CN107084487B - Heating control method and control device of air conditioner - Google Patents
Heating control method and control device of air conditioner Download PDFInfo
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- CN107084487B CN107084487B CN201710278664.8A CN201710278664A CN107084487B CN 107084487 B CN107084487 B CN 107084487B CN 201710278664 A CN201710278664 A CN 201710278664A CN 107084487 B CN107084487 B CN 107084487B
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
The invention discloses a heating control method and a heating control device of an air conditioner, wherein the method comprises the following steps: the air conditioner heats and operates, and obtains indoor temperature and outdoor temperature, if the indoor temperature is not greater than the first indoor temperature threshold value and the outdoor temperature is not greater than the outdoor temperature threshold value, fuzzy control is executed: performing room temperature PID operation according to the temperature difference between the indoor temperature and a set indoor target temperature to obtain a first target frequency; acquiring the coil temperature of an indoor heat exchanger, and determining the first target frequency as the frequency of an indoor unit if the coil temperature is greater than a set coil target temperature; otherwise, increasing the current running frequency of the compressor to obtain a second target frequency, selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit, and controlling the compressor of the air conditioner. The invention can solve the problem of heating discomfort caused by slow heating of the existing air conditioner.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to control of an air conditioner, in particular to a heating control method and a heating control device of the air conditioner.
Background
In cold winter, the air conditioner is a main heating method in an area without heating conditions or in cold weather in which heating is stopped.
When the existing air conditioner is operated for heating, the frequency of the compressor is controlled according to the difference value between the indoor temperature and the set indoor target temperature. If the frequency of the compressor obtained according to the difference between the indoor temperature and the set indoor target temperature is not large enough, the indoor temperature rises slowly, the indoor temperature is still low for a long time after the start, people cannot feel comfortable quickly, and especially under the condition that the indoor temperature is low, the time for waiting for the indoor temperature to be comfortable is longer.
Therefore, it is a key to improve the performance of the air conditioner to solve the problem of discomfort caused by slow heating of the air conditioner.
Disclosure of Invention
The invention aims to provide a heating control method and a heating control device of an air conditioner, which solve the problem of heating discomfort caused by slow heating of the existing air conditioner.
In order to achieve the purpose, the heating control method provided by the invention is realized by adopting the following technical scheme:
a heating control method of an air conditioner, the method comprising:
the air conditioner is operated in a heating mode, the indoor temperature and the outdoor temperature are obtained, the indoor temperature is compared with a first indoor temperature threshold value, and the outdoor temperature is compared with an outdoor temperature threshold value;
if the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, performing fuzzy control as follows:
calculating the temperature difference between the indoor temperature and a set indoor target temperature to obtain the indoor temperature difference, and performing room temperature PID (proportion integration differentiation) operation according to the indoor temperature difference to obtain a first target frequency; acquiring the coil temperature of the indoor heat exchanger, and comparing the coil temperature with a set coil target temperature; if the coil temperature is higher than the set coil target temperature, determining the first target frequency as the frequency of the indoor unit; if the coil temperature is not higher than the set coil target temperature, increasing the current running frequency of a compressor to obtain a second target frequency, and selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit;
and controlling a compressor of the air conditioner according to the frequency of the indoor unit.
In order to achieve the above object, the heating control device provided by the present invention is implemented by adopting the following technical scheme:
a heating control apparatus of an air conditioner, the apparatus comprising:
an indoor temperature acquisition unit for acquiring an indoor temperature;
an outdoor temperature acquisition unit for acquiring an outdoor temperature;
the temperature comparison unit is used for comparing the indoor temperature with a first indoor temperature threshold value and the outdoor temperature with an outdoor temperature threshold value and outputting a comparison result;
the fuzzy control unit is used for calculating the temperature difference between the indoor temperature acquired by the indoor temperature acquisition unit and a set indoor target temperature to acquire an indoor temperature difference when the output result of the temperature comparison unit indicates that the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, and performing room temperature PID operation according to the indoor temperature difference to acquire a first target frequency; meanwhile, acquiring the coil temperature of the indoor heat exchanger, and comparing the coil temperature with a set coil target temperature; when the temperature of the coil pipe is higher than the set coil pipe target temperature, determining the first target frequency as the frequency of the indoor unit; when the temperature of the coil pipe is not more than the set target temperature of the coil pipe, increasing the current running frequency of a compressor to obtain a second target frequency, and selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit; and controlling a compressor of the air conditioner according to the frequency of the indoor unit.
