CN109237717B - Air conditioner electric heating thermal protection method and device and air conditioner - Google Patents
Air conditioner electric heating thermal protection method and device and air conditioner Download PDFInfo
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- CN109237717B CN109237717B CN201811427753.5A CN201811427753A CN109237717B CN 109237717 B CN109237717 B CN 109237717B CN 201811427753 A CN201811427753 A CN 201811427753A CN 109237717 B CN109237717 B CN 109237717B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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- 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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- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner electric heating heat protection method and device and an air conditioner. The air conditioner electric heating thermal protection method comprises the steps of obtaining the electric heating temperature of an air conditioner at preset time intervals; confirming the working state of the air conditioner in the electric heating mode according to the electric heating temperature of the air conditioner; according to the working state that the electric heating of air conditioner is located, adjust the operating mode of air conditioner, through the operating temperature of real-time detection electric heating, according to the real-time temperature adjustment air conditioner's of electric heating operating state, when electric heating temperature rose, adjustment wind speed size and air output improved thermal cycle efficiency, reduced electric heating temperature, made the temperature of electric heating be in the safety range, ensured that the electric heating does not appear unrecoverable protection, prolonged the life of air conditioner effectively, eliminated the potential safety hazard simultaneously.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner electric heating heat protection method and device and an air conditioner.
Background
With the continuous progress of economy, the application of the air conditioner is more and more extensive, and the air conditioner can bring comfortable experience to users by adjusting the indoor environment temperature, so that the air conditioner becomes one of the most common household appliances.
At present, heat pump air conditioners all contain auxiliary electric heating, and in the heating process in winter, auxiliary air conditioners are used for heating, so that the heating capacity is improved. Electric heating, as the name implies, directly circular telegram produces the heat, and the fan is bloied in the rethread, blows out the heat that produces, makes the electric heating heat balanced. However, the electric heating is a heating device, the temperature can reach more than 100 ℃, and when the electric heating is operated at high temperature for a long time, the electric heating has the hidden danger of fire, so that the air conditioner is damaged if the electric heating is light, and the fire is caused if the electric heating is heavy, thereby causing casualties. At present, the mode of a thermal fuse is mostly adopted for the electric heating high-temperature protection, namely, after the temperature is too high, a fuse is fused, and the electric heating is forced to be powered off. The process is irreversible, and if the process is electrically heated and fused, the heating capacity of an air conditioner is lost to a certain extent, so that the comfort level of a user is reduced.
Disclosure of Invention
In view of the above, the present invention is directed to a method and a device for protecting an air conditioner from heat generated by electric heating, and an air conditioner.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in a first aspect, the present invention provides an air conditioner electrical heating thermal protection method, including:
acquiring the electric heating temperature Tem of the air conditioner at preset time intervals;
confirming the working state of the air conditioner in the electric heating mode according to the electric heating temperature Tem of the air conditioner;
and adjusting the working mode of the air conditioner according to the working state of the electric heating of the air conditioner.
Further, the step of confirming the working state of the air conditioner according to the electric heating temperature Tem of the air conditioner comprises:
when the electric heating temperature Tem of the air conditioner<T2When the air conditioner is in the first working state, the electric heating of the air conditioner is confirmed;
when the electric heating temperature Tem of the air conditioner is more than or equal to T2And lasts for a first preset duration M1When the air conditioner is in the second working state, the electric heating of the air conditioner is confirmed;
when the electric heating temperature Tem of the air conditioner is more than or equal to T4And lasts for a second preset time length M2When the air conditioner is in the third working state, T4＞T2；
When the electric heating temperature Tem of the air conditioner is more than or equal to T6And lasts for a third preset time length M3When the air conditioner is in the second working state, the air conditioner is confirmed to be in the first working state, wherein T6＞T4。
Further, the adjusting the operating mode of the air conditioner according to the operating state of the electric heating of the air conditioner specifically includes:
when the air conditioner is in a first working state by electric heating, an inner fan and an air guide door of the air conditioner operate according to a user set mode;
when the air conditioner is in a second working state by electric heating, controlling the inner fan to operate according to a first air speed, and adjusting the air guide door to operate to a maximum air outlet angle;
when the air conditioner is in a third working state by electric heating, controlling the inner fan to operate according to a second air speed, and adjusting the air guide door to keep the maximum air outlet angle;
and when the air conditioner is in a fourth working state by electric heating, stopping the electric heating operation of the air conditioner, controlling the inner fan to operate according to the highest wind speed, and adjusting the air guide door to keep the maximum wind outlet angle.
