CN114811849A - Air conditioner defrosting control method, air conditioner defrosting control device and storage medium - Google Patents
Air conditioner defrosting control method, air conditioner defrosting control device and storage medium Download PDFInfo
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- CN114811849A CN114811849A CN202210415403.7A CN202210415403A CN114811849A CN 114811849 A CN114811849 A CN 114811849A CN 202210415403 A CN202210415403 A CN 202210415403A CN 114811849 A CN114811849 A CN 114811849A
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- air conditioner
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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Abstract
The disclosure relates to an air conditioner defrosting control method, an air conditioner defrosting control device and a storage medium. The air conditioner defrosting control method comprises the following steps: monitoring the temperature of an external coil and determining the cycle duration of the air conditioner for carrying out cycle defrosting in the process of heating and carrying out forward cycle defrosting by the air conditioner; and controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting based on the temperature of the outer coil and the period duration. Through this disclosure, guarantee for the heat of user's heating and the heat that the defrosting needs can not influence each other to this air conditioner has both taken into account the heating effect and has also taken into account the defrosting effect simultaneously, and has promoted user's experience.
Description
Technical Field
The present disclosure relates to the field of air conditioner control technologies, and in particular, to an air conditioner defrosting control method, an air conditioner defrosting control device, and a storage medium.
Background
With the improvement of living standard of people, the air conditioner becomes an indispensable electrical appliance in the life of people.
When the air conditioner is operated for heating, the temperature of the outdoor heat exchanger is lower than the dew point temperature of air, and the air can be condensed on the surface of the outdoor heat exchanger. When the evaporation temperature of the outdoor heat exchanger is lower than 0 ℃, the surface of the outdoor heat exchanger can frost, and the frost blocks the channel of the outdoor heat exchanger, thereby increasing the air inlet resistance and reducing the heat exchange efficiency of the outdoor heat exchanger. Therefore, in the heating process of the air conditioner, the defrosting is required periodically.
In the related art, an air conditioner defrosts an outdoor heat exchanger by adopting a forward cycle defrosting mode or a reverse cycle defrosting mode. When the air conditioner adopts a forward circulation defrosting mode to defrost the outdoor heat exchanger, the defrosting effect is poor. When the air conditioner adopts the reverse cycle defrosting mode to defrost the outdoor heat exchanger, the fluctuation of the indoor temperature is easily caused, and the influence is brought to the user experience.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides an air conditioner defrost control method, an air conditioner defrost control apparatus, and a storage medium.
According to a first aspect of the embodiments of the present disclosure, there is provided an air conditioner defrosting control method, including:
monitoring the temperature of an external coil and determining the cycle duration of the air conditioner for carrying out cycle defrosting in the process of heating and carrying out forward cycle defrosting by the air conditioner; and controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting based on the temperature of the outer coil and the period duration.
In one embodiment, said controlling said air conditioner to alternately perform a forward cycle defrost and a reverse cycle defrost based on said outside coil temperature and said cycle duration comprises: in the process of forward circulating defrosting of the air conditioner, if the condition of reverse circulating defrosting is determined to be met based on the temperature of the external coil and the period duration, controlling the air conditioner to perform reverse circulating defrosting; and if the air conditioner completes reverse cycle defrosting, controlling the air conditioner to perform forward cycle defrosting again, monitoring the temperature of the outer coil again in the process of performing forward cycle defrosting by the air conditioner, and determining the cycle duration of the forward cycle defrosting by the air conditioner again.
In one embodiment, said determining that reverse cycle defrost conditions are met based on said outside coil temperature and said cycle duration comprises: determining a first period time of the air conditioner for forward circulating defrosting, and determining a first temperature decay rate of the temperature of the outer coil in the first period time, wherein the first period time is the first period time of the air conditioner for forward circulating defrosting; determining a second period time of the air conditioner for performing forward circulating defrosting, and determining a second temperature attenuation rate of the temperature of the outer coil in the second period time, wherein the second period time is any non-first period time; determining that a reverse cycle defrost condition is satisfied based on the first cycle duration, the second cycle duration, the first temperature decay rate, and the second temperature decay rate.
In one embodiment, the determining that a reverse cycle defrost condition is satisfied based on the first cycle time period, the second cycle time period, the first temperature decay rate, and the second temperature decay rate includes: determining a first ratio between the first cycle duration and the second cycle duration and determining a second ratio between the first temperature decay rate and the second temperature decay rate; determining that a reverse cycle defrost condition is satisfied based on the first ratio and the second ratio.
