RU80648U1 - RADIATOR UNIT (OPTIONS) - Google Patents

Abstract

The radiator block (1) contains one or two heat-conducting panels (2) on the external sides of which the components of the electric circuit are placed, and between the opposite sides at least one first radiator (3) is pressed in by the heat-absorbing part (5) into the hole (4) of the heat-conducting panel (2). One or more second radiators (17) of a U-shaped or L-shaped shape is also fixed on one or two heat-conducting panels (2). The first radiator (3) contains many individual radiator plates (6), fastened through heat-conducting gaskets (9). 2 n.p., 42 c.p., 23 ill.

Description

The invention relates to devices for removing heat from electronic structural elements of electronic equipment.

Known radiator unit (see application US No. 20070297140, IPC Н05К 7/20, published December 27, 2007) containing a heat-conducting panel for placing components of an electric circuit on one side and a radiator located on the opposite side of the heat-conducting panel and containing a heat-absorbing base in the form a metal plate on one side of which parallel slots are made in which radiator plates are fixed.

A disadvantage of the known radiator unit is a rather complex and laborious technology for its manufacture.

A known radiator block (see application US No. 20070284079, IPC Н05К 7/20, published December 13, 2007), comprising a heat-conducting panel for placing electrical circuit components on one side of it and a radiator located on the opposite side of the heat-conducting panel, containing a heat-absorbing base with parallel lamellar ribs. The heat-absorbing base is attached to the heat-conducting panel using the corners, tightened with bolts and nuts.

A disadvantage of the known radiator is a rather complicated and laborious technology for its manufacture.

The closest in technical essence and combination of essential features to the claimed technical solution is the radiator unit adopted for the prototype (see application US No. 20070230138, IPC N05K 7/20, published 04.10.2007), including a heat-conducting panel for placing electrical components on one side of it chains, several radiators located on the other side of the heat-conducting panel under the installation sites of the heat-generating components of the electric circuit and containing many rectangular radiator plates attached eposredstvenno to the heat-conducting panel. In the case of making aluminum radiator plates by extrusion, radiator plates and a heat-conducting panel are made as a single part, and then the necessary configuration of radiators is milled. However, in some cases, the use of aluminum as a plate material does not provide the required heat sink. When using copper, they are made separately

radiator plates and a heat-conducting panel, then the plates are individually attached to the panel.

This design embodiment significantly complicates the manufacturing technology of the radiator unit and reduces the reliability of the radiator. In addition, the well-known radiator block prototype has limited possibilities for increasing the heat transfer efficiency due to the use of copper as a material with an increased coefficient of heat conductivity, since a heat-conducting panel is used between the heat-generating elements and the scattering part of the radiator - fin plates, and, therefore, an additional transitional thermal resistance at their junctions.

The task that the claimed technical solution solves was the development of such a radiator block, in which a simple and reliable fastening of the radiator plates and effective heat removal from the components of the electric circuit are ensured.

The problem is solved by a group of utility models, united by a single inventive concept.

According to the first embodiment, the problem is solved in that the radiator unit includes a heat-conducting panel for placing on one side of the electric circuit components, one or more first radiators that are located on the opposite side of the heat-conducting panel. Each radiator of the block contains many separate radiator plates having at least two parallel edges and fastened near these edges through heat-conducting gaskets to each other with the formation of a heat-absorbing part and a heat-distributing part, which is the opposite heat-absorbing part, respectively. In the heat-conducting panel under the installation site of the heat-generating component of the electric circuit, at least one hole is made in the shape of the contour of the heat-absorbing part, into which the heat-absorbing part of the first radiator is pressed in from the side opposite to the heat-generating component.

Such a fitting of the heat-absorbing part of the first radiator into the heat-conducting panel ensures their reliable connection, which withstands the most severe operating conditions. The combination of sections of the radiator plates opposite the heat-absorbing part in the heat distribution part allows you to combine the radiator plates

(which are directly involved in forced convective heat transfer) into a single heat circuit.

One or several first radiators can be fixed on a heat-conducting panel, for example, solder or heat-conducting adhesive, as well as riveting one or more second U-shaped or L-shaped radiators in places of less intense heat generation.

