CN109724209B - Air conditioner control method - Google Patents
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- CN109724209B CN109724209B CN201811615823.XA CN201811615823A CN109724209B CN 109724209 B CN109724209 B CN 109724209B CN 201811615823 A CN201811615823 A CN 201811615823A CN 109724209 B CN109724209 B CN 109724209B
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Abstract
The invention provides an air conditioner control method, which comprises the following steps: after the air conditioner is started, acquiring a temperature value of a motor of the air conditioner by using a temperature sensor; and judging whether the filth blockage condition of the filter screen of the air conditioner is detected or not according to the temperature value of the motor. Considering that when the air conditioner is turned on within a short time after the air conditioner is turned off, the temperature of the motor of the air conditioner is not sufficiently lost, and the air conditioner still has a certain residual temperature, so that the current of the motor of the air conditioner can be influenced by the residual temperature after the air conditioner is turned on again. The temperature condition of the motor is obtained after the air conditioner is started, and whether the filth blockage condition of the filter screen of the air conditioner is judged or not is judged according to the temperature condition of the motor, so that the judgment result is more accurate.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an air conditioner control method.
Background
The air inlet of the air conditioner is generally covered with a filter screen for filtering air impurities and preventing dust from entering the indoor unit, and in the long-time use process of the air conditioner, if the filter screen is not cleaned for a long time, the air inlet volume of the indoor unit is influenced by a large amount of deposited dust on the filter screen, the refrigerating/heating effect of the air conditioner is reduced, and the electric quantity of the air conditioner is increased under the same load requirement. Meanwhile, the accumulated dust on the filter screen can also breed bacteria, and if the accumulated dust is not cleaned in time, the health of a user can be affected.
The conventional method for detecting whether the filter screen is dirty or not is generally implemented by timing, for example, by accumulating the operation time of the air conditioner, when the accumulated operation time of the air conditioner exceeds a set value, the filter screen is judged to be blocked, and a user is prompted to clean the filter screen. However, this detection method cannot be optimized according to the use environment of the user, and in a severe use environment, when the accumulated time is not reached, the air conditioner is actually blocked, however, the air conditioner cannot prompt the user to clean, and the user cannot timely and accurately clean the filter screen, which affects the use experience of the user.
After the filter screen of the air conditioner is dirty and blocked, the air outlet or the air inlet of the air conditioner motor is not smooth, so that the current of the air conditioner motor changes.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide an air conditioner control method that overcomes or at least partially solves the above problems.
A further object of the present invention is to improve the accuracy of the filth blockage detection of the filter screen and to prompt the user to clean the filter screen in time to keep the air conditioner clean.
According to an aspect of the present invention, there is provided an air conditioner control method including:
after the air conditioner is started, acquiring a temperature value of a motor of the air conditioner by using a temperature sensor;
and judging whether the filth blockage condition of the filter screen of the air conditioner is detected or not according to the temperature value of the motor.
Further, the step of judging whether to detect the filth blockage condition of the filter screen of the air conditioner according to the temperature value of the motor comprises the following steps:
comparing the temperature value to a first temperature threshold of the air conditioner;
and when the temperature value is greater than the first temperature threshold value, the filth blockage condition of the filter screen of the air conditioner is not detected.
Further, the step of judging whether to detect the filth blockage condition of the filter screen of the air conditioner according to the temperature value of the motor comprises the following steps:
comparing the temperature value to a first temperature threshold of the air conditioner;
and when the temperature value is less than or equal to the first temperature threshold value, detecting the filth blockage condition of the filter screen of the air conditioner.
Further, the size of the first temperature threshold is equal to the size of the temperature value of the environment where the air conditioner is located.
Further, when the temperature value is smaller than the first temperature threshold, a filter screen detection signal is generated, and the step of detecting the filth blockage condition of the filter screen of the air conditioner is executed, wherein the step of detecting the filth blockage condition of the filter screen of the air conditioner comprises the following steps:
sending a VSP identification voltage to an indoor unit fan of the air conditioner according to the running mode of the air conditioner after the air conditioner is started;
acquiring the operation mode corresponding to the VSP identification voltage;
and judging whether a filter screen of the air conditioner is dirty or not according to the running mode.
