Air conditioner, indoor unit thereof, and assembly method for air conditioner

Abstract

The present application relates to the technical field of refrigeration equipment and discloses an indoor unit for an air conditioner. The indoor unit includes a first refrigerant charging device, which is disposed at a first refrigerant inlet and outlet of the indoor unit and is configured to charge the indoor unit with refrigerant. Thus, the first refrigerant charging device, disposed at the first refrigerant inlet and outlet, can charge the indoor unit with refrigerant and expel air from the refrigerant flow path of the indoor unit. This eliminates the need for vacuuming the indoor unit before installation, resolving the drawback of prior art systems that require vacuuming the indoor unit before installation. This improves the efficiency and safety of the air conditioner installation process, thereby reducing installation costs. The present application also discloses an air conditioner and an assembly method for the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, for example, to an air conditioner and an indoor unit thereof, and an assembly method for the air conditioner. Background Art

[0002] At present, the indoor units of air conditioners on the market, such as variable-frequency air conditioners and some R410A fixed-frequency air conditioners, must be vacuumed before installation. This results in low installation efficiency and high installation risk, as well as high installation costs, causing many inconveniences to companies and users. Summary of the Invention

[0003] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0004] The embodiments of the present disclosure provide an air conditioner, an indoor unit thereof, and an assembly method for the air conditioner, so as to solve the problem that the indoor unit of the existing air conditioner must be vacuumed before installation, resulting in low installation efficiency, high risk factor, and high installation cost.

[0005] According to a first aspect of an embodiment of the present invention, an indoor unit of an air conditioner is provided, the indoor unit comprising: a first refrigerant filling device, disposed at a first refrigerant inlet and outlet of the indoor unit, configured to fill refrigerant into the indoor unit.

[0006] According to a second aspect of an embodiment of the present invention, an air conditioner is provided, comprising: an outdoor unit; a first connecting pipe; a second connecting pipe; and an indoor unit of the air conditioner as described in any one of the above embodiments; wherein the outdoor unit, the first connecting pipe, the indoor unit and the second connecting pipe are connected to form a refrigerant flow path.

[0007] According to a third aspect of an embodiment of the present invention, a method for assembling an air conditioner as described in any one of the above embodiments is provided, comprising: filling refrigerant into a first refrigerant inlet and outlet of an indoor unit through a first refrigerant filling device to discharge air in the indoor unit.

[0008] The air conditioner and indoor unit thereof, and the assembly method for the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0009] Refrigerant can be filled into the indoor unit through a first refrigerant filling device arranged at the first refrigerant inlet and outlet, and the air in the refrigerant flow path of the indoor unit can be discharged. In this way, the indoor unit does not need to be vacuumed before the air conditioner is installed, which solves the disadvantage of the existing technology that the indoor unit needs to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the air conditioner, improving the safety of the air conditioner installation process, and reducing the installation cost.

[0010] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0012] Figure 1 is a structural diagram of an air conditioner provided by an embodiment of the present disclosure;

[0013] Figure 2 yes Figure 1 An enlarged structural diagram of a part of the air conditioner shown;

[0014] Figure 3 yes Figure 1 Another partial enlarged structural diagram of the air conditioner shown;

[0015] Figure 4 1 is a schematic structural diagram of a wrench-type control valve provided in an embodiment of the present disclosure;

[0016] Figure 5 is a schematic structural diagram of a first online tube provided by an embodiment of the present disclosure;

[0017] Figure 6 is a structural schematic diagram of another first online tube provided by an embodiment of the present disclosure;

[0018] Figure 7 is a flow chart of an assembly method provided by an embodiment of the present disclosure;

[0019] Figure 8 It is a flowchart of another assembly method provided by an embodiment of the present disclosure.

[0020] Reference numerals:

[0021] 10 indoor unit, 101 first refrigerant inlet and outlet, 102 second refrigerant inlet and outlet, 20 outdoor unit, 201 third refrigerant inlet and outlet, 202 fourth refrigerant inlet and outlet, 30 first connecting pipe, 40 second connecting pipe, 50 wrench-type control valve, 501 knife gate, 502 valve body, 60 first refrigerant charging device, 70 first control device, 80 second control device, 90 third control device, 100 second refrigerant charging device, 200 third refrigerant charging device, 300 fourth refrigerant charging device, 400 fourth control device. DETAILED DESCRIPTION

[0022] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0023] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0024] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0025] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0026] Unless otherwise stated, the term "plurality" means two or more.

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0028] Combine Figures 1 to 3As shown, an embodiment of the present disclosure provides an indoor unit of an air conditioner, the air conditioner includes an outdoor unit 20, a first connecting pipe 30, an indoor unit 10 and a second connecting pipe 40 connected to form a refrigerant flow path, the indoor unit 10 includes an indoor heat exchanger, the outdoor unit 20 includes an outdoor heat exchanger, a first refrigerant inlet and outlet 101 and a second refrigerant inlet and outlet 102 are arranged on the indoor unit 10, and are both connected to the indoor heat exchanger, the refrigerant flows into the indoor heat exchanger from the first refrigerant inlet and outlet 101, and flows out of the indoor heat exchanger from the second refrigerant inlet and outlet 102, or, the refrigerant flows into the indoor heat exchanger from the second refrigerant inlet and outlet 102, and flows out of the indoor heat exchanger from the first refrigerant inlet and outlet 101. The outdoor unit 20 includes an outdoor heat exchanger. The third refrigerant inlet and outlet 201 and the fourth refrigerant inlet and outlet 202 are provided on the outdoor unit 20 and are both connected to the outdoor heat exchanger. The refrigerant flows into the outdoor heat exchanger from the third refrigerant inlet and outlet 201 and flows out of the outdoor heat exchanger from the fourth refrigerant inlet and outlet 202. Alternatively, the refrigerant flows into the outdoor heat exchanger from the fourth refrigerant inlet and outlet 202 and flows out of the outdoor heat exchanger from the third refrigerant inlet and outlet 201. Figure 1 As shown, when the air conditioner is running, the refrigerant flows along the refrigerant flow path, sequentially flowing through the outdoor unit, the first connection pipe, the indoor unit, and the second connection pipe, or sequentially flowing through the outdoor unit, the second connection pipe, the indoor unit, and the first connection pipe.

[0029] like Figure 1 and Figure 3 As shown, the indoor unit 10 includes a first refrigerant charging device 60 .

[0030] The first refrigerant charging device 60 is disposed at the first refrigerant inlet and outlet 101 of the indoor unit 10 and is configured to charge the refrigerant into the indoor unit 10 .

[0031] Refrigerant is filled into the first refrigerant inlet and outlet 101 in the indoor unit 10 through the first refrigerant filling device 60, and the refrigerant flows into the refrigerant flow path of the indoor unit 10, and the air in the refrigerant flow path of the indoor unit 10 is discharged, so that the indoor unit 10 does not need to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the indoor unit 10 and reducing the installation cost of the air conditioner. In addition, no vacuum equipment is required, which further reduces the installation cost of the air conditioner.

[0032] Optionally, the first refrigerant filling device 60 includes a quick connector, a three-way valve, a two-way valve or a one-way valve.