Compared with the prior art, the invention has the advantages and positive effects that: according to the invention, through setting the indoor temperature threshold value and the outdoor temperature threshold value, when the air conditioner is in heating operation, if the indoor temperature is not greater than the indoor temperature threshold value and the outdoor temperature is not greater than the outdoor temperature threshold value, fuzzy control is executed, and a larger frequency value in the frequency determined by room temperature PID operation and the frequency determined based on the coil temperature of the indoor heat exchanger is selected to control the compressor, so that the indoor temperature can be quickly increased under the condition of lower indoor temperature and outdoor temperature, the outlet air temperature of the air conditioner can not be too low, the problem of discomfort caused by slow rising of the indoor temperature and outlet air blowing at lower temperature is effectively solved, and the heating operation performance of the air conditioner is improved.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a flowchart of an embodiment of a heating control method of an air conditioner according to the present invention;
fig. 2 is a flowchart of another embodiment of a heating control method of an air conditioner according to the present invention;
fig. 3 is a block diagram illustrating an embodiment of a heating control apparatus for an air conditioner according to the present invention;
fig. 4 is a block diagram illustrating another embodiment of a heating control apparatus for an air conditioner according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, a flow chart of an embodiment of a heating control method for an air conditioner according to the present invention is shown.
As shown in fig. 1, the specific process of implementing the heating control in this embodiment is as follows:
step 11: the air conditioner performs heating operation, obtains the indoor temperature and the outdoor temperature, compares the indoor temperature with a first indoor temperature threshold value, and compares the outdoor temperature with an outdoor temperature threshold value.
Specifically, the indoor temperature refers to the indoor temperature of the room where the air conditioner is located, which is obtained in real time according to the set adoption frequency when the air conditioner is turned on and operates in the heating mode. This acquisition of the indoor temperature may be achieved by adopting the prior art, for example, detecting and acquiring the intake air temperature as the indoor temperature by a temperature sensor provided at the air intake of the air conditioner or a position close to the air intake of the air conditioner. The outdoor temperature refers to the ambient temperature outside the room where the air conditioner is located, which is obtained in real time according to the set sampling frequency when the air conditioner is started and operates in the heating mode. The outdoor temperature can be obtained by using the prior art, for example, by detecting and obtaining the outdoor temperature through a temperature sensor provided in the outdoor unit of the air conditioner.
The indoor temperature and the outdoor temperature are then compared to a first indoor temperature threshold and an outdoor temperature threshold, respectively. The first indoor temperature threshold and the outdoor temperature threshold are used as threshold temperatures for whether to execute fuzzy control, and may be a default temperature value preset in a control program when the air conditioner leaves a factory, or a temperature value set by a user of the air conditioner. If the temperature is set by the user, the air conditioner preferably recommends a reference temperature value for the user to refer to. Preferably, the preset first indoor temperature threshold or the recommended first indoor temperature threshold is 20 ℃, and the preset outdoor temperature threshold or the recommended outdoor temperature threshold is 14 ℃.
Step 12: when the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, the fuzzy control is performed.
Wherein the fuzzy control specifically comprises:
and calculating the temperature difference between the indoor temperature and the set indoor target temperature to obtain the indoor temperature difference, and performing room temperature PID operation according to the indoor temperature difference to obtain the first target frequency. The indoor temperature is the indoor temperature acquired in step 11, and the set indoor target temperature is a target temperature that the user sets and expects to reach indoors. The specific method for performing the room temperature PID operation according to the indoor temperature difference to obtain the target frequency for controlling the compressor can be implemented by using the prior art, and will not be elaborated and limited herein.
