Air conditioner, its control method, and readable storage medium

Abstract

The present invention discloses an air conditioner, a control method thereof, and a readable storage medium. The control method of the air conditioner includes: when the air conditioner is in the heating mode, adjusting the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet; controlling the first air deflector to rotate a first preset angle from the closed position, and controlling the second air deflector to rotate a second preset angle from the closed position, wherein the first preset angle is greater than the second preset angle. Through throttling by the first throttle valve, this solution enables the air conditioner to blow out airflows at different temperatures, meeting the temperature requirements of different body parts of the user, thereby improving the comfort of the user.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to an air conditioner, a control method thereof, and a readable storage medium. Background Art

[0002] In the prior art, when the air conditioner operates in the heating function, different body parts of the user require different comfortable temperatures. For example, the user's feet need warmer air than the face to feel comfortable, but since the temperature of the hot air blown by the air conditioner is single, the user's comfort level is reduced. Summary of the Invention

[0003] The main object of the present invention is to provide an air conditioner, aiming to solve the problem that the single temperature of the hot air blown by the air conditioner reduces the user's comfort level.

[0004] To achieve the above object, the present invention provides an air conditioner, which includes an outdoor unit and an indoor unit. The indoor unit includes: a housing, a first air duct and a second air duct are formed in the housing, the first air duct forms a first air inlet and a first air outlet on the housing, and the second air duct forms a second air inlet and a second air outlet on the housing; a first air guiding member, the first air guiding member is rotatably arranged on the housing to adjust the air outlet direction of the first air outlet; a second air guiding member, the second air guiding member is rotatably arranged on the housing to adjust the air outlet direction of the second air outlet; a first heat exchanger, the first heat exchanger is arranged in the first air duct; a second heat exchanger, the second heat exchanger is arranged in the second air duct; a first throttling valve, the first throttling valve is connected in series between the first heat exchanger and the second heat exchanger.

[0005] Further, the outdoor unit includes a four-way valve, a compressor, an outdoor heat exchanger and a gas-liquid separator. The D end of the four-way valve is communicated with the discharge port of the compressor, the C end of the four-way valve is communicated with the first end of the outdoor heat exchanger, the E end of the four-way valve is sequentially communicated with the first heat exchanger, the first throttling valve, the second heat exchanger, the gas-liquid separator and the second end of the outdoor heat exchanger, the gas-liquid separator is also communicated with the inlet of the liquid storage tank of the compressor, and the S end of the four-way valve is communicated with the inlet of the liquid storage tank of the compressor.

[0006] Further, the outdoor unit further includes: a switching valve, the gas-liquid separator is communicated with the inlet of the liquid storage tank of the compressor through the switching valve.

[0007] Further, the outdoor unit further includes: a second throttling valve, the gas-liquid separator is communicated with the second end of the outdoor heat exchanger through the second throttling valve.

[0008] To achieve the above object, the present invention further provides a control method for an air conditioner, which is applied to the air conditioner described in any one of the above, and the control method of the air conditioner includes:

[0009] When the air conditioner is in the heating mode, adjust the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet;

[0010] Control the first air guide member to rotate a first preset angle from the closed position, and control the second air guide member to rotate a second preset angle from the closed position, wherein the first preset angle is greater than the second preset angle.

[0011] Further, the step of adjusting the opening degree of the first throttle valve includes:

[0012] Obtain the temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger;

[0013] Obtain the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger

[0014] Adjust the opening degree of the first throttle valve according to the temperature difference and the target temperature difference.

[0015] Further, the step of adjusting the opening degree of the first throttle valve according to the temperature difference and the target temperature difference includes:

[0016] When the temperature difference is greater than the target temperature difference, increase the opening degree of the first throttle valve;

[0017] When the temperature difference is less than the target temperature difference, decrease the opening degree of the first throttle valve.

[0018] Further, the step of obtaining the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger includes:

[0019] Obtain the current indoor temperature and the outdoor coil temperature of the outdoor unit;

[0020] Obtain corresponding first reference value, second reference value and third reference value according to the first coil temperature, the current indoor temperature and the outdoor coil temperature respectively;

[0021] Obtain the target temperature difference according to the first reference value, the second reference value and the third reference value.

[0022] Further, the step of adjusting the opening degree of the first throttle valve includes:

[0023] Obtain the current indoor temperature;

[0024] Obtain a first target temperature range according to the current indoor temperature;

[0025] Adjust the opening degree of the first throttle valve according to the first target temperature range and the second coil temperature, so that the second coil temperature falls within the first target temperature range.

[0026] Further, the step of adjusting the opening degree of the first throttle valve according to the first target temperature range and the second coil temperature includes:

[0027] When the second coil temperature is less than the minimum temperature value in the first target temperature range, increase the opening degree of the first throttle valve;

[0028] When the second coil temperature is greater than the maximum temperature value in the first target temperature range, decrease the opening degree of the first throttle valve.

[0029] Further, the step of increasing the opening degree of the first throttle valve when the second coil temperature is less than the minimum temperature value in the first target temperature range includes:

[0030] When the second coil temperature is less than the minimum temperature value in the first target temperature range, obtain the difference between the second coil temperature and the minimum temperature value, and determine the adjustment period and the opening degree to be adjusted of the first throttle valve according to the difference. Wherein, the smaller the difference, the larger the adjustment period, and the smaller the opening degree to be adjusted;

[0031] At the beginning of the current adjustment period, obtain the historical opening degree of the first throttle valve in the previous adjustment period, and use the sum of the historical opening degree and the opening degree to be adjusted as the opening degree of the first throttle valve in the current adjustment period;

[0032] After the current adjustment period ends, return to execute the step of obtaining the difference between the second coil temperature and the minimum temperature value when the second coil temperature is less than the minimum temperature value in the first target temperature range, and determining the adjustment period and the opening degree to be adjusted of the first throttle valve according to the difference.

[0033] To achieve the above object, the present invention also provides a control method for an air conditioner, and the control method for the air conditioner includes:

[0034] When the air conditioner is in the heating mode, adjust the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet;

[0035] Control the first air guiding member to rotate a first preset angle from the closed position, and control the second air guiding member to rotate a second preset angle from the closed position, wherein the first preset angle is greater than the second preset angle;

[0036] Obtain the current outdoor temperature and the outdoor coil temperature of the outdoor heat exchanger;

[0037] Obtain the second target temperature range according to the current outdoor temperature;

[0038] Adjust the opening degree of the second throttle valve according to the second target temperature range and the outdoor coil temperature, so that the outdoor coil temperature falls within the second target temperature range.