[0033] When the first refrigerant filling device 60 includes a quick connector, in order to avoid confusion with the following text, the quick connector here is named the first quick connector, the male head of the first quick connector is set on the first refrigerant inlet and outlet 101 of the indoor unit 10 and one of the first connecting pipe 30, and the female head of the first quick connector is set on the other one of the first refrigerant inlet and outlet 101 and the first connecting pipe 30.

[0034] The male end of the first quick connector is disposed at the first refrigerant inlet and outlet 101, and the female end is disposed on the first connection pipe 30 near the first refrigerant inlet and outlet 101. When the male end and the female end of the first quick connector are connected, the first quick connector is conductive, and the first refrigerant inlet and outlet 101 and the first connection pipe 30 are connected via the first quick connector. Alternatively, the female end of the first quick connector is disposed at the first refrigerant inlet and outlet 101, and the male end is disposed on the first connection pipe 30 near the first refrigerant inlet and outlet 101. When the male end and the female end of the first quick connector are connected, the first quick connector is conductive, and the first refrigerant inlet and outlet 101 and the first connection pipe 30 are connected via the first quick connector.

[0035] The first quick connector is a closed-end first quick connector. This means that when the male and female connectors of the first quick connector are not connected, the first quick connector is disconnected, and the first refrigerant inlet and outlet 101 and the first connection pipe 30 are disconnected. When the male and female connectors of the first quick connector are connected, the first quick connector is connected, and the first refrigerant inlet and outlet 101 and the first connection pipe 30 are connected through the first quick connector. Any first quick connector that can achieve the first quick connector connection when the male and female connectors are connected and disconnect when the male and female connectors are not connected is within the scope of protection of this application.

[0036] The first quick connector allows refrigerant to be directly charged to the first refrigerant inlet and outlet 101, eliminating the need to vacuum the indoor unit 10. This solves the drawback of the prior art of requiring the indoor unit 10 to be vacuumed before installation, thereby improving the efficiency and safety of the air conditioner installation process and reducing installation costs. Refrigerant can also be charged to the first connection pipe 30 through the first quick connector, eliminating the need to vacuum the first connection pipe 30.

[0037] When the first refrigerant charging device 60 includes a three-way valve, to avoid confusion with the following text, the three-way valve is referred to as the first three-way valve. The first three-way valve has three interfaces, namely, interface 1, interface 2, and interface 3. Interface 1 is connected to the first refrigerant inlet and outlet 101, interface 2 is connected to the first connection pipe 30, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the indoor unit 10 or the first connection pipe 30 can be extracted through the three interfaces. Interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the first refrigerant inlet and outlet 101 or the first connection pipe 30 through the three interfaces. Optionally, a device with a thimble can be provided at the three interfaces to charge the indoor unit 10 with refrigerant through the first three-way valve, ensuring that the connection pipe is charged with refrigerant.

[0038] When the first refrigerant filling device 60 includes a two-way valve, in order to avoid confusion with the following text, the two-way valve here is named the first two-way valve. The first two-way valve has two interfaces, named interface one and interface two respectively. Interface one is connected to the first online pipe 30, and interface two is connected to the first refrigerant inlet and outlet 101. The device with a pin can be set at the second interface, and the indoor unit 10 can be filled with refrigerant through the first two-way valve to ensure the refrigerant filling of the online pipe.

[0039] When the first refrigerant charging device 60 includes a one-way valve, to avoid confusion below, the one-way valve is referred to herein as the first one-way valve. The conduction direction of the first one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the first refrigerant charging device 60 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the first refrigerant inlet and outlet 101 of the indoor unit 10 or the first connecting pipe 30 through the first one-way valve.

[0040] Alternatively, as Figure 1 and Figure 3 As shown, the indoor unit 10 further includes a first control device 70 , which is disposed at the second refrigerant inlet and outlet 102 of the indoor unit 10 and configured to control the on / off state of the second refrigerant inlet and outlet 102 .

[0041] When refrigerant is charged into the indoor unit 10 through the first refrigerant charging device 60 , the second refrigerant inlet and outlet 102 is controlled to be disconnected by the first control device 70 to prevent the refrigerant charged into the indoor unit 10 from flowing out of the indoor unit 10 through the second refrigerant inlet and outlet 102 .

[0042] In a specific embodiment, refrigerant can also be filled into the indoor unit 10 through the first control device 70. For example, the first control device 70 includes a second quick connector, a second one-way valve, a second one-way valve or a second two-way valve. In other words, the first control device 70 is also configured to fill refrigerant into the second refrigerant inlet and outlet 102, thereby filling refrigerant into the indoor unit 10 and discharging the air in the refrigerant flow path of the indoor unit 10, so that the indoor unit 10 does not need to be vacuumed.

[0043] When the first control device 70 includes a second quick connector, the male head of the second quick connector is arranged on one of the second refrigerant inlet and outlet 102 and the second connecting pipe 40 of the indoor unit 10, and the female head of the second quick connector is arranged on the other of the second refrigerant inlet and outlet 102 and the second connecting pipe 40.

[0044] The male end of the second quick connector is disposed at the second refrigerant inlet and outlet 102, and the female end is disposed at the second connecting pipe 40 near the second refrigerant inlet and outlet 102. When the male and female ends of the second quick connector are connected, the second quick connector is conductive, and the second refrigerant inlet and outlet 102 and the second connecting pipe 40 are connected via the second quick connector. Alternatively, the female end of the second quick connector is disposed at the second refrigerant inlet and outlet 102, and the male end is disposed at the second connecting pipe 40 near the second refrigerant inlet and outlet 102. When the male and female ends of the second quick connector are connected, the second quick connector is conductive, and the second refrigerant inlet and outlet 102 and the second connecting pipe 40 are connected via the second quick connector.

[0045] The second quick connector is a closed-end type. This means that when the male and female connectors of the second quick connector are not connected, the second quick connector is disconnected, and the second refrigerant inlet and outlet 102 is disconnected from the second connecting pipe 40. When the male and female connectors of the second quick connector are connected, the second quick connector is connected, and the second refrigerant inlet and outlet 102 and the second connecting pipe 40 are connected through the second quick connector. Any second quick connector that can achieve the second quick connector connection when the male and female connectors are connected and disconnect when the male and female connectors are not connected is within the scope of protection of this application.

[0046] The second quick connector allows refrigerant to be directly charged to the second refrigerant inlet and outlet 102, eliminating the need to vacuum the indoor unit 10. This solves the drawback of the prior art that requires vacuuming the indoor unit 10 before installing the air conditioner, thereby improving the efficiency and safety of the air conditioner installation process and reducing installation costs. Refrigerant can also be charged to the second connection pipe 40 through the second quick connector, eliminating the need to vacuum the second connection pipe 40.

[0047] When the first control device 70 includes a second three-way valve, the second three-way valve has three interfaces, namely, interface 1, interface 2, and interface 3. Interface 1 is connected to the second refrigerant inlet and outlet 102, interface 2 is connected to the second connection pipe 40, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the indoor unit 10 or the second connection pipe 40 can be extracted through the three interfaces. Interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the second refrigerant inlet and outlet 102 or the second connection pipe 40 through the three interfaces. Optionally, a device with a thimble can be set at the three interfaces to charge the indoor unit 10 with refrigerant through the second three-way valve to ensure that the connection pipe is charged with refrigerant.

