CN106524445B - A kind of control method of air conditioner, system and air conditioner - Google Patents

A kind of control method of air conditioner, system and air conditioner Download PDF

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Publication number
CN106524445B
CN106524445B CN201710016348.3A CN201710016348A CN106524445B CN 106524445 B CN106524445 B CN 106524445B CN 201710016348 A CN201710016348 A CN 201710016348A CN 106524445 B CN106524445 B CN 106524445B
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China
Prior art keywords
electric heating
unit
air conditioner
air
temperature
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CN201710016348.3A
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CN106524445A (en
Inventor
曾小朗
张�浩
谭周衡
刘奇伟
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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Priority to CN201710016348.3A priority Critical patent/CN106524445B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control 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
    • F24F11/77Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41Defrosting; Preventing freezing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention proposes a kind of control method of air conditioner and systems, air conditioner includes air-conditioner outdoor unit and air conditioner room unit, the control method of air conditioner includes: the instruction for receiving air-conditioner outdoor unit and being prepared to enter into defrost, and the blower for controlling air conditioner room unit reduces revolving speed;Detect the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit;Calculate the difference DELTA T of the middle portion temperature T2 and indoor environment temperature T1 of indoor heat exchanger;Difference DELTA T is compared with preset threshold N;As Δ T >=N, internal machine of air-conditioner rotation speed of fan remains unchanged, and Xiang Suoshu air-conditioner outdoor unit is transmitted into defrost instruction;As Δ T < N, that continues control indoor unit blower turns down revolving speed.Revolving speed by reducing indoor fan improves the temperature of refrigerant, can improve defrosting effect, further increase leaving air temp, improve the comfort level of indoor user use environment.

Description

A kind of control method of air conditioner, system and air conditioner
Technical field
The present invention relates to air-conditioning technical fields, in particular to the control method, system and air-conditioning of a kind of air conditioner Device.
Background technique
Defrost mode employed in the air conditioner of the relevant technologies is all to carry out Hot-air blowing device using the delivery temperature of compressor Frost, this is just needed through four-way reversing valve ability defrost, and when starting defrost, four-way reversing valve commutation makes outdoor heat exchanger Heat release, indoor heat exchanger heat absorption will cause indoor environment temperature reduction, and in colder environment, air conditioner operation refrigeration is followed Ring, will lead to that room temperature is sometimes hot and sometimes cold, necessarily increase the discomfort of user.And in the bigger environment of air humidity, frequently Defrost operation will affect the service life of four-way reversing valve and other electrical parts.In addition, during air conditioner defrost, due to room The frost of the lower half portion of outer heat-exchanger is more difficult cleared, therefore when in top half, oneself finishes through defrost, it is necessary to until outdoor The lower half portion of heat exchanger also after complete defrost, can make air conditioner enter normal heating operation state, thus waste A part of heat, and extend defrosting process, reduce heating capacity and reduce overall heating effect.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of control methods of air conditioner.
It is another object of the present invention to propose a kind of control system of air conditioner.
Another object of the present invention also proposed a kind of air conditioner.
In view of this, a purpose according to the present invention, proposes a kind of control method of air conditioner, air conditioner includes sky It adjusts device outdoor unit and air conditioner room unit, the control method of air conditioner includes: to receive air-conditioner outdoor unit to be prepared to enter into defrost Instruction, control air conditioner room unit blower reduce revolving speed;Detect the indoor heat exchanger of indoor environment temperature T1 and indoor unit Middle portion temperature T2;Calculate the difference DELTA T of the middle portion temperature T2 and indoor environment temperature T1 of indoor heat exchanger;By difference DELTA T with Preset threshold N is compared;As Δ T >=N, internal machine of air-conditioner rotation speed of fan remains unchanged, Xiang Suoshu air-conditioner outdoor unit hair It is fed into defrost instruction;As Δ T < N, that continues control indoor unit blower turns down revolving speed.