[0039] Further, the step of adjusting the opening degree of the second throttle valve according to the second target temperature range and the outdoor coil temperature includes:

[0040] When the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, increase the opening degree of the second throttle valve;

[0041] When the outdoor coil temperature is greater than the maximum temperature value in the second target temperature range, decrease the opening degree of the second throttle valve.

[0042] Further, the step of increasing the opening degree of the second throttle valve when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range further includes:

[0043] When the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, obtain the difference between the outdoor coil temperature and the minimum temperature value, and determine the adjustment period and the opening degree to be adjusted of the second throttle valve according to the difference. Wherein, the smaller the difference, the larger the adjustment period, and the smaller the opening degree to be adjusted;

[0044] At the beginning of the current adjustment period, obtain the historical opening degree of the second throttle valve in the previous adjustment period, and use the sum of the historical opening degree and the opening degree to be adjusted as the opening degree of the second throttle valve in the current adjustment period;

[0045] After the current adjustment period ends, return to execute the step of obtaining the difference between the outdoor coil temperature and the minimum temperature value when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, and determining the adjustment period and the opening degree to be adjusted of the second throttle valve according to the difference.

[0046] Further, the control method further includes:

[0047] When the air conditioner operates in the heating mode, control the switching valve to open;

[0048] When the air conditioner operates in the cooling mode, control the switching valve to close, and control the first throttle valve and the second throttle valve to open to a preset opening degree.

[0049] To achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner described in any one of the above are implemented.

[0050] To achieve the above object, the present invention further provides a readable 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 described in any one of the above are implemented.

[0051] In the technical solution of the present invention, a first air duct and a second air duct are formed in the housing; a first heat exchanger is disposed in the first air duct, a second heat exchanger is disposed in the second air duct, and the first throttle valve is connected in series between the first heat exchanger and the second heat exchanger. The first throttle valve throttles the refrigerant flowing out of the first heat exchanger and about to flow into the second heat exchanger, so that the heat exchange amount of the second heat exchanger with the air flow is less than the heat exchange amount of the first heat exchanger with the air flow, thereby enabling the indoor unit to blow out air flows at two different temperatures, meeting the needs of different body parts of the user for different temperatures, and improving the thermal comfort of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic structural diagram of an embodiment of the indoor unit of the present invention;

[0053] Figure 2 It is a schematic framework diagram of an embodiment of the air conditioner of the present invention;

[0054] Figure 3 It is a schematic cross-sectional structural diagram of another embodiment of the indoor unit of the present invention;

[0055] Figure 4 It is a schematic structural diagram of still another embodiment of the indoor unit of the present invention;

[0056] Figure 5 It is a schematic structural diagram of yet another embodiment of the indoor unit of the present invention;

[0057] Figure 6 It is a schematic diagram of the device structure of the hardware operating environment involved in the embodiment solution of the present invention;

[0058] Figure 7 It is a schematic flowchart of an embodiment of the control method of the air conditioner of the present invention;

[0059] Figure 8 It is a specific flowchart of an embodiment of step 10 of the control method of the air conditioner of the present invention;

[0060] Figure 9 It is a schematic diagram of the specific process of another embodiment of step 10 of the control method of the air conditioner of the present invention;

[0061] Figure 10 It is a schematic diagram of the specific process of one embodiment of step 131 of the control method of the air conditioner of the present invention;

[0062] Figure 11 It is a schematic diagram of the process of another embodiment of the control method of the air conditioner of the present invention;

[0063] Figure 12 It is a schematic diagram of the specific process of one embodiment of step 71 of the control method of the air conditioner of the present invention.

[0064] The realization, functional characteristics and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific Embodiments

[0065] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0066] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0067] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0068] Please refer to Figure 1-2, an indoor unit 10 proposed by the present invention, the indoor unit 10 includes: a housing 110, a first air duct 111 and a second air duct 112 are formed inside the housing 110; a first heat exchanger 120, the first heat exchanger 120 is disposed in the first air duct 111; a second heat exchanger 130, the second heat exchanger 130 is disposed in the second air duct 112; a first throttle valve 140 (see Figure 2 ), the first throttle valve 140 is connected in series between the first heat exchanger 120 and the second heat exchanger 130.

[0069] In this embodiment, the first air duct 111 and the second air duct 112 inside the housing 110 can be completely blocked to form two independent air ducts, or the first air duct 111 and the second air duct 112 can be two interconnected air ducts. The first air duct 111 forms a first air inlet 1111 and a first air outlet 1112 on the housing 110. The second air duct 112 forms a second air inlet 1121 and a second air outlet 1122 on the housing 110. The first air inlet 1111 and the second air inlet 1121 can be arranged at intervals and not connected, or can be connected; the first air outlet 1112 and the second air outlet 1122 are arranged at intervals and not connected. The indoor unit 10 further includes a first air guiding member 121 and a second air guiding member 131. The first air guiding member 121 is rotatably disposed on the housing 110 for adjusting the air outlet direction of the first air outlet 1112. The second air guiding member 131 is rotatably disposed on the housing 110 to adjust the air outlet direction of the second air outlet 1122. The first heat exchanger 120 is disposed in the first air duct 111 to exchange heat with the air flow in the first air duct 111. The second heat exchanger 130 is disposed in the second air duct 112 to exchange heat with the air flow in the second air duct 112. Further, the indoor unit 10 further includes: a first fan 122, the first fan 122 is disposed in the first air duct 111, and the first heat exchanger 120 is located between the first air inlet 1111 and the first fan 122; and a second fan 132, the second fan 132 is disposed in the second air duct 112, and the second heat exchanger 130 is located between the second air inlet 1121 and the second fan 132.

[0070] When the indoor unit 10 is turned on in the heating mode, the first blower 122 operates to introduce indoor air from the first air inlet 1111 into the first air duct 111. The indoor air entering from the first air inlet 1111 exchanges heat through the first heat exchanger 120, then flows through the first blower 122 and returns to the room from the first air outlet 1112. The first air guiding member 121 adjusts the air outlet direction of the first air outlet 1112. Similarly, the second blower 132 operates to introduce indoor air from the second air inlet 1121 into the second air duct 112. The indoor air entering from the second air inlet 1121 exchanges heat through the second heat exchanger 130, then flows through the second blower 132 and returns to the room from the second air outlet 1122. The second air guiding member 131 adjusts the air outlet direction of the second air outlet 1122.

