CN113587368B - Cleaning method, device and equipment of air conditioner and storage medium - Google Patents
Cleaning method, device and equipment of air conditioner and storage medium Download PDFInfo
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- CN113587368B CN113587368B CN202110827180.0A CN202110827180A CN113587368B CN 113587368 B CN113587368 B CN 113587368B CN 202110827180 A CN202110827180 A CN 202110827180A CN 113587368 B CN113587368 B CN 113587368B
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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
- F24F11/43—Defrosting; Preventing freezing of indoor 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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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- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to a cleaning method, a device, equipment and a storage medium of an air conditioner, wherein the method comprises the steps of detecting a first temperature value of an indoor coil; when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling the compressor to stop and controlling the indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan; and when a condition indicating the end of defrosting is existed, controlling the air conditioner to operate in the heating mode so as to continuously defrost the frost layer after defrosting until defrosting is finished and the heating mode is exited. The energy consumption of the air conditioner in the heating mode is reduced by pre-defrosting the frost layer before the heating mode.
Description
Technical Field
The application relates to the field of smart home, in particular to a cleaning method, a cleaning device, cleaning equipment and a storage medium for an air conditioner.
Background
The air conditioner has a large amount of grime to adhere to on indoor coil pipe after long-time use, leads to the surface deposition of indoor coil pipe, and these grime can lead to the resistance increase of circulation of air, reduce indoor coil pipe's heat transfer performance, and simultaneously, the grime still can breed a large amount of bacteriums, brings the inconvenience for user's health, and consequently the indoor coil pipe of air conditioner will regularly clear up.
Most of existing air conditioners with self-cleaning functions clean dust and dirt on an indoor coil pipe in a mode of firstly frosting and then defrosting in the process of switching a cooling mode and a heating mode of the air conditioner. However, since the air conditioner has high energy consumption in the heating mode, the air conditioner has high energy consumption in the self-cleaning function.
Disclosure of Invention
The application provides a cleaning method, a cleaning device, equipment and a storage medium of an air conditioner, which are used for solving the problem of high energy consumption in the process of cleaning the air conditioner by adopting the related technology.
In a first aspect, a method for cleaning an air conditioner is provided, including:
detecting a first temperature value of an indoor coil pipe;
when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling a compressor to stop and controlling an indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan;
when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in a heating mode so as to continuously defrost the pre-defrosted frost layer until the end of defrosting.
Optionally, controlling the air conditioner to operate in a heating mode includes:
acquiring the defrosting ventilation time of the indoor fan for defrosting the frost layer in advance and acquiring the first pipe temperature change degree of the indoor coil pipe in the defrosting process in advance;
determining a first period of time for which the air conditioner is operated in the heating mode based on the first tube temperature variation degree and the defrosting and ventilating period of time;
and controlling the air conditioner to operate in the heating mode for the first time period.
Optionally, acquiring a first tube temperature change degree of the indoor coil during the pre-defrosting process comprises:
acquiring the stop time of the compressor in the process of pre-defrosting;
acquiring the maximum temperature value and the minimum temperature value of the indoor coil pipe within the defrosting and ventilating time from the shutdown time;
determining a temperature difference between the maximum temperature value and the minimum temperature value;
determining the temperature difference as the first tube temperature change degree.
Optionally, the first time period is inversely proportional to the first tube temperature change degree and the prefrosting vent time period.
Optionally, controlling the air conditioner to operate in the heating mode for the first duration includes:
acquiring a second temperature value of the indoor coil pipe after the pre-defrosting is finished;
judging whether the second temperature value is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value, wherein the first temperature value is less than the second temperature value;
if the temperature value is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operating frequency of the compressor or the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold value and the second temperature threshold value.
Optionally, adjusting the operating frequency of the compressor or the rotation speed of the indoor fan within the first duration to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold and the second temperature threshold includes:
determining a first difference between the second temperature value and the first temperature threshold; when the first difference is larger than or equal to a first difference threshold value, reducing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the first difference value is smaller than the first difference value threshold value, the rotating speed of the indoor fan is increased within the first time period, so that the second temperature value is adjusted to be within the preset temperature interval;
or the like, or, alternatively,
determining a second difference between the second temperature value and the second temperature threshold; when the second difference value is larger than or equal to a second difference value threshold value, increasing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; and when the second difference value is smaller than the second difference value threshold value, reducing the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within the preset temperature interval.
