A control method and device of an air conditioner, the air conditioner and a storage medium

Abstract

The application discloses a control method and device of an air conditioner, the air conditioner and a storage medium, and relates to the technical field of air conditioners. The method comprises the following steps: when the air conditioner starts heating operation, according to the current indoor environment temperature and the current inner pipe temperature of the air conditioner, if it is determined that the air conditioner needs to enter preset heating cold-wind-prevention control logic, the air conditioner is controlled to enter the preset heating cold-wind-prevention control logic; the air conditioner is controlled to execute preset indoor unit side control logic, at least one of the opening and closing of a baffle, the opening angle of a guide vane, the opening and closing of an electric auxiliary heating device and the rotating speed of an indoor fan is controlled; the air conditioner is controlled to execute preset outdoor unit side control logic, at least one of the opening degree of a throttling device and the opening and closing of a refrigerant flow branch directly connected between an exhaust port of a compressor and at least part of a pipeline of an outdoor heat exchanger is controlled. According to the scheme, when the air conditioner starts heating mode, the pipe temperature of an indoor heat exchanger and / or the pipe temperature of an outdoor heat exchanger are rapidly increased, and user experience is improved.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to an air conditioner control method, device, air conditioner, and storage medium, and particularly to an air conditioner heating and anti-cold air control method, device, air conditioner, and storage medium. Background Technology

[0002] When an air conditioner is first turned on for heating, the temperature of the indoor heat exchanger is relatively low. If the indoor fan is started directly, the air blown out will be cold and uncomfortable for people. Therefore, air conditioners are generally equipped with anti-cold air control logic.

[0003] The anti-cold air control logic in the relevant solutions prevents most indoor fans from starting immediately when the heating mode is set. This control is to prevent cold air from blowing directly into the room or onto people when the indoor heat exchanger pipe temperature is low upon startup. However, when the air conditioner is turned on for heating, due to the anti-cold air requirement, the indoor unit needs to wait a relatively long time after startup until the indoor heat exchanger pipe temperature rises to a certain level before the indoor fan starts to deliver hot air to exchange heat with the room air. The room temperature rises slowly, increasing the waiting time for users from startup to the delivery of hot air, resulting in a poor user experience.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a control method, device, air conditioner, and storage medium for an air conditioner, in order to solve the problem in related solutions where the user experience is poor due to the long waiting time for the air conditioner to output hot air during the initial stage of the air conditioner's operation in heating mode. The invention aims to improve the user experience by rapidly increasing the pipe temperature of the indoor heat exchanger when the air conditioner is turned on in heating mode, thereby reducing the waiting time during the initial stage of the heating mode, and / or by rapidly increasing the pipe temperature of the outdoor heat exchanger during the air conditioner's heating operation, thereby extending the heating time.

[0006] This invention provides a control method for an air conditioner, wherein the air conditioner has an indoor unit and an outdoor unit. The indoor unit has an indoor heat exchanger, an indoor fan, an air inlet, and an air outlet. A baffle is provided at the air inlet, and a guide vane is provided at the air outlet. An electric auxiliary heating device is provided between the indoor heat exchanger and the indoor fan. The outdoor unit has a compressor, an outdoor heat exchanger, and a throttling device. The refrigerant discharged from the compressor's exhaust port can be divided into two paths: one path can pass through the indoor heat exchanger, the throttling device, and the outdoor heat exchanger, and the other path can directly pass through at least a portion of the piping of the outdoor heat exchanger. The outputs of the two paths then merge and return to the compressor's suction port. The control method for the air conditioner includes: when the air conditioner is turned on and starts operating in heating mode, acquiring the indoor ambient temperature of the environment where the air conditioner is located, and recording it as the current indoor ambient temperature of the air conditioner; and acquiring the... The pipe temperature of the indoor heat exchanger is recorded as the current indoor pipe temperature of the air conditioner. Based on the current indoor ambient temperature and the current indoor pipe temperature of the air conditioner, it is determined whether the air conditioner needs to enter the preset heating and cold air prevention control logic. If it is determined that the air conditioner needs to enter the preset heating and cold air prevention control logic, then after the compressor starts and runs, the air conditioner is controlled to enter the preset heating and cold air prevention control logic to: control the air conditioner to execute the preset indoor unit side control logic to control at least one of the following: the action state of the baffle, the opening angle of the air guide plate, the opening and closing of the electric auxiliary heating device, and the speed of the indoor fan; and / or control the air conditioner to execute the preset outdoor unit side control logic to control at least one of the following: the opening degree of the throttling device, and the opening and closing of the refrigerant flow branch directly connected between the compressor exhaust port and at least a portion of the pipes of the outdoor heat exchanger.

[0007] In some implementations, the method further includes: when the air conditioner has executed the preset indoor unit-side control logic and / or the air conditioner has executed the preset outdoor unit-side control logic, determining whether the air conditioner needs to exit the preset heating and anti-cold air control logic based on the current indoor pipe temperature of the air conditioner; if it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, then while the compressor continues to run, controlling the air conditioner to exit the preset heating and anti-cold air control logic: when the air conditioner has executed the preset indoor unit-side control logic, controlling the air conditioner to exit the preset indoor unit-side control logic, and then controlling the indoor unit of the air conditioner to operate according to the heating control logic in the heating mode; and / or, when the air conditioner has executed the preset outdoor unit-side control logic, controlling the air conditioner to exit the preset outdoor unit-side control logic, and then controlling the outdoor unit of the air conditioner to operate according to the heating control logic in the heating mode.

[0008] In some embodiments, controlling the air conditioner to execute preset indoor unit-side control logic to control at least one of the following: the action state of the baffle, the opening angle of the air guide plate, the opening and closing of the electric auxiliary heating device, and the rotation speed of the indoor fan. This includes: under the preset indoor unit-side control logic, performing at least one of the following: controlling the action state of the baffle to close the air inlet, controlling the opening angle of the air guide plate to open to a preset minimum opening angle, controlling the electric auxiliary heating device to turn on, and controlling the indoor fan to turn on and reverse.

[0009] In some embodiments, controlling the indoor fan to turn on and reverse includes: after controlling the indoor fan to turn on, first controlling the indoor fan to reverse at the lowest fan speed; until the current indoor pipe temperature of the air conditioner rises to a first set temperature, then controlling the indoor fan to reverse at a first set speed; the first set speed is greater than the speed corresponding to the lowest fan speed of the indoor fan; until the current indoor pipe temperature of the air conditioner rises to a second set temperature, then controlling the indoor fan to reverse at a second set speed or at the target fan speed; wherein, the second set speed is greater than the first set speed.

[0010] In some implementations, controlling the indoor fan to operate at a second set speed or at the target fan speed in reverse includes: if the speed corresponding to the target fan speed is less than or equal to the first set speed, then controlling the indoor fan to operate in reverse at the second set speed; after a first set time, determining that the air conditioner needs to exit the preset heating and anti-cold air control logic, and controlling the air conditioner to exit the preset indoor unit side control logic; if the speed corresponding to the target fan speed is greater than the first set speed, then controlling the indoor fan to operate in reverse at the target fan speed; after a first set time, determining that the air conditioner needs to exit the preset heating and anti-cold air control logic, and controlling the air conditioner to exit the preset indoor unit side control logic.

[0011] In some implementations, controlling the air conditioner to exit the preset indoor unit-side control logic includes: when exiting the preset indoor unit-side control logic, performing at least one of the following: controlling the indoor fan to stop reversing, controlling the action state of the baffle to open the air inlet, controlling the opening angle of the air guide to the default angle or the target angle of the air guide, and controlling the electric auxiliary heating device to remain on when the current indoor ambient temperature of the air conditioner is lower than the preset indoor temperature, and controlling the electric auxiliary heating device to turn off when the current indoor ambient temperature of the air conditioner is not lower than the preset indoor temperature, so as to exit the preset indoor unit-side control logic; controlling the indoor fan to turn on and run forward at the lowest fan speed; until the current indoor pipe temperature of the air conditioner is greater than or equal to a third set temperature or the time the indoor fan runs forward at the lowest fan speed is greater than or equal to a second set time, then controlling the indoor fan to run forward at the target fan speed.

[0012] In some embodiments, controlling the air conditioner to execute preset outdoor unit-side control logic to control at least one of the following: the opening degree of the throttling device and the opening / closing of the refrigerant flow branch directly connecting the compressor's discharge port and at least a portion of the piping of the outdoor heat exchanger. This includes: under the preset outdoor unit-side control logic, performing at least one of the following: controlling the opening degree of the throttling device to its maximum allowable opening degree; and controlling the opening of the refrigerant flow branch directly connecting the compressor's discharge port and at least a portion of the piping of the outdoor heat exchanger, so that the refrigerant discharged from the compressor's discharge port flows directly to the outdoor heat exchanger. In at least a portion of the pipes of the outdoor heat exchanger; when it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, the air conditioner is controlled to exit the preset outdoor unit side control logic; wherein, when exiting the preset outdoor unit side control logic, at least one of the following is executed: controlling the opening degree of the throttling device to the set opening degree in the heating control logic of the air conditioner, controlling the refrigerant flow branch directly connected between the exhaust port of the compressor and at least a portion of the pipes of the outdoor heat exchanger to close, so that all the refrigerant discharged from the exhaust port of the compressor participates in the heating cycle of the heating control logic of the air conditioner.

