CN113932364B - Control method of air conditioner and air conditioner - Google Patents
Control method of air conditioner and air conditioner Download PDFInfo
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- CN113932364B CN113932364B CN202111208462.9A CN202111208462A CN113932364B CN 113932364 B CN113932364 B CN 113932364B CN 202111208462 A CN202111208462 A CN 202111208462A CN 113932364 B CN113932364 B CN 113932364B
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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
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The embodiment of the invention provides a control method of an air conditioner and the air conditioner, wherein the control method of the air conditioner comprises the following steps: acquiring a first change value of an air conditioner operation parameter in a first time period; controlling the running frequency of a compressor of the air conditioner according to the first change value; wherein the air conditioner operation parameters include at least one or a combination of: indoor ambient temperature, outdoor ambient temperature, evaporating temperature of the outdoor heat exchanger, condensing temperature of the indoor heat exchanger. The invention solves the technical problem that the energy-saving means of the existing air conditioner can reduce the comfort of indoor heat exchange.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner control method and an air conditioner.
Background
Along with the requirements of energy conservation and environmental protection are higher and higher, the admission level of energy efficiency is also improved year by year, and the demand of consumers is increased, so that the air conditioner with high energy efficiency is favored by the consumers more and more. The existing air conditioner usually adjusts the indoor temperature according to the frequency of the compressor, the rotating speed of the fan and the opening degree of the expansion valve, so that the indoor temperature reaches the set temperature.
However, the common energy saving means is to adjust the set temperature of the indoor unit, that is, to reduce the heat exchange requirement of the indoor unit, so as to achieve the effect of energy saving. The energy-saving means is simple and rough, and although the energy consumption of the air conditioner can be reduced, the comfort of indoor heat exchange can be reduced, and the user experience is influenced.
Disclosure of Invention
In order to solve the problem that the energy-saving means of the existing air conditioner can reduce the comfort of indoor heat exchange, the invention provides a control method of the air conditioner, which comprises the following steps: acquiring a first change value of an air conditioner operation parameter in a first time period; controlling the running frequency of a compressor of the air conditioner according to the first change value; wherein the air conditioner operation parameters comprise at least one of the following or a combination thereof: indoor ambient temperature, outdoor ambient temperature, evaporating temperature of the outdoor heat exchanger, condensing temperature of the indoor heat exchanger.
The technical effect achieved after the technical scheme is adopted is as follows: the mode of accessible acquireing the first change value of air conditioner operational parameter in the first time cycle acquires the refrigerating capacity change and the refrigeration environmental change of air conditioner in the first time cycle to can change according to the first change value, also be exactly according to the refrigerating capacity change and the refrigeration environmental change of air conditioner, the corresponding adjustment is made to the compressor operating frequency of control air conditioner, and energy-conserving means is more reasonable, when reducing the air conditioner energy consumption, has guaranteed the travelling comfort of indoor heat transfer.
In this embodiment, the obtaining a first variation value of an operating parameter of an air conditioner in a first time period includes: controlling the air conditioner to operate in a cooling mode or a dehumidifying mode; acquiring a load demand value of the air conditioner; under the condition that the load demand value is smaller than or equal to a first threshold value, acquiring a first change value of an air conditioner operation parameter in a first time period; wherein the load demand is a difference of a subtraction of an indoor ambient temperature and a set temperature of the air conditioner.
The technical effect achieved after the technical scheme is adopted is as follows: under the condition that the air conditioner operates in a cooling mode or a dehumidifying mode, whether the air conditioner achieves a preset cooling effect or not can be judged according to the magnitude relation between the subtraction difference between the indoor environment temperature and the set temperature of the air conditioner and the first threshold value. If the difference between the indoor environment temperature and the set temperature of the air conditioner is smaller than or equal to the first threshold, the indoor environment temperature is close to the set temperature of the air conditioner enough, namely the air conditioner achieves a preset refrigeration effect, and at the moment, the running frequency of the air conditioner is properly adjusted, so that the comfort of indoor heat exchange is not influenced.