[0048] When the first control device 70 includes a second two-way valve, the second two-way valve has two interfaces, namely interface one and interface two. Interface one is connected to the second online pipe 40, and interface two is connected to the second refrigerant inlet and outlet 102. The device with a pin can be set at interface one, and the indoor unit 10 can be filled with refrigerant through the second two-way valve to ensure the refrigerant filling of the indoor unit 10.

[0049] When the first control device 70 includes a second one-way valve, the conduction direction of the second one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the first control device includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the second refrigerant inlet and outlet 102 of the indoor unit 10 or the second connecting pipe 40 through the second one-way valve.

[0050] In another specific embodiment, the refrigerant cannot be charged into the second refrigerant inlet and outlet 102 through the first control device 70. For example, the first control device 70 can be a first wrench-type control valve.

[0051] like Figure 4 As shown, the wrench-type control valve includes a valve body 502 and a gate knife 501 connected to the valve body 502. The gate knife 501 is movably connected to the valve body 502. Adjusting the position of the gate knife 501 relative to the valve body 502 can control the on-off of the wrench-type control valve. For example, the gate knife 501 is rotatably connected to the valve body 502, and the gate knife 501 rotates relative to the valve body 502 between a first position and a second position. Figure 4 The middle gate knife 501 is in the first position. In the first position, the ball valve hole of the valve body 502 is perpendicular to the refrigerant flow path, the wrench type control valve is disconnected, and the refrigerant flow path is disconnected; the gate knife 501 is along Figure 4 Turn in the direction of the middle arrow. When it is turned to the second position, the ball valve hole is parallel to the refrigerant flow path, and the wrench-type control valve is turned on.

[0052] An embodiment of the present disclosure provides an air conditioner, comprising an outdoor unit 20, a first connecting pipe 30, a second connecting pipe 40, and an indoor unit 10 of the air conditioner as any one of the above embodiments; wherein the outdoor unit 20, the first connecting pipe 30, the indoor unit 10 and the second connecting pipe 40 are connected to form a refrigerant flow path.

[0053] The air conditioner provided in the embodiment of the present disclosure includes the indoor unit 10 described in any one of the above embodiments, and thus has all the beneficial effects of the indoor unit 10 described in any one of the above embodiments, which will not be described in detail here.

[0054] Alternatively, as Figures 1 to 3As shown, the air conditioner also includes a second refrigerant filling device 100 and a second control device 80. The second refrigerant filling device 100 is arranged at one end of the first connecting pipe 30 and is configured to fill refrigerant into the first connecting pipe 30; the second control device 80 is arranged at the other end of the first connecting pipe 30 and is configured to control the on and off of the first connecting pipe 30; wherein, one of the second refrigerant filling device 100 and the second control device 80 is connected to the first refrigerant filling device 60, and the other of the second refrigerant filling device 100 and the second control device 80 is connected to the third refrigerant inlet and outlet 201 of the outdoor unit 20.

[0055] Refrigerant is filled into the first connecting pipe 30 through the second refrigerant filling device 100, and the refrigerant flows into the first connecting pipe 30, and the air in the first connecting pipe 30 is discharged. At this time, the second control device 80 controls the other end of the first connecting pipe 30 to be disconnected, so as to prevent the refrigerant in the first connecting pipe 30 from flowing out from the other end of the first connecting pipe 30, so that the first connecting pipe 30 does not need to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the air conditioner and reducing the installation cost of the air conditioner. In addition, no vacuuming equipment is required, which further reduces the installation cost of the air conditioner.

[0056] Optionally, the second refrigerant charging device 100 includes a third quick connector, a third three-way valve, a third two-way valve, or a third one-way valve. The second refrigerant charging device 100 and the second control device 80 are described below using the example of the second refrigerant charging device 100 being connected to the first refrigerant charging device 60 and the second control device 80 being connected to the third refrigerant inlet and outlet 201.

[0057] When the second refrigerant filling device 100 includes a third quick connector, if the first refrigerant filling device 60 includes a first quick connector, the third quick connector and the first quick connector are the same component, that is, the same quick connector, and the male head of the quick connector is set on the first refrigerant inlet and outlet 101 of the indoor unit 10 and one of the first connecting pipe 30, and the female head is set on the other of the first refrigerant inlet and outlet 101 and the first connecting pipe 30.

[0058] When the second refrigerant filling device 100 includes a third quick connector, if the first refrigerant filling device 60 does not include the first quick connector, the male head of the third quick connector is connected to the first refrigerant filling device 60, and the interface on the first refrigerant filling device 60 for connecting to the first connecting pipe 30 forms one of the male head and female head of the third quick connector, and the other of the male head and female head of the third quick connector is arranged on the first connecting pipe 30.

[0059] The third quick connector adopts a closed-end third quick connector.

[0060] When the second refrigerant charging device 100 includes a third three-way valve, the third three-way valve has three interfaces, namely interface 1, interface 2, and interface 3. Interface 1 is connected to the first refrigerant charging device 60, interface 2 is connected to the first connection pipe 30, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the indoor unit 10 or the first connection pipe 30 can be extracted through the three interfaces, wherein interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the first refrigerant inlet and outlet 101 or the first connection pipe 30 through the three interfaces. Optionally, a device with a thimble can be set at the three interfaces to charge the first connection pipe 30 with refrigerant through the third three-way valve to ensure that the first connection pipe 30 is fully charged with refrigerant.

[0061] When the second refrigerant filling device 100 includes a third two-way valve, the third two-way valve has two interfaces, named interface one and interface two respectively. Interface one is connected to the first online pipe 30, and interface two is connected to the first refrigerant filling device 60. The device with a thimble can be set at interface one, and the first online pipe 30 can be filled with refrigerant through the third two-way valve to ensure the refrigerant filling of the first online pipe 30.

[0062] When the second refrigerant charging device 100 includes a third one-way valve, the conduction direction of the third one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the second refrigerant charging device 100 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the first connection pipe 30 of the indoor unit 10 through the third one-way valve.

[0063] Optionally, the indoor unit 10 further includes a second control device 80 , which is disposed on the first connection pipe 30 and configured to control the on / off state of the first connection pipe 30 .

[0064] When refrigerant is filled into the first connecting pipe 30 through the second refrigerant filling device 100, the first connecting pipe 30 is disconnected by controlling the second control device 80 to prevent the refrigerant filled into the first connecting pipe 30 from flowing out of the first connecting pipe 30 from the second refrigerant inlet and outlet 102.

[0065] In a specific embodiment, refrigerant can also be filled into the first connecting pipe 30 through the second control device 80. For example, the second control device 80 includes a fourth quick connector, a fourth three-way valve, a fourth one-way valve or a fourth two-way valve. In other words, the second control device 80 is also configured to fill the first connecting pipe 30 with refrigerant, thereby filling the first connecting pipe 30 with refrigerant and discharging the air in the first connecting pipe 30, so that the first connecting pipe 30 does not need to be vacuumed.

