CN1888654A - Method for controlling reverse-phase compressor in air conditioner - Google Patents
Method for controlling reverse-phase compressor in air conditioner Download PDFInfo
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- CN1888654A CN1888654A CN 200510014013 CN200510014013A CN1888654A CN 1888654 A CN1888654 A CN 1888654A CN 200510014013 CN200510014013 CN 200510014013 CN 200510014013 A CN200510014013 A CN 200510014013A CN 1888654 A CN1888654 A CN 1888654A
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Abstract
This invention relates to reverse phase controlling method of air conditioner. It includes: according the set positional cycle, the rotation state of reverse phase compressor is detected. The detected number is calculated; according to the operation situation of air conditioner system that influences the sensibility of air conditioner power management device, the critical values of the said detected number are respectively set as different values; if the said detected number exceeds critical value, the current speed and objective speed of the said compressor are compared. The current speed of the said compressor is adjusted. This invention can increase the operation time of air conditioner.
Description
Technical field
The present invention relates to reverse-phase compressor, detailed says so, suitably regulate PWM (the Pulse-Width Modulation of reverse-phase compressor, pulsewidth modulation) control method of the reverse-phase compressor of Duty (duty), more detail is, according to the mode of operation of air-conditioning system and the PWM Duty that provides in the reverse-phase compressor is provided respectively, make air-conditioning system not shut-down operation under external condition jumpy, thereby can make the control method of the reverse-phase compressor that above-mentioned air-conditioning system operates for a long time.
Background technology
General air-conditioner is processes such as the compression, condensation, expansion, evaporation by refrigerant, can force the machine of transfer of heat between machine intimate and machine exterior.Recently, be extensive use of above-mentioned air-conditioner in order to make the user have comfortable indoor environment, and switch to the positive direction of air-conditioning system or in the other direction, make it reach cold-room operation or greenhouse operation by cyclic process with refrigerant.Certainly, be applied to cold-room operation or greenhouse operation in order to make above-mentioned air-conditioner, the inside of above-mentioned air-conditioner is equipped with cubic valve, the flow direction of changeable above-mentioned refrigerant.And, will be connected with a plurality of indoor sets in the single off-premises station recently, can carry out air conditioning respectively to a plurality of interior spaces of being separated by the said system air conditioner structure by wall.
In addition, in order in the compressor of compression refrigerant, to compress the refrigerant of corresponding amount, be extensive use of the variable reverse-phase compressor of rotation number of compressor recently according to required air-conditioning heat.Because the rotation number of above-mentioned reverse-phase compressor is variable, so can reach the air conditioner surroundings that the user needs rapidly.Simultaneously, above-mentioned reverse-phase compressor can be at the refrigerant of the situation lower compression aequum that does not carry out on/off operation, thus the noise that produces can avoid the compressor ON/OFF time.Above-mentioned reverse-phase compressor will be regulated the rotation number of reverse-phase compressor, the refrigerant decrement of reverse-phase compressor according to the operating frequency of control compressor, and the air-conditioning heat of air-conditioner.
Above-mentioned reverse-phase compressor has different refrigerant decrements according to concrete air conditioner surroundings, has as the factor of decision air conditioner surroundings: the workbench number of the required target temperature of user, actual indoor temperature, actual outdoor temperature, indoor set etc.Therefore, when the user set required indoor temperature, air-conditioner will be according to the workbench number of actual indoor temperature, actual outdoor temperature, indoor set etc., determines the operating frequency of above-mentioned reverse-phase compressor, and carries out the running operation of compressor.And the said external condition will detect with certain cycle, and the operating frequency of above-mentioned reverse-phase compressor is then corresponding to above-mentioned air conditioner surroundings, have different values according to certain cycle, thereby can more promptly reach the required air conditioner surroundings of user.
In addition, in the control part of air-conditioner electric power controller is installed, IPS (Intelligent Power System-intelligent power system) for example is installed, deenergization in the time of can in air-conditioner is operated, receiving the excess load of moment.When in the air-conditioning system rapid power source change taking place, said elements is identified as it and breaks down, and stops the operation of air-conditioning system.