Meanwhile, the coil temperature of the indoor heat exchanger is obtained and compared with a set coil target temperature. If the temperature of the coil pipe is greater than the set target temperature of the coil pipe, determining a first target frequency obtained by room temperature PID operation as the frequency of the indoor unit; if the temperature of the coil pipe is not more than the set target temperature of the coil pipe, increasing the current running frequency of the compressor to obtain a second target frequency, and selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit; then, the compressor of the air conditioner is controlled according to the indoor unit frequency.
The coil temperature of the indoor heat exchanger is obtained according to the set adoption frequency. The acquisition of the coil temperature can be detected and acquired by arranging a temperature sensor on the coil of the heat exchanger. The set target temperature of the coil is a target temperature of the coil which is expected to be reached by the indoor heat exchanger, and may be a default temperature value preset in a control program when the air conditioner leaves a factory, or may be a temperature value set by a user of the air conditioner. If the temperature is set by the user, the air conditioner preferably recommends a reference temperature value for the user to refer to. Preferably, the preset set coil target temperature or recommended set coil target temperature range is 42-56 deg.C, with a preferred value of 50 deg.C.
And after comparison, if the temperature of the coil is greater than the set coil target temperature, the coil temperature is higher, the air outlet temperature of the air conditioner determined by the coil temperature is not too low, at the moment, the adjustment of the indoor temperature is taken as a main control target, the first target frequency obtained by room temperature PID calculation is determined as the frequency of the indoor unit, and the compressor of the air conditioner is controlled according to the frequency of the indoor unit. The specific process of controlling the frequency of the compressor of the air conditioner according to the frequency of the indoor unit refers to the prior art.
If the comparison result shows that the temperature of the coil pipe is not higher than the set target temperature of the coil pipe, the outlet air temperature of the air conditioner determined by the temperature of the coil pipe is low, and the problem that the outlet air temperature of the air conditioner is low and inappropriate outlet air is sent out due to the low indoor temperature is easily caused. In this case, the temperature of the coil pipe is considered, and meanwhile, the purpose of indoor temperature adjustment is also considered. Therefore, the current running frequency of the compressor is increased to obtain a second target frequency, the second target frequency is compared with a first target frequency obtained by room temperature PID operation, the larger value of the second target frequency is selected to be determined as the frequency of the indoor unit, and the compressor of the air conditioner is controlled according to the frequency of the indoor unit. The specific process of controlling the frequency of the compressor of the air conditioner according to the frequency of the indoor unit refers to the prior art. And raising the current running frequency of the compressor to a second target frequency so as to enable the temperature of the coil to approach the set coil target temperature by raising the frequency. When the air conditioner is subjected to heating control by adopting the process, if the indoor temperature is not greater than the first indoor temperature threshold value and the outdoor temperature is not greater than the outdoor temperature threshold value, the current indoor temperature and the current outdoor temperature are both lower, fuzzy control is executed, a larger frequency value in the frequency determined by room temperature PID operation and the frequency determined by the coil temperature of the indoor heat exchanger is selected to control the compressor, when the indoor temperature and the coil temperature are both low, the compressor is operated at high frequency, the indoor temperature is quickly increased to a more proper high temperature, the outlet air temperature of the air conditioner can not be too low, and the problem that the heating body feels uncomfortable due to the outlet air with slow rising indoor temperature and low temperature is effectively solved. Moreover, by adopting fuzzy control, even if a lower indoor target temperature is set due to misoperation when the indoor temperature is lower, the high-frequency operation of the compressor can be controlled under the condition that a larger frequency value is obtained based on the frequency increase after the judgment of the coil temperature, so that the indoor temperature is increased to a proper high temperature, and the heating operation performance of the air conditioner is further improved.
Referring to fig. 2, a flow chart of another embodiment of a heating control method for an air conditioner according to the present invention is shown.
As shown in fig. 2, the specific process of implementing the heating control in this embodiment is as follows:
step 21: the air conditioner performs heating operation, obtains the indoor temperature and the outdoor temperature, compares the indoor temperature with a first indoor temperature threshold value, and compares the outdoor temperature with an outdoor temperature threshold value.
