CN1162948C - Power supply phase sequence automatic regulator of three-phase air-conditioner - Google Patents
Power supply phase sequence automatic regulator of three-phase air-conditioner Download PDFInfo
- Publication number
- CN1162948C CN1162948C CNB021100438A CN02110043A CN1162948C CN 1162948 C CN1162948 C CN 1162948C CN B021100438 A CNB021100438 A CN B021100438A CN 02110043 A CN02110043 A CN 02110043A CN 1162948 C CN1162948 C CN 1162948C
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- Prior art keywords
- phase
- contact
- contactor
- alternating current
- protector
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- Expired - Fee Related
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- 238000000819 phase cycle Methods 0.000 title claims abstract description 13
- 230000001012 protector Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 239000004821 Contact adhesive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 2
- 208000009205 Tinnitus Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Control Of Ac Motors In General (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to an automatic adjuster of power source phase sequence for three-phase air conditioners, which belongs to the technique of air conditioners. The automatic adjuster is composed of an anti-phase protector, a signal line connected with an end C, coils of a first alternating current contactor and a second alternating current contactor connected in parallel with a zero line, an end A and an end B, contact points 1, 3 and 5 of the first alternating current contactor and the second alternating current contactor connected in parallel with three-phase output ends, and output ends connected with the contact points 2, 4 and 6 of the first alternating current contactor, wherein the contact points 2, 4 and 6 of the second alternating current contactor are connected with the contact points 2, 6 and 4 of the first alternating current contactor respectively. The anti-phase protector is composed of a series circuit, relay coils, an end C, an end B connected with the normally-closed contact of a relay, and an end A connected with the normally open contact, wherein the series circuit is formed by the method that a resistor R1, a capacitor C1, a resistor R2 and a capacitor C2 are connected between an RST phase and a middleline. When the phase sequence of the power source is altered, the automatic adjuster can automatically switch the power source to the correct phase position instantaneously. A compressor motor can not be damaged. The automatic adjuster has the advantages of long service life, time saving and convenience. The automatic adjuster can be widely applied to various air conditioners with a three-phase power source.
Description
Technical field
The invention belongs to the air conditioner technical field, a kind of power phase automatic regulator that is used for the three-phase air conditioner of more clearly saying so.
Background technology
The air conditioner of existing three phase mains, its compressor electric motor are to adopt three phase electric machine.Because the difference of three-phase power supply phase sequence can cause the change that three phase electric machine turns to, and rotary compressor can only be by the set turning operation of design, otherwise can burn compressor electric motor because of oppositely blocking cylinder.Therefore, when power supply phase sequence mistake, must shut down.Subsequently with manual reset, be replaced by correct phase place after, just can re-power start, recover operate as normal.In this course, the shutdown start has not only influenced indoor air conditioning continually, and has quickened the particularly damage process of compressor of air conditioner, has reduced its useful life.During the compressor antiport of off-premises station with ear-piercing roughness.In addition, shutdown and manual reset are more numerous and diverse, often want the professional to carry out, and inconvenience is arranged more.Particularly bother in the unsettled area of power supply.Prior, there is carelessness just may burn compressor electric motor slightly.
Purpose of the present invention just is to overcome above-mentioned shortcoming and defect, when a kind of power supply phase sequence mistake when the three-phase air conditioner (promptly reverse) is provided, need not shut down, need not manual reset, can instantaneously automatically switch to correct phase place; Can not burn compressor electric motor, not influence indoor air conditioning, not reduce air conditioner useful life of compressor particularly, the power phase automatic regulator of three-phase air conditioner is very easily used in the interference of the noise of can avoiding reversing.
Summary of the invention
In order to achieve the above object, the present invention is made of the electric wiring that is installed on the off-premises station circuit board.Electric wiring is by the anti-phase protector that is installed on the circuit board; the holding wire that is connected with the input C end of anti-phase protector; be connected to input A end and the coil of first A.C. contactor between the input B end and the coil of second A.C. contactor of power supply N line and anti-phase protector; be connected to the three-phase output end R end of anti-phase protector; the S end; first contact of first A.C. contactor on the T end; the 3rd contact; the 5th contact, its first contact; the 3rd contact; the 5th contact is connected in parallel on first contact of first A.C. contactor respectively; the 3rd contact; second A.C. contactor on the 5th contact and second contact that is connected first A.C. contactor; the 4th contact; the output of the correct phase sequence power supply on the 6th contact constitutes.Second contact of second A.C. contactor, the 4th contact, the 6th contact are connected with second contact, the 6th contact, the 4th contact of first A.C. contactor respectively.
