Indoor heat exchanger, indoor unit and air conditioner

Abstract

The application provides an indoor heat exchanger, an indoor unit and an air conditioner. The indoor heat exchanger has a gas pipe and a liquid pipe; at least one first valve is arranged on each of the gas pipe and the liquid pipe; the gas pipe and the liquid pipe have a connecting end connected with an outdoor connecting pipe; and the connecting end is detachably connected with the outdoor connecting pipe. Since the first valve is provided, the valve can be opened or closed in the indoor, and the refrigerant can be collected in the indoor, so that it is not necessary to go back and forth to open and close the valve of the outdoor unit, and it is not necessary to cause personal accidents when lifting high-altitude operation, the operation safety is improved, the heat exchanger can be quickly detached and installed in the indoor, the fan blade and the air duct are conveniently cleaned, the work difficulty is reduced, and the work danger is reduced.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to an indoor heat exchanger, an indoor unit, and an air conditioner. Background Technology

[0002] As people's living standards gradually improve, their requirements for living environments are also increasing. Air conditioning has become a necessity in family life, and people are paying more and more attention to the indoor environment. During use, air conditioners continuously accumulate impurities or dust from the air in the filter and inside the unit, requiring regular cleaning. In environments with poor air quality, a lot of dust will accumulate inside the evaporator and air ducts, requiring the entire indoor unit to be removed and disassembled to remove the evaporator and air duct components in order to clean the dust off the internal parts.

[0003] The indoor and outdoor units are connected by an outdoor connecting pipe. One end of the outdoor connecting pipe connects to the valve on the outdoor unit, and the other end connects to the interface on the indoor unit. Before cleaning or repairing the indoor unit, the refrigerant must be collected and completely drawn into the outdoor unit before closing the outdoor unit's valve to prevent refrigerant leakage. Before cleaning the indoor unit, the nuts at the indoor unit's interface must be loosened, and the outdoor connecting pipe must be disconnected from the indoor unit's interface. Only then can the indoor unit be disassembled. After cleaning, the outdoor connecting pipe must be reconnected to the indoor unit's interface, and a vacuum pump must be connected to the outdoor unit's valve to perform vacuuming. After vacuuming, the vacuum pump must be removed, and the outdoor unit's valve opened. This completes the entire disassembly and installation process of the indoor unit. During the disassembly and installation of the indoor unit, the outdoor unit's valve needs to be closed and opened three times. When the outdoor unit is outdoors and located on a high-rise building, this requires working at height, making the operation complex and dangerous. Summary of the Invention

[0004] This invention provides an indoor heat exchanger, an indoor unit, and an air conditioner, which can solve the technical problem of needing to shut off the outdoor unit's valve multiple times at height during the disassembly and installation of the indoor unit.

[0005] This invention provides an indoor unit, wherein the indoor heat exchanger has a gas pipe and a liquid pipe;

[0006] At least one first valve is installed on both the gas pipe and the liquid pipe;

[0007] The endotracheal tube and the endotracheal tube have connecting ends that connect to the outdoor connecting pipe, and the connecting ends are detachably connected to the outdoor connecting pipe.

[0008] In some embodiments, both the gas pipe and the liquid pipe include a first pipe segment and a second pipe segment, which are connected by a connecting pipe, and at least one first valve is provided on the connecting pipe.

[0009] In some implementations, the connecting pipe has a segmented structure and is detachably connected to the first pipe segment and / or the second pipe segment.

[0010] In some embodiments, the connecting pipeline includes a main pipe and at least one branch pipe detachably connected to the main pipe, and a first valve is disposed at the junction of the main pipe and the branch pipe or on the branch pipe.

[0011] In some embodiments, a first valve is disposed at the connection between the main pipe and the branch pipe, and the first valve includes a first locking member, an abutment member, and a valve core and a push rod disposed in the main pipe;

[0012] The first locking member is axially movable and is detachably connected to the branch pipe; one end of the abutment member is connected to the inner wall of the main pipe, and the other end of the abutment member extends into the first locking member;

[0013] The push rod is movably arranged along the axial direction of the branch pipe. The push rod has a first end and a second end. The first end extends out of the valve core for sealing or connecting the valve core. The second end extends into the valve core. When the push rod is in the first position, the first locking member is connected to the branch pipe, and the second end is connected to the abutment member, and the valve core is connected. When the push rod is in the second position, the first locking member is separated from the branch pipe, and the valve core is sealed.

