CN112628961A - Frequency modulation mode for controlling variable frequency air conditioner by temperature regulator - Google Patents
Frequency modulation mode for controlling variable frequency air conditioner by temperature regulator Download PDFInfo
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- CN112628961A CN112628961A CN202011399888.2A CN202011399888A CN112628961A CN 112628961 A CN112628961 A CN 112628961A CN 202011399888 A CN202011399888 A CN 202011399888A CN 112628961 A CN112628961 A CN 112628961A
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- frequency
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- air conditioner
- heating
- dial switch
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- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000005057 refrigeration Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
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Classifications
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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
- F24F11/67—Switching between heating and cooling modes
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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
-
- 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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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a frequency modulation mode for controlling a variable frequency air conditioner by a temperature regulator, which comprises the following steps: s1 detecting the state of dial switch by air conditioner master control; s2, determining low-frequency operation preset values under refrigeration and heating according to the dial switch; s3, detecting indoor and outdoor ambient temperature in real time by master control; s4, determining a frequency adjusting interval according to the indoor and outdoor ambient temperature values and the low-frequency preset value. The invention provides a frequency modulation mode, which determines the running frequency and solves the problems that a frequency converter controlled by a thermostat cannot obtain set temperature, cannot determine the running frequency or can not perform blind frequency modulation.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a frequency modulation mode for controlling a variable frequency air conditioner by a temperature regulator.
Background
The thermostat uses signal communication (it outputs load start-stop signal according to user's setting, the air conditioner controls the load start-stop according to its start-stop signal), generally, the thermostat has compressor start-stop signal, four-way valve start-stop signal, electric heating start-stop signal, fan start-stop signal (according to different thermostats, there is one-gear or multi-gear wind gear signal).
The temperature regulator is mainly used for a fixed-frequency air conditioner (controlling load start and stop), but the demand on a variable-frequency air conditioner (frequency is adjustable, and is not simple load start and stop control) is increasingly large, and a customer generally has a specified brand and can pre-embed connecting wires for the use of the temperature regulator.
In order to be suitable for the temperature regulator to be connected with the variable frequency air conditioner, a frequency modulation mode that the temperature regulator controls the variable frequency air conditioner needs to be designed, different preset environment temperature values (low-frequency operation values) can be selected by adding a dial switch, the intervals are divided according to the actual indoor environment temperature and the outdoor environment temperature when the unit operates, the frequency is preset according to different working conditions, the unit operates in the set frequency, and the low-frequency operation is kept when the temperature value is reached according to the selected low-frequency indoor environment temperature, and the indoor temperature point is maintained. The variable frequency air conditioning unit is operated, the variable frequency can be connected with the temperature regulator, the advantages of the variable frequency air conditioning unit are optimally exerted, the frequency of the compressor is adjustable, the compressor runs at low frequency after a preset temperature value is reached, the compressor is prevented from being frequently started and stopped, and the energy-saving advantages of the variable frequency air conditioning unit are exerted. The comfort of the user can be improved, the market demand and the use habit of the user can be met, and convenience can be provided for after-sale installation and customer selection.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a frequency modulation mode for controlling a variable frequency air conditioner by a temperature regulator.
The invention provides a frequency modulation mode for controlling a variable frequency air conditioner by a temperature regulator, which comprises the following steps:
s1 detecting the state of dial switch by air conditioner master control;
s2, determining low-frequency operation preset values under refrigeration and heating according to the dial switch;
s3, detecting indoor and outdoor ambient temperature in real time by master control;
s4, determining a frequency adjusting interval according to the indoor and outdoor ambient temperature values and the low-frequency preset value;
s5 the air conditioner controls the compressor speed according to the set frequency.
Preferably, the specific operation steps are as follows:
s1, after the air conditioner is powered on, the gear of the dial switch is detected, the lowest frequency of the air conditioner in the cooling and heating operation of the compressor can be determined according to the dial switch, and the low-frequency operation preset value in the cooling is determined to be T cold pre and the low-frequency operation preset value in the heating operation is determined to be T hot pre according to the selection of the dial switch;
s2, determining a compressor running gear table under refrigeration and heating according to the indoor environment temperature and the outdoor environment temperature after the gear is determined by the dial switch, and adjusting the running frequency of the compressor according to the gear table;
and S3, after the air conditioner is powered on, detecting the control signal of the temperature regulator in real time, and determining the refrigerating and heating requirements of the compressor according to the signal.
