CN111878972A - Control method capable of improving energy efficiency and air conditioner - Google Patents
Control method capable of improving energy efficiency and air conditioner Download PDFInfo
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- CN111878972A CN111878972A CN202010704831.2A CN202010704831A CN111878972A CN 111878972 A CN111878972 A CN 111878972A CN 202010704831 A CN202010704831 A CN 202010704831A CN 111878972 A CN111878972 A CN 111878972A
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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
- F24F11/46—Improving electric energy efficiency or saving
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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
Abstract
The invention provides a control method capable of improving energy efficiency, and relates to an air conditioner, and the method comprises the following steps: s1: respectively and correspondingly matching and setting the highest running frequency of a compressor according to each gear, the ambient temperature and the running mode of the air conditioner; s2: after the air conditioner is started, the control system controls the compressor to operate to the highest operation frequency under the wind speed of the gear; s3: when the ambient temperature approaches the set temperature, the compressor operates at a reduced frequency, and the operating efficiency of the whole machine is gradually improved after the frequency of the compressor is reduced because the area of the indoor and outdoor heat exchangers is not changed. Compared with the prior art, the invention improves the energy efficiency utilization rate and exceeds the requirements of environmental protection and energy efficiency.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method capable of improving energy efficiency and an air conditioner.
Background
The compressor adopted by the inverter air conditioner on the existing market is the inverter compressor, the air conditioning system configuration is to test the system energy efficiency according to a certain frequency, and when the frequency is exceeded, the system energy efficiency is gradually reduced along with the rising of the frequency due to the limitation that the system is constant. In addition, the general test method for testing the energy efficiency in the air conditioner industry is to test and calibrate the energy efficiency through a maximum wind speed-test gear, and because of noise, a user generally uses the air conditioner at a middle wind gear or a low wind gear in use, so that the actual energy efficiency of the air conditioner under high-frequency operation often cannot reach the calibrated value or the nationally recognized energy efficiency value of the air conditioner.
The existing variable frequency air conditioner control mode is as follows: when the air conditioner is started, the rotating speed of the compressor is controlled by the temperature difference between the indoor temperature and the set temperature, the frequency of the compressor usually reaches the highest running frequency at the initial starting stage, and the frequency far exceeds the testing frequency; the defects of high power consumption, large impact on a power grid, low energy efficiency and the like exist when the air conditioner runs at high frequency, the frequency of the air conditioner is gradually reduced after the indoor temperature is reduced, and the air conditioner is close to the calibrated energy efficiency when the air conditioner runs at a strong wind shield.
In actual use, a user often selects high, medium and resisting wind speeds due to noise, but the operation frequency of the compressor is only related to the difference between the indoor temperature and the set temperature and is not related to the wind speed of the indoor unit, so that when the high, medium and low wind speeds are set, the refrigerating capacity is reduced, but the frequency of the compressor still operates at high frequency, the energy efficiency of the air conditioner is lower at this moment, the energy efficiency requirement of air conditioner calibration cannot be met, and the operation energy efficiency is found to be greatly different from the energy efficiency of the air conditioner calibration when the user uses the air conditioner.
Based on this, there is an urgent need for a control method and an air conditioner capable of improving energy efficiency, which can improve the energy efficiency of the air conditioner when a user sets high-speed, medium-speed and low-speed wind speeds, reduce the electric energy of the user, and meet the energy efficiency requirement of environmental protection by accurately controlling the operating frequency of the air conditioner.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide a control method and an air conditioner capable of improving energy efficiency, which can improve the energy efficiency of the air conditioner when a user sets high-speed, medium-speed and low-speed wind speeds, reduce the electric energy of the user, and meet the requirement of energy efficiency for environmental protection by accurately controlling the operating frequency of the air conditioner.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control method capable of improving energy efficiency relates to an air conditioner, and comprises the following steps:
s1: respectively and correspondingly matching and setting the highest running frequency of a compressor according to each gear, the ambient temperature and the running mode of the air conditioner;
s2: after the air conditioner is started, the control system controls the compressor to operate to the highest operation frequency under the wind speed of the gear;
s3: when the ambient temperature approaches the set temperature, the compressor operates at a reduced frequency, and the operating efficiency of the whole machine is gradually improved after the frequency of the compressor is reduced because the area of the indoor and outdoor heat exchangers is not changed.
Further, each gear includes test gear, high-speed gear, intermediate speed gear and low-speed gear, ambient temperature includes high ambient temperature, low ambient temperature, the operational mode includes that the air conditioner heats and air conditioner refrigerates.
