CN106556112B - Compressor frequency adjusting method and device - Google Patents
Compressor frequency adjusting method and device Download PDFInfo
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- CN106556112B CN106556112B CN201611063343.8A CN201611063343A CN106556112B CN 106556112 B CN106556112 B CN 106556112B CN 201611063343 A CN201611063343 A CN 201611063343A CN 106556112 B CN106556112 B CN 106556112B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 5
- 238000011897 real-time detection Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 description 11
- 238000004378 air conditioning Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 208000011580 syndromic disease Diseases 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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- 230000035772 mutation Effects 0.000 description 1
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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
- F24F11/62—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
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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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
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- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention discloses a method and a device for adjusting the frequency of a compressor, wherein the method comprises the following steps: when the compressor works normally, acquiring the air outlet temperature, and when the air outlet temperature is in a preset range, calculating the ideal output power of the frequency converter; and calculating ideal frequency according to the relation between the ideal output power and the frequency of the frequency converter, and adjusting the frequency of the frequency converter to the ideal frequency. According to the embodiment of the invention, when the outlet air temperature is in the normal range, the frequency of the compressor is adjusted in time according to the output power of the frequency converter, so that the response speed of the compressor is improved, and the variation amplitude of the temperature is reduced.
Description
Technical field
The present embodiments relate to converter technology field more particularly to a kind of compressor frequency adjusting methods and device.
Background technique
In view of to the demand of energy-saving and emission-reduction, many electric apparatus equipment are all towards low-power consumption, efficient direction at this stage
Development.In particular, in the case where requirement of the people to the temperature of indoor environment, humidity and cleanliness is higher and higher, to air-conditioning section
It can efficiently require higher and higher.
Low temperature, low pressure saturated gas refrigerant can be compressed into high temperature height by heart of the compressor as air-conditioning refrigeration system
Pressure gaseous coolant, then through decompression throttling so that it becomes low temperature, low pressure saturated gas refrigerant, to make refrigerant in refrigeration system
Carry out refrigeration cycle.Traditional air conditioner is when being adjusted room temperature, by controlling the operating of compressor or stopping maintaining room
Interior temperature.With the development of science and technology, the appearance of convertible frequency air-conditioner, reduces air-conditioning equipment power consumption, its working efficiency is improved.It is existing
Have in technology, convertible frequency air-conditioner is that a frequency converter is increased on conventional air-conditioning, which is controlled by DC inversion compresses
The variable-frequency power sources of machine operating, to realize the adjusting to room temperature.
But when room temperature being adjusted in the prior art, transducer power will appear mutation, and the tune of compressor
Section speed can not timely match with the power of frequency converter, have hysteresis quality, cause temperature to adjust unstable situation and occur.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of compressor frequency adjusting method and device, it can be according to frequency converter
Power and compressor frequency between relationship, the frequency converter frequency is adjusted, so that frequency converter frequency be made to quickly adapt to frequency conversion
The frequency of device further decreases the amplitude of variation of temperature.
In a first aspect, the embodiment of the invention provides a kind of compressor frequency adjusting methods, comprising:
When the compressor works normally, leaving air temp is obtained, and when the leaving air temp is in preset range, meter
Calculate the ideal output power of frequency converter；
Ideal frequency is calculated according to the relationship between the frequency converter ideal output power and frequency, adjusts frequency converter frequency
To ideal frequency.
Second aspect, the embodiment of the invention also provides a kind of compressor frequency regulating devices, comprising:
Power computation module, for leaving air temp being obtained, at the leaving air temp when the compressor works normally
When normal range (NR), the ideal output power of frequency converter is calculated；
Frequency adjustment module, for calculating ideal frequency according to the relationship between the frequency converter ideal output power and frequency
Rate adjusts compressor frequency to ideal frequency.
The embodiment of the invention provides a kind of compressor frequency adjusting method and device, by by leaving air temp and default
Range is compared, when leaving air temp is in preset range, according to the ideal output power of frequency converter to current frequency into
Row adjustment.The frequent adjustment to compressor variable frequency device frequency can be reduced while realizing stable regulation temperature, avoided frequently
The temperature that frequency conversion generates phenomenon fluctuated.
