CN111692723A - Control method of air conditioner - Google Patents

Control method of air conditioner Download PDF

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Publication number
CN111692723A
CN111692723A CN202010496224.1A CN202010496224A CN111692723A CN 111692723 A CN111692723 A CN 111692723A CN 202010496224 A CN202010496224 A CN 202010496224A CN 111692723 A CN111692723 A CN 111692723A
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China
Prior art keywords
temperature
air conditioner
heat exchanger
range
indoor heat
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CN202010496224.1A
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Chinese (zh)
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CN111692723B (en
Inventor
徐振坤
席战利
黄招彬
张武军
黄剑云
唐亚林
李玉
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Publication of CN111692723A publication Critical patent/CN111692723A/en
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Publication of CN111692723B publication Critical patent/CN111692723B/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • 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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Abstract

The invention discloses a control method of an air conditioner, which comprises a high-temperature sterilization mode, wherein the high-temperature sterilization mode comprises the following steps: and acquiring the temperature T2 of the indoor heat exchanger, and adjusting the temperature T2 of the indoor heat exchanger to be within a preset range. And judging whether the temperature T2 of the indoor heat exchanger reaches a preset temperature T2b, and if the temperature T2 of the indoor heat exchanger reaches the preset temperature T2b, raising the air supply direction to prevent scalding. According to the control method of the air conditioner, high-temperature sterilization can be performed, and the air supply direction can be raised to prevent scalding.

Description

Control method of air conditioner
Technical Field
The invention relates to the technical field of air conditioning, in particular to a control method of an air conditioner.
Background
Many bacteria and viruses are not resistant to high temperature, and there are data showing that some bacteria harmful to human body can be killed and most viruses can be inactivated at high temperature (for example, above 56 ℃) for a certain time. The indoor heat exchanger is the high temperature state when the air conditioner is from heating, but when needing to carry out pasteurization, high temperature probably is sent to indoor through indoor fan, leads to high temperature wind to blow the people, leads to scalding easily or influences the travelling comfort.
Disclosure of Invention
An object of the present invention is to provide a control method of an air conditioner, which can perform high temperature sterilization and can raise the air supply direction to prevent scalding.
According to the control method of the air conditioner of the embodiment of the invention, the control method comprises a high-temperature sterilization mode, and the high-temperature sterilization mode comprises the following steps: and acquiring the temperature T2 of the indoor heat exchanger, and adjusting the temperature T2 of the indoor heat exchanger to be within a preset range. And judging whether the temperature T2 of the indoor heat exchanger reaches a preset temperature T2b, and if the temperature T2 of the indoor heat exchanger reaches the preset temperature T2b, raising the air supply direction to prevent scalding.
According to the control method of the air conditioner, high-temperature sterilization can be performed, and the air supply direction can be raised to prevent scalding.
In addition, the control method of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments, the pasteurization mode includes: and determining the air guide angle alpha of the air conditioner according to the temperature T2 of the indoor heat exchanger, the preset temperature T2b, the maximum air guide angle alpha max capable of being raised of the air conditioner and the initial air guide angle alpha min of the air conditioner.
In some embodiments, the pasteurization mode includes: dividing the space between the preset temperature T2b and the protection temperature T2p of the indoor heat exchanger into a plurality of temperature sections, dividing the space between the maximum air guide angle alpha max and the initial air guide angle alpha min into a plurality of sections corresponding to the plurality of temperature sections, and determining the air guide angle alpha according to the temperature section where the temperature T2 of the indoor heat exchanger is located.
In some embodiments, if the indoor heat exchanger temperature T2 reaches the preset temperature T2b, the air guiding angle α is not lower than an initial air guiding angle α min.
In some embodiments, if the indoor heat exchanger temperature T2 is greater than the preset temperature T2b, the indoor heat exchanger temperature T2 is higher by a predetermined value per liter by the wind deflection angle α by α u, and the wind deflection angle α is not higher than a maximum wind deflection angle α max.
In some embodiments, if the indoor heat exchanger temperature T2 is greater than the preset temperature T2b, the air guide angle α decreases by α d every time the indoor heat exchanger temperature T2 decreases by a predetermined value, and the air guide angle α is not lower than an initial air guide angle α min, where α d is in a range of 1 ° to 75 °, and α u ≧ 1.5 α d.
In some embodiments, if the temperature of the indoor heat exchanger temperature T2 rises, the wind guide angle α rises (T2-T2b) Ku, and the wind guide angle α is not greater than the maximum wind guide angle α max.
In some embodiments, if the temperature of the indoor heat exchanger temperature T2 decreases, the wind deflection angle a decreases (T2-T2b) Kd, and the wind deflection angle a is not less than the initial wind deflection angle α min,
in some embodiments, Kd is in the range of 1 to 25, and Ku.gtoreq.1.2 Kd.
In some embodiments, if the temperature of the indoor heat exchanger temperature T2 rises, the indoor heat exchanger temperature T2 rises by a predetermined value per liter by u% of the wind deflection angle α, and the wind deflection angle α is not greater than a maximum wind deflection angle α max.
In some embodiments, if the temperature of the indoor heat exchanger temperature T2 decreases, the air guide angle α decreases by d% for each predetermined value of decrease of the indoor heat exchanger temperature T2, and the air guide angle α is not less than the initial air guide angle α min,
in some embodiments, d% is in the range of 1 to 50% and u% ≧ 1.5 d%.
In some embodiments, if the temperature of the indoor heat exchanger temperature T2 increases, the wind guide angle α increases by (α max- α min) × Eu%, and the wind guide angle α is not greater than the maximum wind guide angle α max.
In some embodiments, if the temperature of the indoor heat exchanger temperature T2 decreases, the wind guide angle α decreases by (α max- α min) × Ed%, and the wind guide angle α is not less than the initial wind guide angle α min,
in some embodiments, Ed% is in the range of 1 to 50%, Eu%. gtoreq.1.5 d%.
In some embodiments, the maximum wind guiding angle α max is in a range of 75 ° to 90 ° with respect to a horizontal plane, and the initial wind guiding angle α min is in a range of-30 ° to 30 ° with respect to the horizontal plane.
In some embodiments, the initial wind guiding angle α min is a wind guiding angle before the air conditioner enters the high-temperature sterilization mode.
In some embodiments, the initial wind guiding angle α min is raised by 0 ° to 30 ° with respect to the wind guiding angle before the air conditioner enters the high-temperature sterilization mode.
In some embodiments, the initial air guiding angle α min is an air guiding angle adjusted when the air conditioner enters a high-temperature sterilization mode.
In some embodiments, the preset temperature T2b is in the range of 45 ℃ to 50 ℃.
In some embodiments, the air conditioner includes an air conditioner main body and an air guide, the air conditioner main body has an air supply opening, the air guide is rotatably disposed at the air supply opening to adjust an air supply direction of the air supply opening, and the air guide is at least one of an air guide plate or an air guide louver.
In some embodiments, the pasteurization mode includes: and when the accumulated running time of the high-temperature sterilization mode reaches a first preset time, starting to judge whether the indoor heat exchanger temperature T2 is in the preset range.
In some embodiments, the first predetermined length of time is no greater than 20 minutes.
In some embodiments, the method of pasteurization further comprises: and acquiring the outdoor environment temperature, and determining the first preset time according to the outdoor environment temperature.
In some embodiments, the first predetermined length of time is in the range of 8 minutes to 20 minutes if the outdoor ambient temperature is no greater than 5 ℃.
In some embodiments, the first predetermined length of time is in the range of 5 minutes to 15 minutes if the outdoor ambient temperature is greater than 5 ℃ and not greater than 15 ℃.
In some embodiments, the first predetermined length of time is in a range of 3 minutes to 10 minutes if the outdoor ambient temperature is greater than 15 ℃.
In some embodiments, the pasteurization mode includes: and when the high-temperature sterilization mode is entered, at least one of the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling element, the rotating speed of the outdoor fan, the air guide structure and the electric auxiliary heat is adjusted to increase the temperature of the indoor heat exchanger.
In some embodiments, the pasteurization mode includes: and if the duration that the indoor heat exchanger temperature T2 is lower than the lowest threshold value of the preset range is not less than a third preset time, exiting the high-temperature sterilization mode. And if the duration that the indoor heat exchanger temperature T2 is higher than the highest threshold value of the preset range is not less than a fourth preset time, exiting the high-temperature sterilization mode.
In some embodiments, the third predetermined length of time is in the range of 30 minutes to 90 minutes.
In some embodiments, the third predetermined length of time is in the range of 30 minutes to 60 minutes.
In some embodiments, the fourth predetermined length of time is in the range of 10 minutes to 60 minutes.
In some embodiments, the fourth predetermined length of time is in the range of 30 minutes to 45 minutes.
In some embodiments, the difference between the highest threshold and the lowest threshold of the preset range is not less than 0.2 ℃.
In some embodiments, the difference between the highest threshold and the lowest threshold of the preset range is in the range of 1 ℃ to 3 ℃.
In some embodiments, the lowest threshold of the preset range is in the range of 56 ℃ to 96 ℃.
In some embodiments, the preset range has a highest threshold in a range of 56 ℃ to 96 ℃.
In some embodiments, the preset range is determined according to a refrigerant type of the air conditioner.
In some embodiments, the refrigerant is R22, and the lowest threshold of the predetermined range is within a range from 56 ℃ to 70 ℃.
In some embodiments, the refrigerant is R410A, and the lowest threshold of the predetermined range is within a range from 56 ℃ to 62 ℃.
In some embodiments, the refrigerant is R32, and the lowest threshold of the predetermined range is within a range from 56 ℃ to 62 ℃.
In some embodiments, the refrigerant is R290, and the lowest threshold of the preset range is in a range from 56 ℃ to 94 ℃.
In some embodiments, the refrigerant is R22, and the maximum threshold of the preset range is within a range from 56 ℃ to 72 ℃.
In some embodiments, the refrigerant is R410A, and the maximum threshold of the preset range is within a range from 56 ℃ to 64 ℃.
In some embodiments, the refrigerant is R32, and the maximum threshold of the preset range is within a range from 56 ℃ to 64 ℃.
In some embodiments, the refrigerant is R290, and the maximum threshold of the preset range is in a range from 56 ℃ to 96 ℃.
In some embodiments, the method of pasteurization further comprises: and recording the duration time of the high-temperature sterilization mode when the high-temperature sterilization mode is entered, and exiting the high-temperature sterilization mode if the duration time reaches a fifth preset time.
In some embodiments, the fifth predetermined period of time is not less than 10 minutes.
In some embodiments, the fifth predetermined length of time is in the range of 35 minutes to 130 minutes.
In some embodiments, the method of pasteurization further comprises: and acquiring the outdoor environment temperature, and determining the fifth preset time according to the outdoor environment temperature.
In some embodiments, the fifth predetermined length of time is in the range of 50 minutes to 90 minutes if the outdoor ambient temperature is not greater than 5 ℃.
In some embodiments, the fifth predetermined length of time is in the range of 40 minutes to 70 minutes if the outdoor ambient temperature is greater than 5 ℃ and not greater than 15 ℃.
In some embodiments, the fifth predetermined length of time is in a range of 35 minutes to 50 minutes if the outdoor ambient temperature is greater than 15 ℃.
In some embodiments, when the temperature of the indoor heat exchanger reaches the protection temperature T2p, the compressor is shut down.
In some embodiments, the compressor is started if the indoor heat exchanger temperature decreases to the recovery temperature T2 s.
In some embodiments, the pasteurization mode is exited if the number of compressor shutdowns reaches a predetermined number.
In some embodiments, the compressor is started if the compressor has been shut down once for a sixth predetermined period of time.
In some embodiments, the predetermined number of times is not less than 0.
In some embodiments, the predetermined number of times is in the range of 3 to 30.
In some embodiments, the sixth predetermined period of time is in the range of 0 to 30 minutes.
In some embodiments, the sixth predetermined period of time is in the range of 3 to 5 minutes.
In some embodiments, the recovery temperature T2s is no greater than 48 ℃.
In some embodiments, the protection temperature T2p of the indoor heat exchanger is determined according to the refrigerant type of the air conditioner.
In some embodiments, the refrigerant R22 is R2 p, and the protection temperature is in a range of 68 ℃ to 73 ℃.
In some embodiments, the refrigerant R410A is the protection temperature T2p within a range of 62 ℃ to 66 ℃.
In some embodiments, the refrigerant R32 is R2 p, and the protection temperature is in a range of 62 ℃ to 66 ℃.
In some embodiments, the cooling medium is R290, and the protection temperature T2p is in a range from 90 ℃ to 96 ℃.
In some embodiments, the high-temperature sterilization mode further includes initializing an air conditioner when the high-temperature sterilization mode is entered.
In some embodiments, the initialization process comprises: initializing an indoor fan rotating speed R0 according to the indoor temperature T1, and positively correlating the indoor fan initial rotating speed R0 with the indoor temperature or setting the indoor fan initial rotating speed R0 to be a low-grade wind speed.
In some embodiments, the initialization process comprises: the outdoor fan rotating speed is initialized according to the outdoor temperature T4, and the outdoor fan initial rotating speed W0 is inversely related to the outdoor temperature T4.
In some embodiments, the initialization process comprises: the compressor frequency is initialized according to the outdoor temperature T4, and the compressor initial frequency F0 is inversely related to the outdoor temperature T4.
In some embodiments, the initialization process comprises: the throttle element opening degree is initialized according to the outdoor temperature T4, and the throttle element initial opening degree P0 is positively correlated with the outdoor temperature T4.
In some embodiments, the initialization process comprises: initializing the air guide angle of the air conditioner to a sterilization angle.
Drawings
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Fig. 4 is a schematic view illustrating a control angle of a wind guide of an air conditioner according to some embodiments of the present invention, wherein the air conditioner is a split wall type air conditioner;
fig. 5 is a schematic view illustrating a control angle of an air guide of an air conditioner according to another embodiment of the present invention, wherein the air conditioner is a split floor type air conditioner.
Fig. 6 is a schematic diagram of the outdoor ambient temperature of the air conditioner according to the embodiment of the present invention corresponding to the first predetermined period of time and the fifth predetermined period of time.
Fig. 7 is a schematic diagram illustrating a corresponding relationship between an indoor fan initial rotation speed R0 and an indoor temperature T1 in a high-temperature sterilization mode according to an embodiment.
Fig. 8 is a schematic diagram illustrating a corresponding relationship between an initial rotation speed W0 of the outdoor fan and an outdoor temperature T4 in a high-temperature sterilization mode according to an embodiment.
Fig. 9 is a schematic diagram illustrating the correspondence relationship between the initial frequency F0 of the compressor and the outdoor temperature T4 in the high-temperature sterilization mode according to an embodiment.
Fig. 10 is a schematic diagram illustrating the correspondence relationship between the initial opening P0 of the throttling element and the outdoor temperature T4 in the high-temperature sterilization mode according to an embodiment.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, according to the control method of the air conditioner of the embodiment of the present invention, the control method includes a high temperature sterilization mode, and when the air conditioner operates in the high temperature sterilization mode, the temperature of the indoor heat exchanger can be increased by controlling the temperature of the indoor heat exchanger, so that bacteria attached to the indoor heat exchanger can be killed, and the purpose of high temperature sterilization can be achieved.
The high-temperature sterilization mode comprises the following steps: the temperature T2 of the indoor heat exchanger is obtained, the temperature T2 of the indoor heat exchanger is adjusted to be within a preset range, and the temperature T2 of the indoor heat exchanger is maintained within the preset range within a certain time range, so that the aim of sterilization can be fulfilled. However, in the sterilization process, the air conditioner still needs to supply air outwards, otherwise, the air flow is not circulated, the indoor air flow cannot be guided to the indoor heat exchanger, and the sterilization effect is reduced.
However, since the temperature T2 of the indoor heat exchanger is high, the hot air supplied to the indoor space is likely to affect the comfort of the user, and may even cause a burn. Based on the method, the invention provides methods to avoid directly blowing hot air to a user, avoid scalding and improve comfort.
Specifically, after entering the high-temperature sterilization mode, whether the indoor heat exchanger temperature T2 reaches a preset temperature T2b is determined, and if the indoor heat exchanger temperature T2 reaches the preset temperature T2b, the air supply direction is raised to prevent scalding.
According to the control method of the air conditioner, the temperature of the indoor heat exchanger can be increased, bacteria attached to the indoor heat exchanger can be killed, meanwhile, indoor circulation is continued, more bacteria can be promoted to be attached to the indoor heat exchanger, and the sterilization effect is improved. In addition, by raising the air supply direction, adverse effects on the temperature at a low position can be avoided, and high-temperature air is prevented from directly blowing to a user, so that the air supply direction can be raised to prevent scalding.