Optionally, after adjusting the operating frequency of the compressor or the rotating speed of the indoor fan within the first duration to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold and the second temperature threshold, the method further includes:
acquiring the entry moment when the second temperature value is adjusted to the preset temperature interval;
and determining that the temperature values of the indoor coil pipes are all located in the preset temperature interval within a second time period from the entering moment.
Optionally, when there is a condition indicating that the defrosting is finished, controlling the air conditioner to operate in the heating mode to continue defrosting the pre-defrosted frost layer until after defrosting is finished, further comprising:
controlling the running duration of the indoor fan for defrosting and ventilating in advance;
acquiring a second pipe temperature change degree of the indoor coil pipe within the time length range of the defrosting and ventilating time length and a current temperature value of the indoor coil pipe after the indoor fan runs the defrosting and ventilating time length;
and when the second pipe temperature change degree is smaller than the first pipe temperature change degree of the indoor coil pipe in the defrosting pre-process and the current temperature value is larger than or equal to the frost condensation temperature value, controlling the indoor fan to continue to operate for a third time until the current temperature value is not smaller than the frost condensation temperature value.
In a second aspect, there is provided an air conditioner comprising:
the system comprises a controller, an indoor coil, a compressor, a temperature sensor and an indoor fan;
the controller is used for detecting a first temperature value of the indoor coil through the temperature sensor; when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling a compressor to stop and controlling an indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan; when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in a heating mode so as to continuously defrost the pre-defrosted frost layer until the end of defrosting.
In a third aspect, there is provided a washing apparatus of an air conditioner, comprising:
the detection unit is used for detecting a first temperature value of the indoor coil pipe;
the first control unit is used for controlling the compressor to stop and controlling the indoor fan to continue to operate when the first temperature value indicates that the surface of the indoor coil pipe has the frost layer, so that the frost layer is pre-defrosted through the indoor fan;
and the second control unit is used for controlling the air conditioner to operate in the heating mode when a condition indicating the end of the pre-defrosting exists so as to continuously defrost the pre-defrosted frost layer until the end of defrosting.
In a fourth aspect, an electronic device is provided, comprising: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;
the memory for storing a computer program;
the processor is configured to execute the program stored in the memory, and implement the method for cleaning an air conditioner according to the first aspect.
In a fifth aspect, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements the method of cleaning an air conditioner of the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: according to the technical scheme provided by the embodiment of the application, a first temperature value of an indoor coil pipe is detected; when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling the compressor to stop and controlling the indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan; and when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in the heating mode so as to continuously defrost the pre-defrosted frost layer until the defrosting is finished and the heating mode is exited. The energy consumption of the air conditioner in the heating mode is reduced by pre-defrosting the frost layer before the heating mode.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic flow chart illustrating a method for cleaning an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a cleaning device of an air conditioner according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the application provides a cleaning method of an air conditioner, which can be applied to a controller in the air conditioner, and as shown in fig. 1, the method can include the following steps:
In this embodiment, the cleaning method of the air conditioner may be triggered and executed manually, or may be triggered and executed at regular time, and this embodiment is not limited specifically. It should be appreciated that when the cleaning method is manually triggered to be performed, step 101 is performed in response to a user's cleaning instructions, and step 101 is performed periodically when the first temperature value fails to indicate that the surface of the indoor coil has a frost layer; when the cleaning method is executed at the time of the timing trigger, step 101 is executed when the cleaning cycle comes.
And 102, when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling the compressor to stop, and controlling the indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan.
In this embodiment, when the first temperature value indicates that the surface of the indoor coil has a frost layer, the first temperature is less than 0 ℃.
In use, when the first temperature value indicates that the surface of the indoor coil has a frost layer, there are two cases where the air conditioner is operating in a cooling mode and not operating in the cooling mode. It should be understood that when the air conditioner is not operating in the cooling mode, it indicates that the air conditioner is in the cooling mode operation before the air conditioner is washed.
And when the air conditioner operates in the cooling mode, in order not to influence the use of a user, in the frost making and condensation stage, namely, the operation time of the air conditioner operating in the cooling mode to form a frost layer on the surface of the indoor coil pipe is relatively short, so after the cooling and frost condensation stage is finished, the indoor temperature cannot change greatly and cannot be lower than zero degree generally, and due to the generation of frost condensation, the temperature of the indoor coil pipe is generally lower than zero degree, and therefore when the indoor fan is controlled to operate continuously, the frost layer on the surface of the indoor coil pipe can be pre-defrosted through the indoor air.
