CN101086364A - Compressor control method of multi-split air conditioner - Google Patents
Compressor control method of multi-split air conditioner Download PDFInfo
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- CN101086364A CN101086364A CN 200610014096 CN200610014096A CN101086364A CN 101086364 A CN101086364 A CN 101086364A CN 200610014096 CN200610014096 CN 200610014096 CN 200610014096 A CN200610014096 A CN 200610014096A CN 101086364 A CN101086364 A CN 101086364A
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Abstract
The invention provides a compressor control method of a trailer multi-type air-conditioner, which comprises the following steps: the first step, detecting the operation pressure of the compressor by the pressure sensor according to the starting of the frequency changing compressor when the trailer multi-type air-conditioner is heat-produced; the second step, judging if the detected operation pressure in the first step reaches the upper and lower limit value range of the object pressure; the third step, starting the uniform speed compressor when the judged result in the second step reaches the lower limit value of the object pressure and stopping the operation of the uniform speed compressor when the judged result is more than the upper limit value of the object pressure. The invention also provides a compressor control method of a trailer multi-type air-conditioner. The invention corresponds the sudden load change of the indoor machine, which improves the operation property and safety of the air-conditioner.
Description
Technical field
The present invention relates to the compressor control method of one-driven-several type air-conditioner, particularly control compressor with correspondence load change rapidly, when heating running, make pressure reach the target high pressure rapidly, and when carrying out cooling operation, make pressure reach target low pressure rapidly, improve the compressor control method of one-driven-several type air-conditioner of the performance of air-conditioner thus.
Background technology
In the existing compressor assembly, use the revolution of inverter compressor, to reach the purpose that reduces refrigerating/heating output and save power consumption with different speed control compressors.This is because the system that does not use frequency-changeable compressor under rated voltage 220V (60Hz) condition, with the rotation speed operation of regulation, keeps the refrigeration output of regulation, thereby consumes unnecessary electric power.
Because described frequency-changeable compressor can reduce the revolution of compressor electric motor automatically when temperature reduces, reduce power consumption thus here.Thereby, can save 20%～30% power consumption with respect to the household appliances that do not use frequency-changeable compressor.
Therefore, adopted the compressor assembly of frequency-changeable compressor generally to be applied in the refrigerator or air-conditioner of economize on electricity type.Below, describe for the air-conditioner that uses this compressor assembly.
Fig. 1 is the programme diagram of control method of the compressor assembly of prior art.
The compressor assembly of existing air-conditioner is promoted to the highest frequency S2 that turns round with the operating frequency of described frequency-changeable compressor after starting frequency-changeable compressor S1.
Then, make the operating frequency of described frequency-changeable compressor reach peak frequency after, start at the uniform velocity compressor.At this moment, the frequency the when frequency that will reach the frequency-changeable compressor of peak frequency is reduced to primary starting, and start at the uniform velocity compressor S 3.
Described at the uniform velocity compressor obtains corresponding refrigerating/heating power S4 along with the increase and the minimizing of load start (ON) or stop (OFF) by the frequency of adjusting frequency-changeable compressor in the normal frequency scope.
That is, in the test running or the lower environment of temperature such as early morning of existing air conditioner compressor system after product is set, under high-frequency, start after the frequency-changeable compressor, control at the uniform velocity compressor successively.
But, comprising a lot of indoor sets, in 16 indoor set operation process, stop the indoor set of (OFF) 15 or in the process of 1 indoor set running (ON), when starting (ON) other 15 indoor loads such as indoor set and changing greatly, control successively at the uniform velocity the running of compressor will to cause reaching the required time of the target low pressure of setting or target high pressure longer.
Summary of the invention
The present invention is the problem in view of above-mentioned existence, its purpose is to provide a kind of compressor control method of one-driven-several type air-conditioner, it is in the product that the off-premises station that comprises a plurality of at the uniform velocity compressors connects side by side, the startup (ON) of corresponding indoor set/stop (OFF) and load variations rapidly, the control compressor, thus when heating running, can reach the target high pressure rapidly, and when carrying out cooling operation, target low pressure be can reach rapidly, thereby the performance and the reliability of product improved.
In order to achieve the above object, the technical solution used in the present invention provides a kind of compressor control method of one-driven-several type air-conditioner, this method comprised with the next stage: when heating of one-driven-several type air-conditioner turned round, along with the startup of frequency-changeable compressor, detect the 1st stage of the running pressure of described compressor by pressure sensor; Judge whether detected running pressure in described the 1st stage has reached the 2nd stage of the upper lower limit value scope of goal pressure; Result according to the 2nd stage was judged till the lower limit that reaches goal pressure, starts at the uniform velocity compressor, and when having surpassed the higher limit of described goal pressure, stops the 3rd stage structure of the running of described at the uniform velocity compressor.
