RU2052912C1 - Radio electron module - Google Patents

Abstract

FIELD: radio electronics. SUBSTANCE: body with partition 7 dividing it into two compartments to house radio elements with different levels of heat release is manufactured in the form of frame 1. Section with hinger heat release has bottom which presents composed field 8 having holes 9 uniformly spaced to attach large-sized elements and to make various combinations (depending on heat release of radio elements) of separable components of heat sinks which are produced in the form of wavy plates and plates with circulation holes. EFFECT: improved operational reliability and stability. 2 cl, 8 dwg

Description

 The invention relates to electronics and can be used in the supporting structures of electronic modules (SEM) of secondary power supply systems (SEC) for all types of equipment operating in conditions of high thermal conditions, and other electronic devices.

 The mechanical structures of the SEM of the first level of disaggregation for the BEP of all types of equipment must satisfy the requirements that ensure the operation of the SEM in conditions of high thermal conditions with or without forced air cooling. They are subject to the requirements of operational mechanical and electrical docking with SEMs of the second level of downsizing.

 The mechanical constructions of SEMs of the first level of disaggregation are known, which are used, as a rule, for BECs containing certain structural elements of effective cooling in both natural and forced air cooling.

 A variant of this design using forced air cooling, (ed. St. USSR USSR N 1292215, class N 05 K 7/20, N 01 L 23/46, 1987) provides for the placement and fixing with the help of volumetric brackets of electronic elements mainly for SVEP in a single closed frame with a front panel and a window on the wall to accommodate the electrical connector. Moreover, the design mainly involves the use of volumetric wiring with manual soldering.

 This design has several disadvantages. Regardless of the level of heat release, the number of heat-generating electro-radioelements (ERE), the mass and heat-generating surface are constant, which worsens the weight and size and cost characteristics when using ERE with a low level of heat release. There is no mechanical separation of elements with different levels of heat, which removes the reliability of the device.

 Closest to the invention in technical essence is the design of the power supply, which is included in the electronic device (ed. St. USSR N 1474874, CL N 05 K 7/20, 1989). The power supply is made of two parts with different heat levels. The device comprises a casing in the form of two sections, one of which is made with ribbing along almost the entire perimeter of the cross section and with an internal through cavity in which heat-loaded elements are installed. The section is detachable to provide access to the electrical installation of heat-loaded elements. An insulating gasket is installed around the perimeter of the mechanical connection of the parts of the indicated section. In another section of the casing, another part of the power supply unit with elements of a low level of heat dissipation is located, in which a window for an output electrical connector is provided and printed circuit boards with elements of a low level of heat dissipation are placed. Wiring between printed circuit boards, heat-loaded elements and the electrical connector is carried out by volumetric wires using manual soldering.

 This design has the following disadvantages. The mass and heat-generating surface, regardless of the level of heat release by the elements and their quantity, are constant, which worsens the weight and size and cost characteristics when using ERE with a low heat release, the places of the fuel elements are strictly defined, which does not allow to obtain universality of structures when placing the ERE. The design is difficult to manufacture: it is required to produce expensive injection molds, which degrades the cost characteristics and manufacturability in general.

 The essence of the invention lies in the fact that the mechanical structure, consisting of two parts with different levels of heat dissipation, is made in the form of a single section-frame with a front panel that cuts off the forced air flow outlet, as part of the mechanical structure of the second level of disaggregation and with a partition separating a single section on the first (bottom) and second compartments, and respectively separating large-sized ERE and ERE with high heat generation from ERE with a low level of heat generation. The bottom of the first compartment of the section-frame is designed as a “stacked field" with a group of holes with a uniform pitch for attaching radiator elements. In this case, the radiator elements, one of which is made in the form of a wave-like plate, and the other in the form of a flat plate with circulation holes, in various combinations for each heat-generating element are installed on the “set-up field" in the required quantity depending on the heat emission of the ERE.

 Due to the fact that in the proposed design ERE with different levels of heat dissipation are located in different compartments, and in the compartment for ERE with a high level of heat dissipation, radiators in the form of various combinations (depending on the level of heat emission of elements) of two types of heat-conducting plates are placed the proposed design allows you to change the area of the fuel surface and to regulate the turbulence of the forced air flow, the output of which is cut off by the front panel. This simplifies the design of the device.

