CN109974203A - A kind of Defrost method and air conditioner of air conditioner - Google Patents
A kind of Defrost method and air conditioner of air conditioner Download PDFInfo
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- CN109974203A CN109974203A CN201910169051.XA CN201910169051A CN109974203A CN 109974203 A CN109974203 A CN 109974203A CN 201910169051 A CN201910169051 A CN 201910169051A CN 109974203 A CN109974203 A CN 109974203A
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- heat exchanger
- air conditioner
- temperature
- fan
- heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention discloses a kind of Defrost method of air conditioner and air conditioners, are related to air-conditioning technical field, solve air conditioner and defrost in winter, room temperature is caused to decline, the poor problem of user experience.The specific scheme is that obtaining the first liquid pipe temperature of first heat exchanger and the second liquid pipe temperature of second heat exchanger after the heating time reaches given threshold；If the first liquid pipe temperature is less than the first defrosting temperature threshold, second liquid pipe temperature is greater than or equal to the second defrosting temperature threshold, then controls first heat exchanger and defrost, the first fan of control is out of service, it controls second heat exchanger and keeps heating, control the second fan operation.During the embodiment of the present invention is for air conditioner defrosting.
Description
Technical field
The present embodiments relate to air-conditioning technical field more particularly to the Defrost methods and air conditioner of a kind of air conditioner.
Background technique
Air conditioner in winter low-temperature heating when, the heat-exchanger surface temperature of outdoor unit is lower, when be lower than outdoor air temperature
When spending, the vapor in outdoor air will be condensed in heat-exchanger surface, so as to the refrigerant heat absorption in heat exchanger.But
It is that, if outside air temperature is lower than zero degrees celsius, the vapor in air can be condensed in heat-exchanger surface to be frosted.With
Heating operations continue, and the frost layer of heat-exchanger surface can constantly thicken, so that the heating effect of air conditioner is deteriorated.Therefore when frost
When layer runs up to certain thickness, air conditioner defrosts.
In the prior art, for commutated with four-way valve realize hot and cold alternation air conditioner for, defrosting process actually
It is exactly process of refrigerastion, the heat exchanger of outdoor unit can draw enough heats from indoor and carry out defrost, will lead to interior in this way
Temperature decline, influences user experience.
Summary of the invention
The present invention provides the Defrost method and air conditioner of a kind of air conditioner, solves air conditioner and defrosts in winter, leads
Cause room temperature decline, the poor problem of user experience.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of Defrost method of air conditioner, this method can be applied to air conditioner, air conditioner
Outdoor unit include: first heat exchanger, second heat exchanger, the first fan corresponding with first heat exchanger, and with
Corresponding second fan of two heat exchangers.This method may include: after the heating time reaching given threshold, to obtain the first heat exchange
First liquid pipe temperature of device and the second liquid pipe temperature of second heat exchanger；If the first liquid pipe temperature is less than the first defrosting temperature
Threshold value, the second liquid pipe temperature are greater than or equal to the second defrosting temperature threshold, then control first heat exchanger and defrost, control the
One fan is out of service, and control second heat exchanger keeps heating, control the second fan operation.
It with reference to first aspect, in one possible implementation, can also include: the indoor unit air inlet for obtaining air conditioner
The return air temperature of mouth；If return air temperature is greater than or equal to the difference of heating set temperature and offset, the wind of indoor unit is controlled
Fan remains operational；If return air temperature is less than difference, judge whether indoor unit includes electric heating.When indoor unit includes electric heating,
Control electric heating is heated；When indoor unit does not include electric heating, control reduces the revolving speed of the fan of indoor unit；Determining return air
When the duration that temperature is less than difference is greater than or equal to time threshold, prompt information is exported, prompt information is for prompting user
Whether reduction heats set temperature；When receiving the refusal operation of user, control second heat exchanger defrosts, control second
Fan is out of service；When receiving the confirmation operation of user, control reduces heating set temperature.
Can also include: in alternatively possible implementation with above-mentioned possible implementation with reference to first aspect
After first heat exchanger is defrosted, the tracheal pressure of first heat exchanger is obtained；If tracheal pressure is less than setup pressure value,
And the duration reaches the first preset time, then controls first heat exchanger and heated, and controls the operation of the first fan；If
Tracheal pressure is greater than or equal to setup pressure value, the liquid pipe temperature of current first heat exchanger less than the first defrosting temperature threshold,
And reach the second preset time less than the duration of the first defrosting temperature threshold, then it controls first heat exchanger and is heated,
And control the operation of the first fan.
With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, the room of air conditioner
Outer machine can also include: that water draining plate is set to when water draining plate combines placement above and below first heat exchanger and second heat exchanger
Between two heat exchangers, the second heat exchanger of heating is fallen on for the condensed water after preventing first heat exchanger from defrosting.
