CN104633847B - The implementation method and device of air conditioner protection circuit - Google Patents
The implementation method and device of air conditioner protection circuit Download PDFInfo
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- CN104633847B CN104633847B CN201410848771.6A CN201410848771A CN104633847B CN 104633847 B CN104633847 B CN 104633847B CN 201410848771 A CN201410848771 A CN 201410848771A CN 104633847 B CN104633847 B CN 104633847B
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The present invention proposes the implementation method and device of a kind of air conditioner protection circuit, and the implementation method of the air conditioner protection circuit includes the temperature of functional module to be protected in detection air-conditioning；When the temperature of the detection is more than default temperature threshold, protection treatment is carried out, the protection treatment includes at least one in following item：The wind speed of the outdoor fan of air-conditioner is set as wind high, the running frequency of air-conditioner is limited, control air-conditioner disables compressor.The method can improve temperature protection effect.
Description
Technical field
The present invention relates to technical field of household appliance manufacture, more particularly to a kind of air conditioner protection circuit implementation method and device.
Background technology
Outdoor fan in existing air-conditioner is due in outdoor, being easily affected by the external environment.It is big in outdoor fan
Power model power consumption in itself is just very big, if under also in summer high-temperature environment, will produce many heats, in order to protect
Component in high power module to high power module, it is necessary to carry out temperature protection.
At present, the method for commonly using temperature protection is that radiator is added on high power module, but, in temperature compared with Gao Shicai
Can not fully be lowered the temperature with radiator, therefore, this mode temperature protection effect is not ideal enough.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of implementation method of air conditioner protection circuit, the method can be carried
High-temperature protecting effect.
Device is realized it is another object of the present invention to propose a kind of air conditioner protection circuit.
To reach above-mentioned purpose, the implementation method of the air conditioner protection circuit that first aspect present invention embodiment is proposed, including：
The temperature of functional module to be protected in detection air-conditioning；When the temperature of the detection is more than default temperature threshold, protected
Shield treatment, the protection treatment includes at least one in following item：The wind speed of the outdoor fan of air-conditioner is set as wind high,
The running frequency of air-conditioner is limited, control air-conditioner disables compressor.
The implementation method of the air conditioner protection circuit that first aspect present invention embodiment is proposed, to protect in air-conditioning by being detected
Functional module temperature, and protection treatment is carried out according to temperature, different protections treatment can be carried out according to the difference of temperature
Means, so as to improve temperature protection effect.
To reach above-mentioned purpose, the air conditioner protection circuit that second aspect present invention embodiment is proposed realizes device, including：
First detection module, the temperature for detecting functional module to be protected in air-conditioning；Protection module, for the temperature in the detection
When degree is more than default temperature threshold, protection treatment is carried out, the protection treatment includes at least one in following item：By air-conditioning
The wind speed of the outdoor fan of device is set as wind high, limits the running frequency of air-conditioner, and control air-conditioner disables compressor.
The air conditioner protection circuit that second aspect present invention embodiment is proposed realizes device, to protect in air-conditioning by being detected
Functional module temperature, and protection treatment is carried out according to temperature, different protections treatment can be carried out according to the difference of temperature
Means, so as to improve temperature protection effect.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic flow sheet of the implementation method of the air conditioner protection circuit that one embodiment of the invention is proposed；
Fig. 2 is the composition structural representation of air conditioner protection circuit in the embodiment of the present invention；
Fig. 3 is the schematic diagram of air-blower control when compressor normally runs in the embodiment of the present invention；
Fig. 4 is the schematic diagram of air-blower control when compressor normally runs in the embodiment of the present invention and FREQUENCY CONTROL；
Air-blower control schematic diagram when Fig. 5 a are a kind of compressors out of service in the embodiment of the present invention；
Air-blower control schematic diagram when Fig. 5 b are another compressors out of service in the embodiment of the present invention；
Fig. 6 is the schematic flow sheet of the implementation method of the air conditioner protection circuit that another embodiment of the present invention is proposed；
Fig. 7 is the structural representation for realizing device of the air conditioner protection circuit that another embodiment of the present invention is proposed；
Fig. 8 is the structural representation for realizing device of the air conditioner protection circuit that another embodiment of the present invention is proposed.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.Conversely, this
Inventive embodiment includes all changes fallen into the range of the spiritual and intension of attached claims, modification and is equal to
Thing.
