttling assembly 6 .

[0099] For example, Fig. 9 As shown, a first sealing surface N1 is formed at one end of the first protrusion 523 away from the main body portion 51 , and the first sealing surface N1 extends along the circumference of the installation channel 521 .

[0100] It can be understood that, in the above case, the first protrusion 523 also extends along the axial direction of the installation channel 521 for one circle.

[0101] A first contact surface M1 is formed at one end of the valve body 61 close to the main body portion 51 . The first contact surface M1 matches the first sealing surface N1 and contacts the first sealing surface N1 .

[0102] It should be noted that, since the first contact surface M1 matches the first sealing surface N1 , the contact between the first contact surface M1 and the first sealing surface N1 means that the entire surface of the first contact surface M1 is in contact with the entire surface of the first sealing surface N1 .

[0103] Through the above arrangement, when the throttling assembly 6 contacts the first protrusion 523 , the first protrusion 523 can position the throttling assembly 6 .

[0104] Furthermore, the first contact surface M1 is in contact with the first sealing surface N1. Since the surface-to-surface contact has a certain sealing effect, the first contact surface M1 and the first sealing surface N1 can seal the throttling assembly 6 and the first protrusion 523, thereby realizing the sealing setting of the throttling assembly 6 and the first joint 52.

[0105] Exemplarily, the first sealing surface N1 may be a plane, and the axis of the mounting channel 521 is perpendicular to the first sealing surface N1, and the first contact surface M1 is also a plane.

[0106] For example, Fig. 9 As shown, along the direction of the first joint 52 pointing to the main body 51, the distance between the first sealing surface N1 and the axis of the installation channel 521 gradually increases, and the distance between the first contact surface M1 and the axis of the installation channel 521 gradually increases.

[0107] Exemplarily, the first sealing surface N1 may be a spherical surface, and the first contact surface M1 may also be a spherical surface.

[0108] Exemplarily, the first sealing surface N1 may be a conical surface, and the first contact surface M1 may also be a conical surface.

[0109] Through the above-mentioned arrangement, when the first contact surface M1 and the first sealing surface N1 are in contact, compared with the first sealing surface N1 being a plane, the first contact surface M1 is also a plane, and there can be a larger contact area between the first contact surface M1 and the first sealing surface N1, thereby improving the sealing effect of the first contact surface M1 and the first sealing surface N1 on the throttling assembly 6 and the first protrusion 523.

[0110] Moreover, during the installation of the throttling assembly 6, since the distance between the first sealing surface N1 and the axis of the installation channel 521 gradually increases, when the throttling assembly 6 contacts the first sealing surface N1, the first sealing surface N1 can guide the throttling assembly 6, thereby being able to install and position the throttling assembly 6, so as to further ensure the accuracy of the installation position of the throttling assembly 6.

[0111] In some embodiments, Fig. 9 , Fig.10 As shown, the throttling assembly 6 further includes a sealing ring 62 , the valve body 61 passes through the sealing ring 62 , and the valve body 61 and the peripheral wall surface of the installation channel 521 are respectively sealed and connected to the sealing ring 62 .

[0112] Exemplarily, the number of the sealing rings 62 may be one or more, such as two, three, four, etc.

[0113] Exemplarily, the sealing ring 62 may be a rubber ring, a polyurethane sealing ring, or the like.

[0114] For example, the axial direction of the sealing ring 62 may be consistent with or inconsistent with the axial direction of the throttling assembly 6 .

[0115] In this way, when the refrigerant flows between the throttling assembly 6 and the peripheral wall surface of the installation channel 521, since the valve body 61 and the peripheral wall surface of the installation channel 521 are respectively sealed and connected to the sealing ring 62, the refrigerant will be blocked by the sealing ring 62 along the circumference of the valve body 61 and cannot continue to flow, thereby realizing the sealing setting of the throttling assembly 6 and the first joint 52.

[0116] In some examples, such as Fig.11 As shown, a mounting groove 612 is formed on the outer surface of the valve body 61 , and the sealing ring 62 is at least partially located in the mounting groove 612 .

[0117] In this way, when the throttling assembly 6 is installed in the installation channel 521 , the installation groove 612 can limit the movement of the sealing ring 62 relative to the valve body 61 , thereby ensuring the sealing effect of the sealing ring 62 .

[0118] In some examples, the throttling assembly 6 and the first joint 52 are sealed via the first contact surface M1 and the first sealing surface N1 , and are sealed via the sealing ring 62 .

[0119] In this way, through the cooperation of the first contact surface M1, the first sealing surface N1 and the sealing ring 62, the throttling assembly 6 and the first joint 52 can be better sealed, thereby ensuring the sealing effect of the throttling assembly 6 and the first joint 52.