But under the situation that general load increases, above-mentioned electric power controller carries out maloperation often and disconnects the power supply of air-conditioning system, and above-mentioned power supply disconnects phenomenon will cause user's discontented to product easily.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the object of the present invention is to provide a kind of control method of reverse-phase compressor, can set the judgement cycle of different air conditioner load amounts according to the mode of operation of air-conditioning system respectively, thereby reduce the phenomenon that power supply disconnects under the normal condition.
And, the object of the present invention is to provide a kind of control method of reverse-phase compressor, can increase the operating time of normal air-conditioner operation, thereby improve the satisfaction of user when using product.
To achieve these goals, the control method of the reverse-phase compressor in the air-conditioner of the present invention is characterized in that, includes following several steps: detect the rotation status of reverse-phase compressor and calculate the step that detects number of times with set positional cycle; The mode of operation of the air-conditioning system that exerts an influence according to sensitivity to the electric power controller of air-conditioner, the critical value of above-mentioned detection number of times will be set at the step of different values respectively; When above-mentioned detection number of times exceeds critical value, compare the present speed and the target velocity of above-mentioned compressor and the step of regulating the present speed of above-mentioned compressor.
According to the control method of aforesaid reverse-phase compressor, can be under the user mode of air-conditioning system more suitable control electric power controller.
The control method of the reverse-phase compressor in according to the present invention can increase operating time of air-conditioner, and improves the satisfaction of user when using product.
And, set the adjustment cycle of different reverse-phase compressor operating frequencies according to the mode of operation of air-conditioner, thereby can regulate the sensitivity of electric power controller.
Description of drawings
Fig. 1 is the stereogram of the air-conditioning system among the present invention;
Fig. 2 is the drawing for the control structure that above-mentioned reverse-phase compressor is described;
Fig. 3 is the flow chart for the control method that the reverse-phase compressor among the present invention is described.
The critical piece description of reference numerals
1: reverse-phase compressor
The specific embodiment
The present invention will be described in detail with reference to the accompanying drawings, but the present invention is not confined to the embodiment of the following stated, in the category that does not exceed basic fundamental thought of the present invention, the operator of relevant industries can add, change, delete it, thereby draws other embodiment that includes basic fundamental thought of the present invention easily.
Fig. 1 is the stereogram of the air-conditioning system among the present invention.
With reference to above-mentioned accompanying drawing 1, it includes following several sections: the reverse-phase compressor 1 that is used for compression refrigerant; When cold-room is operated, operate, when greenhouse is operated, operate as condenser as evaporimeter, thus a plurality of indoor sets 12～16 that indoor temperature is controlled; When cold-room is operated, operate, when greenhouse is operated, operate as evaporimeter as condenser, thus the off-premises station 4 that indoor temperature is controlled; Be used to control a plurality of electronic valves (EEV:Electronic Expansion Valve) 7～11 of the cold medium flux that supplies to above-mentioned a plurality of indoor set 12～16; The refrigerant of the HTHP of the above-mentioned compressor 1 that will flow into by reservoir (accumulator) 2 is exported to the cubic valve (four way valve) 3 of above-mentioned a plurality of indoor set 12～16 or off-premises station 4 according to the mode of operation of cold/greenhouse; The machine oil that contains in the refrigerant that above-mentioned compressor 1 is discharged turns back to the direction of compressor 1, thereby prevents the not lubricant separator 6 of foot phenomenon of machine oil; The receiver (receiver) 5 that is used for coolant quantity in the maintenance system.