[0071] The key point of this embodiment is that a first throttle valve 140 is connected in series between the first heat exchanger 120 and the second heat exchanger 130. In the heating mode, the refrigerant flows through the first heat exchanger 120, the first throttle valve 140, and the second heat exchanger 130 in sequence. The first throttle valve 140 throttles the refrigerant flowing into the second heat exchanger 130, so that the temperature of the refrigerant flowing through the second heat exchanger 130 is lower than that of the refrigerant flowing through the first heat exchanger 120. As a result, the temperature of the air flow flowing out from the second air outlet 1122 is lower than that of the air flow flowing out from the first air outlet 1112. Further, the opening angle of the second air guiding member 131 is adjusted to be smaller than that of the first air guiding member 121, so that the lower-temperature air flow blown out from the second air outlet 1122 is higher than the higher-temperature air flow blown out from the first air outlet 1112. In this way, the lower-temperature air flow blown out from the second air outlet 1122 blows towards the upper half of the human body, and the higher-temperature air flow blown out from the first air outlet 1112 blows towards the feet of the human body. The temperature of the blown air flow gradually decreases from bottom to top, and the temperature levels are distinct, thus meeting the different temperature requirements of different body parts of the user and improving the comfort of the user. It can be understood that the refrigerant may also flow through the second heat exchanger 130 first and then through the first heat exchanger 120. The situation of the cooling mode can also be reasonably deduced through the above heating mode.

[0072] In summary, in this embodiment, a first air duct 111 and a second air duct 112 are formed in the housing 110; a first heat exchanger 120 is disposed in the first air duct 111, a second heat exchanger 130 is disposed in the second air duct 112, and the first throttle valve 140 is connected in series between the first heat exchanger 120 and the second heat exchanger 130. The first throttle valve 140 throttles the refrigerant flowing out of the first heat exchanger 120 and about to flow into the second heat exchanger 130, so that the heat exchange amount of the second heat exchanger 130 for the air flow is less than the heat exchange amount of the first heat exchanger 120 for the air flow, thereby enabling the indoor unit 10 to blow out air flows at two different temperatures, meeting the requirements of different body parts of the user for different temperatures, and improving the thermal comfort of the user.

[0073] Please refer to Figure 1 , further, a first air outlet section is formed between the first heat exchanger 120 and the first air outlet 1112; a second air outlet section is formed between the second heat exchanger 130 and the second air outlet 1122. In the first air duct 111 and the second air duct 112, at least the first air outlet section and the second air outlet section are separated from each other.

[0074] In this embodiment, since the air flow between the first heat exchanger 120 and the first air outlet 1112 is the air flow after heat exchange by the first heat exchanger 120, and the air flow between the second heat exchanger 130 and the second air outlet 1122 is the air flow after heat exchange by the second heat exchanger 130, and since the heat exchange amounts of the first heat exchanger 120 and the second heat exchanger 130 for the air flow are different, in order to avoid the mixing of the two air flows after heat exchange, the air duct part between the first heat exchanger 120 and the first air outlet 1112 is defined as the first air outlet section, the air duct part between the second heat exchanger 130 and the second air outlet 1122 is defined as the second air outlet section, and the first air outlet section and the second air outlet section are separated from each other, thereby blocking the two air flows after heat exchange, so that the air flows blown out from the first air outlet 1112 and the second air outlet 1122 have an obvious temperature difference, thus meeting the temperature requirements of different body parts of the user. It can be understood that the first air duct 111 and the second air duct 112 can also be completely separated, so as to separate the two air flows in different air ducts before and after heat exchange.

[0075] Please refer to Figure 1 , further, the housing 110 includes a front panel 113, a front frame 114 and a chassis 115. The front panel 113 is disposed on the front frame 114, and the chassis 115 is disposed on a side of the front frame 114 away from the front panel 113. The second heat exchanger 130 is located between the front panel 113 and the first heat exchanger 120, and the first heat exchanger 120 is located between the second heat exchanger 130 and the chassis 115.

[0076] In this embodiment, the second heat exchanger 130 is located between the panel 113 and the first heat exchanger 120, and the first heat exchanger 120 is located between the second heat exchanger 130 and the chassis 115. That is, the panel 113, the second heat exchanger 130, the first heat exchanger 120, and the chassis 115 are arranged in sequence. After the chassis 115 is installed on an external fixture, the first heat exchanger 120 and the second heat exchanger 130 are successively away from the chassis 115. The first air inlet 1111 is located above the first heat exchanger 120, the first air outlet 1112 is located below the first heat exchanger 120, the second air inlet 1121 is located above the second heat exchanger 130, the second air outlet 1122 is located below the second heat exchanger 130, and the first air outlet 1112 is closer to the chassis 115 than the second air outlet 1122. Thus, when air is discharged, the first air outlet 1112 discharges air to a lower area such as the user's feet, and the second air outlet 1122 discharges air to a higher area such as the user's upper body. The airflows discharged from the first air outlet 1112 and the second air outlet 1122 have less intersection, so that there is an obvious temperature difference in the airflows blown to different parts of the user, improving the user's comfort.

[0077] Please refer to Figure 1 , further, the housing 110 further includes: a first volute 116, the first volute 116 is disposed on the chassis 115; a first volute tongue 117, the first volute tongue 117 is disposed in the front frame 114, and a first air outlet section is formed between the first volute 116 and the first volute tongue 117; a second volute 118, the second volute 118 is disposed in the front frame 114 and is located on a side of the first volute tongue 117 away from the first volute 116; a second volute tongue 119, the second volute tongue 119 is disposed in the front frame 114 and is located between the second volute 118 and the panel 113, and a second air outlet section is formed between the second volute 118 and the second volute tongue 119.

[0078] In this embodiment, by disposing the first volute 116 on the chassis 115 and forming the first volute tongue 117 in the front frame 114, the first air outlet section is formed by the first volute 116 and the first volute tongue 117, and by disposing the second volute 118 and the second volute tongue 119 in the front frame 114, the second air outlet section is formed by the second volute 118 and the second volute tongue 119, so as to realize the mutual partition of the first air outlet section and the second air outlet section and avoid the mixing of the airflows in the first air outlet section and the second air outlet section.

[0079] Please refer toFigure 3 When rapid heating or cooling is required, both the first air guiding member 121 and the second air guiding member 131 guide air downward to achieve rapid cooling or heating; please refer to Figure 4 When different parts of the user require different air temperatures, the first air guiding member 121 guides air downward to meet the high temperature requirements of the lower body of the user, such as the feet, and the second air guiding member 131 guides air obliquely downward or horizontally to meet the lower temperature requirements of the upper body of the user, such as the face; please refer to Figure 5 In the anti-direct-blow mode, both the first air guiding member 121 and the second air guiding member 131 guide air horizontally to directly blow hot air to the user.

