CN110332664B - Air conditioner control method and air conditioner - Google Patents
Air conditioner control method and air conditioner Download PDFInfo
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- CN110332664B CN110332664B CN201910466990.0A CN201910466990A CN110332664B CN 110332664 B CN110332664 B CN 110332664B CN 201910466990 A CN201910466990 A CN 201910466990A CN 110332664 B CN110332664 B CN 110332664B
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- air conditioner
- indoor fan
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- heating
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
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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)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a control method of an air conditioner and the air conditioner, wherein the control method comprises two stages of 'heating starting cold-proof wind' and 'heating running cold-proof wind', and comprises the following steps: s1, the air conditioner is started in a heating mode, and the air conditioner enters a stage of 'heating, starting and cold-proof air prevention'; s2, when the temperature TE of the evaporator coil or the low-speed running time of the indoor fan meets a certain condition, the air conditioner exits the stage of 'heating starting cold-proof' and enters the stage of 'heating running cold-proof', and the indoor fan runs at a set speed; and S3, after the air conditioner enters a heating operation cold-proof air stage, detecting the operation frequency F of the compressor and the temperature TE of the evaporator coil in real time, and controlling the rotating speed of the indoor fan according to the values of the operation frequency F of the compressor and the temperature TE of the evaporator coil. The control method can realize accurate temperature control while preventing cold air control, and simultaneously solves the problems of frequent shutdown and cold air blowing when the compressor is heated to reach the temperature.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner and the air conditioner.
Background
When the air conditioner is started in a heating mode, because the temperature of the evaporator is not high, air with lower temperature is easy to blow out, and discomfort is brought to users, the air conditioner is designed with a 'heating starting cold-proof air' function, in order to enable customers to feel that the air blown out by the air conditioner is hot air, an outdoor fan and a compressor are started immediately after the air conditioner is started, and therefore the air conditioner can absorb heat from the outdoor to the indoor as soon as possible; and in order to prevent the blown air from being cold air, a cold air prevention stage is provided, the indoor fan is not started in the stage until the temperature of the evaporator coil reaches a certain temperature, and then the indoor fan starts to operate, so that the blown air of the air conditioner is hot air.
Once the heating starting cold-proof air is finished, the indoor fan of the air conditioner can continuously run at the set rotating speed so as to obtain higher heating capacity and energy efficiency ratio. When the indoor temperature reaches the set temperature, the inverter air conditioner reduces the operating frequency of the compressor through frequency control, reduces the heating capacity to maintain the indoor temperature near the set temperature, and avoids frequent shutdown when the indoor temperature reaches the set temperature; and along with the operating frequency of compressor reduces, evaporimeter coil temperature also can reduce, but indoor fan still operates at the setting wind speed, and the air-out temperature at this moment will be lower, makes the user uncomfortable. In order to avoid cold wind blowing, the partial variable frequency air conditioner is added with a function of prohibiting frequency reduction, when the temperature of an evaporator coil is lower than a preset value, the prohibition frequency reduction can cause that the heating quantity is far higher than the heat load, and frequent shutdown at a temperature is caused.
The invention application CN107166625A discloses a whole-course cold-proof control method of an inverter air conditioner, which is characterized in that when the operation stage is carried out and the cold-proof function is effective, the rotating speed of an indoor fan is adjusted according to the temperature of an evaporator coil, but the control method does not consider the operating frequency of a compressor, and the change of the rotating speed of the indoor fan can influence the frequency control of the accurate temperature control of the air conditioner, so that the heating cold-proof control method of the air conditioner is required to be provided, the accurate temperature control can be realized at the same time, and the technical problems of frequent shutdown and cold air blowing of the compressor when the temperature reaches the heating temperature are solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an air conditioner and a control method thereof, which can realize accurate temperature control while preventing cold air control and solve the problems of frequent shutdown and cold air blowing when a compressor heats to reach a high temperature.
The technical scheme of the invention is as follows: a control method of an air conditioner is used for preventing the air conditioner from blowing cold air in a heating mode, comprises two stages of 'heating starting cold air prevention' and 'heating operation cold air prevention', and comprises the following steps: step S1, the air conditioner is started up in a heating mode, and the air conditioner enters a stage of 'heating, starting up and cold wind prevention'; step S2, when the temperature TE of the evaporator coil or the low-speed running time of the indoor fan meets a certain condition, the air conditioner exits the stage of 'heating starting cold-proof' and enters the stage of 'heating running cold-proof', and the indoor fan runs at a set speed; and step S3, after the air conditioner enters a heating operation cold-proof air stage, detecting the operation frequency F of the compressor and the temperature TE of the evaporator coil in real time, and controlling the rotating speed of the indoor fan according to the values of the operation frequency F of the compressor and the temperature TE of the evaporator coil.