Further, the step of adjusting the operation mode of the air conditioner according to the operation state of the electric heating of the air conditioner further includes:
when the electric heating of the air conditioner is in a second working state, if the electric heating temperature Tem of the air conditioner is higher than the first working state<T1And lasts for a fourth preset time length M4When the air conditioner is started, the air conditioner is confirmed to enter a first working state to operate, wherein T1<T2；
When the electric heating of the air conditioner is in a third working state, if the electric heating temperature Tem of the air conditioner is higher than the first working state<T3And lasts for a fifth preset time period M5When the air conditioner is started, the air conditioner is confirmed to enter a second working state to operate, wherein T3<T4；
When the electric heating of the air conditioner is in a fourth working state, if the electric heating temperature Tem of the air conditioner is higher than the first working state<T5And last for a sixth preset duration M6When the air conditioner is in the second working state, the air conditioner is confirmed to be electrically heated to exit the second working state, wherein T5<T6。
Further, the step of confirming that the air conditioner electrically heats and exits the fourth operating state comprises:
if said T is5＞T4When the air conditioner is electrically heated and exits from the fourth working state, the air conditioner enters a third working state to operate;
if said T is5<T3When the air conditioner is electrically heated and exits from the fourth working state, the air conditioner enters a second working state to operate;
if said T is5<T2And when the air conditioner is electrically heated and exits the fourth working state, the air conditioner enters the first working state to operate.
Further, when the user controls the air conditioner to be turned offIf the electric heating temperature Tem of the air conditioner is detected to be more than or equal to T7And controlling the inner fan to maintain the current wind speed to operate, and adjusting the air guide door to keep the maximum air outlet angle until the electric heating temperature Tem of the air conditioner<T8Stopping the operation of the inner fan, closing the air guide door, wherein T8≤T7。
Further, the method further comprises: when the air conditioner is in a fourth working state and the duration time is longer than a seventh preset time M7And controlling the inner fan to operate according to the highest wind speed, adjusting the air guide door to keep the maximum air outlet angle, and controlling the air conditioner to report errors.
Further, the first wind speed is less than a second wind speed, which is less than a highest wind speed.
In a second aspect, the present invention provides an air conditioner electrical heating thermal protection device, comprising:
the temperature acquisition unit is used for acquiring the electric heating temperature Tem of the air conditioner at preset time intervals;
the state determining unit is used for determining the working state of the electric heating of the air conditioner according to the electric heating temperature Tem of the air conditioner;
and the work adjusting unit is used for adjusting the working mode of the air conditioner according to the working state of the electric heating of the air conditioner.
In a third aspect, the present invention also provides an air conditioner, comprising:
a memory, a controller; and an air-conditioning electrical heating thermal protection device, the air-conditioning electrical heating thermal protection device being mounted to the memory and including one or more software function modules executed by the controller, the air-conditioning electrical heating thermal protection device comprising:
the temperature acquisition unit is used for acquiring the electric heating temperature Tem of the air conditioner at preset time intervals;
the state determining unit is used for determining the working state of the electric heating of the air conditioner according to the electric heating temperature Tem of the air conditioner;
and the work adjusting unit is used for adjusting the working mode of the air conditioner according to the working state of the electric heating of the air conditioner.
Compared with the prior art, the air conditioner electric heating heat protection method, the air conditioner electric heating heat protection device and the air conditioner have the following advantages:
according to the air conditioner electric heating thermal protection method, the device and the air conditioner, the working temperature of electric heating is detected in real time, the working state of the air conditioner is adjusted according to the real-time temperature of the electric heating, and when the electric heating temperature rises, the air speed and the air output are adjusted, so that the thermal circulation efficiency is improved, the electric heating temperature is reduced, the electric heating temperature is in a safety range, the electric heating is protected from being unrecoverable, and the service life of the air conditioner is effectively prolonged.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart of an air conditioner electric heating thermal protection method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a sub-step of step S20 of an air conditioner electric heating thermal protection method according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a sub-step of step S30 of an air conditioner electric heating thermal protection method according to an embodiment of the present invention;
fig. 5 shows a schematic diagram of an air conditioner electric heating thermal protection device according to an embodiment of the invention.
Icon: 1-an air conditioner; 2-a controller; 3-a memory; 4-a temperature detection module; 5-an inner fan; 6-air guide door; 7-air conditioner electric heating heat protection device; 8-a temperature acquisition unit; 9-a state determination unit; 10-a working adjustment unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
First embodiment
The embodiment of the invention provides an air conditioner 1, which is used for adjusting indoor temperature, ensuring that a user has comfortable use experience at any time, avoiding overhigh electric heating temperature and eliminating potential safety hazards. Fig. 1 is a functional block diagram of an air conditioner 1 according to an embodiment of the present invention. The air conditioner 1 includes: the air conditioner comprises a memory 3, a controller 2, a temperature detection module 4, an inner fan 5, an air guide door 6 and an air conditioner electric heating thermal protection device 7. The controller 2 is electrically connected with the memory 3, the temperature detection module 4, the inner fan 5 and the air guide door 6. The air conditioner electric heating thermal protection device 7 comprises at least one of a software or firmware (firmware) type memory 3.
The memory 3 may be configured to store software programs and units, such as program instructions/units corresponding to the air conditioner electrical heating thermal protection device 7 and the method in the embodiment of the present invention, and the controller 2 executes various functional applications and data processing by running the software programs and units of the air conditioner electrical heating thermal protection device 7 and the method stored in the memory 3, such as the air conditioner electrical heating thermal protection method provided in the embodiment of the present invention. The Memory 3 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM) 3, a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The controller 2 may be an integrated circuit chip having signal processing capabilities. The controller 2 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor. The controller 2 may also be any conventional processor or the like.