In one embodiment, if the first ratio is smaller than the first threshold and the second ratio is smaller than the second threshold, it is determined that the reverse cycle defrost condition is satisfied.
In one embodiment, the method for re-determining the period duration of the forward cycle defrosting of the air conditioner in the process of the forward cycle defrosting of the air conditioner comprises the following steps: and the first period time length when the forward cycle defrosting is carried out again is used as the first period time length again.
According to a second aspect of an embodiment of the present disclosure, there is provided an air conditioner defrosting control device including:
the processing unit is used for monitoring the temperature of the outer coil pipe and determining the cycle duration of the air conditioner for carrying out the circulating defrosting in the process of heating the air conditioner and carrying out the forward circulating defrosting; and the control unit is used for controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting based on the temperature of the outer coil and the period duration.
In one embodiment, the control unit controls the air conditioner to alternately perform the forward cycle defrosting and the reverse cycle defrosting based on the temperature of the external coil and the period duration in the following manner: in the process of forward circulating defrosting of the air conditioner, if the condition of reverse circulating defrosting is determined to be met based on the temperature of the external coil and the period duration, controlling the air conditioner to perform reverse circulating defrosting; and if the air conditioner completes reverse cycle defrosting, controlling the air conditioner to perform forward cycle defrosting again, monitoring the temperature of the outer coil again in the process of performing forward cycle defrosting by the air conditioner, and determining the cycle duration of the forward cycle defrosting by the air conditioner again.
In one embodiment, the control unit determines that a reverse cycle defrost condition is satisfied based on the outside coil temperature and the cycle duration by: determining a first period time of the air conditioner for forward circulating defrosting, and determining a first temperature decay rate of the temperature of the outer coil in the first period time, wherein the first period time is the first period time of the air conditioner for forward circulating defrosting; determining a second period time of the air conditioner for performing forward circulating defrosting, and determining a second temperature attenuation rate of the temperature of the outer coil in the second period time, wherein the second period time is any non-first period time; determining that a reverse cycle defrost condition is satisfied based on the first cycle duration, the second cycle duration, the first temperature decay rate, and the second temperature decay rate.
In one embodiment, the control unit determines that a reverse cycle defrost condition is satisfied based on the first cycle time period, the second cycle time period, the first temperature decay rate, and the second temperature decay rate as follows: determining a first ratio between the first cycle duration and the second cycle duration and determining a second ratio between the first temperature decay rate and the second temperature decay rate; determining that a reverse cycle defrost condition is satisfied based on the first ratio and the second ratio.
In one embodiment, if the first ratio is less than the first threshold and the second ratio is less than the second threshold, it is determined that the reverse cycle defrost condition is satisfied.
In one embodiment, the control unit determines the period length of the forward cycle defrosting of the air conditioner again in the process of the forward cycle defrosting of the air conditioner in the following way: and the first period time length when the forward cycle defrosting is carried out again is used as the first period time length again.
According to a third aspect of the embodiments of the present disclosure, there is provided an air conditioner defrosting control device including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: performing the method of the first aspect or any one of the embodiments of the first aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having instructions stored therein, which when executed by a processor of a terminal, enable the terminal to perform the method of the first aspect or any one of the implementation manners of the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: and in the process of heating and forward circulating defrosting by the air conditioner, monitoring the temperature of the outer coil and determining the cycle duration of circulating defrosting by the air conditioner. Furthermore, the forward circulating defrosting and the reverse circulating defrosting of the air conditioner can be alternately controlled according to the temperature of the air conditioner external coil and the cycle duration of the air conditioner for circulating defrosting. Based on this, at the in-process that the air conditioner heated, guarantee for the heat of user's heating and the heat that the defrosting needs can not influence each other to this air conditioner has both considered the heating effect and has also considered the defrosting effect simultaneously, and has promoted user's experience.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating an air conditioner defrost control method according to an exemplary embodiment.
Fig. 2 is a schematic flow chart illustrating a process for controlling an air conditioner to alternately perform a forward cycle defrost and a reverse cycle defrost according to an exemplary embodiment.
FIG. 3 is a flow chart illustrating a method of determining that a reverse cycle defrost condition is satisfied in accordance with an exemplary embodiment.
FIG. 4 is a flow chart illustrating a determination that a reverse cycle defrost condition is satisfied in accordance with an exemplary embodiment.
