CN110173828B - Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium - Google Patents
Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium Download PDFInfo
- Publication number
- CN110173828B CN110173828B CN201910461883.9A CN201910461883A CN110173828B CN 110173828 B CN110173828 B CN 110173828B CN 201910461883 A CN201910461883 A CN 201910461883A CN 110173828 B CN110173828 B CN 110173828B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- indoor heat
- indoor
- air conditioner
- humidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F2110/20—Humidity
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a self-cleaning method of an indoor heat exchanger, which comprises the following steps: controlling the air conditioner to operate in a cooling mode so that condensed water and frost are generated on the surface of the indoor heat exchanger; when the time length of the air conditioner in the refrigeration running mode reaches the target time length, the air conditioner is controlled in the heating running mode to defrost the indoor heat exchanger, wherein the target time length is determined according to the indoor humidity, the target time length and the indoor humidity are in a negative correlation relationship, or when the indoor humidity is reduced, the target time length is increased in a stepped mode. The invention also discloses an air conditioner and a computer readable storage medium. The refrigerating time of the air conditioner is reasonable when the indoor heat exchanger is cleaned.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a self-cleaning method of an indoor heat exchanger and a computer readable storage medium.
Background
After the air conditioner is used for a long time, a large amount of dust and dirt are accumulated on the filter screen. After the air conditioner is started to operate, dust on the filter screen can enter the indoor evaporator along with air, so that the dust is attached to the indoor heat exchanger, the surface of the indoor heat exchanger is accumulated with dust, the heat exchange performance of the indoor heat exchanger is reduced, the energy consumption of the air conditioner is increased, and the refrigeration effect is low. Meanwhile, a large amount of bacteria can be bred in dust and dirt of the indoor heat exchanger, and the health problem of a user is caused.
In the prior art, the air conditioner enables the surface of the indoor heat exchanger to be frosted so as to clean dust and dirt through the operation refrigeration mode, and the operation duration of the refrigeration mode is generally fixed duration, so that the condensate water generated on the surface of the indoor heat exchanger is too little or too much. When the condensed water is too little, the dust and dirt of the indoor heat exchanger can not be thoroughly removed; and excessive condensed water can lead to more frost formation on the surface of the indoor heat exchanger, lead to more frost formation of the indoor heat exchanger and waste energy consumption of the air conditioner. That is, the prior art has the problem that the refrigerating time of the air conditioner is unreasonable when the indoor heat exchanger is cleaned.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a self-cleaning method of an indoor heat exchanger and a computer readable storage medium, and aims to solve the problem that the refrigerating mode of the air conditioner is unreasonable in duration when the indoor heat exchanger is cleaned.
In order to achieve the above object, the present invention provides a self-cleaning method for an indoor heat exchanger, which comprises the following steps:
controlling the air conditioner to operate in a cooling mode so that condensed water and frost are generated on the surface of the indoor heat exchanger;
when the time length of the air conditioner in the refrigeration operation mode reaches a target time length, controlling the air conditioner in the heating operation mode to defrost the indoor heat exchanger, wherein the target time length is determined according to indoor humidity, and the target time length is in a negative correlation relation with the indoor humidity, or the target time length is in a negative correlation relation with the indoor humidity:
(x) target duration, x indoor humidity, nm-1Greater than n1And a is amIs less than a1. In an embodiment, the indoor humidity is determined according to a difference between an indoor temperature and a coil temperature of the indoor heat exchanger, the indoor humidity is determined according to humidity acquired by a humidity sensor, or the indoor humidity is determined according to outdoor humidity in weather information corresponding to an area where the air conditioner is located.
In one embodiment, during the cooling mode of the air conditioner, the space where the air conditioner is located is humidified.
In an embodiment, the coil temperature of the indoor heat exchanger is greater than 2 ℃ and less than 20 ℃ when condensed water is produced in the indoor heat exchanger.
In one embodiment, the air conditioner controls the rotation speed of the indoor fan and/or the running frequency of the compressor, so that the coil temperature of the indoor heat exchanger is greater than 2 ℃ and less than 20 ℃.
In one embodiment, the air conditioner controls the rotation speed of the indoor fan according to the indoor humidity, and the relationship between the rotation speed of the indoor fan and the indoor humidity is as follows:
is the rotation speed, y is the indoor humidity, dm-1Greater than d1And b ismGreater than b1. In one embodiment, the self-cleaning method of the indoor heat exchanger further includes:
when the time length of the air conditioner in the heating mode reaches a preset time length, acquiring the outdoor temperature;
when the outdoor temperature is greater than or equal to a preset temperature, controlling the compressor to stop;
and when the outdoor temperature is lower than the preset temperature, controlling the compressor to operate at a preset operation frequency, wherein the preset operation frequency is higher than zero and lower than the operation frequency of the compressor during defrosting of the indoor heat exchanger.
In one embodiment, when the indoor humidity is greater than 80%, the time for the indoor heat exchanger to generate condensed water is less than or equal to 5 min; when the indoor humidity is less than or equal to 80% and greater than 60%, the time for generating condensed water by the indoor heat exchanger is greater than 5min and less than or equal to 8 min; when the indoor humidity is less than or equal to 60% and greater than 40%, the time for the indoor heat exchanger to generate condensed water is greater than 8min and less than or equal to 10 min.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a self-cleaning program of an indoor heat exchanger stored in the memory and operable on the processor, wherein the self-cleaning program of the indoor heat exchanger is executed by the processor to implement the steps of the self-cleaning method of the indoor heat exchanger as described above.
