Heat exchange system and air conditioner

Abstract

The utility model discloses a heat exchange system and an air conditioner, and relates to the technical field of air handling equipment, 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 be communicated 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] The utility model relates to the technical field of air processing equipment, in particular to a heat exchange system and an air conditioner. Background Art

[0002] As living standards improve, variable frequency heat pump air conditioners will be more widely used in people's lives. In cold winter, when the outdoor temperature is low, the surface of the outdoor heat exchanger of the heat exchange system is prone to frost. Once frost forms on the surface of the heat exchanger, the heat exchange with the outside world will be greatly affected, and the performance of the heat pump will decay rapidly. In the prior art, when the air conditioner is heating and defrosting, the commonly used method is to switch the air conditioner to the cooling mode cycle, and the indoor cross-flow fan stops running. During the defrosting period, heat cannot be output to the indoor environment. At the same time, the indoor ambient temperature will drop due to the refrigeration operation of the internal mechanism, resulting in a poor user experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a heat exchange system and an air conditioner, aiming to solve the problem of poor user experience caused by the need to stop heating during defrosting.

[0004] To achieve the above-mentioned purpose, the utility model proposes a heat exchange system, which 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;

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

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

[0007] The second switching device is in communication with the exhaust port, the first end of the first heat exchange component and the return air 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 in communication with each other;

[0008] The first switching device and the second switching device are connected to each other;

[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 from the compressor to be divided into two paths;

[0011] Among them, one refrigerant flows through the first heat exchange component and the third heat exchange component in sequence and then flows back to the compressor, and the other refrigerant flows through the second heat exchange component and the third heat exchange component in sequence and then flows back to the compressor;

[0012] Alternatively, one refrigerant flows through the first heat exchange component and the second heat exchange component in sequence and then flows back to the compressor, and the other refrigerant flows through the third heat exchange component and the second heat exchange component in sequence and then flows back 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 communicated with the first end of the second heat exchange component; the fourth valve port is communicated 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;

[0014] The first valve port corresponding to the first valve position is communicated with the fourth valve port, and the second valve port is communicated with 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 connected to each other;

[0016] The first valve port corresponding to the third valve position is communicated with the fourth valve port, and the second valve port is communicated with 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 communicated with the exhaust port, the sixth valve port is communicated with the third valve port, the seventh valve port is communicated with the return air port, and the eighth valve port is communicated with 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 working 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 also forms a second working mode and / or a third working 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 working 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 reversing valve, and the four-way multi-position reversing valve includes a valve body and a valve core:

[0024] The valve body has an accommodating cavity and the first valve port, the second valve port, the third valve port and the fourth valve port communicated with the accommodating cavity;

[0025] The valve core is rotatably disposed in 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 body, so that at most three valve ports among the first valve port, the second valve port, the third valve port and the fourth valve port are connected to the first cavity at the same time, or at most three valve ports among the first valve port, the second valve port, the third valve port and the fourth valve port are connected to the second cavity at the same time.

[0026] In one embodiment, the valve body includes a shell, a valve seat and four connecting pipes, the valve seat and the shell enclose the accommodating cavity, the first valve port, the second valve port, the third valve port and the fourth valve port are arranged on the valve seat, and the four connecting pipes are respectively arranged 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 driving component and a partition component, the driving component is used to drive the partition component, the partition component is slidably connected to the surface of the valve seat, and the partition component divides the accommodating cavity into the first cavity and the second cavity.

[0028] In one embodiment, the partition assembly includes a partition and a connecting member, one end of the connecting member is connected to the partition, and the other end is connected to the driving assembly; the partition has an opening cavity, the opening edge of the opening cavity 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 rotating axis of the valve core.

[0029] In one embodiment, the heat exchange system includes a first flow regulating component, which is disposed on a 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, and the second flow regulating component is arranged on 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 tube 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 utility model provides an air conditioner, which comprises the heat exchange system described in any one of the above embodiments.

[0034] In one embodiment, the air conditioner further comprises an outdoor unit housing and an outdoor fan, the second heat exchange component, the third heat exchange component and the outdoor fan are all arranged in the outdoor unit housing, the outdoor fan is used to supply air to the second heat exchange component and the third heat exchange component, and the number of the outdoor fans may be one or two; or

[0035] The air conditioner also includes an indoor unit housing and an indoor fan. The second heat exchange component, the third heat exchange component and the indoor fan are all arranged in the indoor unit housing. The indoor fan is used to supply air to the second heat exchange component and the third heat exchange component. The number of the indoor fans can be one or two.

