CN111397123B - Control method for heating air-out temperature of household air conditioner - Google Patents

Control method for heating air-out temperature of household air conditioner Download PDF

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Publication number
CN111397123B
CN111397123B CN202010212903.1A CN202010212903A CN111397123B CN 111397123 B CN111397123 B CN 111397123B CN 202010212903 A CN202010212903 A CN 202010212903A CN 111397123 B CN111397123 B CN 111397123B
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temperature
rotating speed
indoor
direct current
inner disc
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CN111397123A (en
Inventor
杨斌
张少龙
邓蓉
郭继平
白兴辉
廖秀兰
王传奇
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Sichuan Changhong Air Conditioner Co Ltd
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Sichuan Changhong Air Conditioner Co Ltd
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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
    • 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
    • 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
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a control method for heating air-out temperature of a household air conditioner, and belongs to the field of heating air-out control of the household air conditioner. In order to solve the problem that the air outlet temperature and the air outlet speed of the common household air conditioner greatly fluctuate under various conditions, the invention comprises the following steps: when the household air conditioner starts to heat, the temperature of the indoor inner disc is monitored; the temperature of the inner disc reaches the set temperature T1Indoor DC motor with N1Starting to operate at a rotating speed; monitoring the change rate of the temperature of the inner disc, the current temperature of the inner disc and the current rotating speed parameter of the indoor direct current motor; when the current inner disc temperature is less than or equal to T1In time, the indoor DC motor is driven by N1The rotating speed is constant, when the current inner disk temperature is more than T1Calculating a target rotating speed according to the monitored parameters, and controlling the indoor direct current motor to constantly operate according to the target rotating speed; when N is present2When the rotating speed of the indoor direct current motor is less than or equal to the rotating speed of the indoor direct current motor, the indoor direct current motor is driven by N2And performing constant operation, otherwise, performing constant rotation speed operation on the indoor direct current motor at the target rotation speed.