Fig. 1 is the schematic flow sheet of the implementation method of the air conditioner protection circuit that one embodiment of the invention is proposed, the method bag
Include：
S11：The temperature of functional module to be protected in detection air-conditioning.
Functional module to be protected can pre-set, for example, functional module to be protected is the intelligent work(in air-conditioner
Rate module (Intelligent Power Module, IPM).
IPM is for driving the high power device of compressor operating in air-conditioner.
Generally, the upper temperature that temperature sensor can be set, IPM can be detected by the temperature sensor of IPM.
Specifically, referring to Fig. 2, realize that the module of the method is properly termed as air conditioner protection circuit, air conditioner protection circuit can be with
Including temperature detecting module 21, fan control module 22 and frequency control module 23 are that IPM is with functional module to be protected
Example, temperature detecting module 21 is used to detect the temperature of IPM, and fan control module 22 is used for according to the temperature control air-conditioning for detecting
The wind speed of the outdoor fan of device, frequency control module 23 be used for according to the running frequency of temperature control air-conditioner for detecting or
Control compressor shutdown, running frequency refers to the running frequency of compressor.
S12：When the temperature of the detection is more than default temperature threshold, protection treatment, the protection treatment bag are carried out
Include at least one in following item：The wind speed of the outdoor fan of air-conditioner is set as wind high, the running frequency of air-conditioner is limited,
Control air-conditioner disables compressor.
Wherein, the temperature detected when the temperature of detection can be compressor operating, or, the temperature of detection can also be
The temperature that compressor is detected when disabling.
The temperature of detection can be represented with T (ipm).
It is optionally, described described during the temperature detected when the temperature of detection is compressor operating in one embodiment
When the temperature of detection is more than default temperature threshold, protection treatment is carried out, including：
When the temperature of the detection is more than default first temperature threshold, the wind speed of the outdoor fan of air-conditioner is set
It is wind high；
Wherein, the first temperature threshold can be represented with T1.
For example, with reference to Fig. 3, as T (ipm)>T1, i.e., when in pressure wind region high, the blower fan control in air conditioner protection circuit
Molding block is carried out protection, and the wind speed of the outdoor fan of air-conditioner is set into wind high, can specifically use mandatory means
Realize, i.e., no matter current wind speed is wind high, or low wind, and the wind speed of the outdoor fan of air-conditioner is both configured into wind high.With this
Control the temperature of IPM so that the temperature of IPM will not be too high, reaches radiating effect.
In addition, it is necessary to explanation, the wind high set in the present embodiment refers to the highest wind velocity that air-conditioning can reach, specifically
The wind high or superelevation wind for generally using can be corresponded to.
Wind high is set to above by by the wind speed of outdoor fan, the temperature of IPM can be to a certain extent reduced, but
It is that under some scenes, when the temperature of IPM can not be prevented to continue to rise by setting wind high, can also carry out：
When the temperature of the detection is more than default second temperature threshold value, the running frequency of air-conditioner is adjusted at a slow speed
Raising frequency；
Wherein, second temperature threshold value can be represented with T2, and T2 is more than T1.
For example, with reference to Fig. 4, as T (ipm)>During T2, i.e., in rising frequency domain at a slow speed, the frequency control in air conditioner protection circuit
Molding block is carried out protection, and the running frequency of air-conditioner is adjusted into raising frequency at a slow speed, for example, the initial raising frequency speed of air-conditioner
It is 1HZ/S, then the raising frequency speed after adjusting is 0.2HZ/S.By reducing the frequency rate of climb, the temperature of air-conditioner can be reduced
The rate of climb, controls temperature to rise to a certain extent.
If after reducing raising frequency speed, the temperature of IPM continues to rise, and the method can also carry out：
When the temperature of the detection is more than default three temperature threshold, the running frequency of air-conditioner is set to maximum
Running frequency；
Wherein, the 3rd temperature threshold can be represented with T3, and T3 is more than T2.
For example, with reference to Fig. 4, as T (ipm)>During T3, i.e., in limit frequency domain, the FREQUENCY CONTROL mould in air conditioner protection circuit
Block is carried out protection, and the running frequency of air-conditioner is set into maximum frequency of operation.Maximum is limited to by by running frequency
Running frequency, it is ensured that running frequency keeps dropping within the specific limits, prevents the temperature of IPM from rising as far as possible.