Preferably, when the refrigeration requirement is needed, the set frequency of the compressor is determined according to the dial switch, the indoor environment temperature and the outdoor environment temperature, wherein the compressor operation frequency table under refrigeration is determined, and the frequency modulation of the compressor is performed according to the set frequency.
Preferably, when the heating requirement is required, if the electrical heating is required, the electrical heating is directly started, if the unit has no electrical heating load, the compressor is directly determined to heat, and if the compressor is required to heat, the set frequency of the compressor is determined according to the compressor running frequency table under heating determined by the dial switch, the indoor environment temperature and the outdoor environment temperature, and the frequency modulation of the compressor is performed according to the set frequency.
Preferably, the control signal of the thermostat comprises a compressor signal, an electric heating signal, a four-way valve signal and a fan signal.
Preferably, a dial switch is arranged, so that the low-frequency operation preset value can be conveniently determined according to the use habits of users or customers during the installation of the air conditioner and according to a sales place during the factory leaving, the preset value can be adjusted, and the compressor operates at a low frequency after reaching the indoor temperature value by the preset value, so that the compressor is prevented from being frequently started and stopped or always operated at a high frequency.
Preferably, a compressor operation gear table is arranged to adjust the operation frequency of the compressor, and the compressor frequency is calculated without setting the temperature and the ambient temperature.
Preferably, the load signal detection port of the air conditioner is in signal connection with a load signal interface of the temperature regulator.
Preferably, the refrigerating and heating requirements of the compressor are based on market and general use requirements.
Preferably, the variable frequency air conditioner connected with the temperature regulator selects an environment temperature reference value of low-frequency operation under refrigeration and heating in a dial switch mode, divides two-dimensional intervals according to the environment temperature reference value and the external environment temperature, determines operation frequency in different intervals, and performs frequency modulation on the compressor according to the operation frequency.
According to the frequency modulation method for controlling the variable frequency air conditioner by the temperature regulator, the problems that the set temperature cannot be obtained, the running frequency cannot be determined or the frequency modulation cannot be performed blindly when the frequency regulator is controlled by the temperature regulator are solved, the problems that the frequency regulator is connected with the temperature regulator, high frequency runs all the time, energy is not saved, and the comfort level is not enough are solved.
The invention provides a frequency modulation mode, which determines the running frequency and solves the problems that a frequency converter controlled by a thermostat cannot obtain set temperature, cannot determine the running frequency or can not perform blind frequency modulation.
Drawings
FIG. 1 is a flow chart of a frequency modulation mode of a variable frequency air conditioner controlled by a thermostat according to the present invention;
FIG. 2 is a logic block diagram of a frequency modulation mode of a variable frequency air conditioner controlled by a thermostat according to the present invention;
fig. 3 is a connection diagram of an indoor unit master control and a thermostat in a frequency modulation mode in which the thermostat controls a variable frequency air conditioner according to the present invention;
fig. 4 is a logic block diagram of an embodiment of a frequency modulation method for controlling an inverter air conditioner by a thermostat according to 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.
Example one
Referring to fig. 1 to 3, a frequency modulation method for controlling a variable frequency air conditioner by a thermostat includes the following steps:
s1 detecting the state of dial switch by air conditioner master control;
s2, determining low-frequency operation preset values under refrigeration and heating according to the dial switch;
s3, detecting indoor and outdoor ambient temperature in real time by master control;
s4, determining a frequency adjusting interval according to the indoor and outdoor ambient temperature values and the low-frequency preset value;
s5 the air conditioner controls the compressor speed according to the set frequency.
Preferably, the specific operation steps are as follows:
s1, after the air conditioner is powered on, the gear of the dial switch is detected, the lowest frequency of the air conditioner in the cooling and heating operation of the compressor can be determined according to the dial switch, and the low-frequency operation preset value in the cooling is determined to be T cold pre and the low-frequency operation preset value in the heating operation is determined to be T hot pre according to the selection of the dial switch;
s2, determining a compressor running gear table under refrigeration and heating according to the indoor environment temperature and the outdoor environment temperature after the gear is determined by the dial switch, and adjusting the running frequency of the compressor according to the gear table;
and S3, after the air conditioner is powered on, detecting the control signal of the temperature regulator in real time, and determining the refrigerating and heating requirements of the compressor according to the signal.
