CN112815495B - Thermal protection device and method for air conditioner indoor unit and air conditioner - Google Patents

Thermal protection device and method for air conditioner indoor unit and air conditioner Download PDF

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Publication number
CN112815495B
CN112815495B CN202110029965.3A CN202110029965A CN112815495B CN 112815495 B CN112815495 B CN 112815495B CN 202110029965 A CN202110029965 A CN 202110029965A CN 112815495 B CN112815495 B CN 112815495B
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air conditioner
rotating speed
current
controlling
speed
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CN112815495A (en
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李华生
袁杰
李若泽
陈凤武
邹智宇
白信
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • F24F11/89—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
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/52—Indication arrangements, e.g. displays
    • F24F11/526—Indication arrangements, e.g. displays giving audible indications
    • 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
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention discloses a thermal protection device and a method of an air conditioner indoor unit and an air conditioner, wherein the device comprises the following components: the monitoring unit is used for monitoring the current temperature of each heating component in n heating components of the air conditioner indoor unit, wherein n is a positive integer; n heat-generating components, comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component; the control unit is used for determining the highest temperature of n current temperatures corresponding to the n heating components and determining whether the air conditioner indoor unit generates an overheating phenomenon according to the highest temperature; if the air conditioner indoor unit is overheated, a reminding message of the overheating of the air conditioner indoor unit is initiated, and the operation of the load of the air conditioner is controlled according to the temperature range of the highest temperature in the preset temperature range, so that the heat protection control of the air conditioner indoor unit is realized. This scheme sets up the overheat protection mechanism through interior machine, can avoid interior machine part main component to arouse the inside burning of catching fire of air conditioner when overheated, has promoted the security of air conditioner.

Description

Thermal protection device and method for air conditioner indoor unit and air conditioner
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a thermal protection device and method for an air conditioner indoor unit and an air conditioner, in particular to a thermal protection circuit control device and method and an air conditioner.
Background
In some schemes, the temperature of the compressor during operation is monitored, the protection treatment such as wind speed regulation, frequency regulation, compressor stopping and the like is carried out through a preset threshold value, only the protection mechanism of the compressor of the outer machine is provided, the protection mechanism of the inner machine part is lacked, and the main parts of the inner machine part can cause the internal ignition and combustion of the air conditioner when being overheated, so that the safety of the air conditioner is influenced.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a thermal protection device and method for an air conditioner indoor unit and an air conditioner, and aims to solve the problems that the air conditioner only has a compressor protection mechanism of an outdoor unit, the protection mechanism of the indoor unit part is lacked, and the main parts of the indoor unit part can cause the internal part of the air conditioner to be ignited and burnt when being overheated, so that the safety of the air conditioner is influenced.
The invention provides a thermal protection device of an air conditioner indoor unit, which comprises: a monitoring unit and a control unit; wherein the monitoring unit is configured to monitor a current temperature of each of n heat-generating components of the air conditioner internal unit, n being a positive integer; n of said heat-generating components, comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component; the control unit is configured to determine the highest temperature of n current temperatures corresponding to the n heat generating components, and determine whether the air conditioner indoor unit generates an overheating phenomenon according to the highest temperature; if the air conditioner indoor unit is overheated, initiating a reminding message of the overheating phenomenon of the air conditioner indoor unit, and controlling the operation of the load of the air conditioner according to the temperature range to which the highest temperature belongs in the preset temperature range so as to realize the thermal protection control of the air conditioner indoor unit; the load of the air conditioner includes: at least one of a heat radiating part, a compressor and a direct current fan part of the air conditioner.
In some embodiments, the preset temperature range includes: a temperature range consisting of a first set temperature threshold, a second set temperature threshold, and a third set temperature threshold; the control unit determines whether the air conditioner indoor unit generates an overheating phenomenon according to the highest temperature, and comprises the following steps: if the maximum temperature is smaller than the first set temperature threshold, determining that the air conditioner internal unit does not overheat, controlling the air conditioner to continuously operate according to the current operation mode, and controlling a heat dissipation component of the air conditioner to operate at a set low speed; if the maximum temperature is greater than or equal to the first set temperature threshold and less than the second set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a first-stage overheating phenomenon; if the maximum temperature is greater than or equal to the second set temperature threshold and less than the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a second-stage overheating phenomenon; and if the maximum temperature is greater than or equal to the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a third-stage overheating phenomenon.
In some embodiments, the control unit initiates a message for reminding that an overheating phenomenon occurs in the air conditioner indoor unit, and the message includes: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, displaying a reminding message of the first-stage overheating phenomenon of the air conditioner indoor unit through a display component in a multimedia component of the air conditioner, and displaying a first set color on a frame of the display component in the multimedia component of the air conditioner for color warning; under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the second-stage overheating phenomenon of the air conditioner indoor unit, a frame of the display part in the multimedia part of the air conditioner displays a second set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out through a horn part in the multimedia part at a first set volume and a first set speech speed; under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the third-stage overheating phenomenon of the air conditioner indoor unit, a display area of the display part in the multimedia part of the air conditioner displays a third set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out by setting the volume and the speed of a voice through a horn part in the multimedia part with the second set volume and the second set speed of a voice.
In some embodiments, the controlling unit controls the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, including: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, performing thermal protection on the first-stage overheating phenomenon; wherein thermally protecting the first stage overheating event comprises: controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle speed; under the condition that the current rotating speed of the heat radiating part is lower than a set medium speed, controlling the heat radiating part to operate from the current rotating speed to the set medium speed; in a refrigeration mode, if the current frequency of the compressor is not lower than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation; in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed; in the heating mode, if the current frequency of the compressor is not higher than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation; in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed; in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
In some embodiments, the control unit controls an operation of a load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, further comprising: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, performing thermal protection on the second-stage overheating phenomenon; wherein thermally protecting the second stage overheating phenomenon comprises: under the condition that the current rotating speed of the heat radiating part is not lower than a set middle-high speed, controlling the heat radiating part to maintain the current rotating speed; under the condition that the current rotating speed of the heat radiating part is lower than the set middle-high speed, controlling the heat radiating part to be adjusted to the set middle-high speed from the current rotating speed; in a refrigeration mode, if the current frequency of the compressor is not lower than a set medium-high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set medium-high frequency, controlling the compressor to be adjusted to the set medium-high frequency from the current frequency; in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle-low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set middle-low speed, controlling the direct current fan component to be adjusted to the set middle-low speed from the current rotating speed; in the heating mode, if the current frequency of the compressor is not higher than a set middle-low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set middle-low frequency, controlling the compressor to be adjusted to the set middle-low frequency from the current frequency; in the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed; in the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed.
In some embodiments, the controlling unit controls the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, including: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, performing thermal protection on the third-stage overheating phenomenon; wherein thermally protecting the third stage overheating phenomenon comprises: controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set high speed; under the condition that the current rotating speed of the heat radiating part is lower than the set high speed, controlling the heat radiating part to adjust the current rotating speed to the set high speed to run; in a refrigeration mode, if the current frequency of the compressor is not lower than a set high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation; in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set low speed, controlling the direct current fan component to be adjusted to the set low speed from the current rotating speed; in the heating mode, if the current frequency of the compressor is not higher than the set low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set low frequency, controlling the compressor to be adjusted from the current frequency to the set low frequency for operation; in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust from the current rotating speed to the set high speed to run; in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
In some embodiments, further comprising: the control unit is further configured to, after controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, re-determine the maximum temperature among n current temperatures corresponding to n heat generating components to determine whether an overheating phenomenon occurs in the air conditioner according to the re-determined maximum temperature, and control the operation of the load of the air conditioner according to a temperature section to which the re-determined maximum temperature belongs in a preset temperature range in the case that an overheating phenomenon occurs in the air conditioner; and under the condition that the overheating phenomenon of the air conditioner internal unit belongs to a third stage overheating phenomenon, if the redetermined highest temperature is still greater than or equal to a third set temperature threshold value after the set time, cutting off the power supply of a direct current fan component, a display component, a multimedia component and a loudspeaker component of the air conditioner, and controlling a radiating component of the air conditioner to maintain the set high-speed operation.
In accordance with another aspect of the present invention, there is provided an air conditioner including: the thermal protection device of the air conditioner indoor unit is described above.
In another aspect, the present invention provides a method for protecting heat of an air conditioner indoor unit, including: monitoring the current temperature of each of n heat generating components of the air conditioner indoor unit, wherein n is a positive integer; n of said heat-generating components, comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component; determining the highest temperature of n current temperatures corresponding to the n heating components, and determining whether the air conditioner internal unit has an overheating phenomenon according to the highest temperature; if the air conditioner indoor unit is overheated, initiating a reminding message of the overheating phenomenon of the air conditioner indoor unit, and controlling the operation of the load of the air conditioner according to the temperature range to which the highest temperature belongs in the preset temperature range so as to realize the thermal protection control of the air conditioner indoor unit; the load of the air conditioner includes: at least one of a heat radiating part, a compressor and a direct current fan part of the air conditioner.
In some embodiments, the preset temperature range includes: a temperature range consisting of a first set temperature threshold, a second set temperature threshold, and a third set temperature threshold; determining whether the overheating phenomenon occurs in the air conditioner indoor unit according to the highest temperature, wherein the determining step comprises the following steps: if the maximum temperature is smaller than the first set temperature threshold, determining that the air conditioner internal unit does not overheat, controlling the air conditioner to continuously operate according to the current operation mode, and controlling a heat dissipation component of the air conditioner to operate at a set low speed; if the maximum temperature is greater than or equal to the first set temperature threshold and less than the second set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a first-stage overheating phenomenon; if the maximum temperature is greater than or equal to the second set temperature threshold and less than the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a second-stage overheating phenomenon; and if the maximum temperature is greater than or equal to the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a third-stage overheating phenomenon.
In some embodiments, the initiating the reminding message of the overheating phenomenon of the air conditioner indoor unit includes: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, displaying a reminding message of the first-stage overheating phenomenon of the air conditioner indoor unit through a display component in a multimedia component of the air conditioner, and displaying a first set color on a frame of the display component in the multimedia component of the air conditioner for color warning; under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the second-stage overheating phenomenon of the air conditioner indoor unit, a frame of the display part in the multimedia part of the air conditioner displays a second set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out through a horn part in the multimedia part at a first set volume and a first set speech speed; under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the third-stage overheating phenomenon of the air conditioner indoor unit, a display area of the display part in the multimedia part of the air conditioner displays a third set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out by setting the volume and the speed of a voice through a horn part in the multimedia part with the second set volume and the second set speed of a voice.
