CN103378770A - Compressor starting circuit, air conditioner and compressor starting method - Google Patents
Compressor starting circuit, air conditioner and compressor starting method Download PDFInfo
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- CN103378770A CN103378770A CN2012101196778A CN201210119677A CN103378770A CN 103378770 A CN103378770 A CN 103378770A CN 2012101196778 A CN2012101196778 A CN 2012101196778A CN 201210119677 A CN201210119677 A CN 201210119677A CN 103378770 A CN103378770 A CN 103378770A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003990 capacitor Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004378 air conditioning Methods 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The invention discloses a compressor starting circuit, an air conditioner and a compressor starting method, wherein the compressor starting circuit comprises the following components: a first capacitor connected between a first electrode of the power supply and a starting end of the compressor; a current regulator connected between a first electrode of the power supply and an operating end of the compressor; the second capacitor is connected between the first electrode of the power supply and the starting end of the compressor in parallel with the first capacitor through a second capacitor branch; and the control switch is connected in series in the second capacitor branch. By the invention, the effect of shortening the starting time of the air-conditioning compressor is achieved.
Description
Technical field
The present invention relates to field of household appliances, in particular to a kind of compressor start circuit, air conditioner and compressor start method.
Background technology
In the prior art, compressor of air conditioner is longer start-up time when work, because starting current is 6 to 8 times of rated current, so start-up time, long meeting cause very large impact to electrical network, and simultaneously, long-time startup also can reduce the useful life of compressor.
For compressor of air conditioner long problem start-up time in the correlation technique, effective solution is proposed not yet at present.
Summary of the invention
The invention provides a kind of compressor start circuit, air conditioner and compressor start method, to solve at least compressor of air conditioner long problem start-up time.
To achieve these goals, according to an aspect of the present invention, provide a kind of compressor start circuit.
Compressor start circuit according to the present invention comprises: the first electric capacity, be connected between the start end of the first electrode of power supply and compressor, and also comprise: current regulator is connected between the operation end of the first electrode of power supply and compressor; The second electric capacity, by the second capacitive branch and the first Capacitance parallel connection be connected between the start end of the first electrode of power supply and compressor; And control switch, be connected in the second capacitive branch.
Further, control switch is relay, and the common port contact of relay is connected to the first electrode of power supply, and normally-closed contact connects the operation end of compressor, and normally opened contact connects the second end of the second electric capacity.
Further, circuit also comprises: contactor is connected between the common port of the second electrode of power supply and compressor.
Further, circuit also comprises: controller is connected with common port contact, contactor and the current regulator of relay.
Further, circuit also comprises: zero-crossing detector, first end are connected to the second electrode of power supply, and the second end is connected to controller, and control contactor was connected when controller detected the first electrode zero passage of power supply at zero-crossing detector.
Further, circuit also comprises: start and finish checkout gear, first end is connected to the start end of compressor, the second end is connected to controller, and the controller state that control relay is connected with normally opened contact from the common port contact after startup is finished checkout gear and detected compressor start and finish switches to the state that open terminal contacts is connected with normally-closed contact.
Further, controller comprises: single-chip microcomputer or central processing unit.
To achieve these goals, according to another aspect of the present invention, provide a kind of air conditioner, this air conditioner comprises compressor and controls the compressor start circuit of this compressor that wherein, the compressor start circuit is any compressor start circuit among the present invention.
To achieve these goals, according to a further aspect of the invention, provide a kind of compressor start method.The method comprises: with the two ends of the second Capacitance parallel connection to the first electric capacity, wherein, the second electric capacity, by the second capacitive branch and the first Capacitance parallel connection be connected between the start end of the first electrode of power supply and compressor; And regulate current regulator until compressor start is finished, wherein, contactor is connected between the operation end of the first electrode of power supply and compressor.
Further, with the second Capacitance parallel connection after the two ends of the first electric capacity, said method also comprises: closed contactor when the power supply zero passage, wherein, contactor is connected between the common port of the second electrode of power supply and compressor.
Further, said method also comprises: after finishing compressor start, disconnect the second electric capacity; And/or with the current regulator short circuit.
By the present invention, when starting, incorporate start-up capacitance into and adjust the method for compressor start electric current by current regulator owing to adopt, solved compressor of air conditioner long problem start-up time, and then reached and shorten the compressor of air conditioner effect of start-up time.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is compressor of air conditioner start-up circuit figure in the prior art;
Fig. 2 is the circuit diagram according to the compressor start circuit of the embodiment of the invention;
Fig. 3 is the circuit diagram according to the compressor start circuit of first preferred embodiment of the invention;
Fig. 4 is the circuit diagram according to the compressor start circuit of second preferred embodiment of the invention;
Fig. 5 is the circuit diagram according to the compressor start circuit of third preferred embodiment of the invention;
Fig. 6 is the circuit diagram according to the compressor start circuit of four preferred embodiment of the invention;
Fig. 7 is the circuit diagram according to the compressor start circuit of fifth preferred embodiment of the invention;
Fig. 8 is the compressor start circuit according to fifth preferred embodiment of the invention; And
Fig. 9 is the flow chart according to the compressor start method of the embodiment of the invention.
Embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Fig. 1 is compressor of air conditioner start-up circuit figure in the prior art, as shown in Figure 1, air-conditioning is starting moment, starting current is 6-8 times of rated current, start and be generally several seconds, large like this starting current is very large to the impact of electrical network in seconds, also will produce harm to compressor, affects the useful life of compressor.
The embodiment of the invention provides a kind of compressor start circuit, below compressor start circuit that the embodiment of the invention is provided be introduced.
Fig. 2 is the circuit diagram according to the compressor start circuit of the embodiment of the invention.
As shown in Figure 2, this compressor start circuit comprises the first electric capacity 21, current regulator 22, the second electric capacity 23 and control switch 24.
The first electric capacity 21 is connected between the start end of the first electrode of power supply and compressor.
In the present embodiment, the first electrode of power supply can be the zero line side of AC power.
The second electric capacity 23 is connected in parallel by the second capacitive branch and the first electric capacity 21 between the start end of the first electrode of power supply and compressor.
In the present embodiment, adopt and when starting, to incorporate start-up capacitance into and to adjust the method for compressor start electric current by current regulator, solved compressor of air conditioner long problem start-up time, and then reached and shorten the compressor of air conditioner effect of start-up time.
Fig. 3 is the circuit diagram according to the compressor start circuit of first preferred embodiment of the invention.This embodiment can be used as the preferred implementation of above-described embodiment.
As shown in Figure 3, this compressor start circuit comprises the first electric capacity 21, current regulator 22, the second electric capacity 23 and control switch 24, and wherein, control switch 24 can be relay 25.
The common port contact of relay 25 is connected to the first electrode of power supply, and normally-closed contact connects the operation end of compressor, and normally opened contact connects the second end of the second electric capacity.
In this embodiment, relay can be incorporated the second electric capacity into the circuit start quickly when connecting normally-closed contact, after startup is finished, and when connecting normally opened contact, short circuit current adjuster when disconnecting the second electric capacity, thereby the useful life that has strengthened components and parts.
Fig. 4 is the circuit diagram according to the compressor start circuit of second preferred embodiment of the invention.This embodiment can be used as the preferred implementation of above-described embodiment.
As shown in Figure 4, this compressor start circuit also comprises contactor 26 (controllable silicon) except comprising the first electric capacity 21, current regulator 22, the second electric capacity 23 and control switch 24.
In the present embodiment, the second electrode of power supply can be the live wire end of AC power.
In this embodiment, by switching on and off of contactor 26 control start-up circuits, can be implemented in special time and connect start-up circuit, thereby reach better startup effect.
Fig. 5 is the circuit diagram according to the compressor start circuit of third preferred embodiment of the invention.This embodiment can be used as the preferred implementation of above-described embodiment.
As shown in Figure 5, this compressor start circuit also comprises controller 27 except comprising the first electric capacity 21, current regulator 22, the second electric capacity 23 and control switch 24.
Are connected with current regulator and are connected in the common port contact of controller 27 and relay 25, contactor 26.
Behind access controller 27, controller 27 is realized control to each element by various drivings, for example, drive control contactor 26, current regulator 22 and relay 25 by contactor driving, current regulator driving (controllable silicon driving) and relay.Concrete principle is as follows:
Contactor drives disconnection or the closure of coming control contactor 26 by the small thyristor of a 4A, and conventional way is for when the needs contactor is closed, and controller 27 is realized controlled silicon conducting immediately.
Controller 27 drives to control the starting current of compressor by regulating current regulator.
The voltage that controller 27 drives by regulating relay comes adhesive or the disconnection of control relay 25.When the voltage of relay driving is 48V, relay 25 adhesives, when the voltage of relay driving was 0V, relay 25 disconnected.Be 48V with the voltage control that relay drives just at compressor start process middle controller only, the voltage that non-compressor start relay in period drives is 0V, so the time of relay 25 work is very short, the useful life of improving relay.
In this embodiment, by introducing controller 27, can realize more accurately controlling.
Fig. 6 is the circuit diagram according to the compressor start circuit of four preferred embodiment of the invention.This embodiment can be used as the preferred implementation of above-described embodiment.
As shown in Figure 6, this compressor start circuit also comprises zero-crossing detector 28 except comprising the first electric capacity 21, current regulator 22, the second electric capacity 23 and control switch 24.
Zero-crossing detector 28 first ends are connected to the second electrode of power supply, and the second end is connected to controller 27, and control contactor 26 was connected when controller 27 detected the first electrode zero passage of power supply at zero-crossing detector 28.