In this embodiment, the obtaining a first variation value of an operating parameter of an air conditioner in a first time period includes: acquiring temperature change values of at least two of indoor environment temperature, outdoor environment temperature, evaporation temperature of an outdoor heat exchanger and condensation temperature of an indoor heat exchanger in a first time period; and recording the minimum value of the temperature change values of the at least two in the first time period as the first change value.
The technical effect achieved after the technical scheme is adopted is as follows: because any one of the indoor environment temperature, the outdoor environment temperature, the evaporating temperature of the outdoor heat exchanger and the condensing temperature of the indoor heat exchanger is changed, the change of the refrigerating capacity of the air conditioner can be indirectly reflected, and any one temperature change value can be used as a first change value. In order to more accurately determine the change in the cooling capacity of the air conditioner, the minimum value of the temperature change values of the at least two air conditioners in the first time period is defined as a first change value.
In this embodiment, the controlling the compressor operation frequency of the air conditioner according to the first variation value includes: controlling the running frequency of a compressor of the air conditioner to be reduced under the condition that the first change value is smaller than or equal to a second threshold value; and/or controlling the running frequency of the compressor of the air conditioner to be unchanged under the condition that the first change value is larger than a second threshold value.
The technical effect achieved after the technical scheme is adopted is as follows: if the first change value is smaller than or equal to the second threshold value, the actual refrigerating capacity of the air conditioner is larger than or equal to the target refrigerating capacity range at the moment, and unnecessary energy consumption exists, so that the running frequency of a compressor of the air conditioner is controlled to be reduced, the energy consumption of the air conditioner is reduced, and the energy saving performance of the air conditioner is improved. If the first change value is greater than the second threshold value, it indicates that the actual refrigeration capacity of the air conditioner is lower than the target refrigeration capacity at the moment, and if the operation frequency of the compressor is reduced, the normal refrigeration effect of the air conditioner is affected, so that the operation frequency of the compressor of the air conditioner is controlled to be unchanged, and the comfort of a user of the air conditioner is ensured.
In this embodiment, after controlling the compressor operation frequency of the air conditioner according to the first variation value, the control method of the air conditioner further includes: acquiring a second change value of the air conditioner operation parameter in a second time period; controlling the running frequency of a compressor of the air conditioner according to the second change value; and acquiring the second variation value in the same manner as the first variation value.
The technical effect achieved after the technical scheme is adopted is as follows: after the compressor operation frequency of the air conditioner is controlled according to the first change value, the air conditioner is set to obtain a second change value of the air conditioner operation parameter in a second time period, the compressor operation frequency of the air conditioner is controlled according to the second change value, and the compressor operation frequency can be further adjusted, so that the energy consumption of the compressor can be further reduced, and the energy-saving effect of the air conditioner is further improved.
In this embodiment, the controlling the compressor operation frequency of the air conditioner according to the second variation value includes: controlling the running frequency of the compressor of the air conditioner to be reduced under the condition that the second variation value is smaller than or equal to a third threshold value; and/or under the condition that the first change value is larger than a third threshold value and smaller than a fourth threshold value, controlling the running frequency of the compressor of the air conditioner to be unchanged; and/or controlling the running frequency of the compressor of the air conditioner to be increased under the condition that the first change value is greater than or equal to a fourth threshold value; wherein the third threshold is less than the fourth threshold.
The technical effect achieved after the technical scheme is adopted is as follows: if the second variation value is less than or equal to the third threshold value, it indicates that the refrigeration capacity of the air conditioner is still higher than the target refrigeration capacity range at this time, and therefore the operation frequency of the compressor of the air conditioner needs to be controlled again to be reduced, so that the refrigeration capacity of the air conditioner is reduced to the target refrigeration capacity range, and unnecessary energy consumption of the air conditioner caused by the fact that the operation frequency of the compressor is too high is avoided; if the second variation value is larger than the third threshold value and smaller than the fourth threshold value, the current refrigerating capacity of the air conditioner is in the target refrigerating capacity range, and therefore the operation frequency of a compressor of the air conditioner is controlled to be unchanged; if the second variation value is larger than or equal to the fourth threshold value, the refrigerating capacity of the current air conditioner is lower than the target refrigerating capacity range, so that the running frequency of a compressor of the air conditioner is controlled to be increased, the refrigerating capacity of the air conditioner is improved to be within the target refrigerating capacity range, the phenomenon that the refrigerating effect of the air conditioner is reduced due to the fact that the running frequency of the compressor is too low is avoided, and the comfort of a user is affected.