In some embodiments, controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range includes: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, performing thermal protection on the first-stage overheating phenomenon; wherein thermally protecting the first stage overheating event comprises: controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle speed; under the condition that the current rotating speed of the heat radiating part is lower than a set medium speed, controlling the heat radiating part to operate from the current rotating speed to the set medium speed; in a refrigeration mode, if the current frequency of the compressor is not lower than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation; in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed; in the heating mode, if the current frequency of the compressor is not higher than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation; in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed; in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
In some embodiments, controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range further includes: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, performing thermal protection on the second-stage overheating phenomenon; wherein thermally protecting the second stage overheating phenomenon comprises: under the condition that the current rotating speed of the heat radiating part is not lower than a set middle-high speed, controlling the heat radiating part to maintain the current rotating speed; under the condition that the current rotating speed of the heat radiating part is lower than the set middle-high speed, controlling the heat radiating part to be adjusted to the set middle-high speed from the current rotating speed; in a refrigeration mode, if the current frequency of the compressor is not lower than a set medium-high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set medium-high frequency, controlling the compressor to be adjusted to the set medium-high frequency from the current frequency; in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle-low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set middle-low speed, controlling the direct current fan component to be adjusted to the set middle-low speed from the current rotating speed; in the heating mode, if the current frequency of the compressor is not higher than a set middle-low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set middle-low frequency, controlling the compressor to be adjusted to the set middle-low frequency from the current frequency; in the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed; in the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed.
In some embodiments, controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range includes: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, performing thermal protection on the third-stage overheating phenomenon; wherein thermally protecting the third stage overheating phenomenon comprises: controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set high speed; under the condition that the current rotating speed of the heat radiating part is lower than the set high speed, controlling the heat radiating part to adjust the current rotating speed to the set high speed to run; in a refrigeration mode, if the current frequency of the compressor is not lower than a set high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation; in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than a set high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set high speed, controlling the direct current fan component to adjust the current rotating speed to the set high speed to run; in the heating mode, if the current frequency of the compressor is not higher than the set high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation; in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust from the current rotating speed to the set high speed to run; in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
In some embodiments, further comprising: after controlling the operation of the load of the air conditioner according to the temperature interval to which the maximum temperature belongs in the preset temperature range, re-determining the maximum temperature of n current temperatures corresponding to n heat generating components, so as to determine whether the air conditioner indoor unit generates an overheating phenomenon according to the re-determined maximum temperature, and controlling the operation of the load of the air conditioner according to the temperature interval to which the re-determined maximum temperature belongs in the preset temperature range under the condition that the air conditioner indoor unit generates the overheating phenomenon; and under the condition that the overheating phenomenon of the air conditioner internal unit belongs to a third stage overheating phenomenon, if the redetermined highest temperature is still greater than or equal to a third set temperature threshold value after the set time, cutting off the power supply of a direct current fan component, a display component, a multimedia component and a loudspeaker component of the air conditioner, and controlling a radiating component of the air conditioner to maintain the set high-speed operation.
Therefore, according to the scheme of the invention, the current temperature of the main heating components of the air conditioner indoor unit is monitored, whether the current temperature meets a plurality of preset threshold values is judged, protection mechanisms such as accelerating heat dissipation, reducing heat accumulation, lightening load or closing load are adopted, unsafe factors such as fire caused by overheating of the air conditioner indoor unit are further reduced, the internal fire burning of the air conditioner caused by overheating of the main components of the indoor unit can be avoided by arranging the overheating protection mechanism on the indoor unit, and the safety of the air conditioner is improved.
The mode switching operation in the protection mechanism is a mechanism for reducing the load or turning off the load only when the temperature is not reduced all the time in order to accelerate heat dissipation or reduce heat accumulation.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a thermal protection device of an air conditioner indoor unit according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a relationship between related components and modules in an internal thermal protection mechanism;
FIG. 3 is a schematic view of a display unit in an internal thermal protection mechanism;
FIG. 4 is a final relationship table (except for maintaining the current) for switching the protection mechanism mode in the internal thermal protection mechanism;
FIG. 5 is a flowchart illustrating an operation of an embodiment of a thermal protection circuit control method;
FIG. 6 is a flowchart illustrating operation of an embodiment of a first stage thermal protection mechanism in a thermal protection circuit control method;
FIG. 7 is a flowchart illustrating an operation of a second stage heating protection mechanism in the thermal protection circuit control method according to an embodiment;
FIG. 8 is a flowchart illustrating an operation of a third stage heating protection mechanism in the thermal protection circuit control method according to an embodiment;
fig. 9 is a schematic flow chart illustrating a thermal protection method for an air conditioner indoor unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the invention, a thermal protection device of an air conditioner indoor unit is provided. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The thermal protection device of the air conditioner indoor unit can comprise: a monitoring unit and a control unit.
Wherein the monitoring unit is configured to monitor a current temperature of each of n heat-generating components of the air conditioner internal unit, wherein n is a positive integer. n of said heat-generating components (i.e., primary heat-generating components), comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component.
The control unit is configured to determine the highest temperature (such as the highest temperature T) of n current temperatures corresponding to the n heat generating componentsMAX) And determining whether the overheating phenomenon occurs in the air conditioner indoor unit according to the highest temperature.
Specifically, in any operation mode of the air conditioner except the standby mode, the control unit of the air conditioner component monitors the real-time temperature of the main heat generating components through the temperature monitoring modules distributed at various positions on the multimedia component, the display component, the air conditioner component and the direct current fan componentDegree TA1，…TAn，TB1，…TBn，TC1，…TCn，TD1，…TDn. The control unit judges all the monitored component temperatures T through logicA1，…TAn，TB1，…TBn，TC1，…TCn，TD1，…TDnMaximum temperature T of middleMAXFollowed by a logical decision TMAXAnd selecting which protection action is taken according to the magnitude relation of each preset temperature threshold value.
In some embodiments, the preset temperature range includes: by setting a first temperature threshold (e.g. first temperature threshold T)1) A second set temperature threshold (e.g. a second temperature threshold T)2) And a third set temperature threshold (e.g., a third temperature threshold T)3) The temperature range of the composition.
In particular, at least three temperature thresholds are preset, wherein a first temperature threshold T1< second temperature threshold T2< third temperature threshold T3… … are provided. The control unit judges whether the monitored temperatures exceed three or more temperature thresholds preset in the scheme of the invention through program logic, wherein the three or more thresholds include, but are not limited to, setting, adjustment and the like through factory preset or user-defined. And if the maximum threshold value is exceeded, performing corresponding protection action according to the exceeded maximum threshold value.
The control unit determines whether the air conditioner indoor unit generates an overheating phenomenon according to the highest temperature, and the control unit comprises any one of the following determination conditions:
the first determination case: and if the highest temperature is less than the first set temperature threshold, determining that the air conditioner internal unit does not overheat, controlling the air conditioner to continuously operate according to the current operation mode, and controlling the heat dissipation component of the air conditioner to operate at a set low speed.
Specifically, when the control unit judges the highest temperature TMAX< first temperature threshold T1In the meantime, the air conditioner maintains the existing operation state and mode according to the setting, does not do any protection action or prompt, and simultaneously has the heat dissipation partThe member is kept running at low speed.
Second determination case: and if the maximum temperature is greater than or equal to the first set temperature threshold and less than the second set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a first-stage overheating phenomenon.
Specifically, when the control unit determines that the first temperature threshold T is set1Maximum temperature T is less than or equal toMAX< second temperature threshold T2At that time, an instruction is issued to the multimedia component.
The third determination scenario: and if the maximum temperature is greater than or equal to the second set temperature threshold and less than the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a second-stage overheating phenomenon.
Specifically, when the control unit determines that the second temperature threshold T is set2Maximum temperature T is less than or equal toMAX< third temperature threshold T3At that time, an instruction is issued to the multimedia component.
The third determination scenario: and if the maximum temperature is greater than or equal to the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a third-stage overheating phenomenon.
Specifically, when the control unit determines that the second temperature threshold T is set2Maximum temperature T is less than or equal toMAXAt that time, an instruction is issued to the multimedia component.
The control unit is further configured to initiate a reminding message of the overheating phenomenon of the air conditioner internal unit if the overheating phenomenon of the air conditioner internal unit occurs, and control the operation of the load of the air conditioner according to the temperature range to which the highest temperature belongs in the preset temperature range, so as to realize the thermal protection control of the air conditioner internal unit. The load of the air conditioner includes: at least one of a heat radiating part, a compressor and a direct current fan part of the air conditioner.
Wherein, the related parts in the internal thermal protection mechanism comprise: display element, horn part, multimedia part, air conditioner part, direct current fan part, radiating part etc. wherein respectively have one or more temperature monitoring module on multimedia part, air conditioner part, direct current fan part, the display element, have the control unit on the air conditioner part, the display element contains: the liquid crystal display, dot matrix display screen, charactron show the module that etc. can show, temperature monitoring module contains: temperature sensing devices such as temperature sensing bulbs, thermocouples and thermistors.
Therefore, the current temperature of main heating components of the air conditioner indoor unit is monitored, whether the current temperature meets a plurality of preset thresholds is judged, protection mechanisms such as accelerating heat dissipation, reducing heat accumulation, lightening load or closing load are adopted, unsafe factors such as fire caused by overheating of the air conditioner indoor unit are further reduced, the overall safety of the air conditioner is improved, and meanwhile, the experience of a user on the heat protection mechanism provided by the scheme of the invention is improved through different preset thresholds. Therefore, the internal ignition and combustion of the air conditioner caused by the overheating of main parts of the internal machine parts are avoided, the user experience of a thermal protection mechanism is improved, and the safety and the reliability of the operation of the air conditioner are improved.
In some embodiments, the control unit initiates a reminding message of the overheating phenomenon of the air conditioner indoor unit, including any one of the following reminding situations:
the first alert scenario: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, displaying a reminding message of the first-stage overheating phenomenon of the air conditioner indoor unit through a display part in a multimedia part of the air conditioner, and displaying a first set color for color warning on a frame of the display part in the multimedia part of the air conditioner.
Specifically, the first set color is, for example, orange. When the control unit judges the first temperature threshold T1Maximum temperature T is less than or equal toMAX< second temperature threshold T2When the air conditioner is used, the multimedia component displays that the temperature in the air conditioner is slightly higher, namely the air conditioner is about to enter an autonomous heat dissipation mode through the display component, and meanwhile, the frame of the display component displays a set color such as an orange frame to prompt a user to enter a first-stage thermal protection mechanism.
The second alert scenario: the overheated phenomenon that appears in the air conditioner internal unit belongs to the overheated condition of phenomenon of second stage under, through display element in the multimedia component of air conditioner shows the overheated warning message of phenomenon of second stage appears in the air conditioner internal unit the frame of display element shows that the second sets for the colour and carries out the colour warning in the multimedia component of air conditioner, reduces the broadcast volume and the demonstration luminance of multimedia component, and pass through loudspeaker part in the multimedia component carries out the sound warning with first volume of setting for and the first speed of a voice of setting for.
