JPH03126293A - Cooling of control panel - Google Patents

Abstract

PURPOSE:To enable heat to be radiated to the outside efficiently and restrict temperature increase within a container by allowing heating components within the container to contact a heat sink which is placed on one side surface of the container directly and heat of the heating components to be radiated to the outside after the heat is absorbed by the heat sink directly. CONSTITUTION:When heat is generated in heating components 1, the generated heat is absorbed directly by a heat sink 3 since the heating components 1 are in direct contact with the heat sink 3, the temperature at the inside of the heat sink 3 rises and temperature difference is formed in reference to the outside, the heat moves toward the inside or outside and heat of the heating components 1 is constantly radiated toward the outside, thus performing cooling to prevent temperature rise within the enclosure 2. In this case, by further improving cooling efficiency while circulating external air forcedly by a fan 7 for cooling, the temperature within the enclosure 2 can be controlled to be below a certain value.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for cooling a control panel, and more specifically, to a method for cooling a control panel in which heat-generating components such as electronic components are housed in a sealed housing. Regarding the method.

[Conventional technology]

A conventional control panel and its cooling method will be explained with reference to FIGS. 3 and 4. As shown in FIG. (2)
and a heat sink (3) attached to the negative side of the housing (2), which absorbs heat generated from the heat generating components <1) and radiates the heat to the outside in order to keep the temperature inside the housing constant. Configured with the necessary features. Further, the heat generating component (1) is
As shown in Figure 3, it is attached to a small heat sink part (4) within the housing (2), and the heat sink part (4) directly absorbs the heat of the heat generating component (1). In order to increase the heat generation efficiency of (1), heat is first radiated into the housing (2). Further, a fan (5) is disposed below the heat sink portion (4), and the fan (5) causes the heat sink portion (4) to
The heat radiated from the housing (2) is caused to convect within the housing (2). Further, the heat sink (3) is
Approximately half of the heat sink (3) is inside the housing (2), and the remaining half is exposed outside the housing (2), and the fan (6) attached to the inner upper end of the heat sink (3) allows the heat sink (3) to be heated by the fan (6). The air convecting inside is forced into the heat sink (3), and the cooled air is sent out from an opening (3A) formed at the inner lower end. On the other hand, a fan (7) is also attached to the outer lower end of the heat sink (3), which sends outside air into the heat sink (3).
The opening of the heat sink (3) formed at the outer upper end (
3B), the air whose temperature has increased through heat exchange is sent out. That is, as shown in FIG. 4, the heat sink (3) has a portion located inside the housing (2) and
) is defined by a shielding plate (3C) and a portion located outside, and heat exchange is performed as described above via a heat sink body (3D) located in the above-mentioned portion with the shielding plate (3C) as a boundary. ing.

[Problem to be solved by the invention]

However, in the conventional control panel cooling method, as mentioned above, the air that has risen due to the heat of the heat generating component (1) is once convected within the housing (2), and then the heat of the rising air is transferred to the heat sink. According to (3), the control panel is cooled by an indirect method of radiating heat to the outside of the housing (2). As a result, the process from heat generation to heat radiation is long, reducing heat radiation efficiency and making it impossible to perform efficient cooling. In addition, since the process goes through a process of once raising the temperature inside the casing (2), there is a risk that the temperature rise inside the casing (2), along with poor cooling efficiency, will have an adverse effect on other parts. There was that.

A cooling technology similar to the one described above was published in "Heat Countermeasure Design for Electronic Equipment" (November 2, 1981) by Kinji Ito and two others.
0, published by Nikkan Kogyo Shimbun), pages 99 to 106 of the "Sealed casing" section, or Ohm Electric Co., Ltd.'s catalog of heat exchangers for control panels, BOXFAN J. Both have the above-mentioned problems.

The present invention was made to solve the above problems, and
The purpose of the present invention is to provide a method for cooling a control panel, which can efficiently radiate heat generated in heat-generating components to the outside by curtailing the cooling process within the housing, and can suppress a rise in temperature within the housing.

(Means for Solving the Problems) The method for cooling a control panel of the present invention includes bringing heat-generating components inside the housing into direct contact with a heat sink disposed on one side of the housing.
The heat from the heat generating components is directly absorbed by the heat sink and then radiated to the outside.

[Effect]

According to the present invention, the heat generated in the heat generating component can be directly absorbed by the heat sink and radiated directly to the outside of the casing.

〔Example〕

Hereinafter, based on an embodiment shown in FIGS. 1 and 2, parts that are the same as or equivalent to those of the conventional art will be given the same reference numerals, and the description thereof will be omitted, and the features of the present invention will be mainly described. In addition, in each figure,
FIG. 1 is a sectional view showing the concept of a control panel suitably used in carrying out the method of the present invention, and FIG. 2 is a sectional view showing a heat sink in FIG. 1.

First, a control panel suitably used when carrying out the method of the present invention will be explained based on FIGS. 1 and 2. As shown in FIG. (2) is constructed by being directly attached to the heat sink (3) disposed on the - side.

A fan (
6) is attached to send the air inside the casing (2) into the heat sink (3), and send it out into the casing (2) through the opening (3A) formed at the inner upper end. A fan (7) is attached to send outside air into the heat sink (3), and is configured to send outside air through an opening (3B) formed at the outer lower end. In addition, the heat sink (3) is as shown in FIG.
A shielding plate (3C) is provided that defines an inner half and an outer half.

Next, to explain one embodiment of the method of the present invention in the control panel, when heat is generated in the heat generating component (1), the generated heat is generated because the heat generating component (1) is in direct contact with the heat sink (3). is directly absorbed by the heat sink (3), the temperature inside the heat sink (3) rises, and a temperature difference is formed between the heat sink (3) and the outside, and the heat moves from the inside to the outside of the heat generating component (1). Heat is constantly radiated to the outside and cooled to suppress the temperature rise inside the casing (2). On this occasion,
The fan (7) is used to forcefully circulate outside air for cooling, thereby further improving the cooling efficiency and, in turn, suppressing the temperature inside the casing (2) from rising above a certain value.

As explained above, according to one embodiment of the method of the present invention,
Since the heat generated in the heat-generating component (1) is directly radiated to the outside, the cooling efficiency inside the housing (2) is improved, and the temperature rise inside the housing (2) can be suppressed. There is no adverse thermal effect on the parts.

In the above embodiment, only the case where a part of the heat generating component (1) is attached to the heat sink (3) was explained.
If all of the heat generating components (1) can be attached to the heat sink (3), the air inside the housing (2) (air that does not rise due to other components) will be transferred to the heat sink (3) as shown in Figure 2. ), there is no need to forcefully circulate the heat sink (3) in such a case.
C) eliminates the need to divide the heat sink into two parts, so parts such as the fan (6) inside the heat sink (3) can be omitted.

(Effects of the Invention) As described above, according to the present invention, it is possible to efficiently radiate the heat generated in the heat generating components inside the housing to the outside, and to suppress the temperature rise inside the housing significantly compared to the conventional It is possible to eliminate adverse thermal effects on components.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the concept of a control panel suitably used when implementing the method of the present invention, FIG. 2 is a sectional view showing the heat sink in FIG. 1, and FIG. 3 is a sectional view showing a conventional control panel. 1, and FIG. 4 is a sectional view showing the heat sink in FIG. 3. In each figure, (1) is a heat generating component, (2) is a housing, and (3) is a heat sink. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a control panel cooling method in which heat generated from a heat generating component housed in a housing is absorbed by a heat sink disposed on one side of the housing and radiated to the outside, the heat generating component is brought into direct contact with the heat sink. A method for cooling a control panel, characterized in that the heat of the heat generating components is directly absorbed by a heat sink and then radiated to the outside.