Air conditioner and control method thereof

Abstract

The present application relates to the field of air conditioning technology, in particular to an air conditioner and a control method thereof. The air conditioner comprises an indoor heat exchanger, a flow path control device and a bypass heat exchanger located outdoors, and the indoor heat exchanger and the bypass heat exchanger are both used for refrigeration or heating; the flow path control device is configured to make the indoor heat exchanger and the bypass heat exchanger work simultaneously or only make the indoor heat exchanger work. The present application can achieve the purpose of keeping the air conditioner running while reaching the temperature, avoid the frequent start and stop of the compressor, and avoid the problem of loud noise caused by the discontinuity of the sound emitted by the air conditioner, improve the service life of the compressor and the reliability and safety of the air conditioner, reduce the indoor environment temperature fluctuation, avoid the indoor environment temperature from being cold and hot alternately, and improve the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, in particular to an air conditioner and a control method thereof. BACKGROUND

[0002] At present, when the indoor temperature approaches the user set temperature during the use of the air conditioner, the air conditioner controls the temperature by reducing the frequency, but the compressor operates at the minimum operating frequency, and the indoor temperature will reach the user set temperature. When the temperature reaches the set temperature, the compressor stops working, and when the indoor temperature exceeds the set temperature, the compressor restarts operation. Therefore, the existing air conditioner has the problem of frequent temperature reaching and stopping, which will cause large indoor temperature fluctuations, large use noise and serious impact on the service life of the compressor, thereby greatly reducing the reliability and safety of the air conditioner and reducing the user experience. SUMMARY

[0003] In view of the above problems, the present application is proposed to provide an air conditioner and a control method thereof which overcome the above problems or at least partially solve the above problems, aiming to solve the problem of frequent temperature reaching and stopping of the existing air conditioner, so as to improve the user experience.

[0004] In one aspect, the present application provides an air conditioner comprising an indoor heat exchanger, the air conditioner further comprising a flow path control device and a bypass heat exchanger located outdoors, the indoor heat exchanger and the bypass heat exchanger are both used for refrigeration or heating.

[0005] The flow path control device is configured to make the indoor heat exchanger and the bypass heat exchanger work simultaneously, or only make the indoor heat exchanger work.

[0006] Optionally, the flow path control device is further configured to adjust the refrigerant flow through the indoor heat exchanger and the bypass heat exchanger when the indoor heat exchanger and the bypass heat exchanger work simultaneously.

[0007] Optionally, the flow path control device is further configured to only make the bypass heat exchanger work.

[0008] Optionally, the indoor heat exchanger and the bypass heat exchanger are arranged in parallel.

[0009] Optionally, the air conditioner further comprises an outdoor heat exchanger, the outdoor heat exchanger is in thermal connection with the bypass heat exchanger.

[0010] Optionally, the air conditioner further comprises an outdoor fan, the bypass heat exchanger and the outdoor heat exchanger share one outdoor fan, and the outdoor fan is configured to make the wind blown by the outdoor fan pass through the bypass heat exchanger first and then pass through the outdoor heat exchanger.

[0011] In another aspect, the present application provides a control method of an air conditioner as described in any of the above, the control method comprising:

[0012] in response to the air conditioner starting, obtaining the indoor environment temperature to obtain a first temperature;

[0013] determining whether the first temperature meets a preset condition;

[0014] if yes, controlling the indoor heat exchanger and the bypass heat exchanger to work simultaneously;

[0015] the preset condition comprises:

[0016] when the air conditioner is in cooling operation, the first temperature is greater than the set temperature of the air conditioner and less than a first preset temperature; or

[0017] when the air conditioner is in heating operation, the first temperature is greater than a second preset temperature and less than the set temperature of the air conditioner.

[0018] Optionally, the control method further comprises:

[0019] obtaining the indoor environment temperature to obtain a second temperature;

[0020] in response to the second temperature meeting a temperature reaching condition, closing the indoor heat exchanger, controlling the air conditioner to not blow or blow non-heat exchange air, and simultaneously controlling the bypass heat exchanger to work.

