CN113587360A - Control method of air conditioner indoor unit - Google Patents
Control method of air conditioner indoor unit Download PDFInfo
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- CN113587360A CN113587360A CN202110863961.5A CN202110863961A CN113587360A CN 113587360 A CN113587360 A CN 113587360A CN 202110863961 A CN202110863961 A CN 202110863961A CN 113587360 A CN113587360 A CN 113587360A
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- heat exchanger
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- inlet filter
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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
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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
Abstract
The invention discloses a control method of an air conditioner indoor unit, wherein the air conditioner indoor unit comprises a heat exchanger, an air inlet filter screen and an electric heating sterilization module arranged between the heat exchanger and the air inlet filter screen, and the control method comprises the following steps: detecting whether a sterilization mode starting signal is received or not; if so, entering a sterilization mode, starting the electric heating sterilization module, controlling the fan to rotate, guiding the airflow passing through the electric heating sterilization module to one of the heat exchanger and the air inlet filter screen so as to sterilize the one of the heat exchanger and the air inlet filter screen, and then reversing the air supply direction, guiding the airflow passing through the electric heating sterilization module to the other one of the heat exchanger and the air inlet filter screen so as to sterilize the other one of the heat exchanger and the air inlet filter screen. The control method of the air conditioner indoor unit provided by the embodiment of the invention can be used for sequentially sterilizing the heat exchanger and the air inlet filter screen, and has the advantages of good sterilization effect, long service life and the like.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner indoor unit.
Background
When the indoor unit of the air conditioner is used for a long time, the internal components of the air conditioner, such as: the heat exchanger and the air inlet filter screen are easy to adsorb more dust, so that mould is generated on the surfaces of the heat exchanger and the air inlet filter screen, and the air outlet quality of an indoor unit of the air conditioner is influenced.
Therefore, the air conditioner indoor unit in the related art performs sterilization and disinfection on the heat exchanger, the air inlet filter screen and the inside of the air conditioner by heating the heat exchanger through the operation of the compressor, so that the use load of the compressor is increased, and the temperature of the sterilization module is limited by the power of the compressor. Some air conditioner indoor units come to disinfect the disinfection to heat exchanger and air inlet filter screen through the mode of addding the sterilization module, but there is the disparity in the bactericidal effect of sterilization module to the heat exchanger and to the bactericidal effect of air inlet filter screen, can not guarantee to play more effectual bactericidal effect to heat exchanger and air inlet filter screen, influence bactericidal effect.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a control method for an air conditioner indoor unit, which can sequentially sterilize a heat exchanger and an intake air filter, and has the advantages of good sterilization effect, long service life, etc.
In order to achieve the above object, an embodiment of the present invention provides a control method for an air conditioner indoor unit, where the air conditioner indoor unit includes a heat exchanger, an intake air filter, and an electric heating sterilization module disposed between the heat exchanger and the intake air filter, and the control method includes: detecting whether a sterilization mode starting signal is received or not; if the air flow passes through the electric heating sterilization module, the electric heating sterilization module is started, the fan is controlled to rotate, the air flow passing through the electric heating sterilization module is guided to one of the heat exchanger and the air inlet filter screen so as to sterilize the one of the heat exchanger and the air inlet filter screen, and then the air flow passing through the electric heating sterilization module is guided to the other one of the heat exchanger and the air inlet filter screen by reversing the air supply direction so as to sterilize the other one of the heat exchanger and the air inlet filter screen.
The control method of the air conditioner indoor unit provided by the embodiment of the invention can be used for sequentially sterilizing the heat exchanger and the air inlet filter screen, and has the advantages of good sterilization effect, long service life and the like.
According to some embodiments of the present invention, when the heat exchanger is sterilized, control is performed to stop sterilizing the heat exchanger if one of the following conditions is satisfied: the current temperature of the heat exchanger is higher than a first preset temperature, and the first preset temperature is higher than the preset working temperature of the electric heating sterilization module; and the sterilization time of the heat exchanger reaches a first preset time.
