CN102355173A - Motor starting circuit of compressor - Google Patents
Motor starting circuit of compressor Download PDFInfo
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- CN102355173A CN102355173A CN2011102871963A CN201110287196A CN102355173A CN 102355173 A CN102355173 A CN 102355173A CN 2011102871963 A CN2011102871963 A CN 2011102871963A CN 201110287196 A CN201110287196 A CN 201110287196A CN 102355173 A CN102355173 A CN 102355173A
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Abstract
The invention provides a motor starting circuit of a compressor, which is provided with a starting capacitor (3) and a branch circuit connected with the starting capacitor (3) in parallel, wherein the branch circuit is composed of an auxiliary starting capacitor (2) and a temperature control switch (4) which are connected together in series. In the invention, because the branch circuit connected with the starting capacitor in parallel is provided with the auxiliary starting capacitor, the motor starting circuit provided by the invention normally starts a compressor in an air conditioner in a low-voltage state.
Description
Technical field
The present invention relates to a kind of electric motor starting circuit of compressor.
Background technology
A lot of in the world regional supplies of electric power are not enough, spread of voltage, and it is very big to fluctuate; Often be in the state of low pressure operation; Rated voltage is the 220V area, and the normal fluctuation range of voltage should be at 198V-242V, still because electrical problems; Perhaps use generator powered separately; Actual scope range of the fluctuation of voltage is between 160V-242V, and in the long-time running process, the parts of air conditioner are bearing long-term low-pressure state; Cause the air conditioner fraction defective to increase, complete machine can't normally move.
For example; Electric motor starting circuit referring to the compressor of the prior art shown in Fig. 1; It comprises: compressor electric motor 1, compressor power supply, startup capacitor 3; Wherein start between the auxiliary winding end S and power firestreak end L that capacitor 3 is connected compressor electric motor 1; The main winding end R of compressor electric motor 1 is connected with the live wire end L of power supply, and the public terminal C of compressor electric motor 1 is connected with the zero line side N of power supply.Also show among Fig. 1: outdoor motor 6, one of them terminal links to each other with power firestreak end L and another terminal links to each other with zero-power line end N; And the blower fan capacitor 7 that links to each other with outdoor motor 6, the 3rd terminal ground connection of outdoor motor 6.Y/G among the power supply terminal row 5 shown in Fig. 1 representes earth terminal.
As Figure 1 shows the prior art, the motor startup and normal operation of the starting capacitor are the work, that is, if you increase the capacitance value of the capacitor 3 starts, will also increase the running capacitor (figure 1, the motor 1 normal operation, the start capacitor is used as a run capacitor) capacitance value, and in the long run when the air conditioning system, the operation of high capacitance value of the life and reliability of the motor can be affected, Figure 1 shows the prior art 198V-220V voltage can cause the compressor motor a normal start, in the 160-190V voltage situations such as low voltage compressor motor 1 does not start properly, affecting the user's normal use; Therefore, the need to design and implement a compressor motor start circuit starting and running in order to achieve unity.
Summary of the invention
To the problem that exists in the correlation technique, the object of the present invention is to provide a kind of electric motor starting circuit of compressor, normally start with the motor of realization under low-pressure state compressor.
For realizing above-mentioned purpose, the present invention provides a kind of electric motor starting circuit of compressor, has the startup capacitor, also has and the parallelly connected branch road of startup capacitor, and assistant starting capacitor that this route is cascaded and temperature detect switch (TDS) are formed.
Preferably, the described branch road that is connected in parallel with start capacitor, be connected between the power supply of auxiliary winding end and compressor of motor.
Preferably, the capacitance X1 of assistant starting capacitor is following with the corresponding relation of the capacitance X that starts capacitor: X1/X=1.06U/U1, and wherein U is the rated voltage of starter motor, U1 is the real work voltage of said motor.
Preferably, compressor is an invariable frequency compressor.