The anti-phase protector is by first resistance that is connected between its three-phase output end R end and the center line; be connected first electric capacity between its three-phase output end S end and the center line; be connected second resistance between its three-phase output end T end and the center line and the series circuit of second electric capacity; be connected in parallel on the coil of the relay on the series circuit of second resistance and second electric capacity; be connected the input C end on the contact common port of relay; be connected the input B end on the normally-closed contact of relay; the input A end that is connected on the normally opened contact of relay constitutes.The three-phase output end R end of anti-phase protector, S end, T end are connected on the three-phase input end of power supply.
The operation principle of anti-phase protector is to insert the inductance of the coil of resistance capacitance and relay itself in R, S, T three phase sine alternating current circuit, and the phase angle between them is changed.When phase sequence was correct, electric current was through the relay in the anti-phase protector.Relay coil one end is that the T phase other end is the center line of three-phase.Relay gets the voltage adhesive, and A-C connects, and A terminates at that the control A.C. contactor gets electric back contact adhesive on the coil of A.C. contactor, and electric current just gets an electric shock by first contact 1, the 3rd contact the 3, the 5th of first A.C. contactor and 5 powers to control system.
When the power supply phase sequence changes, the relay coil both end voltage same-phase in the anti-phase protector, two ends no-voltage electric current passes through, so not adhesive of relay, terminal B-C is logical.At this moment the B end with the coil of second A.C. contactor and anti-phase protector links to each other, the coil of A.C. contactor get electric after, its contact adhesive.The output phase sequence of the contact of cause first A.C. contactor and the contact of second A.C. contactor is switched by wiring, so just reached the purpose of commutation.
The first and second two A.C. contactor interlockings can prevent phase fault.Interlocking can be mechanical, also can be electric.
Task of the present invention comes to this and finishes.
The present invention has utilized the characteristic of anti-phase protector and A.C. contactor to realize the automatic adjustment of phase sequence.When power phase changed, it can instantaneously automatically switch to correct phase place.Can not burn compressor electric motor, long service life saves time conveniently the thorn ear noise when having avoided the compressor antiport.It can be widely used in the three phase mains air conditioners such as cabinet type, central family formula.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Fig. 2 is the electrical schematic diagram of anti-phase protector.
Fig. 3 is the schematic diagram of two A.C. contactor interlockings.
Embodiment
Embodiments of the invention 1 are as follows: a kind of power phase automatic regulator of three-phase air conditioner, and as Fig. 1～shown in Figure 3.
Shown in Figure 1; electric wiring of the present invention is by the anti-phase protector 11 that is installed on the off-premises station circuit board; the holding wire that is connected with the input C end of anti-phase protector 11; be connected to input A end and the coil of first A.C. contactor 14 between the input B end and the coil of second A.C. contactor 15 of power supply N line and anti-phase protector 11; be connected to the three-phase output end R end of anti-phase protector 11; the S end; first contact 1 of first A.C. contactor 14 on the T end; the 3rd contact 3; the 5th contact 5, its first contact 1 '; the 3rd contact 3 '; first contact 1 of first A.C. contactor 14, the 5th contact 5 ' be connected in parallel on respectively; the 3rd contact 3; second A.C. contactor 15 on the 5th contact 5 and second contact 2 that is connected first A.C. contactor 14; the 4th contact 4; the output of the correct phase sequence power supply on the 6th contact 6 constitutes.Second contact 2 of second A.C. contactor 15 ', the 4th contact 4 ', the 6th contact 6 ' be connected with second contact 2, the 6th contact 6, the 4th contact 4 of first A.C. contactor 14 respectively.
Shown in Figure 2, anti-phase protector 11 is by first resistance 21 that is connected between its three-phase output end R end and the center line; be connected first electric capacity 23 between its three-phase output end S end and the center line; be connected second resistance 22 between its three-phase output end T end and the center line and the series circuit of second electric capacity 24; be connected in parallel on the coil of the relay 16 on the series circuit of second resistance 22 and second electric capacity 24; be connected the input C end on the contact common port of relay 16; be connected the input B end on the normally-closed contact 17 of relay 16; the input A end that is connected on the normally opened contact 18 of relay 16 constitutes.The three-phase output end R end of anti-phase protector 11, S end, T end are connected on the three-phase input end of power supply.
