CN114576795B - Control method of chassis electric heater and air conditioner - Google Patents

Control method of chassis electric heater and air conditioner Download PDF

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Publication number
CN114576795B
CN114576795B CN202111623875.3A CN202111623875A CN114576795B CN 114576795 B CN114576795 B CN 114576795B CN 202111623875 A CN202111623875 A CN 202111623875A CN 114576795 B CN114576795 B CN 114576795B
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CN
China
Prior art keywords
chassis
electric heater
temperature
air conditioner
chassis electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111623875.3A
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Chinese (zh)
Other versions
CN114576795A (en
Inventor
刘怿宁
甘永健
吕阳
陈焕锐
谢龙
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.)
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Original Assignee
Aux Air Conditioning Co Ltd
Ningbo Aux Electric 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.)
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Publication date
Application filed by Aux Air Conditioning Co Ltd, Ningbo Aux Electric Co Ltd filed Critical Aux Air Conditioning Co Ltd
Priority to CN202111623875.3A priority Critical patent/CN114576795B/en
Publication of CN114576795A publication Critical patent/CN114576795A/en
Application granted granted Critical
Publication of CN114576795B publication Critical patent/CN114576795B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/62—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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/34—Heater, e.g. gas burner, electric air heater
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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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)
  • Air Conditioning Control Device (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The embodiment of the application provides a control method of an electric heater of a chassis and an air conditioner. The control method of the chassis electric heater comprises the following steps: heating and starting up the air conditioner; when the air conditioner meets a first preset condition, the chassis electric heater is started; and controlling the chassis electric heater to heat according to the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater. The application solves the technical problem that the existing chassis electric heater has poor deicing effect.

Description

Control method of chassis electric heater and air conditioner
Technical Field
The application relates to the technical field of air conditioner control, in particular to a control method of an electric heater of a chassis and an air conditioner.
Background
With the development of technology and the increasing level of living of people, air conditioners become an indispensable home appliance in the life of people. With the gradual maturity of the technology in the household appliances and the gradual and competitive trend, the quality requirements of consumers on the air conditioner are also higher. Air conditioners in northern China or in winter temperature cold areas of export europe generally have a chassis deicing function.
However, the existing air conditioner has the problem that the adjustment precision of the electric heater of the chassis is poor, and when the outdoor temperature is too low or the wind and snow are large and a large amount of wind and snow blows into the air conditioner external unit, the frost on the chassis can not be removed frequently.
Disclosure of Invention
In order to solve the technical problem of poor deicing effect of the existing chassis electric heater, the application provides a control method of the chassis electric heater, which comprises the following steps: heating and starting up the air conditioner; when the air conditioner meets a first preset condition, the chassis electric heater is started; and controlling the chassis electric heater to heat according to the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater.
The technical effect achieved after the technical scheme is adopted is as follows: the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater are obtained in real time, the temperature environment where the outdoor unit of the air conditioner is located, the icing condition of the chassis of the outdoor unit and the deicing condition of the chassis electric heater can be obtained in real time, so that the adjustment precision of the chassis electric heater can be improved on the basis of melting the chassis icing, and the energy consumption of the chassis electric heater can be reduced while the chassis icing can be guaranteed.
In this embodiment, the first preset condition includes that the air conditioner is started and operated for the first time, the air conditioner is in a heating mode, and the outdoor environment temperature is less than or equal to a first outdoor environment temperature threshold.
The technical effect achieved after the technical scheme is adopted is as follows: if the outdoor environment temperature is less than or equal to the first outdoor environment temperature threshold value, the outdoor environment temperature is lower; when the air conditioner heats and operates under the condition of lower outdoor environment temperature, frost is easily formed on the heat exchanger of the outdoor unit, and after the outdoor unit is defrosted, condensed water generated by defrosting can freeze on the chassis to block the water outlet, so that the operation of the outdoor fan is affected, and in order to avoid damage to the outdoor fan, the chassis electric heater is required to be started to defrost the chassis of the outdoor unit. It can be understood that when the air conditioner is started and operated for the first time, the air conditioner is not started for a night or a long time, and more frost is accumulated in the air conditioner outdoor unit.
In this embodiment, the controlling the operation of the electric chassis heater according to the outdoor ambient temperature, the operation duration of the electric chassis heater, and the chassis temperature includes: controlling the output power of the chassis electric heater according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and controlling the power on-off of the electric heater according to the relation between the chassis temperature and the chassis temperature threshold.