If after limiting maximum frequency of operation, the temperature of IPM continues to rise, and the method can also carry out：
When the temperature of the detection is more than default four temperature threshold, control air-conditioner disables compressor；
Wherein, the 4th temperature threshold can be represented with T4, and T4 is more than T3.
For example, with reference to Fig. 4, as T (ipm)>During T4, i.e., the FREQUENCY CONTROL mould in stop area, air conditioner protection circuit
Block is carried out protection, and controls compressor shutdown, for example, frequency control module sends control instruction, control instruction to compressor
For indicating compressor shutdown, compressor is shut down according to control instruction.After compressor shutdown, the temperature of IPM can decline therewith, when
After another threshold value is dropped at a temperature of IPM, IPM can be restarted.
It is understood that working as T (ipm)>During T1, when frequency control module performs defencive function, blast velocity control module can
With the wind high for being always maintained at setting, for example, T (ipm)>During T2, not only be adjusted to for running frequency to rise at a slow speed by frequency control module
Frequently, blast velocity control module is also always maintained at wind high.
In addition, can be with real-time detection temperature, when blast velocity control module sets the wind speed of outdoor fan in temperature detection
It is Gao Fenghou, if detect temperature less than default five temperature threshold, the fortune of the outdoor fan of air-conditioner can be recovered
Sector-style speed.
For example, with reference to Fig. 3, default 5th temperature threshold can be represented with T5, and T5<T1.As T (ipm)<T5, that is, locate
When normal operating zone, the operating air velocity of outdoor fan can be recovered, for example, returning to low wind from wind high.By setting T5
Rather than as T (ipm)<Just recover low wind during T1, air-conditioner can be avoided to be toggled in low wind and Gao Fengzhong, improve user
Comfortableness.
It is optionally, described in institute when the temperature of detection is the temperature detected when compressor is disabled in another embodiment
When the temperature for stating detection is more than default temperature threshold, protection treatment is carried out, including：
When the temperature of the detection is more than default six temperature threshold, the air-conditioner is kept to disable compressor, with
And, the wind speed of the outdoor fan of air-conditioner is set as wind high, and keep wind state high until the temperature for detecting again is less than institute
The 6th temperature threshold is stated, or, reach default duration threshold.
For example, default 6th temperature threshold can be represented with T6.
In fig 5 a, A represents that compressor stops the wind speed of preceding outdoor fan；B is represented and is forced the wind speed of outdoor fan to set
Wind high is set to, wherein, wind high is broad sense, including common wind high or superelevation wind；C represents stopping outdoor fan；D represents T
(ipm) versus time curve；T represents wind state duration threshold value high.Referring to Fig. 5 a, before compressor shutdown, according to
Wind speed operation (A) before shutdown, after compressor shutdown, if the temperature T (ipm) for detecting>T6, then can force wind speed
Wind high (B) is set to, until T (ipm) is equal to T6, as T (ipm)<During T6, blower fan (C) can be stopped.
In figure 5b, A ' represents that compressor stops the wind speed of preceding outdoor fan；B ' is represented and is forced the wind speed of outdoor fan
Wind high is set to, wherein, wind high is broad sense, including common wind high or superelevation wind；C ' is represented and is stopped outdoor fan；D ' is represented
T (ipm) versus time curve；T represents wind state duration threshold value high.Referring to Fig. 5 b, before compressor shutdown, according to
Wind speed operation (A ') before shutdown, after compressor shutdown, if the temperature T (ipm) for detecting>T6, then can be strong by wind speed
Set up and be set to wind high (B '), until duration t reaches predetermined threshold value, when the duration predetermined threshold value t is reached, can stop
Blower fan (C ').
The present embodiment carries out protection treatment by detecting the temperature of functional module to be protected in air-conditioning according to temperature,
Different protection processing means can be carried out according to the difference of temperature, so as to improve temperature protection effect.
Fig. 6 is the schematic flow sheet of the implementation method of the air conditioner protection circuit that another embodiment of the present invention is proposed, this implementation
Example is so that functional module to be protected is IPM as an example.The method includes：
S601：The temperature of IPM in detection air-conditioner.
IPM is for driving the high power device of compressor operating in air-conditioner.
