CN113483443B - Compressor frequency control method, air conditioner and computer readable storage medium - Google Patents
Compressor frequency control method, air conditioner and computer readable storage medium Download PDFInfo
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- CN113483443B CN113483443B CN202110677827.6A CN202110677827A CN113483443B CN 113483443 B CN113483443 B CN 113483443B CN 202110677827 A CN202110677827 A CN 202110677827A CN 113483443 B CN113483443 B CN 113483443B
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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
- F24F11/70—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
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. 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
- F24F2110/12—Temperature of the outside air
Abstract
The invention provides a compressor frequency control method, an air conditioner and a computer readable storage medium, wherein the compressor frequency control method comprises the following steps: s1, starting the air conditioner, identifying the operation mode of the air conditioner, and acquiring the target temperature T0 of the air conditioner; s2, the air conditioner acquires the current outdoor environment temperature Tao in real time, and determines a target saturation temperature adjusting range [ X, Y ] according to a first preset condition; s3, determining a target saturation temperature value Tz by the air conditioner according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0 and second preset conditions; s4, the air conditioner obtains the actual saturation temperature Tn; s5, adjusting the frequency of the compressor by the air conditioner according to the actual saturation temperature Tn and the target saturation temperature value Tz and a third preset condition; on one hand, the method can improve the accuracy and the applicability of the target saturation temperature value, is favorable for improving the accuracy of the frequency regulation of the compressor, realizes the accurate temperature control of the air conditioner, and enhances the energy-saving effect of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a compressor frequency control method, an air conditioner and a computer readable storage medium.
Background
The air conditioner is indispensable electrical equipment in people's daily life, has diversified structural style. With the continuous improvement of the industrial design level and the application of new processes, new materials, new shapes and new technologies to the air conditioner, various air conditioners are developed, and the control method of the air conditioner is also continuously optimized to meet the daily use requirements of people.
Regarding the control method related to the frequency adjustment of the compressor of the inverter air conditioner, the prior art mainly includes two methods:
the first way is to adjust the compressor frequency by the indoor temperature difference Δ T; specifically, an indoor environment temperature T inner ring and a user set temperature T setting are obtained, and then delta T is calculated to be T inner ring-T setting; during refrigeration: when the delta T is higher than a certain preset value, the compressor is increased in frequency, when the delta T is lower than the certain preset value, the compressor is decreased in frequency, and when the delta T is between the delta T and the preset value, the compressor keeps the current frequency; during heating: when the delta T is higher than a preset value, the compressor reduces the frequency, when the delta T is lower than the preset value, the compressor increases the frequency, and when the delta T is between the delta T and the preset value, the compressor keeps the current frequency.
The second mode is that according to the actual operation mode of the air conditioner, the frequency of the compressor is adjusted by determining at least one data of the temperature of an evaporator coil of the air conditioner, the temperature of a condenser coil, the saturation temperature of a high-pressure side and the saturation temperature of a low-pressure side; specifically, the temperature of an air conditioner evaporator coil is obtained by detecting the temperature of the middle part of the air conditioner evaporator coil, or the temperature of the air conditioner condenser coil is obtained by detecting the temperature of the middle part of the air conditioner condenser coil, or the high-pressure side refrigerant pressure of an air conditioner is detected and converted into the high-pressure side saturation temperature, or the low-pressure side refrigerant pressure of the air conditioner is detected and converted into the low-pressure side saturation temperature; on the basis, comparing at least one acquired data with a preset target saturation temperature of the air conditioner when leaving a factory; and when the acquired data is within a certain deviation range of the target saturation temperature, the compressor keeps the current frequency, otherwise, the compressor performs corresponding frequency adjustment according to different refrigeration or heating modes.
At present, in order to improve the accuracy of regulating and controlling the frequency of a compressor, an air conditioner in the prior art usually adopts a second mode, preferably, a high-pressure/low-pressure sensor is used for detecting the corresponding refrigerant pressure in real time, converting the refrigerant pressure into a saturation temperature, and comparing the saturation temperature with a target saturation temperature given by a set program so as to control the frequency of the compressor; however, in the actual operation process of the air conditioner, the target saturation temperature in the prior art is often a preset fixed value and cannot be adjusted, which easily results in poor accuracy of frequency regulation of the compressor and poor energy-saving effect of the air conditioner.