Further, when the user is cooling under the test file:
refrigeration at high ambient temperature:
when a user uses the test file to start the air conditioner, the maximum operation frequency of the air conditioner is set to be 58Hz, and the operation air volume of the air conditioner is 814m3H; the running refrigerating capacity is 3504W, the input power is 775W, and the single-point energy efficiency ratio of the air conditioner is 4.52; with the decrease of the indoor temperature, the running air volume of the air conditioner is 814m and is still the test level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from 58Hz until the indoor temperature approaches the set temperature; at the moment, the running frequency of the air conditioner is 23Hz, and the refrigerating capacity of the air conditioner is 1769W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, and the input power of the air conditioner is reduced to 280W; the single-point energy efficiency ratio of the air conditioner is 6.33;
refrigeration at low ambient temperature:
when a user uses the test file to start the air conditioner, the maximum operation frequency of the air conditioner is set to be 58Hz, and the operation air volume of the air conditioner is 814m3H; the operation refrigerating capacity is 3725W, the input power is 669W, and the single-point energy efficiency ratio of the air conditioner is 5.57;
along with the decrease of indoor temperature, the running wind of the air conditioner at the momentThe air quantity is also a test gear and 814m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 58Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 23 Hz; the refrigerating capacity of the air conditioner is 1920W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, and the input power of the air conditioner is 229W; the single-point energy efficiency ratio of the air conditioner is 8.39;
when the user heats up under the test file:
heating at high ambient temperature:
when a user uses the test gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 90Hz, and the operation air volume of the air conditioner is 900m3H; the operation heating capacity is 5158W, the input power is 1394W, and the single-point energy efficiency ratio of the air conditioner is 3.70;
along with the rise of the indoor temperature, the running air volume of the air conditioner is 900m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 90Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 42 Hz; the heating capacity of the air conditioner is 2605W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 461W, and the single-point energy efficiency ratio of the air conditioner is 5.65;
heating at low ambient temperature:
when a user uses the test file to start the air conditioner, the highest operation frequency of the air conditioner is set to be 105 Hz; the operation heating capacity is 4492W, the input power is 1575W, and the single-point energy efficiency ratio of the air conditioner is 2.75;
further, when the user is cooling in the high gear:
refrigeration at high ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 54Hz, and the operation air volume of the air conditioner is 567m3H; the running refrigerating capacity is 3195W, the input power is 689W, and the single-point energy efficiency ratio of the air conditioner is 4.64;
with the temperature in the roomWhen the air volume of the running air of the air conditioner is reduced, the running air volume is still in a high-speed gear and is 567m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 54Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 21Hz, and the refrigerating capacity of the air conditioner is 1564W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 246W, and the single-point energy efficiency ratio of the air conditioner is 6.35;
the refrigeration energy efficiency of the air conditioner at a high ambient temperature and a high speed is 4.64-6.35;
refrigeration at low ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest running frequency of the air conditioner is 54Hz, and the running air volume of the air conditioner is 560m3H; the running refrigerating capacity is 3393W, the input power is 595W, and the single-point energy efficiency ratio of the air conditioner is 5.70;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is 560m at the high wind level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 54Hz until the indoor temperature approaches the set temperature; at this time, the running frequency of the air conditioner is 21Hz, the refrigerating capacity of the air conditioner is 1702W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of a system of the air conditioner is not reduced, the input power is also reduced, the input power of the air conditioner is 200W, and the single-point energy efficiency ratio of the air conditioner is 8.49;
therefore, the refrigeration energy efficiency of the air conditioner at a high speed gear during low-environment refrigeration is 5.7-8.49.
Heating at high ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest running frequency of the air conditioner is set to be 80Hz, and the running air volume of the air conditioner is 632m3H; the operation heating capacity is 4395W, the input power is 1249W, and the single-point energy efficiency ratio of the air conditioner is 3.52;
along with the rise of the indoor temperature, the running air volume of the air conditioner is still in a high wind gear and is 632m3H, the operation frequency of the air conditioner is reduced from the maximum frequency of 80Hz as the difference between the indoor temperature and the set temperature is reducedDecreasing until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 38 Hz; the heating capacity of the air conditioner is 2205W, the heating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 407W, and the single-point energy efficiency ratio of the air conditioner is 5.42;
the heating energy efficiency of the air conditioner at a high ambient temperature and a high speed is 3.52-5.42;
heating at low ambient temperature:
when a user uses a high wind gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 95Hz, and the operation wind volume of the air conditioner is 632m3H; the operation heating quantity is 3875W, the input power is 1416W, and the single-point energy efficiency ratio of the air conditioner is 2.68.
