Heat exchange system, air conditioner, control method of air conditioner and storage medium

Abstract

The invention discloses a heat exchange system, an air conditioner, a control method of the air conditioner and a storage medium, and relates to the technical field of air treatment equipment, and the heat exchange system comprises a compressor, a first heat exchange assembly, a second heat exchange assembly, a third heat exchange assembly, a first switching device and a second switching device. According to the technical scheme, the first switching device and the second switching device are arranged to communicate with the exhaust port of the compressor, one of the second heat exchange assembly and the third heat exchange assembly is controlled to condense and release heat, and the other one of the second heat exchange assembly and the third heat exchange assembly is controlled to evaporate and absorb heat; the working state of the second heat exchange assembly and the working state of the third heat exchange assembly can be switched between condensation heat release and evaporation heat absorption, so that the second heat exchange assembly and the third heat exchange assembly can alternately work between condensation heat release and evaporation heat absorption, and indoor uninterrupted heating is achieved while outdoor heating and defrosting are achieved.

Description

Technical Field

[0001] This invention relates to the field of air handling equipment technology, and in particular to a heat exchange system, an air conditioner, a control method thereof, and a storage medium thereof. Background Technology

[0002] As living standards improve, inverter heat pump air conditioners will be more widely used in people's lives. In cold winters, when outdoor temperatures are low, frost easily forms on the surface of the outdoor heat exchanger in the heat exchange system. Once frost forms on the surface of the heat exchanger, heat exchange with the outside environment will be significantly affected, leading to a rapid decline in heat pump performance. In existing technology, the common method for defrosting air conditioners during heating is to switch the air conditioner to cooling mode, stopping the indoor cross-flow fan. During defrosting, no heat can be output to the indoor environment, and the indoor cooling operation also causes a drop in indoor temperature, resulting in a poor user experience. Summary of the Invention

[0003] The main objective of this invention is to propose a heat exchange system, an air conditioner, a control method thereof, and a storage medium, aiming to solve the problem of poor user experience caused by the need to stop heating during defrosting.

[0004] To achieve the above objectives, the present invention proposes a heat exchange system comprising a compressor, a first heat exchange component, a second heat exchange component, a third heat exchange component, a first switching device, and a second switching device.

[0005] The compressor has an exhaust port and an exhaust port;

[0006] The first switching device is connected to the exhaust port, the first end of the second heat exchange component, and the first end of the third heat exchange component, respectively;

[0007] The second switching device is connected to the exhaust port, the first end of the first heat exchange component, and the return port; the second end of the first heat exchange component, the second end of the second heat exchange component, and the second end of the third heat exchange component are connected to each other;

[0008] The first switching device and the second switching device are interconnected;

[0009] The first switching device and the second switching device are used to control three of the first heat exchange component, the second heat exchange component and the third heat exchange component, so that the heat exchange system forms at least a first working mode. In the first working mode, the first heat exchange component condenses and releases heat, one of the second heat exchange component and the third heat exchange component condenses and releases heat, and the other evaporates and absorbs heat.

[0010] In one embodiment, the first switching device and the second switching device are used to control the refrigerant discharged by the compressor to be split into two paths;

[0011] One refrigerant stream flows sequentially through the first heat exchange component and the third heat exchange component before returning to the compressor; the other refrigerant stream flows sequentially through the second heat exchange component and the third heat exchange component before returning to the compressor.

[0012] Alternatively, one refrigerant stream flows sequentially through the first heat exchange component and the second heat exchange component before returning to the compressor, while another refrigerant stream flows sequentially through the third heat exchange component and the second heat exchange component before returning to the compressor.

[0013] In one embodiment, the valve ports of the first switching device include a first valve port, a second valve port, a third valve port, and a fourth valve port; the first valve port is used to communicate with the exhaust port, the second valve port is used to communicate with a first end of the second heat exchange component, and the fourth valve port is used to communicate with a first end of the third heat exchange component; the first switching device has a first valve position, a second valve position, and a third valve position.

[0014] The first valve port corresponding to the first valve position is connected to the fourth valve port, and the second valve port is connected to the third valve port;

[0015] The second valve port, the third valve port, and the fourth valve port corresponding to the second valve position are all blocked from the first valve port, and the second valve port, the third valve port, and the fourth valve port are interconnected.

[0016] The first valve port corresponding to the third position is connected to the fourth valve port, and the second valve port is connected to the third valve port;

[0017] The second switching device is provided with a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port. The fifth valve port is connected to the exhaust port, the sixth valve port is connected to the third valve port, the seventh valve port is connected to the return gas port, and the eighth valve port is connected to the first end of the first heat exchange component.

[0018] The second switching device has a fourth valve position and a fifth valve position. The fourth valve position corresponds to the fifth valve port being connected to the sixth valve port, and the seventh valve port being connected to the eighth valve port. The fifth valve position corresponds to the fifth valve port being connected to the eighth valve port, and the seventh valve port being connected to the sixth valve port.

[0019] In the first operating mode, the second switching device is in the fifth valve position, the first switching device is in the first valve position, or the first switching device is in the third valve position.

[0020] In one embodiment, the first switching device and the second switching device are used to control three of the first heat exchange component, the second heat exchange component and the third heat exchange component, so that the heat exchange system can also form a second operating mode and / or a third operating mode.

[0021] In the second working mode, the first switching device is in the second valve position and the second switching device is in the fifth valve position, so that the first heat exchange component condenses and releases heat, and the second heat exchange component and the third heat exchange component evaporate and absorb heat.

[0022] And / or, the heat exchange system has a third operating mode, in which the first switching device is in the second valve position and the second switching device is in the fourth valve position, so that the first heat exchange component evaporates and absorbs heat, and the second heat exchange component and the third heat exchange component condense and release heat.

[0023] In one embodiment, the first switching device is a four-way multi-position directional valve, which includes a valve body and a valve core.

