CN103175285B - The control circuit of outdoor fan of air-conditioner, control method and air-conditioner - Google Patents
The control circuit of outdoor fan of air-conditioner, control method and air-conditioner Download PDFInfo
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- CN103175285B CN103175285B CN201310100919.3A CN201310100919A CN103175285B CN 103175285 B CN103175285 B CN 103175285B CN 201310100919 A CN201310100919 A CN 201310100919A CN 103175285 B CN103175285 B CN 103175285B
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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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
- F24F2110/12—Temperature of the outside air
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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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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of control circuit of outdoor fan of air-conditioner, comprising: outdoor environment temperature detecting unit, sensing chamber's external environment temperature value when outdoor fan of air conditioner operates; Condenser tube temperature detecting unit, sensing chamber's external condenser coil temperature value when outdoor fan of air conditioner operates; Main control unit, between the regulatory region according to outdoor environment temperature value determination outdoor fan rotating speed, and determine the original speed position value during outdoor fan is between regulatory region, compare according to outdoor condenser coil temperature value and the reference temperature preset, determine the adjustment of rotational speed gear value of outdoor fan in regulatory region, export corresponding rotary speed instruction to blower fan driver element according to original speed position value or adjustment gear value; Blower fan driver element, drives outdoor fan load according to described control instruction, runs to adjust outdoor fan by corresponding rotating speed.The present invention also provides a kind of and has the air-conditioning of above-mentioned control circuit and a kind of control method of outdoor fan of air-conditioner.Cost of the present invention is low, and system is more stable.<!--1-->
Description
Technical field
The present invention relates to air-conditioner technical field, particularly a kind of control circuit of outdoor fan of air-conditioner, control method and air-conditioner.
Background technology
As everyone knows, equipment in large-scale communication machine room, power distribution room or these places, electronic equipment workshop or machine can constantly generate heat in running, equipment and components and parts temperature is likely caused to raise, and then shorten equipment or service life of a machine, also have similar Russia area, Southern African region, the open heating installation of Northern Part of China Cold Winter to cause too high the making us of room temperature to feel uncomfortable, be therefore necessary under this low temperature environment, adopt air-conditioner to carry out temperature adjustment to equipment or space.Even if when outdoor environment temperature is very low, air-conditioner is also needed to go the temperature of freezing with reduction equipment or machine, thus the service life of extension device or machine.But when the control circuit of common air-conditioner freezes at low ambient temperatures, easily cause evaporimeter frosting and freeze, anti-freeze defencive function frequent start-stop, causes air-conditioner can not normally export required refrigerating capacity, can not meet the needs of these Code in Hazardous Special Locations.Although market there are some low-temperature air conditioner apparatuses, but the control logic of these air conditioner units is fairly simple and control method is more coarse, can start and stop frequently when cryogenic refrigeration, cause refrigeration bad, client's refrigeration demand at low ambient temperatures can not be better met.
China Patent Publication No. is CN201145378Y, what name was called " fan rotary speed control module of fixed frequency air conditioner " patent discloses a kind of outdoor fan revolution speed control device, obtain refrigerant temperature by temperature sensor in the program to go to regulate rotation speed of fan, refrigerant temperature is changed with the change of rotation speed of fan always, make refrigerant temperature and stable chronic of rotation speed of fan, and be not easy to stablize.
Summary of the invention
Main purpose of the present invention is the control circuit providing a kind of outdoor fan of air-conditioner, be intended to effectively to solve current air conditioner unit at low ambient temperatures refrigerating operaton time start and stop frequently, cause refrigeration bad, client's refrigeration demand at low ambient temperatures can not be better met.
In order to realize goal of the invention, the invention provides a kind of control circuit of outdoor fan of air-conditioner, be applied to the control of outdoor fan under refrigeration mode, it comprises:
Outdoor environment temperature detecting unit, for sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Condenser tube temperature detecting unit, for sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates;
Main control unit, between the regulatory region determining outdoor fan rotating speed according to outdoor environment temperature value TempX, and determines the original speed position value N1 during outdoor fan is between regulatory region, exports corresponding rotary speed instruction to blower fan driver element according to this original speed position value N1; Gear value in described regulatory region has multiple, and this original speed position value N1 is positioned at middle gear place value between corresponding regulatory region or partially near intervening gears; Compare according to outdoor condenser coil temperature value TempY and the reference temperature Temp1 preset and Temp2, determine the adjustment of rotational speed gear value N2 of outdoor fan in regulatory region, export corresponding rotary speed instruction to blower fan driver element according to adjustment gear value N2; Described main control unit is also for controlling outdoor fan of air-conditioner when starting, and before detection TempX, run a preset time T 1 with preset rotation speed, its span is 5-60 second, and described preset rotation speed is the most high-grade partially near rotating speed or the most high-grade rotating speed;
Blower fan driver element, for driving outdoor fan load according to described control instruction, runs by the rotating speed of correspondence to adjust outdoor fan;
Wherein, compare according to outdoor condenser coil temperature value TempY and the reference temperature Temp1 preset and Temp2, determine that the adjustment of rotational speed gear value N2 of outdoor fan in regulatory region is:
As Temp1≤TempY≤Temp2, outdoor fan rotating speed gear is not adjusted;
As TempY<Temp1, one grade is reduced to outdoor fan gear, if reached the deep low gear place value in regulatory region, then no longer adjust;
As TempY>Temp2, one grade is risen to outdoor fan gear, if reached the most high-grade place value in regulatory region, then no longer adjust.