Description

Control method for heating air-out temperature of household air conditioner
Technical Field
The invention relates to a control technology of heating air-out temperature of a household air conditioner, in particular to a control method of heating air-out temperature of the household air conditioner.
Background
An air conditioner is a device that provides treated air directly to an enclosed space, room or area. The household air conditioner is mainly applied to human living places.
In order to prevent the air conditioner from blowing out cold air during heating, the existing air conditioner has a cold air prevention function, and the indoor direct current motor can select an ascending gear or a descending gear along with the change of the temperature of the indoor coil pipe, so that cold air cannot be blown out. In the initial starting stage of a common air conditioner, the temperature of an inner disc gradually rises, and after reaching a certain temperature (such as 38 ℃), an indoor direct current motor starts to run with a low windshield, so that the temperature of the inner disc is greatly reduced due to sudden increase of air volume and air speed, and the temperature of an air outlet of the air conditioner is increased firstly and then reduced; along with the improvement of the heating capacity of the air conditioner, the air outlet temperature and the inner disc can be raised to higher temperature, at the moment, the indoor direct current motor is converted into a middle windshield, and the air outlet temperature of the air conditioner is also greatly reduced along with the great reduction of the air outlet temperature of the air conditioner due to the rapid increase of the air volume and the air speed; similarly, there are also large fluctuations in the outlet air temperature and outlet air speed at high wind speeds. The situation is worsened when the room temperature is lower or the room area is far larger than the use area of the air conditioner, and the like, and even the situation that the indoor direct current motor is repeatedly switched between a high wind gear and a middle wind gear always occurs.
The large fluctuation of the air outlet temperature and the air outlet speed (which is in direct proportion to the rotating speed of the indoor direct current motor) described above can bring the feelings of sudden cold and sudden heat of air blowing and sudden large and small wind for users, the subjective feelings of the users are very poor, and meanwhile, the pressure fluctuation of an air conditioning system is large, and the reliability is influenced.
Disclosure of Invention
The invention aims to provide a control method for the heating air-out temperature of a household air conditioner, which can solve the problem that the air-out temperature and the air-out speed of a common household air conditioner greatly fluctuate under various conditions.
The invention solves the technical problem, and adopts the technical scheme that: the control method of the heating air-out temperature of the household air conditioner comprises the following steps:
step 1, monitoring the temperature of an indoor inner disc when a household air conditioner starts heating;
step 2, the temperature of the inner disc reaches the set temperature T1Indoor DC motor with N1Rotational speed starting operation ofMiddle T1To ensure a temperature at which the temperature fluctuation of the inner disc is minimal, N1The minimum rotating speed at which the indoor direct current motor can be normally started is set;
step 3, monitoring the change rate of the temperature of the inner disc, the current temperature of the inner disc and the current rotating speed parameter of the indoor direct current motor;
step 4, when the current inner disc temperature is less than or equal to T1In time, the indoor DC motor is driven by N1The rotating speed is constant, when the current inner disk temperature is more than T1Calculating a target rotating speed according to the monitored inner disc temperature change rate, the current inner disc temperature and the current indoor direct current motor rotating speed parameter, and controlling the indoor direct current motor to operate constantly according to the target rotating speed;
step 5, when N is reached2When the rotating speed of the indoor direct current motor is less than or equal to the rotating speed of the indoor direct current motor, the indoor direct current motor is driven by N2Performing constant operation, otherwise, performing constant rotation speed operation on the indoor direct current motor at the target rotation speed, wherein N2The maximum rotating speed of the indoor direct current motor.
Further, in step 2, T is1And N1Are determined experimentally.
Further, in step 2, when the indoor DC motor is N1After the rotating speed is started, the temperature of the inner disc can be reduced, and the temperature of the inner disc is lower than T1。
Further, in steps 3 and 4, determining the adjustment range of the rotating speed of the indoor direct current motor according to the monitored temperature change rate of the inner disc.
Further, in steps 3 and 4, the rising and falling trend of the temperature of the inner disc can be judged according to the monitored current temperature of the inner disc, so that the rising and falling direction of the rotating speed of the indoor direct current motor is determined.
Further, in the steps 3 and 4, a basis can be provided for the next rotating speed control process according to the monitored rotating speed of the current indoor direct current motor.
The method has the advantages that the method for controlling the heating air-out temperature of the household air conditioner aims at the constant air-out temperature and accurately controls the rotating speed of the indoor direct current motor, so that the problem that the air-out temperature and the air-out speed of the common household air conditioner fluctuate greatly under various conditions can be effectively avoided, the subjective feeling of a user is effectively improved, and the reliability of the air conditioner is improved.
