CN105972772B - The defrosting control method and device of air conditioner - Google Patents
The defrosting control method and device of air conditioner Download PDFInfo
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- CN105972772B CN105972772B CN201610375031.4A CN201610375031A CN105972772B CN 105972772 B CN105972772 B CN 105972772B CN 201610375031 A CN201610375031 A CN 201610375031A CN 105972772 B CN105972772 B CN 105972772B
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- 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
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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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- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of defrosting control method of air conditioner, this method process includes: the temperature of the indoor heat exchanger of air conditioner described in real-time or timing acquisition during the defrosting of the outdoor heat exchanger of the air conditioner；The revolving speed of indoor fan and/or the air outlet angle of wind deflector are adjusted according to the temperature of the indoor heat exchanger, wherein the temperature of the indoor heat exchanger is lower, and the air outlet angle of smaller, the described wind deflector of the revolving speed of the indoor fan is smaller.The present invention also proposes a kind of defrosting control device of air conditioner.The invention avoids air conditioners to influence air conditioner comfort because of indoor fan blowing cold air in defrosting, while can be avoided compressor and starting failure in pattern switching.
Description
Technical field
The present invention relates to air conditioner technical field more particularly to the defrosting control methods and device of a kind of air conditioner.
Background technique
Domestic heat pump air conditioner device in winter heating operation when, outdoor heat exchanger absorbs heat, when outdoor ring as evaporator
When border temperature is too low or heating operation overlong time, the temperature of the refrigerant pipe of outdoor heat exchanger will lead to lower than zero degree, it is outdoor
Moisture in air is frosted in the condensation of outdoor heat exchanger surface even to freeze, and will lead to changing for heat exchanger after outdoor heat exchanger frosting
The thermal efficiency reduces, to influence indoor heating effect, therefore heat pump air conditioning system needs to carry out defrosting processing.
Existing heat pump air conditioner Defrost mode is usually to be run and switched by heating mode by the way of four-way valve commutation
It is run to refrigeration mode, the high temperature and pressure refrigerant of the discharge of compressor enters outdoor unit heat exchanger, and is attached to outdoor unit heat exchanger
On frost layer carry out heat exchange, and then achieve the purpose that defrosting, but due to the inverse operating of refrigeration mode, each defrosting of outdoor unit
It requiring through indoor heat exchanger from indoor draw heat, room temperature can be gradually decreased with the progress of defrosting process, when
When temperature is near lower, air outlet of indoor set blowing cold air will lead to, seriously affect the comfort of heat pump air conditioner.
It is in the prior art usually directly to close indoor fan when switching four-way valve to solve the problems, such as to blow a cold wind over
It closes, since before switching four-way valve, indoor unit is run with heating mode, after closing indoor fan, indoor unit heat is still
It is relatively high, when causing indoor unit pressure in the short time to increase, and then compressor being caused to be again started up, led due to pressure imbalance
It causes starting failure and cannot normally defrost.
Summary of the invention
The present invention provides the defrosting control method and device of a kind of air conditioner, and main purpose is that air conditioner is avoided to remove
Air conditioner comfort is influenced because of indoor fan blowing cold air when white, while can be avoided compressor and starting mistake in pattern switching
It loses.
To achieve the above object, the present invention provides a kind of defrosting control method of air conditioner, the defrosting control of the air conditioner
Method includes:
During the defrosting of the outdoor heat exchanger of the air conditioner, the indoor heat exchange of air conditioner described in real-time or timing acquisition
The temperature of device；
The revolving speed of indoor fan and/or the air outlet angle of wind deflector are adjusted according to the temperature of the indoor heat exchanger, wherein
The temperature of the indoor heat exchanger is lower, and the air outlet angle of smaller, the described wind deflector of the revolving speed of the indoor fan is smaller.
Optionally, the defrosting control method of the air conditioner further comprises the steps of:
After the air conditioner exits defrosting mode and recovery to heating mode, interior heat exchange described in real-time or timing acquisition
The temperature of device；
It is when the temperature for getting the indoor heat exchanger is greater than the first preset temperature, the revolving speed of the indoor fan is extensive
The multiple revolving speed to before defrosting, and the air outlet angle of the wind deflector is restored to the air outlet angle to defrosting.
Optionally, the step of revolving speed that indoor fan is adjusted according to the temperature of the indoor heat exchanger includes:
When the temperature of the indoor heat exchanger got is greater than the second preset temperature, the temperature of the indoor heat exchanger
The first preset temperature of every decline is poor, and the current rotating speed of the indoor fan is reduced preset rotation speed value；
When the temperature of the indoor heat exchanger got is less than or equal to second preset temperature, the room is controlled
Inner blower is closed.
