CN109974194A - Air conditioner and its high-temperature protection method and device - Google Patents
Air conditioner and its high-temperature protection method and device Download PDFInfo
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- CN109974194A CN109974194A CN201910251934.5A CN201910251934A CN109974194A CN 109974194 A CN109974194 A CN 109974194A CN 201910251934 A CN201910251934 A CN 201910251934A CN 109974194 A CN109974194 A CN 109974194A
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- air conditioner
- target
- running frequency
- compressor
- aperture
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Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
This application discloses a kind of air conditioner and its high-temperature protection method and devices, the described method comprises the following steps: obtaining the present input voltage of air conditioner, identify that air conditioner enters subnormal voltage operation state according to present input voltage；Obtain the currently practical revolving speed of outdoor fan in air conditioner；Obtain in air conditioner that the minimum of compressor can running frequency, and according to present input voltage and currently practical revolving speed, the highest for obtaining compressor can running frequency, limit compressor running frequency be less than or equal to target highest can running frequency, and be more than or equal to target is minimum can running frequency；Detection compressor current operation frequency be reduced to target it is minimum can running frequency, control increase air conditioner in restricting element aperture.The high-temperature protection method of the application is limited by the aperture of running frequency and restricting element to compressor, can be reduced system loading when input voltage is lower, be reduced condensing pressure, guarantee the reliability service of system.
Description
Technical field
This application involves air-conditioning technical field, in particular to a kind of air conditioner and its high-temperature protection method and device.
Background technique
Currently, transducer air conditioning minimum operation voltage can achieve 150V, the wind speed of outdoor fan is relatively high, condensation temperature
Relatively low, outdoor heat exchanger condensing pressure is relatively low, and system reliability is high.
In the related technology, transducer air conditioning minimum operation voltage can reach 40V, even lower, the lower outdoor fan of voltage
Revolving speed is lower, and under identical frequency, condenser temperature and pressure can be sharply increased, can beyond system can operating pressure range, influence
Air conditioner reliability of operation.
Summary of the invention
The embodiment of the present application is by providing a kind of air conditioner and its high-temperature protection method and device, the high temperature protection of the application
Method, can be according to the currently practical revolving speed of the present input voltage of air conditioner and outdoor fan to the running frequency of compressor
It is limited with the aperture of restricting element, so as to reduce system loading when input voltage is lower, reduces condensing pressure,
The reliability service of guarantee system.
The embodiment of the present application provides a kind of high-temperature protection method of air conditioner, comprising the following steps: obtains air conditioner
Present input voltage identifies that the air conditioner enters subnormal voltage operation state according to the present input voltage；Obtain the sky
Adjust the currently practical revolving speed of outdoor fan in device；Obtain compressor in the air conditioner it is minimum can running frequency, and according to
The present input voltage and the currently practical revolving speed, obtain the compressor highest can running frequency, limit the pressure
The running frequency of contracting machine be less than or equal to the target highest can running frequency, and be more than or equal to the target most
It is low can running frequency；Detect the compressor current operation frequency be reduced to the target it is minimum can running frequency, control increase
The aperture of restricting element in the big air conditioner.
In addition, the high-temperature protection method of the air conditioner proposed according to the above embodiments of the present application can also have following add
Technical characteristic:
In one embodiment of the application, the control increases the aperture of restricting element in the air conditioner, comprising: root
According to the present input voltage and the currently practical revolving speed, the target minimum aperture of restricting element in the air conditioner is updated；
Control increases the aperture of the restricting element to more than equal to the target minimum aperture.
In one embodiment of the application, the highest for obtaining compressor in the air conditioner can running frequency it
Afterwards, further includes: the current state parameter for obtaining condenser in the air conditioner, according to the current state parameter of the condenser
To the target highest can running frequency be updated；The target minimum aperture for updating restricting element in the air conditioner
Later, further includes: the target minimum aperture is updated again according to the current state parameter of the condenser.
In one embodiment of the application, the current state parameter of the condenser includes the condensation temperature of the condenser
Degree and/or condensing pressure.
In one embodiment of the application, the control increases the aperture of the restricting element, comprising: is worked as according to described
The current state parameter and the updated target highest of preceding input voltage, the currently practical revolving speed, the condenser
Can running frequency, reacquire the target minimum aperture of the restricting element, the aperture for controlling the restricting element be greater than or
Equal to the target minimum aperture of the restricting element of reacquisition.