Fig. 5 is a flowchart illustrating a method of re-determining a period duration for a forward cycle defrost of an air conditioner according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating an air conditioner defrost control apparatus according to an exemplary embodiment.
FIG. 7 is a block diagram illustrating an apparatus for coil temperature control according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.
In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only a subset of the embodiments of the present disclosure, and not all embodiments. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure. Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The air conditioner defrosting control method provided by the embodiment of the disclosure can be applied to a working scene of heating of an air conditioner, and is suitable for air conditioner products with a heating function and other household appliances capable of realizing heating through refrigeration and compression cycles.
With the improvement of living standard of people, the air conditioner becomes an indispensable electrical appliance in the life of people. When the air conditioner is in the heating operation process in winter and the temperature of the outdoor heat exchanger is lower than the dew point temperature of air, moisture in the air can be condensed on the heat exchanger. When the evaporation temperature of the heat exchanger is lower than 0 ℃, the surface of the heat exchanger can generate a frosting phenomenon. Therefore, the air conditioner needs to be defrosted to ensure that normal use is not affected.
In the related art, the air conditioner performs reverse cycle defrosting (i.e., the outdoor unit is defrosted by switching the direction of the four-way valve) or bypass defrosting (the outdoor unit is defrosted by opening the bypass branch), and whether to quit defrosting is judged by monitoring defrosting time or a certain parameter, such as the temperature of an external coil pipe. Under the condition, the air conditioner has the defects that an auxiliary means is lacked in the defrosting process to accelerate the defrosting efficiency, so that the defrosting process is single, the efficiency is low, the indoor temperature fluctuation is easily caused, and the bad experience is brought to users.
In the related art, in the process of defrosting the air conditioner by adopting a forward circulation mode, a bypass pipeline is used for heating and simultaneously providing partial heat for a condenser of an outdoor unit to defrost. Under this condition, the air conditioner not only need provide the heat and carry out the environmental heating, still need provide the partial heat that originally is used for the heating and defrost, causes outer machine defrosting unclean easily, influences the normal heating of air conditioner.
In view of the above, the present disclosure provides an air conditioner defrosting control method, which may monitor the temperature of an external coil of an air conditioner and determine the cycle duration of the air conditioner for performing cyclic defrosting. And controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting at proper time based on the temperature of the external coil and the period duration. Therefore, in the process of heating by the air conditioner, the heat for heating the user and the heat required by defrosting can be ensured not to influence each other, so that the air conditioner not only gives consideration to the heating effect, but also gives consideration to the defrosting effect, and the user experience is improved. In addition, the method is based on the temperature of the external coil and the period duration, and the air conditioner is adaptively controlled to alternately perform forward circulating defrosting and reverse circulating defrosting, so that compared with a defrosting mode of the air conditioner heat exchanger in the related art, the defrosting control method of the air conditioner provided by the disclosure is more flexible and intelligent.
Fig. 1 is a flowchart illustrating an air conditioner defrost control method according to an exemplary embodiment, where the air conditioner defrost control method is used in a terminal, as shown in fig. 1, and includes the following steps.
In step S11, during heating and forward cycle defrosting of the air conditioner, the temperature of the external coil is monitored and the period of time during which the air conditioner performs cycle defrosting is determined.
In the embodiment of the disclosure, in the process of heating by the air conditioner, when the air conditioner meets the defrosting condition, the air conditioner performs forward cycle defrosting. For example, after the air conditioner enters the heating mode or the defrosting mode for about 5 minutes, the judgment is made according to the maximum difference between the temperature of the external coil and the indoor temperature. When the difference between the temperature of the external coil and the indoor temperature is reduced by more than 5 degrees and lasts for more than 3 minutes, the accumulated running time of the compressor exceeds 45 minutes, and the temperature of the external coil is less than 48 degrees, the air conditioner meets the defrosting condition, and then the forward circulation defrosting is carried out.
In this disclosure, when the air conditioner satisfies the defrosting condition, the air conditioner preferentially performs the forward cycle defrosting in order to prevent the indoor ambient temperature from decreasing, and brings uncomfortable experience to the user.
