CN106091260A - Air-conditioner and defrosting control method thereof - Google Patents
Air-conditioner and defrosting control method thereof Download PDFInfo
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- CN106091260A CN106091260A CN201610435824.0A CN201610435824A CN106091260A CN 106091260 A CN106091260 A CN 106091260A CN 201610435824 A CN201610435824 A CN 201610435824A CN 106091260 A CN106091260 A CN 106091260A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioner and defrosting control method thereof, said method comprising the steps of: before air-conditioner enters defrost pattern and performs defrost action, compressor is carried out refrigerant recovering control, and controls the second control valve closedown, so that air-conditioner enters the first refrigerant recovering process；Judge that whether the Guan Wen of vaporizer is less than or equal to the first preset temperature；If the Guan Wen of vaporizer is less than or equal to the first preset temperature, then controls the first control valve and close, and control compressor closedown, and control cross valve power down commutation；After time delay the first Preset Time, control the first control valve and the second control valve and open with scheduled rate, and control compressor unlatching, so that air-conditioner starts to perform defrost action.The method is before air-conditioner performs defrost action, by refrigerant recovering to compressor side, and when system pressure reaches balance, controls cross valve commutation, thus avoids carrying out commutation when system pressure imbalance and produce noise incoming indoor.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to defrosting control method and a kind of air-conditioning of a kind of air-conditioner
Device.
Background technology
Air-conditioner is after heating operation a period of time, and off-premises station there will be frost, thus causes heating of air-conditioner
Effect is deteriorated.
In order to ensure follow-up heating effect, air-conditioner, when reaching certain condition, will produce a defrost process.At this
During, have situations below and cause the uncomfortable sensation of user: defrost process start and at the end of compressor can shut down, four-way
Valve commutates rapidly, and now uneven due to system pressure, will produce the incoming indoor of sound of ear-piercing " giving a tongue-lashing ".
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the present invention
One purpose is to propose the defrosting control method of a kind of air-conditioner, and the method enters defrost pattern at air-conditioner and performs defrost
Before action, by refrigerant recovering to compressor side, and when system pressure reaches balance, control cross valve commutation, thus effectively keep away
Exempt to carry out commutation when system pressure imbalance and produce noise incoming indoor.
Further object is that a kind of air-conditioner of proposition.
For achieving the above object, one aspect of the present invention embodiment proposes the defrosting control method of a kind of air-conditioner, described
Air-conditioner includes compressor, cross valve, condenser, vaporizer, indoor fan, throttle part and electricity auxiliary heating apparatus, described compressor
Air vent be connected with the first end of described cross valve, the second end of described cross valve and described condenser, described throttle part,
Together with described vaporizer is sequentially connected in series with the 4th end of described cross valve, the 3rd end of described cross valve and described compressor
Gas returning port be connected, is connected between described condenser with described throttle part and has the first control valve, the 4th end of described cross valve and
Connecting between described vaporizer and have the second control valve, described indoor fan is arranged with the described electricity corresponding described vaporizer of auxiliary heating apparatus,
Described defrosting control method comprises the following steps: before described air-conditioner enters defrost pattern and performs defrost action, to described
Compressor carries out refrigerant recovering control, and controls described second control valve closedown, so that described air-conditioner enters the first coolant and returns
Receipts process；Judge that whether the Guan Wen of described vaporizer is less than or equal to the first preset temperature；If the Guan Wen of described vaporizer is less than
Equal to described first preset temperature, then control described first control valve and close, and control the closedown of described compressor, and control institute
State cross valve power down commutation；And after time delay the first Preset Time, control described first control valve and described second control valve with
Scheduled rate is opened, and controls the unlatching of described compressor, so that described air-conditioner starts to perform defrost action.
The defrosting control method of air-conditioner according to embodiments of the present invention, enters defrost pattern at air-conditioner and performs defrost
Before action, compressor is carried out refrigerant recovering control, and controls the second control valve closedown, so that air-conditioner enters the first coolant and returns
Receipts process, then judges whether the Guan Wen of vaporizer is less than or equal to the first preset temperature, if the Guan Wen of vaporizer is less than or equal to
First preset temperature, then control the first control valve and close, and controls compressor closedown, and controls cross valve power down commutation, prolongs
Time the first Preset Time after, control the first control valve and the second control valve with scheduled rate open, and control compressor open, with
Air-conditioner is made to start to perform defrost action.Coolant, before air-conditioner enters defrost pattern and performs defrost action, is returned by the method
Receive to compressor side, and when system pressure reaches balance, control cross valve commutation, thus be prevented effectively from system pressure uneven
Carry out commutation during weighing apparatus and produce noise incoming indoor, improve the Experience Degree of air-conditioner.