[0066] When the second control device 80 includes a fourth quick connector, the male head of the fourth quick connector is arranged on one of the third refrigerant inlet and outlet 201 of the outdoor unit 20 and the first connecting pipe 30, and the female head of the fourth quick connector is arranged on the other of the third refrigerant inlet and outlet 201 and the first connecting pipe 30.

[0067] The male end of the fourth quick connector is disposed at the third refrigerant inlet and outlet 201, and the female end is disposed on the first connection pipe 30 near the third refrigerant inlet and outlet 201. When the male end and the female end of the fourth quick connector are connected, the fourth quick connector is conductive, and the third refrigerant inlet and outlet 201 and the first connection pipe 30 are connected via the fourth quick connector. Alternatively, the female end of the fourth quick connector is disposed at the third refrigerant inlet and outlet 201, and the male end is disposed on the first connection pipe 30 near the third refrigerant inlet and outlet 201. When the male end and the female end of the fourth quick connector are connected, the fourth quick connector is conductive, and the third refrigerant inlet and outlet 201 and the first connection pipe 30 are connected via the fourth quick connector.

[0068] The fourth quick connector adopts a closed-end fourth quick connector.

[0069] The fourth quick connector allows refrigerant to be directly charged into the third refrigerant inlet and outlet 201. The refrigerant charged through the third refrigerant inlet and outlet 201 flows into the refrigerant flow path of the outdoor unit 20, eliminating the need to evacuate the outdoor unit 20. Refrigerant can also be charged into the first connection pipe 30 through the fourth quick connector, eliminating the need to evacuate the first connection pipe 30.

[0070] When the second control device 80 includes a fourth three-way valve, the fourth three-way valve has three interfaces, namely, interface 1, interface 2, and interface 3. Interface 1 is connected to the third refrigerant inlet and outlet 201, interface 2 is connected to the first connection pipe 30, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the outdoor unit 20 or the first connection pipe 30 can be extracted through the three interfaces. Interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the third refrigerant inlet and outlet 201 or the first connection pipe 30 through the three interfaces. Optionally, a device with a thimble can be set at the three interfaces to charge the first connection pipe 30 with refrigerant through the fourth three-way valve to ensure that the first connection pipe 30 is charged with refrigerant.

[0071] When the second control device 80 includes a fourth two-way valve, the fourth two-way valve has two interfaces, named interface one and interface two, interface one is connected to the first online pipe 30, and interface two is connected to the third refrigerant inlet and outlet 201. The device with a pin can be set at interface one, and the first online pipe 30 can be filled with refrigerant through the fourth two-way valve to ensure the refrigerant filling of the first online pipe 30.

[0072] When the second control device 80 includes a fourth one-way valve, the conduction direction of the fourth one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the second refrigerant charging device 100 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the third refrigerant inlet and outlet 201 of the outdoor unit 20 or the first connecting pipe 30 through the fourth one-way valve.

[0073] In another specific embodiment, the refrigerant cannot be charged into the second connecting pipe 40 through the second control device 80. For example, the second control device 80 can be a second wrench-type control valve.

[0074] Optionally, the air conditioner further includes a third refrigerant charging device 200 and a third control device 90. The third refrigerant charging device 200 is disposed at one end of the second connecting pipe 40 and is configured to charge refrigerant into the second connecting pipe 40. The third control device 90 is disposed at the other end of the second connecting pipe 40 and is configured to control the on / off state of the second connecting pipe 40. One of the third refrigerant charging device 200 and the third control device 90 is connected to the first control device 70, and the other of the third refrigerant charging device 200 and the third control device 90 is connected to the fourth refrigerant inlet and outlet 202 of the outdoor unit 20.

[0075] Refrigerant is filled into the second connecting pipe 40 through the third refrigerant filling device 200, and the refrigerant flows into the second connecting pipe 40, and the air in the second connecting pipe 40 is discharged. At this time, the other end of the second connecting pipe 40 is disconnected by the second control device 80 to prevent the refrigerant in the second connecting pipe 40 from flowing out from the other end of the second connecting pipe 40, so that the second connecting pipe 40 does not need to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the air conditioner and reducing the installation cost of the air conditioner. In addition, no vacuum equipment is required, which further reduces the installation cost of the air conditioner.

[0076] Optionally, the third refrigerant charging device 200 includes a fifth quick connector, a fifth three-way valve, a fifth two-way valve, or a fifth one-way valve. The following description of the third refrigerant charging device 200 and the third control device 90 is based on an example in which the third refrigerant charging device 200 is connected to the first control device 70 and the third control device 90 is connected to the fourth refrigerant inlet and outlet 202.

[0077] When the third refrigerant filling device 200 includes a fifth quick connector, if the first control device 70 includes a second quick connector, the fifth quick connector and the second quick connector are the same component, that is, the same quick connector, and the male head of the quick connector is arranged on one of the second refrigerant inlet and outlet 102 and the second connecting pipe 40 of the indoor unit 10, and the female head is arranged on the other of the second refrigerant inlet and outlet 102 and the second connecting pipe 40.

[0078] When the third refrigerant filling device 200 includes a fifth quick connector, if the first control device 70 does not include a first quick connector, the male head of the fifth quick connector is connected to the first control device 70, and the interface on the first control device 70 for connecting to the second connecting pipe 40 forms one of the male head and the female head of the fifth quick connector, and the other of the male head and the female head of the fifth quick connector is arranged on the second connecting pipe 40.

[0079] The fifth quick connector adopts a closed-end fifth quick connector.

[0080] When the third refrigerant charging device 200 includes a fifth three-way valve, the fifth three-way valve has three interfaces, designated as interface 1, interface 2, and interface 3. Interface 1 is connected to the first control device 70, interface 2 is connected to the second connection pipe 40, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the indoor unit 10 or the second connection pipe 40 can be extracted through interface 3. Interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the second refrigerant inlet and outlet 102 or the second connection pipe 40 through interface 3. Optionally, a device with a thimble can be provided at interface 3 to charge refrigerant into the second connection pipe 40 through the fifth three-way valve, thereby ensuring that the second connection pipe 40 is fully charged with refrigerant.

[0081] When the third refrigerant filling device 200 includes a fifth two-way valve, the fifth two-way valve has two interfaces, named interface one and interface two respectively. Interface one is connected to the second online pipe 40, and interface two is connected to the first control device 70. The device with a thimble can be set at interface one, and the second online pipe 40 can be filled with refrigerant through the fifth two-way valve to ensure the refrigerant filling of the second online pipe 40.

[0082] When the third refrigerant charging device 200 includes a fifth one-way valve, the conduction direction of the fifth one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the third refrigerant charging device 200 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the second connecting pipe 40 of the indoor unit 10 through the fifth one-way valve.

[0083] Optionally, the indoor unit 10 further includes a third control device 90 , which is disposed on the second connection pipe 40 and configured to control the on / off state of the second connection pipe 40 .

