CN109210712B - Method for controlling compressor of air conditioner based on distance - Google Patents
Method for controlling compressor of air conditioner based on distance Download PDFInfo
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- 230000008569 process Effects 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
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- 238000011217 control strategy Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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- 238000005070 sampling Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
- F24F2120/12—Position of occupants
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Abstract
The invention discloses a method for controlling an air conditioner compressor based on distance, which comprises the following steps: when the air conditioner operates, acquiring the real-time indoor temperature of a room where an indoor unit of the air conditioner is located, and judging whether the real-time indoor temperature meets a distance control condition; if the real-time indoor temperature meets the distance control condition, controlling an air conditioner to execute a distance control process; the distance control process includes cyclically executing the following winding switching control process: determining the real-time distance between indoor personnel and an indoor unit of an air conditioner, and comparing the real-time distance with a first set distance threshold; if the real-time distance is not smaller than the first set distance threshold, controlling a winding of the compressor to be in a triangular connection mode; and if the real-time distance is smaller than the first set distance threshold value, controlling the winding of the compressor to be in a star connection mode. By applying the invention, the overall operation performance of the air conditioner can be improved.
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 method for controlling a compressor of the air conditioner based on distance.
Background
The existing variable frequency air conditioner has the advantages of precise temperature control, less power consumption, low noise and the like compared with a fixed frequency air conditioner by adjusting the running frequency of a compressor. For the compressor, the star connection mode and the triangle connection mode exist in the internal winding wiring, and when the compressor runs at the same frequency, the efficiency of the compressor corresponding to different winding connection modes is not completely the same. At present, the winding connection mode of most compressors for air conditioners is determined after leaving factories, and cannot be changed in the operation process, and under certain operation frequencies, the efficiency of the compressor is not optimal under the determined winding connection mode, so that the optimal efficiency cannot be achieved in the whole air conditioner operation frequency range.
In order to solve the problem that the efficiency of the compressor is not optimal in the whole operating frequency range, a technology capable of adjusting the connection mode of the compressor winding in the operating process is provided. For example, chinese patent application publication No. CN107395093A proposes an air conditioner, which includes a compressor including a control circuit, wherein the control circuit controls one end of each winding of the compressor to be connected together to form a star connection when the compressor operates at a low frequency; when the compressor runs at high frequency, the control circuit controls the end-to-end connection of all windings of the compressor to form a triangular connection mode. Furthermore, the control circuit controls the connection mode of the windings to be switched between the star shape and the triangle shape according to the running frequency of the compressor, so that the running efficiency is improved.
In the above-described technology, the switching of the winding connection manner is controlled according to the operating frequency of the compressor, and the direct factor of the frequency affecting the operating efficiency of the compressor is used as the control condition, which is most direct and effective in terms of improving the efficiency. However, the air conditioner is mainly used to adjust the comfort of the indoor environment and improve the comfort of the human body. The switching of the winding connection mode is controlled simply according to the frequency of the compressor, although the running efficiency of the compressor can be improved, the comfort of the indoor environment cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a method for controlling an air conditioner compressor based on distance, which improves the overall operation performance of the air conditioner.
In order to achieve the purpose of the invention, the method provided by the invention is realized by adopting the following technical scheme:
a method of controlling an air conditioner compressor based on distance, the method comprising:
when the air conditioner operates, acquiring the real-time indoor temperature of a room where an indoor unit of the air conditioner is located, and judging whether the real-time indoor temperature meets a distance control condition; the distance control conditions at least comprise that the indoor temperature is smaller than a first temperature threshold value in a cooling operation mode and the indoor temperature is larger than a second temperature threshold value in a heating operation mode;
if the real-time indoor temperature meets the distance control condition, controlling an air conditioner to execute a distance control process;
the distance control process includes cyclically executing the following winding switching control process:
determining the real-time distance between indoor personnel and an indoor unit of an air conditioner, and comparing the real-time distance with a first set distance threshold;
if the real-time distance is not smaller than the first set distance threshold, controlling a winding of the compressor to be in a triangular connection mode;
if the real-time distance is smaller than the first set distance threshold value, controlling a winding of the compressor to be in a star connection mode;
in the distance control process, the winding of the compressor is controlled to be in a triangular connection mode or a star connection mode, and meanwhile the running frequency of the compressor is adjusted based on the real-time indoor temperature difference between the real-time indoor temperature and the indoor temperature target value.
