CN110848885B - Air conditioner, defrosting method thereof and computer readable storage medium - Google Patents
Air conditioner, defrosting method thereof and computer readable storage medium Download PDFInfo
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- CN110848885B CN110848885B CN201911211984.7A CN201911211984A CN110848885B CN 110848885 B CN110848885 B CN 110848885B CN 201911211984 A CN201911211984 A CN 201911211984A CN 110848885 B CN110848885 B CN 110848885B
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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
- 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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses an air conditioner, a defrosting method thereof and a computer readable storage medium, wherein the defrosting method of the air conditioner comprises the following steps: when the air conditioner is in a defrosting state, acquiring the inlet temperature and the outlet temperature of a condenser in the air conditioner; judging whether the inlet temperature and the outlet temperature reach preset conditions for finishing defrosting of a condenser in the air conditioner, wherein the preset conditions are generated based on the external environment temperature of the external environment of the outdoor unit of the air conditioner; and if the preset condition is reached, ending the defrosting operation of the condenser in the air conditioner. According to the invention, because the preset condition is correlated with the external environment temperature, the influence of the heat radiation phenomenon of the outdoor heat exchanger during defrosting on defrosting is fully considered by judging whether the inlet temperature and the outlet temperature reach the preset condition as the condition for judging to finish defrosting, the defrosting time can be accurately judged, and the defrosting effect is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a defrosting method of the air conditioner and a computer readable storage medium.
Background
With the improvement of living standard of people, the air conditioner becomes a standard distributor in a household. In the heating operation process of the air conditioner, frost is easily formed on a condenser in an outdoor unit under the outdoor low-temperature and high-humidity environment, and the heating effect is greatly reduced along with the increase of the frost formation amount. Therefore, in order to ensure the heating effect of the air conditioner, the defrosting operation of the condenser is performed first, and heating is performed after the defrosting operation is completed.
At present, the condition that defrosting of an outdoor unit is finished is usually taken as the condition that the outlet temperature of a condenser reaches a set value, but the phenomenon that heat radiation is carried out between the heat exchanger of the outdoor unit and the external environment during defrosting exists, and the outlet temperature for finishing defrosting is different along with the difference of the external environment temperature; the single set value is used as the condition for judging the end of defrosting, which can cause inaccurate judgment, and the problem that defrosting is finished but still in a defrosting state or incomplete occurs, and the defrosting effect is poor.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a defrosting method thereof and a computer readable storage medium, and aims to solve the problems that the condition for finishing defrosting of the air conditioner is inaccurate and the defrosting effect is poor in the prior art.
In order to achieve the above object, the present invention provides a defrosting method of an air conditioner, which comprises the following steps:
when the air conditioner is in a defrosting state, acquiring the inlet temperature and the outlet temperature of a condenser in the air conditioner;
judging whether the inlet temperature and the outlet temperature reach preset conditions for finishing defrosting of a condenser in the air conditioner, wherein the preset conditions are generated based on the external environment temperature of the external environment of the outdoor unit of the air conditioner;
and if the preset condition is reached, ending the defrosting operation of the condenser in the air conditioner.
In one embodiment, the step of determining whether the inlet temperature and the outlet temperature reach a preset condition for finishing defrosting of a condenser in the air conditioner comprises:
performing difference operation between the inlet temperature and the outlet temperature to generate a difference result;
comparing the difference result with the preset condition, and judging whether the difference result is matched with the preset condition;
and if the difference result is matched with the preset condition, judging that the preset condition for finishing defrosting of the condenser in the air conditioner is reached.
In an embodiment, the step of determining whether the difference result matches the preset condition includes:
and if the difference result is not matched with the preset condition, executing the step of acquiring the inlet temperature and the outlet temperature of the condenser in the air conditioner until the difference result is matched with the preset condition.