[0036] The utility model provides a control method for an air conditioner, the air conditioner comprises 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 an air return port; the first switching device is respectively connected to the exhaust port, the first end of the second heat exchange component and the first end of the third heat exchange component; the second switching device is connected to the exhaust port, the first end of the first heat exchange component and the air 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 connected to each other; the control method of the air conditioner comprises the following steps:

[0037] When the air conditioner operates in a target operating mode, the first switching device and the second switching device are controlled to operate at a target valve 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 a target heat exchange state corresponding to the target operating mode.

[0038] 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 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 includes:

[0039] When the target working mode is the first working 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 is controlled to operate at the fifth valve position;

[0040] When the target working mode is the second working mode, controlling the first switching device to operate at the second valve position, and controlling the second switching device to be at the fifth valve position;

[0041] When the target operating mode is the third operating mode, the first switching device is controlled to operate at a second valve position, and the second switching device is controlled to operate at a fourth valve position.

[0042] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of an air conditioner is stored. When the control program of the air conditioner is executed by a processor, the steps of the control method of the air conditioner as described in any of the above items are implemented.

[0043] The technical effect of the technical solution provided by the utility model. The technical solution of the utility model is to set a first switching device and a second switching device to be connected with the exhaust port of the compressor, and control one of the second heat exchange component and the third heat exchange component to condense and release heat, and the other to evaporate and absorb heat, and through the control of the first switching device and the second switching device, the working state of the second heat exchange component and the third heat exchange component can be switched between condensation and release heat or evaporation and absorption of heat, so that the second heat exchange component and the third heat exchange component can work alternately between condensation and release heat or evaporation and absorption of heat, so as to achieve outdoor heating and defrosting while uninterrupted indoor heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0045] Figure 1 A schematic structural diagram of an embodiment of a heat exchange system provided by the utility model;

[0046] Figure 2 for Figure 1 A structural schematic diagram of an embodiment of a first switching device;

[0047] Figure 3 A schematic diagram of an embodiment of the refrigerant flow direction of a heat exchange system in a first working mode;

[0048] Figure 4 for Figure 3 Schematic diagram of the valve port connection state in which the first switching device is in the first valve position;

[0049] Figure 5 A schematic diagram of another embodiment of the refrigerant flow direction of the heat exchange system in the first working mode;

[0050] Figure 6 for Figure 5 Schematic diagram of the valve port connection state when the first switching device is in the third valve position;

[0051] Figure 7 A schematic diagram of an embodiment of the refrigerant flow direction of a heat exchange system in a second working mode;

[0052] Figure 8 for Figure 7 Schematic diagram of the valve port connection state when the first switching device is in the second valve position;

[0053] Fig. 9 A schematic diagram of an embodiment of the refrigerant flow direction of the heat exchange system in the third working mode;

[0054] Fig.10 for Fig. 9 Schematic diagram of the valve port connection state when the first switching device is in the second valve position;

[0055] Fig.11 This is a structural schematic diagram of another embodiment of the heat exchange system provided by the utility model.

[0056] Description of Figure Numbers:

[0057] 10. Heat exchange system;

[0058] 100, compressor; 101, exhaust port; 102, air return port;

[0059] 200, a first heat exchange component;

[0060] 300. A second heat exchange component;

[0061] 400. a third heat exchange component;

[0062] 500, first switching device; J, first valve port; K, second valve port; L, third valve port; M, fourth valve port;

[0063] 501, accommodating cavity; 501a, first cavity; 501b, second cavity;

[0064] 510, valve body; 511, housing; 512, valve seat; 513, connecting pipe;

[0065] 520, valve core; 521, driving assembly; 522, partition assembly; 522a, partition; 522b, connecting piece;

[0066] 600, second switching device; D, fifth valve port; C, sixth valve port; S, seventh valve port; E, eighth valve port;

[0067] 700, a first flow regulating component;

[0068] 800, a second flow regulating component;

[0069] 900. A third flow regulating component.