Further, the step S1 includes: when the air conditioner is started in a heating mode, the indoor fan is not started temporarily.
Further, the indoor fan starts to operate at a low rotation speed when either of the following two conditions is satisfied:
(a) detecting the temperature TE of the evaporator coil in real time, and when the TE is more than or equal to the first set temperature TE1 of the evaporator coil;
(b) the heating operation time of the compressor of the air conditioner is more than or equal to the preset operation time of the compressor.
Further, once the indoor fan is started, it is no longer stopped due to the temperature drop of the evaporator coil.
Further, the evaporator coil temperature TE or the indoor fan low-speed operation time in the step S2 satisfies any one of the following two conditions:
(a) detecting the temperature TE of the evaporator coil in real time, wherein when the TE is more than or equal to a second set temperature TE2 of the evaporator coil, TE is more than or equal to TE 2;
(b) the low-rotating-speed running time of the indoor fan is greater than or equal to the low-rotating-speed preset running time.
Further, the step S3 includes: when the running frequency F of the compressor is equal to the maximum running frequency F of the current working conditionMAXIn the meantime, the indoor fan is operated at a set rotation speed.
Further, the step S3 includes: when the running frequency F of the compressor is less than the maximum running frequency F of the current working conditionMAXAdjusting the rotating speed of an indoor fan according to the temperature TE of the evaporator coil detected in real time;
when TE is more than or equal to the third set temperature TE3 of the evaporator coil, namely TE is more than or equal to TE3, the rotating speed of the indoor fan rises at a first preset speed until the set rotating speed of the indoor fan is reached;
when the TE is less than the third set temperature TE3 of the evaporator coil and greater than the fourth set temperature TE4 of the evaporator coil, namely TE4 < TE3, the indoor fan maintains the current rotating speed unchanged;
when TE is less than or equal to the fourth set temperature TE4 of the evaporator coil, namely TE is less than or equal to TE4, the rotating speed of the indoor fan is reduced at a second preset speed until the mute wind speed of the indoor fan is reached.
The invention also provides an air conditioner, which comprises a compressor, a processor and a memory, wherein the processor is connected with the compressor and the memory, the memory stores a program, and the program is executed by the processor to execute the steps of the control method.
The invention has the following beneficial effects: the control method provided by the invention comprises two stages of 'heating starting cold air prevention' and 'heating running cold air prevention', so that cold air blowing during starting can be prevented, cold air blowing during the running process of a heating mode can also be prevented, and the comfort of the air conditioner is improved; in the heating mode operation process of the air conditioner, the rotating speed of an indoor fan is adjusted in real time by monitoring the temperature of an evaporator coil and the operation frequency of a compressor in real time, the control of the air outlet temperature of the heating mode is realized on the premise of not influencing the frequency control of accurate temperature control, the accurate temperature control and the heating cold-proof wind are both considered, the problems of frequent shutdown and cold wind blowing of the compressor when the temperature is up to the heating temperature are solved, and the heating comfort is improved.
Drawings
Fig. 1 is a flowchart of a control method of an air conditioner according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The invention provides a control method of an air conditioner, and fig. 1 is a flow chart of a heating and cold-proof control method according to the invention, and as shown in fig. 1, the method comprises two stages of heating starting and cold-proof air and heating running and cold-proof air:
s1, the air conditioner is started in a heating mode, and the air conditioner enters a stage of 'heating, starting and cold-proof air prevention';
s101, when the air conditioner is started in a heating mode, the indoor fan is not started temporarily:
s102, when any one of the following two conditions is met, the indoor fan starts to operate at a low rotating speed:
(a) detecting the temperature TE of the evaporator coil in real time, and when the TE is more than or equal to the first set temperature TE1 of the evaporator coil;
(b) the heating operation time of the compressor of the air conditioner is more than or equal to the preset operation time of the compressor;
in addition, in order to prevent the indoor fan from being frequently started and stopped, once the indoor fan starts to operate, the indoor fan is not stopped because the temperature of the evaporator coil drops;
s2, when any one of the following two conditions is met, the air conditioner exits the stage of 'heating starting and cold air prevention' and enters the stage of 'heating running and cold air prevention', and the indoor fan runs at the set rotating speed:
(a) detecting the temperature TE of the evaporator coil in real time, wherein when the TE is more than or equal to a second set temperature TE2 of the evaporator coil, TE is more than or equal to TE 2;
(b) the low-rotating-speed running time of the indoor fan is greater than or equal to the low-rotating-speed preset running time.