In an embodiment, the step of determining whether the difference result matches the preset condition includes:
judging whether the difference result is greater than or equal to a reference value corresponding to the preset condition;
if the difference value is larger than or equal to the reference value corresponding to the preset condition, judging that the difference value result is matched with the preset condition;
and if the difference result is smaller than the reference value corresponding to the preset condition, judging that the difference result is not matched with the preset condition.
In one embodiment, the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in a defrosting state comprises the following steps:
acquiring the external environment temperature of the external environment of the outdoor unit of the air conditioner;
and generating the preset condition according to the external environment temperature.
In an embodiment, the step of generating the preset condition according to the external environment temperature includes:
acquiring preset compensation parameters and a defrosting coefficient corresponding to the external environment temperature;
and generating the preset condition according to the preset compensation parameter, the defrosting coefficient and the external environment temperature.
In an embodiment, the step of generating the preset condition according to the preset compensation parameter, the defrosting coefficient and the external environment temperature includes:
calling a preset formula, and transmitting the preset compensation parameter, the defrosting coefficient and the external environment temperature to the preset formula to generate the preset condition;
and calculating the preset compensation parameter, the defrosting coefficient and the external environment temperature which are transmitted to the preset formula to generate a reference value corresponding to the preset condition.
In one embodiment, the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in a defrosting state comprises the following steps:
judging whether the operation mode of the air conditioner is a heating mode or not, and if the operation mode is the heating mode, judging whether a preset defrosting identifier is in an activated state or not;
and if the preset defrosting identifier is in an activated state, judging that the air conditioner is in a defrosting state.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a defrosting program of the air conditioner stored in the memory and operable on the processor, wherein the defrosting program of the air conditioner, when executed by the processor, implements the defrosting method of the air conditioner as described above.
To achieve the above object, the present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a defrosting program of an air conditioner, and the defrosting program of the air conditioner, when executed by a processor, implements the defrosting method of the air conditioner as described above.
According to the air conditioner, the defrosting method and the computer readable storage medium thereof, when the air conditioner is in a defrosting state, the inlet temperature and the outlet temperature of a condenser in the air conditioner are detected, whether the inlet temperature and the outlet temperature reach preset conditions or not is judged, and the preset conditions are conditions for finishing defrosting of the condenser in the air conditioner according to the representation generated by the external environment temperature in advance; and if the inlet temperature and the outlet temperature reach preset conditions, finishing defrosting the condenser. Because the preset condition has relevance with the external environment temperature, the influence of the heat radiation phenomenon of the outdoor heat exchanger during defrosting on defrosting is fully considered by judging whether the inlet temperature and the outlet temperature reach the preset condition or not as a condition for judging to finish defrosting, the defrosting time can be accurately judged, and the defrosting effect is improved.
Drawings
FIG. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a defrosting method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a defrosting method of an air conditioner according to a second embodiment of the present invention;
fig. 4 is a flow chart illustrating a defrosting method of an air conditioner according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: detecting the inlet temperature and the outlet temperature of a condenser in the air conditioner when the air conditioner is in a defrosting state, and judging whether the inlet temperature and the outlet temperature reach preset conditions, wherein the preset conditions are conditions for finishing defrosting of the condenser in the air conditioner according to a representation generated in advance according to the external environment temperature; and if the inlet temperature and the outlet temperature reach preset conditions, finishing defrosting the condenser. Because the preset condition has relevance with the external environment temperature, the influence of the heat radiation phenomenon of the outdoor heat exchanger during defrosting on defrosting is fully considered by judging whether the inlet temperature and the outlet temperature reach the preset condition or not as a condition for judging to finish defrosting, the defrosting time can be accurately judged, and the defrosting effect is improved.
As one implementation, the air conditioner may be as shown in fig. 1.