[0070] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0072] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0073] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0074] As living standards improve, variable frequency heat pump air conditioners will be more widely used in people's lives. In cold winter, when the outdoor temperature is low, the surface of the outdoor heat exchanger of the heat exchange system is prone to frost. Once frost forms on the surface of the heat exchanger, the heat exchange with the outside world will be greatly affected, and the performance of the heat pump will decay rapidly. In the prior art, when the air conditioner is heating and defrosting, the commonly used method is to switch the air conditioner to the cooling mode cycle, and the indoor cross-flow fan stops running. During the defrosting period, heat cannot be output to the indoor environment. At the same time, the indoor ambient temperature will drop due to the refrigeration operation of the internal mechanism, resulting in a poor user experience.

[0075] The utility model proposes a heat exchange system, an air conditioner and a control method thereof, aiming to solve the problem of poor user experience caused by stopping heating during defrosting. Figures 1 to 11 , solid arrows indicate spaces, slots, or holes.

[0076] The embodiment of the utility model provides an air conditioner, which includes but is not limited to: a wall-mounted air conditioner, a mobile air conditioner, a window air conditioner, a cabinet air conditioner, a ceiling air conditioner, a multi-split air conditioner, and the like.

[0077] In this example, see Figure 1 and Fig.11In one embodiment of the utility model, 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 an air return port; the first switching device 500 is respectively 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; the second switching device 600 is connected to the exhaust port, the first end of the first heat exchange component 200 and the air return port; the second end of the first heat exchange component 200, the second heat exchange component 300 and the third heat exchange component 400 are connected to the exhaust port, the first end of the first heat exchange component 200 and the air return port; The second end of the heat 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, one of the second heat exchange component 300 and the third heat exchange component 400 condenses and releases heat, and the other evaporates and absorbs heat.

[0078] In the embodiment of the present application, 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; wherein the air conditioner further comprises an outdoor unit housing and an outdoor fan, and the second heat exchange component 300, the third heat exchange component 400 and the outdoor fan are all arranged in the outdoor unit housing, and the outdoor fan is used to supply 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; wherein the air conditioner further comprises an indoor unit housing and an indoor fan, and the second heat exchange component 300, the third heat exchange component 400 and the indoor fan are all arranged in the indoor unit housing, and the indoor fan is used to supply 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.

[0079] The technical effect of the technical solution provided by the utility model. The technical solution of the utility model is to set the first switching device 500 and the second switching device 600 to be connected with the exhaust port of the compressor 100, and control one of the second heat exchange component 300 and the third heat exchange component 400 to condense and release heat, and the other to evaporate and absorb heat, and through the control of the first switching device 500 and the second switching device 600, the working state of the second heat exchange component 300 and the third heat exchange component 400 can be switched between condensation and release heat or evaporation and absorption of heat, so that the second heat exchange component 300 and the third heat exchange component 400 can work alternately between condensation and release heat or evaporation and absorption of heat, so as to achieve outdoor heating and defrosting while uninterrupted indoor heating.

[0080] Among them, the air conditioner also includes a control device, and 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, and the control device can control the above-mentioned components to operate in a preset manner.

[0081] 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 arranged indoors, and the second heat exchange component 300 and the third heat exchange component 400 are arranged outdoors, such as a wall-mounted air conditioner or a cabinet air conditioner, wherein the second heat exchange component 300 and the third heat exchange component 400 can be integrated in one outdoor unit or in 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 arranged indoors, such as a mobile air conditioner.

[0082] Regarding the first switching device 500, in this embodiment, the first switching device 500 is a four-way multi-position reversing valve, wherein the four-way multi-position reversing valve has a plurality of valve ports, and the number of valve ports is greater than or equal to four, and the plurality of valve ports are divided into two groups, the valve ports in the groups are interconnected, and the number of valve ports in each group is not greater than three. In other embodiments, the first switching device 500 may also be a reversing module formed by combining other valve bodies 510.

[0083] For example, see Figures 1 to 3, 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 communicated with the first end of the second heat exchange component 300; the fourth valve port M is communicated with 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 communicated with the fourth valve port M, and the second valve port K is communicated with 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 communicated with each other; the first valve port J corresponding to the third valve position is communicated with the fourth valve port M, and the second valve port K is communicated with 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, and so on.