In the embodiment of the disclosure, the air conditioner monitors the temperature of the outer coil pipe through the indoor pipe temperature sensor, and determines the current state of the air conditioner according to the monitored temperature of the outer coil pipe, so as to adopt corresponding control operation. For example, in the process of air conditioning refrigeration, when the temperature of the external coil pipe is too low, the air conditioner can automatically turn on the anti-freezing function, so as to prevent the refrigerant from freezing due to too low temperature in the pipe. At the in-process that the air conditioner heated, when outer coil pipe temperature was not high enough, the air conditioner can open automatically and prevent the cold wind function, and the control room fan does not start, prevents that the cold wind from blowing to the user.
In the embodiment of the disclosure, the cycle duration of the air conditioner for performing the cyclic defrosting is influenced by factors such as the indoor environment temperature, the control circuit structure of the air conditioning system, the frosting severity and the like. Generally, the cycle time of the air conditioner for circulating defrosting generally needs 3-10 minutes.
In step S12, the air conditioner is controlled to alternately perform the forward cycle defrost and the reverse cycle defrost based on the outside coil temperature and the cycle duration.
In the disclosure, during the heating and forward circulating defrosting process of the air conditioner, the temperature of the external coil pipe of the air conditioner can be monitored, and the cycle duration of the circulating defrosting of the air conditioner can be determined. And controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting at proper time based on the temperature of the external coil and the period duration. Therefore, in the process of heating by the air conditioner, the heat for heating the user and the heat required by defrosting can be ensured not to influence each other, so that the air conditioner not only gives consideration to the heating effect, but also gives consideration to the defrosting effect, and the user experience is improved. In addition, the method is based on the temperature of the external coil and the period duration, and can adaptively control the air conditioner to perform alternation of forward cycle defrosting and reverse cycle defrosting, so that compared with a defrosting mode of an air conditioner heat exchanger in the related art, the defrosting control method for the air conditioner provided by the disclosure is more flexible and intelligent.
In the following disclosed embodiments, a detailed explanation will be given of how the air conditioner alternately performs the forward cycle defrosting and the reverse cycle defrosting.
Fig. 2 is a schematic flow chart illustrating a method for controlling an air conditioner to alternately perform a forward cycle defrost and a reverse cycle defrost according to an exemplary embodiment, where the method for controlling an air conditioner to alternately perform a forward cycle defrost and a reverse cycle defrost based on an external coil temperature and a cycle duration, as shown in fig. 2, includes the following steps.
In step S21, during the forward cycle defrosting of the air conditioner, the temperature of the external coil is monitored to determine the duration of the defrosting cycle.
In step S22, it is determined that the reverse cycle defrosting condition is satisfied.
In the embodiment of the disclosure, in the process of forward cycle defrosting of the air conditioner, whether the air conditioner meets the condition of reverse cycle defrosting is judged according to the temperature of the external coil monitored by the air conditioner controller and the determined cycle defrosting period duration. And if the reverse cycle defrosting condition is determined to be met, controlling the air conditioner to enter a reverse cycle defrosting mode and switching from the forward cycle defrosting mode to the reverse cycle defrosting mode. And if the reverse circulation defrosting condition is determined not to be met, controlling the air conditioner to continue to carry out forward circulation defrosting.
In step S23, the air conditioner performs reverse cycle defrosting.
In step S24, if the air conditioner completes reverse cycle defrosting, the air conditioner is controlled to perform forward cycle defrosting again, and the temperature of the external coil is monitored again during the forward cycle defrosting of the air conditioner, and the cycle duration of the forward cycle defrosting of the air conditioner is determined again. And if the air conditioner does not finish reverse circulation defrosting, controlling the air conditioner to continuously perform reverse circulation defrosting.
In the disclosure, in the process of forward cycle defrosting of the air conditioner, if it is determined that the reverse cycle defrosting condition is met based on the temperature of the external coil and the period duration, the air conditioner is controlled to perform reverse cycle defrosting. And if the air conditioner completes reverse cycle defrosting, controlling the air conditioner to perform forward cycle defrosting again, monitoring the temperature of the outer coil again in the process of performing forward cycle defrosting by the air conditioner, and re-determining the cycle duration of the forward cycle defrosting by the air conditioner. Through this air conditioner can be by oneself switch over each other between forward circulation defrosting state and reverse circulation defrosting state for the heating effect and the defrosting effect of air conditioner can all be promoted.