The control method of air conditioner provided by the invention first controls the wind of indoor unit before air conditioner enters defrost pattern The operation of machine low speed, while the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit is detected, by the temperature of the two Degree difference Δ T is compared with preset threshold N, as Δ T >=N, then judges the middle portion temperature and indoor environment of indoor heat exchanger Temperature difference it is larger, be not able to satisfy the requirement of human comfort, and then control internal machine of air-conditioner rotation speed of fan and remain unchanged, pass through The revolving speed for reducing indoor fan improves the temperature of refrigerant, then is transmitted into defrost instruction to the air-conditioner outdoor unit, utilizes The refrigerant of higher temperature can improve defrosting effect, further increase leaving air temp, improve indoor user use environment Comfort level;As Δ T < N, that continues control indoor unit blower turns down revolving speed, to further improve the temperature of refrigerant, with Improve the effect of defrost and the efficiency of defrost, promotes air conditioner comforts of use.
The control method of above-mentioned air conditioner according to the present invention, can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that the value range of preset threshold N is 8 DEG C≤N≤25 DEG C.
In the technical scheme, the value range of preset threshold N is not limited to 8 DEG C≤N≤25 DEG C, preset threshold N's Value range can require progress customized according to comfort level of the user to local environment, to meet different user to local environment The requirement of temperature and the living habit of different user, personal preference etc..
In the above-mentioned technical solutions, it is preferable that after air-conditioner outdoor unit receives defrost instruction, open electric heating part, beat The first shut-off valve is opened, into defrost pattern;The operating status for obtaining electric heating part, when the operating status of electric heating part reaches default When closed state, electric heating part is closed;When satisfaction is default exits defrost condition, terminate defrost.
In the technical scheme, air-conditioner outdoor unit opens electric heating part and carries out assisting adding after receiving defrost instruction Heat to improve defrost efficiency and improve the effect of defrost, and then promotes the comfort of indoor environment temperature, avoids sometimes hot and sometimes cold existing The generation of elephant;Further, after opening electric heating part, the operating status of electric heating part is obtained in real time, when the operation of electric heating part After state reaches preset closedown condition, then electric heating part is closed, by the real-time monitoring to electric heating part operating status, guaranteed The normal operation of electric heating part and the stable operation of air conditioner, avoid temperature mistake caused by electric heating part long-play The generation of high dangerous situation extends the service life of electric heating part, improves the safety that air conditioner uses;Further, when After defrost, meet defrost condition, then exit defrost, to reduce energy consumption.
In the above-mentioned technical solutions, it is preferable that when the operating status of the electric heating part reaches default closed state, close The electric heating part is closed, is specifically included: recording the opening time of electric heating part;When the opening time of electric heating part is more than first pre- If when the time, closing electric heating part.
In the technical scheme, specifically the mode of the operating status of detection electric heating part is, passes through record electric heating part Opening time then closes electric heating part, the first preset time is basis when the opening time of electric heating part is more than preset time The specified operation duration of the power of electric heating part and the calculated electric heating part of the rated temperature reached is true in specific implementation Protect electric heating part using safe, the first preset time can be less than the specified operation duration of electric heating part, improve air conditioner Safety in utilization and reliability extend the service life of electric heating part.
In the above-mentioned technical solutions, it is preferable that when the operating status of electric heating part reaches default closed state, close electricity Heating member specifically includes: detecting the surface temperature T of electric heating part;When surface temperature T is more than or equal to the first preset temperature, close Close electric heating part.
In the technical scheme, specifically the mode of the operating status of detection electric heating part can also be, be added by detection electricity The surface temperature of real-time detection is compared by the surface temperature of warmware with the first preset temperature of electric heating part, when be greater than etc. When the first preset temperature, electric heating part is closed.First preset temperature can for electric heating part under rated power operation most The rated temperature that height can be born;In specific implementation, can also be ensure electric heating part using safe, the first preset temperature can be with Less than the nominal operating temperature of electric heating part, the safety in utilization and reliability of air conditioner are improved, the use of electric heating part is extended Service life.