Specifically, the indoor temperature refers to the indoor temperature of the room where the air conditioner is located, which is obtained in real time according to the set adoption frequency when the air conditioner is turned on and operates in the heating mode. This acquisition of the indoor temperature may be achieved by adopting the prior art, for example, detecting and acquiring the intake air temperature as the indoor temperature by a temperature sensor provided at the air intake of the air conditioner or a position close to the air intake of the air conditioner. The outdoor temperature refers to the ambient temperature outside the room where the air conditioner is located, which is obtained in real time by adopting the frequency set by the case when the air conditioner is started and operates in the heating mode. The outdoor temperature can be obtained by using the prior art, for example, by detecting and obtaining the outdoor temperature through a temperature sensor provided in the outdoor unit of the air conditioner.
The indoor temperature and the outdoor temperature are then compared to a first indoor temperature threshold and an outdoor temperature threshold, respectively. The first indoor temperature threshold and the outdoor temperature threshold are used as threshold temperatures for whether to execute fuzzy control, and may be a default temperature value preset in a control program when the air conditioner leaves a factory, or a temperature value set by a user of the air conditioner. If the temperature is set by the user, the air conditioner preferably recommends a reference temperature value for the user to refer to. Preferably, the preset first indoor temperature threshold or the recommended first indoor temperature threshold is 20 ℃, and the preset outdoor temperature threshold or the recommended outdoor temperature threshold is 14 ℃.
Step 22: and judging whether the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold. If yes, go to step 23; otherwise, go to step 26.
Step 23: fuzzy control is performed.
If it is determined in step 22 that the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, the fuzzy control process is performed. The specific process and method of fuzzy control may be referred to in the description of the embodiment of fig. 1.
Step 24: and acquiring the indoor temperature, and comparing the indoor temperature with a second indoor temperature threshold value.
Specifically, the indoor temperature is still acquired in real time during the execution of the fuzzy control, and the acquired indoor temperature is compared with the second indoor temperature threshold. The second indoor temperature threshold is used as a threshold temperature for judging whether to exit fuzzy control, and is similar to the first indoor temperature threshold, and the second indoor temperature threshold is also a default temperature value preset in a control program when the air conditioner leaves a factory, or a temperature value set by an air conditioner user. If the temperature is set by the user, the air conditioner preferably recommends a reference temperature value for the user to refer to. Preferably, the preset or recommended second indoor temperature threshold is 25 ℃.
Step 25: and judging whether the indoor temperature is greater than a second indoor temperature threshold value. If yes, go to step 26; otherwise, go to step 23.
If the indoor temperature is not greater than the second indoor temperature threshold, go to step 23 and continue to perform fuzzy control. If the indoor temperature is higher than the second indoor temperature threshold value, the fuzzy control is quitted, and the control is transferred to the step 26, so that the high-frequency operation is not forced after the indoor temperature reaches the more appropriate second indoor temperature, and the compressor is prevented from stopping due to reaching the temperature.
Step 26: room temperature PID control is performed.
This step is selectively executed according to the judgment result of step 22 or step 25. Specifically, if it is determined in step 22 that the indoor temperature before entering the fuzzy control is greater than the first indoor temperature threshold or the outdoor temperature is greater than the outdoor temperature threshold, the fuzzy control is not performed but the room temperature PID control is performed. That is, if the indoor temperature is greater than the first indoor temperature threshold or the outdoor temperature is greater than the outdoor temperature threshold, it indicates that the indoor temperature is not low or the outdoor temperature is not low, in this case, the coil temperature is not considered, but the conventional room temperature PID control is adopted, the temperature difference between the indoor temperature and the set indoor target temperature is calculated to obtain the indoor temperature difference, the room temperature PID operation is performed according to the indoor temperature difference to obtain the first target frequency, the first target frequency is taken as the indoor unit frequency, and the compressor of the air conditioner is controlled according to the indoor unit frequency. If it is determined in step 25 that the indoor temperature during the execution of the fuzzy control is greater than the second indoor temperature threshold, the fuzzy control is exited and the room temperature PID control process is shifted to. That is, if the indoor temperature is greater than the second indoor temperature threshold in the fuzzy control process, no matter how high the outdoor temperature is, in order to avoid the shutdown due to reaching the temperature, the coil temperature is not considered any more, but the conventional room temperature PID control is adopted, the temperature difference between the indoor temperature and the set indoor target temperature is calculated, the indoor temperature difference is obtained, the room temperature PID operation is carried out according to the indoor temperature difference, the first target frequency is obtained, the first target frequency is used as the frequency of the indoor unit, and the compressor of the air conditioner is controlled according to the frequency of the indoor unit.