To achieve the above object, the present invention also provides a computer readable storage medium including a self-cleaning program of an indoor heat exchanger, which when executed by a processor, implements the steps of the self-cleaning method of an indoor heat exchanger as described above.
According to the air conditioner, the self-cleaning method of the indoor heat exchanger and the computer readable storage medium, when the indoor heat exchanger needs to be cleaned, the air conditioner is controlled to operate in the refrigeration mode, so that the indoor heat exchanger frosts, and when the time length of the air conditioner in the refrigeration mode reaches the target time length, the air conditioner is controlled to operate in the heating mode to defrost the indoor heat exchanger; the air conditioner determines the running time of the refrigeration mode according to the indoor humidity, so that a proper amount of condensed water is generated on the surface of the indoor heat exchanger, the waste energy consumption of the air conditioner is avoided on the premise that the dust and dirt of the indoor heat exchanger can be thoroughly removed, and the running time of the refrigeration mode of the air conditioner is reasonable.
Drawings
FIG. 1 is a schematic diagram of a hardware structure of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a self-cleaning method for an indoor heat exchanger according to the present invention;
fig. 3 is a schematic flow chart of a self-cleaning method for an indoor heat exchanger according to a second 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: controlling the air conditioner to operate in a cooling mode so that condensed water and frost are generated on the surface of the indoor heat exchanger; and when the time length of the air conditioner in the cooling operation mode reaches the target time length, controlling the air conditioner in the heating operation mode to defrost the indoor heat exchanger, wherein the target time length is determined according to the indoor humidity.
The air conditioner determines the running time of the refrigeration mode according to the indoor humidity, so that a proper amount of condensed water is generated on the surface of the indoor heat exchanger, the waste energy consumption of the air conditioner is avoided on the premise that the dust and dirt of the indoor heat exchanger can be thoroughly removed, and the running time of the refrigeration mode of the air conditioner is reasonable.
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 1001, such as a CPU, a memory 1002, and a communication bus 1003. The communication bus 1003 is used to implement connection communication among these components.
The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a self-cleaning program of the indoor heat exchanger may be included in the memory 1002 as a kind of computer storage medium; and the processor 1001 may be configured to invoke a self-cleaning program of the indoor heat exchanger stored in the memory 1002, and perform the following operations:
controlling the air conditioner to operate in a cooling mode so that condensed water and frost are generated on the surface of the indoor heat exchanger;
when the time length of the air conditioner in the refrigeration operation mode reaches a target time length, controlling the air conditioner in the heating operation mode to defrost the indoor heat exchanger, wherein the target time length is determined according to indoor humidity, and the target time length is in a negative correlation relation with the indoor humidity, or the target time length is in a negative correlation relation with the indoor humidity:
(x) target duration, x indoor humidity, nm-1Greater than n1And a is amIs less than a1。
In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
the indoor humidity is determined according to the difference between the indoor temperature and the temperature of the coil of the indoor heat exchanger, the indoor humidity is determined according to the humidity acquired by the humidity sensor, or the indoor humidity is determined according to the outdoor humidity in the weather information corresponding to the area where the air conditioner is located.
In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
and humidifying the space where the air conditioner is located in the process of operating the air conditioner in a refrigeration mode.
In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
when condensed water is generated in the indoor heat exchanger, the coil temperature of the indoor heat exchanger is more than 2 ℃ and less than 20 ℃.
In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
the air conditioner controls the rotating speed of an indoor fan and/or the operating frequency of a compressor, so that the temperature of a coil pipe of the indoor heat exchanger is higher than 2 ℃ and lower than 20 ℃.
In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
the air conditioner controls the rotating speed of the indoor fan according to the indoor humidity, and the relation between the rotating speed of the indoor fan and the indoor humidity is as follows:
f (y) is the rotation speed, y is the indoor humidity, dm-1Greater than d1And b ismGreater than b1. In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
when the time length of the air conditioner in the heating mode reaches a preset time length, acquiring the outdoor temperature;
when the outdoor temperature is greater than or equal to a preset temperature, controlling the compressor to stop;
and when the outdoor temperature is lower than the preset temperature, controlling the compressor to operate at a preset operation frequency, wherein the preset operation frequency is higher than zero and lower than the operation frequency of the compressor during defrosting of the indoor heat exchanger.
In an embodiment, the processor 1001 may be configured to invoke a self-cleaning program for the indoor heat exchanger stored in the memory 1002 and perform the following operations:
when the indoor humidity is greater than 80%, the time for generating condensed water by the indoor heat exchanger is less than or equal to 5 min; when the indoor humidity is less than or equal to 80% and greater than 60%, the time for generating condensed water by the indoor heat exchanger is greater than 5min and less than or equal to 8 min; when the indoor humidity is less than or equal to 60% and greater than 40%, the time for the indoor heat exchanger to generate condensed water is greater than 8min and less than or equal to 10 min.
According to the scheme, when the indoor heat exchanger needs to be cleaned, the air conditioner is controlled to operate in the cooling mode, so that the indoor heat exchanger frosts, and when the time length of the air conditioner in the cooling mode reaches the target time length, the air conditioner is controlled to operate in the heating mode to defrost the indoor heat exchanger; the air conditioner determines the running time of the refrigeration mode according to the indoor humidity, so that a proper amount of condensed water is generated on the surface of the indoor heat exchanger, the waste energy consumption of the air conditioner is avoided on the premise that the dust and dirt of the indoor heat exchanger can be thoroughly removed, and the running time of the refrigeration mode of the air conditioner is reasonable.
