Air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses an air conditioner. The air conditioner comprises a compressor, an outdoor heat exchanger and an indoor heat exchanger which are sequentially connected through pipelines, the pipelines comprise a connecting pipeline, and the connecting pipeline is connected between the indoor heat exchanger and the outdoor heat exchanger; the radiating pipeline is connected with the connecting pipeline in parallel; the radiator is arranged on the radiating pipeline and is used for radiating an electric control element of the air conditioner; the control piece is arranged on the heat dissipation pipeline and is used for controlling the on-off of the heat dissipation pipeline; the first throttling element is arranged on the connecting pipeline; the controller is connected with the first throttling element and used for controlling the opening degree of the first throttling element according to the parameters of the air conditioner, a first one-way throttling valve and a second one-way throttling valve in the related technology do not need to be arranged, the number of parts of the air conditioner is reduced, and the control logic of the air conditioner is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioner. BACKGROUND

[0002] At present, the heat dissipation mode of the electric control components of the air conditioner is air cooling heat dissipation. External air is introduced into the electric control box by the fan, and heat is taken away by the air flow. This method is simple and easy to implement, but the effect is greatly affected by the ambient temperature, and the heat dissipation effect is limited in a high-temperature environment.

[0003] Therefore, the related technology provides an air conditioner, which comprises a compressor, the compressor having an exhaust port and a return port; a reversing assembly, the reversing assembly comprising first to fourth ports, the first port being in communication with one of the second port and the third port, the fourth port being in communication with the other one of the second port and the third port, the first port being connected with the exhaust port, and the fourth port being connected with the return port; an outdoor heat exchanger and an indoor heat exchanger, a first end of the outdoor heat exchanger being connected with the second port, and a first end of the indoor heat exchanger being connected with the third port; a first one-way throttle valve, the first one-way throttle valve comprising a first valve port and a second valve port, the first valve port being connected with a second end of the outdoor heat exchanger, the first one-way throttle valve being completely conductive in a flow direction from the first valve port to the second valve port, and the first one-way throttle valve being a throttling component in a flow direction from the second valve port to the first valve port; a second one-way throttle valve, the second one-way throttle valve comprising a third valve port and a fourth valve port, the third valve port being connected with a second end of the indoor heat exchanger, the second one-way throttle valve being completely conductive in a flow direction from the third valve port to the fourth valve port, and the second one-way throttle valve being a throttling component in a flow direction from the fourth valve port to the third valve port; a first refrigerant flow path and a second refrigerant flow path connected in parallel, the first refrigerant flow path and the second refrigerant flow path being connected in series between the second valve port and the fourth valve port, a first control valve for controlling the refrigerant flow of the first refrigerant flow path being connected in series on the first refrigerant flow path, and a second control valve for controlling the refrigerant flow of the second refrigerant flow path being connected in series on the second refrigerant flow path; and an electric control heat sink assembly, the electric control heat sink assembly comprising an electric control element and a heat dissipation assembly for dissipating heat of the electric control element, the heat dissipation assembly being connected in series on the first refrigerant flow path.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, the refrigerant is used to dissipate heat of the electric control element, but the first one-way throttle valve and the second one-way throttle valve need to be arranged, resulting in more components of the air conditioner, high cost, and complex control logic.

[0006] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] The following presents a simplified summary of some aspects of the disclosed embodiments in order to provide a basic understanding of such embodiments. This summary is not an extensive overview of the embodiments described in this disclosure, and is intended neither to identify key / critical elements of these embodiments nor to delineate the scope of the embodiments. Its sole purpose is to present some aspects of these embodiments in a simplified form as a prelude to the more detailed description that is presented later.

[0008] Embodiments of the present disclosure provide an air conditioner to solve the problem that in the related art, a first one-way throttle valve and a second one-way throttle valve need to be arranged, resulting in more air conditioner parts, high cost, and complex control logic.