Specifically, the second set color is, for example, red. When the control unit judges that the second temperature threshold value T is2Maximum temperature T is less than or equal toMAX< third temperature threshold T3During the time, the multimedia component shows through the display part that "the inside high temperature of air conditioner is about to get into quick heat dissipation mode", and the display part frame shows simultaneously and sets for the colour like red frame, reduces the video volume of present broadcast, reduces present demonstration luminance to play the slower warning audible cue of speed of speech with middle volume through loudspeaker part, in order to indicate the user will get into second stage thermal protection mechanism.
A third alert scenario: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the third-stage overheating phenomenon of the air conditioner indoor unit, a display area of the display part in the multimedia part of the air conditioner displays a third set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out by setting the volume and the speed of a voice through a horn part in the multimedia part with the second set volume and the second set speed of a voice.
Specifically, the third set color is, for example, red. When the control unit judges that the second temperature threshold value T is2Maximum temperature T is less than or equal toMAXWhen the air conditioner is in a forced heat dissipation mode, the multimedia component displays that the temperature inside the air conditioner is ultrahigh through the display component, and simultaneously the display component displays red background color, so that the volume of a currently played video is reduced, the current display brightness is reduced, and a prompt sound prompt with rapid speech speed is played at medium and high volume through the loudspeaker component so as to prompt a user to enter a third-stage thermal protection mechanism.
Therefore, by monitoring the current temperature of the multimedia component with larger heat productivity, the display component, the air conditioner component, the direct current fan component and other main heating components of the air conditioner indoor unit, adopting but not limited to brightness reduction, volume reduction, display closing, load closing and other protection mechanisms, and adopting but not limited to display reminding, display + sound warning, display closing + sound + load and other reminding modes, the comprehensiveness of a user on the heat protection mechanism is improved, the possibility of ignition of the air conditioner is reduced, and the running reliability of the whole air conditioner is improved.
In some embodiments, the controlling unit controls the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, including: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, performing thermal protection on the first-stage overheating phenomenon.
Wherein the first-stage overheating phenomenon is thermally protected, including any of the following first-stage overheating protection scenarios:
first stage overheat protection scenario: and controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle speed. And under the condition that the current rotating speed of the heat radiating part is lower than the set middle speed, controlling the heat radiating part to be adjusted to the set middle speed from the current rotating speed. Specifically, the current rotation speed is maintained if the rotation speed of the heat radiating member is not less than the medium speed, and the control unit adjusts the rotation speed of the heat radiating member to the medium speed operation if the rotation speed of the heat radiating member is less than the medium speed.
Second phase over-temperature protection scenario: and in the refrigeration mode, if the current frequency of the compressor is not lower than a set intermediate frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is lower than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation.
Third stage first overheat protection scenario: and in the refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is higher than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
Specifically, when the current air conditioner operation mode is cooling (including a cooling mode, a dehumidification mode, cooling in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not lower than the intermediate frequency, and the control unit switches the compressor frequency to the intermediate frequency if the compressor frequency is lower than the intermediate frequency. And if the rotating speed of the direct current fan component is not higher than the middle speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the middle speed, switching the rotating speed of the direct current fan component to the middle speed by the control unit.
A fourth first stage overheat protection scenario: and in the heating mode, if the current frequency of the compressor is not higher than the set intermediate frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is higher than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation.
Fifth stage first overheat protection scenario: and under the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
Specifically, if the current air-conditioning operation mode is heating (including a heating mode, heating in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not higher than the intermediate frequency, and the control unit switches the compressor frequency to the intermediate frequency if higher than the intermediate frequency. And if the rotating speed of the direct current fan component is not lower than the middle speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the middle speed, switching the rotating speed of the direct current fan component to the middle speed by the control unit.
Sixth first stage overheat protection scenario: and in the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed. Specifically, if the current air conditioner operation mode is the air supply mode, the current rotational speed is maintained if the rotational speed of the dc fan section is not lower than the middle speed, and if the rotational speed is lower than the middle speed, the control unit switches the rotational speed of the dc fan section to the middle speed.
In some embodiments, the control unit controls an operation of a load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, further comprising: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, performing thermal protection on the second-stage overheating phenomenon.
Wherein the thermal protection of the second stage overheating phenomenon is performed, including any one of the following second stage overheating protection situations:
first and second stage overheat protection scenarios: and controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle-high speed. And controlling the heat dissipation component to be adjusted to the set middle-high speed from the current rotating speed under the condition that the current rotating speed of the heat dissipation component is lower than the set middle-high speed. Specifically, the current rotational speed is maintained if the rotational speed of the heat radiating member is not lower than the medium-high speed, and the control unit adjusts the rotational speed of the heat radiating member to the medium-high speed operation if the rotational speed of the heat radiating member is lower than the medium-high speed.
Second stage overheat protection scenario: and under the refrigeration mode, if the current frequency of the compressor is not lower than the set medium-high frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is lower than the set medium-high frequency, controlling the compressor to be adjusted to the set medium-high frequency from the current frequency.
Third stage two overheat protection scenario: in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle-low speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is higher than the set middle-low speed, controlling the direct current fan component to be adjusted to the set middle-low speed from the current rotating speed.
Specifically, when the current air-conditioning operation mode is cooling (including a cooling mode, a dehumidification mode, cooling in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not lower than the medium-high frequency, and the control unit switches the compressor frequency to the medium-high frequency if the compressor frequency is lower than the medium-high frequency. And if the rotating speed of the direct current fan component is not higher than the medium-low speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the medium-low speed, switching the rotating speed of the direct current fan component to the medium-low speed by the control unit.
A fourth stage two overheat protection scenario: in the heating mode, if the current frequency of the compressor is not higher than a set middle-low frequency, controlling the compressor to maintain the current frequency; and if the current frequency of the compressor is higher than the set middle-low frequency, controlling the compressor to be adjusted to the set middle-low frequency from the current frequency to operate.
Fifth stage overheat protection scenario: and under the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed.
Specifically, if the current air-conditioning operation mode is heating (including a heating mode, heating in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not higher than the medium-low frequency, and the control unit switches the compressor frequency to the medium-low frequency if higher than the medium-low frequency. And if the rotating speed of the direct current fan component is not lower than the medium-high speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the medium-high speed, switching the rotating speed of the direct current fan component to the medium-high speed by the control unit.
Sixth stage second overheat protection scenario: and under the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed. Specifically, if the current air conditioner operation mode is the air supply mode, the current rotational speed is maintained if the rotational speed of the dc fan section is not lower than the medium-high speed, and the control unit switches the rotational speed of the dc fan section to the medium-high speed if the rotational speed of the dc fan section is lower than the medium-high speed.
In some embodiments, the controlling unit controls the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, including: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to the third-stage overheating phenomenon, performing thermal protection on the third-stage overheating phenomenon.
Wherein, the thermal protection is carried out on the third-stage overheating phenomenon, and any one of the following third-stage overheating protection situations is included:
first third stage overheat protection scenario: and controlling the heat radiating component to maintain the current rotating speed under the condition that the current rotating speed of the heat radiating component is not lower than the set high speed. And controlling the heat dissipation component to be adjusted to the set high-speed operation from the current rotating speed when the current rotating speed of the heat dissipation component is lower than the set high speed. Specifically, the current rotational speed is maintained if the rotational speed of the heat radiating member is not lower than the high speed, and the control unit adjusts the rotational speed of the heat radiating member to a high-speed operation if the rotational speed of the heat radiating member is lower than the high speed.
Second third stage overheat protection scenario: and in the refrigeration mode, if the current frequency of the compressor is not lower than the set high frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is lower than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation.
A third stage overheat protection scenario: in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set low speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is higher than the set low speed, controlling the direct current fan component to be adjusted to the set low speed from the current rotating speed.
Specifically, when the current air-conditioning operation mode is cooling (including a cooling mode, a dehumidification mode, cooling in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not lower than the high frequency, and the control unit switches the compressor frequency to the high frequency if the compressor frequency is lower than the high frequency. And if the rotating speed of the direct current fan component is not higher than the low speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the low speed, switching the rotating speed of the direct current fan component to the low speed by the control unit.
A fourth stage overheat protection scenario: in the heating mode, if the current frequency of the compressor is not higher than the set low frequency, controlling the compressor to maintain the current frequency; and if the current frequency of the compressor is higher than the set low frequency, controlling the compressor to be adjusted from the current frequency to the set low frequency for operation.
Fifth stage overheat protection scenario: and under the heating mode, if the current rotating speed of the direct current fan component is not lower than the set high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
Specifically, if the current air-conditioning operation mode is heating (including a heating mode, heating in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not higher than the low frequency, and the control unit switches the compressor frequency to the low frequency if higher than the low frequency. And if the rotating speed of the direct current fan component is not lower than the high speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the high speed, switching the rotating speed of the direct current fan component to the high speed by the control unit.
A sixth, third stage overheat protection scenario: and under the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
Specifically, if the current air conditioner operation mode is the air supply mode, the current rotational speed is maintained if the dc fan part rotational speed is not lower than the high speed, and if lower than the high speed, the control unit switches the dc fan part rotational speed to the high speed.
In some embodiments, further comprising: and a process of performing cycle control on the thermal protection control of the air conditioner indoor unit.
The control unit is further configured to control the temperature of the heat exchanger to be at a preset temperature according to the maximum temperatureThe temperature range is controlled to control the operation of the load of the air conditioner, and then the highest temperature (such as the highest temperature T) of n current temperatures corresponding to the n heat generating components is determined againMAX) And determining whether the air conditioner indoor unit has an overheating phenomenon according to the redetermined highest temperature, and controlling the operation of the load of the air conditioner according to the temperature range to which the redetermined highest temperature belongs in the preset temperature range under the condition that the air conditioner indoor unit has the overheating phenomenon.
Specifically, in the case that the overheating phenomenon occurring in the air conditioner internal unit belongs to the first-stage overheating phenomenon, after the control unit completes the first-stage protection mechanism operation, if the highest temperature T is reachedMAX< first temperature threshold T1Then the control unit returns to the original normal operation mode.
Under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to the second-stage overheating phenomenon, after the control unit finishes the second-stage protection mechanism operation, if the first temperature threshold T is higher than the first temperature threshold T1Maximum temperature T is less than or equal toMAX< second temperature threshold T2Then the control unit switches to the first stage protection mechanism to make corresponding adjustment. If the third temperature threshold T3Maximum temperature T is less than or equal toMAXThen the control unit goes to the third stage protection mechanism to make corresponding adjustment.
Under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to the third-stage overheating phenomenon, after the control unit finishes the third-stage protection mechanism operation, if the second temperature threshold T is2Maximum temperature T is less than or equal toMAX< third temperature threshold T3Then the control unit switches to the second stage protection mechanism to make corresponding adjustment.
And under the condition that the overheating phenomenon of the air conditioner internal unit belongs to a third stage overheating phenomenon, if the redetermined highest temperature is still greater than or equal to a third set temperature threshold value after the set time, cutting off the power supply of a direct current fan component, a display component, a multimedia component and a loudspeaker component of the air conditioner, and controlling a radiating component of the air conditioner to maintain the set high-speed operation.