Other technical effects of the heating control of the air conditioner performed by the embodiment of fig. 2 can be obtained by referring to the description of the embodiment of fig. 1.
In the fuzzy control process of the above embodiments, the second target frequency may be determined in many different ways. In some preferred embodiments, the second target frequency may be determined in the following manner:
after the coil temperature is obtained, whether the coil temperature is not higher than a set coil target temperature for the first time after the air conditioner is started is judged, and different processing is executed according to a judgment result. Specifically, if the coil temperature is not greater than the set coil target temperature for the first time after the startup, the set maximum heating frequency is determined as the second target frequency in order to raise the coil temperature as soon as possible. The maximum heating frequency is a set maximum frequency in the heating operation process of the air conditioner. And if the temperature of the coil pipe is not greater than the set target temperature of the coil pipe for the first time after the starting, increasing the current operating frequency of the compressor to obtain a second target frequency between the current operating frequency and the maximum heating frequency. If the coil temperature is not greater than the set coil target temperature for the first time, which indicates that the fuzzy control has been executed, the coil temperature is not too low than the coil target temperature, in this case, the second target frequency does not need to be increased to the maximum heating frequency, but is a frequency value between the current operating frequency and the maximum heating frequency, so as to avoid the shutdown due to the temperature reaching caused by the excessive frequency.
And if the temperature of the coil pipe is not greater than the set target temperature of the coil pipe for the first time after the air conditioner is started, acquiring the current operating frequency of the compressor, increasing the current operating frequency by the set adjusting frequency every set adjusting time, and determining the increased frequency as a second target frequency. After the current operating frequency is increased to the adjusting frequency as a second target frequency, whether the difference value between the set target temperature of the coil and the temperature of the coil is not less than the set overshoot temperature value is judged; if so, continuing to execute the process of increasing the current running frequency by the adjusting frequency as the second target frequency after the adjusting time is reached, otherwise, keeping the second target frequency unchanged.
Specifically, if the temperature of the coil pipe is not greater than the set target temperature of the coil pipe for the first time after the air conditioner is started, the current running frequency is increased by the set adjusting frequency, and the increased frequency is determined as a second target frequency. The set adjustment frequency is a frequency value preset before the air conditioner leaves the factory, or a frequency value set by the user, for example, set to 5 Hz. The frequency value is used as a frequency adjustment step and represents the increasing amplitude of the current operation frequency each time. And the frequency is reduced once every set adjustment time, so that gradual adjustment is realized, and the raised frequency is used as a second target frequency. After the current operating frequency is increased to the adjusting frequency, whether the difference between the set target temperature of the coil and the temperature of the coil is larger than the overshoot temperature value or not is judged. The overshoot temperature value is also a set temperature value, for example, set to 1 ℃. If the difference between the set coil target temperature and the coil temperature is judged to be greater than the overshoot temperature value, the coil temperature is far lower than the set coil target temperature, and further frequency increase is still needed. Also, as previously described, the up-conversion process increases once for the adjustment time set for the interval. The adjustment time is also a preset value indicating the interval time of the frequency adjustment. For example, it may be set to 2 min. That is, after once adjustment, the adjusted frequency is taken as the second target frequency, and when the adjustment time is not reached, the second target frequency is kept unchanged until the fuzzy control is exited and the room temperature PID control is entered or the shutdown is performed or the adjustment time is reached. And after the adjusting time is up, reading the current running frequency of the compressor, and continuously increasing the frequency according to the adjusting frequency on the basis of the current running frequency.
