CN109210686B - Cold air prevention control method for air conditioner and air conditioner - Google Patents
Cold air prevention control method for air conditioner and air conditioner Download PDFInfo
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- CN109210686B CN109210686B CN201811097866.3A CN201811097866A CN109210686B CN 109210686 B CN109210686 B CN 109210686B CN 201811097866 A CN201811097866 A CN 201811097866A CN 109210686 B CN109210686 B CN 109210686B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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Abstract
The invention provides a cold air prevention control method for an air conditioner and the air conditioner, and relates to the technical field of air conditioners. The control method for preventing cold air of the air conditioner comprises the following steps: acquiring a heating mode operation instruction; judging whether an inner disc temperature sensor is normal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, and if the inner disc temperature sensor is abnormal, stopping the compressor; otherwise, the cold air prevention function is operated. The control method for preventing cold wind of the air conditioner judges whether the inner disc temperature sensor is abnormal before the cold wind prevention function is operated, and if the inner disc temperature sensor is judged to be normal, the cold wind prevention function is operated; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent out, so that the problem that the fault of the inner disc temperature sensor cannot be reported, the compressor is greatly damaged, and the service life of the compressor is influenced is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a cold air prevention control method for an air conditioner and the air conditioner.
Background
In the existing air conditioner cold air prevention control mode, the fault of a temperature sensor cannot be reported, so that the compressor can be continuously protected for multiple times or protected under high pressure, the compressor is greatly damaged, and the service life of the compressor is influenced.
Disclosure of Invention
In view of this, the present invention is directed to a method for controlling an air conditioner to prevent cold wind, so as to solve the problem that a temperature sensor failure cannot be reported in the current cold wind prevention control method.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control method for preventing cold wind of an air conditioner comprises the following steps:
acquiring a heating mode operation instruction;
judging whether an inner disc temperature sensor is normal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, and if the inner disc temperature sensor is abnormal, stopping the compressor; otherwise, the cold air prevention function is operated.
Further, the judging whether the inner disc temperature sensor is normal according to the inner disc temperature, the indoor environment temperature and the compressor running time includes:
acquiring the reading of an inner disc temperature sensor as the inner disc temperature, and acquiring the indoor environment temperature;
calculating the difference value between the temperature of the inner disc and the indoor environment temperature;
comparing the difference with a preset temperature difference, wherein when the difference is not less than the preset temperature difference, the inner disc temperature sensor is normal;
otherwise, acquiring the running time of the compressor, and comparing the running time of the compressor with a first preset running time;
and when the running time of the compressor is not less than the first preset running time, the inner disc temperature sensor is abnormal.
Further, the operation cold air prevention function includes:
judging whether to start an inner fan or not according to the temperature of the inner disc and the running time of the compressor;
and after the inner fan is started, selecting the wind speed of the inner fan and the running time of the cold air prevention function according to the temperature of the inner disc.
Further, the judging whether to start the inner fan according to the inner disc temperature and the running time of the compressor comprises:
acquiring the temperature of the inner disc;
comparing the temperature of the inner disc with a first preset temperature;
when the temperature of the inner disc is not less than the first preset temperature, the inner fan is started; otherwise, acquiring the running time of the compressor, and comparing the running time of the compressor with a second preset running time;
and when the running time of the compressor is not more than the second preset running time, the inner fan is not started, otherwise, the inner fan is started.
Further, the selecting the wind speed of the inner fan and the operation time of the cold wind prevention function according to the inner disc temperature includes:
comparing the temperature of the inner disc with a second preset temperature;
when the temperature of the inner disc is lower than the second preset temperature, the inner fan operates in a low-wind mode;
otherwise, the inner fan operates according to the set wind speed and quits the cold air prevention function.
Further, the function of running the cold air prevention further comprises:
and after the inner fan is started, selecting the wind speed of the inner fan and the running time of the cold air prevention function according to the running time of the compressor.
Further, the selecting the wind speed of the inner fan and the operation time of the cold wind prevention function according to the operation time of the compressor includes:
comparing the compressor running time with the third preset running time;
when the running time of the compressor is not more than the third preset running time, the inner fan runs according to the low wind mode;
otherwise, the inner fan operates according to the set wind speed and quits the cold air prevention function.