The temperature detection module 4 is used for detecting the temperature of the electric heating and transmitting the temperature of the electric heating to the controller 2. In a preferred embodiment, the temperature detection module 4 comprises at least one temperature sensor, which can be used to detect the temperature of the surface electrically heated by the air conditioner 1.
The inner fan 5 is used for adjusting the air speed under the control of the controller 2, in the embodiment, the air blown by the inner fan 5 can accelerate the heat generated by electric heating to be dissipated, the temperature of the electric heating surface is reduced, and the larger the air speed is, the faster the heat generated by the electric heating is dissipated.
The damper door 6 is used to adjust the angle of the damper door 6 under the control of the controller 2. Specifically, the angle of the air guide door 6 includes an inner angle of the air guide door 6 and an outer angle of the air guide door 6. Understandably, the air outlet angle and the air speed of the air conditioner 1 can be adjusted by comprehensively adjusting the angle of the air guide door 6, so that the heat dissipation of electric heating is adjusted.
It will be appreciated that the configuration shown in fig. 1 is merely illustrative and that the air conditioner 1 may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
Second embodiment
Referring to fig. 2, fig. 2 is a schematic diagram illustrating an electrical heating protection method for an air conditioner according to this embodiment. The method includes steps S10-S30.
Step S10: the electric heating temperature Tem of the air conditioner 1 is acquired at every preset time interval.
When the air conditioner 1 starts the heating mode, the electric heating starts to operate. After the electric heating is started to operate, the electric heating temperature Tem of the air conditioner 1 is detected and obtained at preset time intervals. The surface of the electric heating is provided with a temperature sensor, and the temperature Tem of the electric heating is detected and obtained by the sensor at preset time intervals. The time interval may be 5 seconds, 10 seconds, etc., and this embodiment is not limited thereto.
After the air conditioner 1 starts the heating mode, the electric heating temperature Tem of the air conditioner 1 is continuously obtained, so that the operating state of the air conditioner 1 is adjusted according to the electric heating temperature Tem.
Step S20: and confirming the working state of the air conditioner 1 in the electric heating mode according to the electric heating temperature Tem of the air conditioner 1.
The operating state of the air conditioner 1 operating in the heating mode is divided according to the temperature of the electric heating. Specifically, the operating state of the air conditioner 1 is confirmed based on the electric heating temperature Tem obtained by the continuous detection. In the present embodiment, referring to fig. 3, step S20 includes substeps S201-step S2051.
Step S201: it is confirmed whether the electric heating temperature Tem of the air conditioner 1 is lower than the second preset temperature T2。
Generally, the second preset temperature T2Can be set according to the current season of the normal room temperature, and the second preset temperature T2Can be higher than room temperature, and when the electric heating temperature Tem of the air conditioner 1 is lower than the second preset temperature T2Meanwhile, the electric heating is in a preliminary heating state, i.e., a first operating state, and the process proceeds to step S2011. When the temperature Tem of the electric heating is higher than the second preset temperature T2Then, step S202 is executed.
Step S2011: when the electric heating temperature Tem of the air conditioner 1<T2And then, the air conditioner 1 is confirmed to be in the first working state by electric heating.
When the electric heating temperature Tem of the air conditioner 1 is higher<T2At this time, the temperature of the electric heating of the air conditioner 1 is at a low position, and it is confirmed that the electric heating of the air conditioner 1 is in the first operating state.
In the process of continuously increasing the temperature of the electric heating in the first operating state, the air conditioner 1 continuously detects and acquires the temperature of the electric heating, and determines the temperature of the electric heating, that is, repeatedly executes step S201.
Step S202: it is confirmed whether the electric heating temperature of the air conditioner 1 is higher than the second preset temperature T2And lasts for a first preset time length M1。
When the electric heating of the air conditioner 1 is in the first working state, the electric heating is continuously heated, the fan 5 in the air conditioner 1 runs according to the wind speed set by the user, and the air guide door 6 of the air conditioner 1 guides the wind according to the angle set by the user, so that the temperature of the electric heating is diffused, and the indoor temperature is increased. If the electric heating temperature of the air conditioner 1 lasts for a first preset time period M1Higher than a second predetermined temperature T2Then, the electric heating of the air conditioner 1 enters the second operation state, and step S2021 is performed. If the temperature of the electric heating surface is reduced, the electric heating temperature cannot last for the first preset time M1Higher than a second predetermined temperature T2If the electric heating is still in the first working state, the electric heating deviceStep S2011 is performed. In the present embodiment, the first preset time period is set according to the heating performance of the electric heating, and may be, for example, 3 seconds, 5 seconds, and the like, but is not limited thereto.
Step S2021: when the electric heating temperature Tim of the air conditioner 1 is more than or equal to T2And lasts for a first preset duration M1And then, the electric heating of the air conditioner 1 is confirmed to be in the second working state.