Second aspect, the present invention provide a kind of air conditioner, and outdoor unit of the air conditioner may include: first heat exchanger,
Two heat exchangers, the first fan corresponding with first heat exchanger, and the second fan corresponding with second heat exchanger, air-conditioning
Device may include: acquiring unit and control unit.Acquiring unit, for obtaining first after the heating time reaches given threshold
First liquid pipe temperature of heat exchanger and the second liquid pipe temperature of second heat exchanger；Control unit, if being used for the first liquid pipe
For temperature less than the first defrosting temperature threshold, the second liquid pipe temperature is greater than or equal to the second defrosting temperature threshold, then controls the first heat
Exchanger defrosts, and the first fan of control is out of service, and control second heat exchanger keeps heating, control the second fan fortune
Row.
In conjunction with second aspect, in one possible implementation, air conditioner can also include: that judging unit and output are single
Member.Acquiring unit is also used to obtain the return air temperature of the indoor unit air inlet of air conditioner；Control unit, if being also used to return air temperature
Degree is greater than or equal to the difference of heating set temperature and offset, then the fan for controlling indoor unit remains operational；Judging unit is used
If being less than difference in return air temperature, judge whether indoor unit includes electric heating；Control unit, the machine indoors that is also used to include electricity
When heating, control electric heating is heated；When machine does not include electric heating indoors, control reduces the revolving speed of the fan of indoor unit；
Output unit, for when determining that return air temperature is less than the duration of difference more than or equal to time threshold, output prompt to be believed
Breath, prompt information reduce heating set temperature for prompting the user whether；Control unit is also used in the refusal for receiving user
When operation, control second heat exchanger defrosts, and the second fan of control is out of service；In the confirmation operation for receiving user
When, control reduces heating set temperature.
In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, acquiring unit, also
For after first heat exchanger is defrosted, obtaining the tracheal pressure of first heat exchanger；Control unit, if being also used to gas
Pipe pressure is less than setup pressure value, and the duration reaches the first preset time, then controls first heat exchanger and heated, and
Control the operation of the first fan；If tracheal pressure is greater than or equal to setup pressure value, the liquid pipe temperature of current first heat exchanger
Reach the second preset time less than the first defrosting temperature threshold, and less than the duration of the first defrosting temperature threshold, then controls
First heat exchanger is heated, and controls the operation of the first fan.
In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, the room of air conditioner
Outer machine can also include: that water draining plate is set to when water draining plate combines placement above and below first heat exchanger and second heat exchanger
Between two heat exchangers, the second heat exchanger of heating is fallen on for the condensed water after preventing first heat exchanger from defrosting.
The air conditioner that concrete implementation mode can be provided with reference to the possible implementation of first aspect or first aspect
Defrost method in air conditioner behavioral function.
The third aspect provides a kind of air conditioner, the air conditioner include: at least one processor, memory, communication interface and
Communication bus.Processor is connect with memory, communication interface by communication bus, and memory refers to for storing computer execution
It enables, when air conditioner operation, processor executes the computer executed instructions of memory storage, so that air conditioner executes such as first party
The Defrost method of the air conditioner of any one of the possible implementation of face or first aspect.
Fourth aspect provides a kind of computer storage medium, is stored thereon with computer executed instructions, when computer executes
Instruction on air conditioner when running, so that air conditioner is executed as any in the possible implementation of first aspect or first aspect
The Defrost method of one air conditioner.
The Defrost method of air conditioner provided by the invention, in a heating mode, if the liquid pipe temperature of first heat exchanger
Less than the first defrosting temperature threshold, the liquid pipe temperature of second heat exchanger is greater than or equal to the second defrosting temperature threshold, then air-conditioning
Device enters defrosting and heating synchronous mode, i.e. control first heat exchanger defrosts, while the first fan of control is out of service,
And control second heat exchanger and keep heating, the second fan of control remains operational.In this way, if only the first liquid pipe temperature is less than
One defrosting temperature threshold, then show that the frost layer in first heat exchanger is thicker, and the first thicker heat of priority acccess control frost layer is handed at this time
Parallel operation defrosts, and the first fan of control is out of service, reduces the frosting degree of air conditioner on the whole, while controlling the second heat
Exchanger keeps heating, and controls the second fan and remain operational, to reduce the reduction of room temperature, thus during reducing defrosting
The influence to cool down to user.