Compared with the prior art, the control method for preventing cold wind of the air conditioner has the following advantages:
(1) the control method for preventing cold wind of the air conditioner judges whether the inner disc temperature sensor is abnormal before the cold wind prevention function is operated, and if the inner disc temperature sensor is judged to be normal, the cold wind prevention function is operated; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent, so that the problem that the fault of the inner disc temperature sensor cannot be reported, the compressor is continuously protected for multiple times or protected at high voltage, the compressor is greatly damaged, and the service life of the compressor is influenced is avoided; the safety and the stability of the operation of the air conditioner are improved.
(2) According to the control method for preventing cold air of the air conditioner, whether the temperature of the inner disc detected by the inner disc temperature sensor is abnormal or not is judged according to the temperature of the inner disc, the indoor environment temperature and the running time of the compressor, and then whether the running of the inner disc temperature sensor is normal or not is judged; if the inner plate temperature sensor is judged to normally operate, the cold air prevention function is normally operated; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent, so that the cold air prevention function is prevented from being operated under the condition that the inner disc temperature sensor is in fault, the compressor is prevented from being damaged, and the service life of the compressor is prevented from being influenced; thereby improving the safety and stability of the operation of the air conditioner.
(3) According to the control method for preventing the cold air of the air conditioner, the temperature of the inner disc and the running time of the compressor are respectively compared with the set value, whether the temperature of the middle part of the pipeline of the evaporator in the air conditioner rises to a proper temperature or not is judged, and whether the inner fan is started or not is further judged, so that the air conditioner cannot blow out the cold air after the inner fan is started, and the comfort level of a user for using the air conditioner is improved.
(4) According to the control method for preventing cold wind of the air conditioner, after the inner fan is started, the wind speed of the inner fan is selected according to the temperature of the inner disc, and if the temperature of the inner disc is lower, the inner fan is selected to operate in a low wind mode; if the inner disc temperature is higher, the inner fan is selected to operate according to the set wind speed, and the cold air prevention function is quitted at the same time, so that the wind speed of the inner fan is matched with the inner disc temperature, and the air conditioner is prevented from blowing out cold air after the heating mode is started, and the use comfort of a user is prevented from being influenced.
Another objective of the present invention is to provide an air conditioner to solve the problem that the failure of the temperature sensor cannot be reported in the conventional air conditioner anti-cold air control method.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an air conditioner, comprising:
an indoor temperature sensor for detecting an indoor ambient temperature;
the inner disc temperature sensor is used for detecting the temperature of the inner disc;
the compressor is used for compressing the refrigerant and driving the refrigerant to operate;
the inner fan is used for supplying air to the indoor space;
the control device is used for controlling the starting of the cold air prevention function and judging whether the inner disc temperature sensor is normal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor; the cold air preventing function is operated according to the temperature of the inner disc and the running time of the compressor; the indoor temperature sensor, the inner disc temperature sensor, the compressor and the inner fan are all in communication connection with the control device.
Further, the step of judging whether the inner disc temperature sensor is normal or not by the control device according to the inner disc temperature, the indoor environment temperature and the operation time of the compressor includes:
acquiring the reading of the inner disc temperature sensor as the inner disc temperature, and acquiring the indoor environment temperature;
calculating the difference value between the temperature of the inner disc and the indoor environment temperature;
comparing the difference with a preset temperature difference, wherein when the difference is not less than the preset temperature difference, the inner disc temperature sensor is normal;
otherwise, acquiring the running time of the compressor, and comparing the running time of the compressor with a first preset running time;
and when the running time of the compressor is not less than the first preset running time, the inner disc temperature sensor is abnormal.
Further, the controlling means operating the cold wind prevention function according to the inner panel temperature and the operation time of the compressor includes:
judging whether the inner fan is started or not according to the temperature of the inner disc and the running time of the compressor;
and after the inner fan is started, selecting the wind speed of the inner fan and the running time of the cold air prevention function according to the temperature of the inner disc.
Compared with the prior art, the air conditioner and the cold air prevention control method of the air conditioner have the same advantages, and are not described herein again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for controlling an air conditioner to prevent cold air according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a process of determining whether an inner disc temperature sensor is normal according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating the operation of the anti-cold wind function according to the embodiment of the present invention;
FIG. 4 is a flow chart illustrating the selection of the wind speed of the inner fan and the operation time of the anti-cold wind function according to the inner disk temperature according to the embodiment of the present invention;
fig. 5 is a flowchart illustrating the selection of the wind speed of the inner fan and the operation time of the anti-cold wind function according to the operation time of the compressor according to the embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
In order to overcome the defect that a temperature sensor fault cannot be reported in the existing cold air prevention control mode of the air conditioner, the embodiment provides a cold air prevention control method of the air conditioner, and as shown in fig. 1, the control method comprises the following steps:
s1: acquiring a heating mode operation instruction;
s2: judging whether the inner disc temperature sensor is normal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, and if the inner disc temperature sensor is normal, entering the step S4; otherwise, go to step S3;
s3: stopping the compressor;
s4: the cold air prevention function is operated.
