CN104566826B - Convertible frequency air-conditioner and its compressor control method and device - Google Patents

Convertible frequency air-conditioner and its compressor control method and device Download PDF

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Publication number
CN104566826B
CN104566826B CN201410857493.0A CN201410857493A CN104566826B CN 104566826 B CN104566826 B CN 104566826B CN 201410857493 A CN201410857493 A CN 201410857493A CN 104566826 B CN104566826 B CN 104566826B
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frequency
interval
temperature
limit
input voltage
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CN104566826A (en
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朱慧君
黄勇
于光
袁兰浪
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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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
    • 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
    • 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
    • F24F2110/12—Temperature of the outside air

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a kind of frequency converting air-conditioner compressor control method, comprise the following steps：The current AC-input voltage of collection convertible frequency air-conditioner, obtains current input voltage value；According to acquired input voltage value, the predeterminated voltage limit frequency where determining the input voltage value is interval；The current outdoor environment temperature of collection, obtains current outdoor temp angle value；According to acquired outdoor temp angle value, the preset temperature limit frequency where determining the outdoor temp angle value is interval；Preset temperature limit frequency where predeterminated voltage according to where the input voltage value limits frequently interval and described outdoor temp angle value is interval, determines the actual motion frequency of frequency converting air-conditioner compressor.The invention also discloses a kind of frequency converting air-conditioner compressor control device.The invention also discloses a kind of convertible frequency air-conditioner.The present invention can realize that linearisation reduces compressor operating frequency, effectively solve that the power device temperature that exists during air-conditioner low pressure operation is too high and burnout problems, improve the running ability of air-conditioner.

Description

Convertible frequency air-conditioner and its compressor control method and device
Technical field
The present invention relates to refrigeration technology field, more particularly to a kind of convertible frequency air-conditioner and its compressor control method and device.
Background technology
Transducer air conditioning generally comprise compressor, rectification module, PFC module (i.e. power factor correction module), for driving The IPM modules (i.e. SPM) of dynamic compressor, and the composition such as control chip；Alternating current after rectification module by turning into Direct current, after PFC module is boosted and is filtered, the driving of machine is compressed by IPM modules, wherein, it is whole in rectification module IGBT and fast recovery diode, IPM modules in stream bridge heap, PFC module are powerful devices.
According to circuit theory P=U × I, the power output P to ensure compressor does not change, in AC-input voltage U drops When low, only increase input current I and just can guarantee that the constant of power output.But when input current I is bigger, rectifier bridge stack, The temperature rise of IGBT constant power devices is higher, and power device will be burned out when temperature is too high.And, rectifier bridge stack, IGBT etc. The temperature rise of power device, has a very large relationship with outdoor environment temperature, such as input current is 15A when air-conditioner freezes, In the case that outdoor environment temperature is 30 DEG C for 40 DEG C with outdoor environment temperature, the heat condition of power device is different.Thus Understand, not only AC-input voltage change influence rectifier bridge stack, the temperature rise of IGBT constant power devices, outdoor environment temperature change Influence rectifier bridge stack, the temperature rise of IGBT constant power devices.
There is the operation that compressor is accordingly reduced by the voltage range residing for current AC-input voltage frequently in prior art Rate come the scheme that avoids power device during air-conditioner low pressure operation from damaging, but, in the prior art, different voltage ranges are corresponding Running frequency changes greatly, and this will cause to differ very corresponding running frequency in different interval two adjacent voltage values institutes Greatly, cause compressor operating frequency to be mutated, influence the cooling or heating effect of air-conditioner, and prior art does not consider outdoor environment Influence of the temperature to power device temperature rise, it is impossible to which power device temperature is too high when effectively solving air-conditioner low pressure operation causes power The problem that device burns.
The content of the invention
It is a primary object of the present invention to provide a kind of convertible frequency air-conditioner and its compressor control method and device, it is intended to realize Linearisation reduces compressor operating frequency, and the power device temperature that exists is too high and burn when effectively solving the low pressure operation of air-conditioner Problem is ruined, the running ability of air-conditioner is improved.
In order to achieve the above object, the present invention provides a kind of frequency converting air-conditioner compressor control method, the convertible frequency air-conditioner pressure Contracting machine control method is comprised the following steps：
The current AC-input voltage of collection convertible frequency air-conditioner, obtains current input voltage value；
According to acquired input voltage value, the predeterminated voltage limit frequency where determining the input voltage value is interval；
The current outdoor environment temperature of collection, obtains current outdoor temp angle value；
According to acquired outdoor temp angle value, the preset temperature limit frequency where determining the outdoor temp angle value is interval；
Predeterminated voltage limit frequency according to where the input voltage value is interval and the outdoor temp angle value where it is default Temperature limit frequency is interval, determines the actual motion frequency of frequency converting air-conditioner compressor.
Preferably, the input voltage value acquired in the basis, the predeterminated voltage limit where determining the input voltage value The interval step of frequency includes：
The acquired input voltage value of detection is interval with predeterminated voltage limit frequency；
When the corresponding voltage range between default normal working zone of the input voltage value, the input is determined Predeterminated voltage limit frequency where magnitude of voltage is interval between normal working zone；
When the input voltage value be in default frequency limit interval corresponding to voltage range when, determine the input Predeterminated voltage limit frequency where magnitude of voltage is interval for frequency limit is interval；
When the input voltage value be in default frequency fixed interval corresponding to voltage range when, determine the input Predeterminated voltage limit frequency where magnitude of voltage is interval for frequency fixed interval；
When the input voltage value be in it is default it is out of service interval corresponding to voltage range when, determine the input Predeterminated voltage limit frequency where magnitude of voltage is interval for interval out of service；
Wherein, between the normal working zone, frequency limit interval, frequency fixed interval, corresponding to interval out of service Voltage is reduced successively.
Preferably, the outdoor temp angle value acquired in the basis, the preset temperature limit where determining the outdoor temp angle value The interval step of frequency includes：
The acquired outdoor temp angle value of detection is interval with preset temperature limit frequency；
When the outdoor temp angle value be in default first temperature range corresponding to temperature range when, determine the outdoor Preset temperature limit frequency where temperature value is interval for the first temperature range；
When the outdoor temp angle value be in default second temperature interval corresponding to temperature range when, determine the outdoor Preset temperature limit frequency where temperature value is interval for second temperature is interval；
When the outdoor temp angle value be in default 3rd temperature range corresponding to temperature range when, determine the outdoor Preset temperature limit frequency where temperature value is interval for the 3rd temperature range；
When the outdoor temp angle value be in default 4th temperature range corresponding to temperature range when, determine the outdoor Preset temperature limit frequency where temperature value is interval for the 4th temperature range；
Wherein, first temperature range, second temperature interval, corresponding to the 3rd temperature range, the 4th temperature range Temperature is raised successively.
Preferably, the predeterminated voltage according to where the input voltage value limits frequently interval and described outdoor temp angle value The step of preset temperature limit frequency interval at place, actual motion frequency for determining frequency converting air-conditioner compressor, includes：
Predeterminated voltage limit frequency where detecting the input voltage value is interval and the outdoor temp angle value where it is default Temperature limit frequency is interval；
When it is between normal working zone that the predeterminated voltage limit frequency where the input voltage value is interval, according to default compression Machine operation rule automatically adjusts the actual motion frequency of compressor；
When it is frequency fixed interval that the predeterminated voltage limit frequency where the input voltage value is interval, convertible frequency air-conditioner pressure is determined The actual motion frequency of contracting machine is the reference running frequency corresponding to the preset temperature limit frequency interval where the outdoor temp angle value；
When the predeterminated voltage limit frequency where the input voltage value is interval interval for frequency limit, the outdoor temp is called Pre- frequent rate computing formula and the default frequency of amendment calculating public affairs of limiting corresponding to preset temperature limit frequency interval where angle value Formula, calculates the frequent rate of limit and frequency of amendment of compressor, determines that the actual motion frequency of compressor is the frequent rate of limit and institute State the sum of frequency of amendment；
When it is out of service interval that the predeterminated voltage limit frequency where the input voltage value is interval, convertible frequency air-conditioner pressure is determined The actual motion frequency of contracting machine is zero.
Additionally, in order to achieve the above object, the present invention also provides a kind of frequency converting air-conditioner compressor control device, the frequency conversion Compressor of air conditioner control device include AC voltage sampling module, voltage limit frequency interval determination module, outdoor temperature acquisition module, Temperature limits frequency interval determination module and running frequency determining module；
The AC voltage sampling module is used to gather the current AC-input voltage of convertible frequency air-conditioner, obtains current input Magnitude of voltage；
The voltage limit frequency interval determination module is used for the input voltage according to acquired in the AC voltage sampling module Value, the predeterminated voltage limit frequency where determining the input voltage value is interval；
The outdoor temperature acquisition module is used to gather current outdoor environment temperature, obtains current outdoor temp angle value；
The temperature limit frequency interval determination module is used for the outdoor temperature according to acquired in the outdoor temperature acquisition module Value, the preset temperature limit frequency where determining the outdoor temp angle value is interval；
The predeterminated voltage limit frequency that the running frequency determining module is used for according to where the input voltage value it is interval and Preset temperature limit frequency where the outdoor temp angle value is interval, determines the actual motion frequency of frequency converting air-conditioner compressor.