Further, when the user is cooling in the middle gear:
refrigeration at high ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 45Hz, and the operation air quantity of the air conditioner is 495m at the moment3H; the running refrigerating capacity is 2732W, the input power is 561W, and the single-point energy efficiency ratio of the air conditioner is 4.87;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at a middle gear and is 495m at the moment3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 45Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 18 Hz; the refrigerating capacity of the air conditioner is 1337W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 213W, and the single-point energy efficiency ratio of the air conditioner is 6.27;
therefore, the refrigeration energy efficiency of the air conditioner at a high ambient temperature medium gear is 4.87-6.27;
refrigeration at low ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 45Hz, and the operation air quantity of the air conditioner is 495m at the moment3H; the running refrigerating capacity is 2899W, the input power is 482W, and the single-point energy efficiency of the air conditionerThe ratio is 6.02;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at a middle gear and is 495m at the moment3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 45Hz until the indoor temperature approaches the set temperature, and the operation frequency of the air conditioner is 18 Hz; the refrigerating capacity of the air conditioner is 1464W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 172W, and the single-point energy efficiency ratio of the air conditioner is 8.52;
heating at high ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 61Hz, and the operation air volume of the air conditioner is 565m3H; the operation heating capacity is 3508W, the input power is 879W, and the single-point energy efficiency ratio of the air conditioner is 3.99;
along with the rise of the indoor temperature, the running air volume of the air conditioner is also at the middle gear and is 565m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 61Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 30 Hz; the refrigerating capacity of the air conditioner is 1764W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 312W, and the single-point energy efficiency ratio of the air conditioner is 5.65;
heating at low ambient temperature:
when a user uses the medium gear to start the air conditioner, the running frequency of the air conditioner is 80Hz, and the running air volume of the air conditioner is 565m3H; the operation heating capacity is 3388W, the input power is 1137W, and the single-point energy efficiency ratio of the air conditioner is 2.93;
further, when the user is cooling in the low gear:
refrigeration at high ambient temperature:
when a user starts the air conditioner by using a low gear, the highest operation frequency of the air conditioner is set to be 40Hz, and the operation air volume of the air conditioner is 443m3H; 2455W of running refrigerating capacity, 492W of input power and single point of air conditionerThe energy efficiency ratio is 4.99;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at low gear and 443m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 40Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 16 Hz; the refrigerating capacity of the air conditioner is 1148W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 190W, and the single-point energy efficiency ratio of the air conditioner is 6.02;
refrigeration at low ambient temperature:
when a user starts the air conditioner by using a low gear, the highest operation frequency of the air conditioner is set to be 40Hz, and the operation air volume of the air conditioner is 443m3H; the running refrigerating capacity is 2616W, the input power is 423W, and the single-point energy efficiency ratio of the air conditioner is 6.19; along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at low gear and 443m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 40Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 16 Hz; the refrigerating capacity of the air conditioner is 1271W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 152W, and the single-point energy efficiency ratio of the air conditioner is 8.39;
heating at high ambient temperature:
when a user uses a low gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 57Hz, and the operation air volume of the air conditioner is 498m3H; the operation heating capacity is 3215W, the input power is 816W, and the single-point energy efficiency ratio of the air conditioner is 3.94;
along with the rise of the indoor temperature, the running air volume of the air conditioner is still in a low gear and 498m3The operation frequency of the air conditioner is reduced from the highest frequency of 57Hz along with the reduction of the difference value between the indoor temperature and the set temperature until the indoor temperature approaches the set temperature, and the operation frequency of the air conditioner is 29 Hz; the refrigerating capacity of the air conditioner is 1662W; because the heat exchange area of the system of the air conditioner is not reduced, the heat exchange area is reduced along with the reduction of the frequencyThe heating capacity is reduced, the input power of the air conditioner is 303W, and the single-point energy efficiency ratio of the air conditioner is 5.48;
heating at low ambient temperature: when a user uses a low-speed gear to start the air conditioner, the running frequency of the air conditioner is 75Hz, and the running air volume of the air conditioner is 498m 3/h; the operation heating capacity is 3160W, the input power is 1071W, and the single-point energy efficiency ratio of the air conditioner is 2.93;
in order to achieve the above object, the present invention also provides an air conditioner using the control method capable of improving energy efficiency as described above.
Has the advantages that: according to the invention, when the indoor unit is started at each gear, the air conditioner running frequency is set to limit the highest frequency, after the air conditioner is started, the control system controls the compressor to run to the highest limited frequency at the gear wind speed, and when the ambient temperature approaches the set temperature, the compressor runs at a reduced frequency, so that the running efficiency of the whole machine is gradually improved after the compressor reduces the frequency because the area of the indoor and outdoor heat exchangers is not changed; the electric energy of the user is reduced, and the energy efficiency requirement of environmental protection is met.