When the electric heating of the air conditioner 1 is in the first working state, the electric heating temperature is continuously increased, and if the electric heating temperature is continuously increased for a first preset time period M1Detects that the electric heating temperature Tim of the air conditioner 1 is more than or equal to T2Then, it is determined that the electric heating temperature of the air conditioner 1 is in the second operation state. The electrical heating temperature in the second operating state is higher than that in the first operating state, but a safer temperature level is still maintained. When the electric heating is in the second working state, the air conditioner 1 properly adjusts the air speed, so that the fan 5 in the air conditioner 1 runs according to the first air speed, and the air guide door 6 is adjusted to run to the maximum air outlet angle, so that the heat generated by the electric heating is radiated in an accelerated manner.
Step S203: confirming whether the temperature of the electric heating of the air conditioner 1 lasts for a second preset time period M2Higher than a fourth preset temperature T4。
The air conditioner 1 is heated continuously by electric heating, and meanwhile, the heat dissipation is accelerated by the inner fan 5 and the air guide door 6. If the heat dissipation efficiency of the air conditioner 1 is insufficient, the temperature of the electric heating is continuously increased, and if the temperature of the electric heating is continuously kept for a second preset time M2Higher than a fourth preset temperature T4Then, it is determined that the electric heating enters the third operating state, and step S2031 is performed. In this embodiment, the fourth predetermined temperature T4For electrically heating the air conditioner 1, when the electrically heating temperature reaches a fourth preset temperature T4In time, the temperature of the electric heating is higher, the dissipation of the surface heat of the electric heating needs to be accelerated, the temperature of the electric heating is reduced, and the potential safety hazard is eliminated. In this embodiment, the fourth predetermined temperature T4Can be set according to the heating performance of the electric heating, and the second preset time length M2Also set according to the heating performance of the electric heating, e.g. a second preset time period M2May be 3 seconds, 5 seconds, etc., but is not limited thereto.
If the temperature of the electric heating is reduced, the second preset time period M is not continued2Higher than a fourth preset temperature T4Then step S2032 is performed.
Step S2031: when the electric heating temperature Tim of the air conditioner 1 is more than or equal to T4And lasts for a second preset time length M2And then, confirming that the air conditioner 1 is in a third working state by electric heating.
Step S2032: judging whether the electric heating temperature Tem of the air conditioner 1 is lower than a first preset temperature T1And lasts for a fourth preset time length M4。
When the air conditioner 1 in the second working state adjusts the air speed, the inner fan 5 of the air conditioner 1 operates according to the first air speed, the air guide door 6 is adjusted to operate to the maximum air outlet angle, the heat generated by electric heating is emitted in an accelerated manner, the temperature of the electric heating is reduced, and if the temperature of the electric heating lasts for a fourth preset time M4Lower than a first predetermined temperature T1In the present embodiment, T1<T2If yes, it is determined that the air conditioner 1 is in the first operating state by the electric heating, and step S2011 is executed. If the electrically heated temperature does not last for the fourth preset time period M4Lower than a first predetermined temperature T1Then, it is determined that the air conditioner 1 is still in the second operation state, and step S2021 is executed. The fourth preset time length M4Setting according to the heat dissipation performance of electric heating, for example, the fourth preset time period M4And may be 6 seconds, 8 seconds, etc.
When the air conditioner 1 is in the third operating state, the temperature of the air conditioner 1 is continuously detected by the electric heating to determine the operating state of the electric heating, and step S204 is executed.
Step S204: judging whether the electric heating temperature of the air conditioner 1 lasts for a third preset time length M3Higher than a sixth preset temperature T6。
If the electric heating temperature of the air conditioner 1 is increased, the heating lasts for a third preset time period M3Higher than a sixth preset temperature T6If yes, the air conditioner 1 is determined to be in the fourth operating state, and step S2041 is executed. If the electric heating temperature of the air conditioner 1 does not last for the third preset time period M3Higher than a sixth preset temperature T6Then, step S2042 is executed.
Step S2042: judging whether the electric heating temperature of the air conditioner 1 lasts for a fifth preset time length M5Below a third preset temperature T3。
When the air conditioner 1 is in the third working state, if the electric heating temperature of the air conditioner 1 is not continuously increased, detecting and judging whether the electric heating temperature of the air conditioner 1 is reduced to a third preset temperature T3And lasts for a fifth preset time length M5The above. If the electric heating temperature of the air conditioner 1 lasts for a fifth preset time period M5Below a third preset temperature T3In the present embodiment, T3<T4If yes, judging that the electric heating temperature of the air conditioner 1 is reduced, entering a second working state, and executing step S2021; if the temperature of the air conditioner 1 is not maintained for the fifth preset time period M5Below a third preset temperature T3Judging that the air conditioner 1 still works in the third working state by the electric heating, wherein the fifth preset time length M5Setting according to the heat radiation performance of electric heating, for example, the fifth preset time length M5And may be 4 seconds, 5 seconds, etc.
Step S2041: when the electric heating temperature of the air conditioner 1 lasts for a third preset time period M3Higher than a sixth preset temperature T6And it is confirmed that the air conditioner 1 is in the fourth operation state.
Sixth preset temperature T6An alarm temperature for electrically heating the air conditioner 1, a sixth preset temperature T6May be set according to the upper temperature limit that the electric heating can withstand, for example, the sixth preset temperature T6May be set to be 5 deg.c lower than the upper limit temperature of the electric heating. When the electric heating temperature of the air conditioner 1 lasts for a third preset time period M3Higher than a sixth preset temperature T6The air conditioner 1 is in a fourth working state by electric heating, the fourth working state is a dangerous state, and if the electric heating is continued to heat up, potential safety hazards are caused. In this embodiment, the third preset duration M3Set according to the heat-bearing performance of the electric heating, e.g. the third preset time period M3And may be 2 seconds, 3 seconds, etc. When the air conditioner 1 is in the fourth working state, the electric heating is detected in real timeStep S205 is performed.
Step 205: judging whether the electric heating temperature of the air conditioner 1 lasts for a sixth preset time length M6Below a fifth preset temperature T5。
The fifth preset temperature T5For the preset threshold value for checking the electric heating and cooling of the air conditioner 1, when the air conditioner 1 is in the fourth working state, the working mode is adjusted, and if the electric heating temperature of the air conditioner 1 is not reduced, the electric heating temperature is not lower than the fifth preset temperature T5If the temperature of the electric heating of the air conditioner 1 is too high, which may cause a safety accident, step S2051 is executed to disconnect the electric heating power supply of the air conditioner 1 and keep the wind speed of the inner fan 5 and the angle of the air guide door 6 running. If the electric heating temperature of the air conditioner 1 is reduced and lasts for a sixth preset time length M6Below a fifth preset temperature T5When, the sixth preset duration M6Set according to the heat-bearing performance of the electric heating, e.g. the sixth preset time period M6And may be 2 seconds, 3 seconds, etc. In this embodiment, T5<T6Then, the working state of the air conditioner 1 is determined again according to the temperature of the electric heating of the air conditioner, specifically, according to the fifth preset temperature T5Is determined, for example,
if said T is4<T5<T6When the air conditioner 1 is electrically heated and exits the fourth operating state, the air conditioner enters the third operating state to operate, and step S2031 is executed.
If said T is2<T5<T4When the air conditioner 1 is electrically heated and exits the fourth operating state, the air conditioner enters the second operating state to operate, and step S2021 is executed.
If said T is5<T2When the air conditioner 1 is electrically heated and exits the fourth operating state, the air conditioner enters the first operating state to operate, and step S2011 is executed.
It should be noted that, in this embodiment, the first preset time duration M1A second preset time length M2A third preset time length M3A fourth preset time length M4A fifth preset time length M5And a sixth preset time length M6And are not related to each other,they may be of the same length of time, e.g., 2 seconds, 3 seconds, 5 seconds, etc. The time length can also be reduced in turn, for example, the first preset time length M 110 seconds, a second preset time length M2Is 8 seconds and has a third preset time length M 36 seconds, etc., and the present embodiment is not limited thereto, and may be specifically set according to the thermal performance of the electric heating of the air conditioner 1.
When the operation state of the electric heating of the air conditioner 1 is confirmed, step S30 is performed.
Step S30: and adjusting the working mode of the air conditioner 1 according to the working state of the electric heating of the air conditioner 1.
When the electrical heating of air conditioner 1 is in different operating condition, carry out different adjustments to the mode of operation of air conditioner 1, avoid the temperature of electrical heating to surpass the safe threshold value, cause the potential safety hazard, harm user's personal and property safety.
In the present embodiment, referring to fig. 4, step S30 includes the following sub-steps, step S301 to step S304.
Step S301: when the air conditioner 1 is in the first working state, the air conditioner 1 operates according to a conventional heating mode without adjustment, and the inner fan 5 and the air guide door 6 operate according to a user set mode.
When the air conditioner 1 is in the first working state by electric heating, the temperature of the air conditioner 1 by electric heating is lower, the working state of the air conditioner 1 by electric heating is kept, and simultaneously the wind speed of the inner fan 5 of the air conditioner 1 and the wind guide door 6 of the air conditioner 1 are adjusted to operate according to a mode set by a user.
Step S302: when the air conditioner 1 is in the second working state through electric heating, the inner fan 5 is controlled to operate according to the first air speed, and the air guide door 6 is adjusted to operate to the maximum air outlet angle.
When the air conditioner 1 is in the second working state by electrical heating, the temperature of the electrical heating of the air conditioner 1 is already obviously higher than the room temperature, the air blower 5 in the air conditioner 1 is adjusted to run according to the first wind speed at the moment, and meanwhile, the maximum wind outlet angle of the angle value of the wind guide door 6 of the air conditioner 1 is adjusted, so that the heat generated by the electrical heating of the air conditioner 1 is accelerated to be dissipated, and the electrical heating temperature of the air conditioner 1 is prevented from being increased too fast.
Step S303: when the air conditioner 1 is in a third working state through electric heating, the inner fan 5 is controlled to operate according to a second air speed, and the air guide door 6 is adjusted to keep the maximum air outlet angle.
The third operating condition is the early warning state, and the temperature of air conditioner 1 electrical heating has been in a higher position relatively this moment, adjusts the interior fan 5 and moves according to the second wind speed this moment, adjusts air guide door 6 of air conditioner 1 simultaneously and keeps the biggest air-out angle. The second wind speed is greater than the first wind speed, and generally, the air conditioner 1 includes three gears, i.e., a low wind speed, a medium wind speed, and a high wind speed.
Step S304: when the air conditioner 1 is in the fourth working state by electric heating, the air conditioner 1 stops the electric heating operation, the inner fan 5 is controlled to operate according to the highest wind speed, and the air guide door 6 is adjusted to keep the maximum wind outlet angle.
When the air conditioner 1 is in the fourth operating condition by electric heating, the fourth operating condition is a dangerous condition, if the electric heating temperature of the air conditioner 1 continuously rises, safety accidents are easily caused, the electric heating operation of the air conditioner 1 is stopped at the moment, the power supply of the electric heating is cut off, the inner fan 5 is adjusted to operate according to the highest wind speed, the air guide door 6 is adjusted to keep the maximum wind outlet angle, the heat dissipation of the electric heating surface is accelerated, and the temperature of the electric heating is prevented from continuously rising.
In this embodiment, the method further includes: when the electric heating of the air conditioner 1 is in the fourth working state and the duration time is longer than the seventh preset time length M7And controlling the inner fan 5 to operate according to the highest wind speed, adjusting the air guide door 6 to keep the maximum air outlet angle, and controlling the air conditioner 1 to report errors. If the electric heating of the air conditioner 1 is always in the fourth working state, the seventh preset time period M is continued7In the above, if the fourth operating state is not automatically exited, the air conditioner 1 has a fault, the power supply for electric heating is cut off, the inner fan 5 is controlled to operate at the highest wind speed, the air guide door 6 is adjusted to maintain the maximum wind outlet angle, and the air conditioner 1 is controlled to report an error, for example, an audible and visual alarm is used to report an error, or an error code is displayed on a display screen. The above-mentionedA seventh preset duration M7But is not limited thereto, may be set to 10 seconds.
It should be noted that the substeps of step S30 are continuous and uninterrupted adjustment processes for adjusting the operation mode of the air conditioner 1 whose operation state has been determined, and the substeps of step S20.
It should be noted that, when the user controls the air conditioner 1 to shut down, if it is detected that the electric heating temperature Tem of the air conditioner 1 is higher than the seventh preset temperature T7While, the seventh preset temperature T7Controlling the inner fan 5 to maintain the current wind speed to operate when the temperature is higher than the room temperature, and adjusting the air guide door 6 to keep the maximum air outlet angle until the electric heating temperature Tem of the air conditioner 1 is lower than the eighth preset temperature T8Stopping the operation of the inner fan 5 and closing the air guide door 6, wherein T8≤T7For example, in the present embodiment, T8It can be set to room temperature.
Third embodiment
Referring to fig. 5, the air-conditioning electric heating thermal protection device 7 may be used to execute the air-conditioning electric heating thermal protection method provided in the second embodiment, and it should be noted that the basic principle and the generated technical effect of the air-conditioning electric heating thermal protection device 7 provided in the present embodiment are the same as those of the air-conditioning electric heating thermal protection method provided in the second embodiment, and for the sake of brief description, no part of the present embodiment is mentioned, and reference may be made to the corresponding contents in the above embodiments.
The air conditioner electric heating thermal protection device 7 comprises a temperature acquisition unit 8, a state determination unit 9 and an operation adjustment unit 10.
The temperature obtaining unit 8 is configured to obtain an electric heating temperature Tem of the air conditioner 1 at preset time intervals.
It is to be understood that, in a preferred embodiment, the temperature obtaining unit 8 may be used to perform step S10.
And the state determining unit 9 is used for determining the working state of the air conditioner 1 in the electric heating mode according to the electric heating temperature Tem of the air conditioner 1.
It is to be understood that in a preferred embodiment, the state determination unit 9 may be configured to perform step S20.
And the work adjusting unit 10 is used for adjusting the work mode of the air conditioner 1 according to the work state of the electric heating of the air conditioner 1.
It is to be understood that in a preferred embodiment, the operation adjusting unit 10 may be configured to perform step S30.