This method also comprises when described running pressure reaches the upper lower limit value scope of described goal pressure, controls the process of the compressor more than 1 or 1 successively.
In described the 2nd stage, the higher limit of the upper lower limit value scope of described goal pressure equals 120% of goal pressure, and lower limit equals 80% of goal pressure.
The goal pressure of described compressor is 500kpa.
The compressor control method of one-driven-several type air-conditioner also is provided, and this method comprised with the next stage:
When the cooling operation of one-driven-several type air-conditioner,, detect the 1st stage of the running pressure of described compressor by pressure sensor along with the startup of frequency-changeable compressor; Judge whether detected running pressure in described the 1st stage has reached the 2nd stage of the prescribed limit up and down of goal pressure; Result according to the judgement of the 2nd stage, till the higher limit that reaches goal pressure, start at the uniform velocity compressor, and when having surpassed the lower limit of described goal pressure, the 3rd stage that stops the running of described at the uniform velocity compressor constitutes the compressor control method of the one-driven-several type air-conditioner of feature.
In described the 2nd stage, the higher limit of the upper lower limit value scope of described goal pressure equals 120% of goal pressure, and lower limit equals 80% of goal pressure.
This method also comprises when described running pressure reaches the upper lower limit value scope of described goal pressure, controls the process of the compressor more than 1 or 1 successively.
The goal pressure of described compressor is 1800kpa.
Effect of the present invention is that the control method of the compressor of the one-driven-several type air-conditioner that as above provides has been set goal pressure and its upper lower limit value, at the uniform velocity compressor continuously turns round till reaching this scope, the unexpected load variations of corresponding indoor set rapidly thus, stable compressor is provided, thereby can have improved the behavior in service and the reliability of air-conditioner.
Description of drawings
Fig. 1 is the programme diagram of control method of the compressor assembly of prior art;
Fig. 2 is the concise and to the point stereogram of one-driven-several type air-conditioner provided by the invention;
Fig. 3 is the composition diagram of air-conditioner provided by the invention;
Fig. 4 is the block diagram of composition of the compressor assembly of the one-driven-several type air-conditioner in one embodiment of the present of invention;
Fig. 5 is the programme diagram of the control method of the one-driven-several type cooler compressor in the one embodiment of the invention;
Fig. 6 is the programme diagram of the control method of the one-driven-several type cooler compressor that provides of another embodiment of the present invention.
Among the figure:
11,12,13,14: indoor set 21,22,23: off-premises station
51: indoor heat converter 54: indoor electromagnetic expanding valve
61: reservoir 62: frequency-changeable compressor
63: at the uniform velocity compressor 64: oil eliminator
65: cross valve 66: capillary
70: outdoor heat converter 74: outdoor electromagnetic expanding valve
80: apparatus for supercooling 90: liquid injection apparatus
107: pressure sensor
The specific embodiment
Below, be described in detail for embodiments of the invention in conjunction with the accompanying drawings.
Fig. 2 is the concise and to the point stereogram of one-driven-several type air-conditioner provided by the invention, Fig. 3 is the composition diagram of air-conditioner provided by the invention, Fig. 4 is the block diagram of composition of the compressor assembly of the one-driven-several type air-conditioner in one embodiment of the present of invention, Fig. 5 is the programme diagram of the control method of the one-driven-several type cooler compressor in the one embodiment of the invention, and Fig. 6 is the programme diagram of the control method of the one-driven-several type cooler compressor that provides of another embodiment of the present invention.
Simultaneously, in the one-driven-several type air-conditioner in one embodiment of the invention, a plurality of compressors can have a plurality of at the uniform velocity compressors of at the uniform velocity running to constitute, also can constitute by a plurality of frequency-changeable compressors of changed speed operation, but constitute by the frequency-changeable compressor that can carry out changed speed operation and several at the uniform velocity compressors that can at the uniform velocity turn round in this manual, and the off-premises station that comprises a plurality of at the uniform velocity compressors connects side by side.
One-driven-several type air-conditioner provided by the invention such as Fig. 2 or shown in Figure 3 are by not putting at the indoor a plurality of indoor sets 11,12 of building, 13,14 and with described indoor set 11,12,13,14 off- premises stations 21,22 that connect, 23 constitute, and described indoor set 11,12,13,14 and off- premises station 21,22,23 by coolant piping 30,40 connections, off- premises station 21,22,23 according to described indoor set 11,12, the requirement of a certain indoor set in 13,14 starts down, and along with described indoor set 11,12,13,14 desired refrigerating/heating capacity increase described off- premises station 21,22,23 running quantity and the running quantity that is arranged on the compressor on the described off- premises station 21,22,23 increase together.