In the following disclosure, for convenience of description, a period of time during which the air conditioner performs the forward cycle defrosting for the first time is referred to as a first period of time, a period of time during which the air conditioner performs the forward cycle defrosting for the second time or later is referred to as a second period of time, a rate of change of the temperature of the air conditioner external coil in the first period of time is referred to as a first temperature decay rate, and a rate of change of the temperature of the air conditioner external coil in the second period of time is referred to as a second temperature decay rate.
FIG. 3 is a flow chart illustrating a method for determining that a reverse cycle defrost condition is met, as shown in FIG. 3, based on the outside coil temperature and the cycle length, including the following steps, in accordance with an exemplary embodiment.
In step S31, a first period of time during which the air conditioner performs a forward cycle defrost is determined, and a first temperature decay rate of the external coil temperature during the first period of time is determined.
The first period time is the first period time of the air conditioner for forward circulating defrosting.
In the embodiment of the disclosure, the first period duration for the air conditioner to perform forward cycle defrosting is determined to be T 1 And determining the temperature of the external coil at T 1 First rate of temperature decay
Wherein the content of the first and second substances,
representing the rate of change of the outer coil temperature over the first period duration,
indicating the difference in the temperature change of the outer coil.
In step S32, a second cycle duration for the air conditioner to perform the forward cycle defrost is determined, and a second temperature decay rate for the outside coil temperature during the second cycle duration is determined.
And the second period duration is any one non-first period duration.
In the disclosed embodiment, it is determined that the air conditioner is in processThe second cycle of defrosting to cycle is of duration t n And determining the temperature of the external coil at T n First temperature decay rate of
n is any integer more than or equal to 2. Wherein the content of the first and second substances,
indicating the rate of change of the temperature of the outer coil over the duration of the second period, Δ T outer coil temperature n Indicating the difference in the temperature change of the outer coil.
In step S33, it is determined that a reverse cycle defrost condition is satisfied based on the first cycle time period, the second cycle time period, the first temperature decay rate, and the second temperature decay rate.
In the present disclosure, a first cycle duration for a forward cycle defrost of an air conditioner is determined, and a first temperature decay rate of an external coil temperature over the first cycle duration is determined. And determining the second period duration of the forward circulating defrosting of the air conditioner, and determining a second temperature decay rate of the temperature of the external coil in the second period duration. And determining that the reverse cycle defrosting condition is met based on the first period time, the second period time, the first temperature decay rate and the second temperature decay rate.
FIG. 4 is a flowchart illustrating a method of determining that a reverse cycle defrost condition is satisfied, as shown in FIG. 4, based on a first cycle time period, a second cycle time period, a first temperature decay rate, and a second temperature decay rate, including the following steps, according to an exemplary embodiment.
In step S41, a first ratio between the first cycle time period and the second cycle time period is determined, and a second ratio between the first temperature decay rate and the second temperature decay rate is determined.
In the disclosed embodiment, the first period duration T is determined 1 And a second period duration T n First ratio therebetween
And determining a first temperature decay rate
And a second temperature decay rate
Second ratio therebetween
In the present disclosure, if the first ratio is smaller than the first threshold and the second ratio is smaller than the second threshold, it is determined that the reverse cycle defrosting condition is satisfied.
Wherein, assume the first threshold value is a and the second threshold value is B.
In step S42, it is determined that the reverse cycle defrost condition is satisfied based on the first ratio and the second ratio.
In the embodiment of the disclosure, when the air conditioner starts to operate the nth cycle defrosting cycle, n is greater than or equal to 2, the air conditioner controller performs real-time judgment, and simultaneously meets the following requirements, so that the air conditioner can be determined to meet the reverse cycle defrosting condition. The conditions for the air conditioner to enter reverse cycle defrosting include:
1. the period duration T of forward cycle defrosting of the nth air conditioner n The period duration T of the forward cycle defrosting with the 1 st air conditioner 1 Make a comparison to satisfy
The value of A is generally determined according to the configuration size of the air conditioning system. In the embodiment of the disclosure, the value range of a is 85-95%.
2. Temperature attenuation rate of inner and outer coil pipes in cycle duration of forward circulating defrosting of nth-time air conditioner
Inner and outer coil temperature decay rate during period of forward circulation defrosting with 1 st air conditioner
Make a comparison to satisfy
The value of B is generally determined according to the configuration size of the air conditioning system. In the embodiment of the present disclosure, the value range of B is 90% to 95%.