Below the as above mode of operation of the air-conditioning system of structure is described.Carrying out under the situation of cold-room operation, the gaseous coolant of the HTHP of compression will supply to cubic valve 3 by reservoir 2 in the above-mentioned compressor 1, and by above-mentioned cubic valve 3 and then supply to off-premises station 4.Then, above-mentioned off-premises station 4 carries out heat exchange with extraneous air, the high-pressure liquid refrigerant of normal temperature can be supplied to lubricant separator 6 by receiver 5.The machine oil that contains in 6 refrigerants with above-mentioned compression of said engine oil separator turns back to above-mentioned compressor 1 direction by capillary filter (capillary filter), thereby prevents the phenomenon of machine oil deficiency in the air-conditioning system.Wherein, the effect of said engine oil is: the contact site that can prevent the compressor interior fittings produces friction phenomenon.In addition, carry out being provided with said engine oil separator 6 in addition in order to make the machine oil that contains in the refrigerant turn back to above-mentioned compressor 1 in the process of squeeze operation at above-mentioned reverse-phase compressor.
Then, after controlling the flow of refrigerant respectively by above-mentioned electronic valve 7～11, will supply with the liquid refrigerants of low-temp low-pressure to each indoor set 12～16,12～16 of above-mentioned a plurality of indoor sets are operated as evaporimeter, and the interior space is cooled off.And the refrigerant of evaporation will turn back in the compressor 1 by above-mentioned cubic valve 3.At this moment, above-mentioned indoor set 12～16 will carry out the air-conditioning operation of individual to the zone of each selection.
When above-mentioned air-conditioning system is operated with the greenhouse mode of operation, the connection status of above-mentioned cubic valve 3 changes, and make the contrary direction circulation of refrigerant, and above-mentioned indoor set 12～16 will be operated as condenser, and above-mentioned off-premises station 4 is then operated as evaporimeter.
Simultaneously, above-mentioned a plurality of electronic valves 7～11 will determine opening degree according to the difference between capacity, duty, indoor temperature and the design temperature of each indoor set 12～16 that connects, thereby can supply with the refrigerant of appropriate amounts to above-mentioned each indoor set 12～16.In addition, above-mentioned reverse-phase compressor 1 will periodically be set its operating frequency according to the duty of indoor temperature, outdoor temperature, design temperature, indoor set etc.
Structure and control method thereof to above-mentioned reverse-phase compressor 1 describes below.
Fig. 2 is the drawing for the control structure that reverse-phase compressor is described.Operating structure below with reference to 2 pairs of above-mentioned reverse-phase compressors 1 of above-mentioned accompanying drawing describes.
Above-mentioned reverse-phase compressor 1 constitutes mutually by 3, and is wound with 3 coils at each on mutually, has the driving power of out of phase by connecting on above-mentioned 3 coils, and above-mentioned compressor is driven.Wherein, the driving power of supplying with in the above-mentioned compressor 1 will be controlled by anti-phase 22, and passes to compressor 1.As shown in the figure, above-mentioned anti-phase 22 by 6 switch elements (U, V, W, X, Y Z) constitutes, above-mentioned each switch element is connected in series in pairs, and supplies with driving power by three output lines to above-mentioned reverse-phase compressor 1.
And, also include the converter section (converter) 21 that is used for generating above-mentioned anti-phase 22 DC voltage of supplying with in the control structure of the present invention, above-mentioned converter section 21 is connected in the AC power end 20 of the inner input of product, can carry out rectification to the AC power of input, and supply in above-mentioned anti-phase 22.
More detailed says, as shown in the figure, on/off operation that above-mentioned converter section 21 will be by switch element (IGBT) and large value capacitor C discharge and recharge operation, generate the required High Level DC Voltage of driving of above-mentioned compressor 1.And, also include reactor (reactor) R that is used to improve power factor.