Another object of the present invention also proposed a kind of control system of air conditioner, and air conditioner includes air-conditioner outdoor unit Control system with air conditioner room unit air conditioner includes: the first receiving unit, for receive air-conditioner outdoor unit prepare into Enter the instruction of defrost;First control unit, the blower for controlling air conditioner room unit reduce revolving speed;First detection unit is used In the middle portion temperature T2 of detection indoor environment temperature T1 and the indoor heat exchanger of indoor unit;Computing unit is changed for calculating interior The difference DELTA T of the middle portion temperature T2 and indoor environment temperature T1 of hot device;Judging unit, for by difference DELTA T and preset threshold N into Row compares;Transmission unit, for as Δ T >=N, internal machine of air-conditioner rotation speed of fan to remain unchanged, Xiang Suoshu air-conditioner outdoor unit It is transmitted into defrost instruction;Second control unit is used for as Δ T < N, and that continues control indoor unit blower turns down revolving speed.
A kind of control system of air conditioner provided by the invention first controls indoor unit before air conditioner enters defrost pattern The operation of blower low speed, while the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit is detected, by the two Temperature difference Δ T be compared with preset threshold N, as Δ T >=N, then judge the middle portion temperature of indoor heat exchanger and indoor The temperature difference of environment is larger, is not able to satisfy the requirement of human comfort, and then controls internal machine of air-conditioner rotation speed of fan and remain unchanged, Revolving speed by reducing indoor fan improves the temperature of refrigerant, then is transmitted into defrost instruction to the air-conditioner outdoor unit, Defrosting effect can be improved using the refrigerant of higher temperature, further increase leaving air temp, improve indoor user use Environmental amenity degree;As Δ T < N, that continues control indoor unit blower turns down revolving speed, to further improve the temperature of refrigerant Degree promotes air conditioner comforts of use to improve the effect of defrost and the efficiency of defrost.
A kind of control system of the air conditioner provided according to the present invention can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that the value range of preset threshold N is 8 DEG C≤N≤25 DEG C.
In the technical scheme, the value range of preset threshold N is not limited to 8 DEG C≤N≤25 DEG C, preset threshold N's Value range can require progress customized according to comfort level of the user to local environment, to meet different user to local environment The requirement of temperature and the living habit of different user, personal preference etc..
In the above-mentioned technical solutions, it is preferable that the second receiving unit receives defrost instruction for air-conditioner outdoor unit; First execution unit opens electric heating part after receiving defrost instruction, the first shut-off valve is opened, into defrost pattern;It obtains Unit is taken, for obtaining the operating status of electric heating part, when the operating status of electric heating part reaches default closed state, is closed Electric heating part;Second execution unit, for terminating defrost when satisfaction is preset and exits defrost condition.
In the technical scheme, air-conditioner outdoor unit opens electric heating part and carries out assisting adding after receiving defrost instruction Heat to improve defrost efficiency and improve the effect of defrost, and then promotes the comfort of indoor environment temperature, avoids sometimes hot and sometimes cold existing The generation of elephant;Further, after opening electric heating part, the operating status of electric heating part is obtained in real time, when the operation of electric heating part After state reaches preset closedown condition, then electric heating part is closed, by the real-time monitoring to electric heating part operating status, guaranteed The normal operation of electric heating part and the stable operation of air conditioner, avoid temperature mistake caused by electric heating part long-play The generation of high dangerous situation extends the service life of electric heating part, improves the safety that air conditioner uses;Further, when After defrost, meet defrost condition, then exit defrost, to reduce energy consumption.
In the above-mentioned technical solutions, it is preferable that further include: recording unit, for recording the opening time of electric heating part;The Three control units, for closing electric heating part when the opening time of electric heating part is more than the first preset time.
In the technical scheme, specifically the mode of the operating status of detection electric heating part is, passes through record electric heating part Opening time then closes electric heating part, the first preset time is basis when the opening time of electric heating part is more than preset time The specified operation duration of the power of electric heating part and the calculated electric heating part of the rated temperature reached is true in specific implementation Protect electric heating part using safe, the first preset time can be less than the specified operation duration of electric heating part, improve air conditioner Safety in utilization and reliability extend the service life of electric heating part.
In the above-mentioned technical solutions, it is preferable that further include: second detection unit, for detecting the surface temperature of electric heating part Spend T;4th control unit, for closing electric heating part when surface temperature T is more than or equal to the first preset temperature.