Further, before acquiring the operation mode corresponding to the VSP identification voltage, the method further includes:
establishing a corresponding relation between the VSP identification voltage and the operation mode of the air conditioner;
the step of acquiring the operation mode corresponding to the VSP identification voltage comprises the following steps:
and searching the corresponding relation for the corresponding operation mode of the transmitted VSP identification voltage.
Further, the step of judging whether the filter screen of the air conditioner is dirty or not according to the operation mode comprises the following steps:
if the operation mode is a refrigeration mode, starting an indoor unit fan;
detecting the ambient temperature of a space where an indoor unit of the air conditioner is located, and detecting the current of a fan to obtain a first current value;
acquiring a preset filter screen filth blockage current corresponding to the environment temperature, and recording as a first preset current value;
and comparing the first current value with a first preset current value, and if the first current value is less than or equal to the first preset current value, judging that the filter screen is dirty and blocked.
Further, before the step of obtaining the preset current for filth blockage of the filter screen corresponding to the ambient temperature, the method further comprises the following steps:
establishing a corresponding relation between the environment temperature of the space where the indoor unit is located and the preset current for filth blockage of the filter screen of the fan;
the step of obtaining the preset filter screen filth blockage current corresponding to the environment temperature comprises the following steps:
and searching for the preset filter screen filth blockage current corresponding to the detected ambient temperature from the corresponding relation.
Further, the step of judging whether the filter screen of the air conditioner is dirty or not according to the operation mode comprises the following steps:
if the operation mode is a heating mode, detecting the temperature of an indoor heat exchanger coil of the air conditioner;
when the temperature of the coil pipe of the heat exchanger is higher than the preset temperature of the coil pipe of the heat exchanger, starting the fan;
detecting the current of the fan to obtain a second current value;
acquiring a preset filter screen filth blockage current corresponding to the temperature of the coil pipe of the heat exchanger, and recording as a second preset current value;
and comparing the second current value with a second preset current value, and if the second current value is less than or equal to the second preset current value, judging that the filter screen is dirty and blocked.
Further, before the step of obtaining the preset current for filth blockage of the filter screen corresponding to the temperature of the coil pipe of the heat exchanger, the method further comprises the following steps:
establishing a corresponding relation between the temperature of a coil pipe of the heat exchanger and the preset current for filth blockage of a filter screen of the fan;
the step of obtaining the preset filter screen filth blockage current corresponding to the temperature of the heat exchanger coil comprises the following steps:
and searching for the preset filter screen filth blockage current corresponding to the detected temperature of the coil pipe of the heat exchanger from the corresponding relation.
In the air conditioner control method, the temperature of the motor of the air conditioner is not fully lost and still has certain residual temperature when the air conditioner is started within a short time after being turned off, so that the current of the motor of the air conditioner can be influenced by the residual temperature after the air conditioner is turned on again. The temperature condition of the motor is obtained after the air conditioner is started, and whether the filth blockage condition of the filter screen of the air conditioner is judged or not is judged according to the temperature condition of the motor, so that the judgment result is more accurate.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic view of a control method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a schematic view of a control method of an air conditioner according to still another embodiment of the present invention;
fig. 5 is a schematic view of an air conditioner according to an embodiment of the present invention.
Detailed Description
The present embodiment first provides an air conditioner control method, and fig. 1 is a schematic diagram of an air conditioner control method according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner control method of the present embodiment includes:
s102, sending a VSP identification voltage to an indoor unit fan of the air conditioner according to the running mode of the air conditioner after the air conditioner is started;
s104, acquiring an operation mode of the air conditioner corresponding to the VSP identification voltage;
and S106, judging whether a filter screen of the air conditioner is dirty or not according to the running mode.