Preferably, the voltage limit frequency interval determination module determines list including voltage detection unit and voltage limit frequency interval Unit；
The voltage detection unit is used to detect that acquired input voltage value is interval with predeterminated voltage limit frequency；
Voltage limit frequency interval determination unit is used in institute between the input voltage value is in default normal working zone During corresponding voltage range, the predeterminated voltage limit frequency where determining the input voltage value is interval between normal working zone；Institute When stating input voltage value and being in the voltage range corresponding to default frequency limit interval, where determining the input voltage value Predeterminated voltage limit frequency is interval for frequency limit is interval；It is in corresponding to default frequency fixed interval in the input voltage value During voltage range, the predeterminated voltage limit frequency where determining the input voltage value is interval for frequency fixed interval；In the input When magnitude of voltage is in the voltage range corresponding to default interval out of service, the default electricity where determining the input voltage value It is interval out of service that pressure limit frequency is interval；Wherein, between the normal working zone, frequency limit interval, frequency fixed interval, stop Voltage corresponding to traffic coverage is reduced successively.
Preferably, the temperature limit frequency interval determination module determines list including temperature detecting unit and temperature limit frequency interval Unit；
The temperature detecting unit is used to detect that acquired outdoor temp angle value is interval with preset temperature limit frequency；
The temperature limit frequency interval determination unit is used to be in default first temperature range institute in the outdoor temp angle value During corresponding temperature range, the preset temperature limit frequency where determining the outdoor temp angle value is interval for the first temperature range；Institute When stating outdoor temp angle value and being in the temperature range corresponding to default second temperature interval, where determining the outdoor temp angle value Preset temperature limit frequency is interval for second temperature is interval；It is in corresponding to default 3rd temperature range in the outdoor temp angle value During temperature range, the preset temperature limit frequency where determining the outdoor temp angle value is interval for the 3rd temperature range；In the outdoor When temperature value is in the temperature range corresponding to default 4th temperature range, the default temperature where determining the outdoor temp angle value It is the 4th temperature range that degree limit frequency is interval；Wherein, first temperature range, second temperature interval, the 3rd temperature range, the 4th Temperature corresponding to temperature range is raised successively.
Preferably, the running frequency determining module includes the interval detection unit of limit frequency and frequency determinative elements；
The interval detection unit of the limit frequency be used to detect the input voltage value where predeterminated voltage limit frequency it is interval and Preset temperature limit frequency where the outdoor temp angle value is interval；
It is normal operation that the frequency determinative elements are used for interval in the predeterminated voltage limit frequency where the input voltage value When interval, the actual motion frequency of compressor is automatically adjusted according to default compressor operating rule；In the input voltage value When the predeterminated voltage limit frequency interval at place is for frequency fixed interval, determine that the actual motion frequency of frequency converting air-conditioner compressor is described The reference running frequency corresponding to preset temperature limit frequency interval where outdoor temp angle value；Pre- where the input voltage value If voltage limit frequency interval is for frequency limit interval, the preset temperature limit frequency interval where calling the outdoor temp angle value is corresponding Pre- limit frequent rate computing formula and default frequency of amendment computing formula, calculate compressor the frequent rate of limit and amendment frequency Rate, the actual motion frequency for determining compressor be the frequent rate of the limit with the frequency of amendment and；In the input voltage value When the predeterminated voltage limit frequency interval at place is out of service interval, the actual motion frequency for determining frequency converting air-conditioner compressor is zero.
Additionally, in order to achieve the above object, the present invention further also provides a kind of convertible frequency air-conditioner, and the convertible frequency air-conditioner includes Frequency converting air-conditioner compressor control device, the frequency converting air-conditioner compressor control device includes that AC voltage sampling module, voltage are limited Frequency interval determination module, outdoor temperature acquisition module, temperature limit frequency interval determination module and running frequency determining module；
The AC voltage sampling module is used to gather the current AC-input voltage of convertible frequency air-conditioner, obtains current input Magnitude of voltage；
The voltage limit frequency interval determination module is used for the input voltage according to acquired in the AC voltage sampling module Value, the predeterminated voltage limit frequency where determining the input voltage value is interval；
The outdoor temperature acquisition module is used to gather current outdoor environment temperature, obtains current outdoor temp angle value；
The temperature limit frequency interval determination module is used for the outdoor temperature according to acquired in the outdoor temperature acquisition module Value, the preset temperature limit frequency where determining the outdoor temp angle value is interval；
The predeterminated voltage limit frequency that the running frequency determining module is used for according to where the input voltage value it is interval and Preset temperature limit frequency where the outdoor temp angle value is interval, determines the actual motion frequency of frequency converting air-conditioner compressor.
Convertible frequency air-conditioner and its compressor control method and device that the present invention is provided, the friendship current by gathering convertible frequency air-conditioner Stream input voltage and outdoor environment temperature, obtain corresponding input voltage value and outdoor temp angle value, and determine acquired input Preset temperature where predeterminated voltage where magnitude of voltage limits frequently interval and acquired outdoor temp angle value limits frequency interval, root It is interval according to the predeterminated voltage limit frequency interval where input voltage value and the preset temperature limit frequency where outdoor temp angle value, it is determined that becoming The actual motion frequency of frequency compressor of air conditioner.So as to by considering the current AC-input voltage of convertible frequency air-conditioner and outdoor Environment temperature determines the actual motion frequency of compressor, can realize that linearisation reduces compressor operating frequency, effectively solves The power device temperature existed during the low pressure operation of air-conditioner is too high and burnout problems, improves the running ability of air-conditioner.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of frequency converting air-conditioner compressor control method preferred embodiment of the present invention；
Fig. 2 is the schematic flow sheet of step S20 in Fig. 1；
Fig. 3 is the schematic flow sheet of step S40 in Fig. 1；
Fig. 4 is the schematic flow sheet of step S50 in Fig. 1；
Fig. 5 is the structural representation of frequency converting air-conditioner compressor control device preferred embodiment of the present invention；
Fig. 6 is the structural representation of voltage limit frequency interval determination module in Fig. 5；
Fig. 7 is the structural representation of temperature limit frequency interval determination module in Fig. 5；
Fig. 8 is the structural representation of running frequency determining module in Fig. 5.
The realization of the purpose of the present invention, functional characteristics and advantage, in conjunction with the embodiments, and will make furtherly referring to the drawings It is bright.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of frequency converting air-conditioner compressor control method.
Reference picture 1, Fig. 1 is the schematic flow sheet of frequency converting air-conditioner compressor control method preferred embodiment of the present invention.
In present pre-ferred embodiments, frequency converting air-conditioner compressor control method of the invention is comprised the following steps：
Step S10：The current AC-input voltage of collection convertible frequency air-conditioner, obtains current input voltage value.
Ideally, the AC-input voltage of convertible frequency air-conditioner is 220V, but under difficult environmental conditions, convertible frequency air-conditioner AC-input voltage may be different, and the AC-input voltage that for example some areas provide is less than 220V.The present embodiment is empty in frequency conversion When tuning to open machine operation, the current AC-input voltage of frequency converting air-conditioner compressor control device collection convertible frequency air-conditioner obtains corresponding Input voltage value, the supply voltage current to detect convertible frequency air-conditioner.Frequency converting air-conditioner compressor control device can Real-time Collection exchange Input voltage, it is also possible to according to default time interval (such as 30s), periodically gather AC-input voltage.
Step S20：According to acquired input voltage value, the predeterminated voltage Xian Pin areas where determining the input voltage value Between.
When the current input voltage value of convertible frequency air-conditioner is collected, it is thus necessary to determine that the predeterminated voltage where the input voltage value Limit frequency is interval, to primarily determine that the running frequency of frequency converting air-conditioner compressor.The default four voltages limit frequency of the present embodiment is interval, including Between normal working zone, frequency limit interval, frequency fixed interval and interval out of service.It is normal when predeterminated voltage limits frequency interval During traffic coverage, illustrate to allow the compressor of convertible frequency air-conditioner to be transported according to normal operating frequency under current AC-input voltage OK, now the running frequency of compressor can be automatically adjusted, as long as the running frequency of compressor is no more than the specified highest of compressor Running frequency；When predeterminated voltage limit frequency is interval interval for frequency limit, illustrating should under current AC-input voltage When the running frequency of limitation compressor；When it is frequency fixed interval that predeterminated voltage limit frequency is interval, illustrate defeated in current exchange Compressor can run according to fixed frequency under entering voltage；When it is frequency fixed interval that predeterminated voltage limit frequency is interval, illustrate working as Under preceding AC-input voltage, compressor should be out of service.Certainly, voltage limit frequency can be suitably increased and decreased according to actual needs interval Quantity, this is not restricted.
Step S30：The current outdoor environment temperature of collection, obtains current outdoor temp angle value.
During the current AC-input voltage of collection convertible frequency air-conditioner, the present embodiment also gathers current outdoor environment temperature Degree, obtains corresponding outdoor temp angle value, to detect whether current outdoor environment temperature influences the normal operation of compressor.Frequency conversion is empty Adjust the compressor control device can outdoor environment temperature in real time, it is also possible to according to default time interval (such as 30s), periodically to adopt Collection outdoor environment temperature.
Step S40：According to acquired outdoor temp angle value, the preset temperature Xian Pin areas where determining the outdoor temp angle value Between.
