CN109883003B - Control method of air conditioner, air conditioner and computer readable storage medium - Google Patents
Control method of air conditioner, air conditioner and computer readable storage medium Download PDFInfo
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- CN109883003B CN109883003B CN201910175876.2A CN201910175876A CN109883003B CN 109883003 B CN109883003 B CN 109883003B CN 201910175876 A CN201910175876 A CN 201910175876A CN 109883003 B CN109883003 B CN 109883003B
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Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: the method comprises the steps that in the process of low-temperature high-frequency heating of an air conditioner, the operating frequency of a compressor of the air conditioner is obtained; and when the running frequency of the compressor is greater than or equal to a first preset frequency, increasing the opening degree of an electronic expansion valve of the air conditioner and/or reducing the frequency increasing speed of the compressor. The invention also discloses an air conditioner and a computer readable storage medium. According to the invention, when the air conditioner is in a low-temperature high-frequency heating mode, the heating capacity is improved in a frequency lifting mode, and the condition that the air conditioner is stopped or frequency-limited protection is avoided.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a method for controlling an air conditioner, and a computer-readable storage medium.
Background
When the outdoor temperature is low, the condenser cannot absorb enough heat to heat, so that the heating output of the air conditioner is insufficient. In the prior art, the heating performance of the air conditioner in a low-temperature environment can be improved by a method of supplementing air and increasing enthalpy, but the method needs to add complex pipelines and components, so that the cost is increased; or the frequency is raised on the basis of the existing system, but the method is easy to cause the air conditioner to stop or carry out frequency limiting protection.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method of an air conditioner, the air conditioner and a computer readable storage medium, and aims to improve the heating capacity in a frequency lifting mode when the air conditioner is in a low-temperature high-frequency heating mode and avoid the condition of shutdown or frequency-limiting protection of the air conditioner.
In order to achieve the above object, the present invention provides a method for controlling an air conditioner, comprising the steps of:
the method comprises the steps that in the process of low-temperature high-frequency heating of an air conditioner, the operating frequency of a compressor of the air conditioner is obtained;
and when the running frequency of the compressor is greater than or equal to a first preset frequency, increasing the opening degree of an electronic expansion valve of the air conditioner and/or reducing the frequency increasing speed of the compressor.
Optionally, when a preset condition is met, it is determined that the air conditioner enters low-temperature high-frequency heating, where the preset condition includes at least two of:
the indoor temperature of the air conditioner acting space is less than or equal to the preset indoor temperature;
the rotating speed of a fan of the air conditioner is greater than or equal to a preset rotating speed;
the outdoor temperature of the air conditioner acting space is less than or equal to the preset outdoor temperature.
Optionally, the step of increasing the opening degree of the electronic expansion valve of the air conditioner includes:
and increasing the opening degree of the electronic expansion valve to a target opening degree.
Optionally, the step of reducing the up-conversion speed of the compressor comprises:
and reducing the frequency increasing speed of the compressor to the target frequency increasing speed.
Optionally, after increasing the opening degree of an electronic expansion valve of the air conditioner and/or decreasing the frequency increasing speed of the compressor, the method further includes:
judging whether the running frequency of the compressor is greater than or equal to a second preset frequency, wherein the second preset frequency is greater than the first preset frequency;
and when the running frequency of the compressor is greater than or equal to the second preset frequency, reducing the opening degree of the electronic expansion valve.
Optionally, after increasing the opening degree of an electronic expansion valve of the air conditioner and/or decreasing the frequency increasing speed of the compressor, the method further includes:
and when the air conditioner is detected to exit low-temperature high-frequency heating, restoring the opening degree of the electronic expansion valve to the opening degree before the air conditioner enters the low-temperature high-frequency heating and/or restoring the frequency increasing speed of the compressor to the frequency increasing speed before the air conditioner enters the low-temperature high-frequency heating.
Optionally, the control method of the air conditioner further includes:
detecting the outdoor temperature of the air conditioner acting space;
and updating the frequency limiting current of the compressor according to the outdoor temperature, wherein the operating frequency corresponding to the frequency limiting current is greater than the first preset frequency.
Optionally, the step of updating the frequency-limited current of the compressor according to the outdoor temperature includes:
when the outdoor temperature is greater than or equal to a preset temperature, taking a preset current as the frequency limiting current;
and when the outdoor temperature is lower than the preset temperature, determining the frequency limiting current according to the corresponding relation between the outdoor temperature and the frequency limiting current.
