SU1704304A1 - Device for cooling of units of radio electronic equipment - Google Patents

Abstract

The invention relates to radio electronics, in particular, to air cooling systems of electronic equipment. The purpose of the invention — to increase cooling efficiency, expand operational capabilities and simplify the design — is due to the fact that in an open-loop cycle, the outside air passed through the hatch 1 of the air intake for cooling into the chamber 12, then the heated air enters the exhaust duct 10 and goes out through the air outlet holes of the hatch 2, while the flap 5 blocks the inlet side Step 6 of the recirculation duct 7, in an open cycle, the spent creature from the recirculation duct 7 enters the mixing chamber 11, and the chamber 12, then the heated air enters the exhaust duct 10, while the flap 5 completely blocks the air outlet hole, and during operation in a closed cycle, the air intake hatch 1 is not necessary to close, since the amount of air supplied by fan 4 through duct 7. and the amount of air taken in by duct 8 from duct 8 are equal to each other. 1 il. (L

Description

The invention is from radio engineering, in particular, to radial cooling systems - radio electronic equipment (REA).

The purpose of the invention is to increase cooling efficiency, expanding operational capabilities and simplifying the design.

The drawing shows a device for cooling blocks of electronic equipment.

The device contains a hatch of 1 air intake, a hatch of 2 air outlets, a filter 3 for cleaning outside air, a fan 4. a single-blade valve 5 for a similar orb of the recirculation duct

7 and the air inlet port of the hatch 2, the air inlet 8, the air inlet 9, the exhaust air inlet 10. the mixing chamber 11 at the outlet of the recirculation air duct 7 between the inlet air inlet 8 and the air intake filter REA. These elements are located in the housing 13.

When operating in an open cycle, the outside air passes through the air intake hatch 1, filter 3 cleaning the outside air, the mixing chamber 11, the supply air duct 8. the fan 4. the air duct 9, enters to cool the CEA into the chamber 12, then the heated air enters the exhaust reopened

4 WITH

10 and goes out through the opening of the fire safety shield 2, while the stop 5 is in the position where c lj is continuous); "; rk, sryias.h input op. pr.tir G (P, p; / ;: kts and. air of XOBO / VJ 7 (p.chr nlenme;. air is shown in the drawing by continuous arrows).

When a slave device closed closed exhaust air, - :: recirculated air; n.od; | 7 pcc eGozt into the mixing chamber 11, passing through the air under the air 8, fan 4., the air duct 9, re-enters, for cooling the REL into the camcorder 12, then the heated air enters the exhaust RPO /. UHOCHOD 1) one-. in the inlet of p-ee G pstsmrk cpsgzh-oy duct 7, while the valve 5 is about the position in which it completely closes the opening of the air outlet (the direction of air movement is shown in the drawing by dashed arrows).

When the device is in Zg. - whip cyc-. It is not necessary to hatch 1 the air intake, because. the amount of air, podpzemoz with fan A to air duct 7, and the amount of air taken by the same fan from the air duct 8. are equal to each other.

During the period of preparation of CEA for operation at low temperatures of external air, heating of CEA is carried out:,; .-air of the internal volume of the housing 13. ftp ;: the preparatory mode of the REA device operates in a closed loop, the air circulating inside the device heats up to the minimum allowable temperature at which the REL can begin to work according to the specifications on them, and not shown), which is set to this temperature, turns on the display on the operator’s console (not shown), which allows the operator to re-submit the CEA and, accordingly, the operating mode.

In the operating mode, the device can operate in a closed, partially open and open cycles.

When the device operates in a closed cycle, upon reaching the temperature of the cooling CEA and / ozdukhs above the optimum with the help of a thermal sensor, a thermal analyzer and an electromechanical drive (not shown in the drawing), Zslonkhz 5 partially lifts the air inlet opening 2;) From ohm part of the soul of the exhaust of the creature, ode 10,. t choski not persevere on his way of resistance, begins to go out into the rear door of the hatch 2. This is the reduction of

the amount of air passing through the recirculation duct 7, and compensating for the lack of air for the fan 4 about the mixing chamber 11 by

intake of outside air from the hatch 1 of the air intake. The device begins to work in a partially open mode (with a mix of outside air in the mixing chamber 11), resulting in a temperature

cooling air is reduced to an optimum value.

. A change in the temperature of the outside air leads to a change in the temperature of the cooling air, when the temperature of the cooling air becomes higher (lower) than the optimum, the flap 5 moves through a certain angle, increasing (decreasing) the amount of submixture of the outside air. .

When the flap 5 is in the position in which it completely blocks the bypass opening 6 of the recirculation duct 7. The device proceeds to open-loop operation. With

changing the temperature of the cooling air from the optimal to the maximum allowable damper 5 does not change its position, upon reaching the temperature of the cooling air above the maximum

Light and sound alarms for emergency operation of the device are enabled.

The use of the invention allows to regulate the temperature of the cooling

air within certain limits automatically, semi-automatically or manually depending on the chosen technical solution, greatly simplify the elements of the device and, consequently, increase the reliability of the system, which is caused by that. that one single blade valve is used, the device is safer.

The invention simplifies the design

the intake and exhaust air hatches, the damper itself, does not require an additional design to ensure that no exhaust (hot) air gets back into the system due to the proximity of the intake air hatches and air emission.

Claims (1)

Apparatus of the Invention A device for cooling electronic equipment, comprising a housing with a hatch for external air intake, in the inlet of which an outside air purification filter is installed, and with a hatch for discharging exhaust air, the outlet of which is in communication with the environment the internal volume of the housing chamber for placement of blocks of electronic equipment, the supply air duct with a fan downstream of it, connected through a fan to one end of the air duct, the other end of which opposite to the above end is connected to the internal volume of the chamber for placing the blocks of electronic equipment with one of its sides, an exhaust air duct, the inlet of which is connected to the internal volume of the chamber for accommodating blocks of radioelectronic equipment with its other, opposite to the above, side s, and output - with an outlet for lkzhz pybrosa g.ozduha waste, and connecting the supply air and an exhaust recirculation WHO-pozduhovod whose input is connected to the outlet through the exhaust duct damper, installed It is rotatable and fixable, and its exit is with an inlet duct inlet, characterized in that, in order to increase cooling efficiency, enhance operational capabilities and simplify the design, it is equipped with a mixing chamber, which is located at the outlet of the recirculation and air duct between the inlet duct inlet and an external air cleaning filter and is communicated by its cavity with the cavities of said ducts, the flap is single-ended and is located in an exhaust duct in the place of connection There is no access hole for exhaust air with an inlet for the recirculation duct, and the doors for intake of outside air and exhaust air are spaced apart from each other.