In this embodiment, the method for controlling an air conditioner further includes: after the compressor running frequency of the air conditioner is controlled according to the second change value, a circulation mode is adopted, a second change value of the air conditioner running parameter in a second time period is obtained in a circulation mode, and the compressor running frequency operation of the air conditioner is controlled according to the second change value; exiting the loop mode if the second change value is greater than or equal to a fifth threshold.
The technical effect achieved after the technical scheme is adopted is as follows: when the refrigerating capacity of the air conditioner is too large or too small, the second change value of the air conditioner operation parameter in a second time period needs to be obtained in a circulating mode for multiple times, the operation frequency of the compressor of the air conditioner is controlled to operate according to the second change value, and the air conditioner can be controlled to exit the circulating mode until the second change value is larger than or equal to a fifth threshold value, namely the refrigerating capacity of the air conditioner is adjusted to be within a target refrigerating capacity range.
An embodiment of the present invention provides an air conditioner, including: the acquisition module is used for acquiring a first change value of an air conditioner operation parameter in a first time period; the control module is used for controlling the running frequency of a compressor of the air conditioner according to the first change value; wherein the air conditioner operation parameters include at least one or a combination of: indoor ambient temperature, outdoor ambient temperature, evaporating temperature of the outdoor heat exchanger, condensing temperature of the indoor heat exchanger.
An embodiment of the present invention provides an air conditioner, including: a computer-readable storage medium storing a computer program that when read and executed by a packaged IC, implements a control method of an air conditioner as described in any one of the preceding embodiments, and the packaged IC.
In summary, the above embodiments of the present application may have one or more of the following advantages or benefits:
(1) The mode of accessible acquireing the first change value of air conditioner operational parameter in the first time cycle acquires the refrigerating capacity change and the refrigeration environmental change of air conditioner in the first time cycle to can change according to the first change value, also be exactly according to the refrigerating capacity change and the refrigeration environmental change of air conditioner, the corresponding adjustment is made to the compressor operating frequency of control air conditioner, and energy-conserving means is more reasonable, when reducing the air conditioner energy consumption, has guaranteed the travelling comfort of indoor heat transfer.
(2) If the first change value is smaller than or equal to the second threshold value, the actual refrigerating capacity of the air conditioner is larger than or equal to the target refrigerating capacity range at the moment, and unnecessary energy consumption exists, so that the running frequency of a compressor of the air conditioner is controlled to be reduced, the energy consumption of the air conditioner is reduced, and the energy saving performance of the air conditioner is improved. If the first change value is greater than the second threshold value, it indicates that the actual refrigeration capacity of the air conditioner is lower than the target refrigeration capacity at the moment, and if the operation frequency of the compressor is reduced, the normal refrigeration effect of the air conditioner is affected, so that the operation frequency of the compressor of the air conditioner is controlled to be unchanged, and the comfort of a user of the air conditioner is ensured.
(3) After the compressor operation frequency of the air conditioner is controlled according to the first change value, the air conditioner is set to obtain a second change value of the air conditioner operation parameter in a second time period, and the compressor operation frequency of the air conditioner is controlled according to the second change value, so that the compressor operation frequency can be further adjusted, the energy consumption of the compressor can be further reduced, and the energy-saving effect of the air conditioner is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to a first embodiment of the present invention.
Fig. 2 is a detailed flowchart illustrating a control method of the air conditioner of fig. 1.
Fig. 3 is a schematic block diagram of an air conditioner according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A
Referring to fig. 1, a flowchart of a control method of an air conditioner according to a first embodiment of the present invention is shown. The control method of the air conditioner comprises the following steps:
first, a first variation value of an air conditioner operation parameter in a first time period is obtained.
Wherein the air conditioner operation parameters comprise at least one of the following or a combination thereof: indoor ambient temperature, outdoor ambient temperature, evaporating temperature of the outdoor heat exchanger, condensing temperature of the indoor heat exchanger.
Specifically, a temperature sensor is respectively arranged on an air inlet side of an indoor unit and an air outlet side of an outdoor unit of the air conditioner and is respectively used for detecting indoor environment temperature and outdoor environment temperature; meanwhile, temperature sensors are respectively arranged at the outdoor heat exchanger and the indoor heat exchanger of the air conditioner and are respectively used for detecting the evaporating temperature of the outdoor heat exchanger and the condensing temperature of the indoor heat exchanger.
Secondly, controlling the running frequency of the compressor of the air conditioner according to the first change value.
In a specific embodiment, the first change value of the air conditioner operation parameter in the first time period can be obtained, and the refrigerating capacity change and the refrigerating environment change of the air conditioner in the first time period can be obtained, so that the operation frequency of a compressor of the air conditioner can be controlled to be correspondingly adjusted according to the first change value, namely the refrigerating capacity change and the refrigerating environment change of the air conditioner, the energy-saving means is more reasonable, and the comfort of indoor heat exchange is ensured while the energy consumption of the air conditioner is reduced.
Further, with reference to fig. 1 and fig. 2, the obtaining a first variation value of an operating parameter of the air conditioner during a first time period includes: controlling the air conditioner to operate in a cooling mode or a dehumidifying mode; acquiring a load demand value of the air conditioner; under the condition that the load demand value is less than or equal to a first threshold value, acquiring a first change value of an air conditioner operation parameter in a first time period; wherein the load demand is a difference between a subtraction of an indoor ambient temperature and a set temperature of the air conditioner.
In one embodiment, when the air conditioner operates in a cooling mode or a dehumidifying mode, whether the air conditioner achieves a preset cooling effect can be determined according to a magnitude relation between a subtraction difference between an indoor ambient temperature and a set temperature of the air conditioner and a first threshold value. If the difference between the indoor environment temperature and the set temperature of the air conditioner is smaller than or equal to the first threshold, it is indicated that the indoor environment temperature is close enough to the set temperature of the air conditioner, that is, the air conditioner has achieved a preset cooling effect.
For example, the first threshold value has a value range of [ -1,3], and a preferred value of the first threshold value is 1. Under the condition that the air conditioner operates in a cooling mode or a dehumidifying mode, if the difference between the subtraction of the indoor environment temperature and the set temperature of the air conditioner is less than or equal to 1, the air conditioner achieves the preset cooling effect, so that the operating frequency of the air conditioner can be properly adjusted to reduce the energy consumption of the air conditioner.
Further, the obtaining a first variation value of the air conditioner operation parameter in the first time period includes: acquiring temperature change values of at least two of indoor environment temperature, outdoor environment temperature, evaporation temperature of an outdoor heat exchanger and condensation temperature of an indoor heat exchanger in a first time period; and recording the minimum temperature change value of the at least two in the first time period as the first change value.
Since any one of the indoor ambient temperature, the outdoor ambient temperature, the evaporating temperature of the outdoor heat exchanger and the condensing temperature of the indoor heat exchanger changes, and the change of the refrigerating capacity of the air conditioner is indirectly reflected, the minimum value of the temperature change values of at least two of the indoor ambient temperature, the outdoor ambient temperature, the evaporating temperature of the outdoor heat exchanger and the condensing temperature of the indoor heat exchanger in a first time period can be recorded as a first change value, and the running frequency of the compressor of the air conditioner is adjusted according to the minimum value of the temperature change values. By recording the minimum value of the temperature change value as the first change value, a numerical basis can be provided for the change of the refrigerating capacity of the air conditioner, so that the change of the refrigerating capacity of the air conditioner can be more accurately judged.
For example, Δ T1 is a change value of the indoor ambient temperature, Δ T2 is a change value of the outdoor ambient temperature, Δ T3 is a change value of the evaporation temperature of the outdoor heat exchanger, Δ T4 is a change value of the condensation temperature of the indoor heat exchanger, and Δ T5 is a first change value. If the indoor environment temperature change value Δ T1 is the smallest among Δ T1, Δ T2, Δ T3, and Δ T4, setting the indoor temperature change value Δ T1 as a first change value Δ T5; if the outdoor environment temperature change value delta T2 is minimum, taking the outdoor environment temperature change value delta T2 as a first change value delta T5; if the evaporation temperature change value delta T3 of the outdoor heat exchanger is minimum, taking the evaporation temperature change value delta T3 of the outdoor heat exchanger as a first change value delta T5; and if the condensation temperature change value delta T4 of the indoor heat exchanger is minimum, recording the condensation temperature change value delta T4 of the indoor heat exchanger as a first temperature change value delta T5.
Further, under the condition that the first change value is smaller than or equal to a second threshold value, controlling the running frequency of a compressor of the air conditioner to be reduced; and/or controlling the running frequency of the compressor of the air conditioner to be unchanged under the condition that the first change value is larger than a second threshold value.
In an embodiment, if the first variation value Δ T5 is less than or equal to the second threshold, it indicates that the minimum value of the temperature variation value is less than or equal to the second threshold, that is, the actual cooling capacity of the air conditioner is greater than or equal to the target cooling capacity, so that the operation frequency of the compressor of the air conditioner is controlled to be decreased by Δ F to reduce the energy consumption of the air conditioner. If the first variation value Δ T5 is greater than the second threshold, it indicates that the minimum value of the temperature variation value is greater than the second threshold, that is, the actual cooling capacity of the air conditioner is lower than the target cooling capacity at this time, and if the operation frequency of the compressor is reduced, the normal cooling effect of the air conditioner is affected, so that the operation frequency of the compressor of the air conditioner is controlled to be unchanged.
For example, the second threshold value has a value range of [ -1,1], and a preferred value of the second threshold value is 1. The value of Δ F is in the range of [0,8], and a preferred value of Δ F is 4. If the first change value delta T5 is less than or equal to 4, controlling the running frequency of a compressor of the air conditioner to be reduced by 4Hz; and if the first change value delta T5 is larger than 4, controlling the running frequency of the compressor of the air conditioner to be unchanged.
Further, after controlling the compressor operation frequency of the air conditioner according to the first variation value, the control method of the air conditioner further includes: acquiring a second change value of the air conditioner operation parameter in a second time period; controlling the running frequency of a compressor of the air conditioner according to the second change value; and acquiring the second variation value in the same manner as the first variation value.
After the compressor operation frequency of the air conditioner is controlled according to the first change value, the air conditioner is set to obtain a second change value of the air conditioner operation parameter in a second time period, and the compressor operation frequency of the air conditioner is controlled according to the second change value, so that the compressor operation frequency can be further adjusted, the energy consumption of the compressor can be further reduced, and the energy-saving effect of the air conditioner is further improved.
In a specific embodiment, after the compressor operation frequency of the air conditioner is controlled according to the first variation value, the second variation value of the air conditioner operation parameter in the second time period is obtained, namely, the indoor environment temperature Δ T1, the outdoor environment temperature Δ T2, the evaporation temperature Δ T3 of the outdoor heat exchanger and the condensation temperature Δ T4 of the indoor heat exchanger are calculated again after the compressor frequency is adjusted according to the first variation value, the minimum temperature variation value at the moment is recorded as the second variation value Δ T6, and then the operation frequency of the compressor is adjusted again according to the second variation value Δ T6.
Further, the controlling the compressor operation frequency of the air conditioner according to the second variation value includes: controlling the running frequency of the compressor of the air conditioner to be reduced under the condition that the second variation value is smaller than or equal to a third threshold value; and/or under the condition that the first change value is larger than a third threshold value and smaller than a fourth threshold value, controlling the running frequency of the compressor of the air conditioner to be unchanged; and/or controlling the running frequency of the compressor of the air conditioner to be increased under the condition that the first change value is greater than or equal to a fourth threshold value; wherein the third threshold is less than the fourth threshold.
If the second variation value Δ T6 is less than or equal to the third threshold, it indicates that the cooling capacity of the air conditioner is still higher than the target cooling capacity range at this time, and therefore the operation frequency of the compressor of the air conditioner needs to be controlled again to be reduced by Δ F, so that the cooling capacity of the air conditioner is reduced to the target cooling capacity range, and unnecessary energy consumption of the air conditioner caused by the excessively high operation frequency of the compressor is avoided; if the second variation value delta T6 is larger than the third threshold and smaller than the fourth threshold, the current refrigerating capacity of the air conditioner is in the target refrigerating capacity range, and therefore the operation frequency of a compressor of the air conditioner is controlled to be unchanged; if the second variation value delta T6 is larger than or equal to the fourth threshold value, it is indicated that the current refrigerating capacity of the air conditioner is lower than the target refrigerating capacity range, so that the operation frequency of the compressor of the air conditioner is controlled to be increased delta F, the refrigerating capacity of the air conditioner is increased to be within the target refrigerating capacity range, and the phenomenon that the refrigerating effect of the air conditioner is reduced due to the fact that the operation frequency of the compressor is excessively reduced, and the comfort of a user is affected is avoided.
In one embodiment, the third threshold value ranges from [ -1,1], and a preferred value of the third threshold value is 1. The range of the fourth threshold value is [1,3], and the preferred value of the third threshold value is 2. When the second change value delta T6 is less than or equal to 1, controlling the running frequency of a compressor of the air conditioner to be reduced by 4Hz; when 1 & ltdelta T6 & lt 3, the running frequency of the compressor of the air conditioner is unchanged; and when the second change value delta T6 is more than or equal to 3, controlling the running frequency of the compressor of the air conditioner to rise by 4Hz.
Further, after the compressor operation frequency of the air conditioner is controlled according to the second variation value, a circulation mode is adopted, the second variation value of the air conditioner operation parameter in a second time period is obtained in a circulation mode, and the compressor operation frequency operation of the air conditioner is controlled according to the second variation value; exiting the loop mode if the second change value is greater than or equal to a fifth threshold.
And when the refrigerating capacity of the air conditioner is too large or too small, circularly executing for multiple times to obtain a second change value of the operating parameter of the air conditioner in a second time period, controlling the operation frequency of the compressor of the air conditioner according to the second change value, and not exiting the circulation mode until the second change value is larger than or equal to a fifth threshold value, namely the refrigerating capacity adjustment of the air conditioner is within a target refrigerating capacity range.
In a particular embodiment, the preferred value of the fifth threshold is 3. And after the running frequency of the compressor of the air conditioner is controlled according to the second change value delta T6, if the refrigerating capacity of the air conditioner is not in the target refrigerating capacity range, the circulation mode needs to be adopted, and the air conditioner is controlled to exit the circulation mode until the second change value delta T6 is larger than or equal to 3.
[ second embodiment ]
Referring to fig. 3, a second embodiment of the present invention provides an air conditioner 200, for example, including: an acquisition module 210 and a control module 220. The obtaining module 210 is configured to obtain a first variation value of an air conditioner operating parameter in a first time period; the control module 220 is used for controlling the running frequency of the compressor of the air conditioner according to the first change value; specifically, the air conditioner operation parameters include at least one of the following or a combination thereof: indoor ambient temperature, outdoor ambient temperature, evaporating temperature of the outdoor heat exchanger, condensing temperature of the indoor heat exchanger.
In a specific embodiment, the obtaining module 210 and the control module 220 cooperate with each other to implement any one of the control methods of the air conditioner provided in the first embodiment of the present invention.
[ third embodiment ]
A third embodiment of the present invention provides an air conditioner, for example, including: a computer-readable storage medium storing a computer program that is read and executed by the packaged IC, and a packaged IC, the air conditioner implementing the control method of the air conditioner according to the first embodiment of the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A method of controlling an air conditioner, comprising:
acquiring a first change value of an air conditioner operation parameter in a first time period;
controlling the running frequency of a compressor of the air conditioner according to the first change value;
wherein the air conditioner operation parameters comprise at least one of the following or a combination thereof: indoor ambient temperature, outdoor ambient temperature, evaporation temperature of the outdoor heat exchanger, and condensation temperature of the indoor heat exchanger;
the acquiring a first change value of an air conditioner operating parameter in a first time period comprises:
acquiring temperature change values of at least two of indoor environment temperature, outdoor environment temperature, evaporation temperature of an outdoor heat exchanger and condensation temperature of an indoor heat exchanger in a first time period;
recording the minimum value of the temperature change values of the at least two in the first time period as the first change value;
the controlling of the compressor operation frequency of the air conditioner according to the first variation value includes:
controlling the running frequency of a compressor of the air conditioner to be reduced under the condition that the first change value is smaller than or equal to a second threshold value; and/or
And controlling the compressor running frequency of the air conditioner to be unchanged under the condition that the first change value is larger than a second threshold value.
2. The method as claimed in claim 1, wherein the obtaining the first variation value of the air conditioner operation parameter in the first time period comprises:
controlling the air conditioner to operate in a cooling mode or a dehumidifying mode;
acquiring a load demand value of the air conditioner;
under the condition that the load demand value is smaller than or equal to a first threshold value, acquiring a first change value of an air conditioner operation parameter in a first time period;
wherein the load demand is a difference of a subtraction of an indoor ambient temperature and a set temperature of the air conditioner.
3. The control method of an air conditioner according to claim 1, wherein after controlling the compressor operation frequency of the air conditioner according to the first variation value, the control method of an air conditioner further comprises:
acquiring a second change value of the air conditioner operation parameter in a second time period;
controlling the running frequency of a compressor of the air conditioner according to the second change value;
and acquiring the second variation value in the same manner as the first variation value.
4. The method of claim 3, wherein the controlling the compressor operation frequency of the air conditioner according to the second variation value comprises:
controlling the running frequency of the compressor of the air conditioner to be reduced under the condition that the second variation value is smaller than or equal to a third threshold value; and/or
Controlling the running frequency of the compressor of the air conditioner to be unchanged under the condition that the first change value is larger than a third threshold value and smaller than a fourth threshold value; and/or
Controlling the running frequency of the compressor of the air conditioner to be increased under the condition that the first change value is larger than or equal to a fourth threshold value;
wherein the third threshold is less than the fourth threshold.
5. The control method of an air conditioner according to claim 3, further comprising:
after the compressor running frequency of the air conditioner is controlled according to the second change value, a circulation mode is adopted, a second change value of the air conditioner running parameter in a second time period is obtained in a circulation mode, and the compressor running frequency operation of the air conditioner is controlled according to the second change value;
exiting the cycling mode if the second variation value is greater than or equal to a fifth threshold.
6. An air conditioner, comprising:
the acquisition module is used for acquiring a first change value of an air conditioner operation parameter in a first time period;
the control module is used for controlling the running frequency of a compressor of the air conditioner according to the first change value;
wherein the air conditioner operation parameters comprise at least one of the following or a combination thereof: indoor ambient temperature, outdoor ambient temperature, evaporation temperature of the outdoor heat exchanger, condensation temperature of the indoor heat exchanger;
the acquiring a first change value of an air conditioner operating parameter in a first time period comprises:
acquiring temperature change values of at least two of indoor environment temperature, outdoor environment temperature, evaporation temperature of an outdoor heat exchanger and condensation temperature of an indoor heat exchanger in a first time period;
recording the minimum value of the temperature change values of the at least two in the first time period as the first change value;
the controlling of the compressor operation frequency of the air conditioner according to the first variation value includes:
controlling the running frequency of a compressor of the air conditioner to be reduced under the condition that the first change value is smaller than or equal to a second threshold value; and/or
And controlling the compressor running frequency of the air conditioner to be unchanged under the condition that the first change value is larger than a second threshold value.
7. An air conditioner, comprising: a computer-readable storage medium storing a computer program which is read by and executed by a packaged IC, and a packaged IC, the air conditioner implementing the control method of the air conditioner according to any one of claims 1 to 5.
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| KR20050034086A (en) * | 2003-10-08 | 2005-04-14 | 위니아만도 주식회사 | Method for calculating operation frequency of inverter air-conditioner compressor |
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| JP2007225217A (en) * | 2006-02-24 | 2007-09-06 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN101603751A (en) * | 2009-07-15 | 2009-12-16 | 北京科技大学 | A kind of frequency conversion energy-saving control method of refrigeration system |
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