CN105546754A - Temperature controlling method and device for converter and air conditioning - Google Patents
Temperature controlling method and device for converter and air conditioning Download PDFInfo
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- CN105546754A CN105546754A CN201610009099.0A CN201610009099A CN105546754A CN 105546754 A CN105546754 A CN 105546754A CN 201610009099 A CN201610009099 A CN 201610009099A CN 105546754 A CN105546754 A CN 105546754A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Mathematical Physics (AREA)
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- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a temperature controlling method for a converter. The temperature controlling method comprises the following steps: when detecting that the temperature of the converter is larger than or equal to a first preset temperature, acquiring a current first working frequency of a compressor; when the first working frequency is larger than or equal to a first preset frequency, lowering the working frequency of the compressor; and when detecting that the temperature of the converter is smaller than or equal to a second preset temperature, recovering the working frequency of the compressor from the lowered second working frequency to the first working frequency, wherein the first preset temperature is larger than the second preset temperature. The invention also discloses a temperature controlling device for the converter and an air conditioning. The temperature controlling method, the temperature controlling device and the air conditioning reduce the workload of the converter by lowering the working frequency of the compressor, so that the heat produced when the converter works is reduced, the purpose of cooling the converter is reached, and normal work of an air conditioning system is ensured.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of temperature-controlled process of frequency converter, device and air-conditioning.
Background technology
Convertible frequency air-conditioner is in the structure of conventional air-conditioning, add a frequency converter, frequency converter is connected with the heart compressor of air-conditioning, be used for the operating frequency of controlling and adjustment compressor or rotating speed, and then make compressor be in best running status all the time, thus improve Energy Efficiency Ratio.
At present, when the work of air-conditioning system, if the operating frequency of compressor is higher, then the live load of frequency converter is corresponding comparatively large, and the heat produced during the work of frequency converter is more, cause the temperature of frequency converter corresponding higher, meanwhile, when the temperature of frequency converter is too high, the work efficiency drop of frequency converter, affect the operating efficiency of compressor, thus affect the normal work of air-conditioning system.
Summary of the invention
The invention provides a kind of temperature-controlled process of frequency converter, device and air-conditioning, it is too high and affect the technical problem that air-conditioning system normally works to be intended to solve the temperature of frequency converter.
For achieving the above object, the temperature-controlled process of a kind of frequency converter provided by the invention, the temperature-controlled process of described frequency converter comprises the following steps:
When detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtain the first operating frequency that compressor is current;
When described first operating frequency is more than or equal to the first predeterminated frequency, reduce the operating frequency of described compressor;
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, wherein, described first preset temperature is greater than the second preset temperature.
Preferably, after the step of the operating frequency of the described compressor of described reduction, the temperature-controlled process of described frequency converter also comprises:
The temperature of described frequency converter is detected after reducing the operating frequency prefixed time interval of described compressor;
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, perform described by the operating frequency of described compressor by the second operating frequency after reducing to the step returning to described first operating frequency;
When detecting that the temperature of frequency converter is greater than the second preset temperature, perform the step of the operating frequency reducing described compressor.
Preferably, when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, after obtaining the step of the first current operating frequency of compressor, the temperature-controlled process of described frequency converter also comprises:
When described first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, wherein, described first predeterminated frequency is more than or equal to the second predeterminated frequency;
When described first rotating speed is less than preset rotation speed, increase the rotating speed of described blower fan, after increasing to make rotating speed, the second rotating speed of described blower fan is more than or equal to preset rotation speed;
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, recover rotating speed to the first rotating speed of described blower fan.
Preferably, the temperature-controlled process of described frequency converter also comprises:
When detecting that the temperature of described frequency converter is less than the 3rd preset temperature, determine whether the temperature of current outdoor environment is greater than default environment temperature, wherein, described 3rd preset temperature is less than described second preset temperature;
When the temperature of current outdoor environment is greater than default environment temperature, determine that whether described blower fan is in running order;
When described blower fan is in closed condition, run described blower fan.
In addition, for achieving the above object, the present invention also provides a kind of temperature control equipment of frequency converter, and the temperature control equipment of described frequency converter comprises:
Frequency acquisition module, for when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtains the first operating frequency that compressor is current;
Frequency reducing module, for when described first operating frequency is more than or equal to the first predeterminated frequency, reduces the operating frequency of described compressor;
Frequency retrieval module, for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, wherein, described first preset temperature is greater than the second preset temperature.
Preferably, the temperature control equipment of described frequency converter also comprises:
Detection module, for reducing the temperature detecting described frequency converter after the operating frequency prefixed time interval of described compressor;
Described frequency retrieval module also for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency;
Described frequency reducing module also for when detecting that the temperature of frequency converter is greater than the second preset temperature, reduces the operating frequency of described compressor.