The embodiment of the invention relates to an air conditioner, which comprises: a processor 101, such as a CPU, a memory 102 and a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a memory 103, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and a defrosting program of an air conditioner; and the processor 101 may be configured to call a defrosting program of the air conditioner stored in the memory 102, and perform the following operations:
when the air conditioner is in a defrosting state, acquiring the inlet temperature and the outlet temperature of a condenser in the air conditioner;
judging whether the inlet temperature and the outlet temperature reach preset conditions for finishing defrosting of a condenser in the air conditioner, wherein the preset conditions are generated based on the external environment temperature of the external environment of the outdoor unit of the air conditioner;
and if the preset condition is reached, ending the defrosting operation of the condenser in the air conditioner.
In one embodiment, the step of determining whether the inlet temperature and the outlet temperature reach a preset condition for finishing defrosting of a condenser in the air conditioner comprises:
performing difference operation between the inlet temperature and the outlet temperature to generate a difference result;
comparing the difference result with the preset condition, and judging whether the difference result is matched with the preset condition;
and if the difference result is matched with the preset condition, judging that the preset condition for finishing defrosting of the condenser in the air conditioner is reached.
In an embodiment, after the step of determining whether the difference result matches the preset condition, the processor 101 may be configured to call a defrosting program of the air conditioner stored in the memory 102, and perform the following operations:
and if the difference result is not matched with the preset condition, executing the step of acquiring the inlet temperature and the outlet temperature of the condenser in the air conditioner until the difference result is matched with the preset condition.
In an embodiment, the step of determining whether the difference result matches the preset condition includes:
judging whether the difference result is greater than or equal to a reference value corresponding to the preset condition;
if the difference value is larger than or equal to the reference value corresponding to the preset condition, judging that the difference value result is matched with the preset condition;
and if the difference result is smaller than the reference value corresponding to the preset condition, judging that the difference result is not matched with the preset condition.
In an embodiment, before the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in the defrosting state, the processor 101 may be configured to call a defrosting program of the air conditioner stored in the memory 102, and perform the following operations:
acquiring the external environment temperature of the external environment of the outdoor unit of the air conditioner;
and generating the preset condition according to the external environment temperature.
In an embodiment, the step of generating the preset condition according to the external environment temperature includes:
acquiring preset compensation parameters and a defrosting coefficient corresponding to the external environment temperature;
and generating the preset condition according to the preset compensation parameter, the defrosting coefficient and the external environment temperature.
In an embodiment, the step of generating the preset condition according to the preset compensation parameter, the defrosting coefficient and the external environment temperature includes:
calling a preset formula, and transmitting the preset compensation parameter, the defrosting coefficient and the external environment temperature to the preset formula to generate the preset condition;
and calculating the preset compensation parameter, the defrosting coefficient and the external environment temperature which are transmitted to the preset formula to generate a reference value corresponding to the preset condition.
In an embodiment, before the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in the defrosting state, the processor 101 may be configured to call a defrosting program of the air conditioner stored in the memory 102, and perform the following operations:
judging whether the operation mode of the air conditioner is a heating mode or not, and if the operation mode is the heating mode, judging whether a preset defrosting identifier is in an activated state or not;
and if the preset defrosting identifier is in an activated state, judging that the air conditioner is in a defrosting state.
According to the scheme, when the air conditioner is in a defrosting state, the inlet temperature and the outlet temperature of the condenser in the air conditioner are detected, and whether the inlet temperature and the outlet temperature reach preset conditions or not is judged, wherein the preset conditions are conditions for finishing defrosting of the condenser in the air conditioner according to the representation generated in advance according to the external environment temperature; and if the inlet temperature and the outlet temperature reach preset conditions, finishing defrosting the condenser. Because the preset condition has relevance with the external environment temperature, the influence of the heat radiation phenomenon of the outdoor heat exchanger during defrosting on defrosting is fully considered by judging whether the inlet temperature and the outlet temperature reach the preset condition or not as a condition for judging to finish defrosting, the defrosting time can be accurately judged, and the defrosting effect is improved.