Drawings
FIG. 1 is a logic control schematic of the present invention;
FIG. 2 is a schematic diagram illustrating the comparison between the air-out speed of the air conditioner of the present invention and the air-out speed of the conventional air conditioner;
FIG. 3 is a schematic diagram illustrating the comparison between the outlet air temperature of the air conditioner of the present invention and the outlet air temperature of the conventional air conditioner;
fig. 4 is a schematic diagram comparing the high pressure of the air conditioning system of the present invention with the high pressure of the conventional air conditioning system.
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
The invention relates to a control method of heating air-out temperature of a household air conditioner, the logic control diagram of which is shown in figure 1, wherein the method comprises the following steps:
step 1, monitoring the temperature of an indoor inner disc when a household air conditioner starts heating;
step 2, the temperature of the inner disc reaches the set temperature T1Indoor DC motor with N1Starting at a rotational speed, wherein T1To ensure a temperature at which the temperature fluctuation of the inner disc is minimal, N1The minimum rotating speed at which the indoor direct current motor can be normally started is obtained.
And 3, monitoring parameters such as the change rate of the temperature of the inner disc, the current rotating speed of the indoor direct current motor and the like.
Step 4, when the current inner disc temperature is less than or equal to T1In time, the indoor DC motor is driven by N1The rotating speed is constant, when the current inner disk temperature is more than T1And calculating a target rotating speed according to the monitored parameters of the change rate of the temperature of the inner disc, the current rotating speed of the indoor direct current motor and the like, and controlling the indoor direct current motor to operate constantly according to the target rotating speed. In the method, the target rotating speed of the direct current motor of the indoor unit is accurately controlled by taking the outlet air temperature as a target, and the related parameters of the logical operation are determined by a large amount of experiments.
Step 5, when N is reached2When the rotating speed of the indoor direct current motor is less than or equal to the rotating speed of the indoor direct current motor, the indoor direct current motor is driven by N2Performing constant operation, otherwise, performing constant rotation speed operation on the indoor direct current motor at the target rotation speed, wherein N2The maximum rotating speed of the indoor direct current motor.
In the above method, in step 2, said T1And N1Are determined by a number of experiments. In step 2, when the indoor DC motor is driven by N1After the rotating speed is started, the temperature of the inner disc can be reduced, and the temperature of the inner disc is lower than T1。
Preferably, in steps 3 and 4, the adjustment range of the rotation speed of the indoor direct current motor can be determined according to the monitored temperature change rate of the inner disc. In addition, the rising and falling trend of the temperature of the inner disc can be judged according to the monitored current temperature of the inner disc, so that the rising and falling directions of the rotating speed of the indoor direct current motor are determined. And according to the monitored current indoor direct current motor rotating speed, a basis can be provided for the next rotating speed control process.
In the specific application process, the schematic diagram of the comparison between the air-out speed of the air conditioner and the air-out speed of the traditional air conditioner is shown in fig. 2, and as can be seen from fig. 2, after the heating of the traditional air conditioner is started, the air-out speed changes in a step manner, and when the indoor temperature is low, the phenomenon of multiple switching of a high wind gear and a middle wind gear occurs, so that the sudden change of the air conditioner air blowing, the irregular change of the wind sound and the extremely poor feeling of a user are brought to the user. The air conditioner adopting the control scheme of the invention has stable air outlet speed transition, and the subjective feeling of a user is greatly improved compared with that of a common air conditioner in both wind feeling and body feeling.
The comparison schematic diagram of the air-conditioner air-out temperature and the traditional air-conditioner air-out temperature is shown in figure 3, and as can be seen by referring to figure 3, the air-out temperature of the traditional air conditioner is large in fluctuation after the heating of the traditional air conditioner is started, and the situation is worsened when the indoor temperature is low, so that the air blown out by the air conditioner is high in temperature for a moment and low in temperature for a moment, and the subjective feeling of a user is very poor. The air conditioner adopting the control scheme of the invention has the advantages that although the air outlet temperature fluctuates slightly when being started, the air outlet temperature rises stably and does not fluctuate, and the subjective feeling of a user is greatly improved.
The comparison schematic diagram of the high pressure of the air conditioning system and the high pressure of the traditional air conditioning system is shown in figure 4, and as can be seen by referring to figure 4, after the heating of the traditional air conditioner is started, the high pressure of the system is in a fluctuation state, but the high pressure of the system is relatively stable by adopting the air conditioner adopting the control scheme of the invention. The air conditioner adopting the control scheme of the invention is superior to the traditional air conditioner in terms of the reliability of the whole machine and energy conservation.