After current outdoor temp angle value is collected, it is thus necessary to determine that the preset temperature Xian Pin areas where the outdoor temp angle value Between, the actual motion frequency of compressor is ensured with the input voltage value acquired in combination, to guarantee according to outdoor environment temperature The actual motion frequency of the appropriate adjustment compressor of change of degree, it is to avoid convertible frequency air-conditioner is influenceed due to the change of outdoor environment temperature Internal power device.
The default four temperature limit frequency of the present embodiment is interval, including the first temperature range, second temperature interval, the 3rd humidity province Between and the 4th temperature range so that the predeterminated voltage limit frequency where can combining input voltage value is interval and outdoor temp angle value where Preset temperature limit frequency it is interval, the running frequency of appropriate adjustment compressor, when outdoor environment temperature is relatively low, can suitably increase pressure The running frequency of contracting machine, when outdoor environment temperature is higher, can suitably reduce the running frequency of compressor.
Step S50：Predeterminated voltage according to where the input voltage value limits frequently interval and described outdoor temp angle value institute Preset temperature limit frequency it is interval, determine the actual motion frequency of frequency converting air-conditioner compressor.
After current input voltage value and outdoor temp angle value is collected, the predeterminated voltage limit according to where input voltage value Preset temperature limit frequency where frequency interval and outdoor temp angle value is interval, it may be determined that the actual motion of frequency converting air-conditioner compressor is frequently Rate.So as to can according to current input voltage value be in normal working zone between, frequency limit interval, frequency fixed interval or stopping Traffic coverage, and current outdoor temp angle value is in the first temperature range, second temperature interval, the 3rd temperature range or the 4th Temperature range, the running frequency of appropriate adjustment compressor, it is ensured that indoor temperature is comfortable.
It should be noted that the present embodiment is only provided after first carrying out above-mentioned steps S10 and step S20, then perform above-mentioned step The situation of rapid S30 and step S40, it is of course also possible to first carry out above-mentioned steps S30 and step S40, then performs above-mentioned steps S10 With step S20, this is not restricted.
Frequency converting air-conditioner compressor control method of the invention, by gathering the current AC-input voltage of convertible frequency air-conditioner and room It is pre- where external environment temperature, the corresponding input voltage value of acquisition and outdoor temp angle value, and the acquired input voltage value of determination If the preset temperature limit frequency where the interval and acquired outdoor temp angle value of voltage limit frequency is interval, according to input voltage value institute Predeterminated voltage limit frequency is interval and outdoor temp angle value where preset temperature limit frequency it is interval, determine frequency converting air-conditioner compressor Actual motion frequency.So as to be determined by considering the current AC-input voltage of convertible frequency air-conditioner and outdoor environment temperature The actual motion frequency of compressor, can realize that linearisation reduces compressor operating frequency, effectively solve the low pressure fortune of air-conditioner The power device temperature existed during row is too high and burnout problems, improves the running ability of air-conditioner.
Fig. 2 is referred again to, Fig. 2 is the schematic flow sheet of step S20 in Fig. 1.
Based on above-described embodiment, as shown in Fig. 2 step S20 in the humidification volume automatic regulation method of humidifier shown in Fig. 1 Including：
Step S21：The acquired input voltage value of detection is interval with predeterminated voltage limit frequency.
After the corresponding input voltage value of current AC-input voltage is obtained, detect acquired input voltage value and preset Voltage limit frequency is interval, and it is interval to limit frequency by the input voltage value acquired in detection and predeterminated voltage, it may be determined that acquired input Predeterminated voltage limit frequency where magnitude of voltage is interval, that is, determine acquired input voltage value between normal working zone, frequency limit System interval, frequency fixed interval or interval out of service.
Acquired input electricity is can determine whether during the input voltage value acquired in detection and predeterminated voltage limit frequency interval Which default electricity between pressure value is in normal working zone, in frequency limit interval, frequency fixed interval and interval out of service Pressure limit frequency is interval, for example, can first judge the input voltage value whether corresponding voltage between default normal working zone It is interval.
Step S22：Judge the input voltage value whether corresponding voltage range between the default normal working zone； If the corresponding voltage range between default normal working zone of input voltage value, into step S23；If input voltage value Corresponding voltage range between default normal working zone is not at, then into step S24.
Step S23：Predeterminated voltage limit frequency where determining the input voltage value is interval between normal working zone.
When whether corresponding between the default normal working zone voltage range of the input voltage value is judged, if defeated Enter the corresponding voltage range between default normal working zone of magnitude of voltage, it is determined that default where the input voltage value Voltage limit frequency is interval between normal working zone；If input voltage value is not at corresponding voltage zone between default normal working zone Between, then may determine that whether input voltage value is interval in other predeterminated voltages limit frequency in addition to normal working zone, for example first Judge the input voltage value whether in the voltage range corresponding to default frequency limit interval.
Step S24：Judge the input voltage value whether in the voltage range corresponding to default frequency limit interval； If input voltage value is in the voltage range corresponding to default frequency limit interval, into step S25；If input voltage value The voltage range corresponding to default frequency limit interval is not at, then into step S26.
Step S25：Predeterminated voltage limit frequency where determining the input voltage value is interval for frequency limit is interval.
When judging whether the input voltage value is in the voltage range corresponding to default frequency limit interval, if defeated Enter magnitude of voltage in the voltage range corresponding to default frequency limit interval, it is determined that default where the input voltage value Voltage limit frequency is interval for frequency limit is interval；If input voltage value is not at the voltage zone corresponding to default frequency limit interval Between, then may determine that input voltage value whether in other predeterminated voltages limit in addition to normal working zone, frequency limit interval Whether frequency is interval, for example, first judge the input voltage value in the voltage range corresponding to default frequency fixed interval.
Step S26：Judge the input voltage value whether in the voltage range corresponding to default frequency fixed interval； If input voltage value is in the voltage range corresponding to default frequency fixed interval, into step S27；If input voltage value The voltage range corresponding to default frequency fixed interval is not at, then into step S28.
Step S27：Predeterminated voltage limit frequency where determining the input voltage value is interval for frequency fixed interval.
Step S28：Predeterminated voltage limit frequency where determining the input voltage value is interval for interval out of service.
When judging whether the input voltage value is in the voltage range corresponding to default frequency fixed interval, if defeated Enter magnitude of voltage in the voltage range corresponding to default frequency fixed interval, it is determined that default where the input voltage value It is frequency fixed interval that voltage limit frequency is interval；If input voltage value is not at the voltage zone corresponding to default frequency fixed interval Between, then may determine that input voltage value is in the voltage range corresponding to default interval out of service, it is described so as to can determine that Predeterminated voltage limit frequency where input voltage value is interval for interval out of service.
Wherein, between the normal working zone, frequency limit interval, frequency fixed interval, corresponding to interval out of service Voltage is reduced successively, for example, set AC-input voltage higher than 205V as between normal working zone, interval in 186~192V is frequency Rate limit section, interval in 150~166V is frequency fixed interval, is interval out of service less than 130V.
Fig. 3 is referred again to, Fig. 3 is the schematic flow sheet of step S40 in Fig. 1.
Based on above-described embodiment, as shown in figure 3, step S40 in the humidification volume automatic regulation method of humidifier shown in Fig. 3 Including：
Step S41：The acquired outdoor temp angle value of detection is interval with preset temperature limit frequency.
After the corresponding outdoor temp angle value of current outdoor environment temperature is obtained, detect acquired outdoor temp angle value and preset Temperature limit frequency is interval, and it is interval to limit frequency by the outdoor temp angle value acquired in detection and preset temperature, it may be determined that acquired outdoor Preset temperature limit frequency where temperature value is interval, that is, determine that acquired outdoor temp angle value is in the first temperature range, the second temperature Degree interval, the 3rd temperature range or the 4th temperature range.
Acquired outdoor temp angle value is can determine whether during acquired outdoor temp angle value and preset temperature limit frequency interval Which preset temperature limit in the first temperature range, interval second temperature, the 3rd temperature range and the 4th temperature range Whether frequency is interval, for example, can first judge the outdoor temp angle value in the temperature range corresponding to default first temperature range.
Step S42：Judge the outdoor temp angle value whether in the temperature range corresponding to default first temperature range； If the outdoor temp angle value is in the temperature range corresponding to default first temperature range, into step S43；If the room Outer temperature value is not at the temperature range corresponding to default first temperature range, then into step S44.
Step S43：Preset temperature limit frequency where determining the outdoor temp angle value is interval for the first temperature range.
When judging whether the outdoor temp angle value is in the temperature range corresponding to default first temperature range, if room Outer temperature value is in the temperature range corresponding to default first temperature range, it is determined that default where the outdoor temp angle value It is the first temperature range that temperature limit frequency is interval；If outdoor temp angle value is not at the humidity province corresponding to default first temperature range Between, then may determine that whether outdoor temp angle value is interval in other preset temperatures limit frequency in addition to the first temperature range, for example, Can first judge the outdoor temp angle value whether in the temperature range corresponding to default second temperature interval.
Step S44：Whether the outdoor temp angle value is judged in the temperature range corresponding to default second temperature interval, If the outdoor temp angle value is in the temperature range corresponding to default second temperature interval, into step S45；If the room Outer temperature value is not at the temperature range corresponding to default second temperature interval, then into step S46.