After a heating mode operation instruction is obtained, before a cold air prevention function is started, whether the detected inner disc temperature value is normal or not is judged according to the inner disc temperature, the indoor environment temperature and the operation time of the compressor, and whether the inner disc temperature sensor is normal or not is judged according to the detected inner disc temperature value; if the inner disc temperature that detects appears unusually, then judge that inner disc temperature sensor breaks down, if inner disc temperature sensor drops etc. if the operation prevents the cold wind function and can lead to the air conditioner to press the mode operation of preventing the cold wind always this moment, thereby cause the harm to the compressor, influence the life of compressor, consequently, judge that inner disc temperature sensor appears unusually after, report inner disc temperature sensor trouble, and send compressor stop instruction, so as to avoid leading to preventing that the cold wind function operation is unusual because of inner disc temperature sensor temperature measurement is inaccurate, and then cause the harm to the compressor, influence the life of compressor.
If the detected inner disc temperature value is judged not to be abnormal, the inner disc temperature sensor is judged not to be abnormal, the compressor cannot be damaged by the cold air prevention function in operation, and therefore a cold air prevention function starting instruction is sent out, and the cold air prevention function is operated.
Before the anti-cold air function is operated, the method for controlling the air conditioner to prevent cold air provided by the embodiment first judges whether the detected inner disc temperature is abnormal or not according to the inner disc temperature, the indoor environment temperature and the operation time of the compressor; judging whether the inner disc temperature sensor is abnormal or not according to the detected inner disc temperature, and if the inner disc temperature sensor is judged to be normally operated, operating the cold air prevention function; and if the inner disk temperature sensor is judged to be abnormal, reporting the fault of the inner disk temperature sensor and sending a compressor stop instruction.
In the method for controlling the air conditioner to prevent cold wind provided by the embodiment, whether the inner disc temperature sensor is abnormal or not is judged before the cold wind prevention function is operated, and if the inner disc temperature sensor is judged to be normal, the cold wind prevention function is operated; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent, so that the problem that the fault of the inner disc temperature sensor cannot be reported, the compressor is continuously protected for multiple times or protected at high voltage, the compressor is greatly damaged, and the service life of the compressor is influenced is avoided; the safety and the stability of the operation of the air conditioner are improved.
Example 2
On the basis of embodiment 1, referring to fig. 2, the determining whether the inner disc temperature sensor is normal according to the inner disc temperature, the indoor environment temperature and the operation time of the compressor provided by this embodiment includes:
s21: acquiring the reading of an inner disc temperature sensor as the inner disc temperature, and acquiring the indoor environment temperature;
s22: calculating the difference value between the temperature of the inner disc and the indoor environment temperature;
s23: comparing the difference with a preset temperature difference, and if the difference is not smaller than the preset temperature difference, judging that the inner disc temperature sensor is normal; otherwise, go to step S24;
s24: acquiring the running time of the compressor, and comparing the running time of the compressor with a first preset running time; if the running time of the compressor is not less than the first preset running time, judging that the inner disc temperature sensor is abnormal; otherwise, the process proceeds to step S21.
The inner disc temperature is the temperature of the middle part of the evaporator pipeline and is measured by an inner disc temperature sensor; after the air conditioner starts a heating mode, the temperature in the middle of an evaporator pipeline is gradually increased; by comparing the difference between the inner disc temperature detected by the inner disc temperature sensor and the indoor environment temperature with the preset temperature difference, if the difference between the detected inner disc temperature and the indoor environment temperature is not less than the preset temperature difference, the temperature rise in the middle of the detected evaporator pipeline is proved, the inner disc temperature detected by the inner disc temperature sensor is normal, and therefore the inner disc temperature sensor can be judged to operate normally.