Generally, by detecting the current value of a fan of an indoor unit, whether a filter screen is dirty or not is judged according to the current value of the fan, and the principle is as follows: in the operation process of the air conditioner, air firstly enters an indoor unit of the air conditioner through a filter screen at an air inlet of the indoor unit, exchanges heat with a heat exchanger and then is sent out through a fan. When the filter screen is dirty and blocked, the effective flow area of the filter screen can be reduced, the air inlet area of the air conditioner can be correspondingly reduced, and correspondingly, the air volume can be reduced to a certain degree.
For the fans of the same indoor unit, the air volume is the load, the load is large when the air volume is large, the load is small when the air volume is small, and the load is in direct proportion to the current. If the filter screen is dirty and blocked, the air volume is reduced, and the current value of the fan is reduced, so that the current value of the fan and the dirty and blocked condition of the filter screen have a certain corresponding relation, and the dirty and blocked condition of the filter screen can be judged according to the current value of the fan by detecting the current of the fan.
However, after the air entering the indoor unit exchanges heat through the indoor heat exchanger of the air conditioner, the temperature and the density both change, so that the rotating load of the fan also changes, and therefore, the cooling and heating operations of the air conditioner have different influences on the current of the fan, that is, in the cooling mode and the heating mode, the filter screen is dirty and blocked in different judgment situations, and the operation mode when the air conditioner is started needs to be determined first, and then the filter screen is dirty and blocked in different judgment situations.
The existing fan control module only receives a rotating speed signal fed back by a fan and provides a driving voltage for the fan, but the fan control module cannot know the operation mode of the air conditioner, so that before the operation mode of the air conditioner corresponding to the VSP identification voltage is obtained, the corresponding relation between the VSP identification voltage and the operation mode of the air conditioner is established, and then the operation mode corresponding to the VSP identification voltage is searched from the corresponding relation. That is, an identification voltage corresponding to the operation mode needs to be preset between the fan control module and the air conditioner start-up control module, for example, the identification voltage corresponding to the heating mode is 5v, and the identification voltage corresponding to the cooling mode is 6 v.
When the air conditioner is started, the air conditioner starting control module sends VSP identification voltage to the fan control module according to the operation mode during starting, the fan control module determines the operation mode of the air conditioner according to the identification voltage, and then the filter screen filth blockage condition is judged according to the operation mode.
And in the refrigeration mode, the air conditioner is started, the air deflector is opened, the fan is started after the air deflector is opened to a set position, and the condition that the filter screen is dirty and blocked is judged at the moment. During refrigeration, after the air conditioner is started, the fan is started quickly, the temperature of the indoor heat exchanger is not reduced obviously, the temperature of airflow after heat exchange with the indoor heat exchanger and the air temperature in the indoor environment have small difference, and the load of the fan can be approximately corresponding to the air passing through the fan at the current ambient temperature.
And during the heating mode, because the heating has the cold air prevention mode, when the air conditioner is started, the fan is not started, but when the temperature of the indoor heat exchanger coil rises to a certain value, for example, 25 ℃, the fan is started, and then the filter screen filth blockage condition is judged, at the moment, the temperature of the indoor heat exchanger coil rises, the difference with the indoor environment temperature is large, and the load of the fan corresponds to the air passing through the fan at the current indoor heat exchanger coil temperature.
Specifically, the specific process of judging whether the filter screen of the air conditioner is dirty or not according to the operation mode comprises the following steps:
if the operation mode of the air conditioner is a refrigeration mode, starting a fan of an indoor unit;
detecting the ambient temperature of the space where the indoor unit is located, and detecting the current of the fan to obtain a first current value;
acquiring a preset filter screen filth blockage current corresponding to the current environment temperature, and recording as a first preset current value;
and comparing the first current value with a first preset current value, and if the first current value is less than or equal to the first preset current value, judging that the filter screen is dirty and blocked.