S3, after the air conditioner enters a heating operation cold-proof air stage, detecting the operation frequency F of the compressor and the temperature TE of the evaporator coil in real time, and controlling the rotating speed of the indoor fan according to the following rules;
s301, when the running frequency F of the compressor is equal to the maximum running frequency F of the current working conditionMAXThe indoor fan runs at a set rotating speed;
when the indoor temperature is less than the set temperature, the compressor may be operated at the maximum frequency in order to rapidly reach the temperature, and at this time, the indoor fan is operated at the set rotational speed to obtain the maximum heating amount.
When the indoor temperature reaches the set temperature, the operating frequency of the air conditioner is reduced, the temperature TE of the evaporator coil is reduced, and at the moment, the real-time rotating speed of the indoor fan needs to be adjusted according to the temperature TE of the evaporator coil detected in real time, so that cold air is prevented from blowing people.
S302, when the running frequency F of the compressor is less than the maximum running frequency F of the current working conditionMAXAdjusting the rotating speed of an indoor fan according to the temperature TE of the evaporator coil detected in real time;
when TE is more than or equal to the third set temperature TE3 of the evaporator coil, namely TE is more than or equal to TE3, the rotating speed of the indoor fan rises at a first preset speed until the set rotating speed of the indoor fan is reached;
when the TE is less than the third set temperature TE3 of the evaporator coil and greater than the fourth set temperature TE4 of the evaporator coil, namely TE4 < TE3, the indoor fan maintains the current rotating speed unchanged;
when TE is less than or equal to the fourth set temperature TE4 of the evaporator coil, namely TE is less than or equal to TE4, the rotating speed of the indoor fan is reduced at a second preset speed until the mute wind speed of the indoor fan is reached.
The value range of the first set temperature TE1 is 24-32 ℃, the value range of the second set temperature TE2 is 34-40 ℃, the value range of the third set temperature TE3 is 38-42 ℃, the value range of the fourth set temperature TE4 is 34-38 ℃, the value range of the temperature is determined according to the somatosensory effect of a person 2 meters away from the air outlet of the air conditioner, and the comfort level of the somatosensory effect of the person far away from the air outlet can be ensured according to the value setting.
The preset running time of the compressor is 60 s-150 s, and the preset running time of the low rotating speed is 60 s-120 s.
The value range of the first preset speed is 10 r/min-50 r/min, the value range of the second preset speed is 10 r/min-50 r/min, the preset rotating speed is set to be low, the rotating speed of the indoor fan can be changed stably, and fluctuation caused by rapid change of the rotating speed of the indoor fan is prevented.
The control method comprises two stages of 'heating starting cold air prevention' and 'heating operation cold air prevention', so that the air conditioner can be prevented from blowing cold air when being started, and can also be prevented from blowing cold air in the operation process of a heating mode, and the comfort of the air conditioner is improved; in the heating mode operation process of the air conditioner, the rotating speed of an indoor fan is adjusted in real time by monitoring the temperature of an evaporator coil and the operation frequency of a compressor in real time, the control of the air outlet temperature of the heating mode is realized on the premise of not influencing the frequency control of accurate temperature control, the accurate temperature control and the heating mode are considered for preventing cold air, the problems of frequent shutdown and cold air blowing of the compressor when the temperature is reached during heating are solved, and the heating comfort is improved.
The invention also provides an air conditioner, which comprises a compressor, a processor and a memory, wherein the processor is connected with the compressor and the memory, the memory stores a program, and the program is executed by the processor by the steps of the control method.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A control method of an air conditioner is used for preventing the air conditioner from blowing cold air in a heating mode, and comprises two stages of 'heating starting and cold air prevention' and 'heating running and cold air prevention', and is characterized in that: it comprises the following steps: step S1, the air conditioner is started up in a heating mode, and the air conditioner enters a stage of 'heating, starting up and cold wind prevention'; step S2, when the temperature TE of the evaporator coil or the low-speed running time of the indoor fan meets a certain condition, the air conditioner exits the stage of 'heating starting cold-proof' and enters the stage of 'heating running cold-proof', and the indoor fan runs at a set speed; step S3, after the air conditioner enters a stage of heating operation cold air prevention, detecting the operation frequency F of the compressor and the temperature TE of the evaporator coil in real time, and controlling the rotating speed of the indoor fan according to the values of the operation frequency F of the compressor and the temperature TE of the evaporator coil; the step S3 includes:
when the running frequency F of the compressor is equal to the maximum running frequency F of the current working conditionMAXWhen the indoor fan runs at a set rotating speed;
when the running frequency F of the compressor is less than the maximum running frequency F of the current working conditionMAXIn time, the indoor fan is regulated according to the temperature TE of the evaporator coil detected in real timeA rotational speed;
when TE is greater than or equal to a third set temperature TE3 of the evaporator coil, namely TE is greater than or equal to TE3, the rotating speed of the indoor fan rises at a first preset speed until the set rotating speed of the indoor fan is reached; when the TE is less than the third set temperature TE3 of the evaporator coil and greater than the fourth set temperature TE4 of the evaporator coil, namely TE4 < TE3, the indoor fan maintains the current rotating speed unchanged; when TE is less than or equal to the fourth set temperature TE4 of the evaporator coil, namely TE is less than or equal to TE4, the rotating speed of the indoor fan is reduced at a second preset speed until the mute wind speed of the indoor fan is reached.