Generally, the upper temperature that temperature sensor can be set, IPM can be detected by the temperature sensor of IPM.
Specifically, referring to Fig. 2, realize that the module of the method is properly termed as air conditioner protection circuit, air conditioner protection circuit can be with
Including temperature detecting module 21, fan control module 22 and frequency control module 23 are that IPM is with functional module to be protected
Example, temperature detecting module 21 is used to detect the temperature of IPM, and fan control module 22 is used for according to the temperature control air-conditioning for detecting
The wind speed of the outdoor fan of device, frequency control module 23 is used for the running frequency according to the temperature control air-conditioner for detecting, fortune
Line frequency refers to the running frequency of compressor, or, control compressor shutdown.
The temperature of detection can be represented with T (ipm).
S602：Judge whether the compressor of air-conditioner currently disables, if so, performing S611, otherwise, perform S603.
S603：Judge that whether T (ipm), more than default first temperature threshold, if so, then performing step S604, otherwise holds
Row step S614.
For example, for the IPM of air-conditioner in the present embodiment, default first temperature threshold T1 can be 70 degree, therefore, when
There is T (ipm) temperature and be more than 70 degree, perform step S604.
S604：The outdoor fan wind speed of air-conditioner is set as wind high.
When there is T (ipm) temperature more than 70 degree, the fan control module in air conditioner protection circuit is by the outdoor wind of air-conditioner
Machine wind speed is set to wind high, can specifically be realized using mandatory means, no matter for example, air-conditioning is currently wind high or low
Wind, is both configured to wind high.In addition, it is necessary to explanation, the wind high set in the present embodiment refers to the highest that air-conditioning can reach
Wind speed, can specifically correspond to the wind high or superelevation wind for generally using, and the temperature of IPM be controlled with this so that the temperature of IPM will not
It is too high, reach radiating effect.
S605：Judge that whether T (ipm), more than default second temperature threshold value, if so, then performing step S606, otherwise holds
Row step S614.
In the present embodiment, default second temperature threshold value T2 can be 75 degree.
When T (ipm) is more than 75 degree, step S606 is performed.
S606：The running frequency of air-conditioner is adjusted to raising frequency at a slow speed.
When T (ipm) is more than 75 degree, frequency control module slows down the raising frequency speed of the running frequency of compressor, for example,
Raising frequency speed under normal circumstances is 1Hz/S, the raising frequency speed after slowing down will for 0.2Hz/S or other be conducive to air-conditioner steady
Fixed frequency.
S607：Judge that whether T (ipm), more than default 3rd temperature threshold, if so, then performing step S608, otherwise holds
Row step S614.
In the present embodiment, default 3rd temperature threshold T3 can be 80 degree.
When T (ipm) is more than 80 degree, step S608 is performed.
S608:The outdoor running frequency of air-conditioner is set to maximum frequency of operation.
When T (ipm) is more than 80 degree, the compressor operating frequency that frequency control module will limit air-conditioner continues to rise, will
Current running frequency is set to maximum frequency of operation.In such cases, the running frequency of air-conditioner can only be due to other reasonses
Caused frequency reducing and be unable to raising frequency, until T (ipm) temperature drops to less than 80 degree.
S609：Judge that whether T (ipm), more than default 4th temperature threshold, if so, then performing step S610, otherwise holds
Row step S614.
In the present embodiment, default 4th temperature threshold T4 can be 90 degree.
When T (ipm) is more than 90 degree, step S610 is performed.
S610：Control air-conditioner disables compressor.
When T (ipm) is raised to more than 90 degree, then air-conditioner disables compressor immediately.
Optionally, when T (ipm) temperature is dropped to below 75 degree, compressor can be restarted.
S611：Whether T (ipm) is judged more than default 7th temperature threshold, if so, performing S612, otherwise, is performed
S613。
7th temperature threshold is, for example, 80 degree.
S612：Do not carry out temperature protection.
Can there is the situation of certain temperature drift in temperature sensor, so when establishing machine by cable and occur as soon as on air-conditioner is firm in itself
Detection temperature reaches more than 80 degree, then the problem of drift of temperature sensor itself is may be considered, if continuing keeping temperature
When defencive function is effective, frequency reducing and blower fan misoperation by mistake can be caused, so can not now carry out temperature protection, temperature is set and is protected
Protective function is invalid.
