CN110398022A - Air-conditioning overload protection judgment method, device and air conditioner - Google Patents
Air-conditioning overload protection judgment method, device and air conditioner Download PDFInfo
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- CN110398022A CN110398022A CN201910713731.3A CN201910713731A CN110398022A CN 110398022 A CN110398022 A CN 110398022A CN 201910713731 A CN201910713731 A CN 201910713731A CN 110398022 A CN110398022 A CN 110398022A
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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
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The embodiment of the invention provides a kind of air-conditioning overload protection judgment method, device and air conditioners, are related to air-conditioning technical field.Wherein, above-mentioned air-conditioning overload protection judgment method includes: according to the assessment temperature difference, and whether the compressor for prejudging air conditioner starts overload protection；Wherein, the assessment temperature difference is the temperature difference between the room temperature and indoor coil pipe acquired according to the preset time interval；If anticipation compressor has been turned on overload protection, the inner blower for controlling air conditioner is out of service；After inner blower specified duration out of service, the overload protection time numerical value for increasing record is assessed whether according to the freshly harvested assessment temperature difference, the outdoor unit of the air conditioner group to be controlled and shut down when overload protection time numerical value to be more than preset threshold.Accurate, reliable overload of compressor number is obtained by dual judgement, the service life of compressor whether is ensured by the way of stoppage protection convenient for the timely decision of air conditioner, compressor is avoided to be damaged.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of air-conditioning overload protection judgment method, device and sky
Adjust device.
Background technique
If air conditioner is continuously in heavy-duty service state, there is the risk for burning out compressor.However, badly transporting
Under the conditions of row (for example, situations such as encountering low-voltage, condenser dirty stifled, coolant leakage), cannot active off-load fixed frequency air conditioner it is difficult
To avoid the state for entering continued high load operation.
In order to protect compressor, it will usually installation protector on the compressor.Protector is used in compressor coil temperature
It is disconnected when beyond normal operating range, keeps compressor out of service, the suction when compressor coil temperature belongs to normal operating range
It closes, the mode for working normally compressor, achievees the effect that protect compressor.However, the protection number of protector is limited, frequently
Overload protection is easy to that protector is made to fail, in this way, compressor will damage.In addition, due to cost considerations, protector structure
Simply, it is generally difficult to obtain the number for the overload protection realized from protector.
Therefore, in the case where additionally not increasing hardware configuration, it can be realized the protection number that protector is recognized accurately
It transfinites, it is out of service in order to control air conditioner in time, it is all very crucial to the service life for extending compressor and protector.
Summary of the invention
Problems solved by the invention is can be realized and protection is recognized accurately in the case where additionally not increasing hardware configuration
The protection number of device, it is out of service to control air conditioner in time.
To solve the above problems, the embodiment of the present invention provides a kind of air-conditioning overload protection judgment method, the air-conditioning overload
Protection judgment method includes: according to the assessment temperature difference, and whether the compressor for prejudging air conditioner starts overload protection；Wherein, institute's commentary
Estimating the temperature difference includes the temperature difference between the room temperature and indoor coil pipe acquired according to the preset time interval；If anticipation institute
It states compressor and has been turned on overload protection, then the inner blower for controlling the air conditioner is out of service；It is out of service in the inner blower
After specified duration, the overload protection time numerical value for increasing record is assessed whether, according to the freshly harvested assessment temperature difference so as in institute
When stating overload protection time numerical value more than preset threshold, controls the outdoor unit of the air conditioner group and shut down.It is, utilizing assessment
After overload protection occurs in temperature difference anticipation, stop inner blower, judges whether overload protection occurred again, and according to judging result tune
Whole overload protection time numerical value.The overload protection time numerical value made by the cooperation repeatedly determined is more reliable and accurate, side
Just the timely decision of air conditioner carries out stoppage protection, ensures the service life of compressor.Meanwhile not increasing unnecessary hardware additionally
Equipment, effectively control cost.