If the difference value between the temperature of the inner disc and the indoor environment temperature is smaller than the preset temperature difference value, the running time of the compressor is further compared with the first preset running time, if the running time of the compressor reaches the first preset running time, namely the running time of the compressor is not smaller than the first preset running time, the compressor is judged to have run for a long enough time, the actual temperature of the inner disc is increased, the difference value between the actual temperature of the inner disc and the indoor environment temperature is judged to have reached the preset temperature difference value, but the difference value between the temperature of the inner disc detected by the temperature sensor of the inner disc and the indoor environment temperature is still smaller than the preset temperature difference value, the temperature sensor of the inner disc is judged to be abnormal in running, the temperature sensor of the inner disc is reported to be in fault, and a compressor stop instruction is sent to prevent the compressor from being damaged; if the running time of the compressor does not reach the first preset running time, namely the running time of the compressor is smaller than the first preset running time, the fact that the difference value between the inner disc temperature and the indoor environment temperature is smaller than the preset temperature difference value is judged possibly due to the fact that the running time of the compressor is short, whether the inner disc temperature sensor is normal needs to be judged continuously according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, namely the steps are repeated until the running time of the compressor is not smaller than the first preset running time.
The preset temperature difference value and the first preset running time in the embodiment can be set according to the performance of the compressor, the environmental temperature and other practical conditions; for the same air conditioner, the preset temperature difference value corresponds to the value of the first preset operation time, and if the set preset temperature difference value is larger, the corresponding first preset operation time is shorter; on the contrary, the smaller the set preset temperature difference value is, the longer the corresponding first preset operation time is; in this embodiment, the preset temperature difference is preferably 1 ℃ and the first preset operation time is preferably 1 minute.
According to the control method for preventing cold air of the air conditioner, whether the temperature of the inner disc detected by the inner disc temperature sensor is abnormal or not is judged according to the temperature of the inner disc, the indoor environment temperature and the running time of the compressor, and then whether the running of the inner disc temperature sensor is normal or not is judged; if the inner plate temperature sensor is judged to normally operate, the cold air prevention function is normally operated; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent, so that the cold air prevention function is prevented from being operated under the condition that the inner disc temperature sensor is in fault, the compressor is prevented from being damaged, and the service life of the compressor is prevented from being influenced; thereby improving the safety and stability of the operation of the air conditioner.
Example 3
On the basis of embodiment 1, referring to fig. 3, the operation cold air prevention function provided by this embodiment includes:
judging whether to start an inner fan or not according to the temperature of the inner disc and the running time of the compressor;
and after the inner fan is started, selecting the air speed of the inner fan and the running time of the cold air prevention function according to the temperature of the inner disc.
After the inner plate temperature sensor is judged to normally operate, the cold air preventing function is operated; when the cold air prevention function is operated, whether the inner fan is started or not is judged according to the temperature of the inner disc and the operation time of the compressor, so that the problem that the air conditioner blows cold air due to the fact that the inner fan is started when the temperature of the inner disc is low and the discomfort of a user of the air conditioner is caused is avoided; when the temperature of the inner disc and the running time of the compressor reach set values, the inner fan is started again to prevent the air conditioner from blowing cold air; after the inner fan is started, the air speed of the inner fan and the running time of the cold air prevention function are further selected according to the temperature of the inner disc, so that the air temperature blown out by the air conditioner is appropriate, and the comfort level of a user is improved.
Specifically, whether the interior fan is opened to be judged according to the inner disc temperature and the operating time of compressor includes:
s41: acquiring the temperature of an inner disc;
s42: comparing the inner disc temperature with a first preset temperature, and entering step S46 when the inner disc temperature is not less than the first preset temperature; otherwise, go to step S43;
s43: acquiring the running time of the compressor;
s44: comparing the running time of the compressor with a second preset running time, and entering step S45 when the running time of the compressor is not more than the second preset running time; otherwise, go to step S46; (ii) a
S45: the inner fan is not started, and the step S41 is carried out;
s46: the inner fan is started.
When judging whether to start the inner fan, firstly comparing the temperature of the inner disc with a first preset temperature, if the temperature of the inner disc is not less than the first preset temperature, judging that the temperature of the inner disc is increased, and starting the inner fan at the moment, wherein the air conditioner cannot blow out cold air, so that an inner fan starting instruction is sent, and the inner fan is started; if the temperature of the inner disc is lower than the first preset temperature, whether the inner fan is started or not is further judged according to the running time of the compressor; comparing the running time of the compressor with a second preset running time, if the running time of the compressor is greater than the second preset running time, judging that the temperature of the inner disc is increased, and starting the inner fan air conditioner to prevent cold air from being blown out, so that an inner fan starting instruction is sent, and the inner fan is started; if the temperature of the inner disc is less than the first preset temperature, and meanwhile the running time of the compressor is not greater than the second preset running time, the air conditioner is judged to blow out cold air if the inner fan is started at the moment, so that an inner fan starting instruction is not sent out, the inner fan is not started, the judging process is repeated, namely the steps from S41 to S46 are repeated again until the condition that the inner fan is started is judged to be met, and the inner fan is started.