According to some embodiments of the present invention, the preset working temperature of the electric heating sterilization module is 60 ℃ to 90 ℃; the first preset temperature is not higher than 100 ℃; the first preset time is 5-40 min.
According to some embodiments of the present invention, when the intake screen is sterilized, the control unit stops sterilizing the intake screen when one of the following conditions is satisfied: the current temperature of the air inlet filter screen is higher than a second preset temperature, and the second preset temperature is higher than the preset working temperature of the electric heating sterilization module; and the sterilization time of the air inlet filter screen reaches a second preset time.
According to some embodiments of the present invention, the preset working temperature of the electric heating sterilization module is 60 ℃ to 90 ℃; the second preset temperature is not higher than 100 ℃; the second preset time is 5 min-30 min.
According to some embodiments of the invention, in the sterilization mode, the fan is operated at a lowest wind speed.
According to some embodiments of the present invention, detecting whether a condition for exiting the sterilization mode is satisfied in the sterilization mode; if yes, the heating sterilization module is closed, and the rotating speed of the fan is increased.
According to some embodiments of the present invention, after the rotation speed of the fan is increased, the fan is controlled to stop when one of the following conditions is satisfied: the temperature of the heat exchanger is lower than a third preset temperature, the temperature of the air inlet filter screen is lower than a fourth preset temperature, and the temperature of the electric heating sterilization module is lower than a fifth preset temperature; and the running time of the fan after the rotating speed is increased reaches a third preset time.
According to some embodiments of the invention, the third preset temperature, the fourth preset temperature and the fifth preset temperature are all no higher than 25 ℃; the third preset time is 5 min-20 min.
According to some embodiments of the present invention, after entering the sterilization mode, the compressor is controlled to stop.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of an indoor unit of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating another embodiment of a method for controlling an indoor unit of an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more, and "several" means one or more.
A control method of an indoor unit of an air conditioner according to an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the indoor unit of the air conditioner includes a heat exchanger, an air intake filter screen, and an electric heating sterilization module disposed between the heat exchanger and the air intake filter screen.
The control method of the air conditioner indoor unit according to the embodiment of the invention comprises the following steps:
detecting whether a sterilization mode starting signal is received or not;
if so, entering a sterilization mode, starting the electric heating sterilization module, controlling the fan to rotate, guiding the airflow passing through the electric heating sterilization module to one of the heat exchanger and the air inlet filter screen so as to sterilize the one of the heat exchanger and the air inlet filter screen, and then reversing the air supply direction, guiding the airflow passing through the electric heating sterilization module to the other one of the heat exchanger and the air inlet filter screen so as to sterilize the other one of the heat exchanger and the air inlet filter screen.
For example, the electric heating sterilization module may be made of a foam material with an electric heating effect, for example, a foam material with an electric heating effect made of nickel metal, and compared with heating by using a resistance wire or an electric heating pipe, the electric heating sterilization module in the embodiment of the present invention occupies a smaller space, is light in weight, and has a smaller influence on the air volume of the indoor unit of the air conditioner. In addition, when the fan rotates forwards, the air flow is guided to the heat exchanger, and when the fan rotates backwards, the air flow is guided to the air inlet filter screen.
And the reverse air supply direction can be realized by changing the rotation direction of the fan, adjusting the air channel state in the air conditioner indoor unit, and changing the rotation direction of the fan and adjusting the air channel state in the air conditioner indoor unit.
According to the control method of the air conditioner indoor unit, the air conditioner indoor unit comprises the heat exchanger, the air inlet filter screen and the electric heating sterilization module arranged between the heat exchanger and the air inlet filter screen, wherein the electric heating sterilization module is an independent electric component, when the electric heating sterilization module needs to be operated to sterilize and disinfect the heat exchanger and the air inlet filter screen, the electric heating sterilization module can be electrified, the temperature of the electric heating sterilization module rises after the electric heating sterilization module is electrified, and then the heat exchanger and the filter screen can be sterilized through the generated high temperature. Moreover, the electric heating sterilization module is arranged between the heat exchanger and the air inlet filter screen, and the electric heating sterilization module is closer to the heat exchanger and the air inlet filter screen, so that the electric heating sterilization module is ensured to have a better sterilization effect on the heat exchanger and the air inlet filter screen.