In alternative embodiments, it assesses whether to increase the overload protection recorded according to the freshly harvested assessment temperature difference
The step of secondary numerical value include: after judging the specified duration the freshly harvested assessment temperature difference whether meet preset condition；If
The assessment temperature difference meets the preset condition, then increases the overload protection time numerical value of record；If the assessment temperature difference is not
Meet the preset condition, does not then increase the overload protection time numerical value of record.By after the inner blower that stops, again depending on
The assessment temperature difference is judged, the erroneous judgement being likely to occur when anticipation is eliminated.
In alternative embodiments, described to judge whether the freshly harvested assessment temperature difference is full after the specified duration
The step of sufficient preset condition includes: using the freshly harvested assessment temperature difference as target temperature difference；It is corresponding to obtain the target temperature difference
The comparison temperature difference；Wherein, the relatively temperature difference is according to acquisition time earlier than the temperature that the assessment temperature difference of the target temperature difference determines
Difference；If difference of the target temperature difference compared with described between the temperature difference is not higher than preset first temperature threshold, institute is determined
Commentary estimates the temperature difference and meets preset condition.
In alternative embodiments, the air-conditioning overload protection judgment method further include: if after the specified duration
The freshly harvested assessment temperature difference is unsatisfactory for preset condition, controls the inner blower and resumes operation.Erroneous judgement is avoided to cause unnecessary
Shutdown, improve user experience.
In alternative embodiments, described according to the assessment temperature difference, whether the compressor for prejudging air conditioner started
The step of carrying protection includes: in each time interval, using the freshly harvested assessment temperature difference as target temperature difference；If institute
Target temperature difference is stated no more than preset second temperature threshold value, obtains the corresponding relatively temperature difference of the target temperature difference；Wherein, the ratio
It is according to acquisition time earlier than the temperature difference that the assessment temperature difference of the target temperature difference determines compared with the temperature difference；According to it is described relatively the temperature difference with
Whether the target temperature difference, the compressor for prejudging air conditioner start overload protection.To realize preliminary overload protection and sentence
It is fixed.
In alternative embodiments, according to the relatively temperature difference and the target temperature difference, the compressor of air conditioner is prejudged
The step of whether starting overload protection includes: when the difference relatively between the temperature difference and the target temperature difference is not less than preset
When third temperature threshold, the compressor for prejudging air conditioner has been turned on overload protection.
In alternative embodiments, after increasing the overload protection time numerical value of record, the air-conditioning overload is protected
Protect judgment method further include: if the overload protection time numerical value is less than the preset threshold, according to new collected institute's commentary
Estimating the temperature difference, it is determined whether to enable the inner blowers.
In alternative embodiments, it is determined whether to enable the interior wind for the new collected assessment temperature difference of the foundation
The step of machine includes: using the freshly harvested assessment temperature difference as target temperature difference；Obtain the corresponding comparison temperature of the target temperature difference
Difference；If difference of the target temperature difference compared between the temperature difference is not less than four temperature thresholds, controls the inner blower and restore
Operation.
In alternative embodiments, further comprise the steps of: will be collected described for the air-conditioning overload protection judgment method
The assessment temperature difference is successively stored according to acquisition time sequence, to generate temperature difference sequence；In each time interval, foundation is newly adopted
The assessment temperature difference of collection updates the temperature difference sequence；Described the step of obtaining the target temperature difference corresponding relatively temperature difference, wraps
It includes: the first assessment temperature difference will be listed in the updated temperature difference sequence as the relatively temperature difference.
In alternative embodiments, described the step of updating the temperature difference sequence according to the freshly harvested assessment temperature difference
It include: to add the freshly harvested assessment temperature difference when the temperature difference number in the temperature difference sequence reaches preset number threshold value
Enter the temperature difference sequence, and deletes the assessment temperature difference for being listed in the temperature difference sequence first place.
In alternative embodiments, the air-conditioning overload protection judgment method further include: when the compressor is normally transported
When row duration is more than preset duration, the overload protection time numerical value is reset.