[0021] Optionally, the temperature reaching condition comprises:

[0022] when the air conditioner is in cooling operation, the second temperature is less than the set temperature of the air conditioner; or

[0023] when the air conditioner is in heating operation, the second temperature is greater than the set temperature of the air conditioner.

[0024] Optionally, the control method further comprises:

[0025] in response to the air conditioner starting, closing the bypass heat exchanger, controlling the indoor heat exchanger to work, and simultaneously controlling the air conditioner to blow heat exchange air.

[0026] In the air conditioner of the present application, since the air conditioner comprises a bypass heat exchanger arranged outdoors, and the bypass heat exchanger can be used for heating or cooling, when the indoor ambient temperature approaches the set temperature, the indoor heat exchanger and the bypass heat exchanger can work simultaneously, and under the shunting effect of the bypass heat exchanger, the refrigerant flow through the indoor heat exchanger can be significantly reduced, thereby the cooling capacity of the air conditioner can be significantly reduced, and the phenomenon of temperature reaching stop can be effectively avoided or delayed. Therefore, the present application can achieve the purpose of air conditioner temperature reaching without stopping, avoid the frequent start and stop of the compressor, and avoid the problem of large noise caused by the discontinuity of the sound emitted by the air conditioner, improve the service life of the compressor and the reliability and safety of the air conditioner, reduce the indoor ambient temperature fluctuation, avoid the indoor ambient temperature from being cold and hot, and improve the user experience.

[0027] Further, when the air conditioner meets the temperature reaching condition, the indoor heat exchanger is closed and the bypass heat exchanger is opened; the indoor unit can stop cooling or heating the indoor environment, but the compressor does not stop, so that the temperature reaching without stopping can be completely realized, the service life of the compressor can be further improved, and the noise pollution caused by the start and stop of the compressor can be further reduced.

[0028] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when considered in conjunction with the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are shown by way of example and not limitation. The same reference numbers in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0030] Figure 1 is a schematic working principle diagram of an air conditioner according to an embodiment of the present application in cooling mode;

[0031] Figure 2 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present application;

[0032] Figure 3 is a schematic flow chart of a control method of an air conditioner according to another embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be described with reference to Figures 1 to 3An air conditioner and a control method thereof according to an embodiment of the present application will be described. In the description of the embodiments, it is to be understood that the terms "first", "second", "third" and the like are merely used to describe various configurations, and do not imply or imply relative importance or a specific number of the technical features indicated. Thus, the features defined as "first", "second", "third" can explicitly or implicitly include at least one of the features, i.e. one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited. When a certain feature "includes or includes" a certain or certain features, unless otherwise specifically described, it indicates that other features are not excluded and can further include other features.

[0034] Unless otherwise explicitly specified and limited, the terms "control method", "installation", "connected", "connected", "fixed", "coupled" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0035] In the description of the embodiments, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Figure 1 is a schematic working principle diagram of an air conditioner according to an embodiment of the present application in a cooling mode, and in conjunction with Figures 2-3 The present application provides an air conditioner, which comprises an indoor heat exchanger 11, a flow path control device 12 and a bypass heat exchanger 24.

[0037] The bypass heat exchanger 24 is located outdoors. The indoor heat exchanger 11 and the bypass heat exchanger 24 are both used for cooling or heating. The flow path control device is configured to make the indoor heat exchanger and the bypass heat exchanger work at the same time, or only make the indoor heat exchanger work.

[0038] In the embodiment, the working process of the air conditioner is as follows: when the air conditioner is used normally to cool or heat, the bypass heat exchanger 24 is closed under the action of the flow path control device, and only the indoor heat exchanger works, so that the heating or cooling capacity of the indoor unit of the air conditioner is strong; when the indoor environment temperature approaches the set temperature of the air conditioner, in order to avoid the indoor temperature reaching the set temperature, the indoor heat exchanger and the bypass heat exchanger work simultaneously under the action of the flow path control device, and the bypass heat exchanger can significantly weaken the cooling or heating capacity of the indoor unit of the air conditioner, so that the indoor environment temperature can be prevented from reaching the set temperature rapidly.