In addition, the control method comprises the steps of detecting whether a sterilization mode starting signal is received or not, if so, entering a sterilization mode, and starting the electric heating sterilization module, wherein the sterilization mode starting signal can be sent out through manual control, or setting an interval time in advance in an air conditioner indoor unit, ending timing in a one-time sterilization mode, and when the running time of the air conditioner indoor unit reaches the interval time, sending out the sterilization mode starting signal to enter the sterilization mode to sterilize and disinfect the heat exchanger and the air inlet filter screen, so that the cleanness of the heat exchanger and the air inlet filter screen is ensured, and the air outlet quality of the air conditioner indoor unit is kept high.
Specifically, after the electric heating sterilization module is started, the electric heating sterilization module heats and rises, the fan is controlled to rotate to drive airflow to flow, high-temperature airflow passing through the electric heating sterilization module is guided to one of the heat exchanger and the air inlet filter screen, high-temperature sterilization is carried out on one of the heat exchanger and the air inlet filter screen, then the fan is controlled to change the rotation direction, the airflow passing through the electric heating sterilization module is guided to the other one of the heat exchanger and the air inlet filter screen, and sterilization is carried out on the other one of the heat exchanger and the air inlet filter screen. Wherein, the order of disinfecting of heat exchanger and air inlet filter screen can be changed, for example disinfect to the heat exchanger through fan control high temperature distinguished and admirable earlier, disinfect to the air inlet filter screen again, perhaps carry out pasteurization earlier to the air inlet filter screen and carry out pasteurization again to the heat exchanger.
It should be noted that, when the fan controls the high-temperature air flow to sterilize one of the heat exchanger and the air inlet filter screen, the other of the heat exchanger and the air inlet filter screen is less affected by the high temperature of the electric heating sterilization module. Like this, on the one hand the electrical heating sterilization module can carry out pasteurization alone to heat exchanger and air inlet filter screen, guarantees the bactericidal effect, and on the other hand can also avoid heat exchanger or air inlet filter screen to receive the high temperature heat-up time overlength, and then avoids heat exchanger or filter screen to damage long service life.
Therefore, the control method of the air conditioner indoor unit provided by the embodiment of the invention can be used for sequentially sterilizing the heat exchanger and the air inlet filter screen, and has the advantages of good sterilization effect, long service life and the like.
According to some embodiments of the present invention, as shown in fig. 1 and 2, when the heat exchanger is sterilized, control stops sterilizing the heat exchanger if one of the following conditions is satisfied:
the current temperature T6 of the heat exchanger is higher than a first preset temperature T1, and the first preset temperature T1 is higher than the preset working temperature T of the electric heating sterilization module;
the heat exchanger sterilization time t4 reaches a first preset time t 1.
It should be noted that, by keeping the electrical heating sterilization module at the preset operating temperature T, the current temperature T6 of the heat exchanger can be kept near the preset operating temperature T, and the preset operating temperature T can play a sterilization and disinfection effect on the heat exchanger, but the electrical heating sterilization module continuously heats the heat exchanger, which may also result in the current temperature T6 of the heat exchanger being higher than the preset operating temperature T, and even reaching the first preset temperature T1.
It can be understood that, by setting the first preset temperature T1, the temperature of the heat exchanger can be prevented from being too high while the heat exchanger can be sterilized and disinfected, so that the heat exchanger can be protected from being damaged due to high temperature. Alternatively, the temperature of the heat exchanger is always kept below the first preset temperature T1, but the heating of the heat exchanger is stopped when the sterilization time of the heat exchanger reaches the first preset time T1. The heating time of the heat exchanger reaches the first preset time T1 at the preset working temperature T, so that the heat exchanger can be fully sterilized. The heating sterilization time of the heat exchanger is limited doubly through two conditions of the first preset temperature T1 and the first preset time T1, so that the sterilization effect of the heat exchanger can be guaranteed, the phenomenon that the heating temperature of the heat exchanger is too high or the heating time is too long can be avoided, and the damage of the heat exchanger is avoided.