The values of the first preset temperature and the second preset operation time can be set according to the environment of the air conditioner, the user requirement and the like, and in the embodiment, the first preset temperature is preferably 30 ℃, and the second preset operation time is preferably 2 minutes.
According to the control method for preventing the cold air of the air conditioner, the operation time of the inner disc temperature and the operation time of the compressor are respectively compared with the set value, whether the temperature in the middle of the evaporator pipeline of the air conditioner rises to a proper temperature or not is judged, and then whether the inner fan is opened or not is judged, so that the air conditioner cannot blow out the cold air after the inner fan is opened, and the comfort level of the user for using the air conditioner is improved.
Example 4
On the basis of embodiment 3, referring to fig. 4, after the inner fan is turned on, the present embodiment further selects the wind speed of the inner fan and the operation time of the cold air prevention function according to the temperature of the inner disk, and specifically includes the following steps:
s47: comparing the inner disc temperature with a second preset temperature, and if the inner disc temperature is lower than the second preset temperature, entering step S48, otherwise, entering step S49;
s48: the inner fan operates according to a low wind mode;
s49: the inner fan operates according to the set wind speed and quits the cold air prevention function.
The second preset temperature is greater than the first preset temperature, and the value of the second preset temperature can be set according to the environment of the air conditioner, the user requirement and the like, and the second preset temperature is preferably 38 ℃. After the inner fan is started, if the temperature of the inner disc is lower than a second preset temperature, the temperature of the middle part of the evaporator pipeline of the air conditioner is judged to be still low, the air outlet temperature of the air conditioner is still not high enough after the inner fan is started, and the inner fan is selected to operate in a low air mode at the moment so as to avoid the discomfort of a user caused by further reduction of the air temperature blown out by the air conditioner due to overhigh air speed; if the temperature of the inner disc is not less than the second preset temperature, the temperature in the middle of the pipeline of the evaporator of the air conditioner is judged to meet the requirement at the moment, the air conditioner cannot blow out cold air, the inner fan can run according to the set air speed at the moment, the cold air preventing function is withdrawn, and the air conditioner runs according to a normal heating mode.
According to the control method for preventing cold wind of the air conditioner, after the inner fan is started, the wind speed of the inner fan is selected according to the temperature of the inner disc, and if the temperature of the inner disc is low, the inner fan is selected to operate in a low wind mode; if the inner disc temperature is higher, the inner fan is selected to operate according to the set wind speed, and the cold air prevention function is quitted at the same time, so that the wind speed of the inner fan is matched with the inner disc temperature, and the air conditioner is prevented from blowing out cold air after the heating mode is started, and the use comfort of a user is prevented from being influenced.
Example 5
Different from the embodiment 4, referring to fig. 5, after the internal fan is turned on, the wind speed of the internal fan and the operation time of the cold air prevention function are further selected according to the operation time of the compressor, and the method specifically includes the following steps:
s470: comparing the running time of the compressor with a third preset running time, and if the running time of the compressor is not greater than the third preset running time, entering step S480, otherwise, entering step S49;
s480: the inner fan operates according to a low wind mode;
s490: the inner fan operates according to the set wind speed and quits the cold air prevention function.
The third preset running time is greater than the second preset running time, and a value of the third preset running time can be set according to the environment where the air conditioner is located, the performance of the air conditioner, user requirements and the like, and the third preset running time is preferably 4 minutes in this embodiment.
After the inner fan is started, the temperature of the inner disc is increased in the initial stage according to the increase of the running time of the compressor, and a specific relation exists between the temperature of the inner disc and the running time of the inner fan; selecting a set temperature corresponding to the blowing mode of the inner fan, calculating or detecting the running time of the compressor required by the inner fan when the inner fan is heated to the set temperature according to the set temperature of the inner fan running at the set wind speed if the set temperature is selected, and setting the running time of the compressor as a third preset running time; further judging whether the temperature of the inner disc is increased to a target temperature or not according to the running time of the compressor, specifically, if the running time of the compressor does not reach a third preset running time, namely the running time of the compressor is less than the third preset running time, judging that the temperature of the inner disc does not reach a set temperature, and after an inner fan is started, the outlet air temperature of the air conditioner is still not high enough, and then selecting the inner fan to run according to a low air mode so as to avoid the condition that the temperature of air blown out by the air conditioner is further reduced due to overhigh air speed to cause discomfort of a user; if the running time of the compressor reaches a third preset running time, namely the running time of the compressor is greater than or equal to the third preset running time, the temperature of the inner disc is judged to reach the set temperature, the air conditioner cannot blow out cold air, at the moment, the inner fan can run according to the set air speed, the cold air preventing function is quitted, and the air conditioner runs according to a normal heating mode.