In the technical scheme, specifically the mode of the operating status of detection electric heating part can also be, be added by detection electricity The surface temperature of real-time detection is compared by the surface temperature of warmware with the first preset temperature of electric heating part, when be greater than etc. When the first preset temperature, electric heating part is closed.First preset temperature can for electric heating part under rated power operation most The rated temperature that height can be born;In specific implementation, can also be ensure electric heating part using safe, the first preset temperature can be with Less than the nominal operating temperature of electric heating part, the safety in utilization and reliability of air conditioner are improved, the use of electric heating part is extended Service life.
A further object of the present invention proposes a kind of air conditioner, including air-conditioner outdoor unit and air conditioner room unit, also Air conditioner control system including any of the above-described technical solution.
Air conditioner provided by the invention because of the air conditioner control system including any of the above-described technical solution, therefore has upper The whole beneficial effects for stating air conditioner control system described in any technical solution, are not repeating herein.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.
Detailed description of the invention
Fig. 1 shows the control method flow diagram of the air conditioner of one embodiment of the invention;
Fig. 2 shows the control method flow diagrams of the air conditioner of further embodiment of the present invention;
Fig. 3 shows the control system block schematic illustration of the air conditioner of one embodiment of the invention;
Fig. 4 shows the control system block schematic illustration of the air conditioner of further embodiment of the present invention;
Fig. 5 shows the control system block schematic illustration of the air conditioner of another embodiment of the invention;
Fig. 6 shows the block schematic illustration of the air conditioner of one embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
The described according to some embodiments of the invention a kind of control method and control of air conditioner are described referring to Fig. 1 and Fig. 5 System processed.
As shown in Figure 1, a kind of flow diagram of the control method of air conditioner of one embodiment of the present of invention, wherein Air conditioner includes air-conditioner outdoor unit and air conditioner room unit, and the control method of air conditioner includes:
Step 102, the instruction that air-conditioner outdoor unit is prepared to enter into defrost is received;
Step 104, the blower for controlling air conditioner room unit reduces revolving speed;
Step 106, the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit is detected;
Step 108, the difference DELTA T of the middle portion temperature T2 and indoor environment temperature T1 of indoor heat exchanger are calculated;
Step 110, judge whether difference DELTA T is more than or equal to preset threshold N;
Step 112, as Δ T >=N, internal machine of air-conditioner rotation speed of fan remains unchanged, and Xiang Suoshu air-conditioner outdoor unit is sent It is instructed into defrost;As Δ T < N, return step 104, which continues to control indoor unit blower, turns down revolving speed.
The control method of air conditioner provided by the invention first controls the wind of indoor unit before air conditioner enters defrost pattern The operation of machine low speed, while the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit is detected, by the temperature of the two Degree difference Δ T is compared with preset threshold N, as Δ T >=N, then judges the middle portion temperature and indoor environment of indoor heat exchanger Temperature difference it is larger, be not able to satisfy the requirement of human comfort, and then control internal machine of air-conditioner rotation speed of fan and remain unchanged, pass through The revolving speed for reducing indoor fan improves the temperature of refrigerant, then is transmitted into defrost instruction to the air-conditioner outdoor unit, utilizes The refrigerant of higher temperature can improve defrosting effect, further increase leaving air temp, improve indoor user use environment Comfort level;As Δ T < N, that continues control indoor unit blower turns down revolving speed, to further improve the temperature of refrigerant, with Improve the effect of defrost and the efficiency of defrost, promotes air conditioner comforts of use.
In one embodiment of the invention, the value range of preset threshold N is not limited to 8 DEG C≤N≤25 DEG C, presets The value range of threshold value N can require progress customized according to comfort level of the user to local environment, to meet different user pair The requirement of local environment temperature and the living habit of different user, personal preference etc..
