CN113357753B - Heating control method of variable frequency air conditioner and variable frequency air conditioner - Google Patents
Heating control method of variable frequency air conditioner and variable frequency air conditioner Download PDFInfo
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- CN113357753B CN113357753B CN202010145466.6A CN202010145466A CN113357753B CN 113357753 B CN113357753 B CN 113357753B CN 202010145466 A CN202010145466 A CN 202010145466A CN 113357753 B CN113357753 B CN 113357753B
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- air conditioner
- indoor unit
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- variable frequency
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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
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention belongs to the technical field of air conditioners and aims to solve the problem that when an existing variable frequency air conditioner can normally heat, energy conservation is not facilitated due to the fact that control logics of frequency rising heating by a compressor and heating by an electric heating device are independent. Therefore, the invention provides a heating control method of a variable frequency air conditioner, the variable frequency air conditioner comprises an indoor unit, a compressor and an electric heating device, the electric heating device is arranged on the indoor unit and can heat the outlet air of the indoor unit, and the heating control method comprises the following steps: acquiring the frequency boosting power of the variable frequency air conditioner; if the frequency rising power of the variable frequency air conditioner is greater than or equal to the preset power, keeping the current running frequency of the compressor and starting the electric heating device; and if the frequency increasing power of the variable frequency air conditioner is less than the preset power, continuously increasing the running frequency of the compressor. When the variable frequency air conditioner can normally heat, the variable frequency air conditioner can heat in a power-saving mode, so that energy conservation and environmental protection are realized, and the user experience is improved.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides a heating control method of a variable frequency air conditioner and the variable frequency air conditioner.
Background
The air conditioner can realize the regulation to indoor ambient temperature, and inverter air conditioner belongs to one kind of air conditioner, generally can set up electric heater unit on the inverter air conditioner of current, and electric heater unit can open and assist and heat or improve the efficiency of heating when inverter air conditioner heats not enough or the efficiency of heating is low. However, when the inverter air conditioner can normally heat, since control logics for heating by using the compressor and heating by using the electric heating device are independent of each other, a situation of consuming too much electric energy may occur, which is not favorable for energy saving.
Therefore, there is a need in the art for a new heating control method of an inverter air conditioner and a corresponding inverter air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the control logics of the conventional inverter air conditioner for heating by using the compressor for raising the frequency and the electric heating device for heating are independent from each other when the conventional inverter air conditioner can normally heat, which is not beneficial to energy saving, the invention provides a heating control method of the inverter air conditioner, wherein the inverter air conditioner comprises an indoor unit, a compressor and an electric heating device, the electric heating device is arranged on the indoor unit and can heat the air outlet of the indoor unit, and the heating control method comprises the following steps: acquiring the frequency boosting power of the variable frequency air conditioner; if the frequency rising power of the variable frequency air conditioner is greater than or equal to the preset power, keeping the current running frequency of the compressor and starting the electric heating device; and if the frequency boosting power of the variable frequency air conditioner is less than the preset power, continuously increasing the running frequency of the compressor.
In a preferred embodiment of the heating control method, before the step of "obtaining the up-conversion power of the inverter air conditioner", the heating control method further includes: acquiring the temperature of a coil pipe of an indoor unit; the step of obtaining the frequency increasing power of the variable frequency air conditioner specifically comprises the following steps: judging whether the temperature of a coil pipe of the indoor unit reaches a first target temperature or not; and if the temperature of the coil pipe of the indoor unit does not reach the first target temperature, acquiring the frequency boosting power of the variable frequency air conditioner.
In a preferred embodiment of the above heating control method, before the step of "obtaining a coil temperature of the indoor unit", the heating control method includes: and enabling the variable frequency air conditioner to perform heating operation for a first preset time.
In a preferred technical solution of the heating control method, the frequency boosting power of the variable frequency air conditioner is determined according to the coil temperature of the indoor unit and the first target temperature.
In a preferred technical scheme of the heating control method, the frequency boosting power of the variable frequency air conditioner is determined according to a difference value between the first target temperature and the coil temperature of the indoor unit.
In a preferred embodiment of the above heating control method, the heating control method further includes: after the electric heating device continuously operates for a second preset time, acquiring the temperature of a coil pipe of the indoor unit; judging whether the temperature of a coil pipe of the indoor unit reaches a second target temperature or not; and selectively increasing the running frequency of the compressor according to the judgment result.
In a preferred embodiment of the heating control method, the step of "selectively increasing the operating frequency of the compressor according to the determination result" includes: and if the temperature of the coil pipe of the indoor unit does not reach the second target temperature, increasing the running frequency of the compressor.