[0013] In conjunction with the above method, another aspect of the present invention provides a control device for an air conditioner, wherein the air conditioner has an indoor unit and an outdoor unit, the indoor unit has an indoor heat exchanger, an indoor fan, an air inlet and an air outlet, a baffle is provided at the air inlet, an air guide plate is provided at the air outlet, and an electric auxiliary heating device is provided between the indoor heat exchanger and the indoor fan; the outdoor unit has a compressor, an outdoor heat exchanger and a throttling device, the refrigerant discharged from the compressor's exhaust port can be divided into two paths: one path can pass through the indoor heat exchanger, the throttling device and the outdoor heat exchanger, and the other path can directly pass through at least a portion of the pipes of the outdoor heat exchanger, and then the outputs of the two paths can be combined and returned to the compressor's suction port; the control device for the air conditioner includes: an acquisition unit configured to, when the air conditioner is turned on and starts operating in heating mode, acquire the indoor ambient temperature of the environment where the air conditioner is located, and record it as the current indoor ambient temperature of the air conditioner; and acquire the pipe temperature of the indoor heat exchanger, and record it as the current indoor ambient temperature of the air conditioner. The current indoor pipe temperature of the air conditioner; the control unit is configured to determine whether the air conditioner needs to enter a preset heating and anti-cold air control logic based on the current indoor ambient temperature of the air conditioner and the current indoor pipe temperature of the air conditioner; the control unit is further configured to, if it is determined that the air conditioner needs to enter the preset heating and anti-cold air control logic, control the air conditioner to enter the preset heating and anti-cold air control logic after the compressor starts and runs, such that: the control unit is further configured to control the air conditioner to execute a preset indoor unit-side control logic, controlling at least one of the following: the action state of the baffle, the opening angle of the air guide plate, the opening and closing of the electric auxiliary heating device, and the speed of the indoor fan; and / or, the control unit is further configured to control the air conditioner to execute a preset outdoor unit-side control logic, controlling at least one of the following: the opening degree of the throttling device, and the opening and closing of the refrigerant flow branch directly connected between the compressor exhaust port and at least a portion of the pipes of the outdoor heat exchanger.

[0014] In some embodiments, the control unit is further configured to, when the air conditioner has executed the preset indoor unit-side control logic and / or the air conditioner has executed the preset outdoor unit-side control logic, determine, in conjunction with the current indoor pipe temperature of the air conditioner, whether the air conditioner needs to exit the preset heating and anti-cold air control logic; the control unit is further configured to, if it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, control the air conditioner to exit the preset heating and anti-cold air control logic while the compressor continues to run; the control unit is further configured to, when the air conditioner has executed the preset indoor unit-side control logic, control the air conditioner to exit the preset indoor unit-side control logic, and then control the indoor unit of the air conditioner to operate according to the heating control logic in the heating mode; and / or, the control unit is further configured to, when the air conditioner has executed the preset outdoor unit-side control logic, control the air conditioner to exit the preset outdoor unit-side control logic, and then control the outdoor unit of the air conditioner to operate according to the heating control logic in the heating mode.

[0015] In some embodiments, the control unit controls the air conditioner to execute preset indoor unit-side control logic to control at least one of the following: the operation state of the baffle, the opening angle of the air guide plate, the opening and closing of the electric auxiliary heating device, and the rotation speed of the indoor fan. This includes: under the preset indoor unit-side control logic, performing at least one of the following: controlling the operation state of the baffle to close the air inlet, controlling the opening angle of the air guide plate to open to a preset minimum opening angle, controlling the electric auxiliary heating device to turn on, and controlling the indoor fan to turn on and reverse.

[0016] In some embodiments, the control unit controls the indoor fan to turn on and reverse, including: after controlling the indoor fan to turn on, first controlling the indoor fan to reverse at the lowest fan speed; until the current indoor pipe temperature of the air conditioner rises to a first set temperature, then controlling the indoor fan to reverse at a first set speed; the first set speed is greater than the speed corresponding to the lowest fan speed of the indoor fan; until the current indoor pipe temperature of the air conditioner rises to a second set temperature, then controlling the indoor fan to reverse at a second set speed or at the target fan speed; wherein, the second set speed is greater than the first set speed.

[0017] In some embodiments, the control unit controls the indoor fan to operate in reverse at a second set speed or at a target fan speed, including: if the speed corresponding to the target fan speed is less than or equal to the first set speed, then controlling the indoor fan to operate in reverse at the second set speed; after a first set time, determining that the air conditioner needs to exit the preset heating and anti-cold air control logic, and controlling the air conditioner to exit the preset indoor unit side control logic; if the speed corresponding to the target fan speed is greater than the first set speed, then controlling the indoor fan to operate in reverse at the target fan speed; after a first set time, determining that the air conditioner needs to exit the preset heating and anti-cold air control logic, and controlling the air conditioner to exit the preset indoor unit side control logic.

[0018] In some embodiments, the control unit controls the air conditioner to exit the preset indoor unit-side control logic, including: when exiting the preset indoor unit-side control logic, performing at least one of the following: controlling the indoor fan to stop reversing, controlling the action state of the baffle to open the air inlet, controlling the opening angle of the air guide to the default angle or the target angle of the air guide, and controlling the electric auxiliary heating device to remain on when the current indoor ambient temperature of the air conditioner is lower than the preset indoor temperature, and controlling the electric auxiliary heating device to turn off when the current indoor ambient temperature of the air conditioner is not lower than the preset indoor temperature, so as to exit the preset indoor unit-side control logic; controlling the indoor fan to turn on and run forward at the lowest fan speed; until the current indoor pipe temperature of the air conditioner is greater than or equal to a third set temperature or the time the indoor fan runs forward at the lowest fan speed is greater than or equal to a second set time, then controlling the indoor fan to run forward at the target fan speed.

[0019] In some embodiments, the control unit controls the air conditioner to execute preset outdoor unit-side control logic, controlling at least one of the following: the opening degree of the throttling device and the opening / closing of the refrigerant flow branch directly connected between the compressor's discharge port and at least a portion of the piping of the outdoor heat exchanger. This includes: under the preset outdoor unit-side control logic, performing at least one of the following: controlling the opening degree of the throttling device to its maximum allowable opening degree; and controlling the opening of the refrigerant flow branch directly connected between the compressor's discharge port and at least a portion of the piping of the outdoor heat exchanger, so that the refrigerant discharged from the compressor's discharge port directly... The refrigerant flows into at least a portion of the pipes of the outdoor heat exchanger; when it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, the air conditioner is controlled to exit the preset outdoor unit side control logic; wherein, when exiting the preset outdoor unit side control logic, at least one of the following is executed: the opening degree of the throttling device is controlled to be set to the opening degree in the heating control logic of the air conditioner, and the refrigerant flow branch directly connected between the exhaust port of the compressor and at least a portion of the pipes of the outdoor heat exchanger is closed, so that all the refrigerant discharged from the exhaust port of the compressor participates in the heating cycle of the heating control logic of the air conditioner.

[0020] In conjunction with the above-described device, the present invention further provides an air conditioner, comprising: the control device for the air conditioner described above.

[0021] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located controls the air conditioner control method described above to be performed.

[0022] Therefore, the solution of this invention, by setting a baffle at the air inlet of the air conditioner that can open or close the air inlet of the indoor unit, and setting an electric auxiliary heating device in the indoor unit, activates the electric auxiliary heating device when the air conditioner is turned on in heating mode, and simultaneously controls the indoor fan to reverse. The reverse rotation of the indoor fan uses the heat generated by the electric heating device to be blown evenly to the indoor heat exchanger in the form of hot air. Furthermore, by controlling the baffle at the air inlet of the air conditioner to close the air inlet and the guide plate at the air outlet to the minimum angle to form a near-sealed space, the pipe temperature of the indoor heat exchanger is rapidly increased. At the same time, a bypass pipe is set between the compressor and the outdoor heat exchanger, and the hot air after the compressor is turned on is used to increase the pipe temperature of the outdoor heat exchanger by flowing through the refrigerant, thereby rapidly increasing the pipe temperature of the outdoor heat exchanger. Thus, by rapidly increasing the pipe temperature of the indoor heat exchanger when the air conditioner is turned on in heating mode, the waiting time in the initial stage of the heating mode is reduced, and / or the pipe temperature of the outdoor heat exchanger is rapidly increased during the heating operation of the air conditioner, the heating time is extended, thereby improving the user experience.

[0023] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating an embodiment of the control method for an air conditioner according to the present invention;

[0026] Figure 2 This is a flowchart illustrating an embodiment of the method of the present invention for determining whether to exit the preset heating and anti-cold air control logic;

[0027] Figure 3 This is a flowchart illustrating an embodiment of the method of the present invention for controlling the indoor fan to turn on and reverse.

[0028] Figure 4 This is a flowchart illustrating an embodiment of the method of the present invention, which controls the air conditioner to exit the preset indoor unit-side control logic.

[0029] Figure 5 This is a flowchart illustrating an embodiment of the method of the present invention, which controls the air conditioner to execute a preset outdoor unit-side control logic, controlling at least one of the opening degree of the throttling device and the opening and closing of at least one of the refrigerant flow branch directly connected between the compressor's exhaust port and at least a portion of the pipes of the outdoor heat exchanger.

[0030] Figure 6 This is a schematic diagram of the structure of an embodiment of the control device for an air conditioner according to the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of an embodiment of the indoor unit of the air conditioner of the present invention;

[0032] Figure 8 This is a schematic diagram of the assembly structure of the baffle at the air inlet of the indoor unit of the air conditioner of the present invention, wherein (a) is a schematic diagram of the assembly structure of the air inlet and the baffle of the indoor unit, and (b) is a schematic diagram of a partial structure of the baffle.

[0033] Figure 9 This is a schematic diagram of the refrigerant flow direction in the heating mode of the air conditioner of the present invention;

[0034] Figure 10 This is a schematic diagram of the control flow of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage.

[0035] Figure 11This is a schematic diagram of the control flow of the outdoor unit of the air conditioner of the present invention during the heating and cold air prevention stage.

[0036] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0037] 1-Air guide plate; 2-Indoor fan; 3-Electric auxiliary heating device; 4-Baffle; 5-Indoor heat exchanger; 6-Outdoor heat exchanger; 7-Electronic expansion valve; 8-Compressor; 9-Transmission link; 102-Acquisition unit; 104-Control unit. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] Considering that when an air conditioner is turned on for heating, based on its anti-cold air control logic, most indoor fans do not start immediately when the heating mode is set. This results in a relatively long wait after the indoor unit is turned on, until the indoor heat exchanger pipe temperature rises to a certain level before the indoor fans start to deliver hot air and exchange heat with the room air. The room temperature rises slowly, increasing the waiting time for users from turning on the unit to receiving hot air, leading to a poor user experience. Furthermore, because air conditioners operate in low-temperature heating environments, the lower the outdoor ambient temperature, the more prone the outdoor heat exchanger is to defrosting, resulting in a shorter actual heating time. Combined with the long waiting time for users to receive hot air, this leads to a short overall heating cycle, impacting user comfort.