[0024] The valve body has a receiving cavity and a first valve port, a second valve port, a third valve port and a fourth valve port communicating with the receiving cavity;

[0025] The valve core is rotatably disposed within the accommodating cavity, and the valve core divides the accommodating cavity into a first cavity and a second cavity that are independent of each other; the valve core is slidably connected to the surface of the valve seat, so that at most three of the first valve port, the second valve port, the third valve port and the fourth valve port are simultaneously connected to the first cavity, or at most three of the first valve port, the second valve port, the third valve port and the fourth valve port are simultaneously connected to the second cavity.

[0026] In one embodiment, the valve body includes a housing, a valve seat, and four connecting pipes. The valve seat and the housing enclose the receiving cavity. The first valve port, the second valve port, the third valve port, and the fourth valve port are disposed on the valve seat, and the four connecting pipes are respectively disposed on the valve seat corresponding to the first valve port, the second valve port, the third valve port, and the fourth valve port.

[0027] In one embodiment, the valve core includes a drive assembly and a partition assembly, the drive assembly being used to drive the partition assembly, the partition assembly being slidably connected to the surface of the valve seat, and the partition assembly dividing the accommodating cavity into a first cavity and a second cavity.

[0028] In one embodiment, the separating component includes a separator and a connector, one end of the connector being connected to the separator and the other end being connected to the drive component; the separator has an opening, the edge of which is slidably connected to the inner wall of the valve seat, and the first valve port, the second valve port, the third valve port, and the fourth valve port are arranged in a ring-shaped interval around the rotation axis of the valve core.

[0029] In one embodiment, the heat exchange system includes a first flow regulating component, which is disposed in the flow path between the second heat exchange component and the first heat exchange component;

[0030] And / or, the heat exchange system includes a second flow regulating component, which is disposed in the flow path between the third heat exchange component and the first heat exchange component.

[0031] In one embodiment, the first flow regulating component is one or more of an electronic expansion valve, a throttling capillary, or a throttling short tube;

[0032] And / or, the second flow regulating component is one or more of an electronic expansion valve, a throttling capillary, or a throttling short tube.

[0033] The present invention provides an air conditioner that includes the heat exchange system described in any of the foregoing embodiments.

[0034] This invention provides a control method for an air conditioner, the air conditioner comprising a compressor, a first heat exchange component, a second heat exchange component, a third heat exchange component, a first switching device, and a second switching device; the compressor has an exhaust port and a return port; the first switching device is connected to the exhaust port, a first end of the second heat exchange component, and a first end of the third heat exchange component; the second switching device is connected to the exhaust port, a first end of the first heat exchange component, and the return port; the second ends of the first heat exchange component, the second end of the second heat exchange component, and the second end of the third heat exchange component are interconnected; the first switching device and the second switching device are interconnected; the control method for the air conditioner includes the following steps:

[0035] When the air conditioner is operating in the target working mode, the first switching device and the second switching device are controlled to operate at the target valve position corresponding to the target working mode, so that the first heat exchange component, the second heat exchange component and the third heat exchange component reach the target heat exchange state corresponding to the target working mode.

[0036] In one embodiment, the step of controlling the first switching device and the second switching device to operate at the target position corresponding to the target operating mode, so that the first heat exchange component, the second heat exchange component and the third heat exchange component reach the target heat exchange state corresponding to the target operating mode, includes:

[0037] When the target operating mode is the first operating mode, the first switching device is controlled to operate at the first valve position, or the first switching device is controlled to operate at the third valve position; the second switching device operates at the fifth valve position.

[0038] When the target working mode is the second working mode, the first switching device is controlled to operate at the second valve position, and the second switching device is controlled to be in the fifth valve position;

[0039] When the target operating mode is the third operating mode, the first switching device is controlled to operate at the second valve position, and the second switching device is controlled to operate at the fourth valve position.

[0040] In addition, to achieve the above objectives, this application also proposes a storage medium storing a control program for an air conditioner, which, when executed by a processor, implements the steps of the control method for the air conditioner as described in any of the preceding claims.

[0041] The technical effects of the technical solution provided by this invention are as follows: The technical solution of this invention connects a first switching device and a second switching device to the exhaust port of the compressor, and controls one of the second heat exchange component and the third heat exchange component to condense and release heat, while the other evaporates and absorbs heat. Through the control of the first and second switching devices, the operating states of the second and third heat exchange components can switch between condensation and heat release or evaporation and heat absorption. This allows the second and third heat exchange components to alternate between condensation and heat release or evaporation and heat absorption, thereby achieving uninterrupted indoor heating while simultaneously providing outdoor heating and defrosting. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of a structure of an embodiment of the heat exchange system provided by the present invention;

[0044] Figure 2 for Figure 1A schematic diagram of the structure of one embodiment of the first switching device;

[0045] Figure 3 A schematic diagram of a refrigerant flow direction in an embodiment of a heat exchange system in its first operating mode;

[0046] Figure 4 for Figure 3 A schematic diagram showing the valve port connection state of the first switching device in the first valve position;

[0047] Figure 5 A schematic diagram of the refrigerant flow in another embodiment of the heat exchange system in its first operating mode;

[0048] Figure 6 for Figure 5 A schematic diagram showing the valve port connection state of the first switching device in the third valve position;

[0049] Figure 7 A schematic diagram of the refrigerant flow direction in an embodiment of a heat exchange system in its second operating mode;

[0050] Figure 8 for Figure 7 A schematic diagram showing the valve port connection state of the first switching device in the second valve position;

[0051] Figure 9 A schematic diagram of a refrigerant flow direction in an embodiment of a heat exchange system in its third operating mode;

[0052] Figure 10 for Figure 9 A schematic diagram showing the valve port connection state of the first switching device in the second valve position;

[0053] Figure 11 This is a schematic diagram of another embodiment of the heat exchange system provided by the present invention;

[0054] Explanation of icon numbers:

[0055] 10. Heat exchange system;

[0056] 100. Compressor; 101. Exhaust port; 102. Return port;

[0057] 200. First heat exchange component;

[0058] 300. Second heat exchange component;

[0059] 400. Third heat exchange component;

[0060] 500, First switching device; J, First valve port; K, Second valve port; L, Third valve port; M, Fourth valve port;

[0061] 501, receiving cavity; 501a, first cavity; 501b, second cavity;

[0062] 510. Valve body; 511. Housing; 512. Valve seat; 513. Connecting pipe;

[0063] 520. Valve core; 521. Drive assembly; 522. Separator assembly; 522a. Separator; 522b. Connector;

[0064] 600. Second switching device; D. Fifth valve port; C. Sixth valve port; S. Seventh valve port; E. Eighth valve port;

[0065] 700. First flow regulation component;

[0066] 800. Second flow regulation component;

[0067] 900, Third Flow Regulation Component.