Based on the hardware architecture of the air conditioner, the embodiment of the defrosting method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a defrosting method of an air conditioner according to the present invention, the defrosting method of an air conditioner includes the steps of:
step S10, when the air conditioner is in a defrosting state, acquiring the inlet temperature and the outlet temperature of a condenser in the air conditioner;
the defrosting method of the air conditioner is applied to the control center of the air conditioner, and is suitable for the control center to accurately finish the defrosting operation of the condenser in the air conditioner according to the relation between the inlet temperature and the outlet temperature of the condenser and the preset condition generated by the external environment temperature in the heating mode of the air conditioner. Specifically, the air conditioner operation mode includes at least a heating mode in which air of low temperature and high humidity outside is easily condensed on a condenser of the outdoor unit, a frosting phenomenon occurs, and a heating effect is affected as the amount of frosting increases, so that a defrosting operation is required. Heating is not carried out in the defrosting process, and the defrosting operation needs to be finished in time after defrosting is finished so as to recover heating.
Understandably, judging whether defrosting needs to be finished or not, and taking the premise of determining that the air conditioner is in a defrosting state currently; therefore, the step of detecting the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in the defrosting state includes, before:
step a1, judging whether the operation mode of the air conditioner is a heating mode, and if the operation mode is the heating mode, reading and judging whether a preset defrosting identifier is in an activated state;
step a2, if the preset defrosting identifier is in an activated state, determining that the air conditioner is in a defrosting state.
Further, the mode identifiers presented in the control center are different depending on the operation mode of the air conditioner. Therefore, the control center can judge whether the current operation mode of the air conditioner is the heating mode according to the mode identifier. In addition, the control center is also preset with a preset defrosting identifier for representing that the air conditioner is in a defrosting state, and when the air conditioner is in the defrosting state, the preset defrosting identifier is in an activated state; and when the air conditioner is in the non-defrosting state, the preset defrosting identifier is in the non-activated state. If the current operation mode of the air conditioner is determined to be the heating mode through the mode identifier, continuously detecting whether the preset defrosting state identifier is in an activated state; and if the air conditioner is in the activated state, judging that the air conditioner is in a defrosting state.
Furthermore, the outdoor unit of the air conditioner is also provided with a first temperature sensor and a second temperature sensor for respectively detecting the inlet temperature and the outlet temperature of the condenser in the outdoor unit. The first temperature sensor and the second temperature sensor are respectively in communication connection with the control center, and the control center generates a detection instruction to the first sensor and the second sensor after determining that the air conditioner is in a defrosting state, so that the first sensor and the second sensor respectively detect the inlet temperature and the outlet temperature of the condenser based on the detection instruction and return the detected inlet temperature and outlet temperature to the control center. The control center judges whether to finish the defrosting operation of the condenser in the air conditioner according to the inlet temperature and the outlet temperature of the returned condenser.
Step S20, determining whether the inlet temperature and the outlet temperature reach a preset condition for finishing defrosting of a condenser in the air conditioner, wherein the preset condition is generated based on an external environment temperature of an external environment where an outdoor unit of the air conditioner is located;
it is understood that the defrosting of the condenser of the outdoor unit of the air conditioner is realized by the high-temperature refrigerant flowing in the condensation pipe of the condenser. The defrosting of the condenser by the high-temperature refrigerant is affected by the external temperature, and under the condition of lower external temperature, the more heat the high-temperature refrigerant radiates to the outside, the relatively poorer defrosting effect and longer defrosting time are needed. On the contrary, if the outside temperature is higher, the heat radiated to the outside by the high-temperature refrigerant is less, the defrosting effect is relatively better, and the defrosting time is shorter. Therefore, the time required for defrosting is different according to the difference of the external temperature. In order to represent the influence of the external temperature on the defrosting completion, after the air conditioner is judged to be in the defrosting state, the temperature of the external environment where the outdoor unit of the air conditioner is located is detected, and the external environment temperature is obtained. Thereafter, the detected outside environment temperature is generated as a preset condition, and it is determined whether the relationship formed by the inlet temperature and the outlet temperature satisfies the preset condition.