[0120] When the air conditioner 100 is in cooling mode or heating mode, the refrigerant needs to pass through the throttling component 6 to be throttled and reduced in pressure by the throttling component 6 .

[0121] In some embodiments, the throttling requirement when the air conditioner 100 is in the cooling mode is consistent with the throttling requirement when the air conditioner 100 is in the heating mode.

[0122] In this case, a throttling channel is formed on the valve body 61 , and the throttling channel penetrates the valve body 61 along the arrangement direction of the throttling assembly 6 and the main body 51 .

[0123] In this way, when the air conditioner 100 is in the cooling mode or the heating mode, the refrigerant flows through the throttling flow channel, so as to throttle and reduce the pressure of the refrigerant through the throttling flow channel.

[0124] In other embodiments, the throttling requirement when the air conditioner 100 is in the cooling mode is inconsistent with the throttling requirement when the air conditioner 100 is in the heating mode.

[0125] In this case, if Fig.12 As shown, a throttling channel 6A is formed in the valve body 61, and the throttling channel 6A penetrates the valve body 61 along the arrangement direction of the first joint 52 and the main body 51. In this way, the refrigerant can be ensured to flow normally in the throttling channel 6A.

[0126] The throttling assembly 6 further includes a blocking member 63 , which is disposed in the throttling channel 6A and connected to the valve body 61 .

[0127] The throttling assembly 6 further includes a first valve core 64 , which is disposed on a side of the blocking member 63 away from the main body portion 51 and is capable of sliding in the throttling channel 6A along the axial direction of the throttling channel 6A.

[0128] A first main flow channel 64A and a first secondary flow channel 64B are formed in the first valve core 64 . The first main flow channel 64A and the first secondary flow channel 64B penetrate the first valve core 64 along the arrangement direction of the first valve core 64 and the blocking member 63 .

[0129] Exemplarily, the number of the first secondary flow channels 64B may be one or more, such as two, three, four, etc.

[0130] In this way, when the refrigerant flows in the throttling channel 6A to the first valve core 64, it can maintain the original flow direction in the first main channel 64A and the first secondary channel 64B, so that the refrigerant can flow more smoothly in the first main channel 64A and the first secondary channel 64B.

[0131] In some embodiments, Fig.13 , Fig.14 As shown, the first secondary flow channel 64B penetrates the outer surface of the first valve core 64 along the radial direction of the throttling channel 6A. In this way, the first secondary flow channel 64B can be formed by grooving the first valve core 64. Compared with forming a channel in the first valve core 64, the first secondary flow channel 64B can be formed more conveniently, thereby facilitating the processing of the first valve core 64. Fig.12 As shown, the throttling assembly 6 further includes a second valve core 65, which is disposed on a side of the blocking member 63 close to the main body 51 and is capable of sliding in the throttling channel 6A along the axial direction of the throttling channel 6A.

[0132] A second main flow channel 65A and a second secondary flow channel 65B are formed in the second valve core 65 . The second main flow channel 65A and the second secondary flow channel 65B penetrate the second valve core 65 along the arrangement direction of the second valve core 65 and the blocking member 63 .

[0133] Exemplarily, the number of the second secondary flow channels 65B may be one or more, such as two, three, four, etc.

[0134] In this way, when the refrigerant flows in the throttling channel 6A to the second valve core 65, it can maintain the original flow direction in the second main channel 65A and the second secondary channel 65B, so that the refrigerant can flow more smoothly in the second main channel 65A and the second secondary channel 65B.

[0135] In some embodiments, the second secondary flow channel 65B penetrates the outer surface of the second valve core 65 along the radial direction of the throttling channel 6A. In this way, the second secondary flow channel 65B can be formed by grooving the second valve core 65. Compared with forming a channel in the second valve core 65, the second secondary flow channel 65B can be formed more conveniently, thereby facilitating the processing of the second valve core 65.

[0136] When the air conditioner 100 is in heating mode, the first valve core 64 slides to contact the blocking member 63, and the blocking member 63 blocks the first secondary flow channel 64B, the second valve core 65 is separated from the blocking member 63, the first main flow channel 64A is respectively connected to the second main flow channel 65A and the second secondary flow channel 65B, and the refrigerant flow rate in the first main flow channel 64A is greater than the refrigerant flow rate in the second main flow channel 65A.

[0137] Exemplarily, the first main flow channel 64A has a smaller radial dimension than the second main flow channel 65A.