[0080] Please refer to Figure 2 To achieve the above object, the present invention further provides an air conditioner 100, including the indoor unit 10 as described above. The air conditioner 100 further includes an outdoor unit 20, and the outdoor unit 20 is in communication with both the first heat exchanger 120 and the second heat exchanger 130. Specifically, the outdoor unit 20 includes a four-way valve 21, a compressor 22, and an outdoor heat exchanger 23. The D end of the four-way valve 21 is in communication with the discharge port of the compressor 22, the C end of the four-way valve 21 is in communication with the first end of the outdoor heat exchanger 23, the E end of the four-way valve 21 is sequentially in communication with the second end of the outdoor heat exchanger 23 through the first heat exchanger 120, the first throttle valve 140, and the second heat exchanger 130, and the S end of the four-way valve 21 is in communication with the inlet of the liquid storage tank 221 of the compressor 22.

[0081] In this embodiment, when the air conditioner 100 is in the heating mode, the refrigerant of the compressor 22 sequentially flows through the D end of the four-way valve 21, the E end of the four-way valve 21, the first heat exchanger 120, the first throttle valve 140, the second heat exchanger 130, the outdoor heat exchanger 23, and returns to the liquid storage tank 221 of the compressor 22 through the C end of the four-way valve 21 and the S end of the four-way valve 21, thereby forming a heating circuit and completing the heating cycle; when the air conditioner 100 is in the cooling mode, the refrigerant of the compressor 22 sequentially flows through the D end of the four-way valve 21, the C end of the four-way valve 21, the outdoor heat exchanger 23, the second heat exchanger 130, the first throttle valve 140, the first heat exchanger 120, and returns to the liquid storage tank 221 of the compressor 22 through the E end of the four-way valve 21 and the S end of the four-way valve 21, thereby forming a cooling circuit and completing the cooling cycle.

[0082] Furthermore, the outdoor unit 20 further includes: a gas-liquid separator 24. The second heat exchanger 130 is in communication with the inlet of the liquid storage tank 221 of the compressor 22 through the gas-liquid separator 24, and the second heat exchanger 130 is in communication with the second end of the outdoor heat exchanger 23 through the gas-liquid separator 24.

[0083] In this embodiment, by providing the gas-liquid separator 24, the second heat exchanger 130 is communicated with the inlet of the liquid storage tank 221 of the compressor 22 via the gas-liquid separator 24, and the second heat exchanger 130 is communicated with the second end of the outdoor heat exchanger 23 via the gas-liquid separator 24. In the heating mode, after the refrigerant flowing out of the second heat exchanger 130 is subjected to gas-liquid separation by the gas-liquid separator 24, part of the liquid refrigerant directly returns to the liquid storage tank 221, and the remaining refrigerant flows back to the liquid storage tank 221 via the outdoor heat exchanger 23, thus preventing the outdoor heat exchanger 23 from frosting too quickly.

[0084] Further, the outdoor unit 20 further includes: a switching valve 25, and the gas-liquid separator 24 is communicated with the inlet of the liquid storage tank 221 of the compressor 22 via the switching valve 25.

[0085] In this embodiment, by providing a switching valve 25 between the liquid storage tank 221 and the gas-liquid separator 24, the gas-liquid separator 24 is communicated with the inlet of the liquid storage tank 221 of the compressor 22 via the switching valve 25. In the heating mode, the switching valve 25 is opened to allow part of the liquid refrigerant to flow back to the liquid storage tank 221; in the cooling mode, the switching valve 25 is closed to prevent part of the liquid refrigerant from flowing back to the liquid storage tank 221, thereby increasing the amount of liquid refrigerant entering the second heat exchanger 130 and improving the heat exchange efficiency.

[0086] Further, the outdoor unit 20 further includes: a second throttling valve 26, and the gas-liquid separator 24 is communicated with the second end of the outdoor heat exchanger 23 via the second throttling valve 26.

[0087] In this embodiment, the second throttling valve 26 is provided between the outdoor heat exchanger 23 and the gas-liquid separator 24, and the gas-liquid separator 24 is communicated with the second end of the outdoor heat exchanger 23 via the second throttling valve 26. In the heating mode, by appropriately reducing the opening degree of the second throttling valve 26, the outdoor heat exchanger 23 is prevented from frosting too quickly. In the cooling mode, the first throttling valve 140 and the second throttling valve 26 can both be kept fully open, and the first throttling valve 140 and the second throttling valve 26 can be electronic expansion valves.

[0088] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the hardware operating environment of the terminal involved in the solution of the embodiment of the present invention.

[0089] The terminal in the embodiment of the present invention is an air conditioner or a server or a server cluster connected to the air conditioner. As Figure 6As shown in the figure, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), a remote control. Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally also be a storage device independent of the aforementioned processor 1001).

[0090] Those skilled in the art can understand that Figure 1 the structure of the terminal shown in the figure does not constitute a limitation on the terminal, and it may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0091] As Figure 6 shown in the figure, the memory 1005, as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a control program for the air conditioner.

[0092] In Figure 6 the terminal shown in the figure, the network interface 1004 is mainly used to connect to the background server and communicate with the background server for data; the user interface 1003 is mainly used to connect to the client (user side) and communicate with the client for data; and the processor 1001 may be used to call the control program for the air conditioner stored in the memory 1005 and perform the following operations:

[0093] When the air conditioner is in the heating mode, adjust the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet;

[0094] Control the first air guide member to rotate a first preset angle from the closed position, and control the second air guide member to rotate a second preset angle from the closed position, where the first preset angle is greater than the second preset angle.

[0095] Please refer to Figure 7 , based on the above air conditioner, the control method of the air conditioner of the present invention is proposed. In the first embodiment, the control method of the air conditioner includes the following steps:

[0096] Step S10, when the air conditioner is in the heating mode, adjust the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet;

[0097] Step S20, control the first air guiding member to rotate a first preset angle from the closed position, and control the second air guiding member to rotate a second preset angle from the closed position, where the first preset angle is greater than the second preset angle.