In order to achieve the above object, the present invention also provides an air conditioner, comprising:
the control method comprises the steps of a memory, a processor and a control program of the air conditioner, wherein the control program of the air conditioner is stored on the memory and can run on the processor, and the steps of the control method of the air conditioner are realized when the control program of the air conditioner is executed by the processor.
To achieve the above object, the present invention also provides a computer-readable storage medium having a control program of an air conditioner stored thereon, the control program of the air conditioner, when executed by a processor, implementing the steps of the control method of the air conditioner.
According to the control method of the air conditioner, the air conditioner and the computer readable storage medium provided by the invention, the operation frequency of the compressor of the air conditioner is obtained in the process of low-temperature high-frequency heating of the air conditioner, and when the operation frequency of the compressor is greater than or equal to a first preset frequency, the opening degree of an electronic expansion valve of the air conditioner is increased and/or the frequency increasing speed of the compressor is reduced. According to the invention, when the air conditioner is in a low-temperature high-frequency heating mode, the heating capacity is improved in a frequency lifting mode, and the condition that the air conditioner is stopped or frequency-limited protection is avoided.
Drawings
Fig. 1 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 3 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
FIG. 4 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a control method of an air conditioner, which can improve the heating capacity in a frequency lifting mode when the air conditioner is in a low-temperature high-frequency heating mode and avoid the condition of shutdown or frequency-limiting protection of the air conditioner.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention.
The terminal of the embodiment of the invention comprises but is not limited to an air conditioner and an air conditioner.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a Keyboard (Keyboard), a remote controller, and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (such as a non-volatile memory, e.g., disk storage) and the memory 1005 may optionally also be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of an air conditioner.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1005 and perform the following operations:
the method comprises the steps that in the process of low-temperature high-frequency heating of an air conditioner, the operating frequency of a compressor of the air conditioner is obtained;
and when the running frequency of the compressor is greater than or equal to a first preset frequency, increasing the opening degree of an electronic expansion valve of the air conditioner and/or reducing the frequency increasing speed of the compressor.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
the indoor temperature of the air conditioner acting space is less than or equal to the preset indoor temperature;
the rotating speed of a fan of the air conditioner is greater than or equal to a preset rotating speed;
the outdoor temperature of the air conditioner acting space is less than or equal to the preset outdoor temperature.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
and increasing the opening degree of the electronic expansion valve to a target opening degree.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
and reducing the frequency increasing speed of the compressor to the target frequency increasing speed.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
judging whether the running frequency of the compressor is greater than or equal to a second preset frequency, wherein the second preset frequency is greater than the first preset frequency;
and when the running frequency of the compressor is greater than or equal to the second preset frequency, reducing the opening degree of the electronic expansion valve.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
and when the air conditioner is detected to exit low-temperature high-frequency heating, restoring the opening degree of the electronic expansion valve to the opening degree before the air conditioner enters the low-temperature high-frequency heating and/or restoring the frequency increasing speed of the compressor to the frequency increasing speed before the air conditioner enters the low-temperature high-frequency heating.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
detecting the outdoor temperature of the air conditioner acting space;
and updating the frequency limiting current of the compressor according to the outdoor temperature, wherein the operating frequency corresponding to the frequency limiting current is greater than the first preset frequency.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1005, and also perform the following operations:
when the outdoor temperature is greater than or equal to a preset temperature, taking a preset current as the frequency limiting current;
and when the outdoor temperature is lower than the preset temperature, determining the frequency limiting current according to the corresponding relation between the outdoor temperature and the frequency limiting current.
Referring to fig. 2, in an embodiment, a control method of an air conditioner includes:
step S10, acquiring the running frequency of a compressor of the air conditioner in the process of low-temperature high-frequency heating of the air conditioner;
and step S20, when the running frequency of the compressor is greater than or equal to a first preset frequency, increasing the opening degree of an electronic expansion valve of the air conditioner and/or reducing the frequency increasing speed of the compressor.