The technical effect achieved after the technical scheme is adopted is as follows: the method comprises the steps of presetting an outdoor environment temperature threshold, an operation duration threshold and a chassis temperature threshold, and controlling the output power of the chassis electric heater according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold; and the power on-off of the chassis electric heater is controlled according to the relation between the chassis temperature and the chassis temperature threshold value, so that the output power of the chassis electric heater and the power on-off of the chassis electric heater can be controlled more accurately, and the energy consumption of the chassis electric heater is reduced while the chassis is ensured to be frozen and melted.
In this embodiment, the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater comprises: if T2 is more than Tw and less than or equal to T1, controlling the chassis electric heater to operate at P1; if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P2 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P3 under the condition that t2 is less than td and less than or equal to t3, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P4 under the condition that t3 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein Tw is the outdoor ambient temperature; t1 is a first outdoor ambient temperature threshold; t2 is a second outdoor ambient temperature threshold; td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold; t3 is a third run length threshold.
The technical effect achieved after the technical scheme is adopted is as follows: by setting a lower initial output power and then gradually increasing the output power of the chassis electric heater according to the running time of the chassis electric heater, the chassis can be prevented from generating unnecessary energy consumption while ice can be melted.
In this embodiment, the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater further comprises: if T3 is more than Tw and less than or equal to T2, controlling the chassis electric heater to operate at P2; if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P3 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P4 under the condition that t2 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein Tw is the outdoor ambient temperature; t2 is a second outdoor ambient temperature threshold; t3 is a third outdoor environment temperature threshold; td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold.
The technical effect achieved after the technical scheme is adopted is as follows: if T3 is more than Tw and less than or equal to T2, the current outdoor environment temperature is lower, and the chassis is easier to freeze, so that the chassis electric heater is controlled to operate at a larger P2; and then the output power of the chassis electric heater is gradually increased according to the operation time of the chassis electric heater, so that the chassis can be prevented from generating unnecessary energy consumption while the chassis is frozen and melted.
In this embodiment, the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater further comprises: if T4 is more than Tw and less than or equal to T3, controlling the chassis electric heater to operate at P3; if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P4 under the condition that t1 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein Tw is the outdoor ambient temperature; t3 is a third outdoor environment temperature threshold; t4 is a fourth outdoor ambient temperature threshold; td is the operation time of the chassis electric heater; t1 is a first run length threshold.
The technical effect achieved after the technical scheme is adopted is as follows: if T4 is more than Tw and less than or equal to T3, the current outdoor environment temperature is low, and the chassis is easy to freeze, so that the chassis electric heater is controlled to operate at a larger P3; and then the output power of the chassis electric heater is gradually increased according to the operation time of the chassis electric heater, so that the chassis can be prevented from generating unnecessary energy consumption while the chassis is frozen and melted.
In this embodiment, the control method of the chassis electric heater further includes: when the air conditioner is not started and operated for the first time, if the defrosting times and the defrosting period of the air conditioner meet a second preset condition, the chassis electric heater is started, and the chassis electric heater is controlled to operate at P1; and controlling the chassis electric heater to heat according to the chassis temperature and the running time of the chassis electric heater.
The technical effect achieved after the technical scheme is adopted is as follows: if the air conditioner is not started for the first time, acquiring the defrosting times and the defrosting period of the air conditioner, and judging whether to start the electric heater of the chassis according to the defrosting times and the defrosting period of the air conditioner; and then acquiring the chassis temperature and the running time of the chassis electric heater, and controlling the running power and the power on-off of the chassis electric heater according to the chassis temperature and the running time of the chassis electric heater, so that the adjusting precision of the chassis electric heater of the air conditioner under the condition of non-first starting can be improved, and the energy consumption of the chassis electric heater is reduced while the chassis is ensured to be frozen and melted.
In this embodiment, the second preset condition includes: n is greater than or equal to N 0 And the values of the defrosting cycles for N times are equal or reduced; wherein N is the defrosting times of the air conditioner; n (N) 0 Is a threshold for the number of frostings.
The technical effect achieved after the technical scheme is adopted is as follows: if the defrosting times of the air conditioner exceed the defrosting times threshold value, the air conditioner is in a frequent defrosting state; if the values of the defrosting cycles are equal or reduced, the thicker the ice on the chassis is, so that the electric heater of the chassis is started to defrost. It can be understood that when the chassis electric heater is turned on, defrosting does not exit when entering the heating mode.