And if the difference between the set coil target temperature and the coil temperature is not greater than the overshoot temperature value, the coil temperature is not reached to the set coil target temperature, but the difference between the coil temperature and the set coil target temperature is smaller and is not greater than the overshoot temperature value. At this point, the frequency is not subsequently increased. Thus, the determined second target frequency is kept unchanged until the fuzzy control is exited and the room temperature PID control is entered or the shutdown is carried out.
Referring to fig. 3, a block diagram of a heating control device of an air conditioner according to an embodiment of the present invention is shown.
As shown in fig. 3, the control device of this embodiment includes the structural units, and the functions and mutual relationships of each structural unit are as follows:
an indoor temperature acquiring unit 31 for acquiring an indoor temperature.
And an outdoor temperature acquiring unit 32 for acquiring an outdoor temperature.
A temperature comparing unit 33 for comparing the indoor temperature acquired by the indoor temperature acquiring unit 31 with the first indoor temperature threshold value and the outdoor temperature acquired by the outdoor temperature acquiring unit 32 with the outdoor temperature threshold value, and outputting the comparison result.
A fuzzy control unit 34, configured to calculate a temperature difference between the indoor temperature acquired by the indoor temperature acquisition unit 31 and a set indoor target temperature to obtain an indoor temperature difference when the output result of the temperature comparison unit 33 is that the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, and perform a room temperature PID operation according to the indoor temperature difference to obtain a first target frequency; meanwhile, acquiring the coil temperature of the indoor heat exchanger, and comparing the coil temperature with a set coil target temperature; when the temperature of the coil pipe is higher than the set target temperature of the coil pipe, determining a first target frequency as the frequency of the indoor unit; and when the temperature of the coil pipe is not more than the set target temperature of the coil pipe, increasing the current running frequency of the compressor to obtain a second target frequency, selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit, and controlling the compressor 35 of the air conditioner according to the frequency of the indoor unit.
The heating control device with the structure can be applied to an air conditioner, runs a corresponding software program, executes heating control according to the flow of the figure 1, solves the problem that heating is uncomfortable due to slow indoor temperature rise and low-temperature outlet air blow, and improves the heating operation performance of the air conditioner.
Referring to fig. 4, a block diagram of another embodiment of a heating control device of an air conditioner according to the present invention is shown.
As shown in fig. 4, the control device of this embodiment includes the structural units, and the functions and mutual relationships of each structural unit are as follows:
an indoor temperature acquiring unit 41 for acquiring an indoor temperature.
And an outdoor temperature acquiring unit 42 for acquiring an outdoor temperature.
A temperature comparing unit 43 for comparing the indoor temperature acquired by the indoor temperature acquiring unit 41 with the first indoor temperature threshold value and the outdoor temperature acquired by the outdoor temperature acquiring unit 42 with the outdoor temperature threshold value, and outputting the comparison result.
A fuzzy control unit 45, configured to calculate a temperature difference between the indoor temperature acquired by the indoor temperature acquisition unit 41 and a set indoor target temperature to obtain an indoor temperature difference when the output result of the temperature comparison unit 43 is that the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, and perform a room temperature PID operation according to the indoor temperature difference to obtain a first target frequency; meanwhile, acquiring the coil temperature of the indoor heat exchanger, and comparing the coil temperature with a set coil target temperature; when the temperature of the coil pipe is higher than the set target temperature of the coil pipe, determining a first target frequency as the frequency of the indoor unit; and when the temperature of the coil pipe is not more than the set target temperature of the coil pipe, increasing the current running frequency of the compressor to obtain a second target frequency, selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit, and controlling the compressor 46 of the air conditioner according to the frequency of the indoor unit.