Preferably, the temperature control equipment of described frequency converter also comprises:
Rotating speed acquisition module, for when described first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, wherein, described first predeterminated frequency is greater than the second predeterminated frequency;
Rotating speed increases module, for when described first rotating speed is less than preset rotation speed, increases the rotating speed of described blower fan, and after increasing to make rotating speed, the second rotating speed of described blower fan is more than or equal to preset rotation speed;
Rotating speed recovers module, for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, the rotating speed of described blower fan is returned to described first rotating speed by described second rotating speed.
Preferably, the temperature control equipment of described frequency converter also comprises:
Environment temperature determination module, for when detecting that the temperature of described frequency converter is less than the 3rd preset temperature, determines whether the temperature of current outdoor environment is greater than default environment temperature, and wherein, described 3rd preset temperature is less than described second preset temperature;
State determining module, for when the temperature of current outdoor environment is greater than default environment temperature, determines that whether described blower fan is in running order;
Run module, for when described blower fan is in closed condition, run described blower fan.
In addition, for achieving the above object, the present invention also provides a kind of air-conditioning, and described air-conditioning comprises the temperature control equipment of the frequency converter described in above-mentioned any one.
The present invention is by when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtain the first operating frequency of compressor, then when the first operating frequency is more than or equal to the first predeterminated frequency, reduce the operating frequency of compressor, then when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, the operating frequency achieved by reducing compressor reduces the live load of frequency converter, and then the heat produced when decreasing frequency converter work, reach the object for frequency converter cooling, and then ensure that the normal work of air-conditioning system.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of temperature-controlled process first embodiment of frequency converter of the present invention;
Fig. 2 is the schematic flow sheet of temperature-controlled process second embodiment of frequency converter of the present invention;
Fig. 3 is the schematic flow sheet of temperature-controlled process the 3rd embodiment of frequency converter of the present invention;
Fig. 4 is the high-level schematic functional block diagram of temperature control equipment first embodiment of frequency converter of the present invention;
Fig. 5 is the high-level schematic functional block diagram of temperature control equipment second embodiment of frequency converter of the present invention;
Fig. 6 is the high-level schematic functional block diagram of temperature control equipment the 3rd embodiment of frequency converter of the present invention;
Fig. 7 is the high-level schematic functional block diagram of temperature control equipment the 4th embodiment of frequency converter of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of temperature-controlled process of frequency converter.With reference to the schematic flow sheet that Fig. 1, Fig. 1 are temperature-controlled process first embodiment of frequency converter of the present invention.
In the present embodiment, the temperature-controlled process of this frequency converter comprises:
Step S10, when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtains the first operating frequency that compressor is current;
In the present embodiment, frequency converter is provided with temperature sensor, air-conditioning system detects the temperature of frequency converter in real time by this temperature sensor, first preset temperature is the default maximum temperature of default frequency converter, such as the first preset temperature is set to 75 DEG C, when the temperature of frequency converter exceedes high 75 DEG C, may affect the normal work of frequency converter, and then affect the operating efficiency of compressor, cause the normal work that cannot ensure air-conditioning system.
Step S20, when described first operating frequency is more than or equal to the first predeterminated frequency, reduces the operating frequency of described compressor;
Wherein, first predeterminated frequency be the temperature of frequency converter too high time compressor maximum operation frequency, when the operating frequency that compressor is current is more than or equal to the first predeterminated frequency, the live load of compressor and frequency converter can be reduced by the operating frequency reducing compressor, reduce the electric current flowing through this frequency converter, by reducing the heat release of frequency converter, and then be embodied as frequency converter cooling, easy understand, the operating frequency of compressor can be reduced predeterminated frequency value, namely after reduction operating frequency, the operating frequency of compressor is the first work frequency-predeterminated frequency value, wherein predeterminated frequency value can be arranged accordingly according to the performance of air-conditioning, certainly, in the present embodiment, the rotating speed of blower fan can be increased simultaneously, to improve the heat radiation of air-conditioning system radiating module, and then accelerate the cooling of frequency converter.
Step S30, when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, wherein, described first preset temperature is greater than the second preset temperature.