Optionally, the step of air outlet angle that wind deflector is adjusted according to the temperature of the indoor heat exchanger includes:
The temperature of the indoor heat exchanger got the second preset temperature of every decline is poor, by currently going out for the wind deflector
The reduction preset angle angle value of wind angle, until the current air outlet angle of the wind deflector is zero.
Optionally, the step of air outlet angle that wind deflector is adjusted according to the temperature of the indoor heat exchanger includes:
When the current air outlet angle of the wind deflector is zero, and the revolving speed of the indoor ventilating fan is not zero, control
The indoor fan is made to close.
In addition, to achieve the above object, the present invention also provides a kind of defrosting control device of air conditioner, which is removed
White control device includes:
Obtain module, for the air conditioner outdoor heat exchanger defrosting during, in real time or timing acquisition described in sky
Adjust the temperature of the indoor heat exchanger of device；
Control module, for adjusting the revolving speed and/or wind deflector of indoor fan according to the temperature of the indoor heat exchanger
Air outlet angle, wherein the temperature of the indoor heat exchanger is lower, and smaller, the described wind deflector of the revolving speed of the indoor fan goes out
Wind angle is smaller.
Optionally, the acquisition module is also used to after the air conditioner exits defrosting mode and recovery to heating mode,
The temperature of indoor heat exchanger described in real-time or timing acquisition；
The control module is also used to when the temperature for getting the indoor heat exchanger is greater than the first preset temperature, will
The revolving speed of the indoor fan restores the revolving speed to defrosting, and the air outlet angle of the wind deflector is restored going out to defrosting
Wind angle.
Optionally, the control module is also used to preset when the temperature of the indoor heat exchanger got is greater than second
When temperature, the temperature of the indoor heat exchanger the first preset temperature of every decline is poor, and the current rotating speed of the indoor fan is reduced
Preset rotation speed value；
And when the temperature of the indoor heat exchanger got is less than or equal to second preset temperature, control
The indoor fan is closed.
Optionally, the control module, the every decline second of the temperature for the indoor heat exchanger for being also used to get are default
Temperature difference, by the reduction preset angle angle value of the current air outlet angle of the wind deflector, until the current outlet air angle of the wind deflector
Degree is zero.
Optionally, the control module is also used to when the current air outlet angle of the wind deflector be zero, and the room
When the revolving speed of interior ventilating fan is not zero, controls the indoor fan and close.
The defrosting control method and device of air conditioner proposed by the present invention, due to the outdoor heat exchanger defrosting process of air conditioner
In, air conditioner runs refrigeration mode, and indoor heat exchanger with defrosting can gradually decrease as evaporator, temperature, because
This, during defrosting, real-time or timing acquisition indoor heat exchanger temperature adjusts indoor according to the temperature of indoor heat exchanger
The revolving speed of blower and/or the air outlet angle of wind deflector reduce indoor unit with the decline of the temperature of the indoor heat exchanger got
Revolving speed, reduce the wind speed of air outlet of indoor set, and/or reduce wind deflector air outlet angle, avoid cold wind from blowing to user；And
And when being converted to defrosting mode by heating mode due to air conditioner, the temperature of indoor heat exchanger is higher, keeps indoor wind at this time
Machine is in the open state, can distribute heat, keeps the pressure balance of air-conditioning system, compressor is normally opened
It is dynamic to defrost.
Detailed description of the invention
Fig. 1 is the flow chart of the defrosting control method first embodiment of the air condition of that present invention；
Fig. 2 is the structural schematic diagram of heat pump air conditioner in the defrosting control method of the air condition of that present invention；
Fig. 3 is the flow chart of the defrosting control method second embodiment of the air condition of that present invention；
Fig. 4 is the functional block diagram of the defrosting control device first embodiment of the air condition of that present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of defrosting control method of air conditioner.It is the defrosting control of the air condition of that present invention shown in referring to Fig.1
The flow chart of method first embodiment processed.
In the present embodiment, the defrosting control method of the air conditioner includes:
Step S10, during the defrosting of the outdoor heat exchanger of the air conditioner, air conditioner described in real-time or timing acquisition
The temperature of indoor heat exchanger.
It should be noted that the defrosting control method for the air conditioner that the present embodiment proposes is suitable for the sky with heat-production functions
Adjust device, such as heat pump air conditioner.In following embodiment, by taking heat pump air conditioner as an example, defrosting control method is illustrated.