In one embodiment of the application, above-mentioned method, further includes: the highest of the compressor can running frequency point
Revolving speed not with the input voltage of the air conditioner and the outdoor fan is positively correlated.
In one embodiment of the application, above-mentioned method, further includes: the highest of the compressor can running frequency with
The state parameter of the condenser is negatively correlated.
In one embodiment of the application, above-mentioned method, further includes: the target minimum aperture of the restricting element point
Revolving speed not with the input voltage of the air conditioner and the outdoor fan is negatively correlated.
In one embodiment of the application, above-mentioned method, further includes: the target minimum aperture of the restricting element with
The state parameter of the condenser is directly proportional.
The embodiment of the present application provides a kind of high temperature protection device of air conditioner, comprising: identification module, for obtaining air-conditioning
The present input voltage of device identifies that the air conditioner enters subnormal voltage operation state according to the present input voltage；Frequency limit
Molding block, target for obtaining compressor in the air conditioner it is minimum can running frequency, and according to the current input electricity
Pressure, obtain compressor in the air conditioner target highest can running frequency, the running frequency for limiting the compressor be less than or
Person be equal to the target highest can running frequency, and be more than or equal to the target is minimum can running frequency；Aperture regulation
Module, the current operation frequency for detecting the compressor be reduced to the target it is minimum can running frequency, control increase institute
State the aperture of restricting element in air conditioner.
The embodiment of the present application provides a kind of air conditioner, comprising: the high temperature protection device of above-mentioned air conditioner.
The embodiment of the present application provides a kind of electronic equipment, including memory, processor；Wherein, the processor passes through
The executable program code that stores in the memory is read to run program corresponding with the executable program code, with
For realizing the high-temperature protection method of above-mentioned air conditioner.
The embodiment of the present application provides a kind of computer readable storage medium, stores on the computer readable storage medium
There is computer program, which realizes the high-temperature protection method of above-mentioned air conditioner when being executed by processor.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The application can be according to the present input voltage of air conditioner and the actual speed of outdoor fan, preferentially to compressor
Running frequency carries out reduction control, when the running frequency of compressor reach minimum target can running frequency, and cannot meet the requirements
When, then the aperture of restricting element is carried out tuning up control, so as to reduce system loading when input voltage is lower, reduce
Condensing pressure guarantees the reliability service of system.
Detailed description of the invention
Fig. 1 is the flow chart of the high-temperature protection method of the air conditioner of the embodiment of the present application one；
Fig. 2 is the system construction drawing of the air conditioner of the embodiment of the present application one；
Fig. 3 is the block diagram of the high temperature protection device of the air conditioner of the embodiment of the present application two；And
The block diagram of the air conditioner of Fig. 4 the embodiment of the present application three.
Specific embodiment
It can reach 40V to solve transducer air conditioning minimum operation voltage in the prior art, even lower, the lower room of voltage
Outer rotation speed of fan is lower, and under identical frequency, condenser temperature and pressure can be sharply increased, beyond system can operating pressure range,
The technical issues of influencing air conditioner reliability of operation, present applicant proposes a kind of high-temperature protection method of air conditioner, Neng Gougen
According to the present input voltage of air conditioner and the currently practical revolving speed of outdoor fan to the running frequency of compressor and restricting element
Aperture is limited, and so as to when input voltage is lower, is reduced system loading, is reduced condensing pressure, and guarantee system can
By operation.
In order to better understand the above technical scheme, the exemplary reality of the application is more fully described below with reference to accompanying drawings
Apply example.Although showing the exemplary embodiment of the application in attached drawing, it being understood, however, that may be realized in various forms this
Apply and should not be limited by the embodiments set forth herein.It is to be able to thoroughly understand on the contrary, providing these embodiments
The application, and scope of the present application can be fully disclosed to those skilled in the art.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Embodiment one
Fig. 1 is the flow chart of the high-temperature protection method of the air conditioner of the embodiment of the present application one.
In one embodiment of the application, as shown in Fig. 2, air conditioner can include: input power, electric-control system, compression
Machine, outdoor heat exchanger, indoor heat exchanger, outdoor fan, indoor fan and restricting element.Wherein, outdoor fan corresponds to outdoor and changes
Hot device setting, indoor fan correspond to indoor heat exchanger setting, and one end of compressor is connected with one end of outdoor heat exchanger, outdoor
The other end of heat exchanger is connected with one end of restricting element, and the other end of restricting element is connected with one end of indoor heat exchanger, room
The other end of interior heat exchanger is connected with the other end of compressor, electric-control system respectively with input power, indoor fan, outdoor wind
Machine is connected with compressor.