In addition, no matter the temperature of the heat exchanger reaches the first preset temperature T1 firstly, or the sterilization time T4 of the heat exchanger reaches the first preset time T1 firstly, the sterilization effect of the heat exchanger can be ensured by meeting one of the two conditions, and the heat exchanger can be protected from being damaged.
Specifically, the preset working temperature T of the electric heating sterilization module is 60 ℃ to 90 ℃, for example, 85 ℃, so that the sterilization effect of the temperature of the electric heating sterilization module on bacteria, mold, viruses and the like on the heat exchanger can be ensured. The first preset temperature T1 is not higher than 100 c, for example 90 c, which makes it possible to avoid the heat exchanger from being damaged. The first preset time t1 is 5min to 40min, for example 20min or 30min, so that the heat exchanger can be sufficiently sterilized, and meanwhile, the waste of power and heat caused by long-term heating can be avoided.
According to some embodiments of the present invention, as shown in fig. 1 and 2, when the intake screen is sterilized, the sterilization of the intake screen is stopped when one of the following conditions is satisfied:
the current temperature T7 of the air inlet filter screen is higher than a second preset temperature T2, and the second preset temperature T2 is higher than the preset working temperature T of the electric heating sterilization module;
the sterilizing time t5 of the air inlet filter screen reaches a second preset time t 2.
It should be noted that, by keeping the electric heating sterilization module at the preset working temperature T, the current temperature T7 of the air intake filter screen can be kept near the preset working temperature T, and the preset working temperature T can play the sterilization and disinfection effects on the air intake filter screen, but the air intake filter screen is continuously heated by the electric heating sterilization module, so that the current temperature T7 of the air intake filter screen can be higher than the preset working temperature T, and even the second preset temperature T2 is reached.
It can be understood that, through setting for second preset temperature T2, when guaranteeing that the air inlet filter screen can be disinfected by the disinfection, can avoid the high temperature of air inlet filter screen to the protection air inlet filter screen can not receive the damage because of high temperature. Or, the temperature of the air inlet filter screen is always kept below the second preset temperature T2, but the sterilization time of the air inlet filter screen reaches the second preset time T2, the sterilization of the air inlet filter screen is stopped at the moment, the air inlet filter screen is heated to reach the second preset time T2 at the preset working temperature T, and the sufficient sterilization and disinfection of the air inlet filter screen can be ensured. The heating sterilization time of the air inlet filter screen is limited doubly through two conditions of the second preset temperature T2 and the second preset time T2, so that the sterilization effect of the air inlet filter screen can be guaranteed, and the conditions that the air inlet filter screen is deformed, falls off or is staggered to cause noise due to overhigh heating temperature or overlong heating time of the air inlet filter screen can be avoided.
In addition, no matter the temperature of the air inlet filter screen reaches the second preset temperature T2 firstly, or the sterilization time T5 of the air inlet filter screen reaches the second preset time T2 firstly, the sterilization effect of the air inlet filter screen can be ensured by reaching one of the two conditions, and the air inlet filter screen can be protected from being damaged easily.
Specifically, the preset working temperature T of the electric heating sterilization module is 60-90 ℃, for example, 85 ℃, so that the sterilization effect of the temperature of the electric heating sterilization module on bacteria, mold, viruses and the like on the air inlet filter screen can be ensured. The second preset temperature T2 is not higher than 100 ℃, for example 90 ℃, so that the damage of the air inlet filter screen can be avoided. The second preset time t2 is 5min to 30min, for example 20min or 25min, so that when the air inlet filter screen is sufficiently sterilized, waste of power and heat caused by long-term heating can be avoided.
According to some embodiments of the invention, in the sterilization mode, the fan is operated at the lowest wind speed.