And, also include in the accompanying drawing 2: be used to drive above-mentioned converter section 21 and anti-phase 's 22 IGBT drive circuit 23, and anti-phase drive circuit 25.Above-mentioned IGBT drive circuit 23 can be controlled the open/close state of the switch element (IGBT) in the above-mentioned converter section 21 by control part 26 controls; In addition, above-mentioned anti-phase drive circuit 25 is by control part 26 control, can to 6 switch elements in above-mentioned anti-phase 22 (U, V, W, X, Y, open/close state Z) is controlled.In order to generate the normal voltage that is used to drive above-mentioned compressor 1, above-mentioned anti-phase drive circuit 25 will often be exported data and receive in 6 above-mentioned anti-phase 22 switch elements.Wherein, the normal output data of above-mentioned input are the data of the target operating frequency correspondence of the compressor of decision in the above-mentioned control part 26.Then, above-mentioned anti-phase drive circuit 25 is regulated by the Duty of pwm signal, will regulate the target operating frequency of above-mentioned compressor 1.
And above-mentioned DC power supply test section 24 detects the size of curtage that sends anti-phase 22 dc source from above-mentioned converter section 21 to, and sends detected result to above-mentioned control part 26.The operating frequency of 26 pairs of above-mentioned reverse-phase compressors 1 of above-mentioned control part monitors, above-mentioned operating frequency is controlled in the integrated operation of air-conditioner, and made reverse-phase compressor or indoor/outdoor fan etc. carry out suitable operation according to external conditions such as detected outdoor temperature and/or indoor temperature in the test section 27.In addition, the operating frequency of the operation correspondence of above-mentioned compressor will be detected by a plurality of sensors that form between the gyrator of compressor and the stator, send detection signal to control part 26 by the sensor, thereby can confirm above-mentioned operating frequency.Preferably, the sensor forms with the angle of 60 degree, can will transmit 6 detection signals to above-mentioned control part 26 when once rotating.
And, in the above-mentioned control part 26 set electric power controller is installed, IPS (Intelligent Power System-intelligent power system) for example is installed, and is used for managing the power supply that air-conditioner is supplied with, can deenergization under the situation such as electric leakage take place.
The present invention is characterized in that the control method of above-mentioned reverse-phase compressor, and the reverse-phase compressor among the present invention is characterised in that, the cycle that is used to regulate the PWM Duty change of reverse-phase compressor operating frequency is set with different values respectively according to the mode of operation of air-conditioner.
Fig. 3 is the flow chart for the control method that the reverse-phase compressor among the present invention is described.
With reference to above-mentioned accompanying drawing 3, in the control method of reverse-phase compressor of the present invention, at first, detect the rotation status (St 11) of the gyrator that is provided with in the above-mentioned reverse-phase compressor 1 by sensor.In addition, because the sensor of above-mentioned gyrator forms with 60 intervals of spending, gyrator will carry out No. six times the sensor detecting operation when rotating one time, and the detecting operation of the sensor will be calculated (St12) by accumulation.Wherein, the sensor can be provided with by other cycle, but not the cycle of the degree of 60 in the present embodiment.
In addition, the control method of the reverse-phase compressor among the present invention is characterized in that, under the situation that air-conditioning system is operated with specific operating condition, minimizing is used to regulate the cycle of the operating frequency of reverse-phase compressor.For example, under responsive situation such as operation such as CT control (the Current Total control) electric power controller of etc.ing, when opening door or off-premises station and close, air-conditioner is in the overburden state, the adjustment cycle of the operating frequency of weak point detection reverse-phase compressor.This be because, above-mentioned electric power controller judges according to the additional quantity of required electric power whether electric leakage waits situation, but in the one action frequency in the adjustment time, when if sharply the operating load that increases causes sharply increasing required electric power, above-mentioned electric power controller is judged as it electric leakage accident under the situation of normal running.In addition, also under the situation of excess load, above-mentioned air-conditioning system is not stopped and proceeding the operation.
Thus, will set different operating frequency adjustment cycles according to the mode of operation of air-conditioner, as mentioned above, in carrying out CT control (St 13); The rate of temperature change of indoor comb is for to a certain degree more than the Δ P1 (St 14); The rate of temperature change of outdoor comb is under the situation of to a certain degree Δ P2 above (St15), is certain times N 2 when above when detecting number of times, the detected detection number of times of gyrator sensor is reset to zero (St 18) and proceeds operate.In addition, under the situation in contrast,, the detected detection number of times of gyrator sensor is reset to zero (St 18) and proceeds operation when above-mentioned detection number of times is certain times N 1 when above.Above-mentioned N1 and N2 are the critical values of set compressor rotation number that is used to regulate the operating frequency of reverse-phase compressor.