[0068] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0069] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0070] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0071] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" in the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0072] As living standards improve, inverter heat pump air conditioners will be more widely used in people's lives. In cold winters, when outdoor temperatures are low, frost easily forms on the surface of the outdoor heat exchanger in the heat exchange system. Once frost forms on the surface of the heat exchanger, heat exchange with the outside environment will be significantly affected, leading to a rapid decline in heat pump performance. In existing technology, the common method for defrosting air conditioners during heating is to switch the air conditioner to cooling mode, stopping the indoor cross-flow fan. During defrosting, no heat can be output to the indoor environment, and the indoor cooling operation also causes a drop in indoor temperature, resulting in a poor user experience.

[0073] This invention proposes a heat exchange system, an air conditioner, and a control method thereof, aiming to solve the problem of poor user experience caused by the need to stop heating during defrosting. For ease of understanding and explanation, details are attached to the specification of this invention. Figures 1 to 11 In the diagram, solid arrows indicate spaces, slots, or holes.

[0074] This invention provides an air conditioner. Air conditioners include, but are not limited to, wall-mounted air conditioners, portable air conditioners, window air conditioners, cabinet air conditioners, ceiling-mounted air conditioners, multi-split air conditioners, etc.

[0075] In this embodiment, please refer to Figure 1 and Figure 11 In one embodiment of the present invention, the air conditioner includes a compressor 100, a first heat exchange component 200, a second heat exchange component 300, a third heat exchange component 400, a first switching device 500, and a second switching device 600; the compressor 100 has an exhaust port and a return port; the first switching device 500 is connected to the exhaust port, the first end of the second heat exchange component 300, and the first end of the third heat exchange component 400 respectively; the second switching device 600 is connected to the exhaust port, the first end of the first heat exchange component 200, and the return port; the second end of the first heat exchange component 200 and the second heat exchange component 400 are connected to the second heat exchange component 500. The second end of component 300 and the second end of the third heat exchange component 400 are interconnected; the first switching device 500 and the second switching device 600 are interconnected, and the first switching device 500 and the second switching device 600 are used to control three of the first heat exchange component 200, the second heat exchange component 300 and the third heat exchange component 400, so that the heat exchange system 10 forms at least a first working mode. In the first working mode, the first heat exchange component 200 condenses and releases heat, and one of the second heat exchange component 300 and the third heat exchange component 400 condenses and releases heat, while the other evaporates and absorbs heat.

[0076] In this embodiment, the second heat exchange component 300 and the third heat exchange component 400 are both outdoor heat exchangers, and the first heat exchange component 200 is an indoor heat exchanger. The air conditioner also includes an outdoor unit housing and an outdoor fan. The second heat exchange component 300, the third heat exchange component 400, and the outdoor fan are all disposed within the outdoor unit housing. The outdoor fan supplies air to the second heat exchange component 300 and the third heat exchange component 400, and the number of outdoor fans can be one or two. In another embodiment, the second heat exchange component 300 and the third heat exchange component 400 are both indoor heat exchangers, and the first heat exchange component 200 is an outdoor heat exchanger. The air conditioner also includes an indoor unit housing and an indoor fan. The second heat exchange component 300, the third heat exchange component 400, and the indoor fan are all disposed within the indoor unit housing. The indoor fan supplies air to the second heat exchange component 300 and the third heat exchange component 400, and the number of indoor fans can be one or two.

[0077] The technical effects of the technical solution provided by the present invention are as follows: The technical solution of the present invention connects the first switching device 500 and the second switching device 600 to the exhaust port of the compressor 100, and controls one of the second heat exchange component 300 and the third heat exchange component 400 to condense and release heat, while the other evaporates and absorbs heat. Through the control of the first switching device 500 and the second switching device 600, the operating states of the second heat exchange component 300 and the third heat exchange component 400 can switch between condensation and heat release or evaporation and heat absorption. This allows the second heat exchange component 300 and the third heat exchange component 400 to alternate between condensation and heat release or evaporation and heat absorption, thereby achieving uninterrupted indoor heating while simultaneously providing outdoor heating and defrosting.

[0078] The air conditioner also includes a control device. The compressor 100, the first heat exchange component 200, the second heat exchange component 300, the third heat exchange component 400, the first switching device 500, and the second switching device 600 are all electrically connected to the control device. The control device can control the above components to operate in a preset manner.

[0079] Regarding the first heat exchange component 200, the second heat exchange component 300, and the third heat exchange component 400, in this embodiment, the first heat exchange component 200 is located indoors, while the second heat exchange component 300 and the third heat exchange component 400 are located outdoors, such as in a wall-mounted air conditioner or a floor-standing air conditioner. The second heat exchange component 300 and the third heat exchange component 400 can be integrated into one outdoor unit or located on two different outdoor units. In other embodiments, the first heat exchange component 200, the second heat exchange component 300, and the third heat exchange component 400 can all be located indoors, such as in a portable air conditioner.

[0080] Regarding the first switching device 500, in this embodiment, the first switching device 500 is a four-way multi-position directional valve, wherein the four-way multi-position directional valve has multiple valve ports, and the number of valve ports is greater than or equal to four. The multiple valve ports are divided into two groups, and the valve ports in each group are interconnected. The number of valve ports in each group is no more than three. In other embodiments, the first switching device 500 may also be a directional module formed by combining other valve bodies 510.