As shown in Fig. 2, a kind of flow diagram of the control method of air conditioner of yet another embodiment of the present invention, In, air conditioner includes air-conditioner outdoor unit and air conditioner room unit, and the control method of air conditioner includes:
Step 202, the instruction that air-conditioner outdoor unit is prepared to enter into defrost is received;
Step 204, the blower for controlling air conditioner room unit reduces revolving speed;
Step 206, the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit is detected;
Step 208, the difference DELTA T of the middle portion temperature T2 and indoor environment temperature T1 of indoor heat exchanger are calculated;
Step 210, judge whether difference DELTA T is more than or equal to preset threshold N;
Step 212, as Δ T >=N, internal machine of air-conditioner rotation speed of fan remains unchanged, and Xiang Suoshu air-conditioner outdoor unit is sent It is instructed into defrost;As Δ T < N, return step 204, which continues to control indoor unit blower, turns down revolving speed;
Step 214, electric heating part is opened, the first shut-off valve is opened, into defrost pattern;
Step 216, the operating status for obtaining electric heating part, when the operating status of electric heating part reaches default closed state When, close electric heating part;
Step 218, the opening time of electric heating part is recorded;
Step 220, when the opening time of electric heating part is more than the first preset time, electric heating part is closed;Or
Step 222, the surface temperature T of electric heating part is detected;
Step 224, when surface temperature T is more than or equal to the first preset temperature, electric heating part is closed
Step 226, when satisfaction is default exits defrost condition, terminate defrost.
In one embodiment of the invention, air-conditioner outdoor unit receive defrost instruction after, open electric heating part into Row auxiliary heating to improve defrost efficiency and improve the effect of defrost, and then promotes the comfort of indoor environment temperature, avoids neglecting The cold generation for neglecting thermal phenomenon;Further, after opening electric heating part, the operating status of electric heating part is obtained in real time, works as electric heating After the operating status of part reaches preset closedown condition, then electric heating part is closed, by the real-time of electric heating part operating status Monitoring, ensure that the normal operation of electric heating part and the stable operation of air conditioner, avoids electric heating part long-play and lead The generation of the excessively high dangerous situation of the temperature of cause extends the service life of electric heating part, improves the safety that air conditioner uses;Into One step, after defrost, meet defrost condition, then exit defrost, to reduce energy consumption.
In one embodiment of the invention, specifically the mode of the operating status of detection electric heating part is, passes through record electricity The opening time of heating member then closes electric heating part when the opening time of electric heating part is more than preset time, first it is default when Between be the power according to electric heating part and the calculated electric heating part of the rated temperature reached specified operation duration, specific implementation In, for ensure electric heating part using safe, the first preset time can be less than the specified operation duration of electric heating part, improve empty The safety in utilization and reliability for adjusting device, extend the service life of electric heating part.
In one embodiment of the invention, specifically the mode of the operating status of detection electric heating part can also be to pass through The surface temperature for detecting electric heating part, the surface temperature of real-time detection is compared with the first preset temperature of electric heating part, When being more than or equal to the first preset temperature, electric heating part is closed.First preset temperature can be transported for electric heating part in rated power The rated temperature that highest under row can be born;In specific implementation, can also be ensure electric heating part using safe, first is default Temperature can be less than the nominal operating temperature of electric heating part, improve the safety in utilization and reliability of air conditioner, extend electric heating The service life of part.
As shown in figure 3, a kind of frame diagram of the control system 300 of air conditioner of one embodiment of the present of invention, wherein empty Adjusting device includes air-conditioner outdoor unit and air conditioner room unit, and the frame diagram of the control system 300 of air conditioner includes:
First receiving unit 301, the instruction for being prepared to enter into defrost for receiving air-conditioner outdoor unit;
First control unit 302, the blower for controlling air conditioner room unit reduce revolving speed;
First detection unit 303, the middle portion temperature of the indoor heat exchanger for detecting indoor environment temperature T1 and indoor unit T2;
Computing unit 304, the difference DELTA T of middle portion temperature T2 and indoor environment temperature T1 for calculating indoor heat exchanger;
Judging unit 305, for difference DELTA T to be compared with preset threshold N;
Transmission unit 306, for as Δ T >=N, internal machine of air-conditioner rotation speed of fan to remain unchanged, Xiang Suoshu air conditioner chamber Outer machine is transmitted into defrost instruction;
Second control unit 307 is used for as Δ T < N, and that continues control indoor unit blower turns down revolving speed.