[0040] Therefore, the present invention proposes a control method for an air conditioner, specifically a heating and cold air prevention control method. This method involves installing a baffle 4 at the air inlet of the air conditioner to open or close the indoor unit's air inlet. An electric auxiliary heating device 3 is installed in the indoor unit. When the air conditioner is in heating mode, the electric auxiliary heating device 3 is activated, and the indoor fan 2 is reversed. The reverse rotation of the indoor fan 2 evenly blows the heat generated by the electric heating device onto the indoor heat exchanger 5 as hot air. Furthermore, by controlling the baffle 4 at the air inlet to close the air inlet and the guide vane 1 at the air outlet to a minimum angle, a near-sealed space is formed, rapidly increasing the pipe temperature of the indoor heat exchanger 5, reducing the waiting time for heating and cold air prevention, and improving the user experience. Simultaneously, a bypass pipe is installed between the compressor 8 and the outdoor heat exchanger 6. The hot air from the compressor 8, flowing through the refrigerant, increases the pipe temperature of the outdoor heat exchanger 6, extending the overall operating time before the outdoor heat exchanger 6 reaches the defrost temperature, ultimately lengthening the entire heating cycle and improving user comfort.

[0041] According to embodiments of the present invention, a control method for an air conditioner is provided, such as... Figure 1 The diagram shows a flow chart of an embodiment of the method of the present invention. The air conditioner has an indoor unit and an outdoor unit. The indoor unit has an indoor heat exchanger 5, an indoor fan 2, an air inlet, and an air outlet. A baffle 4 is provided at the air inlet, and a guide vane 1 is provided at the air outlet. An electric auxiliary heating device 3 is provided between the indoor heat exchanger 5 and the indoor fan 2. Specifically, Figure 7 This is a schematic diagram of the structure of an embodiment of the indoor unit of the air conditioner of the present invention. Figure 7 As shown, the indoor unit of the air conditioner of the present invention includes: an air inlet panel, an air outlet panel, an indoor fan 2, an electric auxiliary heating device 3, and an indoor heat exchanger 5. A baffle 4 is provided at the air inlet of the air inlet panel, which can open or close the air inlet of the indoor unit. An air guide plate 1 is provided at the air outlet of the air outlet panel, which is responsible for distributing the air outlet direction. The electric auxiliary heating device 3 is disposed between the indoor fan 2 and the indoor heat exchanger 5, and is used to heat the air passing through the electric auxiliary heating device 3. The electric auxiliary heating device 3 of the present invention uses a ceramic PTC electric heater with a non-uniform heating element distribution density. Since a higher density of heating elements results in greater heat generation, the density of the heating elements can be arranged according to the actual temperature conditions at different locations of the air outlet to balance the outlet temperature difference and make the outlet temperature more uniform.

[0042] In the present invention, the outdoor unit includes a compressor 8, an outdoor heat exchanger 6, and a throttling device (such as an electronic expansion valve 7). The refrigerant discharged from the exhaust port of the compressor 8 can be divided into two paths: one path passes through the indoor heat exchanger 5, the throttling device, and the outdoor heat exchanger 6; the other path passes directly through at least a portion of the piping of the outdoor heat exchanger 6. The outputs of the two paths then merge and return to the suction port of the compressor 8. Specifically, Figure 9 This is a schematic diagram of the refrigerant flow direction in the heating mode of the air conditioner of the present invention. Figure 9 As shown, the air conditioner of this invention, in addition to the indoor heat exchanger 5, also includes a compressor 8, a four-way valve, an electronic expansion valve 7, and an outdoor heat exchanger 6. The discharge port of the compressor 8 is connected to the first port of the three-way valve, and the second port of the three-way valve is connected to the first port of the four-way valve. The second port of the four-way valve, after passing through the indoor heat exchanger 5, the electronic expansion valve 7, and the outdoor heat exchanger 6, is connected to the fourth port of the four-way valve. The third port of the four-way valve is connected to the suction port of the compressor 8. A pipe containing a pipe temperature sensing bulb is placed in the coil of the outdoor heat exchanger 6 and is connected to the third port of the three-way valve. Figure 9 As shown, the compressor 8, four-way valve, indoor and outdoor heat exchangers (i.e., indoor heat exchanger 5 and outdoor heat exchanger 6), and electronic expansion valve 7 are connected by pipelines. The refrigerant flows within the pipelines and exchanges heat with the air in the indoor and outdoor heat exchangers, forming a refrigerant circulation loop to achieve cooling or heating of the air. In this invention, a refrigerant pipeline is also connected between the compressor 8 and the outdoor heat exchanger 6. One end of this refrigerant pipeline is connected to the exhaust pipeline of the compressor 8 via a three-way valve, and the other end is connected to a pipeline in the outdoor heat exchanger 6 where a pipe temperature sensor is placed. This allows the pipe temperature sensor to quickly and accurately detect changes in the pipe temperature of the outdoor heat exchanger 6 when the hot air from the compressor 8 flows through the refrigerant into the outdoor heat exchanger 6.

[0043] In the solution of the present invention, such as Figure 1 As shown, the control method of the air conditioner includes steps S110 to S150.

[0044] In step S110, when the air conditioner is turned on and starts running in heating mode, the indoor ambient temperature of the environment where the air conditioner is located is obtained and recorded as the current indoor ambient temperature of the air conditioner; and the pipe temperature of the indoor heat exchanger 5 is obtained and recorded as the current indoor pipe temperature of the air conditioner.

[0045] In step S120, based on the current indoor ambient temperature of the air conditioner and the current internal pipe temperature of the air conditioner, it is determined whether the air conditioner needs to enter the preset heating and anti-cold air control logic.

[0046] In step S130, if it is determined that the air conditioner needs to enter the preset heating and anti-cold air control logic, then after the compressor 8 starts and runs, the air conditioner is controlled to enter the preset heating and anti-cold air control logic, that is, step S140 and / or step S150 are executed.

[0047] In step S140, the air conditioner is controlled to execute a preset indoor unit side control logic to control at least one of the following: the action state of the baffle 4, the opening angle of the air guide plate 1, the opening and closing of the electric auxiliary heating device 3, and the speed of the indoor fan 2. This allows the indoor heat exchanger 5 to rapidly increase the temperature in a near-sealed space by transferring heat through hot air, reducing the waiting time for heating and preventing cold air from blowing, and improving the user experience.

[0048] In some embodiments, step S140 involves controlling the air conditioner to execute a preset indoor unit-side control logic, controlling at least one of the following: the operation state of the baffle 4, the opening angle of the air guide plate 1, the on / off state of the electric auxiliary heating device 3, and the rotation speed of the indoor fan 2. This includes, under the preset indoor unit-side control logic, performing at least one of the following: controlling the operation state of the baffle 4 to close the air inlet, controlling the opening angle of the air guide plate 1 to open to a preset minimum opening angle, controlling the electric auxiliary heating device 3 to turn on, and controlling the indoor fan 2 to turn on and reverse, so as to evenly blow hot air onto the indoor heat exchanger 5 to rapidly increase the pipe temperature of the indoor heat exchanger 5. Figure 7 In the example shown, a baffle 4 is installed at the air inlet as an auxiliary control method to achieve the heating and cold air prevention function. Generally, central air conditioners have air valves at their air inlets, while household air conditioners generally do not use air valves; the air valve and the baffle 4 have similar functions, the air valve regulates the air volume, and opening and closing the baffle 4 controls the air intake of the air conditioner. Figure 8 This is a schematic diagram of the assembly structure of the baffle at the air inlet of the indoor unit of the air conditioner of the present invention, wherein (a) is a schematic diagram of the assembly structure of the air inlet and the baffle of the indoor unit, and (b) is a partial structural schematic diagram of the baffle. Figure 8 As shown, the baffle 4 can be a structure similar to a grille. The baffle 4 can be opened and closed by the transmission link 9. The transmission link 9 has an actuator connected to the controller of the air conditioner. The actuator is used to control the opening and closing (i.e., opening and closing) of the baffle 4 under the control of the controller of the air conditioner.

[0049] Specifically, Figure 10 This is a schematic diagram of the control flow for the heating and cold air prevention stage of the indoor unit of the air conditioner according to the present invention. Figure 10 As shown, the control process of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage includes:

[0050] Step 11: When the air conditioner is turned on and running in heating mode, real-time operating parameter information such as indoor ambient temperature and pipe temperature of indoor heat exchanger 5 is obtained, and then step 12 is executed.

[0051] Step 12: When the indoor ambient temperature and the pipe temperature of the indoor heat exchanger 5 reach the preset temperature conditions for the anti-cold air stage, the anti-cold air stage is entered. The control baffle 4 closes the air inlet, the air guide plate 1 opens to its minimum angle when the air guide plate 1 is open, the electric auxiliary heating device 3 is activated, and the indoor fan 2 is controlled to reverse, blowing hot air evenly onto the indoor heat exchanger 5 to quickly increase the pipe temperature of the indoor heat exchanger 5. Then, step 13 is executed. Note that the minimum angle when the air guide plate 1 is open refers to the minimum angle when the air guide plate 1 is open, excluding 0°, to avoid misleading users into thinking that the air conditioner is malfunctioning.

[0052] In some implementations, the specific process of controlling the indoor fan 2 to turn on and reverse is described in the following exemplary description.

[0053] The following is combined Figure 3 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for controlling the indoor fan 2 to turn on and reverse. It further illustrates the specific process of controlling the indoor fan 2 to turn on and reverse, including steps S310 to S330.

[0054] Step S310: After the indoor fan 2 is turned on, the indoor fan 2 is first controlled to reverse at the lowest fan speed.

[0055] Step S320: After the current indoor pipe temperature of the air conditioner rises to the first set temperature, the indoor fan 2 is controlled to reverse and run at the first set speed; the first set speed is greater than the speed corresponding to the lowest fan speed of the indoor fan 2. The first set temperature is as shown in the preset temperature T. 内管1 .

[0056] Step S330: After the current indoor pipe temperature of the air conditioner rises to the second set temperature, control the indoor fan 2 to run at the second set speed or at the target fan speed in reverse; wherein, the second set speed is greater than the first set speed. The second set temperature is as shown in the preset temperature T. 内管2 .