And step S30, if the preset condition is reached, ending the defrosting operation of the condenser in the air conditioner.
Further, if it is determined that the relationship formed by the inlet temperature and the outlet temperature satisfies the preset condition, it indicates that the defrosting of the condenser is completed, thereby ending the defrosting operation of the condenser in the external fan of the air conditioner. And if the relation formed by the inlet temperature and the outlet temperature does not meet the preset condition, the defrosting of the condenser is not finished, the defrosting operation is continued, and the inlet temperature and the outlet temperature of the condenser are continuously acquired until the relation formed by the inlet temperature and the outlet temperature meets the requirement of the preset condition, so that the defrosting is finished.
In the technical scheme provided by this embodiment, when the air conditioner is in a defrosting state, the inlet temperature and the outlet temperature of the condenser in the air conditioner are detected, and whether the inlet temperature and the outlet temperature reach preset conditions is judged, wherein the preset conditions are conditions for finishing defrosting of the condenser in the air conditioner according to a representation generated in advance according to the external environment temperature; and if the inlet temperature and the outlet temperature reach preset conditions, finishing defrosting the condenser. Because the preset condition has relevance with the external environment temperature, the influence of the heat radiation phenomenon of the outdoor heat exchanger during defrosting on defrosting is fully considered by judging whether the inlet temperature and the outlet temperature reach the preset condition or not as a condition for judging to finish defrosting, the defrosting time can be accurately judged, and the defrosting effect is improved.
Further, referring to fig. 3, a second embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the first embodiment of the defrosting method of an air conditioner according to the present invention, wherein in the second embodiment, the step of determining whether the inlet temperature and the outlet temperature reach a preset condition for defrosting of a condenser in the air conditioner after the condenser finishes includes:
step S21, performing difference operation between the inlet temperature and the outlet temperature to generate a difference result;
step S22, comparing the difference result with the preset condition, and judging whether the difference result is matched with the preset condition;
in this embodiment, the relationship between the inlet temperature and the outlet temperature is a difference relationship, a difference operation is performed between the inlet temperature and the outlet temperature, and the outlet temperature is subtracted from the inlet temperature to generate a difference result. And comparing the difference result with a preset condition, and judging whether the difference result meets the requirement of the preset condition, namely whether the difference result can be matched with the preset condition. Wherein, the step of judging whether the difference result is matched with the preset condition comprises the following steps:
step S221, judging whether the difference result is greater than or equal to a reference value corresponding to the preset condition;
step S222, if the difference value is larger than or equal to the reference value corresponding to the preset condition, judging that the difference value result is matched with the preset condition;
in step S223, if the difference result is smaller than the reference value corresponding to the preset condition, it is determined that the difference result is not matched with the preset condition.
Further, the preset condition generated by the external environment temperature corresponds to a reference value, and the reference value is different according to the external environment temperature. And in the process of matching the difference result with the preset condition, judging whether the difference result is greater than or equal to a reference value corresponding to the preset condition. If the difference value is larger than or equal to the reference value corresponding to the preset condition, the difference value result meets the requirement of the preset condition; and judging that the difference result is matched with a preset condition, and finishing defrosting the condenser. Otherwise, if the difference result is smaller than the reference value corresponding to the preset condition, it indicates that the difference result does not meet the requirement of the preset condition; and judging that the difference result is not matched with the preset condition, and continuously acquiring the inlet temperature and the outlet temperature of the condenser until the difference result of the difference relation between the inlet temperature and the outlet temperature is greater than or equal to the reference value corresponding to the preset condition.
And step S23, if the difference result is matched with the preset condition, judging that the preset condition for defrosting the condenser in the air conditioner is reached.
And step S24, if the difference result does not match the preset condition, performing the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner until the difference result matches the preset condition.