In this embodiment, the controlling the chassis electric heater to heat according to the chassis temperature and the operation time of the chassis electric heater includes: if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P2 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P3 under the condition that t2 is less than td and less than or equal to t3, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P4 under the condition that t3 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold; t3 is a third run length threshold.
The technical effect achieved after the technical scheme is adopted is as follows: through the operation duration of the chassis electric heater, whether the operation power of the current chassis electric heater is proper or not can be judged, whether the current heating value is enough to melt the frost on the chassis or not is judged, once the heating value in the operation duration threshold is insufficient to melt the frost on the chassis, the operation power of the chassis electric heater is increased until the chassis temperature is higher than the chassis temperature threshold, namely the frost on the chassis is completely melted, and then the chassis electric heater is turned off. Therefore, the chassis electric heater can be prevented from generating unnecessary energy consumption while the chassis is enabled to be frozen and melted.
In this embodiment, the control method of the chassis electric heater further includes: if the operation mode of the air conditioner is changed, the chassis electric heater is turned off; and/or if the air conditioner is shut down or broken, the chassis electric heater is turned off; and/or if the air conditioner fails, the chassis electric heater is turned off.
The technical effect achieved after the technical scheme is adopted is as follows: if the operation mode of the air conditioner is changed, namely the air conditioner exits from the heating mode to be changed into the refrigerating mode, the outdoor unit becomes a condenser to emit heat, and the electric heater of the chassis is not needed to be heated in an auxiliary mode, so that after the operation mode of the air conditioner is changed, the electric heater is controlled to be turned off, and the waste of energy sources is avoided; if the air conditioner is shut down or broken, the outdoor fan can also stop running, and at the moment, whether the chassis of the outdoor unit is frozen or not can not influence the outdoor fan, so that after the air conditioner stops running, the electric heater is controlled to be turned off, and the waste of energy sources is avoided. If the air conditioner fails, the chassis electric heater is turned on continuously, so that the service life of the air conditioner is influenced, and when the air conditioner fails, the chassis electric heater is turned off, so that the air conditioner is protected.
The embodiment of the application provides an air conditioner, which comprises: the air conditioner body comprises an indoor unit and an outdoor unit; and the at least one temperature detection device is arranged on the chassis of the outdoor unit.
The embodiment of the application provides an air conditioner, which comprises: the first control module is used for controlling the heating start of the air conditioner; the second control module is used for starting the chassis electric heater when the air conditioner meets a first preset condition; and the third control module is used for controlling the chassis electric heater to heat according to the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater.
The embodiment of the application provides an air conditioner, which comprises: a computer-readable storage medium storing a computer program and a packaged IC, the computer program, when read and run by the packaged IC, implementing the control method of an air conditioner as described in any one of the previous embodiments.
In summary, the foregoing embodiments of the present application may have one or more of the following advantages or benefits:
the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater are obtained in real time, the temperature environment where the outdoor unit of the air conditioner is located, the icing condition of the chassis of the outdoor unit and the deicing condition of the chassis electric heater can be obtained in real time, so that the adjustment precision of the chassis electric heater can be improved on the basis of melting the chassis icing, and the energy consumption of the chassis electric heater can be reduced while the chassis icing can be guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a control method of an electric chassis heater according to a first embodiment of the present application.
Fig. 2 is a schematic structural diagram of an air conditioner according to a second embodiment of the present application.
Fig. 3 is a schematic distribution diagram of a temperature sensor according to a second embodiment of the present application.
Fig. 4 is a schematic block diagram of an air conditioner according to a third embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
[ first embodiment ]
Referring to fig. 1, a flow chart of a control method of an electric chassis heater according to a first embodiment of the present application is shown. The control method of the chassis electric heater comprises the following steps:
step S10: the air conditioner is heated and started.
Step S20: and when the air conditioner meets a first preset condition, starting the chassis electric heater.
Step S30: and controlling the chassis electric heater to heat according to the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater.
In a specific embodiment, by acquiring the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater in real time, the temperature environment where the outdoor unit of the air conditioner is located, the icing condition of the chassis of the outdoor unit and the deicing condition of the chassis electric heater can be acquired in real time, so that the adjustment precision of the chassis electric heater can be improved on the basis of melting the chassis icing, and the energy consumption of the chassis electric heater can be reduced while the chassis icing can be guaranteed.