It is a kind of structural schematic diagram of heat pump air conditioner 100 according to shown in Fig. 2.The heat pump air conditioner 100 includes compressor
10, four-way valve 20, outdoor heat exchanger 30, throttle part 40, indoor heat exchanger 50, wherein it is swollen that throttle part 40 can be electronics
Swollen valve.In heating operations, the high temperature and pressure refrigerant that the exhaust outlet 11 of compressor 10 is discharged commutates air conditioner by four-way valve 20
Afterwards, flow into indoor heat exchanger 50, by the ducting system of indoor heat exchanger 50 heat lasting to indoor offer, while refrigerant from
It is condensed in indoor heat exchanger 50, temperature is declined, then flows into throttle part 40, the vapour after the decompression of throttle part 40
Liquid mixing refrigerant enters outdoor heat exchanger 30, and refrigerant evaporates in outdoor heat exchanger 30, and the low-temp low-pressure refrigerant after evaporation passes through
After four-way valve 20 commutates, the gas returning port 12 of compressor 10 is returned to, is so recycled, provides lasting heat for interior.Room in winter
In the outer lower situation of temperature, since outdoor heat exchanger 30 is used as evaporator, heat is absorbed, causes the steam in air can be in room
The surface frosting of external heat exchanger 30 forms frost layer.
Based on above-mentioned air conditioner structure, illustrate the control method of defrosting below:
When outdoor heat exchanger frosting, need to defrost for outdoor heat exchanger, if may cause air conditioner without defrosting in time
It shuts down, or can not normally start in use next time, therefore, can be passed through by user as remote controler equal controller touches manually
Hair defrosting instruction, defrosts, or setting automatic detecting machine system, air conditioner judge automatically whether defrost.
When the frosting of outdoor heat exchanger surface, the temperature of outdoor heat exchanger outlet will lead to lower than the temperature under normal heating mode
Degree, therefore temperature-detecting device, such as temperature sensing package can be set in the outlet of outdoor heat exchanger, in the heating operation mistake of air conditioner
Cheng Zhong, the outlet temperature of outdoor heat exchanger described in timing or real-time detection, when detecting outlet temperature lower than preset temperature,
Determine that outdoor heat exchanger defrosts.Above-mentioned preset temperature, can be by user according to the practical service environment etc. of air conditioner
Situation is configured.
When detecting that outdoor heat exchanger is defrosted, close compressor, and outdoor fan is closed, switch four-way
Valve makes the high temperature and pressure refrigerant in compressor flow into outdoor heat exchanger, and control air conditioner enters refrigeration mode operation, at this point, being
The working frequency of compressor can be increased, keep it big by realization quick defrost by the aperture regulation of electric expansion valve to maximum
Working frequency when air conditioner heat-production mode operation.
Since air conditioner is operation heating mode before entering defrosting mode, indoor fan is in the open state, with
Certain rotary speed working, and wind deflector has certain air outlet angle, wherein the revolving speed of indoor fan and the outlet air angle of wind deflector
It spends related with the air conditioner operating parameter of user setting.And the air outlet temperature of air conditioner room unit and indoor heat exchanger temperature phase
It closes, the temperature of indoor heat exchanger is higher, then the air temperature of air outlet blowout is higher.
When air conditioner enters defrosting mode, the revolving speed of indoor fan and the air outlet angle of wind deflector are continued to work as
Preceding state operation.Since air conditioner is in heating operation, the temperature of indoor unit is higher, and pressure is big, when switching to defrosting mould
After formula, the revolving speed of indoor fan and the air outlet angle of wind deflector continue to run with current state, can be by indoor unit
Heat distribute, avoid the occurrence of pressure imbalance and compressor start caused to fail.
During the defrosting of the outdoor heat exchanger of air conditioner, indoor heat exchanger absorbs heat, therefore, room as evaporator
The temperature of interior heat exchanger can gradually decrease, real-time or timing acquisition indoor heat exchanger temperature.Temperature about indoor heat exchanger
In one embodiment temperature-detecting device, such as temperature sensing package can be arranged in the middle part of the coil pipe of heat exchanger indoors in the acquisition of degree,
Temperature of the temperature that acquisition temperature sensing package detects in real time as indoor heat exchanger；Alternatively, in another embodiment, respectively in coil pipe
Entrance, middle part, exit be arranged temperature-detecting device, obtain the average value for the temperature that these temperature-detecting devices detect,
Temperature as indoor heat exchanger.
Step S20 adjusts the revolving speed of indoor fan and/or the outlet air angle of wind deflector according to the temperature of the indoor heat exchanger
Degree, wherein the temperature of the indoor heat exchanger is lower, the air outlet angle of smaller, the described wind deflector of the revolving speed of the indoor fan
It is smaller.
During defrosting, the temperature of the indoor heat exchanger got can be gradually reduced, at this point, if indoor fan still
According to current revolving speed or wind deflector still according to current air outlet angle, it may result in user and blow to cold wind, therefore, be
The case where avoiding such case, being declined according to the temperature of indoor heat exchanger, gradually decreases the revolving speed of indoor fan, reduces simultaneously
The air outlet angle of wind deflector.
