CN114893885B - Control method for heating defrosting of air conditioner, control device and medium - Google Patents

Control method for heating defrosting of air conditioner, control device and medium Download PDF

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Publication number
CN114893885B
CN114893885B CN202210473809.0A CN202210473809A CN114893885B CN 114893885 B CN114893885 B CN 114893885B CN 202210473809 A CN202210473809 A CN 202210473809A CN 114893885 B CN114893885 B CN 114893885B
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China
Prior art keywords
defrosting
temperature
heat exchanger
defrosting stage
air conditioner
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CN202210473809.0A
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Chinese (zh)
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CN114893885A (en
Inventor
吴成意
应必业
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN202210473809.0A priority Critical patent/CN114893885B/en
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Classifications

    • 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
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • 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

Abstract

The invention provides a control method for heating and defrosting of an air conditioner, the air conditioner, a control device and a medium, wherein the control method comprises the following steps: and the defrosting stage comprises the step of controlling the outer fan to continuously rotate so as to realize heating defrosting. Compared with the prior art, the scheme can achieve the following effects: the defrosting stage in this embodiment is directed at the condition that the outer layer of the heat exchanger is iced, so when the defrosting stage in this embodiment, the outer fan continuously rotates, and at this time, because the outdoor heat exchanger is covered by the ice layer, a large amount of air quantity is not generated to blow away heat, but the ice layer on the inner side of the heat exchanger is directly peeled off the heat exchanger, so that the ice layer directly falls off from the heat exchanger, and meanwhile, the ice layer on the outer side is firmly adsorbed on the surface of the heat exchanger, so that heat is continuously transferred to the ice layer, and melting and falling of the ice layer are realized.

Description

Control method for heating defrosting of air conditioner, control device and medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for heating and defrosting of an air conditioner, the air conditioner, a control device and a medium.
Background
With the development of air conditioners, when the outdoor air temperature is low, a frost layer is generated on the heat exchanger of the outdoor unit, so that the heat exchange effect of the heat exchanger and the outdoor air is affected, and the heating effect is rapidly reduced, therefore, defrosting is required when the outdoor unit frosts, and the air conditioner heating effect is improved. In the related art, four-way valves are adopted for reversing refrigeration and defrosting, namely, the indoor fan and the outdoor fan stop running, and the system continuously transmits heat to the outdoor heat exchanger according to the refrigerating running to realize defrosting. However, if the whole surface of the condenser is frozen due to special reasons, such as night time frost, or power failure during defrosting, etc., the ice cannot be completely melted through ordinary and conventional reversing defrosting. At this time, the outdoor heat exchanger is always covered by the ice layer, so that the heat exchange effect is extremely poor, and the ordinary defrosting for many times still cannot be performed completely.
It can be seen that how to improve the defrosting effect of the air conditioner so that the air conditioner can melt the ice layer outside the heat exchanger is a problem to be solved.
Disclosure of Invention
The invention solves the problem of how to improve the defrosting effect of the air conditioner so that the air conditioner can melt the ice layer outside the heat exchanger.
In order to solve the above problems, the present invention provides a control method for heating and defrosting of an air conditioner, the control method comprising: and in the defrosting stage of the air conditioner, the external fan is controlled to continuously rotate so as to realize heating defrosting.
Compared with the prior art, the scheme can achieve the following effects: the defrosting stage in this embodiment is directed at the condition that the outer layer of the heat exchanger is iced, so when the defrosting stage in this embodiment, the outer fan continuously rotates, and at this time, because the outdoor heat exchanger is covered by the ice layer, a large amount of air quantity is not generated to blow away heat, but the ice layer on the inner side of the heat exchanger is directly peeled off the heat exchanger, so that the ice layer directly falls off from the heat exchanger, and meanwhile, the ice layer on the outer side is firmly adsorbed on the surface of the heat exchanger, so that heat is continuously transferred to the ice layer, and melting and falling of the ice layer are realized.
In one embodiment of the invention, the external fan is controlled to continuously rotate to realize heating defrosting, and the method specifically comprises the following steps: and controlling the outer fan to rotate at a high speed.
Compared with the prior art, the effect that this scheme can reach: the high-speed rotating outer fan can form stronger suction force, can further accelerate the falling of the inner side ice layer of the heat exchanger, can further stabilize the adsorption of the outer side ice layer of the heat exchanger, and realize faster melting and falling of the ice layer.