Preferably, when the refrigeration requirement is needed, the set frequency of the compressor is determined according to the dial switch, the indoor environment temperature and the outdoor environment temperature, wherein the set frequency is determined by the compressor operation frequency table (table one) under refrigeration, and the frequency modulation of the compressor is carried out according to the set frequency.
Preferably, when the heating requirement is needed, if the electrical heating is needed, the electrical heating is directly started, if the unit has no electrical heating load, the compressor is directly determined to heat, and if the compressor is needed to heat, the set frequency of the compressor is determined according to the operation frequency table (table two) of the compressor under heating, which is determined by the dial switch, the indoor environment temperature and the outdoor environment temperature, and the frequency modulation of the compressor is carried out according to the set frequency.
Preferably, the control signal of the thermostat comprises a compressor signal, an electric heating signal, a four-way valve signal and a fan signal.
Preferably, a dial switch is arranged, so that the low-frequency operation preset value can be conveniently determined according to the use habits of users or customers during the installation of the air conditioner and according to a sales place during the factory leaving, the preset value can be adjusted, and the compressor operates at a low frequency after reaching the indoor temperature value by the preset value, so that the compressor is prevented from being frequently started and stopped or always operated at a high frequency.
Preferably, a compressor operation gear table is arranged to adjust the operation frequency of the compressor, and the compressor frequency is calculated without setting the temperature and the ambient temperature.
Preferably, the load signal detection port of the air conditioner is in signal connection with the load signal interface of the temperature regulator.
Preferably, the refrigerating and heating requirements of the compressor are based on market and general use requirements.
Preferably, the variable frequency air conditioner connected with the temperature regulator selects an environment temperature reference value of low-frequency operation under refrigeration and heating in a dial switch mode, divides two-dimensional intervals according to the environment temperature reference value and the external environment temperature, determines operation frequency in different intervals, and performs frequency modulation on the compressor according to the operation frequency.
Meter-refrigeration compressor operation frequency meter
Compressor operation frequency table under second heating
Example two
Referring to fig. 4, a frequency modulation method for controlling a variable frequency air conditioner by a thermostat includes the following steps:
s1, after the air conditioner is powered on, the gear of the dial switch is detected, the lowest frequency of the air conditioner in the cooling and heating operation of the compressor can be determined according to the dial switch, and the low-frequency operation preset value in the cooling is determined to be T cold pre and the low-frequency operation preset value in the heating operation is determined to be T hot pre according to the selection of the dial switch;
s2 real-time detecting the control signal of the temperature regulator, determining the refrigerating and heating demand of the compressor according to the signal (according to the market and general use requirement), when the refrigerating demand is needed, if the current indoor environment temperature is less than T cold forecast, setting the frequency of the compressor to be FC1, otherwise, setting the frequency of the compressor to be FC 2. When the heating requirement is needed, if the current indoor environment temperature is greater than T hot budget, setting the frequency of the compressor to be FH1, otherwise, setting the frequency of the compressor to be FH 2;
s3 adjusts the compressor operating frequency according to the set frequency.
The invention comprises the following steps: after the air conditioner is powered on, detecting the gear of a dial switch, determining the lowest running frequency of a compressor of the air conditioner under refrigeration and heating according to the dial switch, and determining a low-frequency running preset value under refrigeration as T cold pre and a low-frequency running preset value under heating as T hot pre according to the selection of the dial switch; after the gear is determined according to the dial switch, a compressor running gear table under refrigeration and heating is determined according to the indoor environment temperature and the outdoor environment temperature, and the running frequency of the compressor is adjusted according to the gear table; after the air conditioner is powered on, the control signal of the temperature regulator is detected in real time, and the refrigerating and heating requirements of the compressor are determined according to the signal.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A frequency modulation mode of a variable frequency air conditioner controlled by a thermostat is characterized by comprising the following steps:
s1 detecting the state of dial switch by air conditioner master control;
s2, determining low-frequency operation preset values under refrigeration and heating according to the dial switch;
s3, detecting indoor and outdoor ambient temperature in real time by master control;
s4, determining a frequency adjusting interval according to the indoor and outdoor ambient temperature values and the low-frequency preset value;
s5 the air conditioner controls the compressor speed according to the set frequency.