[0039] In summary, since the air conditioner comprises the bypass heat exchanger arranged outdoors, and the bypass heat exchanger can be used for heating or cooling, when the indoor environment temperature approaches the set temperature, the indoor heat exchanger and the bypass heat exchanger work simultaneously, and under the shunting action of the bypass heat exchanger, the refrigerant flow through the indoor heat exchanger can be significantly reduced, so that the cooling capacity of the air conditioner can be significantly reduced, and the phenomenon of reaching the set temperature and stopping can be effectively avoided or delayed. Therefore, the air conditioner can achieve the purpose of not stopping when reaching the set temperature, the compressor can be prevented from frequently starting and stopping, the problem of loud noise caused by the discontinuity of the sound emitted by the air conditioner can be avoided, the service life of the compressor and the reliability and safety of the air conditioner can be improved, the indoor environment temperature fluctuation can be reduced, the indoor environment temperature can be prevented from being cold and hot alternately, and the user experience can be improved.

[0040] In some optional embodiments of the present application, the flow path control device is further configured to adjust the refrigerant flow through the indoor heat exchanger and the bypass heat exchanger when the indoor heat exchanger and the bypass heat exchanger work simultaneously.

[0041] In the embodiment, when the indoor heat exchanger and the bypass heat exchanger work simultaneously, the refrigerant flow through the indoor heat exchanger and the bypass heat exchanger can be adjusted according to the indoor environment temperature; specifically, if the indoor environment temperature has not reached the reaching temperature condition, at this time, the refrigerant flow through the indoor heat exchanger and the bypass heat exchanger can be adjusted according to the difference between the outdoor environment temperature and the set temperature, so that the refrigerant flow through the indoor heat exchanger is positively correlated with the difference, and the refrigerant flow through the bypass heat exchanger is negatively correlated with the difference. That is, the smaller the deviation between the outdoor environment temperature and the set temperature, the smaller the refrigerant flow through the indoor heat exchanger, and the larger the refrigerant flow through the bypass heat exchanger.

[0042] In the embodiment, through the above arrangement, the cooling or heating capacity of the indoor unit can be more scientifically adjusted, and the cooling or heating capacity of the indoor unit can be ensured while avoiding reaching the set temperature, so that the user experience can be improved.

[0043] In some optional embodiments of the present application, the flow path control device is further configured to only make the bypass heat exchanger work.

[0044] In the present embodiment, through the above arrangement, when the air conditioner meets the temperature reaching condition, the indoor heat exchanger is closed and the bypass heat exchanger is opened, so that the refrigerant only flows through the bypass heat exchanger; the indoor unit can stop cooling or heating the indoor environment, but the compressor does not stop, so that the temperature reaching without stopping can be completely realized, the service life of the compressor can be further improved, and the noise pollution caused by the start and stop of the compressor can be further reduced.

[0045] As shown in Figure 1 In some alternative embodiments of the present application, the indoor heat exchanger and the bypass heat exchanger are arranged in parallel. In some alternative embodiments, the indoor heat exchanger and the bypass heat exchanger are arranged in series. However, when arranged in series, the design of the refrigerant flow path system is more complex and the manufacturing cost is high. Therefore, the parallel arrangement has the advantages of simple design of the refrigerant flow path system and low manufacturing cost.

[0046] In some alternative embodiments of the present application, the flow path control device 12 includes two electronic expansion valves, the indoor heat exchanger 11 is connected in series with the electronic expansion valves, and the bypass heat exchanger 24 is connected in series with the electronic expansion valves.

[0047] Specifically, one electronic expansion valve is configured to adjust the refrigerant flow through the indoor heat exchanger 11 by controlling the opening degree; and the other electronic expansion valve is configured to adjust the refrigerant flow through the bypass heat exchanger 24 by controlling the opening degree. The electronic expansion valve can be controlled from closed to fully open, with one coil driving step as a unit. The two electronic expansion valves can be independently controlled. The refrigerant flow in the indoor heat exchanger 11 and the bypass heat exchanger 24 is controlled by the electronic expansion valve, so that the action is stable and reliable.