Step S45：Preset temperature limit frequency where determining the outdoor temp angle value is interval for second temperature is interval.
When judging whether the outdoor temp angle value is in the temperature range corresponding to default second temperature interval, if room Outer temperature value is in the temperature range corresponding to default second temperature interval, it is determined that default where the outdoor temp angle value Temperature limit frequency is interval for second temperature is interval；If outdoor temp angle value is not at the humidity province corresponding to default second temperature interval Between, then may determine that outdoor temp angle value whether in other preset temperatures in addition to the first temperature range, second temperature interval Whether limit frequency is interval, for example, can first judge the outdoor temp angle value in the humidity province corresponding to default 3rd temperature range Between.
Step S46：Judge the outdoor temp angle value whether in the temperature range corresponding to default 3rd temperature range； If the outdoor temp angle value is in the temperature range corresponding to default 3rd temperature range, into step S47, if the room Outer temperature value is not at the temperature range corresponding to default 3rd temperature range, then into step S48.
Step S47：Preset temperature limit frequency where determining the outdoor temp angle value is interval for the 3rd temperature range.
Step S48：Preset temperature limit frequency where determining the outdoor temp angle value is interval for the 4th temperature range.
When judging whether the outdoor temp angle value is in the temperature range corresponding to default 3rd temperature range, if room Outer temperature value is in the temperature range corresponding to default 3rd temperature range, it is determined that default where the outdoor temp angle value It is the 3rd temperature range that temperature limit frequency is interval；If outdoor temp angle value is not at the humidity province corresponding to default 3rd temperature range Between, then may determine that outdoor temp angle value is in the temperature range corresponding to default 4th temperature range, it is described so as to can determine that Preset temperature limit frequency where outdoor temp angle value is interval for the 4th temperature range.
Wherein, first temperature range, second temperature interval, corresponding to the 3rd temperature range, the 4th temperature range Temperature is raised successively, for example set outdoor environment temperature less than 40 DEG C be the first temperature range, outdoor environment temperature be in 41~ 44.5 DEG C is interval second temperature, and it is the 3rd temperature range, outdoor environment temperature that outdoor environment temperature is in 45.5~49.5 DEG C It is the 4th temperature range higher than 50 DEG C.
Fig. 4 is referred again to, Fig. 4 is the schematic flow sheet of step S50 in Fig. 1.
Based on above-described embodiment, as shown in figure 4, step S50 in the humidification volume automatic regulation method of humidifier shown in Fig. 4 Including：
Step S51：Predeterminated voltage where detecting the input voltage value limits frequently interval and described outdoor temp angle value institute Preset temperature limit frequency it is interval.
It is pre- where the predeterminated voltage where detecting the input voltage value limits frequently interval and described outdoor temp angle value If temperature limit frequency is interval, predeterminated voltage limit frequency where can determine whether input voltage value it is interval between normal working zone, frequency limit System interval, frequency fixed interval or interval out of service, while the preset temperature limit frequency where can determine whether outdoor temp angle value is interval It is the first temperature range, interval second temperature, the 3rd temperature range or the 4th temperature range, according to judged result, mutually should determine that The running frequency of compressor, for example, whether the predeterminated voltage limit frequency interval where first judging the input voltage value is normal fortune Row is interval.
Step S52：Between whether the predeterminated voltage limit frequency interval where judging the input voltage value is normal working zone；If Between predeterminated voltage limit frequency interval where the input voltage value is normal working zone, then into step S53；If the input electricity Predeterminated voltage limit frequency interval where pressure value is not normally operated interval, then into step S54.
Step S53：The actual motion frequency of compressor is automatically adjusted according to default compressor operating rule.
When the predeterminated voltage limit frequency interval where judging the input voltage value is between normal working zone, illustrate now The AC-input voltage of convertible frequency air-conditioner allows compressor to be run according to normal operating frequency, is not limited by AC-input voltage, has Body can run according to default compressor operating mode, and for example compressor first runs according to specified maximum running frequency, works as detection When reaching preset temperature threshold values (such as 26 DEG C) to the temperature of convertible frequency air-conditioner internal power device, under the running frequency of compressor is automatic Drop to a certain predeterminated frequency less than specified maximum running frequency, when the temperature for detecting convertible frequency air-conditioner internal power device again When reaching preset temperature threshold values, the running frequency of compressor is automatically lowered another predeterminated frequency, by that analogy, compressor it is upper State Frequency Conversion Theory and be known in the art general knowledge, here is omitted.
Step S54：Whether the predeterminated voltage limit frequency interval where judging the input voltage value is frequency fixed interval；If Predeterminated voltage limit frequency interval where the input voltage value is frequency fixed interval, then into step S55；If the input electricity Predeterminated voltage limit frequency interval where pressure value is not frequency fixed interval, then into step S56.
Step S55：The actual motion frequency for determining frequency converting air-conditioner compressor is the default temperature where the outdoor temp angle value Reference running frequency corresponding to degree limit frequency interval.
The present invention refers to running frequency according to the interval correspondence default of each preset temperature limit frequency, specifically, according to first Temperature range correspondence preset first reference running frequency (such as 45Hz), according to the interval correspondence preset second reference operation of second temperature Frequency (such as 35Hz), according to the 3rd temperature range correspondence the default 3rd with reference to running frequency (such as 30Hz), according to the 4th humidity province Between correspondence the default 4th with reference to running frequency (such as 20Hz).
When the predeterminated voltage limit frequency interval where judging the input voltage value is for frequency fixed interval, illustrate now The AC-input voltage of convertible frequency air-conditioner allows the compressor to be with the reference running frequency that a certain preset temperature is limited corresponding to frequency interval Fixed frequency is run.Specifically, when it is the first temperature range that the preset temperature limit frequency where the outdoor temp angle value is interval, really The actual motion frequency of frequency converting air-conditioner compressor is determined for first refers to running frequency；Default temperature where the outdoor temp angle value Degree limit frequency it is interval for second temperature it is interval when, determine the actual motion frequency of frequency converting air-conditioner compressor for second with reference to operation frequency Rate；When it is three temperature ranges that the preset temperature limit frequency where the outdoor temp angle value is interval, frequency converting air-conditioner compressor is determined Actual motion frequency refer to running frequency for the 3rd；It is the 4th when the preset temperature limit frequency where the outdoor temp angle value is interval During temperature range, determine the actual motion frequency of frequency converting air-conditioner compressor for the 4th refers to running frequency.
Step S56：Whether the predeterminated voltage limit frequency interval where judging the input voltage value is interval frequency limit；If Predeterminated voltage limit frequency where the input voltage value is interval for frequency limit is interval, then into step S57；If the input electricity Predeterminated voltage limit frequency interval where pressure value is not interval frequency limit, then into step S58.
Step S57：The pre- frequent rate of limiting corresponding to preset temperature limit frequency interval where calling the outdoor temp angle value Computing formula and default frequency of amendment computing formula, calculate the frequent rate of limit and frequency of amendment of compressor, determine compressor Actual motion frequency be the frequent rate of the limit with the frequency of amendment and.
When the predeterminated voltage limit frequency where judging the input voltage value is interval interval for frequency limit, illustrate working as Under preceding AC-input voltage and outdoor environment temperature, the running frequency of compressor should be limited, reduce the operation of compressor frequently Rate.
Specifically, in the case of the interval interval for frequency limit of predeterminated voltage limit frequency where the input voltage value, If the preset temperature limit frequency interval where the outdoor temp angle value is the first temperature range, call corresponding to the first temperature range The frequent rate computing formula of default first limit, calculate the first frequent rate Fv1 of limit, call default the corresponding to the first temperature range One frequency of amendment computing formula, calculates the first frequency of amendment △ Fv1, determines that the actual motion frequency of compressor is the described first limit Frequent rate and first frequency of amendment and.
The present embodiment preferably presets the first frequent rate computing formula of limit：
Fv1=Fref1.
First frequency of amendment computing formula is：
△ Fv1=[Fd1/ (Vmax-Vmin)] * (U-Vmin).
Wherein, Fref1 refers to running frequency for above-mentioned first, and Fd1 is first corresponding to default first temperature range Frequency correction value (such as 5Hz), the input voltage value that U is obtained by the current AC-input voltage of collection, Vmax is frequency limit area Between maximum input voltage value, Vmin is the interval minimum input voltage value of frequency limit.So as to where input voltage value It is the first humidity province that the interval preset temperature limit frequency where frequency limit interval and outdoor temp angle value of predeterminated voltage limit frequency is interval Between when, adjust compressor actual motion frequency be：
F=Fv1+ △ Fv1.
If the preset temperature limit frequency interval where the outdoor temp angle value is for second temperature interval, second temperature is called The frequent rate computing formula of default second limit corresponding to interval, calculates the second frequent rate of limit, calls second temperature interval corresponding Default second frequency of amendment computing formula, calculate the second frequency of amendment, determine that the actual motion frequency of compressor is described the The two frequent rates of limit and second frequency of amendment and.
The present embodiment preferably presets the second frequent rate computing formula of limit：
Fv2=(Fref1-Fref2)/(T2-T1) * (T2-T)+Fref2.
Second frequency of amendment computing formula is：
△ Fv2=[Fd2/ (Vmax-Vmin)] * (U-Vmin).