[0098] In this embodiment, when the air conditioner is in the heating mode, the refrigerant flows through the first heat exchanger, the first throttling valve, and the second heat exchanger in sequence. The opening degree of the first throttling valve is used to throttle the refrigerant flowing into the second heat exchanger, so that the temperature of the refrigerant flowing through the second heat exchanger is lower than the temperature of the refrigerant flowing through the first heat exchanger. As a result, the temperature of the air flow flowing out of the second air outlet is lower than the temperature of the air flow flowing out of the first air outlet. Then, control the first air guiding member to rotate a first preset angle from the closed position, and control the second air guiding member to rotate a second preset angle from the closed position, where the first preset angle is greater than the second preset angle. That is to say, the opening angle of the second air guiding member is smaller than that of the first air guiding member, so that the lower-temperature air flow blown out from the second air outlet is higher than the higher-temperature air flow blown out from the first air outlet. In this way, the lower-temperature air flow blown out from the second air outlet blows towards the upper half of the human body such as the face, and the higher-temperature air flow blown out from the first air outlet blows towards the lower half of the human body such as the feet. The temperature of the blown air flow gradually decreases from bottom to top, and the temperature levels are distinct, thus meeting the different temperature requirements of different body parts of the user and improving the comfort of the user. It can be immediately noted that in order to achieve the throttling effect, when throttling, the opening and closing of the first throttling valve is less than the maximum opening degree.

[0099] Please refer to Figure 8 Furthermore, based on the first embodiment of the above control method, in the second embodiment, the step of adjusting the opening degree of the first throttling valve includes:

[0100] Step S30, obtain the temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger;

[0101] Step S35, obtain the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger;

[0102] Step S40, adjust the opening degree of the first throttling valve according to the temperature difference and the target temperature difference.

[0103] Specifically, the step of adjusting the opening degree of the first throttling valve according to the temperature difference and the target temperature difference includes:

[0104] Step S41, when the temperature difference is greater than the target temperature difference, increase the opening degree of the first throttling valve;

[0105] Step S42: When the temperature difference is less than the target temperature difference, reduce the opening degree of the first throttle valve.

[0106] In this embodiment, before adjusting the opening degree of the first throttle valve, preset to obtain the temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger, and obtain the target temperature difference between the first coil temperature and the second coil temperature. The target temperature difference can be set according to the actual situation. For example, the target temperature difference can be 6 degrees. When the temperature difference is greater than the target temperature difference, it indicates that the temperature difference between the first coil temperature and the second coil temperature is too large, which will cause the temperature difference between the air flow blown out from the first air outlet and the air flow blown out from the second air outlet to be too large, resulting in discomfort for the user. Therefore, increase the opening degree of the first throttle valve, reduce the throttling effect of the first throttle valve, increase the second coil temperature, so that the temperature difference between the first coil temperature and the second coil temperature approaches the target temperature, and improve the comfort of the user; on the contrary, when the temperature difference is less than the target temperature difference, it indicates that the temperature difference between the first coil temperature and the second coil temperature is too small, which will cause the temperature difference between the air flow blown out from the first air outlet and the air flow blown out from the second air outlet to be too small, resulting in the user not being able to feel an obvious wind temperature difference value in different parts, thus causing discomfort for the user. Therefore, reduce the opening degree of the first throttle valve, increase the throttling effect of the first throttle valve, reduce the second coil temperature, so that the temperature difference between the first coil temperature and the second coil temperature approaches the target temperature, and improve the comfort of the user. It can be understood that when the temperature difference is equal to the target temperature difference, keep the opening degree of the first throttle valve unchanged.

[0107] Please refer to Figure 9 , further, based on the first embodiment of the above control method, in the third embodiment, the step of obtaining the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger includes:

[0108] Step S31: Obtain the current indoor temperature and the outdoor coil temperature of the outdoor unit;

[0109] Step S32: Obtain the corresponding first reference value, second reference value, and third reference value according to the first coil temperature, the current indoor temperature, and the outdoor coil temperature respectively;

[0110] Step S33: Obtain the target temperature difference according to the first reference value, the second reference value, and the third reference value.

[0111] In this embodiment, the target temperature difference represents the difference in the subcooling degrees of the refrigerant flowing through the first heat exchanger and the second heat exchanger. The subcooling degrees of the refrigerant flowing through the first heat exchanger and the second heat exchanger are affected by the temperature of the first coil, the current indoor temperature, and the temperature of the outdoor coil. The higher the temperature of the first coil, the higher the subcooling degree needs to be set, and the larger the target temperature will be; the higher the current indoor temperature, the higher the subcooling degree needs to be set, and the larger the target temperature will be; the higher the temperature of the outdoor coil, the higher the subcooling degree needs to be set, and the larger the target temperature will be. Therefore, the corresponding first reference value, second reference value, and third reference value are obtained according to the temperature of the first coil, the current indoor temperature, and the temperature of the outdoor coil respectively, and the target temperature difference is obtained according to the first reference value, second reference value, and third reference value. Specifically, the sum of the first reference value, second reference value, and third reference value is used as the target temperature, so as to obtain a more accurate target temperature. Since the target temperature comprehensively considers the magnitudes of the temperature of the first coil, the current indoor temperature, and the temperature of the outdoor coil, when adjusting the opening degree of the first throttle valve according to the target temperature, it can make the user more comfortable and also improve the overall operating efficiency of the air conditioning system.

[0112] Please refer to Figure 10 , further, based on the first embodiment of the above control method, in the fourth embodiment, the step of adjusting the opening degree of the first throttle valve includes:

[0113] Step S11, obtaining the current indoor temperature;

[0114] Step S12, obtaining the first target temperature range according to the current indoor temperature;

[0115] Step S13, adjusting the opening degree of the first throttle valve according to the first target temperature range and the temperature of the second coil, so that the temperature of the second coil falls within the first target temperature range.

[0116] Specifically, the step of adjusting the opening degree of the first throttle valve according to the first target temperature range and the temperature of the second coil includes:

[0117] Step S131, when the temperature of the second coil is less than the minimum temperature value in the first target temperature range, increasing the opening degree of the first throttle valve;

[0118] Step S132, when the temperature of the second coil is greater than the maximum temperature value in the first target temperature range, decreasing the opening degree of the first throttle valve.

[0119] In this embodiment, the first target temperature range, that is, the temperature range into which the second coil temperature is to fall, is obtained by acquiring the current indoor temperature and obtaining the first target temperature range according to the current indoor temperature. Specifically, since the second air outlet is to blow out air with a reduced temperature, the first target temperature range is set to a temperature range lower than the current indoor temperature. For example, to ensure that the second coil temperature T22 is X degrees lower than the current indoor temperature T1 and can fluctuate within a range of Y degrees, then (T1 - X) - Y ≤ T22 ≤ (T1 - X) + Y. For example, when X is 6, Y is 1, and the current indoor temperature is 30 degrees, it is necessary to ensure that the second coil temperature T22 is 6 degrees lower than the current indoor temperature of 30 degrees and can fluctuate within a range of 1 degree. That is, the first target temperature range corresponding to the second coil temperature T22 is 23 - 25 degrees, so as to ensure that the air flow temperature blown out by the second air outlet is lower than the indoor temperature and makes the user feel more comfortable.

