CN114110972B - Fixed-frequency air conditioner, control method and control device thereof and readable storage medium - Google Patents

Fixed-frequency air conditioner, control method and control device thereof and readable storage medium Download PDF

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Publication number
CN114110972B
CN114110972B CN202010904770.4A CN202010904770A CN114110972B CN 114110972 B CN114110972 B CN 114110972B CN 202010904770 A CN202010904770 A CN 202010904770A CN 114110972 B CN114110972 B CN 114110972B
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temperature
air conditioner
rotating speed
frequency air
fixed
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CN114110972A (en
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张经卫
杨俊�
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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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    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F24F11/67—Switching between heating and cooling modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a fixed-frequency air conditioner control method, which comprises the following steps: acquiring a temperature characteristic parameter of an indoor environment; the temperature characteristic parameters comprise the temperature difference between the indoor environment temperature and the set temperature and the temperature difference variation of the temperature difference in the set time length; the set temperature is the target temperature of the operation of the fixed-frequency air conditioner; when the temperature difference is larger than or equal to the set temperature difference, and the temperature difference variable quantity is smaller than or equal to the set value, the indoor fan is controlled to increase the running rotating speed. The invention also discloses a fixed-frequency air conditioner control device, a fixed-frequency air conditioner and a readable storage medium. The invention aims to improve the indoor heat exchange effect of the constant-frequency air conditioning degree so as to ensure the comfort of indoor environment users.

Description

Fixed-frequency air conditioner, control method and control device thereof and readable storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fixed-frequency air conditioner control method, a fixed-frequency air conditioner control device, a fixed-frequency air conditioner and a readable storage medium.
Background
Currently, air conditioners may be classified into a variable frequency air conditioner and a fixed frequency air conditioner. The rotating speed of a compressor of the fixed-frequency air conditioner is basically unchanged, the rotating speed of a fan and the angle of an air guide strip generally operate according to set parameters, and the indoor temperature is adjusted by means of continuous starting and stopping of the compressor. However, the problem that the output capacity of the air conditioner is not matched with the indoor actual load easily exists in such a mode, the indoor heat exchange effect of the fixed-frequency air conditioner is not good, the indoor temperature cannot reach the set temperature, and the comfort of a user is affected.
Disclosure of Invention
The invention mainly aims to provide a constant-frequency air conditioner control method, aiming at improving the indoor heat exchange effect of the constant-frequency air conditioner so as to ensure the comfort of users in the indoor environment.
In order to achieve the above object, the present invention provides a control method for a fixed-frequency air conditioner, which comprises the following steps:
acquiring a temperature characteristic parameter of an indoor environment; the temperature characteristic parameters comprise the temperature difference between the indoor environment temperature and the set temperature and the temperature difference variation of the temperature difference in the set time length; the set temperature is the target temperature of the operation of the fixed-frequency air conditioner;
and when the temperature difference is greater than or equal to the set temperature difference and the temperature difference variable quantity is less than or equal to the set value, controlling the indoor fan to increase the running rotating speed.
Optionally, the step of controlling the indoor fan to increase the operation speed includes:
controlling the indoor fan to increase to a set maximum rotating speed for operation;
when the indoor fan runs at the set maximum rotating speed to reach the target time, controlling the indoor fan to run at a second rotating speed;
the rotating speed of the indoor fan before the rotating speed is increased is defined as a first rotating speed, the set maximum rotating speed and the second rotating speed are both greater than the first rotating speed, and the second rotating speed is less than the set maximum rotating speed.
Optionally, before the step of controlling the indoor fan to operate at the second rotation speed when the indoor fan operates at the set maximum rotation speed to reach the target length, the method further includes:
and determining the target duration according to the temperature difference, wherein the target duration is in an increasing trend along with the increase of the temperature difference.
Optionally, before the step of controlling the indoor fan to operate at the second rotation speed, the method further includes:
when the indoor fan runs at the set maximum rotating speed to reach the target length, acquiring the current third rotating speed of the outdoor fan and the first coil temperature of the indoor heat exchanger;
determining a reference rotating speed adjusting parameter according to the first rotating speed and the set maximum rotating speed, and determining a correction parameter according to the third rotating speed and the first coil temperature;
determining a target rotating speed adjusting parameter according to the reference rotating speed adjusting parameter and the correction parameter;
and determining the second rotating speed according to the set maximum rotating speed and the target rotating speed adjusting parameter.
Optionally, before the step of controlling the indoor fan to increase the operating speed, the method further includes:
when the temperature difference is larger than or equal to a set temperature difference and the temperature difference variation is smaller than or equal to a set value, acquiring the temperature of a second coil of the indoor heat exchanger;
and when the temperature of the second coil pipe meets the set temperature condition of the fixed-frequency air conditioner in the current heat exchange operation state, executing the step of controlling the indoor fan to increase the operation rotating speed.
Optionally, after the step of obtaining the temperature of the second coil of the indoor heat exchanger, the method further includes:
determining a target air guide position of an air guide strip of the fixed-frequency air conditioner according to the temperature of the second coil;
and controlling the air guide strips to guide air according to the air guide positions.