In application, in order to improve the defrosting effect in the pre-defrosting stage, the indoor fan is controlled to operate at the highest rotating speed when the indoor fan is controlled to operate in the pre-defrosting stage.
And 103, controlling the air conditioner to operate in a heating mode when a condition indicating the end of defrosting is available, so as to continuously defrost the frost layer subjected to defrosting until the end of defrosting.
In this embodiment, the duration may be used to indicate whether defrosting is finished, specifically, the duration of defrosting ventilation in a defrosting stage for defrosting a frost layer is set, the shutdown time at which the compressor is stopped is obtained, the operating duration of the indoor fan is recorded from the shutdown time, and when the operating duration of the indoor fan is the same as the duration of defrosting ventilation, it is determined that a condition indicating defrosting is finished exists.
It should be understood that, considering that the high-low pressure difference caused by the direct switching from the cooling mode to the heating mode of the air conditioner can cause the reversing failure of the four-way valve, the four-way valve is switched to start heating defrosting after the pressure difference is stable through the compressor stopping defrosting and ventilating time length.
It should be understood that the defrosting and ventilating time is related to the indoor environment temperature, the higher the indoor temperature is, the better the defrosting effect is, and the longer the defrosting time is, the energy consumption required by heating can be reduced, and the purpose of saving energy consumption is achieved.
In the embodiment, the following formula is adopted to calculate the defrosting and ventilating time period:
t1= ta+Z1*T0 (1)
wherein ta is a reference value of the defrosting pre-aeration time length, if ta can be set as 180s, Z1 is a correction coefficient, and Z1 can be 0.5 in application.
In application, after the defrosting stage, the thickness of the frost layer on the surface of the indoor coil pipe is smaller than that of the frost layer formed in the cooling mode, and the thickness of the frost layer directly influences the temperature value of the indoor coil pipe, and the thickness of the frost layer is influenced by the duration of the defrosting ventilation in the defrosting stage, so that the first duration of the operation of the air conditioner in the heating mode can be determined based on the first pipe temperature change degree of the indoor coil pipe in the defrosting stage and the duration of the defrosting ventilation in the defrosting stage.
It should be understood that after the defrosting stage, the thickness of the frost layer on the surface of the indoor coil is reduced, which correspondingly shortens the first time period for the air conditioner to operate in the heating mode, and since the thickness of the frost layer depends on the duration of the defrosting ventilation, and the thickness of the frost layer directly affects the temperature value of the indoor coil, the greater the temperature change degree of the indoor coil in the defrosting stage, the thinner the frost layer on the surface of the indoor coil after the defrosting stage, and the shorter the first time period for the air conditioner to operate in the heating mode. That is, the first period of time is inversely proportional to the first tube temperature change degree and the pre-defrost ventilation period of time in the present embodiment.
Optionally, in this embodiment, the first duration is determined by the following formula:
t2=tb-Z2*t1-Z3*a(2)
wherein t2 is a first duration; tb is a reference value of the first duration and can be calibrated to be 150 s; z2 is a correction coefficient, and Z2 can be 0.2 in application; z3 is a correction coefficient, and Z3 can be 2 in application; t1 is the time length of pre-defrosting ventilation; a is the first tube temperature change degree.
In this embodiment, the temperature difference between the maximum temperature value and the minimum temperature value of the indoor coil pipe in the defrosting stage is used as the first pipe temperature variation degree. Specifically, the shutdown time of the compressor in the process of pre-defrosting is obtained; acquiring the maximum temperature value and the minimum temperature value of the coil pipe in the chamber during the defrosting and ventilating time from the shutdown time; determining a temperature difference between the maximum temperature value and the minimum temperature value; the temperature difference is determined as a first tube temperature change degree.
In application, in the pre-defrosting stage, the frost layer becomes thinner gradually, and the temperature of the indoor coil pipe rises gradually, so that the maximum temperature value of the indoor coil pipe appears at the moment when the pre-defrosting stage is finished, and the minimum temperature value of the indoor coil pipe appears at the moment when the pre-defrosting stage is started.
In application, the operation parameters of the air conditioner in the heating mode can be preset, and the operation parameters include, but are not limited to, the operation frequency of the compressor, the rotation speed of the fan and the like.