When air conditioner is run in a chiller mode, the high pressure gaseous refrigerant come out from compressor is introduced into outdoor and changes
Hot device exchanges heat, then by restricting element carry out reducing pressure by regulating flow after, enter the room heat exchanger, by indoor heat exchanger into
After row heat exchange, compressor is returned to.
When air conditioner is run with heating mode, the high pressure gaseous refrigerant come out from compressor is introduced into interior and changes
Hot device exchanges heat, then after restricting element carries out reducing pressure by regulating flow, into outdoor heat exchanger, by outdoor heat exchanger into
After row heat exchange, compressor is returned to.
As shown in Figure 1, the high-temperature protection method of the air conditioner of the embodiment of the present application, it may include following steps:
S1 obtains the present input voltage of air conditioner, identifies that air conditioner enters subnormal voltage operation according to present input voltage
State.
S2 obtains the currently practical revolving speed of outdoor fan in air conditioner.
S3, obtain compressor in air conditioner it is minimum can running frequency, and according to present input voltage and currently practical
Revolving speed, obtain air conditioner in compressor highest can running frequency, limit compressor running frequency be less than or equal to target
Highest can running frequency, and be more than or equal to target is minimum can running frequency.
Wherein, the target highest of compressor can running frequency are as follows: air conditioner is reduced in outdoor fan revolving speed in order to prevent, cold
The serious problems of solidifying hypertonia, limit the frequency of compressor no more than maximum running frequency, guarantee that air conditioner is not in
The excessively high integrity problem of condensing pressure；The target of compressor is minimum can running frequency are as follows: the running frequency of compressor is in low frequency
When operation, frequency is lower, and pipeline vibration is bigger, in order to guarantee pipeline vibration in allowed limits, limits the minimum fortune of compressor
Line frequency cannot be below that target is minimum can running frequency.
S4, detect compressor current operation frequency be reduced to target it is minimum can running frequency, control increase air conditioner in
The aperture of restricting element.
Specifically, during air conditioner is run, the present input voltage of air conditioner is obtained, and to the current of air conditioner
Input voltage is judged, when the input voltage of air conditioner is less than preset voltage value (can be demarcated according to the actual situation),
Think that air conditioner enters subnormal voltage operation state, at this point, the revolving speed of outdoor fan reduces, under identical frequency, outdoor heat exchanger
Heat dissipation effect is poor, and condensation temperature and condensing pressure increase, and system loading increases, and in order to reduce the problem of system loading increases, leads to
It crosses the running frequency for reducing compressor and opens the aperture of big restricting element (i.e. the running frequency of compressor is with input voltage
Reduction will also reduce accordingly, and the target minimum aperture of restricting element will also increase accordingly with the reduction of input voltage), come
Condensing pressure is reduced, guarantees the reliability of system.
In one embodiment of the application, control increases the aperture of restricting element in air conditioner, comprising: according to current defeated
Enter voltage and currently practical revolving speed, updates the target minimum aperture of restricting element in air conditioner；Control increases opening for restricting element
It spends to more than equal to target minimum aperture.
Specifically, voltage-revolving speed-aperture table is previously stored in air conditioner, as shown in table 1, when air conditioner enter it is low
When voltage operating status, the currently practical revolving speed of outdoor fan is obtained, and calls pre-stored voltage-revolving speed-aperture table
Lattice, the target minimum aperture of corresponding restricting element can be obtained according to present input voltage and currently practical revolving speed, and control section
The aperture of fluid element is run with the aperture not less than target minimum aperture.Wherein, the target minimum aperture of restricting element and in real time
The input voltage of detection and the actual speed of outdoor fan are related, and the target of restricting element has been stored in advance in air conditioner most
One-to-one relationship between small guide vane and the actual speed of input voltage and outdoor fan.For example, in the mistake of air conditioner operation
Cheng Zhong, input voltage A, the actual speed of outdoor fan are A ', and corresponding target minimum aperture is A ", when input voltage drops
Down to B, when the actual speed of outdoor fan is B ', corresponding target minimum aperture is B ", that is, needs the target to restricting element
Minimum aperture is updated, wherein A > B, A ' > B ', A " < B ", that is to say, that voltage is bigger, and corresponding target minimum is opened
It spends smaller.