Furthermore, after the difference result is judged to be greater than or equal to the reference value corresponding to the preset condition and the difference result is matched with the preset condition, the preset condition for finishing defrosting of the condenser in the air conditioner can be judged to be reached, and the control center sends a defrosting finishing instruction to finish defrosting of the condenser. Otherwise, if the difference result is smaller than the reference value corresponding to the preset condition and the difference result is not matched with the preset condition, the control center continuously sends detection instructions to the first temperature sensor and the second temperature sensor so as to continuously detect the inlet temperature and the outlet temperature of the condenser; and the controller does not send a defrosting ending instruction to end defrosting of the condenser until the difference result between the detected inlet temperature and the detected outlet temperature is greater than or equal to the reference value corresponding to the preset condition and the difference result is matched with the preset condition.
In the technical scheme provided by this embodiment, the difference result between the inlet temperature and the outlet temperature of the condenser and the magnitude relation between the reference values corresponding to the preset conditions generated by the external environment temperature are used as the basis for ending defrosting of the condenser, the influence of the heat radiation caused by the external environment temperature on defrosting is used as the factor for ending defrosting, and the accuracy for judging ending defrosting is improved.
Further, referring to fig. 4, a third embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the first or second embodiment of the defrosting method of an air conditioner according to the present invention, and in the third embodiment, before the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in a defrosting state, the method further includes:
step S40, obtaining an external environment temperature of an external environment of the outdoor unit of the air conditioner;
step S50, generating the preset condition according to the external environment temperature.
Understandably, the air conditioner has different frosting conditions and different corresponding external environment temperatures when the air conditioner is in heating operation in different periods. In order to accurately represent the influence of the external environment temperature on defrosting, the outdoor unit of the air conditioner of the embodiment is provided with an outdoor temperature sensor, and the control center sends an instruction to the outdoor temperature sensor after detecting that the air conditioner is in a defrosting state. The outdoor temperature sensor detects the external environment temperature of the external environment of the air conditioner outdoor unit after receiving the command, and returns the detected external environment temperature to the control center. The control center generates a preset condition according to the external environment temperature, and the preset condition is used for representing whether defrosting of the condenser needs to be finished or not. Wherein, according to the external environment temperature, the step of generating the preset condition comprises:
step S51, acquiring preset compensation parameters and a defrosting coefficient corresponding to the external environment temperature;
and step S52, generating the preset condition according to the preset compensation parameter, the defrosting coefficient and the external environment temperature.
Further, different outdoor environment temperatures are tested in advance, and a preset compensation parameter range suitable for compensating various external environment temperatures and a defrosting coefficient range corresponding to the external environment temperatures are obtained. And in the testing process, the indoor environment temperature is kept constant, the inlet temperature and the outlet temperature of the condenser are detected under various external environment temperatures, the difference between the inlet temperature and the outlet temperature is generated, and the preset compensation parameter range and the defrosting coefficient range are obtained according to the corresponding difference under various external environment temperatures. In addition, the equation of the straight line may be obtained by fitting coordinate points formed by various external ambient temperatures and the respective corresponding differences to the straight line. The linear equation represents the variation relationship between the external environment temperature and the difference value, and the coefficient of the linear equation is preferably a preset compensation parameter for compensating the external environment temperature and a defrosting coefficient corresponding to the external environment temperature.
In one embodiment, the indoor ambient temperature is kept constant at 20 ℃, and the external ambient temperature is selected as follows: 2 ℃, 0 ℃, -2 ℃, -4 ℃, -6 ℃, -8 ℃, -10 ℃, the inlet and outlet temperatures detected at each external ambient temperature were respectively: 32 ℃ and 6 ℃, 31.8 ℃ and 6.3 ℃, 31.9 ℃ and 6.7 ℃, 31.2 ℃ and 7 ℃, 30.8 ℃ and 7.3 ℃, 30.5 ℃ and 7.6 ℃, 30 ℃ and 8 ℃, respectively, giving the difference between the respective inlet and outlet temperatures: 26 deg.C, 25.5 deg.C, 25.2 deg.C, 24.2 deg.C, 23.5 deg.C, 22.9 deg.C, 22 deg.C. And obtaining a preset compensation parameter range from 10 to 30 according to the corresponding difference value at each environmental temperature, wherein the defrosting coefficient range is from 0 to 1. Further, fitting is performed between the coordinate points formed by the respective ambient temperatures and the respective corresponding differences, and a linear equation y is obtained as 0.3375x + 25.536. After rounding off the coefficient 0.3375 in the linear equation, the coefficient is preferably the defrosting coefficient corresponding to the external environment temperature; whereas rounding off 25.536 is preferred to be a predetermined compensation parameter.