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 control method capable of improving energy efficiency according to an embodiment of the present invention;
FIG. 2 is a test annual energy efficiency ratio of a control method capable of improving energy efficiency when a test file runs according to an embodiment of the invention;
FIG. 3 is a test annual energy efficiency ratio of a control method capable of improving energy efficiency when operating in a high-speed gear according to an embodiment of the invention;
FIG. 4 is a test annual energy efficiency ratio of a control method capable of improving energy efficiency when operating in a medium gear according to an embodiment of the present invention;
FIG. 5 is a chart illustrating annual energy efficiency ratio testing when the control method capable of improving energy efficiency is operated in a low gear according to the embodiment of the invention;
FIG. 6 is a prior art test annual energy efficiency ratio at test-file run;
FIG. 7 is a prior art year round test energy efficiency ratio at high gear operation;
FIG. 8 is a test year-round energy efficiency ratio for a prior art operation at mid-range;
FIG. 9 is a prior art year round energy efficiency ratio test when operating in low gear.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
A control method capable of improving energy efficiency relates to an air conditioner, and comprises the following steps:
s1: respectively and correspondingly matching and setting the highest running frequency of a compressor according to each gear, the ambient temperature and the running mode of the air conditioner;
s2: after the air conditioner is started, the control system controls the compressor to operate to the highest operation frequency under the wind speed of the gear;
s3: when the ambient temperature approaches the set temperature, the compressor operates at a reduced frequency, and the operating efficiency of the whole machine is gradually improved after the frequency of the compressor is reduced because the area of the indoor and outdoor heat exchangers is not changed.
When the embodiment operates at each gear, the electric energy of a user is reduced, and the energy efficiency requirement of environmental protection is met.
Specifically, each gear includes test gear, high-speed gear, intermediate speed gear and low-speed gear, ambient temperature includes high ambient temperature, low ambient temperature, the operational mode includes that the air conditioner heats and air conditioner refrigerates.
In one specific example, when the user is cooling down under the test profile:
refrigeration at high ambient temperature:
when a user uses the test file to start the air conditioner, the maximum frequency of the air conditioner is set to be 58Hz, and the air conditioner is started at the momentThe running wind volume of 814m3H; the running refrigerating capacity is 3504W, the input power is 775W, and the single-point energy efficiency ratio of the air conditioner is 4.52; with the decrease of the indoor temperature, the running air volume of the air conditioner is 814m and is still the test level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from 58Hz until the indoor temperature approaches the set temperature; at the moment, the running frequency of the air conditioner is 23Hz, and the refrigerating capacity of the air conditioner is 1769W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, and the input power of the air conditioner is reduced to 280W; the single point energy efficiency ratio of the air conditioner is 6.33.
Therefore, the refrigeration energy efficiency of the air conditioner under a high environmental temperature strong level is 4.52-6.33.
Refrigeration at low ambient temperature:
when a user uses the test file to start the air conditioner, the maximum operation frequency of the air conditioner is set to be 58Hz, and the operation air volume of the air conditioner is 814m3H; the operation refrigerating capacity is 3725W, the input power is 669W, and the single-point energy efficiency ratio of the air conditioner is 5.57;
with the decrease of the indoor temperature, the running air volume of the air conditioner is 814m and is still the test level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 58Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 23 Hz; the refrigerating capacity of the air conditioner is 1920W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, and the input power of the air conditioner is 229W; the single-point energy efficiency ratio of the air conditioner is 8.39.
Therefore, the refrigeration energy efficiency of the air conditioner under a strong gear during low-environment refrigeration is 5.57-8.39.
When the user heats up under the test file:
heating at high ambient temperature:
when a user uses the test gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 90Hz, and the operation air volume of the air conditioner is 900m3H; the operation heating capacity is 5158W, the input power is 1394W, and the single-point energy efficiency ratio of the air conditioner is 3.70;
along with the rise of the indoor temperature, the running air volume of the air conditioner is 900m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 90Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 42 Hz; the heating capacity of the air conditioner is 2605W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 461W, and the single-point energy efficiency ratio of the air conditioner is 5.65;
therefore, the heating energy efficiency of the air conditioner under a high environmental temperature test grade is 3.70-5.65.
Heating at low ambient temperature:
when a user uses the test file to start the air conditioner, the highest operation frequency of the air conditioner is set to be 105 Hz; the operation heating capacity is 4492W, the input power is 1575W, and the single-point energy efficiency ratio of the air conditioner is 2.75;
the annual energy efficiency ratio is calculated as APF according to GB21455-2019 test files: 5.28.
see fig. 2 and 6: the energy efficiency ratio of the present example tested the test gear all year round is 5.28, and the energy efficiency ratio of the prior art tested the test gear all year round is 5.13. The energy efficiency ratio of the embodiment is higher than that of the prior art in the same gear, so that the electric energy efficiency utilization ratio of the embodiment is high, and the energy efficiency requirement of environmental protection is met.