[0014] In some embodiments, the first valve further includes a fixed seat, a guide seat, and an elastic element sleeved on the push rod. The fixed seat is disposed on the valve core seat, and the guide seat is fixedly connected to the push rod. The elastic element, the guide seat, and the fixed seat are arranged sequentially from the first end to the second end. The guide seat can be movably disposed along the axial direction of the branch pipe so that the elastic element can be compressed or extended.

[0015] The valve core has a connecting hole, and a seal is provided on the second end to seal the connecting hole.

[0016] In some embodiments, a first valve is mounted on a main pipe, and a second locking element is mounted on the main pipe, which is threadedly connected to a branch pipe.

[0017] In some implementations, the main pipe is provided with at least one second valve, which is used to disconnect the connection between the main pipe and the branch pipe.

[0018] In some implementations, a third valve is also provided on the main pipe, which is connected to an external vacuum pump for evacuating air from the main pipe and / or branch pipes.

[0019] An indoor unit includes an indoor heat exchanger, wherein the indoor heat exchanger is an indoor unit mounted on a wall.

[0020] An air conditioner includes an indoor unit, wherein the indoor unit is as described above.

[0021] The present invention provides an indoor heat exchanger, an indoor unit, and an air conditioner, which have the following beneficial effects:

[0022] When the unit has been used for an extended period and requires cleaning of the indoor unit's exterior, filter, and heat exchanger, turn off the entire unit and disconnect its power. Close the first valve on the liquid line; the outdoor unit will stop supplying refrigerant to the indoor heat exchanger. During this process, the compressor will continue to operate. After the unit has been running for 1-2 minutes, the refrigerant in the gas line will be drawn into the condenser by the compressor. Then close the first valve on the gas line. At this point, all the refrigerant in the circuit will be consumed. Disconnect the connection from the outdoor side, and the indoor heat exchanger can be removed for cleaning. Throughout this process, the first valve must keep the gas and liquid lines sealed. After cleaning all the components that need cleaning, first connect the connection to the outdoor connecting pipe, then open the first valve. At this point, the gas and liquid lines are connected to their respective outdoor connecting pipes. Because of the presence of the first valve, the present invention allows the valve to be opened or closed indoors, and the refrigerant to be collected indoors. This eliminates the need to travel back and forth to the outside to open and close the outdoor unit's valve, reducing the risk of personal injury during high-altitude operations, improving operational safety, enabling quick disassembly and installation of the indoor heat exchanger indoors, and facilitating the cleaning of fan blades and air ducts, thus reducing the difficulty and danger of the work. Attached Figure Description

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an embodiment of the present invention where the first valve is installed at the connection between the main pipe and the branch pipe.

[0025] Figure 2 This is a schematic diagram of a branch pipe when the first valve of an embodiment of the present invention is installed at the connection between the main pipe and the branch pipe.

[0026] Figure 3 This is a schematic diagram of the connecting pipeline when the first valve of an embodiment of the present invention is set at the connection between the main pipe and the branch pipe;

[0027] Figure 4 This is a schematic diagram of the connection between the main pipe and the branch pipe when the first valve of an embodiment of the present invention is set at the connection between the main pipe and the branch pipe.

[0028] Figure 5 This is a schematic diagram showing the disconnection between the main pipe and the branch pipe when the first valve of an embodiment of the present invention is set at the connection between the main pipe and the branch pipe.

[0029] Figure 6This is a schematic diagram of the valve core when the first valve of this embodiment of the invention is installed at the connection between the main pipe and the branch pipe.

[0030] Figure 7 This is a schematic diagram of the first valve being installed on a branch pipe according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a branch pipe when the first valve is installed on the branch pipe according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the connecting pipeline when the first valve of this invention is installed on a branch pipe;

[0033] Figure 10 This is a schematic diagram showing the connection between the main pipe and the branch pipe when the first valve of this invention is installed on the branch pipe.

[0034] Attached Figures: 1-Indoor heat exchanger; 21-Gas pipe; 22-Liquid pipe; 201-First pipe section; 202-Second pipe section; 3-Connecting pipe; 301-Main pipe; 302-Branch pipe; 31-First valve; 311-First locking element; 312-Abutting element; 313-Valve core; 314-Push rod; 315-Fixing seat; 316-Guide seat; 317-Elastic element; 318-Connecting hole; 319-Sealing element; 320-Second locking element; 32-Second valve; 33-Third valve. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0039] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, according to an embodiment of the present invention, an indoor heat exchanger 1 is provided, the indoor heat exchanger 1 having an air pipe 21 and a liquid pipe 22; each of the air pipe 21 and the liquid pipe 22 is provided with at least one first valve 31; the air pipe 21 and the liquid pipe 22 have a connecting end that is connected to an outdoor connecting pipe, and the connecting end is detachably connected to the outdoor connecting pipe.