Further, the first preset condition includes that the air conditioner is started and operated for the first time, the air conditioner is in a heating mode, and the outdoor environment temperature is smaller than or equal to a first outdoor environment temperature threshold value.
In one embodiment, if the outdoor ambient temperature is less than or equal to the first outdoor ambient temperature threshold, it is indicated that the outdoor ambient temperature is relatively low; when the air conditioner heats and operates under the condition of lower outdoor environment temperature, frost is easily formed on the heat exchanger of the outdoor unit, and after the outdoor unit is defrosted, condensed water generated by defrosting can freeze on the chassis to block the water outlet, so that the operation of the outdoor fan is affected, and in order to avoid damage to the outdoor fan, the chassis electric heater is required to be started to defrost the chassis of the outdoor unit.
It can be understood that when the air conditioner is started and operated for the first time, the air conditioner is not started for a night or a long time, and more frost is accumulated in the air conditioner outdoor unit.
Further, the controlling the operation of the electric chassis heater according to the outdoor environment temperature, the operation time of the electric chassis heater and the chassis temperature includes: controlling the output power of the chassis electric heater according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and controlling the power on-off of the electric heater according to the relation between the chassis temperature and the chassis temperature threshold.
In a specific embodiment, the output power of the chassis electric heater is controlled by presetting an outdoor environment temperature threshold, an operation duration threshold and a chassis temperature threshold and according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold; and according to the relation between the chassis temperature and the chassis temperature threshold, the power on-off of the chassis electric heater is controlled, so that the output power of the chassis electric heater and the power on-off of the chassis electric heater can be controlled more accurately, and the energy consumption of the chassis electric heater is reduced while the chassis is ensured to be frozen and melted.
Further, the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater comprises: if T2 is more than Tw and less than or equal to T1, controlling the chassis electric heater to operate at P1; if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P2 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P3 under the condition that t2 is less than td and less than or equal to t3, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P4 under the condition that t3 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein Tw is the outdoor ambient temperature; t1 is a first outdoor ambient temperature threshold; t2 is a second outdoor ambient temperature threshold; td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold; t3 is a third run length threshold.
In a specific embodiment, if T2 is less than Tw and less than or equal to T1, firstly controlling the chassis electric heater to operate at P1, then adjusting the output power of the chassis electric heater according to the magnitude relation between the operation time length of the chassis electric heater and the operation time length threshold, and if the chassis temperature can be enabled to be greater than the chassis temperature threshold through the first operation power P1 within the first operation time length threshold, then indicating that frost on the chassis can be completely melted by adopting the first operation power P1, so that the chassis electric heater is turned off to reduce the energy consumption of the air conditioner; if the chassis temperature cannot be made to be greater than the chassis temperature threshold value through the first operation power P1 within the first operation duration threshold value, the accumulated frost on the chassis is thicker, and the output power of the chassis electric heater needs to be increased, so that the operation power of the chassis electric heater is increased to P2; if t1 is less than td and less than or equal to t2, the chassis temperature can be enabled to be greater than the chassis temperature threshold value through the second operation power P2, and the fact that the second operation power P2 is adopted can be used for completely melting frost on the chassis is indicated, so that the chassis electric heater is turned off to reduce the energy consumption of the air conditioner; if t2 is less than td and less than or equal to t3, the operating power of the electric heater of the chassis is increased to P3 if the chassis temperature is still not met and is greater than the chassis temperature threshold; if t3 < td, the chassis temperature is still not satisfied and is greater than the chassis temperature threshold, the operating power of the chassis electric heater is increased to P4.
By setting a lower initial output power and then gradually increasing the output power of the chassis electric heater according to the running time of the chassis electric heater, the chassis can be prevented from generating unnecessary energy consumption while ice can be melted.
Further, the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater further comprises: if T3 is more than Tw and less than or equal to T2, controlling the chassis electric heater to operate at P2; if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P3 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P4 under the condition that t2 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein Tw is the outdoor ambient temperature; t2 is a second outdoor ambient temperature threshold; t3 is a third outdoor environment temperature threshold; td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold.
In one embodiment, if T3 is less than Tw and less than or equal to T2, the current outdoor environment temperature is lower, and the chassis is easier to freeze, so that the chassis electric heater is controlled to operate at a larger P2; and then the output power of the chassis electric heater is gradually increased according to the operation time of the chassis electric heater, so that the chassis can be prevented from generating unnecessary energy consumption while the chassis is frozen and melted.