A kind of control system of air conditioner provided by the invention first controls indoor unit before air conditioner enters defrost pattern The operation of blower low speed, while the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and indoor unit is detected, by the two Temperature difference Δ T be compared with preset threshold N, as Δ T >=N, then judge the middle portion temperature of indoor heat exchanger and indoor The temperature difference of environment is larger, is not able to satisfy the requirement of human comfort, and then controls internal machine of air-conditioner rotation speed of fan and remain unchanged, Revolving speed by reducing indoor fan improves the temperature of refrigerant, then is transmitted into defrost instruction to the air-conditioner outdoor unit, Defrosting effect can be improved using the refrigerant of higher temperature, further increase leaving air temp, improve indoor user use Environmental amenity degree;As Δ T < N, that continues control indoor unit blower turns down revolving speed, to further improve the temperature of refrigerant Degree promotes air conditioner comforts of use to improve the effect of defrost and the efficiency of defrost.
In one embodiment of invention, the value range of preset threshold N is not limited to 8 DEG C≤N≤25 DEG C, presets threshold The value range of value N can require progress customized according to comfort level of the user to local environment, to meet different user to institute Locate the requirement of environment temperature and the living habit of different user, personal preference etc..
As shown in figure 4, a kind of frame diagram of the control system 400 of air conditioner of yet another embodiment of the present invention, wherein Air conditioner includes air-conditioner outdoor unit and air conditioner room unit, and the frame diagram of the control system 400 of air conditioner includes:
First receiving unit 401, the instruction for being prepared to enter into defrost for receiving air-conditioner outdoor unit;
First control unit 402, the blower for controlling air conditioner room unit reduce revolving speed;
First detection unit 403, the middle portion temperature of the indoor heat exchanger for detecting indoor environment temperature T1 and indoor unit T2;
Computing unit 404, the difference DELTA T of middle portion temperature T2 and indoor environment temperature T1 for calculating indoor heat exchanger;
Judging unit 405, for difference DELTA T to be compared with preset threshold N;
Transmission unit 406, for as Δ T >=N, internal machine of air-conditioner rotation speed of fan to remain unchanged, Xiang Suoshu air conditioner chamber Outer machine is transmitted into defrost instruction;
Second control unit 407 is used for as Δ T < N, and that continues control indoor unit blower turns down revolving speed;
Preferably, further includes:
Second receiving unit 408 receives defrost instruction for air-conditioner outdoor unit;
First execution unit 409 opens electric heating part after receiving defrost instruction, opens the first shut-off valve, enters Defrost pattern;
Acquiring unit 410, for obtaining the operating status of electric heating part, when the operating status of electric heating part reaches default pass When closed state, electric heating part is closed;
Second execution unit 411, for terminating defrost when satisfaction is preset and exits defrost condition.
In one embodiment of the invention, air-conditioner outdoor unit receive defrost instruction after, open electric heating part into Row auxiliary heating to improve defrost efficiency and improve the effect of defrost, and then promotes the comfort of indoor environment temperature, avoids neglecting The cold generation for neglecting thermal phenomenon;Further, after opening electric heating part, the operating status of electric heating part is obtained in real time, works as electric heating After the operating status of part reaches preset closedown condition, then electric heating part is closed, by the real-time of electric heating part operating status Monitoring, ensure that the normal operation of electric heating part and the stable operation of air conditioner, avoids electric heating part long-play and lead The generation of the excessively high dangerous situation of the temperature of cause extends the service life of electric heating part, improves the safety that air conditioner uses;Into One step, after defrost, meet defrost condition, then exit defrost, to reduce energy consumption.
In one embodiment of the invention, it is preferable that acquiring unit 410 further include:
Recording unit 4102, for recording the opening time of electric heating part;
Third control unit 4104, for closing electricity and adding when the opening time of electric heating part is more than the first preset time Warmware.
In this embodiment, specifically the mode of the operating status of detection electric heating part is to pass through opening for record electric heating part Duration is opened, when the opening time of electric heating part is more than preset time, then closes electric heating part, the first preset time is according to electricity The specified operation duration of the power of heating member and the calculated electric heating part of the rated temperature reached, in specific implementation, to ensure Electric heating part using safe, the first preset time can be less than the specified operation duration of electric heating part, improve making for air conditioner With safety and reliability, extend the service life of electric heating part.