[0084] See also Figure 2 In one embodiment, the first switching device 500 is a four-way multi-position reversing valve, which includes a valve body 510 and a valve core 520: the valve body 510 has a receiving chamber 501 and the first valve port J, the second valve port K, the third valve port L and the fourth valve port M connected to the receiving chamber 501; the valve core 520 is rotatably arranged in the receiving chamber 501, and the valve core 520 divides the receiving chamber 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 body 510, so that the first switching device 500 has a first valve position, a second valve position and a third valve position.

[0085] The valve core 520 divides the accommodating cavity 501 into a first cavity 501a and a second cavity 501b that are independent of each other, that is, the first cavity 501a and the second cavity 501b are isolated from each other, and the refrigerant is not allowed to flow between the first cavity 501a and the second cavity 501b. Of course, the first switching device 500 may have other valve positions in addition to the above three valve positions, which satisfy that at most three valve ports among the first valve port J, the second valve port K, the third valve port L and the fourth valve port M are connected to the first cavity 501a at the same time, or at most three valve ports among the first valve port J, the second valve port K, the third valve port L and the fourth valve port M are connected to the second cavity 501b at the same time.

[0086] For further information, please refer to Figure 2The valve body 510 includes a shell 511, a valve seat 512 and four connecting pipes 513. The valve seat 512 and the shell 511 enclose the accommodating chamber 501. The first valve port J, the second valve port K, the third valve port L and the fourth valve port M are arranged on the valve seat 512. The four connecting pipes 513 are arranged 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 respectively.

[0087] Exemplarily, the four connecting pipes 513 are respectively a first connecting pipe 513, a second connecting pipe 513, a third connecting pipe 513 and a fourth connecting pipe 513, and the first connecting pipe 513, the second connecting pipe 513, the third connecting pipe 513 and the fourth connecting pipe 513 respectively correspond to the first valve port J, the second valve port K, the third valve port L and the fourth valve port M. The provision of the connecting pipe 513 facilitates the connection of the first switching device 500 to the heat exchange system 10.

[0088] In one embodiment, the valve core 520 includes a driving component 521 and a partition component 522. The driving component 521 is used to drive the partition component 522. The partition component 522 is slidably connected to the surface of the valve seat 512. The partition component 522 divides the accommodating chamber 501 into the first chamber 501a and the second chamber 501b. The driving component 521 generally includes a motor and a motor mounting structure and a transmission structure. The partition component 522 is connected to the output shaft of the motor. When the motor is turned on, the output shaft of the driving motor drives the partition component 522 to rotate and slide relative to the valve seat 512, thereby realizing that the first switching device 500 can directly switch between the first valve position, the second valve position and the third valve position.

[0089] The motor here can be a servo motor or a stepper motor, etc. The motor is connected to a control device, and the control device can control the operation of the motor. Different motor operation parameters result in different sliding positions of the connecting member 522b relative to the valve seat 512. In this embodiment, when the motor is turned on, the connecting member 522b rotates about the central axis of the rotating shaft, and slides relative to the surface of the valve seat 512 provided with the valve port during the rotation process, and the on-off state between the first cavity 501a and the second cavity 501b and each valve port changes.

[0090] In another embodiment, the partition assembly 522 includes a partition 522a and a connector 522b, one end of the connector 522b is connected to the partition 522a, and the other end is connected to the drive assembly 521; the partition 522a has an opening cavity, the opening edge of the opening cavity is slidably connected to the inner wall of the valve seat 512, and the first valve port J, the second valve port K, the third valve port L and the fourth valve port M are arranged in annular intervals around the rotating shaft of the valve core 520. In this embodiment, by setting the connector 522b, precise control of the valve position switching of the reversing valve based on electric control can be achieved, ensuring that the control accuracy of the reversing valve is effectively improved when it is used in its heat pump system.

[0091] For example, the first valve port J, the third valve port L, the second valve port K and the fourth valve port M are sequentially arranged on one inner wall surface of the valve seat 512. Based on this, it is helpful to reduce the activity 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.

[0092] Further, in one embodiment, referring to Figure 2 The partition 522a has an opening cavity, which is arranged in a direction, and the opening edge of the opening cavity is slidably connected to the wall surface of the valve seat 512 where the first valve port J, the third valve port L, the second valve port K and the fourth valve port M are located, and the coverage range of the opening cavity covers at most 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. Based on this, the accuracy of the second valve position control can be ensured.