Wherein, second operating frequency is the operating frequency of compressor after reduction frequency, second preset temperature is the maximum of frequency converter temperature when normally working, such as the second preset temperature is set to 72 DEG C, if the temperature of frequency converter is lower than 72 DEG C, the normal work of frequency converter can be ensured, certainly, in the present embodiment, when the temperature of frequency converter is less than or equal to 72 DEG C, illustrate that frequency converter is lowered the temperature successfully, then by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, even if compressor is still according to the first operating frequency work, to ensure the normal work of air-conditioning system, in the present embodiment, adopt temperature frequency converter being detected in real time, as long as detect that the temperature of frequency converter is less than or equal to the second preset temperature, then illustrate that frequency converter is lowered the temperature successfully, then by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, normally work to make air-conditioning system.
Further, in the present embodiment, after step S20, the temperature-controlled process of this frequency converter also comprises:
The temperature of described frequency converter is detected after reducing the operating frequency prefixed time interval of described compressor;
Wherein, prefixed time interval can be arranged according to the performance of air-conditioning, for example prefixed time interval is set to 5 minutes, in the present embodiment, can reduce at compressor the temperature detecting frequency converter after operating frequency runs prefixed time interval, also can detect the temperature of frequency converter in real time and obtain the temperature that compressor reduces the frequency converter detected when operating frequency runs prefixed time interval.
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, perform described by the operating frequency of described compressor by the second operating frequency after reducing to the step returning to described first operating frequency;
Wherein, the second preset temperature is the maximum of frequency converter temperature when normally working, and such as the second preset temperature is set to 72 DEG C.When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, illustrate that now frequency converter is lowered the temperature successfully, therefore by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, normally work to make air-conditioning system.
When detecting that the temperature of frequency converter is greater than the second preset temperature, perform the step of the operating frequency reducing described compressor.
If reduce after operating frequency runs prefixed time interval at compressor and detect that the temperature of frequency converter is greater than the second preset temperature, namely compressor reduce operating frequency continuous service prefixed time interval after the temperature of frequency converter be still greater than the second preset temperature, then illustrate that the temperature of frequency converter does not still reach the temperature range of default normal work, namely the cooling efficiency of frequency converter is lower, therefore, continue to reduce the current operating frequency of compressor, to reduce the temperature of frequency converter fast, ensure the normal work of frequency converter.In the present embodiment, operating frequency current for compressor can be reduced predeterminated frequency value, namely frequency reduces the operating frequency of rear compressor is the first work-2* predeterminated frequency value frequently, operating frequency current for compressor can certainly be reduced fixed frequency value, high fixed frequency value is different from predeterminated frequency value, and namely frequency reduces the operating frequency of rear compressor is first work frequency-predeterminated frequency value-fixed frequency value.After again reducing the operating frequency of compressor, continue the step detecting the temperature of described frequency converter after execution reduces the operating frequency prefixed time interval of described compressor, namely judge further compressor again reduce operating frequency operation prefixed time interval after the temperature of frequency converter when whether being less than or equal to the second preset temperature, if whether the temperature of frequency converter is less than or equal to the second preset temperature, illustrate that frequency converter is lowered the temperature successfully, and then by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, if whether the temperature of frequency converter is greater than the second preset temperature, then reduce the operating frequency of compressor again, the temperature reducing frequency converter is fast realized by the cycling of the present embodiment.The present embodiment achieve compressor reduce operating frequency run that the temperature of frequency converter is greater than the second preset temperature after prefixed time interval time, continue to reduce the current operating frequency of compressor, the live load of further reduction frequency converter, the heat produced when reducing frequency converter work, and then be reached for the object of frequency converter cooling.
In the present embodiment, by when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtain the first operating frequency of compressor, then when the first operating frequency is more than or equal to the first predeterminated frequency, reduce the operating frequency of compressor, then when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, the operating frequency achieved by reducing compressor reduces the live load of frequency converter, and then the heat produced when decreasing frequency converter work, reach the object for frequency converter cooling, and then ensure that the normal work of air-conditioning system.
Propose the second embodiment of the temperature-controlled process of frequency converter of the present invention based on the first embodiment, with reference to Fig. 2, in the present embodiment, after step slo, the temperature-controlled process of this frequency converter also comprises:
Step S40, when described first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, wherein, described first predeterminated frequency is greater than the second predeterminated frequency;
Wherein, second predeterminated frequency is the minimum running frequency critical value of compressor, when the operating frequency of compressor is less than or equal to the second predeterminated frequency, show that compressor is current and cannot reduce operating frequency again, otherwise compressor may quit work, therefore now can obtain the first current rotating speed of blower fan, be improved the radiating efficiency of air-conditioning system by the rotating speed improving blower fan, and then be reached for the effect of frequency converter cooling.