It can be understood that the fan operates at the lowest wind speed, and the hot air heated by the electric heating sterilization module can be driven to move towards the heat exchanger or the air inlet filter screen, so that the sterilization effect of the hot air on the heat exchanger and the air inlet filter screen is improved, the hot air moving speed can be avoided too fast, the hot air can be fully subjected to heat exchange with the heat exchanger or the air inlet filter screen, and the low energy consumption and low noise can be ensured.
According to some embodiments of the present invention, as shown in fig. 1 and 2, it is detected whether a condition for exiting the sterilization mode is satisfied in the sterilization mode;
if so, the heating sterilization module is closed, and the rotating speed of the fan is increased.
Wherein, after closing the heating module, utilize the fan to rotate the process of loosing the heat on air inlet filter screen, the electrical heating sterilization module and the heat exchanger and be the cooling stage.
It should be noted that, when the heat exchanger is sterilized first and then the intake air filter screen is sterilized, the condition for exiting the sterilization mode is one of the following conditions: the current temperature T7 of the intake air screen is higher than the second preset temperature T2, or the sterilization time T5 of the intake air screen reaches the second preset time T2. When the air inlet filter screen is sterilized firstly and then the heat exchanger is sterilized, the condition of exiting the sterilization mode is one of the following conditions: the current temperature T6 of the heat exchanger is higher than the first preset temperature T1, or the sterilization time T4 of the heat exchanger reaches the first preset time T1.
For example, after heat exchanger and air inlet filter screen disinfect and accomplish, the electric heating sterilization module stops the heating, and the fan rotational speed can be adjusted to the well grade wind speed this moment, and the fan can blow towards indoor. The fan rotates with the medium-grade wind speed, can avoid the wind speed too fast and blow to indoor and lead to indoor temperature short time to rise fast on the one hand, make the filter screen, the heat on electrical heating sterilization module and the heat exchanger slowly dispels, guarantee indoor temperature's stability and user's comfort, on the other hand can avoid the wind speed too slow and lead to the filter screen, the heat on electrical heating sterilization module or the heat exchanger dispels too slowly, and then shortens the time of cooling stage. In addition, the fan rotates at a medium wind speed, the influence on a user due to the fact that generated noise is too large can be prevented, and the comfort of the indoor environment is further improved.
According to some embodiments of the present invention, as shown in fig. 1 and fig. 2, after the rotation speed of the fan is increased, the fan is controlled to stop when one of the following conditions is satisfied:
the temperature T6 of the heat exchanger is lower than a third preset temperature T3, the temperature T7 of the filter screen is lower than a fourth preset temperature T4, and the temperature T8 of the electric heating sterilization module is lower than a fifth preset temperature T5;
the running time t6 after the fan speed is increased reaches a third preset time t 3.
In other words, when the temperature T6 of the heat exchanger, the temperature T7 of the intake air filter screen and the temperature T8 of the heat sterilization module simultaneously drop below the preset temperature, it can be ensured that the waste heat of the heat exchanger, the intake air filter screen and the heat sterilization module is dissipated, and the cooling stage is completed, so as to prevent the heat exchanger, the intake air filter screen and the heat sterilization module from being damaged due to continuous overheating. Or after the fan operates at the medium-speed wind speed for the third preset time T3, the fan is turned off, and the cooling stage is completed, wherein the fan operates at the cooling stage for the third preset time T3, and the third preset time T3 can ensure that the temperature T8 of the heat exchanger, the air inlet filter screen and the heating and sterilizing module can be reduced to be close to the preset temperature, and can avoid power waste caused by long-time operation of the fan.
Specifically, the third preset temperature T3, the fourth preset temperature T4 and the fifth preset temperature T5 are not higher than 25 ℃, for example, 25 ℃, wherein the third preset temperature T3, the fourth preset temperature T4 and the fifth preset temperature T5 may all be indoor temperatures. So, can guarantee that heat exchanger, air inlet filter screen and heat sterilization module are fully cooled off, avoid heat exchanger, air inlet filter screen and heat sterilization module to damage because last high temperature. The third preset time t3 is 5min to 20min, for example, 15 min. Therefore, the overlong cooling stage can be avoided, the cooling effect is ensured, and simultaneously, the energy consumption is reduced, namely, the cooling effect and the energy consumption are considered.