According to one embodiment of present invention, the defrosting control method of above-mentioned air-conditioner, also include: at described air-conditioner
During performing defrost action, it is judged that whether the Guan Wen of described condenser is more than or equal to the second preset temperature；If it is described cold
The Guan Wen of condenser is more than or equal to described second preset temperature, then described compressor carries out refrigerant recovering control, and controls described
First control valve is closed, so that described air-conditioner enters the second refrigerant recovering process；Judge that the Guan Wen of described vaporizer is the biggest
In equal to the 3rd preset temperature；If the Guan Wen of described vaporizer more than or equal to described 3rd preset temperature, then controls described the
Two control valves are closed, and control the closedown of described compressor；After time delay the second Preset Time, control described first control valve and described
Second control valve is opened with described scheduled rate, and controls described cross valve and power on commutation, and controls described compressor and open,
So that described air-conditioner runs with heating mode.
According to one embodiment of present invention, after described air-conditioner runs with heating mode, if described vaporizer
Guan Wen is more than or equal to described 4th preset temperature, then judge that the defrost process of described air-conditioner is fully completed.
According to one embodiment of present invention, after described air-conditioner enters defrost pattern, also control described electricity auxiliary heating apparatus
Open, and control described indoor fan with preset gear operation.
According to one embodiment of present invention, when described compressor is frequency-changeable compressor, described compressor is carried out cold
Matchmaker reclaims control, runs specifically, control described frequency-changeable compressor with default refrigerant recovering frequency；When described compressor is fixed
Frequently during compressor, described compressor is carried out refrigerant recovering control, specifically, control described compressor to keep current rotating speed fortune
OK.
For achieving the above object, another aspect of the present invention embodiment proposes a kind of air-conditioner, including: compressor, four-way
Valve, condenser, vaporizer, indoor fan, throttle part, electricity auxiliary heating apparatus and control module, wherein, the air vent of described compressor
It is connected with the first end of described cross valve, the second end of described cross valve and described condenser, described throttle part, described evaporation
Together with device is sequentially connected in series with the 4th end of described cross valve, the 3rd end of described cross valve and the gas returning port phase of described compressor
Even, it is connected between described condenser with described throttle part and has the first control valve, the 4th end of described cross valve and described evaporation
Connecting between device and have the second control valve, described indoor fan is arranged with the described electricity corresponding described vaporizer of auxiliary heating apparatus；Described control
Module, before entering defrost pattern at described air-conditioner and perform defrost action, carries out refrigerant recovering control to described compressor
System, and control described second control valve closedown, so that described air-conditioner enters the first refrigerant recovering process, described control module is sentenced
Whether the Guan Wen of disconnected described vaporizer is less than or equal to the first preset temperature, and judging that the Guan Wen of described vaporizer is less than or equal to institute
Control described first control valve when stating the first preset temperature to close, and control the closedown of described compressor, and control described four-way
Valve power down commutates, and after time delay the first Preset Time, described control module controls described first control valve and described second control valve
Open with scheduled rate, and control the unlatching of described compressor, so that described air-conditioner starts to perform defrost action.
Air-conditioner according to embodiments of the present invention, control module enters defrost pattern at air-conditioner and performs defrost action
Before, compressor is carried out refrigerant recovering control, and controls the second control valve closedown, so that air-conditioner enters the first refrigerant recovering mistake
Journey, then, control module controls the first control valve when the Guan Wen judging vaporizer is less than or equal to the first preset temperature and closes, and
Controlling compressor to close, and control cross valve power down commutation, after time delay the first Preset Time, control module controls the first control
Valve and the second control valve are opened with scheduled rate, and control compressor unlatching, so that air-conditioner starts to perform defrost action.This sky
Adjust device before entering defrost pattern and performing defrost action, by refrigerant recovering to compressor side, and reach balance at system pressure
Time, control cross valve commutation, thus be prevented effectively from when system pressure imbalance and carry out commutation generation noise incoming indoor, carry
High Experience Degree.