Based on the hardware architecture, the embodiment of the self-cleaning method of the indoor heat exchanger is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a self-cleaning method of an indoor heat exchanger according to the present invention, the self-cleaning method of an indoor heat exchanger including the steps of:
step S10, controlling the air conditioner to operate in a cooling mode to make the surface of the indoor heat exchanger generate condensed water and frost;
in the present invention, the execution body is an air conditioner. The air conditioner can regularly wash the indoor heat exchanger, namely when the current time point is the timing time point, judge that the indoor heat exchanger satisfies the clean condition to wash the indoor heat exchanger. The air conditioner may correct the timing point according to the current time and the current operation state of the air conditioner. Specifically, when the air conditioner is used for cleaning the indoor heat exchanger, the air conditioner needs to operate a refrigeration mode to generate condensed water, the air conditioner can select a time point with higher indoor humidity to clean the indoor heat exchanger, namely, the timing time point is corrected to the time point with higher indoor humidity, and the indoor humidity can be determined according to weather information. When the current time point reaches the timing time point, the air conditioner determines the current operation state, if the air conditioner is in the working state, the user is indicated to have the heating requirement or the refrigerating requirement, at the moment, the air conditioner does not clean the indoor heat exchanger, but cleans the indoor heat exchanger when the air conditioner is not in the operation state, and the timing time point is corrected to be the time point when the air conditioner is not in operation. Of course, the user can trigger the indoor heat exchanger to clean dust and dirt, so that the air conditioner can clean the indoor heat exchanger.
The air conditioner operates a cooling mode when the indoor heat exchanger needs to be cleaned. The air conditioner operates in a cooling mode such that the surface of the indoor heat exchanger is frosted.
Step S20, when the time length of the air conditioner running in the cooling mode reaches the target time length, the air conditioner is controlled to run in the heating mode to defrost the indoor heat exchanger, wherein the target time length is determined according to the indoor humidity, the target time length and the indoor humidity are in a negative correlation relationship, or when the indoor humidity is reduced, the target time length is increased in a stepped mode.
The indoor heat exchanger needs to generate enough condensed water to ensure that the indoor heat exchanger can more thoroughly clean dust and dirt. Therefore, the air conditioner obtains the current indoor humidity, the target duration of the condensation water stage can be determined according to the indoor humidity and the target water amount, and the target duration of the refrigeration mode of the air conditioner is determined according to the indoor humidity. The larger the indoor humidity is, the smaller the target time duration is, that is, the target time duration is in a negative correlation with the indoor humidity. Alternatively, the target duration may be increased in a stepwise manner as the indoor humidity decreases.
Specifically, target duration and indoorThe relationship of humidity is:
(x) target duration, x indoor humidity, nm-1Greater than n1And a is amIs less than a1. It should be noted that the humidity interval is divided into a plurality of intervals, such as (0, n)1]、(n1，n2]、(n2，n3]、…(nm-2，nm-1]、(nm-1，100％]And the target time period a becomes smaller as the humidity interval becomes larger.
When the time length of the air conditioner in the cooling operation mode reaches the target time length, the air conditioner is controlled to operate in the heating operation mode, and therefore defrosting is conducted on the indoor heat exchanger. After defrosting is finished, the air conditioner can continue to operate the heating mode to dry the indoor heat exchanger so as to clean dust and dirt of the indoor heat exchanger.
In the technical scheme provided by the embodiment, when the indoor heat exchanger needs to be cleaned, the air conditioner is controlled to operate in the cooling mode, so that the indoor heat exchanger frosts, and when the time length of the air conditioner in the cooling mode reaches the target time length, the air conditioner is controlled to operate in the heating mode to defrost the indoor heat exchanger; the air conditioner determines the running time of the refrigeration mode according to the indoor humidity, so that a proper amount of condensed water is generated on the surface of the indoor heat exchanger, the waste energy consumption of the air conditioner is avoided on the premise that the dust and dirt of the indoor heat exchanger can be thoroughly removed, and the running time of the refrigeration mode of the air conditioner is reasonable.
In one embodiment, when the air conditioner operates in the cooling mode, the state of the condensed water on the indoor heat exchanger is changed from a full liquid state to an at least partially solid state, a stage when the condensed water is in the full liquid state is defined as a condensed water cleaning stage, and a stage when at least a portion of the condensed water is in the solid state is defined as a condensed water frosting stage. Namely, when the air conditioner refrigerates, the indoor heat exchanger sequentially enters a condensed water cleaning stage and a condensed water frosting stage. It is understood that the condensed water cleaning stage refers to that the surface of the indoor heat exchanger is condensed into liquid water, and the condensed water frosting stage refers to that the condensed water on the surface of the indoor heat exchanger is frosted. When the indoor heat exchanger is in a condensed water cleaning stage, the temperature of a coil of the indoor heat exchanger needs to be controlled to be within a preset temperature range, the preset temperature range can be 2-20 ℃, and when the temperature of the coil is within the preset temperature range, liquid condensed water is on the surface of the indoor heat exchanger. The air conditioner can control the rotating speed of the indoor fan to enable the temperature of the coil to be in a preset temperature interval, and certainly can also control the operating frequency of the compressor to enable the temperature of the coil to be in the preset temperature interval.