In the present disclosure, a first ratio between a first cycle time period and a second cycle time period is determined, and a second ratio between a first temperature decay rate and a second temperature decay rate is determined. And determining that the reverse cycle defrosting condition is met based on the first ratio and the second ratio. And if the first ratio is smaller than the first threshold value and the second ratio is smaller than the second threshold value, determining that the reverse cycle defrosting condition is met. According to the method for judging whether the air conditioner enters the reverse circulation defrosting mode, the time for entering the reverse circulation defrosting is finally determined through multiple comparison results, instead of judging only through one comparison result, so that misjudgment caused by random fluctuation of the temperature of the outer coil is avoided, and the judgment accuracy is improved.
Fig. 5 is a flowchart illustrating a method for re-determining a cycle duration of a forward cycle defrost of an air conditioner according to an exemplary embodiment, where the method for re-determining a cycle duration of a forward cycle defrost of an air conditioner during the forward cycle defrost of the air conditioner, as shown in fig. 5, includes the following steps.
In step S51, the air conditioner completes reverse cycle defrosting.
In step S52, the first cycle length when the forward cycle defrosting is performed again.
And taking the first period time length when the forward cycle defrosting is carried out again as the first period time length again.
In the present disclosure, after the air conditioner completes the reverse cycle defrosting, the first cycle duration when the forward cycle defrosting is performed again, and all the operations in the above disclosed embodiments are repeated.
In the embodiment of the disclosure, the air conditioner firstly carries out forward cycle defrosting, and synchronously calculates and records the temperature attenuation rate of the external coil. When the air conditioner performs n times of forward circulation defrosting operation cycles and the temperature attenuation rate of the outer coil pipe meets a certain value, the air conditioner can be directly switched into a reverse circulation defrosting mode next time, and reverse circulation defrosting is started until frost on the surface of the heat exchanger of the air conditioner is removed completely. After the air conditioner clears the frost on the surface of the heat exchanger, the air conditioner is switched to the forward circulation defrosting mode again, and the forward circulation defrosting is started.
Through the above-mentioned disclosed embodiment, at the in-process that the air conditioner heats, both guaranteed the heat for user's heating, also guaranteed the required heat of air conditioner defrosting to this has both considered the heating effect and has also considered the defrosting effect simultaneously, and has promoted user's experience. In addition, the method is based on the temperature of the external coil and the period duration, and the air conditioner is adaptively controlled to alternately perform forward circulating defrosting and reverse circulating defrosting, so that the air conditioner is more flexible and intelligent in adjusting the self defrosting mode.
Based on the same conception, the embodiment of the disclosure also provides an air conditioner defrosting control device.
It can be understood that, in order to implement the above functions, the air conditioner defrosting control device provided by the embodiment of the present disclosure includes a hardware structure and/or a software module corresponding to the execution of each function. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Fig. 6 is a block diagram illustrating an air conditioner defrost control apparatus according to an exemplary embodiment. Referring to fig. 6, the apparatus 100 includes a processing unit 101 and a control unit 102.
The processing unit 101 is configured to monitor the temperature of the external coil and determine the cycle duration of the air conditioner for performing the cyclic defrosting during the heating and forward cyclic defrosting processes of the air conditioner; and the control unit 102 is used for controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting based on the temperature of the external coil and the period duration.
In one embodiment, the control unit 102 controls the air conditioner to alternately perform the forward cycle defrost and the reverse cycle defrost based on the outside coil temperature and the cycle duration as follows: in the process of forward circulating defrosting of the air conditioner, if the condition of reverse circulating defrosting is determined to be met based on the temperature of the outer coil and the period duration, controlling the air conditioner to perform reverse circulating defrosting; and if the air conditioner completes reverse cycle defrosting, controlling the air conditioner to perform forward cycle defrosting again, monitoring the temperature of the outer coil again in the process of performing forward cycle defrosting by the air conditioner, and re-determining the cycle duration of the forward cycle defrosting by the air conditioner.
In one embodiment, the control unit 102 determines that the reverse cycle defrost condition is satisfied based on the outside coil temperature and the cycle duration as follows: determining a first period time of the air conditioner for forward circulating defrosting, and determining a first temperature attenuation rate of the temperature of the outer coil in the first period time, wherein the first period time is the first period time of the air conditioner for forward circulating defrosting; determining the second period time of the air conditioner for forward circulating defrosting, and determining a second temperature attenuation rate of the temperature of the outer coil in the second period time, wherein the second period time is any one non-first period time; and determining that the reverse cycle defrosting condition is met based on the first period time, the second period time, the first temperature decay rate and the second temperature decay rate.