In one embodiment of the invention, the defrosting phase comprises: a preliminary defrosting stage and a deep defrosting stage; wherein the external fan does not rotate in the preliminary defrosting stage; the external fan continuously rotates in the deep defrosting stage.
Compared with the prior art, the effect that this scheme can reach: in a specific embodiment, the defrosting stage comprises a preliminary defrosting stage and a deep defrosting stage, wherein the preliminary defrosting stage corresponds to a conventional defrosting stage in the related art, and the external fan does not rotate in the preliminary defrosting stage, and the external fan continuously rotates when the deep defrosting stage is started, so that the deicing operation is facilitated
In one embodiment of the invention, before entering the preliminary defrosting phase, it further comprises: judging whether the condition for entering the preliminary defrosting stage is met or not, wherein the condition for entering the preliminary defrosting stage comprises the following steps: detecting a difference value between the temperature of the outer disc of the heat exchanger and the temperature of the outer ring, and recording the difference value as a first difference value; if the first difference value is greater than or equal to the first set temperature, the temperature of the outer disc of the heat exchanger is less than the second set temperature, and the continuous operation time of the compressor is greater than or equal to the first set time, entering a preliminary defrosting stage.
Compared with the prior art, the effect that this scheme can reach: and determining the condition for entering the preliminary defrosting stage, thereby precisely controlling the node of the air conditioner entering the preliminary defrosting stage.
In one embodiment of the invention, before entering the deep defrosting phase, further comprises: judging whether the condition for entering the deep defrosting stage is met or not, wherein the condition for entering the deep defrosting stage comprises the following steps: after the preliminary defrosting stage, detecting the difference between the temperature of the outer disc of the heat exchanger and the temperature of the outer ring, and marking the difference as a second difference; the air conditioner recovers the heat recovery for a second set time; after the second set time, detecting the difference between the temperature of the outer disc of the heat exchanger and the ambient temperature at the moment, and recording the difference as a third difference; determining a difference magnitude of the second difference minus the third difference; if the result of the difference is that the third set temperature is smaller than or equal to the third set temperature, the third difference is larger than or equal to the fourth set temperature, and the temperature of the outer disc of the heat exchanger after the second set time is smaller than the fifth set temperature, the deep defrosting stage is started.
Compared with the prior art, the effect that this scheme can reach: and determining the condition for entering the deep defrosting stage, thereby precisely controlling the node of the air conditioner entering the deep defrosting stage.
In one embodiment of the invention, after the defrosting phase, it further comprises: detecting the temperature of an outer disc of the heat exchanger; if the temperature of the outer disc of the heat exchanger is greater than or equal to the sixth set temperature, exiting the defrosting stage; and if the temperature of the outer disc of the heat exchanger is smaller than the sixth set temperature, continuing the defrosting stage.
Compared with the prior art, the effect that this scheme can reach: the time point when the air conditioner is accurately controlled to exit the defrosting stage is shortened, so that resource waste is avoided, and the running cost of the air conditioner is effectively saved.
In one embodiment of the invention, after the defrosting phase, it further comprises: detecting the total defrosting duration of a defrosting stage; if the total defrosting duration is greater than or equal to the third set duration, exiting the defrosting stage; if the total defrosting duration is smaller than the third set duration, continuing the defrosting stage.
Compared with the prior art, the effect that this scheme can reach: the time point when the air conditioner is accurately controlled to exit the defrosting stage is shortened, so that resource waste is avoided, and the running cost of the air conditioner is effectively saved.
In one embodiment of the present invention, there is provided a control apparatus including: a control module; an deicing module; wherein the control module comprises a controller, and the controller controls the deicing module to realize the steps of the control method for heating and defrosting the air conditioner according to any one of the embodiments.
Compared with the prior art, the effect that this scheme can reach: the control device in this embodiment can implement the steps of the method for controlling heating and defrosting of an air conditioner in any one of the above embodiments, so that the control device in this embodiment can implement the beneficial effects of any one of the above embodiments, and will not be described herein.
In one embodiment of the present invention, there is provided an air conditioner including: the control device of the above embodiment, wherein the control device is capable of executing a control method of heating defrosting including the air conditioner of any one of the above embodiments.
Compared with the prior art, the effect that this scheme can reach: the air conditioner in this embodiment has the control device in the foregoing embodiment, so the air conditioner in this embodiment can implement the heating defrosting control method of the air conditioner in any one of the foregoing embodiments, and has the beneficial effects of any one of the foregoing embodiments, which are not described herein.