[0093] In other embodiments, when more than one opening cavity is provided in the valve core 520 , the coverage range of the opening cavity may also cover two valve ports at most.

[0094] Regarding the second switching device 600, in the present embodiment, the second switching device 600 is a four-way valve, and 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 air 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.

[0095] 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, one of the second heat exchange component 300 and the third heat exchange component 400 condenses and releases heat, and 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, so as to control the refrigerant discharged from the compressor 100 to be divided into two paths.

[0096] In one embodiment, see 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; wherein, one path of refrigerant flows through the first heat exchange component 200 and the third heat exchange component 400 in sequence and then flows back to the compressor 100, and the other path of refrigerant flows through the second heat exchange component 300 and the third heat exchange component 400 in sequence and then flows back to the compressor 100. In this embodiment, the first heat exchange component 200 is arranged indoors, and the second heat exchange component 300 and the third heat exchange component 400 are arranged outdoors, so that the first heat exchange component 200 condenses and releases heat to transfer heat to the room, thereby adjusting the indoor temperature, and the second heat exchange component 300 condenses and releases heat to remove frost from the second heat exchange component 300, thereby achieving defrosting without stopping indoor heating, thereby improving indoor temperature comfort.

[0097] In another embodiment, see Figure 5 , 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, wherein one path of refrigerant flows through the first heat exchange component 200 and the second heat exchange component 300 in sequence and then flows back to the compressor 100, and the other path of refrigerant flows through the third heat exchange component 400 and the second heat exchange component 300 in sequence and then flows back to the compressor 100. In this embodiment, the first heat exchange component 200 is arranged indoors, and the second heat exchange component 300 and the third heat exchange component 400 are arranged outdoors. In this way, the first heat exchange component 200 condenses and releases heat to transfer heat to the room, thereby adjusting the indoor temperature, and the third heat exchange component 400 condenses and releases heat to remove frost from the third heat exchange component 400, thereby achieving defrosting without stopping indoor heating, thereby improving indoor temperature comfort.

[0098] It is understandable that, in the actual working process, the second heat exchange component 300 and the third heat exchange component 400 can condense and release heat in turn to improve the defrosting effect.

[0099] In an exemplary embodiment, see 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 communicated with the first end of the second heat exchange component 300; the fourth valve port M is communicated with 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;

[0100] The first valve port J corresponding to the first valve position is communicated with the fourth valve port M, and the second valve port K is communicated with 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 valve position is communicated with the fourth valve port M, and the second valve port K is communicated with the third valve port L;

[0101] 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 communicated with the exhaust port, the sixth valve port C is communicated with the third valve port L, the seventh valve port S is communicated with the return air port, and the eighth valve port E is communicated with the first end of the first heat exchange component 200;

[0102] 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.

[0103] In the first working 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.

[0104] In this way, this embodiment achieves functional integration and simplified control of the heat exchange system 10 by improving the first switching device 500 and using it in conjunction with the second device.

[0105] 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 the second working mode and / or the third working mode;

[0106] 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;

[0107] And / or, the heat exchange system 10 has a third working mode. In the third working mode, 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.

[0108] It can be understood that the first working mode, the second working mode and the third working mode can be switched freely by the user. Usually, a control instruction is input through the control device, and the control device runs different control modes according to the control instruction.

[0109] In this embodiment, the heat exchange system 10 further includes a third flow regulating component 900, and the third flow regulating component 900 is disposed at the second end of the first heat exchange component 200; the third flow regulating component 900 is generally an electronic expansion valve.

[0110] In one embodiment, in order to further improve the indoor temperature comfort of the heat exchange system 10, the heat exchange system 10 includes a first flow regulating component 700, which is arranged on the flow path between the second heat exchange component 300 and the first heat exchange component 200. The first flow regulating component 700 is mainly used to regulate the flow of the refrigerant flowing through the second heat exchange component 300, so as to adapt to different temperature powers and further improve the indoor temperature comfort of the heat exchange system 10. The first flow regulating component 700 is mainly used to regulate the flow of the refrigerant flowing through the first heat exchange component 200, which may include no flow, small flow, large flow, or a flow corresponding to the specific temperature adaptation.