Wherein, learn that easily above-mentioned N1 is bigger than N2, this be because, under the bigger state of the temperature variation of CT control and/or indoor/outdoor comb, will (for example, IPS) sensitivity detects the variation of electric power, and can disconnect the power supply of air-conditioner easily by electric power controller.And, short when interval when gyrator rotation, need to regulate the speed of compressor and/or PWM Duty and can prevent that just electric power controller from operating.
After resetting above-mentioned detection number of times (St 18), the rotary speed of utilizing the above-mentioned detection number of times that draws and calculating current compressor detection time, and the rotary speed and the target rotational speed of the current compressor that aforementioned calculation is gone out compare (St 19), the result who in above-mentioned steps (St 19), compares, if current rotary speed during greater than target rotational speed, will reduce said PWM Duty value (St 21); The result who compares in above-mentioned steps St 19 when being not more than target rotational speed as if current rotary speed, then increases said PWM Duty value (St 20).By the operating frequency of adjusting said PWM Duty value and then adjusting above-mentioned compressor, thereby can change the decrement of refrigerant and the load of air conditioning by compressor.
Behind above-mentioned steps adjusting PWM Duty, whether decision makes air-conditioning system proceed operation, when proceeding to operate, with turning back to the position probing step (St 11) of gyrator, then finishes the control method among the present invention during reverse situation.
As mentioned above, the present invention electric power controller may sensitive operation situation under, can change the above-mentioned PWM Duty that is used to control the rotary speed of compressor rapidly, thereby can prevent the phenomenon that air-conditioner stops suddenly.In addition, though air-conditioner because electric power controller and shut-down operation also can make above-mentioned air-conditioner prolong before stopping and operating, thereby satisfaction and convenience when the raising user uses product.
Claims (3)
1, the control method of the reverse-phase compressor in a kind of air-conditioner is characterized in that, comprises following several steps:
Detect the rotation status of reverse-phase compressor and calculate the step that detects number of times with set positional cycle;
The mode of operation of the air-conditioning system that exerts an influence according to sensitivity to the electric power controller of air-conditioner, the critical value of above-mentioned detection number of times will be set at the step of different values respectively;
When above-mentioned detection number of times exceeds critical value, compare the present speed and the target velocity of above-mentioned compressor, and regulate the step of the present speed of above-mentioned compressor.
2, the control method of the reverse-phase compressor in the air-conditioner according to claim 1 is characterized in that:
Above-mentioned critical value in the CT of air-conditioner control situation and/or the rate of temperature change condition with higher of the rate of temperature change condition with higher of outdoor comb and/or indoor comb under will low setting.
3, the control method of the reverse-phase compressor in the air-conditioner according to claim 1 is characterized in that:
Above-mentioned detection number of times increases once when the every rotation 60 of above-mentioned gyrator is spent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014013 CN1888654A (en) | 2005-06-27 | 2005-06-27 | Method for controlling reverse-phase compressor in air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510014013 CN1888654A (en) | 2005-06-27 | 2005-06-27 | Method for controlling reverse-phase compressor in air conditioner |
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| CN1888654A true CN1888654A (en) | 2007-01-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864551A (en) * | 2015-04-30 | 2015-08-26 | 广东美的制冷设备有限公司 | Wearable equipment, intelligent control equipment, air-conditioner system and control method |
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- 2005-06-27 CN CN 200510014013 patent/CN1888654A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864551A (en) * | 2015-04-30 | 2015-08-26 | 广东美的制冷设备有限公司 | Wearable equipment, intelligent control equipment, air-conditioner system and control method |
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Open date: 20070103 |