Controller 27 judges according to zero-crossing detector 28 whether supply voltage is in the zero crossing voltage location.When needs contactor 26 closure, controller 27 judges that by zero-crossing detector 28 whether the controllable silicon both end voltage is at dead-center position first, only at dead-center position just with contactor 26 conductings, voltage difference is very little in the time of can guaranteeing contactor 26 conducting like this, improves the useful life of contactor 26 in the contactor drive circuit.
In this embodiment, when the power supply zero passage, connect circuit, can alleviate to a certain extent and start the impact that electrical network is produced.
Fig. 7 is the circuit diagram according to the compressor start circuit of fifth preferred embodiment of the invention.This embodiment can be used as the preferred implementation of above-described embodiment.
As shown in Figure 7, this compressor start circuit also comprises starting and finishes checkout gear 29 except comprising the first electric capacity 21, current regulator 22, the second electric capacity 23 and control switch 24.
Start and finish the start end that checkout gear 29 first ends are connected to compressor, the second end is connected to controller 27, and controller 27 state that control relay 25 is connected with normally opened contact from the common port contact after startup is finished checkout gear 29 and detected compressor start and finish switches to the state that open terminal contacts is connected with normally-closed contact.
Start and finish checkout gear 29 by judging the phase difference of compressor current and voltage, if phase difference reaches 90 degree, then start and finish.
In this embodiment, finish the judgement of checkout gear 29 by startup, after startup, disconnect the second electric capacity and short circuit current adjuster, can make compressor enter normal operation and increased useful life of the second electric capacity and current regulator.
Preferably, the controller in the embodiment of the invention is single-chip microcomputer or central processing unit (CPU).
Fig. 8 is the compressor start circuit according to fifth preferred embodiment of the invention.Regulate starting resistor and the starting current of incorporating start-up capacitance into and regulating compressor by adopting single-chip microcomputer or CPU intelligence; make and reduce to start-up time in 1 second; and the immediate current when effectively reducing compressor start and instantaneous power; thereby play the protection compressor, improve the effect in compressor operating life-span, also reduce simultaneously because the impact that large power air-conditioned startup produces electrical network.
To achieve these goals, the embodiment of the invention provides a kind of air conditioner, and this air conditioner comprises compressor and control the compressor start circuit of this compressor that wherein, the compressor start circuit is any compressor start circuit among the present invention.
The embodiment of the invention also provides a kind of compressor start method, and the method can be carried out based on above-mentioned compressor start circuit.
Fig. 9 is the flow chart according to the compressor start method of the embodiment of the invention.
As shown in Figure 9, this compressor start method comprises that following step S902 is to step S904.
Step S902, with the two ends of the second Capacitance parallel connection to the first electric capacity, wherein, the second electric capacity, by the second capacitive branch and the first Capacitance parallel connection be connected between the start end of the first electrode of power supply and compressor.
Preferably, with the second Capacitance parallel connection after the two ends of the first electric capacity, closed contactor when the power supply zero passage, wherein, contactor is connected between the common port of the second electrode of power supply and compressor.When the power supply zero passage, connect circuit, can alleviate to a certain extent and start the impact that electrical network is produced.
Step S904 regulates current regulator until compressor start is finished, and wherein, contactor is connected between the operation end of the first electrode of power supply and compressor.
Preferably, after finishing compressor start, disconnect the second electric capacity; And/or with the current regulator short circuit, after startup is finished, in circuit, do not bear other work as the second electric capacity and the current regulator of start-up capacitance, therefore, with its disconnection or short circuit, can increase the life-span of components and parts.
Below be the preferred embodiment of the present invention, this embodiment can realize the wherein quick startup of compressor of air-conditioning preferably, and in conjunction with shown in Figure 7, the method comprises following 11 steps.
The first step: before the startup, not work of relay J 1, contact joins normal-closed end NC position to.
Second step: CPU sends instruction, so that relay drives electricly, double-contact relay J1 starts working.
The 3rd step: the contact NO of relay J 1 is closed, and start-up capacitance C2 and running capacitor C 1 be access compressor in parallel together.
The 4th step: CPU judges according to zero passage detection whether supply voltage is in the zero crossing voltage location.
The controllable silicon of the 5th step: CPU in constantly conducting of power supply zero-point voltage state contactor drive circuit.
The 6th step: contactor K adhesive.
The 7th step: CPU sends instruction, drives to control the starting current of compressor by regulating current regulator, and current regulator can be realized with controllable silicon herein.
The 8th step: compressor starts starts.
The 9th step: CPU sends instruction, drives the starting current that progressively increases the control compressor by regulating controllable silicon.
The tenth step: CPU finishes to detect according to startup and judges whether compressor starts and finish (by the phase difference of judgement compressor current and voltage, if phase difference reaches 90 degree, then start and finish), do not finish then progressive the 9th step if start, otherwise enter next step.