[0138] Exemplarily, the radial dimension of the first main flow channel 64A is larger than that of the second main flow channel 65A, and the radial dimension of the first main flow channel 64A is smaller than the sum of the radial dimensions of the second main flow channel 65A and the second secondary flow channel 65B.

[0139] When the air conditioner 100 is in cooling mode, the second valve core 65 slides to contact the blocking member 63, and the blocking member 63 blocks the second secondary flow channel 65B, the first valve core 64 is separated from the blocking member 63, the second main flow channel 65A is respectively connected to the first main flow channel 64A and the first secondary flow channel 64B, and the refrigerant flow rate in the second main flow channel 65A is greater than the refrigerant flow rate in the first main flow channel 64A.

[0140] Exemplarily, the second main flow channel 65A is smaller in radial dimension than the first main flow channel 64A.

[0141] Exemplarily, the radial dimension of the second main flow channel 65A is smaller than the sum of the radial dimension of the first main flow channel 64A and the radial dimension of the first secondary flow channel 64B.

[0142] It can be understood that when the air conditioner 100 is in the heating mode, since the first main channel 64A is connected to the second main channel 65A and the second secondary channel 65B respectively, the flow rate of the refrigerant in the second main channel 65A and the second secondary channel 65B is the same. When the air conditioner 100 is in the cooling mode, the second main channel 65A is connected to the first main channel 64A and the first secondary channel 64B respectively, so the flow rate of the refrigerant in the first main channel 64A and the first secondary channel 64B is the same.

[0143] Through the above arrangement, when the air conditioner 100 is in the heating mode, since the first secondary flow channel 64B is blocked by the blocking member 63, and the refrigerant flow rate in the first main flow channel 64A is greater than the refrigerant flow rate in the second main flow channel 65A, the refrigerant is only throttled and reduced in pressure by the first main flow channel 64A when flowing in the throttling channel 6A.

[0144] When the air conditioner 100 is in cooling mode, since the second secondary flow channel 65B is blocked by the blocking member 63 and the refrigerant flow rate in the second main flow channel 65A is greater than the refrigerant flow rate in the first main flow channel 64A, the refrigerant is only throttled and reduced in pressure by the second main flow channel 65A when flowing in the throttling channel 6A.

[0145] Through the cooperation of the first valve core 64 and the second valve core 65, after the air conditioner 100 switches to a different working mode, the position of the first valve core 64 in the throttling channel 6A and the position of the second valve core 65 in the throttling channel 6A will change with the change of the refrigerant flow direction. When the air conditioner 100 switches to the heating mode, the refrigerant can be throttled by the first main channel 64A. When the air conditioner 100 switches to the cooling mode, the refrigerant can be throttled by the second main channel 65A.

[0146] In this way, the throttling component 6 can automatically adjust the throttling effect on the refrigerant, thereby meeting the different throttling requirements of the air conditioner 100 in the cooling mode and the heating mode. In this way, there is no need to set up a controller to change the throttling effect of the throttling component 6, so as to simplify the structure of the throttling component 6 and facilitate the processing of the throttling component 6.

[0147] It can be understood that the first main channel 64A can be set to a suitable size according to the throttling requirement when the air conditioner 100 is in the heating mode, and the second main channel 65A can be set to a suitable size according to the throttling requirement when the air conditioner 100 is in the cooling mode, so as to meet the different throttling requirements of the air conditioner 100 in different modes, thereby improving the applicability of the air conditioner 100.

[0148] For example, when the throttling demand of the air conditioner 100 in the cooling mode is greater than the throttling demand of the air conditioner 100 in the heating mode, the radial size of the second main flow channel 65A can be made smaller than the radial size of the first main flow channel 64A. When the throttling demand of the air conditioner 100 in the cooling mode is less than the throttling demand of the air conditioner 100 in the heating mode, the radial size of the second main flow channel 65A can be made larger than the radial size of the first main flow channel 64A.

[0149] In some embodiments, Fig.15 As shown, along the direction perpendicular to the axial direction of the throttling channel 6A, the blocking member 63 is connected to one of the two side walls of the throttling channel 6A, and a gap is formed between the other side walls of the two side walls of the throttling channel 6A. Along the axial direction of the throttling channel 6A, the orthographic projection of the opening of one end of the first main flow channel 64A close to the blocking member 63 on the blocking member 63 is located outside the blocking member 63, and the orthographic projection of the opening of one end of the first secondary flow channel 64B close to the blocking member 63 on the blocking member 63 is located on the blocking member 63.