In the use, can be through the mode of directional air supply, after entering into the pasteurization mode, raise the air supply direction and maintain, avoid high-temperature wind to blow to the user, because hot-air shifts up, can avoid the indoor lower part high temperature, it is always can avoid high-temperature wind directly to blow to the user.
In addition, the present invention can also determine the air blowing direction of the indoor heat exchanger according to the indoor heat exchanger temperature T2, etc., and achieve various purposes such as sterilization, indoor temperature adjustment, scald prevention, etc.
Further, in some embodiments of the present invention, the pasteurization mode includes: and determining the air guide angle alpha of the air conditioner according to the temperature T2 of the indoor heat exchanger, the preset temperature T2b, the maximum air guide angle alpha max capable of being raised of the air conditioner and the initial air guide angle alpha min of the air conditioner. Therefore, the air guide angle and the air supply direction can be reasonably selected according to actual requirements, so that the all-round requirements of users can be met.
Optionally, the pasteurization mode includes: dividing the space between the preset temperature T2b and the protection temperature T2p of the indoor heat exchanger into a plurality of temperature sections, dividing the space between the maximum air guide angle alpha max and the initial air guide angle alpha min into a plurality of sections corresponding to the plurality of temperature sections, and determining the air guide angle alpha according to the temperature section where the temperature T2 of the indoor heat exchanger is located. In the using process, after the air conditioner obtains the temperature T2 of the indoor heat exchanger, the temperature T2 of the indoor heat exchanger is judged, the temperature section of the temperature T2 of the indoor heat exchanger is determined, then the current air guide angle alpha is obtained through table lookup or a formula and the like, and the air conditioner is controlled to blow air towards the air guide angle alpha.
Of course, the wind guiding angle α can also be determined according to other manners in the present invention.
Optionally, if the indoor heat exchanger temperature T2 reaches the preset temperature T2b, the air guide angle α is not lower than an initial air guide angle α min; if the indoor heat exchanger temperature T2 is greater than the preset temperature T2b, the indoor heat exchanger temperature T2 is higher by a preset value per liter, the wind guide angle alpha is raised by alpha u, and the wind guide angle alpha is not higher than a maximum wind guide angle alpha max.
For example, the preset temperature T2b is set to 50 ℃, wherein when the indoor heat exchanger temperature T2 is 2 ℃ higher per liter, the wind guide angle α is raised by 3 °, and if the wind guide angle α is 0 ° relative to the reference position when the indoor heat exchanger temperature T2 is T2b (i.e., 50 ℃), the wind guide angle α is raised to 3 ° relative to the reference position when the indoor heat exchanger temperature T2 is raised to 53 ℃; when the temperature T2 of the indoor heat exchanger rises to 56 ℃, the air guide angle α rises to an angle of 6 ° … … with respect to the reference position.
The reference position may be specified according to actual operating conditions, for example, the reference position is set to a horizontal plane, an air outlet direction of an air outlet of an air conditioner, or the like. In addition, the above examples are only for illustrating the technical solutions of the present application more clearly, and are not intended to limit the scope of the present invention.
In addition, in other embodiments of the present invention, when the temperature T2 of the indoor heat exchanger drops, the blowing direction will be gradually adjusted according to the temperature T2 of the indoor heat exchanger to maintain the indoor ambient temperature. Specifically, if the indoor heat exchanger temperature T2 is greater than the preset temperature T2b, the air guide angle α decreases by α d every time the indoor heat exchanger temperature T2 decreases by a predetermined value, and the air guide angle α is not lower than an initial air guide angle α min.
For example, the preset temperature T2b is set to 50 ℃, wherein the wind guiding angle α decreases by 2 ° every time the indoor heat exchanger temperature T2 decreases by 2 °, and if the wind guiding angle α is 0 ° relative to the reference position when the indoor heat exchanger temperature T2 is T2b +5 (i.e., 55 ℃), the wind guiding angle α decreases by-2 ° relative to the reference position when the indoor heat exchanger temperature T2 decreases to 53 ℃; when the temperature T2 of the indoor heat exchanger drops to 51 ℃, the air guide angle α drops to an angle of-4 ° … … with respect to the reference position.
Wherein, in some embodiments of the present invention, α d is in the range of 1 ° to 75 ° and α u ≧ 1.5 α d. For example, α d is set to 1 °, 5 °, 15 °, 20 °, 54 °, 70 °, etc., and α u may be set to 1 °, 10 °, 20 °, 54 °, 75 °, etc. Therefore, the change rate of the air guide angle alpha when the temperature of the indoor heat exchanger rises is larger than the change rate of the air supply direction when the temperature of the indoor heat exchanger falls. Like this, wind-guiding angle alpha lifting is faster when the temperature risees, like this, can improve the security of air conditioner, avoids scalding the user. And when indoor heat exchanger temperature T2 descends, indoor ambient temperature has been in suitable within range this moment, can slowly be with the air supply height this moment, not only can maintain indoor ambient temperature, moreover, can also avoid scalding the user.
Of course, α d in the present invention may be set to be less than 1 ° or more than 75 °, and α u may be set to be equal to α d or less than α d.
Optionally, in some embodiments of the present invention, if the temperature of the indoor heat exchanger temperature T2 rises, the wind guiding angle α rises (T2-T2b) Ku, and the wind guiding angle α is not greater than the maximum wind guiding angle α max.
For example, if the preset temperature T2b is set to 50 ℃ and Ku is 10, if the angle of the air guide angle α with respect to the reference position is 3 ° when the indoor heat exchanger temperature T2 is T2b (i.e., 50 ℃), then when the indoor heat exchanger temperature T2 is increased to 53 ℃, the air guide angle α is raised to 30 ° with respect to the reference position; when the temperature T2 of the indoor heat exchanger rises to 56 ℃, the air guide angle α rises to an angle of 60 ° … … with respect to the reference position.
Alternatively, with reference to fig. 2, if the temperature of the indoor heat exchanger temperature T2 decreases, the wind guide angle α decreases (T2-T2b) Kd, and the wind guide angle α is not less than the initial wind guide angle α min,
for example, if the air guide angle α is 60 ° with respect to the reference position when the indoor heat exchanger temperature T2 is 56 ℃, then when the indoor heat exchanger temperature T2 is decreased to 53 ℃, the air guide angle α is increased to 36 ° with respect to the reference position, for example, the preset temperature T2b is set to 50 ℃ and Kd is 8; when the indoor heat exchanger temperature T2 is reduced to 51 ℃, the air guide angle α is raised to an angle of 20 ° … … with respect to the reference position.
The unit of Ku and Kd may be (°/° c), that is, the calculation results of (T2-T2b) Ku and (T2-T2b) Kd are angle values of the rise or fall of the blowing direction.
Alternatively, Kd is in the range of 1 to 25, Ku.gtoreq.1.2 Kd. For example, Kd may be set to 1, 5, 15, 20, etc., while Ku may be set to 1, 10, 20, 54, 75, etc. Therefore, the change rate of the air guide angle alpha when the temperature of the indoor heat exchanger rises is larger than the change rate of the air supply direction when the temperature of the indoor heat exchanger falls. Like this, wind-guiding angle alpha lifting is faster when the temperature risees, like this, can improve the security of air conditioner, avoids scalding the user. And when indoor heat exchanger temperature T2 descends, indoor ambient temperature has been in suitable within range this moment, can slowly be with the air supply height this moment, not only can maintain indoor ambient temperature, moreover, can also avoid scalding the user.
Of course, Kd in the present invention may also be set to less than 1 or greater than 25, and Ku may be set equal to Kd or less than Kd.
In other embodiments of the present invention, if the temperature of the indoor heat exchanger temperature T2 increases, the indoor heat exchanger temperature T2 increases by a predetermined value per liter by u% of the wind guide angle α, and the wind guide angle α is not greater than the maximum wind guide angle α max.
For example, the preset temperature T2b is set to 50 ℃, wherein the wind guide angle α is raised by 10% when the indoor heat exchanger temperature T2 is raised by 2 ℃ per liter, and if the wind guide angle α is 30 ° relative to the reference position when the indoor heat exchanger temperature T2 is T2b (i.e., 50 ℃), the wind guide angle α is raised to 33 ° relative to the reference position when the indoor heat exchanger temperature T2 is raised to 52 ℃; when the indoor heat exchanger temperature T2 rises to 54 ℃, the air guide angle α rises to 36.3 ° … … relative to the reference position.
Optionally, if the temperature of the indoor heat exchanger temperature T2 decreases, the air guide angle α decreases by d% for each decrease of the indoor heat exchanger temperature T2 by a predetermined value, and the air guide angle α is not less than the initial air guide angle α min.
For example, the preset temperature T2b is set to 50 ℃, wherein the wind guiding angle α is reduced by 8% every time the indoor heat exchanger temperature T2 is reduced by 2 ℃, and if the wind guiding angle α is 60 ° relative to the reference position when the indoor heat exchanger temperature T2 is T2b +5 (i.e., 55 ℃), the wind guiding angle α is reduced to 54 ° relative to the reference position when the indoor heat exchanger temperature T2 is reduced to 54 ℃; when the indoor heat exchanger temperature T2 drops to 51 ℃, the air guide angle α drops to an angle of 48.6 ° … … with respect to the reference position.
Optionally, d is in the range of 1 to 50%, u% ≧ 1.5 d%. For example, d% is set to 1%, 5%, 15%, 20%, etc., and u% may be set to 1%, 10%, 20%, 54%, 75%, etc.
Of course, d% in the present invention may be set to less than 1 ° or more than 75 °, and u% may be set to be equal to or less than d%.
In some embodiments of the present invention, if the temperature of the indoor heat exchanger temperature T2 increases, the wind guiding angle α increases by (α max- α min) × Eu%, and the wind guiding angle α is not greater than the maximum wind guiding angle α max.
Optionally, if the temperature of the indoor heat exchanger temperature T2 decreases, the wind guide angle α decreases by (α max- α min) × Ed%, and the wind guide angle α is not less than the initial wind guide angle α min.
Optionally, Ed% is in the range of 1 to 50%, and Eu% is more than or equal to 1.5 d%. For example, Ed% is set to 1%, 5%, 15%, 20%, 54%, 70%, etc., and Eu% may be set to 1%, 10%, 20%, 54%, 75%, etc. Therefore, the change rate of the air guide angle alpha when the temperature of the indoor heat exchanger rises is larger than the change rate of the air supply direction when the temperature of the indoor heat exchanger falls. Like this, wind-guiding angle alpha lifting is faster when the temperature risees, like this, can improve the security of air conditioner, avoids scalding the user. And when indoor heat exchanger temperature T2 descends, indoor ambient temperature has been in suitable within range this moment, can slowly be with the air supply height this moment, not only can maintain indoor ambient temperature, moreover, can also avoid scalding the user.
Of course, the Ed% in the present invention may be set to be less than 1% or more than 50%, and Eu% may be set to be equal to or less than Ed%.
In some embodiments of the present invention, the maximum wind guiding angle α max is in a range of 75 ° to 90 ° with respect to a horizontal plane, and the initial wind guiding angle α min is in a range of-30 ° to 30 ° with respect to the horizontal plane.
Selecting a maximum wind guiding angle alpha max and an initial wind guiding angle alpha min according to different air conditioner types, for example, for a cabinet air conditioner, the air outlet of the air conditioner is relatively low, so that the air supply direction needs to be increased, the alpha max can be set in a range of 75-90 degrees relative to a horizontal plane, and the initial wind guiding angle alpha min is set in a range of 30-60 degrees relative to the horizontal plane; for example, in the case of a wall-mounted air conditioner, since the outlet of the air conditioner is high, the air blowing direction of the air conditioner can be appropriately suppressed low, α max can be set in a range of 75 ° to 90 ° with respect to the horizontal plane, and the initial air guide angle α min can be set in a range of-30 ° to 10 ° with respect to the horizontal plane.
Optionally, the initial air guiding angle α min is an air supply direction of the air conditioner before entering the high-temperature sterilization mode.
Optionally, the initial wind guiding angle α min is raised by 0 ° to 30 ° with respect to the air supply direction before the air conditioner enters the high-temperature sterilization mode.
Optionally, the initial air guiding angle α min is an air supply direction adjusted when the air conditioner enters a high-temperature sterilization mode.
In the actual use process of the air conditioner, the operation mode of the air conditioner needs to be determined according to different operation states of the air conditioner, for example, the air conditioner is in a heating mode and the indoor environment temperature is in a proper temperature before entering a high-temperature sterilization mode, at this time, the air conditioner does not directly blow hot air to a user when not entering the high-temperature sterilization mode, and at this time, even if the temperature T2 of the indoor heat exchanger is increased to T2b, an anti-scald effect is also formed; before the air conditioner enters the high-temperature sterilization mode, for example, the air conditioner is in the heating mode, even if the air conditioner does not have the direct blowing prevention function, the air conditioner can only raise the air supply direction by a preset angle (for example, 0-30 degrees) when entering the high-temperature sterilization mode, and hot air is prevented from being directly blown to a user, so that the scald prevention effect is formed; for example, when the air conditioner enters the high-temperature sterilization mode, the air supply direction is adjusted to raise the temperature of the indoor heat exchanger, and the initial air guide angle α min can be determined according to the air supply direction at this time.
In addition, the selection of the initial wind guiding angle α min in the present invention can also be determined in other manners, for example, according to the actual requirements of the user, the operating state of the air conditioner, the pipe pressure of the indoor heat exchanger, and the like.
It should be noted that the wind guiding angle α in the present invention is referred to as a specific reference direction, and for example, referring to fig. 4 and 5, if a vertical downward direction is taken as the reference direction, the wind guiding angle α is an angle with the reference direction. Of course, the reference direction in the present invention may be other directions, and the air guide angle α may be determined according to user requirements or design requirements, so as to determine the air supply direction.
Optionally, the preset temperature T2b is in the range of 45 ℃ to 50 ℃.
Optionally, the air conditioner includes an air conditioner main body and an air guide, the air conditioner main body has an air supply outlet, the air guide is rotatably disposed at the air supply outlet to adjust an air supply direction of the air supply outlet, and the air guide is at least one of an air deflector or an air guide louver.
Optionally, when the air conditioner enters the high-temperature sterilization mode, it takes a period of time for the temperature of the indoor heat exchanger to rise to the preset range, and at this period of time, it may not be necessary to detect whether the temperature of the indoor heat exchanger reaches the preset range. Specifically, the pasteurization mode includes: and when the accumulated running time of the high-temperature sterilization mode reaches a first preset time, starting to judge whether the indoor heat exchanger temperature T2 is in the preset range. Thus, the temperature T2 of the indoor heat exchanger can be stably increased to the preset range, and the operation stability of the air conditioner is improved.
Specifically, at the beginning of the air conditioner entering the high-temperature sterilization mode, if the temperature of the indoor heat exchanger is compared with the preset range, the temperature of the indoor heat exchanger will be lower than the lowest threshold value of the preset range, and at the moment, the air conditioner will be correspondingly adjusted to prompt the temperature of the indoor heat exchanger to be rapidly increased to the preset range, but the energy consumption of the air conditioner can be increased by the aid of the increasing process, and the pipe pressures of the indoor heat exchanger and the outdoor heat exchanger are possibly too large, so that the operation stability of the air conditioner is affected. Therefore, the invention adjusts the comparison time of the indoor heat exchanger temperature T2 and the preset range, and can effectively control the stability of the operation of the air conditioner.
Optionally, the first predetermined period of time is no greater than 20 minutes. Therefore, the indoor heat exchanger can be controlled to quickly reach the preset range, and the air conditioner is controlled to stably run.
In addition, in the operation process of the air conditioner, according to the temperature state of the outdoor environment, the operation state of the air conditioner is affected, when the outdoor environment temperature is too low, the capacity of the air conditioner needs to be correspondingly reduced (for example, the frequency of the compressor is reduced), at this time, a longer time is needed to adjust the temperature of the indoor heat exchanger to a preset range, if the time is too short, the pressure of a refrigerant in the compressor is higher as the outdoor environment temperature is lower, so that the stable operation of the air conditioner is affected, therefore, the first preset time length needs to be reasonably set according to the outdoor environment temperature, the situation that the pipe pressure is too high while the indoor environment temperature is rapidly increased, energy is saved and the like is avoided, and the operation stability of the air conditioner is improved.