Preferably, described main control unit also ran a preset time T 2 with current gear rotating speed for controlling outdoor fan of air-conditioner before detection TempY, and its span is 5-60 second.
Preferably, the scope of described Temp1 value is: 15 DEG C-50 DEG C, and the scope of Temp2 value is: 15 DEG C-50 DEG C, and Temp2>Temp1.
Preferably, the span of Temp1 value and Temp2 value is 5 DEG C≤Temp2-Temp1≤20 DEG C;
Preferably, the control circuit of above-mentioned outdoor fan of air-conditioner, also comprises:
Cross valve working state detection units, in order to detect the duty of air-conditioner cross valve to determine the mode of operation of air-conditioner.
The present invention also provides a kind of air-conditioner, comprises outdoor condenser, outdoor fan, and it also comprises the control circuit of outdoor fan of air-conditioner.The control circuit of this outdoor fan of air-conditioner comprises:
Outdoor environment temperature detecting unit, for sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Condenser tube temperature detecting unit, for sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates;
Main control unit, between the regulatory region determining outdoor fan rotating speed according to outdoor environment temperature value TempX, and determine the original speed position value N1 during outdoor fan is between regulatory region, compare according to outdoor condenser coil temperature value TempY and the reference temperature Temp1 preset and Temp2, determine the adjustment of rotational speed gear value N2 of outdoor fan in regulatory region, export corresponding rotary speed instruction to blower fan driver element according to original speed position value N1 or adjustment gear value N2;
Blower fan driver element, for driving outdoor fan load according to described control instruction, runs by the rotating speed of correspondence to adjust outdoor fan.
The present invention also provides a kind of outdoor fan control method of air-conditioning, is applied to the control of outdoor fan under refrigeration mode, comprises the following steps:
A0, outdoor fan of air-conditioner are when starting, and run a preset time T 1 with preset rotation speed, its span is 5-60 second; Described preset rotation speed is the most high-grade partially near rotating speed or the most high-grade rotating speed;
A. sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Between the regulatory region B. determining outdoor fan rotating speed according to outdoor environment temperature value TempX, export control instruction determination outdoor fan between regulatory region in original speed position value N1, and control outdoor fan and run by the corresponding rotating speed of N1 gear;
C. sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates, the outdoor condenser coil temperature value TempY detected and the reference temperature Temp1 preset and Temp2 are compared, in regulatory region, the rotating speed gear of adjustment outdoor fan is to obtain adjustment gear value N2:
As Temp1≤TempY≤Temp2, outdoor fan rotating speed gear is not adjusted;
As TempY<Temp1, one grade is reduced to outdoor fan gear, if reached the deep low gear place value in regulatory region, then no longer adjust;
As TempY>Temp2, one grade is risen to outdoor fan gear, if reached the most high-grade place value in regulatory region, then no longer adjust;
D. control outdoor fan according to adjustment of rotational speed gear value N2 to run by corresponding rotating speed.
Preferably, when outdoor environment temperature value TempX is larger, the original speed position value N1 in described regulatory region is larger, when TempX more hour, the interior original speed position value N1 of described regulatory region is less.
Preferably, also comprised before step C:
Outdoor fan runs a preset time T 2 with current gear rotating speed, and its span is 5-60 second.
Preferably, its reference temperature Temp1 preset and Temp2 value, Temp1 scope: 15 DEG C-50 DEG C, Temp2 scope: 15 DEG C-50 DEG C, and Temp2>Temp1.
Preferably, also comprise before sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates:
Detect the duty of air-conditioner cross valve to determine the mode of operation of air-conditioner.
The control circuit of outdoor fan of air-conditioner of the present invention is by detecting the Guan Wen of ambient temperature and outdoor condenser, control outdoor fan rotating speed to adjust the air quantity of air-conditioner condenser, and then realize the refrigeration demand in the very low situation of outdoor environment temperature, promote refrigeration also to avoid damaging compressor in underload refrigeration, solve the existing air-conditioner poor refrigerating efficiency existing when cryogenic refrigeration and the problem of compressor can be damaged.The present invention can meet air-conditioner and normally use at low ambient temperatures, compared to other control method and arrangements for speed regulation, cost is low, system is more stable, the adjustment smooth sequential of outdoor air quantity, the rotating speed orderly adjustment of outdoor fan makes the variations in temperature of sensor little and can not cause the rotating speed fusion of outdoor fan, can realize outdoor environment temperature from the ultra-wide of-20 DEG C to 55 DEG C refrigeration scope.