Second aspect, the embodiment of the present invention provide a kind of air-conditioning overload protection judgment means, and the air-conditioning overload protection is sentenced
Disconnected device includes: anticipation module, for according to the assessment temperature difference, whether the compressor for prejudging air conditioner to start overload protection；Wherein,
The assessment temperature difference is the temperature difference between the room temperature and indoor coil pipe acquired according to the preset time interval；Control
Module, if having been turned on overload protection for prejudging the compressor, the inner blower for controlling the air conditioner is out of service；Assessment
Module, for assessing whether to increase according to the freshly harvested assessment temperature difference after the inner blower specified duration out of service
The overload protection time numerical value of record, to control the air conditioner when the overload protection time numerical value is more than preset threshold
Outdoor unit is shut down.
The third aspect, the embodiment of the present invention provide a kind of air conditioner, including processor, and machine can be performed in the processor can
It executes instruction to realize any method of aforementioned embodiments.
Detailed description of the invention
Fig. 1 is the schematic diagram of air conditioner provided in an embodiment of the present invention；
Fig. 2 is a kind of one of step flow chart of air-conditioning overload protection judgment method provided in an embodiment of the present invention；
Fig. 3 is the two of a kind of step flow chart of air-conditioning overload protection judgment method provided in an embodiment of the present invention；
Fig. 4 is the sub-step flow chart of step S102 in Fig. 2；
Fig. 5 is the three of a kind of step flow chart of air-conditioning overload protection judgment method provided in an embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of air-conditioning overload protection judgment means provided in an embodiment of the present invention.
Description of symbols:
100- air conditioner；10- control unit；20- compressor；30- inner blower；40- acquisition unit；300- air-conditioning overload is protected
Protect judgment means；301- obtains module；302- prejudges module；303- control module；304- evaluation module.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Referring to FIG. 1, Fig. 1 shows a kind of schematic diagram of air conditioner 100 provided in an embodiment of the present invention.Above-mentioned air conditioner
100 include control unit 10, compressor 20, inner blower 30 and acquisition unit 40.Above-mentioned control unit 10 is respectively used to compressor
20, inner blower 30 and acquisition unit 40 are electrically connected.
Optionally, above-mentioned control unit 10 includes processor and memory, and the memory is stored with can be by the place
The machine-executable instruction that device executes is managed, the machine-executable instruction can be performed to control compressor 20, interior in the processor
Blower 30 and acquisition unit 40 realize air-conditioning overload protection judgment method provided in an embodiment of the present invention.In other embodiments,
Memory can also be the device independently of control unit 10, by being electrically connected with control unit 10, execute convenient for processor
The machine-executable instruction on memory is stored in control compressor 20, inner blower 30 and acquisition unit 40 and realize that the present invention is real
The air-conditioning overload protection judgment method of example offer is provided.
Above-mentioned acquisition unit 40 can be temperature sensor.Above-mentioned temperature sensor includes the biography for acquiring room temperature
Sensor and sensor for acquiring indoor coil pipe.It is to be appreciated that above-mentioned temperature sensor can be multiplexed air conditioner 100
Original sensor.
Above-mentioned compressor 20 carries protector, causes 20 coil temperature of compressor to be more than in 100 heavy-duty service of air conditioner
When normal range (NR), above-mentioned protector disconnects automatically, makes 20 operation suspension of compressor.Restore normal in 20 coil temperature of compressor
When, above-mentioned protector automatic pick makes compressor 20 resume operation.To avoid the operation of 100 continued high load of air conditioner from causing
Compressor 20 is burnt out.Certainly, as previously shown, the number for the overload protection that protector can be realized is limited, in particular, bad working environments
Under, protector repeatedly and the disconnection of high frequency, closure, be bound to cause the failure of protector.
Referring to FIG. 2, Fig. 2 shows the processes of the air-conditioning overload protection judgment method applied to above-mentioned control unit 10
Figure.As shown in Fig. 2, above-mentioned air-conditioning overload protection judgment method the following steps are included:
Step S101 obtains the room temperature and indoor coil pipe acquired according to the preset time interval, every to obtain
The corresponding assessment temperature difference of a time interval.