[0009] According to a first aspect of the embodiments of the present disclosure, an air conditioner is provided, comprising: a compressor, an outdoor heat exchanger, and an indoor heat exchanger connected in sequence through a pipeline, the pipeline comprising a connecting pipeline connected between the indoor heat exchanger and the outdoor heat exchanger; a heat dissipation pipeline connected in parallel with the connecting pipeline; a heat sink provided in the heat dissipation pipeline and used for dissipating heat for an electric control element of the air conditioner; a control member provided in the heat dissipation pipeline and used for controlling the on-off of the heat dissipation pipeline; a first throttling element provided in the connecting pipeline; and a controller connected with the first throttling element and used for controlling the opening degree of the first throttling element according to parameters of the air conditioner.

[0010] The refrigerant flows through the heat sink, and the heat sink exchanges heat with the electric control element to dissipate heat for the electric control element.

[0011] The first throttling element is provided in the connecting pipeline, and the opening degree of the first throttling element is controlled according to the parameters of the air conditioner, so as to adjust the opening degree of the first throttling element and realize normal working of the air conditioner. In other words, the first throttling element, through adjustment of the opening degree thereof, not only has the function of controlling the on-off of the connecting pipeline, but also can realize throttling of the refrigerant flowing through the connecting pipeline, so that the first one-way throttle valve and the second one-way throttle valve in the related art do not need to be arranged, the number of air conditioner parts is reduced, and the control logic of the air conditioner is simplified.

[0012] Optionally, the controller is connected with the control member and used for controlling the control member to be closed in a heating mode, so as to disconnect the heat dissipation pipeline.

[0013] The air conditioner further comprises a reversing valve, which can be a combination of multiple valves or a four-way valve. Taking the four-way valve as an example, the four-way valve comprises a first connecting port to a fourth connecting port, the exhaust port of the compressor is in communication with the first connecting port, the second connecting port is in communication with one end of the outdoor heat exchanger, the third connecting port is in communication with one end of the indoor heat exchanger, the fourth connecting port is in communication with the gas inlet of the compressor, and the other end of the outdoor heat exchanger and the other end of the indoor heat exchanger are in communication through the connecting pipeline.

[0014] In the heating mode, the refrigerant flows through the exhaust port of the compressor, the first connecting port, the third connecting port, and then flows into the indoor heat exchanger. The control member controls the heat dissipation pipeline to be disconnected. The refrigerant flowing out of the indoor heat exchanger flows into the outdoor heat exchanger through the connecting pipeline, and then flows back to the gas inlet of the compressor through the outdoor heat exchanger, the second connecting port and the fourth connecting port.

[0015] In the heating mode, the refrigerant does not flow through the heat dissipation pipeline, and thus does not flow through the radiator. In this way, the temperature of the electric control element after heat exchange with the radiator can be prevented from being too low due to the refrigerant flowing out of the indoor heat exchanger. The temperature of the electric control element being too low can cause the electric control element to produce condensation water, which can affect the operation reliability and safety of the electric control element. Therefore, the application can prevent the surface of the electric control element from producing condensation water, and can improve the stability and reliability of the electric control element.

[0016] Optionally, the controller is connected with the control member, and is configured to control the control member to be opened in the refrigeration mode and / or the dehumidification mode, so that the heat dissipation pipeline is turned on.

[0017] In the refrigeration mode and / or the dehumidification mode, the refrigerant flows through the exhaust port of the compressor, the first connecting port and the second connecting port, and then flows into the outdoor heat exchanger. The refrigerant flowing out of the outdoor heat exchanger flows into the heat dissipation pipeline. Under the action of the control member, the heat dissipation pipeline is in an on state. The radiator exchanges heat with the electric control element to dissipate heat for the electric control element. The refrigerant flowing out of the radiator flows back to the gas inlet of the compressor through the indoor heat exchanger, the third connecting port and the fourth connecting port. In the application, the compressor does not need to be reduced in frequency, so that the process of cooling the electric control element does not affect the normal operation of the air conditioner.