Shown in Figure 3, its normally-closed contact 19 and 20 interlockings are borrowed in first A.C. contactor 14 and 15 interlockings of second A.C. contactor respectively.
When power phase changed, embodiment 1 can instantaneously automatically switch to correct phase place.Can not burn compressor electric motor, long service life saves time conveniently.It can be widely used in the three phase mains air conditioners such as cabinet type, central family formula.
Claims (2)
1. the power phase automatic regulator of a three-phase air conditioner; it is made of the electric wiring that is installed on the off-premises station circuit board; it is characterized in that said electric wiring is by the anti-phase protector (11) that is installed on the circuit board; the holding wire that is connected with the input C end of anti-phase protector (11); be connected to input A end and the coil of first A.C. contactor (14) between the input B end and the coil of second A.C. contactor (15) of power supply N line and anti-phase protector (11); be connected to the three-phase output end R end of anti-phase protector (11); the S end; first contact (1) of first A.C. contactor (14) on the T end; the 3rd contact (3); the 5th contact (5); its first contact (1 '); the 3rd contact (3 '); the 5th contact (5 ') is connected in parallel on first contact (1) of first A.C. contactor (14) respectively; the 3rd contact (3); second A.C. contactor (15) on the 5th contact (5) and second contact (2) that is connected first A.C. contactor (14); the 4th contact (4); the output of the correct phase sequence power supply on the 6th contact (6) constitutes; second contact (2 ') of second A.C. contactor (15); the 4th contact (4 '); the 6th contact (6 ') respectively with second contact (2) of first A.C. contactor (14); the 6th contact (6); the 4th contact (4) connects; anti-phase protector (11) is by first resistance (21) that is connected between its three-phase output end R end and the center line; be connected first electric capacity (23) between its three-phase output end S end and the center line; be connected second resistance (22) between its three-phase output end T end and the center line and the series circuit of second electric capacity (24); be connected in parallel on the coil of the relay (16) on the series circuit of second resistance (22) and second electric capacity (24); be connected the input C end on the contact common port of relay (16); be connected the input B end on the normally-closed contact (17) of relay (16); the input A end institute that is connected on the normally opened contact (18) of relay (16) constitutes, and the three-phase output end R of anti-phase protector (11) holds; the S end; the T end is connected on the three-phase input end of power supply.
2. according to the power phase automatic regulator of the described three-phase air conditioner of claim 1, it is characterized in that said first A.C. contactor (14) and second A.C. contactor (15) interlocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021100438A CN1162948C (en) | 2002-03-01 | 2002-03-01 | Power supply phase sequence automatic regulator of three-phase air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021100438A CN1162948C (en) | 2002-03-01 | 2002-03-01 | Power supply phase sequence automatic regulator of three-phase air-conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367561A CN1367561A (en) | 2002-09-04 |
| CN1162948C true CN1162948C (en) | 2004-08-18 |
Family
ID=4740904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021100438A Expired - Fee Related CN1162948C (en) | 2002-03-01 | 2002-03-01 | Power supply phase sequence automatic regulator of three-phase air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162948C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871981B (en) * | 2010-06-01 | 2012-05-09 | 佛山市中格威电子有限公司 | Automatic detection and regulation method and circuit for air conditioner |
| JP2015126544A (en) | 2013-12-25 | 2015-07-06 | 東芝シュネデール・インバータ株式会社 | Phase sequence changeover device of three-phase power source |
| CN105334475A (en) * | 2015-11-17 | 2016-02-17 | 珠海格力电器股份有限公司 | Three-phase unit control circuit and reverse phase protection state detection method thereof |
| CN106129996A (en) * | 2016-08-25 | 2016-11-16 | 汝州市乐友实业有限公司 | A kind of distance type air-conditioning three-phase circuit falls positive system |
| CN111426890A (en) * | 2020-04-22 | 2020-07-17 | 海信（山东）空调有限公司 | Phase sequence detection circuit, outdoor unit, air conditioner and control method |
| CN111856337A (en) * | 2020-07-10 | 2020-10-30 | 海信集团有限公司 | Control circuit, control panel, electric equipment and control method |
-
2002
- 2002-03-01 CN CNB021100438A patent/CN1162948C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1367561A (en) | 2002-09-04 |
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