[0057] Specifically, such as Figure 10As shown, the control process of the heating and cold air prevention stage of the indoor unit of the air conditioner of the present invention further includes: In step 12, the rotation speed of the indoor fan 2 changes with the pipe temperature of the indoor heat exchanger 5. When the indoor fan 2 is turned on, it initially operates at the lowest fan speed to avoid the problem that the pipe temperature of the indoor heat exchanger 5 will drop instead of rise due to excessive airflow caused by directly operating at a higher set fan speed. As the pipe temperature of the indoor heat exchanger 5 increases, when the pipe temperature of the indoor heat exchanger 5 rises to the preset temperature T... 内管1 At that time, the indoor fan 2 rotates at a preset speed V1, which is higher than the lowest fan speed; when the pipe temperature of the indoor heat exchanger 5 rises to the preset temperature T... 内管2 At this time, the indoor fan 2 is adjusted to the set fan speed at the preset speed V1, provided that the speed of the set fan speed is greater than the preset speed V1 of the indoor fan 2.

[0058] In some embodiments, controlling the indoor fan 2 to operate at a second set speed or in reverse at the target fan speed in step S330 includes any of the following control scenarios:

[0059] First control scenario: When the indoor fan 2 is running in reverse at the first set speed, until the current indoor pipe temperature of the air conditioner rises to the second set temperature, if the speed corresponding to the target fan speed of the indoor fan 2 is less than or equal to the first set speed, then the indoor fan 2 is controlled to run in reverse at the second set speed. After a first set time, it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, and the air conditioner is controlled to exit the preset indoor unit side control logic as in step S230.

[0060] The second control scenario: When the indoor fan 2 is running in reverse at the first set speed, until the current indoor pipe temperature of the air conditioner rises to the second set temperature, if the speed corresponding to the target fan speed of the indoor fan 2 is greater than the first set speed, then the indoor fan 2 is controlled to run in reverse at the target fan speed. After a first set time, it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, and the air conditioner is controlled to exit the preset indoor unit side control logic as in step S230.

[0061] Specifically, such as Figure 10 As shown, the control process of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage further includes: in step 12, if the speed of the set fan is less than or equal to the preset speed V1 of the indoor fan 2, then when the pipe temperature of the indoor heat exchanger 5 rises to the preset temperature T... 内管2At this time, indoor fan 2 rotates at a preset speed V2 (speed V2 > speed V1) until it exits the anti-cold air logic after running for a period of time. If the set fan speed is greater than the preset speed V1 of indoor fan 2, then when the pipe temperature of indoor heat exchanger 5 rises to the preset temperature T... 内管2 At this time, the indoor fan 2 rotates at the set speed until it exits the anti-cold air logic after running for a period of time.

[0062] In step S150, the air conditioner is controlled to execute a preset outdoor unit-side control logic, controlling at least one of the following: the opening degree of the throttling device and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipes of the outdoor heat exchanger 6. This is to utilize the hot air from the compressor 8 to increase the overall pipe temperature of the outdoor heat exchanger 6 by means of refrigerant flow, thereby extending the overall heating operation time before the pipe temperature of the outdoor heat exchanger 6 reaches the defrost temperature, ultimately extending the heating operation cycle and improving user comfort.

[0063] The present invention proposes a method for controlling the heating and cold air prevention of an air conditioner. This method involves installing a baffle 4 at the air inlet of the air conditioner to open or close the air inlet of the indoor unit. An electric auxiliary heating device 3 is installed in the indoor unit. When the air conditioner is in heating mode, the electric auxiliary heating device 3 is activated, and the indoor fan 2 is reversed. This reverse rotation of the indoor fan 2 evenly blows the heat generated by the electric heating device onto the indoor heat exchanger 5 in the form of hot air. Simultaneously, the baffle 4 is controlled to close the air inlet, and the air guide plate 1 is opened to its minimum angle. By controlling the baffle 4 at the air inlet to close the air inlet and the air guide plate 1 at the air outlet to its minimum angle, a near-sealed space is formed. This allows the indoor heat exchanger 5 to rapidly increase its temperature through hot air transfer within the near-sealed space, reducing the waiting time for heating and cold air prevention and improving the user experience. Meanwhile, in the solution of the present invention, a bypass pipe is provided between the compressor 8 and the outdoor heat exchanger 6 to increase the pipe temperature of the outdoor heat exchanger 6 by means of the hot air after the compressor 8 is turned on through the refrigerant flow. The bypass pipe is connected to the flow path of the pipe temperature sensing bulb of the outdoor heat exchanger 6. When the hot air of the compressor 8 is transferred to the flow path of the outdoor heat exchanger 6, the pipe temperature of the outdoor heat exchanger 6 can be rapidly increased, which lengthens the whole unit operation time before the pipe temperature of the outdoor heat exchanger 6 reaches the defrost temperature, and ultimately lengthens the entire heating operation cycle, improving the comfort of the user experience.

[0064] In some embodiments, the specific process of controlling the air conditioner to execute a preset outdoor unit-side control logic in step S150, which controls at least one of the opening degree of the throttling device and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipeline of the outdoor heat exchanger 6, is described in the following exemplary description.

[0065] The following is combined Figure 5 The schematic diagram of an embodiment of the method of the present invention, which controls the air conditioner to execute a preset outdoor unit-side control logic to control at least one of the opening degree of the throttling device and the opening and closing of at least one of the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipeline of the outdoor heat exchanger 6, further illustrates the specific process of controlling the air conditioner to execute the preset outdoor unit-side control logic in step S150 to control at least one of the opening degree of the throttling device and the opening and closing of at least one of the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipeline of the outdoor heat exchanger 6, including steps S510 to S520.

[0066] In step S510, under the preset outdoor unit side control logic, at least one of the following is executed: control the opening degree of the throttling device to the maximum allowable opening degree of the throttling device, and control the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipeline of the outdoor heat exchanger 6 to open, so that the refrigerant discharged from the exhaust port of the compressor 8 can flow directly into at least a portion of the pipeline of the outdoor heat exchanger 6, so as to maximize the overall temperature of the outdoor heat exchanger 6.

[0067] Step S520: If it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, control the air conditioner to exit the preset outdoor unit side control logic as in step S240; wherein, when exiting the preset outdoor unit side control logic, at least one of the following is performed: control the opening degree of the throttling device to the set opening degree in the heating control logic of the air conditioner, and control the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least part of the pipeline of the outdoor heat exchanger 6 to close, so that all the refrigerant discharged from the exhaust port of the compressor 8 participates in the heating cycle of the heating control logic of the air conditioner.

[0068] Specifically, Figure 11 This is a schematic diagram of the control flow for the heating and cold air prevention stage of the outdoor unit of the air conditioner according to the present invention. Figure 11 As shown, the control process of the outdoor unit of the air conditioner of the present invention during the heating and cold air prevention stage includes:

[0069] Step 21: When the air conditioner starts heating, it enters the anti-cold air stage. After the compressor 8 starts, the electronic expansion valve 7 is opened to the maximum allowable value. At the same time, the three-way valve is opened, and the high-temperature and high-pressure refrigerant gas is discharged from the exhaust port of the compressor 8 and splits into two paths. One path flows through the four-way valve to the indoor heat exchanger 5 to condense and release heat into a higher-temperature refrigerant liquid. Since the electronic expansion valve 7 is opened to the maximum, no throttling or slight throttling is achieved, minimizing heat loss to the greatest extent. The residual heat of the refrigerant can be transferred to the outdoor heat exchanger 6 to raise the overall temperature of the outdoor heat exchanger 6 as much as possible. The other path of refrigerant from the compressor 8 goes directly to the flow path of the outdoor heat exchanger 6, and finally merges with the refrigerant participating in the heating cycle and returns to the compressor 8 to start the next working cycle. Then, proceed to step 22.

[0070] In step 21, the fully closed state of the electronic expansion valve 7 is divided into two types: fully closed with no flow and fully closed with flow. No throttling means the electronic expansion valve 7 is fully closed with no flow, while slight throttling means the electronic expansion valve 7 is fully closed with flow. In the control system of an air conditioner, if a low pulse flow is required, a fully closed valve with flow is generally selected, such as in a single-split air conditioner. For multi-split air conditioners, a fully closed type with no flow is generally selected. In the solution of this invention, after the compressor 8 starts, the electronic expansion valve 7 is opened to its maximum, achieving no or slight throttling, reducing heat loss. The hot air from the compressor 8 is used to increase the pipe temperature of the overall outdoor heat exchanger 6 through refrigerant flow, extending the overall heating operation time before the pipe temperature of the outdoor heat exchanger 6 reaches the defrost temperature, ultimately lengthening the heating operation cycle and improving user comfort.

[0071] Step 22: When the anti-cold air control logic meets the exit condition, that is, when the indoor fan 2 starts to stop reversing, the outdoor unit is linked to return to the normal heating mode, the opening of the electronic expansion valve 7 is reduced to the program-controlled opening value, and the three-way valve is controlled to close the bypass pipeline from the compressor 8 to the outdoor heat exchanger 6, so that all the refrigerant enters the heating cycle.

[0072] In some embodiments, the air conditioner control method of the present invention further includes: a process of determining whether it is necessary to exit the preset heating and anti-cold air control logic.

[0073] The following is combined Figure 2 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for determining whether it is necessary to exit the preset heating and anti-cold air control logic. It further illustrates the specific process of determining whether it is necessary to exit the preset heating and anti-cold air control logic, including steps S210 to S240.

[0074] Step S210: If the air conditioner has executed the preset indoor unit side control logic and / or the air conditioner has executed the preset outdoor unit side control logic, determine whether the air conditioner needs to exit the preset heating and anti-cold air control logic based on the current indoor pipe temperature of the air conditioner.

[0075] Step S220: If it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, then while the compressor 8 continues to run, control the air conditioner to exit the preset heating and anti-cold air control logic, that is, execute step S230 and / or step S240.

[0076] Step S230: If the air conditioner has executed the preset indoor unit side control logic, control the air conditioner to exit the preset indoor unit side control logic, and then control the indoor unit of the air conditioner to operate according to the heating control logic in the heating mode.

[0077] In some implementations, the specific process of controlling the air conditioner to exit the preset indoor unit-side control logic in step S230 is described in the following exemplary description.

[0078] The following is combined Figure 4 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for controlling the air conditioner to exit the preset indoor unit side control logic. It further illustrates the specific process of controlling the air conditioner to exit the preset indoor unit side control logic in step S230, including steps S410 to S430.

