CN1892132A - Air-conditioner and control method - Google Patents
Air-conditioner and control method Download PDFInfo
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- CN1892132A CN1892132A CN 200510014421 CN200510014421A CN1892132A CN 1892132 A CN1892132 A CN 1892132A CN 200510014421 CN200510014421 CN 200510014421 CN 200510014421 A CN200510014421 A CN 200510014421A CN 1892132 A CN1892132 A CN 1892132A
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Abstract
The present invention discloses air conditioner and control method for preventing indoor fan electromotor rotation speed variation. It includes indoor fan for regulating indoor air driven by motor, indoor unit controller for generating indoor fan motor driving signal using mean value as reference through generating phase sensitive signal for sensing input current and average distributing phase sensitive signal generation time, therefore capable of constant keeping indoor fan motor rotation speed and minimizing rotation speed variation.
Description
Technical field
The invention belongs to filed of air conditioning, particularly relate to a kind of for the air-conditioner that prevents to carry out the indoor fan motor rotating speed change that room air is regulated, calculate to check and accept behind certain phase delay time and control method thereof.
Background technology
In general, air-conditioner is: for more comfortable indoor environment is provided to the user, and by a certain amount of refrigerant of compression, evaporation and condensation, the machine that utilizes the freeze cycle of refrigerant to freeze or heat.
Fig. 1 is the formation rough schematic of common air-conditioning device.
Air-conditioner is made of off-premises station 6 and indoor set 7.Off-premises station 6 comprise by conversion refrigeration or heat running cross valve 2, with the compressor 1 of refrigerant boil down to high-temperature high-pressure state, the refrigerant and the outdoor air of compressor 1 compression carried out heat exchange, the outdoor heat converter 4 of warm high-pressure liquid refrigerant in being condensed into; Expand through the refrigerant of outdoor heat converter 4, the refrigerant decompression is the expansion valve 3 of low-temp low-pressure state; Outdoor fan 5 to outdoor discharge outdoor heat converter 4 liberated heats constitutes.
In addition, indoor set 7 comprises by passing through refrigerant conduit (not shown) and being connected with off-premises station 6, and makes through the refrigerant of expansion valve 3 and the indoor heat converter 8 that room air carries out heat exchange; The indoor fan 9 of the cold air of emitting to indoor discharge indoor heat converter 8 constitutes.
Therefore, indoor set 7 is to utilize the indoor fan 9 is connected with fan electromotor to the indoor blowing, and the air quantity when discharging determines by the rotating speed of fan electromotor, according to the control instruction of importing, if the rotating speed of fan electromotor is set, be maintained the invariablenes turning speed of setting best.
But, the general air-conditioner of Gou Chenging like this, fan electromotor because of around the error of circuit or temperature characterisitic can not the stable maintenance rotating speed, might change.
Therefore, the air-conditioner of prior art is in order to solve above-mentioned shortcoming in the following ways.Fig. 2 is the oscillogram of the phase control signal of prior art air-conditioner.
The prior art air-conditioner is equipped with and is connected with indoor fan motor and imports the solid-state relay of working power to motor, control solid-state relay closed or the control part that disconnection operates.
Control part is in order periodically to produce the phase place perceptual signal to the motor power supply, and the phase place perceptual signal is a benchmark through t after a while from the low-level starting point b that changes high level (rising signals) into, then produce for the control signal b ' that makes solid-state relay running (connection) is back and transmit, and maintain certain level by these rotating speeds with indoor fan motor to solid-state relay.
But, like this prior art air-conditioner of running, the integrated circuit that produces the phase place perceptual signal is because of the temperature characterisitic of self or the width variation of the characteristic waveform of circuit on every side.
Promptly, as shown in Figure 2, the situation of exporting the phase place perceptual signal with the integrated circuit of normal operation is opposite, if the phase place perceptual signal of integrated circuit output is wide than the width of normal signal, the starting point b of the point of climb a of phase place perceptual signal during than normal signal early, the Zao output of signal b ' that so the point of climb a of phase place perceptual signal is a phase place that benchmark calculates when delaying signal a ' too than normal signal, solid-state relay is running (connection) ahead of time.