Specifically, in the case where the overheating phenomenon occurring in the air conditioner internal unit belongs to the third stage overheating phenomenon, if a certain time t1(e.g., about 1 minute to 5 minutes, or longer, based on factory setting or user setting), the control unit determines the third temperature threshold T3Still less than or equal to the maximum temperature TMAXIn the meantime, the control unit cuts off the power supply to the dc fan part, the display part, the speaker part, the multimedia part, and the like to stop the operation of these loads, and the heat radiating part is still kept operating at a high speed. After that, if a certain time t passes2(e.g., about 1 minute to 5 minutes, or longer, based on factory setting or user setting), the control unit determines the third temperature threshold T3Still less than or equal to the maximum temperature TMAXWhen the air conditioner is used, the control unit cuts off the power supply of the heat dissipation part and the air conditioner part, so that the whole air conditioner is uncharged and can naturally dissipate heat.
Through a large number of tests, the technical scheme of the invention judges whether the current temperature of the main heating components of the air conditioner indoor unit meets a plurality of preset thresholds or not by monitoring the current temperature of the main heating components of the air conditioner indoor unit, adopts protection mechanisms such as protection mechanisms for accelerating heat dissipation, reducing heat accumulation, lightening load or closing load and the like, further reduces unsafe factors such as fire and the like caused by overheating of the air conditioner indoor unit, can avoid the fire and combustion inside the air conditioner when the main components of the indoor unit are overheated by arranging the overheating protection mechanism on the indoor unit, and improves the safety of the air conditioner.
According to the embodiment of the invention, the air conditioner corresponding to the thermal protection device of the air conditioner indoor unit is further provided. The air conditioner may include: the thermal protection device of the air conditioner indoor unit is described above.
In some schemes, the air conditioner is protected by acquiring the outdoor temperature, the influence of the temperature of the external environment on each part of the air conditioner is considered, and the protection of potential safety hazards caused by abnormal heating of each part inside the air conditioner cannot be realized.
In some schemes, the opening and closing of the inner fan and the outer fan of the air conditioner are adjusted by monitoring the environmental temperature of the inner ring, so that the influence of overhigh pressure and the like on the air conditioner in a severe environment is avoided.
In some embodiments, the present invention provides a method and an apparatus for controlling a thermal protection circuit, which determine whether current temperatures of main heating components of an air conditioner internal unit meet a plurality of preset thresholds by monitoring the current temperatures, and adopt protection mechanisms such as accelerating heat dissipation, reducing heat accumulation, reducing load or turning off load, so as to further reduce unsafe factors such as fire caused by overheating of the air conditioner internal unit, improve the overall safety of the air conditioner, and improve user experience of the thermal protection mechanism provided by the present invention through different preset thresholds. Therefore, the internal ignition and combustion of the air conditioner caused by the overheating of main parts of the internal machine parts are avoided, the user experience of a thermal protection mechanism is improved, and the safety and the reliability of the operation of the air conditioner are improved.
Specifically, according to the scheme of the invention, by monitoring the current temperature of the multimedia component with larger heat productivity, the display component, the air conditioner component, the direct current fan component and other main heating components of the air conditioner internal unit, adopting but not limited to a protection mechanism of reducing brightness, reducing volume, turning off display, turning off load and the like, and adopting but not limited to a reminding mode of displaying reminding, displaying + sound warning, turning off display + sound + load and the like, the comprehensiveness of a user on the heat protection mechanism is improved, the possibility of ignition of the air conditioner is reduced, and the reliability of the operation of the whole air conditioner is improved.
The following describes an exemplary implementation process of the scheme of the present invention with reference to the examples shown in fig. 2 to 8.
Fig. 2 is a schematic structural diagram of an embodiment of a relationship between related components and modules in an internal thermal protection mechanism.
As shown in fig. 2, in the solution of the present invention, the related components in the internal thermal protection mechanism include, but are not limited to, the following components or modules: the temperature monitoring system comprises a display component, a loudspeaker component, a multimedia component, an air conditioner component, a direct current fan component, a heat dissipation component and the like, wherein the multimedia component, the air conditioner component, the direct current fan component and the display component are respectively provided with one or more temperature monitoring modules, the air conditioner component is provided with a control unit, the display component comprises but is not limited to modules which can display such as a liquid crystal display screen, a dot matrix display screen and a nixie tube display, and the temperature monitoring modules comprise but is not limited to temperature sensing devices such as a temperature sensing bulb, a thermocouple and a thermistor.
The air conditioner component mainly refers to a controller part of the air conditioner and comprises a control unit, a power supply and communication unit with an external machine, a power supply and communication unit with a multimedia component, a power supply and driving unit with a direct current fan component, a control heat dissipation component unit, a power supply conversion unit, a driving air conditioner movement mechanism unit, a driving air conditioner other module and the like.
Fig. 3 is a schematic view showing a display form of a display part in the internal thermal protection mechanism. As shown in fig. 3, the display form of the display component in the internal thermal protection mechanism may display text information, and may also display corresponding warning colors according to the warning degree required by the display content while displaying the text information. The warning color can only display the color of the frame, and can also display the warning color on the display interface.
In the scheme of the invention, at least three temperature thresholds are preset, wherein a first temperature threshold T1< second temperature threshold T2< third temperature threshold T3… … are provided. The control unit judges whether the monitored temperatures exceed three or more temperature thresholds preset in the scheme of the invention through program logic, wherein the three or more thresholds include, but are not limited to, setting, adjustment and the like through factory preset or user-defined. And if the maximum threshold value is exceeded, performing corresponding protection action according to the exceeded maximum threshold value.
Fig. 4 is a final relationship table (except for maintaining the current) for switching the protection mechanism mode in the internal thermal protection mechanism. As shown in fig. 4, the rotation speed according to the solution of the present invention includes, but is not limited to, the following: low speed, medium-low speed, medium-high speed, high speed; the frequencies described in the scheme of the present invention include, but are not limited to, the following: low frequency, medium and high frequency; the refrigeration in the scheme of the invention comprises but is not limited to operation modes with the final effects equivalent to the refrigeration mode, such as a refrigeration mode, a dehumidification mode, refrigeration in an automatic mode and the like; the heating mode according to the aspect of the present invention includes, but is not limited to, a heating mode, an operation mode having a final effect equivalent to that of the heating mode, such as heating in an automatic mode.
In any operation mode of the air conditioner except the standby mode, the control unit of the air conditioner component monitors the real-time temperature T of the main heating components through the temperature monitoring modules distributed at various positions on the multimedia component, the display component, the air conditioner component and the direct current fan componentA1，…TAn，TB1，…TBn，TC1，…TCn，TD1，…TDn. The control unit judges all the monitored component temperatures T through logicA1，…TAn，TB1，…TBn，TC1，…TCn，TD1，…TDnMaximum temperature T of middleMAXFollowed by a logical decision TMAXThe magnitude relation with each temperature threshold value preset in the scheme of the invention is used for selecting which protection action is taken.
Fig. 5 is a flowchart illustrating an operation of an embodiment of a thermal protection circuit control method. As shown in fig. 5, the operation flow of the thermal protection circuit control method is as follows:
step 1, when the control unit judges the highest temperature TMAX< first temperature threshold T1In the meantime, the air conditioner maintains the existing operation state and mode according to the setting, does not make any protection action or prompt, and the heat dissipation component keeps operating at a low speed.
Step 2, when the control unit judges that the first temperature threshold value T is1Maximum temperature T is less than or equal toMAX< second temperature threshold T2When the air conditioner is started, the multimedia component sends an instruction, the multimedia component displays that the temperature in the air conditioner is slightly higher and the air conditioner is about to enter an autonomous heat dissipation mode through the display component, and meanwhile, the frame of the display component displays a set color such as an orange frame to prompt a user to enter a first-stage heat protection mechanism.
Fig. 6 is a flowchart illustrating an operation of the first stage thermal protection mechanism in the thermal protection circuit control method according to an embodiment. As shown in fig. 6, the operation flow of the first-stage thermal protection mechanism in the thermal protection circuit control method includes:
maintaining the current rotating speed if the rotating speed of the heat dissipation component is not lower than the medium speed, and adjusting the rotating speed of the heat dissipation component to the medium speed to operate by the control unit if the rotating speed of the heat dissipation component is lower than the medium speed.
When the current air conditioner operation mode is refrigeration (including refrigeration mode, dehumidification mode, refrigeration in automatic mode, etc.), if the frequency of the compressor is not lower than the intermediate frequency, the current frequency is maintained, and if the frequency is lower than the intermediate frequency, the control unit switches the frequency of the compressor to the intermediate frequency; and if the rotating speed of the direct current fan component is not higher than the middle speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the middle speed, switching the rotating speed of the direct current fan component to the middle speed by the control unit.
If the current air conditioner operation mode is heating (including heating mode, heating in automatic mode, etc.), if the compressor frequency is not higher than the intermediate frequency, maintaining the current frequency, if the compressor frequency is higher than the intermediate frequency, switching the compressor frequency to the intermediate frequency by the control unit; and if the rotating speed of the direct current fan component is not lower than the middle speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the middle speed, switching the rotating speed of the direct current fan component to the middle speed by the control unit.
If the current air conditioner operation mode is an air supply mode, maintaining the current rotating speed if the rotating speed of the direct current fan component is not lower than the medium speed, and if the rotating speed of the direct current fan component is lower than the medium speed, switching the rotating speed of the direct current fan component to the medium speed by the control unit.
After the control unit finishes the first stage protection mechanism operation, if the highest temperature T is reachedMAX< first temperature threshold T1Then the control unit returns to the original normal operation mode.
Step 3, when the control unit judges that the second temperature threshold value T is2Maximum temperature T is less than or equal toMAX< third temperature threshold T3When the temperature of the air conditioner is too high, the multimedia component enters a quick heat dissipation mode, and the frame of the display component displays a set color like a red frame, so that the volume of a current playing video is reduced, the current display brightness is reduced, and a warning sound prompt with a slow speech speed is played at a middle volume through the loudspeaker component so as to prompt a user to enter a second-stage thermal protection mechanism.
FIG. 7 is a flowchart illustrating an operation of a second stage heating protection mechanism in the thermal protection circuit control method according to an embodiment. As shown in fig. 7, the operation flow of the second stage heating protection mechanism in the thermal protection circuit control method includes:
if the rotating speed of the heat dissipation part is not lower than the medium-high speed, the current rotating speed is maintained, and if the rotating speed of the heat dissipation part is lower than the medium-high speed, the control unit adjusts the rotating speed of the heat dissipation part to the medium-high speed operation.