Disclosure of Invention
In view of the above, the present invention is directed to a compressor frequency control method, an air conditioner, and a computer readable storage medium, so as to solve the problems of poor accuracy of compressor frequency regulation and control and poor energy saving effect of the air conditioner in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a compressor frequency control method includes: s1, starting the air conditioner, identifying the operation mode of the air conditioner, and acquiring the target temperature T0 of the air conditioner; s2, the air conditioner acquires the current outdoor environment temperature Tao in real time, and determines a target saturation temperature adjusting range [ X, Y ] according to a first preset condition; s3, determining a target saturation temperature value Tz by the air conditioner according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0 and second preset conditions; s4, the air conditioner obtains the actual saturation temperature Tn; s5, adjusting the frequency of the compressor by the air conditioner according to the actual saturation temperature Tn and the target saturation temperature value Tz and a third preset condition; therefore, according to the air conditioner operation mode and the current outdoor environment temperature Tao, the compressor frequency control method determines a target saturation temperature adjusting range [ X, Y ] suitable for the current outdoor environment temperature, and then accurately obtains a target saturation temperature value Tz within the suitable target saturation temperature adjusting range according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0, and the target saturation temperature value Tz is used for regulating and controlling the compressor frequency; this compares with the target saturation temperature that is fixed numerical value among the prior art, make the final target saturation temperature value of confirming can make fully present outdoor ambient temperature, the actual conditions of the target temperature that the user required, can improve the accuracy, the suitability of target saturation temperature value on the one hand, be favorable to improving the accuracy nature of compressor frequency regulation and control, realize the accurate accuse temperature of air conditioner, strengthen the energy-conserving effect of air conditioner, on the other hand makes compressor frequency control process can fully laminate user's actual demand, make the air conditioner can in time adjust frequency effectively, the control temperature, strengthen user's use impression.
Further, the first preset condition includes: when B < Tao < a, the target saturation temperature adjustment range [ X, Y ] ═ a + m (Tao-B), B ], when C ≦ Tao ≦ B, the target saturation temperature adjustment range [ X, Y ] ═ a, B ], when D < Tao < C, the target saturation temperature adjustment range [ X, Y ] ═ a, B-n (C-Tao) ]; in the refrigeration mode, a target saturation temperature adjusting range [ X, Y ] is a target saturation temperature range of the low-pressure side of the air conditioner, A is the highest outdoor environment temperature of the air conditioner in the refrigeration mode allowing operation, D is the lowest outdoor environment temperature of the air conditioner in the refrigeration mode allowing operation, B, C is a preset outdoor environment temperature value, a and b are preset temperature data, and m and n are preset numerical data; in the heating mode, the target saturation temperature adjusting range [ X, Y ] is a target saturation temperature range of the high-pressure side of the air conditioner, a is the highest outdoor environment temperature in the heating mode in which the air conditioner is allowed to operate, D is the lowest outdoor environment temperature in the heating mode in which the air conditioner is allowed to operate, B, C is a preset outdoor environment temperature value, a and b are preset temperature data, and m and n are preset numerical data. Preferably, in the refrigeration mode, the value range of a is [ -2 ℃, 3 ℃), the value range of b is [14 ℃, 18 ℃), the value range of m is [0.5, 1], and the value range of n is [0.25, 1 ]; in the heating mode, the value range of a is [30 ℃, 33 ℃), the value range of b is [48 ℃, 52 ℃), the value range of m is [0.5, 1], and the value range of n is [0.25, 1 ]; therefore, by setting the first preset condition, the target saturation temperature adjusting range [ X, Y ] suitable for the current outdoor environment temperature can be determined according to the air conditioner operation mode and the current outdoor environment temperature Tao, the subsequent determination of the target saturation temperature value is facilitated, and compared with the target saturation temperature which is a fixed value in the prior art, the finally determined target saturation temperature value can fully meet the actual condition of the current outdoor environment temperature, the accuracy and the applicability of the target saturation temperature value can be improved, the accuracy of the frequency regulation and control of the compressor can be improved, the accurate temperature control of the air conditioner is realized, and the energy-saving effect of the air conditioner is enhanced.