The present invention program is by utilizing shelves value first with rotating speed between the regulatory region of TempX acquisition outdoor fan rotating speed, and recycling TempY carries out fine tuning to the rotating speed in interval, reaches the object of quick adjustment outdoor fan rotating speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of the control circuit of outdoor fan of air-conditioner in a preferred embodiment of the present invention;
Fig. 2 is the structural representation of the control circuit of outdoor fan of air-conditioner in another preferred embodiment of the present invention;
Fig. 3 is the schematic flow sheet of the control method of outdoor fan of air-conditioner in a preferred embodiment of the present invention;
Fig. 4 is the schematic flow sheet of the control method of outdoor fan of air-conditioner in another preferred embodiment of the present invention;
Fig. 5 is the schematic diagram of air-conditioning system 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 control circuit of outdoor fan of air-conditioner, with reference to Fig. 1, in one embodiment of the invention, the control circuit of this outdoor fan of air-conditioner at least comprises:
Outdoor environment temperature detecting unit 10, for sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Condenser tube temperature detecting unit 30, for sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates;
Main control unit 20, between the regulatory region determining outdoor fan rotating speed according to outdoor environment temperature value TempX, and determine the original speed position value N1 during outdoor fan is between regulatory region, compare according to outdoor condenser coil temperature value TempY and the reference temperature Temp1 preset and Temp2, determine the adjustment of rotational speed gear value N2 of outdoor fan in regulatory region, export corresponding rotary speed instruction to blower fan driver element according to original speed position value N1 or adjustment gear value N2;
Blower fan driver element 40, for driving outdoor fan load according to described control instruction, runs by the rotating speed of correspondence to adjust outdoor fan.
Shown in Figure 1, in the embodiment of the present invention, the control circuit of outdoor fan of air-conditioner also can comprise zero cross signal detecting unit 50 and outdoor fan load unit 60.Wherein, the effect of zero cross signal detecting unit 50 is the zero cross fired time obtaining power supply, works so that main control unit 20 controls blower fan driver element 40.Outdoor environment temperature detecting unit 10 and condenser tube temperature detecting unit 30 can comprise temperature sensor.Namely these sensors are sent to main control unit 20 after getting temperature signal according to sequencing, judge whether the gear needing to adjust outdoor fan for main control unit 20.The wind-speed gear value of the outdoor environment temperature value determination outdoor fan that main control unit 20 detects according to outdoor environment temperature detecting unit 10 when entering refrigeration mode for the first time, and run a Preset Time.After this Preset Time, condenser tube temperature detecting unit 30 detects condenser coil temperature, and send to main control unit 20, main control unit 20 judges outdoor condenser coil temperature whether in a preset range (such as > 33 DEG C of < 46 DEG C) according to the temperature signal that condenser tube temperature detecting unit 30 sends, if, then keep outdoor fan gear motionless, if not, then produce control instruction, control blower fan driver element 40 to work, outdoor fan load unit is outputed voltage signal to by blower fan driver element 40, outdoor fan load unit 60 is driven to adjust the gear of outdoor fan.
The embodiment of the present invention is by utilizing shelves value first with rotating speed between the regulatory region of TempX acquisition outdoor fan rotating speed, and recycling TempY carries out fine tuning to the rotating speed in interval, reaches the object of quick adjustment outdoor fan rotating speed.And then realize refrigeration demand in the very low situation of outdoor environment temperature, promote refrigeration and also avoid damaging compressor in underload refrigeration, solve the existing air-conditioner poor refrigerating efficiency existing when cryogenic refrigeration and the problem of compressor can be damaged.The present invention can meet air-conditioner and normally use at low ambient temperatures, compared to other control method and arrangements for speed regulation, cost is low, system is more stable, the adjustment smooth sequential of outdoor air quantity, the rotating speed orderly adjustment of outdoor fan makes the variations in temperature of sensor little and can not cause the rotating speed fusion of outdoor fan, can realize outdoor environment temperature from the ultra-wide of-20 DEG C to 55 DEG C refrigeration scope.
In the embodiment of the present invention, above-mentioned main control unit 20 is also for controlling outdoor fan of air-conditioner when starting, and before detection TempX, run a preset time T 1 with preset rotation speed, its span is 5-60 second.Outdoor fan of air-conditioner is when starting, and run a preset time T 1 with preset rotation speed, its span is 5-60 second, allows TempY after the abundant heat exchange of condenser tend towards stability.Its preset rotation speed can be chosen as the most high-grade partially near rotating speed or the most high-grade rotating speed, and its principle is that smooth and easy operation is got up when starting, and prevents because blower motor electric current when the slow-speed of revolution starts is excessive and damages motor.As in previous embodiment, blower fan gear has 15 grades, the 15th grade or the 13rd grade, the 14th grade etc. can be chosen as in the present embodiment.
Further, main control unit 20 also ran a preset time T 2 with current gear rotating speed for controlling outdoor fan of air-conditioner before detection TempY, and its span is 5-60 second.Can allow the continuous duplicate detection of control system like this, along with change automatic decision and the regulation stall of TempX, TempY, reach best result of use.
See Fig. 2, in a preferred embodiment of the present invention, the control circuit of outdoor fan of air-conditioner also can comprise: wire jumper detecting unit 70, in order to obtain current input power frequency values, and determine that current type value exports main control unit 20 to, so that main control unit 20 is according to the different outdoor fan tachometer values of each wind-speed gear of different type of machines determination outdoor fan.
Further, in one embodiment, the control circuit of above-mentioned outdoor fan of air-conditioner also comprises: cross valve working state detection units 80, in order to detect the duty of air-conditioner cross valve to determine the mode of operation of air-conditioner, outdoor fan control method of the present invention is just enabled when air-conditioner is refrigeration mode, when for heating mode, do not enable outdoor fan control method of the present invention.Owing to being provided with cross valve working state detection units 80, the control circuit of outdoor fan of air-conditioner of the present invention can carry out work according to the mode of operation of air-conditioner, avoids also carrying out above-mentioned control to air-conditioner in a heating mode, causes energy resource consumption.