The duration of the condensate wash phase may also be determined simultaneously with the determination of the indoor humidity. And when the duration of the condensed water cleaning stage reaches a calculated value, controlling the indoor heat exchanger to enter a condensed water frosting stage. In the condensed water cleaning stage, the temperature of the coil is within a preset temperature interval, and the air conditioner adjusts the operation parameters to enable the temperature of the coil to be lower than the minimum value of the preset temperature interval, so that the condensed water on the surface of the indoor heat exchanger is frosted, and the indoor heat exchange is enabled to enter the condensed water frosting stage from the condensed water cleaning stage.
The adjusted operation parameters can be the operation frequency of the compressor and the rotating speed of the indoor fan, namely the air conditioner can increase the operation frequency of the compressor, reduce the rotating speed of the indoor fan, or increase the operation frequency of the compressor and reduce the rotating speed of the indoor fan, so that the indoor heat exchanger enters a condensed water frosting stage from a condensed water cleaning stage.
The air conditioner can be according to the rotational speed of indoor humidity control indoor fan, and indoor humidity is higher, and the rotational speed of indoor fan is big more, also when indoor humidity is high more, and the rotational speed of air conditioner fan in through the control room runs with the great value for the air that gets into indoor heat exchanger is more, thereby makes the quick production comdenstion water of indoor heat exchanger. Specifically, the method comprises the following steps:
the relation between the rotating speed of the indoor fan and the indoor humidity is as follows:
f (y) is the rotational speed, y isIndoor humidity, dm-1Greater than d1And b ismGreater than b1。
In this embodiment, the comparatively easy abluent dirt in indoor heat exchanger surface is washd preliminarily through the comdenstion water of comdenstion water washing stage for the dirt on the indoor heat exchanger washs more thoroughly.
In one embodiment, when defrosting the indoor heat exchanger, the condensed water frosted on the indoor heat exchanger is converted into a vapor state and a liquid state in sequence. And defining a time period for converting frosted condensed water into a steam state as a steam cleaning stage, and defining a time period for converting frosted condensed water into a liquid state as a defrosting cleaning stage. The steam cleaning stage can be before the defrosting cleaning stage, and when the indoor heat exchanger is in the steam cleaning stage, the operating frequency of the compressor is higher than the operating frequency corresponding to the indoor heat exchanger in the defrosting cleaning stage, that is, the air conditioner enables the indoor heat exchanger to enter the defrosting cleaning stage from the steam cleaning stage by reducing the operating frequency of the compressor.
The duration of the condensed water frosting period may be a set value, which may be any suitable value, for example, 10 min. And when the duration of the condensed water frosting stage reaches a set value, controlling the air conditioner to be switched from the cooling mode to the heating mode. When the air conditioner operates in a heating mode, the indoor heat exchanger sequentially enters a steam cleaning stage and a heating and drying stage. The steam cleaning stage is to convert the frosted condensed water into steam, and the surface of the indoor heat exchanger is cleaned through the steam. And the heating and drying stage is to heat the surface of the indoor heat exchanger and remove the condensed water on the surface of the indoor heat exchanger. When the indoor heat exchanger is in a steam cleaning stage, the operating frequency of the compressor is high frequency, the high frequency is preferably the maximum operating frequency to ensure that frosted condensate water is converted into steam, and the indoor fan is in a stop state to avoid blowing out the steam, so that the steam cleaning amount of dust and dirt of the indoor heat exchanger is ensured.
The duration of the steam cleaning phase may also be a set value, which may be any suitable value, for example, 3 min. And when the duration of the steam cleaning stage reaches a set value, controlling the indoor heat exchanger to enter a heating and drying stage. The heating and drying stage does not require the operation frequency of the compressor, so the frequency of the compressor in the heating and drying stage is not high. The heating and drying stage may last for a certain period of time, for example, 5 min.
In this embodiment, the dust and dirt that becomes loose is removed through the steam in the steam cleaning stage, and steam can stretch into other dust and dirt that are difficult to remove inside simultaneously, makes it become loose and peels off the dust and dirt from indoor heat exchanger to make the dust and dirt on the indoor heat exchanger obtain more thorough clearance, the dust and dirt of indoor heat exchanger is clear away effectually.
In one embodiment, when the air conditioner operates in the cooling mode, the coil temperature and the indoor humidity of the indoor heat exchanger are acquired to determine the indoor humidity. Specifically, the air conditioner acquires an indoor temperature and a coil temperature of the indoor heat exchanger, and calculates a difference between the indoor temperature and the coil temperature, thereby determining an indoor humidity according to the difference. For example, the operation frequency is 80Hz, when the indoor temperature is 10 ℃ and the coil temperature is 15 ℃, the difference is-5 ℃ and the indoor humidity corresponding to the operation frequency of 80Hz is about 50%, and when the operation frequency is constant, the smaller the difference is, the larger the indoor humidity is. In addition, the indoor humidity can be directly detected by a humidity sensor on the air conditioner, and the humidity sensor can also be an external device of the air conditioner. Or, the outdoor humidity in the weather information of the area where the air conditioner is located is determined, namely the air conditioner is connected with the home network through the WIFI module, the weather information of the area where the air conditioner is located is obtained through the home network, so that the outdoor humidity is obtained, and the outdoor humidity is used as the indoor humidity. After the indoor humidity is determined, the accumulated time of the refrigeration mode can be determined according to the indoor humidity. For example, when the indoor humidity is more than 80%, the time for the indoor heat exchanger to produce condensed water is less than or equal to 5 min; when the indoor humidity is more than 60% and less than or equal to 80%, the time for the indoor heat exchanger to generate condensed water is more than 5min and less than or equal to 8 min; the indoor humidity is more than 40% and less than or equal to 60%, and the time for the indoor heat exchanger to generate condensed water is more than 8min and less than or equal to 10 min.