In a specific example, when the user is cooling in high gear:
refrigeration at high ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 54Hz, and the operation air volume of the air conditioner is 567m3H; the running refrigerating capacity is 3195W, the input power is 689W, and the single-point energy efficiency ratio of the air conditioner is 4.64;
with the decrease of the indoor temperature, the running air volume of the air conditioner is 567m at the high-speed gear3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 54Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 21Hz, and the refrigerating capacity of the air conditioner is 1564W; air conditionerThe heat exchange area of the system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 246W, and the single-point energy efficiency ratio of the air conditioner is 6.35;
the refrigeration energy efficiency of the air conditioner at a high ambient temperature and a high speed is 4.64-6.35;
refrigeration at low ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 54Hz, and the operation air volume of the air conditioner is 560m3H; the running refrigerating capacity is 3393W, the input power is 595W, and the single-point energy efficiency ratio of the air conditioner is 5.70;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is 560m at the high wind level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 54Hz until the indoor temperature approaches the set temperature; at this time, the running frequency of the air conditioner is 21Hz, the refrigerating capacity of the air conditioner is 1702W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of a system of the air conditioner is not reduced, the input power is also reduced, the input power of the air conditioner is 200W, and the single-point energy efficiency ratio of the air conditioner is 8.49;
therefore, the refrigeration energy efficiency of the air conditioner at a high speed gear during low-environment refrigeration is 5.7-8.49.
Heating at high ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest running frequency of the air conditioner is set to be 80Hz, and the running air volume of the air conditioner is 632m3H; the operation heating capacity is 4395W, the input power is 1249W, and the single-point energy efficiency ratio of the air conditioner is 3.52;
along with the rise of the indoor temperature, the running air volume of the air conditioner is still in a high wind gear and is 632m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 80Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 38 Hz; the heating capacity of the air conditioner is 2205W, the heating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 407W, and the single-point energy efficiency ratio of the air conditionerIs 5.42;
the heating energy efficiency of the air conditioner at a high ambient temperature and a high speed is 3.52-5.42;
heating at low ambient temperature:
when a user uses a high wind gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 95Hz, and the operation wind volume of the air conditioner is 632m3H; the operation heating capacity is 3875W, the input power is 1416W, and the single-point energy efficiency ratio of the air conditioner is 2.68;
according to GB21455-2019, the annual energy efficiency ratio of the high-wind-speed is calculated as APF: 5.12.
see fig. 3 and 7: the energy efficiency ratio tested year round in the high gear of the present embodiment is 5.12, and the energy efficiency ratio tested year round in the high gear of the prior art is 4.92. The energy efficiency ratio of the embodiment is higher than that of the prior art in the same gear, so that the electric energy efficiency utilization ratio of the embodiment is high, and the energy efficiency requirement of environmental protection is met.
In a specific example, when the user is cooling in the middle gear:
refrigeration at high ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 45Hz, and the operation air quantity of the air conditioner is 495m at the moment3H; the running refrigerating capacity is 2732W, the input power is 561W, and the single-point energy efficiency ratio of the air conditioner is 4.87;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at a middle gear and is 495m at the moment3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 45Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 18 Hz; the refrigerating capacity of the air conditioner is 1337W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 213W, and the single-point energy efficiency ratio of the air conditioner is 6.27;
therefore, the refrigeration energy efficiency of the air conditioner at a high ambient temperature medium gear is 4.87-6.27;
refrigeration at low ambient temperature:
when the user uses the middle gear to start the air conditioner, the air conditioner is set to runThe highest frequency is 45Hz, and the running air quantity of the air conditioner is 495m at the moment3H; the running refrigerating capacity is 2899W, the input power is 482W, and the single-point energy efficiency ratio of the air conditioner is 6.02;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at a middle gear and is 495m at the moment3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 45Hz until the indoor temperature approaches the set temperature, and the operation frequency of the air conditioner is 18 Hz; the refrigerating capacity of the air conditioner is 1464W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 172W, and the single-point energy efficiency ratio of the air conditioner is 8.52;
therefore, the refrigeration energy efficiency of the air conditioner in low-environment refrigeration at the middle wind gear is 6.02-8.52
Heating at high ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 61Hz, and the operation air volume of the air conditioner is 565m3H; the operation heating capacity is 3508W, the input power is 879W, and the single-point energy efficiency ratio of the air conditioner is 3.99;
along with the rise of the indoor temperature, the running air volume of the air conditioner is also at the middle gear and is 565m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 61Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 30 Hz; the refrigerating capacity of the air conditioner is 1764W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 312W, and the single-point energy efficiency ratio of the air conditioner is 5.65;
the heating energy efficiency of the air conditioner at a high ambient temperature and a medium gear is 3.99-5.65;
heating at low ambient temperature:
when a user uses the medium gear to start the air conditioner, the running frequency of the air conditioner is 80Hz, and the running air volume of the air conditioner is 565m3H; the operation heating capacity is 3388W, the input power is 1137W, and the single-point energy efficiency ratio of the air conditioner is 2.93;
the annual energy efficiency ratio is calculated as APF according to the GB21455-2019 standard "middle gear": 5.33.
see fig. 4 and 8: the energy efficiency ratio measured all year round in the middle gear of the present embodiment is 5.33, and the energy efficiency ratio measured all year round in the middle gear of the prior art is 4.86. The energy efficiency ratio of the embodiment is higher than that of the prior art in the same gear, so that the electric energy efficiency utilization ratio of the embodiment is high, and the energy efficiency requirement of environmental protection is met.