 Figure 1-5 shows a SEM for SVEP proposed mechanical design; in FIG. 6 shows a single section-frame with a partition, a front panel and a “set-up field"; 7 and 8 show two types of radiator elements.

 The mechanical design of the SEM consists of a single section-frame 1, the main printed circuit board 2 for the ERE with a low heat level, an additional printed circuit board 3 for the ERE with a low heat level, radiator elements 4 and 5 located around the active fuel element 6. A single section-frame has a partition 7 that separates the ERE with different levels of heat. Perpendicular to the partition 7 is a "stacked field" 8 (Fig.6), dividing the bottom of the first compartment of a single section frame to accommodate ERE with a high level of heat generation. On the "type-setting field" is a group of holes 9 with a uniform pitch, necessary for mounting elements 4 and 5 of the radiator (Fig.7 and 8) of large-sized radio elements 10.

 The front panel 11 of a single section-frame as part of the mechanical structure of the second level of disaggregation cuts off the air flow to the external environment. A single frame section through the guides 12 provides additional heat transfer to the common housing. In the compartment for accommodating ERE with a low level of heat generation, ventilation windows 13 are provided.

 The layout of the SEM based on the universal mechanical design is as follows.

 On the left side of the section-frame 1 is the main circuit board 2 with ERE with a low level of heat generation. If necessary, in addition to the main board 2, an additional printed circuit board 3 with an ERE of a low heat level can be placed. In the right part of a single section-frame, on the “type-setting field" 8, active heat-generating radio elements 6, large-sized elements 10 are placed. Around the active heat-generating radio elements 6 are placed elements 4 and 5 of radiators. Depending on the heat emission of the active radioelements 6, the radiator plates are installed in various combinations and quantities. As an example, Figures 4 and 5 show variants of quantitative and combinational installation of radiator plates. In this case, the active radio elements 6 are installed on the "type-setting field" 8 through an electrical insulating gasket, which ensures the placement of active radio elements with different electrical potentials on their bodies, and the elements 4 and 5 of the radiators using, for example, high-temperature soldering paste, which provides heat transfer with virtually no losses.

 The entire surface of a single section frame is a radiator of heat into the environment. The movement of the air flow to remove heat from the elements of the radiators and in general from the frame section is as follows.

 Forced air flow coming from the bottom up in the compartment with a high level of heat release, passes in the cavities between the plates of the radiator elements and carries out heat removal from them. At the same time, due to the wavy surface of some radiator plates and circulation holes on other plates of radiators, the air flow becomes turbulent, which increases heat removal. In the compartment for ERE with a low level of heat release through the ventilation windows 13, air passes between the boards. At the same time, the single frame section itself transfers heat through its surface to the air flow and, through conductive coatings through mechanical contact (via guides 12) with the mechanical structure of the second level of downscaling, transfers heat to the general equipment casing, the outer surface of which is always a heat radiator to the environment , which also increases the heat removal.

 The proposed mechanical design in comparison with the prototype has a variable mass and area of active radioelements, which improves the overall dimensions of the device; It has the versatility of layout of active fuel elements of radio elements and large-sized elements without mechanical processing, which improves manufacturability and cost characteristics of the structure, provides access to elements and electrical installation, which is carried out without mechanical disassembly, which improves maintainability; It has radiator elements with special surfaces that are attached to a single radiator frame, for example, using high-temperature soldering, which ensures increased heat removal to the environment during forced airflow.

Claims (2)

 1. A RADIOELECTRONIC MODULE containing electro-radio elements with different levels of heat release, a housing with a partition separating it into two compartments, in one of which there are electro-radio elements with a high level of heat emission, and in the other - radio-electronic elements with a lower level of heat emission, and radiators located on the compartment with radioactive elements with a high level of heat dissipation from its outer side, characterized in that the housing with a partition and compartments is made as a single frame with a bottom in the compartment for placement of electrorad elements with a high level of heat generation, in which uniformly distributed openings are made to form a stacked field for radiators, radiators are made with removable nodes and fixed to said stacked field openings.  2. The module according to claim 1, characterized in that the removable nodes of the radiators are made in the form of wave-shaped plates of heat-conducting material and flat plates with holes with U-shaped protrusions, and these U-shaped protrusions are installed in the holes of the set-up field and sealed in them .

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