Further, the second preset condition includes a second refrigeration preset condition and a second heating preset condition; the second preset refrigeration condition is Tz ═ X + (T0-E) × (Y-X)/P; wherein E is the lowest target temperature which can be set by the air conditioner in the refrigeration mode, and P is a preset dimensionless numerical value; the second preset heating condition is Tz ═ Y + (T0-G) × (Y-X)/Q; wherein G is the highest target temperature which can be set by the air conditioner in the heating mode, and Q is a preset dimensionless numerical value. Preferably, P is the number of temperature steps that can be executed by the air conditioner in the cooling mode, and Q is the number of temperature steps that can be executed by the air conditioner in the heating mode. Therefore, by setting the second preset condition, according to the air conditioner operation mode, the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0, the target saturation temperature value Tz is accurately obtained within a suitable target saturation temperature adjustment range, which is compared with the target saturation temperature of the prior art, which is a fixed value, the finally determined target saturation temperature value can fully meet the target temperature of the air conditioner, namely the target temperature required by a user, on one hand, the accuracy and the applicability of the target saturation temperature value can be improved, the accuracy of regulating and controlling the frequency of the compressor can be improved, the accurate temperature control of the air conditioner can be realized, the energy-saving effect of the air conditioner can be enhanced, on the other hand, the frequency control process of the compressor can fully meet the actual requirements of the user, the air conditioner can effectively adjust frequency and control temperature in time, and the use experience of a user is enhanced.
Further, the third preset condition includes a third refrigeration preset condition and a third heating preset condition; the third preset refrigeration condition is that in the refrigeration mode, when Tn is greater than Tz, the frequency of the compressor is increased, when Tn is greater than Tz, the frequency of the compressor is decreased, and when Tn is equal to Tz, the current frequency of the compressor is kept; the third heating preset condition is that in the heating mode, when Tn is greater than Tz, the frequency of the compressor is reduced, when Tn is greater than Tz, the frequency of the compressor is increased, and when Tn is equal to Tz, the current frequency of the compressor is maintained; therefore, the air conditioner can adjust the frequency of the compressor according to the actual saturation temperature Tn and the obtained target saturation temperature value Tz, and on the basis that the acquisition process of the target saturation temperature value can fully meet the current outdoor environment temperature and the target temperature required by a user, the accuracy of regulation and control of the frequency of the compressor is improved, the accurate temperature control of the air conditioner is realized, and the energy-saving effect of the air conditioner is enhanced.
Further, step S4 includes: s41, judging whether the air conditioner is started to operate for a first preset time; if yes, go to step S42; if not, the step S41 is returned to; s42, the air conditioner obtains the actual saturation temperature Tn; preferably, the first preset time is 5-15 min; therefore, after the air conditioner is started to operate for the first preset time, the actual saturation temperature Tn is detected and obtained, the air conditioner can obtain actual operation data after the air conditioner operates stably, the accuracy of the actual saturation temperature Tn can be ensured, the accuracy of the frequency regulation and control of the compressor can be improved, the accurate temperature control of the air conditioner is realized, and the energy-saving effect of the air conditioner is enhanced.
An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the compressor frequency control method.
A computer-readable storage medium, storing a computer program which, when read and executed by a processor, implements the compressor frequency control method.