[0111] In another embodiment, in order 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 arranged on the flow path between the third heat exchange component 400 and the first heat exchange component 200. Similar to the previous implementation, the second flow regulating component 800 is mainly used to regulate the flow of the refrigerant flowing through the third heat exchange component 400, so as to adapt to different temperature powers and further improve the indoor temperature comfort of the heat exchange system 10. The second flow regulating component 800 is mainly used to regulate the flow of the refrigerant flowing through the third heat exchange component 400, which may include no flow, small flow, large flow, or a flow corresponding to the specific temperature adaptation.

[0112] In yet another embodiment, see Figure 1 and Fig.11 The first flow regulating component 700 is one or more of an electronic expansion valve, a throttling capillary 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 or a throttling short tube.

[0113] Regarding the electronic expansion valve, the main function of the electronic expansion valve is to adjust the flow of the refrigerant, but it is not only used to adjust the flow of the refrigerant, but also can affect the energy efficiency ratio of the air conditioner. The electronic expansion valve is usually composed of a valve body 510, a valve core 520, a bellows, a transmission mechanism and a pulse stepper motor, among which the pulse stepper motor is a driver, which is used to drive the valve core 520 to open and close, thereby adjusting the flow of the refrigerant. The opening control of the electronic expansion valve: The opening of the electronic expansion valve refers to the size of the opening or closing gap as it is opened, closed or changed. The opening can be used to control the flow of the refrigerant. The smaller the opening gap, the smaller the refrigerant flow, and the larger the opening gap, the greater the refrigerant flow. Since the valve core 520 of the electronic expansion valve is a closed body, the electronic expansion valve driver does not have a manual control function.

[0114] Regarding the throttling capillary, the main function of the throttling capillary is to adjust the flow of the refrigerant. The throttling capillary is usually a throttling device of the heat exchange system 10 drawn from a copper tube. As a throttling mechanism of the refrigeration system, the throttling capillary has the advantages of simple structure, low price, self-compensation and rapid balance of system pressure. Specifically, it is easy to manufacture and low price: the capillary has no moving parts, is not prone to failure and leakage, and is easy to manufacture and low price. It has the characteristics of self-compensation: the flow state of the refrigerant in the capillary, the pressure and temperature changes along the length of the tube will produce a supercooling zone, which makes the capillary have the characteristics of self-compensation. Rapid balance of system pressure: when the refrigeration system is shut down, the capillary can quickly balance the high and low pressure side pressures, so that the refrigeration compressor 100 motor is easy to start when it is restarted. Throttling characteristics of the supercooling zone and the saturated zone: the throttling characteristics of the capillary are achieved by utilizing the resistance of the refrigerant flowing in the slender tube. Depending on the usage, the capillary tube can be used with or without heat exchange, so the process of refrigerant flowing through the capillary tube can be typified as an adiabatic expansion process and an expansion process with heat exchange.

[0115] Regarding the throttling short tube, the main function is also to adjust the flow rate of the refrigerant, wherein the throttling short tube, also known as a short tube throttling valve, is a throttling mechanism for the heat exchange system 10. As a throttling mechanism with low cost, simple structure and easy installation, the throttling short tube has certain application value in certain specific refrigeration scenarios.

[0116] The advantages and disadvantages of the electronic expansion valve and the throttling capillary are compared as follows:

[0117] Advantages: The advantage of the electronic expansion valve is that it has precise flow control capability, which can achieve fine control of the refrigeration system, thereby improving the energy saving effect and comfort of the air conditioner. In addition, the electronic expansion valve can also automatically adjust the refrigerant flow according to the ambient temperature and load changes, without manual intervention, and is more convenient to use. Compared with the traditional thermal expansion valve, the electronic expansion valve has a faster response speed and higher control accuracy. The advantages of the throttling capillary tube are simple structure, low manufacturing cost, easy installation and connection, and suitable for certain specific refrigeration scenarios.

[0118] Disadvantages: The disadvantage of electronic expansion valves is that under ultra-low temperature conditions, cooling / heating tends to two extremes, and electronic expansion valves cannot meet the requirements. The advantages of throttling capillaries are simple structure, low manufacturing cost, and easy installation and connection, but their throttling effect is greatly affected by the ambient temperature and cannot automatically adjust to the optimal throttling state under different ambient temperatures.