Detailed description of the invention
Fig. 1 is a kind of composition schematic diagram of air conditioner provided in an embodiment of the present invention；
Fig. 2 is a kind of appearance diagram of water draining plate provided in an embodiment of the present invention；
Fig. 3 is a kind of scheme of installation of water draining plate provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the Defrost method of air conditioner provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the Defrost method of another air conditioner provided in an embodiment of the present invention；
Fig. 6 is the composition schematic diagram of another air conditioner provided in an embodiment of the present invention；
Fig. 7 is the composition schematic diagram of another air conditioner provided in an embodiment of the present invention；
Fig. 8 is the composition schematic diagram of another air conditioner provided in an embodiment of the present invention；
Fig. 9 is the composition schematic diagram of another air conditioner provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It defrosts in winter to solve air conditioner, room temperature is caused to decline, the poor problem of user experience, this hair
Bright embodiment provides a kind of Defrost method of air conditioner, and this method can be applied to air conditioner.As shown in Figure 1, air conditioner can
To include: indoor unit and outdoor unit, wherein outdoor unit may include: liquid side shut-off valve 1, gas side shut-off valve 2, compressor 3, four
Logical reversal valve 4, water draining plate 5, the first fan 6-1, the second fan 6-2, first heat exchanger 7-1, second heat exchanger 7-2, the
One gas collecting tube 8-1, the second gas collecting tube 8-2, the first collector tube 9-1, the second collector tube 9-2, the first electric expansion valve 10-1, second
Electric expansion valve 10-2, the first solenoid valve 11-1, second solenoid valve 11-2, third solenoid valve 11-3, the 4th solenoid valve 11-4.
It should be noted that the placement in the embodiment of the present invention, to first heat exchanger 7-1 and second heat exchanger 7-2
Mode is not specifically limited.It is placed as exemplifying with first heat exchanger 7-1 and second heat exchanger 7-2 or more combination in Fig. 1,
In this case, water draining plate 5 can be arranged between two heat exchangers, for solidifying after preventing first heat exchanger 7-1 from defrosting
It bears water on the second heat exchanger 7-2 for falling on heating, influences the heating effect of second heat exchanger 7-2.To reach the purpose, dredge
Water plate 5 can use hydrophilic coating and corrosion protection design, and the two sides of water draining plate 5 are designed as arc, as shown in Fig. 2, being hydrophobic
The appearance diagram of plate 5.As shown in figure 3, being the scheme of installation of water draining plate 5.
In conjunction with Fig. 1, as shown in figure 4, the Defrost method of air conditioner may include:
201, heating the time reach given threshold after, obtain the first liquid pipe temperature and the second heat exchange of first heat exchanger
Second liquid pipe temperature of device.
Wherein, after air conditioner enters heating mode, can start from scratch timing, after the heating time reaching given threshold,
First liquid pipe temperature of the first heat exchanger of available acquisition and the second liquid pipe temperature of second heat exchanger.
It should be noted that the control that air conditioner runs heating mode is as shown in table 1 in conjunction with Fig. 1, and in the control, first
Solenoid valve and second solenoid valve are usually fully closed, when the pressure of inspiration(Pi) of compressor be less than lower limit value when, control the first solenoid valve and
Second solenoid valve standard-sized sheet, so that the air-breathing side of compressor is arrived in the exhaust (12) of compressor by bypass (13) and (18).
Table 1
| Serial number | Title | Operating status |
| 1 | Liquid side shut-off valve | Standard-sized sheet |
| 2 | Gas side shut-off valve | Standard-sized sheet |
| 3 | Compressor | Control operation |
| 4 | Four-way reversing valve | It is only electric |
| 6-1 | First fan | Control operation |
| 6-2 | Second fan | Control operation |
| 10-1 | First electric expansion valve | It is fully closed |
| 10-2 | Second electric expansion valve | It is fully closed |
| 11-1 | First solenoid valve | Control operation |
| 11-2 | Second solenoid valve | Control operation |
| 11-3 | Third solenoid valve | Standard-sized sheet |
| 11-4 | 4th solenoid valve | Standard-sized sheet |
At this point, first heat exchanger and second heat exchanger are heated, circulation process are as follows: cooling medium liquid interface tube (1)
→ (2), divide two-way since (2), wherein all the way are as follows: (2) → (17) → (16) → (15) → (14) → (19) → (8), it is another
Road are as follows: (2) → (3) → (4) → (5) → (6) → (7) → (8), two-way merge: (8) → (9) → (10) → (11) → (12) →
(20) → refrigerant air pipe interface (21).
If 202, the first liquid pipe temperature is less than the first defrosting temperature threshold, the second liquid pipe temperature is greater than or equal to second and removes
White temperature threshold then controls first heat exchanger and defrosts, and the first fan of control is out of service, and control second heat exchanger is protected
Hold heating, control the second fan operation.