[0081] For example, please refer to Figures 1 to 3 The first switching device 500 has valve ports including a first valve port J, a second valve port K, a third valve port L, and a fourth valve port M; the first valve port J is used to communicate with the exhaust port, the second valve port K is connected to the first end of the second heat exchange component 300, and the fourth valve port M is connected to the first end of the third heat exchange component 400; the first switching device 500 has a first valve position, a second valve position, and a third valve position; the first valve port J corresponding to the first valve position is connected to the fourth valve port M, and the second valve port K is connected to the fourth valve port M; the second valve port K, the third valve port L, and the fourth valve port M corresponding to the second valve position are all blocked from the first valve port J, and the second valve port K, the third valve port L, and the fourth valve port M are connected to each other; the first valve port J corresponding to the third position is connected to the fourth valve port M, and the second valve port K is connected to the third valve port L. In other embodiments, the first valve port J, the third valve port L, and the fourth valve port M may all be blocked from the second valve port K, or the first valve port J, the second valve port K, and the third valve port L may all be blocked from the fourth valve port M, etc.

[0082] Please see Figure 2 In one embodiment, the first switching device 500 is a four-way multi-position directional valve, which includes a valve body 510 and a valve core 520. The valve body 510 has a receiving cavity 501 and a first valve port J, a second valve port K, a third valve port L, and a fourth valve port M communicating with the receiving cavity 501. The valve core 520 is rotatably disposed in the receiving cavity 501, and the valve core 520 divides the receiving cavity 501 into a first cavity 501a and a second cavity 501b that are independent of each other. The valve core 520 is slidably connected to the surface of the valve seat 512 so that the first switching device 500 has a first valve position, a second valve position, and a third valve position.

[0083] The valve core 520 divides the accommodating cavity 501 into two independent chambers, a first chamber 501a and a second chamber 501b. This means that the first chamber 501a and the second chamber 501b are isolated from each other, and refrigerant flow is not permitted between them. Of course, the first switching device 500 may have other valve positions besides the three mentioned above. These valve positions satisfy the condition that at most three of the following valve ports—the first valve port J, the second valve port K, the third valve port L, and the fourth valve port M—are simultaneously connected to the first chamber 501a, or that at most three of the following valve ports—the first valve port J, the second valve port K, the third valve port L, and the fourth valve port M—are simultaneously connected to the second chamber 501b.

[0084] For further information, please refer to [link / reference]. Figure 2 The valve body 510 includes a housing 511, a valve seat 512, and four connecting pipes 513. The valve seat 512 and the housing 511 enclose the accommodating cavity 501. The first valve port J, the second valve port K, the third valve port L, and the fourth valve port M are disposed on the valve seat 512. The four connecting pipes 513 are respectively disposed on the valve seat 512 corresponding to the first valve port J, the second valve port K, the third valve port L, and the fourth valve port M.

[0085] For example, the four connecting pipes 513 are designated as a first connecting pipe 513, a second connecting pipe 513, a third connecting pipe 513, and a fourth connecting pipe 513, which correspond to the first valve port J, the second valve port K, the third valve port L, and the fourth valve port M, respectively. The arrangement of the connecting pipes 513 facilitates the connection of the first switching device 500 to the heat exchange system 10.

[0086] In one embodiment, the valve core 520 includes a drive assembly 521 and a partition assembly 522. The drive assembly 521 drives the partition assembly 522, which is slidably connected to the surface of the valve seat 512. The partition assembly 522 divides the accommodating cavity 501 into a first cavity 501a and a second cavity 501b. The drive assembly 521 typically includes a motor, a motor mounting structure, and a transmission structure. The partition assembly 522 is connected to the output shaft of the motor. When the motor is turned on, the output shaft of the drive motor drives the partition assembly 522 to rotate and slide relative to the valve seat 512, thereby enabling the first switching device 500 to directly switch between a first valve position, a second valve position, and a third valve position.

[0087] The motor here can be a servo motor or a stepper motor, etc. The motor is connected to a control device, which can control the operation of the motor. Different motor operating parameters result in different sliding positions of the connector 522b relative to the valve seat 512. In this embodiment, when the motor is turned on, the connector 522b rotates about the central axis of the rotation shaft. During the rotation, it slides relative to the surface of the valve seat 512 where the valve ports are located, and the on / off state between the first cavity 501a and the second cavity 501b and each valve port changes.

[0088] In another embodiment, the separating assembly 522 includes a separator 522a and a connector 522b. One end of the connector 522b is connected to the separator 522a, and the other end is connected to the drive assembly 521. The separator 522a has an opening, the edge of which is slidably connected to the inner wall of the valve seat 512. The first valve port J, the second valve port K, the third valve port L, and the fourth valve port M are arranged in a ring-shaped interval around the rotation axis of the valve core 520. In this embodiment, the connector 522b enables precise control of the valve position switching of the reversing valve based on electronic control, effectively improving the control accuracy of the reversing valve when used in its heat pump system.

[0089] For example, the first valve port J, the third valve port L, the second valve port K, and the fourth valve port M are arranged sequentially on one of the inner wall surfaces of the valve seat 512. This helps to reduce the amount of movement of the valve core 520 when the first switching device 500 switches between different valve positions, thereby improving the efficiency and accuracy of valve position switching.

[0090] Furthermore, in one embodiment, referring to Figure 2 The separator 522a has an opening facing the specified direction, and the edge of the opening is slidably connected to the wall surface of the valve seat 512 containing the first valve port J, the third valve port L, the second valve port K, and the fourth valve port M. The opening covers a maximum of three adjacent valve ports among the first valve port J, the second valve port K, the third valve port L, and the fourth valve port M. This ensures the accuracy of the second valve position control.

[0091] In other embodiments, when the valve core 520 has more than one opening, the coverage area of ​​the opening can also cover up to two valve ports.

[0092] Regarding the second switching device 600, in this embodiment, the second switching device 600 is a four-way valve. The second switching device 600 is provided with a fifth valve port D, a sixth valve port C, a seventh valve port S, and an eighth valve port E. The fifth valve port D is connected to the exhaust port, the sixth valve port C is connected to the third valve port L, the seventh valve port S is connected to the return gas port, and the eighth valve port E is connected to the first end of the first heat exchange component 200. The second switching device 600 has a fourth valve position and a fifth valve position. The fourth valve position corresponds to the fifth valve port D being connected to the sixth valve port C, and the seventh valve port S being connected to the eighth valve port E. The fifth valve position corresponds to the fifth valve port D being connected to the eighth valve port E, and the seventh valve port S being connected to the sixth valve port C.