[0018] Optionally, the control member includes a second throttling element.

[0019] By controlling the opening degree of the second throttling element, the amount of refrigerant flowing through the heat dissipation pipeline can be adjusted, so that the temperature of the electric control element can be adjusted, and the temperature control of the electric control element can be more accurate.

[0020] Optionally, the second throttling element includes a first electronic expansion valve.

[0021] The second throttling element adopts the form of an electronic expansion valve, which can improve the intelligent degree of the air conditioner and realize intelligent control of the air conditioner.

[0022] Optionally, the controller is connected with the second throttling element, and is configured to control the opening degree of the second throttling element according to the parameters of the electric control unit.

[0023] Optionally, the control member includes a one-way valve. The on direction of the one-way valve is the direction from the outdoor heat exchanger to the indoor heat exchanger in the refrigeration mode and / or the dehumidification mode.

[0024] Optionally, the control member includes an electromagnetic valve.

[0025] Optionally, the controller is connected with the electromagnetic valve, and is used for controlling the opening degree of the second throttling element according to parameters of the electronic control unit.

[0026] Optionally, the first throttling element comprises a second electronic expansion valve.

[0027] The foregoing general description and the following description are merely exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and are not intended to be limiting of the embodiments, in which like reference numerals refer to like elements in the various figures and in which:

[0029] Figure 1 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure, wherein the arrow direction schematically shows the refrigerant flow direction when cooling;

[0030] Figure 2 is a structural schematic diagram of another air conditioner provided by an embodiment of the present disclosure, wherein the arrow direction schematically shows the refrigerant flow direction when heating.

[0031] LIST OF REFERENCE NUMERALS

[0032] 10: outdoor heat exchanger; 101: first throttling element; 102: radiator; 103: control member; 105: radiating pipeline; 106: connecting pipeline; 107: first connecting pipe; 108: second connecting pipe; 111: electronic control element;

[0033] 20: indoor heat exchanger;

[0034] 30: compressor;

[0035] 40: reversing valve; 401: first connecting port; 402: second connecting port; 403: third connecting port; 404: fourth connecting port. DETAILED DESCRIPTION

[0036] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are used only for reference and are not intended to limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0037] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0038] In the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present disclosure and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present disclosure can be understood according to the specific circumstances.

[0039] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0040] Unless otherwise specified, the term "a plurality of" means two or more.

[0041] In the present disclosure, the character " / " represents a "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0042] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0043] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0044] In combination Figure 1 And Figure 2 As shown in the drawings, the present disclosure provides an air conditioner.

[0045] The air conditioner comprises a compressor 30, an outdoor heat exchanger 10 and an indoor heat exchanger 20 connected in sequence through a pipeline, and further comprises a heat dissipation pipeline 105, a heat sink 102, a control member 103, a first throttling element 101 and a controller.

[0046] The pipeline comprises a connecting pipeline 106 connected between the indoor heat exchanger 20 and the outdoor heat exchanger 10.

[0047] The heat dissipation pipeline 105 is connected in parallel with the connecting pipeline 106.

[0048] The heat sink 102 is arranged in the heat dissipation pipeline 105 and used for dissipating heat of an electric control element 111 of the air conditioner.

[0049] The control member 103 is arranged in the heat dissipation pipeline 105 and used for controlling on-off of the heat dissipation pipeline 105.

[0050] The first throttling element 101 is arranged in the connecting pipeline 106.

[0051] The controller is connected with the first throttling element 101 and used for controlling an opening degree of the first throttling element 101 according to parameters of the air conditioner.

[0052] The refrigerant flows through the heat sink 102, the heat sink 102 exchanges heat with the electric control element 111 to dissipate heat for the electric control element 111.

