CN115585544A - Control method of air conditioner - Google Patents

Control method of air conditioner Download PDF

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Publication number
CN115585544A
CN115585544A CN202211139735.3A CN202211139735A CN115585544A CN 115585544 A CN115585544 A CN 115585544A CN 202211139735 A CN202211139735 A CN 202211139735A CN 115585544 A CN115585544 A CN 115585544A
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CN
China
Prior art keywords
compressor
electric heater
air conditioner
fan
time length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211139735.3A
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Chinese (zh)
Inventor
陈建龙
张飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202211139735.3A priority Critical patent/CN115585544A/en
Publication of CN115585544A publication Critical patent/CN115585544A/en
Pending legal-status Critical Current

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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
    • F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
    • F24F1/0093—Indoor units, e.g. fan coil units characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0373—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heating arrangements
    • F24F1/0375—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a control method of an air conditioner, the air conditioner comprises a compressor, an evaporator, a fan for promoting airflow to flow through the evaporator and an electric heater at the downstream side of the evaporator, wherein the control method of the air conditioner comprises the following steps: when the air conditioner is in a refrigeration mode or a dehumidification mode, acquiring an environment humidity value, the running frequency of the compressor and the rotating speed of the fan; determining the starting time of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan; turning on the electric heater in response to a turn-on timing of the electric heater. The control method of the air conditioner provided by the invention can prevent the electric heater in the air conditioner from generating condensation and improve the use experience of a user.

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
The electric heater is the main part of the air conditioner, and can effectively improve the heating effect. The evaporator, the fan and the electric heater are all arranged in a heat exchange air duct of the air conditioner. Under the action of the fan, the cold air in the room is heated by the electric heater and then discharged to the outside of the air conditioner. However, under the influence of the evaporator structure, the fan structure and the electric heating structure, the blown areas on the two sides of the electric heater are different, and the surface temperature of the electric heater is different. In the cooling mode or the dehumidification mode, condensation is easily generated on the surface of the electric heater due to different surface temperatures of the electric heater. With the increase of time, the condensation gradually increases, and when the condensation increases to a certain degree, the condensation can be blown out from the air conditioner, so that the user experience is influenced.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a control method of an air conditioner that overcomes or at least partially solves the above problems, and is capable of preventing an electric heater in the air conditioner from generating condensation and improving a user experience.
Specifically, the present invention provides a control method of an air conditioner including a compressor, an evaporator, a fan that causes an air flow to flow through the evaporator, and an electric heater at a downstream side of the evaporator, wherein,
the control method of the air conditioner comprises the following steps:
when the air conditioner is in a refrigeration mode or a dehumidification mode, acquiring an environment humidity value, the running frequency of the compressor and the rotating speed of the fan;
determining the starting time of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan;
turning on the electric heater in response to the turn-on timing of the electric heater.
Optionally, the method for controlling an air conditioner further includes:
recording the continuous operation time length of the compressor;
determining a target continuous operation time length of the compressor according to the environment humidity value, the operation frequency of the compressor and the rotating speed of the fan;
the turning-on timing of the electric heater is that the continuous operation period of the compressor reaches the target continuous operation period.
Optionally, the determining a target continuous operation time period of the compressor according to the environmental humidity value, the operation frequency of the compressor, and the rotation speed of the fan includes:
determining a basic time length according to the rotating speed of the fan, determining a correction time length according to the environment humidity value and the operating frequency of the compressor, and determining the target continuous operating time length to be the sum of the basic time length and the correction time length.
Optionally, the ambient humidity value is H%, the operating frequency of the compressor is F, the rotational speed of the fan is P, the base time duration is T1, the modified time duration is T2, the target continuous operation time duration is T1, and T1= D × P, T2= a/H% × B/F × C, T1= T1+ T2; wherein A, B, C and D are constants, A ranges from 0.5 to 2, B ranges from 0.5 to 2, C ranges from 5 to 20, and D ranges from 0.05 to 0.2.
Optionally, the control method of the air conditioner further includes:
determining the target continuous starting time length of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan, and recording the continuous starting time length of the electric heater;
turning off the electric heater in response to the continuous on-time of the electric heater reaching the target continuous on-time.
Optionally, determining the target continuous on-time of the electric heater according to the environmental humidity value, the operating frequency of the compressor, and the rotation speed of the fan comprises:
determining a first time length according to the environment humidity value and the running frequency of the compressor, determining a second time length according to the rotating speed of the fan, and determining the target continuous opening time length as the difference value of the first time length and the second time length.
Optionally, the ambient humidity value is H%, the operating frequency of the compressor is F, the rotational speed of the fan is P, the first duration is T3, the second duration is T4, the target continuous on duration is T2, and T3= E × H + G × F, T4= J × P, T2= T3-T4; wherein E, G and J are constants, E is 0.5 to 2, G is 0.5 to 2, J is 0.05 to 0.2.
Optionally, the control method of the air conditioner further includes:
when the electric heater is started, the air deflector of the air conditioner starts a non-blowing air supply mode, the fan is closed, and the frequency of the compressor is reduced so that the compressor runs at the frequency less than the preset frequency.
Optionally, the control method of the air conditioner further includes:
in response to turning off the electric heater, the fan is turned on;
after the fan is started for a first preset time, the air deflector and the compressor are restored to a preset state or a state before the electric heater is started.
Optionally, the preset frequency is 50HZ, and the first preset time duration is 38s to 42s; the target continuous opening time length is not more than a second preset time length.
According to the control method of the air conditioner, the starting time of the electric heater is determined according to the environmental humidity value, the running frequency of the compressor and the rotating speed of the fan so as to start the electric heater, condensation on the surface of the electric heater can be effectively prevented, and the use experience of a user is improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
A control method of an air conditioner according to an embodiment of the present invention will be described with reference to fig. 1 to 4. In the description of the present embodiments, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. When a feature "comprises or comprises" a or some of its intended features, this indicates that other features are not excluded and that other features may be further included, unless expressly stated otherwise.
Unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and "coupled" and the like are intended to be inclusive and mean, for example, that is, permanently connected, removably connected, or integral to; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to specific situations.
Further, in the description of the present embodiment, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature therebetween. That is, in the description of the present embodiment, the first feature being "on", "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is higher in level than the second feature. A first feature "under," "beneath," or "beneath" a second feature may be directly under or obliquely under the first feature, or simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiments, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention, as shown in fig. 1 and referring to fig. 2 to 4, the embodiment of the present invention provides a control method of an air conditioner including a compressor, an evaporator, a fan for causing an air flow to flow through the evaporator, and an electric heater at a downstream side of the evaporator, wherein,
as shown in fig. 1, the control method of the air conditioner includes:
step S1: when the air conditioner is in a refrigeration mode or a dehumidification mode, acquiring an environment humidity value, the running frequency of a compressor and the rotating speed of a fan;
step S2: determining the starting time of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan;
and step S3: the electric heater is turned on in response to the turn-on timing of the electric heater.
In the step S1, the ambient humidity value may be detected by a humidity sensor disposed on the indoor unit of the air conditioner, and the operating frequency of the compressor and the rotational speed of the fan may be obtained by a control device of the air conditioner.
In the step S2, the environmental humidity value, the operating frequency of the compressor, and the rotation speed of the fan all affect the condensation of the electric heater, so that the opening time of the electric heater can be determined according to the parameters, and the purpose of preventing condensation is achieved.
In the step S3, the electric heater may be a PTC electric heater, and the PTC electric heater has the advantages of high heat exchange efficiency, automatic constant temperature, energy saving, power saving, and the like. The continuous opening time of the electric heater can be set, and can also be determined according to the environmental humidity value, the running frequency of the compressor and the rotating speed of the fan.
According to the control method of the air conditioner, the starting time of the electric heater is determined according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan so as to start the electric heater, condensation on the surface of the electric heater can be effectively prevented, and the use experience of a user is improved.
In some embodiments of the present invention, as shown in fig. 2, the control method of the air conditioner further includes:
and step S4: recording the continuous operation time length of the compressor;
step S5: determining the target continuous operation time length of the compressor according to the environment humidity value, the operation frequency of the compressor and the rotating speed of the fan;
step S6: the turning-on timing of the electric heater is such that the continuous operation period of the compressor reaches the target continuous operation period.
As will be understood by those skilled in the art, the compressor drives the refrigeration system of the air conditioner to operate, the cold air continuously generated by the refrigeration system is a necessary condition for the electric heater to generate condensation, when the compressor continuously operates for a certain period of time, the surface of the electric heater will generate condensation or generate little condensation, and the period of time during which the compressor continuously operates is taken as a target continuous operation period of time. When the continuous operation time of the electric heater reaches the target continuous operation time, the electric heater needs to be started for condensation prevention treatment, and the starting time of the electric heater is the moment.