Preferably, the method further comprises: in the course of the distance control process,
controlling the running frequency of the compressor to be not less than a set critical frequency while controlling the winding of the compressor to be in a triangular connection mode;
and controlling the running frequency of the compressor to be less than the set critical frequency while controlling the winding of the compressor to be in a star connection mode.
Preferably, the method further comprises:
if the real-time distance is not smaller than the first set distance threshold, comparing the real-time distance with a second set distance threshold; the second set distance threshold is greater than the first set distance threshold;
and if the real-time distance is greater than the second set distance threshold value, acquiring the operating frequency determined based on the real-time indoor temperature difference while controlling the winding of the compressor to be in a triangular connection mode, comparing the operating frequency with a set high-frequency value, and if the operating frequency determined based on the real-time indoor temperature difference is not greater than the set high-frequency value, controlling the compressor to operate by taking the set high-frequency value as the actual operating frequency.
According to the method, when the windings of the compressor are controlled to be switched from the delta connection mode to the star connection mode or from the star connection mode to the delta connection mode, the compressor is controlled to stop firstly and then switched.
Preferably, the method further comprises: and if the real-time indoor temperature does not meet the distance control condition, controlling a winding of the compressor to be in a triangular connection mode.
The method for determining the real-time distance between the indoor personnel and the indoor unit of the air conditioner specifically comprises the following steps:
and detecting a heat source in a room where the indoor unit is located, and determining the real-time distance between the heat source and the indoor unit as the real-time distance between the indoor personnel and the indoor unit of the air conditioner.
Preferably, the detecting a heat source in a room where the indoor unit is located, and determining a real-time distance between the heat source and the indoor unit specifically include:
controlling an infrared sensor in an indoor unit to perform rotary scanning to obtain temperature information within a scanning range, and obtaining a heat source temperature curve according to the temperature information;
and determining a heat source in the room and the real-time distance between the heat source and the indoor unit according to the heat source temperature curve.
The method for determining the real-time distance between the indoor personnel and the indoor unit of the air conditioner specifically comprises the following steps:
and acquiring the real-time distance between a person in a room where the indoor unit is located and the indoor unit by adopting an infrared ranging unit with an infrared ranging sensor, wherein the real-time distance is used as the real-time distance between the indoor person and the indoor unit of the air conditioner.
Compared with the prior art, the invention has the advantages and positive effects that: by adopting the control method, the real-time distance between indoor personnel and the indoor machine is taken as a condition for switching the connection mode of the compressor winding, and in order to realize the comfort of the personnel, the frequency, the wind speed and the like of the air conditioner need to be adjusted differently under different distances, namely, different control strategies for realizing the comfort of the indoor environment are correspondingly arranged under different distances, so that the distance between the personnel and the indoor machine indirectly reflects the comfort of the indoor environment, and compared with the switching of the connection mode of the compressor frequency control in the prior art, the intelligent control of the compressor based on the environment can be realized, and the consideration of the environmental comfort and the running efficiency of the compressor is realized; and the distance between the indoor personnel and the indoor unit is an indirect factor reflecting the operation efficiency of the compressor, but is a direct parameter to be referred to for adjusting the frequency of the compressor to make the indoor comfort, so that the switching of the winding connection mode is controlled by the distance, the prejudgment and the advanced control on the winding connection mode of the compressor can be realized, the response is rapid, and the control reliability is higher. And, through setting up the distance control condition, only just carry out the distance control process when indoor temperature satisfies the distance control condition, through the distance control condition of reasonable settlement, can all realize the comfortable environmental control and the high-efficient operation of compressor of quick adjustment indoor environment to human under the different situation, improve air conditioner operating performance.
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 flow chart of one embodiment of a method of controlling an air conditioner compressor based on distance in accordance with the present invention;
fig. 2 is a flowchart of another embodiment of a method for controlling a compressor of an air conditioner based on distance 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 method for controlling a compressor of an air conditioner based on distance according to the present invention is shown, and specifically, a flow chart of a method for controlling a compressor according to an embodiment of the present invention is shown, which is a flow chart of a method for controlling a compressor that is compatible with both environmental comfort and compressor operation efficiency.
As shown in fig. 1, the method for implementing the control of the compressor of the air conditioner in the embodiment comprises a control process formed by the following steps:
step 101: when the air conditioner operates, the real-time indoor temperature of a room where the air conditioner is located is obtained, and whether the real-time indoor temperature meets the distance control condition or not is judged.
The real-time indoor temperature refers to the indoor environment temperature of a room where the air conditioner is located, which is continuously acquired according to a certain sampling frequency. For example, it can be obtained by a temperature detection device provided on the air conditioner. The distance control condition is a preset, known condition, and is a determination condition for determining whether or not the distance control can be executed. By reasonably setting the distance control condition, the comfort control of the air conditioner on the human body can be realized under different conditions. For example, the distance control condition includes at least: in the cooling operation mode, the ambient temperature is less than a first temperature threshold value; in the heating operation mode, the ambient temperature is greater than a second temperature threshold; and the first temperature threshold is greater than the second temperature threshold. For example, the first temperature threshold is 26 ℃ and the second temperature threshold is 22 ℃. After the real-time indoor temperature is obtained, a corresponding temperature threshold value is selected according to the air conditioner operation mode, and then the real-time indoor temperature is compared with the selected temperature threshold value to judge whether the distance control condition is met.
Step 102: and when the real-time indoor temperature meets the distance control condition, controlling the air conditioner to execute a distance control process. The distance control process is described with reference to steps 103 to 106.
Step 103: and determining the real-time distance between the indoor personnel and the indoor unit of the air conditioner, and comparing the real-time distance with a first set distance threshold value.
And the real-time distance is the distance between indoor personnel and the air conditioner, which is continuously obtained and updated according to the set sampling frequency after the air conditioner is started to operate. The detection of the persons in the room and the determination of the distance between the persons and the air conditioner can be realized by the prior art. As a preferred embodiment, determining the real-time distance between the indoor person and the indoor unit of the air conditioner specifically includes: and detecting a heat source in a room where the indoor unit is positioned, and determining the real-time distance between the heat source and the indoor unit as the real-time distance between indoor personnel and the indoor unit of the air conditioner. The method for detecting the heat source in the room and determining the real-time distance between the heat source and the indoor unit specifically comprises the following steps: controlling an infrared sensor in the indoor unit to perform rotary scanning to obtain temperature information within a scanning range, and obtaining a heat source temperature curve according to the temperature information; and determining a heat source in the room and the real-time distance between the heat source and the indoor unit according to the heat source temperature curve. As another preferred embodiment, the determining the real-time distance between the indoor person and the indoor unit of the air conditioner specifically includes: and acquiring the real-time distance between a person in a room where the indoor unit is located and the indoor unit by adopting an infrared ranging unit with an infrared ranging sensor, and taking the real-time distance as the real-time distance between the indoor person and the indoor unit of the air conditioner.
The first set distance threshold is a preset known distance value and is used for reflecting the distance between indoor personnel and the indoor unit. The threshold value may be a default value preset in the control program at the time of factory shipment, or may be a value set by the user of the air conditioner, and can be modified by authorization. And after the real-time distance is acquired, comparing the real-time distance with a first set distance threshold value, and executing different compressor control processing according to the comparison result.
Step 104: and judging whether the real-time distance is smaller than a first set distance threshold value. If yes, control of step 105 is executed; otherwise, control of step 106 is executed.
Step 105: if step 104 determines that the real-time distance is less than the first set distance threshold, the windings of the compressor are controlled to be in a star configuration.
And if the real-time distance is smaller than the first set distance threshold value, the real-time distance is smaller, and the fact that the person is close to the indoor unit is indicated. In this case, to avoid discomfort from the outlet air due to inadequate temperature to blow on the person's body, the compressor will typically be operated at a low frequency. Therefore, the winding of the compressor is controlled in a star connection mode in advance, so that better operation efficiency of the compressor can be obtained in the subsequent low-frequency operation state of the compressor.
Step 106: if step 104 determines that the real-time distance is not less than the first set distance threshold, the windings of the compressor are controlled to be in a delta connection mode.
If the real-time distance is not smaller than the first set distance threshold value, the real-time distance is larger at the moment, and the fact that the personnel are far away from the indoor unit is indicated. In this case, the compressor will generally be operated at a high frequency in order to improve the comfort of the environment surrounding the remote personnel and thus improve the comfort of the personnel. Therefore, the windings of the compressor are controlled in a delta connection mode in advance, so that better operation efficiency of the compressor can be obtained in the subsequent high-frequency operation state of the compressor.
The control of the compressors in star connection or delta connection can be realized by using the prior art, and the embodiment is not limited to this.