[0079] Step S410: When the current indoor pipe temperature of the air conditioner rises to the second set temperature, at least one of the following is executed when exiting the preset indoor unit side control logic: control the indoor fan 2 to stop reversing, control the action state of the baffle 4 to open the air inlet, control the opening angle of the air guide plate 1 to the default angle or the target angle of the air guide plate 1, and control the electric auxiliary heating device 3 to remain on when the current indoor ambient temperature of the air conditioner is lower than the preset indoor temperature, and control the electric auxiliary heating device 3 to turn off when the current indoor ambient temperature of the air conditioner is not lower than the preset indoor temperature, so as to exit the preset indoor unit side control logic.

[0080] Step S420: After exiting the preset indoor unit control logic, control the indoor fan 2 to turn on and run in forward rotation at the lowest fan speed. Here, the purpose of running at the lowest fan speed after exiting the anti-cold air logic is to avoid directly running at a higher fan speed, which would result in a large amount of cold air being introduced but not having enough time to be completely heated, and the blown air might still be cold, affecting comfort.

[0081] Step S430: Until the current indoor pipe temperature of the air conditioner is greater than or equal to the third set temperature, or the indoor fan 2 operates at its lowest fan speed for a period of time greater than or equal to the second set time, then control the indoor fan 2 to operate at its target fan speed. The target fan speed is the user-set fan speed. The second set time is the preset time M1.

[0082] Specifically, such as Figure 10 As shown, the control process of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage further includes:

[0083] Step 13: When the pipe temperature of the indoor heat exchanger 5 reaches the temperature at which the anti-cold air condition is deactivated, first control the indoor fan 2 to stop reversing, control the baffle 4 to open the air inlet, and set the air guide plate 1 to the default position or the air guide angle set by the user. If the detected indoor ambient temperature meets the conditions for opening the electric auxiliary heating device 3, then keep the electric auxiliary heating device 3 open; otherwise, control the electric auxiliary heating device 3 to close, and then proceed to step 14.

[0084] Step 14: After exiting the anti-cold air stage, control the indoor fan 2 to run in the positive direction at a low speed until the pipe temperature of the indoor heat exchanger 5 is greater than or equal to the preset temperature T of the indoor heat exchanger 5. 内管3 (Preset temperature T) 内管3 >Preset temperature T 内管2 >Preset temperature T 内管1 If either the running time is greater than or equal to the preset time M1, the indoor fan 2 will run at the set fan speed.

[0085] Step S240: If the air conditioner has executed the preset outdoor unit side control logic, control the air conditioner to exit the preset outdoor unit side control logic, and then control the outdoor unit of the air conditioner to operate according to the heating control logic in the heating mode.

[0086] The present invention utilizes the reverse rotation of the indoor fan 2 to evenly blow the heat generated by the electric heating device onto the indoor heat exchanger 5 in the form of hot air. Furthermore, by controlling the baffle 4 at the air inlet of the air conditioner to close the air inlet and the guide vane 1 at the air outlet to a minimum angle, a near-sealed space is formed. This allows the pipe temperature of the indoor heat exchanger 5 to rise rapidly, reducing the waiting time for the anti-cold air logic during heating and improving the user experience. This solves the problem of a poor user experience caused by the long waiting time for the anti-cold air logic to produce hot air during the initial stage of air conditioner startup in heating mode. Simultaneously, the hot air from the compressor 8, after startup, increases the pipe temperature of the outdoor heat exchanger 6 through the refrigerant flow, extending the overall operating time of the outdoor heat exchanger 6 before it reaches the defrost temperature. Ultimately, this extends the entire heating cycle, improving user comfort and solving the problem of short actual heating operation time due to the air conditioner starting defrost at the defrost temperature and the long anti-cold air waiting time, resulting in a short overall heating cycle and an uncomfortable user experience.

[0087] The technical solution of this embodiment involves installing a baffle 4 at the air inlet of the air conditioner to open or close the air inlet of the indoor unit. An electric auxiliary heating device 3 is installed in the indoor unit. When the air conditioner is in heating mode, the electric auxiliary heating device 3 is activated, and the indoor fan 2 is simultaneously reversed. The reverse rotation of the indoor fan 2 evenly blows the heat generated by the electric heating device onto the indoor heat exchanger 5 in the form of hot air. Furthermore, by controlling the baffle 4 at the air inlet to close the air inlet and the guide vane 1 at the air outlet to a minimum angle, a near-sealed space is formed, allowing for rapid... The pipe temperature of the indoor heat exchanger 5 is increased. At the same time, a bypass pipe is set between the compressor 8 and the outdoor heat exchanger 6. The hot air after the compressor 8 is turned on is used to increase the pipe temperature of the outdoor heat exchanger 6 through the refrigerant flow, so as to quickly increase the pipe temperature of the outdoor heat exchanger 6. Thus, when the air conditioner is turned on in heating mode, the pipe temperature of the indoor heat exchanger 5 is quickly increased to reduce the waiting time in the initial stage of the heating mode, and / or the pipe temperature of the outdoor heat exchanger 6 is quickly increased during the heating operation of the air conditioner to extend the heating time and improve the user experience.

[0088] According to an embodiment of the present invention, a control device for an air conditioner corresponding to a control method for an air conditioner is also provided. See also Figure 6 The diagram shows a structural schematic of an embodiment of the device of the present invention. The control device for this air conditioner may include: the air conditioner has an indoor unit and an outdoor unit; the indoor unit has an indoor heat exchanger 5, an indoor fan 2, an air inlet, and an air outlet; a baffle 4 is provided at the air inlet; a guide vane 1 is provided at the air outlet; and an electric auxiliary heating device 3 is provided between the indoor heat exchanger 5 and the indoor fan 2. Specifically, Figure 7 This is a schematic diagram of the structure of an embodiment of the indoor unit of the air conditioner of the present invention. Figure 7As shown, the indoor unit of the air conditioner of the present invention includes: an air inlet panel, an air outlet panel, an indoor fan 2, an electric auxiliary heating device 3, and an indoor heat exchanger 5. A baffle 4 is provided at the air inlet of the air inlet panel, which can open or close the air inlet of the indoor unit. An air guide plate 1 is provided at the air outlet of the air outlet panel, which is responsible for distributing the air outlet direction. The electric auxiliary heating device 3 is disposed between the indoor fan 2 and the indoor heat exchanger 5, and is used to heat the air passing through the electric auxiliary heating device 3. The electric auxiliary heating device 3 of the present invention uses a ceramic PTC electric heater with a non-uniform heating element distribution density. Since a higher density of heating elements results in greater heat generation, the density of the heating elements can be arranged according to the actual temperature conditions at different locations of the air outlet to balance the outlet temperature difference and make the outlet temperature more uniform.

[0089] In the present invention, the outdoor unit includes a compressor 8, an outdoor heat exchanger 6, and a throttling device (such as an electronic expansion valve 7). The refrigerant discharged from the exhaust port of the compressor 8 can be divided into two paths: one path passes through the indoor heat exchanger 5, the throttling device, and the outdoor heat exchanger 6; the other path passes directly through at least a portion of the piping of the outdoor heat exchanger 6. The outputs of the two paths then merge and return to the suction port of the compressor 8. Specifically, Figure 9 This is a schematic diagram of the refrigerant flow direction in the heating mode of the air conditioner of the present invention. Figure 9 As shown, the air conditioner of this invention, in addition to the indoor heat exchanger 5, also includes a compressor 8, a four-way valve, an electronic expansion valve 7, and an outdoor heat exchanger 6. The discharge port of the compressor 8 is connected to the first port of the three-way valve, and the second port of the three-way valve is connected to the first port of the four-way valve. The second port of the four-way valve, after passing through the indoor heat exchanger 5, the electronic expansion valve 7, and the outdoor heat exchanger 6, is connected to the fourth port of the four-way valve. The third port of the four-way valve is connected to the suction port of the compressor 8. A pipe containing a pipe temperature sensing bulb is placed in the coil of the outdoor heat exchanger 6 and is connected to the third port of the three-way valve. Figure 9 As shown, the compressor 8, four-way valve, indoor and outdoor heat exchangers (i.e., indoor heat exchanger 5 and outdoor heat exchanger 6), and electronic expansion valve 7 are connected by pipelines. The refrigerant flows within the pipelines and exchanges heat with the air in the indoor and outdoor heat exchangers, forming a refrigerant circulation loop to achieve cooling or heating of the air. In this invention, a refrigerant pipeline is also connected between the compressor 8 and the outdoor heat exchanger 6. One end of this refrigerant pipeline is connected to the exhaust pipeline of the compressor 8 via a three-way valve, and the other end is connected to a pipeline in the outdoor heat exchanger 6 where a pipe temperature sensor is placed. This allows the pipe temperature sensor to quickly and accurately detect changes in the pipe temperature of the outdoor heat exchanger 6 when the hot air from the compressor 8 flows through the refrigerant into the outdoor heat exchanger 6.

[0090] In the solution of the present invention, such as Figure 6As shown, the control device of the air conditioner includes: an acquisition unit 102 and a control unit 104.

[0091] The acquisition unit 102 is configured to, when the air conditioner is turned on and starts operating in heating mode, acquire the indoor ambient temperature of the environment where the air conditioner is located, and record it as the current indoor ambient temperature of the air conditioner; and acquire the pipe temperature of the indoor heat exchanger 5, and record it as the current indoor pipe temperature of the air conditioner. The specific functions and processing of the acquisition unit 102 are described in step S110.

[0092] The control unit 104 is configured to determine whether the air conditioner needs to enter a preset heating and anti-cold air control logic based on the current indoor ambient temperature and the current internal pipe temperature of the air conditioner. The specific functions and processing of this control unit 104 are described in step S120.

[0093] The control unit 104 is further configured to, if it is determined that the air conditioner needs to enter a preset heating and anti-cold air control logic, then after the compressor 8 starts and runs, control the air conditioner to enter the preset heating and anti-cold air control logic, i.e., execute step S140 and / or step S150. The specific functions and processing of this control unit 104 are further described in step S130.

[0094] The control unit 104 is also configured to control the air conditioner to execute preset indoor unit-side control logic, controlling at least one of the following: the operating state of the baffle 4, the opening angle of the air guide plate 1, the opening and closing of the electric auxiliary heating device 3, and the rotation speed of the indoor fan 2. This allows the indoor heat exchanger 5 to rapidly increase the temperature in a near-sealed space through hot air transfer, reducing the waiting time for heating and preventing cold air from entering, and improving the user experience. The specific functions and processing of the control unit 104 are further described in step S140.