According to one embodiment of present invention, during described air-conditioner performs defrost action, described control module
Also judge whether the Guan Wen of described condenser is more than or equal to the second preset temperature, if the Guan Wen of described condenser is more than or equal to institute
Stating the second preset temperature, described control module then carries out refrigerant recovering control to described compressor, and controls described first control
Valve cuts out, so that described air-conditioner enters the second refrigerant recovering process, described control module judges that the Guan Wen of described vaporizer is
No the 3rd preset temperature that is more than or equal to, and when the Guan Wen of described vaporizer is more than or equal to described three preset temperature, control institute
Stating the second control valve to close, and control the closedown of described compressor, after time delay the second Preset Time, described control module controls described
First control valve and described second control valve are opened with described scheduled rate, and control described cross valve and power on commutation, and control
Make described compressor to open, so that described air-conditioner runs with heating mode.
According to one embodiment of present invention, after described air-conditioner runs with heating mode, if described vaporizer
Guan Wen is more than or equal to described 4th preset temperature, and described control module then judges that the defrost process of described air-conditioner is fully completed.
According to one embodiment of present invention, after described air-conditioner enters defrost pattern, described control module also controls
Described electricity auxiliary heating apparatus is opened, and controls described indoor fan with preset gear operation.
According to one embodiment of present invention, when described compressor is frequency-changeable compressor, described control module is to described
Compressor carries out refrigerant recovering control, specifically, described control module controls described frequency-changeable compressor with default refrigerant recovering
Frequency is run；When described compressor is invariable frequency compressor, described control module carries out refrigerant recovering control to described compressor,
Current rotating speed is kept to run specifically, described control module controls described compressor.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-conditioner according to an embodiment of the invention.
Fig. 2 is the flow chart of the defrosting control method of air-conditioner according to embodiments of the present invention.
Fig. 3 is the flow chart of the defrosting control method of air-conditioner according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
The air-conditioner and defrosting control method thereof proposed according to embodiments of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the structural representation of air-conditioner according to an embodiment of the invention.As it is shown in figure 1, this air-conditioner includes:
Compressor 1, cross valve 2, condenser 3, vaporizer 4, indoor fan 5, throttle part 6, electricity auxiliary heating apparatus 7 and control module are (in figure
Not specifically illustrated).
Wherein, the air vent of compressor 1 is connected with the first end of cross valve 2, the second end of cross valve 2 and condenser 3, joint
Together with stream unit 6, vaporizer 4 are sequentially connected in series with the 4th end of cross valve 2, the 3rd end of cross valve 2 and the return-air of compressor 1
Mouth is connected, and is connected and has the first control valve 8, connect between the 4th end and the vaporizer 4 of cross valve 2 between condenser 3 with throttle part 6
It is connected to the second control valve 9, indoor fan 5 and the corresponding vaporizer 4 of electricity auxiliary heating apparatus 7 arrange.First control valve 8 and the second control valve 9
Can be two-way valve, throttle part 6 can be electric expansion valve.
Control module, before entering defrost pattern at air-conditioner and perform defrost action, carries out coolant to compressor 1 and returns
Receiving and control, and control the second control valve 9 and close, so that air-conditioner enters the first refrigerant recovering process, control module judges evaporation
Whether the Guan Wen of device 4 is less than or equal to the first preset temperature, and when the Guan Wen judging vaporizer 4 is less than or equal to the first preset temperature
Control the first control valve 8 to close, and control compressor 1 and close, and control cross valve 2 power down commutation, when time delay first is preset
After between, control module controls the first control valve 8 and the second control valve 9 and opens with scheduled rate, and controls compressor 1 and open, with
Air-conditioner is made to start to perform defrost action.Wherein, the first preset temperature, the first Preset Time and scheduled rate can be according to reality
Situation is demarcated, and the parameter corresponding to different types is different.
In an embodiment of the present invention, when compressor 1 is frequency-changeable compressor, control module carries out coolant to compressor 1
Reclaim and control, run with default refrigerant recovering frequency specifically, control module controls frequency-changeable compressor；When compressor 1 is fixed
Frequently during compressor, control module carries out refrigerant recovering control to compressor 1, keeps working as specifically, control module controls compressor 1
Front rotating speed runs.Wherein, refrigerant recovering frequency can be demarcated according to practical situation.