As shown in figure 5, a kind of frame diagram of the control system 500 of air conditioner of yet another embodiment of the present invention, wherein Air conditioner includes air-conditioner outdoor unit and air conditioner room unit, and the frame diagram of the control system 500 of air conditioner includes:
First receiving unit 501, the instruction for being prepared to enter into defrost for receiving air-conditioner outdoor unit;
First control unit 502, the blower for controlling air conditioner room unit reduce revolving speed;
First detection unit 503, the middle portion temperature of the indoor heat exchanger for detecting indoor environment temperature T1 and indoor unit T2;
Computing unit 504, the difference DELTA T of middle portion temperature T2 and indoor environment temperature T1 for calculating indoor heat exchanger;
Judging unit 505, for difference DELTA T to be compared with preset threshold N;
Transmission unit 506, for as Δ T >=N, internal machine of air-conditioner rotation speed of fan to remain unchanged, Xiang Suoshu air conditioner chamber Outer machine is transmitted into defrost instruction;
Second control unit 507 is used for as Δ T < N, and that continues control indoor unit blower turns down revolving speed;
Preferably, further includes:
Second receiving unit 508 receives defrost instruction for air-conditioner outdoor unit;
First execution unit 509 opens electric heating part after receiving defrost instruction, opens the first shut-off valve, enters Defrost pattern;
Acquiring unit 510, for obtaining the operating status of electric heating part, when the operating status of electric heating part reaches default pass When closed state, electric heating part is closed;
Second execution unit 511, for terminating defrost when satisfaction is preset and exits defrost condition.
In one embodiment of the invention, it is preferable that acquiring unit 510 further include:
Second detection unit 5102, for detecting the surface temperature T of electric heating part;
4th control unit 5104, for closing electric heating part when surface temperature T is more than or equal to the first preset temperature.
In this embodiment, specifically the mode of the operating status of detection electric heating part can also be, by detecting electric heating The surface temperature of real-time detection is compared by the surface temperature of part with the first preset temperature of electric heating part, when being more than or equal to When the first preset temperature, electric heating part is closed.First preset temperature can be highest of the electric heating part under rated power operation The rated temperature that can be born;In specific implementation, can also be ensure electric heating part using safe, the first preset temperature can be small In the nominal operating temperature of electric heating part, the safety in utilization and reliability of air conditioner are improved, extend electric heating part uses the longevity Life.
As shown in fig. 6, one embodiment of the present of invention proposes a kind of air conditioner 600, including air-conditioner outdoor unit and sky Air conditioner indoor machine is adjusted, further includes the air conditioner control system 610 of any of the above-described technical solution.
Air conditioner 600 provided by the invention, because of the air conditioner control system 610 including any of the above-described technical solution, therefore Whole beneficial effects with air conditioner control system 610 described in any of the above-described technical solution, are not repeating herein.
In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection It is to be detachably connected, or be integrally connected;" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (11)

1. a kind of control method of air conditioner, the air conditioner include air-conditioner outdoor unit and air conditioner room unit, feature exists In the control method of the air conditioner includes:
The instruction that the air-conditioner outdoor unit is prepared to enter into defrost is received, the blower for controlling the air conditioner room unit, which reduces, to be turned Speed;
Detect the middle portion temperature T2 of the indoor heat exchanger of indoor environment temperature T1 and the indoor unit;
Calculate the difference DELTA T of the middle portion temperature T2 and the indoor environment temperature T1 of the indoor heat exchanger;
The difference DELTA T is compared with preset threshold N;
As Δ T >=N, the internal machine of air-conditioner rotation speed of fan remains unchanged, and Xiang Suoshu air-conditioner outdoor unit is transmitted into defrost Instruction;
As Δ T < N, that continues to control the indoor unit blower turns down revolving speed.
2. the control method of air conditioner according to claim 1, which is characterized in that
The value range of the preset threshold N is 8 DEG C≤N≤25 DEG C.
3. the control method of air conditioner according to claim 1, which is characterized in that
After the air-conditioner outdoor unit receives defrost instruction, electric heating part is opened, the first shut-off valve is opened, into defrost mould Formula;
The operating status for obtaining the electric heating part is closed when the operating status of the electric heating part reaches default closed state Close the electric heating part;
When satisfaction is default exits defrost condition, terminate defrost.