Wherein, Fref2 refers to running frequency for above-mentioned second, and Fd2 is second corresponding to default second temperature interval Frequency correction value (such as 5Hz), T is to gather the outdoor temp angle value that current outdoor environment temperature is obtained, and T2 is the 3rd temperature range Minimum outdoor temperature value, T1 is the maximum outdoor temp angle value of the first temperature range.So as to when default where input voltage value When preset temperature limit frequency interval of the voltage limit frequency interval where frequency limit interval and outdoor temp angle value is for second temperature interval, Adjust compressor actual motion frequency be：
F=Fv2+ △ Fv2.
If the preset temperature limit frequency interval where the outdoor temp angle value is for three temperature ranges, the 3rd temperature is called The frequent rate computing formula of default 3rd limit corresponding to interval, calculates the 3rd frequent rate of limit, calls corresponding to the 3rd temperature range Default 3rd frequency of amendment computing formula, calculate the 3rd frequency of amendment, determine that the actual motion frequency of compressor is described the The three frequent rates of limit and the 3rd frequency of amendment and.
The present embodiment preferably presets the 3rd frequent rate computing formula of limit：
Fv3=(Fref2-Fref3)/(T3-T2) * (T3-T)+Fref3.
3rd frequency of amendment computing formula is：
△ Fv3=[Fd3/ (Vmax-Vmin)] * (U-Vmin).
Wherein, Fref3 refers to running frequency for the above-mentioned 3rd, and Fd3 is the 3 corresponding to default 3rd temperature range Frequency correction value (such as 5Hz), T3 is the minimum outdoor temperature value of the 4th temperature range.So as to when pre- where input voltage value If it is the 3rd temperature range that the interval preset temperature limit frequency where frequency limit interval and outdoor temp angle value of voltage limit frequency is interval When, the actual motion frequency for adjusting compressor is：
F=Fv3+ △ Fv3.
If the preset temperature limit frequency interval where the outdoor temp angle value is for four temperature ranges, the 4th temperature is called The frequent rate computing formula of default 4th limit corresponding to interval, calculates the 4th frequent rate of limit, calls corresponding to the 4th temperature range Default 4th frequency of amendment computing formula, calculate the 4th frequency of amendment, determine that the actual motion frequency of compressor is described the The four frequent rates of limit and the 4th frequency of amendment and.
The present embodiment preferably presets the 4th frequent rate computing formula of limit：
Fv4=Fref4.
4th frequency of amendment computing formula is：
△ Fv4=0.
Wherein, Fref4 refers to running frequency for the above-mentioned 4th.So as to when the predeterminated voltage where input voltage value limits frequency When the interval preset temperature limit frequency interval where frequency limit interval and outdoor temp angle value is for four temperature ranges, compression is adjusted The actual motion frequency of machine is：
F=Fv4+ △ Fv4=Fv4.
So as to so that compressor is with the above-mentioned 4th with reference to running frequency as fixed frequency operation.
Step S58：The actual motion frequency for determining frequency converting air-conditioner compressor is zero.
When the predeterminated voltage limit frequency interval where judging the input voltage value is not interval frequency limit, can determine whether Predeterminated voltage limit frequency interval where the input voltage value is interval out of service, is illustrated in current AC-input voltage Under, compressor should be out of service, so as to the actual motion frequency that can determine that frequency converting air-conditioner compressor is zero, to control compressor It is out of service, it is to avoid the compressor of convertible frequency air-conditioner and other parts damages.
The present invention also provides a kind of frequency converting air-conditioner compressor control device.
Reference picture 5, Fig. 5 is the structural representation of frequency converting air-conditioner compressor control device preferred embodiment of the present invention.
In frequency converting air-conditioner compressor control device preferred embodiment of the present invention, the frequency converting air-conditioner compressor control device bag Include AC voltage sampling module 100, voltage limit frequency interval determination module 200, outdoor temperature acquisition module 300, temperature Xian Pin areas Between determining module 400 and running frequency determining module 500.
The AC voltage sampling module 100 is used to gather the current AC-input voltage of convertible frequency air-conditioner, obtains current Input voltage value.
Ideally, the AC-input voltage of convertible frequency air-conditioner is 220V, but under difficult environmental conditions, convertible frequency air-conditioner AC-input voltage may be different, and the AC-input voltage that for example some areas provide is less than 220V.The present embodiment is empty in frequency conversion When tuning to open machine operation, it is current that frequency converting air-conditioner compressor control device gathers convertible frequency air-conditioner by AC voltage sampling module 100 AC-input voltage, obtains corresponding input voltage value, the supply voltage current to detect convertible frequency air-conditioner.Frequency converting air-conditioner compressor The AC voltage sampling module 100 of control device can Real-time Collection AC-input voltage, it is also possible to according to default time interval (such as 30s), periodically gathers AC-input voltage.
The voltage limit frequency interval determination module 200 is used for defeated according to acquired in the AC voltage sampling module 100 Enter magnitude of voltage, the predeterminated voltage limit frequency where determining the input voltage value is interval.
When AC voltage sampling module 100 collects the current input voltage value of convertible frequency air-conditioner, it is necessary to be limited by voltage Predeterminated voltage limit frequency where frequency interval determination module 200 determines the input voltage value is interval, to primarily determine that convertible frequency air-conditioner pressure The running frequency of contracting machine.The default four voltages limit frequency of the present embodiment is interval, including between normal working zone, frequency limit is interval, frequency Rate fixed interval and interval out of service.When it is between normal working zone that predeterminated voltage limit frequency is interval, illustrate in current exchange The compressor of convertible frequency air-conditioner is allowed to be run according to normal operating frequency under input voltage, now the running frequency of compressor can be automatic Regulation, as long as the running frequency of compressor is no more than the specified maximum running frequency of compressor；When predeterminated voltage Xian Pin areas Between for frequency limit it is interval when, illustrate that the running frequency of compressor should be limited under current AC-input voltage；When default When voltage limit frequency interval is for frequency fixed interval, illustrate that compressor can be transported according to fixed frequency under current AC-input voltage OK；When it is frequency fixed interval that predeterminated voltage limit frequency is interval, illustrate under current AC-input voltage, compressor should stop Only run.Certainly, the interval quantity of voltage limit frequency can be suitably increased and decreased according to actual needs, this is not restricted.
The outdoor temperature acquisition module 300 is used to gather current outdoor environment temperature, obtains current outdoor temperature Value.
During the current AC-input voltage of the collection convertible frequency air-conditioner of AC voltage sampling module 100, the present embodiment is also Current outdoor environment temperature is gathered by outdoor temperature acquisition module 300, corresponding outdoor temp angle value is obtained, it is current to detect Whether outdoor environment temperature influences the normal operation of compressor.Frequency converting air-conditioner compressor control device can be by AC voltage sampling The real-time outdoor environment temperature of module 100, it is also possible to according to default time interval (such as 30s), periodically gather outdoor environment Temperature.
The temperature limit frequency interval determination module 400 is used for the room according to acquired in the outdoor temperature acquisition module 300 Outer temperature value, the preset temperature limit frequency where determining the outdoor temp angle value is interval.
, it is necessary to limit frequency interval really by temperature after outdoor temperature acquisition module 300 collects current outdoor temp angle value Preset temperature limit frequency where cover half block 400 determines the outdoor temp angle value is interval, is ensured with the input voltage value acquired in combination The actual motion frequency of compressor, to guarantee the actual motion of the appropriate adjustment compressor of change according to outdoor environment temperature Frequency, it is to avoid convertible frequency air-conditioner internal power device is influenceed due to the change of outdoor environment temperature.
The default four temperature limit frequency of the present embodiment is interval, including the first temperature range, second temperature interval, the 3rd humidity province Between and the 4th temperature range so that the predeterminated voltage limit frequency where can combining input voltage value is interval and outdoor temp angle value where Preset temperature limit frequency it is interval, the running frequency of appropriate adjustment compressor, when outdoor environment temperature is relatively low, can suitably increase pressure The running frequency of contracting machine, when outdoor environment temperature is higher, can suitably reduce the running frequency of compressor.
Predeterminated voltage limit frequency that the running frequency determining module 500 is used for according to where the input voltage value it is interval with And the preset temperature limit frequency interval where the outdoor temp angle value, determine the actual motion frequency of frequency converting air-conditioner compressor.
Current input voltage value is collected in AC voltage sampling module 100 and outdoor temperature acquisition module 300 is gathered To after current outdoor temp angle value, predeterminated voltage limit frequency of the running frequency determining module 500 according to where input voltage value is interval And the preset temperature limit frequency interval where outdoor temp angle value, it may be determined that the actual motion frequency of frequency converting air-conditioner compressor.So as to Can according to current input voltage value be in normal working zone between, frequency limit interval, frequency fixed interval or area out of service Between, and current outdoor temp angle value is in interval the first temperature range, second temperature, the 3rd temperature range or the 4th humidity province Between, the running frequency of appropriate adjustment compressor, it is ensured that indoor temperature is comfortable.