Specifically, as it is shown in figure 1, when compressor 1 is frequency-changeable compressor, when air-conditioner enters defrost pattern, control
Module controls compressor 1 and runs with default refrigerant recovering frequency (or claiming to receive fluorine frequency), and controls the second control valve 9 and close,
Air-conditioner enters the first refrigerant recovering process, and the coolant in vaporizer 4 is gradually retracted to outdoor pusher side.Along with in vaporizer 4
The minimizing of coolant, the Guan Wen of vaporizer 4 is also gradually reduced, when the Guan Wen of vaporizer 4 reaches the first preset temperature, control module
Control the first control valve 8 to close, and control compressor 1 and close, and control cross valve 2 power-off and commutate.During time delay one section
After between, system pressure reaches stable, then secondary control the first control valve 8 and the second control valve 9 are slowly opened, and control compressor simultaneously
1 opens, and air-conditioner starts to perform defrost action.Owing to, before air-conditioner enters defrost pattern and performs defrost action, controlling mould
Refrigerant recovering to outdoor pusher side, and when system pressure reaches balance, is controlled cross valve commutation by block, thus is prevented effectively from and is being
Carry out commutation during system pressure imbalance and produce noise incoming indoor, bring bad experience to user.
According to one embodiment of present invention, after air-conditioner enters defrost pattern, control module also controls electricity auxiliary heating apparatus 7
Open, and control room inner blower 5 runs with preset gear.
Wherein, preset gear can be demarcated according to practical situation.When the gear of indoor fan 5 arranges reasonable,
During one refrigerant recovering, although the coolant in vaporizer 4 gradually decreases, the Guan Wen of vaporizer 4 is gradually reduced, but owing to electricity is auxiliary
Hot device 7 and the cooperation of indoor fan 5, it is ensured that indoor temperature is substantially without reduction, thus ensure that the heating effect of system,
Ensure that the comfort level of user.
According to one embodiment of present invention, during air-conditioner performs defrost action, control module also judges cold
Whether the Guan Wen of condenser 3 is more than or equal to the second preset temperature, if the Guan Wen of condenser 3 is more than or equal to the second preset temperature, control
Molding block then carries out refrigerant recovering control to compressor 1, and controls the first control valve 8 and close so that air-conditioner to enter second cold
Matchmaker's removal process, control module judges whether the Guan Wen of vaporizer 4 is more than or equal to the 3rd preset temperature, and at the pipe of vaporizer 4
When temperature is more than or equal to three preset temperatures, controls the second control valve 9 and close, and control compressor 1 and close, when time delay second is preset
After between, control module controls the first control valve 8 and the second control valve 9 and opens with scheduled rate, and controls cross valve 2 and power on and change
To, and control compressor 1 open so that air-conditioner with heating mode run.Wherein, the second preset temperature, the 3rd default temperature
Degree and the second Preset Time can be demarcated according to practical situation.
Specifically, as it is shown in figure 1, after air-conditioner starts to perform defrost action, from the air vent of compressor 1 out cold
Matchmaker enters in condenser 3 after cross valve 2 and carries out heat exchange, to remove the frost on condenser 3.During defrosting, control module
Detect the Guan Wen of condenser 3 in real time, and it is judged.When the Guan Wen of condenser 3 reaches the second preset temperature, show cold
Frost on condenser 3 has removed, and now, if compressor 1 is frequency-changeable compressor, then control module controls compressor 1 with default cold
Matchmaker reclaims frequency and runs, and controls the first control valve 8 and close, and air-conditioner enters the second refrigerant recovering process.In refrigerant recovering mistake
Cheng Zhong, control module obtains the Guan Wen of vaporizer 4 in real time, and judges whether the Guan Wen of vaporizer 4 reaches the 3rd preset temperature.When
When the Guan Wen of vaporizer 4 reaches three preset temperatures, control module controls the second control valve 9 and closes, and controls compressor 1 and close
Close.After time delay a period of time, system pressure reaches stable, and control module secondary control the first control valve 8 and the second control valve 9 again are delayed
Slow opening, cross valve 2 powers on commutation simultaneously, and compressor 1 is opened, and air-conditioner brings into operation with heating mode.
Owing to, after condenser 3 defrosting terminates, control module is first by the most outdoor for refrigerant recovering pusher side, and reaches at system pressure
During to balance, control cross valve 2 and commutate, thus be prevented effectively from when system pressure imbalance and carry out commutation and produce noise incoming
Indoor, bring bad experience to user.
Furthermore, it is contemplated that defrost process is a process of refrigerastion, close even if correlation technique controls indoor fan when defrost
Close, but owing to now air-conditioner can not be to indoor offer heat, and vaporizer also to indoor radiation cold, thus can be able to cause
The warmest indoor allow people feel, and temperature reduces much.To this end, in performing defrost course of action, control module also controls
Electricity auxiliary heating apparatus 7 is opened, and control room inner blower 5 runs with preset gear, thus during ensureing defrost indoor temperature is not the most
Can reduce, it is ensured that the heating effect of air-conditioner, it is ensured that the comfort level of user.