2. The control method of an air conditioner according to claim 1, wherein: the step S1 includes: when the air conditioner is started in a heating mode, the indoor fan is not started temporarily.
3. The control method of an air conditioner according to claim 2, wherein: the indoor fan starts to operate at a low rotation speed when either of the following two conditions is satisfied:
(a) detecting the temperature TE of the evaporator coil in real time, and when the TE is more than or equal to the first set temperature TE1 of the evaporator coil;
(b) the heating operation time of the compressor of the air conditioner is more than or equal to the preset operation time of the compressor.
4. A control method of an air conditioner according to claim 3, wherein: once the indoor fan begins to operate, it is no longer stopped because the evaporator coil temperature drops.
5. The control method of an air conditioner according to claim 1, wherein: the evaporator coil temperature TE or the indoor fan low-speed operation time in the step S2 satisfies any one of the following two conditions:
(a) detecting the temperature TE of the evaporator coil in real time, wherein when the TE is more than or equal to a second set temperature TE2 of the evaporator coil, TE is more than or equal to TE 2;
(b) the low-rotating-speed running time of the indoor fan is greater than or equal to the low-rotating-speed preset running time.
6. An air conditioner, characterized in that: comprising a compressor, a processor and a memory, said processor being connected to said compressor and said memory, said memory storing a program, said program being executable by said processor to implement the steps of the control method according to any of the claims 1-5.
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| CN201910466990.0A CN110332664B (en) | 2019-05-31 | 2019-05-31 | Air conditioner control method and air conditioner |
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| CN110762737B (en) * | 2019-11-06 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Cold air prevention frequency control method and device for air conditioner and air conditioner |
| CN111023417A (en) * | 2019-12-26 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Air conditioner cold air prevention control method and device, air conditioner and storage medium |
| CN111059713A (en) * | 2019-12-31 | 2020-04-24 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN111043708A (en) * | 2019-12-31 | 2020-04-21 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
| CN111156647B (en) * | 2019-12-31 | 2021-06-18 | 珠海格力电器股份有限公司 | Air conditioner cold air prevention control method, computer readable storage medium and air conditioner |
| CN111140997B (en) * | 2019-12-31 | 2021-08-24 | Tcl空调器(中山)有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
| CN111397123B (en) * | 2020-03-24 | 2021-11-16 | 四川长虹空调有限公司 | Control method for heating air-out temperature of household air conditioner |
| CN112097377A (en) * | 2020-07-07 | 2020-12-18 | 珠海格力电器股份有限公司 | Air conditioner, control method, computer equipment and readable storage medium |
| CN111964237B (en) * | 2020-08-24 | 2022-02-11 | 广东美的暖通设备有限公司 | Controller and air conditioner |
| CN114251803B (en) * | 2020-09-22 | 2023-03-31 | 广东美的精密模具科技有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
| CN112361547B (en) * | 2020-10-22 | 2022-02-01 | 珠海格力电器股份有限公司 | Air conditioner operation control method and device and air conditioner |
| CN112413761A (en) * | 2020-11-23 | 2021-02-26 | 杭州森乐实业有限公司 | Ice cold storage air conditioning equipment and cold storage method thereof |
| CN112984703B (en) * | 2021-03-26 | 2022-07-29 | 广东Tcl智能暖通设备有限公司 | Air conditioning unit starting control method, device and equipment and storage medium |
| CN113847717B (en) * | 2021-08-23 | 2023-03-17 | 青岛海尔空调电子有限公司 | Air conditioner operation control method and device and air conditioner |
| CN113959074B (en) * | 2021-10-12 | 2022-10-25 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| CN114440398B (en) * | 2022-02-11 | 2023-03-24 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| CN115164388B (en) * | 2022-08-09 | 2024-02-02 | 宁波奥克斯电气股份有限公司 | Heating cold air prevention control method for air conditioner |
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