Further, the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater further comprises: if T4 is more than Tw and less than or equal to T3, controlling the chassis electric heater to operate at P3; if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P4 under the condition that t1 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein Tw is the outdoor ambient temperature; t3 is a third outdoor environment temperature threshold; t4 is a fourth outdoor ambient temperature threshold; td is the operation time of the chassis electric heater; t1 is a first run length threshold.
In one embodiment, if T4 is less than Tw and less than or equal to T3, the current outdoor environment temperature is low, and the chassis is easy to freeze, so that the chassis electric heater is controlled to operate at a larger P3; and then the output power of the chassis electric heater is gradually increased according to the operation time of the chassis electric heater, so that the chassis can be prevented from generating unnecessary energy consumption while the chassis is frozen and melted.
Further, the control method of the chassis electric heater further comprises the following steps: when the air conditioner is not started and operated for the first time, if the defrosting times and the defrosting period of the air conditioner meet a second preset condition, the chassis electric heater is started, and the chassis electric heater is controlled to operate at P1; and controlling the chassis electric heater to heat according to the chassis temperature and the running time of the chassis electric heater.
In a specific embodiment, if the air conditioner is not started for the first time, acquiring the defrosting times and the defrosting period of the air conditioner, and judging whether to start the chassis electric heater according to the defrosting times and the defrosting period of the air conditioner; and then acquiring the chassis temperature and the running time of the chassis electric heater, and controlling the running power and the power on-off of the chassis electric heater according to the chassis temperature and the running time of the chassis electric heater, so that the adjusting precision of the chassis electric heater of the air conditioner under the condition of non-first starting can be improved, and the energy consumption of the chassis electric heater is reduced while the chassis is ensured to be frozen and melted.
Further, the second preset condition includes: n is greater than or equal to N 0 And the period value of the defrosting for N times meets the following conditionsEqual or reduced; wherein N is the defrosting times of the air conditioner; n (N) 0 Is a threshold for the number of frostings.
In one embodiment, if the number of times of defrosting of the air conditioner exceeds the threshold number of times of defrosting, the air conditioner is indicated to be in a frequent defrosting state; if the values of the defrosting cycles are equal or reduced, the thicker the ice on the chassis is, so that the electric heater of the chassis is started to defrost. It can be understood that when the chassis electric heater is turned on, defrosting does not exit when entering the heating mode.
Further, the controlling the electric heater to heat according to the temperature of the chassis and the operation time of the electric heater includes: if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater; increasing the operating power of the chassis electric heater to P2 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P3 under the condition that t2 is less than td and less than or equal to t3, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; increasing the operating power of the chassis electric heater to P4 under the condition that t3 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold; wherein td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold; t3 is a third run length threshold.
In a specific embodiment, through the operation duration of the chassis electric heater, it can be judged whether the operation power of the current chassis electric heater is suitable, whether the current heating value is enough to melt the frost on the chassis, and once the heating value in the operation duration threshold is insufficient to melt the frost on the chassis, the operation power of the chassis electric heater is increased until the chassis temperature is higher than the chassis temperature threshold, that is, the frost on the chassis is melted completely, and then the chassis electric heater is turned off. Therefore, the chassis electric heater can be prevented from generating unnecessary energy consumption while the chassis is enabled to be frozen and melted.
Further, the control method of the chassis electric heater further comprises the following steps: if the operation mode of the air conditioner is changed, the chassis electric heater is turned off; and/or if the air conditioner is shut down or broken, the chassis electric heater is turned off; and/or if the air conditioner fails, the chassis electric heater is turned off.
In a specific embodiment, if the operation mode of the air conditioner is changed, that is, the air conditioner exits from the heating mode to be changed into the cooling mode, the outdoor unit becomes a condenser to emit heat, and the electric heater of the chassis is not needed to perform auxiliary heating, so that after the operation mode of the air conditioner is changed, the electric heater is controlled to be turned off, thereby avoiding the waste of energy sources; if the air conditioner is shut down or broken, the outdoor fan can also stop running, and at the moment, whether the chassis of the outdoor unit is frozen or not can not influence the outdoor fan, so that after the air conditioner stops running, the electric heater is controlled to be turned off, and the waste of energy sources is avoided. If the air conditioner fails, the chassis electric heater is turned on continuously, so that the service life of the air conditioner is influenced, and when the air conditioner fails, the chassis electric heater is turned off, so that the air conditioner is protected.