The radiator plates and gaskets of the at least one first radiator may be bonded to each other, for example, solder or heat-conducting adhesive.

In the radiator block, the parallel edges of the radiator plates and adjacent heat-conducting gaskets of at least one first radiator can be made of the same length.

The heat-conducting pads of the at least one first radiator may be bonded to rectangular opposing protrusions of the radiator plates. In this case, the heat-conducting gaskets are installed flush with the outer edges of the rectangular opposing protrusions, and the radiator plates are longer than the length of the adjacent heat-conducting gaskets, and the thickness of the heat-conducting gaskets is at least part of their length greater than the height of the rectangular protrusions of the radiator plates. Radiator plates can protrude on one side of the ends of the heat-conducting gaskets or on both sides, both symmetrically and asymmetrically. This makes it possible to increase the heat exchange efficiency of the structure by reducing the resistance to air flow at the inlet and outlet of the air channel formed by the sum of the gaps between the radiator plates, and also by ensuring turbulence of the air flow only over a limited length of the channel - directly under the fuel elements.

In the radiator block, the sections of the radiator plates protruding beyond the ends of the heat-conducting gaskets of the at least one first radiator may have, for example, rounded or pointed edges.

Radiator plates of at least one first radiator can be formed in at least two groups made of metals with different thermal conductivities. At least one group of radiator plates can be made, for example, of copper, and at least one group of radiator plates can be made, for example, of aluminum.

The radiator plates of at least one first radiator in the radiator block can be formed in at least two groups made of radiator plates of different thicknesses, and the heat-conducting gaskets of at least one first radiator can be made of metals with different thermal conductivities.

The greatest efficiency of the thermal circuit (and, consequently, heat transfer of the radiator) is achieved using a combination of materials with different thermal conductivities, from which radiator plates and heat-conducting gaskets are made. For example, copper radiator plates mounted directly under the heat-generating element on the opposite side of it, in combination with copper heat-conducting gaskets, are, as it were, a second heat source, from which thermal energy is distributed on both sides by heat transfer. Thus, on the opposite side from the heat-absorbing part of the radiator, redistribution of thermal energy from warmer radiator plates to less heated occurs. And if it is already impossible to change the material of the radiator plates in a specific radiator, then by a combination of various gasket materials in the heat distribution part, various specified tactical and technical characteristics (Heat transfer efficiency or thermal resistance, mass, cost) of the radiator can be achieved.

According to the second embodiment, the problem is solved in that the radiator unit includes two opposite heat-conducting panels for placing components of electrical circuits on their outer sides and at least one first radiator located between the heat-conducting panels and containing a plurality of separate radiator plates having at least two parallel edges and fastened close to these edges through heat-conducting gaskets to each other with the formation of two opposite heat-absorbing parts. In the heat-conducting panels under the installation site of the opposing heat-generating components of the electric circuits, at least one hole is made that repeats the shape of the contour of the corresponding heat-absorbing part into which the heat-absorbing parts of the first radiator are pressed.

One or several first radiators can be fixed on a heat-conducting panel, for example, solder or heat-conducting adhesive, as well as one or more second rivets

U-shaped or L-shaped radiators in places of less intense heat generation.

The radiator plates and gaskets of the at least one first radiator may be bonded to each other, for example, solder or heat-conducting adhesive.

In the radiator block, the parallel edges of the radiator plates and adjacent heat-conducting gaskets of at least one first radiator can be made of the same length.

The heat-conducting pads of the at least one first radiator may be bonded to rectangular opposing protrusions of the radiator plates. In this case, the heat-conducting gaskets are installed flush with the outer edges of the rectangular opposing protrusions, and the radiator plates are longer than the length of the adjacent heat-conducting gaskets, and the thickness of the heat-conducting gaskets is at least part of their length greater than the height of the rectangular protrusions of the radiator plates. Radiator plates can protrude on one side of the ends of the heat-conducting gaskets towards the air flow generated by the fan, or on both sides, both symmetrically and asymmetrically.

In the radiator block, the sections of the radiator plates protruding beyond the ends of the heat-conducting gaskets of the at least one first radiator may have, for example, rounded or pointed edges.

Radiator plates of at least one first radiator can be formed in at least two groups made of metals with different thermal conductivities. At least one group of radiator plates can be made, for example, of copper, and at least one group of radiator plates can be made, for example, of aluminum.