When the current air conditioner operation mode is refrigeration (including a refrigeration mode, a dehumidification mode, refrigeration in an automatic mode and the like), if the frequency of the compressor is not lower than the medium-high frequency, maintaining the current frequency, and if the frequency of the compressor is lower than the medium-high frequency, switching the frequency of the compressor to the medium-high frequency by the control unit; and if the rotating speed of the direct current fan component is not higher than the medium-low speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the medium-low speed, switching the rotating speed of the direct current fan component to the medium-low speed by the control unit. In the scheme of the invention, the heat dissipation mechanism not only lightens the load or closes the load to dissipate heat, but also reduces the temperature of the inner machine cavity by adopting the characteristic of heat exchange of the air conditioner.
If the current air conditioner operation mode is heating (including heating mode, heating in automatic mode, etc.), if the compressor frequency is not higher than the medium-low frequency, the current frequency is maintained, and if the compressor frequency is higher than the medium-low frequency, the control unit switches the compressor frequency to the medium-low frequency; and if the rotating speed of the direct current fan component is not lower than the medium-high speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the medium-high speed, switching the rotating speed of the direct current fan component to the medium-high speed by the control unit.
If the current air conditioner operation mode is an air supply mode, maintaining the current rotating speed if the rotating speed of the direct current fan component is not lower than the medium-high speed, and switching the rotating speed of the direct current fan component to the medium-high speed by the control unit if the rotating speed of the direct current fan component is lower than the medium-high speed.
After the control unit finishes the second stage protection mechanism operation, if the first temperature threshold T is reached1Maximum temperature T is less than or equal toMAX< second temperature threshold T2Then the control unit switches to the first stage protection mechanism to make corresponding adjustment.
Step 4, when the control unit judges that the third temperature threshold value T is3Maximum temperature T is less than or equal toMAXWhen it is, it gives an instruction to the multimedia component, and the multimedia component passes throughThe display part displays that the temperature inside the air conditioner is ultrahigh and the air conditioner is about to enter a forced heat dissipation mode, displays red ground color at the same time, reduces the volume of the currently played video, reduces the current display brightness, and plays a prompt sound prompt with a rapid voice speed at a medium-high volume through the horn part so as to prompt a user to enter a third-stage thermal protection mechanism.
Fig. 8 is a flowchart illustrating an operation of a third stage heating protection mechanism in the thermal protection circuit control method according to an embodiment. As shown in fig. 8, the operation flow of the third-stage heating protection mechanism in the thermal protection circuit control method includes:
maintaining the current rotating speed if the rotating speed of the heat dissipation part is not lower than the high speed, and adjusting the rotating speed of the heat dissipation part to be in high-speed operation if the rotating speed of the heat dissipation part is lower than the high speed by the control unit.
When the current air conditioner operation mode is refrigeration (including a refrigeration mode, a dehumidification mode, refrigeration in an automatic mode and the like), if the frequency of the compressor is not lower than high frequency, maintaining the current frequency, and if the frequency is lower than the high frequency, switching the frequency of the compressor to the high frequency by the control unit; and if the rotating speed of the direct current fan component is not higher than the low speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the low speed, switching the rotating speed of the direct current fan component to the low speed by the control unit.
If the current air conditioner operation mode is heating (including heating mode, heating in automatic mode, etc.), if the frequency of the compressor is not higher than the low frequency, the current frequency is maintained, and if the frequency is higher than the low frequency, the control unit switches the frequency of the compressor to the low frequency; and if the rotating speed of the direct current fan component is not lower than the high speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the high speed, switching the rotating speed of the direct current fan component to the high speed by the control unit.
If the current air conditioner operation mode is an air supply mode, maintaining the current rotating speed if the rotating speed of the direct current fan component is not lower than the high speed, and if the rotating speed of the direct current fan component is lower than the high speed, switching the rotating speed of the direct current fan component to the high speed by the control unit.
After the control unit finishes the operation of the third-stage protection mechanism, if the second temperature threshold T is higher than the first temperature threshold T2Maximum temperature T is less than or equal toMAX< third temperature threshold T3Then the control unit shifts to the second stage protectionThe mechanism is adjusted accordingly. If a certain time t1(e.g., about 1 minute to 5 minutes, or longer, based on factory setting or user setting), the control unit determines the third temperature threshold T3Still less than or equal to the maximum temperature TMAXIn the meantime, the control unit cuts off the power supply to the dc fan part, the display part, the speaker part, the multimedia part, and the like to stop the operation of these loads, and the heat radiating part is still kept operating at a high speed. After that, if a certain time t passes2(e.g., about 1 minute to 5 minutes, or longer, based on factory setting or user setting), the control unit determines the third temperature threshold T3Still less than or equal to the maximum temperature TMAXWhen the air conditioner is used, the control unit cuts off the power supply of the heat dissipation part and the air conditioner part, so that the whole air conditioner is uncharged and can naturally dissipate heat.
In the scheme of the invention, the air conditioner has a corresponding over-temperature protection mechanism, so that the overall reliability of the air conditioner internal unit such as fire prevention is protected, and the user experience is improved. Specifically, through real-time monitoring, according to different preset threshold values, three or more than three protection mechanism operations can be set, effective protection measures can be taken, the flexibility of setting of a user on a thermal protection mechanism is improved, the whole air conditioner indoor unit can be protected from dangerous factors such as fire caused by overheating, and the reliability of the air conditioner is effectively improved.
Since the processing and functions of the air conditioner of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 1, the description of this embodiment is not given in detail, and reference may be made to the related descriptions in the embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention is adopted, the current temperature of the main heating part of the air conditioner indoor unit is monitored, whether the current temperature meets a plurality of preset threshold values is judged, and the protection mechanisms of accelerating heat dissipation, reducing heat accumulation, lightening load or closing load and the like are adopted, so that unsafe factors such as fire and the like caused by overheating of the air conditioner indoor unit are further reduced, the fire and combustion inside the air conditioner caused by overheating of the main part of the indoor unit are avoided, the experience of a user on the thermal protection mechanism is improved, and the safety and the reliability of the operation of the air conditioner are improved.
According to an embodiment of the present invention, there is also provided a thermal protection method for an air conditioner internal unit corresponding to an air conditioner, as shown in fig. 9, which is a schematic flow chart of an embodiment of the method of the present invention. The thermal protection method of the air conditioner indoor unit comprises the following steps: step S110 to step S130.
At step S110, the current temperature of each of n heat generating components of the air conditioner internal unit is monitored, where n is a positive integer. n of said heat-generating components (i.e., primary heat-generating components), comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component.
At step S120, the highest temperature (e.g., the highest temperature T) of the n current temperatures corresponding to the n heat-generating components is determinedMAX) And determining whether the overheating phenomenon occurs in the air conditioner indoor unit according to the highest temperature.
Specifically, in any operation mode of the air conditioner except the standby mode, the control unit of the air conditioner component monitors the real-time temperature T of the main heat generating components through the temperature monitoring modules distributed at various positions on the multimedia component, the display component, the air conditioner component and the direct current fan componentA1，…TAn，TB1，…TBn，TC1，…TCn，TD1，…TDn. The control unit judges all the monitored component temperatures T through logicA1，…TAn，TB1，…TBn，TC1，…TCn，TD1，…TDnMaximum temperature T of middleMAXFollowed by a logical decision TMAXAnd selecting which protection action is taken according to the magnitude relation of each preset temperature threshold value.
In some embodiments, the preset temperature range includes: by setting a first temperature threshold (e.g. first temperature threshold T)1) A second set temperature threshold (e.g. a second temperature threshold T)2) And a third set temperature threshold (e.g., a third temperature threshold T)3) The temperature range of the composition.
Specifically, preset toAt least three temperature thresholds, wherein the first temperature threshold T1< second temperature threshold T2< third temperature threshold T3… … are provided. The control unit judges whether the monitored temperatures exceed three or more temperature thresholds preset in the scheme of the invention through program logic, wherein the three or more thresholds include, but are not limited to, setting, adjustment and the like through factory preset or user-defined. And if the maximum threshold value is exceeded, performing corresponding protection action according to the exceeded maximum threshold value.
And determining whether the overheating phenomenon occurs in the air conditioner indoor unit according to the highest temperature, wherein the determining comprises any one of the following determining conditions:
the first determination case: and if the highest temperature is less than the first set temperature threshold, determining that the air conditioner internal unit does not overheat, controlling the air conditioner to continuously operate according to the current operation mode, and controlling the heat dissipation component of the air conditioner to operate at a set low speed.
Specifically, when the control unit judges the highest temperature TMAX< first temperature threshold T1In the meantime, the air conditioner maintains the existing operation state and mode according to the setting, does not make any protection action or prompt, and the heat dissipation component keeps operating at a low speed.
Second determination case: and if the maximum temperature is greater than or equal to the first set temperature threshold and less than the second set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a first-stage overheating phenomenon.
Specifically, when the control unit determines that the first temperature threshold T is set1Maximum temperature T is less than or equal toMAX< second temperature threshold T2At that time, an instruction is issued to the multimedia component.
The third determination scenario: and if the maximum temperature is greater than or equal to the second set temperature threshold and less than the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a second-stage overheating phenomenon.
Specifically, when the control unit determines that the second temperature threshold T is set2Maximum temperature T is less than or equal toMAX< third temperature threshold T3When the temperature of the water is higher than the set temperature,an instruction is issued to the multimedia component.
The third determination scenario: and if the maximum temperature is greater than or equal to the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a third-stage overheating phenomenon.
Specifically, when the control unit determines that the second temperature threshold T is set2Maximum temperature T is less than or equal toMAXAt that time, an instruction is issued to the multimedia component.
At step S130, the control unit is further configured to initiate a warning message that the air conditioner internal unit is overheated if the air conditioner internal unit is overheated, and control operation of a load of the air conditioner according to a temperature range to which the highest temperature belongs in a preset temperature range, so as to implement thermal protection control on the air conditioner internal unit. The load of the air conditioner includes: at least one of a heat radiating part, a compressor and a direct current fan part of the air conditioner.
Wherein, the related parts in the internal thermal protection mechanism comprise: display element, horn part, multimedia part, air conditioner part, direct current fan part, radiating part etc. wherein respectively have one or more temperature monitoring module on multimedia part, air conditioner part, direct current fan part, the display element, have the control unit on the air conditioner part, the display element contains: the liquid crystal display, dot matrix display screen, charactron show the module that etc. can show, temperature monitoring module contains: temperature sensing devices such as temperature sensing bulbs, thermocouples and thermistors.
Therefore, the current temperature of main heating components of the air conditioner indoor unit is monitored, whether the current temperature meets a plurality of preset thresholds is judged, protection mechanisms such as accelerating heat dissipation, reducing heat accumulation, lightening load or closing load are adopted, unsafe factors such as fire caused by overheating of the air conditioner indoor unit are further reduced, the overall safety of the air conditioner is improved, and meanwhile, the experience of a user on the heat protection mechanism provided by the scheme of the invention is improved through different preset thresholds. Therefore, the internal ignition and combustion of the air conditioner caused by the overheating of main parts of the internal machine parts are avoided, the user experience of a thermal protection mechanism is improved, and the safety and the reliability of the operation of the air conditioner are improved.