[0120] Specifically, taking the above example as an illustration, when the second coil temperature is less than the minimum temperature value in the first target temperature range, such as 23 degrees, it indicates that the second coil temperature is too low, so the opening degree of the first throttle valve is increased to increase the second coil temperature, thereby increasing the air flow temperature of the second air outlet. On the contrary, when the second coil temperature is greater than the maximum temperature value in the first target temperature range, such as 25 degrees, it indicates that the second coil temperature is too high, and the difference between the air outlet temperature of the second air outlet and the air outlet temperature of the first air outlet is not significant. Therefore, it is necessary to reduce the opening degree of the first throttle valve to reduce the second coil temperature, thereby reducing the air flow temperature of the second air outlet. By repeatedly executing step S131 and step S132, the second coil temperature is made to fall within the first target temperature range.

[0121] Please refer to Figure 11 , further, based on the 4th embodiment of the above control method, in the 5th embodiment, the step of increasing the opening degree of the first throttle valve when the second coil temperature is less than the minimum temperature value in the first target temperature range includes:

[0122] Step S1311, when the second coil temperature is less than the minimum temperature value in the first target temperature range, obtain the difference between the second coil temperature and the minimum temperature value, and determine the adjustment period and the opening degree to be adjusted of the first throttle valve according to the difference. Among them, the smaller the difference, the larger the adjustment period, and the smaller the opening degree to be adjusted;

[0123] Step S1312, at the beginning of the current adjustment period, obtain the historical opening degree of the first throttle valve in the previous adjustment period, and use the sum of the historical opening degree and the opening degree to be adjusted as the opening degree of the first throttle valve in the current adjustment period;

[0124] Step S132, after the end of the current adjustment period, return to execute the step of obtaining the difference between the second coil temperature and the minimum temperature value in the first target temperature range when the second coil temperature is less than the minimum temperature value in the first target temperature range, and determining the adjustment period of the first throttle valve and the opening to be adjusted according to the difference.

[0125] In this embodiment, the adjustment of the opening of the first throttle valve is periodic. For example, the adjustment period is 30 seconds to 60 seconds. Therefore, when the second coil temperature is less than the minimum temperature value in the first target temperature range, obtain the difference between the second coil temperature and the minimum temperature value, and determine the adjustment period of the first throttle valve and the opening to be adjusted according to the difference. Among them, the smaller the difference, the larger the adjustment period, and the smaller the opening to be adjusted. For example, when the difference is 3, the adjustment period is 30 seconds and the opening to be adjusted is 4; when the difference is 2, the adjustment period is 45 seconds and the opening to be adjusted is 3. At the start of the current adjustment period (45 seconds), obtain the historical opening (such as 200) of the first throttle valve within the previous adjustment period (30 seconds), and use the sum (such as 203) of the historical opening (such as 200) and the opening to be adjusted (such as 3) as the opening of the first throttle valve within the current adjustment period. After the end of the current adjustment period, return to execute the step of obtaining the difference between the second coil temperature and the minimum temperature value in the first target temperature range when the second coil temperature is less than the minimum temperature value in the first target temperature range, and determining the adjustment period of the first throttle valve and the opening to be adjusted, until the second coil temperature falls back into the first target temperature range.

[0126] Since the air conditioner has a lag in adjusting the indoor air, for example, at this moment, the difference between the temperature of the second coil and the minimum temperature value is 3, the corresponding adjustment period is 30 seconds, and the to-be-adjusted opening degree is 4. If the air conditioner continues to adjust according to this adjustment period and the to-be-adjusted opening degree for 10 times, then because the air conditioner will only have a final adjustment effect on the current indoor temperature after a certain period of time such as 5 minutes at this moment, and the detected difference is still 3 at this moment, the air conditioner will continue to adjust according to this adjustment period and the to-be-adjusted opening degree. Then, after 5 minutes, the temperature of the second coil may cross the first target temperature range, and the temperature of the second coil may be greater than the maximum value of the first target temperature range, that is, it may cause over-adjustment of the first throttle valve. Therefore, in this embodiment, by obtaining the difference between the temperature of the second coil and the minimum temperature value, the adjustment period and the to-be-adjusted opening degree of the first throttle valve are determined according to the difference. Among them, the smaller the difference, the larger the adjustment period, and the smaller the to-be-adjusted opening degree. That is, the closer the temperature of the second coil is to the first target temperature range, the longer the adjustment period, and the smaller the adjustment opening degree, so as to prevent over-adjustment of the first throttle valve. It can be understood that when the temperature of the second coil is greater than the maximum temperature value in the first target temperature range, the adjustment method can refer to the adjustment method when the temperature of the second coil is less than the minimum temperature value in the first target temperature range, which will not be elaborated here.

[0127] Please refer to Figure 2 、 11 Furthermore, based on the structure of the air conditioner proposed above, the 6th embodiment of the control method of the air conditioner of the present invention is proposed. In the 6th embodiment, the control method of the air conditioner includes:

[0128] Step S10, when the air conditioner is in the heating mode, adjust the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet;

[0129] Step S20, control the first air guiding member to rotate a first preset angle from the closed position, and control the second air guiding member to rotate a second preset angle from the closed position, where the first preset angle is greater than the second preset angle;

[0130] Step S50, obtain the current outdoor temperature and the outdoor coil temperature of the outdoor heat exchanger;

[0131] Step S60, obtain the second target temperature range according to the current outdoor temperature;

[0132] Step S70, adjust the opening degree of the second throttle valve according to the second target temperature range and the outdoor coil temperature so that the outdoor coil temperature falls within the second target temperature range.

[0133] Specifically, the step of adjusting the opening degree of the second throttle valve according to the second target temperature range and the outdoor coil temperature includes:

[0134] Step S71, when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, increase the opening degree of the second throttle valve;

[0135] Step S72, when the outdoor coil temperature is greater than the maximum temperature value in the second target temperature range, decrease the opening degree of the second throttle valve.