In one embodiment of the application, according to present input voltage and currently practical revolving speed, determine that target highest can
Running frequency.
Specifically, voltage-revolving speed-frequency-aperture table is previously stored in air conditioner, as shown in table 1, when air conditioner into
When entering subnormal voltage operation state, the currently practical revolving speed of outdoor fan is obtained, and calls pre-stored voltage-revolving speed-frequency
Rate-aperture table can be run according to the target highest that corresponding compressor can be obtained in present input voltage and currently practical revolving speed
Frequency, and control compressor with not higher than target highest can running frequency frequency operation.Meanwhile according to present input voltage
The target minimum aperture of corresponding restricting element can be obtained with currently practical revolving speed, and control the aperture of restricting element with not low
It is run in the aperture of target minimum aperture.
Table 1
Wherein, as shown in table 1, V1 < V2 < V3 < ... < Vn, the actual speed r1 < r2 < r3 of corresponding outdoor fan
The target highest of < ... < rn, corresponding compressor can running frequency f1 < f2 < f3 < ... < fn, the i.e. highest of compressor
Can actual speed of the running frequency respectively with the input voltage of air conditioner and outdoor fan be positively correlated.It is corresponding as f=f '
Restricting element target minimum aperture e1 > e2 > e3 > ... > en, that is, the target minimum aperture of restricting element respectively with sky
The actual speed of the input voltage and outdoor fan of adjusting device is negatively correlated.
It should be noted that when the running frequency of compressor be reduced to target it is minimum can running frequency when, to restricting element
Aperture tune up control, obtain the actual speed of present input voltage and outdoor fan, first to obtain corresponding section
The target minimum aperture of fluid element, and the aperture of restricting element is controlled not less than the target minimum aperture obtained.Wherein, it throttles
Actual speed of the target minimum aperture of element respectively with the input voltage of air conditioner and outdoor fan is negatively correlated, that is,
It says, the actual speed of input voltage and outdoor fan is bigger, and the target minimum aperture of restricting element is smaller.
It is understood that can also according to equation calculate obtain compressor target highest can running frequency, compression
The target highest of machine can the actual speed and input voltage of running frequency and outdoor fan be positively correlated, the target of restricting element
Minimum aperture is negatively correlated with outdoor fan actual speed and input voltage, so, it can be using equation according to input voltage
V and actual speed r, column formula calculate: maximum running frequency f=f (V, r), e=f (V, r, f).
In one embodiment of the application, the highest for obtaining compressor in air conditioner can be after running frequency, further includes:
The current state parameter for obtaining condenser in air conditioner can run frequency to target highest according to the current state parameter of condenser
Rate is updated；It updates in air conditioner after the target minimum aperture of restricting element, further includes: according to the current shape of condenser
State parameters on target minimum aperture is updated again.
In one embodiment of the application, the current state parameter of condenser may include condenser condensation temperature and/
Or condensing pressure.Wherein, condensation temperature indicates: condenser inner refrigerant under a certain pressure, the temperature of liquid is condensed by gas
Degree becomes condensation temperature；Condensing pressure indicates: the corresponding system pressure of condensation temperature.That is, condensation temperature and condensation pressure
Power is one-to-one relationship.
It should be noted that in the case where the current state parameter (condensing pressure or condensation temperature) of condenser is different,
The preferential running frequency for adjusting compressor, when the running frequency of compressor down to target it is minimum can running frequency when, restricting element
Just start to act.It is under the basis of running frequency for preferentially adjusting compressor, to throttling member in following embodiments
The aperture of part is adjusted.
In one embodiment of the application, according to the current state parameter of condenser, the amendment of at least one frequency is obtained
Coefficient, using at least one frequency correction factor to target highest can running frequency be updated.
Further, according to present input voltage and currently practical revolving speed, inquiry obtains the candidate of compressor in air conditioner
Highest can running frequency and it is candidate it is minimum can running frequency, according to candidate highest can running frequency, determine that target highest can be run
Frequency；According to the current state parameter of condenser to target highest can running frequency be updated, comprising: determine condenser
Target zone locating for current state parameter, choose again the corresponding candidate highest of target zone can running frequency as target
Highest can running frequency, for example, when the timing of input voltage one, as shown in table 2 and table 3.