[0150] In this way, when the first valve core 64 slides to contact the blocking member 63, the blocking member 63 can block the opening of the first secondary flow channel 64B close to one end of the blocking member 63, thereby blocking the first secondary flow channel 64B. The first main flow channel 64A can communicate with the second main flow channel 65A and the second secondary flow channel 65B through the gap between the blocking member 63 and the other side wall of the throttling channel 6A, so as to realize the throttling function of the first main flow channel 64A.

[0151] In other embodiments, along the direction perpendicular to the axial direction of the throttling channel 6A, the blocking member 63 is connected to one of the two side walls of the throttling channel 6A, and a gap is provided between the other side walls of the two side walls of the throttling channel 6A. Along the axial direction of the throttling channel 6A, the orthographic projection of the opening of one end of the second main flow channel 65A close to the blocking member 63 on the blocking member 63 is located outside the blocking member 63, and the orthographic projection of the opening of one end of the second secondary flow channel 65B close to the blocking member 63 on the blocking member 63 is located on the blocking member 63.

[0152] In this way, when the second valve core 65 slides to contact the blocking member 63, the blocking member 63 can block the opening of the second secondary flow channel 65B close to one end of the blocking member 63, thereby blocking the second secondary flow channel 65B. The second main flow channel 65A can communicate with the second main flow channel 65A and the second secondary flow channel 65B through the gap between the blocking member 63 and the other side wall of the throttling channel 6A, so as to realize the throttling function of the second main flow channel 65A.

[0153] In some embodiments, Fig.16As shown, the blocking member 63 extends along the circumference of the throttling channel 6A for one circle, so that a connecting channel 63A is formed in the blocking member 63, and the connecting channel 63A connects the first main flow channel 64A and the second main flow channel 65A. The radial dimension of the connecting channel 63A is larger than the radial dimension of the first main flow channel 64A, and larger than the radial dimension of the second main flow channel 65A.

[0154] It can be understood that when the air conditioner 100 is in heating mode, the flow rate of the refrigerant in the connecting channel 63A is less than the flow rate of the refrigerant in the first main channel 64A, and when the air conditioner 100 is in cooling mode, the flow rate of the refrigerant in the connecting channel 63A is less than the flow rate of the refrigerant in the second main channel 65A.

[0155] Through the above arrangement, when the air conditioner 100 is in heating mode, the refrigerant will not be throttled by the connecting channel 63A after being throttled by the first mainstream channel 64A, so as to ensure the throttling effect of the throttling component 6 on the refrigerant when the air conditioner 100 is in heating mode.

[0156] Furthermore, when the air conditioner 100 is in cooling mode, the refrigerant will not be throttled by the connecting channel 63A after being throttled by the second main flow channel 65A, so as to ensure the throttling effect of the throttling component 6 on the refrigerant when the air conditioner 100 is in cooling mode.

[0157] In this way, when the air conditioner 100 is in cooling mode or heating mode, the refrigerant will not be affected by the connecting channel 63A, thus ensuring that the throttling component 6 can normally throttle the refrigerant, thereby ensuring the normal operation of the air conditioner 100.

[0158] Based on the above, in some examples, such as Fig.17 As shown, the throttling assembly 6 also includes a first sealing column 66, which is connected to the side of the first valve core 64 close to the blocking member 63, and the axial direction of the first sealing column 66 is consistent with the axial direction of the communication channel 63A, and the radial dimension of the first sealing column 66 is equal to the radial dimension of the communication channel 63A. The first main flow channel 64A extends to the first sealing column 66 and passes through the first sealing column 66.

[0159] When the first valve core 64 contacts the blocking member 63, the first sealing column 66 extends into the connecting channel 63A, and the outer peripheral wall surface of the first sealing column 66 contacts the inner wall surface of the connecting channel 63A to seal the gap between the first sealing column 66 and the inner wall surface of the connecting channel 63A.

[0160] In this way, when the refrigerant flows from the side of the first valve core 64 away from the blocking member 63 to the side of the first valve core 64 close to the blocking member 63, it can only flow in the first main flow channel 64A, which can further ensure the throttling effect of the first main flow channel 64A.

[0161] Based on the above, in some examples, such as Fig.17 As shown, the throttling assembly 6 also includes a second sealing column 67, which is connected to the side of the second valve core 65 close to the blocking member 63, and the axial direction of the second sealing column 67 is consistent with the axial direction of the communication channel 63A, and the radial dimension of the second sealing column 67 is equal to the radial dimension of the communication channel 63A. The second main flow channel 65A extends to the second sealing column 67 and passes through the second sealing column 67.