[0053] The first throttling element 101 is arranged in the connecting pipeline 106 and the opening degree of the first throttling element 101 is controlled according to the parameters of the air conditioner, so that the opening degree of the first throttling element 101 is adjusted and normal work of the air conditioner is realized. In other words, the first throttling element 101 realizes the throttling function of the refrigerant flowing through the connecting pipeline 106 by adjusting the opening degree of the first throttling element 101, so that the first one-way throttling valve and the second one-way throttling valve in the related art do not need to be arranged, the number of parts of the air conditioner is reduced, and the control logic of the air conditioner is simplified.

[0054] Optionally, the controller is connected with the control member 103 and used for controlling the control member 103 to be closed in a heating mode, so that the heat dissipation pipeline 105 is disconnected.

[0055] The air conditioner further comprises a reversing valve 40, which can be a combination of multiple valves or a four-way valve. Taking the four-way valve as an example, the four-way valve comprises first to fourth connecting ports 401 to 404, an exhaust port of the compressor 30 is connected with the first connecting port 401, the second connecting port 402 is connected with one end of the outdoor heat exchanger 10, the third connecting port 403 is connected with one end of the indoor heat exchanger 20, the fourth connecting port 404 is connected with a return port of the compressor 30, and the other end of the outdoor heat exchanger 10 and the other end of the indoor heat exchanger 20 are connected through the connecting pipeline 106.

[0056] like Figure 2 As shown, in heating mode, the refrigerant flows sequentially through the exhaust port of the compressor 30, through the first connection port 401 and the third connection port 403 into the indoor heat exchanger 20. The control unit 103 controls the heat dissipation pipe 105 to disconnect. The refrigerant flowing out of the indoor heat exchanger 20 flows into the outdoor heat exchanger 10 through the connection pipe 106, and then flows back to the return port of the compressor 30 through the outdoor heat exchanger 10, the second connection port 402 and the fourth connection port 404.

[0057] In heating mode, the refrigerant does not flow through the heat dissipation pipe 105, and therefore does not flow through the radiator 102. This avoids the refrigerant flowing out of the indoor heat exchanger 20 being too cold, which would cause the temperature of the electronic control component 111 after heat exchange with the radiator 102 to be too low. If the temperature of the electronic control component 111 is too low, condensation will form on the electronic control component 111, which would affect the operational reliability and safety of the electronic control component 111. Therefore, this application can avoid the formation of condensation on the surface of the electronic control component 111, and can improve the stability and reliability of the operation of the electronic control component 111.

[0058] Optionally, the controller is connected to the control unit 103 and is used to control the control unit 103 to turn on in cooling mode and / or dehumidification mode so as to make the heat dissipation pipe 105 conductive.

[0059] like Figure 1 As shown, in cooling mode and / or dehumidification mode, the refrigerant flows sequentially through the exhaust port of the compressor 30, through the first connection port 401 and the second connection port 402, into the outdoor heat exchanger 10. The refrigerant flowing out of the outdoor heat exchanger 10 flows into the heat dissipation pipe 105. Under the action of the control component 103, the heat dissipation pipe 105 is in a conductive state, and the radiator 102 exchanges heat with the electronic control component 111, dissipating heat for the electronic control component 111. The refrigerant flowing out of the radiator 102 flows back to the return port of the compressor 30 through the indoor heat exchanger 20, the third connection port 403, and the fourth connection port 404. In this application, it is not necessary to use the compressor 30 frequency reduction method, so the process of cooling the electronic control component 111 will not affect the normal operation of the air conditioner.

[0060] Optionally, the control element 103 includes a second throttling element.

[0061] By controlling the opening of the second throttling element, the amount of refrigerant passing through the heat dissipation pipe 105 can be adjusted, thereby regulating the temperature of the electronic control element 111 and making the temperature control of the electronic control element 111 more precise.

[0062] Optionally, the second throttling element includes a first electronic expansion valve.

[0063] The second throttling element adopts the form of an electronic expansion valve, which can improve the intelligence level of the air conditioner and realize intelligent control of the air conditioner.

[0064] Optionally, the controller is connected to the second throttling element and is used to control the opening degree of the second throttling element according to the parameters of the electronic control unit.