[0084] When refrigerant is filled into the second connecting pipe 40 through the third refrigerant filling device 200, the second connecting pipe 40 is disconnected by controlling the third control device 90 to prevent the refrigerant filled into the second connecting pipe 40 from flowing out of the second connecting pipe 40 from the second refrigerant inlet and outlet 102.

[0085] In a specific embodiment, refrigerant can also be filled into the second connecting pipe 40 through the third control device 90. For example, the third control device 90 includes a sixth quick connector, a sixth three-way valve, a sixth one-way valve or a sixth two-way valve. In other words, the third control device 90 is also configured to fill the second connecting pipe 40 with refrigerant, thereby filling the second connecting pipe 40 with refrigerant and discharging the air in the second connecting pipe 40, so that the second connecting pipe 40 does not need to be vacuumed.

[0086] When the third control device 90 includes a sixth quick connector, the male head of the sixth quick connector is arranged on one of the fourth refrigerant inlet and outlet 202 and the second connecting pipe 40 of the outdoor unit 20, and the female head of the sixth quick connector is arranged on the other of the fourth refrigerant inlet and outlet 202 and the second connecting pipe 40.

[0087] The male connector of the sixth quick connector is disposed at the fourth refrigerant inlet and outlet 202, and the female connector is disposed at the second connection pipe 40 near the fourth refrigerant inlet and outlet 202. When the male and female connectors of the sixth quick connector are connected, the sixth quick connector is conductive, and the fourth refrigerant inlet and outlet 202 and the second connection pipe 40 are connected via the sixth quick connector. Alternatively, the female connector of the sixth quick connector is disposed at the fourth refrigerant inlet and outlet 202, and the male connector is disposed at the second connection pipe 40 near the fourth refrigerant inlet and outlet 202. When the male and female connectors of the sixth quick connector are connected, the sixth quick connector is conductive, and the fourth refrigerant inlet and outlet 202 and the second connection pipe 40 are connected via the sixth quick connector.

[0088] The sixth quick connector adopts a closed-end sixth quick connector.

[0089] The sixth quick connector allows refrigerant to be directly charged to the fourth refrigerant inlet and outlet 202. The refrigerant charged through the fourth refrigerant inlet and outlet 202 flows into the refrigerant flow path of the outdoor unit 20, eliminating the need to evacuate the outdoor unit 20. Refrigerant can also be charged to the second connection pipe 40 through the sixth quick connector, eliminating the need to evacuate the second connection pipe 40.

[0090] When the third control device 90 includes a sixth three-way valve, the sixth three-way valve has three interfaces, namely, interface 1, interface 2, and interface 3. Interface 1 is connected to the fourth refrigerant inlet and outlet 202, interface 2 is connected to the second connection pipe 40, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the outdoor unit 20 or the second connection pipe 40 can be extracted through the three interfaces. Interface 1 selectively connects to one of interfaces 2 and 3, or interface 2 selectively connects to one of interfaces 1 and 3. Refrigerant can also be charged into the fourth refrigerant inlet and outlet 202 or the second connection pipe 40 through interface 3. Optionally, a device with a thimble can be provided at interface 3 to charge the second connection pipe 40 with refrigerant through the sixth three-way valve to ensure that the second connection pipe 40 is fully charged with refrigerant.

[0091] When the third control device 90 includes a sixth two-way valve, the sixth two-way valve has two interfaces, named interface one and interface two, interface one is connected to the second online pipe 40, and interface two is connected to the fourth refrigerant inlet and outlet 202. The device with a thimble can be set at interface one, and the second online pipe 40 can be filled with refrigerant through the sixth two-way valve to ensure the refrigerant filling of the second online pipe 40.

[0092] When the third control device 90 includes a sixth one-way valve, the conduction direction of the sixth one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the third refrigerant charging device 200 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the fourth refrigerant inlet and outlet 202 of the outdoor unit 20 or the second connecting pipe 40 through the sixth one-way valve.

[0093] In another specific embodiment, the refrigerant cannot be charged into the second connecting pipe 40 through the third control device 90. For example, the third control device 90 can be a third wrench-type control valve.

[0094] Alternatively, as Figure 1 and Figure 2 As shown, one of the third refrigerant inlet and outlet 201 and the fourth refrigerant inlet and outlet 202 of the outdoor unit 20 is connected to a fourth refrigerant charging device 300, and the other is connected to a fourth control device 400. The fourth refrigerant charging device 300 is configured to charge refrigerant into the outdoor unit 20 and exhaust air from the refrigerant flow path of the outdoor unit 20, eliminating the need for vacuuming the outdoor unit 20 and further improving the installation efficiency of the air conditioner. The fourth control device 400 is configured to control the on / off of the refrigerant flow path of the outdoor unit 20.

[0095] When the refrigerant is charged into the outdoor unit 20 through the fourth refrigerant charging device 300 , the fourth control device 400 is closed to prevent the refrigerant charged in the outdoor unit 20 from flowing out from the fourth control device 400 .

[0096] The fourth refrigerant charging device 300 includes a seventh quick connector, a seventh three-way valve, a seventh two-way valve, or a seventh one-way valve. For example, the fourth refrigerant charging device 300 is connected to the second control device 80 and disposed at the third refrigerant inlet and outlet 201, while the fourth control device 400 is connected to the third control device 90 and disposed at the fourth refrigerant inlet and outlet 202.

[0097] When the fourth refrigerant filling device 300 includes a seventh quick connector, if the second control device 80 includes a fourth quick connector, the seventh quick connector and the fourth quick connector are the same component, that is, the same quick connector, and the male head of the quick connector is arranged on the other end of the first connecting pipe 30 and one of the third refrigerant inlet and outlet 201, and the female head is arranged on the other end of the first connecting pipe 30 and the other one of the third refrigerant inlet and outlet 201.

[0098] The seventh quick connector adopts a closed-end seventh quick connector.

[0099] When the fourth refrigerant charging device 300 includes a seventh three-way valve, the seventh three-way valve has three interfaces, namely, interface 1, interface 2, and interface 3. Interface 1 is connected to the second control device 80, interface 2 is connected to the first connection pipe 30, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the outdoor unit 20 or the first connection pipe 30 can be extracted through the three interfaces, wherein interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the third refrigerant inlet and outlet 201 or the first connection pipe 30 through the three interfaces. Optionally, a device with a thimble can be set at the three interfaces to charge the outdoor unit 20 with refrigerant through the seventh three-way valve to ensure that the outdoor unit 20 is fully charged with refrigerant.

[0100] When the fourth refrigerant filling device 300 includes the seventh two-way valve, the seventh two-way valve has two interfaces, named as interface one and interface two, interface one is connected to the first connecting pipe 30, and interface two is connected to the second control device 80. The device with a thimble can be set at interface one, and the outdoor unit 20 can be filled with refrigerant through the seventh two-way valve to ensure the refrigerant filling of the outdoor unit 20.

[0101] When the fourth refrigerant charging device 300 includes a seventh one-way valve, the conduction direction of the seventh one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the fourth refrigerant charging device 300 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the outdoor unit 20 through the seventh one-way valve.