S613：Judge that whether T (ipm), more than default 6th temperature threshold, if so, then performing step S615, otherwise holds
Row step S614.
In the present embodiment, default 6th temperature threshold T6 can be 70 degree.
When T (ipm) is more than 70 degree, step S615 is performed.
S614：Keep current state.
For example, keep current wind speed or running frequency, and real-time detection IPM temperature.
In addition, it is necessary to explanation, when T (ipm) is more than T1, is all to maintain wind state high.
Optionally, as T (ipm)<T5 recovers the operating air velocity of the outdoor fan of air-conditioner.
S615：The outdoor fan wind speed of air-conditioner is set as the temperature of IPM in wind high, and real-time detection air-conditioner.
When T (ipm) is more than 70 degree, the air-conditioner is kept to disable compressor, and, by the outdoor fan wind of air-conditioner
Speed is set as wind high, and keeps wind state high up to the temperature for detecting again is less than the 6th temperature threshold, or, reach pre-
If duration threshold.
S616：The temperature for detecting again is less than default 6th temperature threshold, or, the wind duration high reaches default
During duration threshold, wind high is blown in stopping.
In the present embodiment, default 6th temperature threshold can be 70 degree.Default duration threshold can be 2 points
Clock.
For example, wind state high is kept up to T (ipm) is less than 70 degree, or, wind state high is kept until the duration reaches
2 minutes.
The present embodiment carries out protection treatment by detecting the temperature of functional module to be protected in air-conditioning according to temperature,
Different protection processing means can be carried out according to the difference of temperature, so as to improve temperature protection effect.In addition, the present embodiment can
Each temperature threshold is selected with according to actual conditions, actual demand is met.
Fig. 7 is the structural representation for realizing device of the air conditioner protection circuit that another embodiment of the present invention is proposed, the device
70 include first detection module 71 and protection module 72.
First detection module 71, the temperature for detecting functional module to be protected in air-conditioning.
Functional module to be protected can pre-set, for example, functional module to be protected is the intelligent work(in air-conditioner
Rate module (Intelligent Power Module, IPM).
IPM is for driving the high power device of compressor operating in air-conditioner.
Generally, the upper temperature that temperature sensor can be set, IPM can be detected by the temperature sensor of IPM.
Specifically, referring to Fig. 2, realize that the module of the method is properly termed as air conditioner protection circuit, air conditioner protection circuit can be with
Including temperature detecting module 21, fan control module 22 and frequency control module 23 are that IPM is with functional module to be protected
Example, temperature detecting module 21 is used to detect the temperature of IPM, and fan control module 22 is used for according to the temperature control air-conditioning for detecting
The wind speed of the outdoor fan of device, frequency control module 23 be used for according to the running frequency of temperature control air-conditioner for detecting or
Control compressor shutdown, running frequency refers to the running frequency of compressor.
Protection module 72, it is described for when the temperature of the detection is more than default temperature threshold, carrying out protection treatment
Protection treatment includes at least one in following item：The wind speed of the outdoor fan of air-conditioner is set as wind high, air-conditioner is limited
Running frequency, control air-conditioner disable compressor.
Wherein, the temperature detected when the temperature of detection can be compressor operating, or, the temperature of detection can also be
The temperature that compressor is detected when disabling.
The temperature of detection can be represented with T (ipm).
In one embodiment, the temperature that the temperature of the detection is detected when being compressor operating, the protection module 72 has
Body is used for：
When the temperature of the detection is more than default first temperature threshold, the wind speed of the outdoor fan of air-conditioner is set
It is wind high；
Wherein, the first temperature threshold can be represented with T1.
For example, with reference to Fig. 3, as T (ipm)>T1, i.e., when in pressure wind region high, the blower fan control in air conditioner protection circuit
Molding block is carried out protection, and the wind speed of the outdoor fan of air-conditioner is set into wind high, can specifically use mandatory means
Realize, i.e., no matter current wind speed is wind high, or low wind, and the wind speed of the outdoor fan of air-conditioner is both configured into wind high.With this
Control the temperature of IPM so that the temperature of IPM will not be too high, reaches radiating effect.
In addition, it is necessary to explanation, the wind high set in the present embodiment refers to the highest wind velocity that air-conditioning can reach, specifically
The wind high or superelevation wind for generally using can be corresponded to.
