JPH08110139A - Cooling mechanism - Google Patents

Abstract

PURPOSE: To allow cooling air to collide against a desired cooling surface while retaining an angle between the cooling surface and improve cooling efficiency by a method wherein one end of a hollow pipe is blockaded and air is guided from a fan to the other end of the same pipe while air, sent out of a slit or a hole of the hollow pipe, is hit onto a material to be cooled. CONSTITUTION: A blow off slit 5 is cut on a hollow pipe 4 and a cap 3 is fitted to the upper end face while a coupling flange 15 is fitted to the lower end face and a fan 14 is connected to the flange 15 through a flexible tube 6. Air, sent from the fan 14, is blown out through the slit 5 and the blown air 7 is collided against the cooling surface of a part A1, the parts A1, B2 are installed so as to pinch the hollow pipe 4. The blown-out air 7 is hit onto the cooling surface with an angle and the flow speed of air can be increased compared with a conventional case wherein air from the fan 14 is used directly whereby heat transmission rate from a material to be cooled to air can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cooling mechanism for various mechanical parts, electronic parts, optical parts, etc.
In particular, the present invention relates to a cooling mechanism that enables air cooling even when the components are close to each other and are mounted in a narrow place where cooling air cannot be sent by an ordinary fan.

[0002]

2. Description of the Related Art A conventional cooling mechanism will be described with reference to the drawings.
FIG. 2 is a part of a certain device and is assumed to be composed of a part A1, a part B2, and a part C12.

In this configuration, when it is necessary to cool the surfaces a and b of the component A1 in particular, and when cooling air is blown from the direction D in the figure, a certain amount of air flows to the surface a, but from the surface b. If the cooling becomes insufficient and air is blown from the E direction, some air will flow to the b side, but the cooling from the a side will be insufficient.

Therefore, in this case, the object is achieved by blowing air from the F or G direction.

[0005]

However, when the cooling method having the above-mentioned configuration is adopted, there are the following problems. Depending on the device configuration, it may not be possible to install a fan in the F or G direction, or it may not be possible to introduce air from the F or G direction.

In order to increase the flow velocity of air and enhance the air cooling effect, it is not preferable to make the space between the adjacent parts too small, and it is necessary to reduce the inflow resistance of the air with a certain space, so that the device is small in size. It becomes an obstacle in terms of conversion. When the air is blown from the F or G direction, it is not possible to control the cooling rate on the a surface and the b surface, for example. That is, it is not possible to intentionally control the amount of cooling on the side a by making it smaller than the amount of cooling on the side b.

When the air is blown from the F or G direction, the cooling air flows in parallel on the cooling surface, so that the cooling efficiency is not so good. As shown in FIG. 8, the axial fan 20 is installed above the object to be cooled 22, and particularly, the cooling surface c23 and the cooling surface d are provided.
When it is desired to cool the cooling air 24, most of the air flow 24 collides with the upper surface 25, and only the remaining air flow contributes to the cooling of the cooling surface c23 and the cooling surface d24. Not good.

The amount of cooling air is fixed to the value at the time of design, and the amount of air cannot be adjusted for each part after the air-cooled parts are installed in the apparatus. Therefore, the present invention has been made by paying attention to the above points, it is possible to send a sufficient cooling air between the parts that are close to each other, and control the cooling amount on each cooling surface, It is an object of the present invention to provide a cooling mechanism capable of improving the cooling efficiency by causing air to collide with a desired cooling surface at an angle to improve the cooling efficiency.

[0009]

In order to solve the above-mentioned problems, in the present invention, one or more hollow pipes having slits or holes on their side surfaces are connected to each other by a flexible tube. Then, one end of the hollow pipe group is closed and air blown from a blower is guided to the other end surface.

In particular, when air cooling is performed using two or more hollow pipes, the opening areas of the slits or holes provided in the pipes are made equal or different for each hollow pipe. Further, a mechanism for varying the opening area was incorporated in the hollow pipe.

[0011]

With the above construction, air can be sent between the parts that are close to each other, and when there are two or more cooling surfaces, the amount of air blown to each surface is controlled. Therefore, it is possible to perform cooling according to the amount of heat generation.

Further, by making the opening area variable, it becomes possible to adjust the air volume after the device is incorporated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 5 is a block diagram of the hollow pipe portion according to the present invention, and FIG. 6 is a sectional view of the same part. As shown in this figure, a blowing slit 5 is formed in the hollow pipe 4. Assemble the cap 3 on the right end face and the relay flange 15 on the left end face.
Insert. At this time, it is more effective to apply a sealing agent so that air does not leak from the joint surface or to sandwich a sealing agent such as rubber. When a plurality of hollow pipes 4 are used, the relay flanges 15 are inserted in place of the caps 3 and the flexible flanges 6 connect the respective relay flanges 15.

FIG. 1 (a) is a top view showing a state in which one member assembled as described above is used and incorporated in an apparatus, and FIG. 1 (b) is a side view thereof. As shown in this figure, a fan 14 is connected to the other end of the relay flange 15 via a flexible tube 6. The hollow pipe 4 is installed between the parts A1 and B2. The air sent from the fan 14 becomes the blowing air 7 through the blowing slit 5 and collides with the cooling surface of the component A. The blown air 7 collides with the cooling surface at an angle, and the flow velocity of the air can be increased as compared with the case where the air from the fan is directly used as in the conventional case. The cooling efficiency is improved.