[0102] In a specific embodiment, refrigerant can also be filled into the outdoor unit 20 through the fourth control device 400. For example, the fourth control device 400 includes an eighth quick connector, an eighth three-way valve, an eighth one-way valve or an eighth two-way valve. In other words, the fourth control device 400 is also configured to fill the outdoor unit 20 with refrigerant, thereby filling the outdoor unit 20 with refrigerant and discharging the air in the outdoor unit 20, so that the outdoor unit 20 does not need to be vacuumed.

[0103] When the fourth control device 400 includes an eighth quick connector, and when the second control device 80 includes a fourth quick connector, the eighth quick connector and the fourth quick connector are the same quick connector.

[0104] When the second control device 80 does not include a fourth quick connector, an eighth quick connector is provided. The male connector of the eighth quick connector is provided at one of the fourth refrigerant inlet and outlet 202 and the second connecting pipe 40 of the outdoor unit 20, and the female connector of the eighth quick connector is provided at the other of the fourth refrigerant inlet and outlet 202 and the second connecting pipe 40. The male connector of the eighth quick connector is provided at the fourth refrigerant inlet and outlet 202, and the female connector is provided on the second connecting pipe 40 near the fourth refrigerant inlet and outlet 202. When the male and female connectors of the eighth quick connector are connected, the eighth quick connector is conductive, and the fourth refrigerant inlet and outlet 202 and the second connecting pipe 40 are connected via the eighth quick connector. Alternatively, the female connector of the eighth quick connector is provided at the fourth refrigerant inlet and outlet 202, and the male connector is provided on the second connecting pipe 40 near the fourth refrigerant inlet and outlet 202. When the male and female connectors of the eighth quick connector are connected, the eighth quick connector is conductive, and the fourth refrigerant inlet and outlet 202 and the second connecting pipe 40 are connected via the eighth quick connector.

[0105] The eighth quick connector adopts the eighth quick connector with closed ends.

[0106] The eighth quick connector allows refrigerant to be directly charged to the fourth refrigerant inlet and outlet 202. The refrigerant charged through the fourth refrigerant inlet and outlet 202 flows into the refrigerant flow path of the outdoor unit 20, eliminating the need to evacuate the outdoor unit 20. Refrigerant can also be charged to the second connection pipe 40 through the eighth quick connector, eliminating the need to evacuate the second connection pipe 40.

[0107] When the fourth control device 400 includes an eighth three-way valve, the eighth three-way valve has three interfaces, namely, interface 1, interface 2, and interface 3. Interface 1 is connected to the fourth refrigerant inlet and outlet 202, interface 2 is connected to the second connection pipe 40, and interface 3 serves as a maintenance port. When maintenance is required, refrigerant in the outdoor unit 20 or the second connection pipe 40 can be extracted through the three interfaces. Interface 1 selectively connects to one of interface 2 and interface 3, or interface 2 selectively connects to one of interface 1 and interface 3. Refrigerant can also be charged into the fourth refrigerant inlet and outlet 202 or the second connection pipe 40 through interface 3. Optionally, a device with a thimble can be provided at interface 3 to charge refrigerant into the outdoor unit 20 through the eighth three-way valve to ensure that the outdoor unit 20 is fully charged with refrigerant.

[0108] When the fourth control device 400 includes the eighth two-way valve, the eighth two-way valve has two interfaces, named as interface one and interface two, interface one is connected to the second connecting pipe 40, and interface two is connected to the fourth refrigerant inlet and outlet 202. The device with a pin can be set at the second interface, and the outdoor unit 20 can be filled with refrigerant through the eighth two-way valve to ensure the refrigerant filling of the outdoor unit 20.

[0109] When the fourth control device 400 includes an eighth one-way valve, the conduction direction of the eighth one-way valve is the same as the flow direction of the refrigerant in the refrigerant flow path. When the third refrigerant charging device 200 includes a one-way valve, the air conditioner can be a cooling-only type air conditioner, and refrigerant can also be charged into the fourth refrigerant inlet and outlet 202 of the outdoor unit 20 or the second connecting pipe 40 through the eighth one-way valve.

[0110] In another specific embodiment, the refrigerant cannot be charged into the outdoor unit 20 through the fourth control device 400. For example, the fourth control device 400 can be a fourth wrench-type control valve.

[0111] The present disclosure provides an assembly method for an air conditioner as described in any one of the above embodiments. Figure 7 Shown, including:

[0112] In step S70 , refrigerant is charged into the first refrigerant inlet and outlet 101 of the indoor unit 10 through the first refrigerant charging device 60 to discharge the air in the indoor unit 10 .

[0113] Refrigerant is filled into the first refrigerant inlet and outlet 101 in the indoor unit 10 through the first refrigerant filling device 60, and the refrigerant flows into the refrigerant flow path of the indoor unit 10, and the air in the refrigerant flow path of the indoor unit 10 is discharged, so that the indoor unit 10 does not need to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the indoor unit 10 and reducing the installation cost of the air conditioner. In addition, no vacuum equipment is required, which further reduces the installation cost of the air conditioner.

[0114] Optionally, step S70 of charging refrigerant into the first refrigerant inlet and outlet 101 of the indoor unit 10 through the first refrigerant charging device 60 may further include:

[0115] The first control device 70 is controlled to be closed.

[0116] When refrigerant is charged into the indoor unit 10 through the first refrigerant charging device 60 , the second refrigerant inlet and outlet 102 is controlled to be disconnected by the first control device 70 to prevent the refrigerant charged into the indoor unit 10 from flowing out of the indoor unit 10 through the second refrigerant inlet and outlet 102 .

[0117] Alternatively, as Figure 8 As shown, the assembly method includes:

[0118] In step S802 , refrigerant is charged into the first refrigerant inlet and outlet 101 of the indoor unit 10 through the first refrigerant charging device 60 to discharge the air in the indoor unit 10 .

[0119] Step S804: Control the first control device 70 to shut down.

[0120] In step S806 , refrigerant is injected into the first connecting pipe 30 through the second refrigerant injecting device 100 to discharge the air in the first connecting pipe 30 .

[0121] Step S808: Control the second control device 80 to turn off.

[0122] Refrigerant is filled into the first connecting pipe 30 through the second refrigerant filling device 100, and the refrigerant flows into the first connecting pipe 30, and the air in the first connecting pipe 30 is discharged. At this time, the second control device 80 controls the other end of the first connecting pipe 30 to be disconnected, so as to prevent the refrigerant in the first connecting pipe 30 from flowing out from the other end of the first connecting pipe 30, so that the first connecting pipe 30 does not need to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the air conditioner and reducing the installation cost of the air conditioner. In addition, no vacuuming equipment is required, which further reduces the installation cost of the air conditioner.

[0123] In step S810 , refrigerant is charged into the second connecting pipe 40 through the third refrigerant charging device 200 to discharge the air in the second connecting pipe 40 .

[0124] Step S812: Control the third control device 90 to turn off.

[0125] Steps S802 and S804 complete the refrigerant charging of the indoor unit, eliminating the need for vacuuming the indoor unit. Steps S806 and S808 complete the refrigerant charging of the first connection pipe, eliminating the need for vacuuming the first connection pipe. Steps S810 and S812 complete the refrigerant charging of the second connection pipe, eliminating the need for vacuuming the second connection pipe. There is no specific order for charging the refrigerant in the first connection pipe, the second connection pipe, and the indoor unit.