In one embodiment of the present invention, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the method for controlling heating defrosting of an air conditioner according to any of the embodiments described above.
Compared with the prior art, the effect that this scheme can reach: the readable storage medium in this embodiment can realize the steps of the method for controlling the heating and defrosting of the air conditioner in any one of the above embodiments, so the readable storage medium in this embodiment can realize the beneficial effects of any one of the above embodiments, and will not be described herein.
Drawings
FIG. 1 is a flow chart of a method of controlling heating defrosting of an air conditioner in some embodiments;
FIG. 2 is a schematic diagram of a control device;
fig. 3 is a schematic structural view of an air conditioner.
Reference numerals illustrate:
1. an air conditioner; 100. a control device; 101. a control module; 102. and the deicing module.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments.
Embodiment one:
the embodiment provides a control method for heating and defrosting of an air conditioner, which comprises the following steps:
and in the defrosting stage of the air conditioner, the external fan is controlled to continuously rotate so as to realize heating defrosting.
In this embodiment, when the ice layer outside the heat exchanger cannot be melted in the conventional defrosting stage in the related art, the control method in this embodiment is performed, in which the ice contacting the fin surface can be formed into water in the early stage of conventional defrosting, and then since the whole ice layer can still stand on both sides of the outdoor heat exchanger, an air layer is formed between the ice layer and the condenser, and heat cannot be quickly transferred to the ice layer, resulting in failure of defrosting.
Specifically, during the conventional defrosting stage in the related art, the outer fan is always in a stop state, so that the heat for defrosting is blown away after the outer fan is started to influence the defrosting effect, but during the defrosting stage in the embodiment, the outer fan continuously rotates aiming at the situation of the outer layer ice layer of the heat exchanger, and at the moment, a large amount of air quantity is not generated to blow away the heat because the outdoor heat exchanger is covered by the ice layer, and the inner ice layer of the heat exchanger is directly peeled off the heat exchanger, so that the ice layer directly falls off from the heat exchanger, and meanwhile, the outer ice layer is firmly adsorbed on the surface of the heat exchanger, so that the heat is continuously transferred to the ice layer, and the melting and falling of the ice layer are realized.
Embodiment two:
in this embodiment, the outer fan is controlled to rotate continuously to realize heating and defrosting, and specifically includes: and controlling the outer fan to rotate at a high speed.
In this embodiment, when the defrosting stage of embodiment is being carried out to the outer fan, the outer fan carries out high-speed rotation, and high-speed pivoted outer fan can form more powerful suction, can further accelerate the drop of heat exchanger inboard ice sheet, can further stabilize the absorption of heat exchanger outside ice sheet simultaneously, realizes that more quick ice sheet melts and drops.
Embodiment III:
in this embodiment, the defrosting phase includes: a preliminary defrosting stage and a deep defrosting stage; wherein the external fan does not rotate in the preliminary defrosting stage; the external fan continuously rotates in the deep defrosting stage.
In this embodiment, the defrosting stage includes a preliminary defrosting stage and a deep defrosting stage, where the preliminary defrosting stage corresponds to a conventional defrosting stage in the related art, and in the preliminary defrosting stage, the external fan does not rotate, and when the deep defrosting stage is started, the external fan continuously rotates, so that the defrosting operation is facilitated.
Further, it should be noted that the deep defrosting phase can be started only after the preliminary defrosting phase is performed.
Embodiment four:
in this embodiment, before entering the preliminary defrosting stage, the method further includes: judging whether the condition for entering the preliminary defrosting stage is met or not, wherein the condition for entering the preliminary defrosting stage comprises the following steps: detecting a difference value between the temperature of the outer disc of the heat exchanger and the temperature of the outer ring, and recording the difference value as a first difference value; if the first difference value is greater than or equal to the first set temperature, the temperature of the outer disc of the heat exchanger is less than the second set temperature, and the continuous operation time of the compressor is greater than or equal to the first set time, entering a preliminary defrosting stage.
In this embodiment, a condition for entering preliminary defrosting is specifically described, where the first set time, the first set temperature, and the second set temperature are default factory settings of the air conditioner, and the first set time, the first set temperature, and the second set temperature can be set by an operator under different working conditions.