In a preferred embodiment of the heating control method, the step of "selectively increasing the operating frequency of the compressor according to the determination result" further includes: and if the coil temperature of the indoor unit reaches the second target temperature, maintaining the current running frequency of the compressor.
In a preferred technical scheme of the heating control method, the preset power is a rated heating power of the electric heating device.
In another aspect, the present invention also provides an inverter air conditioner including a controller configured to be able to perform the heating control method described above.
The technical scheme includes that the frequency boosting power of the inverter air conditioner is obtained, if the frequency boosting power is larger than or equal to the preset power, the inverter air conditioner consumes more power when the compressor is used for boosting for heating, at the moment, the electric heating device is preferentially adopted for heating, the compressor keeps the current running frequency, if the frequency boosting power is smaller than the preset power, the inverter air conditioner saves more power when the compressor is used for boosting for heating, at the moment, the compressor is preferentially used for boosting for heating, the electric heating device is kept closed, and through the arrangement, when the inverter air conditioner can normally heat, the inverter air conditioner can heat in a more power-saving mode, so that energy conservation and environmental protection are achieved, and user experience is improved.
Further, after the electric heating device continuously operates for a second preset time, acquiring the temperature of a coil pipe of the indoor unit; judging whether the temperature of a coil pipe of the indoor unit reaches a second target temperature or not; if the temperature of the coil pipe of the indoor unit does not reach the second target temperature, the running frequency of the compressor is increased; and if the coil temperature of the indoor unit reaches the second target temperature, maintaining the current running frequency of the compressor. That is, after the electric heating device continuously operates for the second preset time, the heating of the inverter air conditioner still does not meet the requirement, that is, the coil temperature of the indoor unit does not reach the second target temperature, then the frequency of the compressor of the inverter air conditioner continues to be increased to meet the heating requirement of the user, if the heating of the inverter air conditioner meets the requirement, that is, the coil temperature of the indoor unit reaches the second target temperature, then the frequency of the compressor of the inverter air conditioner does not need to be increased, that is, the inverter air conditioner can meet the heating requirement of the user and save electric energy, and further improve the user experience.
Drawings
Fig. 1 is a flowchart of a heating control method embodiment of an inverter air conditioner according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that the terms "first", "second" and "third" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides a heating control method of an inverter air conditioner and the inverter air conditioner, aiming at heating in a relatively power-saving mode when the inverter air conditioner can normally heat, so that energy conservation and environmental protection are realized, and user experience is improved.
Specifically, the inverter air conditioner of the present invention includes a controller, an indoor unit, a compressor, and an electric heating device, and of course, the inverter air conditioner further includes other components such as an outdoor unit and a throttling element, which are not listed here. The electric heating device is arranged on the indoor unit and can heat the air outlet of the indoor unit, wherein the electric heating device can be an electric heating wire or an electric heating pipe and the like, and a person skilled in the art can flexibly set the specific structure of the electric heating device in practical application. The controller is configured to be able to execute the heating control method of the present invention. The heating control method of the invention comprises the following steps: acquiring the frequency boosting power of the variable frequency air conditioner; if the frequency rising power of the variable frequency air conditioner is greater than or equal to the preset power, keeping the current running frequency of the compressor and starting the electric heating device; and if the frequency boosting power of the variable frequency air conditioner is less than the preset power, continuously increasing the running frequency of the compressor. The preset power is preferably a rated power of the electric heating device, of course, a corrected value obtained by multiplying, adding or subtracting the rated power of the electric heating device and the correction coefficient may also be used, and of course, the preset power may also be a power value set by a user or before the frequency conversion air conditioner leaves a factory, and a person skilled in the art may flexibly set the preset power in practical application. When the frequency boosting power of the variable frequency air conditioner is greater than or equal to the preset power, the fact that the current compressor frequency boosting mode consumes electric energy for heating is not good when the electric heating device is started, the current operation frequency of the compressor is kept at the moment, the electric heating device is started, the air outlet of the indoor unit is heated through the electric heating device, and the heating effect is improved. When the frequency boosting power of the inverter air conditioner is smaller than the preset power, the heating in the frequency boosting mode of the compressor is more energy-saving than the heating in the mode of starting the electric heating device, and at the moment, the compressor is still used for heating in the frequency boosting mode, namely, the running frequency of the compressor is continuously improved, and the heating effect is improved.