[0048] In some alternative embodiments of the present application, the flow path control device includes two electronic expansion valves, the indoor heat exchanger is connected in series with the electronic expansion valves, and the bypass heat exchanger 24 is connected in series with the electronic expansion valves.

[0049] Specifically, one electronic expansion valve is configured to adjust the refrigerant flow through the indoor heat exchanger 11 by controlling the opening degree; and the other electronic expansion valve is configured to adjust the refrigerant flow through the bypass heat exchanger 24 by controlling the opening degree. The electronic expansion valve can be controlled from closed to fully open, with one coil driving step as a unit. The two electronic expansion valves can be independently controlled. The refrigerant flow in the indoor heat exchanger 11 and the bypass heat exchanger 24 is controlled by the electronic expansion valve, so that the action is stable and reliable.

[0050] In some alternative embodiments of the present application, the flow path control device includes a three-way valve, the three-way valve has three openings, one opening is in communication with the outdoor heat exchanger, one opening is in communication with the indoor heat exchanger, and the other opening is in communication with the bypass heat exchanger 24.

[0051] In some alternative embodiments of the present application, the air conditioner further includes an outdoor heat exchanger, and the outdoor heat exchanger is in thermal connection with the bypass heat exchanger.

[0052] Specifically, the outdoor heat exchanger and the bypass heat exchanger are arranged in the shell of the outdoor unit, and the outdoor heat exchanger and the bypass heat exchanger are arranged adjacently. Through the above arrangement, the assembly of the outdoor unit is facilitated, and the volume of the outdoor unit can be reduced.

[0053] In some optional embodiments of the present application, the air conditioner further comprises an outdoor fan, and the bypass heat exchanger and the outdoor heat exchanger share the outdoor fan, and the outdoor fan is configured to make the air blown by the outdoor fan pass through the bypass heat exchanger first and then pass through the outdoor heat exchanger.

[0054] Specifically, the outdoor fan is arranged in the shell of the outdoor unit. In the present embodiment, through the above arrangement, the assembly is facilitated, the volume of the outdoor unit is saved, and the production cost is reduced.

[0055] As Figure 1 In some optional embodiments of the present application, the air conditioner comprises an indoor unit 10 and an outdoor unit 20. The indoor unit 10 comprises an air outlet, an indoor fan 13 and an indoor heat exchanger 11. The outdoor unit comprises a compressor 23, an outdoor heat exchanger 21, a four-way valve 22, an outdoor fan and a bypass heat exchanger 24. The indoor heat exchanger 11 and the bypass heat exchanger 24 are arranged in parallel. The flow path control device 12 comprises two electronic shut-off valves, one of which is connected in series with the indoor heat exchanger 11, and the other of which is connected in series with the bypass heat exchanger 24.

[0056] Figure 2 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present application, which is described in combination with Figure 3 The present application further provides a control method of an air conditioner, wherein the air conditioner is the air conditioner according to any one of the above embodiments.

[0057] In the present embodiment, the control method of the air conditioner comprises the following steps:

[0058] Step S11: in response to the start of the air conditioner, the indoor ambient temperature is acquired to obtain a first temperature.

[0059] Step S12: it is judged whether the first temperature meets a preset condition.

[0060] Step S13: if yes, the indoor heat exchanger and the bypass heat exchanger are controlled to work simultaneously.

[0061] Specifically, after the start of the air conditioner, the indoor ambient temperature is acquired to obtain a first temperature after a preset time, it is judged whether the first temperature meets a preset condition, and if the preset condition is met, the indoor heat exchanger and the bypass heat exchanger are controlled to work simultaneously.

[0062] In the embodiment, when the indoor environment temperature is close to the set temperature, the indoor heat exchanger and the bypass heat exchanger can work simultaneously, and under the shunting effect of the bypass heat exchanger, the refrigerant flow rate flowing through the indoor heat exchanger can be significantly reduced, so that the refrigerating capacity of the air conditioner can be significantly reduced, and the phenomenon of temperature reaching stop can be effectively avoided or delayed. Therefore, the air conditioner can achieve the purpose of not stopping when the temperature reaches, the frequent start and stop of the compressor is avoided, the problem of loud noise caused by the discontinuity of the sound emitted by the air conditioner is avoided, the service life of the compressor and the reliability and safety of the air conditioner are improved, the indoor environment temperature fluctuation is reduced, the indoor environment temperature is avoided to be cold and hot alternately, and the user experience is improved. In addition, the control method has the beneficial effects of simple control program and easy execution.