[0040] It is worth noting that in this embodiment, the indoor heat exchanger 1 is an evaporator, and the gas pipe 21 and the liquid pipe 22 are respectively connected to an outdoor connecting pipe.

[0041] When the unit has been used for an extended period and requires cleaning of the indoor unit's exterior, filter, and heat exchanger 1, shut down the entire unit and disconnect its power. Close the first valve 31 on the liquid pipe 22, stopping the outdoor unit from supplying refrigerant to the indoor heat exchanger 1. During this process, the compressor continues to operate. After the unit has been running for 1-2 minutes, the refrigerant in the gas pipe 21 is drawn into the condenser by the compressor. Then close the first valve 31 on the gas pipe 21. At this point, all the refrigerant in the circuit has been consumed. Disconnect the connection from the outdoor side, and the indoor heat exchanger 1 can be removed for cleaning. Throughout this process, the first valve 31 keeps the gas pipe 21 and liquid pipe 22 sealed. After cleaning all the components that need cleaning, first connect the connection to the outdoor connecting pipe, then open the first valve 31. At this point, the gas pipe 21 and liquid pipe 22 are connected to their respective outdoor connecting pipes.

[0042] Because of the presence of the first valve 31, the present invention allows the valve to be opened or closed indoors, and the refrigerant to be collected indoors. This eliminates the need to travel back and forth to the outside to open and close the outdoor unit's valve, reducing the risk of personal injury during high-altitude operations, improving operational safety, enabling quick disassembly and installation of the indoor heat exchanger 1 indoors, and facilitating the cleaning of the fan blades and air ducts, thus reducing the difficulty and danger of the work.

[0043] Both the tracheal tube 21 and the liquid tube 22 include a first tube segment 201 and a second tube segment 202, which are connected by a connecting pipe 3. At least one first valve 31 is installed on the connecting pipe 3. Because of the connecting pipe 3, this invention allows the original continuous tracheal tube 21 and liquid tube 22 to be disassembled into two segments, connected by the connecting pipe 3. This ensures the airtightness of the tracheal tube 21 and liquid tube 22 after disconnection from the connecting pipe 3, without affecting their normal use. Furthermore, this disassembly and installation method is more flexible.

[0044] The connecting pipe 3 has a segmented structure and is detachably connected to the first pipe segment 201 and / or the second pipe segment 202. The connecting pipe 3 includes a main pipe 301 and at least one branch pipe 302 detachably connected to the main pipe 301. The ends of the main pipe 301 and the branch pipe 302 that are far apart from each other are detachably connected to the first pipe segment 201 and the second pipe segment 202, respectively. That is, the first pipe segment 201, the branch pipe 302, the main pipe 301 and the second pipe segment 202 can be connected in sequence. The first valve 31 is provided at the connection between the main pipe 301 and the branch pipe 302 or is provided on the branch pipe 302.

[0045] In this embodiment, before disassembling the indoor heat exchanger 1, the first valve 31 on the liquid pipe 22 is closed. At this time, the corresponding branch pipe 302 and the first pipe section 201 are in a sealed state. The first valve 31 on the gas pipe 21 is opened. After the refrigerant is recovered, the first valve 31 on the gas pipe 21 is closed, and the main pipe 301 and the branch pipe 302 are disconnected. That is, only the first pipe section 201 and the branch pipe 302 are located on the indoor heat exchanger 1, and the indoor heat exchanger 1 can be disassembled. Before installing the indoor heat exchanger 1, the main pipe 301 and the branch pipe 302 are connected, and the first valve 31 is opened again. At this time, the branch pipe 302 and the main pipe 301 are in a connected state. The connecting pipe 3 of the present invention is segmented. This structure makes the disassembly and installation more flexible. The first valve 31 can be adjusted according to the disassembly and installation requirements of the indoor heat exchanger 1.