Compared with the prior art, the compressor frequency control method, the air conditioner and the computer readable storage medium have the following advantages that:
according to the compressor frequency control method, the air conditioner and the computer readable storage medium, a target saturation temperature adjusting range [ X, Y ] suitable for the current outdoor environment temperature is determined according to the air conditioner operation mode and the current outdoor environment temperature Tao, and then a target saturation temperature value Tz is accurately obtained within the appropriate target saturation temperature adjusting range according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0 and is used for regulating and controlling the compressor frequency; this compares with the target saturation temperature that is fixed numerical value among the prior art, make the final target saturation temperature value of confirming can make fully present outdoor ambient temperature, the actual conditions of the target temperature that the user required, can improve the accuracy, the suitability of target saturation temperature value on the one hand, be favorable to improving the accuracy nature of compressor frequency regulation and control, realize the accurate accuse temperature of air conditioner, strengthen the energy-conserving effect of air conditioner, on the other hand makes compressor frequency control process can fully laminate user's actual demand, make the air conditioner can in time adjust frequency effectively, the control temperature, strengthen user's use impression.
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 compressor frequency control method according to an embodiment of the present invention.
Detailed Description
The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. In addition, the expression of a range of values in the present application follows the expression rules of a set of logarithms in conventional mathematics, such as: the closed interval is represented by { x | a ≦ x ≦ b } - [ a, b ].
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In the prior art, in the process of regulating and controlling the frequency of a compressor, a high-pressure/low-pressure sensor is often used for detecting the corresponding refrigerant pressure in real time, converting the refrigerant pressure into a saturation temperature, and comparing the saturation temperature with a target saturation temperature given by a set program so as to control the frequency of the compressor; however, in the actual operation process of the air conditioner, the target saturation temperature in the prior art is often a preset fixed value and cannot be adjusted, which easily results in poor accuracy of frequency regulation of the compressor and poor energy-saving effect of the air conditioner.
In order to solve the problems of poor accuracy of compressor frequency regulation and control and poor energy-saving effect of an air conditioner in the prior art, the present embodiment provides a compressor frequency control method, an air conditioner, and a computer-readable storage medium, as shown in fig. 1, the compressor frequency control method includes:
s1, starting the air conditioner, identifying the operation mode of the air conditioner, and acquiring the target temperature T0 of the air conditioner;
the air conditioner operation mode at least comprises a cooling mode and a heating mode; in addition, the air-conditioning operation mode may further include a plurality of conventional air-conditioning operation modes such as a dehumidification mode, an air supply mode, and the like. After the air conditioner is started, the operation mode of the air conditioner can be determined according to the operation mode set by a user, the operation mode of the last time, the operation mode which is most suitable for the current environment obtained through networking and the like. The air-conditioning target temperature T0 may be a temperature required by the user, which is set by the user, an operation target temperature in the last operation mode, an operation target temperature obtained through networking, or the like; in view of the fact that the air conditioner operation mode and the acquisition of the air conditioner operation mode are both in the prior art, detailed description is omitted here.
In addition, the present application focuses on two operation modes, i.e., a cooling mode and a heating mode. For other conventional operation modes, the corresponding air conditioner operation mode in the prior art can be adopted, and the application does not deeply discuss the corresponding air conditioner operation mode.
S2, the air conditioner acquires the current outdoor environment temperature Tao in real time, and determines a target saturation temperature adjusting range [ X, Y ] according to a first preset condition;
in step S2, the current outdoor ambient temperature Tao is obtained in real time by providing a temperature detection device in the outdoor unit of the air conditioner. The first preset condition comprises a first refrigeration preset condition and a first heating preset condition;
the first preset refrigeration condition includes: in the cooling mode, when B < Tao < a, the target saturation temperature adjustment range [ X, Y ] ═ a + m (Tao-B), B ], when C ≦ Tao ≦ B, the target saturation temperature adjustment range [ X, Y ] ═ a, B ], when D < Tao < C, the target saturation temperature adjustment range [ X, Y ] ═ a, B-n (C-Tao) ].