As mentioned above, the current value of the fan is affected by the operation mode of the air conditioner, and in the cooling mode, the fan load corresponds to the air passing through the fan at the current environmental temperature, so that the preset current for filth blockage of the filter screen of the fan at different environmental temperatures is collected through experiments, and the corresponding relationship between the environmental temperature of the space where the indoor unit is located and the preset current for filth blockage of the filter screen of the fan of the indoor unit is established.
When the air conditioner is started to operate in a refrigeration mode in the actual use process, the filter screen filth blockage preset current corresponding to the current environment temperature is searched from the corresponding relation between the environment temperature of the space where the indoor unit is located and the filter screen filth blockage preset current of the fan of the indoor unit, and the filter screen filth blockage preset current is compared with the current detected fan current, so that the filth blockage condition of the filter screen is judged.
During the heating mode, the process for judging the filth blockage condition of the filter screen of the air conditioner specifically comprises the following steps:
if the operation mode of the air conditioner is a heating mode, detecting the temperature of an indoor heat exchanger coil of the air conditioner;
when the temperature of the coil pipe of the heat exchanger is higher than the preset temperature of the coil pipe of the heat exchanger, starting a fan of the indoor unit;
detecting the current of the fan of the indoor unit to obtain a second current value;
acquiring a preset filter screen filth blockage current corresponding to the temperature of the coil pipe of the heat exchanger, and recording as a second preset current value;
and comparing the second current value with a second preset current value, and if the second current value is less than or equal to the second preset current value, judging that the filter screen is dirty and blocked.
As described above, in the heating mode, the fan load corresponds to the air passing through the fan at the current temperature of the heat exchanger coil, and therefore, the preset current for filth blockage of the filter screen of the fan at different temperatures of the heat exchanger coil is collected through experiments, and the corresponding relationship between the temperature of the heat exchanger coil and the preset current for filth blockage of the filter screen of the indoor unit fan is established.
In the prior art, in an experiment for obtaining the preset current for filth blockage of the filter screen, the indoor unit does not perform refrigeration or heating, only a fan of the indoor unit is started, indoor ambient air enters the indoor unit through the filth blockage filter screen at the air inlet, and the preset current for filth blockage of the filter screen is determined by detecting the current of the fan.
In the embodiment, in the experiment for obtaining the preset filtering filth blockage current, the indoor unit operates in a heating mode to obtain the preset filtering filth blockage current of the indoor unit fan corresponding to different temperatures of the heat exchanger coil, so as to establish the corresponding relationship between the temperature of the heat exchanger coil and the preset filtering filth blockage current of the indoor unit fan. When the air conditioner actually heats and operates, when the indoor unit fan is started, the filter screen filth blockage preset current corresponding to the current heat exchanger coil temperature is searched from the corresponding relation between the heat exchanger coil temperature and the filter screen filth blockage preset current of the indoor unit fan, and the filter screen filth blockage preset current is compared with the detected current of the indoor unit fan, so that whether the filter screen filth blockage exists or not can be accurately judged.
When the preset current of the filth blockage of the filter screen is smaller than the current of the currently detected fan of the indoor unit, the filth blockage of the filter screen is judged, and meanwhile, a filter screen cleaning reminding operation can be performed, for example, a filter screen cleaning reminding message is output to a user terminal bound with the air conditioner in advance.
In some embodiments, the control method of the air conditioner may further include recording an accumulated time during which the indoor unit is operated. After the filter screen is judged to be dirty and blocked through the process, whether the accumulated time of the operation of the indoor unit is equal to or more than the second preset time can be judged, and if the accumulated time is more than the second preset time, the filter screen cleaning reminding operation is carried out. In the embodiment, the fan current judgment and the accumulated running time of the indoor unit are combined, so that the time for reminding a user to clean the filter screen can be more accurately determined.