[0046] In one specific implementation, the present invention provides two branch pipes 302, which are detachably installed at both ends of the main pipe 301. One branch pipe 302, with its end away from the main pipe 301, is connected to a first pipe section 201, and the other branch pipe 302, with its end away from the main pipe 301, is connected to a second pipe section 202. A first valve 31 is installed on each of the two branch pipes 302, or a first valve 31 is installed at the connection point between the two branch pipes 302 and the main pipe 301. In this embodiment, with two branch pipes 302, before disassembling the evaporator, the corresponding first valve 31 is closed, ensuring that the interfaces of the branch pipes 302 are sealed. After one branch pipe 302 is disconnected from the main pipe 301, air will not enter the gas pipe 21 and the liquid pipe 22, further ensuring the airtightness of the connecting pipe 2. This structure also eliminates the need for refrigerant collection, making the connection method more flexible and further optimizing the disassembly process of the indoor heat exchanger 1. In other embodiments, three or more branch pipes 302 can be provided according to installation requirements.

[0047] See also Figures 3 to 6 As shown, a first valve 31 is located at the connection between the main pipe 301 and the branch pipe 302. The first valve 31 includes a first locking member 311, an abutment member 312, and a valve core 313 and a push rod 314 disposed within the main pipe 301. The first locking member 311 is axially movable and disposed on the main pipe 301 and detachably connected to the branch pipe 302. The first locking member 311 is a bolt, and the outer wall of the branch pipe 302 is machined with external threads. The bolt is threadedly connected to the branch pipe 302. By tightening or loosening the first locking member 311, the branch pipe 302 can be connected or disconnected from the main pipe 301. One end of the abutment member 312 is connected to the inner wall of the main pipe 301, and the other end of the abutment member 312 extends into the first locking member 311. The abutment member 312 is provided with a through hole, and the abutment member 312 does not completely seal the interface of the main pipe 301. In this embodiment, both the first locking member 311 and the abutment member 312 are mounted on the main tube 301. The first locking member 311 is movable while the abutment member 312 is fixed. The moving positions of the first locking member 311 and the connection positions of the first locking member 311 and the abutment member 312 are different.

[0048] The push rod 314 is movably arranged along the axial direction of the branch pipe 302. The push rod 314 has a first end and a second end. The first end extends out of the valve core 313 for sealing or connecting the valve core 313. The second end extends into the valve core 313. When the push rod 314 is in the first position, the first locking member 311 is connected to the branch pipe 302. During this process, the branch pipe 302 gradually extends into the first locking member 311, which connects the second end with the abutment member 312, and the valve core 313 is connected. When the push rod 314 is in the second position, the first locking member 311 is separated from the branch pipe 302, and the second end is no longer connected to the abutment member 312, and the valve core 313 is sealed.

[0049] In this embodiment, the push rod 314 can be moved to a first position or a second position. By changing the position of the push rod 314, the communication state between the valve core 313 and the branch pipe 302 can be changed. The abutment 312 and the push rod 314 are respectively arranged in the main pipe 301 and the branch pipe 302. After the branch pipe 302 is separated from the main pipe 301, the push rod 314 can seal the interface of the branch pipe 302, reducing human error.

[0050] The first valve 31 also includes a fixed seat 315, a guide seat 316, and an elastic element 317 sleeved on the push rod 314. The fixed seat 315 is located on the valve core 313 seat, and the guide seat 316 is fixedly connected to the push rod 314. The elastic element 317, the guide seat 316, and the fixed seat 315 are arranged sequentially from the first end to the second end. The guide seat 316 can be moved axially along the branch pipe 302 to compress or extend the elastic element 317. The valve core 313 has a connecting hole 318, and a sealing element 319 is provided on the second end. The sealing element 319 is a sealing ring and is used to seal the connecting hole 318.

[0051] In this embodiment, the elastic element 317 is a spring, the push rod 314 is in the first position, and its second end abuts against the abutment 312. During the tightening of the first locking member 311, the abutment 312 pushes the push rod 314 and the fixed seat 315 to move towards the first end, compressing the elastic element 317. At this time, the sealing member 319 moves away from the connecting hole 318, and both the through hole and the connecting hole 318 on the abutment 312 are open, that is, the valve core 313 is open, and the main pipe 301 and the branch pipe 302 are connected. Conversely, when the first locking member 311 is loosened, the elastic element 317 is released and extended, the push rod 314 moves towards the second end, and the sealing member 319 abuts against the side wall of the valve core 313, sealing the connecting hole 318. The present invention is provided with an elastic element 317. By applying external force to loosen or tighten the first locking element 311, the elongation length of the elastic element 317 is changed, so that after the main pipe 301 and the branch pipe 302 are separated, the valve core 313 automatically seals, and after the main pipe 301 and the branch pipe 302 are connected, the valve core 313 automatically opens. The operation is quick and convenient, and it prevents air from entering the air pipe 21 and the liquid pipe 22 to the greatest extent.