4. the control method of air conditioner according to claim 3, which is characterized in that the operation when the electric heating part When state reaches default closed state, the electric heating part is closed, is specifically included:
Record the opening time of the electric heating part;
When the opening time of the electric heating part is more than the first preset time, the electric heating part is closed.
5. the control method of air conditioner according to claim 3, which is characterized in that the operation when the electric heating part When state reaches default closed state, the electric heating part is closed, is specifically included:
Detect the surface temperature T of the electric heating part;
When the surface temperature T is more than or equal to the first preset temperature, the electric heating part is closed.
6. a kind of control system of air conditioner, the air conditioner include air-conditioner outdoor unit and air conditioner room unit, feature exists In the control system of the air conditioner includes:
First receiving unit, the instruction for being prepared to enter into defrost for receiving the air-conditioner outdoor unit;
First control unit, the blower for controlling the air conditioner room unit reduce revolving speed;
First detection unit, the middle portion temperature T2 of the indoor heat exchanger for detecting indoor environment temperature T1 and the indoor unit;
Computing unit, the difference DELTA T of middle portion temperature T2 and the indoor environment temperature T1 for calculating the indoor heat exchanger;
Judging unit, for the difference DELTA T to be compared with preset threshold N;
Transmission unit, for as Δ T >=N, the internal machine of air-conditioner rotation speed of fan to remain unchanged, Xiang Suoshu air-conditioner outdoor unit It is transmitted into defrost instruction;
Second control unit, for as Δ T < N, that continues to control the indoor unit blower turns down revolving speed.
7. the control system of air conditioner according to claim 6, which is characterized in that
The value range of the preset threshold N is 8 DEG C≤N≤25 DEG C.
8. the control system of air conditioner according to claim 6, which is characterized in that
Second receiving unit receives defrost instruction for the air-conditioner outdoor unit;
First execution unit opens electric heating part, the first shut-off valve is opened, into change after receiving the defrost instruction White mode;
Acquiring unit, for obtaining the operating status of the electric heating part, when the operating status of the electric heating part reaches default When closed state, the electric heating part is closed;
Second execution unit, for terminating defrost when satisfaction is preset and exits defrost condition.
9. the control system of air conditioner according to claim 8, which is characterized in that further include:
Recording unit, for recording the opening time of the electric heating part;
Third control unit adds for when the opening time of the electric heating part is more than the first preset time, closing the electricity Warmware.
10. the control system of air conditioner according to claim 8, which is characterized in that further include:
Second detection unit, for detecting the surface temperature T of the electric heating part;
4th control unit, for closing the electric heating part when the surface temperature T is more than or equal to the first preset temperature.
11. a kind of air conditioner, the air conditioner includes air-conditioner outdoor unit and air conditioner room unit, which is characterized in that further include: Air conditioner control system as described in any one of claim 6 to 10.
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CN108488994A (en) * 2018-02-14 2018-09-04 青岛海尔空调器有限总公司 Air conditioner defrosting control method
CN108775675A (en) * 2018-05-24 2018-11-09 青岛海尔空调器有限总公司 Air conditioner defrosting control method
CN108592294B (en) * 2018-05-24 2020-09-25 青岛海尔空调器有限总公司 Defrosting control method for air conditioner
CN109028464B (en) * 2018-05-24 2020-11-03 青岛海尔空调器有限总公司 Defrosting control method for air conditioner
CN109028465B (en) * 2018-05-24 2021-04-20 青岛海尔空调器有限总公司 Defrosting control method for air conditioner
CN108759168A (en) * 2018-06-20 2018-11-06 广东美的暖通设备有限公司 Heat pump system, defrosting method and device
CN109506335A (en) * 2018-11-19 2019-03-22 珠海格力电器股份有限公司 Control method, system, storage medium and the air-conditioning of the auxiliary thermal of air conditioner electric
CN109974203B (en) * 2019-03-06 2021-03-23 青岛海信日立空调系统有限公司 Defrosting method of air conditioner and air conditioner
CN110500649B (en) * 2019-08-15 2021-05-25 海信(山东)空调有限公司 Control method and device of air duct machine and air duct machine
CN110513831B (en) * 2019-08-19 2021-04-16 宁波奥克斯电气股份有限公司 Control method for improving heating comfort during defrosting and air conditioning system
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