Wherein, air conditioner, can be to the two liquid pipe temperature after getting the first liquid pipe temperature and the second liquid pipe temperature
Degree is determined.If the first liquid pipe temperature, less than the first defrosting temperature threshold, the second liquid pipe temperature is greater than or equal to second and removes
White temperature threshold, then air conditioner can enter defrost and heating synchronous mode, i.e., air conditioner can control first heat exchanger into
Row defrosting, while the first fan of control is out of service, to remove the frost layer condensed in first heat exchanger, and controls the second heat
Exchanger keeps heating, and the second fan of control remains operational, and controls the operation of compressor high frequency.In concrete implementation, in conjunction with
The control of Fig. 1, first heat exchanger defrosting, second heat exchanger heating are as shown in table 2:
Table 2
| Serial number | Title | Operating status |
| 1 | Liquid side shut-off valve | Standard-sized sheet |
| 2 | Gas side shut-off valve | Standard-sized sheet |
| 3 | Compressor | Control operation |
| 4 | Four-way reversing valve | It is only electric |
| 6-1 | First fan | It is out of service |
| 6-2 | Second fan | Control operation |
| 10-1 | First electric expansion valve | Standard-sized sheet |
| 10-2 | Second electric expansion valve | Control operation |
| 11-1 | First solenoid valve | It is fully closed |
| 11-2 | Second solenoid valve | Standard-sized sheet |
| 11-3 | Third solenoid valve | Standard-sized sheet |
| 11-4 | 4th solenoid valve | It is fully closed |
At this point, circulation process are as follows: cooling medium liquid interface tube (1) → (2) → (3) → (4) → (5) → (6) → (7) → (8) →
(9) → (10) → (11) → (12), divide two-way since (12), wherein all the way are as follows: (12) → (20) → refrigerant air pipe interface
(21), another way are as follows: (12) → (13) → (14) → (15) → (16) → (17) → (3).
If the first liquid pipe temperature is greater than or equal to the first defrosting temperature threshold, the second liquid pipe temperature is less than the second defrosting temperature
Threshold value is spent, then air conditioner enters defrosting and heating synchronous mode, i.e. air conditioner can control first heat exchanger and keep heating, control
It makes the first fan to remain operational, and controls second heat exchanger and defrost, the second fan of control is out of service, to remove the
The frost layer condensed on two heat exchangers, and control the operation of compressor high frequency.In concrete implementation, in conjunction with Fig. 1, the first heat exchange
The control of device heating, second heat exchanger defrosting is as shown in table 3:
Table 3
At this point, circulation process are as follows: cooling medium liquid interface tube (1) → (2) → (17) → (16) → (15) → (14) → (19) →
(8) → (9) → (10) → (11) → (12), divide two-way since (12), wherein all the way are as follows: (12) → (20) → refrigerant tracheae connects
Mouth (21), another way are as follows: (12) → (18) → (6) → (5) → (4) → (3) → (17).
If the first liquid pipe temperature is less than the first defrosting temperature threshold, and the second liquid pipe temperature is less than the second defrosting temperature threshold
Value, then air conditioner enters full defrosting mode, i.e., air conditioner can control first heat exchanger and second heat exchanger defrosts,
And the first fan of control and the second fan are out of service, and control the operation of compressor high frequency.In concrete implementation, in conjunction with Fig. 1,
The control of full defrosting mode is as shown in table 4:
Table 4
At this point, circulation process are as follows: refrigerant air pipe interface (21) → (20) → (12) → (9) → (10) → (11) → (8), from
(8) start a point two-way, wherein all the way are as follows: (8) → (19) → (14) → (15) → (16) → (17), another way are as follows: (8) → (7)
→ (6) → (5) → (4) → (3), (17) and (3) merging → (2) → cooling medium liquid interface tube (1).
If the first liquid pipe temperature is greater than or equal to the first defrosting temperature threshold, the second liquid pipe temperature is greater than or equal to second
Defrost temperature threshold, then air conditioner continue keep heating mode, and run one section when after reacquire two liquid pipe temperature
Determined, corresponding operation is executed according to judgement result.
It should be noted that air conditioner can obtain two heat exchangers in real time in the case where defrosting and heating synchronous mode
Liquid pipe temperature, if the liquid pipe temperature of two heat exchangers is respectively less than corresponding defrosting temperature threshold, air conditioner from defrosting and
Heating synchronous mode is switched to full defrosting mode.