[0162] When the second valve core 65 contacts the blocking member 63, the second sealing column 67 extends into the connecting channel 63A, and the outer peripheral wall surface of the second sealing column 67 contacts the inner wall surface of the connecting channel 63A to seal the gap between the second sealing column 67 and the inner wall surface of the connecting channel 63A.

[0163] In this way, when the refrigerant flows from the side of the second valve core 65 away from the blocking member 63 to the side of the second valve core 65 close to the blocking member 63, it can only flow in the second main flow channel 65A, which can further ensure the throttling effect of the second main flow channel 65A.

[0164] In order to ensure the blocking effect of the blocking member 63 on the first secondary flow channel 64B, in some embodiments, as Fig.18 As shown, a second sealing surface N2 is formed at one end of the blocking member 63 close to the first valve core 64, and a second contact surface M2 is formed at one end of the first valve core 64 close to the blocking member 63. The second contact surface M2 matches the second sealing surface N2. When the air conditioner is in heating mode, the second contact surface contacts the second sealing surface N2.

[0165] It should be noted that, since the second contact surface M2 matches the second sealing surface N2, the contact between the second contact surface M2 and the second sealing surface N2 means that the entire surface of the second contact surface M2 is in contact with the entire surface of the second sealing surface N2.

[0166] Through the above-mentioned arrangement, when the first valve core 64 contacts the blocking member 63, the second contact surface M2 and the second sealing surface N2 can seal the gap between the first valve core 64 and the blocking member 63 to prevent the refrigerant from flowing from the gap between the first valve core 64 and the blocking member 63 to the second valve core 65, thereby ensuring the throttling effect of the first main flow channel 64A.

[0167] Exemplarily, the second sealing surface N2 may be a plane, and the axis of the mounting channel 521 is perpendicular to the second sealing surface N2, and the second contact surface M2 is also a plane.

[0168] Exemplarily, along the direction from the first valve core 64 to the blocking member 63 , the distance between the second sealing surface N2 and the axis of the throttling channel 6A gradually decreases, and the distance between the second contact surface M2 and the axis of the throttling channel 6A gradually decreases.

[0169] Exemplarily, the second sealing surface N2 may be a spherical surface, and the second contact surface M2 may also be a spherical surface.

[0170] Exemplarily, the second sealing surface N2 may be a conical surface, and the second contact surface M2 may also be a conical surface.

[0171] Through the above-mentioned arrangement, when the second contact surface M2 and the second sealing surface N2 are in contact, compared with the second contact surface M2 being a plane, the second sealing surface N2 is also a plane, and there can be a larger contact area between the second contact surface M2 and the second sealing surface N2, thereby improving the sealing effect of the second contact surface M2 and the second sealing surface N2 on the blocking member 63 and the first valve core 64.

[0172] Moreover, as the first valve core 64 slides toward the blocking member 63, the distance between the second sealing surface N2 and the axis of the throttling channel 6A gradually increases. Therefore, when the first valve core 64 contacts the second sealing surface N2, the second sealing surface N2 can guide the first valve core 64, thereby ensuring the accuracy of the sliding position of the first valve core 64.

[0173] In some examples, when the blocking member 63 is formed with a communication channel 63A, the second sealing surface N2 is an end surface of the communication channel 63A close to one end of the first valve core 64 .

[0174] In order to ensure the blocking effect of the blocking member 63 on the second secondary flow channel 65B, in some embodiments, as Fig.18 As shown, a third sealing surface N3 is formed at one end of the blocking member 63 close to the second valve core 65, and a third contact surface M3 is formed at one end of the second valve core 65 close to the blocking member 63. The third contact surface M3 matches the third sealing surface N3. When the air conditioner 100 is in cooling mode, the third contact surface M3 contacts the third sealing surface N3.

[0175] It should be noted that, since the third contact surface M3 matches the third sealing surface N3, the contact between the third contact surface M3 and the third sealing surface N3 refers to the contact between the entire surface of the third contact surface M3 and the entire surface of the third sealing surface N3.

[0176] Through the above-mentioned arrangement, when the second valve core 65 contacts the blocking member 63, the third contact surface M3 and the third sealing surface N3 can seal the gap between the second valve core 65 and the blocking member 63 to prevent the refrigerant from flowing from the gap between the second valve core 65 and the blocking member 63 to the second valve core 65, thereby ensuring the throttling effect of the second main flow channel 65A.

[0177] Exemplarily, the third sealing surface N3 may be a plane, and the axis of the mounting channel 521 is perpendicular to the third sealing surface N3, and the third contact surface M3 is also a plane.

[0178] Exemplarily, along the direction from the second valve core 65 to the blocking member 63 , the distance between the third sealing surface N3 and the axis of the throttling channel 6A gradually decreases, and the distance between the third contact surface M3 and the axis of the throttling channel 6A gradually decreases.