Further, the preset compensation parameters for compensating for the external ambient temperature, which are preferably obtained through testing, and the defrosting coefficient corresponding to the external ambient temperature are stored in the storage unit of the air conditioner. And after the external environment temperature is detected, reading the preset compensation parameter and the defrosting coefficient from the storage unit, and combining the preset compensation parameter and the defrosting coefficient with the external environment temperature to generate a preset condition. Specifically, the step of generating the preset condition according to a preset compensation parameter, a defrosting coefficient and an external environment temperature includes:
step S521, calling a preset formula, and transmitting the preset compensation parameter, the defrosting coefficient and the external environment temperature to the preset formula to generate the preset condition;
step S522, calculating the preset compensation parameter, the defrosting coefficient, and the external environment temperature transmitted to the preset formula, and generating a reference value corresponding to the preset condition.
Furthermore, a preset formula for generating a preset condition is preset, after a preset compensation parameter for compensating the external environment temperature and a defrosting coefficient corresponding to the external environment temperature are read, and the detected external environment temperature is obtained, the preset formula is called, and the preset compensation parameter, the defrosting coefficient and the external environment temperature are transmitted to the preset formula to form the preset condition. Multiplication operation is firstly carried out between the defrosting coefficient and the external environment temperature through a preset formula, and then addition operation is carried out with a preset compensation parameter, so that a preset condition is obtained. Specifically, the preset formula can be represented by the formula (K0 × T0+ M), where K0 represents the defrosting coefficient, T0 represents the external ambient temperature, and M represents the preset compensation parameter; and transmitting the detected external environment temperature, the read preset compensation parameters and the read defrosting coefficients to the preset formula to respectively replace T0, M and K0 in the preset formula, so as to obtain preset conditions.
Furthermore, the preset compensation parameter, the defrosting coefficient and the external environment temperature transmitted to the device are calculated through a preset formula, and the obtained calculation result is the reference value corresponding to the preset condition. If the external ambient temperature is detected to be 2 ℃ in the case where the defrosting coefficient is 0.34 and the preset compensation parameter is 25.5, the preset condition is generated to be (0.34 × 2+25.5), and the reference value corresponding to the preset condition is 26.182 ℃. If the difference result between the inlet temperature and the outlet temperature of the condenser is greater than or equal to the reference value, that is, the defrosting of the condenser is finished, the control center sends an ending instruction to end the defrosting of the condenser.
In the technical scheme of the body feeling of the embodiment, a preset condition and a reference value corresponding to the preset condition are formed according to the external environment temperature of the external environment where the outdoor unit is located, and the preset condition and the reference value are used as a condition for judging the end of defrosting; the influence of heat radiation caused by the external environment temperature on defrosting is taken as a consideration factor for finishing defrosting, so that the defrosting is finished accurately, and the phenomenon that defrosting still exists after defrosting is finished is avoided.
The invention also provides an air conditioner, which comprises a memory, a processor and a defrosting program of the air conditioner, wherein the defrosting program of the air conditioner is stored in the memory and can run on the processor, and when the defrosting program of the air conditioner is executed by the processor, the defrosting method of the air conditioner is realized.