Frequency converting air-conditioner compressor control device of the invention, by gathering the current AC-input voltage of convertible frequency air-conditioner and room It is pre- where external environment temperature, the corresponding input voltage value of acquisition and outdoor temp angle value, and the acquired input voltage value of determination If the preset temperature limit frequency where the interval and acquired outdoor temp angle value of voltage limit frequency is interval, according to input voltage value institute Predeterminated voltage limit frequency is interval and outdoor temp angle value where preset temperature limit frequency it is interval, determine frequency converting air-conditioner compressor Actual motion frequency.So as to be determined by considering the current AC-input voltage of convertible frequency air-conditioner and outdoor environment temperature The actual motion frequency of compressor, can realize that linearisation reduces compressor operating frequency, effectively solve the low pressure fortune of air-conditioner The power device temperature existed during row is too high and burnout problems, improves the running ability of air-conditioner.
Fig. 6 is referred again to, Fig. 6 is the structural representation of voltage limit frequency interval determination module in Fig. 5.
As shown in fig. 6, voltage limit frequency interval determination module 200 is wrapped in frequency converting air-conditioner compressor control device shown in Fig. 5 Include voltage detection unit 210 and voltage limit frequency interval determination unit 220.
The voltage detection unit 210 is used to detect that acquired input voltage value is interval with predeterminated voltage limit frequency.
After AC voltage sampling module 100 obtains the corresponding input voltage value of current AC-input voltage, voltage detecting Unit 210 detects that acquired input voltage value is interval with predeterminated voltage limit frequency, by the input voltage value acquired in detection with Predeterminated voltage limit frequency is interval, it may be determined that the predeterminated voltage limit frequency where acquired input voltage value is interval, that is, determine acquired Input voltage value be in normal working zone between, frequency limit interval, frequency fixed interval or interval out of service.
The voltage limit frequency interval determination unit 220 is used in the input voltage value between default normal working zone During corresponding voltage range, the predeterminated voltage limit frequency where determining the input voltage value is interval between normal working zone； When the input voltage value is in the voltage range corresponding to default frequency limit interval, the input voltage value place is determined Predeterminated voltage limit frequency it is interval for frequency limit is interval；It is in corresponding to default frequency fixed interval in the input voltage value Voltage range when, it is frequency fixed interval that predeterminated voltage limit frequency where determining the input voltage value is interval；Described defeated When entering magnitude of voltage and being in the voltage range corresponding to default interval out of service, determine default where the input voltage value It is interval out of service that voltage limit frequency is interval；Wherein, between the normal working zone, frequency limit interval, frequency fixed interval, stop Only the voltage corresponding to traffic coverage is reduced successively, for example, set AC-input voltage higher than 205V between normal working zone, to locate Interval in 186~192V is interval frequency limit, and interval in 150~166V is frequency fixed interval, is stopping less than 130V Traffic coverage.
Acquired input electricity is can determine whether during the input voltage value acquired in detection and predeterminated voltage limit frequency interval Which default electricity between pressure value is in normal working zone, in frequency limit interval, frequency fixed interval and interval out of service Pressure limit frequency is interval, for example, can first judge the input voltage value whether corresponding voltage between default normal working zone It is interval.
When whether corresponding between the default normal working zone voltage range of the input voltage value is judged, if defeated Enter the corresponding voltage range between default normal working zone of magnitude of voltage, it is determined that default where the input voltage value Voltage limit frequency is interval between normal working zone；If input voltage value is not at corresponding voltage zone between default normal working zone Between, then may determine that whether input voltage value is interval in other predeterminated voltages limit frequency in addition to normal working zone, for example first Judge the input voltage value whether in the voltage range corresponding to default frequency limit interval.
When judging whether the input voltage value is in the voltage range corresponding to default frequency limit interval, if defeated Enter magnitude of voltage in the voltage range corresponding to default frequency limit interval, it is determined that default where the input voltage value Voltage limit frequency is interval for frequency limit is interval；If input voltage value is not at the voltage zone corresponding to default frequency limit interval Between, then may determine that input voltage value whether in other predeterminated voltages limit in addition to normal working zone, frequency limit interval Whether frequency is interval, for example, first judge the input voltage value in the voltage range corresponding to default frequency fixed interval.
When judging whether the input voltage value is in the voltage range corresponding to default frequency fixed interval, if defeated Enter magnitude of voltage in the voltage range corresponding to default frequency fixed interval, it is determined that default where the input voltage value It is frequency fixed interval that voltage limit frequency is interval；If input voltage value is not at the voltage zone corresponding to default frequency fixed interval Between, then may determine that input voltage value is in the voltage range corresponding to default interval out of service, it is described so as to can determine that Predeterminated voltage limit frequency where input voltage value is interval for interval out of service.
Fig. 7 is the structural representation of temperature limit frequency interval determination module in Fig. 5.
As shown in fig. 7, temperature limit frequency interval determination module 400 is wrapped in frequency converting air-conditioner compressor control device shown in Fig. 5 Include temperature detecting unit 410 and temperature limit frequency interval determination unit 420；
The temperature detecting unit 410 is used to detect that acquired outdoor temp angle value is interval with preset temperature limit frequency.
After the corresponding outdoor temp angle value of current outdoor environment temperature is obtained, detect acquired outdoor temp angle value and preset Temperature limit frequency is interval, and it is interval to limit frequency by the outdoor temp angle value acquired in detection and preset temperature, it may be determined that acquired outdoor Preset temperature limit frequency where temperature value is interval, that is, determine that acquired outdoor temp angle value is in the first temperature range, the second temperature Degree interval, the 3rd temperature range or the 4th temperature range.
The temperature limit frequency interval determination unit 420 is used to be in default first temperature range in the outdoor temp angle value During corresponding temperature range, it is the first temperature range that preset temperature limit frequency where determining the outdoor temp angle value is interval； When the outdoor temp angle value is in the temperature range corresponding to default second temperature interval, the outdoor temp angle value place is determined Preset temperature limit frequency it is interval for second temperature is interval；It is in corresponding to default 3rd temperature range in the outdoor temp angle value Temperature range when, it is the 3rd temperature range that preset temperature limit frequency where determining the outdoor temp angle value is interval；In the room When outer temperature value is in the temperature range corresponding to default 4th temperature range, determine default where the outdoor temp angle value It is the 4th temperature range that temperature limit frequency is interval；Wherein, first temperature range, second temperature interval, the 3rd temperature range, Temperature corresponding to four temperature ranges is raised successively, and it is the first temperature range, room less than 40 DEG C for example to set outdoor environment temperature It is interval second temperature that external environment temperature is in 41~44.5 DEG C, and it is the 3rd temperature that outdoor environment temperature is in 45.5~49.5 DEG C Interval, outdoor environment temperature is the 4th temperature range higher than 50 DEG C.
Acquired outdoor temp angle value is can determine whether during acquired outdoor temp angle value and preset temperature limit frequency interval Which preset temperature limit in the first temperature range, interval second temperature, the 3rd temperature range and the 4th temperature range Whether frequency is interval, for example, can first judge the outdoor temp angle value in the temperature range corresponding to default first temperature range.
When judging whether the outdoor temp angle value is in the temperature range corresponding to default first temperature range, if room Outer temperature value is in the temperature range corresponding to default first temperature range, it is determined that default where the outdoor temp angle value It is the first temperature range that temperature limit frequency is interval；If outdoor temp angle value is not at the humidity province corresponding to default first temperature range Between, then may determine that whether outdoor temp angle value is interval in other preset temperatures limit frequency in addition to the first temperature range, for example, Can first judge the outdoor temp angle value whether in the temperature range corresponding to default second temperature interval.
When judging whether the outdoor temp angle value is in the temperature range corresponding to default second temperature interval, if room Outer temperature value is in the temperature range corresponding to default second temperature interval, it is determined that default where the outdoor temp angle value Temperature limit frequency is interval for second temperature is interval；If outdoor temp angle value is not at the humidity province corresponding to default second temperature interval Between, then may determine that outdoor temp angle value whether in other preset temperatures in addition to the first temperature range, second temperature interval Whether limit frequency is interval, for example, can first judge the outdoor temp angle value in the humidity province corresponding to default 3rd temperature range Between.
When judging whether the outdoor temp angle value is in the temperature range corresponding to default 3rd temperature range, if room Outer temperature value is in the temperature range corresponding to default 3rd temperature range, it is determined that default where the outdoor temp angle value It is the 3rd temperature range that temperature limit frequency is interval；If outdoor temp angle value is not at the humidity province corresponding to default 3rd temperature range Between, then may determine that outdoor temp angle value is in the temperature range corresponding to default 4th temperature range, it is described so as to can determine that Preset temperature limit frequency where outdoor temp angle value is interval for the 4th temperature range.
Fig. 8 is the structural representation of running frequency determining module in Fig. 5.
As shown in figure 8, running frequency determining module 500 includes limit in frequency converting air-conditioner compressor control device shown in Fig. 5 The interval detection unit 510 of frequency and frequency determinative elements 520.
The interval detection unit 510 of the limit frequency be used to detect the input voltage value where predeterminated voltage limit frequency it is interval with And the preset temperature limit frequency interval where the outdoor temp angle value.
It is pre- where the predeterminated voltage where detecting the input voltage value limits frequently interval and described outdoor temp angle value If temperature limit frequency is interval, predeterminated voltage limit frequency where can determine whether input voltage value it is interval between normal working zone, frequency limit System interval, frequency fixed interval or interval out of service, while the preset temperature limit frequency where can determine whether outdoor temp angle value is interval It is the first temperature range, interval second temperature, the 3rd temperature range or the 4th temperature range, according to judged result, mutually should determine that The running frequency of compressor, for example, whether the predeterminated voltage limit frequency interval where first judging the input voltage value is normal fortune Row is interval.