Further, the control circuit of above-mentioned outdoor fan of air-conditioner also can comprise LED display unit 90, is provided with LED in this LED display unit 90, in order to show air-conditioner fault message in the course of the work.Owing to being provided with LED display unit 90, the control circuit of outdoor fan of air-conditioner of the present invention can show fault message, so that user safeguards air-conditioning.
Concrete, in the embodiment of the present invention, the course of work of the control circuit of outdoor fan of air-conditioner can comprise:
First, when outdoor fan starts to start, wire jumper detecting unit 70 obtains current input power frequency values and determines current air-conditioner type value.Then, cross valve working state detection units 80 judges whether cross valve powers on, if, then start outdoor fan first full speed running prefixed time interval T150 second, TempY after the abundant heat exchange of condenser is allowed to tend towards stability, detect outdoor environment temperature TempX by outdoor environment temperature detecting unit 10 again, main control unit 20 controls outdoor fan according to this outdoor environment temperature TempX and enters original speed position value N1.Outdoor fan runs a time interval T2 preset at original speed position, now timing judging unit 50 timing also judges whether to reach prefixed time interval T2 (the default time interval can be set as 50 seconds, also can arrange prefixed time interval according to different actual needs is other times value), if, then condenser tube temperature detecting unit 30 sensing chamber external condenser coil temperature value TempY, the more outdoor condenser coil temperature value TempY and reference temperature Temp1 and Temp2 of main control unit 20, if Temp1≤TempY≤Temp2, then main control unit 20 pairs of outdoor fan rotating speed gears do not adjust.If during TempY<Temp1, then main control unit 20 pairs of outdoor fan gears reduce by one grade, if the deep low gear place value reached in regulatory region no longer adjusts.If during TempY>Temp1, then main control unit 20 pairs of outdoor fan gears rise one grade, if the most high-grade place value reached in regulatory region no longer adjusts.After main control unit 20 adjusts outdoor fan gear at every turn, outdoor fan runs prefixed time interval T250 second with current gear rotating speed, relatively condenser coil temperature value TempY and reference temperature Temp1 and Temp2 carries out above judgement to adjust outdoor fan rotating speed gear, allow the continuous duplicate detection of control system, along with TempX, the change automatic decision of TempY and regulation stall, reach best result of use.
First reference temperature Temp1 and the second reference temperature Temp2 magnitude relationship are: Temp1<Temp2, and 5 DEG C≤Temp2-Temp1≤20 DEG C, avoid these two reference temperature value can not because of difference too little as 2 DEG C following time cause the frequent adjustment number of times of outdoor fan gear too much, or when two reference temperatures differences are too large, outdoor fan gear adjusts and loses effect of the present invention very little.In the present embodiment, the first reference temperature Temp1 is set to 33 DEG C, and the second reference temperature Temp2 is set to 46 DEG C; And in other embodiments of the present invention, can arrange Temp1 and Temp2 according to different actual needs is other temperature values.Temp1 and Temp2, scope is 15 DEG C-50 DEG C
Whether off-premises station is powered on by cross valve determines whether refrigeration mode, starts the control circuit of outdoor fan of air-conditioner of the present invention under for refrigeration mode, and the first full speed running of outdoor fan entered original speed position according to outdoor environment temperature value TempX after 50 seconds.Concrete, in one embodiment of the invention, original speed position rule is as shown in table 1 below:
Table 1
As shown in Table 1, when TempX is higher, the original speed position value of outdoor fan is larger, during as 7 DEG C≤TempX < 11 DEG C, outdoor fan original speed position value is 7, and as 11 DEG C≤TempX < 15 DEG C, the original speed position value of outdoor fan is 9.When TempX is lower, the original speed position value of outdoor fan is less, and during as-8 DEG C≤TempX <-2 DEG C, outdoor fan original speed position value is 4, and as-13 DEG C≤TempX <-8 DEG C, the original speed position value of outdoor fan is 3.
After running the full speed wind shelves of 50 seconds, outdoor fan rotating speed according to outdoor environment temperature value TempX, will enter initial wind shelves, makes adjustment afterwards according to the change of condenser coil temperature value TempY again first.
In one embodiment of the invention, can arrange between regulatory region according to outdoor environment temperature, after getting outdoor condenser coil temperature value TempY and outdoor environment temperature value TempX, the interval residing for outdoor environment temperature value TempX adjusted outdoor fan gear every 50 seconds by the size of more outdoor condenser coil temperature value TempY and the first reference temperature Temp133 DEG C and the second reference temperature Temp246 DEG C.See table 2, the corresponding relation between the gear of outdoor fan and ambient zone can be:
1) judge TempY temperature, when TempY meets 33 DEG C≤TempY≤46 DEG C, outdoor fan is uncomfortable rectification campaign shelves just, stable operation.
2) can only select to rise or decline in TempX interval corresponding gear number time ungratified, can only rise step by step or decline step by step during rotating speed gear change.