Useful technique effect of the present invention is: the present invention adopts two capacitor design, and the assistant starting capacitor parallelly connected with starting capacitor is provided, and when starting the motor of compressor, temperature detect switch (TDS) is closed, and the assistant starting capacitor works; When motor ran well, temperature detect switch (TDS) broke off, and started capacitor and worked, and when compressor electric motor starts once more, recovered a last circulation.So, the present invention can realize the normal startup to compressor electric motor under low-voltage state.Further, eliminated in the prior art owing to increase and start capacitance and life-span and the reliability of compressor electric motor produced dysgenic defective.
Description of drawings
Fig. 1 is the circuit diagram one of air conditioner, shows the compressor electric motor start-up circuit of prior art;
Fig. 2 is the circuit diagram two of air conditioner, shows compressor electric motor start-up circuit of the present invention.
Embodiment
Below referring to accompanying drawing the specific embodiment of the invention is described.
Referring to Fig. 2, the electric motor starting circuit of compressor of the present invention comprises: start capacitor 3, and the branch road that is made up of temperature detect switch (TDS) 4 that is cascaded and assistant starting capacitor 2, and this branch road (below be called first branch road) is parallelly connected with startup capacitor 3.When starting the motor 1 of compressor, temperature detect switch (TDS) 4 closures, assistant starting capacitor 2 works; When motor 1 ran well, temperature detect switch (TDS) 4 broke off, and started capacitor 3 and worked, and when motor 1 starts once more, recovered a last circulation.So, the present invention can realize the normal startup to compressor electric motor under low-voltage state, and described low-pressure state is the voltage in [U*70%, U*120%] scope, and wherein " * " expression is multiplied each other, and U representes to start the rated voltage of compressor electric motor.Preferably, the present invention can realize the normal startup to compressor electric motor in the voltage range of 160-190V, promptly realize compressor is normally started.Further, above-mentioned have two capacitor design schemes that start capacitor and assistant starting capacitor, eliminated in the prior art because increase startup capacitance and the life-span and the reliability of compressor electric motor produced dysgenic defective.
Continuation is referring to Fig. 2; Start between the live wire end L of auxiliary winding end S and compressor power supply that the capacitor 3 and first branch road all be connected compressor electric motor 1; Wherein assistant starting capacitor 2 is connected in the auxiliary winding end S of compressor electric motor 1, and temperature detect switch (TDS) 4 is connected in the live wire end L of power supply.With regard to temperature detect switch (TDS) 4, when temperature is higher than set point and (for example 15 seconds-60 seconds, can design according to different needs) the then temperature detect switch (TDS) automatic disconnection of the lasting scheduled time.When starting the motor 1 of compressor, assistant starting capacitor 2 works, and temperature detect switch (TDS) position temperature raises simultaneously, and temperature detect switch (TDS) 4 breaks off when reaching predetermined temperature, and start capacitor 3 this moment works, and motor 1 runs well.
The main winding end S that also shows compressor electric motor 1 among Fig. 2 is connected with the live wire end L of power supply, and the public terminal C of compressor electric motor 1 is connected with the zero line side N of power supply.The connected mode of the outdoor motor 6 shown in Fig. 2, blower fan capacitor 7 is identical with Fig. 1, repeats no more.For simplicity, power supply is not shown among Fig. 2, and shows the terminal board 5 of power supply, terminal board 5 has live wire end L, zero line side N, earth terminal Y/G.
Should be appreciated that; Because among the present invention, assistant starting capacitor 2 works when starting owing to compressor electric motor, works and when compressor electric motor runs well, start capacitor 2; Therefore should be appreciated that the capacitance of assistant starting capacitor 2 is greater than the capacitance that starts capacitor 3.Preferably; Assistant starting capacitor 2 and the capacitance relation that starts capacitor 3: the capacitance X1 of assistant starting capacitor 2 is following with the corresponding relation of the capacitance X that starts capacitor 3: X1/X=1.06U/U1; Wherein U is for starting the rated voltage of compressor electric motor, and U1 is the real work voltage of compressor electric motor.For example: rated voltage U is 220V; Virtual voltage U1 is 180V, and the capacitance that starts capacitor 3 is 30UF, then capacitance=the 220/180*1.06*30=38.9 of assistant starting capacitor 2; Round, then the capacitance of assistant starting capacitor 2 is 40UF.
As a kind of optimal way, compressor is an invariable frequency compressor among the present invention, and correspondingly, start-up circuit of the present invention is the start-up circuit of fixed frequency air conditioner device.
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 changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the electric motor starting circuit of a compressor has startup capacitor (3), it is characterized in that,
Also have and the parallelly connected branch road of said startup capacitor (3) said assistant starting capacitor (2) and temperature detect switch (TDS) (4) composition that route is cascaded.
2. the electric motor starting circuit of compressor according to claim 1 is characterized in that,
The described said branch road that is connected in parallel with start capacitor (3), be connected between the power supply of auxiliary winding end (S) and said compressor of said motor.
3. according to each described electric motor starting circuit among the claim 1-2, it is characterized in that,
The corresponding relation of the capacitance X of the capacitance X1 of said assistant starting capacitor (2) and said startup capacitor (3) is following: X1/X=1.06U/U1, and wherein U is for starting the rated voltage of said motor, and U1 is the real work voltage of said motor.
4. according to each described electric motor starting circuit among the claim 1-2, it is characterized in that said compressor is an invariable frequency compressor.
5. electric motor starting circuit according to claim 3 is characterized in that, said compressor is an invariable frequency compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102871963A CN102355173A (en) | 2011-09-23 | 2011-09-23 | Motor starting circuit of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102871963A CN102355173A (en) | 2011-09-23 | 2011-09-23 | Motor starting circuit of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102355173A true CN102355173A (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102871963A Pending CN102355173A (en) | 2011-09-23 | 2011-09-23 | Motor starting circuit of compressor |
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| CN (1) | CN102355173A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702699A (en) * | 2015-11-13 | 2017-05-24 | 无锡小天鹅股份有限公司 | Clothes dryer and control circuit and control system thereof |
| CN108574283A (en) * | 2018-07-02 | 2018-09-25 | 合肥天鹅制冷科技有限公司 | A kind of device that can make to run under single-phase compressor mains fluctuations |
| CN109638952A (en) * | 2018-11-26 | 2019-04-16 | 珠海格力电器股份有限公司 | A kind of method for controlling power supply and system of compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2805214Y (en) * | 2005-05-17 | 2006-08-09 | 常熟市天银机电有限公司 | Starter for electric motor of compressor |
| CN201090422Y (en) * | 2007-10-15 | 2008-07-23 | 珠海格力电器股份有限公司 | Start circuit of fixed frequency air conditioner compressor |
| CN201706668U (en) * | 2010-02-05 | 2011-01-12 | 顾小平 | Miniature bed heating air conditioner |
-
2011
- 2011-09-23 CN CN2011102871963A patent/CN102355173A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2805214Y (en) * | 2005-05-17 | 2006-08-09 | 常熟市天银机电有限公司 | Starter for electric motor of compressor |
| CN201090422Y (en) * | 2007-10-15 | 2008-07-23 | 珠海格力电器股份有限公司 | Start circuit of fixed frequency air conditioner compressor |
| CN201706668U (en) * | 2010-02-05 | 2011-01-12 | 顾小平 | Miniature bed heating air conditioner |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702699A (en) * | 2015-11-13 | 2017-05-24 | 无锡小天鹅股份有限公司 | Clothes dryer and control circuit and control system thereof |
| CN106702699B (en) * | 2015-11-13 | 2019-04-16 | 无锡小天鹅股份有限公司 | Control circuit, control system and the dryer of dryer |
| CN108574283A (en) * | 2018-07-02 | 2018-09-25 | 合肥天鹅制冷科技有限公司 | A kind of device that can make to run under single-phase compressor mains fluctuations |
| CN108574283B (en) * | 2018-07-02 | 2024-01-12 | 合肥天鹅制冷科技有限公司 | Device capable of operating single-phase compressor under power voltage fluctuation |
| CN109638952A (en) * | 2018-11-26 | 2019-04-16 | 珠海格力电器股份有限公司 | A kind of method for controlling power supply and system of compressor |
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Application publication date: 20120215 |