Detailed description of the invention
Fig. 1 is a kind of flow chart for compressor adjusting method that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow chart of compressor adjusting method provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of flow chart for compressor adjusting method that the embodiment of the present invention three provides；
Fig. 4 is a kind of structural schematic diagram for compressor regulating device that the embodiment of the present invention four provides；
Fig. 5 is a kind of structural schematic diagram for compressor regulating device that the embodiment of the present invention five provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of flow chart for compressor adjusting method that the embodiment of the present invention one provides, and this method is applicable to become
The case where frequency air-conditioner temperature controls, this method is executed by compressor regulating device provided in an embodiment of the present invention, which can
It is realized by the way of software and/or hardware, which can be integrated in refrigeration equipment, such as can be air-conditioning.Such as Fig. 1 institute
Show, specifically include:
S101, the compressor work normally when, obtain leaving air temp, be in normal range (NR) in the leaving air temp
When, calculate the ideal output power of the frequency converter.
Air-conditioning be it is a kind of can to the parameters such as the temperature, humidity of air in indoor environment, cleanliness and velocity of liquid assets into
A kind of equipment of row regulation and control.In the present embodiment, it is initial to refer to that compressor completes booting operating for compressor normal work
Working condition after change process, the leaving air temp are the temperature of air-conditioner air outlet, usually can be used to embody current indoor environment
Temperature.Illustratively, wind-warm syndrome can be obtained out by the temperature measuring equipment that is set near air-conditioner air outlet, such as heat detector etc.
Degree.
Leaving air temp is compared with preset range.The preset range is determined according to target temperature, the mesh
Marking temperature is not definite value, but according to current indoor environment temperature by user or a certain temperature value of default, and can be with
Current indoor variation of ambient temperature., achieve the effect that adjusting and maintain indoor comfortable temperature environment.Illustratively, if wind-warm syndrome out
Degree is T, and target temperature Tm, the admissible maximum deviation of target temperature is Δ T, and (Tm+ Δ T, Tm- Δ T) is normal temperature
Range.
The leaving air temp, which is in default normal range (NR), means that current compressor can work at the low rotational speed, so that
Indoor environment temperature fluctuates in lesser range.At this moment, compressor variable frequency device output performance number can approximation be considered as and make
Cold output power value is equal, which is the ideal output power value of the frequency converter, is equal to the output of temperature adjusting
Ability.According to the relationship between compressor variable frequency device output power and general power, the ideal output of frequency converter can be calculated
Power.
Illustratively, when being freezed using air-conditioning to interior, the target temperature that refrigeration is arranged is 26 DEG C, allows temperature inclined
When difference is 2 DEG C, then preset range is at (24 DEG C, 28 DEG C), and leaving air temp is 25 DEG C, then leaving air temp is in normal temperature range
It is interior.The output power of frequency converter is ideal output power at this time, and the reducible effective fan-out capability for being equal to refrigeration can pass through meter
Calculate the ideal output power for obtaining frequency converter.
S102, ideal frequency is calculated according to the relationship between the frequency converter ideal output power and frequency, adjusts compression
Unit frequency is to ideal frequency.
Specifically, when power converter output is ideal output power, it is equal with the fan-out capability that temperature is adjusted.And
Temperature is adjusted by compressor compresses refrigerant, and therefore, the regulating power of temperature and the working frequency of compressor are related.According to
The ideal output power Q of transformer, calculates the ideal frequency H of corresponding compressor operating, and by the working frequency of compressor
It is adjusted to the ideal working frequency.
In example as above, in process of refrigerastion, the ideal output power for calculating transformer is Q, the ideal output power with
Frequency converter frequency is positively related relationship, related coefficient K.At this point, the calculation formula of frequency converter frequency H is as follows:
H=Q/K
Meanwhile then frequency converter frequency being adjusted to the resulting ideal frequency of calculating.
The present embodiment is in preset range by being compared leaving air temp with preset range in leaving air temp
When, current frequency is adjusted according to the ideal output power of frequency converter.It can subtract while realizing stable regulation temperature
Few frequent adjustment to compressor variable frequency device frequency, the temperature for avoiding frequent frequency conversion from generating phenomenon fluctuated.
Correspondingly, when leaving air temp exceeds default normal range (NR), can be compressed by changing on the basis of the present embodiment
The frequency of machine makes as fast as possible being in of leaving air temp preset normal range (NR).
Optionally, when the leaving air temp is lower than normal range (NR) lower limit, compressor frequency is reduced to next default node
Frequency.
Specifically, usually in variable-frequency refrigeration equipment, the needs that frequency converter frequency can be adjusted according to actual temperature,
Changed accordingly, to reduce the energy consumption of refrigeration equipment.In process of refrigerastion, frequency converter frequency is higher, and refrigerating capacity is bigger, out
Air temperature T is reduced with the increase of refrigerating capacity.In lower limit (the Tm- Δ T) of leaving air temp subnormal temperature range, outlet air
Temperature T is lower than actually required temperature, refrigerating capacity be greater than it is actually required, then need to reduce frequency converter frequency.It illustratively, can be pre-
If multiple nodal frequencies are arranged according to variable frequency range, when needing reduces frequency converter frequency, frequency is reduced to next default node
Frequency, until leaving air temp is not less than Tm- Δ T or frequency converter frequency value minimizes value.
Optionally, when the leaving air temp is higher than the normal range (NR) upper limit, increase the default node of compressor frequency supreme one
Frequency.
Specifically, leaving air temp T is than actually required when leaving air temp is higher than the upper limit (the Tm+ Δ T) of normal temperature range
Temperature is high, and refrigerating capacity is less than actually required, then needs to increase frequency converter frequency.Illustratively, it is possible to increase compressor frequency is supreme
One default nodal frequency is until leaving air temp is not higher than Tm+ Δ T or frequency converter frequency value rises to maximum value.
Embodiment two
Fig. 2 is a kind of flow chart of compressor adjusting method provided by Embodiment 2 of the present invention, and the present embodiment is in above-mentioned reality
It applies and is optimized on the basis of example, provide the preferred specific method for calculating frequency converter ideal output power, specifically: real
When detect the input current value and voltage value of the frequency converter, calculate the performance number of the frequency converter；According to ideal operation efficiency
Than the relationship between the performance number, the ideal output power of the frequency converter is calculated.
As shown in Fig. 2, correspondingly, the method for the embodiment of the present invention includes:
S201, the compressor work normally when, obtain leaving air temp.
S202, when leaving air temp in the normal temperature range when, the input current value and electricity of frequency converter described in real-time detection
Pressure value calculates the performance number of the frequency converter.
Specifically, the performance number of frequency converter can actually enter current value and voltage value calculating, calculation formula by frequency converter
It is as follows:
P=U × I
Wherein, P is the performance number of frequency converter, and U is the voltage that actually enters of frequency converter, and I actually enters electricity for frequency converter
Stream.
S203, according to ideal operation efficiency than the relationship between the performance number, the ideal for calculating the frequency converter is defeated
Power out.
Specifically, frequency converter is in the actual working process, in addition to compressor frequency is provided and changes required power, also have
The thermal power of a part generates.And working efficiency is a kind of amount for being able to reflect frequency converter ability to work, the wherein meter of thermal power
It is as follows to calculate formula:
Qt=P × (1-A)
Wherein, Qt is the thermal power of frequency converter, and P is the general power of frequency converter output, and A is the working efficiency of frequency converter.When
When temperature is within the scope of normal temperature, thermal power and the refrigeration work consumption phase of current compressor that the work of frequency converter generates
When the refrigeration work consumption is the ideal output power of the frequency converter, the calculation formula of the ideal output power of corresponding frequency converter
It is as follows:
Q=Qt=P × (1-A)=U × I × (1-A)
Wherein, Q is the ideal output power of frequency converter.
S204, ideal frequency is calculated according to the relationship between the frequency converter ideal output power and frequency, adjusts frequency conversion
Device frequency is to ideal frequency.
The present embodiment is when calculating the ideal power of frequency converter, the voltage value and electric current that are inputted by real-time detection transformation
Value calculates the corresponding performance number of frequency converter, and the ideal power value of the frequency converter is calculated according to the delivery efficiency of the frequency converter, from
And the ideal frequency of compressor is calculated by the ideal power value, frequency converter frequency can be precisely calculated the reason for obtaining frequency converter
Think frequency, and frequency converter is adjusted based on the ideal frequency, is reduced with realizing to the frequent of compressor variable frequency device frequency
Adjustment.
Embodiment three
Fig. 3 is a kind of flow chart for compressor adjusting method that the embodiment of the present invention three provides, and the present embodiment is in above-mentioned reality
It applies and is optimized on the basis of example, provide the mistake preferably initialized before obtaining leaving air temp to compressor frequency
Journey, specifically: by comparing current environmental temperature value and preset temperature value, determining the original frequency of the compressor, keep institute
Original frequency is stated until leaving air temp meets preset condition.As shown in figure 3, the method for corresponding the present embodiment includes:
S301, by comparing current environmental temperature value and preset temperature value, determine the original frequency of the compressor, keep
The original frequency is until leaving air temp meets preset condition.