In some embodiments, the prompting message for initiating the overheating phenomenon of the air conditioner indoor unit includes any one of the following prompting situations:
the first alert scenario: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, displaying a reminding message of the first-stage overheating phenomenon of the air conditioner indoor unit through a display part in a multimedia part of the air conditioner, and displaying a first set color for color warning on a frame of the display part in the multimedia part of the air conditioner.
Specifically, the first set color is, for example, orange. When the control unit judges the first temperature threshold T1Maximum temperature T is less than or equal toMAX< second temperature threshold T2When the air conditioner is used, the multimedia component displays that the temperature in the air conditioner is slightly higher, namely the air conditioner is about to enter an autonomous heat dissipation mode through the display component, and meanwhile, the frame of the display component displays a set color such as an orange frame to prompt a user to enter a first-stage thermal protection mechanism.
The second alert scenario: the overheated phenomenon that appears in the air conditioner internal unit belongs to the overheated condition of phenomenon of second stage under, through display element in the multimedia component of air conditioner shows the overheated warning message of phenomenon of second stage appears in the air conditioner internal unit the frame of display element shows that the second sets for the colour and carries out the colour warning in the multimedia component of air conditioner, reduces the broadcast volume and the demonstration luminance of multimedia component, and pass through loudspeaker part in the multimedia component carries out the sound warning with first volume of setting for and the first speed of a voice of setting for.
Specifically, the second set color is, for example, red. When the control unit judges that the second temperature threshold value T is2Maximum temperature T is less than or equal toMAX< third temperature threshold T3During the time, the multimedia component shows through display element that "the inside high temperature of air conditioner is about to get into quick heat dissipation mode", and display element frame shows simultaneously and sets for the colour like red frame, reduces the video volume of present broadcast, reduces present demonstration luminance to play the slower warning audible cue of speech rate with middle volume through loudspeaker component, in order to indicate the user will get into the second orderA segment thermal protection mechanism.
A third alert scenario: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the third-stage overheating phenomenon of the air conditioner indoor unit, a display area of the display part in the multimedia part of the air conditioner displays a third set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out by setting the volume and the speed of a voice through a horn part in the multimedia part with the second set volume and the second set speed of a voice.
Specifically, the third set color is, for example, red. When the control unit judges that the third temperature threshold T is3Maximum temperature T is less than or equal toMAXWhen the air conditioner is in a forced heat dissipation mode, the multimedia component displays that the temperature inside the air conditioner is ultrahigh through the display component, and simultaneously the display component displays red background color, so that the volume of a currently played video is reduced, the current display brightness is reduced, and a prompt sound prompt with rapid speech speed is played at medium and high volume through the loudspeaker component so as to prompt a user to enter a third-stage thermal protection mechanism.
Therefore, by monitoring the current temperature of the multimedia component with larger heat productivity, the display component, the air conditioner component, the direct current fan component and other main heating components of the air conditioner indoor unit, adopting but not limited to brightness reduction, volume reduction, display closing, load closing and other protection mechanisms, and adopting but not limited to display reminding, display + sound warning, display closing + sound + load and other reminding modes, the comprehensiveness of a user on the heat protection mechanism is improved, the possibility of ignition of the air conditioner is reduced, and the running reliability of the whole air conditioner is improved.
In some embodiments, controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range includes: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, performing thermal protection on the first-stage overheating phenomenon.
Wherein the first-stage overheating phenomenon is thermally protected, including any of the following first-stage overheating protection scenarios:
first stage overheat protection scenario: and controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle speed. And under the condition that the current rotating speed of the heat radiating part is lower than the set middle speed, controlling the heat radiating part to be adjusted to the set middle speed from the current rotating speed. Specifically, the current rotation speed is maintained if the rotation speed of the heat radiating member is not less than the medium speed, and the control unit adjusts the rotation speed of the heat radiating member to the medium speed operation if the rotation speed of the heat radiating member is less than the medium speed.
Second phase over-temperature protection scenario: and in the refrigeration mode, if the current frequency of the compressor is not lower than a set intermediate frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is lower than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation.
Third stage first overheat protection scenario: and in the refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is higher than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
Specifically, when the current air conditioner operation mode is cooling (including a cooling mode, a dehumidification mode, cooling in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not lower than the intermediate frequency, and the control unit switches the compressor frequency to the intermediate frequency if the compressor frequency is lower than the intermediate frequency. And if the rotating speed of the direct current fan component is not higher than the middle speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the middle speed, switching the rotating speed of the direct current fan component to the middle speed by the control unit.
A fourth first stage overheat protection scenario: and in the heating mode, if the current frequency of the compressor is not higher than the set intermediate frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is higher than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation.
Fifth stage first overheat protection scenario: and under the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
Specifically, if the current air-conditioning operation mode is heating (including a heating mode, heating in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not higher than the intermediate frequency, and the control unit switches the compressor frequency to the intermediate frequency if higher than the intermediate frequency. And if the rotating speed of the direct current fan component is not lower than the middle speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the middle speed, switching the rotating speed of the direct current fan component to the middle speed by the control unit.
Sixth first stage overheat protection scenario: and in the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed. Specifically, if the current air conditioner operation mode is the air supply mode, the current rotational speed is maintained if the rotational speed of the dc fan section is not lower than the middle speed, and if the rotational speed is lower than the middle speed, the control unit switches the rotational speed of the dc fan section to the middle speed.
In some embodiments, controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range further includes: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, performing thermal protection on the second-stage overheating phenomenon.
Wherein the thermal protection of the second stage overheating phenomenon is performed, including any one of the following second stage overheating protection situations:
first and second stage overheat protection scenarios: and controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle-high speed. And controlling the heat dissipation component to be adjusted to the set middle-high speed from the current rotating speed under the condition that the current rotating speed of the heat dissipation component is lower than the set middle-high speed. Specifically, the current rotational speed is maintained if the rotational speed of the heat radiating member is not lower than the medium-high speed, and the control unit adjusts the rotational speed of the heat radiating member to the medium-high speed operation if the rotational speed of the heat radiating member is lower than the medium-high speed.
Second stage overheat protection scenario: and under the refrigeration mode, if the current frequency of the compressor is not lower than the set medium-high frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is lower than the set medium-high frequency, controlling the compressor to be adjusted to the set medium-high frequency from the current frequency.
Third stage two overheat protection scenario: in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle-low speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is higher than the set middle-low speed, controlling the direct current fan component to be adjusted to the set middle-low speed from the current rotating speed.
Specifically, when the current air-conditioning operation mode is cooling (including a cooling mode, a dehumidification mode, cooling in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not lower than the medium-high frequency, and the control unit switches the compressor frequency to the medium-high frequency if the compressor frequency is lower than the medium-high frequency. And if the rotating speed of the direct current fan component is not higher than the medium-low speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the medium-low speed, switching the rotating speed of the direct current fan component to the medium-low speed by the control unit.
A fourth stage two overheat protection scenario: in the heating mode, if the current frequency of the compressor is not higher than a set middle-low frequency, controlling the compressor to maintain the current frequency; and if the current frequency of the compressor is higher than the set middle-low frequency, controlling the compressor to be adjusted to the set middle-low frequency from the current frequency to operate.
Fifth stage overheat protection scenario: and under the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed.
Specifically, if the current air-conditioning operation mode is heating (including a heating mode, heating in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not higher than the medium-low frequency, and the control unit switches the compressor frequency to the medium-low frequency if higher than the medium-low frequency. And if the rotating speed of the direct current fan component is not lower than the medium-high speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the medium-high speed, switching the rotating speed of the direct current fan component to the medium-high speed by the control unit.
Sixth stage second overheat protection scenario: and under the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed. Specifically, if the current air conditioner operation mode is the air supply mode, the current rotational speed is maintained if the rotational speed of the dc fan section is not lower than the medium-high speed, and the control unit switches the rotational speed of the dc fan section to the medium-high speed if the rotational speed of the dc fan section is lower than the medium-high speed.
In some embodiments, controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range includes: and under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to the third-stage overheating phenomenon, performing thermal protection on the third-stage overheating phenomenon.
Wherein, the thermal protection is carried out on the third-stage overheating phenomenon, and any one of the following third-stage overheating protection situations is included:
first third stage overheat protection scenario: and controlling the heat radiating component to maintain the current rotating speed under the condition that the current rotating speed of the heat radiating component is not lower than the set high speed. And controlling the heat dissipation component to be adjusted to the set high-speed operation from the current rotating speed when the current rotating speed of the heat dissipation component is lower than the set high speed. Specifically, the current rotational speed is maintained if the rotational speed of the heat radiating member is not lower than the high speed, and the control unit adjusts the rotational speed of the heat radiating member to a high-speed operation if the rotational speed of the heat radiating member is lower than the high speed.
Second third stage overheat protection scenario: and in the refrigeration mode, if the current frequency of the compressor is not lower than the set high frequency, controlling the compressor to maintain the current frequency. And if the current frequency of the compressor is lower than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation.
A third stage overheat protection scenario: in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set low speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is higher than the set low speed, controlling the direct current fan component to be adjusted to the set low speed from the current rotating speed.
Specifically, when the current air-conditioning operation mode is cooling (including a cooling mode, a dehumidification mode, cooling in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not lower than the high frequency, and the control unit switches the compressor frequency to the high frequency if the compressor frequency is lower than the high frequency. And if the rotating speed of the direct current fan component is not higher than the low speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is higher than the low speed, switching the rotating speed of the direct current fan component to the low speed by the control unit.
A fourth stage overheat protection scenario: in the heating mode, if the current frequency of the compressor is not higher than the set low frequency, controlling the compressor to maintain the current frequency; and if the current frequency of the compressor is higher than the set low frequency, controlling the compressor to be adjusted from the current frequency to the set low frequency for operation.
Fifth stage overheat protection scenario: and under the heating mode, if the current rotating speed of the direct current fan component is not lower than the set high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
Specifically, if the current air-conditioning operation mode is heating (including a heating mode, heating in an automatic mode, etc.), the current frequency is maintained if the compressor frequency is not higher than the low frequency, and the control unit switches the compressor frequency to the low frequency if higher than the low frequency. And if the rotating speed of the direct current fan component is not lower than the high speed, maintaining the current rotating speed, and if the rotating speed of the direct current fan component is lower than the high speed, switching the rotating speed of the direct current fan component to the high speed by the control unit.
A sixth, third stage overheat protection scenario: and under the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set high speed, controlling the direct current fan component to maintain the current rotating speed. And if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
Specifically, if the current air conditioner operation mode is the air supply mode, the current rotational speed is maintained if the dc fan part rotational speed is not lower than the high speed, and if lower than the high speed, the control unit switches the dc fan part rotational speed to the high speed.
In some embodiments, further comprising: and a process of performing cycle control on the thermal protection control of the air conditioner indoor unit.