Table 2
Wherein, the target highest of compressor can running frequency with the variation of outdoor condensing pressure P3, condensing pressure is higher,
Corresponding target highest can running frequency it is lower, to reduce system pressure, guarantee the reliability of system.For example, working as condensing pressure
P3 ∈ [4.2 ,+∞), the target highest of compressor can running frequency f1；When condensing pressure P3 ∈ [3.0,4.2) when, compressor
Target highest can running frequency f2；When condensing pressure P3 ∈ [2,3.0) when, the target highest of compressor can running frequency f3；
When condensing pressure P4 ∈ [0,1.5) when, compressor target highest can running frequency f4；Wherein f1 < f2 < f3 < f4 ..., condensation
Pressure is higher, the target highest of compressor can running frequency it is lower, i.e., the highest of compressor can running frequency and condenser shape
State parameter is negatively correlated.
Table 3
Wherein, the target highest of compressor can running frequency with the variation of condensation temperature T3, condensation temperature is higher, corresponding
Target highest can running frequency it is lower, to reduce system pressure, guarantee the reliability of system.For example, working as condensation temperature T3 ∈
[60 ,+∞), the target highest of compressor can running frequency f1；When condensation temperature T3 ∈ [50,60) when, the target of compressor is most
Height can running frequency f2；When condensation temperature T3 ∈ [32,50) when, the target highest of compressor can running frequency f3；When condensation temperature
Degree T4 ∈ [0,32) when, compressor target highest can running frequency f4；Wherein f1 < f2 < f3 < f4 ..., condensation temperature is higher,
The target highest of compressor can running frequency it is lower, i.e., the highest of compressor can running frequency and condenser state parameter at
It is negatively correlated.
In one embodiment of the application, control increase restricting element aperture, comprising: according to present input voltage,
Currently practical revolving speed, the current state parameter of condenser and updated target highest can running frequency, reacquire throttling
The target minimum aperture of element, the aperture for controlling restricting element are more than or equal to the target of the restricting element reacquired most
Small guide vane.
For example, according to present input voltage, currently practical revolving speed, the current state parameter of condenser and updated mesh
Mark highest can running frequency, inquiry obtains the minimum aperture of candidate of restricting element, according to candidate minimum aperture, determines target most
Small guide vane；Target minimum aperture is updated according to the current state parameter of condenser, comprising: determine the current of condenser
Target zone locating for state parameter chooses the corresponding candidate minimum aperture of target zone as target minimum aperture, example again
Such as, when one timing of input voltage, as shown in table 2 and table 3.
Wherein, for the target minimum aperture of restricting element with the variation of outdoor condensing pressure P3, condensing pressure is higher, corresponding
Target minimum aperture it is bigger, to reduce system pressure, guarantee the reliability of system.For example, when condensing pressure P3 ∈ [4.2 ,+
∞), the target minimum aperture e1 of restricting element；When condensing pressure P3 ∈ [3.0,4.2) when, the target minimum of restricting element is opened
Spend e2；When condensing pressure P3 ∈ [2,3.0) when, the target minimum aperture e3 of restricting element；When condensing pressure P4 ∈ [0,1.5)
When, the target minimum aperture e4 of restricting element；Wherein e1 > e2 > e3 > e4 ..., condensing pressure is higher, the target of restricting element
Minimum aperture is bigger, that is, the target minimum aperture of restricting element and the state parameter of condenser are positively correlated.
Similarly, for the target minimum aperture of restricting element with the variation of condensation temperature T3, condensation temperature is higher, corresponding
The target minimum aperture of restricting element is bigger, to reduce system pressure, guarantees the reliability of system.For example, working as condensation temperature T3
∈ [60 ,+∞), the target minimum aperture e1 of restricting element；When condensation temperature T3 ∈ [50,60) when, the target of restricting element is most
Small guide vane e2；When condensation temperature T3 ∈ [32,50) when, the target minimum aperture e3 of restricting element；When condensation temperature T4 ∈ [0,
32) when, the target minimum aperture e4 of restricting element；Wherein e1 > e2 > e3 > e4 ..., condensation temperature is higher, restricting element
Target minimum aperture is bigger, that is, the target minimum aperture of restricting element and the state parameter of condenser are positively correlated.
For another example, in another embodiment of the application, by present input voltage and currently practical revolving speed, preparatory structure is inputted
Both the input voltage built and actual speed and can be in the first corresponding relationship between running frequency, obtaining target highest can transport
Line frequency；According to the current state parameter of condenser to target highest can running frequency be updated, comprising: will currently input
The current state parameter of voltage, currently practical revolving speed and condenser inputs the input voltage constructed in advance, actual speed and cold
The state parameter three of condenser and can be in the second corresponding relationship between running frequency, frequency can be run by reacquiring target highest
Rate.