[0093] The first switching device 500 and the second switching device 600 are used to control three of the first heat exchange component 200, the second heat exchange component 300, and the third heat exchange component 400, so that the heat exchange system 10 at least forms a first operating mode. In the first operating mode, one of the first heat exchange component 200 condenses and releases heat, and one of the second heat exchange component 300 and the third heat exchange component 400 condenses and releases heat, while the other evaporates and absorbs heat. The first switching device 500 and the second switching device 600 are controlled by a control device to be in different valve positions, thereby controlling the refrigerant discharged from the compressor 100 to be divided into two paths.

[0094] In one embodiment, please refer to Figure 3 The first switching device 500 and the second switching device 600 are used to control the refrigerant discharged from the compressor 100 to be divided into two paths. One path of refrigerant flows sequentially through the first heat exchange component 200 and the third heat exchange component 400 before returning to the compressor 100, while the other path of refrigerant flows sequentially through the second heat exchange component 300 and the third heat exchange component 400 before returning to the compressor 100. In this embodiment, the first heat exchange component 200 is located indoors, while the second and third heat exchange components 300 and 400 are located outdoors. Thus, the first heat exchange component 200 condenses and releases heat to transfer heat to the indoor environment, thereby regulating the indoor temperature. The second heat exchange component 300 condenses and releases heat to remove frost from itself, thereby achieving defrosting without stopping indoor heating and improving indoor temperature comfort.

[0095] In another embodiment, please refer to Figure 5The first switching device 500 and the second switching device 600 are used to control the refrigerant discharged from the compressor 100 to be divided into two paths. One path of refrigerant flows sequentially through the first heat exchange component 200 and the second heat exchange component 300 before returning to the compressor 100. The other path of refrigerant flows sequentially through the third heat exchange component 400 and the second heat exchange component 300 before returning to the compressor 100. In this embodiment, the first heat exchange component 200 is located indoors, while the second and third heat exchange components 300 and 400 are located outdoors. Thus, the first heat exchange component 200 condenses and releases heat to transfer heat to the indoor environment, thereby regulating the indoor temperature. The third heat exchange component 400 condenses and releases heat to remove frost from itself, thereby achieving defrosting without stopping indoor heating and improving indoor temperature comfort.

[0096] Understandably, in actual operation, the second heat exchange component 300 and the third heat exchange component 400 can take turns condensing and releasing heat to improve the defrosting effect.

[0097] In one exemplary embodiment, please refer to Figures 2 to 6 The valve ports of the first switching device 500 include a first valve port J, a second valve port K, a third valve port L, and a fourth valve port M; the first valve port J is used to communicate with the exhaust port, the second valve port K is connected to the first end of the second heat exchange component 300, and the fourth valve port M is connected to the first end of the third heat exchange component 400; the first switching device 500 has a first valve position, a second valve position, and a third valve position.

[0098] The first valve port J corresponding to the first valve position is connected to the fourth valve port M, and the second valve port K is connected to the fourth valve port M; the second valve port K, the third valve port L, and the fourth valve port M corresponding to the second valve position are all blocked from the first valve port J; the first valve port J corresponding to the third position is connected to the fourth valve port M, and the second valve port K is connected to the third valve port L;

[0099] The second switching device 600 is provided with a fifth valve port D, a sixth valve port C, a seventh valve port S and an eighth valve port E. The fifth valve port D is connected to the exhaust port, the sixth valve port C is connected to the third valve port L, the seventh valve port S is connected to the return gas port, and the eighth valve port E is connected to the first end of the first heat exchange component 200.

[0100] The second switching device 600 has a fourth valve position and a fifth valve position. The fourth valve position corresponds to the fifth valve port D being connected to the sixth valve port C, and the seventh valve port S being connected to the eighth valve port E. The fifth valve position corresponds to the fifth valve port D being connected to the eighth valve port E, and the seventh valve port S being connected to the sixth valve port C.

[0101] In the first operating mode, the second switching device 600 is in the fifth valve position, the first switching device 500 is in the first valve position, or the first switching device 500 is in the third valve position.

[0102] Thus, this embodiment improves the first switching device 500 and uses the second device to achieve functional integration and simplified control of the heat exchange system 10.

[0103] In another embodiment, the first switching device 500 and the second switching device 600 are used to control three of the first heat exchange component 200, the second heat exchange component 300 and the third heat exchange component 400, so that the heat exchange system 10 also forms a second operating mode and / or a third operating mode.

[0104] In the second working mode, the first switching device 500 is in the second valve position and the second switching device 600 is in the fifth valve position, so that the first heat exchange component 200 condenses and releases heat, and the second heat exchange component 300 and the third heat exchange component 400 evaporate and absorb heat.

[0105] And / or, the heat exchange system 10 has a third operating mode in which the first switching device 500 is in the second valve position and the second switching device 600 is in the fourth valve position, so that the first heat exchange component 200 evaporates and absorbs heat, and the second heat exchange component 300 and the third heat exchange component 400 condense and release heat.

[0106] It is understood that the first working mode, the second working mode and the third working mode can be freely switched by the user. Normally, control commands are input through the control device, and the control device operates different control modes according to the control commands.

[0107] In this embodiment, the heat exchange system 10 further includes a third flow regulating component 900, which is located at the second end of the first heat exchange component 200; the third flow regulating component 900 is typically an electronic expansion valve.

[0108] In one embodiment, to further improve the indoor temperature comfort of the heat exchange system 10, the heat exchange system 10 includes a first flow rate regulating component 700, which is disposed in the flow path between the second heat exchange component 300 and the first heat exchange component 200. The first flow rate regulating component 700 is mainly used to regulate the flow rate of the refrigerant flowing through the second heat exchange component 300, thereby adapting to different temperature power and further improving the indoor temperature comfort of the heat exchange system 10. The first flow rate regulating component 700, which mainly regulates the flow rate of the refrigerant flowing through the first heat exchange component 200, may include no flow, low flow, high flow, or a flow rate adapted to a specific temperature.