The present invention also provides a computer-readable storage medium storing a defrosting program of an air conditioner, which when executed by a processor implements the defrosting method of the air conditioner as described in the above embodiments.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
Claims (9)
1. A defrosting method of an air conditioner is characterized by comprising the following steps:
when the air conditioner is in a defrosting state, acquiring the inlet temperature and the outlet temperature of a condenser in the air conditioner, wherein the defrosting of the air conditioner is realized by a high-temperature refrigerant flowing in a condensation pipe of the condenser, and the defrosting of the air conditioner does not perform heating;
judging whether the inlet temperature and the outlet temperature reach a preset condition for finishing defrosting of a condenser in the air conditioner, wherein the preset condition is generated based on the external environment temperature of the external environment of the outdoor unit of the air conditioner, and the preset condition is an expected defrosting difference value of the inlet temperature and the outlet temperature;
if the preset condition is reached, finishing defrosting operation of a condenser in the air conditioner;
wherein the step of judging whether the inlet temperature and the outlet temperature reach a preset condition for finishing defrosting of a condenser in the air conditioner comprises the following steps:
performing difference operation between the inlet temperature and the outlet temperature to generate a difference result;
comparing the difference result with the preset condition, and judging whether the difference result is matched with the preset condition;
and if the difference result is matched with the preset condition, judging that the preset condition for finishing defrosting of the condenser in the air conditioner is reached.
2. The defrosting method of an air conditioner according to claim 1, wherein the step of judging whether the difference result matches the preset condition is followed by:
and if the difference result is not matched with the preset condition, executing the step of acquiring the inlet temperature and the outlet temperature of the condenser in the air conditioner until the difference result is matched with the preset condition.
3. The defrosting method of an air conditioner according to claim 1, wherein the step of judging whether the difference result matches the preset condition includes:
judging whether the difference result is greater than or equal to a reference value corresponding to the preset condition;
if the difference value is larger than or equal to the reference value corresponding to the preset condition, judging that the difference value result is matched with the preset condition;
and if the difference result is smaller than the reference value corresponding to the preset condition, judging that the difference result is not matched with the preset condition.
4. A defrosting method of an air conditioner according to any one of claims 1 to 3, wherein the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in a defrosting state is preceded by:
acquiring the external environment temperature of the external environment of the outdoor unit of the air conditioner;
and generating the preset condition according to the external environment temperature.
5. The defrosting method of an air conditioner according to claim 4, wherein the generating of the preset condition according to the external ambient temperature comprises:
acquiring preset compensation parameters and a defrosting coefficient corresponding to the external environment temperature;
and generating the preset condition according to the preset compensation parameter, the defrosting coefficient and the external environment temperature.
6. The defrosting method of an air conditioner according to claim 5, wherein the generating of the preset condition according to the preset compensation parameter, the defrosting coefficient and the external ambient temperature comprises:
calling a preset formula, and transmitting the preset compensation parameter, the defrosting coefficient and the external environment temperature to the preset formula to generate the preset condition;
and calculating the preset compensation parameter, the defrosting coefficient and the external environment temperature which are transmitted to the preset formula to generate a reference value corresponding to the preset condition.
7. A defrosting method of an air conditioner according to any one of claims 1 to 3, wherein the step of obtaining the inlet temperature and the outlet temperature of the condenser in the air conditioner when the air conditioner is in a defrosting state is preceded by:
judging whether the operation mode of the air conditioner is a heating mode or not, and if the operation mode is the heating mode, judging whether a preset defrosting identifier is in an activated state or not;
and if the preset defrosting identifier is in an activated state, judging that the air conditioner is in a defrosting state.
8. An air conditioner, characterized in that the air conditioner comprises a memory, a processor and a defrosting program of the air conditioner stored in the memory and operable on the processor, wherein the defrosting program of the air conditioner, when executed by the processor, implements the defrosting method of the air conditioner according to any one of claims 1 to 7.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a defrosting program of an air conditioner, which when executed by a processor, implements a defrosting method of the air conditioner according to any one of claims 1 to 7.
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