Optionally, the step of determining a target air guiding position of an air guiding strip of the fixed-frequency air conditioner according to the temperature of the second coil includes:
when the temperature of the second coil pipe meets the set temperature condition of the fixed-frequency air conditioner in the current heat exchange operation state, setting the target air guide position as a first air guide position;
the air flow direction in an air duct of the fixed-frequency air conditioner before passing through the air guide strips is defined as a reference direction, an included angle between the air guide strips corresponding to the first air guide positions and the reference direction is defined as a first air guide angle, and the first air guide angle is smaller than or equal to a set angle threshold.
Optionally, the step of determining a target air guiding position of an air guiding strip of the fixed-frequency air conditioner according to the temperature of the second coil further includes:
when the temperature of the second coil pipe does not meet the set temperature condition in the current heat exchange running state of the fixed-frequency air conditioner and the current heat exchange running state of the fixed-frequency air conditioner is heating running, setting the target air guide position as a second air guide position;
and defining an included angle between the air guide strip corresponding to the second air guide position and the reference direction as a second air guide angle, wherein the second air guide angle is larger than the set angle threshold.
Optionally, before the step of setting the target wind guiding position as the second wind guiding position, the method further includes:
determining an amount of deviation between the second coil temperature and a set temperature threshold; the set temperature threshold is a temperature threshold corresponding to the set temperature condition when the heat exchange operation state of the fixed-frequency air conditioner is heating operation;
determining a position adjusting parameter according to the deviation amount;
determining the second air guide position according to the first air guide position and the position adjusting parameter;
wherein a positional deviation between the second wind guiding position and the first wind guiding position increases as the deviation amount increases.
Optionally, the method for controlling a fixed-frequency air conditioner further includes:
when the indoor environment temperature is higher than the set temperature and the set temperature is lower than or equal to a first threshold value, determining that the current heat exchange running state of the fixed-frequency air conditioner is refrigeration running;
and when the indoor environment temperature is lower than the set temperature and the set temperature is greater than or equal to a second threshold value, determining that the current heat exchange operation state of the fixed-frequency air conditioner is heating operation.
Optionally, after the step of obtaining the temperature of the second coil of the indoor heat exchanger, the method further includes:
when the current heat exchange running state of the fixed-frequency air conditioner is refrigeration running, if the temperature of the second coil is smaller than or equal to a first set temperature threshold value, determining that the temperature of the second coil meets the set temperature condition;
when the current heat exchange running state of the fixed-frequency air conditioner is refrigeration running, if the temperature of the second coil is greater than the first set temperature threshold value, determining that the temperature of the second coil does not meet the set temperature condition;
when the current heat exchange operation state of the fixed-frequency air conditioner is heating operation, if the temperature of the second coil is greater than or equal to a second set temperature threshold value, determining that the temperature of the second coil meets the set temperature condition;
when the current heat exchange operation state of the fixed-frequency air conditioner is heating operation, if the temperature of the second coil is smaller than a second set temperature threshold value, determining that the temperature of the second coil does not meet the set temperature condition;
wherein the first set temperature threshold is less than the second set temperature threshold.
In order to achieve the above object, the present application also provides a constant-frequency air conditioning control device including: the constant-frequency air conditioner control method comprises a memory, a processor and a constant-frequency air conditioner control program which is stored on the memory and can run on the processor, wherein the constant-frequency air conditioner control program realizes the steps of the constant-frequency air conditioner control method according to any one of the above items when being executed by the processor.
In addition, in order to achieve the above object, the present application also proposes a fixed-frequency air conditioner including the fixed-frequency air conditioner control device as described above.
In addition, in order to achieve the above object, the present application also proposes a readable storage medium having stored thereon a fixed-frequency air conditioning control program, which when executed by a processor, implements the steps of the fixed-frequency air conditioning control method according to any one of the above.
The invention provides a control method of a fixed-frequency air conditioner, which indicates that the indoor environment temperature does not reach the target temperature of the operation of the air conditioner when the temperature difference between the indoor environment temperature and the set temperature is too large and the variation of the temperature difference within the set time is small, but the current output capacity of the air conditioner can not obviously increase or decrease the room temperature, at the moment, an indoor fan does not operate at the set rotating speed any more, but the cold quantity and the heat quantity which are transmitted to the indoor environment by the fixed-frequency air conditioner are increased by increasing the operating rotating speed of the indoor fan, so that the improvement of the heat exchange effect of the fixed-frequency air conditioner to the indoor is realized, and the room temperature can quickly approach the set temperature after the wind speed of the fixed-frequency air conditioner is increased, so that the comfort of users in the indoor environment is ensured.
Drawings
FIG. 1 is a schematic diagram of a hardware configuration involved in the operation of an embodiment of the constant-frequency air conditioner control device according to the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of a fixed-frequency air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a detailed process of the step of controlling the indoor fan to increase the operating speed in FIG. 2;
FIG. 4 is a schematic flow chart illustrating a method for controlling a fixed-frequency air conditioner according to another embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating a constant-frequency air conditioner control method according to another embodiment of the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring a temperature characteristic parameter of an indoor environment; the temperature characteristic parameters comprise the temperature difference between the indoor environment temperature and the set temperature and the temperature difference variation of the temperature difference in the set time length; the set temperature is a target temperature for the operation of the fixed-frequency air conditioner; when the temperature difference is larger than or equal to the set temperature difference, and the temperature difference variable quantity is smaller than or equal to the set value, the indoor fan is controlled to increase the running rotating speed.