In a specific example, when the user is cooling in low gear:
refrigeration at high ambient temperature:
when a user starts the air conditioner by using a low gear, the highest operation frequency of the air conditioner is set to be 40Hz, and the operation air volume of the air conditioner is 443m3H; the running refrigerating capacity is 2455W, the input power is 492W, and the single-point energy efficiency ratio of the air conditioner is 4.99;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at low gear and 443m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 40Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 16 Hz; the refrigerating capacity of the air conditioner is 1148W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 190W, and the single-point energy efficiency ratio of the air conditioner is 6.02;
the refrigeration energy efficiency of the air conditioner under the high environmental temperature and low speed gear is 4.99-6.02;
refrigeration at low ambient temperature:
when a user starts the air conditioner by using a low gear, the highest operation frequency of the air conditioner is set to be 40Hz, and the operation air volume of the air conditioner is 443m3H; the running refrigerating capacity is 2616W, the input power is 423W, and the single-point energy efficiency ratio of the air conditioner is 6.19; along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at low gear and 443m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 40Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 16 Hz; air conditioner systemThe cooling capacity is 1271W, the cooling capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 152W, and the single-point energy efficiency ratio of the air conditioner is 8.39;
the refrigeration energy efficiency of the air conditioner at a low gear during low-environment refrigeration is 6.19-8.39;
heating at high ambient temperature:
when a user uses a low gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 57Hz, and the operation air volume of the air conditioner is 498m3H; the operation heating capacity is 3215W, the input power is 816W, and the single-point energy efficiency ratio of the air conditioner is 3.94;
along with the rise of the indoor temperature, the running air volume of the air conditioner is still in a low gear and 498m3The operation frequency of the air conditioner is reduced from the highest frequency of 57Hz along with the reduction of the difference value between the indoor temperature and the set temperature until the indoor temperature approaches the set temperature, and the operation frequency of the air conditioner is 29 Hz; the refrigerating capacity of the air conditioner is 1662W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 303W, and the single-point energy efficiency ratio of the air conditioner is 5.48;
the heating energy efficiency of the air conditioner under the high environmental temperature and low speed gear is 3.94-5.48;
heating at low ambient temperature: when a user uses a low-speed gear to start the air conditioner, the running frequency of the air conditioner is 75Hz, and the running air volume of the air conditioner is 498m 3/h; the operation heating capacity is 3160W, the input power is 1071W, and the single-point energy efficiency ratio of the air conditioner is 2.93;
according to GB21455-2019, the annual energy efficiency ratio of the low-speed gear is calculated as APF: 5.33.
see fig. 5 and 9: the energy efficiency ratio measured year round in the low gear of the present embodiment is 5.33, and the energy efficiency ratio measured year round in the low gear of the prior art is 4.59. The energy efficiency ratio of the embodiment is higher than that of the prior art in the same gear, so that the electric energy efficiency utilization ratio of the embodiment is high, and the energy efficiency requirement of environmental protection is met.
Example 2
In order to achieve the above object, the present embodiment also provides an air conditioner using the control method capable of improving energy efficiency as described above.
Compared with the prior art, the air conditioner and the control method capable of improving energy efficiency have the same advantages, and are not described again here.
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 (7)
1. A control method capable of improving energy efficiency relates to an air conditioner, and is characterized in that the method comprises the following steps:
s1: respectively and correspondingly matching and setting the highest running frequency of a compressor according to each gear, the ambient temperature and the running mode of the air conditioner;
s2: after the air conditioner is started, the control system controls the compressor to operate to the highest operation frequency under the wind speed of the gear;
s3: when the ambient temperature approaches the set temperature, the compressor operates at a reduced frequency, and the operating efficiency of the whole machine is gradually improved after the frequency of the compressor is reduced because the area of the indoor and outdoor heat exchangers is not changed.
2. The energy-efficient control method according to claim 1, wherein the respective gears include a test gear, a high gear, a medium gear, and a low gear, the ambient temperature includes a high ambient temperature and a low ambient temperature, and the operation mode includes air-conditioning heating and air-conditioning cooling.