According to the control method for preventing cold wind of the air conditioner, after the inner fan is started, the wind speed of the inner fan is selected according to the running time of the compressor, and if the running time of the compressor is short, the inner fan is selected to run in a low wind mode; if the running time of the compressor is longer, the inner fan is selected to run according to the set wind speed, and the cold air prevention function is quitted at the same time, so that the wind speed of the inner fan is matched with the temperature of the inner disc, and the air conditioner is prevented from blowing out cold air after the heating mode is started, and the use comfort of a user is prevented from being influenced.
Example 6
The present embodiment provides an air conditioner, including:
an indoor temperature sensor for detecting an indoor ambient temperature;
the inner disc temperature sensor is used for detecting the temperature of the inner disc;
the compressor is used for compressing the refrigerant and driving the refrigerant to operate;
the inner fan is used for supplying air to the indoor space;
the control device is used for controlling the starting of the cold air prevention function and judging whether the temperature of the inner disc is normal or not according to the temperature of the inner disc, the indoor environment temperature and the running time of the compressor; and the cold-proof work is operated according to the temperature of the inner disc and the operation time of the compressor; and the indoor temperature sensor, the inner disc temperature sensor, the compressor and the inner fan are all in communication connection with the control device.
After a heating mode operation instruction is acquired, an indoor temperature sensor detects the indoor environment temperature, an inner disc temperature sensor detects the inner disc temperature, the detected indoor environment temperature and the detected inner disc temperature are respectively transmitted to a control device, the control device judges whether the inner disc temperature sensor is normal or not according to the indoor environment temperature, the inner disc temperature and the operation time of a compressor, if the inner disc temperature sensor is judged to be abnormal, a compressor stop instruction is sent, the compressor is stopped, so that the compressor and an outer fan are prevented from operating, but the state that the inner fan is not started lasts for more than two minutes, an inner protection fault or a high-voltage protection fault occurs in the compressor until the compressor is stopped, the fault of the temperature sensor cannot be reported, and the service life of the compressor is influenced; and if the inner disc temperature sensor is judged to normally operate, the cold air preventing function is operated.
The air conditioner provided by the embodiment judges whether the inner disc temperature sensor is abnormal or not before the cold air prevention function is operated, and operates the cold air prevention function if the inner disc temperature sensor is judged to operate normally; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent, so that the problem that the fault of the inner disc temperature sensor cannot be reported, the compressor is continuously protected for multiple times or protected at high voltage, the compressor is greatly damaged, and the service life of the compressor is influenced is avoided; the safety and the stability of the operation of the air conditioner are improved.
Example 7
On the basis of embodiment 6, the determining, by the control device in this embodiment, whether the inner disc temperature sensor is normal according to the inner disc temperature, the indoor environment temperature, and the operation time of the compressor includes:
s21: acquiring the reading of an inner disc temperature sensor as the inner disc temperature, and acquiring the indoor environment temperature;
s22: calculating the difference value between the temperature of the inner disc and the indoor environment temperature;
s23: comparing the difference between the temperature of the inner disc and the indoor environment temperature with a preset temperature difference, and if the difference between the temperature of the inner disc and the indoor environment temperature is not less than the preset temperature difference, judging that the temperature sensor of the inner disc is normal; otherwise, go to step S24;
s24: acquiring the running time of the compressor, and comparing the running time of the compressor with a first preset running time; if the running time of the compressor is not less than the first preset running time, judging that the inner disc temperature sensor is abnormal; otherwise, the process proceeds to step S21.
The air conditioner provided by the embodiment judges whether the inner disc temperature detected by the inner disc temperature sensor is abnormal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, and further judges whether the inner disc temperature sensor runs normally or not; if the inner plate temperature sensor is judged to normally operate, the cold air prevention function is normally operated; if the inner disc temperature sensor is judged to be abnormal in operation, the fault of the inner disc temperature sensor is reported, and a compressor stop instruction is sent, so that the cold air prevention function is prevented from being operated under the condition that the inner disc temperature sensor is in fault, the compressor is prevented from being damaged, and the service life of the compressor is prevented from being influenced; thereby improving the safety and stability of the operation of the air conditioner.