In some embodiments of the present invention, the determining the target continuous operation period of the compressor according to the ambient humidity value, the operation frequency of the compressor, and the rotation speed of the fan in step S5 includes:
step S51: determining basic time according to the rotating speed of the fan, determining correction time according to the environment humidity value and the operating frequency of the compressor, and determining target continuous operating time as the sum of the basic time and the correction time.
Specifically, the basic time duration T1= D × P, the correction time duration T2= a/H% × B/F × C, and the target continuous operation time duration T1= T1+ T2, where H% is an ambient humidity value, F is an operation frequency of the compressor, P is a rotation speed of the fan, a, B, C, and D are constants, a is in a range of 0.5 to 2, B is in a range of 0.5 to 2, C is in a range of 5 to 20, and D is in a range of 0.05 to 0.2.
In some embodiments of the present invention, as shown in fig. 3, the control method of the air conditioner further includes:
step S7: determining the target continuous opening time of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan, and recording the continuous opening time of the electric heater;
step S8: turning off the electric heater in response to the continuous on-period of the electric heater reaching the target continuous on-period.
Those skilled in the art will appreciate that the ambient humidity level, the operating frequency of the compressor and the rotational speed of the fan will affect the condensation on the surfaces of the electric heater. For example, the greater the ambient humidity value, the higher the operating frequency of the compressor and the smaller the rotation speed of the fan, the more likely the surface of the electric heater is to be dew, and thus the longer the continuous on time of the electric heater is. And the smaller the environmental humidity value is, the lower the running frequency of the compressor is, and the larger the rotating speed of the fan is, the less the surface of the electric heater is prone to condensation, so the continuous opening time of the electric heater is shorter. Therefore, the target continuous on-time of the electric heater may be determined according to the ambient humidity value, the operating frequency of the compressor, and the rotational speed of the fan.
In some embodiments of the present invention, wherein,
in step S7, determining a target continuous on-time of the electric heater according to the environment humidity value, the operating frequency of the compressor, and the rotation speed of the fan includes:
step S71: determining a first time length according to the environment humidity value and the running frequency of the compressor, determining a second time length according to the rotating speed of the fan, and determining the target continuous opening time length as the difference value between the first time length and the second time length.
Specifically, the first time duration T3= E × H + G × F, the second time duration T4= J × P, and the target continuous on time duration T2= T3-T4, where E, G, and J are constants, E ranges from 0.5 to 2, G ranges from 0.5 to 2, and J ranges from 0.05 to 0.2.
In some embodiments of the present invention, the control method of an air conditioner further includes:
step S9: when the electric heater is started, the air deflector of the air conditioner starts a non-blowing air supply mode, the fan is closed, and the frequency of the compressor is reduced so that the compressor runs at the frequency less than the preset frequency.
When the electric heater is turned on, the electric heater can generate a large amount of heat, if the fan is not turned off, hot air can be blown out of the air conditioner, the indoor temperature is increased, a user is uncomfortable, and when the hot air is directly blown to the user, the user can be scalded by the hot air, so that loss is caused. The air deflector is opened and does not blow people's air supply mode, and the angle of adjustable air deflector is blown other positions, does not directly blow people, for example blows wind upper front. Of course, the air deflector may also be closed. The frequency of the compressor is reduced, and the energy saving of the air conditioner is facilitated. For example, the compressor is operated at an operating frequency below 50 HZ. Of course, the compressor may also be turned off at this time.
In some embodiments of the present invention, as shown in fig. 4, the control method of the air conditioner further includes:
step S10: in response to turning off the electric heater, the fan is turned on;
step S11: after the fan is started for a first preset time, the air deflector and the compressor are restored to a preset state or a state before the electric heater is started.
In this embodiment, although the electric heater is turned off, a small amount of waste heat still exists, and at this time, if the air deflector and the compressor are directly restored to the preset state or the state before the electric heater is turned on, the waste heat may be blown out, and condensation may be generated when cold air and hot air generated by the refrigeration system meet. Therefore, the electric heater can be cooled by starting the fan firstly, the waste heat is dissipated, and the situation can be avoided. For example, the first preset time period for which the blower is turned on is 38s to 42s. Preferably, the first preset time period is 40s. When the fan is started for the first preset time length, the continuous operation time length of the compressor is reset, and the continuous operation time length of the compressor is recorded again.
In some embodiments of the invention, the target continuous on period is not greater than the second preset period. That is, when the target continuous opening duration calculated according to the formula is less than or equal to a second preset duration, taking the calculated value as the target continuous opening duration; and when the target continuous opening time length calculated according to the formula is greater than a second preset time length, taking the second preset time length as the target continuous opening time length. The second preset time period may be 80s to 150s, preferably 90s, 120s, etc. This is because the electric heater generates heat when being turned on, and if the air deflector is in the off state, the heat cannot be diffused, so that the inside of the air conditioner is heated and damaged. And the electric heater is too long to start, which causes electric energy waste and is not beneficial to energy saving. Therefore, the arrangement can avoid damaging the air conditioner and is beneficial to saving energy of the air conditioner.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A control method of an air conditioner including a compressor, an evaporator, a fan that causes an air flow to flow through the evaporator, and an electric heater at a downstream side of the evaporator,
the control method of the air conditioner comprises the following steps:
when the air conditioner is in a refrigeration mode or a dehumidification mode, acquiring an environment humidity value, the running frequency of the compressor and the rotating speed of the fan;
determining the starting time of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan;
turning on the electric heater in response to the turn-on timing of the electric heater.
2. The control method of an air conditioner according to claim 1, further comprising:
recording the continuous operation time length of the compressor;
determining a target continuous operation duration of the compressor according to the environment humidity value, the operation frequency of the compressor and the rotating speed of the fan;
the turning-on timing of the electric heater is that the continuous operation period of the compressor reaches the target continuous operation period.
3. The control method of an air conditioner according to claim 2,
determining a target continuous operation duration of the compressor according to the ambient humidity value, the operating frequency of the compressor, and the rotational speed of the fan comprises:
determining a basic time length according to the rotating speed of the fan, determining a correction time length according to the environment humidity value and the operating frequency of the compressor, and determining the target continuous operating time length as the sum of the basic time length and the correction time length.
4. The control method of an air conditioner according to claim 3, wherein,
the environment humidity value is H%, the running frequency of the compressor is F, the rotating speed of the fan is P, the basic time length is T1, the correction time length is T2, the target continuous running time length is T1, and T1= D × P, T2= A/H% × B/F × C, and T1= T1+ T2; wherein A, B, C and D are constants, A is 0.5-2, B is 0.5-2, C is 5-20, and D is 0.05-0.2.
5. The control method of an air conditioner according to claim 1, further comprising:
determining the target continuous starting time length of the electric heater according to the environment humidity value, the running frequency of the compressor and the rotating speed of the fan, and recording the continuous starting time length of the electric heater;
turning off the electric heater in response to the continuous on-time of the electric heater reaching the target continuous on-time.
6. The control method of an air conditioner according to claim 5, wherein,
determining a target continuous on-time of the electric heater according to the ambient humidity value, the operating frequency of the compressor, and the rotational speed of the fan includes:
determining a first time length according to the environment humidity value and the running frequency of the compressor, determining a second time length according to the rotating speed of the fan, and determining the target continuous opening time length as the difference value of the first time length and the second time length.
7. The control method of an air conditioner according to claim 6, wherein,
the ambient humidity value is H%, the operating frequency of the compressor is F, the rotation speed of the fan is P, the first time duration is T3, the second time duration is T4, the target continuous opening time duration is T2, and T3= E × H + G × F, T4= J × P, T2= T3-T4; wherein E, G and J are constants, E is 0.5 to 2, G is 0.5 to 2, J is 0.05 to 0.2.
8. The control method of an air conditioner according to claim 5, further comprising:
when the electric heater is started, the air deflector of the air conditioner starts a non-blowing air supply mode, the fan is closed, and the frequency of the compressor is reduced so that the compressor runs at the frequency smaller than the preset frequency.
9. The control method of an air conditioner according to claim 8, further comprising:
in response to turning off the electric heater, the fan is turned on;
after the fan is started for a first preset time, the air deflector and the compressor are restored to a preset state or a state before the electric heater is started.
10. The control method of an air conditioner according to claim 9, wherein,
the preset frequency is 50HZ, and the first preset time length is 38 s-42 s;
the target continuous opening time length is not more than a second preset time length.
CN202211139735.3A 2022-09-19 2022-09-19 Control method of air conditioner Pending CN115585544A (en)

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Application Number Priority Date Filing Date Title
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