JPS61273145A - Cooling method of motor base for various furnaces - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency by providing a groove in a motor base and directly cooling a motor base through cooling medium in the groove. CONSTITUTION:Coolant of cooling medium flows to one end of a groove 5 of a motor base 4 to cool the base 4 through the groove 5 to rise its temperature, and flows out from the other end of the groove 5 as designated by an arrow 8. Accordingly, since the coolant directly cools the base 4, the cooling efficiency is improved. Further, since the thickness of the base 4 may be substantially small even if a blind plate 6 is welded to the base 4, a motor shaft 2 can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a motor-based cooling method for various types of furnaces, and more specifically, a method for stirring or circulating high-temperature gas in a furnace used in the heat treatment industry, new material industry, etc. This is used as a method for cooling the motor base of the motor that drives the fan.

2. Description of the Related Art As a conventional motor-based cooling means of this type, for example, the method shown in FIG. 3 is known. In FIG. 5, 11 is a motor, 12 is a motor shaft, 13 is a fan directly connected to the motor shaft 12 and provided in the furnace to stir or circulate high-temperature gas in the furnace, and 14 is a fan that moves the motor 11 to a high temperature. motor base, to protect from
15 is a cooling tube wound around the motor base 14. That is, the motor 11 is protected from high temperatures by passing a cooling medium through the cooling tube 15. In addition, it is also known to provide a cooling box to cool the motor base 14.

Problems to be Solved by the Invention In the conventional method shown in FIG.
5, the cooling effect is small.

There is a problem in that the motor base 14 becomes substantially thicker by the thickness of the cooling tube 15, and the motor shaft 12 becomes longer. Also, with the method using a cooling box,
When the pressure inside the furnace increases, the components of the box become bulky, increasing the weight and lengthening the motor shaft. The present invention attempts to solve these problems. That is, the present invention:
It is an object of the present invention to provide a method for cooling the motor base of various furnaces, which has a large cooling effect, has a simple structure, and can shorten the motor shaft.

Means for solving the problem A cooling groove was provided in the motor base, and a cooling medium was passed through the groove. In other words, one aspect of the present invention is a furnace in which a fan is provided in the furnace to stir or circulate high-temperature gas in the furnace, and a motor is directly connected to the fan. The motor is characterized by passing a cooling medium through it to protect the motor from high temperatures.

Function: Since the cooling medium is passed through the grooves of the motor base, the motor base is directly cooled by the cooling medium, resulting in a large cooling effect, which allows the thickness of the motor base to be reduced.

Example 1 and 2 show one embodiment of the invention.

In Figure 1, 1 is a motor, 2 is a motor shaft, and 3
a fan 4 that is directly connected to the motor shaft 2 and installed in the furnace to stir or circulate high-temperature gas in the furnace;
1 is a motor base for protecting the motor 1 from high temperatures; 5 is a groove provided in the motor base 4; and 6 is a blind plate covering the motor base 4. Further, in FIG. 2, 7 is an arrow indicating the cooling medium flowing into the groove 5 of the motor base 4, and 8 is an arrow indicating the outflow of the medium.

In the motor-based cooling device configured as shown in FIGS. 1 and 2, the cooling water that is the cooling medium is
As shown by the arrow 7 in the figure, the water flows into one end of the groove 5 of the motor base 4, passes through the groove 5, cools the motor base 4, and raises the temperature.

As shown by arrow 8, it flows out from the other end of groove 5.

Therefore, since the cooling water directly cools the motor base 4, the cooling efficiency is significantly improved.

Although FIG. 2 shows the case where the grooves 5 are concentric grooves, they may also be spiral grooves.

Effects of the Invention The present invention is a method for directly cooling the motor base by providing a groove in the motor base and passing a cooling medium through the groove, so that cooling efficiency is significantly improved, and by increasing the flow rate of the cooling medium, .

The cooling effect can be further increased. Moreover, even when welding a blind plate to the motor base, compared to installing a traditional cooling tube and using a traditional cooling box structure.

Since the actual thickness of the motor base is small, the motor shaft can be shortened.

In particular, in a horizontal furnace, the deflection of the motor shaft is reduced, which is extremely advantageous. Furthermore, since only the grooves are formed on the motor base, the structure becomes significantly simpler.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing an example of an apparatus for carrying out the present invention, FIG. 2 is a sectional plan view taken along cutting line A-A in FIG. 1, and FIG. 3 is an example of a conventional technique. FIG. 1...Motor, 2...Motor shaft, 3...Fan, 4...Motor base, 5...Groove, 6...Blind plate. Patent applicant Ishikawajima-Harima Heavy Industries Co., Ltd. No. 1 Concave No. 2 No. 3

Claims (1)

[Claims] 1. In a furnace in which a fan is installed in the furnace to stir or circulate high-temperature gas in the furnace, and a motor is directly connected to the fan, a groove is provided in the motor base of the motor, and a cooling medium is passed through the groove to drive the motor. A motor-based cooling method for various furnaces, which is characterized by protecting the motor from high temperatures.