Further, in embodiments of the present invention, air conditioner enters defrosting and heating synchronous mode, such as first heat exchanger
Defrosting, in the case that second heat exchanger heats, air conditioner can obtain the tracheae pressure of first heat exchanger after the frost is removed in real time
Power.If the tracheal pressure is less than setup pressure value, and tracheal pressure reaches first in advance less than the duration of setup pressure value
If the time, then air conditioner can enter full heating mode, i.e. control first heat exchanger is heated, and controls the first fan fortune
Row.If the tracheal pressure is greater than or equal to setup pressure value, the liquid pipe of the available current first heat exchanger of air conditioner
Temperature shows that defrost terminates, air conditioner can enter if current liquid pipe temperature is greater than or equal to the first defrosting temperature threshold
Full heating mode.If current liquid pipe temperature is less than the first defrosting temperature threshold, and liquid pipe temperature is less than the first defrosting temperature threshold
The duration of value reaches the second preset time, then air conditioner can be defrosted with compulsory withdrawal, into full heating mode, i.e. control the
One heat exchanger is heated, and controls the operation of the first fan.
It should be noted that, since first heat exchanger heats, second heat exchanger is removed under defrosting and heating synchronous mode
The case where frost defrosts with first heat exchanger, and second heat exchanger heats is similar, therefore heats about in first heat exchanger, the
Two heat exchangers exit defrosting condition in the case where defrosting can defrost with reference to above-mentioned first heat exchanger, second heat exchanger
The condition of defrosting is exited in the case where heating.
Further, in embodiments of the present invention, it after air conditioner enters full defrosting mode, can obtain respectively after the frost is removed
Take the tracheal pressure of two heat exchangers.It is less than corresponding setup pressure value if there is at least one tracheal pressure, and continues
Time reaches the first preset time, then air conditioner can exit defrosting, into full heating mode, that is, control two heat exchangers into
Row heating, and control two fan operations.If two tracheal pressures are all larger than or are equal to corresponding setup pressure value, air-conditioning
The current liquid pipe temperature of available two heat exchangers of device, if two liquid pipe temperature are respectively less than corresponding defrosting temperature threshold
Value, and the duration reaches the second preset time, then air conditioner can be defrosted with compulsory withdrawal, into full heating mode, that is, be controlled
Two heat exchangers are heated, and control two fan operations.If two liquid pipe temperature are all larger than or remove equal to corresponding
White temperature threshold then shows that defrost terminates, and air conditioner can enter full heating mode.If a liquid pipe temperature is less than corresponding
Defrost temperature threshold, another liquid pipe temperature is greater than or equal to corresponding defrosting temperature threshold, then air conditioner enters defrosting and system
Hotsync mode.
Further, in embodiments of the present invention, air conditioner enters defrosting and heating synchronous mode, in above-mentioned steps 202
Indoor unit can also be controlled later, as shown in figure 5, the Defrost method of air conditioner can also include:
203, the return air temperature of the indoor unit air inlet of air conditioner is obtained.
If 204, return air temperature is greater than or equal to the difference of heating set temperature and offset, the fan of indoor unit is controlled
It remains operational.
Wherein, air conditioner is after getting return air temperature, however, it is determined that the return air temperature is greater than or equal to heating setting temperature
The difference of degree and offset then shows still to be able to reach indoor heating set temperature when air conditioner defrosting, and air conditioner can at this time
The constant operation of revolving speed is kept to control the fan of indoor unit, and heating set temperature is maintained to remain unchanged.
If 205, return air temperature is less than difference, judge whether indoor unit includes electric heating.
Wherein, if return air temperature is less than difference, show that air conditioner in the case where defrosting and heating synchronous mode, is unable to reach room
Interior set temperature, air conditioner needs to heat indoors at this time, to improve room temperature.Specifically, air conditioner may determine that
Whether indoor unit includes electric heating, if comprising, following steps 206 can be executed, if not including, air conditioner can execute with
Lower step 207.
206, when indoor unit includes electric heating, control electric heating is heated.
207, when indoor unit does not include electric heating, control reduces the revolving speed of the fan of indoor unit.
208, when determining that return air temperature is less than the duration of difference more than or equal to time threshold, output prompt letter
Breath.
Wherein, air conditioner can obtain return air temperature in real time, and control electric heating heating or indoors the fan of machine with
After revolving speed operation after reduction, judge whether return air temperature is greater than or equal to time threshold less than the duration of difference.If
It is that then air conditioner can export prompt information, which reduces heating set temperature for prompting the user whether, that is,
It says, air conditioner has currently been unable to maintain that indoor set temperature in defrosting, needs to ask the user whether to be ready to reduce system
Heat setting temperature.If it is not, then air conditioner can keep rotation speed of the fan and the heating constant operation of set temperature of indoor unit.
209, when receiving the refusal operation of user, control second heat exchanger defrosts, and the second fan of control stops
Operation.
Wherein, air conditioner is after exporting prompt information, if receiving the refusal operation of user, air conditioner can be from defrosting
It is switched to full defrosting mode with heating synchronous mode, such as when first heat exchanger defrosts, and second heat exchanger heats, controls the
Two heat exchangers defrost, and it is out of service to control the second fan.