3. The energy-efficient control method according to claim 2, wherein when the user is cooling in the test gear:
refrigeration at high ambient temperature:
when a user uses the test file to start the air conditioner, the maximum operation frequency of the air conditioner is set to be 58Hz, and the operation air volume of the air conditioner is 814m3H; operation systemThe cold quantity is 3504W, the input power is 775W, and the single-point energy efficiency ratio of the air conditioner is 4.52; with the decrease of the indoor temperature, the running air volume of the air conditioner is 814m and is still the test level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from 58Hz until the indoor temperature approaches the set temperature; at the moment, the running frequency of the air conditioner is 23Hz, and the refrigerating capacity of the air conditioner is 1769W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, and the input power of the air conditioner is reduced to 280W; the single-point energy efficiency ratio of the air conditioner is 6.33;
refrigeration at low ambient temperature:
when a user uses the test file to start the air conditioner, the maximum operation frequency of the air conditioner is set to be 58Hz, and the operation air volume of the air conditioner is 814m3H; the operation refrigerating capacity is 3725W, the input power is 669W, and the single-point energy efficiency ratio of the air conditioner is 5.57;
with the decrease of the indoor temperature, the running air volume of the air conditioner is 814m and is still the test level3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 58Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 23 Hz; the refrigerating capacity of the air conditioner is 1920W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, and the input power of the air conditioner is 229W; the single-point energy efficiency ratio of the air conditioner is 8.39;
when the user heats up under the test file:
heating at high ambient temperature:
when a user uses the test gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 90Hz, and the operation air volume of the air conditioner is 900m3H; the operation heating capacity is 5158W, the input power is 1394W, and the single-point energy efficiency ratio of the air conditioner is 3.70;
along with the rise of the indoor temperature, the running air volume of the air conditioner is 900m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 90Hz until the indoor temperature approaches the set temperature; at this time, the operating frequency of the air conditioner is42 Hz; the heating capacity of the air conditioner is 2605W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 461W, and the single-point energy efficiency ratio of the air conditioner is 5.65;
heating at low ambient temperature:
when a user uses the test file to start the air conditioner, the highest operation frequency of the air conditioner is set to be 105 Hz; the operation heating capacity is 4492W, the input power is 1575W, and the single-point energy efficiency ratio of the air conditioner is 2.75.
4. The energy-efficient control method according to claim 2, wherein when the user cools in the high gear:
refrigeration at high ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 54Hz, and the operation air volume of the air conditioner is 567m3H; the running refrigerating capacity is 3195W, the input power is 689W, and the single-point energy efficiency ratio of the air conditioner is 4.64;
with the decrease of the indoor temperature, the running air volume of the air conditioner is 567m at the high-speed gear3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 54Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 21Hz, and the refrigerating capacity of the air conditioner is 1564W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 246W, and the single-point energy efficiency ratio of the air conditioner is 6.35;
refrigeration at low ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 54Hz, and the operation air volume of the air conditioner is 560m3H; the running refrigerating capacity is 3393W, the input power is 595W, and the single-point energy efficiency ratio of the air conditioner is 5.70;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is 560m at the high wind level3H, the air conditioner operation frequency is also decreased from the maximum frequency of 54Hz as the difference between the indoor temperature and the set temperature is decreased,until the indoor temperature approaches the set temperature; at this time, the running frequency of the air conditioner is 21Hz, the refrigerating capacity of the air conditioner is 1702W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of a system of the air conditioner is not reduced, the input power is also reduced, the input power of the air conditioner is 200W, and the single-point energy efficiency ratio of the air conditioner is 8.49;
heating at high ambient temperature:
when a user uses a high-speed gear to start the air conditioner, the highest running frequency of the air conditioner is set to be 80Hz, and the running air volume of the air conditioner is 632m3H; the operation heating capacity is 4395W, the input power is 1249W, and the single-point energy efficiency ratio of the air conditioner is 3.52;
along with the rise of the indoor temperature, the running air volume of the air conditioner is still in a high wind gear and is 632m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 80Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 38 Hz; the heating capacity of the air conditioner is 2205W, the heating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 407W, and the single-point energy efficiency ratio of the air conditioner is 5.42;
heating at low ambient temperature:
when a user uses a high wind gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 95Hz, and the operation wind volume of the air conditioner is 632m3H; the operation heating quantity is 3875W, the input power is 1416W, and the single-point energy efficiency ratio of the air conditioner is 2.68.
