CN202014216U - Motor and drive circuit thereof - Google Patents
Motor and drive circuit thereof Download PDFInfo
- Publication number
- CN202014216U CN202014216U CN2011201364736U CN201120136473U CN202014216U CN 202014216 U CN202014216 U CN 202014216U CN 2011201364736 U CN2011201364736 U CN 2011201364736U CN 201120136473 U CN201120136473 U CN 201120136473U CN 202014216 U CN202014216 U CN 202014216U
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- Prior art keywords
- coil
- relay
- motor
- main
- thermal protector
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Abstract
The utility model discloses a motor and a drive circuit thereof. The motor and a drive circuit thereof comprise a main coil (M), a main switch (SA), a thermal protector (RC), a starting capacitor (C), a starting coil (F), an alternating current power supply (AC) and a relay (K), wherein the alternating current power supply (AC) is connected with the main switch (SA), the main switch (SA) is connected with the main coil (M), the main coil (M) is connected with the coil of the relay (K), the coil of the relay (K) is connected with the thermal protector (RC), the thermal protector (RC) is connected with the alternating current power supply (AC), the starting capacitor (C) is connected with the common port of the main switch (SA) and the main coil (M), the starting capacitor (C) is connected with the starting coil (F), the starting coil (F) is connected with the normally open contact of the relay (K), and the normally open contact of the relay (K) is connected with the common port of the thermal protector (RC) and the relay (K) . The motor and the drive circuit thereof are convenient in assembling.
Description
Technical field
The utility model relates to dynamo-electric field, specifically is a kind of motor and drive circuit thereof.
Background technology
The motor and the drive circuit thereof of prior art comprise main coil; master switch; thermal protector; start electric capacity; actuating coil; AC power and normally closed centrifugal switch; one end of AC power is connected with an end of master switch; the other end of master switch is connected with an end of main coil; the other end of main coil is connected with an end of thermal protector; the other end of thermal protector is connected with the other end of AC power; an end that starts electric capacity is connected with the common port of main coil and master switch; the other end that starts electric capacity is connected with an end of actuating coil; the other end of actuating coil is connected with an end of normally closed centrifugal switch, and the other end of normally closed centrifugal switch is connected with the common port of main coil and thermal protector.
Normally closed centrifugal switch is installed on the output shaft of motor, its operation principle is, when rotating speed is not worked or just started working to motor when slow, centrifugal switch all is closed, like this, it is in parallel with main coil to start electric capacity and actuating coil, when motor speedup and actual speed acquire a certain degree, as the motor working speed 70 percent after, the centrifugal force of centrifugal switch is greater than the elastic force of shell fragment of centrifugal switch inside, like this, centrifugal switch disconnects, and causes starting electric capacity and actuating coil and main coil and disconnects.
The real process of motor start-up is: open master switch, make AC power with start electric capacity, actuating coil is communicated with, the actuating coil work of energising makes whole motor start-up; After the actual speed behind the motor start-up acquired a certain degree, centrifugal switch disconnected, and actuating coil quits work, and main coil continues to work under the AC power effect.
There are following defective in the motor of above prior art and drive circuit thereof:
Because what this motor adopted is centrifugal switch, and the break-make of centrifugal switch must use centrifugal force, has so just caused centrifugal switch can only be assemblied on the output shaft of motor, rigging position is single, must reserve installing space on motor output shaft; And the axis of the axis that must guarantee centrifugal switch and motor output shaft is on same straight line, and its assembly precision is had relatively high expectations, so assemble very inconvenient.
The utility model content
The technical problems to be solved in the utility model is that a kind of motor easy to assembly and drive circuit thereof are provided.
Technical solution of the present utility model is; a kind of motor and drive circuit thereof with following structure is provided; it comprises main coil; main switch; thermal protector; start electric capacity; actuating coil and AC power; it also comprises relay; one end of AC power is connected with an end of main switch; the other end of main switch is connected with an end of main coil; the other end of main coil is connected with an end of the coil of relay; the other end of the coil of relay is connected with an end of thermal protector; the other end of thermal protector is connected with the other end of AC power; an end that starts electric capacity is connected with the common port of main switch and main coil; the other end that starts electric capacity is connected with an end of actuating coil; the other end of actuating coil is connected with an end of the normally opened contact of relay, and the other end of the normally opened contact of relay is connected with the common port of the coil of thermal protector and relay.
The start-up course of the utility model motor is: open master switch, make the coil of electric current by main coil and relay, cause the coil electricity of relay to produce magnetic field, the normally opened contact of relay is adsorbed to closure state, and then make startup electric capacity, actuating coil switch on, the actuating coil work of energising, thus drive whole motor start-up; Subsequently, the electric current that flows through the coil of main coil and relay can constantly reduce, after the electric current of the coil of relay is reduced to a certain degree (as initial electric current 70 percent), the magnetic force in the magnetic field of relay coil is less than the reseting elasticity of the normally opened contact of relay, causing the normally opened contact of relay to reset promptly disconnects, disconnect so start electric capacity and actuating coil and main coil, actuating coil quits work, and main coil works under the AC power effect.
After adopting above structure, the utility model motor and drive circuit thereof compared with prior art have the following advantages:
Substantive distinguishing features of the present utility model is to have substituted traditional centrifugal switch with relay, and relay only need adopt lead to be connected with circuit, its installation site no longer is confined on the output shaft of motor, but can be installed in the optional position of motor, its assembly precision does not have specific (special) requirements yet, so the assembling of this motor and drive circuit thereof is very convenient.
Description of drawings
Accompanying drawing is the circuit theory diagrams of motor of the present utility model and drive circuit thereof.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Motor of the present utility model as shown in drawings and drive circuit thereof, it comprises main coil M, main switch SA, thermal protector RC, starts capacitor C, actuating coil F, AC power AC and relay K.The end of AC power AC is connected with the end of main switch SA; the other end of main switch SA is connected with the end of main coil M; the other end of main coil M is connected with an end of the coil of relay K; the other end of the coil of relay K is connected with the end of thermal protector RC; the other end of thermal protector RC is connected with the other end of AC power AC; an end that starts capacitor C is connected with the common port of main coil M with main switch SA; the other end that starts capacitor C is connected with the end of actuating coil F; the other end of actuating coil F is connected with an end of the normally opened contact of relay K, and the other end of the normally opened contact of relay K is connected with the common port of the coil of thermal protector RC and relay K.The normally opened contact of relay K is meant, the contact of place's off-state when the coil of relay K is not switched on.The relay K of present embodiment can be buied by commercially available.Model as Mexico SENSATA company is the relay K of 4CR-1-777.
Claims (1)
1. motor and drive circuit thereof; it comprises main coil (M); main switch (SA); thermal protector (RC); start electric capacity (C); actuating coil (F) and AC power (AC); it is characterized in that: it also comprises relay (K); one end of AC power (AC) is connected with an end of main switch (SA); the other end of main switch (SA) is connected with an end of main coil (M); the other end of main coil (M) is connected with an end of the coil of relay (K); the other end of the coil of relay (K) is connected with an end of thermal protector (RC); the other end of thermal protector (RC) is connected with the other end of AC power (AC); an end that starts electric capacity (C) is connected with the common port of main switch (SA) with main coil (M); the other end that starts electric capacity (C) is connected with an end of actuating coil (F); the other end of actuating coil (F) is connected with an end of the normally opened contact of relay (K), and the other end of the normally opened contact of relay (K) is connected with the common port of thermal protector (RC) with the coil of relay (K).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201364736U CN202014216U (en) | 2011-04-26 | 2011-04-26 | Motor and drive circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201364736U CN202014216U (en) | 2011-04-26 | 2011-04-26 | Motor and drive circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202014216U true CN202014216U (en) | 2011-10-19 |
Family
ID=44784827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201364736U Expired - Lifetime CN202014216U (en) | 2011-04-26 | 2011-04-26 | Motor and drive circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202014216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931287A (en) * | 2019-04-10 | 2019-06-25 | 深圳市恩玖科技有限公司 | A kind of fault detection circuit and its fault detection method of ac fan |
-
2011
- 2011-04-26 CN CN2011201364736U patent/CN202014216U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931287A (en) * | 2019-04-10 | 2019-06-25 | 深圳市恩玖科技有限公司 | A kind of fault detection circuit and its fault detection method of ac fan |
| CN109931287B (en) * | 2019-04-10 | 2020-06-12 | 深圳市恩玖科技有限公司 | Fault detection circuit of alternating current fan and fault detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111019 |
|
| CX01 | Expiry of patent term |