Firstly, the temperature of the outer disc of the heat exchanger at the moment needs to be detected, and the temperature of the outer environment at the moment is different from the temperature of the outer environment to obtain a first difference value, when the first difference value is greater than or equal to a first set temperature, in the embodiment, the first set temperature is preferably 13 ℃ and the temperature of the outer disc of the heat exchanger is less than a second set temperature, in the embodiment, the second set temperature is preferably 0 ℃ and the continuous operation time of the compressor is greater than or equal to the first set time, in the embodiment, the first set time is preferably 45 minutes, and then the air conditioner enters a preliminary defrosting stage.
Fifth embodiment:
in this embodiment, before entering the deep defrosting stage, the method further includes: judging whether the condition for entering the deep defrosting stage is met or not, wherein the condition for entering the deep defrosting stage comprises the following steps: after the preliminary defrosting stage, detecting the difference between the temperature of the outer disc of the heat exchanger and the temperature of the outer ring, and marking the difference as a second difference; the air conditioner recovers the heat recovery for a second set time; after the second set time, detecting the difference between the temperature of the outer disc of the heat exchanger and the ambient temperature at the moment, and recording the difference as a third difference; determining a difference magnitude of the second difference minus the third difference; if the result of the difference is that the third set temperature is smaller than or equal to the third set temperature, the third difference is larger than or equal to the fourth set temperature, and the temperature of the outer disc of the heat exchanger after the second set time is smaller than the fifth set temperature, the deep defrosting stage is started.
Specifically, the second set time, the third set temperature, the fourth set temperature and the fifth set temperature are default factory settings of the air conditioner, and meanwhile, the second set time, the third set temperature, the fourth set temperature and the fifth set temperature can be automatically set and changed according to different working conditions of the air conditioner by an operator.
In this embodiment, after the preliminary defrosting stage, the air conditioner makes a judgment as to whether or not it is necessary to enter the deep defrosting stage. When the air conditioner completes the preliminary defrosting stage, the temperature of the outer plate of the heat exchanger and the temperature of the outer ring of the heat exchanger are detected at first, the temperature of the outer plate of the heat exchanger is recorded as Ta when the preliminary defrosting stage is just completed, the temperature of the outer ring is recorded as Tb, and the difference value obtained by subtracting Tb from Ta is the second difference value.
And then recovering the heat of the air conditioner, wherein the recovering heating duration lasts for a second set time, specifically, the second set time is 10 minutes in the embodiment, namely, the air conditioner recovers heating for 10 minutes, the temperature of the outer disc of the heat exchanger at the moment after the air conditioner recovers heating for 10 minutes is detected and is marked as Tc, the temperature of the outer disc at the moment after the air conditioner recovers heating for 10 minutes is marked as Td, and the difference value obtained by subtracting Td from Tc is the third difference value.
At this time, the difference value of the third difference value subtracted from the second difference value is determined, and when the difference value is equal to or less than the third set temperature, the third set temperature in this embodiment is specifically 2 degrees celsius, and this result indicates that after the preliminary defrosting stage, the difference between the heat exchanging effects of the outdoor heat exchanger is not large, which means that one case is that there is no frost outside the heat exchanger, and another case is that the frost is not removed. Meanwhile, when the third difference is larger than or equal to the fourth set temperature, the fourth set temperature is 13 ℃ in the embodiment, which indicates that the heat exchange effect of the outdoor heat exchanger is poor after the preliminary defrosting stage, and the heat exchanger can be judged to be frozen by combining the two conditions, so that the preliminary defrosting stage is invalid.
Meanwhile, it is determined whether Tc is smaller than a fifth set temperature, which is specifically 0 degrees celsius in the present embodiment, and when Tc is smaller than the fifth set temperature, the air conditioner immediately enters a deep defrosting stage.
Example six:
in this embodiment, after the defrosting stage, the method further includes: detecting the temperature of an outer disc of the heat exchanger; if the temperature of the outer disc of the heat exchanger is greater than or equal to the sixth set temperature, exiting the defrosting stage; and if the temperature of the outer disc of the heat exchanger is smaller than the sixth set temperature, continuing the defrosting stage.
In this embodiment, the exit condition of the defrosting stage is specifically described, wherein the defrosting stage includes a preliminary defrosting stage and a deep defrosting stage, and meanwhile, the exit condition in this embodiment is applicable to the preliminary defrosting stage and the deep defrosting stage.
The sixth set temperature is also default factory setting of the air conditioner, and an operator can modify and set the sixth set temperature according to different working conditions. Specifically, the sixth set temperature in the present embodiment is preferably 12 degrees celsius.