In this embodiment, the low-temperature high-frequency heating means heating by an air conditioner in an environment where an ambient temperature (indoor temperature and/or outdoor temperature) is lower than a certain value. When a preset condition is met, the air conditioner is judged to enter low-temperature high-frequency heating, wherein the preset condition comprises at least two of the following conditions: the indoor temperature of the air conditioner acting space is less than or equal to the preset indoor temperature; the rotating speed of a fan of the air conditioner is greater than or equal to a preset rotating speed; the outdoor temperature of the air conditioner acting space is less than or equal to the preset outdoor temperature. Optionally, when the indoor temperature of the air conditioner acting space is less than or equal to a preset indoor temperature, the rotating speed of the fan of the air conditioner is greater than or equal to a preset rotating speed, and the outdoor temperature of the air conditioner acting space is less than or equal to a preset outdoor temperature, it is determined that the air conditioner enters low-temperature high-frequency heating. The first temperature sensor is arranged at the air inlet of outdoor air, the air inlet of the condenser of the optional outdoor unit is used for detecting the outdoor temperature of the acting space of the air conditioner, the second temperature sensor is arranged at the air inlet of indoor air, and the air inlet of the evaporator of the optional indoor unit is used for detecting the indoor temperature of the acting space of the air conditioner. The preset indoor temperature, the preset rotating speed and the preset outdoor temperature are all numerical values set through a large number of tests, so that accurate judgment of low-temperature high-frequency heating is guaranteed.
In this embodiment, when the operating frequency of the compressor is greater than or equal to the first preset frequency, in order to avoid that the current is instantaneously too large and rushes over the frequency limiting current in the rising process of the frequency of the compressor, so that the frequency of the compressor cannot reach a high frequency, or the frequency of the compressor reaches a high frequency and is also in an unstable high-frequency state, the rising speed of the compressor is reduced at this time. The step of reducing the up-conversion speed of the compressor comprises: and reducing the frequency increasing speed of the compressor to the target frequency increasing speed. For example from 1Hz/s to 0.5 Hz/s.
In this embodiment, when the operating frequency of the compressor is greater than or equal to the first preset frequency, in order to avoid that the opening degree of the electronic expansion valve is too small, so that the frequency of the compressor is limited during the rising process, and the heating capacity cannot be exerted, the opening degree of the electronic expansion valve is increased. The step of increasing the opening degree of the electronic expansion valve of the air conditioner includes: and increasing the opening degree of the electronic expansion valve to a target opening degree. The target opening degree may be a maximum opening degree. Therefore, the heating effect is guaranteed, the front-back pressure difference of the electronic expansion valve is small, and the throttling effect can be achieved.
Optionally, when the operating frequency of the compressor is greater than or equal to a first preset frequency, the opening degree of an electronic expansion valve of the air conditioner is increased, and the frequency increasing speed of the compressor is reduced.
In the technical scheme disclosed in this embodiment, in the process of low-temperature high-frequency heating of the air conditioner, the operating frequency of a compressor of the air conditioner is acquired, and when the operating frequency of the compressor is greater than or equal to a first preset frequency, the opening degree of an electronic expansion valve of the air conditioner is increased and/or the frequency increasing speed of the compressor is reduced, so that when the air conditioner is in a low-temperature high-frequency heating mode, the heating capacity is increased in a frequency increasing mode, and the condition that the air conditioner is stopped or protected by limiting the frequency is avoided.
In a second embodiment, as shown in fig. 3, on the basis of the embodiment shown in fig. 2, after increasing the opening degree of the electronic expansion valve of the air conditioner and/or decreasing the frequency increasing speed of the compressor, the method further includes:
step S30, judging whether the running frequency of the compressor is greater than or equal to a second preset frequency, wherein the second preset frequency is greater than the first preset frequency;
and step S40, when the operating frequency of the compressor is greater than or equal to the second preset frequency, decreasing the opening degree of the electronic expansion valve.
In this embodiment, when the operating frequency of the compressor is greater than or equal to the second preset frequency, it is determined that the operating frequency of the compressor substantially achieves the heating capacity under the low-temperature high-frequency heating condition, so that the opening degree of the electronic expansion valve may be decreased, and further, the opening degree of the electronic expansion valve may be decreased to a predetermined opening degree. Wherein the predetermined opening degree is related to a second preset frequency, and the second preset frequency is related to the set temperature of the air conditioner.
In the technical solution disclosed in this embodiment, when the operating frequency of the compressor is greater than or equal to the second preset frequency, the opening degree of the electronic expansion valve is reduced, so that the throttling effect is achieved.
In a third embodiment, as shown in fig. 4, on the basis of the embodiment shown in any one of fig. 2 to 3, after increasing the opening degree of the electronic expansion valve of the air conditioner and/or decreasing the frequency increasing speed of the compressor, the method further includes:
and step S50, when the air conditioner is detected to exit low-temperature high-frequency heating, restoring the opening degree of the electronic expansion valve to the opening degree before the air conditioner enters the low-temperature high-frequency heating and/or restoring the frequency increasing speed of the compressor to the frequency increasing speed before the air conditioner enters the low-temperature high-frequency heating.