Further, after air-conditioner runs with heating mode, if the Guan Wen of vaporizer 4 presets temperature more than or equal to the 4th
Degree, control module then judges that the defrost process of air-conditioner is fully completed, now can be according to the normal rule that controls to controlling electricity
Auxiliary heating apparatus 7 and indoor fan 5 are controlled, and wherein, the 4th Preset Time can be demarcated according to practical situation.
Specifically, after defrost terminates, although air-conditioner has begun to run with heating mode, but vaporizer now
The Guan Wen ratio of 4 is relatively low, if electricity auxiliary heating apparatus 7 and indoor fan 5 run according to the normal rule that controls, then there will be under indoor temperature
The situation of fall, therefore, after air-conditioner runs with heating mode, when the Guan Wen judging vaporizer 4 presets warm more than or equal to the 4th
When spending, just thinking that the defrost process of air-conditioner is fully completed, now air-conditioner runs according to normal heating mode, thus enters one
Step ensure that the heating effect of air-conditioner, it is ensured that the comfort level of user.
So that those skilled in the art can more clearly understand the present invention, one below in conjunction with the present invention concrete
Example further illustrates.As it is shown on figure 3, the defrosting control process of this air-conditioner comprises the following steps:
S101, it is determined that when air-conditioner reaches defrost condition, enters defrost process.
S102, frequency-changeable compressor is tuned to receive fluorine frequency (invariable frequency compressor keeps current rotating speed).
S103, electricity auxiliary heating apparatus unlatching, indoor fan is always maintained at this shape during being adjusted to suitable gear, and whole defrost
State.
S104, the second control valve closedown, air-conditioning enters refrigerant recovering process.
S105, the Guan Wen of vaporizer reach the first preset temperature t1.
S106, the first control valve closedown, compressor closedown, cross valve power-off, complete commutation.
S107, after time delay the first Preset Time, system pressure is stable.
S108, the first control valve and the second control valve are slowly opened, and compressor is opened, and start defrost.
S109, the Guan Wen of condenser reach warm second preset temperature t2.
S110, frequency-changeable compressor is tuned to receive fluorine frequency (invariable frequency compressor machine keeps current rotating speed).
S111, the first control valve closedown, air-conditioning enters refrigerant recovering process.
S112, the Guan Wen of vaporizer reach the 3rd preset temperature.
S113, the second control valve closedown, compressor is closed.
S114, after time delay the second Preset Time, system pressure is stable.
S115, the first control valve and the second control valve are slowly opened, and cross valve powers on, to realize commutation.
S116, opens heating mode, and after the Guan Wen of vaporizer reaches the 4th preset temperature t4, defrost process is tied completely
Bundle, electricity auxiliary heating apparatus and indoor fan run according to controlling rule.
In sum, the air-conditioner of the embodiment of the present invention, after entering defrost pattern, when cross valve is commutated by needs
Time, first by refrigerant recovering to outdoor pusher side, and when system pressure stablize, control cross valve and commutate, thus be prevented effectively from and be
Carry out commutation during system pressure imbalance and produce noise incoming indoor, affect Consumer's Experience.Further, after entering defrost pattern,
Also control electricity auxiliary heating apparatus to open, and control room inner blower operate with preset gear, thus ensure that indoor temperature is basically unchanged, it is ensured that
The heating effect of air-conditioner, improves users'comfort and experiences.
Fig. 2 is the flow chart of the defrosting control method of air-conditioner according to embodiments of the present invention.
As it is shown in figure 1, air-conditioner includes compressor, cross valve, condenser, vaporizer, indoor fan, throttle part and electricity
Auxiliary heating apparatus, the air vent of compressor is connected with the first end of cross valve, the second end of cross valve and condenser, throttle part, steaming
Sending out together with device is sequentially connected in series with the 4th end of cross valve, the 3rd end of cross valve is connected with the gas returning port of compressor, condenser
Being connected with between throttle part and have the first control valve, being connected between the 4th end and the vaporizer of cross valve has the second control valve, room
Inner blower is arranged with the electricity corresponding vaporizer of auxiliary heating apparatus.
As in figure 2 it is shown, the defrosting control method of this air-conditioner comprises the following steps:
S1, before air-conditioner enters defrost pattern and performs defrost action, carries out refrigerant recovering control to compressor, and controls
Make the second control valve to close, so that air-conditioner enters the first refrigerant recovering process.