Wherein, in the refrigeration mode, the target saturation temperature adjusting range [ X, Y ] is actually the target saturation temperature range of the low-pressure side of the air conditioner. A is the maximum outdoor ambient temperature in the cooling mode of the air conditioner allowing operation, and D is the minimum outdoor ambient temperature in the cooling mode of the air conditioner allowing operation, i.e., A, D is the limit outdoor ambient temperature subject to the actual operation capability of the air conditioner. B. C is the preset outdoor environment temperature after the air conditioner manufacturer verifies according to the experimental detection, the [ C, B ] temperature range is the most common outdoor environment temperature range faced by the air conditioner during the refrigeration, in the range, all the air conditioner target temperature T0 need to be adjusted, and the common [ C, B ] can be [28 ℃, 45 ℃), [25 ℃, 50 ℃) and the like; similarly, a, b, m and n in the target saturation temperature regulation range [ X, Y ] are preset data verified by an air conditioner manufacturer according to experimental detection, wherein a and b are temperature data, and m and n are numerical data; preferably, the value range of a is [ -2 ℃, 3 ℃), the value range of b is [14 ℃, 18 ℃), the value range of m is [0.5, 1], the value range of n is [0.25, 1], wherein the values of a and b in practice need to be tested by experiments and must meet the reliability requirements of the air conditioner, the values of m and n in practice need to be larger, and when the outdoor environment temperature is too high or too low, the target saturation temperature regulation range [ X, Y ] needs to be larger, and the value of m and n can be preset by an air conditioner manufacturer to be smaller. Through reasonable debugging and setting of air conditioner manufacturers, the lower the saturation temperature of the low-pressure side of the air conditioner is during refrigeration, the better the effect is, and the lower the temperature of indoor side blowing air is, the better the effect is; since this temperature is related to the outdoor ambient temperature and also to the human body feeling, it is set in stages so that the appropriate target saturation temperature adjustment range [ X, Y ] can be obtained in different outdoor ambient temperature intervals.
The first heating preset condition includes: in the heating mode, when B < Tao < a, the target saturation temperature adjustment range [ X, Y ] ═ a + m (Tao-B), B ], when C ≦ Tao ≦ B, the target saturation temperature adjustment range [ X, Y ] ═ a, B ], when D < Tao < C, the target saturation temperature adjustment range [ X, Y ] ═ a, B-n (C-Tao) ].
Wherein, in the heating mode, the target saturation temperature adjusting range [ X, Y ] is actually the target saturation temperature range of the high-pressure side of the air conditioner. A is the maximum outdoor ambient temperature in the heating mode of the air conditioner allowing operation, and D is the minimum outdoor ambient temperature in the heating mode of the air conditioner allowing operation, i.e., A, D is the limit outdoor ambient temperature subject to the actual operation capability of the air conditioner. B. C is the preset outdoor environment temperature after the air conditioner manufacturer verifies according to the experimental detection, the [ C, B ] temperature range is the most common outdoor environment temperature range when the air conditioner heats, in the range, all the air conditioner target temperature T0 need to be adjusted, and the common [ C, B ] can be [ -10 ℃, 10 ℃) [ -25 ℃, 15 ℃), and the like; similarly, a, b, m and n in the target saturation temperature regulation range [ X, Y ] are preset data verified by an air conditioner manufacturer according to experimental detection, wherein a and b are temperature data, and m and n are numerical data; preferably, the value range of a is [30 ℃, 33 ℃), the value range of b is [48 ℃, 52 ℃), the value range of m is [0.5, 1], the value range of n is [0.25, 1], wherein the value of a and b in practice must be tested by experiments and must meet the requirement of air conditioner reliability. Through reasonable debugging and setting of air conditioner manufacturers, when the air conditioner is used for heating, the higher the saturation temperature of the high-pressure side of the air conditioner is, the better the effect is, namely, the higher the temperature blown out from the indoor side is, the better the effect is; since this temperature is related to the outdoor ambient temperature and also to the human body feeling, it is set in stages so that the appropriate target saturation temperature adjustment range [ X, Y ] can be obtained in different outdoor ambient temperature intervals.