The radiator plates of at least one first radiator in the radiator block can be formed in at least two groups made of radiator plates of different thicknesses, and the heat-conducting gaskets of at least one first radiator can be made of metals with different thermal conductivities.

The second embodiment of the radiator unit allows you to compactly place the electrical components on two opposite heat-conducting panels, providing cooling by radiators, pressed with their heat-absorbing parts in opposite

panels with lateral forced airflow using a fan. The location of the heat-generating electro-radio elements on both sides of the radiators provides a more uniform heating of the radiator plates, which is equivalent to an increase in the effective area of the fins of the radiators, and, consequently, the efficiency of their heat transfer

The inventive utility model is illustrated by drawings, where:

figure 1 shows in perspective the first variant of the inventive radiator unit with two first radiators;

figure 2 shows a perspective view of a heat-conducting panel;

figure 3 shows in perspective the first radiator of the block with three groups of the first variant of the radiator plates of different thicknesses;

figure 4 shows in a perspective view the first radiator of the block with three groups of the first variant of the radiator plates of different materials;

figure 5 shows a top view of the first radiator unit with a second embodiment of the radiator plates;

figure 6 shows a side view of the first radiator shown in figure 5;

Fig. 7 shows a side view of a first radiator of a block with a third embodiment of radiator plates;

Fig. 8 is a side view of a first radiator of a block with a fourth embodiment of radiator plates;

figure 9 shows a side view in longitudinal section along AA on the first version of the radiator unit with the first and second radiators;

figure 10 shows a bottom view of the radiator block shown in figure 9;

figure 11 shows a side view in longitudinal section of one of the embodiments of the second embodiment of the radiator unit;

on Fig shows a side view in longitudinal section to another embodiment of a second embodiment of a radiator unit;

on Fig shows a perspective view of a second radiator unit in cross section;

on Fig shows a side view of the second radiator of a U-shaped;

on Fig shows a front view in cross section on a second radiator of a U-shaped;

on Fig shows a perspective view of a second U-shaped radiator;

on Fig shows a side view of a second radiator L-shaped;

Fig. 18 is a front cross-sectional view of a second L-shaped radiator;

on Fig shows a side view of a second radiator of a U-shaped with rounded edges;

in Fig.20 shows a front view of the second radiator shown in Fig.19;

in Fig.21 shows a top view of the second radiator shown in Fig.19;

on Fig shows a top view of the first radiator with a hexagonal in terms of heat-absorbing part;

in Fig.23 shows a side view of the first radiator shown in Fig.22.

The first embodiment of the radiator unit 1 (see FIG. 1) contains a heat-conducting panel 2 for placing components of an electric circuit (not shown) on one side thereof, first radiators 3 located on the opposite side of the heat-conducting panel 2. In the heat-conducting panel 2 (see Fig. 2) under the installation site of the heat-generating components of the electric circuit, holes 4 are made in which, from the side opposite the heat-generating component, the heat-absorbing part 5 of the first radiator 3 is pressed in, since the hole 4 is the shape of the contour of the heat-absorbing part 5. The first radiator 3 (see Fig. 3) contains many separate radiator plates 6 having at least two parallel edges 7, 8 and fastened near these edges 7, 8 through heat-conducting gaskets 9 with each other to form respectively heat-absorbing part 5 and heat-distributing part 10, opposite heat-absorbing part 5. Radiator plates 6 and gaskets 9 can be pre-bonded to each other by various known methods, for example, by soldering or gluing heat pipes adhesive glue. Parallel edges 7, 8 of the radiator plates 6 and the adjacent sides of the gaskets 9 (see figure 3, figure 4) can have the same length. The heat-absorbing part 5 in the plan may have, for example, the shape of a rectangle (see FIG. 3), a square (see FIG. 4), a hexagon (see FIG. 22, FIG. 23), a circle and another necessary for efficient heat removal forms. The length of the radiator plates 6 may be greater than the length of the adjacent sides of the gaskets 5 (see Fig. 5, Fig. 6, Fig. 7, Fig. 8). Radiator plates 6 can protrude on one side of the ends of the heat-conducting gaskets 9 towards the flow of air generated