[0109] In another embodiment, to further improve the indoor temperature comfort of the heat exchange system 10, the heat exchange system 10 includes a second flow regulating component 800, which is disposed in the flow path between the third heat exchange component 400 and the first heat exchange component 200. Similar to the previous embodiment, the second flow regulating component 800 is mainly used to regulate the flow rate of the refrigerant flowing through the third heat exchange component 400, thereby adapting to different temperature power and further improving the indoor temperature comfort of the heat exchange system 10. The second flow regulating component 800, mainly used to regulate the flow rate of the refrigerant flowing through the third heat exchange component 400, can include no flow, small flow, large flow, or a flow rate adapted to a specific temperature.

[0110] In yet another embodiment, please refer to Figure 1 and Figure 11 The first flow regulating component 700 is one or more of an electronic expansion valve, a throttling capillary tube, or a throttling short tube; and / or, the second flow regulating component 800 is one or more of an electronic expansion valve, a throttling capillary tube, or a throttling short tube.

[0111] Regarding electronic expansion valves, their primary function is to regulate refrigerant flow. However, they not only regulate refrigerant flow but also affect the energy efficiency ratio (EER) of air conditioners. An electronic expansion valve typically consists of a valve body 510, a valve core 520, a bellows, a transmission mechanism, and a pulse stepper motor. The pulse stepper motor acts as the driver, driving the valve core 520 to open and close, thereby regulating the refrigerant flow. The opening degree of an electronic expansion valve refers to the size of its opening or closing gap as it is opened, closed, or its opening / closing clearance changes. The opening degree controls the refrigerant flow; a smaller opening clearance results in a smaller refrigerant flow, and a larger opening clearance results in a larger refrigerant flow. Because the valve core 520 of the electronic expansion valve is a closed body, the driver does not have a manual control function.

[0112] Regarding throttling capillary tubes, their main function is to regulate the flow rate of refrigerant. A throttling capillary tube is typically a heat exchange system throttling device made of drawn copper tubing. As a throttling mechanism in a refrigeration system, the throttling capillary tube has advantages such as simple structure, low cost, self-compensation, and rapid system pressure balancing. Specifically, it is easy to manufacture and inexpensive: the capillary tube has no moving parts, making it less prone to failure and leakage, and is easy to manufacture and inexpensive. It has a self-compensating characteristic: the flow state of the refrigerant in the capillary tube, and the pressure and temperature changes along the tube length, create a subcooled zone, giving the capillary tube a self-compensating characteristic. It rapidly balances system pressure: when the refrigeration system stops, the capillary tube can quickly balance the high and low pressure sides, making it easy to start the refrigeration compressor motor upon restart. It has throttling characteristics in the subcooled and saturated zones: the throttling characteristic of the capillary tube is achieved by utilizing the resistance of the refrigerant flowing within the slender tube. Depending on the application, capillary tubes can be used with or without heat exchange. Therefore, the process of refrigerant flowing through a capillary tube can be typically represented as an adiabatic expansion process and a heat-exchange expansion process.

[0113] The primary function of the throttling pipe is also to regulate the refrigerant flow. The throttling pipe, also known as a short-pipe throttling valve, is a throttling mechanism used in heat exchange systems 10. As a low-cost, simple, and easy-to-install throttling mechanism, the throttling pipe has certain application value in specific refrigeration scenarios.

[0114] The advantages and disadvantages of electronic expansion valves and throttling capillary tubes are compared as follows:

[0115] Advantages: Electronic expansion valves offer precise flow control, enabling fine-grained control of the refrigeration system and improving energy efficiency and comfort. Furthermore, they automatically adjust refrigerant flow based on ambient temperature and load changes, requiring no manual intervention and making them more convenient to use. Compared to traditional thermostatic expansion valves, electronic expansion valves offer faster response times and higher control accuracy. Throttling capillary tubes, on the other hand, are simple in structure, low in manufacturing cost, and easy to install and connect, making them suitable for certain specific refrigeration scenarios.

[0116] Disadvantages: The electronic expansion valve's drawback is that in ultra-low temperature conditions, cooling / heating tends to be at two extremes, and the electronic expansion valve cannot meet the requirements. The advantages of a throttling capillary tube are its simple structure, low manufacturing cost, and convenient installation and connection; however, its throttling effect is greatly affected by ambient temperature, and it cannot automatically adjust to the optimal throttling state under different ambient temperatures.

[0117] The advantages and disadvantages of throttling short tubes and throttling capillary tubes are compared as follows:

[0118] Advantages: Simple structure and low cost. The throttling short tube consists of a section of pipe with a small diameter and two connectors. Its simple structure and relatively low manufacturing cost make it more economical than a throttling capillary tube, thus saving costs. Easy installation: The simple structure of the throttling short tube makes it easy to install and connect to the refrigeration system, improving the convenience and flexibility of installation.

[0119] Disadvantages: Throttling short tubes are suitable for certain specific refrigeration scenarios, such as small heat exchange systems or applications requiring simple throttling mechanisms. In contrast, throttling capillary tubes are likely more common in some large or high-end refrigeration systems.

[0120] Throttling effect: Although the throttling effect of the throttling tube may not be as precise as that of the capillary tube, it can meet the needs of some simple cooling requirements, such as the cooling part of a single-cooling air conditioner or a cooling and heating unit. At the same time, the throttling effect of the throttling tube is stable and reliable.

[0121] Using an electronic expansion valve can make the control of the heat exchange system 10 more precise, but it is expensive. Throttling capillary tubes and throttling short tubes can reduce manufacturing costs while achieving the above working mode.

[0122] This invention also provides a control method for an air conditioner, applied to the aforementioned air conditioner.

[0123] In this embodiment, the control method for the air conditioner includes:

[0124] When the air conditioner is operating in the target working mode, the first switching device 500 and the second switching device 600 are controlled to operate at the target valve position corresponding to the target working mode, so that the first heat exchange component 200, the second heat exchange component 300 and the third heat exchange component 400 reach the target heat exchange state corresponding to the target working mode.

[0125] The target working modes include the first working mode, the second working mode, and the third working mode.