After controlling the operation of the load of the air conditioner according to the temperature section to which the maximum temperature belongs in the preset temperature range, re-determining the maximum temperature (such as the maximum temperature T) of the n current temperatures corresponding to the n heat generating componentsMAX) And determining whether the air conditioner indoor unit has an overheating phenomenon according to the redetermined highest temperature, and controlling the operation of the load of the air conditioner according to the temperature range to which the redetermined highest temperature belongs in the preset temperature range under the condition that the air conditioner indoor unit has the overheating phenomenon.
Specifically, in the case that the overheating phenomenon occurring in the air conditioner internal unit belongs to the first-stage overheating phenomenon, after the control unit completes the first-stage protection mechanism operation, if the highest temperature T is reachedMAX< first temperature threshold T1Then the control unit returns to the original normal operation mode.
Under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to the second-stage overheating phenomenon, after the control unit finishes the second-stage protection mechanism operation, if the first temperature threshold T is higher than the first temperature threshold T1Maximum temperature of less than or equal toTMAX< second temperature threshold T2Then the control unit switches to the first stage protection mechanism to make corresponding adjustment. If the third temperature threshold T3Maximum temperature T is less than or equal toMAXThen the control unit goes to the third stage protection mechanism to make corresponding adjustment.
Under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to the third-stage overheating phenomenon, after the control unit finishes the third-stage protection mechanism operation, if the second temperature threshold T is2Maximum temperature T is less than or equal toMAX< third temperature threshold T3Then the control unit switches to the second stage protection mechanism to make corresponding adjustment.
And under the condition that the overheating phenomenon of the air conditioner internal unit belongs to a third stage overheating phenomenon, if the redetermined highest temperature is still greater than or equal to a third set temperature threshold value after the set time, cutting off the power supply of a direct current fan component, a display component, a multimedia component and a loudspeaker component of the air conditioner, and controlling a radiating component of the air conditioner to maintain the set high-speed operation.
Specifically, in the case where the overheating phenomenon occurring in the air conditioner internal unit belongs to the third stage overheating phenomenon, if a certain time t1(e.g., about 1 minute to 5 minutes, or longer, based on factory setting or user setting), the control unit determines the third temperature threshold T3Still less than or equal to the maximum temperature TMAXIn the meantime, the control unit cuts off the power supply to the dc fan part, the display part, the speaker part, the multimedia part, and the like to stop the operation of these loads, and the heat radiating part is still kept operating at a high speed. After that, if a certain time t passes2(e.g., about 1 minute to 5 minutes, or longer, based on factory setting or user setting), the control unit determines the third temperature threshold T3Still less than or equal to the maximum temperature TMAXWhen the air conditioner is used, the control unit cuts off the power supply of the heat dissipation part and the air conditioner part, so that the whole air conditioner is uncharged and can naturally dissipate heat.
Since the processing and functions implemented by the method of this embodiment substantially correspond to the embodiments, principles and examples of the air conditioner, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
Through a large number of tests, the technical scheme of the embodiment is adopted, the current temperature of the main heating part of the air conditioner indoor unit is monitored, whether the current temperature meets a plurality of preset threshold values is judged, and the protection mechanisms of accelerating heat dissipation, reducing heat accumulation, lightening load or closing load and the like are adopted, so that unsafe factors such as fire caused by overheating of the air conditioner indoor unit are further reduced, the comprehensiveness of a user on the heat protection mechanism is improved, the possibility of fire of the air conditioner is reduced, and the reliability of the operation of the whole air conditioner is improved.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (13)

1. A thermal protection device of an air conditioner indoor unit is characterized by comprising: a monitoring unit and a control unit; wherein the content of the first and second substances,
the monitoring unit is configured to monitor the current temperature of each of n heat-generating components of the indoor unit of the air conditioner, wherein n is a positive integer; n of said heat-generating components, comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component;
the control unit is configured to determine the highest temperature of n current temperatures corresponding to the n heat generating components, and determine whether the air conditioner indoor unit generates an overheating phenomenon according to the highest temperature;
if the air conditioner indoor unit is overheated, initiating a reminding message of the overheating phenomenon of the air conditioner indoor unit, and controlling the operation of the load of the air conditioner according to the temperature range to which the highest temperature belongs in the preset temperature range so as to realize the thermal protection control of the air conditioner indoor unit; the load of the air conditioner includes: at least one of a heat dissipation component, a compressor and a direct current fan component of the air conditioner;
the preset temperature range includes: a temperature range consisting of a first set temperature threshold, a second set temperature threshold, and a third set temperature threshold;
the control unit determines whether the air conditioner indoor unit generates an overheating phenomenon according to the highest temperature, and comprises the following steps:
if the maximum temperature is smaller than the first set temperature threshold, determining that the air conditioner internal unit does not overheat, controlling the air conditioner to continuously operate according to the current operation mode, and controlling a heat dissipation component of the air conditioner to operate at a set low speed;
if the maximum temperature is greater than or equal to the first set temperature threshold and less than the second set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a first-stage overheating phenomenon;
if the maximum temperature is greater than or equal to the second set temperature threshold and less than the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a second-stage overheating phenomenon;
and if the maximum temperature is greater than or equal to the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a third-stage overheating phenomenon.
2. The thermal protection device for an air conditioner indoor unit as claimed in claim 1, wherein the control unit initiates a message for reminding that the air conditioner indoor unit is overheated, and the message comprises:
under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, displaying a reminding message of the first-stage overheating phenomenon of the air conditioner indoor unit through a display component in a multimedia component of the air conditioner, and displaying a first set color on a frame of the display component in the multimedia component of the air conditioner for color warning;
under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the second-stage overheating phenomenon of the air conditioner indoor unit, a frame of the display part in the multimedia part of the air conditioner displays a second set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out through a horn part in the multimedia part at a first set volume and a first set speech speed;
under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the third-stage overheating phenomenon of the air conditioner indoor unit, a display area of the display part in the multimedia part of the air conditioner displays a third set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out by setting the volume and the speed of a voice through a horn part in the multimedia part with the second set volume and the second set speed of a voice.
3. The thermal protection device for an air conditioner indoor unit according to claim 1, wherein the control unit controls the operation of the load of the air conditioner according to a temperature zone to which the maximum temperature belongs in a preset temperature range, including: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, performing thermal protection on the first-stage overheating phenomenon;
wherein thermally protecting the first stage overheating event comprises:
controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle speed; under the condition that the current rotating speed of the heat radiating part is lower than a set medium speed, controlling the heat radiating part to operate from the current rotating speed to the set medium speed;
in a refrigeration mode, if the current frequency of the compressor is not lower than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation;
in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed;
in the heating mode, if the current frequency of the compressor is not higher than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation;
in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed;
in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
4. The thermal protection device for an air conditioner indoor unit according to claim 1, wherein the control unit controls operation of a load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, further comprising: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, performing thermal protection on the second-stage overheating phenomenon;
wherein thermally protecting the second stage overheating phenomenon comprises:
under the condition that the current rotating speed of the heat radiating part is not lower than a set middle-high speed, controlling the heat radiating part to maintain the current rotating speed; under the condition that the current rotating speed of the heat radiating part is lower than the set middle-high speed, controlling the heat radiating part to be adjusted to the set middle-high speed from the current rotating speed;
in a refrigeration mode, if the current frequency of the compressor is not lower than a set medium-high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set medium-high frequency, controlling the compressor to be adjusted to the set medium-high frequency from the current frequency;
in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle-low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set middle-low speed, controlling the direct current fan component to be adjusted to the set middle-low speed from the current rotating speed;
in the heating mode, if the current frequency of the compressor is not higher than a set middle-low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set middle-low frequency, controlling the compressor to be adjusted to the set middle-low frequency from the current frequency;
in the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed;
in the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed.
5. The thermal protection device for an air conditioner indoor unit according to claim 1, wherein the control unit controls the operation of the load of the air conditioner according to a temperature zone to which the maximum temperature belongs in a preset temperature range, including: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, performing thermal protection on the third-stage overheating phenomenon;
wherein thermally protecting the third stage overheating phenomenon comprises:
controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set high speed; under the condition that the current rotating speed of the heat radiating part is lower than the set high speed, controlling the heat radiating part to adjust the current rotating speed to the set high speed to run;
in a refrigeration mode, if the current frequency of the compressor is not lower than a set high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation;
in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set low speed, controlling the direct current fan component to be adjusted to the set low speed from the current rotating speed;
in the heating mode, if the current frequency of the compressor is not higher than the set low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set low frequency, controlling the compressor to be adjusted from the current frequency to the set low frequency for operation;
in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust from the current rotating speed to the set high speed to run;
in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
6. The thermal protection device for an air conditioner indoor unit according to any one of claims 1 to 5, characterized by further comprising:
the control unit is further configured to, after controlling the operation of the load of the air conditioner according to a temperature section to which the maximum temperature belongs in a preset temperature range, re-determine the maximum temperature among n current temperatures corresponding to n heat generating components to determine whether an overheating phenomenon occurs in the air conditioner according to the re-determined maximum temperature, and control the operation of the load of the air conditioner according to a temperature section to which the re-determined maximum temperature belongs in a preset temperature range in the case that an overheating phenomenon occurs in the air conditioner;
and under the condition that the overheating phenomenon of the air conditioner internal unit belongs to a third stage overheating phenomenon, if the redetermined highest temperature is still greater than or equal to a third set temperature threshold value after the set time, cutting off the power supply of a direct current fan component, a display component, a multimedia component and a loudspeaker component of the air conditioner, and controlling a radiating component of the air conditioner to maintain the set high-speed operation.
7. An air conditioner, comprising: the thermal protection device for an air conditioner indoor unit according to any one of claims 1 to 6.
8. A thermal protection method for an air conditioner indoor unit is characterized by comprising the following steps:
monitoring the current temperature of each of n heat generating components of the air conditioner indoor unit, wherein n is a positive integer; n of said heat-generating components, comprising: at least one of a multimedia component, a display component, an air conditioning component and a direct current fan component;
determining the highest temperature of n current temperatures corresponding to the n heating components, and determining whether the air conditioner internal unit has an overheating phenomenon according to the highest temperature;
if the air conditioner indoor unit is overheated, initiating a reminding message of the overheating phenomenon of the air conditioner indoor unit, and controlling the operation of the load of the air conditioner according to the temperature range to which the highest temperature belongs in the preset temperature range so as to realize the thermal protection control of the air conditioner indoor unit; the load of the air conditioner includes: at least one of a heat dissipation component, a compressor and a direct current fan component of the air conditioner;
the preset temperature range includes: a temperature range consisting of a first set temperature threshold, a second set temperature threshold, and a third set temperature threshold;
determining whether the overheating phenomenon occurs in the air conditioner indoor unit according to the highest temperature, wherein the determining step comprises the following steps:
if the maximum temperature is smaller than the first set temperature threshold, determining that the air conditioner internal unit does not overheat, controlling the air conditioner to continuously operate according to the current operation mode, and controlling a heat dissipation component of the air conditioner to operate at a set low speed;
if the maximum temperature is greater than or equal to the first set temperature threshold and less than the second set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a first-stage overheating phenomenon;
if the maximum temperature is greater than or equal to the second set temperature threshold and less than the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a second-stage overheating phenomenon;
and if the maximum temperature is greater than or equal to the third set temperature threshold, determining that the air conditioner indoor unit has an overheating phenomenon and belongs to a third-stage overheating phenomenon.