It is normal fortune that the frequency determinative elements are used for 520 in the predeterminated voltage limit frequency interval where the input voltage value When row is interval, the actual motion frequency of compressor is automatically adjusted according to default compressor operating rule；In the input voltage When predeterminated voltage limit frequency interval where value is frequency fixed interval, the actual motion frequency for determining frequency converting air-conditioner compressor is institute The reference running frequency corresponding to preset temperature limit frequency interval where stating outdoor temp angle value；Where the input voltage value When predeterminated voltage limit frequency interval is for frequency limit interval, the preset temperature limit frequency interval institute where calling the outdoor temp angle value is right Pre- limit frequent rate computing formula and the default frequency of amendment computing formula answered, calculate the frequent rate of limit and amendment frequency of compressor Rate, the actual motion frequency for determining compressor be the frequent rate of the limit with the frequency of amendment and；In the input voltage value When the predeterminated voltage limit frequency interval at place is out of service interval, the actual motion frequency for determining frequency converting air-conditioner compressor is zero.
When the predeterminated voltage limit frequency interval where judging the input voltage value is between normal working zone, illustrate now The AC-input voltage of convertible frequency air-conditioner allows compressor to be run according to normal operating frequency, is not limited by AC-input voltage, has Body can run according to default compressor operating mode, and for example compressor first runs according to specified maximum running frequency, works as detection When reaching preset temperature threshold values (such as 26 DEG C) to the temperature of convertible frequency air-conditioner internal power device, under the running frequency of compressor is automatic Drop to a certain predeterminated frequency less than specified maximum running frequency, when the temperature for detecting convertible frequency air-conditioner internal power device again When reaching preset temperature threshold values, the running frequency of compressor is automatically lowered another predeterminated frequency, by that analogy, compressor it is upper State Frequency Conversion Theory and be known in the art general knowledge, here is omitted.
The present invention refers to running frequency according to the interval correspondence default of each preset temperature limit frequency, specifically, according to first Temperature range correspondence preset first reference running frequency (such as 45Hz), according to the interval correspondence preset second reference operation of second temperature Frequency (such as 35Hz), according to the 3rd temperature range correspondence the default 3rd with reference to running frequency (such as 30Hz), according to the 4th humidity province Between correspondence the default 4th with reference to running frequency (such as 20Hz).
When the predeterminated voltage limit frequency interval where judging the input voltage value is for frequency fixed interval, illustrate now The AC-input voltage of convertible frequency air-conditioner allows the compressor to be with the reference running frequency that a certain preset temperature is limited corresponding to frequency interval Fixed frequency is run.Specifically, when it is the first temperature range that the preset temperature limit frequency where the outdoor temp angle value is interval, really The actual motion frequency of frequency converting air-conditioner compressor is determined for first refers to running frequency；Default temperature where the outdoor temp angle value Degree limit frequency it is interval for second temperature it is interval when, determine the actual motion frequency of frequency converting air-conditioner compressor for second with reference to operation frequency Rate；When it is three temperature ranges that the preset temperature limit frequency where the outdoor temp angle value is interval, frequency converting air-conditioner compressor is determined Actual motion frequency refer to running frequency for the 3rd；It is the 4th when the preset temperature limit frequency where the outdoor temp angle value is interval During temperature range, determine the actual motion frequency of frequency converting air-conditioner compressor for the 4th refers to running frequency.
When the predeterminated voltage limit frequency where judging the input voltage value is interval interval for frequency limit, illustrate working as Under preceding AC-input voltage and outdoor environment temperature, the running frequency of compressor should be limited, reduce the operation of compressor frequently Rate.
Specifically, in the case of the interval interval for frequency limit of predeterminated voltage limit frequency where the input voltage value, If the preset temperature limit frequency interval where the outdoor temp angle value is the first temperature range, call corresponding to the first temperature range The frequent rate computing formula of default first limit, calculate the first frequent rate Fv1 of limit, call default the corresponding to the first temperature range One frequency of amendment computing formula, calculates the first frequency of amendment △ Fv1, determines that the actual motion frequency of compressor is the described first limit Frequent rate and first frequency of amendment and.
The present embodiment preferably presets the first frequent rate computing formula of limit：
Fv1=Fref1.
First frequency of amendment computing formula is：
△ Fv1=[Fd1/ (Vmax-Vmin)] * (U-Vmin).
Wherein, Fref1 refers to running frequency for above-mentioned first, and Fd1 is first corresponding to default first temperature range Frequency correction value (such as 5Hz), the input voltage value that U is obtained by the current AC-input voltage of collection, Vmax is frequency limit area Between maximum input voltage value, Vmin is the interval minimum input voltage value of frequency limit.So as to where input voltage value It is the first humidity province that the interval preset temperature limit frequency where frequency limit interval and outdoor temp angle value of predeterminated voltage limit frequency is interval Between when, adjust compressor actual motion frequency be：
F=Fv1+ △ Fv1.
If the preset temperature limit frequency interval where the outdoor temp angle value is for second temperature interval, second temperature is called The frequent rate computing formula of default second limit corresponding to interval, calculates the second frequent rate of limit, calls second temperature interval corresponding Default second frequency of amendment computing formula, calculate the second frequency of amendment, determine that the actual motion frequency of compressor is described the The two frequent rates of limit and second frequency of amendment and.
The present embodiment preferably presets the second frequent rate computing formula of limit：
Fv2=(Fref1-Fref2)/(T2-T1) * (T2-T)+Fref2.
Second frequency of amendment computing formula is：
△ Fv2=[Fd2/ (Vmax-Vmin)] * (U-Vmin).
Wherein, Fref2 refers to running frequency for above-mentioned second, and Fd2 is second corresponding to default second temperature interval Frequency correction value (such as 5Hz), T is to gather the outdoor temp angle value that current outdoor environment temperature is obtained, and T2 is the 3rd temperature range Minimum outdoor temperature value, T1 is the maximum outdoor temp angle value of the first temperature range.So as to when default where input voltage value When preset temperature limit frequency interval of the voltage limit frequency interval where frequency limit interval and outdoor temp angle value is for second temperature interval, Adjust compressor actual motion frequency be：
F=Fv2+ △ Fv2.
If the preset temperature limit frequency interval where the outdoor temp angle value is for three temperature ranges, the 3rd temperature is called The frequent rate computing formula of default 3rd limit corresponding to interval, calculates the 3rd frequent rate of limit, calls corresponding to the 3rd temperature range Default 3rd frequency of amendment computing formula, calculate the 3rd frequency of amendment, determine that the actual motion frequency of compressor is described the The three frequent rates of limit and the 3rd frequency of amendment and.
The present embodiment preferably presets the 3rd frequent rate computing formula of limit：
Fv3=(Fref2-Fref3)/(T3-T2) * (T3-T)+Fref3.
3rd frequency of amendment computing formula is：
△ Fv3=[Fd3/ (Vmax-Vmin)] * (U-Vmin).
Wherein, Fref3 refers to running frequency for the above-mentioned 3rd, and Fd3 is the 3 corresponding to default 3rd temperature range Frequency correction value (such as 5Hz), T3 is the minimum outdoor temperature value of the 4th temperature range.So as to when pre- where input voltage value If it is the 3rd temperature range that the interval preset temperature limit frequency where frequency limit interval and outdoor temp angle value of voltage limit frequency is interval When, the actual motion frequency for adjusting compressor is：
F=Fv3+ △ Fv3.
If the preset temperature limit frequency interval where the outdoor temp angle value is for four temperature ranges, the 4th temperature is called The frequent rate computing formula of default 4th limit corresponding to interval, calculates the 4th frequent rate of limit, calls corresponding to the 4th temperature range Default 4th frequency of amendment computing formula, calculate the 4th frequency of amendment, determine that the actual motion frequency of compressor is described the The four frequent rates of limit and the 4th frequency of amendment and.
The present embodiment preferably presets the 4th frequent rate computing formula of limit：
Fv4=Fref4.
4th frequency of amendment computing formula is：
△ Fv4=0.
Wherein, Fref4 refers to running frequency for the above-mentioned 4th.So as to when the predeterminated voltage where input voltage value limits frequency When the interval preset temperature limit frequency interval where frequency limit interval and outdoor temp angle value is for four temperature ranges, compression is adjusted The actual motion frequency of machine is：
F=Fv4+ △ Fv4=Fv4.
So as to so that compressor is with the above-mentioned 4th with reference to running frequency as fixed frequency operation.
When the predeterminated voltage limit frequency interval where judging the input voltage value is not interval frequency limit, can determine whether Predeterminated voltage limit frequency interval where the input voltage value is interval out of service, is illustrated in current AC-input voltage Under, compressor should be out of service, so as to the actual motion frequency that can determine that frequency converting air-conditioner compressor is zero, to control compressor It is out of service, it is to avoid the compressor of convertible frequency air-conditioner and other parts damages.
The present invention also provides a kind of convertible frequency air-conditioner, and the convertible frequency air-conditioner includes above-mentioned frequency converting air-conditioner compressor control device, should The structure of frequency converting air-conditioner compressor control device and the beneficial effect reference above-described embodiment for being brought, no longer go to live in the household of one's in-laws on getting married herein State.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the invention, every utilization is not thereby limited Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations Technical field, be included within the scope of the present invention.