Step S50, when described first rotating speed is less than preset rotation speed, increases the rotating speed of described blower fan, and after increasing to make rotating speed, the second rotating speed of described blower fan is more than or equal to preset rotation speed;
Wherein, preset rotation speed can be arranged according to the performance etc. of current air-conditioning system, and the second rotating speed is that rotating speed increases the current rotating speed of rear fan.When the first rotating speed is less than preset rotation speed, increase the rotating speed of described blower fan, to make the rotating speed of described blower fan be more than or equal to preset rotation speed, the rotating speed namely limiting blower fan is greater than preset rotation speed, and then improve the radiating effect of radiating module, reach the object reducing frequency converter temperature.
Step S60, when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, returns to described first rotating speed by the rotating speed of described blower fan by described second rotating speed.
Second preset temperature is the maximum of frequency converter temperature when normally working, if the temperature of frequency converter is lower than this second preset temperature, the normal work of frequency converter can be ensured, certainly, when the temperature of frequency converter is less than or equal to the second preset temperature, the rotating speed of blower fan is returned to the first rotating speed by the second rotating speed, normally works to make air-conditioning system.
The present embodiment is by when the first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, then when the first rotating speed is less than preset rotation speed, increase the rotating speed of blower fan, last when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, the rotating speed of blower fan is returned to the first rotating speed by the second rotating speed, the radiating effect of air-conditioning system radiating module is improved by the rotating speed increasing blower fan, and then improve the radiating effect of frequency converter, be reached for the object of frequency converter cooling, to ensure the normal work of air-conditioning system.
Propose the 3rd embodiment of the temperature-controlled process of frequency converter of the present invention based on the first embodiment, with reference to Fig. 3, in the present embodiment, the temperature-controlled process of this frequency converter also comprises:
Step S70, when detecting that the temperature of described frequency converter is less than the 3rd preset temperature, determines whether the temperature of current outdoor environment is greater than default environment temperature, and wherein, described 3rd preset temperature is less than described second preset temperature;
Wherein, 3rd preset temperature is much smaller than the second preset temperature, there will not be the temperature of frequency converter to be less than the situation of the 3rd preset temperature when frequency converter normally runs, therefore, if detect, the temperature of described frequency converter is less than the 3rd preset temperature, and the abnormality of temperature sensors of frequency converter is described.
Step S80, when the temperature of current outdoor environment is greater than default environment temperature, determines that whether described blower fan is in running order;
If the temperature of current outdoor environment is greater than default environment temperature, then illustrating that the actual temperature of frequency converter may be too high, can be therefore frequency converter cooling by blower fan, so first determine the duty of blower fan.
Step S90, when described blower fan is not in running order, runs described blower fan.
Because the temperature of air-conditioning system current outdoor environment is greater than default environment temperature, the temperature of frequency converter therefore may be caused too high and affect the normal work of air-conditioning system, therefore, the heat radiation accelerating air-conditioning system by running blower fan guarantees that the temperature of frequency converter is normal.In the present embodiment, can timing operation blower fan, namely make fan operation a period of time at interval of Preset Time, can certainly continuous service blower fan, or continuous service blower fan increases at interval of Preset Time or reduces the rotating speed etc. of blower fan.
The present embodiment is by when detecting that the temperature of frequency converter is less than the 3rd preset temperature, determine whether the temperature of current outdoor environment is greater than default environment temperature, then when the temperature of current outdoor environment is greater than default environment temperature, determine that whether blower fan is in running order, then when blower fan is in closed condition, run blower fan, achieve the temperature being reduced frequency converter when the abnormality of temperature sensors of frequency converter by the operation blower fan at interval, to ensure the normal work of the air-conditioning system when the temperature of current outdoor environment is greater than default environment temperature.
The present invention further provides a kind of temperature control equipment of frequency converter.With reference to the high-level schematic functional block diagram that Fig. 4, Fig. 4 are temperature control equipment first embodiment of frequency converter of the present invention.
In the present embodiment, the temperature control equipment of this frequency converter comprises:
Frequency acquisition module 10, for when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtains the first operating frequency that compressor is current;
In the present embodiment, frequency converter is provided with temperature sensor, air-conditioning system detects the temperature of frequency converter in real time by this temperature sensor, first preset temperature is the default maximum temperature of default frequency converter, such as the first preset temperature is set to 75 DEG C, when the temperature of frequency converter exceedes high 75 DEG C, may affect the normal work of frequency converter, and then affect the operating efficiency of compressor, cause the normal work that cannot ensure air-conditioning system.Frequency reducing module 20, for when described first operating frequency is more than or equal to the first predeterminated frequency, reduces the operating frequency of described compressor;
Wherein, first predeterminated frequency be the temperature of frequency converter too high time compressor maximum operation frequency, when the operating frequency that compressor is current is more than or equal to the first predeterminated frequency, the operating frequency reduction compressor of compressor and the live load of frequency converter can be reduced by frequency reducing module 20, reduce the electric current flowing through this frequency converter, by reducing the heat release of frequency converter, and then be embodied as frequency converter cooling, easy understand, the operating frequency of compressor can be reduced predeterminated frequency value, namely after reduction operating frequency, the operating frequency of compressor is the first work frequency-predeterminated frequency value, wherein predeterminated frequency value can be arranged accordingly according to the performance of air-conditioning, certainly, in the present embodiment, the rotating speed of blower fan can be increased simultaneously, to improve the heat radiation of air-conditioning system radiating module, and then accelerate the cooling of frequency converter.