In embodiments of the present invention, the real time temperature for the interior space that above-mentioned room temperature is serviced by air conditioner 100.On
Stating indoor coil pipe can be the coil temperature of indoor evaporator.Optionally, control unit 10 can be between each time
Every reception is by the collected room temperature of acquisition unit 40 and indoor coil pipe.And according to room temperature and indoor coil temperature
Degree obtains the corresponding assessment temperature difference of the time interval.For example, can be the room temperature that receives each time interval and
Difference between indoor coil pipe, as the collected assessment temperature difference of the time interval.It is to be appreciated that above-mentioned steps S101
It will be periodically carried out according to above-mentioned time interval.For example, control unit 10 receives the collected room of acquisition unit 40 every 5s
Interior temperature and indoor coil pipe, and acquired the difference between the room temperature received and indoor coil pipe as epicycle
The assessment temperature difference arrived.It is to be appreciated that control unit 10 starts to obtain each time interval and adopts after air conditioner 100 starts and runs
The room temperature and indoor coil pipe of collection.In some embodiments, after machine operation setting duration to be compressed, process is entered step
S102 starts to monitor whether compressor occurs overload protection and chaser.
The above-mentioned acquisition assessment temperature difference is to be acquired in real time, as the growth data volume of time also gradually increases.In order to
It is convenient that the collected assessment temperature difference is managed, mitigate storage pressure and reduce the performance requirement to memory, in some realities
Apply in example, as shown in figure 3, on the basis of Fig. 2, the air-conditioning overload protection judgment method can with comprising steps of
Step S201 stores the collected assessment temperature difference, successively according to acquisition time sequence to generate temperature difference sequence.
In embodiments of the present invention, a storehouse is selected in the memory of control unit 10, the storehouse is with first in first out
Principle stores the value of the collected assessment temperature difference in it, to constitute temperature difference sequence.It is to be appreciated that in the temperature difference sequence,
It is arranged in the corresponding acquisition time of the assessment temperature difference in forefront relatively early, the corresponding acquisition time phase of the assessment temperature difference after being arranged in
To rearward.
Step S202 updates temperature difference sequence according to the freshly harvested assessment temperature difference in each time interval.
In embodiments of the present invention, the mode of above-mentioned update temperature difference sequence may is that and newly obtain in each time interval
One assessment temperature difference, is just added into temperature difference sequence.If the temperature difference number in temperature difference sequence reaches preset number threshold value
When, the temperature difference sequence is added in the freshly harvested assessment temperature difference, and delete the assessment temperature for being listed in the temperature difference sequence first place
Difference.For example, the number threshold value of temperature difference sequence is 12 and has stored 12 assessment temperature difference, it is denoted as Δ T1, Δ T2 ... Δ respectively
T12.When collecting the 13rd assessment temperature difference, original Δ T1 is removed from temperature difference sequence, using original Δ T2 as more
Δ T1 after new, using original Δ T3 as updated Δ T2, and so on, it finally will new collected assessment temperature difference conduct
ΔT12。
Step S102, according to the assessment temperature difference, whether the compressor 20 of anticipation air conditioner 100 starts overload protection.
In embodiments of the present invention, an assessment temperature difference is newly collected in each time interval.One is often obtained to comment
Estimate the temperature difference, judges whether compressor 20 has been turned on overload protection according to the assessment temperature difference.It is, passing through step S101 and step
The cooperation of rapid S102 may be implemented in real time whether to be monitored into overload protection air conditioner 100.Obviously, this process
It can be realized by being multiplexed the temperature sensor of 100 script of air conditioner, without additionally increasing the hardware cost of air conditioner 100.
As an implementation, whether the above-mentioned compressor 20 according to assessment temperature difference anticipation air conditioner 100 starts overload
The judgment mode of protection include following one or between combination:
1) judge to assess whether the temperature difference is no more than limit value.For example, judging to assess whether the temperature difference is no more than preset second temperature
Spend threshold value.As reference, the value range of second temperature threshold value can be 0 DEG C~4 DEG C.
2) judge to assess whether the temperature difference becomes smaller compared to the assessment difference variation acquired before.For example, examining collected
Whether the assessment temperature difference gradually becomes smaller.
A kind of mode for realizing above-mentioned steps S102 is set forth below.Specifically, if Fig. 4, above-mentioned steps S102 include following
Sub-step:
Sub-step S1021, in each time interval, using the freshly harvested assessment temperature difference as target temperature difference.