About the adjusting of indoor fan revolving speed, in one embodiment, it is referred to following steps:
When the temperature of the indoor heat exchanger got is greater than the second preset temperature, the temperature of the indoor heat exchanger
The first preset temperature of every decline is poor, and the current rotating speed of the indoor fan is reduced preset rotation speed value.Air conditioner normally heats fortune
When row, the temperature of indoor heat exchanger will be typically higher than human body temperature, reach 40-50 DEG C, or even can be higher than 50 DEG C, and with removing
The progress of frost, the temperature value can gradually decrease, and when being lower than human body temperature, sense of discomfort can be brought to user, above-mentioned first is default
Temperature difference and preset rotation speed value can be set as needed by user, for example, the first preset temperature difference can be 3-5 DEG C, be preset
Tachometer value can be 80-120r/min, and the temperature of indoor heat exchanger is every to reduce by 5 DEG C, by indoor fan on the basis of current rotating speed
Upper reduction 100r/min, until revolving speed is reduced to zero.
It in other embodiments, can be using other regulative modes, for example, rotation speed of fan and indoor heat exchanger indoors
Linear relationship is established between temperature, with gradually decreasing for indoor heat exchanger temperature, reduces the revolving speed of indoor fan in real time.Make
The ratio obtained between the temperature and indoor fan of indoor heat exchanger remains unchanged, until indoor fan revolving speed is decreased to zero.
It should be noted that when the temperature of indoor heat exchanger is down to too low, even if indoor fan is transported with lesser revolving speed
Row, may still can bring sense of discomfort to user, therefore, further, above-mentioned regulative mode is based on, when the temperature of indoor heat exchanger
When degree is lower than the second preset temperature, indoor fan is directly closed, wherein the value of the second preset temperature can be as needed by user
Setting, such as 20 DEG C.
About the regulative mode of wind deflector angle, it is referred to following steps: the temperature of the indoor heat exchanger got
It is poor to spend the second preset temperature of every decline, by the reduction preset angle angle value of the current air outlet angle of the wind deflector, until described lead
The current air outlet angle of aerofoil is zero, wherein preset angle angle value can be set as needed by user.For example, indoor heat exchanger
Every temperature reduce by 5 DEG C, the angle of wind deflector is reduced 5 degree on the basis of current angular, up to being decreased to zero degree.
In other embodiments, linear pass can be established between the air outlet angle and indoor heat exchanger temperature of wind deflector
System reduces the air outlet angle of wind deflector, so that the temperature of indoor heat exchanger with gradually decreasing for indoor heat exchanger temperature in real time
Ratio between the air outlet angle of wind deflector remains unchanged, until air outlet angle is decreased to zero, i.e. wind deflector completely closes.
Further, when the current air outlet angle of the wind deflector is zero, and the revolving speed of the indoor ventilating fan is not
When being zero, controls the indoor fan and close.
The defrosting control method for the air conditioner that the present embodiment proposes, during the outdoor heat exchanger defrosting of air conditioner,
Air conditioner runs refrigeration mode, and indoor heat exchanger with defrosting can gradually decrease as evaporator, temperature, therefore,
During defrosting, real-time or timing acquisition indoor heat exchanger temperature adjusts indoor wind according to the temperature of indoor heat exchanger
The revolving speed of machine and/or the air outlet angle of wind deflector reduce indoor unit with the decline of the temperature of the indoor heat exchanger got
Revolving speed reduces the wind speed of air outlet of indoor set, and/or reduces the air outlet angle of wind deflector, and cold wind is avoided to blow to user；And
And when being converted to defrosting mode by heating mode due to air conditioner, the temperature of indoor heat exchanger is higher, keeps indoor wind at this time
Machine is in the open state, can distribute heat, keeps the pressure balance of air-conditioning system, compressor is normally opened
It is dynamic to defrost.
The second embodiment of the defrosting control method of the air condition of that present invention is proposed based on first embodiment.Referring to shown in Fig. 3,
In the present embodiment, the defrosting control method of the air conditioner further comprises the steps of:
Step S30, after the air conditioner exits defrosting mode and recovery to heating mode, in real time or described in timing acquisition
The temperature of indoor heat exchanger；
Step S40, when the temperature for getting the indoor heat exchanger is greater than the first preset temperature, by the indoor fan
Revolving speed restore the revolving speed to defrosting, and the air outlet angle of the wind deflector is restored to the air outlet angle to defrosting.
After air conditioner exits defrosting mode, it can restore to heating mode, with the operating parameter for the preceding user setting that defrosts
Continue to heat, wherein the operating parameter of air conditioner can be stored before entering defrosting mode, for example, compressor operation frequency
The parameters such as rate, target temperature, wind deflector angle and indoor fan revolving speed.