The present embodiment exemplarily provides an optional flow of a control method of an air conditioner, and specifically, referring to fig. 2, fig. 2 is an optional flow chart of a control method of an air conditioner according to an embodiment of the present invention, and the control method of an air conditioner includes:
s202, establishing a corresponding relation between VSP identification voltage and an air conditioner running mode, establishing a corresponding relation between indoor environment temperature and filter screen filth blockage preset current, and establishing a corresponding relation between indoor heat exchanger coil temperature and filter screen filth blockage preset current in a heating mode;
s204, when the air conditioner is started, a VSP identification voltage is sent to the indoor unit fan according to the current operation mode;
s206, searching the air conditioner running mode corresponding to the VSP identification voltage from the corresponding relation between the VSP identification voltage and the air conditioner running mode;
s208, the operation mode of the air conditioner is a refrigeration mode, an indoor unit fan is started, and the indoor environment temperature is detected;
s210, detecting the current of the fan, and searching the preset filter screen filth blockage current corresponding to the indoor environment temperature from the corresponding relation between the indoor environment temperature and the preset filter screen filth blockage current;
s212, comparing the detected fan current with the preset filter screen filth blockage current obtained by searching;
s214, if the fan current is smaller than or equal to the preset filter screen filth blockage current, executing the step S226, otherwise, returning to the step S204;
s216, detecting the temperature of the coil pipe of the indoor heat exchanger when the operation mode of the air conditioner is a heating mode;
s218, the temperature of the coil of the indoor heat exchanger is higher than the preset temperature of the coil;
s220, starting an indoor unit fan;
s222, detecting the current of the fan, and searching the preset filter screen filth blockage current corresponding to the temperature of the indoor heat exchanger coil from the corresponding relation between the temperature of the indoor heat exchanger coil and the preset filter screen filth blockage current;
s224, if the fan current is less than or equal to the preset filter screen filth blockage current, executing a step S226, otherwise, returning to the step S204;
and S226, the filter screen is dirty and blocked, and the user is reminded to clean the filter screen.
When the air conditioner is turned on again in a short time after the air conditioner is turned off, the temperature of the motor of the air conditioner is not fully lost, and a certain residual temperature still exists, so that the current of the motor of the air conditioner can be influenced by the residual temperature after the air conditioner is turned on again, and the detection result of the filter screen is deviated. In order to prevent the occurrence of such an influence, in an embodiment, before performing the dirty block detection on the air conditioner filter (i.e., before performing step S102), it is further determined whether the detection condition for the filter is satisfied.
As shown in fig. 3, specifically, the control method of the air conditioner further includes the steps of:
s302, after the air conditioner is started, a temperature sensor is used for acquiring a temperature value of a motor of the air conditioner;
and S304, judging whether the filth blockage condition of the filter screen of the air conditioner is detected according to the temperature condition of the motor.
The above steps are executed before step S102, and when the determination result of detecting the clogging of the filter of the air conditioner after step S304 is no, step S102 is not executed. If the determination result of detecting the clogging of the filter of the air conditioner is yes after the step S304, the step S102 is executed. In other words, when the motor of the air conditioner is found to have residual temperature, the filter screen detection may not be performed temporarily in order to prevent the residual temperature from affecting the detection result of the filter screen, specifically, the filter screen detection may not be performed in the whole operation process of the air conditioner, or the filter screen detection may be performed after the air conditioner is operated for a period of time.
It should be noted that the temperature value of the motor of the air conditioner does not have to be directly obtained, but may also be indirectly obtained, for example, the temperature value of the motor may be indirectly obtained by monitoring the interval between the last time the air conditioner is turned on and the current time. The interval time from the last time of starting the air conditioner to the current time of starting the air conditioner is in corresponding relation with the temperature of a motor of the air conditioner, the longer the interval time is, the more sufficient the motor is cooled, and the lower the residual temperature of the motor is. Conversely, the shorter the interval time, the higher the residual temperature of the motor. The step of obtaining the temperature value of the motor of the air conditioner may include obtaining an interval time from the last time the air conditioner is started to the current time, and determining the temperature value of the motor according to the interval time and a corresponding relationship between the interval time and the temperature condition of the motor. In particular, the interval time may be obtained by timing with the main board of the motor (i.e., the main board of the motor is started on the air conditioner together until the interval of the current start and the interval time is obtained), or may be obtained by timing with the main board of the air conditioner (i.e., the main board of the air conditioner is started on the air conditioner together until the interval of the current start and the interval time is obtained).