It should be noted that, when testing the relationship between the difference between the indoor temperature and the coil temperature and the indoor humidity, the operating frequency of the compressor is high frequency, so in this embodiment, it needs to determine whether the frequency of the compressor is high frequency, and if so, the indoor humidity is determined according to the difference between the indoor temperature and the coil temperature; if not, determining the indoor humidity according to the humidity sensor or the weather information.
In one embodiment, in order to enable the air conditioner to rapidly generate enough condensed water, the air conditioner humidifies the space where the air conditioner is located during the cooling mode, so as to increase the indoor humidity. The air conditioner can operate in a humidifying mode to humidify the space where the air conditioner is located, namely, to humidify the indoor space. Of course, the air conditioner can be linked with the household appliance with the humidifying function, and when the air conditioner operates in the refrigeration mode to perform self-cleaning of the indoor heat exchanger, the air conditioner sends a humidifying request to the household appliance, so that the household appliance humidifies the indoor space. Of course, the air conditioner or the household appliance can humidify the indoor in advance, so that the indoor heat exchanger can be self-cleaned conveniently.
In the technical scheme provided by the embodiment, when the air conditioner operates in the refrigeration mode to clean the indoor heat exchanger, the space where the air conditioner is located is humidified, so that the air conditioner can quickly generate enough condensed water to clean the indoor heat exchanger, and the cleaning time of the indoor heat exchanger is shortened.
Referring to fig. 3, fig. 3 is a second embodiment of the self-cleaning method for an indoor heat exchanger according to the present invention, and based on the first embodiment, the self-cleaning method for an indoor heat exchanger, that is, step S20, further includes:
step S21 is to obtain the outdoor temperature when the time of the air conditioner running in the heating mode reaches the preset time
Step S22, judging whether the outdoor temperature is less than a preset temperature;
step S23, when the outdoor temperature is larger than or equal to the preset temperature, the compressor is controlled to stop;
and step S24, when the outdoor temperature is lower than a preset temperature, controlling the compressor to operate at a preset operation frequency, wherein the preset operation frequency is higher than zero and lower than the operation frequency of the compressor when the indoor heat exchanger defrosts.
In this embodiment, when the air conditioner finishes defrosting the indoor heat exchanger, the compressor can be directly controlled to stop, so that the indoor heat exchanger is naturally dried, and the energy consumption of the air conditioner is further saved. Further, when the air conditioner finishes defrosting the indoor heat exchanger, and the running duration of the air conditioner reaches the preset duration, it can be judged that the air conditioner finishes defrosting the indoor heat exchanger. At the moment, the air conditioner acquires the outdoor temperature and judges whether the outdoor temperature is greater than the preset temperature or not, if the outdoor temperature is greater than the preset temperature, the temperature of the external environment is higher, the indoor heat exchanger can be dried in a natural drying mode, and the compressor is controlled to stop. If the outdoor temperature is less than or equal to the preset temperature, the outdoor temperature is low, the time consumed for naturally drying the indoor heat exchanger is long, at the moment, the air conditioner controls the compressor to operate in a low-frequency operation heating mode to dry the indoor heat exchanger, the low frequency is the preset operation frequency, and the preset operation frequency can be 0.1 Hz. It should be noted that, when the air conditioner finishes drying the indoor heat exchanger and enters the cooling mode, the temperature of the coil of the indoor heat exchanger can be rapidly reduced, and if the temperature of the coil of the indoor heat exchanger finishes drying is higher, the reduction range of the temperature of the coil is larger, so that the indoor heat exchanger generates noise. This embodiment is dried in order to indoor heat transfer through control compressor according to less running frequency operation, perhaps through stopping the compressor operation for indoor heat exchanger's coil pipe temperature is less, when making the air conditioner finish getting into the mode of refrigeration to indoor heat exchanger's stoving, indoor heat exchanger's coil pipe temperature reduction range is less, avoids indoor heat exchanger to produce the noise.
It should be noted that, if the outdoor temperature is higher, the air conditioner can control the air outlet and the air return opening to increase the heat exchange between the indoor air and the air in the air duct of the air conditioner, so that the indoor heat exchanger can remove the residual water vapor faster.
In addition, if the outdoor temperature is higher, the air conditioner can detect the concentration of indoor particulate matters, namely the content of indoor dust, and if the concentration of the particulate matters is higher, the air conditioner continues to operate the heating mode to enable the indoor heat exchanger to enter a heating and drying stage so as to prevent residual water vapor on the surface of the indoor heat exchanger from adhering to the indoor dust; if the concentration of the particulate matters is lower, the air conditioner body exits from the heating mode, and the indoor fan is controlled to operate, so that the indoor heat exchanger can be dried more quickly.
In the technical scheme that this embodiment provided, when indoor heat exchanger finishes defrosting, obtain outdoor temperature, if outdoor temperature is higher than preset temperature, then control the compressor and shut down to carry out the nature stoving to indoor heat exchanger, saved the energy consumption of air conditioner.