In the application, in order to prevent after the defrosting stage, the temperature value of the indoor coil pipe is too low to cause the incomplete defrosting and the temperature value of the indoor coil pipe is too high to cause the triggering of the high temperature protection, which affects the reduction of the operation reliability of the air conditioner, in this embodiment, when the compressor is controlled to operate in the heating mode for a first time period, it is ensured that the second temperature value of the indoor coil pipe after the defrosting is finished is located in the preset temperature interval formed by the first temperature threshold and the second temperature threshold, that is, the second temperature value of the indoor coil pipe after the defrosting is finished is not less than the first temperature threshold and is not greater than the second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold.
It is to be understood that when the second temperature value is not less than the first temperature threshold, the second temperature value is greater than or equal to the first temperature threshold; when the second temperature value is not greater than the second temperature threshold, the second temperature value is less than or equal to the second temperature threshold.
The first temperature threshold and the second temperature threshold may be set empirically, for example, the first temperature threshold may be set to 53 ℃ and the second temperature threshold may be set to 56 ℃.
The following explains the magnitude relation between the maximum temperature value and the minimum temperature value of the indoor coil pipe in the defrosting stage and the first temperature threshold value and the second temperature threshold value:
defining the maximum temperature value of the indoor coil pipe in the defrosting pre-stage as Tmax1, the minimum temperature value as Tmin1, the first temperature threshold value as T1, the second temperature threshold value as T2 and the second temperature value of the indoor coil pipe as the inner pipe temperature T;
relationship of T1, T2 and T: after primary ventilation is finished, the four-way valve is reversed, the compressor is restarted, heating operation is carried out at the moment, and the temperature T of the inner pipe rises. If the temperature T of the inner pipe is controlled to be more than or equal to T1 and less than or equal to T2, the lower limit temperature T1 can ensure that the frost is completely melted, the upper limit temperature T2 can ensure the operation reliability, and the risks of damaging the air conditioner, stopping the air conditioner and the like are avoided.
Tmax1, tmin1, and T: tmax1 and Tmin1 are Tmax1 and Tmin1 when the four-way valve is not reversed, the temperature T of the inner pipe at the moment is the temperature of the frosted inner pipe and may be lower than 0 ℃, the defrosting ventilation duration is pre-changed after the shutdown, the highest gear operation of an indoor fan is maintained, the temperature T of the inner pipe is increased, the temperatures of a plurality of time points T are obtained, the highest temperature is recorded as Tmax1, and the lowest temperature is recorded as Tmin1. Since T1 is the estimated temperature after the four-way valve is switched, the high-temperature exhaust gas after the four-way valve is switched will reach the indoor heating, and the temperature T of the inner pipe increases, tmax1 may not exceed T1 at the maximum.
When the second temperature value of the indoor coil pipe is not located in the preset temperature range after the defrosting is finished, the operating frequency of the compressor or the rotating speed of the indoor fan is adjusted within the first time period so as to adjust the second temperature value of the indoor coil pipe to be located in the preset temperature range. In the application, compare in the regulation of indoor fan rotational speed to the temperature value of indoor coil pipe, the operating frequency of compressor is bigger to the regulation degree of the temperature value of indoor coil pipe, consequently when the second temperature value of indoor coil pipe is far away apart from presetting the temperature interval after the defrosting finishes in advance, preferentially adjusts the operating frequency of compressor, and when the second temperature value of indoor coil pipe is near apart from presetting the temperature interval after the defrosting finishes in advance, preferentially adjusts the rotational speed of indoor fan.
Specifically, the method comprises the following steps:
determining a first difference value between the second temperature value and the first temperature threshold value; when the first difference is greater than or equal to the first difference threshold, reducing the operating frequency of the compressor within a first time period so as to adjust the second temperature value to be within a preset temperature interval; when the first difference is smaller than the first difference threshold, the rotating speed of the indoor fan is increased within a first time period, so that the second temperature value is adjusted to be within a preset temperature interval;
or the like, or, alternatively,
determining a second difference between the second temperature value and the second temperature threshold; when the second difference value is larger than or equal to the second difference value threshold value, increasing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; and when the second difference is smaller than the second difference threshold, reducing the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within the preset temperature interval.
In this embodiment, the speed may be adjusted according to a preset frequency, so as to reduce the operating frequency of the compressor or increase the operating frequency of the compressor. The frequency adjustment speed in the application includes but is not limited to 2Hz/S.
In this embodiment, the speed can be adjusted according to a preset rotating speed, so as to increase the rotating speed of the indoor fan or decrease the rotating speed of the indoor fan. The speed of rotation adjustment in the application includes but is not limited to 10r/2S.