Here, described indoor set 11,12,13,14 comprise: make refrigerant and room air carry out the indoor heat converter 51 of heat exchange; Be arranged on described indoor heat converter 51 near, make room air produce the indoor blower 52 of circulation; When air-conditioner freezes, make the indoor expansion valve 54 that expands to described indoor heat converter 51 mobile refrigerants.
And, described off- premises station 21,22,23 as shown in Figure 2, by the 1st, 2,3 off- premises stations 21,22,23 constitute, and comprising: the reservoir 61 that just extracts gaseous coolant from the refrigerant that indoor set provides; The gaseous coolant that receives described reservoir 61 extractions carries out compressor for compressing 62,63,67; Connect with described compressor 62,63, select the cross valve 65 of the flow path of compressed refrigerant; The outdoor heat converter 70 that makes refrigerant that described cross valve 65 provides and outdoor air carry out heat exchange constitutes.
Here, possessed frequency-changeable compressor 62 and compressor 63 at the uniform velocity on described the 1st off-premises station 21, and on the 2nd, 3 off-premises station, just possessed a plurality of at the uniform velocity compressors 67.Described frequency-changeable compressor 62 is the compressors that can change the compression volume of refrigerant, and described at the uniform velocity compressor 63,67th, the compressor that the compression volume of refrigerant is constant.
Simultaneously, described frequency-changeable compressor 62 is born 70% of described the 1st off-premises station 21 compression volumes, be arranged at the uniform velocity compressor 63 on the 1st off-premises station 21 and bear remaining 30% capacity, the at the uniform velocity compressor 67 of remaining off- premises station 22,23 is born 50% compression volume respectively.
Simultaneously, on the pipe arrangement that connects described compressor 62,63 and cross valve 65, be provided with oil eliminator 64, and described oil eliminator 64 is connected the suction side of described compressor 62,63.
At described oil eliminator 64 and described compressor 62,63, be provided with the pressure sensor 107 of the pressure of the refrigerant that is used to detect described compressor 62,63,67 outputs between 67 simultaneously.
Described oil eliminator 64 is separating oil from the refrigerant of described compressor 62,63 outputs, and the oil that will separate offers in the described compressor 62,63, makes the certain oil mass of compressor 62,63 inner sustain.And the suction side pipe arrangement of described oil eliminator 64 and described compressor 62,63 connects by capillary 66, and oil moves by described capillary 66 thus.
And, the refrigerant of described outdoor heat converter 70 outputs is guided to be provided with on the coolant piping 30 of described indoor heat converter 51 and when air-conditioner heats, make electromagnetic expanding valve 74 that refrigerant expands and the apparatus for supercooling 80 of the refrigerant that cooling is moved to indoor heat converter 51 when air-conditioner carries out cooling operation and the liquid injection apparatus 90 that is provided with in order to reduce described compressor 62,63.
Described outdoor magnetic valve 74 is open fully when air-conditioner carries out cooling operation, does not expand and just allows it pass through for the refrigerant of condensation on described outdoor heat converter; And when air-conditioner heats running, open the size of regulation, the refrigerant of condensation on the indoor heat converter 51 was expanded to the liquid of atomize before flowing into described outdoor heat converter 70.
Simultaneously, at coolant piping 30 " on be provided be used to remove described coolant piping 30 " drier of inner moisture, the refrigerant that has passed through drier is at described coolant piping 30 " go up circuitous after to described indoor heat converter 51 side flow.
As shown in Figure 4, the compressor assembly of the one-driven-several type air-conditioner in the embodiment of the invention comprises: several indoor sets 11,12,13,14; Detect the pressure detecting portion 200 of the running pressure of current compressor at start of run; The compressor control portion 300 of more described running pressure and target high pressure and target low pressure; The frequency-changeable compressor 62 that under the control of described compressor control portion, starts; At the uniform velocity compressor 63 more than one or one.
Described pressure detecting portion 200 detects current running high pressure by the press detection sensor that is arranged on the compressor outlet side.
And, described compressor control portion 300 calculates behind the pressure of the compressor that air-conditioner needs with current running high pressure and compares, judge described frequency-changeable compressor 62 and the at the uniform velocity running of compressor 63 (ON)/stop (OFF), and issue an order, start described frequency-changeable compressor 62 and compressor 63 at the uniform velocity.
