JP2000261176A - Cooling structure/method for cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure/method of a cabinet, which can uniformly cool inside the units even if heat generation amounts from the respective units differ, in the cooling cabinet where the plural units are mounted and convection guide boards are installed between the units. SOLUTION: In structure where units 2A-2D in which plural electronic circuit packages 3 are stored are piled on a cabinet 1 in a vertical direction by providing convection guide boards 4A-4D between the units. The heights of the convection guide boards 4A-4D are formed in accordance with the heat generation amounts of the units mounted below the convection guide boards. The amount of air flowing in the unit of large heat generation amount is increased and the units can uniformly be cooled with such constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure and a method for cooling a cabinet in which a unit is mounted in a communication device.

[0002]

2. Description of the Related Art FIG. 5 shows a structure in which a plurality of conventional bookshelf type units are mounted on a cabinet and cooled by air cooling.

In FIG. 5, a cabinet 1 has a bookshelf structure in which a unit 2 accommodating a plurality of electronic circuit packages 3 is mounted.

FIG. 6 is a view taken in the direction of the arrow A in FIG. 5, and the cabinet 1 is provided with a convection guide plate 4 between each unit. Each convection guide plate 4 is defined by a shield plate that is inclined forward and backward, and an intake opening 9 is formed on the lower front side of each unit, and an exhaust opening 10 is formed on the rear upper side of each unit. ing.

[0005] With such a structure, outside air is taken in from each unit through the intake opening 9, passes between the electronic circuit packages 3 in each unit, absorbs the heat of each unit, and the cabinet through the exhaust opening 10. It is released from the upper part of 1.

FIG. 4 is a structural view of the convection guide plate 4, which has a side surface portion 5, a guide portion 6, and a mounting portion 7.

Further, as shown in FIG. 6, the height L9 of the convection guide plate is designed according to the unit having the highest internal temperature among the units to be mounted, and the height of the space in which the convection guide plate is installed is unified. Was.

[0008]

However, in the above-described apparatus of the conventional structure, when a plurality of units are mounted, heat is conducted through a convection induction plate below the units, and the temperature inside each unit varies. I was further,
In order to determine the height of the convection induction plate with reference to the unit having the highest temperature in the unit, rather than the height of the convection induction plate having the necessary capacity to cool the unit,
A convection guide plate with a large height was provided.

As a result, there is a problem that the number of units that can be mounted in the cabinet is limited and mounting efficiency is deteriorated.

The present invention has been made to solve the above-mentioned problems of the prior art, and has as its object to change the height of a convection guide plate in accordance with the amount of heat generated in each unit. A cooling structure and method are provided.

[0011]

In order to solve the above-mentioned problems, in a cabinet cooling structure according to the present invention, an air-cooled cabinet in which a plurality of units are mounted and a convection guide plate is provided between the units is provided. The cooling structure is characterized in that the height of the convection guide plate provided above the unit that generates the largest amount of heat is greater than the height of the convection guide plate provided above the other units.

According to another aspect of the present invention, there is provided a method of cooling a cabinet, comprising the steps of: providing an air-cooled cabinet in which a plurality of units are mounted and a convection guide plate is provided between the units; The height of the convection guide plate provided on the upper part of the large unit was made larger than the height of the convection guide plate provided on the upper part of the other units, the exhaust area of the convection guide plate was maximized, and heat was radiated. It is a cooling method characterized by the above-mentioned.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. In the following description, the same reference numerals are used for the same components.

FIG. 1 is an overall structural view of a cabinet showing a first embodiment of the present invention. In FIG. 1, a cabinet 1 has a bookshelf structure in which units 2A to 2D accommodating a plurality of electronic circuit packages 3 are mounted.

FIG. 2 is a view taken in the direction of the arrow A in FIG. 1 and is a schematic configuration diagram of a cabinet. 2, the heat generation amount of the electronic circuit package 3 housed in the unit 2C is the largest (the heat generation amount of the electronic circuit package 3 is referred to as “unit heat generation amount”). Unit 2B and unit 2A become smaller in this order. A convection guide plate 4A having a height L1 is provided below the unit 2A, a convection guide plate 4B having a height L2 is provided below the unit 2B, and a convection guide plate 4C having a height L3 is provided below the unit 2C. Is provided with a convection guide plate 4D having a height L4. The height of the convection guide plate is set so that L2>L3> L1 in accordance with the amount of heat generated by each of the units 2A to 2D. Arrow 11 in FIG. 2 indicates the flow of air.

Each of the convection guide plates 4A to 4D is defined by a shield plate which is provided in the space between the units so as to be inclined forward and backward, and an intake opening is formed on the lower front side of each unit. , An exhaust opening is formed on the upper rear surface of each unit.

With this structure, the outside air introduced from the intake opening 9 passes between the electronic circuit packages 3 in each unit, absorbs the heat in each unit, and flows out of the cabinet 1 through the exhaust opening 10. Released. Further, since the height of the convection guide plate is set according to the heat value of each unit, the amount of air flowing between the electronic circuit packages 3 in the unit increases as the heat value of the unit increases. Can be uniformly cooled.

The uppermost unit 2A is sufficiently cooled because the area of the exhaust hole 8 provided on the upper surface of the cabinet 1 is large.

FIG. 3 is a schematic structural view of a cabinet showing a second embodiment. Units that generate the same amount of heat
This shows the case where the unit is mounted. In FIG. 3, a convection guide plate 4E having a height L5 is provided below the unit 2E, a convection guide plate 4F having a height L6 is provided below the unit 2F, and a convection guide plate having a height L7 is provided below the unit 2G. 4C, a convection guide plate 4H having a height L8 is provided below the unit 2H. The units 2E, 2F, and 2G are affected by the heat generated by the unit below the unit via the convection guide plate, and the temperature inside the unit rises. When the height of the convection guide plate is constant, the uppermost unit 2E is sufficiently cooled because the area of the exhaust hole 8 on the cabinet is large and the cooling efficiency is good, and the unit 2F immediately below the uppermost unit is in the lower part. Due to heat conduction from the units 2G and 2H through the convection guide plate 4F, the internal temperature becomes highest.

At this time, the height L5 of the convection guide plate 4E is determined so that the area of the exhaust opening 10 of the convection guide plate 4E above the unit 2F is maximized. The height of the convection guide plate that determines the area of the exhaust opening 10 of each of the convection guide plates 4F and 4G of the units 2G and 2H mounted below the unit 2F is the magnitude of the influence of heat from other units. , L5>L6>L7> L8. The larger the amount of air that flows between the electronic circuit packages 3 in the unit, the more the unit that is more affected by the heat generated inside the other unit can uniformly cool the inside of each unit.

[0021]

According to the present invention, the height of the convection guide plate above the unit is changed according to the amount of heat generated by the electronic circuit package housed in the unit, so that the inside of each unit is made uniform. Can be cooled. As a result, the height of the cabinet can be reduced, and the cabinet can be downsized. In addition, when the height of the cabinet is constant, a space for mounting units can be secured, so that in the case of cabinets having the same capacity, the number of units that can be mounted can be increased.

[Brief description of the drawings]

FIG. 1 is an overall structural view of a cabinet, showing a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a first embodiment of the present invention.

FIG. 3 is a schematic configuration diagram showing a second embodiment of the present invention.

FIG. 4 is a diagram illustrating an example of a convection induction plate.

FIG. 5 is an overall structural view of a cabinet showing an example of a conventional apparatus.

FIG. 6 is a schematic configuration diagram illustrating an example of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cabinet 2, 2A-2H ... Unit 3 ... Electronic circuit package 4, 4A-4H ... Convection induction plate 5 ... Side surface part of convection induction plate 6 ... ... Guide portion of convection guide plate 7... Attaching portion of convection guide plate 8... Exhaust hole 9... Intake opening 10... Exhaust opening 11.

Claims (2)

[Claims] 1. An air-cooled cabinet in which a plurality of units are mounted and a convection guide plate is provided between each unit, the height of the convection guide plate provided above the unit having the largest heat generation is set to another value. A cooling structure, wherein the height is greater than the height of the convection guide plate provided above the unit. 2. An air-cooled cabinet in which a plurality of units are mounted and a convection induction plate is provided between each unit, wherein the height of the convection induction plate provided above the unit having the largest heat generation is set to another value. A cooling method comprising forming the convection guide plate provided above the unit to be larger than the height of the convection guide plate, making the exhaust area of the convection guide plate the largest, and dissipating heat.