Optionally, the method of pasteurization further comprises: and acquiring the outdoor environment temperature, and determining the first preset time according to the outdoor environment temperature.
Optionally, if the outdoor ambient temperature is not greater than 5 ℃, the first predetermined length of time is in a range of 8 minutes to 20 minutes.
Optionally, the first predetermined length of time is in a range of 5 minutes to 15 minutes if the outdoor ambient temperature is greater than 5 ℃ and not greater than 15 ℃.
Optionally, if the outdoor ambient temperature is greater than 15 ℃, the first predetermined length of time is in a range of 3 minutes to 10 minutes.
Optionally, the pasteurization mode includes: and when the high-temperature sterilization mode is entered, at least one of the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling element, the rotating speed of the outdoor fan, the air guide structure and the electric auxiliary heat is adjusted to increase the temperature of the indoor heat exchanger.
Furthermore, in the operation process, when the scheme of adjusting the temperature of the indoor heat exchanger through the air guide structure is opposite to the scheme of adjusting the air guide structure to realize scald prevention, the scheme of preventing scald is adopted to control the air guide structure, and the temperature of the indoor heat exchanger is adjusted through other modes.
Optionally, the pasteurization mode includes: and if the duration that the indoor heat exchanger temperature T2 is lower than the lowest threshold value of the preset range is not less than a third preset time, exiting the high-temperature sterilization mode. And if the duration that the indoor heat exchanger temperature T2 is higher than the highest threshold value of the preset range is not less than a fourth preset time, exiting the high-temperature sterilization mode. When the indoor heat exchanger temperature T2 fails to be within the preset range for a long time, a system failure may occur, and thus it is necessary to exit the pasteurization mode to maintain stable operation of the air conditioner.
In addition, when the indoor heat exchanger temperature T2 is lower than the lowest threshold value of the preset range for a long time, the purpose of high-temperature sterilization cannot be achieved, and therefore, the high-temperature sterilization mode can be exited to save energy.
It should be noted that, during the operation of the air conditioner, if the temperature of the indoor heat exchanger is too high, the pipe pressure of the indoor heat exchanger is too high (the system high pressure is too high), and if such a state is continued for a long time, the service life of the air conditioner is affected, and therefore, a timely shutdown process is required; when the temperature of the indoor heat exchanger is too low, the influence on the pipe pressure is small, so that the possibility that the heating time is prolonged when the temperature of the indoor heat exchanger is too low so that the temperature of the indoor heat exchanger reaches a preset range is increased, and the sterilization effect and the success rate are improved. Therefore, the third predetermined time in the present invention may be set to be greater than the fourth predetermined time.
Optionally, the third predetermined period of time is in the range of 30 minutes to 90 minutes. Further, the third predetermined period of time is in the range of 30 minutes to 60 minutes.
Optionally, the fourth predetermined period of time is in the range of 10 minutes to 60 minutes. Further, the fourth predetermined period of time is in the range of 30 minutes to 45 minutes.
Alternatively, during the high-temperature sterilization, for stable operation of the system, sterilization effect, and the like, the difference between the maximum threshold and the minimum threshold of the preset range may be set to a smaller range, for example, the difference between the maximum threshold and the minimum threshold of the preset range is not less than 0.2 ℃. Therefore, the temperature of the indoor heat exchanger can be maintained in a stable state, and the stability of the system is improved.
In addition, the difference between the highest threshold and the lowest threshold in the present invention may also be set to be less than 0.2 ℃, but since the difference is too low, the system frequently switches states, which affects the stability of the air conditioner, the difference should not be too low either.
Optionally, the difference between the highest threshold and the lowest threshold of the preset range is not less than 0.5 ℃, and further, the difference between the highest threshold and the lowest threshold of the preset range is in the range of 1 ℃ to 3 ℃.
Optionally, the lowest threshold of the preset range is in the range of 56 ℃ to 96 ℃.
Optionally, the maximum threshold of the preset range is in the range of 56 ℃ to 96 ℃.
Optionally, factors for maintaining system stability are different according to different types of refrigerants, and therefore the preset range can be determined according to the refrigerant type of the air conditioner.
Optionally, the refrigerant is R22, and the lowest threshold of the preset range is in a range from 56 ℃ to 70 ℃.
Optionally, the refrigerant is R410A, and the lowest threshold of the preset range is within a range from 56 ℃ to 62 ℃.
Optionally, the refrigerant is R32, and the lowest threshold of the preset range is within a range from 56 ℃ to 62 ℃.
Optionally, when the refrigerant is R290, the lowest threshold of the preset range is within a range from 56 ℃ to 94 ℃.
Optionally, when the refrigerant is R22, the maximum threshold of the preset range is within a range from 56 ℃ to 72 ℃.
Optionally, the refrigerant is R410A, and the maximum threshold of the preset range is within a range from 56 ℃ to 64 ℃.
Optionally, when the refrigerant is R32, the highest threshold of the preset range is within a range from 56 ℃ to 64 ℃.
Optionally, when the refrigerant is R290, the maximum threshold of the preset range is in a range from 56 ℃ to 96 ℃.
Optionally, the method of pasteurization further comprises: and recording the duration time of the high-temperature sterilization mode when the high-temperature sterilization mode is entered, and exiting the high-temperature sterilization mode if the duration time reaches a fifth preset time.
Optionally, the fifth predetermined period of time is not less than 10 minutes.
Optionally, the fifth predetermined period of time is in the range of 35 minutes to 130 minutes.
Optionally, the method of pasteurization further comprises: and acquiring the outdoor environment temperature, and determining the fifth preset time according to the outdoor environment temperature.
Optionally, if the outdoor ambient temperature is not greater than 5 ℃, the fifth predetermined period of time is in a range of 50 minutes to 90 minutes.
The fifth predetermined length of time is in the range of 40 minutes to 70 minutes if the outdoor ambient temperature is greater than 5 ℃ and not greater than 15 ℃.
The fifth predetermined period of time is in the range of 35 minutes to 50 minutes if the outdoor ambient temperature is greater than 15 ℃.
Optionally, the indoor heat exchanger has a protection temperature, and the protection temperature may be determined according to factors such as a refrigerant used by the air conditioner, an outdoor environment temperature, an indoor environment temperature, and the like, and when the temperature of the indoor unit of the air conditioner exceeds the protection temperature, the operation of the air conditioner may be adversely affected, so in the present invention, when the temperature of the indoor heat exchanger reaches the protection temperature T2p, the compressor is stopped.
Alternatively, if the indoor heat exchanger temperature is reduced to the recovery temperature T2s, the system will return to a more stable state, at which time the compressor can be started.
Alternatively, the high temperature sterilization mode is exited if the number of times of stoppage of the compressor reaches a predetermined number of times. The number of times of stopping the compressor is excessive, which may be caused by the system, may cause a system failure, or may cause the high temperature sterilization mode to be impossible in the environment due to the indoor and outdoor environments, etc., and thus, the high temperature sterilization mode may be exited at this time.
Alternatively, the compressor is started after the compressor is stopped once for a sixth predetermined time period to maintain a stable operation of the air conditioner.
Wherein the predetermined number of times is not less than 0. Further, the predetermined number of times is in a range of 3 to 30.
Optionally, the sixth predetermined period of time is in the range of 0 to 30 minutes. Further, the sixth predetermined period of time is in the range of 3 to 5 minutes.
Optionally, the recovery temperature T2s is not greater than 48 ℃.
Optionally, the protection temperature T2p of the indoor heat exchanger is determined according to a refrigerant type of the air conditioner.
For example, if the refrigerant is R22, the protection temperature T2p is in the range of 68 ℃ to 73 ℃.
For example, if the refrigerant is R410A, the protection temperature T2p is in the range of 62 ℃ to 66 ℃.
For example, if the refrigerant is R32, the protection temperature T2p is in the range of 62 ℃ to 66 ℃.
For example, if the refrigerant is R290, the protection temperature T2p is in the range of 90 ℃ to 96 ℃.
The high-temperature sterilization mode of the present invention may further include: controlling the air conditioner to enter a high-temperature sterilization mode, and entering the high-temperature sterilization mode after the air conditioner receives a corresponding instruction; for example, a high-temperature sterilization button is arranged on a remote controller matched with the air conditioner, and when a user triggers the high-temperature sterilization button, a control module on the air conditioner receives a corresponding instruction and then controls the air conditioner to enter a high-temperature sterilization mode.
After the air conditioner enters a high-temperature sterilization mode, controlling the air conditioner to perform heating operation, if the air conditioner performs heating operation before, keeping the heating operation, and if the air conditioner performs cooling operation or other non-heating operation before, controlling the air conditioner to perform heating operation;
judging whether the air conditioner operates for a first preset time in a heating state;
if the air conditioner does not run for the first preset time period in the heating state, judging whether the temperature T2 of the indoor heat exchanger (namely the current temperature of the indoor heat exchanger, in other words, the real-time temperature of the indoor heat exchange gas) is greater than or equal to a third sterilization temperature TM, if the temperature T2 of the indoor heat exchanger is greater than or equal to the third sterilization temperature TM, at least one of increasing the rotating speed of an indoor fan, reducing the frequency of a compressor and increasing the opening degree of a throttling device is carried out, so that the temperature of the indoor heat exchanger is reduced, the temperature rising speed of the indoor heat exchanger is controlled, and if the temperature T2 of the indoor heat exchanger is less than the third sterilization temperature TM, whether the air conditioner runs for the first preset time period in the heating state is continuously;
or if the air conditioner does not run for the first preset time period in the heating state, judging whether the temperature change rate of the indoor heat exchanger is greater than or equal to a set change rate K, if the temperature change rate of the indoor heat exchanger is greater than or equal to the set change rate K, at least one of increasing the rotating speed of the indoor fan, reducing the frequency of the compressor and increasing the opening degree of the throttling device is carried out to reduce the temperature change rate of the indoor heat exchanger, control the temperature rising speed of the indoor heat exchanger, and if the temperature change rate of the indoor heat exchanger is smaller than the set change rate K, continuously judging whether the air conditioner runs for the first preset time period in the heating state.
The "at least one of increasing the rotation speed of the indoor fan, decreasing the frequency of the compressor, and increasing the throttle device" may be one of the adjustments, or two or three of the adjustments. When at least two of the rotating speed of the indoor fan, the frequency of the compressor and the throttling device are adjusted, the at least two parameters can be adjusted simultaneously or sequentially. By adopting at least one of the aspects of increasing the rotating speed of the indoor fan, reducing the frequency of the compressor and increasing the opening degree of the throttling device, the temperature of the indoor heat exchanger can be reduced or the temperature change rate of the indoor heat exchanger can be reduced, and the temperature rising speed of the indoor heat exchanger can be controlled.
Therefore, the relation between the preposed heating operation time (namely the first preset time length) and the temperature of the indoor heat exchanger or the temperature change rate of the indoor heat exchanger is detected and judged before the temperature (namely the real-time temperature) of the indoor heat exchanger is judged to be lower than the first sterilization temperature, if the temperature of the indoor heat exchanger is higher or the temperature change rate of the indoor heat exchanger is faster, the temperature of the indoor heat exchanger is reduced or the temperature change rate of the indoor heat exchanger is reduced by adjusting at least one of the rotating speed of an indoor fan, the frequency of a compressor and a throttling device, the high-temperature high-pressure rapid jump stop and the low-frequency liquid return of the compressor can be avoided through buffer control, and the stability of the operation of the system is ensured.
It should be noted that, after the air conditioner operates in the heating state for the first predetermined time period, it is determined whether the indoor heat exchanger temperature T2 is lower than the first sterilization temperature TL (i.e. the lowest threshold of the preset range). The first predetermined time period is an operation time of the air conditioner in a heating state before determining whether the indoor heat exchanger temperature T2 is lower than the first sterilization temperature TL. If the air conditioner is in a non-heating state (such as a cooling state) before entering the high-temperature sterilization mode or is just started before entering the high-temperature sterilization mode, the first preset time period starts to be timed when the air conditioner is adjusted to be in the heating state after entering the high-temperature sterilization mode. If the air conditioner is in a heating state before entering the high-temperature sterilization mode, the first preset time period is counted from the heating operation before the air conditioner enters the high-temperature sterilization mode. For example, if the time of the heating operation is not less than the first predetermined time period before the air conditioner enters the high-temperature sterilization mode, after the air conditioner enters the high-temperature sterilization mode, it may be determined whether the indoor heat exchanger temperature T2 is lower than the first sterilization temperature TL, or whether the indoor heat exchanger temperature T2 is lower than the first sterilization temperature TL and at the same time, whether the indoor heat exchanger temperature T2 is higher than the second sterilization temperature TH (i.e., the highest threshold of the preset range). For another example, if the time of the heating operation is less than the first predetermined time period before the air conditioner enters the high-temperature sterilization mode, after the air conditioner continues to accumulate to the first predetermined time period after entering the high-temperature sterilization mode, it is determined whether the indoor heat exchanger temperature T2 is less than the first sterilization temperature TL, or it is determined whether the indoor heat exchanger temperature T2 is less than the first sterilization temperature TL and at the same time, it is determined whether the indoor heat exchanger temperature T2 is greater than the second sterilization temperature TH.
If the air conditioner runs for a first preset time period in the heating state, whether the temperature T2 (namely the real-time temperature) of the indoor heat exchanger is lower than a first sterilization temperature is judged, and if the temperature T2 of the indoor heat exchanger is lower than the first sterilization temperature, at least one of adjusting the angle of the air guide piece to reduce the air outlet area of the air outlet, reducing the rotating speed of the indoor fan, improving the frequency of the compressor, reducing the opening degree of the throttling device, improving the rotating speed of the outdoor fan and starting electric auxiliary heat is carried out to improve the temperature of the indoor heat exchanger. Therefore, the temperature of the indoor heat exchanger can be improved through the adjusting means, so that the temperature of the indoor heat exchanger is not lower than the first sterilization temperature, and bacteria and viruses on the indoor heat exchanger can be effectively killed.
The air guide piece can be rotatably arranged at an air outlet of the air conditioner, and can open and close the air outlet. Through the rotation of air guide, can be so that air guide is located different angular position to can change the position of the relative air outlet of air guide, with the air-out area of regulation, thereby adjust the air output.
Optionally, the air guide member may be an air guide plate or an air guide louver, and a plurality of air dissipation holes may be formed in the air guide member, through which the air flow may flow out to the indoor space. For example, when the air conditioner is a split wall-mounted air conditioner, the air guide member may be an air guide plate; when the air conditioner is a split floor type air conditioner, the air guide piece can be an air guide shutter.
Optionally, the first sterilization temperature TL may have a value range of 56-94 ℃. Therefore, most of bacteria and viruses can be effectively killed, and the air conditioner can stably and reliably run in a high-temperature sterilization mode. Wherein, in the R22 refrigerant type air conditioner, the first sterilization temperature TL ranges from 56 to 70 ℃; the R410A and R32 refrigerant type air conditioners have the first sterilization temperature TL ranging from 56 to 62 ℃, and the R290 refrigerant type air conditioners have the first sterilization temperature TL ranging from 56 to 94 ℃.
Wherein, when utilizing the air guide to adjust, can be the turned angle through adjusting the air guide to the regulation of air guide to make the air guide rotate towards the direction of closing the air outlet, the area that the air outlet was sheltered from to the increase air guide, thereby can reduce the effective air-out area of air outlet, and then can reduce the air output, just also reduced the calorific loss on the indoor heat exchanger, thereby can be in the short time very fast promotion indoor heat exchanger's temperature.
It should be noted that, in the process of adjusting the air guide, no matter what angle position the air guide is in, the air outlet can have the air current to discharge to indoor, so when promoting the temperature of indoor heat exchanger, can guarantee the reliable steady operation of air conditioner, can be to indoor heat of carrying simultaneously, promote indoor temperature. For example, when no air dispersing hole is formed in the air guide, in the process of adjusting the air guide, no matter what angle position the air guide is in, the air guide does not close the air outlet, and the air guide still opens at least a part of the air outlet, so that the air flow can be discharged to the indoor from the air outlet; when the air guide piece is provided with the air dispersion holes, the air guide piece can be in an angle position for closing the air outlet in the process of adjusting the air guide piece, and at the moment, the air flow in the air conditioner is discharged to the indoor from the air dispersion holes of the air guide piece.
It can be understood that one or more of the angle of the air guide member, the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device, the rotating speed of the outdoor fan and the electric auxiliary heat can be adjusted when at least one of the angle of the air guide member, the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device is reduced, and the rotating speed of the outdoor fan and the electric auxiliary heat is started. The system pressure of the air conditioner can be increased by any adjusting means of adjusting the angle of the air guide piece to reduce the air outlet area, reduce the rotating speed of the indoor fan, increase the frequency of the compressor, reduce the opening degree of the throttling device and increase the rotating speed of the outdoor fan, and therefore the temperature of the indoor heat exchanger can be increased. The electricity is assisted hot and is opened, and electricity is assisted hot can heat the near air current of indoor heat exchanger, and the air current flows through indoor heat exchanger to can heat indoor heat exchanger, thereby can promote indoor heat exchanger's temperature.
When one of the angle of the air guide member, the rotation speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device, the rotation speed of the outdoor fan and the opening of the electric auxiliary heater is adjusted, the rotation speed of the indoor fan may be only reduced, the frequency of the compressor may be only increased, the opening degree of the throttling device may be only reduced, the rotation speed of the outdoor fan may be only increased, the electric auxiliary heater may be only opened, and the angle of the air guide member may be only adjusted to reduce the air outlet area. Of course, when the angle of the air guide member is adjusted, the rotation speed of the indoor fan is reduced, the frequency of the compressor is increased, the opening degree of the throttling device is reduced, the rotation speed of the outdoor fan is increased, and the electric auxiliary heat is turned on, the adjustment can be performed simultaneously or sequentially. For example, the rotation speed of the indoor fan can be reduced, the frequency of the compressor can be increased, and the opening degree of the throttling device can be reduced at the same time; for example, the rotation speed of the indoor fan can be sequentially reduced, the frequency of the compressor can be increased, and the opening degree of the throttling device can be reduced.
It is to be understood that the term(s) used herein refers to two or more.
The third sterilization temperature TM is set to be greater than the first sterilization temperature TL described below, and the operation efficiency and sterilization efficiency of the air conditioner in the high-temperature sterilization mode can be improved by setting the third sterilization temperature TM to be greater than the first sterilization temperature TL.
According to the sterilization control method of the air conditioner, provided by the embodiment of the invention, the preposed heating running time (namely the first preset time length) and the temperature of the indoor heat exchanger or the temperature change rate of the indoor heat exchanger are detected before the temperature (namely the real-time temperature) of the indoor heat exchanger is judged to be lower than the first sterilization temperature, if the temperature of the indoor heat exchanger is higher or the temperature change rate of the indoor heat exchanger is higher, the temperature of the indoor heat exchanger is reduced or the temperature change rate of the indoor heat exchanger is reduced by adjusting at least one of the rotating speed of an indoor fan, the frequency of a compressor and a throttling device, the temperature rising speed of the indoor heat exchanger is controlled, the high-temperature high-pressure quick jump stop and the low-frequency liquid return of the compressor can be avoided through buffer control, and the stability of the system operation is ensured. And the air conditioner runs for a first preset time period under the heating state, whether the temperature T2 of the indoor heat exchanger is lower than a first sterilization temperature is judged, if the temperature T2 of the indoor heat exchanger is lower than the first sterilization temperature, the angle of the air guide piece is adjusted to reduce the air outlet area of the air outlet, the rotating speed of the indoor fan is reduced, the frequency of the compressor is improved, the opening degree of the throttling device is reduced, at least one of the rotating speed of the outdoor fan and the opening of electric auxiliary heat is increased, the temperature of the indoor heat exchanger is not lower than the first sterilization temperature, and therefore bacterial viruses on the indoor heat exchanger can be effectively killed.
According to some embodiments of the present invention, referring to fig. 1 to 3, the high temperature sterilization mode is exited after at least one of adjusting the angle of the air guide to reduce the air outlet area of the air outlet, reducing the rotation speed of the indoor fan, increasing the frequency of the compressor, reducing the opening degree of the throttling device, increasing the rotation speed of the outdoor fan, and turning on the electric auxiliary heat is started, and the time is counted until a fifth predetermined time period.
Specifically, when at least one of adjusting the angle of the air guide member to reduce the air outlet area of the air outlet, reducing the rotating speed of the indoor fan, increasing the frequency of the compressor, reducing the opening of the throttling device, increasing the rotating speed of the outdoor fan and turning on the electric auxiliary heat reaches a set value, timing is started until a fifth preset time period, and the high-temperature sterilization mode is exited.
For example, when the electric auxiliary heater is turned on and the temperature of the electric auxiliary heater reaches the set temperature, the timer is started until the high-temperature sterilization mode is exited after a fifth preset time.
For example, after the temperature of the indoor heat exchanger is judged to be lower than the first sterilization temperature, the angle of the air guide member is adjusted to gradually reduce the air outlet area of the air outlet, therefore, the air output can be gradually reduced, the temperature of the indoor heat exchanger can be stably and gradually improved, the stability and the reliability of the operation of the air conditioner are facilitated, and particularly, after the temperature of the indoor heat exchanger is judged to be lower than the first sterilization temperature, the angle of the air guide piece is adjusted to a first set angle, when the first set angle is reached, the air conditioner can be in normal operation and air outlet, and when the air guide swings and rotates up and down, the first set angle of the air guide can be the upper air outlet limit position when the air conditioner is in normal operation (for example, refer to position a in fig. 4 and 5), and when the angle of the air guide piece is adjusted to the first set angle, timing is started until the air conditioner runs for a fifth preset time period, and then the high-temperature sterilization mode is exited. Therefore, when the angle of the air guide piece is adjusted to a first set angle, the temperature of the indoor heat exchanger is improved to a certain extent, and the air conditioner runs for a fifth preset time as a timing point, so that the running time of the air conditioner at the indoor heat exchanger at a higher temperature is conveniently calculated, meanwhile, the air conditioner continuously runs within a preset time range, the temperature of the indoor heat exchanger can be improved to be not lower than a first sterilization temperature, the sterilization time is guaranteed, and the sterilization and disinfection effects can be guaranteed. And moreover, the reliable continuous operation of the air conditioner at a higher temperature of the indoor heat exchanger is realized by controlling a plurality of parameters and judgment conditions to realize sterilization and disinfection, and the high-temperature sterilization mode is quitted after the air conditioner continuously operates for a preset time, so that the problems of compressor damage, service life of electric control components and plastic parts caused by long-term operation under severe working conditions can be reduced or avoided.
For another example, after the temperature of the indoor heat exchanger is judged to be lower than the first sterilization temperature, the rotating speed of the indoor fan is reduced, specifically, after the temperature of the indoor heat exchanger is judged to be lower than the first sterilization temperature, the rotating speed of the indoor fan is adjusted to a first set rotating speed (for example, the value range is 50-700 RPM, preferably 150-450 RPM), and when the first set rotating speed is reached, timing is started until the air conditioner operates for a fifth predetermined time, and then the high-temperature sterilization mode is exited.
Optionally, the fifth predetermined time period is longer than 10 minutes, preferably, the value range of the fifth predetermined time period is 30-130 min, for example, the value range of the fifth predetermined time period may be 100-130 min. Therefore, the sterilization and disinfection effect can be ensured, and meanwhile, the damage of the compressor caused by the long-term operation under severe working conditions, the service life of an electric control component and the deformation problem of a plastic part can be reduced or avoided.
In some embodiments of the present invention, referring to fig. 1-3, it is determined whether the indoor heat exchanger temperature T2 is higher than a second sterilization temperature TH, which is greater than a third sterilization temperature TM, while it is determined whether the indoor heat exchanger temperature T2 is lower than the first sterilization temperature TL. If the temperature T2 of the indoor heat exchanger is higher than the second sterilization temperature TH, the angle of the air guide piece is adjusted to increase the air outlet area of the air outlet, increase the rotating speed of the indoor fan, reduce the frequency of the compressor, increase the opening degree of the throttling device and reduce at least one of the rotating speed of the outdoor fan, so that the temperature of the indoor heat exchanger is reduced. Therefore, whether the temperature of the indoor heat exchanger is lower than the first sterilization temperature or not is judged, and whether the temperature of the indoor heat exchanger is higher than the second sterilization temperature or not is judged, so that the temperature of the indoor heat exchanger can be prevented from not reaching the effective sterilization temperature, meanwhile, the reduction of the reliability of the operation of the air conditioner caused by the overhigh temperature of the heat exchanger can be avoided, and the air conditioner can be ensured to operate reliably and stably in a high-temperature sterilization mode.
The temperature of the indoor heat exchanger can be reduced through the adjusting means, so that the temperature of the indoor heat exchanger is not higher than the second sterilization temperature TH and not lower than the first sterilization temperature TL, and bacteria and viruses on the indoor heat exchanger can be effectively killed.
Wherein, when adjusting through the air guide, can be the turned angle through adjusting the air guide to the regulation of air guide, so that the air guide rotates towards the direction of opening the air outlet, reduce the area that the air guide sheltered from the air outlet, so as to increase the effective air-out area of air outlet, and then can increase the air output, just also increased the calorific loss on the indoor heat exchanger, so as can be in the short time very fast reduction indoor heat exchanger's temperature, make indoor heat exchanger's temperature drop to be not higher than second sterilization temperature TH and be not less than first sterilization temperature TL. In particular, for the air conditioner having the no-wind-sensation mode, if the air guide is at the same air guide angle as the no-wind-sensation mode before the relationship between the temperature of the indoor heat exchanger and the first and second sterilization temperatures is determined, after the temperature of the indoor heat exchanger is determined to be greater than the second sterilization temperature, the angle of the air guide may be adjusted such that the angle of the air guide gradually exits the air guide angle in the no-wind-sensation mode.
When at least one of adjusting the angle of the air guide, increasing the rotating speed of the indoor fan, reducing the frequency of the compressor, increasing the opening of the throttling device and reducing the rotating speed of the outdoor fan is performed, one or more of the angles can be adjusted. The system pressure of the air conditioner can be reduced by any adjusting means of adjusting the angle of the air deflector, increasing the rotating speed of the indoor fan, reducing the frequency of the compressor, increasing the opening of the throttling device and reducing the rotating speed of the outdoor fan, so that the temperature of the indoor heat exchanger can be reduced. If it is detected that the indoor heat exchanger temperature T2 is higher than the second sterilization temperature TH, the electric auxiliary heat may be turned off if the electric auxiliary heat is turned on.
In the case of one of adjusting the angle of the air guide, increasing the rotation speed of the indoor fan, decreasing the frequency of the compressor, increasing the opening degree of the throttle device, and decreasing the rotation speed of the outdoor fan, the rotation speed of the indoor fan may be increased only by adjusting the angle of the air guide, the frequency of the compressor may be decreased only by increasing the rotation speed of the indoor fan, the opening degree of the throttle device may be increased only by decreasing the rotation speed of the outdoor fan.
When adjusting the angle of the air guide, increasing the rotation speed of the indoor fan, reducing the frequency of the compressor, increasing the opening of the throttling device, and reducing the rotation speed of the outdoor fan, the adjustment can be performed simultaneously or sequentially. For example, the rotation speed of the indoor fan can be increased, the frequency of the compressor can be reduced, and the opening degree of the throttling device can be increased at the same time; for example, the rotation speed of the indoor fan can be sequentially increased, the frequency of the compressor can be reduced, and the opening degree of the throttling device can be sequentially increased.
Optionally, the second sterilization temperature TH has a value range of 56-96 ℃. From this, through setting up the second sterilization temperature TH between 56 ~ 96 ℃, both can make indoor heat exchanger have higher temperature through the regulation to realize effectual disinfection effect of disinfecting, and can avoid indoor heat exchanger's high temperature and influence the reliability of air conditioner, improve the stability of air conditioner operation. In the R22 refrigerant type air conditioner, the value range of the second sterilization temperature TH is 56-72 ℃; the value range of the second sterilization temperature TH of the R410A and R32 refrigerant type air conditioners is 56-64 ℃; and in the R290 refrigerant type air conditioner, the value range of the second sterilization temperature TH is 56-96 ℃.
Optionally, the difference between the second sterilization temperature TH and the first sterilization temperature TL is not less than 0.5 ℃. Therefore, the difference between the second sterilization temperature and the first sterilization temperature is not less than 0.5 ℃, so that frequent adjustment fluctuation is prevented, and system stability can be accelerated. For example, the difference between the second sterilization temperature TH and the first sterilization temperature TL may be in a range of 1-3 ℃. Frequent regulation fluctuations can thus be better prevented and system stabilization can be better accelerated.
According to some embodiments of the present invention, the timing is started after at least one of adjusting the angle of the air guide to increase the air outlet area of the air outlet, increasing the rotation speed of the indoor fan, decreasing the frequency of the compressor, increasing the opening degree of the throttling device, and decreasing the rotation speed of the outdoor fan, until the air conditioner exits the high temperature sterilization mode after running for a seventh predetermined time.
Specifically, the high-temperature sterilization mode is started when at least one of the air outlet area of the air outlet is increased by adjusting the angle of the air guide piece, the rotating speed of the indoor fan is increased, the frequency of the compressor is reduced, the opening of the throttling device is increased, and the rotating speed of the outdoor fan is reduced to reach a set value, and the high-temperature sterilization mode is exited until the air conditioner runs for a seventh preset time.
For example, after the temperature of the indoor heat exchanger is judged to be higher than the second sterilization temperature, the angle of the air guide piece is adjusted to gradually increase the air outlet area of the air outlet, so that the air outlet volume can be gradually increased, the temperature of the indoor heat exchanger is stable and gradually reduced, and the stability and the reliability of the operation of the air conditioner are facilitated. Specifically, after the temperature of the indoor heat exchanger is judged to be higher than the second sterilization temperature, the angle of the air guide is adjusted to a second set angle, the second set angle may be a lower air outlet limit position (for example, refer to position B in fig. 4 and 5) when the air guide swings up and down and rotates when the air conditioner is in normal operation and air is exhausted, and the high-temperature sterilization mode is exited after the air guide starts to be timed to operate for a seventh predetermined time when the angle of the air guide is adjusted to the second set angle. Therefore, when the angle of the air guide piece is adjusted to the second set angle, the temperature of the indoor heat exchanger is reduced to a certain extent, and the air conditioner runs for the seventh preset time as the starting timing point, so that the running time of the air conditioner at the indoor heat exchanger at higher temperature is conveniently calculated, meanwhile, the air conditioner continuously runs in the preset time range, the temperature of the indoor heat exchanger can be reduced to be not higher than the second sterilization temperature and not lower than the first sterilization temperature, the sterilization time is guaranteed, and the sterilization and disinfection effects can be guaranteed. And moreover, the reliable continuous operation of the air conditioner at a higher temperature of the indoor heat exchanger is realized by controlling a plurality of parameters and judgment conditions to realize sterilization and disinfection, and the high-temperature sterilization mode is quitted after the air conditioner continuously operates for a preset time, so that the problems of compressor damage, service life of electric control components and plastic parts caused by long-term operation under severe working conditions can be reduced or avoided.
For another example, after the temperature of the indoor heat exchanger is judged to be higher than the second sterilization temperature, the rotating speed of the indoor fan is increased, specifically, after the temperature of the indoor heat exchanger is judged to be higher than the second sterilization temperature, the rotating speed of the indoor fan is adjusted to a second set rotating speed (for example, the value range is 900-1800 RPM, and 1050-1250 RPM is preferred), and when the second set rotating speed is reached, the high-temperature sterilization mode is started to be timed until the air conditioner operates for a seventh preset time period, and then the air conditioner exits from the high-temperature sterilization mode.
Optionally, the value range of the seventh predetermined time period is 10-60 min, for example, the value range of the seventh predetermined time period may be 30-45 min. Therefore, the sterilization and disinfection effect can be ensured, and meanwhile, the damage of the compressor caused by the long-term operation under severe working conditions, the service life of an electric control component and the deformation problem of a plastic part can be reduced or avoided.
Referring to fig. 3, in some alternative embodiments of the present invention, if it is determined that the indoor heat exchanger temperature T2 is between the first sterilization temperature TL and the second sterilization temperature TH, the current operation state of the air conditioner is maintained, and the parameters such as the rotation speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device, the rotation speed of the outdoor fan, and the angle of the air guide may be kept unchanged, and the high temperature sterilization mode is exited after the timer is started until the air conditioner operates for a seventh predetermined time period. Therefore, the running time of the air conditioner at a higher temperature of the indoor heat exchanger can be conveniently calculated, the air conditioner can continuously run within a preset time range, and the sterilization time is ensured, so that the sterilization and disinfection effects can be ensured. And moreover, the reliable continuous operation of the air conditioner at a higher temperature of the indoor heat exchanger is realized by controlling a plurality of parameters and judgment conditions to realize sterilization and disinfection, and the high-temperature sterilization mode is quitted after the air conditioner continuously operates for a preset time, so that the problems of compressor damage, service life of electric control components and plastic parts caused by long-term operation under severe working conditions can be reduced or avoided.
