CN211405820U - Single-phase asynchronous motor with novel protection device - Google Patents
Single-phase asynchronous motor with novel protection device Download PDFInfo
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- CN211405820U CN211405820U CN202020279210.XU CN202020279210U CN211405820U CN 211405820 U CN211405820 U CN 211405820U CN 202020279210 U CN202020279210 U CN 202020279210U CN 211405820 U CN211405820 U CN 211405820U
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Abstract
The utility model discloses a single-phase asynchronous motor with a novel protection device, which comprises a switch, a thermal protector, a main winding, an auxiliary winding and a capacitance circuit; the thermal protector is connected with the switch control coil in series, the secondary winding is connected with the capacitor circuit in series, the main winding is connected with the secondary winding in parallel, the main winding and the secondary winding are connected into a power supply together, and the switch is arranged between the main winding and the secondary winding which are connected in parallel and the power supply. The utility model discloses a thermal protection is fixed on the coil, establishes ties with relay control coil, according to coil temperature control relay on-off, and the electric current that the thermal protection ware passes through is little, and is reliably durable, and the electric current of relay process itself is big also difficult bad, effectively improves the reliability of motor.
Description
Technical Field
The utility model belongs to single-phase asynchronous machine field especially relates to a take single-phase asynchronous machine of novel protection device.
Background
At present, a motor thermal protector on the market is directly connected in series in a winding and is fixed on a coil, under the conditions that the motor is overheated and overcurrent, a power supply is directly cut off to protect the motor coil, the current passing through the thermal protector under the conditions is very large, and if the thermal protection acts repeatedly, the thermal protector can be broken quickly, so that the protection effect is lost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take novel protection device's single-phase asynchronous machine to prior art not enough, adopt the thermal protection to fix on the coil, establish ties with relay control coil, according to coil temperature control relay on-off, the electric current that the thermal protector passes through is little, and is reliable durable, and the electric current of relay process itself is big also difficult bad, effectively improves the reliability of motor.
A single-phase asynchronous motor with a novel protection device comprises a switch, a thermal protector, a main winding, an auxiliary winding and a capacitor circuit; the thermal protector is connected with the switch control coil in series, the secondary winding is connected with the capacitor circuit in series, the main winding is connected with the secondary winding in parallel, the main winding and the secondary winding are connected into a power supply together, and the switch is arranged between the main winding and the secondary winding which are connected in parallel and the power supply.
Furthermore, the capacitor circuit adopts one of an operating capacitor, a centrifugal switch and a starting capacitor in series, or a centrifugal switch and a starting capacitor in series and then in parallel with the operating capacitor.
Furthermore, one or more thermal protectors are adopted, and the thermal protectors can be fixed on the main winding coil or the auxiliary winding coil or can be respectively fixed on the main winding coil and the auxiliary winding coil.
Furthermore, when a plurality of thermal protectors are adopted, if the thermal protectors are normally open, the thermal protectors are connected in parallel, and if the thermal protectors are normally closed, the thermal protectors are connected in series.
Further, the switch has the same function as the relay.
Further, the relay or the contactor can be normally opened or normally closed according to matching selection.
The utility model has the advantages that: the thermal protection is fixed on the coil and is connected with the relay control coil in series, the relay is controlled to be switched on and off according to the temperature of the coil, the current passing through the thermal protection device is small, the thermal protection device is reliable and durable, the current passing through the relay is large and cannot be easily damaged, and the reliability of the motor is effectively improved. Simultaneously the utility model discloses as an organic whole, it is more succinct pleasing to the eye with hot protect function and motor integration.
Drawings
Fig. 1 is an electrical schematic diagram of the YL series single-phase asynchronous motor of the present invention.
Fig. 2 is an electrical schematic diagram of a YC series single-phase asynchronous motor of the present invention.
Fig. 3 is an electrical schematic diagram of the YY series single-phase asynchronous motor of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, a YL series single-phase asynchronous motor with a novel protection device comprises a relay, a thermal protector, a main winding, an auxiliary winding, a running capacitor, a starting capacitor and a centrifugal switch; the thermal protector is connected with the relay control coil in series, the secondary winding is connected with the running capacitor and the starting capacitor into the centrifugal switch, the running capacitor is connected with the starting capacitor in parallel, and the starting capacitor is connected with the centrifugal switch in series; the main winding and the auxiliary winding are connected in parallel, the main winding and the auxiliary winding are connected into a 220v power supply together, and the relay is arranged between the power supply and the main winding.
The thermal protector is normally opened and the switch is controlled to be opened when the thermal protector is closed.
Example 2:
as shown in fig. 2, a YC series single-phase asynchronous motor with a novel protection device comprises a relay, a plurality of thermal protectors, a main winding, an auxiliary winding, a starting capacitor and a centrifugal switch; the thermal protector is connected with the relay control coil in series, and the secondary winding is connected with the centrifugal switch and the starting capacitor in series; the main winding and the auxiliary winding are connected in parallel, the main winding and the auxiliary winding are connected into a 220v power supply together, and the relay is arranged between the power supply and the main winding.
The thermal protector is normally closed, and when the thermal protector is disconnected, the switch is controlled to be disconnected. A plurality of thermal protectors are connected in series.
Example 3:
as shown in fig. 3, a YY series single-phase asynchronous motor with a novel protection device comprises a relay, a plurality of thermal protectors, a main winding, an auxiliary winding and a running capacitor; the thermal protector is connected with the relay control coil in series, and the secondary winding is connected with the running capacitor in series; the main winding and the auxiliary winding are connected in parallel, the main winding and the auxiliary winding are connected into a 220v power supply together, and the relay is arranged between the power supply and the main winding.
The thermal protector is normally closed, and when the thermal protector is disconnected, the switch is controlled to be disconnected. A plurality of thermal protectors are connected in series.
The utility model provides a take novel protection device's single-phase asynchronous machine theory of operation: when the coil temperature is too high, the disconnection has the switch the same with the relay function, the switch that has the same with the relay function itself can pass through the great not fragile of electric current, and the electric current that the thermal protection ware passes through is little not bad to fall, and is more durable.
The utility model discloses a thermal protector is fixed on the coil, establishes ties with relay control coil, according to coil temperature control relay on-off, and the electric current that thermal protector passes through is little, and is reliably durable, and the electric current of relay process itself is big also difficult bad, effectively improves the reliability of motor. Simultaneously the utility model discloses as an organic whole, it is more succinct pleasing to the eye with hot protect function and motor integration.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A single-phase asynchronous motor with a novel protection device is characterized by comprising a switch, a thermal protector, a main winding, an auxiliary winding and a capacitor circuit; the thermal protector is connected with the switch control coil in series, the secondary winding is connected with the capacitor circuit in series, the main winding is connected with the secondary winding in parallel, the main winding and the secondary winding are connected into a power supply together, and the switch is arranged between the main winding and the secondary winding which are connected in parallel and the power supply.
2. The single-phase asynchronous motor with the novel protection device according to claim 1, wherein the capacitor circuit adopts one of a running capacitor, a centrifugal switch and a starting capacitor connected in series, or a centrifugal switch and a starting capacitor connected in series and then connected in parallel with a running capacitor.
3. The single-phase asynchronous motor with the novel protection device is characterized in that one or more thermal protectors are adopted, and the thermal protectors can be fixed on the main winding coil or the auxiliary winding coil and can also be fixed on the main winding coil and the auxiliary winding coil respectively.
4. The single-phase asynchronous motor with the novel protection device according to claim 3, wherein when a plurality of thermal protectors are adopted, the thermal protectors are normally open and then connected in parallel, and the thermal protectors are normally closed and then connected in series.
5. The single-phase asynchronous motor with the novel protection device according to claim 1, characterized in that the switch has the same function as a relay.
6. The single-phase asynchronous motor with the novel protection device is characterized in that the relay or the contactor can be normally opened or normally closed according to matching selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020279210.XU CN211405820U (en) | 2020-03-09 | 2020-03-09 | Single-phase asynchronous motor with novel protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020279210.XU CN211405820U (en) | 2020-03-09 | 2020-03-09 | Single-phase asynchronous motor with novel protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211405820U true CN211405820U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020279210.XU Active CN211405820U (en) | 2020-03-09 | 2020-03-09 | Single-phase asynchronous motor with novel protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211405820U (en) |
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2020
- 2020-03-09 CN CN202020279210.XU patent/CN211405820U/en active Active
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