a fan (see Fig. 8). Radiator plates 6 can protrude both symmetrically on both sides of the ends of the heat-conducting gaskets 9 (see FIG. 5, FIG. 6) and asymmetrically on both sides of the ends of the heat-conducting gaskets 9 (see FIG. 7). In this embodiment, the minimum aerodynamic resistance to air flow is achieved due to the fact that the radiator plates 6 protruding beyond the heat-conducting gaskets 9 (i.e., the heat-absorbing part) form an air channel (which is a set of elementary channels formed by a plurality of radiator plates 6) whose cross section is always larger than the cross section of the channel directly below the heat-absorbing part 5 of the first radiator 3. Due to this, the air flow rate at the inlet and outlet of the first radiator pa 3 is always less than the velocity inside the air passage, and hence of minimum loss. The narrowing of the air occurs under the heat-absorbing part 5 of the first radiator 3 when the air flow moves in steady state (when the thickness and number of radiator plates 6 does not affect its speed). Therefore, disturbances (turbulence) of the air flow in the zone of the heat-absorbing part 5 lead to a significant increase in the efficiency of heat transfer with a minimum increase in aerodynamic resistance to air flow. Radiator plates 6 forming a plurality of elementary channels may have different thicknesses (see FIG. 3, FIG. 22). Groups I and III of thick plates 6 are located at least along the edges and provide mechanical strength of the first radiator 3, acting as a supporting structure. Group II of thin plates 6 causes minimal disturbance (turbulence) when they are bent by the air flow at the inlet and outlet of the first radiator 3. The sections 11 of the radiator plates 6 protruding beyond the ends of the gaskets 9 can have straight edges 12 (see Fig. 6), rounded edges 13 (see Fig. 7, Fig. 8) and pointed edges 14 (see. Fig. 9). (see Fig. 7) The heat-conducting gaskets 9 can be fastened with rectangular protrusions 15 (see Fig. 6, Fig. 7, Fig. 8) of the radiator plates 6. In this case, the heat-conducting gaskets 9 are mounted flush with the outer edges of the rectangular opposing protrusions 15, and the thickness of the heat-conducting gaskets 9 along their entire length or part of their length is greater than the height of the rectangular protrusions 15 of the radiator plates 6, thereby forming protrusions 16 facing each other, which turbulent the air flow. Radiator plates 6 can be formed in several groups, for example, in three groups IV, V and VI (see figure 4) made of

metals with different thermal conductivity, for example, groups IV and VI of the radiator plates 6 are made of aluminum, and group V of the radiator plates 6 located above the heat source is made of copper. The heat-conducting gaskets 9 in the first radiator 3 can also be made of metals with different heat conductivity and different widths (see Fig. 22, Fig. 23). Without changing the geometric dimensions of the first radiator 3, using thinner radiator plates 6 depending on the task, you can either increase the number of plates 6 (heat transfer area) or increase the gap between them, thereby increasing the effective cross section of the elementary air channel (the space between adjacent radiator plates 6). The first embodiment of the radiator unit 1 may contain (see Fig. 9, Fig. 10), both the first radiators 3, which are installed under the radio components with the highest heat emission, and one or more second U-shaped radiators 17 (see Fig. 14, Fig. 15, Fig. 16) and / or L-shaped (see Fig. 17, Fig. 18), which remove heat from places of less intense heat generation. Radiators 17 are fixed on the heat-conducting panel 2, for example, with solder or heat-conducting adhesive, and, for strength, also with rivet 18. The second radiators 17 can have rounded edges (see Fig. 19, Fig. 20, Fig. 21), which facilitates them manufacturing flexible from a plate. The second U-shaped radiator 17 comprises two radiator plates 19 connected by a base 20. A through hole 21 for rivet 18 is made in the base 20. The second L-shaped radiator 17 (see Fig. 18, Fig. 19, Fig. 20) contains one radiator plate 19 connected to the shortened base 22. At the base 22, there is also a through hole 21 for rivet 18. The second variant of the radiator block 1 (see Fig. 11, Fig. 12, Fig. 13) contains two opposite heat-conducting panels 2 for placing on their external sides two sets of electric components Sgiach circuits (not shown). Holes 4 are made in the panels, repeating the shape of the contours of the corresponding heat-absorbing parts 5. Between the panels 2, the first radiators 3 are installed. The first radiators 3 have the same structural design as the first radiators in the first embodiment of the radiator block, but their heat-distributing part 10 is replaced by a second heat-absorbing part 5. The first heat-absorbing part 5 of each first radiator 3 is pressed into the hole 4 of the first heat-conducting panel 2, and the second heat-absorbing part 5 is pressed into the opposite opening s 4 second thermally conductive panel 2. In accordance with