Optionally, the value range of the seventh predetermined time period is 10-60 min, for example, the value range of the seventh predetermined time period is 30-45 min. Therefore, the sterilization and disinfection effect can be ensured, and meanwhile, the damage of the compressor caused by the long-term operation under severe working conditions, the service life of an electric control component and the deformation problem of a plastic part can be reduced or avoided.
According to some optional embodiments of the invention, the first predetermined time period is in a range of 1-20 min. Therefore, the air conditioner can have enough time to reach a stable operation state, and meanwhile, the working efficiency and the sterilization efficiency can be improved.
Further, when the outdoor temperature is above 15 ℃, the value range of the first preset time is 3-10 min; when the outdoor temperature is 5-15 ℃, the value range of the first preset time is 5-15 min; when the outdoor temperature is below 5 ℃, the value range of the first preset time is 8-20 min. The operation under the heating mode is to extract the outdoor air heat to indoor heating indoor heat exchanger and indoor air, therefore outdoor temperature is higher, and indoor heat exchanger just is easy to heat up, and system pressure promotes sooner. Therefore, the first preset time is short when the outdoor temperature is high, the first preset time is long when the outdoor temperature is low, the first preset time is determined according to the outdoor temperature, so that the air conditioner can operate in different outdoor temperature environments, more operation time can be provided for reaching a stable operation state when the outdoor temperature of the air conditioner is low, the air conditioner can quickly enter subsequent temperature judgment of the indoor heat exchanger when the outdoor temperature is high, the air conditioner can have corresponding preposed heating operation time under different working conditions, the air conditioner can be guaranteed to reach the stable operation state before entering the temperature judgment of the indoor heat exchanger, and meanwhile, the working efficiency and the sterilization efficiency can be improved.
According to some optional embodiments of the present invention, referring to fig. 3, when the air conditioner enters a high temperature sterilization mode, it is detected whether a current operation state of the air conditioner is in a heating state, if the current operation state of the air conditioner is in the heating state, the air conditioner keeps heating operation, and a value range of the first predetermined time period is 1-10 min, for example, the value range of the first predetermined time period may be 1-5 min at this time; if the current operation state of the air conditioner is not in the heating state, the air conditioner is controlled to be switched to the heating state for operation, and the value range of the first preset time is 1-15 min, for example, the value range of the first preset time can be 5-8 min. Therefore, when the air conditioner enters the high-temperature sterilization mode, whether the current operation state of the air conditioner is in the heating state is detected, and the corresponding preposed heating operation time (namely the first preset time length) is set according to the detection result, for example, the first preset time length is set to be shorter when the current operation state of the air conditioner is in the heating state relative to the fact that the current operation state of the air conditioner is not in the heating state. The air conditioner can be ensured to reach a stable operation state before entering the indoor heat exchanger for temperature judgment, and meanwhile, the working efficiency and the sterilization efficiency can be improved.
Optionally, the value range of the set change rate K may be 0.5 to 5 ℃/min, for example, the value range of the set change rate K may be 1 to 3 ℃/min. Therefore, the low-frequency liquid return for avoiding high-temperature high-pressure rapid stop and compression through better buffer control can be realized, and meanwhile, the operating efficiency and the sterilization efficiency of the air conditioner in a high-temperature sterilization mode can be considered.
According to some embodiments of the present invention, referring to fig. 3, during the whole process of the air conditioner in the high temperature sterilization mode, the temperature of the indoor heat exchanger is detected in real time, and whether the temperature of the indoor heat exchanger is greater than a protection temperature is determined in real time, if yes, the compressor of the air conditioner is stopped, wherein the protection temperature is greater than the third sterilization temperature and greater than the second sterilization temperature. The bacteria and viruses are not resistant to high temperature, the higher the sterilization and disinfection temperature is, the better the sterilization and disinfection temperature is theoretically, but for a system of an air conditioner, the system pressure upper limit can be considered from the reliability, and the temperature of the indoor heat exchanger can correspond to one upper temperature limit. Therefore, by setting an upper temperature limit (namely protection temperature) of the indoor heat exchanger, when the temperature of the indoor heat exchanger is higher than the protection temperature, the compressor is stopped, the system instability or damage caused by overhigh system pressure is avoided, and the shutdown protection of the air conditioner is realized.
Optionally, the protection temperature T2P may have a value range of 62-96 ℃. Therefore, the indoor heat exchanger of the air conditioner can operate at a higher temperature, an effective sterilization and disinfection effect is achieved, the reliability of system operation can be guaranteed, and shutdown protection of the air conditioner is better achieved. Wherein, the value range of the protection temperature of the R22 refrigerant type air conditioner is 68-73 ℃; the protection temperature of the air conditioners R410A and R32 ranges from 62 ℃ to 66 ℃; the R290 refrigerant type air conditioner has the protection temperature ranging from 90 ℃ to 96 ℃.
According to some alternative embodiments of the present invention, referring to fig. 3, after the compressor is stopped for a set stop time, the compressor is restarted, after the compressor is stopped, the temperature of the indoor heat exchanger starts to decrease, after the compressor stop time reaches the set stop time, the temperature of the indoor heat exchanger can decrease to be lower, at this time, the compressor can be restarted, and if the set stop time is not reached, whether the set stop time is reached is continuously detected. Or continuously detecting the temperature of the indoor heat exchanger after the compressor is stopped, judging whether the temperature of the indoor heat exchanger is lower than the recovery temperature, if so, restarting the compressor, and if not, continuously judging whether the temperature of the indoor heat exchanger is lower than the recovery temperature, wherein the recovery temperature is lower than the first sterilization temperature. After the compressor is stopped, the temperature of the indoor heat exchanger starts to decrease, and when the temperature of the indoor heat exchanger decreases below the recovery temperature, the compressor can be restarted. Therefore, the compressor is restarted after the compressor is stopped for a period of time or the temperature of the indoor heat exchanger is reduced to a certain temperature, so that the system can be ensured to continue to restart after the compressor is stopped while the shutdown protection is realized, and the working efficiency, the sterilization efficiency and the sterilization and disinfection effects of the air conditioner in a high-temperature sterilization mode are ensured.
Optionally, the set downtime is in a range of 1 to 30min, for example, the set downtime is in a range of 3 to 5 min. Therefore, the pressure of the system can be released within enough time, so that the temperature of the indoor heat exchanger can be reduced to a lower temperature before the compressor is restarted, the reliable operation of the system is ensured, and the shutdown frequency of the compressor is reduced; and, the work efficiency and the sterilization efficiency of the air conditioner in the high-temperature sterilization mode can be improved.
Optionally, the recovery temperature T2S is not more than 48 ℃, for example, the recovery temperature may be 38 ℃ to 48 ℃, so that reliable operation of the system can be ensured, and the shutdown frequency of the compressor can be reduced; and, the work efficiency and the sterilization efficiency of the air conditioner in the high-temperature sterilization mode can be improved.
In some alternative embodiments of the present invention, referring to fig. 3, before the compressor is restarted, it is determined whether the number of times of stoppage of the compressor is greater than the maximum number of times of stoppage. If the shutdown times of the compressor are greater than the maximum shutdown times, controlling the air conditioner to exit the high-temperature sterilization mode; and if the stop times of the compressor are not more than the maximum stop times, judging whether the compressor meets the restart condition or not, and restarting when the compressor meets the restart condition. Therefore, the damage to the compressor and a system caused by frequent shutdown of the compressor can be avoided, and the service life of the air conditioner is prolonged.
After the compressor is restarted, the step of determining whether the air conditioner is operated in the heating state for the first predetermined time period may be returned and sequentially executed downward.
Optionally, the maximum shutdown time Nmax ranges from 1 to 20, for example, from 3 to 20. Therefore, the damage to the compressor and a system caused by frequent shutdown of the compressor can be better avoided, and the service life of the air conditioner is better prolonged. And moreover, the working efficiency and the sterilization efficiency of the air conditioner in a high-temperature sterilization mode can be ensured.
According to some embodiments of the present invention, when the air conditioner enters the high temperature sterilization mode and the air conditioner is operated for heating, the initial value of the rotation speed of the indoor fan, the initial value of the frequency of the compressor, the initial value of the opening degree of the throttling device, and the initial value of the rotation speed of the outdoor fan do not exceed the maximum value of the interval corresponding to the current outdoor temperature. Because the operation under the heating mode is to extract the outdoor air heat to the indoor heat exchanger and the indoor air, the higher the outdoor temperature is, the more easily the indoor temperature rises, the faster the system pressure rises, the more quickly the system pressure rises, and the extraction heat needs to be reduced to prevent the system pressure from being too fast or too high out of control, so the operation frequency of the compressor and the rotating speed of the outdoor fan need to be correspondingly limited according to the outdoor temperature from the reliability aspect, and the stable and reliable operation of the air conditioning system can be ensured.
Further, the initial value of the rotation speed of the indoor fan, the initial value of the frequency of the compressor, the initial value of the opening degree of the throttle device, and the initial value of the rotation speed of the outdoor fan may be set to be close to the maximum value of the section corresponding to the current outdoor temperature, or the initial value of the rotation speed of the indoor fan, the initial value of the frequency of the compressor, the initial value of the opening degree of the throttle device, and the initial value of the rotation speed of the outdoor fan may be set to be the maximum value of the. Therefore, the efficiency of system regulation can be accelerated by setting the initial values of all the parameters to be larger through the initialization of all the parameters, the stable regulation of sterilization is achieved, and the problem of wide-range reliable operation of high-temperature and low-temperature operation is solved.
For example, the initial value of the indoor fan speed may be set to 60% -100% of the rated indoor fan speed. For example, the initial opening degree of the throttling device may be adjusted after the operation according to the maximum valve flow or a certain fixed value, but considering the adjustment speed, the initial opening degree may be determined by touching the corresponding compressor frequency and the outdoor fan rotation speed limit value under the outdoor environment temperature, so as to reduce the adjustment time.
The maximum values of the above parameters in different outdoor temperature ranges are exemplified below.
The first outdoor temperature interval is-10 to 0 ℃, the second outdoor temperature interval is 0 to 10 ℃, the third outdoor temperature interval is 10 to 20 ℃, the fourth outdoor temperature interval is 20 to 30 ℃, and the fifth outdoor temperature interval is 30 to 40 ℃. The maximum frequency of the compressor in the first outdoor temperature interval, the second outdoor temperature interval, the third outdoor temperature interval, the fourth outdoor temperature interval and the fifth outdoor temperature interval is 100Hz, 90Hz, 80Hz, 60Hz and 30Hz respectively. The maximum rotating speeds of the outdoor fan in the first outdoor temperature interval, the second outdoor temperature interval, the third outdoor temperature interval, the fourth outdoor temperature interval and the fifth outdoor temperature interval are respectively 850rpm, 750rpm, 660rpm, 550rpm and 450 rpm. The maximum opening degrees of the throttle device in the first outdoor temperature interval, the second outdoor temperature interval, the third outdoor temperature interval, the fourth outdoor temperature interval and the fifth outdoor temperature interval are respectively 250PPM, 300PPM, 350PPM, 400PPM and 450 PPM.
According to some embodiments of the invention, referring to fig. 3, when the air conditioner enters the high-temperature sterilization mode, the air conditioner starts to count time until the air conditioner operates for the fifth predetermined time, and then the air conditioner exits the high-temperature sterilization mode, so that the air conditioner can automatically exit after the air conditioner operates for the fifth predetermined time in the high-temperature sterilization mode, thereby not only ensuring the sterilization and disinfection effects, but also reducing or avoiding the problems of damage to a compressor, the service life of an electric control component and the deformation of a plastic part caused by long-term operation under severe working conditions. Or the air conditioner exits the high-temperature sterilization mode after receiving the signal for exiting the high-temperature sterilization mode. Therefore, the user can select the operation time of the air conditioner in the high-temperature sterilization mode according to the requirement.
Optionally, the value range of the fifth predetermined time period may be greater than 10 min. Therefore, the sterilization effect is ensured, and the stable and reliable operation of the air conditioner can be ensured. Preferably, the value range of the fifth preset time is 35-130 min.
Further, when the outdoor temperature is above 15 ℃, the value range of the fifth preset time is 35-50 min; when the outdoor temperature is 5-15 ℃, the value range of the fifth preset time is 40-70 min; and when the outdoor temperature is below 5 ℃, the value range of the fifth preset time is 50-90 min. Therefore, the fifth preset time is determined according to the outdoor temperature, the sterilization effect is guaranteed, and the stable and reliable operation of the air conditioner can be guaranteed.
In some embodiments, referring to fig. 3, during the operation of the air conditioner in the pasteurization mode, the pasteurization mode can be exited when at least one of the fifth predetermined period of time and the seventh predetermined period of time is satisfied.
In some embodiments of the present invention, referring to fig. 3, when the air conditioner enters the high temperature sterilization mode and the air conditioner is operated for heating, the initial angle of the air guide is controlled to be within the sterilization angle interval, that is, when entering a high-temperature sterilization mode and the air conditioner operates to heat, the initial angle of the air guide piece is adjusted within the sterilization angle interval, the "initial angle of the air guide member" refers to an angle after entering the high-temperature sterilization mode, if the air conditioner is already in an open state and operates in a non-heating mode before entering the high-temperature sterilization mode, the initial angle of the air guide member is controlled to be located in a sterilization angle interval after entering the high-temperature sterilization mode and while the air conditioner operates to heat, and if the air conditioner is already in the open state and operates in the heating mode before entering the high-temperature sterilization mode, the initial angle of the air guide member is controlled to be located in the sterilization angle interval after entering the high-temperature sterilization mode. Therefore, the temperature of the indoor heat exchanger can be increased as soon as possible, and the sterilization effect can be improved.
Specifically, in the whole high-temperature sterilization mode process of the air conditioner, the angle of the air guide piece is always within the sterilization angle interval.
Specifically, when the air guide is located in the sterilization angle interval, the range of the included angle beta between the air guide and the vertical upward direction is 5-120 degrees, so that the air guide extends obliquely upward from back to front or inclines downward from back to front by a small angle. Therefore, the air conditioner can avoid the problem that high-temperature wind scalds people in the whole high-temperature sterilization mode process by enabling the angle of the air guide piece to be always in the sterilization angle interval. For example, the air conditioner is a split wall-mounted air conditioner, and the value range of beta is 5-120 degrees.
In some optional embodiments of the present invention, when the air conditioner is a split floor type air conditioner, a value of β is in a range of 5 to 75 °, so that the wind guide extends obliquely upward in a rear-to-front direction. Therefore, when the air conditioner is a split floor type air conditioner, the problem that people are scalded by high-temperature wind can be better avoided.
In addition, when the air deflector is a microporous air deflector with micropores, the opening angle of the air deflector can be 0 degree, namely the air deflector is not opened.
For example, referring to fig. 4 and 5, when the air guide is located at the upper limit position of the sterilization angle interval (refer to position a in fig. 4 and 5), an included angle β between the air guide and the vertical upward direction is a minimum value β min, and the first set angle may be the minimum value β min; when the air guide is located at the lower limit position of the sterilization angle interval (see position B in fig. 4 and 5), the angle β between the air guide and the vertical upward direction is the maximum value β max, and the second set angle may be the maximum value β max.
According to some embodiments of the present invention, the adjustment rule of any one of the angle of the air guide, the rotational speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device, and the rotational speed of the outdoor fan is one of a first adjustment rule, a second adjustment rule, a third adjustment rule, and a fourth adjustment rule, wherein the first adjustment rule is stepwise adjusted by a step length as an adjustment step, the second adjustment rule is stepwise adjusted by a step length as an adjustment step as a product of a temperature difference value of the heat exchanger and a gain coefficient, the third adjustment rule is stepwise adjusted by a step length as an adjustment step as a percentage of a current value, and the fourth adjustment rule is stepwise adjusted by a step length as an adjustment step as a percentage of a rated value, wherein when the temperature of the indoor heat exchanger is raised, the temperature difference value of the indoor heat exchanger is an absolute value of a difference value between the current temperature; when the temperature of the indoor heat exchanger is reduced, the temperature difference value of the indoor heat exchanger refers to the absolute value of the difference value between the current temperature of the indoor heat exchanger and the second sterilization temperature. Therefore, in the process of adjusting any one parameter of the angle of the air guide piece, the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device and the rotating speed of the outdoor fan, the temperature of the indoor heat exchanger can be stably and gradually increased or reduced by gradually adjusting according to the set adjustment step, and the stability and the reliability of the operation of the air conditioner are facilitated. Wherein, the adjusting step refers to the amplitude of the parameter adjusted in each step when a certain parameter is adjusted step by step. When the angle of the air guide piece is adjusted, the adjustment step specifically refers to the amplitude of adjusting the angle of the air guide piece in each step.
In other embodiments, the rotation speed of the indoor fan and the rotation speed of the outdoor fan can be adjusted according to gears.
A specific adjustment manner when any one of the adjustment rule of the angle of the air guide, the rotational speed of the indoor fan, the frequency of the compressor, the opening degree of the throttle device, and the rotational speed of the outdoor fan is one of the first adjustment rule, the second adjustment rule, the third adjustment rule, and the fourth adjustment rule will be described in detail below.
And (3) reducing and adjusting the rotating speed of the indoor fan:
the first adjustment rule is to gradually adjust according to a step length as an adjustment step length, specifically to adjust and reduce the rotating speed of the indoor fan, wherein the step length means that the amplitude of the rotating speed of the indoor fan is adjusted at each step and is a fixed value, for example, the rotating speed of the indoor fan before the rotating speed of the indoor fan is adjusted is R, the rotating speed amplitude of the indoor fan after each step is reduced is a step length Rd, (R-Rd) is the rotating speed of the indoor fan after adjustment, and the value range of the Rd can be 1-300 rpm;
the second regulation rule is that the regulation step is carried out step by step according to the product of the temperature difference value and the gain coefficient of the heat exchanger, specifically, the regulation is carried out to reduce the rotating speed of the indoor fan, for example, the rotating speed of the indoor fan before the rotating speed of the indoor fan is regulated is R, the rotating speed amplitude of the indoor fan reduced each step is in TL-Tx Kd, and [ R- | TL-Tx |. Kd in ] is the rotating speed of the indoor fan after regulation, wherein Tx is the temperature of the indoor heat exchanger detected before the rotating speed of the indoor fan is regulated, TL is the first sterilization temperature, Kd is the gain coefficient for reducing the rotating speed, and the value range in Kd is 1-100 rpm/° C;
the third regulation rule is that the regulation step is gradually regulated according to the percentage of the current value, specifically, the rotation speed of the indoor fan is regulated and reduced, for example, the rotation speed of the indoor fan before the rotation speed of the indoor fan is regulated is R, the rotation speed amplitude of the indoor fan reduced each step is R x d internal%, and [ R-R x d internal% ] is the rotation speed of the indoor fan after regulation, wherein d% is the amplitude coefficient for reducing the rotation speed, and the value range of d internal% is 1% -50%;
the fourth regulation rule is that the regulation step is gradually regulated according to the percentage of the rated value, specifically, the rotation speed of the indoor fan is regulated and reduced, for example, the rotation speed of the indoor fan before the rotation speed of the indoor fan is regulated is R, the rotation speed amplitude of the indoor fan which is reduced each step is (Rmax-Rmin) Ed internal%, [ R- (Rmax-Rmin) Ed internal% ] is the rotation speed of the indoor fan after regulation, Rmax is the maximum rated rotation speed of the indoor fan, Rmin is the minimum rated rotation speed of the indoor fan, Ed internal% is the rated amplitude coefficient for reducing the rotation speed, and the value range of Ed internal% is 1% -50%.
And (3) increasing and adjusting the rotating speed of the indoor fan:
the first adjustment rule is to gradually adjust the indoor fan according to a step length, specifically to adjust and increase the rotation speed of the indoor fan, where the step length means that the amplitude of the rotation speed of the indoor fan is adjusted at each step and is a fixed value, for example, the rotation speed of the indoor fan before the rotation speed of the indoor fan is adjusted is R, the amplitude of the rotation speed of the indoor fan during each step is increased, i.e., the step length is Ru, and (R + Ru) is the rotation speed of the indoor fan after adjustment;
the second regulation rule is that the regulation step is gradually regulated according to the product of the temperature difference value of the heat exchanger and the gain coefficient, specifically, the rotation speed of the indoor fan is regulated and increased, for example, the rotation speed of the indoor fan before the rotation speed of the indoor fan is regulated is R, the rotation speed amplitude of the indoor fan increased in each step is | Tx-TH | Ku, and [ R + | Tx-TH | Ku ] is the rotation speed of the indoor fan after regulation, wherein Tx is the temperature of the indoor heat exchanger detected before the rotation speed of the indoor fan is regulated, TH is the second sterilization temperature, and Ku is the gain coefficient for increasing the rotation speed;
the third regulation rule is that the regulation step is gradually regulated according to the percentage of the current value, specifically, the rotation speed of the indoor fan is regulated and increased, for example, the rotation speed of the indoor fan before the rotation speed of the indoor fan is regulated is R, the rotation speed amplitude of the indoor fan increased in each step is R & ltu & gt, and [ R + R & ltu & gt ] is the rotation speed of the indoor fan after regulation, wherein u% is an amplitude coefficient for increasing the rotation speed;
the fourth regulation rule is that the regulation step is gradually regulated according to the percentage of the rated value, specifically, the rotating speed of the indoor fan is regulated and increased, for example, the rotating speed of the indoor fan before the rotating speed of the indoor fan is regulated is R, the rotating speed amplitude of the indoor fan increased in each step is (Rmax-Rmin) Eu inner%, R + (Rmax-Rmin) Eu inner% is the rotating speed of the indoor fan after regulation, Rmax is the maximum rated rotating speed of the indoor fan, Rmin is the minimum rated rotating speed of the indoor fan, and Eu inner% is the rated amplitude coefficient for increasing the rotating speed.
Frequency reduction regulation of the compressor:
the first adjustment rule is that the frequency of the compressor is adjusted step by step according to a step length, specifically, the step length refers to that the amplitude of the frequency of the compressor is adjusted at each step is a fixed value, for example, the frequency of the compressor before the frequency of the compressor is adjusted is F, the frequency amplitude of the compressor at each step is Fd, (F-Fd) is the frequency of the compressor after adjustment, and the value range of the Fd can be 1-30 Hz;
the second regulation rule is that the compressor is gradually regulated in a regulation step by step according to the product of the temperature difference value of the heat exchanger and the gain coefficient, specifically, the frequency of the compressor is regulated and reduced, for example, the frequency of the compressor before the frequency of the compressor is regulated is F, the frequency amplitude of the compressor at each step is | Tx-TH | Kd pressure, (F- | Tx-TH | Kd pressure) is the frequency of the compressor after regulation, wherein Tx is the temperature of the indoor heat exchanger detected before the frequency of the compressor is regulated, TH is the second sterilization temperature, Kd pressure is the gain coefficient for reducing the frequency, and the value range of Kd pressure is 1-12 Hz/DEG C;
the third adjustment rule is to adjust the frequency of the compressor step by step according to the percentage of the current value, specifically, until the adjustment reduces the frequency of the compressor, for example, the frequency of the compressor before adjusting the frequency of the compressor is F, the frequency amplitude of the compressor per step is F × d pressure%, (F-F × d pressure%) is the frequency of the compressor after adjustment, wherein d pressure% is the amplitude coefficient of the reduced frequency, and the value range of d pressure% is 1% -50%;
the fourth regulation rule is that the regulation step is gradually regulated according to the percentage of the rated value, specifically, the frequency of the compressor is reduced by regulation, for example, the frequency of the compressor before the frequency of the compressor is regulated is F, the frequency amplitude of the compressor per step is (Fmax-Fmin) × Ed pressure%, [ F- (Fmax-Fmin) × Ed pressure% ] is the frequency of the compressor after regulation, Fmax is the maximum allowable frequency of the compressor, Fmin is the minimum allowable frequency of the compressor, Ed pressure% is the rated amplitude coefficient of the reduced frequency, and the value range of Ed pressure% is 1% -50%.
Frequency boost regulation of the compressor:
the first adjustment rule is to adjust the frequency of the compressor step by step according to a step length, specifically, to adjust and increase the frequency of the compressor, where the step length is that the amplitude of the frequency of the compressor adjusted at each step is a fixed value, for example, the frequency of the compressor before the frequency of the compressor is adjusted is F, the frequency amplitude of the compressor increased at each step is the step length Fu, and (F + Fu) is the frequency of the compressor after adjustment;
the second adjustment rule is to gradually adjust the frequency of the compressor in accordance with an adjustment step length obtained by multiplying a temperature difference value of the heat exchanger by a gain coefficient, specifically to adjust and increase the frequency of the compressor, for example, the frequency of the compressor before adjusting the frequency of the compressor is F, the frequency amplitude of the compressor increased in each step is | TL-Tx | Ku pressure, [ F + | TL-Tx | Ku pressure ] is the frequency of the compressor after adjustment, where Tx is the temperature of the indoor heat exchanger detected before adjusting the frequency of the compressor, TL is the first sterilization temperature, and Ku pressure is the gain coefficient for increasing the frequency;
the third adjustment rule is to adjust the frequency of the compressor step by step according to the percentage of the current value, specifically to adjust and increase the frequency of the compressor, for example, the frequency of the compressor before adjusting the frequency of the compressor is F, the frequency amplitude of the compressor increased by each step is F × u pressure%, (F + F × u pressure%) is the frequency of the compressor after adjustment, wherein u pressure% is the amplitude coefficient of the increased frequency;
the fourth regulation rule is that the regulation is performed step by step according to the percentage of the rated value, specifically, the frequency of the compressor is increased by regulation, for example, the frequency of the compressor before the frequency of the compressor is regulated is F, the frequency amplitude of the compressor increased by each step is (Fmax-Fmin) × Eu pressure%, [ F + (Fmax-Fmin) × Eu pressure% ] is the frequency of the compressor after regulation, Fmax is the maximum allowable frequency of the compressor, Fmin is the minimum allowable frequency of the compressor, and Eu pressure% is the rated amplitude coefficient of the increased frequency.
Opening degree reduction adjustment of the throttle device:
the first adjustment rule is that the adjustment is performed step by step according to a step length, specifically, the step length is to adjust and reduce the opening degree of the throttling device, wherein the step length means that the amplitude of the opening degree of the throttling device in each step is a fixed value, for example, the opening degree of the throttling device before the opening degree of the throttling device is adjusted is P, the amplitude of the opening degree of the throttling device in each step is Pd, (P-Pd) is the opening degree of the throttling device after adjustment, and the value range of Pd is 1-250 PPM;
the second regulation rule is that the regulation step is gradually regulated according to the product of the temperature difference of the heat exchanger and the gain coefficient, specifically, the opening degree of the throttling device is regulated and reduced, for example, the opening degree of the throttling device before the opening degree of the throttling device is regulated is P, the opening degree amplitude of the throttling device in each step is a node of TL-Tx Kd, [ P- | TL-Tx | Kd ], namely the opening degree after regulation, wherein Tx is the temperature of the indoor heat exchanger detected before the opening degree of the throttling device is regulated, TL is the first sterilization temperature,
the Kd section is a gain coefficient for reducing the opening degree, and the value range of the Kd section is 1-90 PPM/DEG C;
the third regulation rule is that the regulation step is gradually regulated according to the percentage of the current value, specifically, the opening degree of the throttling device is regulated and reduced, for example, the opening degree of the throttling device before the opening degree of the throttling device is regulated is P, the opening degree amplitude of the throttling device in each step is P + d node percent, and (P-P + d node percent) is the opening degree after regulation, wherein d node percent is the amplitude coefficient for reducing the opening degree, and the value range of d node percent is 1-50 percent;
the fourth regulation rule is that the regulation step is gradually regulated according to the percentage of the rated value, specifically, the opening degree of the throttling device is regulated and reduced, for example, the opening degree of the throttling device before the opening degree of the throttling device is regulated is P, the opening degree amplitude of the throttling device per step is (Pmax-Pmin) Ed percent, P- (Pmax-Pmin) Ed percent is the opening degree after regulation, Pmax is the maximum allowable opening degree of the throttling device, Pmin is the minimum allowable opening degree of the throttling device, Ed percent is the rated amplitude coefficient of the reduced opening degree, and the range of the Ed percent is 1-50%.
Opening degree increase adjustment of the throttling device:
the first adjustment rule is to gradually adjust the opening degree of the throttling device according to a step length, specifically to adjust and increase the opening degree of the throttling device, where the step length means that the amplitude of the opening degree of the throttling device in each step is a fixed value, for example, the opening degree of the throttling device before the opening degree of the throttling device is adjusted is P, the amplitude of the opening degree of the throttling device in each step, that is, the step length is Pu, and P + Pu is the opening degree after adjustment;
the second adjustment rule is that the adjustment step is gradually adjusted according to the product of the temperature difference of the heat exchanger and the gain coefficient, specifically, the opening degree of the throttling device is adjusted and increased, for example, the opening degree of the throttling device before the opening degree of the throttling device is adjusted is P, the opening degree amplitude of the throttling device in each step is | Tx-TH | Ku node, (P + | Tx-TH | Ku node) is the opening degree after adjustment, wherein Tx is the temperature of the indoor heat exchanger detected before the opening degree of the throttling device is adjusted, TH is the second sterilization temperature, and Ku is the gain coefficient for increasing the opening degree;
the third regulation rule is that the regulation steps are gradually regulated according to the percentage of the current value, specifically, the opening degree of the throttle device is regulated and increased, for example, the opening degree of the throttle device before the opening degree of the throttle device is regulated is P, the opening degree amplitude of the throttle device in each step is P × u section%, P + P × u section% is the opening degree after regulation, wherein u section% is the amplitude coefficient of the opening degree;
the fourth regulation rule is that the opening degree of the throttling device is gradually regulated according to the percentage of the rated value, specifically, the opening degree of the throttling device is regulated to be increased, for example, the opening degree of the throttling device before the opening degree of the throttling device is regulated is P, the opening degree amplitude of the throttling device at each step is (Pmax-Pmin) Eu (festival), namely the opening degree after regulation, Pmax is the maximum allowable opening degree of the throttling device, Pmin is the minimum allowable opening degree of the throttling device, and Eu (festival) is the rated amplitude coefficient of the increased opening degree.
And (3) reducing and adjusting the rotating speed of the outdoor fan:
the first adjustment rule is that the adjustment is performed step by step according to a step length, specifically, the rotation speed of the outdoor fan is adjusted and reduced, the step length means that the amplitude of the rotation speed of the outdoor fan is adjusted in each step and is a fixed value, for example, the rotation speed of the outdoor fan before the rotation speed of the outdoor fan is adjusted is W, the amplitude of the rotation speed of the outdoor fan which is reduced in each step is the step length Wd, W-Wd is the rotation speed after the adjustment, and the value range of W x d can be 1-300 rpm;
the second regulation rule is that the regulation step is gradually regulated according to the product of the temperature difference value of the heat exchanger and the gain coefficient, specifically, the rotation speed of the outdoor fan is regulated and reduced until the rotation speed of the outdoor fan is regulated and reduced, for example, the rotation speed of the outdoor fan before the rotation speed of the outdoor fan is regulated is W, and the rotation speed amplitude of the outdoor fan is reduced by one step is | Tx-TL |. KdOuter cover，[W-|TL-Tx|*KdOuter cover]Namely the adjusted rotating speed, wherein Tx is the temperature of the indoor heat exchanger detected before the rotating speed of the outdoor fan is adjusted, TL is the first sterilization temperature, Kd is the gain coefficient for reducing the rotating speed, and Kd isOuter coverThe value range of (A) is 1-100 rpm/DEG C;
the third regulation rule is that the regulation step is gradually regulated according to the percentage of the current value, specifically, the rotation speed of the outdoor fan is regulated and reduced, for example, the rotation speed of the outdoor fan before the rotation speed of the outdoor fan is regulated is W, and the rotation speed amplitude of the outdoor fan is reduced in each step is W x dOuter cover％，W-W*dOuter cover% is the rotational speed after adjustment, where dOuter cover% is the amplitude coefficient for reducing the rotational speed, dOuter cover% of the total content is 1-50%;
the fourth regulation rule is that the regulation step is gradually regulated according to the percentage of the rated value, specifically, the rotation speed of the outdoor fan is regulated and reduced, for example, the rotation speed of the indoor fan is W before the rotation speed of the outdoor fan is regulated, and the rotation speed amplitude of the outdoor fan is reduced by (Wmax-Wmin) × Ed every stepOuter cover％，[W-(Wmax-Wmin)*EdOuter cover％]Namely the adjusted rotating speed, Wmax is the maximum value of the rated rotating speed of the outdoor fan, Wmin is the minimum value of the rated rotating speed of the outdoor fan, EdOuter cover% is the nominal amplitude coefficient, Ed, for reducing the rotational speedOuter cover% of the total amount of the active ingredients is 1-50%.