And, the winding switching control process constituted by the above steps is executed cyclically. That is, in the process of controlling the compressor to work in the star connection mode or the delta connection mode, the step 103 of obtaining the real-time distance and the subsequent comparison and judgment process are still continuously executed, and the connection mode of the windings of the compressor is controlled to be switched to the connection mode if the requirement on the connection mode of the windings is met.
In addition, in the distance control process, the winding of the compressor is controlled to be in a delta connection mode in step 106 or in a star connection mode in step 105, and meanwhile, the running frequency of the compressor is adjusted based on the real-time indoor temperature difference between the real-time indoor temperature and the indoor temperature target value, so that the technical effects of accurate temperature adjustment and low energy consumption of the inverter air conditioner are achieved. And adjusting the running frequency of the compressor based on the real-time indoor temperature difference, preferably performing PID (proportion integration differentiation) operation or incremental PID operation based on the real-time indoor temperature difference, determining the real-time frequency, and controlling the compressor to run at the real-time frequency. The specific method and implementation process for performing PID operation or incremental PID operation control according to the deviation may refer to the prior art. The indoor temperature target value is a temperature value expected to be achieved indoors, and may be a preset default value or a value set by a user.
By adopting the control method of the air conditioner compressor of the embodiment, after entering the distance control process, the real-time distance between indoor personnel and the indoor unit is taken as the condition for switching the connection mode of the compressor winding, and in order to realize the comfort of the personnel, the frequency, the wind speed and the like of the air conditioner need to be adjusted differently under different distances, namely, different control strategies for realizing the comfort of the indoor environment are correspondingly arranged under different distances, so that the distance between the personnel and the indoor unit indirectly reflects the comfort of the indoor environment, and compared with the switching of the compressor frequency control connection mode adopted in the prior art, the intelligent control of the compressor based on the environment can be realized, and the consideration of the environment comfort and the compressor operation efficiency is achieved; and the distance between the indoor personnel and the indoor unit is an indirect factor reflecting the operation efficiency of the compressor, but is a direct parameter to be referred to for adjusting the frequency of the compressor to make the indoor comfort, so that the switching of the winding connection mode is controlled by the distance, the prejudgment and the advanced control on the winding connection mode of the compressor can be realized, the response is rapid, and the control reliability is higher. And, the distance control process is just carried out when satisfying the distance control condition, can not consider the control of distance to the air conditioner under the unsuitable condition of indoor temperature, avoids influencing the emergence of human travelling comfort because of the distance control can not realize the quick adjustment of indoor temperature. Therefore, the comfort control of the air conditioner on the human body and the efficient operation of the compressor can be realized under different conditions, and the operation performance of the air conditioner is improved.
Referring to fig. 2, there is shown a flow chart of another embodiment of a method for controlling a compressor of an air conditioner based on distance according to the present invention, and more particularly, a flow chart of a method for controlling a compressor according to an embodiment of the present invention that is compatible with both environmental comfort and compressor operation efficiency.
As shown in fig. 2, the method for implementing the control of the compressor of the air conditioner of the embodiment comprises the following steps:
step 201: when the air conditioner operates, the real-time indoor temperature of a room where the air conditioner is located is obtained, and whether the real-time indoor temperature meets the distance control condition or not is judged. If not, go to step 202, and if so, go to step 203. The specific process of determining whether the real-time indoor temperature satisfies the distance control condition is described with reference to the corresponding steps in the embodiment of fig. 1.
Step 202: and if the real-time indoor temperature does not meet the distance control condition, controlling the winding of the compressor to be in a triangular connection mode.
As described above, the distance control conditions include at least: in the cooling operation mode, the ambient temperature is less than a first temperature threshold value; in the heating operation mode, the ambient temperature is greater than the second temperature threshold. If the real-time indoor temperature does not meet the distance control condition, the difference between the indoor temperature and the comfortable temperature is larger. In this case, it is generally necessary to control the high-frequency operation of the air conditioner so that the indoor temperature is rapidly brought close to the comfortable temperature. Therefore, the windings of the compressor are controlled to be in a delta connection mode, so that better operation efficiency of the compressor can be obtained in a subsequent high-frequency operation state of the compressor.
And when the real-time indoor temperature meets the distance control condition, controlling the air conditioner to execute a distance control process. The distance control process is described with reference to steps 203 to 208.