[0065] The parameters of the electronic control element 111 can be the temperature of the electronic control element 111 or other parameters that can reflect the temperature of the electronic control unit.

[0066] The control logic for the second throttling element is as follows:

[0067] Reset Action: After power-on, the second throttling element performs a reset action, first opening N1 steps (e.g., 480 steps), then closing N2 steps (e.g., 540 steps), and then opening back to the initial opening degree L. Here, N1 is less than N2. Opening N1 steps first prevents the second throttling element from jamming, and closing N2 steps ensures that the second throttling element is completely closed.

[0068] After power-off, the second throttling element closes to its initial opening L.

[0069] Within the first preset time after startup, for example, 3 minutes, the second throttling element remains fully open to reduce the starting load and starting current of the compressor 30; after the first preset time, the following logic applies.

[0070] Assume the target temperature of the electronic control component 111 is T. 电控 The calculation cycle is controlled to be T1, for example, T1 = 10s;

[0071] The operating degree of the second throttling element per cycle = Kp * ΔT n +Ki*(△T n -△T n-1 );

[0072] △T n =T n -T electronic control, T n Let ΔT be the temperature of the electronic control element 111 in the nth cycle. n The temperature deviation between the temperature of the electronic control element 111 in the nth cycle and the target temperature;

[0073] △T n-1 =T n-1 -T electronic control, T n-1 The temperature of the electronic control element 111 in the (n-1)th cycle is ΔT. n-1 The temperature deviation between the temperature of the electronic control element 111 in the (n-1)th cycle and the target temperature;

[0074] The value of Kp ranges from 1 to 10, for example, 1, 5, 7, 10; the value of Ki ranges from less than or equal to 1, for example, 0.4, 0.7 or 1.

[0075] Optionally, the control member 103 comprises a one-way valve, wherein the one-way valve is open in the direction from the outdoor heat exchanger 10 to the indoor heat exchanger 20 in the cooling mode and / or the dehumidification mode.

[0076] The one-way valve is a valve that allows flow in only one direction, and the one-way valve is arranged to prevent the refrigerant from flowing in the reverse direction, and can be used to control the flow direction of the refrigerant. In the cooling mode and / or the dehumidification mode, the one-way valve is open, the heat dissipation pipeline 105 is open, and the refrigerant flowing out of the outdoor heat exchanger 10 flows through the radiator 102, the one-way valve, and into the indoor heat exchanger 20; in the heating mode, the one-way valve is closed, the heat dissipation pipeline 105 is disconnected, and the refrigerant cannot flow through the one-way valve.

[0077] The one-way valve can achieve closing or opening of the heat dissipation pipeline 105 by its own properties, without the need for a controller to control, thereby simplifying the structure of the air conditioner.

[0078] Optionally, the control member 103 comprises an electromagnetic valve.

[0079] The electromagnetic valve is connected to the controller, and in the cooling mode and / or the dehumidification mode, the controller controls the electromagnetic valve to be in an open state, and in the heating mode, the controller controls the electromagnetic valve to be in a closed state.

[0080] Furthermore, when the control member 103 is an electromagnetic valve, the controller is connected to the electromagnetic valve, and is used to control the opening degree of the second throttling element according to the parameters of the electronic control unit, so that the on-off of the electromagnetic valve can be controlled according to the heat dissipation demand of the electronic control element 111.

[0081] In the cooling mode, the electromagnetic valve is controlled to be open when the electronic control element 111 needs to be cooled, and the electromagnetic valve is controlled to be closed when the electronic control element 111 does not need to be cooled, thereby further improving the intelligent degree of control of the air conditioner.

[0082] Optionally, the first throttling element 101 comprises a second electronic expansion valve.

[0083] The second electronic expansion valve is used to throttle the refrigerant flowing through the connecting pipeline 106, so that the air conditioner can meet the needs of the indoor user.