And (3) increasing and adjusting the rotating speed of the outdoor fan:
the first adjustment rule is that the adjustment is performed step by step according to a step length, specifically, the rotation speed of the outdoor fan is increased by adjustment, the step length means that the amplitude of the rotation speed of the outdoor fan is adjusted in each step and is a fixed value, for example, the rotation speed of the outdoor fan before the rotation speed of the outdoor fan is adjusted is W, the amplitude of the rotation speed of the outdoor fan increased in each step is the step length Wu, and W + Wu is the rotation speed after the adjustment;
the second regulation rule is that the regulation step is gradually regulated according to the product of the temperature difference value of the heat exchanger and the gain coefficient, specifically, the rotation speed of the outdoor fan is regulated and increased, for example, the rotation speed of the outdoor fan before the rotation speed of the outdoor fan is regulated to be W, and the rotation speed amplitude of the outdoor fan increased in each step is | TH-Tx | Ku |Outer cover，(W+|TH-Tx|*KuOuter cover) I.e. the adjusted rotation speed, wherein Tx is the temperature of the indoor heat exchanger detected before the rotation speed of the outdoor fan is adjusted, TH is the second sterilization temperature, KuOuter coverGain factor for increasing the rotation speed;
the third regulation rule is that the regulation step is gradually regulated according to the percentage of the current value, specifically, the rotating speed of the outdoor fan is regulated and increased, for example, the rotating speed of the outdoor fan before the rotating speed of the outdoor fan is regulated is W, and the rotating speed amplitude of the outdoor fan increased in each step is W uOuter cover%, wherein uOuter cover% is amplitude coefficient for increasing rotation speed;
the fourth regulation rule is that the regulation step is gradually regulated according to the percentage of the rated value, specifically, the rotation speed of the outdoor fan is regulated and increased, for example, the rotation speed of the outdoor fan before the rotation speed of the outdoor fan is regulated is W, and the rotation speed amplitude of the outdoor fan increased by each step is (Wmax-Wmin). EuOuter cover% Wmax is the maximum rated speed of the outdoor fan, Wmin is the minimum rated speed of the outdoor fan, EuOuter cover% is the nominal amplitude factor that increases the rotational speed.
The angle modulation of air guide reduces so that the air-out area of air outlet gradually:
the first regulation rule is for adjusting step by step according to the step length, specifically to the angle of adjusting the air guide, the step length means that the range size of the angle of adjusting the air guide in each step is a fixed value, for example, the air guide swings the rotation from top to bottom, the included angle between the air guide and the vertical upward direction before adjusting the air guide is beta, the angle range of rotating the air guide in each step, that is, the step length, is beta d, and the air guide rotates towards the direction of closing the air outlet, and the value range of beta d can be 1-75 degrees.
The second adjustment rule is to adjust the angle of the air guide member step by step according to the product of the temperature difference of the heat exchanger and the gain coefficient, for example, the air guide member swings and rotates up and down, the included angle between the air guide member and the vertical upward direction before the air guide member is adjusted is beta, the angle amplitude of the rotation of the air guide member in each step is | -TL-Tx | -Kd guide, and the air guide member rotates towards the direction of closing the air outlet, wherein Tx is the temperature of the indoor heat exchanger detected before the air guide member is adjusted, TL is the first sterilization temperature, Kd guide is the gain coefficient for reducing the angle, and Kd guide takes a value range of 1-25 °/° c.
The third adjustment rule is to adjust the step by step according to the percentage of the current value, specifically to adjust the angle of the air guide, for example, the air guide swings and rotates up and down, the included angle between the air guide before the air guide is adjusted and the vertical upward direction is β, the angle amplitude of the air guide rotating in each step is β × d% and the air guide rotates towards the direction of closing the air outlet, wherein d% is an amplitude coefficient for reducing the angle, and the value range of d% is 1% -50%.
The fourth adjustment rule is that the adjustment step is adjusted step by step according to the percentage of the rated value, specifically, the angle of the air guide member is adjusted, for example, the air guide member swings up and down and rotates, the included angle between the air guide member before the air guide member is adjusted and the vertical upward direction is β, the angular amplitude of each step of rotating the air guide member is (β max- β min) × Ed% and the air guide member rotates towards the direction of closing the air outlet. Wherein β max is a maximum value of an angle between the air guide and the vertically upward direction (refer to fig. 4 and 5), β min is a minimum value of an angle between the air guide and the vertically upward direction (refer to fig. 4 and 5), Ed% is a rated amplitude coefficient of the reduction angle, and a value range of Ed% is 1% -50%.
The angle modulation of wind-guiding piece is so that the air-out area of air outlet crescent:
the first adjustment rule is that the adjustment is performed step by step according to a step length, specifically, to the adjustment of the angle of the air guide, the step length means that the amplitude of the angle of the air guide in each step is a fixed value, for example, the air guide swings up and down to rotate, an included angle between the air guide and the vertical upward direction before the air guide is adjusted is β, the amplitude of the angle of the air guide in each step is β u, and the air guide rotates toward the direction of opening the air outlet.
The second adjustment rule is to adjust the angle of the air guide member step by step according to the product of the temperature difference of the heat exchanger and the gain coefficient, for example, the air guide member swings and rotates up and down, the included angle between the air guide member and the vertical upward direction before the air guide member is adjusted is beta, the angle amplitude of the rotation of the air guide member in each step is Tx-TH |. Ku guide, and the air guide member rotates towards the direction of opening the air outlet, wherein Tx is the temperature of the indoor heat exchanger detected before the air guide member is adjusted, TH is the second sterilization temperature, and Ku guide is the gain coefficient of increasing the angle.
In fig. 4 and 5, the air guide is in the shape of a straight plate, and the inclined direction of the air guide is the air supply direction of the air conditioner. In addition, when the air guide member is not a straight plate, the inclined direction of the air guide plate may not be the same as the air blowing direction of the air conditioner.
The third adjustment rule is to adjust the step by step according to the percentage of the current value, specifically to adjust the angle of the air guide, for example, the air guide swings up and down to rotate, the included angle between the air guide before the air guide is adjusted and the vertical upward direction is β, the angular amplitude of each step of rotating the air guide is β × u guide%, and the air guide rotates toward the direction of opening the air outlet, where u guide% is an amplitude coefficient of an increasing angle.
The fourth adjustment rule is to adjust the step by step according to the percentage of the rated value, specifically to adjust the angle of the air guide, for example, the air guide swings up and down to rotate, the included angle between the air guide before the air guide is adjusted and the vertical upward direction is β, the angular amplitude of each step of rotating the air guide is (β max- β min) × Eu conduction%, and the air guide rotates toward the direction of opening the air outlet. Wherein β max is a maximum value of an angle between the air guide and the vertically upward direction (see fig. 4 and 5), β min is a minimum value of an angle between the air guide and the vertically upward direction (see fig. 4 and 5), and Eu% is a rated amplitude coefficient of the increase angle.
In some embodiments of the present invention, some parameters of the air conditioner may be set as follows:
the value range of the maximum allowable frequency Fmax of the compressor is 70-160 Hz, and the value range of the minimum allowable frequency Fmin of the compressor is 0.1-40 Hz;
the value range of the maximum value Wmax of the rated rotating speed of the outdoor fan is 700-1100 RPM, and the value range of the minimum value Wmin of the rated rotating speed of the outdoor fan is 150-600 RPM;
the value range of the maximum allowable opening degree Pmax of the throttling device is 350-650 PPM, and the value range of the minimum allowable opening degree Pmin of the throttling device is 0-250 PPM;
the maximum value Rmax of the rated rotating speed of the indoor fan ranges from 900 RPM to 1600RPM, and the minimum value Rmin of the rated rotating speed of the indoor fan ranges from 150 RPM to 800 RPM;
the minimum rotating speed Rss of the indoor fan is less than or equal to Rmin, the value range of Rss is 50-700 RPM, and 150-450 RPM is preferred;
the maximum rotating speed Rxx of the indoor fan is larger than or equal to Rmax, the value range of Rxx is 900-1800 RPM, and 1050-1250 RPM is preferred.
Therefore, the frequency of the compressor, the rotating speed of the outdoor fan, the opening degree of the throttling device and the rated rotating speed of the indoor fan are set in the ranges, so that each parameter has a large adjusting range, and the temperature of the indoor heat exchanger can be adjusted better by adjusting each parameter. And, through making the minimum rotational speed of indoor fan can be less than the rated revolution minimum of indoor fan and make the maximum rotational speed of indoor fan can be higher than the maximum value of the rated revolution of indoor fan, can further enlarge the rotational speed control range of indoor fan from this to can adjust the temperature of indoor heat exchanger better, thereby can realize the high temperature sterilization effect better.
According to some embodiments of the present invention, the adjustment of any one of the angle of the air guide, the rotation speed of the indoor fan, the frequency of the compressor, the opening degree of the throttle device, and the rotation speed of the outdoor fan is adjusted step by step according to an adjustment step, for example, the adjustment step may be adjusted by the adjustment step described above. Therefore, in the process of adjusting any one parameter of the angle of the air guide piece, the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling device and the rotating speed of the outdoor fan, the temperature of the indoor heat exchanger can be stably and gradually increased or reduced by gradually adjusting according to the set adjustment step, and the stability and the reliability of the operation of the air conditioner are facilitated.
Wherein, in the process of adjusting any one of the angle of the air guide, the rotating speed of the indoor fan, the frequency of the compressor, the opening of the throttling device and the rotating speed of the outdoor fan, the adjustment step of increasing the system pressure is not larger than the adjustment step of reducing the system pressure. The system pressure can be improved by reducing the rotating speed of the indoor unit, improving the frequency of the compressor, reducing the opening of the throttling device and improving the rotating speed of the outdoor fan, and the system pressure can be reduced by improving the rotating speed of the indoor unit, reducing the frequency of the compressor, increasing the opening of the throttling device and reducing the rotating speed of the outdoor fan. When the temperature of the indoor heat exchanger needs to be increased, the temperature of the indoor heat exchanger can be increased by adjusting parameters, and the system pressure is increased in the process of increasing the temperature of the indoor heat exchanger; when the temperature of the indoor heat exchanger needs to be reduced, the temperature of the indoor heat exchanger can be reduced by adjusting parameters, and the system pressure is reduced in the process of reducing the temperature of the indoor heat exchanger. Therefore, in the process of adjusting the parameters, the adjustment step for increasing the system pressure is not larger than the adjustment step for reducing the system pressure, so that the system pressure can be slowly increased when the system pressure is lower, and the system pressure can be quickly reduced when the system pressure is higher, and therefore, the reliable and stable operation of the air conditioner can be ensured in the process of adjusting the parameters.
When the adjustment of any one parameter of the angle of the air guide, the rotational speed of the indoor fan, the frequency of the compressor, the opening degree of the throttle device, and the rotational speed of the outdoor fan is adjusted according to one of the first adjustment rule, the second adjustment rule, the third adjustment rule, and the fourth adjustment rule, the comparison of the adjustment steps of the increase in the system pressure and the decrease in the system pressure in each adjustment rule will be described below.
For example, when adjusting the angle of the air guide, the following adjustment rules are adjusted: β d ≦ β u, e.g., β u ≧ 1.5 β d; and adjusting according to a second adjusting rule: kd lead ≦ Ku lead, e.g., Ku lead ≧ 1.2Kd lead; adjusting according to a third adjusting rule: d% to u% such as u% to 1.5 d%; and (4) adjusting according to a fourth adjusting rule: e.d. conductivity% is less than or equal to Eu conductivity%, for example Eu conductivity% is more than or equal to 1.5 E.d.conductivity%.
For example, when the rotating speed of the indoor fan is adjusted, the following regulation rules are adjusted: rd ≦ Ru, e.g., Ru ≧ 1.5 Rd; and adjusting according to a second adjusting rule: within Kd ≦ Ku, e.g., within Ku ≧ 1.2 Kd; adjusting according to a third adjusting rule: d is less than or equal to u, for example, u is more than or equal to 1.5 d; and (4) adjusting according to a fourth adjusting rule: within Ed is less than or equal to Eu, for example, within Eu is more than or equal to 1.5 Ed.
For example, when adjusting the frequency of the compressor, according to a first adjustment rule: Fd.gtoreq.Fu, for example Fd.gtoreq.1.5 Fu; and adjusting according to a second adjusting rule: kd pressure ≧ Ku pressure, e.g., Kd pressure ≧ 1.2Ku pressure; adjusting according to a third adjusting rule: d pressure ≧ u pressure%, e.g., d pressure ≧ 1.5u pressure%; and (4) adjusting according to a fourth adjusting rule: ed% or more and Eu% or less, for example, Ed% or more and 1.5 Eu% or less.
For example, when the opening degree of the throttle device is adjusted, the following are adjusted according to a first adjustment rule: pd ≦ Pu, e.g., Pu ≧ 1.5 Pd; and adjusting according to a second adjusting rule: kd node is not less than Ku node, for example, Ku node is not less than 1.2Kd node; adjusting according to a third adjusting rule: section d is less than or equal to section u, for example, section u is more than or equal to section 1.5 d; and (4) adjusting according to a fourth adjusting rule: ed section% is less than or equal to Eu section%, for example Eu section% is more than or equal to 1.5Ed section%.
For example, when the rotating speed of the outdoor fan is adjusted, the following regulation rules are adjusted: wd ≧ Wu, e.g., Wd ≧ 1.5 Wu; and adjusting according to a second adjusting rule: kdOuter cover≥KuOuter coverE.g. KdOuter cover≥1.2KuOuter cover(ii) a Adjusting according to a third adjusting rule: dOuter cover％≥uOuter cover%, e.g. dOuter cover％≥1.5uOuter coverPercent; and (4) adjusting according to a fourth adjusting rule: edOuter cover％≥EuOuter cover%, e.g. EdOuter cover％≥1.5EuOuter cover％。
The high-temperature sterilization mode also comprises the step of carrying out initialization processing on the air conditioner when entering the high-temperature sterilization mode. The air conditioner is initialized according to the current indoor and outdoor ambient temperatures to meet the requirement of entering a high-temperature sterilization mode rapidly under different environments.
The initialization processing comprises the adjustment of one or more of an indoor fan, an outdoor fan, a compressor, a throttling element and an air guide angle of the air conditioner.
Taking the indoor fan initialization as an example, the indoor fan speed R0 may be initialized according to the indoor temperature T1, for example, the indoor fan initial speed R0 is positively correlated to the indoor temperature. That is, the higher the indoor temperature is, the greater the initial rotation speed R0 of the indoor fan is. Of course, the initial operation of the indoor fan may be to set the initial indoor fan speed R0 to the low-range wind speed. That is, when entering the high temperature sterilization mode, the rotation speed of the indoor fan is adjusted to the low-gear wind speed. Wherein, when indoor fan has a plurality of gears, adjust indoor fan to lower gear.
For example, when the indoor fan has two gears, namely a high gear and a low gear, the indoor fan is in the low gear, that is, the rotating speed of the indoor fan is in the low gear wind speed; when the indoor fan has more than three gears, the rotating speed of the indoor fan is in a lower gear. Specifically, when the indoor fan has a first gear to a fifth gear from low to high, the low-gear wind speed may be the first gear or the second gear of the indoor fan, and preferably, the indoor fan speed is the low-gear wind speed when the indoor fan is in the first gear.
Fig. 7 is a schematic diagram illustrating a corresponding relationship between an initial indoor fan rotation speed R0 and an indoor temperature T1 in a high-temperature sterilization mode according to an embodiment.
In addition, when entering the high-temperature sterilization mode, the indoor fan may be adjusted to a lower rotation speed range (for example, a predetermined percentage range of the maximum rotation speed (for example, the rotation speed range is in a range of 5% -80% of the maximum rotation speed)), and the indoor fan rotation speed may be adjusted according to the indoor temperature T1 in this range. Through the initial adjustment of the indoor fan, the indoor heat exchanger can be promoted to quickly reach the sterilization temperature, and the high-temperature sterilization time is effectively shortened.
Taking the outdoor fan initialization as an example, the outdoor fan speed may be initialized according to the outdoor temperature T4, and the outdoor fan initial speed is inversely related to the outdoor temperature T4. That is, the higher the outdoor temperature T4 is, the lower the outdoor fan initial rotation speed W0 is; conversely, the lower the outdoor temperature T4, the higher the outdoor fan initial rotation speed W0. Thereby maintaining the stability of the system under the condition of high-temperature sterilization.