[0119] The advantages and disadvantages of the throttling short tube and the throttling capillary are compared as follows:

[0120] Advantages: Simple structure, low cost. The throttling short tube consists of a small diameter pipe and two connectors. Its structure is simple and the manufacturing cost is relatively low. Compared with the throttling capillary tube, the price of the throttling short tube is more economical, which is conducive to cost saving. Easy installation: The throttling short tube has a simple structure and is easy to install and connect to the refrigeration system, which improves the convenience and flexibility of installation.

[0121] Disadvantages: The throttling short tube is suitable for certain specific refrigeration scenarios, such as small heat exchange systems 10 or occasions where a simple throttling mechanism is required. In contrast, the throttling capillary tube may be more common in some large or high-end refrigeration systems.

[0122] Throttling effect: Although the throttling effect of the throttling short tube may not be as fine as that of the capillary tube, it can meet some simple refrigeration needs, such as the refrigeration part of a single-cold air conditioner or a cold and warm machine. At the same time, the throttling effect of the throttling short tube is stable and reliable.

[0123] The use of an electronic expansion valve can make the control of the heat exchange system 10 more precise, but its cost is high. The throttling capillary and the throttling short tube can reduce the manufacturing cost while realizing the above working mode.

[0124] The embodiment of the utility model further provides a control method of an air conditioner, which is applied to the above-mentioned air conditioner.

[0125] In this embodiment, the control method of the air conditioner includes:

[0126] When the air conditioner operates in a target operating mode, the first switching device 500 and the second switching device 600 are controlled to operate at a target valve 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 a target heat exchange state corresponding to the target operating mode.

[0127] The target working mode includes a first working mode, a second working mode and a third working mode.

[0128] Combination Figures 3 to 6 , when the target working mode is the first working 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.

[0129] When the air conditioner operates in the first working mode, the compressor 100 is turned on, the first switching device 500 is controlled to operate at the first valve position, and the second switching device 600 is controlled to operate at the fifth valve position, the first heat exchange component 200 is in a condensing and releasing heat state, the second heat exchange component 300 is in a condensing and releasing heat state, and the third heat exchange component 400 is in an evaporating and absorbing heat state.

[0130] 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 path of the refrigerant can be discharged from the first valve 501a and the other path can be discharged from the first valve 501b. After flowing into the first cavity 501a through port J, it flows out from the fourth valve port M to the second heat exchange component 300 and the third heat exchange component 400, flows into the second cavity 501b through the second valve port K, and then flows back to the return air port of the compressor 100 from the third valve port L. The other way is from the fifth valve port D, the eighth valve port E, the first heat exchange component 200, the third heat exchange component 400, flows into the second cavity 501b through the second valve port K, and then flows back to the return air port of the compressor 100 from the third valve port L.

[0131] In the third and fifth valve positions, the first heat exchange component 200 is in a condensing and releasing heat state, the third heat exchange component 400 is in a condensing and releasing heat state, and the second heat exchange component 300 is in an evaporating and absorbing heat state. The specific flow rate adaptability changes will not be described in detail here.

[0132] 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 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 includes:

[0133] When the target working mode is the first working 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 is controlled to operate at the fifth valve position;

[0134] In this step, confirming that the target working mode is the first working mode can be done by the user sending a corresponding instruction to run the first working mode, or the air conditioner detects the temperature of the second heat exchange component 300 and the third heat exchange component 400 in real time, and runs the first working mode when the temperature is lower than a preset value; or, when the air conditioner is turned on, the weather conditions of the location of the air conditioner are received, and when the temperature is lower than a preset value, the first working mode is first run.

[0135] When the first working mode is running, one of the first valve position or the third valve position can be operated first. Taking the first valve position as an example, by detecting the defrosting condition of the second heat exchange component 300 (detecting the temperature of the heat exchange component), when the defrosting of the second heat exchange component 300 is completed (the detected temperature condition is a preset value), the first switching device 500 can automatically switch to the third valve position for operation.

[0136] 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;

[0137] In this step, it is confirmed that the target operating mode is the second operating mode, usually by the user sending a corresponding instruction to run the second operating mode; it can also be that when the user sends a corresponding instruction to run the first operating mode, it is detected that the second heat exchange component 300 and the third heat exchange component 400 are both defrosted.

[0138] 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, the target operating mode is confirmed to be the second operating mode, usually by the user sending a corresponding instruction.