[0063] In some optional embodiments of the present application, the preset condition comprises: when the air conditioner is in cooling operation, the first temperature is greater than the set temperature of the air conditioner and less than a first preset temperature.

[0064] Specifically: the first preset temperature is greater than the set temperature. When the air conditioner is in cooling operation, the set temperature < the first temperature < the first preset temperature, it is determined that the first temperature meets the preset condition. When the air conditioner is in cooling operation, the first temperature is greater than or equal to the first preset temperature, it is determined that the first temperature does not meet the preset condition.

[0065] Further, in some optional embodiments of the present application, the first preset temperature = the set temperature + 1℃. In some alternative embodiments, the first preset temperature = the set temperature + 2℃.

[0066] In some optional embodiments of the present application, the preset condition comprises: when the air conditioner is in heating operation, the first temperature is greater than a second preset temperature and less than the set temperature of the air conditioner.

[0067] Specifically: the second preset temperature is less than the set temperature. When the air conditioner is in heating operation, the second preset temperature < the first temperature < the set temperature, it is determined that the first temperature meets the preset condition. When the air conditioner is in cooling operation, the first temperature is less than or equal to the second preset temperature, it is determined that the first temperature does not meet the preset condition.

[0068] Further, in some optional embodiments of the present application, the second preset temperature = the set temperature - 1℃. In some alternative embodiments, the second preset temperature = the set temperature - 2℃.

[0069] In some optional embodiments of the present application, the control method further comprises the steps of: obtaining the indoor environment temperature to obtain a second temperature; in response to the second temperature meeting the temperature reaching condition, closing the indoor heat exchanger, controlling the air conditioner to not blow or blow non-heat exchange air, and simultaneously controlling the bypass heat exchanger to work.

[0070] In the embodiment, when the air conditioner meets the temperature reaching condition, the indoor heat exchanger is closed, the bypass heat exchanger is opened, and the refrigerant only flows through the bypass heat exchanger, so that the indoor unit stops refrigeration or heating for the indoor environment, but the compressor does not stop, thereby completely realizing the temperature reaching without stopping, further improving the service life of the compressor, and further reducing noise pollution caused by starting and stopping of the compressor.

[0071] In some optional embodiments of the application, the temperature reaching condition comprises that, when the air conditioner is in refrigeration operation, the second temperature is less than the set temperature of the air conditioner.

[0072] Preferably, the temperature reaching condition comprises that, when the air conditioner is in refrigeration operation, the second temperature is less than the third preset temperature. The third preset temperature is less than the set temperature. For example, the third preset temperature = the set temperature - 1℃, or the third preset temperature = the set temperature - 2℃.

[0073] In some optional embodiments of the application, when the air conditioner is in heating operation, the second temperature is greater than the set temperature of the air conditioner.

[0074] Preferably, the temperature reaching condition comprises that, when the air conditioner is in heating operation, the second temperature is greater than the fourth preset temperature. The fourth preset temperature is greater than the set temperature. For example, the fourth preset temperature = the set temperature + 1℃, or the fourth preset temperature = the set temperature + 2℃.

[0075] In some optional embodiments of the application, the control method further comprises the following steps: in response to starting of the air conditioner, closing the bypass heat exchanger, controlling the indoor heat exchanger to work, and simultaneously discharging heat exchange air of the air conditioner.

[0076] That is, when the air conditioner is in normal refrigeration or heating operation, the refrigerant only flows through the outdoor heat exchanger and does not flow through the bypass heat exchanger.

[0077] As shown in the figure, in some optional embodiments of the application, the control method of the air conditioner comprises the following steps: Figure 3

[0078] Step S1, starting the air conditioner.

[0079] Step S2, closing the bypass heat exchanger, controlling the indoor heat exchanger to work, and simultaneously discharging heat exchange air of the air conditioner.