Wind high is set to above by by the wind speed of outdoor fan, the temperature of IPM can be to a certain extent reduced, but
It is that under some scenes, when the temperature of IPM can not be prevented to continue to rise by setting wind high, can also carry out：
When the temperature of the detection is more than default second temperature threshold value, the running frequency of air-conditioner is adjusted at a slow speed
Raising frequency；
Wherein, second temperature threshold value can be represented with T2, and T2 is more than T1.
For example, with reference to Fig. 4, as T (ipm)>During T2, i.e., in rising frequency domain at a slow speed, the frequency control in air conditioner protection circuit
Molding block is carried out protection, and the running frequency of air-conditioner is adjusted into raising frequency at a slow speed, for example, the initial raising frequency speed of air-conditioner
It is 1HZ/S, then the raising frequency speed after adjusting is 0.2HZ/S.By reducing the frequency rate of climb, the temperature of air-conditioner can be reduced
The rate of climb, controls temperature to rise to a certain extent.
If after reducing raising frequency speed, the temperature of IPM continues to rise, and the method can also carry out：
When the temperature of the detection is more than default three temperature threshold, the running frequency of air-conditioner is set to maximum
Running frequency；
Wherein, the 3rd temperature threshold can be represented with T3, and T3 is more than T2.
For example, with reference to Fig. 4, as T (ipm)>During T3, i.e., in limit frequency domain, the FREQUENCY CONTROL mould in air conditioner protection circuit
Block is carried out protection, and the running frequency of air-conditioner is set into maximum frequency of operation.Maximum is limited to by by running frequency
Running frequency, it is ensured that running frequency keeps dropping within the specific limits, prevents the temperature of IPM from rising as far as possible.
If after limiting maximum frequency of operation, the temperature of IPM continues to rise, and the method can also carry out：
When the temperature of the detection is more than default four temperature threshold, control air-conditioner disables compressor；
Wherein, the 4th temperature threshold can be represented with T4, and T4 is more than T3.
For example, with reference to Fig. 4, as T (ipm)>During T4, i.e., the FREQUENCY CONTROL mould in stop area, air conditioner protection circuit
Block is carried out protection, and controls compressor shutdown, for example, frequency control module sends control instruction, control instruction to compressor
For indicating compressor shutdown, compressor is shut down according to control instruction.After compressor shutdown, the temperature of IPM can decline therewith, when
After another threshold value is dropped at a temperature of IPM, IPM can be restarted.
In another embodiment, referring to Fig. 8, described device 70 also includes：
Second detection module 73, the temperature for detecting functional module to be protected again；
Recovery module 74, for when the temperature for detecting again is less than default five temperature threshold, recovering air-conditioning
The wind speed of the outdoor fan of device；
Wherein, the 5th temperature threshold<First temperature threshold.
It is understood that working as T (ipm)>During T1, when frequency control module performs defencive function, blast velocity control module can
With the wind high for being always maintained at setting, for example, T (ipm)>During T2, not only be adjusted to for running frequency to rise at a slow speed by frequency control module
Frequently, blast velocity control module is also always maintained at wind high.
In addition, can be with real-time detection temperature, when blast velocity control module sets the wind speed of outdoor fan in temperature detection
It is Gao Fenghou, if detect temperature less than default five temperature threshold, the fortune of the outdoor fan of air-conditioner can be recovered
Sector-style speed.
For example, with reference to Fig. 3, default 5th temperature threshold can be represented with T5, and T5<T1.As T (ipm)<T5, that is, locate
When normal operating zone, the operating air velocity of outdoor fan can be recovered, for example, returning to low wind from wind high.By setting T5
Rather than as T (ipm)<Just recover low wind during T1, air-conditioner can be avoided to be toggled in low wind and Gao Fengzhong, improve user
Comfortableness.
In another embodiment, referring to Fig. 8, the temperature of the detection is the temperature detected when compressor is disabled, the dress
Putting 70 also includes：
Module 75 is kept, for when the temperature of the detection is more than default six temperature threshold, keeping the air-conditioning
Device disables compressor, and, the wind speed of the outdoor fan of air-conditioner is set as wind high, and keep wind state high until examining again
The temperature of survey is less than the 6th temperature threshold, or, reach default duration threshold.
For example, default 6th temperature threshold can be represented with T6.