The room temperature PID control unit 44, its function includes two aspects: first, before the fuzzy control unit 45 does not perform the fuzzy control, when the output result of the temperature comparison unit 43 is that the indoor temperature is greater than the first indoor temperature threshold or the outdoor temperature is greater than the outdoor temperature threshold, the temperature difference between the indoor temperature acquired by the indoor temperature acquisition unit 41 and the set indoor target temperature is calculated to obtain the indoor temperature difference, the room temperature PID operation is performed according to the indoor temperature difference to obtain the first target frequency, the first target frequency is used as the indoor unit frequency, and the compressor 46 is controlled according to the indoor unit frequency. Secondly, in the process of executing the fuzzy control by the fuzzy control unit 45, the indoor temperature obtaining unit 41 still obtains the indoor temperature in real time and transmits the indoor temperature to the temperature comparing unit 43; when the output result of the temperature comparing unit 43 is that the indoor temperature is greater than the second indoor temperature threshold value and the fuzzy control unit 45 exits the control, the room temperature PID control unit 44 operates again, and controls the compressor 46 according to the indoor unit frequency by using the first target frequency obtained by the room temperature PID operation as the indoor unit frequency.
The heating control device with the structure can be applied to an air conditioner, runs a corresponding software program, executes heating control according to the flow of the figure 2, solves the problem that heating is uncomfortable due to slow indoor temperature rise and low-temperature outlet air blow, and improves the heating operation performance of the air conditioner.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A heating control method of an air conditioner, the method comprising:
the air conditioner is operated in a heating mode, the indoor temperature and the outdoor temperature are obtained, the indoor temperature is compared with a first indoor temperature threshold value, and the outdoor temperature is compared with an outdoor temperature threshold value;
if the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, performing fuzzy control as follows:
calculating the temperature difference between the indoor temperature and a set indoor target temperature to obtain the indoor temperature difference, and performing room temperature PID (proportion integration differentiation) operation according to the indoor temperature difference to obtain a first target frequency; acquiring the coil temperature of the indoor heat exchanger, and comparing the coil temperature with a set coil target temperature; if the coil temperature is higher than the set coil target temperature, determining the first target frequency as the frequency of the indoor unit; if the coil temperature is not higher than the set coil target temperature, increasing the current running frequency of a compressor to obtain a second target frequency, and selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit;
and controlling a compressor of the air conditioner according to the frequency of the indoor unit.
2. The control method according to claim 1, wherein if the indoor temperature is greater than the first indoor temperature threshold or the outdoor temperature is greater than the outdoor temperature threshold, performing the following room temperature PID control:
and determining the first target frequency as the indoor unit frequency, and controlling a compressor of an air conditioner according to the indoor unit frequency.
3. The control method according to claim 1, wherein if the coil temperature is not greater than the set coil target temperature for the first time after the air conditioner is turned on, the second target frequency is a set maximum heating frequency; and if the temperature of the coil pipe is not greater than the set target temperature of the coil pipe for the first time after the air conditioner is started, the second target frequency is between the current operating frequency and the maximum heating frequency.
4. The control method of claim 3, wherein if the coil temperature is not greater than the set coil target temperature for the first time after the air conditioner is turned on, the second target frequency is determined by:
and acquiring the current running frequency of the compressor, increasing the current running frequency by a set adjustment frequency every set adjustment time, and determining the increased frequency as the second target frequency.
5. The control method of claim 4, wherein after increasing the current operating frequency by the adjustment frequency as the second target frequency, determining whether a difference between the set coil target temperature and the coil temperature is not less than a set overshoot temperature value; if so, continuing to execute the process of increasing the current operating frequency by the adjusting frequency as the second target frequency after the adjusting time is reached, otherwise, keeping the second target frequency unchanged.
6. The control method according to any one of claims 1 to 5, characterized in that the method further comprises:
when the fuzzy control is executed, the indoor temperature is obtained in real time, and the indoor temperature is compared with a second indoor temperature threshold value; the second indoor temperature threshold is greater than the first indoor temperature threshold;
and if the indoor temperature is greater than the second indoor temperature threshold value, exiting the fuzzy control.
7. The control method according to claim 6, characterized in that the method further comprises:
after exiting the fuzzy control, the following room temperature PID control is performed:
and determining the first target frequency as the indoor unit frequency, and controlling a compressor of an air conditioner according to the indoor unit frequency.