Since when just exiting defrosting mode, the temperature of indoor heat exchanger is in relatively low state, if immediately
Mode before the status adjustment of indoor fan and wind deflector is arrived, the cold wind that may cause blowout bring discomfort to user
Sense, therefore, can be with the temperature of real-time detection indoor heat exchanger, when the temperature of indoor heat exchanger is greater than after exiting defrosting mode
When the first preset temperature, mode before the status adjustment of indoor fan and wind deflector is arrived, with the operating parameter before defrosting
It continues to run.It in other examples, can also be after exiting defrosting mode, with the gradually liter of the temperature of indoor heat exchanger
Height gradually restores the revolving speed of indoor fan from small to large to the revolving speed of user setting, by the air outlet angle of wind deflector by as low as
It is big to restore to the angle of user setting.
The defrosting control method for the air conditioner that the present embodiment proposes, after exiting defrosting mode and restoring heating mode, root
According to the rising of indoor heat exchanger temperature, the revolving speed of indoor fan is gradually restored into the revolving speed to defrosting, by the outlet air of wind deflector
Angle restores the air outlet angle to defrosting, blows user to avoid the cold wind of air outlet of indoor set, influences the comfortable of air conditioner
Property.
The present invention also proposes a kind of defrosting control device of air conditioner.
It is the functional block diagram of the defrosting control device first embodiment of the air condition of that present invention referring to shown in Fig. 4.
In this embodiment, the defrosting control device of the air conditioner includes:
Obtain module 60, for the air conditioner outdoor heat exchanger defrosting during, in real time or timing acquisition described in
The temperature of the indoor heat exchanger of air conditioner.
It should be noted that the defrosting control device for the air conditioner that the present embodiment proposes is suitable for the sky with heat-production functions
Adjust device, such as heat pump air conditioner.Wherein, defrosting control device can be the controller that portion in the air conditioner is arranged, and be also possible to
Independent controlling terminal, such as the mobile terminals such as mobile phone, tablet computer of communication can be established with air conditioner, by air conditioner
Control of the control instruction realization to air conditioner is sent, and receives the data of air conditioner transmission.
In following embodiment, by taking heat pump air conditioner as an example, the process of defrosting control is illustrated.
It is a kind of structural schematic diagram of heat pump air conditioner 100 according to shown in Fig. 2.The heat pump air conditioner 100 includes compressor
10, four-way valve 20, outdoor heat exchanger 30, throttle part 40, indoor heat exchanger 50, wherein it is swollen that throttle part 40 can be electronics
Swollen valve.In heating operations, the high temperature and pressure refrigerant that the exhaust outlet 11 of compressor 10 is discharged commutates air conditioner by four-way valve 20
Afterwards, flow into indoor heat exchanger 50, by the ducting system of indoor heat exchanger 50 heat lasting to indoor offer, while refrigerant from
It is condensed in indoor heat exchanger 50, temperature is declined, then flows into throttle part 40, the vapour after the decompression of throttle part 40
Liquid mixing refrigerant enters outdoor heat exchanger 30, and refrigerant evaporates in outdoor heat exchanger 30, and the low-temp low-pressure refrigerant after evaporation passes through
After four-way valve 20 commutates, the gas returning port 12 of compressor 10 is returned to, is so recycled, provides lasting heat for interior.Room in winter
In the outer lower situation of temperature, since outdoor heat exchanger 30 is used as evaporator, heat is absorbed, causes the steam in air can be in room
The surface frosting of external heat exchanger 30 forms frost layer.
Based on above-mentioned air conditioner structure, illustrate the control process of defrosting below:
When outdoor heat exchanger frosting, need to defrost for outdoor heat exchanger, if may cause air conditioner without defrosting in time
It shuts down, or can not normally start in use next time, therefore, can be passed through by user as remote controler equal controller touches manually
Hair defrosting instruction, defrosts, or setting automatic detecting machine system, air conditioner judge automatically whether defrost.
When the frosting of outdoor heat exchanger surface, the temperature of outdoor heat exchanger outlet will lead to lower than the temperature under normal heating mode
Degree, therefore the outlet temperature that temperature-detecting device detects the outdoor heat exchanger, example can be set in the outlet of outdoor heat exchanger
Such as temperature sensing package.The control device of the embodiment further include: detection module, in the heating process of air conditioner, timing
Or the outlet temperature of the outdoor heat exchanger detected is obtained in real time；Judgment module detects that the outlet temperature is low for working as
When preset temperature, determine that the outdoor heat exchanger defrosts.