In the prior art, the rotating speed of a compressor of the fixed-frequency air conditioner is basically unchanged, the rotating speed of a fan and the angle of an air guide strip generally operate according to set parameters, and the indoor temperature is adjusted by means of continuous starting and stopping of the compressor. However, the problem that the output capacity of the air conditioner is not matched with the indoor actual load easily exists in such a mode, the indoor heat exchange effect of the fixed-frequency air conditioner is not good, the indoor temperature cannot reach the set temperature, and the comfort of a user is affected.
The invention provides the solution, and aims to improve the indoor heat exchange effect of the constant-frequency air conditioning degree so as to ensure the comfort of users in the indoor environment.
The embodiment of the invention provides a fixed-frequency air conditioner which specifically comprises a shell, an indoor fan, a compressor and an indoor heat exchanger. Wherein, the casing is internally provided with an air duct, the casing is provided with an air outlet and an air return inlet which are communicated with the air duct, and the indoor fan and the indoor heat exchanger are both arranged in the air duct. The compressor is connected with the indoor heat exchanger through a refrigerant pipeline. When the fixed-frequency air conditioner is started, the compressor runs at a fixed rotating speed. Air in the indoor environment enters the air channel from the air return opening to exchange heat with the indoor heat exchanger, and the air after heat exchange is blown into the indoor environment from the air outlet under the airflow disturbance action of the indoor fan.
Furthermore, an air outlet of the fixed-frequency air conditioner is also provided with an air guide strip for regulating and controlling the air outlet direction of the fixed-frequency air conditioner. Specifically, in this embodiment, the air guide strip is an air guide member for regulating and controlling the upper and lower air outlet directions of the fixed-frequency air conditioner. In other embodiments, the air guide strip can also be an air guide member used for regulating and controlling the left and right air outlet directions of the fixed-frequency air conditioner.
Further, the fixed-frequency air conditioner may further include a temperature sensor. The temperature sensor can be arranged at the air return opening and used for detecting the indoor environment temperature. In addition, in other embodiments, the temperature sensor for detecting the indoor ambient temperature may also be provided independently of the fixed-frequency air conditioner.
The embodiment of the invention also provides a fixed-frequency air conditioner control device which can be applied to control the fixed-frequency air conditioner. The fixed-frequency air conditioner control device can be arranged in the fixed-frequency air conditioner or arranged outside the air conditioner independently of the fixed-frequency and fixed-frequency air conditioner.
In an embodiment of the present invention, referring to fig. 1, a constant-frequency air conditioner control device includes: a processor 1001 (e.g., CPU), memory 1002, etc. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
The processor 1001 is connected to the indoor fan 1, the drive mechanism 2 for the air guide bar, the temperature sensor 3, and the memory 1002 in the fixed-frequency air conditioner. The processor 1001 may be used to control the operation of the indoor fan 1 and the driving mechanism 2 of the wind guide bar. The processor 1001 may acquire data detected by the temperature sensor 3 to obtain the indoor ambient temperature.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1002, which is a readable storage medium, may include a fixed-frequency air conditioner control program therein. In the apparatus shown in fig. 1, the processor 1001 may be configured to call a fixed-frequency air-conditioning control program stored in the memory 1002, and perform operations of the steps related to the fixed-frequency air-conditioning control method in the following embodiments.
The embodiment of the invention also provides a fixed-frequency air conditioner control method which is applied to control the operation of the fixed-frequency air conditioner.
Referring to fig. 2, an embodiment of a constant-frequency air conditioner control method according to the present application is provided. In this embodiment, the method for controlling a fixed-frequency air conditioner includes:
s10, acquiring a temperature characteristic parameter of an indoor environment; the temperature characteristic parameters comprise the temperature difference between the indoor environment temperature and the set temperature and the temperature difference variation of the temperature difference in the set time length; the set temperature is the target temperature of the operation of the fixed-frequency air conditioner;
the temperature difference specifically refers to an absolute value of a difference between the indoor ambient temperature and the set temperature. The temperature difference change amount refers to the change amplitude of the temperature difference within a set time length. The data acquired in real time by the temperature sensor arranged in the indoor environment is acquired and used as the indoor environment temperature. The set temperature can be set by a user according to the self thermal comfort requirement, and the set temperature is obtained by obtaining the set parameters of the user.