Preferably, before the step of "obtaining the boost power of the inverter air conditioner", the heating control method further includes: acquiring the temperature of a coil pipe of an indoor unit; the step of obtaining the frequency increasing power of the variable frequency air conditioner specifically comprises the following steps: judging whether the temperature of a coil pipe of the indoor unit reaches a first target temperature or not; and if the temperature of the coil pipe of the indoor unit does not reach the first target temperature, acquiring the frequency boosting power of the variable frequency air conditioner. That is to say, whether the heating effect of the current variable frequency air conditioner meets the requirement is determined by acquiring the coil temperature of the indoor unit and then judging whether the coil temperature of the indoor unit reaches the first target temperature, if so, the boost power of the variable frequency air conditioner does not need to be acquired, and if not, the boost power of the variable frequency air conditioner needs to be acquired. The first target temperature may be a temperature set by a user, or a temperature called by the system according to a user requirement. More preferably, before the step of "acquiring the coil temperature of the indoor unit", the heating control method of the present invention includes: and enabling the variable frequency air conditioner to perform heating operation for a first preset time. That is to say, before the coil pipe temperature of the indoor set is detected, firstly, the variable frequency air conditioner is enabled to heat and operate for a period of time, and then the coil pipe temperature of the indoor set is detected, so that when the variable frequency air conditioner operates stably, detection and control operation are carried out, and stable operation of the air conditioner is facilitated. The coil temperature of the indoor unit can be detected by a temperature sensor. Besides, the skilled person can flexibly set the first target temperature and the first preset time in practical applications, and such adjustment and change of specific values of the first target temperature and the first preset time do not constitute a limitation to the present invention, and should be limited within the protection scope of the present invention.
Preferably, the frequency boosting power of the variable frequency air conditioner is determined according to the coil temperature of the indoor unit and the first target temperature. For example, the difference between the first target temperature and the coil temperature of the indoor unit may be determined, for example, the first target temperature is T, the coil temperature of the indoor unit is TM, and the up-conversion power P of the variable frequency air conditioner may be calculated by a formula P = K × T-TM, where K is a correction coefficient. Of course, as an alternative, the up-conversion power of the inverter air conditioner may also be determined by the operation current of the compressor, and a person skilled in the art may flexibly set the determination manner of the up-conversion power of the inverter air conditioner in practical application.
Preferably, the heating control method of the present invention further includes: after the electric heating device continuously operates for a second preset time, acquiring the temperature of a coil pipe of the indoor unit; judging whether the temperature of a coil pipe of the indoor unit reaches a second target temperature or not; and selectively increasing the running frequency of the compressor according to the judgment result. In addition, the skilled person can flexibly set the second target temperature and the second preset time in practical application, and such adjustment and change of the specific values of the second target temperature and the second preset time do not limit the present invention, and should be limited within the protection scope of the present invention. The second target temperature may be equal to or greater than the first target temperature. Specifically, the step of "selectively increasing the operating frequency of the compressor according to the judgment result" includes: if the temperature of the coil pipe of the indoor unit does not reach the second target temperature, the running frequency of the compressor is increased; and if the coil temperature of the indoor unit reaches the second target temperature, maintaining the current running frequency of the compressor. That is, after the electric heating device is turned on and operated for the second preset time, if the coil temperature of the indoor unit still does not meet the requirement, that is, the second target temperature is not reached, the heating effect is further improved by continuously increasing the current operating frequency of the compressor, and if the coil temperature of the indoor unit meets the requirement, that is, the second target temperature is reached, the operating frequency of the compressor does not need to be increased, and the current operating frequency is maintained. In the foregoing, when the coil temperature of the indoor unit reaches the second target temperature, the coil temperature of the indoor unit may be greater than or equal to the second target temperature, and when the coil temperature of the indoor unit does not reach the second target temperature, the coil temperature of the indoor unit may be less than the second target temperature.
The solution according to the invention is explained below with reference to a further preferred embodiment.
As shown in fig. 1, the heating control method of the inverter air conditioner of the present invention includes:
s1: enabling the air conditioner to run for time t1;
s2: acquiring the coil temperature TM of the indoor unit (in the embodiment, the TM is not up to the target temperature T by default);
s3: calculating a difference value delta T between the target temperature T and the coil temperature TM of the indoor unit;
s4: calculating the raising frequency power P of the air conditioner by using a formula P = K Δ T;
s5: judging whether the raising frequency power P of the air conditioner is greater than or equal to a preset power P1;
s61: if so, keeping the current running frequency of the compressor and starting the electric heating device;
s62: if not, the running frequency of the compressor is increased;
s7: after the electric heating device continuously operates for a time T2, judging whether the coil temperature TM of the indoor unit reaches a target temperature T;
s81: if so, keeping the current running frequency of the compressor;
s82: if not, the running frequency of the compressor is increased.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (7)
1. A heating control method of a variable frequency air conditioner is characterized in that the variable frequency air conditioner comprises an indoor unit, a compressor and an electric heating device, the electric heating device is arranged on the indoor unit and can heat the outlet air of the indoor unit,
the heating control method comprises the following steps:
acquiring the temperature of a coil of the indoor unit;
acquiring the frequency boosting power of the variable frequency air conditioner;
the step of obtaining the frequency-increasing power of the variable frequency air conditioner specifically comprises the following steps:
judging whether the temperature of a coil pipe of the indoor unit reaches a first target temperature or not;
if the temperature of the coil pipe of the indoor unit does not reach the first target temperature, acquiring the frequency boosting power of the variable frequency air conditioner;
if the frequency rising power of the variable frequency air conditioner is greater than or equal to the preset power, maintaining the current running frequency of the compressor and starting the electric heating device;
if the frequency rising power of the variable frequency air conditioner is smaller than the preset power, continuously increasing the running frequency of the compressor;
the frequency boosting power of the variable frequency air conditioner is determined according to the coil temperature of the indoor unit and the first target temperature;
the preset power is the rated heating power of the electric heating device.