In an embodiment of the present invention, when compressor is frequency-changeable compressor, compressor is carried out refrigerant recovering control, tool
Body is, controls frequency-changeable compressor and runs with default refrigerant recovering frequency；When compressor is invariable frequency compressor, compressor is entered
Row refrigerant recovering controls, and keeps current rotating speed to run specifically, control compressor.
S2, it is judged that whether the Guan Wen of vaporizer is less than or equal to the first preset temperature.
S3, if the Guan Wen of vaporizer is less than or equal to the first preset temperature, then controls the first control valve and closes, and control pressure
Contracting office closes, and controls cross valve power down commutation.
S4, after time delay the first Preset Time, controls the first control valve and the second control valve and opens with scheduled rate, and control
Compressor is opened, so that air-conditioner starts to perform defrost action.
Specifically, as it is shown in figure 1, when compressor is frequency-changeable compressor, when air-conditioner enters defrost pattern, control mould
Block controls compressor and runs with default refrigerant recovering frequency, and controls the second control valve closedown, and air-conditioner enters the first coolant
Removal process, the coolant in vaporizer is gradually retracted to outdoor pusher side.Along with the minimizing of coolant in vaporizer, the pipe of vaporizer
Temperature is also gradually reduced, and when the Guan Wen of vaporizer reaches the first preset temperature, control module controls the first control valve and closes, and controls
Compressor processed is closed, and control cross valve power-off commutates.After time delay a period of time, system pressure reaches stable, again
Controlling the first control valve and the second control valve is slowly opened, control compressor simultaneously and open, air-conditioner starts to perform defrost action.
Owing to, before air-conditioner enters defrost pattern and performs defrost action, control module is by the most outdoor for refrigerant recovering pusher side, and is being
System pressure reach balance time, control cross valve commutation, thus be prevented effectively from when system pressure imbalance carry out commutate generation make an uproar
Sound incoming indoor, bring bad experience to user.
According to one embodiment of present invention, after air-conditioner enters defrost pattern, also control electricity auxiliary heating apparatus and open, and control
Indoor fan processed runs with preset gear.
Wherein, when the gear of indoor fan arranges reasonable, during the first refrigerant recovering, although cold in vaporizer
Matchmaker gradually decreases, and the Guan Wen of vaporizer is gradually reduced, but due to electricity auxiliary heating apparatus and the cooperation of indoor fan, it is ensured that Indoor Temperature
Degree is substantially without reduction, thus ensure that the heating effect of system, it is ensured that the comfort level of user.
According to one embodiment of present invention, the defrosting control method of above-mentioned air-conditioner also includes: perform at air-conditioner
During defrost action, it is judged that whether the Guan Wen of condenser is more than or equal to the second preset temperature；If the Guan Wen great of condenser
In equal to the second preset temperature, then compressor is carried out refrigerant recovering control, and controls the first control valve closedown, so that air-conditioner
Enter the second refrigerant recovering process；Judge that whether the Guan Wen of vaporizer is more than or equal to the 3rd preset temperature；If the pipe of vaporizer
Temperature more than or equal to the 3rd preset temperature, then controls the second control valve and closes, and controls compressor closedown；Time delay the second Preset Time
After, control the first control valve and the second control valve and open with scheduled rate, and control cross valve and power on commutation, and control to compress
Machine is opened, so that air-conditioner runs with heating mode.
Specifically, as it is shown in figure 1, after air-conditioner starts to perform defrost action, from the air vent of compressor out cold
Matchmaker enters after cross valve in condenser and carries out heat exchange, to remove the frost on condenser.During defrosting, control module is real-time
The Guan Wen of detection condenser, and it is judged.When the Guan Wen of condenser reaches the second preset temperature, show on condenser
Frost removed, now, if compressor is frequency-changeable compressor, then control module control compressor with default refrigerant recovering frequency
Running, and control the first control valve closedown, air-conditioner enters the second refrigerant recovering process.During refrigerant recovering, control mould
Block obtains the Guan Wen of vaporizer in real time, and judges whether the Guan Wen of vaporizer reaches the 3rd preset temperature.Guan Wen when vaporizer
When reaching three preset temperatures, control module controls the second control valve and closes, and controls compressor closedown.Time delay a period of time
After, system pressure reaches stable, and control module secondary control the first control valve and the second control valve are more slowly opened, cross valve simultaneously
Power on commutation, and compressor is opened, and air-conditioner brings into operation with heating mode.
Owing to, after condenser defrosting terminates, control module is first by the most outdoor for refrigerant recovering pusher side, and reaches at system pressure
During to balance, control cross valve commutation, thus be prevented effectively from when system pressure imbalance and carry out commutation and produce noise incoming
Indoor, bring bad experience to user.