In this embodiment, when the air conditioner exits low-temperature high-frequency heating, since it is not necessary to avoid that the current caused by the over-high frequency of the compressor is instantaneously too large, so that the current rushes through the frequency-limiting current, thereby causing the problem of frequency limitation or shutdown, the opening degree of the electronic expansion valve can be restored to the opening degree before the air conditioner enters low-temperature high-frequency heating, or the frequency-up speed of the compressor is restored to the frequency-up speed before the air conditioner enters low-temperature high-frequency heating, or the opening degree of the electronic expansion valve is restored to the opening degree before the air conditioner enters low-temperature high-frequency heating and the frequency-up speed of the compressor is restored to the frequency-up speed before the air conditioner enters low-temperature high-frequency heating.
In the technical scheme disclosed in the embodiment, when the air conditioner is detected to exit low-temperature high-frequency heating, the opening degree of the electronic expansion valve is restored and/or the frequency increasing speed of the compressor is restored, so that the running stability of the system is ensured.
In a fourth embodiment, as shown in fig. 5, on the basis of the embodiment shown in any one of fig. 2 to 4, the method for controlling an air conditioner further includes:
step S60, detecting the outdoor temperature of the air conditioner acting space;
and step S70, updating the frequency limiting current of the compressor according to the outdoor temperature, wherein the operating frequency corresponding to the frequency limiting current is greater than the first preset frequency.
In this embodiment, the frequency limiting current is used to limit the operating frequency of the compressor. In the prior art, when the outdoor temperature is greater than or equal to the preset temperature, the outdoor temperature is a common heating temperature zone, the preset current is used as the frequency limiting current, and when the outdoor temperature is less than the preset temperature, the outdoor temperature is a low-temperature heating temperature zone, and the preset current is used as the frequency limiting current. In the setting mode, the range of the low-temperature heating temperature zone is set too wide, so that when the frequency-limited current of the low-temperature heating temperature zone is designed to be small, the compressor cannot reach high frequency, and when the frequency-limited current of the low-temperature heating temperature zone is designed to be large, the reliability of the air conditioner is influenced.
In this embodiment, when the outdoor temperature is greater than or equal to the preset temperature, the outdoor temperature is a common heating temperature zone, and the preset current is used as the frequency-limited current; when the outdoor temperature is lower than the preset temperature, the low-temperature heating temperature zone is a low-temperature heating temperature zone, and the frequency-limiting current is determined according to the corresponding relation between the outdoor temperature and the frequency-limiting current, wherein the corresponding relation is preset and is obtained through a large number of tests. For example, when the outdoor temperature is lower than the preset temperature and the outdoor temperature is lower than the first temperature, the limited frequency current is I1When the outdoor temperature is lower than the preset temperature and the outdoor temperature is lower than the second temperature, the frequency-limiting current is I2Wherein the second temperature is less than the first temperature, I2Is greater than I1. Therefore, a plurality of frequency limiting currents are set in the low-temperature heating temperature zone, the reliability of the air conditioner is guaranteed, and the heating effect is improved.
In the technical scheme disclosed in this embodiment, the frequency-limited current of the compressor is updated according to the outdoor temperature, and the operating frequency corresponding to the frequency-limited current is greater than a first preset frequency, so that the reliability of the system is ensured and the heating effect is improved.
The invention also provides an air conditioner, which comprises a memory, a processor and a control program of the air conditioner, wherein the control program of the air conditioner is stored on the memory and can run on the processor, and the control program of the air conditioner is configured to realize the steps of the control method of the air conditioner under the execution main body of the air conditioner.
The embodiment of the invention also provides a computer readable storage medium, wherein a control program of the air conditioner is stored on the computer readable storage medium, and the control program of the air conditioner is executed by a processor to realize the steps of the control method of the air conditioner under the execution main body of the air conditioner.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a television, a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A control method of an air conditioner is characterized by comprising the following steps:
when a preset condition is met, the air conditioner is judged to enter low-temperature high-frequency heating, wherein the preset condition comprises at least two of the following conditions:
the indoor temperature of the air conditioner acting space is less than or equal to the preset indoor temperature;
the rotating speed of a fan of the air conditioner is greater than or equal to a preset rotating speed;
the outdoor temperature of the air conditioner acting space is less than or equal to the preset outdoor temperature;
the method comprises the steps that in the process of low-temperature high-frequency heating of an air conditioner, the operating frequency of a compressor of the air conditioner is obtained;
and when the operating frequency of the compressor is greater than or equal to a first preset frequency, increasing the opening degree of an electronic expansion valve of the air conditioner to a target opening degree and reducing the frequency-increasing speed of the compressor to a target frequency-increasing speed.