In addition, if the phase place perceptual signal of integrated circuit output is narrow than the width of normal signal, the point of climb c of phase place perceptual signal starting point b evening during than normal signal, so phase place is delayed signal c ' and is proofreaied and correct regular signal b ' output in evening too, the starting point delay of solid-state relay running (connections).
As a result, according to phase place perceptual signal change, point of climb also changes, and the starting point of solid-state relay running (connection) changes according to these, so the rotating speed of indoor fan motor has change.
Summary of the invention
The present invention provides a kind of by the starting point that detects and average phase perceptual signal level changes for solving the technical problem that exists in the prior art, average starting point is that benchmark is exported the solid-state relay signal after after a while, under the situation of the impulse amplitude of phase place perceptual signal change, also air-conditioner and the control method thereof that the invariablenes turning speed of indoor fan motor can be kept.
The technical scheme that the present invention takes for the technical problem that exists in the solution prior art is: air-conditioner of the present invention comprises by rotating under the driving force effect of motor, carries out the indoor fan that room air is regulated; If be produced as the phase place perceptual signal of perception input current phase place in addition, behind the generation time of mean allocation phase place perceptual signal, be the indoor set control part formation of benchmark generating chamber internal fan motor drive signal with mean value.
In addition, the control method of air-conditioner of the present invention comprises the 1st stage from low-level to the high level change by perception input phase perceptual signal; Calculate the 2nd stage in phase place delay time by each starting point of change signal of average perceived; The 3rd stage that is produced as the driving signal that drives the indoor set fan electromotor according to the phase place delay time of calculating constitutes.
Advantage and good effect that the present invention has are:
Air-conditioner of the present invention and control method thereof, after the starting point of the level change of detected phase perceptual signal, the starting point that calculates detection is average, institute thinks that drive chamber's internal fan maintains certain level motor-driven fiducial time, the rotating speed of indoor fan motor can constant keeping, even and also energy minimization under the situation of earthquake.
Description of drawings
Fig. 1 is the formation schematic diagram of common air-conditioning device;
Fig. 2 is the oscillogram of the air-conditioner phase control signal of prior art;
Fig. 3 is the inner block diagram that constitutes of air conditioner room unit of the present invention;
Fig. 4 is the oscillogram of air-conditioner phase control signal of the present invention;
Fig. 5 is an air-conditioner control method programme diagram of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with drawings and Examples.
Fig. 3 is the inner block diagram that constitutes of air conditioner room unit of the present invention, and Fig. 4 is an air-conditioner phase control signal oscillogram of the present invention.
Indoor set of the present invention comprises the indoor fan 10 of carrying air by being equipped with motor as shown in Figure 3, and the indoor set control part 20 of control room internal fan 10 runnings constitutes.
At this moment, when indoor set control part 20 operates at indoor fan motor, change and the generation time of average phase perceptual signal, and the average time is that benchmark produces the also driving signal of transfer chamber internal fan 10 motors after after a while in order to prevent rotating speed.
Such indoor set control part 20 comprises by producing according to the level of phase place perceptual signal or the phase control division 21 of the drive control signal of transfer chamber internal fan 10 motors; Be connected with indoor fan 10 motors, and according to the signal running of phase control division 21 transmission or stop [connecting or close], the solid-state relay 22 of indoor fan 10 motor turn-on powers constituted.
Solid-state relay 22 is the relays that use the semiconductor element oncontacting to reveal in the circuit switching portion of relay, in 1 transistor package, will import, to open and close the outlet side of function integrated for output circuit insulation or the input side that separates and the high load capacity that has that is made of semiconductor, so it is faster than mechanical relay reaction speed, when opening or stopping [connecting or close], there is not noise during running, semi-conductive output and integration have long, reliability advantages of higher of life-span easily thus.
The level that phase control division 21 includes perception phase place perceptual signal changes high level or low-level signal detecting part 25 formations into, signal detecting part 25 is perceived as rising signals at the phase place perceptual signal high-caliber the time from low-level changing into, change to be perceived as dropping signal low-level the time into from high level, and each of detection senses rises and the starting point of dropping signal.