In one embodiment, the air conditioner can judge whether the indoor heat exchanger meets the cleaning condition through the accumulated use time of the filter screen. When the air conditioner runs, the filter screen can adsorb dust, but the filter screen can not adsorb the dust in the air completely, and the dust that is not adsorbed can deposit on indoor heat exchanger surface, therefore, the long accumulative length of service of filter screen represents the accumulative degree of dust on indoor heat exchanger surface. And if the accumulated use time of the filter screen reaches the second preset time, judging that the indoor heat exchanger needs to be cleaned by dust and dirt. It should be noted that after the indoor heat exchanger is cleaned, the accumulated usage time of the filter screen is cleared.
In one embodiment, the air conditioner can judge whether the indoor heat exchanger meets the cleaning condition through the accumulated running time of the fresh air function. Specifically, outdoor particulate matter concentration is higher, and when the air conditioner operation new trend function, because indoor heat exchanger can cool off or heat outdoor air for outdoor air's particulate matter can deposit on indoor heat exchanger's surface. And if the accumulated operation time of the fresh air operation function of the air conditioner reaches the third preset time, the fact that the dust and dirt on the surface of the indoor heat exchanger are more indicates that the air conditioner needs to be cleaned.
In one embodiment, when defrosting the indoor heat exchanger, the condensed water frosted on the indoor heat exchanger is converted into a vapor state and a liquid state in sequence. And defining a time period for converting frosted condensed water into a steam state as a steam cleaning stage, and defining a time period for converting frosted condensed water into a liquid state as a defrosting cleaning stage. The steam cleaning stage can be before the defrosting cleaning stage, and when the indoor heat exchanger is in the steam cleaning stage, the operating frequency of the compressor is higher than the operating frequency corresponding to the indoor heat exchanger in the defrosting cleaning stage, that is, the air conditioner enables the indoor heat exchanger to enter the defrosting cleaning stage from the steam cleaning stage by reducing the operating frequency of the compressor.
The duration of the condensed water frosting period may be a set value, which may be any suitable value, for example, 10 min. And when the duration of the condensed water frosting stage reaches a set value, controlling the air conditioner to be switched from the cooling mode to the heating mode. When the air conditioner operates in a heating mode, the indoor heat exchanger sequentially enters a steam cleaning stage and a heating and drying stage. The steam cleaning stage is to convert the frosted condensed water into steam, and the surface of the indoor heat exchanger is cleaned through the steam. And the heating and drying stage is to heat the surface of the indoor heat exchanger and remove the condensed water on the surface of the indoor heat exchanger. When the indoor heat exchanger is in a steam cleaning stage, the operating frequency of the compressor is high frequency, the high frequency is preferably the maximum operating frequency to ensure that frosted condensate water is converted into steam, and the indoor fan is in a stop state to avoid blowing out the steam, so that the steam cleaning amount of dust and dirt of the indoor heat exchanger is ensured.
The duration of the steam cleaning phase may also be a set value, which may be any suitable value, for example, 3 min. And when the duration of the steam cleaning stage reaches a set value, controlling the indoor heat exchanger to enter a heating and drying stage. The heating and drying stage does not require the operation frequency of the compressor, so the frequency of the compressor in the heating and drying stage is not high. The heating and drying stage may last for a certain period of time, for example, 5 min.
In this embodiment, the dust and dirt that becomes loose is removed through the steam in the steam cleaning stage, and steam can stretch into other dust and dirt that are difficult to remove inside simultaneously, makes it become loose and peels off the dust and dirt from indoor heat exchanger to make the dust and dirt on the indoor heat exchanger obtain more thorough clearance, the dust and dirt of indoor heat exchanger is clear away effectually.
In one embodiment, after the air conditioner exits the heating mode, the indoor fan is controlled to be in an operating state, so that the residual heat of the indoor heat exchanger is blown out. The operating time of the indoor fan may be any suitable value, for example, 2 min.
This embodiment is through withdrawing from the mode of heating at the air conditioner after, the operation of control indoor fan to the remaining heat of indoor heat exchanger that the waste heat that blows off indoor heat exchanger avoids the indoor heat exchanger to cause the harm to the inside components and parts of air conditioner.
In one embodiment, after the condensed water frost stage is finished, the air conditioner controls the compressor to stop for a period of time, which may be any suitable value, for example, 3min, and then enters the heating mode. The air conditioner enables the pressure inside the compressor to tend to be stable by stopping the compressor for a period of time, and the condition that the compressor is damaged due to the fact that the refrigeration mode is directly switched to the heating mode is avoided. Further, when the compressor is shut down, the operation of the indoor fan can be controlled, namely, the frosted condensed water is preliminarily melted by the indoor fan, so that the time length of the air conditioner in the operation heating mode is shortened, and the energy consumption is saved.
In an embodiment, the defrosting time of the indoor heat exchanger by the air conditioner is determined by the time of the air conditioner operating in the cooling mode and the indoor humidity, and the time of the air conditioner operating in the cooling mode is the target time. Specifically, the target duration and the indoor humidity determine the amount of condensed water frosted on the indoor heat exchanger, and the amount of melted condensed water frosted in unit time is certain, so that the duration of the steam cleaning stage can be calculated through the target duration and the indoor humidity, and the duration of defrosting the indoor heat exchanger by the air conditioner can be reasonably continued.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a self-cleaning program of an indoor heat exchanger stored in the memory and operable on the processor, wherein the self-cleaning program of the indoor heat exchanger is executed by the processor to implement the steps of the self-cleaning method of the indoor heat exchanger as described in the above embodiment.