3) if TempY temperature increases to over this scope, then wind shelves raise, until the gear maximum be elevated in this outdoor environment temperature value TempX gear regulatory region does not adjust; If TempY temperature reduces lower than this scope, then wind-speed gear reduces, until the gear minimum of a value be reduced in this gear regulatory region does not adjust.
As being in interval corresponding to-2 DEG C≤TempX < 3 DEG C when outdoor environment temperature value TempX is 2 DEG C as shown in Table 1, the original speed position value of outdoor fan is 5, be in the interval that-2 DEG C≤TempX < 3 DEG C is corresponding as shown in Table 2, the gear value of outdoor fan in this interval has 3/4/5/6/7/8, every 50 seconds detection primary condenser coil temperature value TempY, if 33 DEG C≤TempY≤46 DEG C, then wind speed maintain the 5th grade constant.If TempY<33 DEG C, then outdoor fan declines one grade to 4, if dropped to the deep low gear 3 in this interval, then outdoor fan gear no longer declines.If TempY>46 DEG C, then outdoor fan rises one grade to 6, if risen to the most high-grade 8 in this interval, then outdoor fan gear no longer rises.
Table 2
As can be seen from Table 1 and Table 2, the original speed position value of outdoor fan is positioned at middle gear place value between corresponding regulatory region or partially near intervening gears, such outdoor fan enters original speed position value by outdoor environment temperature value TempX, when carrying out gear adjustment in regulatory region according to condenser coil temperature value TempY temperature value again, target shift place value can be adjusted to fast in interval.Original speed position value as determined as-13 DEG C≤TempX <-8 DEG C is in Table 13, determine that the regulation stall gear value in this interval is 1/2/3/4/5 according to-13 DEG C≤TempX <-8 DEG C in table 2, as can be seen from table 1 and table 2, the original speed position value 3 determined as-13 DEG C≤TempX <-8 DEG C, be in the middle gear place value determined according to-13 DEG C≤TempX <-8 DEG C by table 2 in regulation stall value 1/2/3/4/5, then 2 grades or 1 grade can be adjusted to low-grade location fast according to TempY temperature value, or adjust to 4 grades or 5 grades to high tap position.
In embodiments of the present invention, when air-conditioner receives off signal shutdown or power-off, then the control process of above-mentioned control circuit also terminates thereupon.
Outdoor fan motor of the present invention can be alternating current generator, also can be direct current generator.When outdoor fan motor is alternating current generator, electric-motor drive unit can by the rotating speed that regulates the mode of alternating current generator input voltage to adjust motor to tachometer value corresponding to outdoor fan gear in above description; When outdoor fan motor is direct current generator, electric-motor drive unit conveniently can adjust DC motor speed by the mode of the PWM (pulsewidth modulation) of adjustment control direct current generator, can easily by tachometer value corresponding for outdoor fan gear in the adjustment of rotational speed of direct current generator to above description.
Blower fan gear bands of the present invention is 3-20 shelves, is preferably 5-15 shelves.Always have 15 grades in the present embodiment, gear value is larger, and corresponding tachometer value is higher.Gear value also can be defined as other numerical value according to air-conditioning practical operation situation, as 5 grades, 6 grades, 20 grades etc.The tachometer value of every grade can be determined according to the actual motion demand of air-conditioning.In the present embodiment, the outdoor fan tachometer value of every grade accounts for the ratio of outdoor fan maximum (top) speed as following table:
| Outdoor fan gear | 1 grade | 2 grades | 3 grades | 4 grades | 5 grades | 6 grades | 7 grades | 8 grades |
| Account for maximum (top) speed ratio | 6％ | 13％ | 22％ | 29％ | 35％ | 41％ | 47％ | 54％ |
| Outdoor fan gear | 9 grades | 10 grades | 11 grades | 12 grades | 13 grades | 14 grades | 15 grades | |
| Account for maximum (top) speed ratio | 60％ | 70％ | 75％ | 80％ | 85％ | 90％ | 95％ |
The present invention also provides a kind of air-conditioning, and it at least comprises outdoor condenser, outdoor fan, also comprises the control circuit of aforementioned outdoor fan of air-conditioner.The structure of this control circuit and operation principle see the embodiment of accompanying drawing 1,2 and correspondence thereof, can not be described further at this.Owing to having the control circuit of aforementioned outdoor fan of air-conditioner, air-conditioning of the present invention can meet air-conditioner and normally use at low ambient temperatures, compared to other control method and arrangements for speed regulation, cost is low, system is more stable, the adjustment smooth sequential of outdoor air quantity, the rotating speed orderly adjustment of outdoor fan makes the variations in temperature of sensor little and can not cause the rotating speed fusion of outdoor fan, can realize outdoor environment temperature from the ultra-wide refrigeration scope of-20 DEG C to 55 DEG C.
The present invention also provides a kind of control method of outdoor fan of air-conditioner, and the method can realize based on the control circuit of aforementioned outdoor fan of air-conditioner.Shown in Figure 3, in one embodiment, the method comprises the following steps:
Step S10, sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Step S20, between the regulatory region determining outdoor fan rotating speed according to outdoor environment temperature value TempX, export control instruction determination outdoor fan between regulatory region in original speed position value N1, and control outdoor fan and run by the corresponding rotating speed of N1 gear;
Step S30, sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates, the outdoor condenser coil temperature value TempY detected and the reference temperature Temp1 preset and Temp2 are compared, in regulatory region, the rotating speed gear of adjustment outdoor fan is to obtain adjustment gear value N2:
As Temp1≤TempY≤Temp2, outdoor fan rotating speed gear is not adjusted;
As TempY<Temp1, one grade is reduced to outdoor fan gear, if the deep low gear place value reached in regulatory region no longer adjusts.