[0179] Exemplarily, the third sealing surface N3 may be a spherical surface, and the third contact surface M3 may also be a spherical surface.

[0180] Exemplarily, the third sealing surface N3 may be a conical surface, and the third contact surface M3 may also be a conical surface.

[0181] Through the above-mentioned setting, when the third contact surface M3 and the third sealing surface N3 are in contact, compared with the third contact surface M3 being a plane, the third sealing surface N3 is also a plane, and the third contact surface M3 and the third sealing surface N3 can have a larger contact area, thereby improving the sealing effect of the third contact surface M3 and the third sealing surface N3 on the blocking member 63 and the second valve core 65.

[0182] Moreover, as the second valve core 65 slides toward the blocking member 63, the distance between the third sealing surface N3 and the axis of the throttling channel 6A gradually increases. Therefore, when the second valve core 65 contacts the third sealing surface N3, the third sealing surface N3 can guide the second valve core 65, thereby ensuring the accuracy of the sliding position of the second valve core 65.

[0183] In some examples, when the blocking member 63 is formed with a communication channel 63A, the third sealing surface N3 is an end surface of the communication channel 63A close to one end of the second valve core 65 .

[0184] In some embodiments, Fig.18 As shown, the throttling assembly 6 also includes a first side wall 68, which is connected to an opening at one end of the throttling channel 6A away from the main body 51. The thickness direction of the first side wall 68 is consistent with the direction of the throttling assembly 6 away from the main body 51. A first through hole 68A is opened on the first side wall 68, and the first through hole 68A connects the installation channel 521 and the throttling channel 6A, and the radial dimension of the first through hole 68A is smaller than the radial dimension of the throttling channel 6A.

[0185] The first valve element 64 includes a first main body 641 and a first sliding portion 642. The peripheral wall surface of the first sliding portion 642 contacts the inner wall surface of the throttle passage 6A, and the first sliding portion 642 is slidable relative to the valve body 61.

[0186] For example, when the throttle passage 6A is cylindrical in shape, the sliding portion is also cylindrical in shape.

[0187] For example, when the throttle passage 6A is prism-shaped, the sliding portion is also prism-shaped.

[0188] The first body 641 is connected to a side of the first sliding portion 642 close to the blocking member 63. The first main flow channel 64A and the first secondary flow channel 64B both penetrate the first body 641 and the first sliding portion 642.

[0189] In this way, the first sliding portion 642 can slide between the blocking member 63 and the first side wall 68, thereby ensuring that the air conditioner 100 can switch between the heating state and the cooling state.

[0190] It can be understood that the radial dimension of the first through hole 68A is greater than the radial dimension of the first main flow channel 64A and the radial dimension of the second main flow channel 65A.

[0191] In some examples, such as Fig.19 As shown, the first valve core 64 also includes a first support portion 643, which is connected to the side of the first sliding portion 642 away from the blocking member 63. When the air conditioner 100 is in cooling mode, the first support portion 643 is supported between the first sliding portion 642 and the first side wall 68 to form a first gap K1 between the surface of the side of the first sliding portion 642 away from the blocking member 63 and the first side wall 68.

[0192] In this way, when the refrigerant flows out from the end of the first main flow channel 64A away from the blocking member 63 and the end of the first secondary flow channel 64B away from the blocking member 63 , it can flow into the first gap K1 and then flow into the installation channel 521 through the first through hole 68A.

[0193] In this way, the setting of the first support portion 643 can prevent the first side wall 68 from blocking the opening of the first main channel 64A at one end away from the blocking member 63 or the opening of the first secondary channel 64B at one end away from the blocking member 63 when the first sliding portion 642 and the first side wall 68 are directly abutted, so as to ensure the normal flow of the refrigerant and the normal function of the throttling assembly 6.

[0194] Exemplarily, the number of the first supporting parts 643 may be one or more, such as two, three, four, etc.

[0195] In some examples, the first supporting portion 643 is a supporting block, and the supporting block is connected to the first sliding portion 642 .

[0196] In some embodiments, Fig.18 As shown, the throttling assembly 6 also includes a second side wall 69, which is connected to an opening at one end of the throttling channel 6A away from the main body 51. The thickness direction of the second side wall 69 is consistent with the direction of the throttling assembly 6 away from the main body 51. A second through hole 69A is opened on the second side wall 69, and the second through hole 69A connects the installation channel 521 and the throttling channel 6A, and the radial dimension of the second through hole 69A is smaller than the radial dimension of the throttling channel 6A.

[0197] The second valve core 65 includes a second main body 651 and a second sliding portion 652. The peripheral wall surface of the second sliding portion 652 contacts the inner wall surface of the throttle passage 6A, and the second sliding portion 652 is slidable relative to the valve body 61.

[0198] For example, when the throttle passage 6A is cylindrical in shape, the sliding portion is also cylindrical in shape.

[0199] For example, when the throttle passage 6A is prism-shaped, the sliding portion is also prism-shaped.

[0200] The second body 651 is connected to a side of the second sliding portion 652 close to the blocking member 63. The first main flow channel 64A and the first secondary flow channel 64B both penetrate the second body 651 and the second sliding portion 652.

[0201] In this way, the second sliding portion 652 can slide between the blocking member 63 and the second side wall 69, thereby ensuring that the air conditioner 100 can switch between the heating state and the cooling state.

[0202] It can be understood that the radial dimension of the second through hole 69A is greater than the radial dimension of the first main flow channel 64A and the radial dimension of the second main flow channel 65A.

[0203] In some examples, such as Fig.19 As shown, the second valve core 65 also includes a second support portion 653, which is connected to the side of the second sliding portion 652 away from the blocking member 63. When the air conditioner 100 is in heating mode, the second support portion 653 is supported between the second sliding portion 652 and the second side wall 69 to form a second gap between the surface of the second sliding portion 652 away from the blocking member 63 and the second side wall 69.

[0204] In this way, when the refrigerant flows out from one end of the second main flow channel 65A away from the blocking member 63 and one end of the second secondary flow channel 65B away from the blocking member 63 , it can flow into the second gap and then flow into the installation channel 521 through the first through hole 68A.

[0205] In this way, the setting of the second support portion 653 can prevent the second sliding portion 652 from directly abutting against the second side wall 69, and the second side wall 69 from blocking the opening of the second main channel 65A at one end away from the blocking member 63 or the opening of the second secondary channel 65B at one end away from the blocking member 63, so as to ensure the normal flow of the refrigerant and the normal function of the throttling assembly 6.

[0206] Exemplarily, the number of the second supporting parts 653 may be one or more, such as two, three, four, etc.

[0207] In some examples, the second supporting portion 653 is a supporting block, and the supporting block is connected to the second sliding portion 652 .

[0208] In some examples, such as Fig.19 , Fig. 20 As shown, a tool groove 68B is provided on the first side wall 68 at a side away from the first valve core 64 , and the tool groove 68B is used to engage with an installation tool for installing the throttling assembly 6 .

[0209] Exemplarily, the opening of the tool slot 68B is a regular hexagon, and the installation tool is a hexagonal wrench.

[0210] Exemplarily, along the axial direction of the throttle passage 6A, the tool groove 68B and the first through hole 68A do not overlap.

[0211] Exemplarily, the first through hole 68A is opened on the bottom wall of the tool groove 68B.

[0212] In this way, when installing the throttling assembly 6 into the installation channel 521, the throttling assembly 6 can be placed into the installation channel 521 first, and then the installation tool can be engaged with the tool groove 68B, so that the throttling assembly 6 and the first joint 52 are screwed together by the installation tool, so as to facilitate the installation of the throttling assembly 6 into the installation channel 521.

[0213] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0214] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0215] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioner, characterized in that: include: A compressor, used for compressing the refrigerant in the air conditioner; a first heat exchanger; A second heat exchanger; A four-way valve, the four-way valve comprising a first port, a second port, a third port and a fourth port; the air outlet of the compressor is connected to the first port; a first stop valve, wherein the second port is connected to the first end of the first heat exchanger through the first stop valve; The third port is in communication with the return air port of the compressor, and the fourth port is in communication with the first end of the second heat exchanger; The first port is in reciprocal communication with one of the second port and the fourth port, and the third port is in reciprocal communication with one of the second port and the fourth port, so that the air conditioner switches between a heating mode and a cooling mode; a second stop valve, comprising a main body and a first joint connected to the main body, wherein a mounting passage is formed in the first joint; the main body is in communication with the second end of the second heat exchanger, and is in communication with the second end of the first heat exchanger through the mounting passage; the main body is used to control the switch of the second stop valve; A throttling assembly is arranged in the installation channel and communicates with the main body and the second end of the first heat exchanger; the throttling assembly is sealedly connected to the peripheral wall surface of the installation channel and is detachably connected to the first joint.

2. The air conditioner according to claim 1, characterized in that: The throttling assembly comprises a valve body, and a first thread is formed on the outer wall surface of the valve body; A second thread is formed on the peripheral wall surface of the installation channel, and the first thread is threadedly connected with the second thread.