[0126] Combination Figures 3 to 6 When the target operating mode is the first operating mode, the target valve position corresponding to the first switching device 500 is the first valve position. Figure 3 ) and the third valve position ( Figure 6 The target valve position of the second switching device 600 is the fifth valve position.

[0127] When the air conditioner is operating in the first working mode, the compressor 100 is turned on, the first switching device 500 is controlled to operate in the first valve position, and the second switching device 600 is controlled to operate in the fifth valve position. The first heat exchange component 200 is in the condensing and releasing heat state, the second heat exchange component 300 is in the condensing and releasing heat state, and the third heat exchange component 400 is in the evaporating and absorbing heat state.

[0128] The second switching device 600 is controlled to the fifth valve position, and the valve core 520 in the first switching device 500 is controlled to rotate to the first valve position. When the valve core 520 rotates to the first valve position, the first valve port J and the fourth valve port M are connected through the first cavity 501a, and the second valve port K and the third valve port L are connected through the second cavity 501b. The first switching device 500 and the second switching device 600 divide the refrigerant discharged from the compressor 100 into two paths, one of which can flow from the first valve... The gas flows into the first cavity 501a through port J, then out through the fourth valve port M to the second heat exchange assembly 300 and the third heat exchange assembly 400, then through the second valve port K to the second cavity 501b, and then back through the third valve port L to the return port of the compressor 100. Another gas flows from the fifth valve port D, the eighth valve port E, the first heat exchange assembly 200, the third heat exchange assembly 400, then through the second valve port K to the second cavity 501b, and then back through the third valve port L to the return port of the compressor 100.

[0129] In the third and fifth valve positions, the first heat exchange component 200 is in a condensation and heat release state, the third heat exchange component 400 is in a condensation and heat release state, and the second heat exchange component 300 is in an evaporation and heat absorption state. Specific flow rate adaptation changes will not be elaborated upon here.

[0130] In one embodiment, the step of controlling the first switching device 500 and the second switching device 600 to operate at the target position corresponding to the target operating mode, so that the first heat exchange component 200, the second heat exchange component 300, and the third heat exchange component 400 reach the target heat exchange state corresponding to the target operating mode, includes:

[0131] When the target operating mode is the first operating mode, the first switching device 500 is controlled to operate at the first valve position, or the first switching device 500 is controlled to operate at the third valve position; the second switching device 600 operates at the fifth valve position.

[0132] In this step, confirming the target operating mode as the first operating mode can be done by the user sending a corresponding command to run the first operating mode, or by the air conditioner monitoring the temperature of the second heat exchange component 300 and the third heat exchange component 400 in real time, and running the first operating mode when the temperature is lower than the preset value; or by receiving the weather conditions of the air conditioner's location when it is turned on, and running the first operating mode first when the temperature is lower than the preset value.

[0133] When the first working mode is running, it can run in either the first valve position or the third valve position first. Taking the first valve position as an example, by detecting the defrosting status of the second heat exchange component 300 (detecting the temperature of the heat exchange component), when the second heat exchange component 300 has completed defrosting (the detected temperature is a preset value), the first switching device 500 can automatically switch to the third valve position.

[0134] When the target working mode is the second working mode, the first switching device 500 is controlled to operate at the second valve position, and the second switching device 600 is controlled to be at the fifth valve position;

[0135] In this step, the target operating mode is confirmed to be the second operating mode. This is usually done by the user sending a corresponding command to run the second operating mode. Alternatively, when the user sends a corresponding command to run the first operating mode, it is detected that both the second heat exchange component 300 and the third heat exchange component 400 have completed defrosting.

[0136] When the target operating mode is the third operating mode, the first switching device 500 is controlled to operate at the second valve position, and the second switching device 600 is controlled to operate at the fourth valve position. In this step, confirming that the target operating mode is the second operating mode is usually done by the user sending the corresponding instruction.

[0137] This invention discloses a control method for an air conditioner, based on an air conditioner equipped with a first switching device 500 and a second switching device 600. When the air conditioner operates in a target heat exchange mode, the first switching device 500 and the second switching device 600 operate at corresponding target valve positions, so that the first heat exchange component 200, the second heat exchange component 300, and the third heat exchange component 400 reach the target heat exchange state corresponding to the target operating mode. This allows the second heat exchange component 300 and the third heat exchange component 400 to alternate between condensation heat release and evaporation heat absorption, thereby achieving uninterrupted indoor heating while the outdoor unit is heating and defrosting.

[0138] Furthermore, this embodiment of the invention also proposes a storage medium storing a control program for an air conditioner. When the control program for the air conditioner is executed by a processor, it implements the relevant steps of any embodiment of the control method for the air conditioner described above.

[0139] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0140] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0141] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0142] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heat exchange system, characterized in that, It includes a compressor, a first heat exchange assembly, a second heat exchange assembly, a third heat exchange assembly, a first switching device, and a second switching device; The compressor has an exhaust port and an exhaust port; The first switching device is connected to the exhaust port, the first end of the second heat exchange component, and the first end of the third heat exchange component, respectively; The second switching device is connected to the exhaust port, the first end of the first heat exchange component, and the return port; the second end of the first heat exchange component, the second end of the second heat exchange component, and the second end of the third heat exchange component are connected to each other; The first switching device and the second switching device are interconnected; The first switching device and the second switching device are used to control three of the first heat exchange component, the second heat exchange component and the third heat exchange component, so that the heat exchange system forms at least a first working mode. In the first working mode, the first heat exchange component condenses and releases heat, one of the second heat exchange component and the third heat exchange component condenses and releases heat, and the other evaporates and absorbs heat.

2. The heat exchange system as described in claim 1, characterized in that, The first switching device and the second switching device are used to control the refrigerant discharged by the compressor to be divided into two paths; One refrigerant stream flows sequentially through the first heat exchange component and the third heat exchange component before returning to the compressor; the other refrigerant stream flows sequentially through the second heat exchange component and the third heat exchange component before returning to the compressor. Alternatively, one refrigerant stream flows sequentially through the first heat exchange component and the second heat exchange component before returning to the compressor, while another refrigerant stream flows sequentially through the third heat exchange component and the second heat exchange component before returning to the compressor.