2. The frequency modulation mode of the variable frequency air conditioner controlled by the thermostat according to claim 1 is characterized by comprising the following specific operation steps:
s1, after the air conditioner is powered on, the gear of the dial switch is detected, the lowest frequency of the air conditioner in the cooling and heating operation of the compressor can be determined according to the dial switch, and the low-frequency operation preset value in the cooling is determined to be T cold pre and the low-frequency operation preset value in the heating operation is determined to be T hot pre according to the selection of the dial switch;
s2, determining a compressor running gear table under refrigeration and heating according to the indoor environment temperature and the outdoor environment temperature after the gear is determined by the dial switch, and adjusting the running frequency of the compressor according to the gear table;
and S3, after the air conditioner is powered on, detecting the control signal of the temperature regulator in real time, and determining the refrigerating and heating requirements of the compressor according to the signal.
3. The method of claim 2, wherein when the demand for cooling is required, the set frequency of the compressor is determined according to the operating frequency table of the compressor under cooling determined by the dial switch, the indoor ambient temperature and the outdoor ambient temperature, and the frequency modulation of the compressor is performed according to the set frequency.
4. The method as claimed in claim 2, wherein when the demand for heating is required, if the unit needs to be heated by electric heating, the electric heating is directly turned on, if the unit has no electric heating load, the compressor is directly determined to be heated, if the compressor needs to be heated, the set frequency of the compressor is determined according to the compressor operation frequency table under heating determined by the dial switch, the indoor environment temperature and the outdoor environment temperature, and the frequency modulation of the compressor is performed according to the set frequency.
5. The method for controlling the frequency modulation of a variable frequency air conditioner by the thermostat as claimed in claim 2, wherein the control signal of the thermostat comprises a compressor signal, an electric heating signal, a four-way valve signal and a fan signal.
6. The method of claim 2, wherein a dial switch is provided to facilitate the determination of the default low frequency operation value according to the usage habit of the user or customer when the air conditioner is installed and the market place when the air conditioner leaves the factory, and the default low frequency operation value can be adjusted, such that the compressor operates at a low frequency after reaching the indoor temperature value, thereby avoiding frequent start-up and shut-down of the compressor or always operates at a high frequency.
7. The frequency modulation method of a variable frequency air conditioner controlled by a thermostat as claimed in claim 2, wherein a compressor operation gear table is provided to adjust the compressor operation frequency without calculating the compressor frequency according to the set temperature and the ambient temperature.
8. The frequency modulation method of a variable frequency air conditioner controlled by a thermostat according to claim 1, wherein a load signal detection port of the air conditioner is in signal connection with a load signal interface of the thermostat.
9. The frequency modulation method of the variable frequency air conditioner controlled by the thermostat as claimed in claim 1, wherein the refrigerating and heating requirements of the compressor are based on market and general use requirements.
10. The method as claimed in claim 8, wherein the variable frequency air conditioner connected to the thermostat selects an ambient temperature reference value for low frequency operation under cooling and heating by means of a dial switch, divides the two-dimensional zones according to the ambient temperature reference value and an external ambient temperature, determines an operating frequency in different zones, and modulates the frequency of the compressor according to the operating frequency.
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| CN202011399888.2A CN112628961B (en) | 2020-12-04 | 2020-12-04 | Frequency modulation mode for controlling variable frequency air conditioner by temperature regulator |
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| CN202011399888.2A CN112628961B (en) | 2020-12-04 | 2020-12-04 | Frequency modulation mode for controlling variable frequency air conditioner by temperature regulator |
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Cited By (3)
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| CN113405246A (en) * | 2021-06-10 | 2021-09-17 | 珠海市伟高变频科技有限公司 | Variable frequency air conditioner set temperature adjusting device and adjusting method thereof |
| CN115654646A (en) * | 2022-10-19 | 2023-01-31 | 珠海格力电器股份有限公司 | Control method and control device of air conditioner and air conditioner |
| CN116007152A (en) * | 2022-12-12 | 2023-04-25 | 珠海格力电器股份有限公司 | Air conditioner control method, device, air conditioner equipment and storage medium |
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| CN116007152A (en) * | 2022-12-12 | 2023-04-25 | 珠海格力电器股份有限公司 | Air conditioner control method, device, air conditioner equipment and storage medium |
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