Claims (3)

1. The method for controlling the heating air-out temperature of the household air conditioner is characterized by comprising the following steps of:
step 1, monitoring the temperature of an indoor inner disc when a household air conditioner starts heating;
step 2, the temperature of the inner disc reaches the set temperature T1Indoor DC motor with N1Starting at a rotational speed, wherein T1To ensure a temperature at which the temperature fluctuation of the inner disc is minimal, N1The minimum rotating speed at which the indoor direct current motor can be normally started is set;
step 3, monitoring the change rate of the temperature of the inner disc, the current temperature of the inner disc and the current rotating speed parameter of the indoor direct current motor;
step 4, when the current inner disc temperature is less than or equal to T1In time, the indoor DC motor is driven by N1The rotating speed is constant, when the current inner disk temperature is more than T1Calculating a target rotating speed according to the monitored inner disc temperature change rate, the current inner disc temperature and the current indoor direct current motor rotating speed parameter, and controlling the indoor direct current motor to operate constantly according to the target rotating speed; when calculating the target rotating speed: determining the adjustment range of the rotating speed of the indoor direct current motor according to the monitored temperature change rate of the inner disc; according to the monitored current inner disc temperature, the rising and falling trend of the inner disc temperature can be judged, so that the rising and falling direction of the rotating speed of the indoor direct current motor is determined; according to the monitored current indoor direct current motor rotating speed, a basis can be provided for the next rotating speed control process;
step 5, when N is reached2When the rotating speed of the indoor direct current motor is less than or equal to the rotating speed of the indoor direct current motor, the indoor direct current motor is driven by N2Performing constant operation, otherwise, performing indoor direct current motor at the target rotating speedPerforming a constant speed operation, wherein N2The maximum rotating speed of the indoor direct current motor.
2. The method as claimed in claim 1, wherein in step 2, T is the temperature of the heated air output from the household air conditioner1And N1Are determined experimentally.
3. The method as claimed in claim 1, wherein in step 2, when the indoor dc motor is set to N, the control method is applied to the heating and air-out temperature of the household air conditioner1After the rotating speed is started, the temperature of the inner disc can be reduced, and the temperature of the inner disc is lower than T1。
CN202010212903.1A 2020-03-24 2020-03-24 Control method for heating air-out temperature of household air conditioner Active CN111397123B (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100248760B1 (en) * 1997-06-27 2000-04-01 윤종용 Heating control method for air conditioner
CN102563806A (en) * 2012-01-09 2012-07-11 广东美的电器股份有限公司 Method for controlling temperature of outlet air of air conditioner
CN104006485A (en) * 2013-02-21 2014-08-27 广东美的制冷设备有限公司 Method for controlling indoor fan rotating speed of air conditioner under heating mode
CN104197464A (en) * 2014-07-28 2014-12-10 珠海格力电器股份有限公司 Method and system for controlling heating of air conditioner
CN106500242A (en) * 2016-10-11 2017-03-15 青岛海尔空调器有限总公司 A kind of operation of air conditioner control method
CN107355952A (en) * 2017-07-28 2017-11-17 海信（山东）空调有限公司 The anti-cold air control method, apparatus and air-conditioning of a kind of air conditioner
CN109185209A (en) * 2018-10-15 2019-01-11 郑州云海信息技术有限公司 A kind of rotation speed of the fan method of adjustment and device
CN109489206A (en) * 2018-11-19 2019-03-19 奥克斯空调股份有限公司 A kind of control method, device and air conditioner promoting air conditioner heat-production comfort
CN110081569A (en) * 2019-04-30 2019-08-02 广东美的制冷设备有限公司 The control method of air conditioner
CN110319546A (en) * 2019-07-05 2019-10-11 宁波奥克斯电气股份有限公司 A kind of air conditioner temperature controlling method and air conditioner
CN110332664A (en) * 2019-05-31 2019-10-15 宁波奥克斯电气股份有限公司 A kind of air-conditioner control method and air conditioner

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100248760B1 (en) * 1997-06-27 2000-04-01 윤종용 Heating control method for air conditioner
CN102563806A (en) * 2012-01-09 2012-07-11 广东美的电器股份有限公司 Method for controlling temperature of outlet air of air conditioner
CN104006485A (en) * 2013-02-21 2014-08-27 广东美的制冷设备有限公司 Method for controlling indoor fan rotating speed of air conditioner under heating mode
CN104197464A (en) * 2014-07-28 2014-12-10 珠海格力电器股份有限公司 Method and system for controlling heating of air conditioner
CN106500242A (en) * 2016-10-11 2017-03-15 青岛海尔空调器有限总公司 A kind of operation of air conditioner control method
CN107355952A (en) * 2017-07-28 2017-11-17 海信（山东）空调有限公司 The anti-cold air control method, apparatus and air-conditioning of a kind of air conditioner
CN109185209A (en) * 2018-10-15 2019-01-11 郑州云海信息技术有限公司 A kind of rotation speed of the fan method of adjustment and device
CN109489206A (en) * 2018-11-19 2019-03-19 奥克斯空调股份有限公司 A kind of control method, device and air conditioner promoting air conditioner heat-production comfort
CN110081569A (en) * 2019-04-30 2019-08-02 广东美的制冷设备有限公司 The control method of air conditioner
CN110332664A (en) * 2019-05-31 2019-10-15 宁波奥克斯电气股份有限公司 A kind of air-conditioner control method and air conditioner
CN110319546A (en) * 2019-07-05 2019-10-11 宁波奥克斯电气股份有限公司 A kind of air conditioner temperature controlling method and air conditioner

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