According to present input voltage and currently practical revolving speed, the target minimum aperture of restricting element is updated, comprising: will be current
Input voltage and currently practical revolving speed input between both the input voltage constructed in advance and actual speed and minimum aperture
In first corresponding relationship, target minimum aperture is obtained；Target minimum aperture is carried out more according to the current state parameter of condenser
Newly, comprising: by present input voltage, the state parameter of currently practical revolving speed and condenser, input the input electricity constructed in advance
In the second corresponding relationship between pressure, the state parameter three of actual speed and condenser and minimum aperture, target is reacquired
Minimum aperture.
In other words, can first construct in advance input voltage-actual speed-target highest can running frequency one-to-one correspondence close
System, such as f=f (V, r), then can transport target highest according to the state parameter of condenser (condensation temperature and/or condensing pressure)
Line frequency is updated, and condensation temperature and/or condensing pressure are higher, the target highest of compressor can running frequency it is lower, that is, press
The highest of contracting machine can running frequency can also be confined to condensation temperature and/or condensing pressure, according to the input voltage-constructed in advance
Actual speed-condensation temperature and/or condensing pressure-target highest can running frequency one-to-one relationship, mesh can be reacquired
Mark highest can running frequency, such as f=f (V, r, P3), f=f (V, r, T3).
Similarly, can first construct the updated target highest of input voltage-actual speed-in advance can running frequency-throttling
The one-to-one relationship of the target minimum aperture of element then (is condensed according to the state parameter of condenser such as e=f (V, r, f)
Temperature and/or condensing pressure) target minimum aperture is updated, condensation temperature and/or condensing pressure are higher, restricting element
Target minimum aperture it is bigger, i.e. the target minimum aperture of restricting element can also be confined to condensation temperature and/or condensation pressure
Power, according to the updated target highest of the input voltage-actual speed-constructed in advance can running frequency-condensation temperature and/or
The one-to-one relationship of condensing pressure-restricting element target minimum aperture, can reacquire target minimum aperture, such as e=f
(V, r, f, P3), e=f (V, r, f, T3).
It should be noted that during the running frequency to compressor is adjusted, if the operation frequency of compressor
Rate be reduced to target it is minimum can running frequency, cannot still meet the requirements, then reacquire the reality of input voltage, outdoor fan
Revolving speed and current operation frequency are adjusted with the aperture to restricting element.Similarly, in the operating parameter according to condenser
When judging whether to adjust the target minimum aperture of restricting element, the reality by reacquiring input voltage, outdoor fan turns
Fast, updated highest can running frequency, the operating parameter of condenser, be adjusted with the aperture to restricting element.
Technical solution in above-mentioned the embodiment of the present application, has at least the following technical effects or advantages:
The application can be according to the present input voltage of air conditioner and the currently practical revolving speed of outdoor fan to compressor
Running frequency and the aperture of restricting element are limited, and so as to reduce system loading when input voltage is lower, are reduced
Condensing pressure guarantees the reliability service of system.
Based on same design, the embodiment of the present application also provides the corresponding devices of method in embodiment one, see embodiment two.
Embodiment two
Fig. 3 is the block diagram of the high temperature protection device of the air conditioner of the embodiment of the present application two.
As shown in figure 3, the high temperature protection device of the air conditioner of the application, it may include: identification module 10, obtain module 20,
Frequency limit module 30 and aperture regulation module 40.
Wherein, identification module 10 identify air-conditioning according to present input voltage for obtaining the present input voltage of air conditioner
Device enters subnormal voltage operation state.Module 20 is obtained, for obtaining the currently practical revolving speed of outdoor fan in air conditioner.Frequency
Limit module 30, for obtain compressor in air conditioner it is minimum can running frequency, and according to present input voltage and current
Actual speed, obtain compressor highest can running frequency, limit compressor running frequency be less than or equal to target highest
Can running frequency, and be more than or equal to target is minimum can running frequency.Aperture regulation module 40, for detecting compressor
Current operation frequency be reduced to target it is minimum can running frequency, control increase air conditioner in restricting element aperture.