As TempY>Temp2, one grade is risen to outdoor fan gear, if the most high-grade place value reached in regulatory region no longer adjusts.
Step S40, controls outdoor fan according to adjustment of rotational speed gear value N2 and runs by corresponding rotating speed.
In the present embodiment, by main control unit, the wind speed of outdoor fan of air-conditioner is divided into multiple (such as 5-20) preset gear.Outdoor environment temperature value TempX is higher, and the outdoor fan original speed position initial value N1 determined by TempX is larger, and outdoor fan rotating speed is larger; Outdoor environment temperature value TempX is lower, and the outdoor fan original speed position initial value N1 determined by TempX is less, and outdoor fan rotating speed is lower.
Further, in the embodiment of the present invention, detect once outdoor condenser coil temperature every Preset Time, then judge outdoor condenser coil temperature whether in a preset range, if within the scope of this, then main control unit controlled wind speed gear does not adjust; If outdoor condenser coil temperature increases to over preset range, then main control unit controls outdoor fan rotating speed gear and raises one grade, until the gear maximum be elevated in this gear regulatory region does not adjust; If outdoor condenser coil temperature reduces lower than this scope, then outdoor fan rotating speed gear reduces by one grade, until the gear minimum of a value be reduced in this gear regulatory region does not adjust.
In preceding method flow process, also can comprise before steps A:
Outdoor fan of air-conditioner is when starting, and run a preset time T 1 with preset rotation speed, its span is 5-60 second, allows TempY after the abundant heat exchange of condenser tend towards stability.Its preset rotation speed can be chosen as the most high-grade partially near rotating speed or the most high-grade rotating speed, and its principle is that smooth and easy operation is got up when starting, and prevents because blower motor electric current when the slow-speed of revolution starts is excessive and damages motor.As in previous embodiment, blower fan gear has 15 grades, the 15th grade or the 13rd grade, the 14th grade etc. can be chosen as in the present embodiment.
Further, also can comprise before step C:
Outdoor fan runs a preset time T 2 with current gear rotating speed, and its span is 5-60 second.Allow the continuous duplicate detection of control system, along with change automatic decision and the regulation stall of TempX, TempY, reach best result of use.
In embodiments of the present invention, outdoor fan rotating speed is exchanged to adjust the air quantity of air-conditioning condenser by outside outdoor environment temperature and outdoor condenser coil temperature control room, wind-speed gear value when after powering outdoor environment temperature being judged that described outdoor environment temperature enters refrigeration mode for the first time, and run a Preset Time, judge outdoor condenser coil temperature more whether in a preset range, again gear rising carried out to wind-speed gear or reduce adjustment, to meet the very low refrigeration demand of outdoor environment temperature.Compared with prior art, the control method of outdoor fan of air-conditioner of the present invention is specially for low-temperature refrigeration air conditioner designs, meet air-conditioning normally to use at low ambient temperatures, compared to other control method and arrangements for speed regulation, cost is low, and system is more stable, the adjustment smooth sequential of outdoor air quantity, the rotating speed orderly adjustment of outdoor fan makes the variations in temperature of sensor little and can not cause the rotating speed fusion of outdoor fan, can realize outdoor environment temperature from the ultra-wide of-20 DEG C to 55 DEG C refrigeration scope.
In previous embodiment, perform described by the outdoor condenser coil temperature detected with preset reference temperature compare before comprise: the value of preset first reference temperature Temp1 (such as 33 DEG C) and the second reference temperature Temp2 (such as 46 DEG C), described second reference temperature Temp2 is greater than described first reference temperature Temp1.Should be noted that, 33 DEG C and 46 DEG C is the temperature value in a preferred embodiment of the present invention, in other embodiments of the present invention, can arrange TempY temperature preset range for other temperature values according to different actual needs, the span of such as Temp1 and Temp2 can be: 15 DEG C-50 DEG C.
In one embodiment of the present invention, also comprised before execution step S30:
Obtain current input power frequency values, and determine current type value, so that main control unit exports control instruction according to type regulate outdoor fan rotating speed.
Detect the duty of air-conditioner cross valve to determine the mode of operation of air-conditioner.Concrete, be expressed as refrigeration mode under cross valve no power state, enable outdoor fan control method of the present invention, be expressed as heating mode under cross valve "on" position, outdoor fan is pressed the original control method of air-conditioning and is run.Owing to being provided with cross valve working state detection units 80, the control circuit of outdoor fan of air-conditioner of the present invention can carry out work according to the mode of operation of air-conditioner, avoids also carrying out above-mentioned control to air-conditioner in a heating mode, causes energy resource consumption.
Display air-conditioner fault message in the course of the work.Owing to being provided with LED display unit, the control circuit of outdoor fan of air-conditioner of the present invention can show fault message, so that user safeguards air-conditioning.