[0052] See also Figure 9 and Figure 10 As shown, the first valve 31 is installed on the main pipe 301, and the main pipe 301 is provided with a second locking member 320, which is threadedly connected to the branch pipe 302.

[0053] In this embodiment, the second locking element 320 is a nut. Before disassembling the indoor heat exchanger 1, the first valve 31 is closed first, and then the second locking element 320 is loosened to separate the branch pipe 302 from the main pipe 301. Before installing the indoor heat exchanger 1, the main pipe 301 is connected to the branch pipe 302 first, and then the first valve 31 is opened. The second locking element 320 plays a connecting role, flexibly connecting or separating the branch pipe 302 from the main pipe 301.

[0054] The main pipe 301 is provided with at least one second valve 32, which is used to disconnect the connection between the main pipe 301 and the branch pipe 302. The second valve 32 can reduce the amount of air entering the main pipe 301.

[0055] A third valve 33 is also provided on the main pipe 301. The third valve 33 is connected to an external vacuum machine and is used to evacuate air from the main pipe 301 and / or branch pipe 302. Air will inevitably exist in the branch pipe 302 and the main pipe 301. Before installing the indoor heat exchanger 1, before opening the first valve 31, the second valve 32 is opened first to connect the external vacuum machine to the third valve 33, evacuating air from the main pipe 301 and / or branch pipe 302. Then the first valve 31 is opened to ensure that there is no air in the pipes after the gas pipe 21 and liquid pipe 22 are connected to the connecting pipe 3. Preferably, the third valve 33 has a structure similar to the first valve 31. The third valve 33 does not have a first locking element 311 and an abutment element 312, and requires a working mechanism to push the push rod 314 to move.

[0056] In one specific implementation, the first valve 31 is located at the connection between the main pipe 301 and the branch pipe 302. Two second valves 32 are installed on the main pipe 301, located at both ends of the main pipe 301, with a third valve 33 between them. When branch pipes 302 are installed at both ends of the main pipe 301, the entire unit is shut down and powered off. Tools are used to disassemble the external components and filter screen of the entire unit for separate cleaning. After disassembling the external components, the indoor heat exchanger 1 and air duct components of the indoor unit can be seen. It is confirmed that the gas pipe 21 and liquid pipe 22 are connected to the outdoor connecting pipe and wrapped with insulating sponge. Tools are used to close the two second valves 32 to prevent a passage from forming when the first locking member 311 is loosened, which could allow a large amount of air to enter the main pipe 301. Then, tools are used to loosen the first locking members 311. At this point, the main pipe 301 can be disassembled, or only one locking member can be loosened. After loosening the first locking element 311, the first valve 31 seals the interface of the branch pipe 302, that is, the valve core 313 is in a sealed state. At this time, the indoor heat exchanger 1 is disconnected from the outdoor connecting pipe. Then, remove the screws that fix the indoor heat exchanger 1, and the indoor heat exchanger 1 can be removed from the air duct component. The indoor heat exchanger 1 can be thoroughly cleaned separately. The fan blades can also be removed from the air duct and cleaned separately. The water channel of the bottom shell can also be thoroughly cleaned.

[0057] After all the components requiring cleaning are cleaned, the fan blades are first installed and fixed inside the duct. Then, the indoor heat exchanger 1 is installed on the duct components and secured with screws. The external vacuum pump is connected to the third valve 33 to evacuate the air from the main pipe 301. The two branch pipes 302 are then connected to the main pipe 301. The second valves 32 at both ends of the main pipe 301 are opened, creating passageways between the air pipe 21 and the liquid pipe 22 and the corresponding branch pipes 302 and the main pipe 301. This technical solution prevents a large amount of air from entering the main pipe 301. The second valve 32, used in conjunction with the first valve 31, further improves the airtightness between the main pipe 301 and the branch pipes 302, providing a double seal.