Frequency retrieval module 30, for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, recovers operating frequency to the first operating frequency of described compressor, and wherein, described first preset temperature is more than or equal to the second preset temperature.
Wherein, second operating frequency is the operating frequency of compressor after reduction frequency, second preset temperature is the maximum of frequency converter temperature when normally working, such as the second preset temperature is set to 72 DEG C, if the temperature of frequency converter is lower than 72 DEG C, the normal work of frequency converter can be ensured, certainly, in the present embodiment, when the temperature of frequency converter is less than or equal to 72 DEG C, illustrate that frequency converter is lowered the temperature successfully, then frequency retrieval module 30 by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, even if compressor is still according to the first operating frequency work, to ensure the normal work of air-conditioning system, in the present embodiment, adopt temperature frequency converter being detected in real time, as long as detect that the temperature of frequency converter is less than or equal to the second preset temperature, then illustrate that frequency converter is lowered the temperature successfully, then frequency retrieval module 30 by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, normally work to make air-conditioning system.
In the present embodiment, by when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, frequency acquisition module 10 obtains the first operating frequency of compressor, then when the first operating frequency is more than or equal to the first predeterminated frequency, frequency reducing module 20 reduces operating frequency to the second operating frequency of compressor, then when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, frequency retrieval module 30 by the operating frequency of compressor by the second operating frequency after reducing to returning to the first operating frequency, the operating frequency achieved by reducing compressor reduces the live load of frequency converter, and then the heat produced when decreasing frequency converter work, reach the object for frequency converter cooling, and then ensure that the normal work of air-conditioning system.
Propose the second embodiment of the temperature control equipment of frequency converter of the present invention based on the first embodiment, with reference to Fig. 5, in the present embodiment, the temperature control equipment of this frequency converter also comprises:
Detection module 40, for reducing the temperature detecting described frequency converter after the operating frequency prefixed time interval of described compressor;
Wherein, prefixed time interval can be arranged according to the performance of air-conditioning, for example prefixed time interval is set to 5 minutes, in the present embodiment, can reduce at compressor the temperature detecting frequency converter after operating frequency runs prefixed time interval, also can detect the temperature of frequency converter in real time and obtain the temperature that compressor reduces the frequency converter detected when operating frequency runs prefixed time interval.
Described frequency retrieval module 30 also for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency;
Wherein, the second preset temperature is the maximum of frequency converter temperature when normally working, and such as the second preset temperature is set to 72 DEG C.When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, illustrate that now frequency converter is lowered the temperature successfully, therefore frequency retrieval module 30 by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, normally work to make air-conditioning system.
Described frequency reducing module 20 also for when detecting that the temperature of frequency converter is greater than the second preset temperature, reduces the operating frequency of described compressor.
If reduce after operating frequency runs prefixed time interval at compressor and detect that the temperature of frequency converter is greater than the second preset temperature, namely compressor reduce operating frequency continuous service prefixed time interval after the temperature of frequency converter be still greater than the second preset temperature, then illustrate that the temperature of frequency converter does not still reach the temperature range of default normal work, namely the cooling efficiency of frequency converter is lower, therefore, continue to reduce the current operating frequency of compressor by frequency reducing module 20, to reduce the temperature of frequency converter fast, ensure the normal work of frequency converter.In the present embodiment, operating frequency current for compressor can be reduced predeterminated frequency value, namely frequency reduces the operating frequency of rear compressor is the first work-2* predeterminated frequency value frequently, operating frequency current for compressor can certainly be reduced fixed frequency value, high fixed frequency value is different from predeterminated frequency value, and namely frequency reduces the operating frequency of rear compressor is first work frequency-predeterminated frequency value-fixed frequency value.After again reducing the operating frequency of compressor, continue the step detecting the temperature of described frequency converter after execution reduces the operating frequency prefixed time interval of described compressor, namely judge further compressor again reduce operating frequency operation prefixed time interval after the temperature of frequency converter when whether being less than or equal to the second preset temperature, if whether the temperature of frequency converter is less than or equal to the second preset temperature, illustrate that frequency converter is lowered the temperature successfully, and then by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, if whether the temperature of frequency converter is greater than the second preset temperature, then frequency reducing module 20 reduces the operating frequency of compressor again, the temperature reducing frequency converter is fast realized by the cycling of the present embodiment.