Step 203: and determining the real-time distance between the indoor personnel and the indoor unit of the air conditioner, and comparing the real-time distance with a first set distance threshold value. The more specific implementation of this step is described with reference to the corresponding steps in the embodiment of fig. 1.
Step 204: and judging whether the real-time distance is smaller than a first set distance threshold value. If yes, go to step 209; otherwise, step 205 is performed.
Step 205: if it is determined in step 204 that the real-time distance is not less than the first set distance threshold, the real-time distance is compared with the second set distance threshold, and it is determined whether the real-time distance is greater than the second set distance threshold. The control of step 206 or step 207 is executed according to the judgment result.
The second set distance threshold is larger than the first set distance threshold and is a preset numerical value, and the size of the distance between indoor personnel and the indoor unit is reflected. Similarly, the second set distance threshold may be a default preset in the control program at the time of factory shipment, or may be a value set by the user of the air conditioner, and can be modified by authorization.
Step 206: if the real-time distance is judged to be not smaller than the first set distance threshold value and not larger than the second set distance threshold value, the real-time distance is moderate in size, and the winding of the compressor is controlled to be in a triangular connection mode so as to improve the operation efficiency of the compressor. Meanwhile, the operation frequency of the compressor is also adjusted, specifically, the operation frequency of the compressor is adjusted based on the real-time indoor temperature difference between the real-time indoor temperature and the indoor temperature target value, and the technical effects of accurate temperature adjustment and low energy consumption of the variable frequency air conditioner are achieved. The specific frequency adjustment process is described with reference to the embodiment of fig. 1.
Step 207: if the real-time distance is larger than the second set distance threshold value, the real-time distance is larger, and the winding of the compressor is controlled to be in a triangular connection mode, so that the running efficiency of the compressor is improved. Meanwhile, the operation frequency of the compressor is also adjusted, and the compressor is controlled to operate at a frequency not lower than the set high frequency value. Specifically, the operation frequency determined based on the real-time indoor temperature difference is firstly acquired and compared with the set high-frequency value, and if the operation frequency determined based on the real-time indoor temperature difference is not greater than the set high-frequency value, the compressor is controlled to operate by taking the set high-frequency value as the actual operation frequency. Of course, if the operation frequency determined based on the real-time indoor temperature difference is greater than the set high frequency value, the operation of the compressor is controlled by the operation frequency determined based on the real-time indoor temperature difference, so that the technical effect of quickly adjusting the indoor temperature to a comfortable degree is achieved.
Step 208: if step 204 determines that the real-time distance is less than the first set distance threshold, the windings of the compressor are controlled to be in a star configuration.
And if the real-time distance is smaller than the first set distance threshold value, the real-time distance is smaller, and the fact that the person is close to the indoor unit is indicated. In this case, to avoid discomfort from the outlet air due to inadequate temperature to blow on the person's body, the compressor will typically be operated at a low frequency. Therefore, the winding of the compressor is controlled in a star connection mode in advance, so that better operation efficiency of the compressor can be obtained in the subsequent low-frequency operation state of the compressor. Meanwhile, the operation frequency of the compressor is also adjusted, specifically, the operation frequency of the compressor is adjusted based on the real-time indoor temperature difference between the real-time indoor temperature and the indoor temperature target value, and the technical effects of accurate temperature adjustment and low energy consumption of the variable frequency air conditioner are achieved. The specific frequency adjustment process is described with reference to the embodiment of fig. 1.
In other preferred embodiments, in the winding switching control process, the windings of the compressor are controlled to be in a delta connection mode, and meanwhile, the running frequency of the compressor is controlled to be not less than the set critical frequency. The set critical frequency is a known frequency value, generally a frequency value at which the operating efficiency of the compressor is turned over in the two winding connection modes, and can be determined according to the operating efficiency curve of the compressor. Therefore, the operation frequency of the compressor in the delta connection mode is limited to the minimum operation frequency, so that the compressor can keep higher operation efficiency in the winding connection mode.
Similarly, in the winding switching control process, the operation frequency of the compressor is controlled to be less than the set critical frequency while the winding of the compressor is controlled to be in a star connection mode. Therefore, the maximum operation frequency of the compressor in the star connection mode is limited, so that the compressor can keep high operation efficiency in the winding connection mode.