In this embodiment, the real-time outer plate temperature of the heat exchanger is detected in the defrosting stage, and if the detected outer plate temperature of the heat exchanger is greater than the sixth set temperature, the defrosting is completed at this time, that is, the defrosting stage is exited.
Embodiment seven:
in this embodiment, after the defrosting stage, the method further includes: detecting the total defrosting duration of a defrosting stage; if the total defrosting duration is greater than or equal to the third set duration, exiting the defrosting stage; if the total defrosting duration is smaller than the third set duration, continuing the defrosting stage.
In this embodiment, the exit condition of the defrosting stage is specifically described, wherein the defrosting stage includes a preliminary defrosting stage and a deep defrosting stage, and meanwhile, the exit condition in this embodiment is applicable to the preliminary defrosting stage and the deep defrosting stage.
The third set time is also default factory setting of the air conditioner, and an operator can modify and set the third set time according to different working conditions. Specifically, the third set period in this embodiment is preferably 9 minutes.
In this embodiment, when the defrosting stage continues to run for 9 minutes, that is, the defrosting stage is greater than or equal to the third set duration, that is, the defrosting stage is exited.
Example eight:
referring to fig. 1, the present embodiment specifically describes a method of controlling heating defrosting of an air conditioner.
Step S10 starts, and then step S20 is performed, where the operation duration of the compressor is determined, and in order to resume heating, that is, resume heating for a second set time, if the operation duration of the compressor is greater than or equal to 10 minutes, step S30 is performed, if it is determined that the operation duration of the compressor is less than 10 minutes, step S10 is performed again.
When step S30 is entered, Λt0 in step S30 is the second difference in the fifth embodiment, Λt1 is the third difference in the fifth embodiment, Λt0—Λt1 is the difference in the fifth embodiment, and when the difference is 2 degrees celsius or less, it is determined as no, step S70 is entered, and 2 degrees celsius is the third set temperature in the fifth embodiment. When the difference is equal to or smaller than 2 degrees celsius, the step S40 is performed.
In step S40, it is determined whether the third difference is equal to or greater than 13 degrees celsius, and if yes, the process proceeds to step S50, and if no, the process proceeds to step S70. Wherein, 13 ℃ is the fourth set temperature in the fifth embodiment.
In step S50, it is determined whether Tc in the fifth embodiment is less than 0 degrees celsius, and if yes, the deep defrosting stage in step S60 is performed.
When the step S70 is performed, it is determined whether the continuous operation time of the compressor is longer than 45 minutes, if yes, the step S80 is performed, if no, the operation is performed again, and the step S70 is performed again to determine the operation time of the compressor. 45 minutes is the first set time in the fourth embodiment.
And when the step S80 is carried out, judging whether the temperature of the T outer ring-T outer disc is greater than or equal to 13 ℃, wherein the difference value of the T outer ring-T outer disc is the first difference value in the fourth embodiment, the temperature of the T outer ring-T outer disc is the first set temperature in the fourth embodiment, if yes, the step S90 is carried out, and if no, the step S70 is carried out.
And when the step S90 is started, judging whether the T outer disc is smaller than 0 ℃, wherein the T outer disc in the step S90 is the temperature of the outer disc of the heat exchanger in the four embodiments, the 0 ℃ is the second set temperature in the four embodiments, and when the step S90 is judged to be yes, the step S100 is started, and the preliminary defrosting stage is started. If not, the process returns to step S70.
Example nine:
in this embodiment, there is provided a control apparatus 100, the control apparatus 100 including: a control module 101; an deicing module 102; wherein the control module 101 includes a controller that controls the deicing module 102 to implement the steps of the control method of heating defrosting of the air conditioner as in any one of the above embodiments.
Fig. 2 illustrates some components of the control device 100, and the control device 100 may further include, but is not limited to, a storage, an identification component, and a signal transmission component, and likewise, a control module 101 in the control device 100 is in communication with each component, where the control module 101 includes a controller, and when an instruction or a program needs to be performed, the controller may control the deicing module 102 to implement the steps of the method for controlling heating and defrosting of the air conditioner according to any one of the embodiments described above.
Example ten:
referring to fig. 3, in the present embodiment, there is provided an air conditioner 1, the air conditioner 1 including: the control device of the above embodiment, wherein the control device is capable of executing a control method of heating defrosting including the air conditioner 1 of any one of the above embodiments.