The present embodiment detects the temperature of frequency converter by detection module 40 after the operating frequency prefixed time interval of reduction compressor, then when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, frequency retrieval module 30 by the operating frequency of compressor by the second operating frequency after reducing to returning to described first operating frequency, when detecting that the temperature of frequency converter is greater than the second preset temperature, frequency reducing module 20 reduces the operating frequency of compressor, achieve compressor reduce operating frequency run that the temperature of frequency converter is greater than the second preset temperature after prefixed time interval time, continue to reduce the current operating frequency of compressor, the live load of further reduction frequency converter, the heat produced when reducing frequency converter work, and then be reached for the object of frequency converter cooling.
Propose the 3rd embodiment of the temperature control equipment of frequency converter of the present invention based on the first embodiment, with reference to Fig. 6, in the present embodiment, the temperature control equipment of this frequency converter also comprises:
Rotating speed acquisition module 50, for when described first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, wherein, described first predeterminated frequency is more than or equal to the second predeterminated frequency;
Wherein, second predeterminated frequency is the minimum running frequency critical value of compressor, when the operating frequency of compressor is less than or equal to the second predeterminated frequency, show that compressor is current and cannot reduce operating frequency again, otherwise compressor may quit work, therefore now can be obtained the first rotating speed of blower fan by rotating speed acquisition module 50, be improved the radiating efficiency of air-conditioning system by the rotating speed improving blower fan, and then be reached for the effect of frequency converter cooling.
Rotating speed increases module 60, for when described first rotating speed is less than preset rotation speed, increases the rotating speed of described blower fan, and after increasing to make rotating speed, the second rotating speed of described blower fan is more than or equal to preset rotation speed;
Wherein, preset rotation speed can be arranged according to the performance etc. of current air-conditioning system, and the second rotating speed is that rotating speed increases the current rotating speed of rear fan.When the first rotating speed is less than preset rotation speed, increase the rotating speed of described blower fan, to make the rotating speed of described blower fan be more than or equal to preset rotation speed, the rotating speed namely limiting blower fan is greater than preset rotation speed, and then improve the radiating effect of radiating module, reach the object of the temperature reducing frequency converter.
Rotating speed recovers module 70, for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, the rotating speed of described blower fan is returned to described first rotating speed by described second rotating speed.
Second preset temperature is the maximum of frequency converter temperature when normally working, if the temperature of frequency converter is lower than this second preset temperature, the normal work of frequency converter can be ensured, certainly, when the temperature of frequency converter is less than or equal to the second preset temperature, rotating speed recovers module 70 and the rotating speed of blower fan is returned to the first rotating speed by the second rotating speed, normally works to make air-conditioning system.
The present embodiment is by when the first operating frequency is less than or equal to the second predeterminated frequency, rotating speed acquisition module 50 obtains the first current rotating speed of blower fan, then when the first rotating speed is less than preset rotation speed, rotating speed increases the rotating speed that module 60 increases blower fan, last when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, rotating speed recovers module 70 and the rotating speed of blower fan is returned to the first rotating speed by the second rotating speed, the radiating effect of air-conditioning system radiating module is improved by the rotating speed increasing blower fan, and then improve the radiating effect of frequency converter, be reached for the object of frequency converter cooling, to ensure the normal work of air-conditioning system.
Propose the 4th embodiment of the temperature control equipment of frequency converter of the present invention based on the first embodiment, with reference to Fig. 7, in the present embodiment, the temperature control equipment of this frequency converter also comprises:
Environment temperature determination module 80, for when detecting that the temperature of described frequency converter is less than the 3rd preset temperature, determines whether the temperature of current outdoor environment is greater than default environment temperature, and wherein, described 3rd preset temperature is less than described second preset temperature;
Wherein, 3rd preset temperature is much smaller than the second preset temperature, there will not be the temperature of frequency converter to be less than the situation of the 3rd preset temperature when frequency converter normally runs, therefore, if detect, the temperature of described frequency converter is less than the 3rd preset temperature, and the abnormality of temperature sensors of frequency converter is described.
State determining module 90, for when the temperature of current outdoor environment is greater than default environment temperature, determines that whether described blower fan is in running order;
If the temperature of current outdoor environment is greater than default environment temperature, then illustrating that the actual temperature of frequency converter may be too high, can be therefore frequency converter cooling by blower fan, so first determined the duty of blower fan by state determining module 80.