By adopting the method of the embodiment to control the compressor of the air conditioner, the intelligent control of the compressor based on the comfort level of the environment can be realized, the consideration of the environmental comfort and the running efficiency of the compressor is achieved, the problems of reducing the comfort level of the indoor environment and reducing the service life of the compressor caused by frequently switching the winding connection mode of the compressor can be avoided, and the overall performance of the air conditioner is improved.
In other preferred embodiments, when the windings of the compressor are controlled to be switched from the delta connection mode to the star connection mode or from the star connection mode to the delta connection mode, the compressor is controlled to be stopped firstly and then switched, the safety of the compressor is guaranteed, and the operation reliability and the service life of the compressor are further improved.
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 (7)
1. A method for controlling an air conditioner compressor based on distance, the method comprising:
when the air conditioner operates, acquiring the real-time indoor temperature of a room where an indoor unit of the air conditioner is located, and judging whether the real-time indoor temperature meets a distance control condition; the distance control conditions at least comprise that the indoor temperature is smaller than a first temperature threshold value in a cooling operation mode and the indoor temperature is larger than a second temperature threshold value in a heating operation mode;
if the real-time indoor temperature meets the distance control condition, controlling an air conditioner to execute a distance control process;
the distance control process includes cyclically executing the following winding switching control process:
determining the real-time distance between indoor personnel and an indoor unit of an air conditioner, and comparing the real-time distance with a first set distance threshold;
if the real-time distance is not smaller than the first set distance threshold, controlling a winding of the compressor to be in a triangular connection mode;
if the real-time distance is smaller than the first set distance threshold value, controlling a winding of the compressor to be in a star connection mode;
in the distance control process, when a winding of the compressor is controlled to be in a triangular connection mode or a star connection mode, the running frequency of the compressor is adjusted based on the real-time indoor temperature difference between the real-time indoor temperature and the indoor temperature target value;
the method further comprises the following steps: in the course of the distance control process,
controlling the running frequency of the compressor to be not less than a set critical frequency while controlling the winding of the compressor to be in a triangular connection mode;
controlling the running frequency of the compressor to be smaller than the set critical frequency while controlling the winding of the compressor to be in a star connection mode;
the set critical frequency is a frequency value of the operating efficiency of the compressor turning under two winding connection modes of triangle and star.
2. The method of claim 1, further comprising:
if the real-time distance is not smaller than the first set distance threshold, comparing the real-time distance with a second set distance threshold; the second set distance threshold is greater than the first set distance threshold;
and if the real-time distance is greater than the second set distance threshold value, acquiring the operating frequency determined based on the real-time indoor temperature difference while controlling the winding of the compressor to be in a triangular connection mode, comparing the operating frequency with a set high-frequency value, and if the operating frequency determined based on the real-time indoor temperature difference is not greater than the set high-frequency value, controlling the compressor to operate by taking the set high-frequency value as the actual operating frequency.
3. The method as claimed in claim 1, wherein the compressor is controlled to stop before switching when the windings of the compressor are switched from delta connection to star connection or from star connection to delta connection.
4. The method of claim 1, further comprising:
and if the real-time indoor temperature does not meet the distance control condition, controlling a winding of the compressor to be in a triangular connection mode.
5. The method according to any one of claims 1 to 4, wherein the determining a real-time distance between an indoor person and an indoor unit of an air conditioner specifically comprises:
and detecting a heat source in a room where the indoor unit is located, and determining the real-time distance between the heat source and the indoor unit as the real-time distance between the indoor personnel and the indoor unit of the air conditioner.
6. The method according to claim 5, wherein the detecting a heat source in a room where the indoor unit is located and determining a real-time distance between the heat source and the indoor unit specifically comprise:
controlling an infrared sensor in an indoor unit to perform rotary scanning to obtain temperature information within a scanning range, and obtaining a heat source temperature curve according to the temperature information;
and determining a heat source in the room and the real-time distance between the heat source and the indoor unit according to the heat source temperature curve.
7. The method according to any one of claims 1 to 4, wherein the determining a real-time distance between an indoor person and an indoor unit of an air conditioner specifically comprises:
and acquiring the real-time distance between a person in a room where the indoor unit is located and the indoor unit by adopting an infrared ranging unit with an infrared ranging sensor, wherein the real-time distance is used as the real-time distance between the indoor person and the indoor unit of the air conditioner.
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| CN108361926B (en) * | 2018-01-26 | 2020-02-04 | 青岛海尔空调器有限总公司 | Air conditioner control method based on temperature and cold feeling and air conditioner |
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Effective date of registration: 20210630 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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