In fig 5 a, A represents that compressor stops the wind speed of preceding outdoor fan；B is represented and is forced the wind speed of outdoor fan to set
Wind high is set to, wherein, wind high is broad sense, including common wind high or superelevation wind；C represents stopping outdoor fan；D represents T
(ipm) versus time curve；T represents wind state duration threshold value high.Referring to Fig. 5 a, before compressor shutdown, according to
Wind speed operation (A) before shutdown, after compressor shutdown, if the temperature T (ipm) for detecting>T6, then can force wind speed
Wind high (B) is set to, until T (ipm) is equal to T6, as T (ipm)<During T6, blower fan (C) can be stopped.
In figure 5b, A ' represents that compressor stops the wind speed of preceding outdoor fan；B ' is represented and is forced the wind speed of outdoor fan
Wind high is set to, wherein, wind high is broad sense, including common wind high or superelevation wind；C ' is represented and is stopped outdoor fan；D ' is represented
T (ipm) versus time curve；T represents wind state duration threshold value high.Referring to Fig. 5 b, before compressor shutdown, according to
Wind speed operation (A ') before shutdown, after compressor shutdown, if the temperature T (ipm) for detecting>T6, then can be strong by wind speed
Set up and be set to wind high (B '), until duration t reaches predetermined threshold value, when the duration predetermined threshold value t is reached, can stop
Blower fan (C ').
In another embodiment, referring to Fig. 8, the temperature of the detection is the temperature detected when compressor is disabled, the dress
Putting 70 also includes：
Processing module 76, if being more than default 7th temperature threshold for the temperature of the detection, does not carry out the guarantor
Shield treatment.
The present embodiment carries out protection treatment by detecting the temperature of functional module to be protected in air-conditioning according to temperature,
Different protection processing means can be carried out according to the difference of temperature, so as to improve temperature protection effect.
It should be noted that in the description of the invention, term " first ", " second " etc. are only used for describing purpose, without
It is understood that to indicate or implying relative importance.Additionally, in the description of the invention, unless otherwise indicated, the implication of " multiple "
It is two or more.
Any process described otherwise above or method description in flow chart or herein is construed as, and expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussion suitable
Sequence, including function involved by basis by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each several part of the invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In implementation method, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If for example, realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
The rapid hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, during each functional unit in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is to realize in the form of software function module and as independent production marketing or when using, it is also possible to which storage is in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (8)
1. a kind of implementation method of air conditioner protection circuit, it is characterised in that including：
The temperature of functional module to be protected in detection air-conditioning；
When the temperature of the detection is more than default temperature threshold, protection treatment is carried out, the protection treatment includes following item
In at least one：The wind speed of the outdoor fan of air-conditioner is set as wind high, the running frequency of air-conditioner is limited, air-conditioning is controlled
Device disables compressor, wherein, the temperature that the temperature of the detection is detected when being compressor operating, the temperature in the detection
During more than default temperature threshold, protection treatment is carried out, including：It is more than default first temperature threshold in the temperature of the detection
When, the wind speed of the outdoor fan of air-conditioner is set as wind high；It is more than default second temperature threshold value in the temperature of the detection
When, the running frequency of air-conditioner is adjusted to raising frequency at a slow speed；When the temperature of the detection is more than default three temperature threshold,
The running frequency of air-conditioner is set to maximum frequency of operation；It is more than default 4th temperature threshold in the temperature of the detection
When, control air-conditioner disables compressor；Wherein, first temperature threshold<The second temperature threshold value<3rd temperature threshold
Value<4th temperature threshold.
2. method according to claim 1, it is characterised in that the wind speed of the outdoor fan by air-conditioner is set as height
After wind, methods described also includes：
The temperature of functional module to be protected is detected again；
When the temperature for detecting again is less than default five temperature threshold, recover the wind speed of the outdoor fan of air-conditioner；
Wherein, the 5th temperature threshold<First temperature threshold.
3. method according to claim 1, it is characterised in that the temperature of the detection is the temperature detected when compressor is disabled
Degree, when the temperature in the detection is more than default temperature threshold, carries out protection treatment, including：
When the temperature of the detection is more than default six temperature threshold, the air-conditioner is kept to disable compressor, and, will
The wind speed of the outdoor fan of air-conditioner is set as wind high, and keeps wind state high until the temperature for detecting again is less than the described 6th
Temperature threshold, or, reach default duration threshold.