It will be appreciated that to avoid frequent turning on of the electrical heating, the lifetime is reduced or the detected temperature is caused to be inaccurate or fluctuating. Once the electric heating is turned on, the minimum operation is performed for t0 time, td is detected at t0 time, and the electric heating is kept in an initial state unchanged. And after t0, executing corresponding actions according to the judging conditions. Similarly, once the electric heating is turned off, the electric heating is stopped at least for t0 time, and is not turned on at t0 time.
[ second embodiment ]
A second embodiment of the present application provides an air conditioner. Referring to fig. 2 and 3, the air conditioner includes: an air conditioner body and at least one temperature detecting device. The air conditioner body comprises an indoor unit and an outdoor unit; at least one temperature detecting device is arranged on the chassis of the outdoor unit. Specifically, when a temperature sensor is arranged on the chassis, the temperature sensor is positioned right below the outdoor fan blade and is used for detecting the temperature of the chassis.
For example, the temperature detecting device is a temperature sensor; the number of temperature sensing devices may be one or more, depending on the cost budget. When the air conditioner is provided with a plurality of temperature detection devices, the temperature detection devices are uniformly distributed on the chassis.
In a specific embodiment, when two temperature sensors are arranged on the chassis, the two temperature sensors are arranged below the outdoor fan blade and are positioned on two sides of the outdoor fan blade; when four temperature sensors are arranged on the chassis, the four temperature sensors are uniformly distributed on the chassis in a matrix shape.
[ third embodiment ]
A third embodiment of the present application provides an air conditioner. Referring to fig. 4, the air conditioner 200 includes: the first control module 210, the second control module 220, and the third control module 230. The first control module 210 is used for controlling the air conditioner to heat and start; the second control module 220 is configured to turn on the electric chassis heater when the air conditioner satisfies a first preset condition; the third control module 230 is configured to control the electric chassis heater to heat according to the outdoor ambient temperature, the chassis temperature, and the operation time of the electric chassis heater.
In a specific embodiment, the first control module 210, the second control module 220 and the third control module 230 cooperate with each other to implement any of the control methods of the electric heater of the chassis provided in the first embodiment, and achieve the same technical effects, so that repetition is avoided and no further description is given here.
[ fourth embodiment ]
A fourth embodiment of the present application provides an air conditioner including, for example: the air conditioner realizes any of the control methods of the chassis electric heater provided in the first embodiment of the present application and can achieve the same technical effects when the computer program is read and run by the packaged IC.
In a specific embodiment, the packaged IC is, for example, a processor chip electrically connected to a computer readable storage medium for reading and executing the computer program. The packaged IC may also be a packaged circuit board that encapsulates a processor chip that can read and execute the computer program; of course, the circuit board may also encapsulate the computer-readable storage medium.
The processor chip may further be provided with an air conditioner according to the second embodiment or the third embodiment, and the processor chip may implement the control method of the electric heater of the chassis according to the first embodiment through the air conditioner, which is not described herein again.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (11)

1. The control method of the chassis electric heater is characterized by comprising the following steps of:
heating and starting up the air conditioner;
when the air conditioner meets a first preset condition, the chassis electric heater is started;
controlling the chassis electric heater to heat according to the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater;
the controlling the operation of the chassis electric heater according to the outdoor environment temperature, the operation time of the chassis electric heater and the chassis temperature comprises the following steps:
controlling the output power of the chassis electric heater according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and controlling the power on-off of the electric heater of the chassis according to the relation between the chassis temperature and the chassis temperature threshold;
controlling the output power of the chassis electric heater according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation duration of the chassis electric heater and the operation duration threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater comprises:
if T2 is more than Tw and less than or equal to T1, controlling the chassis electric heater to operate at P1;
if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater;
increasing the operating power of the chassis electric heater to P2 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
increasing the operating power of the chassis electric heater to P3 under the condition that t2 is less than td and less than or equal to t3, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
increasing the operating power of the chassis electric heater to P4 under the condition that t3 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
wherein Tw is the outdoor ambient temperature; t1 is a first outdoor ambient temperature threshold; t2 is a second outdoor ambient temperature threshold; td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold; t3 is a third run length threshold.