And described frequency-changeable compressor 62 is by 300 controls of described compressor control portion.
That is, described frequency-changeable compressor 62 is passed in the order that described compressor control portion 300 transmits, and starts thus and the frequency adjustment.
And, described at the uniform velocity compressor 63 more than one or one is set when load increases, start according to the startup command of described compressor control portion 300.
For example, in 16 the indoor set operation process, stop the indoor set of (OFF) 15 or when the running of 1 indoor set, described compressor control portion 300 controlled described at the uniform velocity compressor successively when the load variations of the indoor set that running (ON) is 15 etc. was bigger.
But will reach target high pressure or target low pressure needs a lot of times, thereby has set target high pressure or target low pressure, and when surpassing this scope, (ON) described at the uniform velocity compressor 63 turns round till reaching this scope always.
As above the one-driven-several type cooler compressor control method in the embodiment of the invention of Gou Chenging is as follows.
Simultaneously, in the compressor control method in the embodiment of the invention of Fig. 5 and Fig. 6 record, to omitting with the part of above-mentioned repetition.
As shown in Figure 5, the control method of the compressor assembly in the embodiment of the invention comprises: heating when running at one-driven-several type air-conditioner, is the 1st stage S100 of initial stage frequency run with the frequency setting of frequency-changeable compressor 62; Detect the 2nd stage S200 of the current pressure of described frequency-changeable compressor 62 by press detection sensor; Judge whether the running pressure that is detected reaches the 3rd stage S300 of the upper lower limit value of air-conditioner goal pressure.
In described the 1st stage S100, described compressor control portion 300 sends after the order that described frequency-changeable compressor 62 starts, and is to start after the initial stage frequency with the frequency setting of frequency-changeable compressor 62.
At this moment, when the peak frequency of described frequency-changeable compressor was 100Hz, original frequency was 30% of peak frequency, i.e. 30Hz.
And described control part 300 is checked and is determined the described frequency-changeable compressor 62 and the actuating signal before of compressor 63 at the uniform velocity.
Here, described compressor control portion 300 is this foundation as next action control of decision, judges and determines described control part 300 to need to give described frequency-changeable compressor 62 and the control signal assigned of compressor 63 transmission at the uniform velocity.
Then, in described the 2nd stage S200, pressure detecting portion 200 is judged the current pressure of the frequency-changeable compressor 62 that starts by press detection sensor.
And, in described the 3rd stage S300, passed through the result that the 2nd stage S200 judges, when current running pressure does not reach the upper lower limit value of described goal pressure, judge that whether described current pressure is greater than higher limit or whether less than lower limit S350.
Then, according to the result who judges, start (ON) at the uniform velocity compressor 63 S352 reach the lower limit of described goal pressure up to described compressor control portion 300 till, and when above the higher limit of described goal pressure, stop (OFF) described at the uniform velocity compressor 63 S351.
Then, when described running pressure reaches the upper lower limit value scope of described goal pressure, control the compressor S 360 more than or successively.
Thus, can be corresponding because a plurality of indoor sets startups (ON)/stop the unexpected variation of the load that (OFF) cause, make pressure reach goal pressure rapidly.
Here, the higher limit of the upper lower limit value scope of described goal pressure is decided to be 120% of goal pressure, and lower limit is 80% of a goal pressure, and described goal pressure is 500kpa.
Simultaneously, described upper lower limit value is after product is set, in test running or when waiting outside air temperature to hang down in the morning, be reduced to the phenomenon of low pressure after avoiding described frequency-changeable compressor 62 directly to start suddenly with high-frequency, prevent that thus household appliances are in preheat mode for a long time, the phenomenon that can't normally start and ratio that distance proposes is not confined to the ratio that present embodiment proposes.
And as shown in Figure 6, the control method of the compressor assembly in the embodiment of the invention comprises: when one-driven-several type air-conditioner carries out cooling operation, be the 1st stage S100 of initial stage frequency run with the frequency setting of frequency-changeable compressor 62; Detect the 2nd stage S200 of the current pressure of described frequency-changeable compressor 62 by press detection sensor; Judge whether the running pressure that is detected reaches the 3rd stage S300 of the upper lower limit value of air-conditioner goal pressure.
In the 3rd stage S300, result according to described the 2nd stage S200 judgement, start (ON) at the uniform velocity compressor 63S353 reach the higher limit of described goal pressure up to described compressor control portion 300 till, and when surpassing the lower limit of described goal pressure, stop (OFF) described at the uniform velocity compressor 63S354.
Here, the higher limit of the upper lower limit value scope of described goal pressure is decided to be 120% of goal pressure, and lower limit is 80% of a goal pressure, and described goal pressure is 1800kpa.