In embodiments of the present invention, in each time interval, the new collected assessment temperature difference of current time interval is made
For target temperature difference.
Sub-step S1022 obtains the corresponding comparison of target temperature difference if target temperature difference is no more than preset second temperature threshold value
The temperature difference.
In embodiments of the present invention, the above-mentioned relatively temperature difference is the assessment temperature difference of the acquisition time earlier than target temperature difference.I.e., it is possible to
It is using the assessment temperature difference before being arranged in target temperature difference in temperature difference sequence as comparing the temperature difference.For example, will be according to target temperature difference more
The first assessment temperature difference is listed in temperature difference sequence after new as the corresponding relatively temperature difference.
In other embodiments, it can also be the mean value between other temperature difference in temperature difference sequence in addition to target temperature difference
As comparing the temperature difference.
Sub-step S1023, according to the temperature difference and target temperature difference is compared, whether the compressor 20 of anticipation air conditioner 100 started
Carry protection.
It is to be appreciated that by comparing the available assessment temperature difference of difference between the temperature difference and target temperature difference compared to before
Variation, if assessment the temperature difference compared to gradually becoming smaller before, compressor 20 can be prejudged and have been turned on overload protection.As a kind of reality
Mode is applied, when the difference relatively between the temperature difference and target temperature difference is not less than preset third temperature threshold, prejudges compressor 20
Overload protection is had been turned on, process enters step S103.Otherwise, process returns to sub-step S1021.As a kind of reference, above-mentioned
The value range of three temperature thresholds can be 2 DEG C~5 DEG C.
For example, the Δ T12 in updated temperature difference sequence is target temperature difference, second temperature threshold value is 1 DEG C, third temperature threshold
Value is 2 DEG C, after detecting Δ T12≤1 DEG C, determines that the Δ T1 in updated temperature difference sequence is to compare the temperature difference, then working as Δ
When Δ T12 >=2 DEG C T1-, anticipation compressor 20 has been turned on overload protection, and process enters step S103.
Step S103, if anticipation compressor 20 has been turned on overload protection, the inner blower 30 for controlling air conditioner 100 stops fortune
Row.
In embodiments of the present invention, in order to determine that it is whether accurate that compressor 20 has been turned on overload protection this anticipation result,
Control unit 10 sends instruction out of service to inner blower 30, and the inner blower for receiving instruction out of service 30 is made to stop working.
Step S104 is commented after the inner blower 30 specified duration out of service according to the freshly harvested assessment temperature difference
The overload protection time numerical value for whether increasing record estimated.
In embodiments of the present invention, above-mentioned overload protection time numerical value is that the compressor 20 recorded in control unit 10 has occurred
The number of overload protection.It is further to determine according to the freshly harvested assessment temperature difference after the specified duration out of service of inner blower 30
Whether compressor 20 has been started up overload protection, and according to the overload protection number for determining to record in result adjustment control unit 10
Value.Above-mentioned specified duration can be by the preparatory equipment of user, for example, can be 60 seconds.
As an implementation, above-mentioned steps S104, which can be, includes:
1) whether the freshly harvested assessment temperature difference meets preset condition after judging the specified duration.
In embodiments of the present invention, above-mentioned preset condition can be for judging to assess the temperature difference whether after interior machine is becalmed only
Whether little condition is changed.
Optionally, above-mentioned that the step of whether freshly harvested assessment temperature difference meets preset condition after the specified duration judged
It include: using the freshly harvested assessment temperature difference as target temperature difference.Obtain the corresponding relatively temperature difference of target temperature difference；Wherein, compare
The temperature difference is according to acquisition time earlier than the temperature difference that the assessment temperature difference of the target temperature difference determines.It is to be appreciated that obtaining mesh herein
The principle for marking the comparison temperature difference of the temperature difference is identical with sub-step S1022, and details are not described herein.If target temperature difference temperature difference compared with described
Between difference be not higher than preset first temperature threshold, then determine assess the temperature difference meet preset condition.As reference, above-mentioned
The value range of one temperature threshold can be 0 DEG C~2 DEG C.
If 2) the assessment temperature difference meets above-mentioned preset condition, increase overload protection time numerical value.For example, inner blower 30 stops
After running specified duration, new collected assessment temperature meets the preset condition, then overload protection time numerical value adds one.