the configuration of the electrical circuits on one or two heat-conducting panels 2 install in the places of heat generation the second radiators 17 U-shaped (see Fig. 14, Fig. 15, Fig. 16) and / or L-shaped.

The inventive utility model was used for the final stages of power amplifiers for television transmitters with a power of 600 W in analog broadcast format with double symmetric heat-conducting panels and 200 W in digital broadcasting format with one heat-conducting panel. The total thermal dissipation power in the power amplifier (4 powerful BLF field effect transistors - 878 and 2 ballast ceramic resistors) is 1000 watts.

Claims (44)

1. A radiator unit comprising a heat-conducting panel for accommodating electrical circuit components on one side thereof, at least one first radiator located on the opposite side of the heat-conducting panel and comprising a plurality of individual radiator plates having at least two parallel edges and bonded close to these edges through heat-conducting gaskets with each other with the formation of a heat-absorbing part and a heat-distributing part, respectively, the opposite heat-absorbing part, while a thermally conductive bar under a place installing the fuel component of the electric circuit formed at least one opening shaped heat absorption part of the circuit, in which on the side opposite the heat-emitting component, is pressed into the heat absorption side of the first radiator. 2. The radiator block according to claim 1, characterized in that at least one first radiator is mounted on a heat-conducting panel at least one second radiator. 3. The radiator block according to claim 2, characterized in that at least one second radiator is mounted on a heat-conducting panel with solder. 4. The radiator block according to claim 2, characterized in that at least one second radiator is fixed to the heat-conducting panel with heat-conducting adhesive. 5. The radiator block according to claim 2, characterized in that at least one second radiator is mounted on the heat-conducting panel by means of a rivet. 6. The radiator unit according to claim 2, characterized in that at least one second radiator is U-shaped. 7. The radiator unit according to claim 2, characterized in that at least one second radiator is L-shaped. 8. The radiator unit according to claim 1, characterized in that the radiator plates and said gaskets of at least one first radiator are fastened to each other by solder. 9. The radiator unit according to claim 1, characterized in that the radiator plates and said gaskets of at least one first radiator are bonded to each other with heat-conducting adhesive. 10. The radiator block according to claim 1, characterized in that the parallel edges of the radiator plates and the adjacent sides of the heat-conducting gaskets of at least one first radiator are made of the same length. 11. The radiator unit according to claim 1, characterized in that the heat-conducting gaskets are fastened to the rectangular opposing protrusions of the radiator plates of at least one first radiator, while the heat-conducting gaskets are installed flush with the outer edges of the rectangular opposing protrusions, and the length of the radiator plates is greater than the length adjacent to thermal conductive pads. 12. The radiator block according to claim 11, characterized in that the thickness of the heat-conducting gaskets is at least a portion of their length greater than the height of said rectangular protrusions. 13. The radiator unit according to claim 11, characterized in that the radiator plates of at least one first radiator protrude on one side of the ends of the heat-conducting gaskets. 14. The radiator unit according to claim 11, characterized in that the radiator plates of at least one first radiator protrude from the sides of the ends of the heat-conducting gaskets. 15. The radiator unit according to 14, characterized in that the radiator plates of at least one first radiator protrude symmetrically on both sides of the ends of the heat-conducting gaskets. 16. The radiator block according to 14, characterized in that the radiator plates of at least one first radiator protrude asymmetrically from two sides beyond the ends of the heat-conducting gaskets. 17. The radiator block according to claim 11, characterized in that the sections of the radiator plates protruding beyond the ends of the heat-conducting gaskets of at least one first radiator have rounded edges. 18. The radiator block according to claim 11, characterized in that the sections of the radiator plates protruding beyond the ends of the heat-conducting gaskets of the at least one first radiator have pointed edges. 19. The radiator block according to claim 1, characterized in that the radiator plates of at least one first radiator are formed in at least two groups made of metals with different thermal conductivity. 20. The radiator block according to claim 19, characterized in that at least one group of radiator plates is made of copper and at least one group of radiator plates is made of aluminum. 