As described above, control by compressor control portion 300, in described frequency-changeable compressor 62 initial start stage, for the unexpected load variations that the running (ON) of a plurality of indoor sets of correspondence/stop (OFF) causes is controlled compressor assembly, when current running pressure does not reach upper lower limit value, till reaching authorized pressure, start described at the uniform velocity compressor 63 fast, reach goal pressure thus rapidly.
Thereby,, till the running pressure of described compressor reaches the upper lower limit value of the necessary pressure of described cooler compressor, therefore can improve the behavior in service of air-conditioner owing to can start described at the uniform velocity compressor 63 fast.
In the superincumbent explanation accompanying drawings air-conditioner provided by the invention compressor assembly with and control method, but described embodiment and accompanying drawing are not limited to full content of the present invention, can use within interest field of the present invention.
Claims (8)
1, a kind of compressor control method of one-driven-several type air-conditioner, this method comprised with the next stage:
When heating of one-driven-several type air-conditioner turned round,, detect the 1st stage of the running pressure of described compressor by pressure sensor along with the startup of frequency-changeable compressor;
Judge whether detected running pressure in described the 1st stage has reached the 2nd stage of the upper lower limit value scope of goal pressure;
Result according to the 2nd stage was judged till the lower limit that reaches goal pressure, starts at the uniform velocity compressor, and when having surpassed the higher limit of described goal pressure, stops the 3rd stage structure of the running of described at the uniform velocity compressor.
2, control method according to claim 1 is characterized in that: also comprise when described running pressure reaches the upper lower limit value scope of described goal pressure, control the process of the compressor more than 1 or 1 successively.
3, control method according to claim 1 is characterized in that: in described the 2nd stage, the higher limit of the upper lower limit value scope of described goal pressure equals 1 20% of goal pressure, and lower limit equals 80% of goal pressure.
4, control method according to claim 1 is characterized in that: the goal pressure of described compressor is 500kpa.
5, a kind of compressor control method of one-driven-several type air-conditioner, this method comprised with the next stage:
When the cooling operation of one-driven-several type air-conditioner,, detect the 1st stage of the running pressure of described compressor by pressure sensor along with the startup of frequency-changeable compressor; Judge whether detected running pressure in described the 1st stage has reached the 2nd stage of the prescribed limit up and down of goal pressure; Result according to the judgement of the 2nd stage, till the higher limit that reaches goal pressure, start at the uniform velocity compressor, and when having surpassed the lower limit of described goal pressure, the 3rd stage that stops the running of described at the uniform velocity compressor constitutes the compressor control method of the one-driven-several type air-conditioner of feature.
6, control method according to claim 1 is characterized in that: in described the 2nd stage, the higher limit of the upper lower limit value scope of described goal pressure equals 120% of goal pressure, and lower limit equals 80% of goal pressure.
7, control method according to claim 1 is characterized in that: also comprise when described running pressure reaches the upper lower limit value scope of described goal pressure, control the process of the compressor more than 1 or 1 successively.
8, control method according to claim 1 is characterized in that: the goal pressure of described compressor is 1800kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014096 CN101086364A (en) | 2006-06-06 | 2006-06-06 | Compressor control method of multi-split air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014096 CN101086364A (en) | 2006-06-06 | 2006-06-06 | Compressor control method of multi-split air conditioner |
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| CN101086364A true CN101086364A (en) | 2007-12-12 |
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| CN 200610014096 Pending CN101086364A (en) | 2006-06-06 | 2006-06-06 | Compressor control method of multi-split air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152419A (en) * | 2016-08-16 | 2016-11-23 | 深圳万城节能股份有限公司 | The control method of air conditioning system |
| CN106871379A (en) * | 2017-03-30 | 2017-06-20 | 广东美的暖通设备有限公司 | Air-conditioning system and its compressor control method and device |
-
2006
- 2006-06-06 CN CN 200610014096 patent/CN101086364A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152419A (en) * | 2016-08-16 | 2016-11-23 | 深圳万城节能股份有限公司 | The control method of air conditioning system |
| CN106152419B (en) * | 2016-08-16 | 2019-01-29 | 深圳万城节能股份有限公司 | The control method of air-conditioning system |
| CN106871379A (en) * | 2017-03-30 | 2017-06-20 | 广东美的暖通设备有限公司 | Air-conditioning system and its compressor control method and device |
| CN106871379B (en) * | 2017-03-30 | 2019-12-03 | 广东美的暖通设备有限公司 | Air-conditioning system and its compressor control method and device |
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