9. The thermal protection method for the air conditioner indoor unit according to claim 8, wherein the initiating of the reminding message of the overheating phenomenon of the air conditioner indoor unit comprises:
under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, displaying a reminding message of the first-stage overheating phenomenon of the air conditioner indoor unit through a display component in a multimedia component of the air conditioner, and displaying a first set color on a frame of the display component in the multimedia component of the air conditioner for color warning;
under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the second-stage overheating phenomenon of the air conditioner indoor unit, a frame of the display part in the multimedia part of the air conditioner displays a second set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out through a horn part in the multimedia part at a first set volume and a first set speech speed;
under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, a display part in a multimedia part of the air conditioner displays a reminding message of the third-stage overheating phenomenon of the air conditioner indoor unit, a display area of the display part in the multimedia part of the air conditioner displays a third set color for color warning, the playing volume and the display brightness of the multimedia part are reduced, and sound warning is carried out by setting the volume and the speed of a voice through a horn part in the multimedia part with the second set volume and the second set speed of a voice.
10. The thermal protection method for an air conditioner indoor unit according to claim 8, wherein controlling the operation of the load of the air conditioner according to the temperature zone to which the maximum temperature belongs in the preset temperature range comprises: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a first-stage overheating phenomenon, performing thermal protection on the first-stage overheating phenomenon;
wherein thermally protecting the first stage overheating event comprises:
controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set middle speed; under the condition that the current rotating speed of the heat radiating part is lower than a set medium speed, controlling the heat radiating part to operate from the current rotating speed to the set medium speed;
in a refrigeration mode, if the current frequency of the compressor is not lower than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation;
in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed;
in the heating mode, if the current frequency of the compressor is not higher than a set intermediate frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set intermediate frequency, controlling the compressor to be adjusted from the current frequency to the set intermediate frequency for operation;
in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed;
in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set middle speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set medium speed, controlling the direct current fan component to be adjusted to the set medium speed from the current rotating speed.
11. The thermal protection method for an air conditioner indoor unit according to claim 8, wherein the operation of the load of the air conditioner is controlled according to a temperature section to which the maximum temperature belongs in a preset temperature range, further comprising: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a second-stage overheating phenomenon, performing thermal protection on the second-stage overheating phenomenon;
wherein thermally protecting the second stage overheating phenomenon comprises:
under the condition that the current rotating speed of the heat radiating part is not lower than a set middle-high speed, controlling the heat radiating part to maintain the current rotating speed; under the condition that the current rotating speed of the heat radiating part is lower than the set middle-high speed, controlling the heat radiating part to be adjusted to the set middle-high speed from the current rotating speed;
in a refrigeration mode, if the current frequency of the compressor is not lower than a set medium-high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set medium-high frequency, controlling the compressor to be adjusted to the set medium-high frequency from the current frequency;
in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set middle-low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set middle-low speed, controlling the direct current fan component to be adjusted to the set middle-low speed from the current rotating speed;
in the heating mode, if the current frequency of the compressor is not higher than a set middle-low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set middle-low frequency, controlling the compressor to be adjusted to the set middle-low frequency from the current frequency;
in the heating mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed;
in the air supply mode, if the current rotating speed of the direct current fan component is not lower than the set middle-high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set middle-high speed, controlling the direct current fan component to be adjusted to the set middle-high speed from the current rotating speed.
12. The thermal protection method for an air conditioner indoor unit according to claim 8, wherein controlling the operation of the load of the air conditioner according to the temperature zone to which the maximum temperature belongs in the preset temperature range comprises: under the condition that the overheating phenomenon of the air conditioner indoor unit belongs to a third-stage overheating phenomenon, performing thermal protection on the third-stage overheating phenomenon;
wherein thermally protecting the third stage overheating phenomenon comprises:
controlling the heat dissipation component to maintain the current rotating speed under the condition that the current rotating speed of the heat dissipation component is not lower than the set high speed; under the condition that the current rotating speed of the heat radiating part is lower than the set high speed, controlling the heat radiating part to adjust the current rotating speed to the set high speed to run;
in a refrigeration mode, if the current frequency of the compressor is not lower than a set high frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is lower than the set high frequency, controlling the compressor to be adjusted from the current frequency to the set high frequency for operation;
in a refrigeration mode, if the current rotating speed of the direct current fan component is not higher than the set low speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is higher than the set low speed, controlling the direct current fan component to be adjusted to the set low speed from the current rotating speed;
in the heating mode, if the current frequency of the compressor is not higher than the set low frequency, controlling the compressor to maintain the current frequency; if the current frequency of the compressor is higher than the set low frequency, controlling the compressor to be adjusted from the current frequency to the set low frequency for operation;
in the heating mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust from the current rotating speed to the set high speed to run;
in the air supply mode, if the current rotating speed of the direct current fan component is not lower than a set high speed, controlling the direct current fan component to maintain the current rotating speed; and if the current rotating speed of the direct current fan component is lower than the set high speed, controlling the direct current fan component to adjust to the set high speed from the current rotating speed.
13. The thermal protection method for an air conditioner indoor unit according to any one of claims 8 to 12, characterized by further comprising:
after controlling the operation of the load of the air conditioner according to the temperature interval to which the maximum temperature belongs in the preset temperature range, re-determining the maximum temperature of n current temperatures corresponding to n heat generating components, so as to determine whether the air conditioner indoor unit generates an overheating phenomenon according to the re-determined maximum temperature, and controlling the operation of the load of the air conditioner according to the temperature interval to which the re-determined maximum temperature belongs in the preset temperature range under the condition that the air conditioner indoor unit generates the overheating phenomenon;
and under the condition that the overheating phenomenon of the air conditioner internal unit belongs to a third stage overheating phenomenon, if the redetermined highest temperature is still greater than or equal to a third set temperature threshold value after the set time, cutting off the power supply of a direct current fan component, a display component, a multimedia component and a loudspeaker component of the air conditioner, and controlling a radiating component of the air conditioner to maintain the set high-speed operation.
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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01174842A (en) * 1987-12-26 1989-07-11 Mitsubishi Electric Corp Safety device for prevention of overheating of heater in air conditioner
JP2001248884A (en) * 2000-03-03 2001-09-14 Corona Corp Controller for air conditioner
KR20030069456A (en) * 2002-02-20 2003-08-27 주식회사 엘지이아이 Overheat preventing apparatus of power parts for air conditioner
JP2007155264A (en) * 2005-12-07 2007-06-21 Sharp Corp Air conditioner
JP2010121812A (en) * 2008-11-18 2010-06-03 Panasonic Corp Remote control system of air conditioner
CN103292415A (en) * 2012-03-01 2013-09-11 珠海格力电器股份有限公司 Method and device for temperature detecting as well as method and system for conditioner control
CN206389679U (en) * 2017-01-18 2017-08-08 佛山市力锝光电有限公司 A kind of LED display double temperature control system
CN107355914A (en) * 2017-06-15 2017-11-17 青岛海尔空调电子有限公司 A kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure
CN109373540A (en) * 2018-11-19 2019-02-22 奥克斯空调股份有限公司 A kind of air conditioning control method, system and air conditioner
CN109506345A (en) * 2018-10-17 2019-03-22 珠海格力电器股份有限公司 Blower control method and device
CN110715414A (en) * 2019-10-16 2020-01-21 广东美的制冷设备有限公司 Air conditioner and control method and control system thereof
CN110887178A (en) * 2019-10-17 2020-03-17 珠海格力电器股份有限公司 Control method for heating shutdown of multi-split air conditioner, computer readable storage medium and air conditioner
CN111964208A (en) * 2020-07-14 2020-11-20 宁波奥克斯电气股份有限公司 Heating indoor unit high-temperature-resistant control method and device, air conditioner and storage medium

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5780280B2 (en) * 2013-09-30 2015-09-16 ダイキン工業株式会社 Air conditioning system and control method thereof
KR102140069B1 (en) * 2013-11-07 2020-07-31 엘지전자 주식회사 Air-conditioner and method
JP6044527B2 (en) * 2013-11-29 2016-12-14 ダイキン工業株式会社 Air conditioning system
CN103954022A (en) * 2014-04-09 2014-07-30 美的集团股份有限公司 Temperature-detection protective device and air conditioner
KR102531643B1 (en) * 2016-01-15 2023-05-11 삼성전자주식회사 Air conditioner
US10941951B2 (en) * 2016-07-27 2021-03-09 Johnson Controls Technology Company Systems and methods for temperature and humidity control
CN110749039B (en) * 2019-10-17 2021-02-09 珠海格力电器股份有限公司 Control method and device of multi-split system, storage medium and multi-split system

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01174842A (en) * 1987-12-26 1989-07-11 Mitsubishi Electric Corp Safety device for prevention of overheating of heater in air conditioner
JP2001248884A (en) * 2000-03-03 2001-09-14 Corona Corp Controller for air conditioner
KR20030069456A (en) * 2002-02-20 2003-08-27 주식회사 엘지이아이 Overheat preventing apparatus of power parts for air conditioner
JP2007155264A (en) * 2005-12-07 2007-06-21 Sharp Corp Air conditioner
JP2010121812A (en) * 2008-11-18 2010-06-03 Panasonic Corp Remote control system of air conditioner
CN103292415A (en) * 2012-03-01 2013-09-11 珠海格力电器股份有限公司 Method and device for temperature detecting as well as method and system for conditioner control
CN206389679U (en) * 2017-01-18 2017-08-08 佛山市力锝光电有限公司 A kind of LED display double temperature control system
CN107355914A (en) * 2017-06-15 2017-11-17 青岛海尔空调电子有限公司 A kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure
CN109506345A (en) * 2018-10-17 2019-03-22 珠海格力电器股份有限公司 Blower control method and device
CN109373540A (en) * 2018-11-19 2019-02-22 奥克斯空调股份有限公司 A kind of air conditioning control method, system and air conditioner
CN110715414A (en) * 2019-10-16 2020-01-21 广东美的制冷设备有限公司 Air conditioner and control method and control system thereof
CN110887178A (en) * 2019-10-17 2020-03-17 珠海格力电器股份有限公司 Control method for heating shutdown of multi-split air conditioner, computer readable storage medium and air conditioner
CN111964208A (en) * 2020-07-14 2020-11-20 宁波奥克斯电气股份有限公司 Heating indoor unit high-temperature-resistant control method and device, air conditioner and storage medium

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