2. The heating control method according to claim 1, wherein before the step of "acquiring the coil temperature of the indoor unit", the heating control method includes:
and enabling the variable frequency air conditioner to operate for heating for a first preset time.
3. The heating control method according to claim 1, wherein the boost power of the inverter air conditioner is determined according to a difference between the first target temperature and a coil temperature of the indoor unit.
4. The heating control method according to claim 1, characterized by further comprising:
after the electric heating device continuously operates for a second preset time, acquiring the temperature of a coil pipe of the indoor unit;
judging whether the temperature of a coil pipe of the indoor unit reaches a second target temperature or not;
and selectively increasing the running frequency of the compressor according to the judgment result.
5. The heating control method according to claim 4, wherein the step of selectively increasing the operating frequency of the compressor according to the determination result includes:
and if the temperature of the coil pipe of the indoor unit does not reach the second target temperature, increasing the running frequency of the compressor.
6. The heating control method according to claim 5, wherein the step of "selectively increasing the operating frequency of the compressor according to the determination result" further includes:
and if the temperature of the coil pipe of the indoor unit reaches the second target temperature, maintaining the current running frequency of the compressor.
7. An inverter air conditioner, characterized in that the inverter air conditioner comprises a controller configured to be capable of executing the heating control method of any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145466.6A CN113357753B (en) | 2020-03-03 | 2020-03-03 | Heating control method of variable frequency air conditioner and variable frequency air conditioner |
| PCT/CN2021/078617 WO2021175202A1 (en) | 2020-03-03 | 2021-03-02 | Heating control method for variable-frequency air conditioner, and variable-frequency air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010145466.6A CN113357753B (en) | 2020-03-03 | 2020-03-03 | Heating control method of variable frequency air conditioner and variable frequency air conditioner |
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| CN113357753A CN113357753A (en) | 2021-09-07 |
| CN113357753B true CN113357753B (en) | 2022-11-18 |
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| CN202010145466.6A Active CN113357753B (en) | 2020-03-03 | 2020-03-03 | Heating control method of variable frequency air conditioner and variable frequency air conditioner |
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| WO (1) | WO2021175202A1 (en) |
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| CN114704933B (en) * | 2022-02-18 | 2023-12-19 | 青岛海尔空调器有限总公司 | Method and device for controlling direct-current air conditioner and air conditioner |
| CN115638479A (en) * | 2022-09-07 | 2023-01-24 | 宁波奥克斯电气股份有限公司 | Electric heating auxiliary temperature control method, air conditioner control device and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103940048A (en) * | 2014-05-12 | 2014-07-23 | 珠海格力电器股份有限公司 | Air conditioner electric heating control method and system |
| CN105020855A (en) * | 2015-07-24 | 2015-11-04 | 广东美的制冷设备有限公司 | Variable frequency air conditioner control method and system |
| CN106352632B (en) * | 2016-08-25 | 2020-04-03 | 芜湖美智空调设备有限公司 | Air conditioning system and heating control method thereof |
| CN108278740B (en) * | 2017-01-04 | 2020-12-01 | 奥克斯空调股份有限公司 | Control method and device for auxiliary electric heating of variable frequency air conditioner |
| CN107101329B (en) * | 2017-04-25 | 2020-03-31 | 青岛海尔空调器有限总公司 | Air conditioner heating operation control method and control device |
| CN108562020B (en) * | 2018-04-23 | 2021-08-27 | 广东美的暖通设备有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN110440395B (en) * | 2019-08-12 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Control method and system for energy-saving operation of air conditioner and air conditioner |
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| WO2021175202A1 (en) | 2021-09-10 |
| CN113357753A (en) | 2021-09-07 |
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