JP2009022081A - Motor and motor system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor which utilizes heat generated due to motor loss effectively for cooling the motor. <P>SOLUTION: The motor 1 has a thermoelectric power generation element 2 fixed to a heat generating portion or a high temperature portion as a major configuration. The motor 1 may have the thermoelectric power generation element 2 fixed to a rotor 4 or a built-in circuit 5, or fixed to a stator 3 having a wiring portion shown in Fig. A cooling fan 6 is driven using electric energy obtained by the thermoelectric power generation element 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a motor and a motor system, and more particularly, to a motor and a motor system that can be effectively used for improving the output of heat generated by motor loss and cooling the motor.

  The heat generated in the coil due to the loss at the time of driving the motor causes burnout of the armature due to overheating and shortening of the motor life. Therefore, it is important to release this heat to the outside, and a technique for effectively transferring the heat generated inside the armature to a housing member such as a flange and efficiently releasing it outside the motor machine is conventionally known. Proposed by

  For example, in the technique disclosed in Patent Document 1, a metal rod is embedded at a plurality of locations inside a molded stator so as to contact the side surface of the armature core with respect to the stacking direction of the armature iron plate. The entire motor is efficiently cooled by effectively cooling the armature by exposing the end portion of the metal bar to the facing portion and directly contacting the facing portion of the load side end bracket.

Patent 3780164 "Rotating electric machine"

  However, including the above-mentioned technology, the heat energy is wasted simply by releasing the generated heat to the outside. For example, it would be convenient if such energy could be used for effective motor cooling.

  Therefore, the problem to be solved by the present invention is to provide a motor and a motor system that can effectively use the heat generated by motor loss, for example, for cooling the motor, excluding the problems of the prior art.

  As a result of examining the above problems, the inventor of the present application has found that this can be solved by using a thermoelectric power generation element, and has reached the present invention. That is, the invention claimed in the present application, or at least the disclosed invention, as means for solving the above-described problems is as follows.

(1) A motor in which a thermoelectric generator is attached to a heat generating part or a high temperature part.
(2) A motor in which a thermoelectric generator is attached to at least one of a stator, a rotor, and a built-in circuit.
(3) The motor according to (1) or (2), wherein a cooling fan provided inside is driven by electric power generated by the thermoelectric generator.
(4) A motor having a heat generating element attached to a heat generating part or a high temperature part, and a cooling fan provided outside the motor and driven by electric power generated by the thermoelectric power generating element. Motor system.

  Since the motor and the motor system of the present invention are configured as described above, according to this, the thermal energy generated by the motor loss can be used effectively. In addition, since the motor heat generation is suppressed, the efficiency of the motor can be increased and the output can be increased.

  In addition, in the configuration in which the motor cooling fan is provided inside or outside the motor, this is driven by the electric power generated by the thermoelectric power generation element, so that the suppression of the motor heat generation and the efficiency / output improvement effect of the motor can be further enhanced. it can. Of course, it also saves energy.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view illustrating the configuration of the motor of the present invention. Each figure has shown the example of arrangement | positioning of a thermoelectric power generation element. As shown in these figures, the main configuration of the motor 1 is that one or a plurality of thermoelectric power generation elements 2 are attached to the heat generating portion or the high temperature portion as the entire motor. The heat generating part is a winding part or a built-in circuit, and the high temperature part is a part where the temperature rises due to heat conduction of heat generated in the heat generating part even if the heat generating part itself does not generate heat, such as a housing.

  In FIG. 1, the thermoelectric generator 2 is attached to a stator 3 having a winding part as a heat generating part, attached to a rotor 4 having a winding part as a heat generating part, or attached to a built-in circuit 5 as a heat generating part. Although all the configurations are shown, it is not necessary to provide the thermoelectric power generation elements 2 in all of these portions, and may be a part thereof. Further, in addition to the one or more thermoelectric power generation elements 2 attached to the heat generating part, one or a plurality of thermoelectric power generation elements are provided in a case or the like that is a high temperature part, and one or more only in a case or the like that is a high temperature part The structure which provides a thermoelectric power generation element may be sufficient.

  As shown in FIG. 1, by attaching a thermoelectric power generation element 2 to a motor heat generating portion, it is possible to convert heat energy that has been conventionally only discharged and discharged into electric energy. As described above, the effects of effective use of thermal energy, suppression of motor heat generation, and improvement of motor efficiency and output can be obtained as described above.

  FIG. 2 is a cross-sectional explanatory view showing the configuration of the motor system of the present invention which is composed of a motor cooling fan and a motor externally. As shown in FIG. 2 and FIG. 1, the motors 1 and 11 of the present invention are provided with the internal cooling fan 6 or the external motor cooling fan 17 so that the thermoelectric generator generates power. These can be driven by the generated electric power, and the suppression of motor heat generation and the efficiency / output improvement effect of the motor can be further enhanced. Note that the arrangement and number of thermoelectric power generation elements 12 shown in FIG. 2 are exemplary as in FIG.

  According to the motor and motor system of the present invention, it is possible to effectively use heat energy due to motor loss, suppress motor heat generation, improve motor efficiency and output, and can be used for cooling the motor itself. It is an invention with high utility value in a wide range of fields where motors are used, such as automation in the industrial, consumer and transportation machinery fields.

It is sectional view explanatory drawing which shows the structure of the motor of this invention. It is sectional view explanatory drawing which shows the structure of this invention motor system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 11 ... Motor 2, 12 ... Thermoelectric power generation element 3, 13 ... Stator 4, 14 ... Rotor 5, 15 ... Built-in circuit 6 ... Cooling fan (internal)
17 ... Cooling fan (external)
8, 18 ... axis

Claims (4)

A motor characterized in that a thermoelectric generator is attached to a heat generating part or a high temperature part. A motor comprising a thermoelectric generator attached to at least one of a stator, a rotor, and a built-in circuit. The motor according to claim 1 or 2, wherein a cooling fan provided inside is driven by electric power generated by the thermoelectric generator. A motor system comprising: a motor in which a thermoelectric generator is attached to a heat generating portion or a high temperature portion; and a cooling fan provided outside the motor and driven by electric power generated by the thermoelectric generator. .

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