21. The radiator unit according to claim 1, characterized in that the radiator plates of at least one first radiator are formed in at least two groups made of radiator plates of different thicknesses. 22. The radiator block according to claim 1, characterized in that the heat-conducting gaskets of at least one first radiator are made of metals with different thermal conductivity. 23. Radiator block, including two opposite heat-conducting panels for placement on their outer sides of the components of the electrical circuits, at least one first radiator located between the heat-conducting panels and containing many individual radiator plates having at least two parallel edges and fastened close to these edges through heat-conducting gaskets with each other with the formation of two opposite heat-absorbing parts, while in heat-conducting panels under the installation site aschih heat generating components of electric circuits provided with at least one hole shaped contour corresponding heat-absorbing portion, in which the pressed portion of the first heat absorbing radiator. 24. The radiator unit according to item 23, wherein the at least one first radiator is attached to at least one second heat sink panel at least one second radiator. 25. The radiator unit according to paragraph 24, wherein the at least one second radiator is mounted on a heat-conducting panel with solder. 26. The radiator unit according to paragraph 24, wherein the at least one second radiator is mounted on a heat-conducting panel with heat-conducting adhesive. 27. The radiator unit according to paragraph 24, wherein the at least one second radiator is mounted on the heat-conducting panel by riveting. 28. The radiator unit according to paragraph 24, wherein the at least one second radiator is U-shaped. 29. The radiator unit according to paragraph 24, wherein the at least one second radiator is L-shaped. 30. The radiator unit according to item 23, wherein the radiator plates and said gaskets of at least one first radiator are fastened to each other by solder. 31. The radiator unit according to item 23, wherein the radiator plates and said gaskets of at least one first radiator are bonded to each other with heat-conducting adhesive. 32. The radiator unit according to item 23, wherein the parallel edges of the radiator plates and the adjacent sides of the heat-conducting gaskets of at least one first radiator are made of the same length. 33. The radiator block according to item 23, wherein the heat-conducting gaskets are bonded to the rectangular opposing protrusions of the radiator plates of at least one first radiator, while the heat-conducting gaskets are mounted flush with the outer edges of the rectangular opposing protrusions, and the length of the radiator plates of the first radiator is greater than the length adjoining heat-conducting gaskets. 34. The radiator block according to claim 33, wherein the thickness of the heat-conducting gaskets is at least a portion of their length greater than the height of said rectangular projections. 35. The radiator unit according to claim 33, wherein the radiator plates of at least one first radiator protrude on one side of the ends of the heat-conducting gaskets. 36. The radiator unit according to claim 33, wherein the radiator plates of at least one first radiator protrude on both sides of the ends of the heat-conducting gaskets. 37. The radiator unit according to clause 36, wherein the radiator plates of at least one first radiator protrude symmetrically on both sides of the ends of the heat-conducting gaskets. 38. The radiator unit according to clause 36, wherein the radiator plates of at least one first radiator protrude asymmetrically from both sides of the ends of the heat-conducting gaskets. 39. The radiator unit according to claim 33, wherein the portions of the radiator plates protruding beyond the ends of the heat-conducting gaskets of the at least one first radiator have rounded edges. 40. The radiator block according to claim 33, characterized in that the sections of the radiator plates protruding beyond the ends of the heat-conducting gaskets of the at least one first radiator have pointed edges. 41. The radiator block according to item 23, wherein the radiator plates of at least one first radiator are formed in at least two groups made of metals with different thermal conductivity. 42. The radiator block according to paragraph 41, wherein the at least one group of radiator plates is made of copper, and at least one group of radiator plates is made of aluminum. 43. The radiator unit according to item 23, wherein the radiator plates of at least one first radiator are formed in at least two groups made of radiator plates of different thicknesses. 44. The radiator unit according to item 23, wherein the heat-conducting pads of at least one first radiator are made of metals with different thermal conductivity.