[0095] In some embodiments, the control unit 104 controls the air conditioner to execute preset indoor unit-side control logic, controlling at least one of the following: the operation state of the baffle 4, the opening angle of the air guide plate 1, the on / off state of the electric auxiliary heating device 3, and the rotation speed of the indoor fan 2. Specifically, the control unit 104 is further configured to, under the preset indoor unit-side control logic, execute at least one of the following: control the operation state of the baffle 4 to close the air inlet, control the opening angle of the air guide plate 1 to open to a preset minimum opening angle, control the electric auxiliary heating device 3 to turn on, and control the indoor fan 2 to turn on and reverse, so as to evenly blow hot air to the indoor heat exchanger 5 to rapidly increase the pipe temperature of the indoor heat exchanger 5. Figure 7In the example shown, a baffle 4 is installed at the air inlet as an auxiliary control method to achieve the heating and cold air prevention function. Generally, central air conditioners have air valves at their air inlets, while household air conditioners generally do not use air valves; the air valve and the baffle 4 have similar functions, the air valve regulates the air volume, and opening and closing the baffle 4 controls the air intake of the air conditioner. Figure 8 This is a schematic diagram of the assembly structure of the baffle at the air inlet of the indoor unit of the air conditioner of the present invention, wherein (a) is a schematic diagram of the assembly structure of the air inlet and the baffle of the indoor unit, and (b) is a partial structural schematic diagram of the baffle. Figure 8 As shown, the baffle 4 can be a structure similar to a grille. The baffle 4 can be opened and closed by the transmission link 9. The transmission link 9 has an actuator connected to the controller of the air conditioner. The actuator is used to control the opening and closing (i.e., opening and closing) of the baffle 4 under the control of the controller of the air conditioner.

[0096] Specifically, Figure 10 This is a schematic diagram of the control flow for the heating and cold air prevention stage of the indoor unit of the air conditioner according to the present invention. Figure 10 As shown, the control process of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage includes:

[0097] Step 11: When the air conditioner is turned on and running in heating mode, real-time operating parameter information such as indoor ambient temperature and pipe temperature of indoor heat exchanger 5 is obtained, and then step 12 is executed.

[0098] Step 12: When the indoor ambient temperature and the pipe temperature of the indoor heat exchanger 5 reach the preset temperature conditions for the anti-cold air stage, the anti-cold air stage is entered. The control baffle 4 closes the air inlet, the air guide plate 1 opens to its minimum angle when the air guide plate 1 is open, the electric auxiliary heating device 3 is activated, and the indoor fan 2 is controlled to reverse, blowing hot air evenly onto the indoor heat exchanger 5 to quickly increase the pipe temperature of the indoor heat exchanger 5. Then, step 13 is executed. Note that the minimum angle when the air guide plate 1 is open refers to the minimum angle when the air guide plate 1 is open, excluding 0°, to avoid misleading users into thinking that the air conditioner is malfunctioning.

[0099] In some embodiments, the control unit 104 controls the indoor fan 2 to turn on and reverse, including:

[0100] The control unit 104 is further configured to, after the indoor fan 2 is turned on, first control the indoor fan 2 to reverse its operation to the lowest fan speed. The specific functions and processing of this control unit 104 are further described in step S310.

[0101] The control unit 104 is further configured to control the indoor fan 2 to reverse operation at a first set speed only after the current indoor pipe temperature of the air conditioner rises to a first set temperature; the first set speed is greater than the speed corresponding to the lowest fan speed of the indoor fan 2. The specific functions and processing of the control unit 104 are further described in step S320. The first set temperature is such as the preset temperature T. 内管1 .

[0102] The control unit 104 is further configured to control the indoor fan 2 to operate at a second set speed or in reverse at a target fan speed only after the current indoor pipe temperature of the air conditioner rises to a second set temperature; wherein the second set speed is greater than the first set speed. The specific functions and processing of the control unit 104 are further described in step S330. The second set temperature is such as the preset temperature T. 内管2 .

[0103] Specifically, such as Figure 10 As shown, the control process of the heating and cold air prevention stage of the indoor unit of the air conditioner of the present invention further includes: In step 12, the rotation speed of the indoor fan 2 changes with the pipe temperature of the indoor heat exchanger 5. When the indoor fan 2 is turned on, it initially operates at the lowest fan speed to avoid the problem that the pipe temperature of the indoor heat exchanger 5 will drop instead of rise due to excessive airflow caused by directly operating at a higher set fan speed. As the pipe temperature of the indoor heat exchanger 5 increases, when the pipe temperature of the indoor heat exchanger 5 rises to the preset temperature T... 内管1 At that time, the indoor fan 2 rotates at a preset speed V1, which is higher than the lowest fan speed; when the pipe temperature of the indoor heat exchanger 5 rises to the preset temperature T... 内管2 At this time, the indoor fan 2 is adjusted to the set fan speed at the preset speed V1, provided that the speed of the set fan speed is greater than the preset speed V1 of the indoor fan 2.

[0104] In some embodiments, the control unit 104 controls the indoor fan 2 to operate at a second set speed or in reverse at a target fan speed, including any of the following control scenarios:

[0105] The first control scenario: The control unit 104 is further configured to, when the indoor fan 2 is running in reverse at a first set speed, until the current indoor pipe temperature of the air conditioner rises to a second set temperature, if the speed corresponding to the target fan speed of the indoor fan 2 is less than or equal to the first set speed, then control the indoor fan 2 to run in reverse at the second set speed. After a first set time, it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, and the air conditioner is controlled to exit the preset indoor unit side control logic as in step S230.

[0106] The second control scenario: The control unit 104 is further configured to, when the indoor fan 2 is running in reverse at the first set speed, until the current indoor pipe temperature of the air conditioner rises to the second set temperature, if the speed corresponding to the target fan speed of the indoor fan 2 is greater than the first set speed, then control the indoor fan 2 to run in reverse at the target fan speed of the indoor fan 2, and after a first set time, determine that the air conditioner needs to exit the preset heating and anti-cold air control logic, and control the air conditioner to exit the preset indoor unit side control logic as in step S230.

[0107] Specifically, such as Figure 10 As shown, the control process of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage further includes: in step 12, if the speed of the set fan is less than or equal to the preset speed V1 of the indoor fan 2, then when the pipe temperature of the indoor heat exchanger 5 rises to the preset temperature T... 内管2 At this time, indoor fan 2 rotates at a preset speed V2 (speed V2 > speed V1) until it exits the anti-cold air logic after running for a period of time. If the set fan speed is greater than the preset speed V1 of indoor fan 2, then when the pipe temperature of indoor heat exchanger 5 rises to the preset temperature T... 内管2 At this time, the indoor fan 2 rotates at the set speed until it exits the anti-cold air logic after running for a period of time.

[0108] The control unit 104 is also configured to control the air conditioner to execute preset outdoor unit-side control logic, controlling at least one of the following: the opening degree of the throttling device, and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipes of the outdoor heat exchanger 6. This is to utilize the hot air from the compressor 8 to increase the overall pipe temperature of the outdoor heat exchanger 6 through refrigerant flow, thereby extending the overall heating operation time before the pipe temperature of the outdoor heat exchanger 6 reaches the defrost temperature, ultimately lengthening the heating operation cycle and improving user comfort. The specific functions and processing of this control unit 104 are further described in step S150.

[0109] The present invention proposes a heating and cold air prevention control device for an air conditioner. A baffle 4 is installed at the air inlet of the air conditioner to open or close the air inlet of the indoor unit. An electric auxiliary heating device 3 is installed in the indoor unit. When the air conditioner is in heating mode, the electric auxiliary heating device 3 is activated, and the indoor fan 2 is reversed. The reverse rotation of the indoor fan 2 evenly blows the heat generated by the electric heating device onto the indoor heat exchanger 5 in the form of hot air. Simultaneously, the baffle 4 is controlled to close the air inlet of the air conditioner, and the air guide plate 1 is opened to its minimum angle. By controlling the baffle 4 at the air inlet to close the air inlet and the air guide plate 1 at the air outlet to its minimum angle, a near-sealed space is formed. This allows the indoor heat exchanger 5 to rapidly increase its temperature through hot air transfer in the near-sealed space, reducing the waiting time for heating and cold air prevention and improving the user experience. Meanwhile, in the solution of the present invention, a bypass pipe is provided between the compressor 8 and the outdoor heat exchanger 6 to increase the pipe temperature of the outdoor heat exchanger 6 by means of the hot air after the compressor 8 is turned on through the refrigerant flow. The bypass pipe is connected to the flow path of the pipe temperature sensing bulb of the outdoor heat exchanger 6. When the hot air of the compressor 8 is transferred to the flow path of the outdoor heat exchanger 6, the pipe temperature of the outdoor heat exchanger 6 can be rapidly increased, which lengthens the whole unit operation time before the pipe temperature of the outdoor heat exchanger 6 reaches the defrost temperature, and ultimately lengthens the entire heating operation cycle, improving the comfort of the user experience.

[0110] In some embodiments, the control unit 104 controls the air conditioner to execute preset outdoor unit-side control logic, controlling at least one of the following: the opening degree of the throttling device and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the piping of the outdoor heat exchanger 6, including:

[0111] The control unit 104 is further configured to, under the preset outdoor unit-side control logic, perform at least one of the following: control the opening degree of the throttling device to the maximum allowable opening degree of the throttling device; control the opening of the refrigerant flow branch directly connecting the discharge port of the compressor 8 and at least a portion of the piping of the outdoor heat exchanger 6, so that the refrigerant discharged from the discharge port of the compressor 8 flows directly into at least a portion of the piping of the outdoor heat exchanger 6, thereby maximizing the overall temperature of the outdoor heat exchanger 6. The specific functions and processing of this control unit 104 are further described in step S510.

[0112] The control unit 104 is further configured to, upon determining that the air conditioner needs to exit the preset heating and anti-cold air control logic, control the air conditioner to exit the preset outdoor unit-side control logic as described in step S240; wherein, when exiting the preset outdoor unit-side control logic, at least one of the following is performed: controlling the opening degree of the throttling device to the set opening degree in the heating control logic of the air conditioner, and controlling the refrigerant flow branch directly connected between the exhaust port of the compressor 8 and at least a portion of the pipes of the outdoor heat exchanger 6 to close, so that all the refrigerant discharged from the exhaust port of the compressor 8 participates in the heating cycle of the heating control logic of the air conditioner. The specific functions and processing of this control unit 104 are also described in step S520.