4. method according to claim 1, it is characterised in that the temperature of the detection is the temperature detected when compressor is disabled
Degree, in the detection air-conditioning after the temperature of functional module to be protected, methods described also includes：
If the temperature of the detection is more than default 7th temperature threshold, the protection treatment is not carried out.
5. a kind of air conditioner protection circuit realizes device, it is characterised in that including：
First detection module, the temperature for detecting functional module to be protected in air-conditioning；
Protection module, for when the temperature of the detection is more than default temperature threshold, protection treatment being carried out, at the protection
Reason includes at least one in following item：The wind speed of the outdoor fan of air-conditioner is set as wind high, the operation of air-conditioner is limited
Frequency, control air-conditioner disables compressor, wherein, the temperature that the temperature of the detection is detected when being compressor operating, the guarantor
Shield module specifically for：When the temperature of the detection is more than default first temperature threshold, by the outdoor fan of air-conditioner
Wind speed is set as wind high；When the temperature of the detection is more than default second temperature threshold value, the running frequency of air-conditioner is adjusted
It is whole for raising frequency at a slow speed；When the temperature of the detection is more than default three temperature threshold, the running frequency of air-conditioner is set
It is maximum frequency of operation；When the temperature of the detection is more than default four temperature threshold, control air-conditioner disables compressor；
Wherein, first temperature threshold<The second temperature threshold value<3rd temperature threshold<4th temperature threshold.
6. device according to claim 5, it is characterised in that described device also includes：
Second detection module, the temperature for detecting functional module to be protected again；
Recovery module, for when the temperature for detecting again is less than default five temperature threshold, recovering the room of air-conditioner
The wind speed of outer blower fan；
Wherein, the 5th temperature threshold<First temperature threshold.
7. device according to claim 5, it is characterised in that the temperature of the detection is the temperature detected when compressor is disabled
Degree, described device also includes：
Module is kept, for when the temperature of the detection is more than default six temperature threshold, keeping the air-conditioner to disable
Compressor, and, the wind speed of the outdoor fan of air-conditioner is set as wind high, and keep wind state high until the temperature for detecting again
Degree is less than the 6th temperature threshold, or, reach default duration threshold.
8. device according to claim 5, it is characterised in that the temperature of the detection is the temperature detected when compressor is disabled
Degree, described device also includes：
Processing module, if being more than default 7th temperature threshold for the temperature of the detection, the protection treatment is not carried out.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106225186B (en) * | 2016-09-28 | 2019-07-30 | 广东美的制冷设备有限公司 | Frequency-conversion air-conditioning system and its heat generation control method of power module, device |
| CN107592059A (en) * | 2017-09-19 | 2018-01-16 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of temperature protective device, method, storage medium and equipment |
| CN110887164B (en) * | 2018-09-10 | 2020-12-29 | 青岛海尔空调器有限总公司 | Air conditioner and control method for preventing overhigh temperature of power module of outdoor unit of air conditioner |
| CN109323383B (en) * | 2018-09-12 | 2020-08-18 | 奥克斯空调股份有限公司 | Control method and control device of variable frequency air conditioner in special installation environment and air conditioner |
| CN109236622B (en) * | 2018-09-21 | 2020-03-13 | 宁波奥克斯电气股份有限公司 | Compressor frequency control method and device and air conditioner |
| CN110649571B (en) * | 2019-09-12 | 2022-01-18 | 上海新时达电气股份有限公司 | Over-temperature protection method of variable frequency driver for air conditioner and variable frequency driver thereof |
| CN113137734A (en) * | 2021-03-05 | 2021-07-20 | 海信（山东）空调有限公司 | Air conditioner and control method for outdoor fan of air conditioner |
| CN113137735A (en) * | 2021-03-10 | 2021-07-20 | 海信（山东）空调有限公司 | Air conditioner and control method for outdoor fan of air conditioner |
| CN113944978B (en) * | 2021-11-01 | 2023-03-28 | 宁波奥克斯电气股份有限公司 | Control method of air conditioner and air conditioner |
| CN114264031B (en) * | 2021-12-30 | 2023-05-02 | 宁波奥克斯电气股份有限公司 | Air conditioner, control method and device thereof and readable storage medium |
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