The process of acquiring the temperature characteristic parameter of the indoor environment comprises the following steps: the method comprises the steps of continuously collecting the indoor environment temperature in the running process of the fixed-frequency air conditioner, determining the temperature difference between the currently collected indoor environment temperature and the set temperature, and determining the variation of the temperature difference in the set time. The set time length specifically takes the current time as the end time of timing, and the time which is separated from the current time by the set time length is defined as the starting time of timing. Specifically, a temperature difference Δ T1 between the indoor ambient temperature and the set temperature difference at the starting time and a temperature difference Δ T2 between the indoor ambient temperature and the set temperature at the current time may be obtained, where the set duration is defined as M, and the amount of change in temperature difference is | Δ T1- Δ T2 |. In addition, the temperature difference delta T3 between a plurality of indoor environment temperatures and the set temperature from the starting time to the current time can be acquired, the deviation amount between the temperature differences corresponding to any two adjacent indoor environment temperatures at the collecting time can be determined, at least two deviation amounts are obtained, and the average value of the at least two deviation amounts is used as the temperature deviation amount; or the deviation between the maximum value and the minimum value among the plurality of Δ T3 is taken as the temperature deviation amount here.
The length of the set duration can be set according to actual requirements. In this embodiment, the set time period is specifically 20min. In other embodiments, the set time period may also be set to be shorter or longer, such as 10min, 30min, etc., as desired.
Specifically, after the fixed-frequency air conditioner is powered on, the operation duration of the compressor is obtained, and when the operation duration is greater than or equal to a preset duration (for example, 10 min), the step S10 is executed.
And S20, when the temperature difference is greater than or equal to a set temperature difference and the temperature difference variation is less than or equal to a set value, controlling the indoor fan to increase the running rotating speed.
The set temperature difference is specifically a parameter for distinguishing the degree of deviation between the current indoor ambient temperature and the user comfort requirement. The temperature difference is larger than or equal to the set temperature difference, which indicates that the current indoor environment temperature is seriously deviated from the user comfort requirement, and the temperature difference is smaller than the set temperature difference, which indicates that the current indoor environment temperature is closer to the user comfort requirement.
The set value is specifically a parameter for distinguishing a variation trend of a degree of deviation of the current indoor ambient temperature from the user comfort demand. If the temperature difference variation is smaller than or equal to the set value, the deviation degree of the current indoor environment temperature and the comfort requirement of the user hardly changes along with the time, which indicates that the indoor environment temperature changes little; if the temperature variation is larger than the set value, the deviation degree of the current indoor environment temperature and the comfort requirement of the user is larger along with the variation range of time, and the change of the indoor environment temperature is more obvious.
When the temperature difference is larger than or equal to the set temperature difference and the temperature difference variation is smaller than or equal to the set value, the current heat exchange effect of the fixed-frequency air conditioner is poor, the indoor environment temperature far fails to meet the comfort requirement of a user but cannot approach the comfort requirement of the user, and at the moment, the indoor fan is increased to a higher rotating speed so as to increase the heat exchange amount currently input into the indoor environment by the fixed-frequency air conditioner.
Specifically, the increased rotating speed of the indoor fan may be a fixed rotating speed or a variable rotating speed. The rotating speed of the indoor fan after being increased can be configured in advance or determined according to the current actual running condition of the fixed-frequency air conditioner. The rotating speed of the indoor fan after being increased can be the maximum rotating speed allowed by the indoor fan to operate, and the rotating speed of the indoor fan after being increased can also be any rotating speed which is larger than the current rotating speed and smaller than the maximum rotating speed allowed by the indoor fan to operate.
The method for controlling the fixed-frequency air conditioner provided by the embodiment of the invention has the advantages that when the temperature difference between the indoor environment temperature and the set temperature is too large and the variation of the temperature difference within the set time is small, the method indicates that the indoor environment temperature does not reach the target temperature of the air conditioner operation, but the current output capacity of the air conditioner cannot enable the room temperature to be obviously increased or decreased, at the moment, the indoor fan does not operate at the set rotating speed any more, but the cold quantity and the heat quantity transmitted to the indoor environment by the fixed-frequency air conditioner are increased by increasing the operating rotating speed of the indoor fan, so that the improvement of the heat exchange effect of the fixed-frequency air conditioner on the room is realized, the room temperature can quickly approach the set temperature after the wind speed of the fixed-frequency air conditioner is increased, and the comfort of users in the indoor environment is ensured.
Specifically, referring to fig. 3, the step of controlling the indoor fan to increase the operation speed in step S20 includes:
s21, controlling the indoor fan to increase to a set maximum rotating speed for operation;
the set maximum rotating speed specifically refers to the maximum rotating speed allowed by the indoor fan to operate, and is a preset parameter.
S22, when the indoor fan runs at the set maximum rotating speed to reach the target length, controlling the indoor fan to run at a second rotating speed; the rotating speed of the indoor fan before the rotating speed is increased is defined as a first rotating speed, the set maximum rotating speed and the second rotating speed are both greater than the first rotating speed, and the second rotating speed is less than the set maximum rotating speed.
The target duration may be a preset parameter, or a parameter determined according to the actual operation condition of the fixed-frequency air conditioner. In the embodiment, the target time length is determined according to the temperature difference between the determined indoor environment temperature and the set temperature, different temperature differences correspond to different target time lengths, and the target time length is increased along with the increase of the temperature difference. The corresponding relationship between the temperature difference and the target duration can be established in advance, and can be in the forms of calculation relationship, mapping relationship and the like. For example, in the corresponding relationship, the intervals of different temperature differences may be set with different target durations correspondingly, and if the intervals of the temperature differences are different, the corresponding target durations are different; alternatively, in the corresponding relationship, a calculation formula may be used between the temperature difference and the target time duration, and the target time duration obtained by calculation is different when the temperature difference is different.