In summary, the invention provides an air conditioner electric heating thermal protection method, an air conditioner electric heating thermal protection device and an air conditioner. The air conditioner electric heating thermal protection method comprises the steps of obtaining the electric heating temperature of an air conditioner at preset time intervals; confirming the working state of the air conditioner in the electric heating mode according to the electric heating temperature of the air conditioner; according to the working state that the electric heating of air conditioner is located, adjust the operating mode of air conditioner, through the operating temperature of real-time detection electric heating, according to the real-time temperature adjustment air conditioner's of electric heating operating state, when electric heating temperature rose, adjustment wind speed size and air output improved thermal cycle efficiency, reduced electric heating temperature, made the temperature of electric heating be in the safety range, ensured that the electric heating does not appear unrecoverable protection, prolonged the life of air conditioner effectively, eliminated the potential safety hazard simultaneously.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. An air conditioner electric heating thermal protection method is characterized by comprising the following steps:
acquiring the electric heating temperature Tem of the air conditioner (1) at preset time intervals;
confirming the working state of the air conditioner (1) in the electric heating mode according to the electric heating temperature Tem of the air conditioner (1);
adjusting the working mode of the air conditioner (1) according to the working state of the electric heating of the air conditioner (1);
the step of confirming the working state of the air conditioner (1) according to the electric heating temperature Tem of the air conditioner (1) comprises the following steps:
when the electric heating temperature Tem of the air conditioner (1)<T2When the air conditioner is in the first working state, the electric heating of the air conditioner (1) is confirmed;
when the electric heating temperature Tem of the air conditioner (1) is more than or equal to T2And lasts for a first preset duration M1When the air conditioner is in the first working state, the air conditioner (1) is confirmed to be in a first working state;
when the electric heating temperature Tem of the air conditioner (1) is more than or equal to T4And lasts for a second preset time length M2When the air conditioner (1) is in the third working state, T4>T2；
When the electric heating temperature Tem of the air conditioner (1) is more than or equal to T6And lasts for a third preset time length M3When the air conditioner (1) is in the fourth working state, T6>T4。
2. The air conditioner electric heating heat protection method according to claim 1, wherein the adjusting the operation mode of the air conditioner (1) according to the operation state of the air conditioner (1) in which the electric heating is performed specifically comprises:
when the air conditioner (1) is in a first working state by electric heating, an inner fan (5) and an air guide door (6) of the air conditioner (1) operate according to a mode set by a user;
when the air conditioner (1) is in a second working state by electric heating, the inner fan (5) is controlled to operate according to a first air speed, and the air guide door (6) is adjusted to operate to a maximum air outlet angle;
when the air conditioner (1) is in a third working state by electric heating, the inner fan (5) is controlled to operate according to a second air speed, and the air guide door (6) is adjusted to keep the maximum air outlet angle;
when the air conditioner (1) is in the fourth working state through electric heating, the air conditioner (1) stops operating through electric heating, the inner fan (5) is controlled to operate according to the highest wind speed, and the air guide door (6) is adjusted to keep the maximum wind outlet angle.
3. The air conditioner electric heating heat protection method according to claim 2, wherein the step of adjusting the operation mode of the air conditioner (1) according to the operation state of the air conditioner (1) electric heating further comprises:
when the electric heating of the air conditioner (1) is in a second working state, if the electric heating temperature Tem of the air conditioner (1)<T1And lasts for a fourth preset time length M4When the air conditioner (1) is started, the air conditioner is confirmed to enter a first working state to operate, wherein T1<T2；
When the electric heating of the air conditioner (1) is in a third working state, if the electric heating temperature Tem of the air conditioner (1)<T3And lasts for a fifth preset time period M5When the air conditioner (1) is started, the air conditioner is confirmed to enter a second working state to operate, wherein T3<T4；
When the electric heating of the air conditioner (1) is in a fourth working state, if the electric heating temperature Tem of the air conditioner (1)<T5And last for a sixth preset duration M6When the air conditioner (1) is electrically heated, the air conditioner is confirmed to exit from a fourth working state, wherein T5<T6。
4. The air conditioner electric heating heat protection method according to claim 3, wherein the step of confirming that the air conditioner (1) electrically heats and exits the fourth operating state comprises:
if said T is5>T4When the air conditioner (1) is electrically heated and exits from the fourth working state, the air conditioner enters a third working state to operate;
if said T is5<T3When the air conditioner (1) is electrically heated and exits from the fourth working state, the air conditioner enters a second working state to operate;
if said T is5<T2When the air conditioner (1) is electrically heated and exits from the fourth working state, the air conditioner enters the first working stateAnd performing state operation.
5. The air conditioner electric heating heat protection method according to claim 2, characterized in that when a user controls the air conditioner (1) to be shut down, if the electric heating temperature Tem ≧ T of the air conditioner (1) is detected7And controlling the inner fan (5) to maintain the current wind speed to operate, and adjusting the air guide door (6) to keep the maximum air outlet angle until the electric heating temperature Tem of the air conditioner (1)<T8Stopping the operation of the inner fan (5), and closing the air guide door (6), wherein T8≤T7。
6. An air conditioner electric heating heat protection method as claimed in claim 2, characterized in that the method further comprises: when the air conditioner (1) is in a fourth working state by electric heating and the duration time is longer than a seventh preset time length M7And when the air conditioner works, the inner fan (5) is controlled to operate according to the highest wind speed, the air guide door (6) is adjusted to keep the maximum air outlet angle, and the air conditioner (1) is controlled to report errors.