Fig. 8 is a schematic diagram illustrating a corresponding relationship between an initial rotation speed W0 of an outdoor fan and an outdoor temperature T4 in a high-temperature sterilization mode according to an embodiment.
Taking the compressor initialization as an example, the compressor frequency may be initialized according to the outdoor temperature T4, the compressor initial frequency F0 is inversely related to the outdoor temperature T4; that is, the higher the outdoor temperature T4, the lower the compressor initial frequency F0; conversely, the lower the outdoor temperature T4, the higher the compressor initial frequency F0. Therefore, the system can be maintained to be stable under the condition of high-temperature sterilization, and the compressor and the air conditioning system can be promoted to be stably operated.
Fig. 9 is a schematic diagram illustrating a correspondence relationship between an initial frequency F0 of the compressor and an outdoor temperature T4 in a high-temperature sterilization mode according to an embodiment.
Taking the throttle element initialization as an example, the throttle element opening degree is initialized according to the outdoor temperature T4, and the throttle element initial opening degree P0 is positively correlated with the outdoor temperature T4. That is, the higher the outdoor temperature T4, the larger the throttle element initial opening degree P0; conversely, the lower the outdoor temperature T4, the smaller the throttle element initial opening P0. Therefore, the system can be maintained to be stable under the condition of high-temperature sterilization, and the compressor and the air conditioning system can be promoted to be stably operated.
Fig. 10 is a schematic diagram illustrating a corresponding relationship between an initial opening P0 of the throttling element and an outdoor temperature T4 in a high-temperature sterilization mode according to an embodiment.
Taking the wind guide angle initialization as an example, the wind guide angle of the air conditioner is initialized to the sterilization angle. Wherein the sterilization angle can be opened a smaller angle for the air conditioner to the circulation of air on the surface of the indoor heat exchanger can be reduced, so that the indoor heat exchanger can reach the sterilization temperature quickly.
According to the air conditioner provided by the embodiment of the second aspect of the invention, the air conditioner is provided with the air inlet and the air outlet, the air conditioner comprises an indoor fan, an indoor heat exchanger, a throttling device, a compressor, an outdoor fan, an outdoor heat exchanger and a control module, wherein the compressor, the outdoor heat exchanger, the throttling device and the indoor heat exchanger are sequentially connected and form a refrigerant cycle, the air outlet is provided with a rotatable air guide, the working mode of the air conditioner comprises a high-temperature sterilization mode, and after the air conditioner enters the high-temperature sterilization mode, the control module controls the air conditioner to work according to the sterilization control method provided by the embodiment of the first aspect of the invention.
The sterilization control method of the air conditioner in the high-temperature sterilization mode may refer to the above, and will not be described herein again.
The air conditioner provided by the embodiment of the invention has a high-temperature sterilization mode, and the air conditioner is controlled by the arranged control module to be carried out in the high-temperature sterilization mode according to the sterilization control method, so that sterilization and disinfection can be realized, high-temperature high-pressure quick-jump stop and low-frequency liquid return of a compressor can be avoided through buffer control, and the stability of system operation is ensured.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (32)

1. A control method of an air conditioner, characterized in that the control method comprises a high-temperature sterilization mode, and the high-temperature sterilization mode comprises the following steps:
acquiring the temperature T2 of the indoor heat exchanger, and adjusting the temperature T2 of the indoor heat exchanger to be within a preset range;
and judging whether the temperature T2 of the indoor heat exchanger reaches a preset temperature T2b, and if the temperature T2 of the indoor heat exchanger reaches the preset temperature T2b, raising the air supply direction to prevent scalding.
2. The control method of an air conditioner according to claim 1, wherein the high-temperature sterilization mode includes:
and determining the air guide angle alpha of the air conditioner according to the temperature T2 of the indoor heat exchanger, the preset temperature T2b, the maximum air guide angle alpha max capable of being raised of the air conditioner and the initial air guide angle alpha min of the air conditioner.
3. The control method of an air conditioner according to claim 2, wherein the high-temperature sterilization mode includes:
dividing the space between the preset temperature T2b and the protection temperature T2p of the indoor heat exchanger into a plurality of temperature sections, dividing the space between the maximum air guide angle alpha max and the initial air guide angle alpha min into a plurality of sections corresponding to the plurality of temperature sections, and determining the air guide angle alpha according to the temperature section where the temperature T2 of the indoor heat exchanger is located.
4. The control method of an air conditioner according to claim 2,
if the indoor heat exchanger temperature T2 reaches the preset temperature T2b, the wind guide angle alpha is not lower than an initial wind guide angle alpha min;
if the indoor heat exchanger temperature T2 is greater than the preset temperature T2b, the indoor heat exchanger temperature T2 is higher by a preset value per liter, the wind guide angle alpha is raised by alpha u, and the wind guide angle alpha is not higher than a maximum wind guide angle alpha max.
5. The control method of an air conditioner according to claim 4,
if the indoor heat exchanger temperature T2 is greater than the preset temperature T2b, the air guide angle alpha is reduced by alpha d when the indoor heat exchanger temperature T2 is reduced by a preset value, and the air guide angle alpha is not lower than an initial air guide angle alpha min, wherein alpha d is in the range of 1-75 degrees, and alpha u is not less than 1.5 alpha d.
6. The control method of an air conditioner according to claim 2,
if the temperature of the indoor heat exchanger temperature T2 rises, the wind guide angle alpha is raised (T2-T2b) Ku, and the wind guide angle alpha is not more than a maximum wind guide angle alpha max;
if the temperature of the indoor heat exchanger temperature T2 is reduced, the wind guide angle alpha is reduced (T2-T2b) Kd, and the wind guide angle alpha is not less than the initial wind guide angle alpha min,
wherein Kd is in the range of 1 to 25, and Ku is more than or equal to 1.2 Kd.
7. The control method of an air conditioner according to claim 2,
if the temperature of the indoor heat exchanger temperature T2 rises, the air guide angle alpha is raised by u% per liter by a preset value of the indoor heat exchanger temperature T2, and the air guide angle alpha is not more than the maximum air guide angle alpha max;
if the temperature of the indoor heat exchanger temperature T2 is reduced, the wind guide angle alpha is reduced by d% every time the indoor heat exchanger temperature T2 is reduced by a preset value, and the wind guide angle alpha is not less than an initial wind guide angle alpha min,
wherein d% is in the range of 1 to 50%, and u% is more than or equal to 1.5 d%.
8. The control method of an air conditioner according to claim 2,
if the temperature of the indoor heat exchanger temperature T2 rises, the wind guide angle alpha is raised by (alpha max-alpha min) Eu%, and the wind guide angle alpha is not greater than the maximum wind guide angle alpha max;
if the temperature of the indoor heat exchanger temperature T2 is decreased, the wind guide angle alpha is decreased by (alpha max-alpha min) Ed%, and the wind guide angle alpha is not less than the initial wind guide angle alpha min,
wherein Ed% is in the range of 1 to 50%, and Eu% is more than or equal to 1.5 d%.
9. The control method of an air conditioner according to any one of claims 2 to 8, wherein the maximum wind guide angle α max is in a range of 75 ° to 90 ° with respect to a horizontal plane, and the initial wind guide angle α min is in a range of-30 ° to 30 ° with respect to the horizontal plane.
10. The control method of an air conditioner according to any one of claims 2 to 8,
the initial air guide angle alpha min is the air guide angle before the air conditioner enters the high-temperature sterilization mode; or
The initial air guide angle alpha min is raised by 0-30 degrees relative to the air guide angle of the air conditioner before entering the high-temperature sterilization mode; or
The initial air guide angle alpha min is the air guide angle adjusted when the air conditioner enters the high-temperature sterilization mode.
11. The control method of an air conditioner according to any one of claims 1-8, wherein the preset temperature T2b is in the range of 45 ℃ to 50 ℃.
12. The method as claimed in any one of claims 1 to 8, wherein the air conditioner includes an air conditioner main body having an air supply opening, and an air guide member rotatably provided at the air supply opening to adjust an air supply direction of the air supply opening, the air guide member being at least one of an air guide plate and an air guide louver.
13. The control method of an air conditioner according to claim 1, wherein the high-temperature sterilization mode includes:
and when the accumulated running time of the high-temperature sterilization mode reaches a first preset time, starting to judge whether the indoor heat exchanger temperature T2 is in the preset range.
14. The control method of an air conditioner according to claim 13, wherein the first predetermined period of time is not more than 20 minutes.
15. The control method of an air conditioner according to claim 13, wherein the high-temperature sterilization method further comprises:
and acquiring the outdoor environment temperature, and determining the first preset time according to the outdoor environment temperature.
16. The control method of an air conditioner according to claim 15,
if the outdoor ambient temperature is not greater than 5 ℃, the first predetermined length of time is in the range of 8 minutes to 20 minutes;
the first predetermined length of time is in the range of 5 minutes to 15 minutes if the outdoor ambient temperature is greater than 5 ℃ and not greater than 15 ℃;
the first predetermined length of time is in the range of 3 minutes to 10 minutes if the outdoor ambient temperature is greater than 15 ℃.
17. The control method of an air conditioner according to claim 1, wherein the high-temperature sterilization mode includes:
and when the high-temperature sterilization mode is entered, at least one of the rotating speed of the indoor fan, the frequency of the compressor, the opening degree of the throttling element, the rotating speed of the outdoor fan, the air guide structure and the electric auxiliary heat is adjusted to increase the temperature of the indoor heat exchanger.
18. The control method of an air conditioner according to claim 1, wherein the high-temperature sterilization mode includes:
if the duration that the indoor heat exchanger temperature T2 is lower than the lowest threshold value of the preset range is not less than a third preset time, the high-temperature sterilization mode is exited;
and if the duration that the indoor heat exchanger temperature T2 is higher than the highest threshold value of the preset range is not less than a fourth preset time, exiting the high-temperature sterilization mode.
19. The control method of an air conditioner according to claim 18,
the third predetermined length of time is in the range of 30 minutes to 90 minutes; or
The third predetermined length of time is in the range of 30 minutes to 60 minutes; or
The fourth predetermined length of time is in the range of 10 minutes to 60 minutes; or
The fourth predetermined length of time is in the range of 30 minutes to 45 minutes.
20. The control method of an air conditioner according to claim 1,
the difference value of the highest threshold value and the lowest threshold value of the preset range is not less than 0.2 ℃; or
The difference between the highest threshold and the lowest threshold of the preset range is in the range of 1 ℃ to 3 ℃.
21. The control method of an air conditioner according to claim 1,
the lowest threshold value of the preset range is in the range of 56 ℃ to 96 ℃;
the highest threshold of the preset range is in the range of 56 ℃ to 96 ℃.
22. The method as claimed in claim 21, wherein the preset range is determined according to a refrigerant type of the air conditioner, wherein,
the refrigerant is R22, and the lowest threshold value of the preset range is in the range of 56-70 ℃; or
The refrigerant is R410A, and the lowest threshold value of the preset range is in the range of 56-62 ℃; or
The refrigerant is R32, and the lowest threshold value of the preset range is in the range of 56-62 ℃; or
The refrigerant is R290, and the lowest threshold value of the preset range is within the range of 56-94 ℃; or
The refrigerant is R22, and the highest threshold value of the preset range is in the range of 56-72 ℃; or
The refrigerant is R410A, and the highest threshold value of the preset range is within the range of 56-64 ℃; or
The refrigerant is R32, and the highest threshold value of the preset range is in the range of 56-64 ℃; or
And if the refrigerant is R290, the highest threshold value of the preset range is in the range of 56-96 ℃.
23. The control method of an air conditioner according to claim 1, wherein the high-temperature sterilization method further comprises:
and recording the duration time of the high-temperature sterilization mode when the high-temperature sterilization mode is entered, and exiting the high-temperature sterilization mode if the duration time reaches a fifth preset time.
24. The control method of an air conditioner according to claim 23,
the fifth preset time is not less than 10 minutes; or
The fifth predetermined length of time is in the range of 35 minutes to 130 minutes.
25. The control method of an air conditioner according to claim 23, wherein the high-temperature sterilization method further comprises:
and acquiring the outdoor environment temperature, and determining the fifth preset time according to the outdoor environment temperature.
26. The control method of an air conditioner according to claim 25,
if the outdoor ambient temperature is not greater than 5 ℃, the fifth predetermined length of time is in the range of 50 minutes to 90 minutes;
if the outdoor ambient temperature is greater than 5 ℃ and not greater than 15 ℃, the fifth predetermined length of time is in the range of 40 minutes to 70 minutes;
the fifth predetermined period of time is in the range of 35 minutes to 50 minutes if the outdoor ambient temperature is greater than 15 ℃.
27. The control method of an air conditioner according to any one of claims 1 to 26,
when the temperature of the indoor heat exchanger reaches the protection temperature T2p, the compressor is stopped;
if the indoor heat exchanger temperature decreases to the recovery temperature T2s, the compressor is started.
28. The control method of an air conditioner according to claim 27,
if the shutdown times of the compressor reach the preset times, the high-temperature sterilization mode is exited;
and starting the compressor if the compressor is stopped once for a sixth preset time.
29. The control method of an air conditioner according to claim 28,
the predetermined number of times is not less than 0;
the predetermined number is in the range of 3 to 30; or
The sixth predetermined length of time is in the range of 0 to 30 minutes; or
The sixth predetermined period of time is in the range of 3 to 5 minutes.
30. The control method of an air conditioner according to claim 27, wherein the recovery temperature T2s is not more than 48 ℃.
31. The control method of an air conditioner according to any one of claims 1 to 29, wherein a protection temperature T2p of an indoor heat exchanger is determined according to a refrigerant type of the air conditioner, wherein,
the refrigerant is R22, and the protection temperature T2p is in the range of 68 ℃ to 73 ℃; or
The refrigerant is R410A, and the protection temperature T2p is in the range of 62 ℃ to 66 ℃; or
The refrigerant is R32, and the protection temperature T2p is in the range of 62 ℃ to 66 ℃; or
The refrigerant is R290, and the protection temperature T2p is in the range of 90-96 ℃.
32. The method as claimed in any one of claims 1 to 29, wherein the high temperature sterilization mode further includes performing an initialization process for the air conditioner when entering the high temperature sterilization mode, the initialization process including:
initializing the rotating speed of an indoor fan according to the indoor temperature T1, wherein the initial rotating speed R0 of the indoor fan is positively correlated with the indoor temperature or the initial rotating speed R0 of the indoor fan is set to be a low-grade wind speed;
initializing the rotating speed of the outdoor fan according to the outdoor temperature T4, wherein the initial rotating speed W0 of the outdoor fan is inversely related to the outdoor temperature T4;
initializing a compressor frequency according to the outdoor temperature T4, wherein the compressor initial frequency F0 is inversely related to the outdoor temperature T4;
initializing the opening degree of the throttling element according to the outdoor temperature T4, wherein the initial opening degree P0 of the throttling element is positively correlated with the outdoor temperature T4;
initializing the air guide angle of the air conditioner to a sterilization angle.
CN202010496224.1A 2020-03-13 2020-06-03 Control method of air conditioner Active CN111692723B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09229456A (en) * 1996-02-19 1997-09-05 Daikin Ind Ltd Air-conditioner and sterilization method for the air-conditioner
CN109210684A (en) * 2018-09-18 2019-01-15 珠海格力电器股份有限公司 Control the method, apparatus and air-conditioning device of air-conditioning
CN109297101A (en) * 2018-08-21 2019-02-01 珠海格力电器股份有限公司 Air conditioner method for disinfection, system and air conditioner
CN109455083A (en) * 2018-11-19 2019-03-12 福州市辰果工业设计有限公司 Heated type vehicle shutter
CN110332668A (en) * 2019-07-12 2019-10-15 宁波奥克斯电气股份有限公司 A kind of control method of heating mode, system and air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09229456A (en) * 1996-02-19 1997-09-05 Daikin Ind Ltd Air-conditioner and sterilization method for the air-conditioner
CN109297101A (en) * 2018-08-21 2019-02-01 珠海格力电器股份有限公司 Air conditioner method for disinfection, system and air conditioner
CN109210684A (en) * 2018-09-18 2019-01-15 珠海格力电器股份有限公司 Control the method, apparatus and air-conditioning device of air-conditioning
CN109455083A (en) * 2018-11-19 2019-03-12 福州市辰果工业设计有限公司 Heated type vehicle shutter
CN110332668A (en) * 2019-07-12 2019-10-15 宁波奥克斯电气股份有限公司 A kind of control method of heating mode, system and air conditioner

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