Run module 100, for when described blower fan is in closed condition, run described blower fan.
Because the temperature of air-conditioning system current outdoor environment is greater than default environment temperature, therefore the temperature of frequency converter may be caused too high and affect the normal work of air-conditioning system, therefore, the heat radiation running blower fan acceleration air-conditioning system by running module 90 guarantees that the temperature of frequency converter is normal.In the present embodiment, running module 90 can timing operation blower fan, namely make fan operation a period of time at interval of Preset Time, certainly running module 90 also can continuous service blower fan, or continuous service blower fan increases at interval of Preset Time or reduces the rotating speed etc. of blower fan.
The present embodiment is by when detecting that the temperature of frequency converter is less than the 3rd preset temperature, environment temperature determination module 80 determines whether the temperature of current outdoor environment is greater than default environment temperature, then when the temperature of current outdoor environment is greater than default environment temperature, state determining module 90 determines that whether blower fan is in running order, then when blower fan is in closed condition, run module 100 and run blower fan, achieve the temperature being reduced frequency converter when the abnormality of temperature sensors of frequency converter by the operation blower fan at interval, to ensure the normal work of the air-conditioning system when the temperature of current outdoor environment is greater than default environment temperature.
The present invention further provides a kind of air-conditioning, in the present embodiment, this air-conditioning comprises the temperature control equipment of the frequency converter of above-mentioned any one embodiment.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a temperature-controlled process for frequency converter, is characterized in that, the temperature-controlled process of described frequency converter comprises the following steps:
When detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtain the first operating frequency that compressor is current;
When described first operating frequency is more than or equal to the first predeterminated frequency, reduce the operating frequency of described compressor;
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, wherein, described first preset temperature is greater than the second preset temperature.
2. the temperature-controlled process of frequency converter as claimed in claim 1, it is characterized in that, after the step of the operating frequency of the described compressor of described reduction, the temperature-controlled process of described frequency converter also comprises:
The temperature of described frequency converter is detected after reducing the operating frequency prefixed time interval of described compressor;
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, perform described by the operating frequency of described compressor by the second operating frequency after reducing to the step returning to described first operating frequency;
When detecting that the temperature of frequency converter is greater than the second preset temperature, perform the step of the operating frequency reducing described compressor.
3. the temperature-controlled process of frequency converter as claimed in claim 1, it is characterized in that, when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, after obtaining the step of the first current operating frequency of compressor, the temperature-controlled process of described frequency converter also comprises:
When described first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, wherein, described first predeterminated frequency is greater than the second predeterminated frequency;
When described first rotating speed is less than preset rotation speed, increase the rotating speed of described blower fan, after increasing to make rotating speed, the second rotating speed of described blower fan is more than or equal to preset rotation speed;
When detecting that the temperature of frequency converter is less than or equal to the second preset temperature, the rotating speed of described blower fan is returned to described first rotating speed by described second rotating speed.
4. the temperature-controlled process of the frequency converter as described in any one of claims 1 to 3, is characterized in that, the temperature-controlled process of described frequency converter also comprises:
When detecting that the temperature of described frequency converter is less than the 3rd preset temperature, determine whether the temperature of current outdoor environment is greater than default environment temperature, wherein, described 3rd preset temperature is less than described second preset temperature;
When the temperature of current outdoor environment is greater than default environment temperature, determine that whether described blower fan is in running order;
When described blower fan is in closed condition, run described blower fan.
5. a temperature control equipment for frequency converter, is characterized in that, the temperature control equipment of described frequency converter comprises:
Frequency acquisition module, for when detecting that the temperature of frequency converter is more than or equal to the first preset temperature, obtains the first operating frequency that compressor is current;
Frequency reducing module, for when described first operating frequency is more than or equal to the first predeterminated frequency, reduces the operating frequency of described compressor;
Frequency retrieval module, for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency, wherein, described first preset temperature is greater than the second preset temperature.
6. the temperature control equipment of frequency converter as claimed in claim 5, it is characterized in that, the temperature control equipment of described frequency converter also comprises:
Detection module, for reducing the temperature detecting described frequency converter after the operating frequency prefixed time interval of described compressor;
Described frequency retrieval module also for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, by the operating frequency of described compressor by the second operating frequency after reducing to returning to described first operating frequency;
Described frequency reducing module also for when detecting that the temperature of frequency converter is greater than the second preset temperature, reduces the operating frequency of described compressor.