In step S304, the step of determining whether to detect a filth blockage condition of a filter screen of the air conditioner according to the temperature value of the motor includes:
comparing the temperature value with a first temperature threshold value of the air conditioner;
when the temperature value is greater than the first temperature threshold value, the filth blockage condition of the filter screen of the air conditioner is not detected;
and when the temperature value is less than or equal to the first temperature threshold value, detecting the filth blockage condition of the filter screen of the air conditioner.
The first temperature threshold may be determined according to the acceptable temperature level of the remaining temperature and the current ambient temperature (the ambient temperature when the temperature value of the motor sensed by the sensor is compared with the first temperature threshold of the air conditioner). The first temperature threshold is a variable value, and other temperature sensors may be specifically configured to monitor the current ambient temperature, and the magnitude of the first temperature threshold is set in real time by adding the acceptable magnitude of the remaining temperature to the current ambient temperature.
When it is determined that the temperature value of the motor can output the filter screen detection signal, the air conditioner generates the filter screen detection signal and performs a step of detecting a filth blockage condition of the filter screen of the air conditioner, that is, the step S102 and the following steps are performed.
In one embodiment, filth blockage detection can be performed on the air conditioner filter screen while judging whether the detection condition of the filter screen is met, and whether the detection result is effective or not can be determined according to the judgment result. That is, as shown in fig. 4, the control method of the air conditioner further includes the steps of:
s402, acquiring the temperature condition of a motor of the air conditioner after the air conditioner is started;
s404, judging whether a filter screen of the air conditioner is dirty or not according to the current of the motor, and generating a detection result;
and S406, determining whether the detection result is effective according to the temperature condition of the motor.
That is, immediately after the air conditioner is turned on, the filter is tested (step S102 and the following steps are executed), and a test result is generated. Meanwhile, the air conditioner judges whether the detection result is effective or not by monitoring the temperature condition of the motor, for example, when the motor of the air conditioner is found to have residual temperature, the detection result is determined to be invalid, and even if the detection result shows that the filter screen is dirty and blocked, a dirty and blocked signal is not output to the outside. When the motor of the air conditioner is found to have no residual temperature, the detection result is determined to be effective, and the air conditioner generates and transmits a signal whether the filter screen is dirty or not according to the detection result.
Fig. 5 is a schematic block diagram of an air conditioner according to an embodiment of the present invention.
As shown in fig. 5, the air conditioner 100 of the present embodiment further includes a controller 110 and a memory 120, a computer program 121 is stored in the memory 120, and the computer program 121 is executed to cause the controller 110 to execute the control method of any one of the above embodiments.
The aforementioned blower control module and the air conditioner start control module are integrated on the controller 110. The memory 120 of the present embodiment may be an electronic memory such as a flash memory, an EEPROM, an EPROM, a hard disk or a ROM, the memory 120 having a storage space for a computer program 121 for performing any of the method steps of the above-described method.
The air conditioner 100 of this embodiment further includes an ambient temperature detection unit 130 and a heat exchanger coil temperature detection unit 140, so that in the cooling mode, the ambient temperature detection unit 130 is used for detecting the temperature of the environment of the space where the indoor unit is located, and in the heating mode, the heat exchanger coil temperature detection unit 140 is used for detecting the temperature of the indoor heat exchanger coil.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. An air conditioner control method comprising:
after the air conditioner is started, a temperature sensor is used for acquiring a temperature value of a motor of an indoor unit fan of the air conditioner;
comparing the temperature value to a first temperature threshold of the air conditioner;
when the temperature value is greater than the first temperature threshold value, the filth blockage condition of the filter screen of the air conditioner is not detected;
and when the temperature value is less than or equal to the first temperature threshold value, detecting the filth blockage condition of the filter screen of the air conditioner.