If 3) the assessment temperature difference is unsatisfactory for above-mentioned preset condition, the overload protection time numerical value of record is not increased.
It is to be appreciated that it is out of service first with step S103 control inner blower 30, further sentence by step S104
It is disconnected whether overload protection really occur.The erroneous judgement of the overload protection as caused by inner blower 30 can be discharged, improve overload protection
The accuracy of judgement.
Understandably, if it is determined that the overload protection prejudged out is the erroneous judgement as caused by inner blower 30, then not changing
Become the overload protection time numerical value recorded in control unit 10.Further, air-conditioning overload protection provided in an embodiment of the present invention is sentenced
Disconnected method further include: if the freshly harvested assessment temperature difference is unsatisfactory for preset condition after specified duration, it is extensive to control the inner blower 30
Multiple operation makes air conditioner 100 restore to operate normally.
In addition, the failure of protector is mainly influenced maximum by chaser is frequently overloaded in the short time.In order to distinguish air conditioner
Whether 100 be frequent Tiaotiao device.Air-conditioning overload protection judgment method provided in an embodiment of the present invention can be comprising steps of work as
When the compressor 20 operates normally duration more than preset duration, overload protection time numerical value is reset.For example, preset duration is 1
Hour, then compressor 20 continues not occur overload protection in 1 hour, then the overload protection of record time numerical value is reset.
In some embodiments, as shown in figure 5, on the basis of air-conditioning overload protection judgment method shown in Fig. 2, this hair
The air-conditioning overload protection judgment method that bright embodiment provides further include:
Step S105, when overload protection time numerical value is more than preset threshold, the outdoor unit of control air conditioner 100 is shut down.
In our embodiment, when step S104 determines the overload protection number for needing to increase record, process enters step
Rapid S105.When step S104 determines the overload protection number for not needing to increase record, process returns to step S101.It is above-mentioned default
Threshold value can be determined according to the test data of different type of machines, for example can be 6.In the embodiment of the present invention, when the overload of record is protected
When protecting time numerical value more than preset threshold, determine that 20 overload protection failure of compressor, the outdoor unit of control air conditioner 100 are shut down.
At the same time it can also prompt user.At this point, until the shutdown of outdoor unit can continue to that air conditioner 100 is restarted.To,
When the protector of compressor 20 is likely to occur failure, effectively air conditioner 100 can be protected.
Since the overload protection time numerical value of record is by obtaining after determining repeatedly, therefore reliability and accuracy all compare
It is high.Therefore, above-mentioned steps S105 can influence the usage experience of user to avoid unnecessary shutdown.
Step S106, when overload protection time numerical value is less than preset threshold, according to the freshly harvested assessment temperature difference, judgement is
No control inner blower 30 resumes operation.
In embodiments of the present invention, it can be using the freshly harvested assessment temperature difference as target temperature difference, and obtain target temperature difference
The comparison temperature difference.When difference of the target temperature difference compared between the temperature difference is not less than four temperature thresholds, compressor at this time is judged
Overload protection has been released, has restored to operate normally, therefore, controls the inner blower 30 and resume operation, process returns to step S101.
As reference, the value range of above-mentioned 4th temperature threshold is 2 DEG C~5 DEG C.
In order to execute the corresponding steps in above-described embodiment and each possible mode, a kind of air-conditioning overload guarantor is given below
The implementation of judgment means 300 is protected, optionally, which can use the device of air conditioner 100
Part structure.Further, referring to Fig. 6, Fig. 6 is a kind of air-conditioning overload protection judgment means 300 provided in an embodiment of the present invention
Functional block diagram.It should be noted that air-conditioning overload protection judgment means 300, basic principle provided by the present embodiment
And the technical effect generated is identical with above-described embodiment, to briefly describe, the present embodiment part does not refer to place, can refer to above-mentioned
Embodiment in corresponding contents.The air-conditioning overload protection judgment means 300 include: to obtain module 301, anticipation module 302, control
Module 303 and evaluation module 304.