By the way, as shown in FIGS. 3 (a), 3 (b) and 3 (c), the shape of the opening formed in the hollow pipe 4 includes a plurality of wide slits 8, narrow slits 9, and through holes 10. Any shape may be used as long as the required opening area is secured such as by providing.

FIG. 4 is a top view showing an embodiment in which two hollow pipes 4 are used. As shown in this figure, the two hollow pipes 4 are flexible tubes 6
Blowing cooling air from two directions perpendicular to each other via
The a surface 11 and the b surface 13 of the component A1 are cooled intensively. On the other hand, hydrodynamic pipe friction acts on the air flowing in the hollow pipe 4 and the flexible tube 6, so that a pressure loss occurs along the flow path. Therefore 2
When the opening areas of the one slit portion, that is, the wide slit 8 and the narrow slit 9 are the same, the blowout amounts from the two slits are different, and the cooling amounts on the a-face 11 and the b-face 13 are unbalanced. . Therefore, in order to make the amount of air blown out from the two slits almost the same,
A narrow slit 9 is formed in the tube near the fan 14, and a wide slit 8 is formed in the tube far from the fan 14.

In the above-mentioned embodiment, the case where the respective blowing amounts are made equal has been shown. However, for example, in the device configuration shown in FIG. 4, it is necessary to cool the b surface 13 more than the a surface 11. In particular, the cooling amount of the b-plane 13 can be increased by making the opening areas of the slits substantially the same.

That is, by changing the opening area variously, the amount of cooling air can be controlled for each place to be cooled. FIG. 7 is a perspective view showing an embodiment of a slit opening area adjusting mechanism. The adjustment tube A16 has an opening portion 1 whose opening area continuously changes as the adjustment tube A16 is rotated.
9 is formed. An adjusting pin 18 is provided on the shaft end so as to project. The adjustment tube A16 is inserted into the hollow pipe 4 with some play left, so that the adjustment tube 16 can be rotated with respect to the hollow pipe 4. In this state, as shown in FIG. 1 and FIG. 4, the opening area is reduced by moving the adjustment pin 18 in the H direction while monitoring the heat generation amount of the component A, and by moving it in the I direction, the opening area is reduced. The amount of air blown out can be changed accordingly, and the cooling amount can be adjusted. Figure 7
The adjustment tube B17 of (b) has a plurality of opening holes 20 formed in place of the opening portion 19 of the adjustment tube A16 so that the opening area changes stepwise in the rotational direction. The same function is provided, and the effect of the present invention is not influenced by the shape of the opening provided in the adjust tube.

[0019]

As described above, according to the present invention,
One or two or more hollow pipes having slits or holes formed in the side surface and the hollow pipes are connected to each other by a flexible tube, and one end of the hollow pipe group is closed, and the other end face is connected to a blower. Since it is configured to guide the air blown out of, even if the distance between the adjacent parts cannot be made large, it is possible to send in an amount of air necessary for cooling the parts, and sufficient air cooling is performed,
It is possible to maintain and improve device performance such as maintenance of component performance and life.

Further, particularly when air cooling is performed using two or more hollow pipes, the opening areas of the slits or holes provided in the pipes are made equal or different for each hollow pipe. It is possible to make the amount of air from each blowout port the same or to change the amount of blown air according to the amount of heat generated by the object to be cooled.

Further, since the hollow pipe has a built-in mechanism for varying the opening area, the amount of air can be adjusted according to the amount of heat generated by each component after the device is assembled.

[Brief description of drawings]

FIG. 1 is a top view showing an embodiment of a cooling mechanism according to the present invention.

FIG. 2 is a perspective view showing a conventional cooling method.

FIG. 3 is a top view showing the shape of the slit portion of the cooling mechanism according to the present invention.

FIG. 4 is a top view showing another embodiment of the cooling mechanism according to the present invention.

FIG. 5 is a structural explanatory view of a hollow pipe portion according to the present invention.

FIG. 6 is a cross-sectional view illustrating a structure of a hollow pipe portion according to the present invention.

FIG. 7 is a perspective view illustrating an opening area adjustment mechanism of a slit portion according to the present invention.

FIG. 8 is an explanatory diagram showing a conventional cooling method.

[Explanation of symbols]

 4 Hollow pipe 5 Blow-off slit 6 Flexible tube 14 Fan 15 Relay flange 16 Adjust tube 17 Adjust tube 18 Adjustment pin

Claims (3)

[Claims] 1. A structure including one or more hollow pipes having slits or holes formed in a side surface thereof and a flexible tube connecting the hollow pipes to each other, and further closing one end of the hollow pipe group. A cooling mechanism, wherein air blown from a blower is guided to the other end surface, and air blown out from the slits or holes is applied to the object to be cooled. 2. The cooling mechanism according to claim 1, wherein two or more hollow pipes are used, and the opening areas of slits or holes provided in the pipes are changed for each hollow pipe. 3. A cooling mechanism according to claim 1, wherein a mechanism for varying the opening area of the hollow pipe is incorporated.