JP2564217Y2 - Rotating machine with detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating machine with a detector, and more particularly to a heat insulation and cooling structure for a detector.

[0002]

2. Description of the Related Art Generally, a rotating machine constituting an electric motor or a generator used for automatic control of a machine tool or the like is required to be small and highly accurate, and is provided with a detector for detecting a position or a speed. Things are often used. Figure
3 is a cross-sectional view showing an example of a conventional rotating machine with a detector. The rotating machine has a main body 1, a bracket 2 is provided at a front end of the main body 1, and a rear end of the main body 1. Is provided with a cover 4 having cooling fins 3 on the outer surface. A rotor 6 is rotatably supported in the main body 1 by a bracket 2 and a flange 5 provided in the main body 1. A shaft 7 of the rotor 6 detects a rotation position or a rotation speed of the rotor 6. The rotating shaft 9 of the detector 8 is tapered. Further, a detector 8 is coupled to the flange 5 by a coupling 10, and a processing circuit 11 for processing a detection signal of the detector 8 is disposed behind the detector 8. In addition, 12 is a winding. In such a rotating machine with a detector, when the rotating machine is used for an electric motor used for a machine tool or the like, the rotating machine is small,
In addition, it is required to output a high torque. For example,
The winding 12 of the rotating machine rises by 50 ° C. to 100 ° C. with respect to the air temperature. That is, if the temperature is 40 ° C., the winding 10
When the temperature reaches 40 ° C., the ambient temperature of the detector 8 also rises to about 85 ° C., and the function of the processing circuit 11 including a semiconductor integrated circuit or the like that processes the signal of the detector 8 may be reduced or malfunction may occur. Therefore, a semiconductor integrated circuit or the like mounted on the processing circuit 11 is used after being subjected to high-temperature screening.

[0003]

Since the conventional rotating machine with a detector is constructed as described above, an expensive high-temperature screened semiconductor integrated circuit or the like is used. There was a problem that it would rise. In addition, there is a problem that even a semiconductor integrated circuit subjected to high-temperature screening may have a reduced life when used for a long time at high temperature.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotating machine with a detector capable of suppressing an increase in the ambient temperature of the detector and its processing circuit. To provide.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and comprises a detector for detecting a rotational position or a rotational speed of a rotor, and a material having high thermal conductivity covering the detector. A cover forming a part of the main body, a processing circuit integrally formed with the detector and processing a detection signal of the detector, and heat insulation made of a material having high thermal insulation provided between the rotor and the processing circuit Member and end of the processing circuit
The cover is formed integrally with the cover to cover the portion;
And a space for heat shielding in the cover in cooperation with the heat insulating member.
And a projection to be formed .

Further, a detector for detecting the rotational position or the rotational speed of the rotor, a cover forming a part of a main body made of a material having high thermal conductivity, which covers the detector, and a detection unit formed integrally with the detector. A processing circuit for processing the detection signal of the detector, a heat insulating member provided between the rotor and the detector, made of a material having high thermal insulation, and covering an end of the processing circuit
So that it is formed integrally with the cover, the cover and heat insulation
Forming a space for heat shielding in the cover in cooperation with the member
And a projection .

[0007]

[0008]