The second rotating speed can be determined according to the first rotating speed and the set maximum rotating speed, any rotating speed between the first rotating speed and the set maximum rotating speed can be used as the second rotating speed, and the second rotating speed can also be determined according to the actual running condition of the constant-frequency air conditioner in combination with the first rotating speed and/or the set maximum rotating speed.
In the embodiment, in the process of increasing the rotating speed of the indoor fan, the indoor fan is controlled to operate at the maximum rotating speed for a period of time, and then operates at a rotating speed which is lower than the original rotating speed, so that the heat or cold in the fixed-frequency air conditioner is rapidly released to the indoor space through the maximum rotating speed, and the heat exchange effect of the fixed-frequency air conditioner on the indoor environment is rapidly improved; because the heat exchange effect of the indoor heat exchanger can be influenced by long-time operation at the maximum rotating speed, after a period of time, the rotating speed of the indoor fan is properly reduced, the effective heat exchange of the indoor heat exchanger to air is ensured by the rotating speed of the indoor fan, and meanwhile, the rotating speed is matched with the improvement of the original rotating speed, so that the heat exchange effect of the fixed-frequency air conditioner to the indoor environment is effectively improved.
Specifically, the second rotation speed is determined before the indoor fan is controlled to operate at the second rotation speed. The process of determining the second rotational speed specifically includes:
step S201, when the indoor fan runs at the set maximum rotating speed to reach the target long time, acquiring the current third rotating speed of the outdoor fan and the first coil temperature of the indoor heat exchanger;
the first coil temperature is obtained by acquiring data detected by a temperature sensor on the indoor heat exchanger.
Step S202, determining a reference rotating speed adjusting parameter according to the first rotating speed and the set maximum rotating speed, and determining a correction parameter according to the third rotating speed and the first coil temperature;
specifically, the deviation amount between the set maximum rotation speed and the first rotation speed may be used as the reference rotation speed adjustment parameter. The correction parameter specifically refers to a correction width and/or a correction ratio of the reference rotation speed adjustment width.
Based on the above, the corresponding relationship between the rotation speed of the outdoor fan, the coil temperature of the indoor heat exchanger and the correction parameter can be pre-established, and can be a calculation relationship, a mapping relationship and the like. And determining a correction proportion or a correction amplitude corresponding to the current third rotating speed and the first coil temperature based on the corresponding relation to serve as a correction parameter. For example, defining the third rotation speed as N, the first coil temperature as T, and when the correction parameter is a correction amplitude, the correction amplitude D = N × D 1 +T*d 2 In which d is 1 And d 2 The parameters are preset fixed parameters; when the correction parameter is a correction ratio, the correction ratio D = (N + T + a) = D, where a and D are fixed parameters set in advance.
Step S203, determining a target rotating speed adjusting parameter according to the reference rotating speed adjusting parameter and the correction parameter;
the target rotation speed adjustment parameter specifically refers to setting a quantitative relationship between the maximum rotation speed and the second rotation speed. The target rotation speed adjustment parameter is smaller than the reference rotation speed adjustment parameter.
And correcting the obtained correction parameter corresponding to the reference rotating speed adjustment parameter to obtain a target rotating speed adjustment parameter. Specifically, when the reference rotation speed adjustment parameter is defined as A and the correction parameter D is the correction amplitude, the target rotation speed adjustment parameter A is defined 1 = A-D; when the correction parameter D is a correction ratio, the target rotation speed adjustment parameter A 1 ＝A*D。
And step S204, determining the second rotating speed according to the set maximum rotating speed and the target rotating speed adjusting parameter.
Specifically, the second rotation speed is obtained after the target rotation speed adjustment parameter adjusts the set maximum rotation speed. Specifically, a reference rotation speed adjustment parameter is defined as N, and a correction parameter A is defined as 1 For amplitude correction, the second speed N 1 ＝N-A 1 (ii) a Correction parameter A 1 For correcting the ratio, the second speed N1= N × a 1 。
Different third rotation speeds and different first coil temperatures correspond to different correction parameters. When the reference rotating speed adjusting parameter and the first coil temperature are fixed, the larger the third rotating speed is, the larger the second rotating speed correspondingly obtained based on the correction parameter is, and vice versa; when the reference rotating speed adjusting parameter and the third rotating speed are fixed, the larger the temperature of the first coil pipe is, the larger the second rotating speed obtained correspondingly based on the correction parameter is, and vice versa.
In this embodiment, by the above manner, the maximum rotation speed and the original first rotation speed are set in combination with the rotation speed of the outdoor fan and the temperature of the indoor coil to determine the second rotation speed of the indoor fan, so that it is ensured that the determined second rotation speed is greater than the original first rotation speed and less than the set maximum rotation speed, and meanwhile, the determined second rotation speed can be matched with the current operation conditions of the indoor fan and the indoor heat exchanger, so that the heat exchange effect of the fixed-frequency air conditioner on the indoor environment is improved, and the fixed-frequency air conditioner can be ensured to be in better energy efficiency.