[0058] In one specific implementation, the first valve 31 is installed on the branch pipe 302. The main pipe 301 may not have a second valve 32 or may have only one second valve 32. Preferably, two second valves 32 are installed, and the third valve 33 is installed between the two valves. When branch pipes 302 are installed at both ends of the main pipe 301, the branch pipes 302 are each equipped with a first valve 31. Before disassembling the indoor heat exchanger 1, both first valves 31 are closed, and then the two second locking parts 320 are loosened to remove the main pipe 301. Alternatively, only one of the second locking parts 320 can be loosened. Before installing the indoor heat exchanger 1, the main pipe 301 is connected to the two branch pipes 302, and the second locking parts 320 are tightened. An external vacuum pump is connected to the third valve 33 to evacuate the air from the main pipe 301 and the branch pipes 302, and then the two first valves 31 are opened.

[0059] An indoor unit includes an indoor heat exchanger 1, wherein the indoor heat exchanger 1 is the indoor heat exchanger 1 described above.

[0060] An air conditioner includes an indoor unit, wherein the indoor unit is as described above.

[0061] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0062] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An indoor heat exchanger, characterized in that, The indoor heat exchanger (1) has a gas pipe (21) and a liquid pipe (22); At least one first valve (31) is provided on both the gas pipe (21) and the liquid pipe (22); The air pipe (21) and the liquid pipe (22) have connecting ends that connect to the outdoor connecting pipe, and the connecting ends are detachably connected to the outdoor connecting pipe; Both the gas pipe (21) and the liquid pipe (22) include a first pipe section (201) and a second pipe section (202), and the first pipe section (201) and the second pipe section (202) are connected by a connecting pipe (3), and at least one first valve (31) is provided on the connecting pipe (3). The connecting pipe (3) has a segmented structure, and the connecting pipe (3) is detachably connected to the first pipe segment (201) and / or the second pipe segment (202); the connecting pipe (3) includes a main pipe (301) and at least one branch pipe (302) detachably connected to the main pipe (301), and the first valve (31) is provided at the connection between the main pipe (301) and the branch pipe (302) or on the branch pipe (302); The main pipe (301) is also provided with a third valve (33), and the main pipe (301) is provided with two second valves (32). The two second valves (32) are respectively located at both ends of the main pipe (301). The third valve (33) is connected to an external vacuum machine and is used to draw air from the main pipe (301) and the branch pipe (302). The second valve (32) and the first valve (31) play a double sealing role.

2. The indoor heat exchanger according to claim 1, characterized in that, The first valve (31) is located at the connection between the main pipe (301) and the branch pipe (302). The first valve (31) includes a first locking member (311), an abutment member (312), and a valve core (313) and a push rod (314) located in the main pipe (301). The first locking member (311) is axially movable on the main pipe (301) and detachably connected to the branch pipe (302); one end of the abutment member (312) is connected to the inner wall of the main pipe (301), and the other end of the abutment member (312) extends into the first locking member (311); The push rod (314) is movably disposed along the axial direction of the branch pipe (302). The push rod (314) has a first end and a second end. The first end extends out of the valve core (313) for sealing or connecting the valve core (313). The second end extends into the valve core (313). When the push rod (314) is in a first position, the first locking member (311) is connected to the branch pipe (302), and the second end is connected to the abutment member (312), and the valve core (313) is connected. When the push rod (314) is in a second position, the first locking member (311) is separated from the branch pipe (302), and the valve core (313) is sealed.

3. The indoor heat exchanger according to claim 2, characterized in that, The first valve (31) further includes a fixed seat (315), a guide seat (316), and an elastic element (317) sleeved on the push rod (314). The fixed seat (315) is disposed on the valve core (313) seat. The guide seat (316) is fixedly connected to the push rod (314). The elastic element (317), the guide seat (316), and the fixed seat (315) are arranged sequentially from the first end to the second end. The guide seat (316) can be movably disposed along the axial direction of the branch pipe (302) so that the elastic element (317) can be compressed or extended. The valve core (313) has a connecting hole (318), and a sealing element (319) is provided on the second end, the sealing element (319) being used to seal the connecting hole (318).

4. The indoor heat exchanger according to claim 1, characterized in that, The first valve (31) is mounted on the main pipe (301), and the main pipe (301) is provided with a second locking member (320), which is threadedly connected to the branch pipe (302).

5. An indoor unit, characterized in that, Includes an indoor heat exchanger, wherein the indoor heat exchanger is the indoor unit as described in any one of claims 1 to 4.

6. An air conditioner, characterized in that, Includes an indoor unit, wherein the indoor unit is the indoor unit as described in claim 5.

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