Specifically, output temperature and frequency converter frequency have positively related relationship in refrigeration equipment.Compressor is constantly
Compression refrigerant.The initial of compressor frequency can be determined with frequency converter frequency according to the temperature of the environment in compressor starts starting
Value.Wherein, the preset temperature value temperature nodes are at least one.Under the initial frequency value, compressor constantly compresses cold
Matchmaker stablizes leaving air temp in a lower temperature.When the leaving air temp meets preset condition, to reach energy-efficient effect
Fruit, compressor no longer continue to use current initial frequency value, but begin through adjusting and reach an ideal frequency values.
It is T1, T2, T3, T4 respectively for example, the node of preset temperature value is set as 4, which can be according to tool
Body situation be determined as it is other be more than or equal to 1 number, and it is set for specific temperature value；The corresponding pressure of preset temperature value
The original frequency of contracting machine starting is H1, H2, H3, H4, H5.The number of original frequency can also determine according to specific circumstances, or
The corresponding specific performance number of setting original frequency can also be passed through.At this point, when environment temperature is less than T1, the initial frequency of compressor
Rate is determined as H1；When environment temperature is greater than T1, is less than T2, the original frequency of compressor is determined as H2；When environment temperature is greater than
T2, when being less than T3, the original frequency of compressor is determined as H3；When environment temperature is greater than T3, is less than T4, the initial frequency of compressor
Rate is determined as H4；When environment temperature is greater than T4, the original frequency of compressor is determined as H5.In the mistake of compressor frequency initialization
Cheng Zhong begins to adjust frequency converter frequency, until ideal frequency if leaving air temp T is less than Tm+ Δ T.
S302, leaving air temp is obtained, when the leaving air temp is in normal range (NR), the ideal for calculating the frequency converter is defeated
Power out.
S303, ideal frequency is calculated according to the relationship between the frequency converter ideal output power and frequency, adjusts frequency conversion
Device frequency is to ideal frequency.
The present embodiment is initialized by choosing corresponding frequency converter frequency according to indoor environment temperature, is being initialized
Cheng Zhong can effectively promote indoor environment temperature rate of change；And in the whole process, frequency converter frequency only need to be several default
It is converted between value, avoids temperature from adjusting and unstable situation occur.
Example IV
Fig. 4 is a kind of structural schematic diagram for compressor regulating device that the embodiment of the present invention four provides, and the device is applicable
In the temperature controlled situation of convertible frequency air-conditioner, the mode which can be used software and/or hardware realizes that the device can be integrated in system
In cool equipment, such as it can be air-conditioning.As shown in figure 4, the device includes: power computation module 41 and frequency adjustment module 42.
The power computation module 41 is used to leaving air temp is obtained, in the outlet air when the compressor works normally
When temperature is in normal range (NR), the ideal output power of the frequency converter is calculated；
The frequency adjustment module 42, for being calculated according to the relationship between the frequency converter ideal output power and frequency
Ideal frequency adjusts frequency converter frequency to ideal frequency.
The embodiment of the present invention is in preset range by the way that leaving air temp to be compared with preset range, in leaving air temp
When interior, current frequency is adjusted according to the ideal output power of frequency converter.Can while realizing stable regulation temperature,
The frequent adjustment to compressor variable frequency device frequency is reduced, the temperature for avoiding frequent frequency conversion from generating phenomenon fluctuated.
Embodiment five
Fig. 5 is a kind of structural schematic diagram of compressor frequency regulating device provided in an embodiment of the present invention, and the present embodiment exists
Be optimized on the basis of above-described embodiment, provide preferred power computation module 41 and specifically include: realtime power calculates
Unit 411 and ideal power computing unit 412.
The realtime power calculates unit 411, for the input current value and voltage value of frequency converter described in real-time detection, meter
Calculate the performance number of the frequency converter；
The ideal power computing unit 412, for according to ideal operation efficiency than the relationship between the performance number,
Calculate the ideal output power of the frequency converter.
Optionally, compressor regulating device provided in an embodiment of the present invention further include: compressor frequency reducing module 51.
The compressor frequency reducing module 51 is lower than normal range (NR) lower limit in the leaving air temp for obtaining leaving air temp
When, compressor frequency is reduced to next default nodal frequency.
Optionally, compressor regulating device provided in an embodiment of the present invention further include: compressor raising frequency module 52.
The compressor raising frequency module 52 is higher than the normal range (NR) upper limit in the leaving air temp for obtaining leaving air temp
When, increase the default nodal frequency of compressor frequency supreme one.