8. A heating control apparatus of an air conditioner, the apparatus comprising:
an indoor temperature acquisition unit for acquiring an indoor temperature;
an outdoor temperature acquisition unit for acquiring an outdoor temperature;
the temperature comparison unit is used for comparing the indoor temperature with a first indoor temperature threshold value and the outdoor temperature with an outdoor temperature threshold value and outputting a comparison result;
the fuzzy control unit is used for calculating the temperature difference between the indoor temperature acquired by the indoor temperature acquisition unit and a set indoor target temperature to acquire an indoor temperature difference when the output result of the temperature comparison unit indicates that the indoor temperature is not greater than the first indoor temperature threshold and the outdoor temperature is not greater than the outdoor temperature threshold, and performing room temperature PID operation according to the indoor temperature difference to acquire a first target frequency; meanwhile, acquiring the coil temperature of the indoor heat exchanger, and comparing the coil temperature with a set coil target temperature; when the temperature of the coil pipe is higher than the set coil pipe target temperature, determining the first target frequency as the frequency of the indoor unit; when the temperature of the coil pipe is not more than the set target temperature of the coil pipe, increasing the current running frequency of a compressor to obtain a second target frequency, and selecting the larger value of the first target frequency and the second target frequency to determine the frequency of the indoor unit; and controlling a compressor of the air conditioner according to the frequency of the indoor unit.
9. The control device according to claim 8, wherein the indoor temperature obtaining unit obtains the indoor temperature in real time when the fuzzy control unit performs fuzzy control, and the fuzzy control unit exits the control if the output result of the temperature comparison unit is that the indoor temperature is greater than a second indoor temperature threshold; the second indoor temperature threshold is greater than the first indoor temperature threshold.
10. The control device of claim 9, wherein the device further comprises:
and the room temperature PID control unit is used for determining the first target frequency as the frequency of the indoor unit when the output result of the temperature comparison unit indicates that the indoor temperature is greater than the first indoor temperature threshold value or the outdoor temperature is greater than the outdoor temperature threshold value, or the output result of the temperature comparison unit indicates that the indoor temperature is greater than the second indoor temperature threshold value and the fuzzy control unit exits the control, and controlling a compressor of an air conditioner according to the frequency of the indoor unit.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3332012B2 (en) * | 1999-06-24 | 2002-10-07 | ダイキン工業株式会社 | Air conditioner |
| CN104236018A (en) * | 2014-09-05 | 2014-12-24 | 美的集团武汉制冷设备有限公司 | Air conditioner control method and air conditioner control device |
| CN104713196A (en) * | 2014-12-22 | 2015-06-17 | 青岛海尔空调器有限总公司 | Control method and device for variable frequency air conditioner refrigeration and variable frequency air conditioner |
| CN104764151A (en) * | 2015-03-27 | 2015-07-08 | 武汉海尔电器股份有限公司 | Control method of air conditioner |
| CN105042794A (en) * | 2015-08-31 | 2015-11-11 | 青岛海尔空调器有限总公司 | Air conditioner control method |
| CN105042795A (en) * | 2015-08-31 | 2015-11-11 | 青岛海尔空调器有限总公司 | Control method for wall-mounted frequency conversion air conditioner |
-
2017
- 2017-04-25 CN CN201710278664.8A patent/CN107084487B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3332012B2 (en) * | 1999-06-24 | 2002-10-07 | ダイキン工業株式会社 | Air conditioner |
| CN104236018A (en) * | 2014-09-05 | 2014-12-24 | 美的集团武汉制冷设备有限公司 | Air conditioner control method and air conditioner control device |
| CN104713196A (en) * | 2014-12-22 | 2015-06-17 | 青岛海尔空调器有限总公司 | Control method and device for variable frequency air conditioner refrigeration and variable frequency air conditioner |
| CN104764151A (en) * | 2015-03-27 | 2015-07-08 | 武汉海尔电器股份有限公司 | Control method of air conditioner |
| CN105042794A (en) * | 2015-08-31 | 2015-11-11 | 青岛海尔空调器有限总公司 | Air conditioner control method |
| CN105042795A (en) * | 2015-08-31 | 2015-11-11 | 青岛海尔空调器有限总公司 | Control method for wall-mounted frequency conversion air conditioner |
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