[0136] In this embodiment, the second target temperature range is the temperature range into which the outdoor coil temperature is to fall. By obtaining the current outdoor temperature and obtaining the second target temperature range according to the current outdoor temperature, in order to avoid the outdoor heat exchanger frosting too quickly, it is necessary to ensure that the outdoor coil temperature T3 is A degrees lower than the current outdoor temperature T4 and can fluctuate within the range of B degrees. Then, (T4 - A) - B ≤ T22 ≤ (T1 - X) + B. For example, when A is 4, B is 1, and the current outdoor temperature is 6 degrees, it is necessary to ensure that the outdoor coil temperature T3 is 4 degrees lower than the current outdoor temperature of 6 degrees and can fluctuate within the range of 1 degree. That is, the second target temperature range corresponding to the outdoor coil temperature T3 is 1 - 3 degrees, thereby ensuring that the outdoor heat exchanger does not frost too quickly.

[0137] Specifically, taking the above example as an illustration, when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, such as 1 degree, it indicates that the outdoor coil temperature is too low. Then, increase the opening degree of the second throttle valve to increase the outdoor coil temperature and avoid the outdoor heat exchanger frosting too quickly. On the contrary, when the outdoor coil temperature is greater than the maximum temperature value in the second target temperature range, such as 3 degrees, it indicates that the outdoor coil temperature is too high and the evaporation effect has decreased. Therefore, it is necessary to decrease the opening degree of the second throttle valve to lower the outdoor coil temperature and thus improve the evaporation effect. By repeatedly executing step S71 and step S72, the outdoor coil temperature is made to fall within the second target temperature range.

[0138] Please refer to Figure 12 , further, based on the 6th embodiment of the above control method, in the 7th embodiment, the step of increasing the opening degree of the second throttle valve when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range further includes:

[0139] Step S711, when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, obtain the difference between the outdoor coil temperature and the minimum temperature value, and determine the adjustment period and the opening degree to be adjusted of the second throttle valve according to the difference. Among them, the smaller the difference, the larger the adjustment period, and the smaller the opening degree to be adjusted;

[0140] Step S712: At the start of the current adjustment cycle, obtain the historical opening degree of the second throttle valve in the previous adjustment cycle, and use the sum of the historical opening degree and the opening degree to be adjusted as the opening degree of the second throttle valve in the current adjustment cycle;

[0141] Step S713: After the current adjustment cycle ends, return to execute the step of obtaining the difference between the outdoor coil temperature and the minimum temperature value in the second target temperature range when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, and determining the adjustment cycle and the opening degree to be adjusted of the second throttle valve according to the difference.

[0142] In this embodiment, the adjustment of the opening degree of the second throttle valve is periodic. For example, the adjustment cycle is 30 seconds to 60 seconds. Therefore, when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, obtain the difference between the outdoor coil temperature and the minimum temperature value, and determine the adjustment cycle and the opening degree to be adjusted of the second throttle valve according to the difference. Among them, the smaller the difference, the larger the adjustment cycle and the smaller the opening degree to be adjusted. For example, when the difference is 3, the adjustment cycle is 30 seconds and the opening degree to be adjusted is 4; when the difference is 2, the adjustment cycle is 45 seconds and the opening degree to be adjusted is 3. At the start of the current adjustment cycle (45 seconds), obtain the historical opening degree (such as 200) of the second throttle valve in the previous adjustment cycle (30 seconds), and use the sum (such as 203) of the historical opening degree (such as 200) and the opening degree to be adjusted (such as 3) as the opening degree of the second throttle valve in the current adjustment cycle. After the current adjustment cycle ends, return to execute the step of obtaining the difference between the outdoor coil temperature and the minimum temperature value in the second target temperature range when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, and determining the adjustment cycle and the opening degree to be adjusted of the second throttle valve until the outdoor coil temperature falls back into the second target temperature range.

[0143] Since the air conditioner has a lag in adjusting the indoor air, for example, at this moment, the difference between the outdoor coil temperature and the minimum temperature value is 3, the corresponding adjustment period is 30 seconds, and the opening to be adjusted is 4. If the air conditioner continues to adjust according to this adjustment period and the opening to be adjusted for 10 times, since the air conditioner will only have a final adjustment effect on the current indoor temperature after a certain duration such as 5 minutes at this moment, and the detected difference is still 3 at this moment, the air conditioner will continue to adjust according to this adjustment period and the opening to be adjusted. Then, after 5 minutes, the outdoor coil temperature may cross the second target temperature range, causing the outdoor coil temperature to be greater than the maximum value of the second target temperature range, that is, resulting in over-adjustment of the second throttle valve. Therefore, in this embodiment, by obtaining the difference between the outdoor coil temperature and the minimum temperature value, the adjustment period and the opening to be adjusted of the second throttle valve are determined according to the difference. Among them, the smaller the difference, the larger the adjustment period, and the smaller the opening to be adjusted. That is, the closer the outdoor coil temperature is to the minimum value of the second target temperature range, the longer the adjustment period and the smaller the adjustment opening, thereby preventing over-adjustment of the second throttle valve. It can be understood that when the outdoor coil temperature is greater than the maximum temperature value in the second target temperature range, the adjustment method can refer to the adjustment method when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, which will not be elaborated here.

[0144] Further, based on the 6th - 7th embodiments of the above control method, in the 8th embodiment, the control method further includes:

[0145] Step S80, when the air conditioner operates in the heating mode, control the switching valve to open;

[0146] Step S90, when the air conditioner operates in the cooling mode, control the switching valve to close, and control the first throttle valve and the second throttle valve to open to a preset opening.

[0147] In this embodiment, in the heating mode, control the switching valve to open to allow part of the liquid refrigerant to flow back to the liquid storage tank, thereby further avoiding too fast frosting of outdoor ventilation; in the cooling mode, control the switching valve to close to prevent part of the liquid refrigerant from flowing back to the liquid storage tank, thereby increasing the amount of liquid refrigerant entering the second heat exchanger and improving the heat exchange efficiency; in the heating mode, adjust the opening of the first throttle valve and the second throttle valve appropriately through the above embodiments to blow out airflows at different temperatures and avoid too fast frosting of the outdoor heat exchanger. In the cooling mode, control the first throttle valve and the second throttle valve 26 to be fully open, thereby achieving the best cooling effect.

[0148] The present invention also provides an air conditioner, which includes a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner as described above are implemented.

[0149] The present invention also provides a readable 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 above are implemented.