Claims (8)

1. a kind of frequency converting air-conditioner compressor control method, it is characterised in that the frequency converting air-conditioner compressor control method include with Lower step：
The current AC-input voltage of collection convertible frequency air-conditioner, obtains current input voltage value；
According to acquired input voltage value, the predeterminated voltage limit frequency where determining the input voltage value is interval；
The current outdoor environment temperature of collection, obtains current outdoor temp angle value；
According to acquired outdoor temp angle value, the preset temperature limit frequency where determining the outdoor temp angle value is interval；
Predeterminated voltage limit frequency according to where the input voltage value is interval and the outdoor temp angle value where preset temperature Limit frequency is interval, determines the actual motion frequency of frequency converting air-conditioner compressor；
Input voltage value acquired in the basis, the step in the predeterminated voltage limit frequency interval where determining the input voltage value Including：
The acquired input voltage value of detection is interval with predeterminated voltage limit frequency；
When the corresponding voltage range between default normal working zone of the input voltage value, the input voltage is determined Predeterminated voltage limit frequency where value is interval between normal working zone；
When the input voltage value be in default frequency limit interval corresponding to voltage range when, determine the input voltage Predeterminated voltage limit frequency where value is interval for frequency limit is interval；
When the input voltage value be in default frequency fixed interval corresponding to voltage range when, determine the input voltage Predeterminated voltage limit frequency where value is interval for frequency fixed interval；
When the input voltage value be in it is default it is out of service interval corresponding to voltage range when, determine the input voltage Predeterminated voltage limit frequency where value is interval for interval out of service；
Wherein, between the normal working zone, frequency limit interval, frequency fixed interval, the voltage corresponding to interval out of service Reduce successively.
2. frequency converting air-conditioner compressor control method as claimed in claim 1, it is characterised in that the outdoor acquired in the basis Temperature value, the step in the preset temperature limit frequency interval where determining the outdoor temp angle value includes：
The acquired outdoor temp angle value of detection is interval with preset temperature limit frequency；
When the outdoor temp angle value be in default first temperature range corresponding to temperature range when, determine the outdoor temperature Preset temperature limit frequency where value is interval for the first temperature range；
When the outdoor temp angle value be in default second temperature interval corresponding to temperature range when, determine the outdoor temperature Preset temperature limit frequency where value is interval for second temperature is interval；
When the outdoor temp angle value be in default 3rd temperature range corresponding to temperature range when, determine the outdoor temperature Preset temperature limit frequency where value is interval for the 3rd temperature range；
When the outdoor temp angle value be in default 4th temperature range corresponding to temperature range when, determine the outdoor temperature Preset temperature limit frequency where value is interval for the 4th temperature range；
Wherein, first temperature range, second temperature interval, the temperature corresponding to the 3rd temperature range, the 4th temperature range Raise successively.
3. the frequency converting air-conditioner compressor control method as described in any one in claim 1 to 2, it is characterised in that described Preset temperature Xian Pin areas where limiting frequently interval and described outdoor temp angle value according to the predeterminated voltage where the input voltage value Between, include the step of the actual motion frequency for determining frequency converting air-conditioner compressor：
Predeterminated voltage limit frequency where detecting the input voltage value is interval and the outdoor temp angle value where preset temperature Limit frequency is interval；
When it is between normal working zone that the predeterminated voltage limit frequency where the input voltage value is interval, transported according to default compressor Line discipline automatically adjusts the actual motion frequency of compressor；
When it is frequency fixed interval that the predeterminated voltage limit frequency where the input voltage value is interval, frequency converting air-conditioner compressor is determined Actual motion frequency be where the outdoor temp angle value preset temperature limit frequency interval corresponding to reference running frequency；
When the predeterminated voltage limit frequency where the input voltage value is interval interval for frequency limit, the outdoor temp angle value is called Pre- limit frequent rate computing formula and default frequency of amendment computing formula corresponding to the preset temperature limit frequency interval at place, meter The frequent rate of limit and frequency of amendment of compressor are calculated, determines that the actual motion frequency of compressor is the frequent rate of limit and the amendment The sum of frequency；
When it is out of service interval that the predeterminated voltage limit frequency where the input voltage value is interval, frequency converting air-conditioner compressor is determined Actual motion frequency be zero.
4. a kind of frequency converting air-conditioner compressor control device, it is characterised in that the frequency converting air-conditioner compressor control device includes handing over Stream voltage acquisition module, voltage limit frequency interval determination module, outdoor temperature acquisition module, temperature limit frequency interval determination module and fortune Line frequency determining module；
The AC voltage sampling module is used to gather the current AC-input voltage of convertible frequency air-conditioner, obtains current input voltage Value；
The voltage limit frequency interval determination module is used for the input voltage value according to acquired in the AC voltage sampling module, really Predeterminated voltage limit frequency where the fixed input voltage value is interval；
The outdoor temperature acquisition module is used to gather current outdoor environment temperature, obtains current outdoor temp angle value；
The temperature limit frequency interval determination module is used for the outdoor temp angle value according to acquired in the outdoor temperature acquisition module, really Preset temperature limit frequency where the fixed outdoor temp angle value is interval；
The predeterminated voltage limit frequency that the running frequency determining module is used for according to where the input voltage value is interval and described Preset temperature limit frequency where outdoor temp angle value is interval, determines the actual motion frequency of frequency converting air-conditioner compressor.
5. frequency converting air-conditioner compressor control device as claimed in claim 4, it is characterised in that the voltage limit frequency is interval to be determined Module includes voltage detection unit and voltage limit frequency interval determination unit；
The voltage detection unit is used to detect that acquired input voltage value is interval with predeterminated voltage limit frequency；
The voltage limit frequency interval determination unit is used for corresponding between default normal working zone in the input voltage value Voltage range when, the predeterminated voltage limit frequency where determining the input voltage value is interval between normal working zone；Described defeated When entering magnitude of voltage and being in the voltage range corresponding to default frequency limit interval, determine default where the input voltage value Voltage limit frequency is interval for frequency limit is interval；The voltage corresponding to default frequency fixed interval is in the input voltage value When interval, the predeterminated voltage limit frequency where determining the input voltage value is interval for frequency fixed interval；In the input voltage When value is in the voltage range corresponding to default interval out of service, the predeterminated voltage limit where determining the input voltage value It is interval out of service that frequency is interval；Wherein, between the normal working zone, frequency limit interval, frequency fixed interval, out of service Voltage corresponding to interval is reduced successively.
6. frequency converting air-conditioner compressor control device as claimed in claim 4, it is characterised in that the temperature limit frequency is interval to be determined Module includes temperature detecting unit and temperature limit frequency interval determination unit；
The temperature detecting unit is used to detect that acquired outdoor temp angle value is interval with preset temperature limit frequency；
The temperature limit frequency interval determination unit is used to be in corresponding to default first temperature range in the outdoor temp angle value Temperature range when, it is the first temperature range that preset temperature limit frequency where determining the outdoor temp angle value is interval；In the room When outer temperature value is in the temperature range corresponding to default second temperature interval, determine default where the outdoor temp angle value Temperature limit frequency is interval for second temperature is interval；The temperature corresponding to default 3rd temperature range is in the outdoor temp angle value When interval, the preset temperature limit frequency where determining the outdoor temp angle value is interval for the 3rd temperature range；In the outdoor temperature When value is in the temperature range corresponding to default 4th temperature range, the preset temperature limit where determining the outdoor temp angle value It is the 4th temperature range that frequency is interval；Wherein, first temperature range, second temperature interval, the 3rd temperature range, the 4th temperature Temperature corresponding to interval is raised successively.
7. the frequency converting air-conditioner compressor control device as described in any one in claim 4 to 6, it is characterised in that the fortune Line frequency determining module includes the interval detection unit of limit frequency and frequency determinative elements；
Predeterminated voltage limit frequency where the interval detection unit of limit frequency is used to detect the input voltage value is interval and described Preset temperature limit frequency where outdoor temp angle value is interval；
Between the frequency determinative elements in the predeterminated voltage limit frequency interval where the input voltage value for being normal working zone When, the actual motion frequency of compressor is automatically adjusted according to default compressor operating rule；Where the input voltage value Predeterminated voltage limit frequency it is interval for frequency fixed interval when, the actual motion frequency for determining frequency converting air-conditioner compressor is the outdoor The reference running frequency corresponding to preset temperature limit frequency interval where temperature value；In the default electricity where the input voltage value Pressure limit frequency it is interval for frequency limit it is interval when, it is pre- corresponding to the preset temperature limit frequency interval where calling the outdoor temp angle value Frequent rate computing formula of limiting and default frequency of amendment computing formula, calculate the frequent rate of limit and frequency of amendment of compressor, really The actual motion frequency for determining compressor be the frequent rate of the limit with the frequency of amendment and；Where the input voltage value When predeterminated voltage limit frequency interval is out of service interval, the actual motion frequency for determining frequency converting air-conditioner compressor is zero.
8. a kind of convertible frequency air-conditioner, it is characterised in that the convertible frequency air-conditioner includes the change described in any one in claim 4 to 7 Frequency compressor of air conditioner control device.
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