210, when receiving the confirmation operation of user, control reduces heating set temperature.
Wherein, if receiving the confirmation operation of user, air conditioner can continue to run defrosting and heating synchronous mode, and
Reduce heating set temperature.
The Defrost method of air conditioner provided by the invention, in a heating mode, if the liquid pipe temperature of first heat exchanger
Less than the first defrosting temperature threshold, the liquid pipe temperature of second heat exchanger is greater than or equal to the second defrosting temperature threshold, then air-conditioning
Device enters defrosting and heating synchronous mode, i.e. control first heat exchanger defrosts, while the first fan of control is out of service,
And control second heat exchanger and keep heating, the second fan of control remains operational.In this way, if only the first liquid pipe temperature is less than
One defrosting temperature threshold, then show that the frost layer in first heat exchanger is thicker, and the first thicker heat of priority acccess control frost layer is handed at this time
Parallel operation defrosts, and the first fan of control is out of service, reduces the frosting degree of air conditioner on the whole, while controlling the second heat
Exchanger keeps heating, and controls the second fan and remain operational, to reduce the reduction of room temperature, thus during reducing defrosting
The influence to cool down to user.
It is above-mentioned that mainly scheme provided in an embodiment of the present invention is described from the angle of air conditioner.It is understood that
It is that in order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or software module for air conditioner.This
Field technical staff should be readily appreciated that, algorithm steps described in conjunction with the examples disclosed in the embodiments of the present disclosure,
The present invention can be realized with the combining form of hardware or hardware and computer software.Some function is still calculated with hardware actually
The mode of machine software-driven hardware executes, specific application and design constraint depending on technical solution.Professional technique people
Member can use different methods to achieve the described function each specific application, but this realization is it is not considered that super
The scope of the present invention out.
The embodiment of the present invention can carry out the division of functional module according to above method example to air conditioner, for example, can be with
Two or more functions, can also be integrated in a processing module by corresponding each each functional module of function division
In.Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.It needs
It is noted that be schematical, only a kind of logical function partition to the division of module in the embodiment of the present invention, it is practical real
It is current that there may be another division manner.
In the case where each function division of use correspondence each functional module, Fig. 6 is shown involved in above-described embodiment
Air conditioner alternatively possible composition schematic diagram, as shown in fig. 6, the air conditioner may include: acquiring unit 31 and control
Unit 32.
Wherein, acquiring unit 31, for supporting air conditioner to execute the step in the Defrost method of air conditioner shown in Fig. 4
201, execute the step 203 in the Defrost method of air conditioner shown in fig. 5.
Control unit 32 is held for supporting air conditioner to execute the step 202 in the Defrost method of air conditioner shown in Fig. 4
Step 204, step 206, step 207, step 209, step 210 in the Defrost method of row air conditioner shown in fig. 5.
Further, in embodiments of the present invention, as shown in fig. 7, air conditioner this may include: judging unit 33 and output
Unit 34.
Judging unit 33, for supporting air conditioner to execute the step 205 in the Defrost method of air conditioner shown in fig. 5.
Output unit 34, for supporting air conditioner to execute the step 208 in the Defrost method of air conditioner shown in fig. 5.
It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence
The function of functional module describes, and details are not described herein.
Air conditioner provided in an embodiment of the present invention, for executing the Defrost method of above-mentioned air conditioner, therefore can achieve with
The identical effect of the Defrost method of above-mentioned air conditioner.
Using integrated unit, Fig. 8 shows the another kind of air conditioner involved in above-described embodiment
Possible composition schematic diagram.As shown in figure 8, the air conditioner includes: processing module 41, communication module 42 and memory module 43.
Processing module 41 is for carrying out control management to the movement of air conditioner, for example, processing module 41 is for supporting air-conditioning
Device executes step 201, step 202 in Fig. 4, step 203, step 204, step 205, step 206, step 207 in Fig. 5,
Step 208, step 209, step 210, and/or other processes for techniques described herein.Communication module 42 is for branch
Hold the communication of air conditioner Yu other network entities.Memory module 43, for storing the program code and data of air conditioner.
Wherein, processing module 41 can be processor.It, which may be implemented or executes, combines described by the disclosure of invention
Various illustrative logic blocks, module and circuit.Processor is also possible to realize the combination of computing function, such as includes one
The combination of a or multi-microprocessor, digital signal processor (Digital Signal Processor, DSP) and microprocessor
Combination etc..Communication module 42 can be communication interface.Memory module 43 can be memory.
When processing module 41 is processor, communication module 42 is communication interface, when memory module 43 is memory, the present invention
The air conditioner of embodiment can be air conditioner shown in Fig. 9.
Fig. 9 is a kind of composition schematic diagram of air conditioner provided in an embodiment of the present invention, as shown in figure 9, the air conditioner can be with
It include: at least one processor 51, memory 52, communication interface 53 and communication bus 54.