In addition, after phase control division 21 comprises starting point by the rising of average signal test section 25 transmission and dropping signal, be that the delay calculating part 26 that benchmark calculates to the phase delay time that drives solid-state relay constitutes with average starting point.
Promptly, after delay calculating part 26 is judged the level of the phase place perceptual signal of importing, detect and rise and the starting point of dropping signal perception and the starting point of average detected, but owing to want average signal is 2, if calculate the mean value of 2 signals, just can calculate rise and dropping signal between the starting point in 1/2 place, this starting point that to be the phase place perceptual signal begin with the input current of indoor set is the point that benchmark utilization rising and letdown point symmetry produce.
Therefore, shown in Fig. 4 a and Fig. 4 b, the integrated circuit that produces the phase place perceptual signal produces the phase place perceptual signal T1 that width has nothing in common with each other because of self or the influence in loop on every side, T2, also can make under the rising of the phase place perceptual signal that produces and situation that the dropping signal starting point has nothing in common with each other and rise and the average starting point T1 ' of dropping signal, T2 ' is always maintained at unanimity, so these are benchmark behind t after a while, if the driving solid-state relay can prevent the rotating speed of motor change.
In addition, phase control division 21 also comprises by detecting start point data for the rising of storage assembly test section 25 transmission and dropping signal and postponing the phase delay time memory of data 27 that calculating part 26 calculates and constituting.
Running of the present invention as constituted above is as follows.Fig. 5 is an air-conditioner control method programme diagram of the present invention.
At first, according to the electric current of importing in the indoor machine fan motor, the phase place perceptual signal produces and input.(S1)
The level change of the phase place perceptual signal of perception input.At this moment, if its level of phase place perceptual signal then is perceived as rising signals from the low-level high level that changes into, and if change into low-levelly from high level, be perceived as dropping signal, detect in addition and rise and the starting point of dropping signal perception.(S2)
Calculate the average time of each starting point of detection, and be that the worthwhile certain hour of benchmark is estimated phase delay time the average time of calculating.At this moment, also can calculate average time by calculating the computational methods of calculating after the impulse amplitude of phase place perceptual signal that are equivalent to impulse amplitude 1/2 starting point from the rising that detects and dropping signal starting point.(S3，S4)
Then, judge whether the time that up to the present starting point that the phase place perceptual signal changes from high level begins crosses behind the phase delay time that process is calculated, if crossed phase delay time, in order to operate (connection) solid-state relay to the indoor fan motor turn-on power, if do not have phase delay time in addition, make solid-state relay keep closed condition.(S5 to S7)
As mentioned above, air-conditioner of the present invention and control method thereof are illustrated in conjunction with the accompanying drawings, rise and letdown point average but also can calculate under the situation that different pulse amplitude signal produces, institute thinks that the constant the technology of the present invention thought kept of energy fiducial time of drive chamber's internal fan motor used by one of ordinary skill in the art easily.
Claims (7)
1, a kind of air-conditioner comprises that indoor set, off-premises station, refrigerant conduit constitute; Indoor set is included in the driving force effect rotation down of motor, carries out the indoor fan that room air is regulated; It is characterized in that also comprising if be produced as the phase place perceptual signal of perception input current phase place, behind the generation time of mean allocation phase place perceptual signal, is the indoor set control part of benchmark generating chamber internal fan motor drive signal with mean value.
2, air-conditioner according to claim 1 is characterized in that the indoor set control part comprises the phase control division that is produced and be transmitted as the control signal of control driving indoor fan motor by the level according to the phase place perceptual signal; Be connected with indoor fan motor, and constitute according to the solid-state relay of phase control division control signals transmitted drive motors.
3, air-conditioner according to claim 2 is characterized in that phase control division comprises by the signal detecting part of perception phase place perceptual signal to high level or low-level transformation level (rise, descend); The rising and the dropping signal starting point of average signal test section transmission, and be that the delay calculating part that benchmark calculates to the phase delay time that drives solid-state relay constitutes with average starting point.
4, air-conditioner according to claim 3 is characterized in that phase control division also comprises by for storing from the rising and the dropping signal start point data of signal detecting part transmission and postponing the phase delay time memory of data that calculating part calculates.