After the 11 step: CPU detects and starts settling signal, send motor-driven the finishing of instruction indication compression, relay J 1 outage, contact comes back to short circuit silicon controlled NC position, so that the controllable silicon short circuit, start-up capacitance C2 breaks away from simultaneously, and is ineffective, avoid start-up capacitance long-term and in compressor, finished so the whole process of compressor start.
As can be seen from the above description, the technique effect below the present invention has realized: shortened the compressor start time, thereby reduced compressor start to the impact of power supply, further reduced the probability that compressor burns out in start-up course.Improve the useful life of current regulator in the contactor drive circuit, improve the useful life of relay, and then whole reliability and useful life of having improved soft starting plate.
Need to prove, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. compressor start circuit comprises:
The first electric capacity is connected between the start end of the first electrode of power supply and described compressor;
It is characterized in that, also comprise:
Current regulator is connected between the operation end of the first electrode of power supply and described compressor;
The second electric capacity, by the second capacitive branch and described the first Capacitance parallel connection be connected between the start end of the first electrode of power supply and described compressor; And
Control switch is connected in described the second capacitive branch.
2. compressor start circuit according to claim 1 is characterized in that:
Described control switch is relay, and the common port contact of described relay is connected to the first electrode of described power supply, and normally-closed contact connects the operation end of described compressor, and normally opened contact connects the second end of described the second electric capacity.
3. compressor start circuit according to claim 2 is characterized in that, described circuit also comprises:
Contactor is connected between the common port of the second electrode of power supply and described compressor.
4. compressor start circuit according to claim 3 is characterized in that, described circuit also comprises:
Controller is connected with the common port contact of described relay, described contactor and the current regulator of being connected.
5. compressor start circuit according to claim 4 is characterized in that, described circuit also comprises:
Zero-crossing detector, first end are connected to the second electrode of described power supply, and the second end is connected to described controller, and described controller is controlled described contactor and connected when described zero-crossing detector detects the first electrode zero passage of described power supply.
6. compressor start circuit according to claim 4 is characterized in that, described circuit also comprises:
Start and finish checkout gear, first end is connected to the start end of described compressor, the second end is connected to described controller, and the described controller state that the described relay of control is connected with normally opened contact from the common port contact after described startup is finished checkout gear and detected described compressor start and finish switches to the state that open terminal contacts is connected with normally-closed contact.
7. compressor start circuit according to claim 4 is characterized in that, described controller comprises:
Single-chip microcomputer or central processing unit.
8. air conditioner comprises compressor and controls the compressor start circuit of described compressor, it is characterized in that described compressor start circuit is each described compressor start circuit in the claim 1 to 7.
9. a compressor start method is characterized in that, described method comprises:
With the two ends of the second Capacitance parallel connection to the first electric capacity, wherein, described the second electric capacity, by the second capacitive branch and described the first Capacitance parallel connection be connected between the start end of the first electrode of power supply and described compressor; And
Regulate current regulator until compressor start is finished, wherein, described contactor is connected between the operation end of the first electrode of power supply and described compressor.
10. compressor start method according to claim 9 is characterized in that, with the second Capacitance parallel connection after the two ends of the first electric capacity, described method also comprises:
Closed contactor when the power supply zero passage, wherein, described contactor is connected between the common port of the second electrode of power supply and described compressor.
11. compressor start method according to claim 10 is characterized in that, described method also comprises:
After finishing described compressor start, disconnect described the second electric capacity; And/or
With described current regulator short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101196778A CN103378770A (en) | 2012-04-20 | 2012-04-20 | Compressor starting circuit, air conditioner and compressor starting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101196778A CN103378770A (en) | 2012-04-20 | 2012-04-20 | Compressor starting circuit, air conditioner and compressor starting method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299992A (en) * | 2015-11-26 | 2016-02-03 | 广东美的制冷设备有限公司 | Compressor control system, air conditioner and compressor control method |
| WO2017147843A1 (en) * | 2016-03-03 | 2017-09-08 | 广东美芝制冷设备有限公司 | Variable capacitance compressor assembly and refrigeration device comprising same |
| CN109323386A (en) * | 2017-07-31 | 2019-02-12 | 广东美的制冷设备有限公司 | The detection method and device of cooler compressor starting time under heating mode |
| CN109798630A (en) * | 2019-01-25 | 2019-05-24 | 青岛海信日立空调***有限公司 | A kind of air-conditioning main control loop and air conditioner |
| CN113328655A (en) * | 2021-05-31 | 2021-08-31 | 三一重机有限公司 | Cold start circuit and excavator |
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| CN113328655B (en) * | 2021-05-31 | 2023-11-28 | 三一重机有限公司 | Cold start circuit and excavator |
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Application publication date: 20131030 |