[0126] Refrigerant is filled into the second connecting pipe 40 through the third refrigerant filling device 200, and the refrigerant flows into the second connecting pipe 40, and the air in the second connecting pipe 40 is discharged. At this time, the other end of the second connecting pipe 40 is disconnected by the second control device 80 to prevent the refrigerant in the second connecting pipe 40 from flowing out from the other end of the second connecting pipe 40, so that the second connecting pipe 40 does not need to be vacuumed before the air conditioner is installed, thereby improving the installation efficiency of the air conditioner and reducing the installation cost of the air conditioner. In addition, no vacuum equipment is required, which further reduces the installation cost of the air conditioner.

[0127] The air conditioner and assembly method of the present application are described below by taking the first refrigerant filling device 60 as provided at the first refrigerant inlet and outlet 101, the first control device 70 as provided at the second refrigerant inlet and outlet 102, the second refrigerant filling device 100 as provided at one end of the first connecting pipe 30, the second control device 80 as provided at the other end of the first connecting pipe 30, the third refrigerant filling device 200 as provided at one end of the second connecting pipe 40, the third control device 90 as provided at the other end of the second connecting pipe 40, the fourth refrigerant filling device 300 as provided at the third refrigerant inlet and outlet 201, and the fourth control device 400 as provided at the fourth refrigerant inlet and outlet 202 as an example. At this time, the first refrigerant filling device 60 and the second refrigerant filling device 100 are connected, the first control device 70 and the third refrigerant filling device 200 are connected, the second control device 80 and the fourth refrigerant filling device 300 are connected, and the third control device 90 and the fourth control device 400 are connected.

[0128] In a first specific embodiment, the first refrigerant filling device 60 is a first quick connector, the second refrigerant filling device is a second quick connector, the first quick connector and the second quick connector are the same quick connector, one of the male head and the female head of the first quick connector is arranged on the first refrigerant inlet and outlet 101, and the other of the male head and the female head of the first quick connector is arranged on one end of the first connecting pipe 30, or it can be understood that the first refrigerant filling device 60 and the second refrigerant filling device 100 are respectively the male head and the female head of the same quick connector, or the first refrigerant filling device 60 and the second refrigerant filling device 100 are respectively the female head and the male head of the same quick connector. The first control device 70 is a second quick connector, and the third refrigerant charging device 200 is a fifth quick connector. The second quick connector and the fifth quick connector are the same connector. One of the male and female ends of the second quick connector is located on the second refrigerant inlet and outlet 102, and the other of the male and female ends of the second quick connector is located on one end of the second connection pipe 40. Alternatively, it can be understood that the first control device 70 and the third refrigerant charging device 200 are the male and female ends of the same quick connector, respectively, or the first control device 70 and the third refrigerant charging device 200 are the female and male ends of the same quick connector, respectively. The second control device 80 is a fourth quick connector. One of the male and female ends of the fourth quick connector is located on the other end of the first connection pipe 30. The fourth refrigerant charging device 300 is a seventh three-way valve. The interface on the seventh three-way valve for connecting to the first connection pipe 30 forms the other of the male and female ends of the fourth quick connector. The third control device 90 is the sixth quick connector, the fourth control device 400 is the eighth two-way valve, one of the male and female heads of the sixth quick connector is arranged at the other end of the second online pipe 40, and the interface on the eighth two-way valve for connecting to the second online pipe 40 forms the other of the male and female heads of the sixth quick connector.

[0129] The amount of refrigerant (coolant) partially filled in the air-conditioning outdoor unit 20 is a, the amount of refrigerant filled in the evaporator (indoor heat exchanger) and other pipelines of the air-conditioning indoor unit 10 is b, the total amount of refrigerant filled in the first connecting pipe 30 and the second connecting pipe 40 is c, and the total refrigerant filling amount is a+b+c.

[0130] Before leaving the factory, the air conditioner is charged with three parts a+b+c according to the refrigerant quantity determined in advance. All three parts are equipped with quick connectors and can be directly charged with refrigerant.

[0131] When the air conditioner is installed, there is no need to perform a vacuum operation. The quick connectors of the indoor unit 10, the outdoor unit 20, the first connection pipe 30, and the second connection pipe 40 can be quickly and seamlessly connected.

[0132] In a second specific embodiment, Figure 4 As shown, the difference from the first specific embodiment is that the second control device 80 is a second wrench type control valve, the third control device 90 is a third wrench type control valve, and the structure of the wrench type control valve is as shown in FIG. Figure 4 shown.

[0133] The amount of refrigerant partially filled in the air-conditioning outdoor unit 20 is a, the amount of refrigerant filled in the evaporator and other pipelines of the air-conditioning indoor unit 10 is b, the total amount of refrigerant filled in the first connecting pipe 30 and the second connecting pipe 40 is c, and the total refrigerant filling amount is a+b+c.

[0134] Before leaving the factory, the air conditioner is charged with three parts a+b+c according to the refrigerant quantity determined in advance. All three parts are equipped with quick connectors and can be directly charged with refrigerant.

[0135] There is no need to perform a vacuum operation when installing the air conditioner. The first refrigerant inlet and outlet 101 of the indoor unit 10 is directly and seamlessly connected to one end of the first connecting pipe 30 through the first quick connector. The third refrigerant inlet and outlet 201 of the outdoor unit 20 is connected to the bell mouth of the second wrench-type control valve at the other end of the first connecting pipe 30. The fourth refrigerant inlet and outlet 202 of the outdoor unit 20 is connected to the bell mouth of the third wrench-type control valve at the other end of the second connecting pipe 40. After all connections are completed (forming a conductive refrigerant flow path), open the second wrench-type control valve and the third wrench-type control valve, and use the hexagon socket to unscrew the switches of the eighth two-way valve and the seventh three-way valve. In this way, the entire system is connected.

[0136] In a third specific embodiment, Figure 5As shown, the first refrigerant filling device 60 is a first three-way valve, the second refrigerant filling device 100 is a third two-way valve, the first three-way valve is used to form one of the male and female ends at the connection with the third two-way valve, and the third two-way valve is used to form the other of the male and female ends at the connection with the first three-way valve. The male and female ends are assembled to form a quick connector, and the quick connector is a quick connector with closed ends. The first control device 70 is a second two-way valve, and the third refrigerant filling device 200 is a fifth one-way valve. The second two-way valve is used to form one of the male and female ends at the connection with the fifth one-way valve, and the fifth one-way valve is used to form the other of the male and female ends at the connection with the second two-way valve. The male and female ends are assembled to form a quick connector, and the quick connector is a quick connector with closed ends. The second control device 80 is a fourth one-way valve, and the fourth refrigerant charging device 300 is a seventh three-way valve. The interface on the seventh three-way valve for connecting to the first online pipe 30 forms one of the male and female quick connectors, and the interface on the fourth one-way valve for connecting to the third refrigerant inlet and outlet 201 forms the other of the male and female quick connectors, which is a two-end closed quick connector. The third control device 90 is a sixth two-way valve, and the fourth control device 400 is an eighth two-way valve. The interface on the sixth two-way valve for connecting to the eighth two-way valve forms one of the male and female quick connectors, and the interface on the eighth two-way valve for connecting to the sixth two-way valve forms the other of the male and female quick connectors, which is a two-end closed quick connector.