In addition, the first preset condition may be set only as long as the first preset condition is set without being set according to the first preset cooling condition and the first preset heating condition. Namely, the first preset condition includes: when B < Tao < a, the target saturation temperature adjustment range [ X, Y ] ═ a + m (Tao-B), B ], when C ≦ Tao ≦ B, the target saturation temperature adjustment range [ X, Y ] ═ a, B ], when D < Tao < C, the target saturation temperature adjustment range [ X, Y ] ═ a, B-n (C-Tao) ].
Therefore, by setting the first preset condition, the target saturation temperature adjusting range [ X, Y ] suitable for the current outdoor environment temperature can be determined according to the air conditioner operation mode and the current outdoor environment temperature Tao, the subsequent determination of the target saturation temperature value is facilitated, and compared with the target saturation temperature which is a fixed value in the prior art, the finally determined target saturation temperature value can fully meet the actual condition of the current outdoor environment temperature, the accuracy and the applicability of the target saturation temperature value can be improved, the accuracy of the frequency regulation and control of the compressor can be improved, the accurate temperature control of the air conditioner is realized, and the energy-saving effect of the air conditioner is enhanced.
The content of the target saturation temperature adjustment range [ X, Y ], a, B, C, D, a, B, m, n is the same as the content of the first cooling preset condition and the first heating preset condition. In addition, for air conditioners of different air conditioner manufacturers, or even when different refrigerant types are adopted by the same air conditioner manufacturer, adjustment of a, B, C, D, a, B, m, and n may be caused, and details are not repeated.
S3, determining a target saturation temperature value Tz by the air conditioner according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0 and second preset conditions;
the second preset condition comprises a second refrigeration preset condition and a second heating preset condition;
the second preset refrigeration condition is Tz ═ X + (T0-E) × (Y-X)/P; wherein E is the lowest target temperature which can be set by the air conditioner in the refrigeration mode, P is a preset numerical value which is verified by an air conditioner manufacturer according to experimental detection, and P is a dimensionless numerical value; preferably, F is expressed as the highest target temperature that the air conditioner can set in the cooling mode, and after dimensions are removed, P is F-E +1, for example, taking the conventional air conditioner produced by the applicant as an example, the target temperature range that can be set in the cooling mode is [16 ℃, 32 ℃ ], and P is 32-16+1 is 17. In addition, P may also be the number of gears that the air conditioner can execute in the cooling mode, preferably is the number of temperature gears, and may be one gear corresponding to one temperature value or one gear corresponding to one temperature interval, which is consistent with the conventional cognition of people and is not described in detail.
The second preset heating condition is Tz ═ Y + (T0-G) × (Y-X)/Q; g is the highest target temperature which can be set by the air conditioner in the heating mode, Q is a preset value which is verified by an air conditioner manufacturer according to experimental detection, and Q is a dimensionless value; preferably, H is expressed as the lowest target temperature that can be set by the air conditioner in the heating mode, and after dimensions are removed, P is G-H +1, for example, in the case of a conventional air conditioner produced by the applicant, the target temperature range that can be set in the heating mode is [16 ℃, 32 ℃ ], and Q is 32-16+1 is 17. In addition, Q may also be the number of gear steps that the air conditioner can perform in the heating mode, preferably the number of temperature gear steps.
Therefore, by setting the second preset condition, according to the air conditioner operation mode, the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0, the target saturation temperature value Tz is accurately obtained within a suitable target saturation temperature adjustment range, which is compared with the target saturation temperature of the prior art, which is a fixed value, the finally determined target saturation temperature value can fully meet the target temperature of the air conditioner, namely the target temperature required by a user, on one hand, the accuracy and the applicability of the target saturation temperature value can be improved, the accuracy of regulating and controlling the frequency of the compressor can be improved, the accurate temperature control of the air conditioner can be realized, the energy-saving effect of the air conditioner can be enhanced, on the other hand, the frequency control process of the compressor can fully meet the actual requirements of the user, the air conditioner can effectively adjust frequency and control temperature in time, and the use experience of a user is enhanced.
