Linear motor with an improved cooling structure
First Claim
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1. A linear motor having an electromagnetically operable coil block comprising:
- (a) a stator element having a stator element frame;
(b) a movable element having a movable element frame, said movable element being linearly displaceable relative to said stator element; and
, (c) at least first and second heat dissipation plate portions mounted respectively to said stator element frame and said movable element frame for dissipating heat generated by the coil block, each of said first and second heat dissipation plate portions including a plurality of dissipation fins.
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Abstract
The present invention relates to a linear motor with an improved cooling structure for cooling heat generated from a coil block of the motor. The linear motor includes a stator element having a stator element frame, a movable element having a movable element frame, adapted to linearly move along the stator, and a heat dissipation plate mounted on the stator element frame and the movable element frame, for externally dissipating heat generated from a coil block. Such a structure can prevent over-heating of the linear motor by dissipating heat generated from the motor coil to thereby cool the motor.
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Citations
8 Claims
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1. A linear motor having an electromagnetically operable coil block comprising:
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(a) a stator element having a stator element frame;
(b) a movable element having a movable element frame, said movable element being linearly displaceable relative to said stator element; and
,(c) at least first and second heat dissipation plate portions mounted respectively to said stator element frame and said movable element frame for dissipating heat generated by the coil block, each of said first and second heat dissipation plate portions including a plurality of dissipation fins. - View Dependent Claims (2)
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3. A cooled linear motor comprising:
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(a) a movable element including an electromagnetically operable coil block, said movable element having formed therein a plurality of air passages, at least one of said air passages having a substantially L-shaped section;
(b) at least one temperature sensor coupled to said coil block for sensing heat generated thereby;
(c) a stator element having formed therein a plurality of through holes spaced one from the other for the passage of air therethrough;
(d) at least one first air flow control valve coupled to at least one said through hole of said stator element;
(e) at least one second air flow control valve coupled to at least one said air passages of said movable element; and
,(f) a temperature controlling unit coupled to said temperature sensor and said air flow control valves, said temperature controlling unit being operable responsive to a temperature signal generated by said temperature sensor to selectively open and close said air flow control valve.
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4. A cooled linear motor comprising:
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(a) a movable element including an electromagnetically operable coil block;
(b) at least one temperature sensor coupled to said coil block for sensing heat generated thereby;
(c) a stator element having formed therein a plurality of through holes spaced one from the other for the passage of air therethrough;
(d) at least one air flow control valve coupled to at least one said through hole of said stator element; and
,(e) a temperature controlling unit coupled to said temperature sensor and said air flow control valve, said temperature controlling unit being operable responsive to both a temperature signal generated by said temperature sensor and the relative positions of said movable and stator elements to selectively open and close said air flow control valve.
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5. A cooled linear motor comprising:
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(a) a pair of movable elements each including a movable element frame having an electromagnetically operable coil block;
(b) a pair of stator elements each including an inner side portion having at least one set of permanent magnets sequentially arranged thereon;
(c) a connecting member coupled to extend between said movable element frames; and
,(d) at least one cooling assembly disposed between said connecting member and at least one said movable element frame, said cooling assembly defining an air flow passage for guiding the escape of heat generated by said coil block. - View Dependent Claims (6, 7)
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8. A cooled linear motor comprising:
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(a) a movable element including an electromagnetically operable coil block, said movable element having formed therethrough a plurality of air pipes;
(b) at least one temperature sensor coupled to said coil block for sensing heat generated thereby;
(c) a stator element having formed therein a plurality of through holes spaced one from the other for the passage of air therethrough, said through holes being disposed in open communication with said air pipes of said movable element;
(d) a first air flow control valve coupled to at least one said through hole of said stator element;
(e) a second air flow control valve coupled to at least one said air pipe of said movable element; and
,(f) a temperature controlling unit coupled to said temperature sensor and said air flow control valves, said temperature controlling unit being operable responsive to a temperature signal generated by said temperature sensor to selectively open and close said air flow control valve.
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Specification