[0150] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes an outdoor unit and an indoor unit. The indoor unit includes: A housing, within which a first air duct and a second air duct are formed. The first air duct has a first air inlet and a first air outlet formed on the housing, and the second air duct has a second air inlet and a second air outlet formed on the housing; A first air guiding member rotatably provided on the housing to adjust the air outlet direction of the first air outlet; A second air guiding member rotatably provided on the housing to adjust the air outlet direction of the second air outlet; A first heat exchanger disposed within the first air duct; A second heat exchanger disposed within the second air duct; A first throttling valve connected in series between the first heat exchanger and the second heat exchanger; The outdoor unit includes a four-way valve, a compressor, an outdoor heat exchanger, and a gas-liquid separator; A switching valve, through which the gas-liquid separator is communicated with the inlet of the liquid storage tank of the compressor; A second throttling valve, through which the gas-liquid separator is communicated with the second end of the outdoor heat exchanger; The control method of the air conditioner includes: When the air conditioner is in the heating mode, adjusting the opening degree of the first throttling valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet. Among them, adjusting the opening degree of the first throttling valve includes: obtaining the current indoor temperature; obtaining a first target temperature range according to the current indoor temperature; when the second coil temperature of the second heat exchanger is less than the minimum temperature value in the first target temperature range, obtaining the difference between the second coil temperature and the minimum temperature value, and determining the adjustment period and the opening degree to be adjusted of the first throttling valve according to the difference. Wherein, the smaller the difference, the larger the adjustment period and the smaller the opening degree to be adjusted; at the start of the current adjustment period, obtaining the historical opening degree of the first throttling valve in the previous adjustment period, and taking the sum of the historical opening degree and the opening degree to be adjusted as the opening degree of the first throttling valve in the current adjustment period; after the current adjustment period ends, return to execute the step of obtaining the difference between the second coil temperature and the minimum temperature value in the first target temperature range when the second coil temperature is less than the minimum temperature value in the first target temperature range, and determining the adjustment period and the opening degree to be adjusted of the first throttling valve; when the second coil temperature is greater than the maximum temperature value in the first target temperature range, reducing the opening degree of the first throttling valve so that the second coil temperature falls within the first target temperature range; Controlling the first air guiding member to rotate a first preset angle from the closed position, and controlling the second air guiding member to rotate a second preset angle from the closed position, where the first preset angle is greater than the second preset angle.

2. The control method of the air conditioner according to claim 1, wherein, The step of adjusting the opening degree of the first throttling valve includes: Obtaining the temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger; Obtaining the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger; Adjust the opening degree of the first throttle valve according to the temperature difference and the target temperature difference.

3. The control method of the air conditioner according to claim 2, characterized in that, The step of adjusting the opening degree of the first throttle valve according to the temperature difference and the target temperature difference includes: When the temperature difference is greater than the target temperature difference, increase the opening degree of the first throttle valve; When the temperature difference is less than the target temperature difference, decrease the opening degree of the first throttle valve.

4. The control method of the air conditioner according to claim 2, wherein The step of obtaining the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger includes: Obtain the current indoor temperature and the outdoor coil temperature of the outdoor unit; Obtain corresponding first reference value, second reference value and third reference value according to the first coil temperature, the current indoor temperature and the outdoor coil temperature respectively; Obtain the target temperature difference according to the first reference value, the second reference value and the third reference value.

5. A control method for an air conditioner, characterized in that, The air conditioner includes an outdoor unit and an indoor unit, and the indoor unit includes: A housing, in which a first air duct and a second air duct are formed. The first air duct forms a first air inlet and a first air outlet on the housing, and the second air duct forms a second air inlet and a second air outlet on the housing; A first air guiding member, which is rotatably arranged on the housing to adjust the air outlet direction of the first air outlet; A second air guiding member, which is rotatably arranged on the housing to adjust the air outlet direction of the second air outlet; A first heat exchanger, which is arranged in the first air duct; A second heat exchanger, which is arranged in the second air duct; A first throttle valve, which is connected in series between the first heat exchanger and the second heat exchanger; The outdoor unit includes a four-way valve, a compressor, an outdoor heat exchanger and a gas-liquid separator; A switching valve, and the gas-liquid separator is communicated with the inlet of the liquid storage tank of the compressor through the switching valve; A second throttle valve, and the gas-liquid separator is communicated with the second end of the outdoor heat exchanger through the second throttle valve; The control method of the air conditioner includes: When the air conditioner is in the heating mode, adjust the opening degree of the first throttle valve so that the first air outlet temperature of the first air outlet is higher than the second air outlet temperature of the second air outlet; Control the first air guiding member to rotate a first preset angle from the closed position, and control the second air guiding member to rotate a second preset angle from the closed position, wherein the first preset angle is greater than the second preset angle; Obtain the current outdoor temperature and the outdoor coil temperature of the outdoor heat exchanger; Obtain a second target temperature range according to the current outdoor temperature; Adjust the opening degree of the second throttle valve according to the second target temperature range and the outdoor coil temperature so that the outdoor coil temperature falls within the second target temperature range; When the air conditioner operates in the heating mode, control the switching valve to open; When the air conditioner operates in the cooling mode, control the switching valve to close, and control the first throttle valve and the second throttle valve to open to a preset opening degree.

6. The control method of the air conditioner according to claim 5, characterized in that, The step of adjusting the opening degree of the second throttle valve according to the second target temperature range and the outdoor coil temperature includes: When the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, increase the opening degree of the second throttle valve; When the outdoor coil temperature is greater than the maximum temperature value in the second target temperature range, decrease the opening degree of the second throttle valve.

7. The control method of the air conditioner according to claim 6, characterized in that, The step of increasing the opening degree of the second throttle valve when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range further includes: When the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, obtain the difference between the outdoor coil temperature and the minimum temperature value, and determine the adjustment period and the opening degree to be adjusted of the second throttle valve according to the difference. Wherein, the smaller the difference, the larger the adjustment period, and the smaller the opening degree to be adjusted; At the beginning of the current adjustment period, obtain the historical opening degree of the second throttle valve in the previous adjustment period, and use the sum of the historical opening degree and the opening degree to be adjusted as the opening degree of the second throttle valve in the current adjustment period; After the current adjustment period ends, return to execute the step of obtaining the difference between the outdoor coil temperature and the minimum temperature value when the outdoor coil temperature is less than the minimum temperature value in the second target temperature range, and determining the adjustment period and the opening degree to be adjusted of the second throttle valve according to the difference.

8. An air conditioner, characterized in that, The air conditioner includes a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner according to any one of claims 1-7 are implemented.

9. A readable 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 according to any one of claims 1-7 are implemented.

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