When detecting that outdoor heat exchanger is defrosted, close compressor, and outdoor fan is closed, switch four-way
Valve makes the high temperature and pressure refrigerant in compressor flow into outdoor heat exchanger, and control air conditioner enters refrigeration mode operation, at this point, being
The working frequency of compressor can be increased, keep it big by realization quick defrost by the aperture regulation of electric expansion valve to maximum
Working frequency when air conditioner heat-production mode operation.When detection module detects outlet temperature lower than preset temperature, judgement
Module determines that outdoor heat exchanger defrosts.Above-mentioned preset temperature, can be by user according to the actual use ring of air conditioner
Situations such as border, is configured.
Since air conditioner is operation heating mode before entering defrosting mode, indoor fan is in the open state, with
Certain rotary speed working, and wind deflector has certain air outlet angle, wherein the revolving speed of indoor fan and the outlet air angle of wind deflector
It spends related with the air conditioner operating parameter of user setting.And the air outlet temperature of air conditioner room unit and indoor heat exchanger temperature phase
It closes, the temperature of indoor heat exchanger is higher, then the air temperature of air outlet blowout is higher.
When air conditioner enters defrosting mode, the revolving speed of indoor fan and the air outlet angle of wind deflector are continued to work as
Preceding state operation.Since air conditioner is in heating operation, the temperature of indoor unit is higher, and pressure is big, when switching to defrosting mould
After formula, the revolving speed of indoor fan and the air outlet angle of wind deflector continue to run with current state, can be by indoor unit
Heat distribute, avoid the occurrence of pressure imbalance and compressor start caused to fail.
During the defrosting of the outdoor heat exchanger of air conditioner, indoor heat exchanger absorbs heat, therefore, room as evaporator
The coil temperature of interior heat exchanger can gradually decrease, obtain module 60 in real time or timing acquisition indoor heat exchanger temperature.About
The acquisition of the temperature of indoor heat exchanger setting temperature detection can fill in the middle part of the coil pipe of heat exchanger indoors in one embodiment
It sets, such as temperature sensing package, obtains temperature of the temperature that acquisition temperature sensing package detects in real time of module 60 as indoor heat exchanger；Alternatively,
In another embodiment, temperature-detecting device is set in the entrance of coil pipe, middle part, exit respectively, obtains module 60 and obtains this
The average value for the temperature that a little temperature-detecting devices detect, the temperature as indoor heat exchanger.
Control module 70, for adjusting the revolving speed and/or wind deflector of indoor fan according to the temperature of the indoor heat exchanger
Air outlet angle, wherein the temperature of the indoor heat exchanger is lower, smaller, the described wind deflector of the revolving speed of the indoor fan
Air outlet angle is smaller.
During defrosting, the temperature for obtaining the indoor heat exchanger that module 60 is got can be gradually reduced, at this point, if room
Inner blower still according to current revolving speed or wind deflector still according to current air outlet angle, may result in user blow to it is cold
Therefore wind in order to avoid such case, the case where control module 70 declines according to the temperature of indoor heat exchanger, gradually decreases room
The revolving speed of inner blower, while reducing the air outlet angle of wind deflector.
About the adjusting of indoor fan revolving speed, in one embodiment, control module 70 is also used to described when getting
When the temperature of indoor heat exchanger is greater than the second preset temperature, the temperature of the indoor heat exchanger the first preset temperature of every decline is poor,
The current rotating speed of the indoor fan is reduced into preset rotation speed value.When the normal heating operation of air conditioner, the temperature of indoor heat exchanger
Degree will be typically higher than human body temperature, reach 40-50 DEG C, or even can be higher than 50 DEG C, and with the progress of defrosting, which can be by
It gradually reduces, when being lower than human body temperature, sense of discomfort can be brought to user, above-mentioned first preset temperature difference and preset rotation speed value can be with
It is set as needed by user, for example, the first preset temperature difference can be 3-5 DEG C, preset rotation speed value can be 80-120r/
Min, the temperature of indoor heat exchanger is every to reduce by 5 DEG C, and indoor fan is reduced 100r/ on the basis of current rotating speed by control module 70
Min, until revolving speed is reduced to zero.
It in other embodiments, can be using other regulative modes, for example, rotation speed of fan and indoor heat exchanger indoors
Linear relationship is established between temperature, with gradually decreasing for indoor heat exchanger temperature, control module 70 reduces indoor wind in real time
The revolving speed of machine.So that the ratio between the temperature and indoor fan of indoor heat exchanger remains unchanged, until indoor fan revolving speed subtracts
As low as zero.
It should be noted that when the temperature of indoor heat exchanger is down to too low, even if indoor fan is transported with lesser revolving speed
Row, may still can bring sense of discomfort to user, therefore, further, above-mentioned regulative mode is based on, when the temperature of indoor heat exchanger
When degree is lower than the second preset temperature, control module 70 directly closes indoor fan, wherein the value of the second preset temperature can by with
Family is set as needed, such as 20 DEG C.