[0137] The amount of refrigerant partially filled in the air-conditioning outdoor unit 20 is a, the amount of refrigerant filled in the evaporator and other pipelines of the air-conditioning indoor unit 10 is b, the total amount of refrigerant filled in the first connecting pipe 30 and the second connecting pipe 40 is c, and the total refrigerant filling amount is a+b+c.

[0138] Before the air conditioner leaves the factory, it is charged in three parts according to the refrigerant quantity determined in advance, namely a+b+c. All three parts can be directly charged with refrigerant.

[0139] There is no need to perform a vacuum operation when installing the air conditioner. After connecting the indoor unit 10, the first connecting pipe 30, the second connecting pipe 40 and the outdoor unit 20 with a wrench, use the inner hexagon socket to open the valves of all two-way valves and three-way valves to connect the indoor and outdoor units of the air conditioner.

[0140] In a fourth specific embodiment, Figure 6As shown, the first refrigerant filling device 60 is a first three-way valve, the second refrigerant filling device 100 is a third three-way valve, the first three-way valve is used to form one of the male and female ends at the connection with the third three-way valve, the third three-way valve is used to form the other of the male and female ends at the connection with the first three-way valve, the male and female ends are assembled to form a quick connector, and the quick connector is a quick connector with closed ends. The first control device 70 is a second two-way valve, and the third refrigerant filling device 200 is a fifth three-way valve. The second two-way valve is used to form one of the male and female ends at the connection with the fifth three-way valve, the fifth three-way valve is used to form the other of the male and female ends at the connection with the second two-way valve, the male and female ends are assembled to form a quick connector, and the quick connector is a quick connector with closed ends. The second control device 80 is a fourth two-way valve, and the fourth refrigerant charging device 300 is a seventh three-way valve. The interface on the seventh three-way valve for connecting to the first online pipe 30 forms one of the male and female quick connectors, and the interface on the fourth two-way valve for connecting to the third refrigerant inlet and outlet 201 forms the other of the male and female quick connectors, which is a two-end closed quick connector. The third control device 90 is a sixth two-way valve, and the fourth control device 400 is an eighth two-way valve. The interface on the sixth two-way valve for connecting to the eighth two-way valve forms one of the male and female quick connectors, and the interface on the eighth two-way valve for connecting to the sixth two-way valve forms the other of the male and female quick connectors, which is a two-end closed quick connector.

[0141] The amount of refrigerant partially filled in the air-conditioning outdoor unit 20 is a, the amount of refrigerant filled in the evaporator and other pipelines of the air-conditioning indoor unit 10 is b, the total amount of refrigerant filled in the first connecting pipe 30 and the second connecting pipe 40 is c, and the total refrigerant filling amount is: a+b+c.

[0142] Before the air conditioner leaves the factory, it is charged in three parts according to the refrigerant quantity determined in advance, namely a+b+c. All three parts can be directly charged with refrigerant.

[0143] There is no need to perform a vacuum operation when installing the air conditioner. After connecting the indoor unit 10, the first connecting pipe 30, the second connecting pipe 40 and the outdoor unit 20 with a wrench, use the inner hexagon socket to open the valves of all two-way valves and three-way valves to connect the indoor and outdoor units of the air conditioner.

[0144] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An indoor unit of an air conditioner, characterized in that: The indoor unit comprises: a first refrigerant charging device, disposed at a first refrigerant inlet and outlet of the indoor unit, and configured to charge refrigerant into the indoor unit; Also includes: a first control device, disposed at the second refrigerant inlet and outlet of the indoor unit, configured to control the on / off of the second refrigerant inlet and outlet; When assembling the air conditioner, refrigerant is charged into the first refrigerant inlet and outlet of the indoor unit through the first refrigerant charging device to discharge the air in the indoor unit; The method of filling the first refrigerant inlet and outlet of the indoor unit with refrigerant by the first refrigerant filling device further comprises: controlling the first control device to be closed; The air conditioner includes an outdoor unit, a first connecting pipe, an indoor unit, and a second connecting pipe connected to form a refrigerant flow path, and the air conditioner also includes: a second refrigerant filling device, disposed at one end of the first connecting pipe and configured to fill the first connecting pipe with refrigerant; a second control device, disposed at the other end of the first connection pipe, configured to control the on / off state of the first connection pipe; wherein one of the second refrigerant charging device and the second control device is connected to the first refrigerant charging device, and the other of the second refrigerant charging device and the second control device is connected to the third refrigerant inlet and outlet of the outdoor unit; When assembling the air conditioner, refrigerant is charged into the first connecting pipe through the second refrigerant charging device to discharge the air in the first connecting pipe and control the second control device to be closed.

2. The indoor unit according to claim 1, characterized in that: The first refrigerant filling device includes a quick connector, a three-way valve, a two-way valve or a one-way valve.

3. An air conditioner, characterized in that: include: Outdoor unit; First online tube; Second online tube; and The indoor unit of the air conditioner according to claim 1 or 2; The outdoor unit, the first connecting pipe, the indoor unit and the second connecting pipe are connected to form a refrigerant flow path.

4. The air conditioner according to claim 3, characterized in that Also includes: a second refrigerant filling device, disposed at one end of the first connecting pipe and configured to fill the first connecting pipe with refrigerant; a second control device, disposed at the other end of the first connection pipe, configured to control the on / off state of the first connection pipe; Among them, one of the second refrigerant filling device and the second control device is connected to the first refrigerant filling device, and the other of the second refrigerant filling device and the second control device is connected to the third refrigerant inlet and outlet of the outdoor unit.

5. The air conditioner according to claim 3 or 4, characterized in that: Also includes: a third refrigerant charging device, disposed at one end of the second connecting pipe and configured to charge the refrigerant into the second connecting pipe; a third control device, provided at the other end of the second connection pipe, configured to control the on and off of the second connection pipe; Among them, one of the third refrigerant filling device and the third control device is connected to the first control device, and the other of the third refrigerant filling device and the third control device is connected to the fourth refrigerant inlet and outlet of the outdoor unit.

6. A method for assembling an air conditioner according to any one of claims 3 to 5, characterized in that: include: Refrigerant is charged into the first refrigerant inlet and outlet of the indoor unit through the first refrigerant charging device to discharge the air in the indoor unit.

7. The assembly method according to claim 6, characterized in that: The method of filling the first refrigerant inlet and outlet of the indoor unit with refrigerant by the first refrigerant filling device further comprises: Control the first control device to close.

8. The assembly method according to claim 6 or 7, characterized in that: Also includes: Filling the first connecting pipe with refrigerant through the second refrigerant filling device to discharge the air in the first connecting pipe; Control the second control device to close.

9. The assembly method according to claim 6 or 7, characterized in that: Also includes: Filling the second connecting pipe with refrigerant through the third refrigerant filling device to discharge air in the second connecting pipe; Control the third control device to close.

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