Further, based on the above embodiment, another embodiment of the control method of the fixed-frequency air conditioner of the present application is provided. In this embodiment, referring to fig. 4, step S30 specifically includes:
step S31, when the temperature difference is larger than or equal to a set temperature difference and the temperature difference variable quantity is smaller than or equal to a set value, acquiring the temperature of a second coil of the indoor heat exchanger;
and S32, when the temperature of the second coil pipe meets the set temperature condition of the fixed-frequency air conditioner in the current heat exchange running state, executing the step of controlling the indoor fan to increase the running rotating speed.
The heat exchange operation state specifically includes heating operation and cooling operation. Different heat exchange operation states correspond to different set temperature conditions. The set temperature condition is specifically a temperature condition for judging whether the temperature of the coil of the indoor heat exchanger can realize effective heat exchange for the air of the indoor environment. The temperature of the second coil pipe meets the set temperature condition, which indicates that the current indoor heat exchanger can effectively exchange heat for air; the temperature of the second coil pipe does not meet the set temperature condition, and the fact that the current indoor heat exchanger cannot effectively exchange heat with air is indicated.
Specifically, when the current heat exchange operation state of the fixed-frequency air conditioner is refrigeration operation, if the temperature of the second coil is less than or equal to a first set temperature threshold, it is determined that the temperature of the second coil meets the set temperature condition; when the current heat exchange running state of the fixed-frequency air conditioner is refrigeration running, if the temperature of the second coil is greater than the first set temperature threshold value, determining that the temperature of the second coil does not meet the set temperature condition; when the current heat exchange operation state of the fixed-frequency air conditioner is heating operation, if the temperature of the second coil is greater than or equal to a second set temperature threshold value, determining that the temperature of the second coil meets the set temperature condition; when the current heat exchange operation state of the fixed-frequency air conditioner is heating operation, if the temperature of the second coil is smaller than a second set temperature threshold value, determining that the temperature of the second coil does not meet the set temperature condition; wherein the first set temperature threshold is less than the second set temperature threshold. Based on this, when the air conditioner heats, indoor heat exchanger temperature is enough high, perhaps, when the air conditioner refrigerates, indoor heat exchanger temperature is enough low, just improves indoor fan rotational speed, guarantees to have sufficient cold volume or heat to send into indoorly under the effect that the wind speed of indoor fan improves to realize the effective improvement of fixed frequency air conditioner to indoor environment heat transfer effect, avoid indoor fan rotational speed unnecessary to improve and influence indoor heat exchanger's heat transfer effect on the contrary.
When the indoor environment temperature is higher than the set temperature and the set temperature is lower than or equal to a first threshold value, determining that the current heat exchange operation state of the fixed-frequency air conditioner is refrigeration operation; and when the indoor environment temperature is lower than the set temperature and the set temperature is greater than or equal to a second threshold value, determining that the current heat exchange operation state of the fixed-frequency air conditioner is heating operation. The first set temperature threshold is smaller than the first threshold, and the second set temperature threshold is larger than the second threshold, so that the heat exchange efficiency of the indoor heat exchanger to indoor ambient air is ensured. The current heat exchange state of the fixed-frequency air conditioner is accurately acquired based on the relation between the indoor environment temperature and the target temperature.
The first set temperature threshold, the second set temperature threshold, and the specific size of the first threshold and the second threshold can be set according to actual requirements. Specifically, in this embodiment, the first threshold is specifically 25 degrees, and the second threshold is specifically 26 degrees.
Further, based on any of the above embodiments, another embodiment of the control method for a fixed-frequency air conditioner is provided. In this embodiment, referring to fig. 5, after step S31, the method further includes:
step S33, determining a target air guide position of an air guide strip of the fixed-frequency air conditioner according to the temperature of the second coil;
the target air guide positions corresponding to different temperatures of the second coil pipe are different. When the air conditioner is in heating operation, the higher the temperature of the second coil is, the larger the air output corresponding to the target air guide position is, and the lower the temperature of the second coil is, the smaller the air output corresponding to the target air guide position is; when the air conditioner operates in a refrigerating mode, the lower the temperature of the second coil pipe is, the larger the air output corresponding to the target air guide position is, and the higher the temperature of the second coil pipe is, the smaller the air output corresponding to the target air guide position is.
And step S34, controlling the air guide strips to guide air according to the air guide positions.
Through the steps S33 and S34, it can be ensured that the position of the air guide strip can be matched with the operating state of the indoor fan, and the improvement of the indoor heat exchange effect of the fixed-frequency air conditioner is realized. The sequence of execution of step S33, step S34 and step S32 is not particularly limited.
Specifically, when the temperature of the second coil pipe meets the set temperature condition in the current heat exchange running state of the fixed-frequency air conditioner, the target air guide position is set as a first air guide position; the air flow direction in an air duct of the fixed-frequency air conditioner before passing through the air guide strips is defined as a reference direction, an included angle between the air guide strips corresponding to the first air guide positions and the reference direction is defined as a first air guide angle, and the first air guide angle is smaller than or equal to a set angle threshold.
