JPS59110362A - Linear motor - Google Patents

Abstract

PURPOSE:To effectively cool a linear motor without forcible ventilation or the like by providing a thermoelectric element between the primary side stator and a heat sink unit of the motor and cooling the primary side stator by utilizing Peltier effect. CONSTITUTION:The primary coil unit 2 is provided inside the primary side stator 1 of a cylindrical linear motor which has a linear vibration actuator stator unit at the center, and a plurality of thermoelectric element pair group (thermo modules) 3 are mounted at an equal interval on the outside in a direction perpendicular to the paper surface. The thermoelectric element pair group 3 is composed, for example, by alternately connecting a plurality of N type and P type thermoelectric elements 4 such as bismuth telluride or the like in series via copper electrodes 5, and bonding them to aluminum substrates 6, 7, with a heat sink fin 71. A plurality of suitable temperature detectors 9 are provided on the outer periphery of the stator 1. In this manner, effetive cooling can be performed when the forcible ventilation is not preferable.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a linear motor that can cool the primary stator by providing one thermal lightning element between the primary stator of the linear motor and the radiator. This is related to motors.

Originally, a linear motor does not have a self-cooling ability, so in order to increase the duty factor, it is necessary to take some kind of cooling means. This invention was conceived as a cooling means in cases where forced ventilation, etc., is difficult, and the output of a linear motor is small, for example, although there is 1 m of forced oil. The heat generated from the primary stator of a linear motor is transferred to a thermoelectric cable using the Peltier effect, and then to a C1 dissipator. By adjusting the current flowing through the C1 thermoelectric element, the temperature of the stator can be controlled. It is easy to control.

Next, this invention will be explained with reference to FIG. Ij.

In FIG. 1, a primary coil section 2 is installed inside a primary stator 1 of a cylindrical linear motor that has a linear vibration actuator section in the center, and a primary coil section 2 is installed on the outside. A plurality of pairs of thermal lightning elements (ream modicols) 3 are mounted at equal intervals in a direction perpendicular to the plane of the paper. The thermal lightning element pair group 3, as shown in FIG.
A plurality of N type and P type thermoelectric elements 4 such as i2T-Q, :i) are connected in series with copper electrodes 5, and aluminum hanging plates 6. It is equipped with 71.

Further, a plurality of suitable temperature detectors 9 are provided on the outer periphery of the primary stator 1.

In FIG. 2, when a current I is passed in the direction of the arrow from the Ni lead wire 8, heat is removed from the aluminum group (6) due to the Peltier effect, and the heat is radiated from the fins 71 of the aluminum substrate 7. The primary coil portion 2 that is in contact with is cooled.

As shown in Figure 3, the overhang of the primary stator of the linear septa is controlled by the temperature detector and current controller (and the DC power supply DI).
By controlling the current flowing through the thermal lightning element, the temperature is maintained within an appropriate range.

As is clear from the above explanation, this invention is applied to the cold fJI of the primary stator of a linear motor, and it is possible to perform the effective 21+7JI on unfavorable platforms such as forced ventilation. There are things that can be done.

[Brief explanation of the drawing]

Fig. 1 is a luminescent view of a cylindrical linear motor, Fig. 2 is an enlarged view of a pair of thermal lightning elements, and Fig. 3 is a 10-point diagram of current control I of thermoelectric elements. (Explanation of symbols representing main parts of the drawing) 1...Primary side stator 2...Primary side coil 3.
...Thermoelectric element pair group 4...Thermoelectric element special applicant
A Mata Co., Ltd.

Claims (1)

[Claims] A thermal lightning element is installed between the primary stator and the radiator of the linear motor, and a temperature sensor is installed on the primary stator.
A linear motor characterized by having a thermoelectric element equipped with a current controller.