[0084] The air conditioner further comprises a first connecting pipeline 107 and a second connecting pipeline 108, the first connecting pipeline 107 is connected between the outdoor heat exchanger 10 and the connecting pipeline 106, and the second connecting pipeline 108 is connected between the indoor heat exchanger 20 and the connecting pipeline 106. Since the first throttling element 101 can throttle the refrigerant flowing through the connecting pipeline 106, no throttling element needs to be arranged on the first connecting pipeline 107 and the second connecting pipeline 108, thereby simplifying the structure of the air conditioner and simplifying the control logic of the air conditioner.

[0085] The opening degree of the first throttling element 101 is controlled according to a parameter of the air conditioner, which can be the temperature of the coil of the indoor heat exchanger 20 or a target temperature set by a user.

[0086] Within a second preset time, for example, 3 minutes, after the air conditioner is started, the opening degree of the first throttling element 101 is fully open or not fully open; after the second preset time, the opening degree of the first throttling element 101 is controlled according to PID (Proportional Integral Derivative).

[0087] The second preset time can be the same as the first preset time or different from the first preset time.

[0088] Optionally, the electric control element 111 is arranged outdoors, and the heat sink 102 is arranged corresponding to the electric control element 111 to dissipate heat for the electric control element 111.

[0089] The heat sink 102 is provided with a flow passage for the refrigerant, and the refrigerant flow passage is connected in series with the heat dissipation passage 105. The heat sink 102 is further provided with a fin structure on the surface. The air conditioner comprises an outdoor unit, and the outdoor unit is provided with a fan corresponding to the outdoor heat exchanger 10, which is used to drive air to flow through the outdoor heat exchanger 10 to exchange heat with the outdoor heat exchanger 10. The air driven by the fan can also flow through the fin structure to cool the heat sink 102, thereby cooling the electric control element 111.

[0090] In the heating mode, the refrigerant does not flow through the heat dissipation passage 105, and the fan is used to cool the electric control element 111.

[0091] The above description and drawings fully illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations can be changed. Some parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises: a compressor, an outdoor heat exchanger, and an indoor heat exchanger connected in sequence through pipelines, wherein the pipelines comprise a connecting pipeline connected between the indoor heat exchanger and the outdoor heat exchanger; a heat dissipation pipeline connected in parallel with the connecting pipeline; a heat sink provided in the heat dissipation pipeline and used for dissipating heat from an electric control element of the air conditioner; a control member provided in the heat dissipation pipeline and used for controlling the on-off of the heat dissipation pipeline; a first throttling element provided in the connecting pipeline; a controller connected with the first throttling element and used for controlling the opening degree of the first throttling element according to parameters of the air conditioner.

2. The air conditioner according to claim 1, wherein the controller is connected with the control member and used for controlling the control member to be closed in a heating mode so as to disconnect the heat dissipation pipeline.

3. The air conditioner according to claim 1, wherein the controller is connected with the control member and used for controlling the control member to be opened in a cooling mode and / or a dehumidifying mode so as to connect the heat dissipation pipeline.

4. The air conditioner according to any one of claims 1 to 3, wherein the control member comprises a second throttling element.

5. The air conditioner according to claim 4, wherein the second throttling element comprises a first electronic expansion valve.

6. The air conditioner according to claim 4, wherein the controller is connected with the second throttling element and used for controlling the opening degree of the second throttling element according to parameters of an electric control unit.

7. The air conditioner according to any one of claims 1 to 3, wherein the control member comprises a one-way valve, and the one-way valve is connected in a direction from the outdoor heat exchanger to the indoor heat exchanger in the cooling mode and / or the dehumidifying mode.

8. The air conditioner according to any one of claims 1 to 3, wherein the control member comprises an electromagnetic valve.

9. The air conditioner according to claim 8, wherein the controller is connected with the electromagnetic valve and used for controlling the opening degree of the second throttling element according to parameters of an electric control unit.

10. The air conditioner according to any one of claims 1 to 3, wherein the first throttling element comprises a second electronic expansion valve.

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