It is specifically introduced below with reference to each component parts of the Fig. 9 to air conditioner:
Wherein, processor 51 is the control centre of air conditioner, can be a processor, is also possible to multiple processing elements
General designation.For example, processor 51 is a central processing unit (Central Processing Unit, CPU), it is also possible to spy
Determine integrated circuit (Application Specific Integrated Circuit, ASIC), or is arranged to implement this
One or more integrated circuits of inventive embodiments, such as: one or more DSP, or, one or more field programmable gate
Array (Field Programmable Gate Array, FPGA).
In concrete implementation, as one embodiment, processor 51 may include one or more CPU, such as in Fig. 9
Shown in CPU0 and CPU1.And as one embodiment, air conditioner may include multiple processors, such as shown in Fig. 9
Manage device 51 and processor 55.Each of these processors can be a single core processor (Single-CPU), can also be with
It is a multi-core processor (Multi-CPU).Here processor can refer to one or more equipment, circuit, and/or for locating
Manage the processing core of data (such as computer program instructions).
Memory 52 can be read-only memory (Read-Only Memory, ROM) or can store static information and instruction
Other kinds of static storage device, random access memory (Random Access Memory, RAM) or letter can be stored
The other kinds of dynamic memory of breath and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory (Electrically
Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-
Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, digital universal
Optical disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store to have referring to
Enable or data structure form desired program code and can by any other medium of computer access, but not limited to this.
Memory 52, which can be, to be individually present, and is connected by communication bus 54 with processor 51.Memory 52 can also and processor
51 integrate.
In concrete implementation, memory 52, for storing the data in the present invention and executing software program of the invention.
Processor 51 can be by running or execute the software program being stored in memory 52, and calls and be stored in memory 52
Data, execute the various functions of air conditioner.
Communication interface 53, using the device of any transceiver one kind, for other equipment or communication, such as nothing
Line access (Radio Access Network, RAN), WLAN (Wireless Local Area Networks,
WLAN) etc..Communication interface 53 may include that receiving unit realizes that receive capabilities and transmission unit realize sending function.
Communication bus 54 can be industry standard architecture (IndustrV Standard Architecture, ISA)
Bus, external equipment interconnection (Peripheral Component Interconnect, PCI) bus or extension industrial standard body
Architecture (Extended lndustrV Standard Architecture, EISA) bus etc..The bus can be divided into address
Bus, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 9, it is not intended that only one convenient for indicating
Bus or a type of bus.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the module or unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It may be combined or can be integrated into another device, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over
Multiple and different places.Some or all of unit therein can be selected to realize this embodiment scheme according to the actual needs
Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that an equipment (can be list
Piece machine, chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk etc. are various can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Change or replacement in the technical scope disclosed by the present invention, should be covered by the protection scope of the present invention.Therefore, this hair
Bright protection scope should be based on the protection scope of the described claims.
Claims (10)
1. a kind of Defrost method of air conditioner, which is characterized in that be applied to air conditioner, the outdoor unit of the air conditioner includes: the
One heat exchanger, second heat exchanger, the first fan corresponding with the first heat exchanger, and with second heat exchange
Corresponding second fan of device, which comprises
After the heating time reaches given threshold, the first liquid pipe temperature and second heat exchange of the first heat exchanger are obtained
Second liquid pipe temperature of device；
If the first liquid pipe temperature, less than the first defrosting temperature threshold, the second liquid pipe temperature is greater than or equal to second and removes
White temperature threshold then controls the first heat exchanger and defrosts, and it is out of service to control first fan, controls described the
Two heat exchangers keep heating, control the second fan operation.
2. the Defrost method of air conditioner according to claim 1, which is characterized in that the method also includes:
Obtain the return air temperature of the indoor unit air inlet of the air conditioner；
If the return air temperature is greater than or equal to the difference of heating set temperature and offset, the fan of the indoor unit is controlled
It remains operational；
If the return air temperature is less than the difference, judge whether the indoor unit includes electric heating；
When the indoor unit includes the electric heating, controls the electric heating and heated；
When the indoor unit does not include the electric heating, control reduces the revolving speed of the fan of the indoor unit；
When determining that the return air temperature is less than the duration of the difference more than or equal to time threshold, output prompt letter
Breath, the prompt information is for prompting the user whether to reduce the heating set temperature；
It when receiving the refusal operation of user, controls the second heat exchanger and defrosts, control second fan and stop
Operation；
When receiving the confirmation operation of user, control reduces the heating set temperature.