Example 8
On the basis of embodiment 6, the operation of the cold wind prevention function by the control device according to the inner disk temperature and the operation time of the compressor in this embodiment includes:
judging whether to start an inner fan or not according to the temperature of the inner disc and the running time of the compressor;
and after the inner fan is started, selecting the air speed of the inner fan and the running time of the cold air prevention function according to the temperature of the inner disc.
Specifically, whether the interior fan is opened to be judged according to the inner disc temperature and the operating time of compressor includes:
s41: acquiring the temperature of an inner disc;
s42: comparing the inner disc temperature with a first preset temperature, and entering step S46 when the inner disc temperature is not less than the first preset temperature; otherwise, go to step S43;
s43: acquiring the running time of the compressor;
s44: comparing the running time of the compressor with a second preset running time, and entering step S45 when the running time of the compressor is not more than the second preset running time; otherwise, go to step S46; (ii) a
S45: the inner fan is not started, and the step S41 is carried out;
s46: the inner fan is started.
When judging whether to start the inner fan, firstly comparing the temperature of the inner disc with a first preset temperature, if the temperature of the inner disc is not less than the first preset temperature, judging that the temperature of the inner disc is increased, and starting the inner fan at the moment, wherein the air conditioner cannot blow out cold air, so that an inner fan starting instruction is sent, and the inner fan is started; if the temperature of the inner disc is lower than the first preset temperature, whether the inner fan is started or not is further judged according to the running time of the compressor; comparing the running time of the compressor with a second preset running time, if the running time of the compressor is greater than the second preset running time, judging that the temperature of the inner disc is increased, and starting the inner fan air conditioner to prevent the air from being blown out; cold air, so that an internal fan opening instruction is sent, and the internal fan is opened; if the temperature of the inner disc is smaller than the first preset temperature, and meanwhile the running time of the compressor is not larger than the second preset running time, the inner fan is judged to be started at the moment, the air conditioner can blow out cold air, the inner fan is not started, the judging process is repeated, namely the steps from S41 to S46 are repeated again until the judgment that the conditions for starting the inner fan are met, and the inner fan is started.
The air conditioner that this embodiment provided compares with the setting value respectively through the operating duration with inner disc temperature and compressor, judges whether the temperature at evaporimeter pipeline middle part rises to suitable temperature, and then judges whether to open interior fan to the air conditioner can not blow out cold wind behind the fan in guaranteeing to open, improves the comfort level that the user used the air conditioner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A control method for preventing cold air of an air conditioner is characterized by comprising the following steps:
acquiring a heating mode operation instruction;
judging whether an inner disc temperature sensor is normal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, and if the inner disc temperature sensor is abnormal, stopping the compressor; otherwise, the cold air prevention function is operated;
judging whether the inner disc temperature sensor is normal according to the inner disc temperature, the indoor environment temperature and the running time of the compressor comprises the following steps:
acquiring the reading of an inner disc temperature sensor as the inner disc temperature, and acquiring the indoor environment temperature;
calculating the difference value between the temperature of the inner disc and the indoor environment temperature;
comparing the difference with a preset temperature difference, and judging that the inner disc temperature sensor is normal when the difference is not less than the preset temperature difference;
otherwise, acquiring the running time of the compressor, and comparing the running time of the compressor with a first preset running time;
and when the running time of the compressor is not less than the first preset running time, judging that the inner disc temperature sensor is abnormal.
2. The method for controlling an air conditioner to prevent cold wind according to claim 1, wherein the operating the cold wind prevention function includes:
judging whether to start an inner fan or not according to the temperature of the inner disc and the running time of the compressor;
and after the inner fan is started, determining the wind speed of the inner fan and the running time of the cold air prevention function according to the temperature of the inner disc.
3. The method for controlling an air conditioner to prevent cold wind according to claim 2, wherein the determining whether to turn on an inner fan according to the inner disc temperature and the running time of the compressor comprises:
acquiring the temperature of the inner disc;
comparing the temperature of the inner disc with a first preset temperature;
when the temperature of the inner disc is not less than the first preset temperature, the inner fan is started; otherwise, acquiring the running time of the compressor, and comparing the running time of the compressor with a second preset running time;
when the running time of the compressor is not more than the second preset running time, the inner fan is not started,
otherwise, the inner fan is started.