[0080] Step S3, obtaining the indoor environment temperature to obtain a first temperature.

[0081] Step S4, judging whether the first temperature meets a preset condition.

[0082] Step S5, if yes, controlling the indoor heat exchanger and the bypass heat exchanger to work at the same time; if no, returning to step S3. ​

[0083] Step S6, obtaining the indoor environment temperature to obtain a second temperature.

[0084] Step S7, judging whether the second temperature meets a temperature reaching condition.

[0085] Step S8, if yes, closing the indoor heat exchanger, controlling the air conditioner to not blow air or to blow non-heat exchange air, and controlling the bypass heat exchanger to work; if no, returning to step S6.

[0086] In the embodiment, the preset condition comprises: when the air conditioner is in cooling operation, the first temperature is greater than a set temperature of the air conditioner and less than a first preset temperature; and when the air conditioner is in heating operation, the first temperature is greater than a second preset temperature and less than the set temperature of the air conditioner.

[0087] The temperature reaching condition comprises: when the air conditioner is in cooling operation, the second temperature is less than the set temperature of the air conditioner; and when the air conditioner is in heating operation, the second temperature is greater than the set temperature of the air conditioner.

[0088] At this point, those skilled in the art should recognize that, although the present application has been shown and described in detail herein with respect to a number of exemplary embodiments, many other variations and modifications can be determined or deduced directly from the disclosure of the present application in accordance with the principles of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all such other variations or modifications.

Claims

1. A control method of an air conditioner including an indoor heat exchanger, comprising: The air conditioner further comprises a flow path control device and a bypass heat exchanger located outdoors, and the indoor heat exchanger and the bypass heat exchanger are used for refrigeration or heating; ​ The flow path control device is configured to operate the indoor heat exchanger and the bypass heat exchanger simultaneously or only operate the indoor heat exchanger; The air conditioner further comprises an outdoor fan, and the bypass heat exchanger and the outdoor heat exchanger share the outdoor fan, and the outdoor fan is configured to make the air blown by the outdoor fan pass through the bypass heat exchanger first and then pass through the outdoor heat exchanger; The control method comprises: In response to starting of the air conditioner, obtaining the indoor environment temperature to obtain a first temperature; Determining whether the first temperature meets a preset condition; If yes, controlling the indoor heat exchanger and the bypass heat exchanger to operate simultaneously; The preset condition comprises: When the air conditioner is in refrigeration operation, the first temperature is greater than the set temperature of the air conditioner and less than a first preset temperature; or When the air conditioner is in heating operation, the first temperature is greater than a second preset temperature and less than the set temperature of the air conditioner.

2. The control method of the air conditioner according to claim 1, wherein: The flow path control device is further configured to adjust the refrigerant flow rate through the indoor heat exchanger and the bypass heat exchanger when the indoor heat exchanger and the bypass heat exchanger operate simultaneously.

3. The control method of the air conditioner according to claim 1, wherein: The flow path control device is further configured to only operate the bypass heat exchanger.

4. The control method of the air conditioner according to claim 1, wherein: The indoor heat exchanger and the bypass heat exchanger are arranged in parallel.

5. The control method of the air conditioner according to claim 1, wherein: The air conditioner further comprises an outdoor heat exchanger, and the outdoor heat exchanger is in thermal connection with the bypass heat exchanger.

6. The control method according to claim 1, characterized by: The control method further comprises: Obtaining the indoor environment temperature to obtain a second temperature; In response to the second temperature meeting a temperature reaching condition, closing the indoor heat exchanger, controlling the air conditioner to not blow air or blow non-heat exchange air, and controlling the bypass heat exchanger to operate.

7. The control method according to claim 6, characterized by The temperature reaching condition comprises: When the air conditioner is in refrigeration operation, the second temperature is less than the set temperature of the air conditioner; or When the air conditioner is in heating operation, the second temperature is greater than the set temperature of the air conditioner.

8. The control method according to claim 1, characterized by, The control method further comprises: In response to starting of the air conditioner, closing the bypass heat exchanger, controlling the indoor heat exchanger to operate, and controlling the air conditioner to blow heat exchange air.

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