3. the Defrost method of air conditioner according to claim 1 or 2, which is characterized in that the method also includes:
After the first heat exchanger is defrosted, the tracheal pressure of the first heat exchanger is obtained；
If the tracheal pressure is less than setup pressure value, and the duration reaches the first preset time, then controls described first
Heat exchanger is heated, and controls the first fan operation；
If the tracheal pressure is greater than or equal to the setup pressure value, the liquid pipe temperature of presently described first heat exchanger is small
In the first defrosting temperature threshold, and the duration for being less than the first defrosting temperature threshold reaches the second preset time,
It then controls the first heat exchanger to be heated, and controls the first fan operation.
4. the Defrost method of air conditioner according to claim 1, which is characterized in that the outdoor unit of the air conditioner is also wrapped
Include: water draining plate is set to when the water draining plate combines placement above and below the first heat exchanger and the second heat exchanger
Between two heat exchangers, second heat for falling on heating for the condensed water after preventing the first heat exchanger from defrosting is handed over
On parallel operation.
5. a kind of air conditioner, which is characterized in that the outdoor unit of the air conditioner includes: first heat exchanger, second heat exchanger,
The first fan corresponding with the first heat exchanger, and the second fan corresponding with the second heat exchanger, the sky
Adjusting device includes: acquiring unit and control unit；
The acquiring unit, for obtaining the first liquid pipe of the first heat exchanger after the heating time reaches given threshold
Second liquid pipe temperature of temperature and the second heat exchanger；
Described control unit, if for the first liquid pipe temperature less than the first defrosting temperature threshold, the second liquid pipe temperature
Degree is greater than or equal to the second defrosting temperature threshold, then controls the first heat exchanger and defrost, control first fan
It is out of service, it controls the second heat exchanger and keeps heating, control the second fan operation.
6. air conditioner according to claim 5, which is characterized in that the air conditioner further include: judging unit and output are single
Member；
The acquiring unit is also used to obtain the return air temperature of the indoor unit air inlet of the air conditioner；
Described control unit, if being also used to the difference that the return air temperature is greater than or equal to heating set temperature and offset,
The fan for controlling the indoor unit remains operational；
The judging unit judges whether the indoor unit includes that electricity adds if being less than the difference for the return air temperature
Heat；
Described control unit is also used to control the electric heating when the indoor unit includes the electric heating and heated；?
When the indoor unit does not include the electric heating, control reduces the revolving speed of the fan of the indoor unit；
The output unit, for determining that duration of the return air temperature less than the difference is greater than or equal to time threshold
When value, prompt information is exported, the prompt information is for prompting the user whether to reduce the heating set temperature；
Described control unit is also used to control the second heat exchanger in the refusal operation for receiving user and defrost,
It is out of service to control second fan；In the confirmation operation for receiving user, control reduces the heating set temperature.
7. air conditioner according to claim 5 or 6, which is characterized in that
The acquiring unit is also used to after the first heat exchanger is defrosted, and obtains the gas of the first heat exchanger
Pipe pressure；
Described control unit, if being also used to the tracheal pressure less than setup pressure value, and the duration reaches first and presets
Time then controls the first heat exchanger and is heated, and controls the first fan operation；If the tracheal pressure is big
In or equal to the setup pressure value, the liquid pipe temperature of presently described first heat exchanger is less than the first defrosting temperature threshold
Value, and the duration for being less than the first defrosting temperature threshold reaches the second preset time, then controls first heat exchange
Device is heated, and controls the first fan operation.
8. air conditioner according to claim 5, which is characterized in that the outdoor unit of the air conditioner further include: water draining plate, institute
State water draining plate combined above and below the first heat exchanger and the second heat exchanger placement when, be set to two heat exchangers
Between, the second heat exchanger of heating is fallen on for the condensed water after preventing the first heat exchanger from defrosting.
9. a kind of air conditioner, which is characterized in that the air conditioner includes: processor, memory, communication interface and communication bus；
The processor is connect with the memory, the communication interface by the communication bus, and the memory is for depositing
Computer executed instructions are stored up, when air conditioner operation, the processor executes the computer of the memory storage
It executes instruction, so that the air conditioner executes the Defrost method such as air conditioner of any of claims 1-4.
10. a kind of computer storage medium, which is characterized in that the computer storage medium includes computer executed instructions, when
The computer executed instructions on air conditioner when running, so that the air conditioner is executed such as any one of claim 1-4 institute
The Defrost method for the air conditioner stated.
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| CN201910169051.XA CN109974203B (en) | 2019-03-06 | 2019-03-06 | Defrosting method of air conditioner and air conditioner |
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| CN201910169051.XA CN109974203B (en) | 2019-03-06 | 2019-03-06 | Defrosting method of air conditioner and air conditioner |
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| CN111237984A (en) * | 2020-01-17 | 2020-06-05 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, air conditioner and computer readable storage medium |
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