In one embodiment of the application, the control of aperture regulation module 40 increases the aperture of restricting element in air conditioner,
It is specifically used for, according to present input voltage and currently practical revolving speed, updates the target minimum aperture of restricting element in air conditioner；
Control increases the aperture of restricting element to more than equal to the target minimum aperture.
In one embodiment of the application, the highest that frequency limit module 30 obtains compressor in air conditioner can run frequency
It after rate, is also used to, the current state parameter of condenser in air conditioner is obtained, according to the current state parameter of condenser to mesh
Mark highest can running frequency be updated.Aperture regulation module 40 update air conditioner in restricting element target minimum aperture it
Afterwards, it is also used to, target minimum aperture is updated again according to the current state parameter of condenser.
In one embodiment of the application, the current state parameter of condenser include condenser condensation temperature and/or
Condensing pressure.
In one embodiment of the application, the control of aperture regulation module 40 increases the aperture of restricting element, is specifically used for,
It can be run according to present input voltage, currently practical revolving speed, the current state parameter of condenser and updated target highest
Frequency reacquires the target minimum aperture of restricting element, and the aperture for controlling restricting element is more than or equal to reacquisition
The target minimum aperture of restricting element.
In one embodiment of the application, the highest of compressor can running frequency respectively with the input voltage of air conditioner and
The revolving speed of outdoor fan is positively correlated.
In one embodiment of the application, the highest of compressor can running frequency and condenser state parameter at negative
It closes.
In one embodiment of the application, the target minimum aperture of restricting element respectively with the input voltage of air conditioner and
The revolving speed of outdoor fan is negatively correlated.
In one embodiment of the application, the target minimum aperture of restricting element and the state parameter of condenser are at positive
It closes.
It should be noted that undisclosed details in the high temperature protection device of the air conditioner in the embodiment of the present application, please join
Details disclosed in high-temperature protection method according to the air conditioner in the embodiment of the present application, specific which is not described herein again.
Technical solution in above-mentioned the embodiment of the present application, has at least the following technical effects or advantages:
The application can be according to the present input voltage of air conditioner and the currently practical revolving speed of outdoor fan to compressor
Running frequency and the aperture of restricting element are limited, and so as to reduce system loading when input voltage is lower, are reduced
Condensing pressure guarantees the reliability service of system.
Embodiment three
Based on same design, the embodiment of the present application also provides the corresponding air conditioners of device in embodiment two, see embodiment
Three.
The block diagram of the air conditioner of Fig. 4 the embodiment of the present application three.
If Fig. 4 shows, the air conditioner 100 of the embodiment of the present application can include: the high temperature protection device 110 of above-mentioned air conditioner.
Technical solution in above-mentioned the embodiment of the present application, has at least the following technical effects or advantages:
The application can be according to the present input voltage of air conditioner and the currently practical revolving speed of outdoor fan to compressor
Running frequency and the aperture of restricting element are limited, and so as to reduce system loading when input voltage is lower, are reduced
Condensing pressure guarantees the reliability service of system.
Example IV
The application also proposed a kind of electronic equipment, including memory, processor；Wherein, processor is by reading storage
The executable program code stored in device runs program corresponding with executable program code, for realizing above-mentioned air-conditioning
The high-temperature protection method of device.
Technical solution in above-mentioned the embodiment of the present application, has at least the following technical effects or advantages:
The application can be according to the present input voltage of air conditioner and the currently practical revolving speed of outdoor fan to compressor
Running frequency and the aperture of restricting element are limited, and so as to reduce system loading when input voltage is lower, are reduced
Condensing pressure guarantees the reliability service of system.
Embodiment five
The application also proposed a kind of computer readable storage medium, be stored with computer on computer readable storage medium
Program, the program realize the high-temperature protection method of above-mentioned air conditioner when being executed by processor.