With the construction described above, the rotating machine with a detector of the present invention heat shields the periphery of the detector from the heat-generating portion of the rotating machine with a heat insulating member having high thermal insulation, and provides a cover with good heat conductivity. Absorbs the heat around the detector and radiates it to the outside, thereby suppressing an increase in the ambient temperature of the detector. Also, the sky generated by using the protrusion
Depending on the interval, a higher cooling effect is obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same parts as those in FIG. 3 described above are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is a sectional view showing the structure of a rotating machine with a detector according to the present invention. A support portion 14 made of a material having high thermal insulation is mounted between the main body 1 and a cover 4 made of a material having good heat conductivity.
A panel 15 made of a material having high thermal insulation is mounted between the third side and the processing circuit 11 side. In FIG.
The projection 16 surrounding the end of the processing circuit 11 is integrated on the inner surface of
The processing circuit 11 is formed and the projection 16, the panel 15, and the power
Bar 4 surrounds the inside. Inner circumference of support part 14 and panel 1
The gap between the outer periphery of the support 5 and the left space A and the right space B of the support portion 14 and the panel 15 has little convection. In such a configuration, even if the windings 12 generate heat, the main body 1 and the cover 4 are thermally insulated by the support portions 14 and heat conduction to the cover 4 is suppressed. In addition, support part 1
4 and the panel 15, the heat in the space A close to the winding 12 is
To the space B. Further, the cover 4 absorbs the heat of the space B and radiates the heat to the outside, so that the temperature rise of the space B is moderated. In addition, integrated with cover 4
The protrusion 16 made of a material having good heat conductivity made of
Suppress the temperature rise of the space B1 to efficiently absorb the heat of 1
Control. In addition, air with low thermal conductivity is interposed in the space C,
The heat transmitted from the support portion 14 is radiated from the vicinity of the fin 31,
The temperature gradient of the temperature of the space C> the temperature of the space B1 is created. An example
For example, the material of the support portion 14 and the panel 15 is made of glass fiber.
Polyacetal and cover 4 made of aluminum
When the temperature of the winding 12 is 140 ° C.,
Experiments show that the ambient temperature of road 11 can be kept at 70 ° C.
(In the configuration of FIG. 3 which is an example of the prior art,
In comparison, the ambient temperature of the processing circuit 11 could be reduced by 15 ° C.).

[0011]

[0012] Figure 2 is a sectional view showing the structure of a detector with a rotating machine of the invention of claim 2, the description thereof is omitted denote the same parts in FIG. 1 and Figure 3 described above . In the rotating machine with a detector shown in FIG. 2 , a panel 17 made of a material having high thermal insulation is fastened between the main body 1 and the cover 4 adjacent to the flange 5 and connected to the detector 8. The coupling 10 is connected to the panel 17, thereby isolating the panel 17 from the rotor 6 and the detector 8, and the panel 17 insulates the entire detector 3 from the heat generating portion of the rotating machine 1. By using a material having high thermal insulation for the portion 7a of the rotating shaft 7 facing the panel 17, the heat insulating effect is further improved. Further, a protrusion is provided on the inside of the cover 4 of the rotating machine with the detector.
18 is formed integrally, the detector by the cover 4 is used.
8 has a high endothermic effect at an ambient temperature.

[0013]

[0014]

As described above, according to the rotating machine with the detector of the present invention, the heat insulating part of the rotating machine shields the periphery of the detector from the heat generating portion of the rotating machine with the heat insulating member having high thermal insulation, and the cover has good heat conductivity. The structure is designed to absorb the heat around the detector and radiate it to the outside, so that it is possible to suppress the rise in the ambient temperature of the detector, improve the reliability, and perform an expensive high-temperature screened semiconductor integrated circuit. , And cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a rotating machine with a detector according to the invention of claim 1;

FIG. 2 is a configuration of a rotating machine with a detector according to the invention of claim 2;
FIG.

FIG. 3 is a sectional view showing a configuration of a conventional rotating machine with a detector.
You.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 4 Cover 6 Rotor 8 Detector 11 Processing circuit 15 Panel 16 Projection 17 Panel 18 Projection

Claims (2)

(57) [Scope of request for utility model registration] 1. A rotating machine with a detector, comprising: a detector for detecting a rotational position or a rotational speed of a rotor; and a cover that covers the detector and forms a part of a main body made of a material having high thermal conductivity. A processing circuit configured integrally with the detector and processing a detection signal of the detector; a heat insulating member made of a material having high thermal insulation provided between the rotor and the processing circuit; Formed integrally with the cover to cover the end
And the cover and the heat insulating member cooperate with each other.
A rotating machine with a detector , further comprising: a projection for forming a heat shielding space . 2. A rotating machine with a detector, comprising: a detector for detecting a rotation position or a rotation speed of a rotor; and a cover that covers the detector and forms a part of a main body made of a material having high thermal conductivity. A processing circuit configured integrally with the detector and processing a detection signal of the detector; a heat insulating member made of a material having high thermal insulation provided between the rotor and the detector ; Cover the edge
So that it is formed integrally with the cover, the cover and heat insulation
Forming a space for heat shielding in the cover in cooperation with the member
A rotating machine with a detector , comprising: a projection .