2. The control method according to claim 1,
the size of the first temperature threshold is equal to the size of the temperature value of the environment where the air conditioner is located.
3. The control method according to claim 1, wherein when the temperature value is less than the first temperature threshold, a filter screen detection signal is generated, and the step of detecting the dirty condition of the filter screen of the air conditioner is performed, and the step of detecting the dirty condition of the filter screen of the air conditioner includes:
sending a VSP identification voltage to an indoor unit fan of the air conditioner according to the running mode of the air conditioner after the air conditioner is started;
acquiring the operation mode corresponding to the VSP identification voltage;
and judging whether a filter screen of the air conditioner is dirty or not according to the running mode.
4. The control method according to claim 3, wherein, prior to said obtaining the operating mode to which the VSP identification voltage corresponds, further comprising:
establishing a corresponding relation between the VSP identification voltage and the operation mode of the air conditioner;
the step of obtaining the operating mode corresponding to the VSP identification voltage comprises:
looking up the operation mode corresponding to the VSP identification voltage sent from the corresponding relation.
5. The control method according to claim 3, wherein the determining whether a filter screen of the air conditioner is dirty or not according to the operation mode includes:
if the operation mode is a refrigeration mode, starting an indoor unit fan;
detecting the ambient temperature of a space where an indoor unit of the air conditioner is located, and detecting the current of the fan to obtain a first current value;
acquiring a preset filter screen filth blockage current corresponding to the environment temperature, and recording as a first preset current value;
and comparing the first current value with the first preset current value, and if the first current value is less than or equal to the first preset current value, judging that the filter screen is dirty and blocked.
6. The control method according to claim 5, wherein before the step of obtaining the preset filter screen filth blockage current corresponding to the ambient temperature, the method further comprises:
establishing a corresponding relation between the environment temperature of the space where the indoor unit is located and the preset dirty and blocked current of the filter screen of the fan;
the step of obtaining the preset current for filth blockage of the filter screen corresponding to the environment temperature comprises the following steps:
and searching the preset filtering net filth blockage current corresponding to the detected environment temperature from the corresponding relation.
7. The control method according to claim 3, wherein the determining whether a filter screen of the air conditioner is dirty or not according to the operation mode includes:
if the operation mode is a heating mode, detecting the temperature of an indoor heat exchanger coil of the air conditioner;
when the temperature of the heat exchanger coil is higher than the preset temperature of the heat exchanger coil, the fan is started;
detecting the current of the fan to obtain a second current value;
acquiring a preset filter screen filth blockage current corresponding to the temperature of the heat exchanger coil, and recording as a second preset current value;
and comparing the second current value with a second preset current value, and if the second current value is less than or equal to the second preset current value, judging that the filter screen is dirty and blocked.
8. The control method according to claim 7, wherein before the step of obtaining the preset current for filth blockage of the filter screen corresponding to the temperature of the heat exchanger coil, the method further comprises the following steps:
establishing a corresponding relation between the temperature of the coil pipe of the heat exchanger and preset current for filth blockage of a filter screen of the fan;
the step of obtaining the preset current for filth blockage of the filter screen corresponding to the temperature of the coil pipe of the heat exchanger comprises the following steps:
and searching the preset current for filth blockage of the filter screen corresponding to the detected temperature of the coil pipe of the heat exchanger from the corresponding relation.
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| CN201811615823.XA CN109724209B (en) | 2018-12-27 | 2018-12-27 | Air conditioner control method |
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| CN201811615823.XA CN109724209B (en) | 2018-12-27 | 2018-12-27 | Air conditioner control method |
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| CN109724209B true CN109724209B (en) | 2020-11-27 |
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| JP2005083660A (en) * | 2003-09-09 | 2005-03-31 | Matsushita Electric Ind Co Ltd | Hot air heater |
| KR20070072787A (en) * | 2006-01-02 | 2007-07-05 | 삼성전자주식회사 | Apparatus for displaying filter exchange time of air cleaner and method thereof |
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