3. The air conditioner according to claim 2, characterized in that: The throttling assembly also includes a sealing ring, the valve body passes through the sealing ring, and the valve body and the peripheral wall surface of the installation channel are respectively sealed and connected to the sealing ring.

4. The air conditioner according to claim 2, characterized in that: A first protrusion is formed on the peripheral wall surface of the installation channel; and one end of the valve body close to the main body portion contacts the first protrusion.

5. The air conditioner according to claim 4, characterized in that: A first sealing surface is formed at one end of the first protrusion away from the main body portion, and the first sealing surface extends along the circumference of the installation channel; A first contact surface is formed at one end of the valve body close to the main body portion, and the first contact surface matches the first sealing surface and contacts the first sealing surface.

6. The air conditioner according to claim 5, characterized in that: Along the direction from the first joint to the main body, the distance between the first sealing surface and the axis of the mounting channel gradually increases, and the distance between the first contact surface and the axis of the mounting channel gradually increases.

7. The air conditioner according to any one of claims 2 to 5, characterized in that: A throttling channel is formed in the valve body, and the throttling channel penetrates the valve body along the arrangement direction of the first joint and the main body; The throttling assembly also includes: A blocking member, disposed in the throttling channel and connected to the valve body; a first valve core, which is arranged on a side of the blocking member away from the main body and can slide in the throttling channel along the axial direction of the throttling channel; a first main flow channel and a first secondary flow channel are formed in the first valve core, and the first main flow channel and the first secondary flow channel respectively penetrate the first valve core along the arrangement direction of the first valve core and the blocking member; A second valve core is provided on a side of the blocking member close to the main body and is capable of sliding in the throttling channel along the axial direction of the throttling channel; a second main flow channel and a second secondary flow channel are formed in the second valve core, and the second main flow channel and the second secondary flow channel respectively penetrate the second valve core along the arrangement direction of the second valve core and the blocking member; When the air conditioner is in heating mode, the first valve core slides to contact the blocking member, and the blocking member blocks the first secondary flow channel, the second valve core is separated from the blocking member, the first main flow channel is connected to the second main flow channel and the second secondary flow channel respectively, and the refrigerant flow rate in the first main flow channel is greater than the refrigerant flow rate in the second main flow channel; When the air conditioner is in cooling mode, the second valve core slides to contact the blocking member, and the blocking member blocks the second secondary flow channel, the first valve core is separated from the blocking member, the second main flow channel is respectively connected to the first main flow channel and the first secondary flow channel, and the refrigerant flow rate in the second main flow channel is greater than the refrigerant flow rate in the first main flow channel.

8. The air conditioner according to claim 7, characterized in that: The blocking member extends along the circumference of the throttling channel for one circle, so that a communication channel is formed in the blocking member, and the communication channel connects the first main flow channel and the second main flow channel; the radial dimension of the communication channel is larger than the radial dimension of the first main flow channel, and larger than the radial dimension of the second main flow channel; And / or, the first slave flow channel penetrates the throttling channel in a radial direction to the outer surface of the first valve core; And / or, the second secondary flow channel penetrates the throttling channel in a radial direction to the outer surface of the second valve core.

9. The air conditioner according to claim 7, characterized in that: A second sealing surface is formed at one end of the blocking member close to the first valve core, and a second contact surface is formed at one end of the first valve core close to the blocking member, the second contact surface matches the second sealing surface, and when the air conditioner is in heating mode, the second contact surface contacts the second sealing surface; And / or, a third sealing surface is formed at one end of the blocking member close to the second valve core, and a third contact surface is formed at one end of the second valve core close to the blocking member, and the third contact surface matches the third sealing surface. When the air conditioner is in cooling mode, the third contact surface contacts the third sealing surface.

10. An air conditioner, characterized in that: include: A compressor, used for compressing the refrigerant in the air conditioner; a first heat exchanger; a second heat exchanger, wherein the compressor is in communication with a first end of the second heat exchanger; a first stop valve, the compressor is connected to the first end of the first heat exchanger through the first stop valve; a second stop valve, comprising a main body and a first joint connected to the main body, wherein a mounting passage is formed in the first joint; the main body is in communication with the second end of the second heat exchanger, and is in communication with the second end of the first heat exchanger through the mounting passage; the main body is used to control the switch of the second stop valve; A throttling assembly is arranged in the installation channel and communicates with the main body and the second end of the first heat exchanger; the throttling assembly is sealedly connected to the peripheral wall surface of the installation channel and is detachably connected to the first joint.

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