The set angle threshold value can be set according to the actual conditions (such as the height and the shape of the air outlet of the fixed-frequency air conditioner, the wind shielding position of a plugging piece of the air outlet, the air duct structure parameters in the air conditioner and the like). The set angle threshold may specifically be less than or equal to 30 degrees. In this embodiment, the first wind guiding position corresponds to a first wind guiding angle, which is specifically 0 degree. In other embodiments, the first air guiding angle corresponding to the first air guiding position may also be set to 5 degrees, 10 degrees, or the like according to actual requirements.
Here, when second coil pipe temperature satisfied the settlement temperature condition, except improving indoor fan, still with the adjustment of wind-guiding strip to first wind-guiding position, realize the maximize of fixed frequency air conditioner air output through the cooperation of indoor fan and wind-guiding strip to further improve indoor environment's heat transfer effect.
When the temperature of the second coil pipe does not meet the set temperature condition in the current heat exchange running state of the fixed-frequency air conditioner and the current heat exchange running state of the fixed-frequency air conditioner is heating running, setting the target air guide position as a second air guide position; and defining an included angle between the air guide strip corresponding to the second air guide position and the reference direction as a second air guide angle, wherein the second air guide angle is larger than the set angle threshold. When the air guide strip is at the second air guide position, the air guide strip can block the air flow blowing into the room in the air duct. Specifically, in the present embodiment, a direction perpendicular to the reference direction is set as the second wind guiding angle. When the air conditioner heat exchange moves, through adjusting the wind guide strip to the second wind guide position, this position can block to a certain extent that the lower air of temperature blows in the air conditioner indoor, goes out cold wind when effectively avoiding the air conditioner to heat the operation, guarantees the thermal comfort of indoor environment.
When the temperature of the second coil pipe does not meet the set temperature condition in the current heat exchange running state of the fixed-frequency air conditioner and the current heat exchange running state of the fixed-frequency air conditioner is in refrigerating running, the target air guide position can be set to be the second air guide position, can also be set to be the first air guide position, and can even be set to be other air guide positions. Specifically, when the target air guide position is set to be the first air guide position, the fixed-frequency air conditioner can quickly send air with the temperature lower than the indoor environment temperature into the room, so that the indoor environment can be quickly cooled.
In other embodiments, the second wind guiding position may be determined according to actual conditions. The process of determining the second wind guiding position may specifically be as follows: determining an amount of deviation between the second coil temperature and a set temperature threshold; the set temperature threshold is a temperature threshold corresponding to the set temperature condition when the heat exchange operation state of the fixed-frequency air conditioner is heating operation, such as the second set temperature threshold; determining a position adjusting parameter according to the deviation amount; determining the second air guide position according to the first air guide position and the position adjusting parameter; wherein a positional deviation between the second wind guiding position and the first wind guiding position increases as the deviation amount increases. Here, confirm the second wind-guiding position through this mode to guarantee that the second coil pipe temperature is closer to the required settlement temperature threshold value of heating, the effect of blockking of wind-guiding strip to air current in the wind channel is less, and then the air output of air outlet is bigger, thereby realize that the air conditioner heats the indoor environment fast, further improves the effect of heating of fixed frequency air conditioner to the indoor environment.
In addition, an embodiment of the present invention further provides a readable storage medium, where the readable storage medium stores a constant-frequency air conditioner control program, and when the constant-frequency air conditioner control program is executed by a processor, the readable storage medium implements relevant steps of any embodiment of the above constant-frequency air conditioner control method.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a fixed-frequency air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (12)

1. A control method of a fixed-frequency air conditioner is characterized by comprising the following steps:
acquiring a temperature characteristic parameter of an indoor environment; the temperature characteristic parameters comprise the temperature difference between the indoor environment temperature and the set temperature and the temperature difference variation of the temperature difference in the set time length; the set temperature is the target temperature of the operation of the fixed-frequency air conditioner; and
when the temperature difference is greater than or equal to a set temperature difference and the temperature difference variation is less than or equal to a set value, controlling the indoor fan to increase the running rotating speed;
the step of controlling the indoor fan to increase the running speed comprises the following steps:
controlling the indoor fan to increase to a set maximum rotating speed for operation; and
when the indoor fan runs at the set maximum rotating speed to reach the target long time, controlling the indoor fan to run at a second rotating speed;
the rotating speed of the indoor fan before the rotating speed is increased is defined as a first rotating speed, the set maximum rotating speed and the second rotating speed are both greater than the first rotating speed, and the second rotating speed is less than the set maximum rotating speed;
before the step of controlling the indoor fan to operate at the second rotation speed, the method further comprises:
when the indoor fan runs at the set maximum rotating speed to reach the target length, acquiring the current third rotating speed of the outdoor fan and the first coil temperature of the indoor heat exchanger;
determining a reference rotating speed adjusting parameter according to the first rotating speed and the set maximum rotating speed, and determining a correction parameter according to the third rotating speed and the first coil temperature;
determining a target rotating speed adjusting parameter according to the reference rotating speed adjusting parameter and the correction parameter; and
and determining the second rotating speed according to the set maximum rotating speed and the target rotating speed adjusting parameter.