About the regulative mode of wind deflector angle, in one embodiment, control module 70, be also used to get is described
The temperature of indoor heat exchanger the second preset temperature of every decline is poor, by the reduction predetermined angle of the current air outlet angle of the wind deflector
Value, until the current air outlet angle of the wind deflector is zero, wherein preset angle angle value can be set as needed by user.Example
Such as, 5 DEG C can be reduced so that the temperature of indoor heat exchanger is every, control module 70 subtracts the angle of wind deflector on the basis of current angular
It is 5 degree small, until being decreased to zero degree.
Further, when the current air outlet angle of the wind deflector is zero, and the revolving speed of the indoor ventilating fan is not
When being zero, control module 70 controls indoor fan and closes.It in other embodiments, can air outlet angle in wind deflector and interior
Linear relationship is established between heat exchange temperature, with gradually decreasing for indoor heat exchanger temperature, control module 70 reduces in real time to be led
The air outlet angle of aerofoil, so that the ratio between the temperature of indoor heat exchanger and the air outlet angle of wind deflector remains unchanged, until
Air outlet angle is decreased to zero, i.e. wind deflector completely closes.
The defrosting control device for the air conditioner that the present embodiment proposes, during the outdoor heat exchanger defrosting of air conditioner,
Air conditioner runs refrigeration mode, and indoor heat exchanger with defrosting can gradually decrease as evaporator, temperature, therefore,
During defrosting, real-time or timing acquisition indoor heat exchanger temperature adjusts indoor wind according to the temperature of indoor heat exchanger
The revolving speed of machine and/or the air outlet angle of wind deflector reduce indoor unit with the decline of the temperature of the indoor heat exchanger got
Revolving speed reduces the wind speed of air outlet of indoor set, and/or reduces the air outlet angle of wind deflector, and cold wind is avoided to blow to user；And
And when being converted to defrosting mode by heating mode due to air conditioner, the temperature of indoor heat exchanger is higher, keeps indoor wind at this time
Machine is in the open state, can distribute heat, keeps the pressure balance of air-conditioning system, compressor is normally opened
It is dynamic to defrost.
The second embodiment of the defrosting control device of the air condition of that present invention is proposed based on first embodiment.In the present embodiment
In, module 60 is obtained, is also used to after the air conditioner exits defrosting mode and recovery to heating mode, real-time or timing acquisition
The temperature of the indoor heat exchanger；
Control module 70 is also used to when the temperature for getting the indoor heat exchanger is greater than the first preset temperature, by institute
The revolving speed for stating indoor fan restores the revolving speed to defrosting, and the air outlet angle of the wind deflector is restored to the outlet air to defrosting
Angle.
After air conditioner exits defrosting mode, it can restore to heating mode, with the operating parameter for the preceding user setting that defrosts
Continue to heat, wherein the operating parameter of air conditioner can be stored before entering defrosting mode, for example, compressor operation frequency
The parameters such as rate, target temperature, wind deflector angle and indoor fan revolving speed.
Since when just exiting defrosting mode, the temperature of indoor heat exchanger is in relatively low state, if immediately
Mode before the status adjustment of indoor fan and wind deflector is arrived, the cold wind that may cause blowout bring discomfort to user
Sense, therefore, after exiting defrosting mode, detection module can be with the temperature of real-time detection indoor heat exchanger, when indoor heat exchanger
Temperature be greater than the first preset temperature when, control module 70 status adjustment of indoor fan and wind deflector is arrived before mode,
It is continued to run with the operating parameter before defrosting.It in other examples, can also be after exiting defrosting mode, as interior is changed
The temperature of hot device gradually rises, and the revolving speed of indoor fan gradually is restored from small to large to user setting to turn by control module 70
Speed restores the air outlet angle of wind deflector from small to large to the angle of user setting.
The defrosting control device for the air conditioner that the present embodiment proposes, after exiting defrosting mode and restoring heating mode, root
According to the rising of indoor heat exchanger temperature, the revolving speed of indoor fan is gradually restored into the revolving speed to defrosting, by the outlet air of wind deflector
Angle restores the air outlet angle to defrosting, blows user to avoid the cold wind of air outlet of indoor set, influences the comfortable of air conditioner
Property.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
In addition, the description of " first ", " second ", " third " etc. involved in invention only describes purpose, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Occur it is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also not the present invention claims
Within protection scope.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of defrosting control method of air conditioner, which is characterized in that the defrosting control method of the air conditioner includes:
During the defrosting of the outdoor heat exchanger of the air conditioner, the indoor heat exchanger of air conditioner described in real-time or timing acquisition
Temperature；
The revolving speed of indoor fan and/or the air outlet angle of wind deflector are adjusted according to the temperature of the indoor heat exchanger, wherein work as institute
When stating the temperature of indoor heat exchanger greater than the second preset temperature, the temperature of the indoor heat exchanger the first preset temperature of every decline
The current rotating speed of the indoor fan is reduced preset rotation speed value, the every decline of the temperature of the indoor heat exchanger got by difference
Second preset temperature is poor, by the reduction preset angle angle value of the current air outlet angle of the wind deflector.