4. The method of claim 3, wherein the determining the wind speed of the inner fan and the operation time of the anti-cold function according to the inner panel temperature comprises:
comparing the temperature of the inner disc with a second preset temperature;
when the temperature of the inner disc is lower than the second preset temperature, the inner fan operates in a low-wind mode;
otherwise, the inner fan operates according to the set wind speed and quits the cold air prevention function.
5. The method of claim 2, wherein the operating the cold air prevention function further comprises:
and after the inner fan is started, selecting the wind speed of the inner fan and the running time of the cold air prevention function according to the running time of the compressor.
6. The method of claim 5, wherein the selecting the wind speed of the inner fan and the operation time of the anti-cold function according to the operation time of the compressor comprises:
comparing the running time of the compressor with a third preset running time;
when the running time of the compressor is not more than the third preset running time, the inner fan runs according to a low wind mode;
otherwise, the inner fan operates according to the set wind speed and quits the cold air prevention function.
7. An air conditioner, characterized in that the air conditioner comprises:
an indoor temperature sensor for detecting an indoor ambient temperature;
the inner disc temperature sensor is used for detecting the temperature of the inner disc;
the compressor is used for compressing the refrigerant and driving the refrigerant to operate;
the inner fan is used for supplying air to the indoor space;
the control device is used for controlling the starting of the cold air prevention function and judging whether the inner disc temperature sensor is normal or not according to the inner disc temperature, the indoor environment temperature and the running time of the compressor; the cold air preventing function is operated according to the temperature of the inner disc and the running time of the compressor;
the indoor temperature sensor, the inner plate temperature sensor, the compressor and the inner fan are all arranged
Communicatively connected with the control device;
the control device judges whether the inner disc temperature sensor is normal according to the inner disc temperature, the indoor environment temperature and the running time of the compressor, and the control device comprises:
acquiring the reading of the inner disc temperature sensor as the inner disc temperature, and acquiring the indoor environment temperature;
calculating the difference value between the temperature of the inner disc and the indoor environment temperature;
comparing the difference with a preset temperature difference, wherein when the difference is not less than the preset temperature difference, the inner disc temperature sensor is normal;
otherwise, acquiring the running time of the compressor, and comparing the running time of the compressor with a first preset running time;
and when the running time of the compressor is not less than the first preset running time, the inner disc temperature sensor is abnormal.
8. The air conditioner according to claim 7, wherein the control means operating the cold wind prevention function according to the inner panel temperature and the operation time of the compressor comprises:
judging whether the inner fan is started or not according to the temperature of the inner disc and the running time of the compressor;
and after the inner fan is started, selecting the wind speed of the inner fan and the running time of the cold air prevention function according to the temperature of the inner disc.
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| CN110332664B (en) * | 2019-05-31 | 2021-06-22 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and air conditioner |
| CN110243049B (en) * | 2019-06-20 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Air conditioner heating control method and device and air conditioner |
| CN110567121B (en) * | 2019-09-16 | 2020-07-28 | 珠海格力电器股份有限公司 | Cold air prevention control method and device, storage medium and air conditioning unit |
| CN111189156A (en) * | 2020-01-14 | 2020-05-22 | 宁波奥克斯电气股份有限公司 | Cold air prevention control method and device and air conditioner |
| CN112486227A (en) * | 2020-10-28 | 2021-03-12 | 中广核(乌兰察布)风力发电有限公司 | Control system and method for automatic control of pressure of cooling water system |
| CN113776161B (en) * | 2021-08-31 | 2023-12-19 | 佛山市顺德区美的电子科技有限公司 | Air conditioner operation control method and device, air conditioner and readable storage medium |
| CN115164388B (en) * | 2022-08-09 | 2024-02-02 | 宁波奥克斯电气股份有限公司 | Heating cold air prevention control method for air conditioner |
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| CN100587353C (en) * | 2007-09-28 | 2010-02-03 | 海信（山东）空调有限公司 | Air conditioner heat-production cold air prevention control method |
| CN101430127A (en) * | 2008-11-27 | 2009-05-13 | 四川长虹电器股份有限公司 | Air conditioner control method in indoor heating state |
| JP6282864B2 (en) * | 2014-01-10 | 2018-02-21 | 東京瓦斯株式会社 | Air conditioner |
| CN106196419B (en) * | 2016-06-23 | 2019-04-12 | 海信（山东）空调有限公司 | A kind of air-conditioning state detection method, device and air-conditioning |
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| CN107355952B (en) * | 2017-07-28 | 2020-08-11 | 海信（山东）空调有限公司 | Cold air prevention control method and device for air conditioner and air conditioner |
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