2. The control method of a chassis electric heater according to claim 1, wherein the first preset condition includes:
the air conditioner is started and operated for the first time, is in a heating mode and the outdoor environment temperature is smaller than or equal to a first outdoor environment temperature threshold value.
3. The method for controlling a chassis electric heater according to claim 1, wherein the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation time length of the chassis electric heater and the operation time length threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater further comprises:
if T3 is more than Tw and less than or equal to T2, controlling the chassis electric heater to operate at P2;
if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater;
increasing the operating power of the chassis electric heater to P3 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
increasing the operating power of the chassis electric heater to P4 under the condition that t2 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
wherein Tw is the outdoor ambient temperature; t2 is a second outdoor ambient temperature threshold; t3 is a third outdoor environment temperature threshold; td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold.
4. The method for controlling a chassis electric heater according to claim 1, wherein the output power of the chassis electric heater is controlled according to the magnitude relation between the outdoor environment temperature and the outdoor environment temperature threshold value and the magnitude relation between the operation time length of the chassis electric heater and the operation time length threshold value; and according to the magnitude relation of the chassis temperature and the chassis temperature threshold, controlling the power on-off of the chassis electric heater further comprises:
if T4 is more than Tw and less than or equal to T3, controlling the chassis electric heater to operate at P3;
if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater;
increasing the operating power of the chassis electric heater to P4 under the condition that t1 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
wherein Tw is the outdoor ambient temperature; t3 is a third outdoor environment temperature threshold; t4 is a fourth outdoor ambient temperature threshold; td is the operation time of the chassis electric heater; t1 is a first run length threshold.
5. The control method of a chassis electric heater according to claim 1, further comprising:
when the air conditioner is not started and operated for the first time, if the defrosting times and the defrosting period of the air conditioner meet a second preset condition, the chassis electric heater is started, and the chassis electric heater is controlled to operate at P1;
and controlling the chassis electric heater to heat according to the chassis temperature and the running time of the chassis electric heater.
6. The method of controlling a chassis electric heater according to claim 5, wherein the second preset condition includes:
N≥N 0 and the values of the defrosting cycles for N times are equal or reduced;
wherein N is the defrosting times of the air conditioner; n (N) 0 Is a threshold for the number of frostings.
7. The method of claim 5, wherein controlling the electric chassis heater to heat according to the temperature of the chassis and the operation time of the electric chassis heater comprises:
if td is less than or equal to t1, if the chassis temperature is greater than the chassis temperature threshold, turning off the chassis electric heater;
increasing the operating power of the chassis electric heater to P2 under the condition that t1 is less than td and less than or equal to t2, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
increasing the operating power of the chassis electric heater to P3 under the condition that t2 is less than td and less than or equal to t3, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
increasing the operating power of the chassis electric heater to P4 under the condition that t3 is less than td, and turning off the chassis electric heater if the chassis temperature is greater than the chassis temperature threshold;
wherein td is the operation time of the chassis electric heater; t1 is a first operation duration threshold; t2 is a second run length threshold; t3 is a third run length threshold.
8. The control method of a chassis electric heater according to claim 1, further comprising:
if the operation mode of the air conditioner is changed, the chassis electric heater is turned off; and/or
If the air conditioner is shut down or broken, the chassis electric heater is turned off; and/or
If the air conditioner fails, the chassis electric heater is turned off.
9. An air conditioner, characterized in that the air conditioner implements a control method of the chassis electric heater as set forth in any one of claims 1 to 8, the air conditioner comprising:
the air conditioner body comprises an indoor unit and an outdoor unit;
and the at least one temperature detection device is arranged on the chassis of the outdoor unit.
10. An air conditioner, characterized in that the air conditioner implements a control method of the chassis electric heater as set forth in any one of claims 1 to 8, the air conditioner comprising:
the first control module is used for controlling the heating start of the air conditioner;
the second control module is used for starting the chassis electric heater when the air conditioner meets a first preset condition;
and the third control module is used for controlling the chassis electric heater to heat according to the outdoor environment temperature, the chassis temperature and the running time of the chassis electric heater.
11. An air conditioner, characterized in that the air conditioner comprises: a computer-readable storage medium storing a computer program and a packaged IC, the computer program, when read and run by the packaged IC, implementing the control method of the electric chassis heater according to any one of claims 1 to 8.
CN202111623875.3A 2021-12-28 2021-12-28 Control method of chassis electric heater and air conditioner Active CN114576795B (en)

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