3. The heat exchange system as described in claim 2, characterized in that, The valve ports of the first switching device include a first valve port, a second valve port, a third valve port, and a fourth valve port; the first valve port is used to communicate with the exhaust port, the second valve port is used to communicate with the first end of the second heat exchange component, and the fourth valve port is used to communicate with the first end of the third heat exchange component; the first switching device has a first valve position, a second valve position, and a third valve position. The first valve port corresponding to the first valve position is connected to the fourth valve port, and the second valve port is connected to the third valve port; The second valve port, the third valve port, and the fourth valve port corresponding to the second valve position are all blocked from the first valve port, and the second valve port, the third valve port, and the fourth valve port are interconnected. The first valve port corresponding to the third position is connected to the second valve port, and the third valve port is connected to the fourth valve port; The second switching device is provided with a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port. The fifth valve port is connected to the exhaust port, the sixth valve port is connected to the third valve port, the seventh valve port is connected to the return gas port, and the eighth valve port is connected to the first end of the first heat exchange component. The second switching device has a fourth valve position and a fifth valve position. The fourth valve position corresponds to the fifth valve port being connected to the sixth valve port, and the seventh valve port being connected to the eighth valve port. The fifth valve position corresponds to the fifth valve port being connected to the eighth valve port, and the seventh valve port being connected to the sixth valve port. In the first operating mode, the second switching device is in the fifth valve position, the first switching device is in the first valve position, or the first switching device is in the third valve position.

4. The heat exchange system as described in claim 3, characterized in that, The first switching device and the second switching device are used to control three of the first heat exchange component, the second heat exchange component and the third heat exchange component, so that the heat exchange system can also form a second working mode and / or a third working mode. In the second working mode, the first switching device is in the second valve position and the second switching device is in the fifth valve position, so that the first heat exchange component condenses and releases heat, and the second heat exchange component and the third heat exchange component evaporate and absorb heat. And / or, the heat exchange system has a third operating mode, in which the first switching device is in the second valve position and the second switching device is in the fourth valve position, so that the first heat exchange component evaporates and absorbs heat, and the second heat exchange component and the third heat exchange component condense and release heat.

5. The heat exchange system as described in claim 3, characterized in that, The first switching device is a four-way multi-position directional valve, which includes a valve body and a valve core. The valve body has a receiving cavity and a first valve port, a second valve port, a third valve port and a fourth valve port communicating with the receiving cavity; The valve core is rotatably disposed within the accommodating cavity, and the valve core divides the accommodating cavity into a first cavity and a second cavity that are independent of each other; the valve core is slidably connected to the surface of the valve seat so that the first switching device has a first valve position, a second valve position and a third valve position.

6. The heat exchange system as described in claim 5, characterized in that, The valve body includes a housing, a valve seat, and four connecting pipes. The valve seat and the housing enclose the receiving cavity. The first valve port, the second valve port, the third valve port, and the fourth valve port are disposed on the valve seat. The four connecting pipes are respectively disposed on the valve seat corresponding to the first valve port, the second valve port, the third valve port, and the fourth valve port.

7. The heat exchange system as described in claim 6, characterized in that, The valve core includes a drive assembly and a partition assembly. The drive assembly is used to drive the partition assembly. The partition assembly is slidably connected to the surface of the valve seat. The partition assembly divides the accommodating cavity into a first cavity and a second cavity.

8. The heat exchange system as described in claim 7, characterized in that, The separation assembly includes a separator and a connector. One end of the connector is connected to the separator, and the other end is connected to the drive assembly. The separator has an opening, and the edge of the opening is slidably connected to the inner wall of the valve seat. The first valve port, the second valve port, the third valve port, and the fourth valve port are arranged in a ring-shaped interval around the rotation axis of the valve core.

9. The heat exchange system as described in claim 1, characterized in that, The heat exchange system includes a first flow regulating component, which is disposed in the flow path between the second heat exchange component and the first heat exchange component. And / or, the heat exchange system includes a second flow regulating component, which is disposed in the flow path between the third heat exchange component and the first heat exchange component.

10. The heat exchange system as described in claim 9, characterized in that, The first flow regulating component is one or more of an electronic expansion valve, a throttling capillary tube, or a throttling short tube; And / or, the second flow regulating component is one or more of an electronic expansion valve, a throttling capillary, or a throttling short tube.

11. An air conditioner, characterized in that, Including the heat exchange system as described in any one of claims 1 to 10.

12. A control method for an air conditioner, characterized in that, The air conditioner includes a compressor, a first heat exchange component, a second heat exchange component, a third heat exchange component, a first switching device, and a second switching device. The compressor has an exhaust port and a return port. The first switching device is connected to the exhaust port, a first end of the second heat exchange component, and a first end of the third heat exchange component, respectively. The second switching device is connected to the exhaust port, a first end of the first heat exchange component, and the return port. The second ends of the first, second, and third heat exchange components are interconnected. The first switching device and the second switching device are interconnected. The control method of the air conditioner includes the following steps: When the air conditioner is operating in the target working mode, the first switching device and the second switching device are controlled to operate at the target valve position corresponding to the target working mode, so that the first heat exchange component, the second heat exchange component and the third heat exchange component reach the target heat exchange state corresponding to the target working mode.

13. The control method for an air conditioner as described in claim 12, characterized in that, The step of controlling the first switching device and the second switching device to operate at the target position corresponding to the target operating mode, so that the first heat exchange component, the second heat exchange component and the third heat exchange component reach the target heat exchange state corresponding to the target operating mode, includes: When the target operating mode is the first operating mode, the first switching device is controlled to operate at the first valve position, or the first switching device is controlled to operate at the third valve position; the second switching device operates at the fifth valve position. When the target working mode is the second working mode, the first switching device is controlled to operate at the second valve position, and the second switching device is controlled to be in the fifth valve position; When the target operating mode is the third operating mode, the first switching device is controlled to operate at the second valve position, and the second switching device is controlled to operate at the fourth valve position.

14. A storage medium, characterized in that, The storage medium stores a control program for an air conditioner, which, when executed by a processor, implements the steps of the air conditioner control method as described in claim 12 or 13.

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