S4, the air conditioner obtains the actual saturation temperature Tn;
in step S4, the manner in which the air conditioner obtains the actual saturation temperature Tn may be the same as the data obtaining manner of the second manner in the background of the present application. For example, in the heating mode, the high-pressure side saturation temperature is recorded as Tn by detecting the pressure of the refrigerant at the high-pressure side of the air conditioner and converting the pressure into the high-pressure side saturation temperature; in the cooling mode, the low-pressure side saturation temperature is represented as Tn by detecting the air conditioner low-pressure side refrigerant pressure and converting the pressure into the low-pressure side saturation temperature. The detection of the refrigerant pressure and the conversion between the pressures of different types of refrigerants and the corresponding saturation temperatures are all in the prior art, and are not described herein again.
In contrast, the step S4 includes:
s41, judging whether the air conditioner is started to operate for a first preset time; if yes, go to step S42; if not, the step S41 is returned to;
and S42, the air conditioner obtains the actual saturation temperature Tn.
The first preset time is a preset time length value of the air conditioner when leaving a factory, and is preferably 5-15 min; after the air conditioner is started to operate for the first preset time, the actual saturation temperature Tn is detected and obtained, so that the air conditioner can obtain actual operation data after stable operation, the accuracy of the actual saturation temperature Tn can be ensured, the accuracy of regulating and controlling the frequency of the compressor can be improved, the accurate temperature control of the air conditioner is realized, and the energy-saving effect of the air conditioner is enhanced.
And S5, adjusting the frequency of the compressor by the air conditioner according to the actual saturation temperature Tn and the target saturation temperature value Tz and a third preset condition.
The third preset condition comprises a third refrigeration preset condition and a third heating preset condition. The third preset refrigeration condition is that in the refrigeration mode, when Tn is greater than Tz, the frequency of the compressor is increased, when Tn is less than Tz, the frequency of the compressor is decreased, and when Tn is equal to Tz, the frequency of the compressor is maintained. The third heating preset condition is that under the heating mode, when Tn is larger than Tz, the frequency of the compressor is reduced, when Tn is smaller than Tz, the frequency of the compressor is increased, when Tn is equal to Tz, the current frequency of the compressor is kept, so that the frequency of the compressor can be adjusted according to the actual saturation temperature Tn and the obtained target saturation temperature value Tz, the acquisition process of the target saturation temperature value can fully accord with the current outdoor environment temperature and the target temperature required by a user, the accuracy of regulation and control of the frequency of the compressor is favorably improved, the accurate temperature control of the air conditioner is realized, and the energy-saving effect of the air conditioner is enhanced.
Meanwhile, according to the compressor frequency control method provided by the application, a target saturation temperature adjusting range [ X, Y ] suitable for the current outdoor environment temperature is determined according to the air conditioner operation mode and the current outdoor environment temperature Tao, and then a target saturation temperature value Tz is accurately obtained within the suitable target saturation temperature adjusting range according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0 and is used for regulating and controlling the compressor frequency; this compares with the target saturation temperature that is fixed numerical value among the prior art, make the final target saturation temperature value of confirming can make fully present outdoor ambient temperature, the actual conditions of the target temperature that the user required, can improve the accuracy, the suitability of target saturation temperature value on the one hand, be favorable to improving the accuracy nature of compressor frequency regulation and control, realize the accurate accuse temperature of air conditioner, strengthen the energy-conserving effect of air conditioner, on the other hand makes compressor frequency control process can fully laminate user's actual demand, make the air conditioner can in time adjust frequency effectively, the control temperature, strengthen user's use impression.
The invention also provides an air conditioner which adopts the compressor frequency control method; the air conditioner comprises a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to realize the compressor frequency control method, and in addition, for the specific component structure of the air conditioner, the prior art can be used for reference, which is not repeated herein. Meanwhile, the present application also provides a computer-readable storage medium storing a computer program, which is read and executed by a processor to implement the compressor frequency control method.