Furthermore, it is contemplated that defrost process is a process of refrigerastion, close even if correlation technique controls indoor fan when defrost
Close, but owing to now air-conditioner can not be to indoor offer heat, and vaporizer also to indoor radiation cold, thus can be able to cause
The warmest indoor allow people feel, and temperature reduces much.To this end, in performing defrost course of action, control module also controls
Electricity auxiliary heating apparatus open, and control room inner blower with preset gear run, thus during ensureing defrost indoor temperature substantially without
Reduce, it is ensured that the heating effect of air-conditioner, it is ensured that the comfort level of user.
Further, after air-conditioner runs with heating mode, if the Guan Wen of vaporizer presets temperature more than or equal to the 4th
Degree, then judge that the defrost process of air-conditioner is fully completed, now can according to normal control rule to control electricity auxiliary heating apparatus and
Indoor fan is controlled.
Specifically, after defrost terminates, although air-conditioner has begun to run with heating mode, but vaporizer now
Guan Wen ratio relatively low, if electricity auxiliary heating apparatus and indoor fan run according to the normal rule that controls, then there will be indoor temperature and decline
Situation, therefore, air-conditioner with heating mode run after, when judge vaporizer Guan Wen be more than or equal to the 4th preset temperature
Time, just think that the defrost process of air-conditioner is fully completed, now air-conditioner runs according to normal heating mode, thus further
Ensure that the heating effect of air-conditioner, it is ensured that the comfort level of user.
In sum, the defrosting control method of the air-conditioner of the embodiment of the present invention, after air-conditioner enters defrost pattern, when
When needing cross valve is commutated, first by the refrigerant recovering in air-conditioner to outdoor pusher side, and when system pressure is stablized, control
Cross valve processed commutates, thus is prevented effectively from when system pressure imbalance and carries out commutation generation noise incoming indoor, and impact is used
Family is experienced.Further, after air-conditioner enters defrost pattern, also control electricity auxiliary heating apparatus and open, and control room inner blower is with default shelves
Position operating, thus ensure that indoor temperature is basically unchanged, it is ensured that the heating effect of air-conditioner, improve users'comfort and experience.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the defrosting control method of an air-conditioner, it is characterised in that described air-conditioner include compressor, cross valve, condenser,
Vaporizer, indoor fan, throttle part and electricity auxiliary heating apparatus, the first end phase of the air vent of described compressor and described cross valve
Even, the second end of described cross valve and described condenser, described throttle part, described vaporizer and the 4th end of described cross valve
Being sequentially connected in series together, the 3rd end of described cross valve is connected with the gas returning port of described compressor, described condenser and described joint
Connecting between stream unit and have the first control valve, being connected between the 4th end and the described vaporizer of described cross valve has the second control
Valve, described indoor fan is arranged with the described electricity corresponding described vaporizer of auxiliary heating apparatus, and described defrosting control method comprises the following steps:
Before described air-conditioner enters defrost pattern and performs defrost action, described compressor is carried out refrigerant recovering control, and
Control described second control valve to close, so that described air-conditioner enters the first refrigerant recovering process；
Judge that whether the Guan Wen of described vaporizer is less than or equal to the first preset temperature；
If the Guan Wen of described vaporizer is less than or equal to described first preset temperature, then controls described first control valve and close, and
Control described compressor to close, and control described cross valve power down commutation；And
After time delay the first Preset Time, control described first control valve and described second control valve and open with scheduled rate, and control
Make described compressor to open, so that described air-conditioner starts to perform defrost action.
The defrosting control method of air-conditioner the most according to claim 1, it is characterised in that also include:
During described air-conditioner performs defrost action, it is judged that whether the Guan Wen of described condenser presets more than or equal to second
Temperature；
If the Guan Wen of described condenser is more than or equal to described second preset temperature, then described compressor is carried out refrigerant recovering control
System, and control described first control valve closedown, so that described air-conditioner enters the second refrigerant recovering process；
Judge that whether the Guan Wen of described vaporizer is more than or equal to the 3rd preset temperature；
If the Guan Wen of described vaporizer is more than or equal to described 3rd preset temperature, then controls described second control valve and close, and
Control described compressor to close；
After time delay the second Preset Time, control described first control valve and described second control valve opened with described scheduled rate,
And control described cross valve and power on commutation, and control described compressor and open, so that described air-conditioner runs with heating mode.