2. The control method of an air conditioner according to claim 1, further comprising, after increasing an opening degree of an electronic expansion valve of the air conditioner and/or decreasing an up-conversion speed of the compressor:
judging whether the running frequency of the compressor is greater than or equal to a second preset frequency, wherein the second preset frequency is greater than the first preset frequency;
and when the running frequency of the compressor is greater than or equal to the second preset frequency, reducing the opening degree of the electronic expansion valve.
3. The control method of an air conditioner according to claim 1, further comprising, after increasing an opening degree of an electronic expansion valve of the air conditioner and/or decreasing an up-conversion speed of the compressor:
and when the air conditioner is detected to exit low-temperature high-frequency heating, restoring the opening degree of the electronic expansion valve to the opening degree before the air conditioner enters the low-temperature high-frequency heating and/or restoring the frequency increasing speed of the compressor to the frequency increasing speed before the air conditioner enters the low-temperature high-frequency heating.
4. The control method of an air conditioner according to claim 1, further comprising:
detecting the outdoor temperature of the air conditioner acting space;
and updating the frequency limiting current of the compressor according to the outdoor temperature, wherein the operating frequency corresponding to the frequency limiting current is greater than the first preset frequency.
5. The control method of an air conditioner according to claim 4, wherein the step of updating the frequency-limited current of the compressor according to the outdoor temperature comprises:
when the outdoor temperature is greater than or equal to a preset temperature, taking a preset current as the frequency limiting current;
and when the outdoor temperature is lower than the preset temperature, determining the frequency limiting current according to the corresponding relation between the outdoor temperature and the frequency limiting current.
6. An air conditioner, characterized in that the air conditioner comprises a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor, the control program of the air conditioner realizing the steps of the control method of the air conditioner according to any one of claims 1 to 5 when executed by the processor.
7. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor implements the steps of the control method of the air conditioner according to any one of claims 1 to 5.
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| CN111271847B (en) * | 2019-07-17 | 2021-07-13 | 宁波奥克斯电气股份有限公司 | Air conditioner control method for improving low-temperature heating capacity |
| CN110779154A (en) * | 2019-11-07 | 2020-02-11 | 珠海格力电器股份有限公司 | Control method and device of air conditioner |
| CN111207501B (en) * | 2020-01-16 | 2022-07-29 | 广东美的暖通设备有限公司 | Air conditioner control method and system and air conditioner |
| CN111380179B (en) * | 2020-03-27 | 2021-09-28 | 广东美的制冷设备有限公司 | Air conditioner high-temperature disinfection frequency-limiting protection method, air conditioner, storage medium and device |
| CN113531861B (en) * | 2021-07-22 | 2022-08-26 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| CN115059994A (en) * | 2022-03-16 | 2022-09-16 | 北京小米移动软件有限公司 | Air conditioner control method and device and storage medium |
| CN115077064A (en) * | 2022-06-27 | 2022-09-20 | 广东美的制冷设备有限公司 | Control method of air conditioner, controller, air conditioner and storage medium |
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| CN106352632A (en) * | 2016-08-25 | 2017-01-25 | 芜湖美智空调设备有限公司 | Air conditioning system and heating control method thereof |
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| JP2000171072A (en) * | 1998-12-07 | 2000-06-23 | Sanyo Electric Co Ltd | Air conditioner |
| JP5407342B2 (en) * | 2009-01-09 | 2014-02-05 | パナソニック株式会社 | Air conditioner |
| CN201715658U (en) * | 2010-06-30 | 2011-01-19 | 广东美的电器股份有限公司 | Air conditioner |
| CN107576031B (en) * | 2017-09-22 | 2020-11-03 | 青岛海尔空调器有限总公司 | Control method and system of air conditioner under low-temperature high-humidity heating working condition |
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| CN106352632A (en) * | 2016-08-25 | 2017-01-25 | 芜湖美智空调设备有限公司 | Air conditioning system and heating control method thereof |
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