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 compressor frequency control method, comprising:
s1, starting the air conditioner, identifying the operation mode of the air conditioner, and acquiring the target temperature T0 of the air conditioner;
s2, the air conditioner acquires the current outdoor environment temperature Tao in real time, and determines a target saturation temperature adjusting range [ X, Y ] according to a first preset condition;
s3, determining a target saturation temperature value Tz by the air conditioner according to the target saturation temperature adjusting range [ X, Y ] and the air conditioner target temperature T0 and second preset conditions;
s4, the air conditioner obtains the actual saturation temperature Tn;
s5, adjusting the frequency of the compressor by the air conditioner according to the actual saturation temperature Tn and the target saturation temperature value Tz and a third preset condition;
the first preset condition includes: when B < Tao < a, the target saturation temperature adjustment range [ X, Y ] ═ a + m (Tao-B), B ], when C ≦ Tao ≦ B, the target saturation temperature adjustment range [ X, Y ] ═ a, B ], when D < Tao < C, the target saturation temperature adjustment range [ X, Y ] ═ a, B-n (C-Tao) ];
in the refrigeration mode, a target saturation temperature adjusting range [ X, Y ] is a target saturation temperature range of the low-pressure side of the air conditioner, A is the highest outdoor environment temperature of the air conditioner in the refrigeration mode allowing operation, D is the lowest outdoor environment temperature of the air conditioner in the refrigeration mode allowing operation, B, C is a preset outdoor environment temperature value, a and b are preset temperature data, and m and n are preset numerical data;
in the heating mode, a target saturation temperature adjusting range [ X, Y ] is a target saturation temperature range of the high-pressure side of the air conditioner, A is the highest outdoor environment temperature in the heating mode allowing the air conditioner to operate, D is the lowest outdoor environment temperature in the heating mode allowing the air conditioner to operate, B, C is a preset outdoor environment temperature value, a and b are preset temperature data, and m and n are preset numerical data;
the second preset condition comprises a second refrigeration preset condition and a second heating preset condition;
the second preset refrigeration condition is Tz ═ X + (T0-E) × (Y-X)/P; wherein E is the lowest target temperature which can be set by the air conditioner in the refrigeration mode, and P is a preset dimensionless numerical value;
the second preset heating condition is Tz ═ Y + (T0-G) × (Y-X)/Q; wherein G is the highest target temperature which can be set by the air conditioner in the heating mode, and Q is a preset dimensionless numerical value.
2. The method as claimed in claim 1, wherein in the cooling mode, a has a value in a range of [ -2 ℃, 3 ℃, b has a value in a range of [14 ℃, 18 ℃, m has a value in a range of [0.5, 1], and n has a value in a range of [0.25, 1 ];
in the heating mode, the value range of a is [30 ℃, 33 ℃), the value range of b is [48 ℃, 52 ℃), the value range of m is [0.5, 1], and the value range of n is [0.25, 1 ].
3. The compressor frequency control method according to claim 1, wherein P is the number of temperature steps that the air conditioner can perform in the cooling mode, and Q is the number of temperature steps that the air conditioner can perform in the heating mode.
4. The compressor frequency control method according to claim 1, wherein the third preset condition comprises a third cooling preset condition, a third heating preset condition;
the third preset refrigeration condition is that in the refrigeration mode, when Tn is greater than Tz, the frequency of the compressor is increased, when Tn is greater than Tz, the frequency of the compressor is decreased, and when Tn is equal to Tz, the current frequency of the compressor is kept;
the third heating preset condition is that in the heating mode, when Tn > Tz, the compressor frequency is decreased, when Tn < Tz, the compressor frequency is increased, and when Tn ═ Tz, the compressor maintains the current frequency.
5. The compressor frequency control method as claimed in claim 1, wherein the step S4 includes:
s41, judging whether the air conditioner is started to operate for a first preset time; if yes, go to step S42; if not, the step S41 is returned to;
and S42, the air conditioner obtains the actual saturation temperature Tn.
6. A method as claimed in claim 5, wherein the first predetermined period is 5-15 min.
7. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the compressor frequency control method according to any one of claims 1 to 6.
8. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the compressor frequency control method according to any one of claims 1 to 6.
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Effective date of registration: 20221014 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Patentee before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |
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