7. the temperature control equipment of frequency converter as claimed in claim 5, it is characterized in that, the temperature control equipment of described frequency converter also comprises:
Rotating speed acquisition module, for when described first operating frequency is less than or equal to the second predeterminated frequency, obtain the first rotating speed that blower fan is current, wherein, described first predeterminated frequency is greater than the second predeterminated frequency;
Rotating speed increases module, for when described first rotating speed is less than preset rotation speed, increases the rotating speed of described blower fan, and after increasing to make rotating speed, the second rotating speed of described blower fan is more than or equal to preset rotation speed;
Rotating speed recovers module, for when detecting that the temperature of frequency converter is less than or equal to the second preset temperature, the rotating speed of described blower fan is returned to described first rotating speed by described second rotating speed.
8. the temperature control equipment of the frequency converter as described in any one of claim 5 to 7, is characterized in that, the temperature control equipment of described frequency converter also comprises:
Environment temperature determination module, for when detecting that the temperature of described frequency converter is less than the 3rd preset temperature, determines whether the temperature of current outdoor environment is greater than default environment temperature, and wherein, described 3rd preset temperature is less than described second preset temperature;
State determining module, for when the temperature of current outdoor environment is greater than default environment temperature, determines that whether described blower fan is in running order;
Run module, for when described blower fan is in closed condition, run described blower fan.
9. an air-conditioning, is characterized in that, described air-conditioning comprises the temperature control equipment of the frequency converter described in any one of claim 5 to 8.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| CN107289577A (en) * | 2017-05-22 | 2017-10-24 | 青岛海尔空调器有限总公司 | Generator powered air-conditioner control method, control system and air conditioner |
| CN109067290A (en) * | 2018-06-29 | 2018-12-21 | 珠海格力电器股份有限公司 | Method, system, terminal and the readable storage medium storing program for executing for preventing blower motor from burning |
| CN110365278A (en) * | 2019-08-20 | 2019-10-22 | 东北大学 | A kind of output control method and system of pump variable frequency device |
| CN111023499A (en) * | 2019-12-18 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Air conditioner operation control method, device, equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020108384A1 (en) * | 2001-02-15 | 2002-08-15 | Akiyoshi Higashiyama | Air conditioning systems |
| US20090090118A1 (en) * | 2007-10-08 | 2009-04-09 | Emerson Climate Technologies, Inc. | Variable speed compressor protection system and method |
| CN101821509A (en) * | 2007-10-08 | 2010-09-01 | 艾默生环境优化技术有限公司 | Compressor protection system and method |
| CN102155778A (en) * | 2011-03-15 | 2011-08-17 | 宁波奥克斯电气有限公司 | Direct current variable frequency air conditioner control method for protecting frequency converter module |
| CN104596045A (en) * | 2015-02-12 | 2015-05-06 | 珠海格力电器股份有限公司 | Temperature control method for frequency converter of air conditioning system |
| WO2016121385A1 (en) * | 2015-01-30 | 2016-08-04 | 株式会社デンソー | Air conditioning device |
-
2016
- 2016-01-04 CN CN201610009099.0A patent/CN105546754B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020108384A1 (en) * | 2001-02-15 | 2002-08-15 | Akiyoshi Higashiyama | Air conditioning systems |
| US20090090118A1 (en) * | 2007-10-08 | 2009-04-09 | Emerson Climate Technologies, Inc. | Variable speed compressor protection system and method |
| CN101821509A (en) * | 2007-10-08 | 2010-09-01 | 艾默生环境优化技术有限公司 | Compressor protection system and method |
| CN102155778A (en) * | 2011-03-15 | 2011-08-17 | 宁波奥克斯电气有限公司 | Direct current variable frequency air conditioner control method for protecting frequency converter module |
| WO2016121385A1 (en) * | 2015-01-30 | 2016-08-04 | 株式会社デンソー | Air conditioning device |
| CN104596045A (en) * | 2015-02-12 | 2015-05-06 | 珠海格力电器股份有限公司 | Temperature control method for frequency converter of air conditioning system |
Non-Patent Citations (1)
| Title |
|---|
| 王兆义: "《变频器应用故障200例》", 28 February 2013 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| CN107289577A (en) * | 2017-05-22 | 2017-10-24 | 青岛海尔空调器有限总公司 | Generator powered air-conditioner control method, control system and air conditioner |
| CN109067290A (en) * | 2018-06-29 | 2018-12-21 | 珠海格力电器股份有限公司 | Method, system, terminal and the readable storage medium storing program for executing for preventing blower motor from burning |
| CN110365278A (en) * | 2019-08-20 | 2019-10-22 | 东北大学 | A kind of output control method and system of pump variable frequency device |
| CN111023499A (en) * | 2019-12-18 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Air conditioner operation control method, device, equipment and storage medium |
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