Optionally, compressor regulating device provided in an embodiment of the present invention further include: original frequency determining module 53.
The original frequency determining module 53, for determining institute by comparing current environmental temperature value and preset temperature value
The original frequency for stating compressor keeps the original frequency until leaving air temp meets preset condition.
Optionally, the preset temperature value includes at least one temperature nodes.
Compressor frequency regulating device described in the present embodiment is for executing compressor frequency tune described in the various embodiments described above
The technical effect of section method, technical principle and generation is similar, and which is not described herein again.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (12)
1. a kind of compressor frequency adjusting method characterized by comprising
When the compressor works normally, leaving air temp is obtained, and when the leaving air temp is in preset range, calculates and become
The ideal output power of frequency device；
Ideal frequency is calculated according to the relationship between the frequency converter ideal output power and frequency, adjusts frequency converter frequency famous dictum
Think frequency.
2. the method according to claim 1, wherein the ideal output power for calculating frequency converter, comprising:
The input current value and voltage value of frequency converter described in real-time detection, calculate the performance number of the frequency converter；
According to ideal operation efficiency than the relationship between the performance number, the ideal output power of the frequency converter is calculated.
3. the method according to claim 1, wherein the method also includes:
When the compressor works normally, leaving air temp is obtained, when the leaving air temp is lower than normal range (NR) lower limit, is reduced
Compressor frequency is to next default nodal frequency.
4. the method according to claim 1, wherein the method also includes:
Leaving air temp is obtained, when the leaving air temp is higher than the normal range (NR) upper limit, increases the default section of compressor frequency supreme one
Dot frequency.
5. the method according to claim 1, wherein before obtaining leaving air temp, further includes:
By comparing current environmental temperature value and preset temperature value, the original frequency of the compressor is determined, keep described initial
Frequency is until leaving air temp meets preset condition.
6. according to the method described in claim 5, it is characterized in that, the preset temperature value includes at least one temperature nodes.
7. a kind of compressor frequency regulating device characterized by comprising
Power computation module is in just for obtaining leaving air temp when the compressor works normally in the leaving air temp
When normal range, the ideal output power of frequency converter is calculated；
Frequency adjustment module, for calculating ideal frequency according to the relationship between the frequency converter ideal output power and frequency,
Frequency converter frequency is adjusted to ideal frequency.
8. device according to claim 7, which is characterized in that the power computation module includes:
Realtime power calculates unit and calculates the frequency conversion for the input current value and voltage value of frequency converter described in real-time detection
The performance number of device；
Ideal power computing unit, for, than the relationship between the performance number, calculating the change according to ideal operation efficiency
The ideal output power of frequency device.
9. device according to claim 7, which is characterized in that described device further include:
Compressor frequency reducing module, when the leaving air temp is lower than normal range (NR) lower limit, reduces compression for obtaining leaving air temp
Unit frequency is to next default nodal frequency.
10. device according to claim 7, which is characterized in that described device further include:
Compressor raising frequency module, when the leaving air temp is higher than the normal range (NR) upper limit, increases compression for obtaining leaving air temp
The default nodal frequency of unit frequency supreme one.
11. device according to claim 7, which is characterized in that described device further include:
Original frequency determining module, for determining the compressor by comparing current environmental temperature value and preset temperature value
Original frequency keeps the original frequency until leaving air temp meets preset condition.
12. device according to claim 11, which is characterized in that the preset temperature value includes at least one temperature section
Point.
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| CN201611063343.8A CN106556112B (en) | 2016-11-28 | 2016-11-28 | Compressor frequency adjusting method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107461844B (en) * | 2017-07-27 | 2020-05-05 | 广东美的制冷设备有限公司 | Air conditioning system and power control method and device thereof |
| CN107367095B (en) * | 2017-07-28 | 2020-08-04 | 广东美芝制冷设备有限公司 | Compressor power module temperature control method and control system |
| CN109386938A (en) * | 2018-09-27 | 2019-02-26 | 珠海格力电器股份有限公司 | Control method and system of air conditioner and air conditioner |
| CN111121301A (en) * | 2018-11-01 | 2020-05-08 | 青岛海尔新能源电器有限公司 | Electricity saving amount calculation method of variable-frequency heat pump water heater and heat pump water heater |
| CN113639416A (en) * | 2020-04-27 | 2021-11-12 | 青岛海尔空调电子有限公司 | Control method of variable frequency air conditioner |
| CN111750501B (en) * | 2020-05-15 | 2022-02-01 | 海信（山东）空调有限公司 | Air conditioner and control method |
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