7. An air conditioner electric heating thermal protection method as claimed in claim 2, wherein the first wind speed is less than a second wind speed, and the second wind speed is less than a highest wind speed.
8. An air-conditioning electric heating thermal protection device, characterized in that the air-conditioning electric heating thermal protection device (7) comprises:
the temperature acquisition unit (8) is used for acquiring the electric heating temperature Tem of the air conditioner (1) at preset time intervals;
the state determining unit (9) is used for determining the working state of the air conditioner (1) in the electric heating mode according to the electric heating temperature Tem of the air conditioner (1); when the electric heating temperature Tem of the air conditioner (1)<T2When the air conditioner is in the first working state, the electric heating of the air conditioner (1) is confirmed; when the electric heating temperature Tem of the air conditioner (1) is more than or equal to T2And lasts for a first preset duration M1When the air conditioner is in the first working state, the air conditioner (1) is confirmed to be in a first working state; when the electric heating temperature Tem of the air conditioner (1) is more than or equal to T4And lasts for a second preset time length M2When the air conditioner (1) is in the third working state, T4>T2(ii) a When the electric heating temperature Tem of the air conditioner (1) is more than or equal to T6And lasts for a third preset time length M3When the air conditioner (1) is in the fourth working state, T6>T4；
And the work adjusting unit (10) is used for adjusting the work mode of the air conditioner (1) according to the work state of the electric heating of the air conditioner (1).
9. An air conditioner, characterized in that the air conditioner (1) comprises: memory (3), controller (2) and air conditioner electrical heating thermal protection device (7), air conditioner electrical heating thermal protection device (7) install in memory (3) and include one or more by the software function module of controller (2) execution, air conditioner electrical heating thermal protection device (7) include:
the temperature acquisition unit (8) is used for acquiring the electric heating temperature Tem of the air conditioner (1) at preset time intervals;
the state determining unit (9) is used for determining the working state of the air conditioner (1) in the electric heating mode according to the electric heating temperature Tem of the air conditioner (1); when the electric heating temperature Tem of the air conditioner (1)<T2When the air conditioner is in the first working state, the electric heating of the air conditioner (1) is confirmed; when the electric heating temperature Tem of the air conditioner (1) is more than or equal to T2And lasts for a first preset duration M1When the air conditioner is in the first working state, the air conditioner (1) is confirmed to be in a first working state; when the electric heating temperature Tem of the air conditioner (1) is more than or equal to T4And lasts for a second preset time length M2When the air conditioner (1) is in the third working state, T4>T2(ii) a When the electric heating temperature Tem of the air conditioner (1) is more than or equal to T6And lasts for a third preset time length M3When the air conditioner (1) is in the fourth working state, T6>T4；
And the work adjusting unit (10) is used for adjusting the work mode of the air conditioner (1) according to the work state of the electric heating of the air conditioner (1).
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| CN201811427753.5A CN109237717B (en) | 2018-11-27 | 2018-11-27 | Air conditioner electric heating thermal protection method and device and air conditioner |
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| CN110398049B (en) * | 2019-07-26 | 2021-03-19 | 广东美的暖通设备有限公司 | Air conditioner control method, air conditioner and computer readable storage medium |
| CN112197399B (en) * | 2020-09-30 | 2021-08-13 | 珠海格力电器股份有限公司 | PTC electric heating method and equipment and air conditioner |
| CN113137695A (en) * | 2021-04-14 | 2021-07-20 | 宁波奥克斯电气股份有限公司 | Control method and device for reliable operation of electric heating of air conditioner and air conditioner |
| CN113465148A (en) * | 2021-04-29 | 2021-10-01 | 青岛海尔空调器有限总公司 | Air conditioner electric auxiliary heat control method and device, electronic equipment and storage medium |
| CN115076887A (en) * | 2022-05-26 | 2022-09-20 | 重庆海尔空调器有限公司 | Control method and device for preventing air conditioner from overheating |
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| JPH06288599A (en) * | 1993-04-05 | 1994-10-11 | Matsushita Refrig Co Ltd | Air conditioner |
| KR20020003646A (en) * | 2000-06-22 | 2002-01-15 | 구자홍 | Safety apparatus of dual-voltage electric heater of package air-conditioner |
| CN102003767B (en) * | 2009-09-02 | 2013-04-10 | 珠海格力电器股份有限公司 | Control method and device for assistant electrical heating of air conditioner |
| CN104053254B (en) * | 2014-07-03 | 2016-03-16 | 珠海格力电器股份有限公司 | A kind of electric heater frost protection circuit and guard method |
| CN104214900B (en) * | 2014-09-10 | 2016-09-28 | 美的集团武汉制冷设备有限公司 | The auxiliary heat control device of electricity, method and air-conditioner |
| CN204943672U (en) * | 2015-07-17 | 2016-01-06 | 广东美的暖通设备有限公司 | A kind of air conditioner electric firing equipment internal temperature field control device and air-conditioning |
| CN105757886B (en) * | 2016-03-03 | 2018-12-14 | 珠海格力电器股份有限公司 | Air-conditioning heating control method and device |
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