See Fig. 4, in a preferred embodiment of the present invention, the control method flow process of above-mentioned outdoor fan of air-conditioner can comprise the following steps:
Step S1, obtains current input power frequency values and determines current type value when outdoor fan starts;
Step S2, judges whether cross valve powers on, if otherwise perform step S3, if do not start the control circuit of outdoor fan of air-conditioner, terminate the control method flow process of outdoor fan of air-conditioner of the present invention.
Step S3, the first full speed running of outdoor fan 50 seconds, then sensing chamber external environment temperature value TempX, determine original speed position value according to this outdoor environment temperature value TempX.
Step S4, outdoor fan runs 50 seconds with current gear value.
Step S5, compares the size of condenser coil temperature value TempY and the first preset temperature Temp1 and the second preset temperature Temp2 value, if during Temp1≤TempY≤Temp2, does not adjust, and jump to step S4 to outdoor fan rotating speed gear.Otherwise enter step S6.
Step S6, if during TempY<Temp1, judges whether outdoor fan gear has reached minimum one grade, if otherwise reduce by one grade, be no longer adjust, and enter and jump to step S4.Otherwise enter step S7.
Step S7, if during TempY>Temp1, judges whether outdoor fan gear has reached most high tap position, if otherwise rise one grade, be no longer adjust, and enter step S4.Otherwise jump to step S4.
The present invention also provides a kind of air-conditioner, and the schematic diagram of this air-conditioner can increase controller and go to realize cryogenic refrigeration function based on control method of the present invention on existing air-conditioning, is conducive to carrying out upgrading on former type.Shown in Figure 5.In figure, air-conditioning system comprises the compressor 1 be connected successively, cross valve 2, outdoor heat exchanger 4, outdoor fan 3, off-premises station control circuit mainboard 6, off-premises station control circuit board 7 of the present invention, throttling arrangement 5, indoor heat exchanger 9, indoor fan 8.Off-premises station mainboard 6 and off-premises station control circuit board 7 can regulate the rotating speed of outdoor fan 3, thus the heat exchange amount of conditioning chamber external heat exchanger 4.Described off-premises station control circuit board 7 also comprises outdoor environment temperature detecting unit 71, outdoor heat exchanger condensation temperature detecting unit 72.Described outdoor environment temperature detecting unit 71 goes to obtain outdoor environment temperature value TempX.Described outdoor heat exchanger condensation temperature detecting unit 72 obtains condenser coil temperature TempY, is arranged on condenser.
Such as, if need to increase cryogenic refrigeration function on a air-conditioning, before increase cryogenic refrigeration function, the off-premises station control circuit mainboard 6 of former air-conditioning directly connects outdoor fan control line, export blower fan drive singal and control outdoor fan operation, now just only need off-premises station control circuit mainboard 6 to be connected with off-premises station control circuit board 7, outdoor environment temperature detecting unit (outdoor environment temperature temperature-sensitive bag) 71 on off-premises station control circuit board 7 installs and is placed on after condenser, outdoor heat exchanger condensation temperature detecting unit (outdoor heat exchanger condensation temperature temperature-sensitive bag) 72 is arranged on condenser, outdoor fan control line is inserted on off-premises station control circuit board 7.Technical scheme according to the present invention goes to realize cryogenic refrigeration function by off-premises station control circuit board 7, and stable fast, required time is short.
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 (11)
1. a control circuit for outdoor fan of air-conditioner, is characterized in that, be applied to the control of outdoor fan under refrigeration mode, the control circuit of described outdoor fan of air-conditioner comprises:
Outdoor environment temperature detecting unit, for sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Condenser tube temperature detecting unit, for sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates;
Main control unit, between the regulatory region determining outdoor fan rotating speed according to outdoor environment temperature value TempX, and determines the original speed position value N1 during outdoor fan is between regulatory region, exports corresponding rotary speed instruction to blower fan driver element according to this original speed position value N1; Gear value in described regulatory region has multiple, and this original speed position value N1 is positioned at middle gear place value between corresponding regulatory region or partially near intervening gears; Compare according to outdoor condenser coil temperature value TempY and the reference temperature Temp1 preset and Temp2, determine the adjustment of rotational speed gear value N2 of outdoor fan in regulatory region, export corresponding rotary speed instruction to blower fan driver element according to adjustment gear value N2;
Blower fan driver element, for driving outdoor fan load according to described control instruction, runs by the rotating speed of correspondence to adjust outdoor fan; Described main control unit is also for controlling outdoor fan of air-conditioner when starting, and before detection TempX, run a preset time T 1 with preset rotation speed, its span is 5-60 second, and described preset rotation speed is the most high-grade partially near rotating speed or the most high-grade rotating speed;
Wherein, compare according to outdoor condenser coil temperature value TempY and the reference temperature Temp1 preset and Temp2, determine that the adjustment of rotational speed gear value N2 of outdoor fan in regulatory region is:
As Temp1≤TempY≤Temp2, outdoor fan rotating speed gear is not adjusted;
As TempY<Temp1, one grade is reduced to outdoor fan gear, if reached the deep low gear place value in regulatory region, then no longer adjust;
As TempY>Temp2, one grade is risen to outdoor fan gear, if reached the most high-grade place value in regulatory region, then no longer adjust.
2. the control circuit of outdoor fan of air-conditioner as claimed in claim 1, is characterized in that, described main control unit also ran a preset time T 2 with current gear rotating speed for controlling outdoor fan of air-conditioner before detection TempY, and its span is 5-60 second.