2. The constant-frequency air conditioner controlling method according to claim 1, wherein before the step of controlling the indoor fan to operate at a second rotation speed when the indoor fan operates at the set maximum rotation speed reaches a target, further comprising:
and determining the target time length according to the temperature difference, wherein the target time length is in an increasing trend along with the increase of the temperature difference.
3. The method for controlling a constant-frequency air conditioner according to claim 1 or 2, wherein before the step of controlling the indoor fan to increase the operation speed, the method further comprises:
when the temperature difference is larger than or equal to a set temperature difference and the temperature difference variation is smaller than or equal to a set value, acquiring the temperature of a second coil of the indoor heat exchanger; and
and when the temperature of the second coil pipe meets the set temperature condition of the fixed-frequency air conditioner in the current heat exchange operation state, executing the step of controlling the indoor fan to increase the operation rotating speed.
4. The method of claim 3, wherein the step of obtaining the temperature of the second coil of the indoor heat exchanger is followed by the step of:
determining a target air guide position of an air guide strip of the fixed-frequency air conditioner according to the temperature of the second coil; and
and controlling the air guide strips to guide air according to the air guide positions.
5. The method as claimed in claim 4, wherein the step of determining the target wind guiding position of the wind guiding strip of the constant-frequency air conditioner according to the temperature of the second coil comprises:
when the temperature of the second coil pipe meets the set temperature condition of the constant-frequency air conditioner in the current heat exchange running state, setting the target air guide position as a first air guide position;
the air guide strip is arranged in the air duct of the fixed-frequency air conditioner, the flow direction of air flowing through the air guide strip in the air duct of the fixed-frequency air conditioner is defined as a reference direction, an included angle between the air guide strip corresponding to the first air guide position and the reference direction is defined as a first air guide angle, and the first air guide angle is smaller than or equal to a set angle threshold value.
6. The method as claimed in claim 5, wherein the step of determining the target wind guiding position of the wind guiding strip of the constant-frequency air conditioner according to the temperature of the second coil further comprises:
when the temperature of the second coil pipe does not meet the set temperature condition in the current heat exchange running state of the fixed-frequency air conditioner and the current heat exchange running state of the fixed-frequency air conditioner is heating running, setting the target air guide position as a second air guide position;
and defining an included angle between the air guide strip corresponding to the second air guide position and the reference direction as a second air guide angle, wherein the second air guide angle is larger than the set angle threshold.
7. The method as claimed in claim 6, wherein, before the step of setting the target wind guiding position as the second wind guiding position, the method further comprises:
determining an amount of deviation between the second coil temperature and a set temperature threshold; the set temperature threshold is a temperature threshold corresponding to the set temperature condition when the heat exchange operation state of the fixed-frequency air conditioner is heating operation;
determining a position adjusting parameter according to the deviation amount; and
determining the second air guide position according to the first air guide position and the position adjusting parameter;
wherein a positional deviation between the second wind guiding position and the first wind guiding position increases as the deviation amount increases.
8. The constant-frequency air-conditioning control method according to claim 3, characterized by further comprising:
when the indoor environment temperature is higher than the set temperature and the set temperature is lower than or equal to a first threshold value, determining that the current heat exchange operation state of the fixed-frequency air conditioner is refrigeration operation; and
and when the indoor environment temperature is lower than the set temperature and the set temperature is greater than or equal to a second threshold value, determining that the current heat exchange operation state of the fixed-frequency air conditioner is heating operation.
9. The method of claim 8, wherein the step of obtaining the temperature of the second coil of the indoor heat exchanger is followed by the step of:
when the current heat exchange running state of the fixed-frequency air conditioner is refrigeration running, if the temperature of the second coil is smaller than or equal to a first set temperature threshold value, determining that the temperature of the second coil meets the set temperature condition;
when the current heat exchange running state of the fixed-frequency air conditioner is refrigeration running, if the temperature of the second coil is greater than the first set temperature threshold value, determining that the temperature of the second coil does not meet the set temperature condition;
when the current heat exchange running state of the fixed-frequency air conditioner is heating running, if the temperature of the second coil is greater than or equal to a second set temperature threshold value, determining that the temperature of the second coil meets the set temperature condition; and
when the current heat exchange running state of the fixed-frequency air conditioner is heating running, if the temperature of the second coil is smaller than a second set temperature threshold value, determining that the temperature of the second coil does not meet the set temperature condition;
wherein the first set temperature threshold is less than the second set temperature threshold.
10. A constant-frequency air-conditioning control device, characterized by comprising: a memory, a processor and a fixed-frequency air conditioning control program stored on the memory and executable on the processor, the fixed-frequency air conditioning control program when executed by the processor implementing the steps of the fixed-frequency air conditioning control method according to any one of claims 1 to 9.
11. A constant-frequency air conditioner, characterized in that it comprises the constant-frequency air conditioner control device according to claim 10.
12. A readable storage medium, wherein the readable storage medium has stored thereon a constant-frequency air-conditioning control program, which when executed by a processor, implements the steps of the constant-frequency air-conditioning control method according to any one of claims 1 to 9.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10332186A (en) * 1997-05-30 1998-12-15 Toshiba Corp Air conditioner
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CN106288239A (en) * 2016-10-11 2017-01-04 青岛海尔空调器有限总公司 A kind of control method of operation of air conditioner
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