Module 301 is obtained, for obtaining the room temperature and indoor coil pipe that acquire according to the preset time interval, with
Obtain the corresponding assessment temperature difference of each time interval.
In embodiments of the present invention, above-mentioned steps S101 can be executed by above-mentioned acquisition module 301.
Above-mentioned anticipation module 302, for whether starting overload according to the compressor 20 of the assessment temperature difference, anticipation air conditioner 100
Protection；Wherein, the assessment temperature difference is between the room temperature and indoor coil pipe acquired according to the preset time interval
Temperature difference.
In embodiments of the present invention, above-mentioned steps S102 can be executed by above-mentioned anticipation module 302.
Above-mentioned control module 303 controls the air conditioner if having been turned on overload protection for prejudging the compressor 20
100 inner blower 30 is out of service in specified duration.
In embodiments of the present invention, above-mentioned steps S103 can be executed by above-mentioned control module 303.
Above-mentioned evaluation module 304 is used for after the inner blower 30 specified duration out of service, according to freshly harvested
The assessment temperature difference assesses whether to increase overload protection time numerical value, to be more than preset threshold in the overload protection time numerical value
When, the outdoor unit for controlling the air conditioner 100 is shut down.
In embodiments of the present invention, above-mentioned steps S104 can be executed by above-mentioned evaluation module 304.
In conclusion the embodiment of the invention provides a kind of air-conditioning overload protection judgment method, device and air conditioners.Its
In, above-mentioned air-conditioning overload protection judgment method includes: that whether the compressor for prejudging air conditioner, which starts to overload, is protected according to the assessment temperature difference
Shield；Wherein, the assessment temperature difference is the temperature between the room temperature and indoor coil pipe acquired according to the preset time interval
Difference；If prejudging the compressor has been turned on overload protection, the inner blower for controlling the air conditioner stops in specified duration
Operation；After the inner blower specified duration out of service, assess whether to increase according to the freshly harvested assessment temperature difference
The overload protection time numerical value of record, to control the air conditioner when the overload protection time numerical value is more than preset threshold
Outdoor unit is shut down.Accurate, reliable overload of compressor number is obtained by dual judgement.So as to help air conditioner timely
Whether decision is shut down, and ensures the service life of compressor.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (13)
1. a kind of air-conditioning overload protection judgment method, which is characterized in that the air-conditioning overload protection judgment method includes:
According to the assessment temperature difference, whether the compressor (20) of anticipation air conditioner (100) starts overload protection；Wherein, the assessment temperature
Difference includes the temperature difference between the room temperature and indoor coil pipe acquired according to the preset time interval；
If prejudging the compressor (20) has been turned on overload protection, the inner blower (30) for controlling the air conditioner (100) stops
Operation；
After the inner blower (30) specified duration out of service, assess whether to increase note according to the freshly harvested assessment temperature difference
The overload protection time numerical value of record, to control the air conditioner (100) when the overload protection time numerical value is more than preset threshold
Outdoor unit shut down.
2. air-conditioning overload protection judgment method according to claim 1, which is characterized in that according to the freshly harvested assessment
The temperature difference assesses whether that the step of increasing the overload protection time numerical value of record includes:
Whether the freshly harvested assessment temperature difference meets preset condition after judging the specified duration；
If the assessment temperature difference meets the preset condition, increase the overload protection time numerical value of record；
If the assessment temperature difference is unsatisfactory for the preset condition, the overload protection time numerical value of record is not increased.
3. air-conditioning overload protection judgment method according to claim 2, which is characterized in that the judgement specified duration
The step of whether the assessment temperature difference freshly harvested later meets preset condition include:
Using the freshly harvested assessment temperature difference as target temperature difference；
Obtain the corresponding relatively temperature difference of the target temperature difference；Wherein, the relatively temperature difference is according to acquisition time earlier than the mesh
Mark the temperature difference that the assessment temperature difference of the temperature difference determines；
If difference of the target temperature difference compared with described between the temperature difference be not higher than preset first temperature threshold, determine described in
The assessment temperature difference meets preset condition.
4. air-conditioning overload protection judgment method according to claim 2, which is characterized in that the air-conditioning overload protection judgement
Method further include:
If the freshly harvested assessment temperature difference is unsatisfactory for preset condition after the specified duration, it is extensive to control the inner blower (30)
Multiple operation.