The air conditioner 1 in the present embodiment includes, but is not limited to, a wall-mounted air conditioner, a cabinet air conditioner, a central air conditioner, and a mobile air conditioner.
When the air conditioner 1 in this embodiment performs the preliminary defrosting phase, the compressor is turned on, the four-way valve is turned off, the inner fan is turned off, and the outer fan is turned off when the preliminary defrosting phase is started.
When the air conditioner 1 in this embodiment starts to perform the deep defrosting stage, the compressor is turned on, the four-way valve is turned off, the inner fan is turned off, and the outer fan is continuously turned on.
Example eleven:
in this embodiment, a readable storage medium is provided, on which a program or an instruction is stored, which when executed by a processor, implements the steps of the method for controlling heating defrosting of an air conditioner according to any one of the embodiments described above.
The readable storage medium may be any combination of one or more readable medium, and the readable storage medium may be a readable signal medium or a readable storage medium, and the readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims (6)

1. A control method for heating and defrosting of an air conditioner, the control method comprising:
a defrosting stage, in which an external fan is controlled to continuously rotate to realize heating defrosting;
the outer fan is controlled to continuously rotate so as to realize heating and defrosting, and the method specifically comprises the following steps of: controlling the outer fan to rotate at a high speed;
the defrosting stage comprises the following steps:
a preliminary defrosting stage and a deep defrosting stage;
wherein the external fan does not rotate in the preliminary defrosting stage;
the outer fan continuously rotates in the deep defrosting stage;
wherein, before entering the preliminary defrosting stage, further comprises: judging whether the condition for entering the preliminary defrosting stage is met or not, wherein the condition for entering the preliminary defrosting stage comprises the following steps:
detecting a difference value between the temperature of the outer disc of the heat exchanger and the temperature of the outer ring, and recording the difference value as a first difference value;
if the first difference value is greater than or equal to a first set temperature, the temperature of the outer disc of the heat exchanger is less than a second set temperature, and the continuous running time of the compressor is greater than or equal to the first set time, entering the preliminary defrosting stage;
wherein, before entering the deep defrosting stage, the method further comprises: judging whether a condition for entering the deep defrosting stage is met or not, wherein the condition for entering the deep defrosting stage comprises the following steps:
after the preliminary defrosting stage, detecting the difference value between the temperature of the outer disc of the heat exchanger and the temperature of the outer ring, and marking the difference value as a second difference value;
the air conditioner recovers the heat recovery for a second set time;
after the second set time, detecting the difference between the temperature of the outer disc of the heat exchanger and the ambient temperature at the moment, and recording the difference as a third difference;
determining a difference magnitude of the second difference minus the third difference;
and if the result of the difference is smaller than or equal to a third set temperature, the third difference is larger than or equal to a fourth set temperature, and the temperature of the outer disc of the heat exchanger after the second set time is smaller than a fifth set temperature, entering the deep defrosting stage.
2. The control method according to claim 1, characterized in that it further comprises, after the defrosting phase:
detecting the temperature of an outer disc of the heat exchanger;
if the temperature of the outer disc of the heat exchanger is greater than or equal to a sixth set temperature, the defrosting stage is withdrawn;
and if the temperature of the outer disc of the heat exchanger is smaller than the sixth set temperature, continuing the defrosting stage.
3. The control method according to claim 1, characterized in that it further comprises, after the defrosting phase:
detecting the total defrosting duration of the defrosting stage;
if the total defrosting time length is greater than or equal to a third set time length, the defrosting stage is withdrawn;
and if the total defrosting duration is smaller than the third set duration, continuing the defrosting stage.
4. A control device, characterized in that the control device comprises:
a control module;
an deicing module;
wherein the control module includes a controller that controls the ice-melting module to implement the steps of the control method of heating and defrosting of the air conditioner according to any one of claims 1 to 3.
5. An air conditioner, characterized in that the air conditioner comprises:
the control device according to claim 4, wherein the control device is capable of executing a control method including heating defrosting of the air conditioner according to any one of claims 1 to 3.
6. A readable storage medium, wherein a program or instructions are stored on the readable storage medium, which when executed by a processor, implement the steps of the method for controlling heating defrosting of an air conditioner according to any one of claims 1 to 3.
CN202210473809.0A 2022-04-29 2022-04-29 Control method for heating defrosting of air conditioner, control device and medium Active CN114893885B (en)

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