In one embodiment, the control unit 102 determines that the reverse cycle defrost condition is satisfied based on the first cycle time period, the second cycle time period, the first temperature decay rate, and the second temperature decay rate as follows: determining a first ratio between the first period duration and the second period duration, and determining a second ratio between the first temperature decay rate and the second temperature decay rate; and determining that the reverse cycle defrosting condition is met based on the first ratio and the second ratio.
In one embodiment, if the first ratio is smaller than the first threshold and the second ratio is smaller than the second threshold, it is determined that the reverse cycle defrost condition is satisfied.
In one embodiment, the control unit 102 determines the period length of the forward cycle defrosting of the air conditioner again during the forward cycle defrosting of the air conditioner in the following manner: and the first period time length when the forward cycle defrosting is carried out again is used as the first period time length again.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
FIG. 7 is a block diagram illustrating an apparatus for coil temperature control according to an exemplary embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 7, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the apparatus 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 204 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor component 214 may detect the open/closed status of the device 200, the relative positioning of components, such as a display and keypad of the device 200, the sensor component 214 may also detect a change in the position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in the temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, comprising instructions executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.
It will be further appreciated that while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.
Claims (9)
1. An air conditioner defrosting control method is characterized by comprising the following steps:
monitoring the temperature of an outer coil pipe and determining the cycle duration of the air conditioner for carrying out circulating defrosting in the process of heating and carrying out forward circulating defrosting by the air conditioner;
and controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting based on the temperature of the outer coil and the period duration.
2. The method of claim 1, wherein said controlling said air conditioner to alternate between a forward cycle defrost and a reverse cycle defrost based on said outside coil temperature and said cycle duration comprises:
in the process of forward circulating defrosting of the air conditioner, if the condition of reverse circulating defrosting is determined to be met based on the temperature of the external coil and the period duration, controlling the air conditioner to perform reverse circulating defrosting;
and if the air conditioner completes reverse cycle defrosting, controlling the air conditioner to perform forward cycle defrosting again, monitoring the temperature of the outer coil again in the process of performing forward cycle defrosting by the air conditioner, and determining the cycle duration of the forward cycle defrosting by the air conditioner again.
3. The method of claim 2, wherein said determining that a reverse cycle defrost condition is met based on said outside coil temperature and said cycle duration comprises:
determining a first period time of the air conditioner for forward circulating defrosting, and determining a first temperature decay rate of the temperature of the outer coil in the first period time, wherein the first period time is the first period time of the air conditioner for forward circulating defrosting;
determining a second period time of the air conditioner for performing forward circulating defrosting, and determining a second temperature attenuation rate of the temperature of the outer coil in the second period time, wherein the second period time is any non-first period time;
determining that a reverse cycle defrost condition is satisfied based on the first cycle time, the second cycle time, the first temperature decay rate, and the second temperature decay rate.
4. The method of claim 3, wherein determining that a reverse cycle defrost condition is satisfied based on the first cycle time period, the second cycle time period, the first temperature decay rate, and the second temperature decay rate comprises:
determining a first ratio between the first cycle duration and the second cycle duration and determining a second ratio between the first temperature decay rate and the second temperature decay rate;
determining that a reverse cycle defrost condition is satisfied based on the first ratio and the second ratio.
5. The method of claim 4, wherein the first ratio is less than a first threshold and the second ratio is less than a second threshold, and wherein the reverse cycle defrost condition is determined to be satisfied.
6. The method according to any one of claims 3 to 5, wherein the re-determining the period duration of the forward cycle defrosting of the air conditioner during the forward cycle defrosting of the air conditioner comprises:
and the first period time length when the forward cycle defrosting is carried out again is used as the first period time length again.
7. An air conditioner defrost control apparatus, wherein the method of any of claims 1-6 is performed, comprising:
the processing unit is used for monitoring the temperature of the outer coil pipe and determining the cycle duration of the air conditioner for carrying out the circulating defrosting in the process of heating the air conditioner and carrying out the forward circulating defrosting;
and the control unit is used for controlling the air conditioner to alternately perform forward circulation defrosting and reverse circulation defrosting based on the temperature of the outer coil and the period duration.
8. An air conditioner defrosting control device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the method of any one of claims 1 to 6.
9. A storage medium having stored therein instructions that, when executed by a processor, enable the processor to perform the method of any one of claims 1 to 6.
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