The defrosting control method of air-conditioner the most according to claim 2, it is characterised in that at described air-conditioner to heat mould
After formula is run, if the Guan Wen of described vaporizer is more than or equal to described 4th preset temperature, then judge the defrost of described air-conditioner
Process is fully completed.
The defrosting control method of air-conditioner the most according to claim 1, it is characterised in that enter defrost at described air-conditioner
After pattern, also control described electricity auxiliary heating apparatus and open, and control described indoor fan with preset gear operation.
5. according to the defrosting control method of the air-conditioner according to any one of claim 1-4, it is characterised in that wherein,
When described compressor is frequency-changeable compressor, described compressor is carried out refrigerant recovering control, specifically, control described change
Frequently compressor runs with default refrigerant recovering frequency；
When described compressor is invariable frequency compressor, described compressor is carried out refrigerant recovering control, specifically, control described pressure
Contracting machine keeps current rotating speed to run.
6. an air-conditioner, it is characterised in that including: compressor, cross valve, condenser, vaporizer, indoor fan, restriction
Part, electricity auxiliary heating apparatus and control module, wherein,
The air vent of described compressor is connected with the first end of described cross valve, the second end of described cross valve and described condensation
Together with device, described throttle part, described vaporizer are sequentially connected in series with the 4th end of described cross valve, the 3rd of described cross valve
End is connected with the gas returning port of described compressor, is connected and has the first control valve between described condenser with described throttle part, described
Being connected between 4th end and the described vaporizer of cross valve and have the second control valve, described indoor fan is corresponding with described electricity auxiliary heating apparatus
Described vaporizer is arranged；
Described compressor, before entering defrost pattern at described air-conditioner and perform defrost action, is carried out by described control module
Refrigerant recovering controls, and controls described second control valve closedown, so that described air-conditioner enters the first refrigerant recovering process, described
Control module judges that whether the Guan Wen of described vaporizer is less than or equal to the first preset temperature, and judging the Guan Wen of described vaporizer
Control described first control valve during less than or equal to described first preset temperature to close, and control the closedown of described compressor, and control
Making described cross valve power down commutation, after time delay the first Preset Time, described control module controls described first control valve and described
Second control valve is opened with scheduled rate, and controls the unlatching of described compressor, so that described air-conditioner starts to perform defrost action.
Air-conditioner the most according to claim 6, it is characterised in that during described air-conditioner performs defrost action,
Described control module also judges whether the Guan Wen of described condenser is more than or equal to the second preset temperature, if the pipe of described condenser
Temperature is more than or equal to described second preset temperature, and described control module then carries out refrigerant recovering control to described compressor, and controls
Described first control valve is closed, so that described air-conditioner enters the second refrigerant recovering process, described control module judges described steaming
The Guan Wen sending out device is more than or equal to the 3rd preset temperature and default warm more than or equal to the described 3rd at the Guan Wen of described vaporizer
When spending, control described second control valve and close, and control the closedown of described compressor, after time delay the second Preset Time, described control
Module controls described first control valve and described second control valve and opens with described scheduled rate, and controls described cross valve and power on
Commutation, and control the unlatching of described compressor, so that described air-conditioner runs with heating mode.
Air-conditioner the most according to claim 7, it is characterised in that after described air-conditioner runs with heating mode, if
The Guan Wen of described vaporizer is more than or equal to described 4th preset temperature, and described control module then judges the defrost of described air-conditioner
Journey is fully completed.
Air-conditioner the most according to claim 6, it is characterised in that after described air-conditioner enters defrost pattern, described control
Molding block also controls described electricity auxiliary heating apparatus and opens, and controls described indoor fan with preset gear operation.
10. according to the air-conditioner according to any one of claim 6-9, it is characterised in that wherein,
When described compressor is frequency-changeable compressor, described control module carries out refrigerant recovering control to described compressor, specifically
For, described control module controls described frequency-changeable compressor and runs with default refrigerant recovering frequency；
When described compressor is invariable frequency compressor, described control module carries out refrigerant recovering control to described compressor, specifically
For, described control module controls described compressor and keeps current rotating speed to run.
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| CN109059173A (en) * | 2018-07-25 | 2018-12-21 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method, computer readable storage medium |
| CN109827361A (en) * | 2018-12-29 | 2019-05-31 | 西安交通大学 | The reverse cycle defrosting method, apparatus of air-conditioning system and air-conditioning system |
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| CN111156589A (en) * | 2020-01-02 | 2020-05-15 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioning system, storage medium and processor |
| CN111156589B (en) * | 2020-01-02 | 2021-04-09 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioning system, storage medium and processor |
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