3. the control circuit of outdoor fan of air-conditioner as claimed in claim 1, it is characterized in that, the scope of described Temp1 value is: 15 DEG C-50 DEG C, and the scope of Temp2 value is: 15 DEG C-50 DEG C, and Temp2>Temp1.
4. the control circuit of outdoor fan of air-conditioner as claimed in claim 3, Temp1 value and Temp2 value, is characterized in that, Temp1 value and Temp2 value span are: 5 DEG C≤Temp2-Temp1≤20 DEG C.
5. the control circuit of outdoor fan of air-conditioner as claimed in claim 4, is characterized in that, also comprise:
Cross valve working state detection units, in order to detect the duty of air-conditioner cross valve to determine the mode of operation of air-conditioner.
6. an air-conditioner, comprises outdoor condenser, outdoor fan, it is characterized in that, also comprises the control circuit of the outdoor fan of air-conditioner according to any one of claim 1 to 5.
7. an outdoor fan control method for air-conditioning, is characterized in that, be applied to the control of outdoor fan under refrigeration mode, the outdoor fan control method of described air-conditioning comprises the following steps:
A0, outdoor fan of air-conditioner are when starting, and run a preset time T 1 with preset rotation speed, its span is 5-60 second; Described preset rotation speed is the most high-grade partially near rotating speed or the most high-grade rotating speed;
A. sensing chamber's external environment temperature value TempX when outdoor fan of air conditioner operates;
Between the regulatory region B. determining outdoor fan rotating speed according to outdoor environment temperature value TempX, export control instruction determination outdoor fan between regulatory region in original speed position value N1, and control the corresponding rotating speed operation of outdoor fan by N1 gear, gear value in described regulatory region has multiple, and this original speed position value N1 is positioned at middle gear place value between corresponding regulatory region or partially near intervening gears;
C. sensing chamber's external condenser coil temperature value TempY when outdoor fan of air conditioner operates, the outdoor condenser coil temperature value TempY detected and the reference temperature Temp1 preset and Temp2 are compared, in regulatory region, the rotating speed gear of adjustment outdoor fan is to obtain adjustment gear value N2:
As Temp1≤TempY≤Temp2, outdoor fan rotating speed gear is not adjusted;
As TempY<Temp1, one grade is reduced to outdoor fan gear, if reached the deep low gear place value in regulatory region, then no longer adjust;
As TempY>Temp2, one grade is risen to outdoor fan gear, if reached the most high-grade place value in regulatory region, then no longer adjust;
D. control outdoor fan according to adjustment of rotational speed gear value N2 to run by corresponding rotating speed.
8. outdoor fan control method as claimed in claim 7, is characterized in that, when outdoor environment temperature value TempX is larger, the original speed position value N1 in described regulatory region is larger, when TempX more hour, the interior original speed position value N1 of described regulatory region is less.
9. outdoor fan control method as claimed in claim 8, is characterized in that, also comprised before step C:
Outdoor fan runs a preset time T 2 with current gear rotating speed, and its span is 5-60 second.
10. outdoor fan control method as claimed in claim 9, its reference temperature Temp1 preset and Temp2 value, Temp1 scope: 15 DEG C-50 DEG C, Temp2 scope: 15 DEG C-50 DEG C, and Temp2>Temp1.
The outdoor fan control method of 11. air-conditionings according to any one of claim 7 to 10, is characterized in that, also comprise when outdoor fan of air conditioner operates before sensing chamber's external environment temperature value TempX:
Detect the duty of air-conditioner cross valve to determine the mode of operation of air-conditioner.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310100919.3A CN103175285B (en) | 2013-03-26 | 2013-03-26 | The control circuit of outdoor fan of air-conditioner, control method and air-conditioner |
| RU2015145181A RU2015145181A (en) | 2013-03-26 | 2013-06-09 | EXTERNAL AIR CONDITIONING FAN CONTROL CIRCUIT, CONTROL METHOD AND AIR CONDITIONING |
| PCT/CN2013/077044 WO2014153848A1 (en) | 2013-03-26 | 2013-06-09 | Control circuit of air conditioning outdoor fan, control method, and air conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310100919.3A CN103175285B (en) | 2013-03-26 | 2013-03-26 | The control circuit of outdoor fan of air-conditioner, control method and air-conditioner |
Publications (2)
| Publication Number | Publication Date |
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| CN103175285A CN103175285A (en) | 2013-06-26 |
| CN103175285B true CN103175285B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310100919.3A Active CN103175285B (en) | 2013-03-26 | 2013-03-26 | The control circuit of outdoor fan of air-conditioner, control method and air-conditioner |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103175285B (en) |
| RU (1) | RU2015145181A (en) |
| WO (1) | WO2014153848A1 (en) |
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| CN101893308A (en) * | 2010-07-08 | 2010-11-24 | 宁波奥克斯电气有限公司 | Method for controlling outdoor fan of air-conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202408A (en) * | 2017-06-21 | 2017-09-26 | 广东美的暖通设备有限公司 | Control method, device and the air-conditioning of rotating speed of air conditioner fan |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2015145181A (en) | 2017-05-03 |
| CN103175285A (en) | 2013-06-26 |
| WO2014153848A1 (en) | 2014-10-02 |
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