According to some embodiments of the present invention, as shown in fig. 1 and 2, after entering the sterilization mode, the compressor is controlled to stop, and at this time, the air conditioner only starts the air supply mode, so as to ensure that the hot air heated by the electric heating sterilization module can flow to the heat exchanger and the air inlet filter screen. Because the operation of electrical heating sterilization module is not restricted by the operating power of compressor, consequently heating temperature can be higher, the bactericidal effect is better, can not additionally increase the service load of compressor when disinfecting for heat exchanger and air inlet filter screen moreover, can prolong the life-span of compressor.
Other configurations and operations of the control method of the indoor unit of the air conditioner according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
An air conditioner including the air conditioning indoor unit of the present application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The control method of the air conditioner indoor unit is characterized in that the air conditioner indoor unit comprises a heat exchanger, an air inlet filter screen and an electric heating sterilization module arranged between the heat exchanger and the air inlet filter screen, and the control method comprises the following steps:
detecting whether a sterilization mode starting signal is received or not;
if the air flow passes through the electric heating sterilization module, the electric heating sterilization module is started, the fan is controlled to rotate, the air flow passing through the electric heating sterilization module is guided to one of the heat exchanger and the air inlet filter screen so as to sterilize the one of the heat exchanger and the air inlet filter screen, and then the air flow passing through the electric heating sterilization module is guided to the other one of the heat exchanger and the air inlet filter screen by reversing the air supply direction so as to sterilize the other one of the heat exchanger and the air inlet filter screen.
2. The control method of an indoor unit of an air conditioner according to claim 2, wherein when the heat exchanger is sterilized, the sterilization of the heat exchanger is controlled to be stopped if one of the following conditions is satisfied:
the current temperature of the heat exchanger is higher than a first preset temperature, and the first preset temperature is higher than the preset working temperature of the electric heating sterilization module;
and the sterilization time of the heat exchanger reaches a first preset time.
3. The method for controlling the indoor unit of the air conditioner according to claim 2, wherein the preset working temperature of the electric heating sterilization module is 60-90 ℃;
the first preset temperature is not higher than 100 ℃;
the first preset time is 5-40 min.
4. The control method of an indoor unit of an air conditioner according to claim 2, wherein when the air intake screen is sterilized, the sterilization of the air intake screen is stopped if one of the following conditions is satisfied:
the current temperature of the air inlet filter screen is higher than a second preset temperature, and the second preset temperature is higher than the preset working temperature of the electric heating sterilization module;
and the sterilization time of the air inlet filter screen reaches a second preset time.
5. The control method of the indoor unit of the air conditioner as claimed in claim 4, wherein the preset working temperature of the electric heating sterilization module is 60-90 ℃;
the second preset temperature is not higher than 100 ℃;
the second preset time is 5 min-30 min.
6. The method as claimed in claim 1, wherein the blower is operated at a lowest wind speed in the sterilization mode.
7. The control method of an indoor unit of an air conditioner according to any one of claims 1 to 6, characterized by detecting whether a condition for exiting the sterilization mode is satisfied in the sterilization mode;
if yes, the heating sterilization module is closed, and the rotating speed of the fan is increased.
8. The method for controlling an indoor unit of an air conditioner according to claim 7, wherein the fan is controlled to stop when one of the following conditions is satisfied after the rotation speed of the fan is increased:
the temperature of the heat exchanger is lower than a third preset temperature, the temperature of the air inlet filter screen is lower than a fourth preset temperature, and the temperature of the electric heating sterilization module is lower than a fifth preset temperature;
and the running time of the fan after the rotating speed is increased reaches a third preset time.
9. The method for controlling an indoor unit of an air conditioner according to claim 8, wherein the third preset temperature, the fourth preset temperature and the fifth preset temperature are not higher than 25 ℃;
the third preset time is 5 min-20 min.
10. The method as claimed in claim 1, wherein the compressor is controlled to stop after entering the sterilization mode.
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