5. The energy-efficient control method according to claim 2, wherein when the user cools in the middle gear:
refrigeration at high ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 45Hz, and the operation air quantity of the air conditioner is 495m at the moment3H; the running refrigerating capacity is 2732W, the input power is 561W, and the single-point energy efficiency ratio of the air conditioner is 4.87;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is also in a middle gear at the momentAnd is 495m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 45Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 18 Hz; the refrigerating capacity of the air conditioner is 1337W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 213W, and the single-point energy efficiency ratio of the air conditioner is 6.27;
refrigeration at low ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 45Hz, and the operation air quantity of the air conditioner is 495m at the moment3H; the running refrigerating capacity is 2899W, the input power is 482W, and the single-point energy efficiency ratio of the air conditioner is 6.02;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at a middle gear and is 495m at the moment3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 45Hz until the indoor temperature approaches the set temperature, and the operation frequency of the air conditioner is 18 Hz; the refrigerating capacity of the air conditioner is 1464W; because the heat exchange area of the air conditioner system is not reduced, the refrigerating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 172W, and the single-point energy efficiency ratio of the air conditioner is 8.52;
heating at high ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 61Hz, and the operation air volume of the air conditioner is 565m3H; the operation heating capacity is 3508W, the input power is 879W, and the single-point energy efficiency ratio of the air conditioner is 3.99;
along with the rise of the indoor temperature, the running air volume of the air conditioner is also at the middle gear and is 565m3The air conditioner operation frequency is reduced along with the reduction of the difference value between the indoor temperature and the set temperature from the highest frequency of 61Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 30 Hz; the refrigerating capacity of the air conditioner is 1764W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 312W, and the single-point energy efficiency of the air conditionerThe ratio was 5.65;
heating at low ambient temperature:
when a user uses a middle gear to start the air conditioner, the highest running frequency of the air conditioner is set to be 80Hz, and the running air quantity of the air conditioner is 565m3H; the operation heating capacity is 3388W, the input power is 1137W, and the single-point energy efficiency ratio of the air conditioner is 2.93.
6. The energy-efficient control method according to claim 2, wherein when the user cools in the low gear:
refrigeration at high ambient temperature:
when a user starts the air conditioner by using a low gear, the highest operation frequency of the air conditioner is set to be 40Hz, and the operation air volume of the air conditioner is 443m3H; the running refrigerating capacity is 2455W, the input power is 492W, and the single-point energy efficiency ratio of the air conditioner is 4.99;
along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at low gear and 443m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 40Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 16 Hz; the refrigerating capacity of the air conditioner is 1148W, the refrigerating capacity is reduced along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reduced, the input power is reduced, the input power of the air conditioner is 190W, and the single-point energy efficiency ratio of the air conditioner is 6.02;
refrigeration at low ambient temperature:
when a user starts the air conditioner by using a low gear, the highest operation frequency of the air conditioner is set to be 40Hz, and the operation air volume of the air conditioner is 443m3H; the running refrigerating capacity is 2616W, the input power is 423W, and the single-point energy efficiency ratio of the air conditioner is 6.19; along with the reduction of the indoor temperature, the running air volume of the air conditioner is still at low gear and 443m3The air conditioner operation frequency is reduced along with the reduction of the difference value of the indoor temperature and the set temperature from the highest frequency of 40Hz until the indoor temperature approaches the set temperature; the running frequency of the air conditioner is 16 Hz; the refrigerating capacity of the air conditioner is 1271W, and the refrigerating capacity is changed along with the reduction of the frequency because the heat exchange area of the system of the air conditioner is not reducedThe input power is also reduced, the input power of the air conditioner is 152W, and the single-point energy efficiency ratio of the air conditioner is 8.39;
heating at high ambient temperature:
when a user uses a low gear to start the air conditioner, the highest operation frequency of the air conditioner is set to be 57Hz, and the operation air volume of the air conditioner is 498m3H; the operation heating capacity is 3215W, the input power is 816W, and the single-point energy efficiency ratio of the air conditioner is 3.94;
along with the rise of the indoor temperature, the running air volume of the air conditioner is still in a low gear and 498m3The operation frequency of the air conditioner is reduced from the highest frequency of 57Hz along with the reduction of the difference value between the indoor temperature and the set temperature until the indoor temperature approaches the set temperature, and the operation frequency of the air conditioner is 29 Hz; the refrigerating capacity of the air conditioner is 1662W; because the heat exchange area of the air conditioner system is not reduced, the heating capacity is reduced along with the reduction of the frequency, the input power is reduced, the input power of the air conditioner is 303W, and the single-point energy efficiency ratio of the air conditioner is 5.48;
heating at low ambient temperature: when a user uses a low-speed gear to start the air conditioner, the running frequency of the air conditioner is 75Hz, and the running air volume of the air conditioner is 498m 3/h; the operation heating capacity is 3160W, the input power is 1071W, and the single-point energy efficiency ratio of the air conditioner is 2.93.
7. An air conditioner characterized by using the control method capable of improving energy efficiency according to any one of claims 1 to 6.
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| CN114294773A (en) * | 2021-12-31 | 2022-04-08 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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| CN111121244A (en) * | 2019-12-30 | 2020-05-08 | Tcl空调器(中山)有限公司 | Control method and device of air conditioner and air conditioner |
| CN111043706A (en) * | 2019-12-31 | 2020-04-21 | 宁波奥克斯电气股份有限公司 | Frequency conversion coefficient controllable control method and device of variable frequency air conditioner and air conditioner |
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| CN113091260A (en) * | 2021-04-07 | 2021-07-09 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner and air conditioner |
| CN114294773A (en) * | 2021-12-31 | 2022-04-08 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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