Technical solution in above-mentioned the embodiment of the present application, has at least the following technical effects or advantages:
The application can be according to the present input voltage of air conditioner and the currently practical revolving speed of outdoor fan to compressor
Running frequency and the aperture of restricting element are limited, and so as to reduce system loading when input voltage is lower, are reduced
Condensing pressure guarantees the reliability service of system.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions each in flowchart and/or the block diagram
The combination of process and/or box in process and/or box and flowchart and/or the block diagram.It can provide these computers
Processor of the program instruction to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
To generate a machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute
For realizing the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram
Device.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that instruction stored in the computer readable memory generation includes
The manufacture of command device, the command device are realized in one box of one or more flows of the flowchart and/or block diagram
Or the function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer
Or the instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or box
The step of function of being specified in figure one box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The application can be by means of including several different components
Hardware and realized by means of properly programmed computer.In the unit claims listing several devices, these
Several in device, which can be, to be embodied by the same item of hardware.Word first, second, and third makes
With not indicating any sequence.These words can be construed to title.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as includes
Preferred embodiment and all change and modification for falling into the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (13)
1. a kind of high-temperature protection method of air conditioner, which comprises the following steps:
The present input voltage for obtaining air conditioner identifies that the air conditioner enters subnormal voltage operation according to the present input voltage
State；
Obtain the currently practical revolving speed of outdoor fan in the air conditioner；
Obtain compressor in the air conditioner it is minimum can running frequency, and according to the present input voltage and described current
Actual speed, obtain the compressor highest can running frequency, the running frequency for limiting the compressor is less than or equal to
The target highest can running frequency, and be greater than or equal to the target is minimum can running frequency；
Detect the compressor current operation frequency be reduced to the target it is minimum can running frequency, control increases the air-conditioning
The aperture of restricting element in device.
2. the method according to claim 1, wherein the control increases opening for restricting element in the air conditioner
Degree, comprising:
According to the present input voltage and the currently practical revolving speed, the target for updating restricting element in the air conditioner is minimum
Aperture；
Control increases the aperture of the restricting element to more than equal to the target minimum aperture.
3. according to the method described in claim 2, it is characterized in that, the highest for obtaining compressor in the air conditioner can transport
After line frequency, further includes:
The current state parameter for obtaining condenser in the air conditioner, according to the current state parameter of the condenser to the mesh
Mark highest can running frequency be updated；
It is described to update in the air conditioner after the target minimum aperture of restricting element, further includes:
The target minimum aperture is updated again according to the current state parameter of the condenser.
4. according to the method described in claim 3, it is characterized in that, the current state parameter of the condenser includes the condensation
The condensation temperature and/or condensing pressure of device.
5. the method according to claim 3 or 4, which is characterized in that the control increases the aperture of the restricting element, packet
It includes:
According to the present input voltage, the currently practical revolving speed, the condenser current state parameter and update after
The target highest can running frequency, reacquire the target minimum aperture of the restricting element, control the restricting element
Aperture be more than or equal to reacquire the restricting element target minimum aperture.
6. according to the method described in claim 5, it is characterized by further comprising: the highest of the compressor can running frequency point
Revolving speed not with the input voltage of the air conditioner and the outdoor fan is positively correlated.
7. according to the method described in claim 5, it is characterized by further comprising: the highest of the compressor can running frequency with
The state parameter of the condenser is negatively correlated.
8. according to the method described in claim 5, it is characterized by further comprising: the target minimum aperture of the restricting element point
Revolving speed not with the input voltage of the air conditioner and the outdoor fan is negatively correlated.
9. according to the method described in claim 5, it is characterized by further comprising: the target minimum aperture of the restricting element with
The state parameter of the condenser is positively correlated.
10. a kind of high temperature protection device of air conditioner characterized by comprising
Identification module identifies the air conditioner according to the present input voltage for obtaining the present input voltage of air conditioner
Into subnormal voltage operation state；
Module is obtained, for obtaining the currently practical revolving speed of outdoor fan in the air conditioner；
Frequency limit module, target for obtaining compressor in the air conditioner it is minimum can running frequency, and according to described
Present input voltage and the currently practical revolving speed, obtain compressor in the air conditioner target highest can running frequency and,
Limit the compressor running frequency be less than or equal to the target highest can running frequency, and be more than or equal to institute
Stating that target is minimum can running frequency；
Aperture regulation module, the current operation frequency for detecting the compressor be reduced to the target it is minimum run frequency
Rate, control increase the aperture of restricting element in the air conditioner.
11. a kind of air conditioner characterized by comprising the high temperature protection device of air conditioner as claimed in claim 10.
12. a kind of electronic equipment, which is characterized in that including memory, processor；
Wherein, the processor is run by reading the executable program code stored in the memory can be performed with described
The corresponding program of program code, with the high-temperature protection method for realizing the air conditioner as described in any in claim 1-9.
13. a kind of computer readable storage medium, computer program, feature are stored on the computer readable storage medium
It is, the high-temperature protection method of the air conditioner as described in any in claim 1-9 is realized when which is executed by processor.
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