5, a kind of control method of air-conditioner is characterized in that comprising by perception input phase perceptual signal the 1st stage from low-level to the high level change; Calculate the 2nd stage of phase delay time by each starting point of change signal of average perceived; The 3rd stage that is produced as the driving signal that drives the indoor set fan electromotor according to the phase place delay time of calculating constitutes.
6, the control method of air-conditioner according to claim 5, it is characterized in that the 2nd stage comprise by according to the level of the change signal detection phase place perceptual signal in the 1st stage to the starting point of high level change (rising) with to the signal detection process of the starting point of low-level change (decline); Calculate each starting point average time of detection, and be that delay that the worthwhile certain hour of benchmark is calculated phase delay time is calculated process and constituted the average time of calculating.
7, the control method of air-conditioner according to claim 5, it is characterized in that in the 3rd stage, after whether judgement passes through phase delay time from the starting point time up to the present of high level change, if crossed phase delay time, operate (connection) solid-state relay in order to drive indoor fan motor, if do not pass through phase delay time in addition, keep the solid-state relay closed condition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014421 CN1892132A (en) | 2005-07-07 | 2005-07-07 | Air-conditioner and control method |
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| CN 200510014421 CN1892132A (en) | 2005-07-07 | 2005-07-07 | Air-conditioner and control method |
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| CN1892132A true CN1892132A (en) | 2007-01-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135608A (en) * | 2012-04-26 | 2015-12-09 | 中山大洋电机股份有限公司 | Constant-air-quantity control method for motor and air conditioner fan system |
| CN105180353A (en) * | 2012-04-26 | 2015-12-23 | 中山大洋电机股份有限公司 | Constant wind volume control method for motor and air conditioner fan system |
| CN105402863A (en) * | 2015-12-31 | 2016-03-16 | 美的集团武汉制冷设备有限公司 | Air capacity control method and air capacity control device for air conditioner and air conditioner |
| CN105402864A (en) * | 2015-12-31 | 2016-03-16 | 美的集团武汉制冷设备有限公司 | Air capacity control method and air capacity control device of air conditioner, and air conditioner |
| CN106196421A (en) * | 2016-06-24 | 2016-12-07 | 珠海格力电器股份有限公司 | The control method of air-conditioner, Apparatus and system |
| CN107655151A (en) * | 2017-10-10 | 2018-02-02 | 天津大学 | A kind of air-conditioner water system feedforward control time computational methods transmitted based on flowing |
-
2005
- 2005-07-07 CN CN 200510014421 patent/CN1892132A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135608A (en) * | 2012-04-26 | 2015-12-09 | 中山大洋电机股份有限公司 | Constant-air-quantity control method for motor and air conditioner fan system |
| CN105180353A (en) * | 2012-04-26 | 2015-12-23 | 中山大洋电机股份有限公司 | Constant wind volume control method for motor and air conditioner fan system |
| CN105402863A (en) * | 2015-12-31 | 2016-03-16 | 美的集团武汉制冷设备有限公司 | Air capacity control method and air capacity control device for air conditioner and air conditioner |
| CN105402864A (en) * | 2015-12-31 | 2016-03-16 | 美的集团武汉制冷设备有限公司 | Air capacity control method and air capacity control device of air conditioner, and air conditioner |
| CN105402864B (en) * | 2015-12-31 | 2018-03-27 | 美的集团武汉制冷设备有限公司 | Air quantity control method, air quantity controller and the air conditioner of air conditioner |
| CN105402863B (en) * | 2015-12-31 | 2018-11-20 | 美的集团武汉制冷设备有限公司 | Air quantity control method, air quantity controller and the air conditioner of air conditioner |
| CN106196421A (en) * | 2016-06-24 | 2016-12-07 | 珠海格力电器股份有限公司 | The control method of air-conditioner, Apparatus and system |
| CN106196421B (en) * | 2016-06-24 | 2019-01-08 | 珠海格力电器股份有限公司 | The control method of air conditioner, apparatus and system |
| CN107655151A (en) * | 2017-10-10 | 2018-02-02 | 天津大学 | A kind of air-conditioner water system feedforward control time computational methods transmitted based on flowing |
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