[0113] Specifically, Figure 11 This is a schematic diagram of the control flow for the heating and cold air prevention stage of the outdoor unit of the air conditioner according to the present invention. Figure 11 As shown, the control process of the outdoor unit of the air conditioner of the present invention during the heating and cold air prevention stage includes:

[0114] Step 21: When the air conditioner starts heating, it enters the anti-cold air stage. After the compressor 8 starts, the electronic expansion valve 7 is opened to the maximum allowable value. At the same time, the three-way valve is opened, and the high-temperature and high-pressure refrigerant gas is discharged from the exhaust port of the compressor 8 and splits into two paths. One path flows through the four-way valve to the indoor heat exchanger 5 to condense and release heat into a higher-temperature refrigerant liquid. Since the electronic expansion valve 7 is opened to the maximum, no throttling or slight throttling is achieved, minimizing heat loss to the greatest extent. The residual heat of the refrigerant can be transferred to the outdoor heat exchanger 6 to raise the overall temperature of the outdoor heat exchanger 6 as much as possible. The other path of refrigerant from the compressor 8 goes directly to the flow path of the outdoor heat exchanger 6, and finally merges with the refrigerant participating in the heating cycle and returns to the compressor 8 to start the next working cycle. Then, proceed to step 22.

[0115] In step 21, the fully closed state of the electronic expansion valve 7 is divided into two types: fully closed with no flow and fully closed with flow. No throttling means the electronic expansion valve 7 is fully closed with no flow, while slight throttling means the electronic expansion valve 7 is fully closed with flow. In the control system of an air conditioner, if a low pulse flow is required, a fully closed valve with flow is generally selected, such as in a single-split air conditioner. For multi-split air conditioners, a fully closed type with no flow is generally selected. In the solution of this invention, after the compressor 8 starts, the electronic expansion valve 7 is opened to its maximum, achieving no or slight throttling, reducing heat loss. The hot air from the compressor 8 is used to increase the pipe temperature of the overall outdoor heat exchanger 6 through refrigerant flow, extending the overall heating operation time before the pipe temperature of the outdoor heat exchanger 6 reaches the defrost temperature, ultimately lengthening the heating operation cycle and improving user comfort.

[0116] Step 22: When the anti-cold air control logic meets the exit condition, that is, when the indoor fan 2 starts to stop reversing, the outdoor unit is linked to return to the normal heating mode, the opening of the electronic expansion valve 7 is reduced to the program-controlled opening value, and the three-way valve is controlled to close the bypass pipeline from the compressor 8 to the outdoor heat exchanger 6, so that all the refrigerant enters the heating cycle.

[0117] In some embodiments, the air conditioner control method of the present invention further includes: a process of determining whether it is necessary to exit the preset heating and anti-cold air control logic, as follows:

[0118] The control unit 104 is further configured to, when the air conditioner has executed the preset indoor unit-side control logic and / or the air conditioner has executed the preset outdoor unit-side control logic, determine, based on the current indoor pipe temperature of the air conditioner, whether the air conditioner needs to exit the preset heating and anti-cold air control logic. The specific functions and processing of this control unit 104 are further described in step S210.

[0119] The control unit 104 is further configured to, if it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, then, while the compressor 8 continues to run, control the air conditioner to exit the preset heating and anti-cold air control logic, i.e., execute step S230 and / or step S240. The specific functions and processing of this control unit 104 are further described in step S220.

[0120] The control unit 104 is further configured to, when the air conditioner has executed the preset indoor unit-side control logic, control the air conditioner to exit the preset indoor unit-side control logic, and then control the indoor unit of the air conditioner to operate according to the heating control logic in the heating mode. The specific functions and processing of this control unit 104 are further described in step S230.

[0121] In some embodiments, the control unit 104 controls the air conditioner to exit the preset indoor unit-side control logic, including:

[0122] The control unit 104 is further configured to, when the current indoor pipe temperature of the air conditioner rises to the second set temperature and the preset indoor unit side control logic is exited, execute at least one of the following: control the indoor fan 2 to stop reversing, control the action state of the baffle 4 to open the air inlet, control the opening angle of the air guide plate 1 to the default angle or the target angle of the air guide plate 1, and control the electric auxiliary heating device 3 to remain on when the current indoor ambient temperature of the air conditioner is lower than the preset indoor temperature, and control the electric auxiliary heating device 3 to turn off when the current indoor ambient temperature of the air conditioner is not lower than the preset indoor temperature, thereby exiting the preset indoor unit side control logic. The specific functions and processing of this control unit 104 are also described in step S410.

[0123] The control unit 104 is further configured to, after exiting the preset indoor unit-side control logic, control the indoor fan 2 to turn on and operate in forward rotation at the lowest fan speed. The specific functions and processing of the control unit 104 are further described in step S420.

[0124] The control unit 104 is further configured to control the indoor fan 2 to operate at its target fan speed until the current indoor pipe temperature of the air conditioner is greater than or equal to a third set temperature or the time the indoor fan 2 operates at its lowest fan speed is greater than or equal to a second set time. The specific functions and processing of this control unit 104 are further described in step S430. The target fan speed of the indoor fan 2 is the user-set fan speed. The second set time is a preset time M1.

[0125] Specifically, such as Figure 10 As shown, the control process of the indoor unit of the air conditioner of the present invention during the heating and cold air prevention stage further includes:

[0126] Step 13: When the pipe temperature of the indoor heat exchanger 5 reaches the temperature at which the anti-cold air condition is deactivated, first control the indoor fan 2 to stop reversing, control the baffle 4 to open the air inlet, and set the air guide plate 1 to the default position or the air guide angle set by the user. If the detected indoor ambient temperature meets the conditions for opening the electric auxiliary heating device 3, then keep the electric auxiliary heating device 3 open; otherwise, control the electric auxiliary heating device 3 to close, and then proceed to step 14.

[0127] Step 14: After exiting the anti-cold air stage, control the indoor fan 2 to run in the positive direction at a low speed until the pipe temperature of the indoor heat exchanger 5 is greater than or equal to the preset temperature T of the indoor heat exchanger 5. 内管3 (Preset temperature T) 内管3 >Preset temperature T 内管2 >Preset temperature T 内管1If either the running time is greater than or equal to the preset time M1, the indoor fan 2 will run at the set fan speed.

[0128] The control unit 104 is further configured to, when the air conditioner has executed the preset outdoor unit-side control logic, control the air conditioner to exit the preset outdoor unit-side control logic, and then control the outdoor unit of the air conditioner to operate according to the heating control logic in the heating mode. For the specific functions and processing of this control unit 104, please refer to step S240.

[0129] The present invention utilizes the reverse rotation of the indoor fan 2 to evenly blow the heat generated by the electric heating device onto the indoor heat exchanger 5 in the form of hot air. Furthermore, by controlling the baffle 4 at the air inlet of the air conditioner to close the air inlet and the guide vane 1 at the air outlet to a minimum angle, a near-sealed space is formed. This allows the pipe temperature of the indoor heat exchanger 5 to rise rapidly, reducing the waiting time for the anti-cold air logic during heating and improving the user experience. This solves the problem of a poor user experience caused by the long waiting time for the anti-cold air logic to produce hot air during the initial stage of air conditioner startup in heating mode. Simultaneously, the hot air from the compressor 8, after startup, increases the pipe temperature of the outdoor heat exchanger 6 through the refrigerant flow, extending the overall operating time of the outdoor heat exchanger 6 before it reaches the defrost temperature. Ultimately, this extends the entire heating cycle, improving user comfort and solving the problem of short actual heating operation time due to the air conditioner starting defrost at the defrost temperature and the long anti-cold air waiting time, resulting in a short overall heating cycle and an uncomfortable user experience.

[0130] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0131] By adopting the technical solution of the present invention, a baffle 4 that can open or close the air inlet of the indoor unit is provided at the air inlet of the air conditioner, and an electric auxiliary heating device 3 is provided in the indoor unit. When the air conditioner is turned on in heating mode, the electric auxiliary heating device 3 is turned on and the indoor fan 2 is controlled to reverse. The reverse rotation of the indoor fan 2 is used to blow the heat generated by the electric heating device evenly to the indoor heat exchanger 5 in the form of hot air. The baffle 4 at the air inlet of the air conditioner is controlled to close the air inlet and the air guide plate 1 at the air outlet is opened at the minimum angle to form a near-sealed space. At the same time, a bypass pipe is provided between the compressor 8 and the outdoor heat exchanger 6. The hot air after the compressor 8 is turned on is used to increase the pipe temperature of the outdoor heat exchanger 6 by the refrigerant flow. This allows the pipe temperature of the indoor heat exchanger 5 and the pipe temperature of the outdoor heat exchanger 6 to be increased rapidly, reducing the waiting time for heating and preventing cold air, and improving the user experience.

[0132] According to an embodiment of the present invention, an air conditioner corresponding to a control device for an air conditioner is also provided. This air conditioner may include the control device for an air conditioner described above.

[0133] Since the processing and functions implemented by the air conditioner in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned devices, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0134] By adopting the technical solution of the present invention, a baffle 4 that can open or close the air inlet of the indoor unit is provided at the air inlet of the air conditioner, and an electric auxiliary heating device 3 is provided in the indoor unit. When the air conditioner is turned on in heating mode, the electric auxiliary heating device 3 is turned on and the indoor fan 2 is controlled to reverse. The reverse rotation of the indoor fan 2 is used to blow the heat generated by the electric heating device evenly to the indoor heat exchanger 5 in the form of hot air. Furthermore, by controlling the baffle 4 at the air inlet of the air conditioner to close the air inlet and the guide plate 1 at the air outlet to the minimum angle, a near-sealed space is formed. At the same time, a bypass pipe is provided between the compressor 8 and the outdoor heat exchanger 6. The hot air after the compressor 8 is turned on is used to increase the pipe temperature of the outdoor heat exchanger 6 by the refrigerant flow, thereby reducing the waiting time in the initial stage of the heating mode and improving the user experience.

[0135] According to an embodiment of the present invention, a storage medium corresponding to a control method for an air conditioner is also provided, the storage medium including a stored program, wherein the program controls the device where the storage medium is located to execute the control method for the air conditioner described above when it is executed.