2. the defrosting control method of air conditioner according to claim 1, which is characterized in that the defrosting of the air conditioner controls
Method further comprises the steps of:
After the air conditioner exits defrosting mode and recovery to heating mode, indoor heat exchanger described in real-time or timing acquisition
Temperature；
When get the indoor heat exchanger temperature be greater than the first preset temperature when, by the revolving speed of the indoor fan restore to
Revolving speed before defrosting, and the air outlet angle of the wind deflector is restored to the air outlet angle to defrosting.
3. the defrosting control method of air conditioner according to claim 1 or 2, which is characterized in that described according to the interior
Heat exchanger temperature adjustment indoor fan revolving speed the step of include:
When the temperature of the indoor heat exchanger got is greater than the second preset temperature, under the temperature of the indoor heat exchanger is every
It drops that the first preset temperature is poor, the current rotating speed of the indoor fan is reduced into preset rotation speed value；
When the temperature of the indoor heat exchanger got is less than or equal to second preset temperature, the indoor wind is controlled
Organ closes.
4. the defrosting control method of air conditioner according to claim 1 or 2, which is characterized in that described according to the interior
Heat exchanger temperature adjustment wind deflector air outlet angle the step of include:
The temperature of the indoor heat exchanger got the second preset temperature of every decline is poor, by the current outlet air angle of the wind deflector
The reduction preset angle angle value of degree, until the current air outlet angle of the wind deflector is zero.
5. the defrosting control method of air conditioner according to claim 4, which is characterized in that described according to the indoor heat exchange
Device temperature adjustment wind deflector air outlet angle the step of include:
When the current air outlet angle of the wind deflector is zero, and the revolving speed of the indoor fan is not zero, described in control
Indoor fan is closed.
6. a kind of defrosting control device of air conditioner, which is characterized in that the defrosting control device of the air conditioner includes:
Obtain module, for the air conditioner outdoor heat exchanger defrosting during, in real time or timing acquisition described in air conditioner
Indoor heat exchanger temperature；
Control module, the outlet air of revolving speed and/or wind deflector for adjusting indoor fan according to the temperature of the indoor heat exchanger
Angle, wherein when the temperature of the indoor heat exchanger is greater than the second preset temperature, the every decline of the temperature of the indoor heat exchanger
First preset temperature is poor, and the current rotating speed of the indoor fan is reduced preset rotation speed value, the indoor heat exchanger got
Temperature the second preset temperature of every decline it is poor, by the reduction preset angle angle value of the current air outlet angle of the wind deflector.
7. the defrosting control device of air conditioner according to claim 6, which is characterized in that the acquisition module is also used to
After the air conditioner exits defrosting mode and recovery to heating mode, the temperature of indoor heat exchanger described in real-time or timing acquisition
Degree；
The control module is also used to when the temperature for getting the indoor heat exchanger is greater than the first preset temperature, will be described
The revolving speed of indoor fan restores the revolving speed to defrosting, and the air outlet angle of the wind deflector is restored to the outlet air angle to defrosting
Degree.
8. the defrosting control device of air conditioner according to claim 6 or 7, which is characterized in that the control module is also used
In when the temperature of the indoor heat exchanger got be greater than the second preset temperature when, the every decline of the temperature of the indoor heat exchanger
First preset temperature is poor, and the current rotating speed of the indoor fan is reduced preset rotation speed value；
And when the temperature of the indoor heat exchanger got is less than or equal to second preset temperature, described in control
Indoor fan is closed.
9. the defrosting control device of air conditioner according to claim 6 or 7, which is characterized in that the control module is also used
It is poor in the temperature of the indoor heat exchanger got the second preset temperature of every decline, by the current air outlet angle of the wind deflector
Reduction preset angle angle value, until the current air outlet angle of the wind deflector is zero.
10. the defrosting control device of air conditioner according to claim 9, which is characterized in that the control module is also used to
When the current air outlet angle of the wind deflector is zero, and the revolving speed of the indoor fan is not zero, the interior is controlled
Blower is closed.
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| CN201610375031.4A CN105972772B (en) | 2016-05-30 | 2016-05-30 | The defrosting control method and device of air conditioner |
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| CN201610375031.4A CN105972772B (en) | 2016-05-30 | 2016-05-30 | The defrosting control method and device of air conditioner |
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