In application, when the operating frequency of the compressor is increased and reduced, in order to ensure the normal operation of the compressor, the operating frequency of the compressor cannot exceed the upper limit of the operating frequency of the compressor at the highest and cannot be lower than the lower limit of the operating frequency of the compressor at the lowest. Meanwhile, when the rotating speed of the indoor fan is increased and reduced, in order to guarantee normal operation of the indoor fan, the highest rotating speed of the indoor fan cannot be higher than the upper limit of the rotating speed of the indoor fan, and the lowest rotating speed of the indoor fan cannot be lower than the lower limit of the rotating speed of the indoor fan.
It should be understood that after the second temperature value of the indoor coil is adjusted to the preset temperature interval, the air conditioner operates in the heating mode according to the operating frequency of the compressor and the rotating speed of the indoor fan at the moment.
It should be understood that the first difference and the second difference are both greater than 0, and therefore the first difference is an absolute value of a difference between the second temperature value of the indoor coil and the first temperature threshold, and the second difference is an absolute value of a difference between the second temperature value of the indoor coil and the second temperature threshold.
In this embodiment, the first difference threshold and the second difference threshold may be preset manually according to experience, for example, the first difference threshold and the second difference threshold are both set to be 2 ℃.
In application, in order to ensure the defrosting effect on a frost layer in a heating mode, after the second temperature value of the indoor coil pipe is adjusted to a preset temperature interval, the temperature value of the indoor coil pipe is ensured to be in the preset temperature interval through the second time.
Specifically, the second temperature value of the indoor coil pipe is obtained and adjusted to the entering moment of a preset temperature interval; and determining that the temperature values of the coil pipes in the inner chamber in the second time period from the entering moment are all located in the preset temperature interval.
In this embodiment, the second time period may be set empirically, for example, the second time period may be set to 20s.
In application, in order to eliminate waste heat generated by heating, water drops attached to the indoor coil pipe after defrosting are blown out, secondary ventilation is carried out on the indoor coil pipe after defrosting is finished, and whether the air conditioner is cleaned or not is determined according to the temperature change degree of a second pipe of the indoor coil pipe in the secondary ventilation process.
Specifically, controlling the running time of an indoor fan for defrosting and ventilating in advance; acquiring a second pipe temperature change degree of the indoor coil pipe within the time length range of the defrosting and ventilating time length and a current temperature value of the indoor coil pipe after the indoor fan runs the defrosting and ventilating time length; and when the second pipe temperature change degree is smaller than the first pipe temperature change degree of the indoor coil pipe in the defrosting pre-process and the current temperature value is larger than or equal to the frost condensation temperature value, controlling the indoor fan to continue to operate for a third time until the current temperature value is not smaller than the frost condensation temperature value.
In this embodiment, the difference between the maximum temperature value and the minimum temperature value of the coil pipe in the indoor unit within the defrosting and ventilating time range is determined as the second pipe temperature change degree.
It will be appreciated that since the secondary ventilation is a waste heat removal process, the maximum temperature value for the coil in the chamber during the pre-defrost ventilation period occurs at the beginning of the pre-defrost ventilation period, i.e., at the end of the defrost period, while the minimum temperature value for the coil in the chamber occurs at the end of the pre-defrost ventilation period.
It should be understood that, because the pipe temperature fluctuation caused by the frost layer melting is greater than the pipe temperature fluctuation caused by the water vapor evaporation, within the same defrosting pre-ventilation time, if the second pipe temperature change degree caused by the water vapor evaporation is less than the first pipe temperature change degree and the current temperature of the indoor coil pipe is not less than the frost condensation temperature value, it indicates that water drops on the surface of the indoor coil pipe are removed, otherwise, the indoor fan is continuously controlled to operate and ventilate.
In applications, the frost temperature values include, but are not limited to, 0 ℃.
According to the technical scheme provided by the embodiment of the application, a first temperature value of an indoor coil pipe is detected; when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling the compressor to stop and controlling the indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan; and when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in the heating mode so as to continuously defrost the pre-defrosted frost layer until the defrosting is finished and the heating mode is exited. The energy consumption of the air conditioner in the heating mode is reduced by pre-defrosting the frost layer before the heating mode.
Based on the same concept, the embodiment of the present application provides an air conditioner, and specific implementation of the air conditioner may refer to the description of the method embodiment section, and repeated descriptions are omitted, as shown in fig. 2, the air conditioner mainly includes:
a controller 201, an indoor coil 202, a compressor 203, a temperature sensor 204 and an indoor fan 205;
the controller 201 is used for detecting a first temperature value of the indoor coil 202 through the temperature sensor 204; when the first temperature value indicates that the surface of the indoor coil 202 has a frost layer, controlling the compressor 203 to stop and controlling the indoor fan 205 to continue to operate, so as to pre-defrost the frost layer through the indoor fan 205; and when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in a heating mode so as to continuously defrost the pre-defrosted frost layer until the defrosting is finished.
Based on the same concept, the embodiment of the present application provides a cleaning device for an air conditioner, and the specific implementation of the device may refer to the description of the method embodiment section, and repeated descriptions are omitted, as shown in fig. 3, the device mainly includes:
the detection unit 301 is used for detecting a first temperature value of the indoor coil;
the first control unit 302 is used for controlling the compressor to stop and controlling the indoor fan to continue to operate when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, so that the frost layer is pre-defrosted by the indoor fan;
and a second control unit 303, configured to control the air conditioner to operate in the heating mode to continue defrosting the pre-defrosted frost layer until defrosting is finished, when a condition indicating end of defrosting exists.
Optionally, the second control unit 303 is configured to:
acquiring the defrosting ventilation time of an indoor fan for defrosting a frost layer in advance and acquiring the first pipe temperature change degree of an indoor coil pipe in the defrosting process in advance;
determining a first time period for the air conditioner to operate in the heating mode based on the first pipe temperature change degree and the defrosting and ventilating time period;
and controlling the air conditioner to operate in the heating mode for a first time period.
Optionally, the second control unit 303 is configured to:
the method comprises the steps of obtaining the stop time of a compressor in the process of defrosting in advance;
acquiring a maximum temperature value and a minimum temperature value of an indoor coil pipe in a defrosting and ventilating period from the moment of shutdown;
determining a temperature difference between a maximum temperature value and a minimum temperature value;
the temperature difference is determined as a first tube temperature change degree.
Optionally, the first period of time is inversely proportional to the first degree of tube temperature change and the pre-defrost vent period of time.
Optionally, the second control unit 303 is configured to:
acquiring a second temperature value of the indoor coil pipe after defrosting is finished;
judging whether the second temperature value is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value, wherein the first temperature threshold value is less than the second temperature threshold value;
if the temperature value is smaller than the first temperature threshold value or larger than the second temperature threshold value, the operating frequency of the compressor or the rotating speed of the indoor fan is adjusted within a first time length, so that the second temperature value is adjusted to be within a preset temperature interval formed by the first temperature threshold value and the second temperature threshold value.
Optionally, the second control unit 303 is configured to:
determining a first difference value between the second temperature value and the first temperature threshold value; when the first difference value is larger than or equal to a first difference value threshold value, reducing the operating frequency of the compressor within a first time period so as to adjust the second temperature value to be within a preset temperature interval; when the first difference is smaller than the first difference threshold, the rotating speed of the indoor fan is increased within a first time period, so that the second temperature value is adjusted to be within a preset temperature interval;
or the like, or, alternatively,
determining a second difference between the second temperature value and the second temperature threshold; when the second difference value is larger than or equal to the second difference value threshold value, increasing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; and when the second difference is smaller than the second difference threshold, reducing the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within the preset temperature interval.
Optionally, the apparatus is further configured to:
acquiring the entry moment when the second temperature value is adjusted to a preset temperature interval;
and determining that the temperature values of the coil pipes in the inner chamber in the second time period from the entering moment are all located in the preset temperature interval.
Optionally, the apparatus is further configured to:
controlling the running time of the indoor fan for defrosting and ventilating;
acquiring a second pipe temperature change degree of the indoor coil pipe within the time length range of the defrosting and ventilating time length and a current temperature value of the indoor coil pipe after the indoor fan runs the defrosting and ventilating time length;
and when the second pipe temperature change degree is smaller than the first pipe temperature change degree of the indoor coil pipe in the defrosting pre-process and the current temperature value is larger than or equal to the frost condensation temperature value, controlling the indoor fan to continue to operate for a third time until the current temperature value is not smaller than the frost condensation temperature value.
Based on the same concept, an embodiment of the present application further provides an electronic device, as shown in fig. 4, the electronic device mainly includes: a processor 401, a memory 402 and a communication bus 403, wherein the processor 401 and the memory 402 communicate with each other through the communication bus 403. The memory 402 stores a program executable by the processor 401, and the processor 401 executes the program stored in the memory 402, so as to implement the following steps:
detecting a first temperature value of an indoor coil pipe;
when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling the compressor to stop and controlling the indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan;
and when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in the heating mode so as to continuously defrost the pre-defrosted frost layer until the defrosting is finished.
The communication bus 403 mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 403 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.
The Memory 402 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the aforementioned processor 401.
The Processor 401 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc., and may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components.
In still another embodiment of the present application, there is also provided a computer-readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to execute the cleaning method of an air conditioner described in the above-described embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes, etc.), optical media (e.g., DVDs), or semiconductor media (e.g., solid state drives), among others.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A cleaning method of an air conditioner is characterized by comprising the following steps:
detecting a first temperature value of an indoor coil pipe;
when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling a compressor to stop and controlling an indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan;
when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in a heating mode so as to continuously defrost the pre-defrosted frost layer until the end of defrosting;
the controlling the air conditioner to operate in a heating mode includes:
acquiring the defrosting ventilation time of the indoor fan for defrosting the frost layer in advance and acquiring the first pipe temperature change degree of the indoor coil pipe in the defrosting process in advance;
determining a first period of time for which the air conditioner is operated in the heating mode based on the first tube temperature variation degree and the defrosting and ventilating period of time;
controlling the air conditioner to operate in a heating mode for the first time period;
the controlling the air conditioner to operate in the heating mode for the first duration includes:
acquiring a second temperature value of the indoor coil pipe after the defrosting is finished;
judging whether the second temperature value is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value, wherein the first temperature threshold value is less than the second temperature threshold value;
if the temperature value is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operating frequency of the compressor or the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold value and the second temperature threshold value;
adjusting the operating frequency of the compressor or the rotating speed of the indoor fan within the first duration to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold and the second temperature threshold, including:
determining a first difference between the second temperature value and the first temperature threshold; when the first difference is larger than or equal to a first difference threshold value, reducing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the first difference is smaller than the first difference threshold, increasing the rotating speed of the indoor fan within the first time period so as to adjust the second temperature value to be within the preset temperature interval, wherein the first difference is an absolute value of a difference between the second temperature value of the indoor coil and the first temperature threshold;
or the like, or, alternatively,
determining a second difference between the second temperature value and the second temperature threshold; when the second difference value is larger than or equal to a second difference value threshold value, increasing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the second difference is smaller than the second difference threshold, reducing the rotating speed of the indoor fan within the first time period so as to adjust the second temperature value to be within the preset temperature interval, wherein the second difference is an absolute value of a difference between the second temperature value of the indoor coil and the second temperature threshold.
2. The method of claim 1, wherein obtaining a first degree of tube temperature change of the indoor coil during the pre-defrost comprises:
acquiring the stop time of the compressor in the process of pre-defrosting;
acquiring the maximum temperature value and the minimum temperature value of the indoor coil pipe within the defrosting and ventilating time from the shutdown time;
determining a temperature difference between the maximum temperature value and the minimum temperature value;
determining the temperature difference as the first tube temperature change degree.
3. The method of claim 1, wherein the first time period is inversely proportional to the first degree of tube temperature change and the length of the prefrosting vent time.
4. The method of claim 1, wherein after adjusting the operating frequency of the compressor or the rotational speed of the indoor fan for the first length of time to adjust the second temperature value to be within a preset temperature interval comprised of the first temperature threshold and the second temperature threshold, further comprising:
acquiring the entry moment when the second temperature value is adjusted to the preset temperature interval;
and determining that the temperature values of the indoor coil pipes are all located in the preset temperature interval within a second time period from the entering moment.
5. The method of claim 1, wherein when a condition indicating the end of pre-defrosting exists, controlling the air conditioner to operate in a heating mode to continue defrosting the pre-defrosted frost layer until after the end of defrosting, further comprises:
controlling the running duration of the indoor fan for defrosting and ventilating;
acquiring a second pipe temperature change degree of the indoor coil pipe within the time length range of the defrosting and ventilating time length and a current temperature value of the indoor coil pipe after the indoor fan runs the defrosting and ventilating time length;
and when the second pipe temperature change degree is smaller than the first pipe temperature change degree of the indoor coil pipe in the defrosting pre-treatment process and the current temperature value is greater than or equal to the frost condensation temperature value, controlling the indoor fan to continue to operate for a third time until the current temperature value is not less than the frost condensation temperature value.
6. An air conditioner, comprising:
the system comprises a controller, an indoor coil, a compressor, a temperature sensor and an indoor fan;
the controller is used for detecting a first temperature value of the indoor coil through the temperature sensor; when the first temperature value indicates that the surface of the indoor coil pipe has a frost layer, controlling a compressor to stop and controlling an indoor fan to continue to operate so as to pre-defrost the frost layer through the indoor fan; when a condition indicating the end of the pre-defrosting exists, controlling the air conditioner to operate in a heating mode so as to continuously defrost the pre-defrosted frost layer until the end of defrosting;
the controller is used for acquiring the defrosting ventilation time of the indoor fan for defrosting the frost layer in advance and acquiring the first pipe temperature change degree of the indoor coil pipe in the defrosting process in advance; determining a first period of time for which the air conditioner is operated in the heating mode based on the first tube temperature variation degree and the defrosting and ventilating period of time; controlling the air conditioner to operate in a heating mode for the first time period;
the controller is used for acquiring a second temperature value of the indoor coil pipe after the defrosting is finished; judging whether the second temperature value is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value, wherein the first temperature threshold value is less than the second temperature threshold value; if the temperature value is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operating frequency of the compressor or the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold value and the second temperature threshold value;
the controller is configured to determine a first difference between the second temperature value and the first temperature threshold; when the first difference is larger than or equal to a first difference threshold value, reducing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the first difference is smaller than the first difference threshold, increasing the rotating speed of the indoor fan within the first time period so as to adjust the second temperature value to be within the preset temperature interval, wherein the first difference is an absolute value of a difference between the second temperature value of the indoor coil and the first temperature threshold; or, determining a second difference between the second temperature value and the second temperature threshold; when the second difference value is larger than or equal to a second difference value threshold value, increasing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the second difference is smaller than the second difference threshold, reducing the rotating speed of the indoor fan within the first time period so as to adjust the second temperature value to be within the preset temperature interval, wherein the second difference is an absolute value of a difference between the second temperature value of the indoor coil and the second temperature threshold.
7. A cleaning device of an air conditioner, comprising:
the detection unit is used for detecting a first temperature value of the indoor coil pipe;
the first control unit is used for controlling the compressor to stop and controlling the indoor fan to continue to operate when the first temperature value indicates that the surface of the indoor coil pipe has the frost layer, so that the frost layer is pre-defrosted through the indoor fan;
the second control unit is used for controlling the air conditioner to operate in a heating mode when a condition indicating the end of the pre-defrosting exists so as to continuously defrost the pre-defrosted frost layer until the end of defrosting;
the second control unit is configured to:
acquiring the defrosting ventilation time of the indoor fan for defrosting the frost layer in advance and acquiring the first pipe temperature change degree of the indoor coil pipe in the defrosting process in advance;
determining a first period of time for which the air conditioner is operated in the heating mode based on the first tube temperature variation degree and the defrosting and ventilating period of time;
controlling the air conditioner to operate in a heating mode for the first time period;
the second control unit is configured to:
acquiring a second temperature value of the indoor coil pipe after the defrosting is finished;
judging whether the second temperature value is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value, wherein the first temperature threshold value is less than the second temperature threshold value;
if the temperature value is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operating frequency of the compressor or the rotating speed of the indoor fan within the first time length so as to adjust the second temperature value to be within a preset temperature interval formed by the first temperature threshold value and the second temperature threshold value;
the second control unit is configured to:
determining a first difference between the second temperature value and the first temperature threshold; when the first difference is larger than or equal to a first difference threshold value, reducing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the first difference is smaller than the first difference threshold, increasing the rotating speed of the indoor fan within the first time period so as to adjust the second temperature value to be within the preset temperature interval, wherein the first difference is an absolute value of a difference between the second temperature value of the indoor coil and the first temperature threshold;
or the like, or, alternatively,
determining a second difference between the second temperature value and the second temperature threshold; when the second difference value is larger than or equal to a second difference value threshold value, increasing the operating frequency of the compressor within the first time period so as to adjust the second temperature value to be within the preset temperature interval; when the second difference is smaller than the second difference threshold, reducing the rotating speed of the indoor fan within the first time period so as to adjust the second temperature value to be within the preset temperature interval, wherein the second difference is an absolute value of a difference between the second temperature value of the indoor coil and the second temperature threshold.
8. An electronic device, comprising: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;
the memory for storing a computer program;
the processor, which executes the program stored in the memory, implements the cleaning method of the air conditioner according to any one of claims 1 to 5.
9. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the cleaning method of an air conditioner according to any one of claims 1 to 5.
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| CN114688683B (en) * | 2022-03-15 | 2024-05-24 | 青岛海尔空调器有限总公司 | Air conditioner and defrosting control method thereof |
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