[0136] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0137] By adopting the technical solution of the present invention, a baffle 4 that can open or close the air inlet of the indoor unit is provided at the air inlet of the air conditioner, and an electric auxiliary heating device 3 is provided in the indoor unit. When the air conditioner is turned on in heating mode, the electric auxiliary heating device 3 is turned on and the indoor fan 2 is controlled to reverse. The reverse rotation of the indoor fan 2 is used to blow the heat generated by the electric heating device evenly to the indoor heat exchanger 5 in the form of hot air. Furthermore, by controlling the baffle 4 at the air inlet of the air conditioner to close the air inlet and the guide plate 1 at the air outlet to the minimum angle, a near-sealed space is formed. At the same time, a bypass pipe is provided between the compressor 8 and the outdoor heat exchanger 6. The hot air after the compressor 8 is turned on is used to increase the pipe temperature of the outdoor heat exchanger 6 by the refrigerant flow, thereby improving the user experience and solving the problem of poor user experience caused by the long waiting time for the air conditioner to produce hot air due to the anti-cold air logic in the initial stage of the air conditioner's operation in heating mode.

[0138] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0139] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner has an indoor unit and an outdoor unit. The indoor unit has an indoor heat exchanger (5), an indoor fan (2), an air inlet, and an air outlet. A baffle (4) is provided at the air inlet, and a guide plate (1) is provided at the air outlet. An electric auxiliary heating device (3) is provided between the indoor heat exchanger (5) and the indoor fan (2). The outdoor unit has a compressor (8), an outdoor heat exchanger (6), and a throttling device. The refrigerant discharged from the exhaust port of the compressor (8) can be divided into two paths: one path can pass through the indoor heat exchanger (5), the throttling device, and the outdoor heat exchanger (6), and the other path can directly pass through at least part of the pipeline of the outdoor heat exchanger (6). After the outputs of the two paths merge, they can return to the suction port of the compressor (8). The control method of the air conditioner includes: When the air conditioner is turned on and starts running in heating mode, the indoor ambient temperature of the environment where the air conditioner is located is obtained and recorded as the current indoor ambient temperature of the air conditioner; and the pipe temperature of the indoor heat exchanger (5) is obtained and recorded as the current indoor pipe temperature of the air conditioner. Based on the current indoor ambient temperature of the air conditioner and the current internal pipe temperature of the air conditioner, determine whether the air conditioner needs to enter the preset heating and anti-cold air control logic; If it is determined that the air conditioner needs to enter the preset heating and anti-cold air control logic, then after the compressor (8) starts and runs, the air conditioner is controlled to enter the preset heating and anti-cold air control logic, so as to: The air conditioner is controlled to execute preset indoor unit-side control logic, controlling at least one of the following: the operation state of the baffle (4), the opening angle of the air guide plate (1), the opening and closing of the electric auxiliary heating device (3), and the rotational speed of the indoor fan (2); and / or, The air conditioner is controlled to execute a preset outdoor unit-side control logic, which controls at least one of the following: the opening degree of the throttling device and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor (8) and at least a portion of the pipeline of the outdoor heat exchanger (6).

2. The control method for an air conditioner according to claim 1, characterized in that, Also includes: If the air conditioner has executed the preset indoor unit side control logic and / or the air conditioner has executed the preset outdoor unit side control logic, determine whether the air conditioner needs to exit the preset heating and anti-cold air control logic based on the current indoor pipe temperature of the air conditioner. If it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, then while the compressor (8) continues to run, the air conditioner is controlled to exit the preset heating and anti-cold air control logic: If the air conditioner has already executed the preset indoor unit-side control logic, control the air conditioner to exit the preset indoor unit-side control logic, and then control the indoor unit of the air conditioner to operate according to the heating control logic in heating mode; and / or, When the air conditioner has executed the preset outdoor unit side control logic, the air conditioner is controlled to exit the preset outdoor unit side control logic, and then the outdoor unit of the air conditioner is controlled to operate according to the heating control logic in the heating mode.

3. The control method for an air conditioner according to claim 1 or 2, characterized in that, Controlling the air conditioner to execute preset indoor unit-side control logic, including controlling at least one of the following: the operation state of the baffle (4), the opening angle of the air guide plate (1), the opening and closing of the electric auxiliary heating device (3), and the rotation speed of the indoor fan (2), including: Under the preset indoor unit side control logic, at least one of the following is executed: control the action state of the baffle (4) to close the air inlet, control the opening angle of the air guide plate (1) to open to the preset minimum opening angle, control the electric auxiliary heating device (3) to turn on, and control the indoor fan (2) to turn on and reverse.

4. The control method for an air conditioner according to claim 3, characterized in that, Controlling the indoor fan (2) to turn on and reverse includes: After the indoor fan (2) is turned on, the indoor fan (2) is first controlled to reverse at the lowest wind speed. Until the current internal pipe temperature of the air conditioner rises to the first set temperature, the indoor fan (2) is controlled to reverse and run at the first set speed; the first set speed is greater than the speed corresponding to the lowest fan speed of the indoor fan (2); Until the current internal pipe temperature of the air conditioner rises to the second set temperature, the indoor fan (2) is controlled to run in reverse at the second set speed or at the target fan speed of the indoor fan (2); wherein the second set speed is greater than the first set speed.

5. The control method for an air conditioner according to claim 4, characterized in that, Controlling the indoor fan (2) to operate at a second set speed or in reverse at the target fan speed includes: If the rotation speed corresponding to the target wind speed of the indoor fan (2) is less than or equal to the first set rotation speed, the indoor fan (2) is controlled to reverse at the second set rotation speed. After the first set time, it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, and the air conditioner is controlled to exit the preset indoor unit side control logic. If the rotation speed corresponding to the target fan speed of the indoor fan (2) is greater than the first set speed, the indoor fan (2) is controlled to reverse at the target fan speed. After a first set time, it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, and the air conditioner is controlled to exit the preset indoor unit side control logic.

6. The control method for an air conditioner according to claim 5, characterized in that, Controlling the air conditioner to exit the preset indoor unit-side control logic includes: When exiting the preset indoor unit side control logic, execute at least one of the following: control the indoor fan (2) to stop reversing, control the action state of the baffle (4) to open the air inlet, control the opening angle of the air guide (1) to the default angle or the target angle of the air guide (1), and control the electric auxiliary heating device (3) to remain on when the current indoor ambient temperature of the air conditioner is lower than the preset indoor temperature, and control the electric auxiliary heating device (3) to be turned off when the current indoor ambient temperature of the air conditioner is not lower than the preset indoor temperature, so as to exit the preset indoor unit side control logic; Control the indoor fan (2) to turn on and run in the forward direction at the lowest fan speed; Until the current internal pipe temperature of the air conditioner is greater than or equal to the third set temperature or the indoor fan (2) runs at the lowest fan speed for a period of time greater than or equal to the second set time, the indoor fan (2) is controlled to run at the target fan speed.

7. The control method for an air conditioner according to claim 5, characterized in that, Controlling the air conditioner to execute preset outdoor unit-side control logic, including controlling at least one of the following: the opening degree of the throttling device and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor (8) and at least a portion of the pipeline of the outdoor heat exchanger (6), including: Under the preset outdoor unit side control logic, at least one of the following is executed: control the opening degree of the throttling device to the maximum allowable opening degree of the throttling device, control the opening of the refrigerant flow branch directly connected between the exhaust port of the compressor (8) and at least a part of the pipeline of the outdoor heat exchanger (6), so that the refrigerant discharged from the exhaust port of the compressor (8) can flow directly into at least a part of the pipeline of the outdoor heat exchanger (6); When it is determined that the air conditioner needs to exit the preset heating and anti-cold air control logic, the air conditioner is controlled to exit the preset outdoor unit side control logic; wherein, when exiting the preset outdoor unit side control logic, at least one of the following is executed: the opening degree of the throttling device is controlled to be set to the opening degree in the heating control logic of the air conditioner, and the refrigerant flow branch directly connected between the exhaust port of the compressor (8) and at least part of the pipeline of the outdoor heat exchanger (6) is closed, so that all the refrigerant discharged from the exhaust port of the compressor (8) participates in the heating cycle of the heating control logic of the air conditioner.

8. A control device for an air conditioner, characterized in that, The air conditioner has an indoor unit and an outdoor unit. The indoor unit has an indoor heat exchanger (5), an indoor fan (2), an air inlet, and an air outlet. A baffle (4) is provided at the air inlet, and a guide plate (1) is provided at the air outlet. An electric auxiliary heating device (3) is provided between the indoor heat exchanger (5) and the indoor fan (2). The outdoor unit has a compressor (8), an outdoor heat exchanger (6), and a throttling device. The refrigerant discharged from the exhaust port of the compressor (8) can be divided into two paths: one path can pass through the indoor heat exchanger (5), the throttling device, and the outdoor heat exchanger (6), and the other path can directly pass through at least part of the pipeline of the outdoor heat exchanger (6). After the outputs of the two paths merge, they can return to the suction port of the compressor (8). The control device of the air conditioner includes: The acquisition unit is configured to acquire the indoor ambient temperature of the environment where the air conditioner is located when the air conditioner is turned on and starts running the heating mode, and record it as the current indoor ambient temperature of the air conditioner; and acquire the pipe temperature of the indoor heat exchanger (5), and record it as the current inner pipe temperature of the air conditioner. The control unit is configured to determine whether the air conditioner needs to enter a preset heating and anti-cold air control logic based on the current indoor ambient temperature of the air conditioner and the current internal pipe temperature of the air conditioner. The control unit is further configured to, if it is determined that the air conditioner needs to enter a preset heating and anti-cold air control logic, control the air conditioner to enter the preset heating and anti-cold air control logic after the compressor (8) starts and runs, so as to: The control unit is further configured to control the air conditioner to execute preset indoor unit-side control logic, controlling at least one of the following: the operating state of the baffle (4), the opening angle of the air guide plate (1), the opening and closing of the electric auxiliary heating device (3), and the rotational speed of the indoor fan (2); and / or, The control unit is further configured to control the air conditioner to execute a preset outdoor unit-side control logic, controlling at least one of the opening degree of the throttling device and the opening and closing of the refrigerant flow branch directly connected between the exhaust port of the compressor (8) and at least a portion of the pipeline of the outdoor heat exchanger (6).

9. An air conditioner, characterized in that, include: The control device for an air conditioner as described in claim 8.

10. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the control method of the air conditioner according to any one of claims 1 to 7.

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