5. air-conditioning overload protection judgment method according to claim 1, which is characterized in that described according to the assessment temperature
Compressor (20) the step of whether starting overload protection of difference, anticipation air conditioner (100) includes:
In each time interval, using the freshly harvested assessment temperature difference as target temperature difference；
If the target temperature difference is no more than preset second temperature threshold value, the corresponding relatively temperature difference of the target temperature difference is obtained；Its
In, the relatively temperature difference is according to acquisition time earlier than the temperature difference that the assessment temperature difference of the target temperature difference determines；
According to the relatively temperature difference and the target temperature difference, whether the compressor (20) of anticipation air conditioner (100), which starts overload, is protected
Shield.
6. air-conditioning overload protection judgment method according to claim 5, which is characterized in that according to the relatively temperature difference and the institute
State target temperature difference, the step of whether compressor (20) of anticipation air conditioner (100) starts overload protection includes:
When the difference relatively between the temperature difference and the target temperature difference is not less than preset third temperature threshold, air-conditioning is prejudged
The compressor (20) of device (100) has been turned on overload protection.
7. air-conditioning overload protection judgment method according to claim 1, which is characterized in that in the overload for increasing record
After protecting time numerical value, the air-conditioning overload protection judgment method further include:
If the overload protection time numerical value is less than the preset threshold, judge whether according to the new collected assessment temperature difference
Open the inner blower (30).
8. air-conditioning overload protection judgment method according to claim 7, which is characterized in that the new collected institute of the foundation
Commentary, which estimates the temperature difference it is determined whether to enable the step of inner blower (30), to include:
Using the freshly harvested assessment temperature difference as target temperature difference；
Obtain the corresponding relatively temperature difference of the target temperature difference；
If difference of the target temperature difference compared between the temperature difference is not less than four temperature thresholds, the inner blower (30) are controlled
It resumes operation.
9. according to air-conditioning overload protection judgment method described in claim 3,5 or 8, which is characterized in that
The air-conditioning overload protection judgment method is further comprised the steps of: the collected assessment temperature difference according to acquisition time sequence
It successively stores, to generate temperature difference sequence；In each time interval, according to described in the freshly harvested assessment temperature difference update
Temperature difference sequence；
Described the step of obtaining the target temperature difference corresponding relatively temperature difference includes: that will be listed in the updated temperature difference sequence
The first assessment temperature difference is as the relatively temperature difference.
10. air-conditioning overload protection judgment method according to claim 9, which is characterized in that described according to freshly harvested institute
Commentary estimate the temperature difference update the temperature difference sequence the step of include:
When the temperature difference number in the temperature difference sequence reaches preset number threshold value, the freshly harvested assessment temperature difference is added
The temperature difference sequence, and delete the assessment temperature difference for being listed in the temperature difference sequence first place.
11. air-conditioning overload protection judgment method according to claim 1, which is characterized in that the air-conditioning overload protection is sentenced
Disconnected method further include:
When the compressor (20), which operate normally duration, is more than preset duration, the overload protection time numerical value is reset.
12. a kind of air-conditioning overload protection judgment means, which is characterized in that the air-conditioning overload protection judgment means (300) include:
It prejudges module (302), for according to the assessment temperature difference, whether the compressor (20) of anticipation air conditioner (100), which starts overload, to be protected
Shield；Wherein, the assessment temperature difference is the temperature between the room temperature and indoor coil pipe acquired according to the preset time interval
Difference；
Control module (303) controls the air conditioner if having been turned on overload protection for prejudging the compressor (20)
(100) inner blower (30) is out of service；
Evaluation module (304) is used for after the inner blower (30) specified duration out of service, according to the freshly harvested assessment
The temperature difference assesses whether to increase the overload protection time numerical value of record, so as to when the overload protection time numerical value is more than preset threshold,
The outdoor unit for controlling the air conditioner (100) is shut down.
13. a kind of air conditioner, which is characterized in that including processor, machine-executable instruction is can be performed to realize in the processor
Any method of claim 1-11.
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