The present invention also provides a computer-readable storage medium, which includes a self-cleaning program of an indoor heat exchanger, and when executed by a processor, the self-cleaning program of the indoor heat exchanger implements the steps of the self-cleaning method of the indoor heat exchanger 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 substantially or partially 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 air conditioner (e.g. a mobile phone, a computer, a server, an air conditioner, or a network air conditioner, etc.) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A self-cleaning method of an indoor heat exchanger is characterized by comprising the following steps:
controlling an air conditioner to operate in a refrigeration mode so as to enable the surface of an indoor heat exchanger to generate condensed water and frost, and controlling the rotating speed of an indoor fan according to indoor humidity, wherein the relation between the rotating speed of the indoor fan and the indoor humidity is as follows:
f (y) is the rotation speed, y is the indoor humidity, dm-1Greater than d1And b ismGreater than b1；
When the time length of the air conditioner in the refrigeration operation mode reaches a target time length, controlling the air conditioner in the heating operation mode to defrost the indoor heat exchanger, wherein the target time length is determined according to the indoor humidity, and the target time length is in a negative correlation relation with the indoor humidity, or the target time length is in a negative correlation relation with the indoor humidity:
(x) target duration, x indoor humidity, nm-1Greater than n1And a is amIs less than a1。
2. A self-cleaning method of an indoor heat exchanger as claimed in claim 1, wherein the indoor humidity is determined according to a difference between an indoor temperature and a coil temperature of the indoor heat exchanger, the indoor humidity is determined according to a humidity collected by a humidity sensor, or the indoor humidity is determined according to an outdoor humidity in weather information corresponding to an area where the air conditioner is located.
3. A method of self-cleaning an indoor heat exchanger as claimed in claim 1, wherein a space where the air conditioner is located is humidified during a cooling mode of operation of the air conditioner.
4. The self-cleaning method of an indoor heat exchanger as claimed in claim 1, wherein a coil temperature of the indoor heat exchanger is more than 2 ℃ and less than 20 ℃ when the indoor heat exchanger generates condensed water.
5. The self-cleaning method of an indoor heat exchanger as claimed in claim 4, wherein the air conditioner controls the rotation speed of an indoor fan and/or the operation frequency of a compressor so that the coil temperature of the indoor heat exchanger is more than 2 ℃ and less than 20 ℃.
6. The self-cleaning method of an indoor heat exchanger as claimed in any one of claims 1 to 5, further comprising:
when the time length of the air conditioner in the heating mode reaches a preset time length, acquiring the outdoor temperature;
when the outdoor temperature is greater than or equal to a preset temperature, controlling the compressor to stop;
and when the outdoor temperature is lower than the preset temperature, controlling the compressor to operate at a preset operation frequency, wherein the preset operation frequency is higher than zero and lower than the operation frequency of the compressor during defrosting of the indoor heat exchanger.
7. The self-cleaning method of an indoor heat exchanger as claimed in any one of claims 1 to 5, wherein a time period for which the indoor heat exchanger produces condensed water is less than or equal to 5min at the indoor humidity of more than 80%; when the indoor humidity is less than or equal to 80% and greater than 60%, the time for generating condensed water by the indoor heat exchanger is greater than 5min and less than or equal to 8 min; when the indoor humidity is less than or equal to 60% and greater than 40%, the time for the indoor heat exchanger to generate condensed water is greater than 8min and less than or equal to 10 min.
8. An air conditioner, characterized in that the air conditioner comprises a memory, a processor and a self-cleaning program of an indoor heat exchanger stored in the memory and operable on the processor, the self-cleaning program of the indoor heat exchanger being executed by the processor to implement the steps of the self-cleaning method of the indoor heat exchanger as recited in any one of claims 1 to 7.
