Linear motor and linear compressor using the same
First Claim
1. A linear motor comprising:
- a bobbin;
first and second coil groups wound on the bobbin to allow driving power to be applied to the coil groups; and
a magnet adapted to be linearly reciprocated under the influence of a magnetic field that is produced by the coil groups depending on load current flowing through the coil groups,wherein each of the coil groups comprises a main coil and an auxiliary coil, and the main coils are connected with each other in parallel,wherein the first coil group has a first main coil and a first auxiliary coil, and the second coil group has a second main coil and a second auxiliary coil,wherein a base tap is connected to first ends of the first and second main coils connected in parallel, the base tap being connected to a power supply unit,where a first connecting tap is connected to second ends of the first and second main coils connected in parallel and a first end of the first and second auxiliary coils connected in series, andwherein a second connecting tap is connected to a second end of the first and second auxiliary coils connected in series.
1 Assignment
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Accused Products
Abstract
Disclosed herein is a linear motor in which a plurality of coil groups are connected in series or in parallel and driving power is applied to part or all of the coil groups according to load applied to the linear motor, thereby achieving improved motor efficiency with a reduced motor size. The linear motor includes a bobbin, the plurality of coil groups wound on the bobbin, the plurality of coil groups being connected in series or in parallel to allow the driving power to be applied to part or all of the coil groups, and a magnet adapted to be linearly reciprocated by a magnetic field produced by the coil groups depending on load current flowing through the coil groups. As a result of connecting the plurality of coil groups, which are formed of a plurality of coil conductors, in series or in parallel, the capacity of the coil groups is variable depending on the load of the motor, resulting in improved motor efficiency. Also, using the coil conductors having a small cross sectional area enables reduction in the size of the motor.
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Citations
10 Claims
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1. A linear motor comprising:
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a bobbin; first and second coil groups wound on the bobbin to allow driving power to be applied to the coil groups; and a magnet adapted to be linearly reciprocated under the influence of a magnetic field that is produced by the coil groups depending on load current flowing through the coil groups, wherein each of the coil groups comprises a main coil and an auxiliary coil, and the main coils are connected with each other in parallel, wherein the first coil group has a first main coil and a first auxiliary coil, and the second coil group has a second main coil and a second auxiliary coil, wherein a base tap is connected to first ends of the first and second main coils connected in parallel, the base tap being connected to a power supply unit, where a first connecting tap is connected to second ends of the first and second main coils connected in parallel and a first end of the first and second auxiliary coils connected in series, and wherein a second connecting tap is connected to a second end of the first and second auxiliary coils connected in series. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification