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US 2019/0363534 A1Published application
Thermal protection device for single-phase dual-voltage motor
AssigneeGP Enterprises Co., Ltd
InventorXian Wang
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AssigneeGP Enterprises Co., Ltd
InventorXian Wang
Estimating the term…
The present invention discloses a thermal protection device for a single-phase dual-voltage motor, comprising a motor winding, a small-current thermal protector, a large-current thermal protector, wherein the motor winding comprises a main phase winding or comprises a main phase winding and a secondary phase winding, the main phase winding is divided into two portions comprising a first main phase winding and a second main phase winding. According to the above description, in the present invention, two different large and small thermal protectors are used to implement a thermal protection function at different voltages for the single-phase dual-voltage motor by means of an appropriate connection of the circuit, and both use of the protector that can be bound on the stator coil and adoption of a solution in which the slide switch substitutes for the conventional relay significantly reduce the cost and shorten the delivery time, thereby improving the product competitiveness.
A thermal protection device for a single-phase dual-voltage motor, comprising a motor winding, a small-current thermal protector, a large-current thermal protector, and a two-way switch, wherein the motor winding comprises a main phase winding or comprises a main phase winding and a secondary phase winding, the main phase winding is divided into two portions comprising a first main phase winding and a second main phase winding, the small-current thermal protector is connected in series to the first main phase winding, the large-current thermal protector is connected in series to the second main phase winding or is connected in series to the second main phase winding and the secondary phase winding, one end of the small-current thermal protector and one end of the large-current thermal protector are further respectively connected to power input ends, and the two-way switch is respectively connected to the small-current thermal protector, the large-current thermal protector, an output end of the first main phase winding, and the other end of the second main phase winding.
Dependencies are inferred from the claim text.