9. A computer readable storage medium, characterized in that the computer readable storage medium comprises a self-cleaning program of an indoor heat exchanger, which cleaning program of the indoor heat exchanger when executed by a processor implements the steps of the self-cleaning method of an indoor heat exchanger according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461883.9A CN110173828B (en) | 2019-05-29 | 2019-05-29 | Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461883.9A CN110173828B (en) | 2019-05-29 | 2019-05-29 | Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110173828A CN110173828A (en) | 2019-08-27 |
| CN110173828B true CN110173828B (en) | 2021-04-27 |
Family
ID=67696759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910461883.9A Active CN110173828B (en) | 2019-05-29 | 2019-05-29 | Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110173828B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736196B (en) * | 2019-09-30 | 2021-10-29 | 青岛海尔空调器有限总公司 | Control method and device for self-cleaning of air conditioner and air conditioner |
| CN110822636B (en) * | 2019-11-27 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioner, self-cleaning control method and device thereof and storage medium |
| CN110848882B (en) * | 2019-11-29 | 2021-07-20 | 广东美的制冷设备有限公司 | Air conditioner and self-cleaning control method and device thereof |
| CN110848879A (en) * | 2019-11-29 | 2020-02-28 | 广东美的制冷设备有限公司 | Air conditioner and self-cleaning control method and device thereof |
| CN111397120B (en) * | 2020-03-20 | 2021-12-24 | 珠海格力电器股份有限公司 | Air conditioner self-cleaning control method and device, storage medium and air conditioner |
| CN111380154A (en) * | 2020-03-27 | 2020-07-07 | 广东美的制冷设备有限公司 | Intelligent cleaning control method for air conditioner |
| CN111854044A (en) * | 2020-07-24 | 2020-10-30 | 广东美的暖通设备有限公司 | Self-cleaning method and device of air conditioner, air conditioner and electronic equipment |
| CN111854052A (en) * | 2020-07-24 | 2020-10-30 | 广东美的暖通设备有限公司 | Self-cleaning method and device of air conditioner, air conditioner and electronic equipment |
| CN111854049A (en) * | 2020-07-24 | 2020-10-30 | 广东美的暖通设备有限公司 | Self-cleaning method and device of air conditioner, air conditioner and electronic equipment |
| CN111854041A (en) * | 2020-07-24 | 2020-10-30 | 广东美的暖通设备有限公司 | Self-cleaning reminding method and device for air conditioner, air conditioner and electronic equipment |
| CN111854055A (en) * | 2020-07-27 | 2020-10-30 | 广东美的暖通设备有限公司 | Self-cleaning method and device of air conditioner, air conditioner and electronic equipment |
| CN111895494B (en) * | 2020-08-14 | 2021-12-07 | 珠海格力电器股份有限公司 | Cooling system, cooling system control method and air conditioning system |
| CN115183429B (en) * | 2022-08-17 | 2024-05-10 | 宁波奥克斯电气股份有限公司 | Air conditioner self-cleaning control method and device, air conditioner and storage medium |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009236381A (en) * | 2008-03-26 | 2009-10-15 | Toshiba Carrier Corp | Indoor unit for air conditioner |
| CN102878640A (en) * | 2012-09-26 | 2013-01-16 | 广东志高空调有限公司 | Air conditioner control method for automatic cleaning |
| CN105605742B (en) * | 2016-01-26 | 2019-02-15 | 广东美的制冷设备有限公司 | The clean method of heat exchanger of air conditioner |
| CN106016616B (en) * | 2016-06-03 | 2018-12-25 | 广东美的制冷设备有限公司 | Air-conditioning condensation prevention control method and air conditioner |
| CN106322658A (en) * | 2016-08-23 | 2017-01-11 | 广东美的制冷设备有限公司 | Cleaning control method and device for heat exchanger of air conditioner |
| CN106765926B (en) * | 2016-12-08 | 2020-08-04 | 美的集团武汉制冷设备有限公司 | Cleaning control method and device for heat exchanger of air conditioner |
| JP6349013B1 (en) * | 2017-05-26 | 2018-06-27 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioner |
| CN107525216A (en) * | 2017-07-26 | 2017-12-29 | 青岛海尔空调器有限总公司 | Air conditioner and its control method with self-cleaning function |
| CN107514682A (en) * | 2017-07-26 | 2017-12-26 | 青岛海尔空调器有限总公司 | Air conditioner room unit with self-cleaning function |
| CN109469965B (en) * | 2017-09-08 | 2020-10-23 | 奥克斯空调股份有限公司 | Cleaning method of air conditioner |
-
2019
- 2019-05-29 CN CN201910461883.9A patent/CN110173828B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110173828A (en) | 2019-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110173828B (en) | Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium | |
| CN110173826B (en) | Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium | |
| CN110173846A (en) | The self cleaning method and computer readable storage medium of air conditioner, indoor heat exchanger | |
| CN106679111B (en) | Automatic cleaning treatment method and system for heat exchanger of air conditioner | |
| CN111356881B (en) | Air conditioner and control method thereof | |
| CN107449070B (en) | Cleaning method and device for heat exchanger of air conditioner outdoor unit and air conditioner | |
| WO2019024681A1 (en) | Control method and device for self-cleaning of air conditioner | |
| CN111380180A (en) | Air conditioner sterilization control method and device and computer readable storage medium | |
| CN104848507A (en) | Cleaning method and cleaning device of air conditioner | |
| CN105910228B (en) | Air conditioner automatically cleaning operation method | |
| CN109855191A (en) | Multi-gang air-conditioner device and its control method | |
| CN108489046B (en) | Cleaning method and system and air conditioner | |
| CN104833067A (en) | Method and device for controlling heat exchange temperature, collecting condensed water and cleaning air conditioner | |
| JP7383829B2 (en) | Air conditioner cleaning method and air conditioner | |
| CN104833052A (en) | Method and device for collecting condensed water to clean air conditioner on basis of wind speed regulation | |
| CN105783200A (en) | Air-conditioner running control method | |
| CN111121257B (en) | Air conditioner self-cleaning method, device, equipment and storage medium | |
| CN104848481A (en) | Method and device for collecting condensed water to clean air conditioner based on rotation speed regulation of compressor | |
| CN111380154A (en) | Intelligent cleaning control method for air conditioner | |
| CN110173858B (en) | Air conditioner, self-cleaning control method thereof and computer readable storage medium | |
| WO2019148697A1 (en) | Self-cleaning control method and apparatus for air conditioner | |
| CN105783201B (en) | Air conditioner operation method | |
| CN111156648B (en) | Cleaning control method of air conditioner and air conditioner | |
| CN111854055A (en) | Self-cleaning method and device of air conditioner, air conditioner and electronic equipment | |
| CN111854048A (en) | Self-cleaning method and device of air conditioner, air conditioner and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |