RU101890U1 - RADIO ELECTRONIC UNIT - Google Patents

Abstract

 A radio-electronic unit with a heat-generating element located therein, comprising a housing cooling system including an inlet through which air enters from the inside of the enclosure, an outlet through which air exits from the enclosure, a radiator that is partially located inside the enclosure adjacent to the inlet, characterized the fact that the radiator is made with two heat-dissipating fins, one of which is the outer wall of the housing, and the other is located inside the housing, while the cooling system the whisker, formed by the inner surfaces of the left and right side walls, the inner surface of the rear wall, the radiator rib, which is the front wall, the upper and lower covers of the case, is divided by the heat-dissipating radiator rib into the left and right channels, inside each of which the cooling air is divided into streams, moreover, the most heat-generating elements of the modules have individual radiators in contact with the air flow or with the main radiator, the screens of the shielded module partially or completely in They are made of mesh, and small-sized fuel elements are combined into a microblock filled with a heat-conducting compound.

Description

The utility model relates to the field of radio equipment and can be used in the design of cases of electronic equipment.

The housing of the radio-electronic unit is known from the prior art (Author's certificate No. 1725414, published on 04/07/1992, IPC: Н05К 5/00), made in the form of the upper and lower sections of the box-shaped, interconnected on a diagonal plane. The bases of the sections and panels are equipped with shelves placed at an angle to them. The shelves are located one above the other and are connected detachably. The mating side walls are equipped with curly flanges of a U-shape. To remove heat in the side walls of the upper section, blinds are made.

The disadvantage of this device is the insufficiently effective heat removal from the radioelements and the device body.

A device for removing heat (Patent RU No. 2258181, published 04.09.2003, IPC: F24H 3/06, H05K 7/20) is known, including an electric motor, an axial fan, a radiator with fins and an additional axial fan located on an elongated axis under axial fan and fairing.

The disadvantage of this device is the local heat removal from a heated element, in particular, from a microprocessor.

The closest in technical essence and the achieved results to the proposed technical solution is a system for cooling the housing, with heat-generating elements located therein (application for invention No. 2001113266, published June 10, 2003, IPC: N05K 7/20). The cooling system of the housing, in which the heat-generating element is located, has an inlet through which air enters from the outside of the housing, an outlet through which air exits from the housing to the outside, a radiator with a heat-dissipating fin that is partially or entirely located inside the housing near the inlet hole. In this case, the air that enters the housing through the inlet first passes through the heat-dissipating fin of the radiator, taking heat from it, which is released by the working heat-generating element, and then, after heating in the radiator, is released through the outlet from the housing to the outside, cooling case itself.

The disadvantages of this device include the insufficiently efficient heat removal from the radioelements and the device body.

The technical result, the claimed technical solution is aimed at, is to ensure efficient heat removal from the fuel elements with the most dense layout in the housing of electronic equipment.

The technical result is achieved in that the radio-electronic unit with a heat-generating element located therein, comprises a housing cooling system including an inlet through which air enters from the outside of the housing, an outlet through which air from the housing exits, a radiator which is partially located inside the housing nearby with inlet. Moreover, the radiator is made with two heat-scattering fins, one of which is the outer wall of the housing, and the other is located inside the housing. In this case, the cooling system of the case, formed by the inner surfaces of the left and right side walls, the inner surface of the rear wall, the radiator rib, which is the front wall, as well as the upper and lower covers of the case, is divided by the heat-dissipating radiator rib into the left and right channels, inside each of which cooling air is divided into streams, and the most heat-generating elements of the modules have individual radiators in contact with the air flow or with the main radiator, screens This module is partially or completely mesh-made, and small-sized fuel elements are combined into a microblock filled with a heat-conducting compound.

The invention is illustrated by drawings, where:

Figure 1 - General view of the block of electronic;

Figure 2 is a left view of Figure 1;

Figure 3 - view a in figure 1;

Figure 4 is a right view in figure 1;

Figure 5 is a view In figure 1;

6 is a section B - B in figure 1.

The electronic block contains a housing 1 (Fig.1-6) with placed in it. one or more heat-generating elements, which can be made, for example, in the form of printed circuit boards with installed emitting heat radio-electronic elements and forming electronic modules 2, 3, 4, 5.

The electronic block contains a cooling system of the housing 1, including an inlet 6, a radiator 7, with heat dissipating ribs 8, 9, partially or entirely located inside the housing, next to the inlet 6, and also the outlet openings 10, 11 (Figure 1, 2 , four).

The cooling system of the housing 1 of the electronic block is formed by the inner surfaces of the left and right side walls 12, 13, the inner surface of the rear wall 14, ribs 8, 9 of the radiator 7, while the rib 9 is the front wall of the housing 1 (Figure 1), as well as the upper 15 and the bottom 16 covers and outlet openings 10, 11 (FIGS. 2, 4). The cooling system of the housing 1 is made with forced air circulation inside the housing 1 of the electronic unit, for example, by installing an electric fan 17 (Fig.1, 3) in the inlet 6.

The left and right side walls 12, 13 with fins 8, 9 of the radiator 7 and the outlet openings 10, 11 form the left and right channels (Figs. 1, 2, 4).

The inlet 6 is located in the rear wall 14 (Fig. 1), and the outlet openings 10, 11 (Figs. 2, 4) are located in the front peripheral part of the left and right side walls 12, 13 (Figs. 1, 2, 4) parallel to the fin 8 of the radiator 7.

The radiator 7 is made with two heat dissipating fins 8, 9, one of which 9 is the outer wall of the housing 1, and the other 8 is perpendicular to the first and is entirely located inside the housing 1 (Figure 1).

Electronic modules 2, 3, 4, 5 are fixed on the fin 8 of the radiator 7 parallel to the fin, with gaps of a certain size between themselves and the surfaces of the fin 8 (Figure 1).

Electronic modules 2, 4 with fuel elements 18, 19 (Fig. 5, 6) located on printed circuit boards have additional individual radiators 20, 21 (Fig. 5, 6) in contact with the air stream or with fin 8 of the radiator 7 and placed closer to the inlet 6. Radiator 20 (Figs. 1, 2, 5) in contact with the air flow, is made, for example, one-sided, needle-pin, and the radiator 21 is made double-sided flat (Fig.6).

The printed circuit boards of the electronic modules 2, 3 have different lengths and are mounted with an offset relative to each other, providing air outlet to the outlet openings 10 (FIGS. 1, 2).

Small-sized fuel elements 23 (Figure 2) for optimizing the layout and heat sink are placed, for example, in a frame 24 made of heat-conducting material mounted on the printed circuit board of the electronic module 3, and are filled with a heat-conducting compound 25 that functions as a common radiator with a large cooling surface.

To ensure heat dissipation from the fuel elements 26 (Fig. 1) in the shielded electronic module 5, the screen 27 (Fig. 1) is rigidly fixed to the surface of the fins 8, 9 of the radiator 7 and partially or completely made of mesh 28 with certain cell sizes (Fig. four). While the mesh surface of the screen is maximally located in the area of the outlet holes 11 of the right side wall 13 (Figs. 1, 4) of the housing 1.

The outlet holes 10, 11 of the left and right side walls 12, 13 (Figs. 2, 4) are combined into three groups with vertical uniform and symmetrical placement, with the creation of rectangular holes with rounded ends, horizontally located, which allows the formation of horizontal channels for passage of the cooling air flow and uniform heat dissipation.

The heat removal in the electronic block (Figure 1) from the fuel elements and in general from the housing is as follows.

Through the inlet 6 located on the rear wall 14 (FIG. 1) of the housing 1, air under pressure created, for example, by an electric fan 17 (FIG. 3), enters the cooling system of the housing 1 of the electronic unit, formed by the inner surfaces of the left 12 and right 13 of the side walls, the inner surface of the rear wall 14, the rib 8 of the radiator 7, which is the front wall, the upper 15 and lower 16 (Fig.1, 2) covers.

Cooling the fin 8 of the radiator 7, the air is distributed into two flows and enters the left and right channels formed by the left 12 and right 13 side walls (Fig. 1), fin 8 of the radiator 7, outlet openings 10, 11, upper 15, and lower 16 lids (Fig.2, 4).

In the left channel, the air (Figure 1) is divided into three streams formed by the gaps of the electronic modules 2, 3 with the fin 8 of the radiator 7 and the left side wall 12.

The first cooling air flow of the left channel passes into the gap between the electronic module 3 and the fin 8 of the radiator 7, cooling the printed circuit board with the fuel elements of the module. The free exit of the cooling air flow into the external environment is through a gap provided by the shift of the electronic module 3 relative to module 2.

The second cooling air flow of the left channel passes into the gap between the electronic modules 2 and 3, cooling the printed circuit boards with the fuel elements of the modules, as well as in the frame 24, and enters the external environment through the outlet openings 10 (Figs. 1, 2).

The third cooling air flow of the left channel passes into the gap between the electronic module 2 and the side wall 12, cooling the printed circuit board with heat-generating elements, as well as the radiator 20 mounted on the most heat-generating elements 18 (Figs. 1, 2, 5), and goes into the external Wednesday through the outlet 10.

All three air flows of the left channel also cool the inner surface of the fins 9 of the radiator 7, which is the front wall of the housing 1, which is cooled by additional circulating external air flows.

In the right channel, the air is also divided into three streams formed by the gaps of the electronic modules 4, 5 with the rib 8 of the radiator 7 and the left side wall 13 (Figure 1).

The first cooling air stream of the right channel passes into the gap between the electronic module 4 and the fin 8 of the radiator 7. This cooling air stream cools the printed circuit board of the electronic module 4 with the fuel elements of the module, the fin 8 of the radiator, and the radiator 21, with the most heat elements installed on it 19 of the electronic module (Figs. 1, 4, 6), cooling the walls of the shielded module 5, made in the form of a screen 27, and enters the external environment through the outlet holes 11 in the right side wall 13.

The second cooling air flow of the right channel passes into the gap between the printed circuit boards of the electronic module 4, cooling the printed circuit boards with the fuel elements of the module, the radiator 21, and the walls of the module 5, made in the form of a screen 27, and through the outlet holes 11 of the right side wall 13 external environment (Fig.1, 4, 6).

The third cooling air flow of the right channel passes into the gap between the electronic module 4, 5 and the side wall 13, cooling the top printed circuit board of the module 4 with fuel elements and the wall of the module 5 in the form of a screen 27 and through the outlet openings 11 of the right side wall 13 enters the external environment (Figs. 1, 4, 6).

One of the walls 28 of the shielded module 5, facing the outlet holes 11, is made mesh, which provides heat removal from the volume of the shielded module.

The cooling air flow from the electric fan 17 (Figure 3) also passes between the electronic modules 2, 3, 4, 5, the top 15 and the bottom 16 covers (Figure 2, 4), cooling the latter also performing the functions of radiators since they are partially placed and fixed .on the radiator 7.

Thus, the claimed technical solution allows for efficient heat removal from the fuel elements with the most dense layout in the housing of electronic equipment.

Claims (1)

A radio-electronic unit with a heat-generating element located therein, comprising a housing cooling system including an inlet through which air enters from the inside of the enclosure, an outlet through which air exits from the enclosure, a radiator that is partially located inside the enclosure adjacent to the inlet, characterized the fact that the radiator is made with two heat-dissipating fins, one of which is the outer wall of the housing, and the other is located inside the housing, while the cooling system the whisker, formed by the inner surfaces of the left and right side walls, the inner surface of the rear wall, the radiator rib, which is the front wall, the upper and lower covers of the case, is divided by the heat-dissipating radiator rib into the left and right channels, inside each of which the cooling air is divided into streams, moreover, the most heat-generating elements of the modules have individual radiators in contact with the air flow or with the main radiator, the screens of the shielded module partially or completely in They are made of mesh, and small-sized fuel elements are combined into a microblock filled with a heat-conducting compound.