[0139] The control method of an air conditioner proposed in the embodiment of the utility model is based on an air conditioner provided 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 operation mode. Thus, the second heat exchange component 300 and the third heat exchange component 400 can work alternately between condensation heat release or evaporation heat absorption, so as to realize outdoor heating and defrosting while indoor uninterrupted heating.

[0140] In addition, an embodiment of the utility model further proposes a storage medium, on which a control program of an air conditioner is stored. When the control program of the air conditioner is executed by a processor, the relevant steps of any embodiment of the control method of the air conditioner as described above are implemented.

[0141] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0142] The serial numbers of the above-mentioned embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0143] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the utility model in essence or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the utility model.

[0144] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in 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 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 an air return port; The first switching device is respectively in communication with the exhaust port, the first end of the second heat exchange component, and the first end of the third heat exchange component; The second switching device is in communication with the exhaust port, the first end of the first heat exchange component and the return air 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 in communication with each other; The first switching device and the second switching device are connected to each other; 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 according to claim 1, characterized in that: The first switching device and the second switching device are used to control the refrigerant discharged from the compressor to be divided into two paths; Among them, one refrigerant flows through the first heat exchange component and the third heat exchange component in sequence and then flows back to the compressor, and the other refrigerant flows through the second heat exchange component and the third heat exchange component in sequence and then flows back to the compressor; Alternatively, one refrigerant flows through the first heat exchange component and the second heat exchange component in sequence and then flows back to the compressor, and the other refrigerant flows through the third heat exchange component and the second heat exchange component in sequence and then flows back to the compressor.

3. The heat exchange system according to 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 communicated with the first end of the second heat exchange component; the fourth valve port is communicated 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 communicated with the fourth valve port, and the second valve port is communicated with 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 connected to each other; The first valve port corresponding to the third valve position is communicated with the second valve port, and the third valve port is communicated with 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 communicated with the exhaust port, the sixth valve port is communicated with the third valve port, the seventh valve port is communicated with the return air port, and the eighth valve port is communicated with 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 working 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 according to 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 also forms 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 working 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 according to claim 3, characterized in that: The first switching device is a four-way multi-position reversing valve, and the four-way multi-position reversing valve includes a valve body and a valve core: The valve body has an accommodating cavity and the first valve port, the second valve port, the third valve port and the fourth valve port communicated with the accommodating cavity; The valve core is rotatably disposed in the accommodating chamber, and the valve core divides the accommodating chamber 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 body 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 according to claim 5, characterized in that: The valve body includes a shell, a valve seat and four connecting pipes. The valve seat and the shell enclose the accommodating cavity. The first valve port, the second valve port, the third valve port and the fourth valve port are arranged on the valve seat. The four connecting pipes are arranged on the valve seat corresponding to the first valve port, the second valve port, the third valve port and the fourth valve port respectively.

7. The heat exchange system according to claim 6, characterized in that: The valve core includes a driving component and a partitioning component, wherein the driving component is used to drive the partitioning component, the partitioning component is slidably connected to the surface of the valve seat, and the partitioning component partitions the accommodating cavity into the first cavity and the second cavity.

8. The heat exchange system according to claim 7, characterized in that: The partition assembly includes a partition and a connecting member, one end of the connecting member is connected to the partition, and the other end is connected to the driving assembly; the partition has an opening cavity, the opening edge of the opening cavity 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 rotating axis of the valve core.

9. The heat exchange system according to claim 1, characterized in that: The heat exchange system comprises a first flow regulating component, wherein the first flow regulating component is arranged on 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, and the second flow regulating component is arranged on the flow path between the third heat exchange component and the first heat exchange component.

10. The heat exchange system according to 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: The heat exchange system comprises the heat exchange system as claimed in any one of claims 1 to 10.

12. The air conditioner according to claim 11, characterized in that: The air conditioner further comprises an outdoor unit housing and an outdoor fan, wherein the second heat exchange component, the third heat exchange component and the outdoor fan are all arranged in the outdoor unit housing, and the outdoor fan is used to supply air to the second heat exchange component and the third heat exchange component, and the number of the outdoor fans may be one or two; or The air conditioner also includes an indoor unit housing and an indoor fan. The second heat exchange component, the third heat exchange component and the indoor fan are all arranged in the indoor unit housing. The indoor fan is used to supply air to the second heat exchange component and the third heat exchange component. The number of the indoor fans can be one or two.

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