SU1320617A1 - Device for thermostatting working liquid of self-propelled machine hydraulic system - Google Patents

Abstract

The invention relates to refrigeration technology and allows to intensify heat exchange and reduce energy costs. The ejector is installed in the exhaust gas line (MWG) 2 of the engine 3 internal combustion at the connection point of the gas chamber (GC) 5 MBG 2 inlet 7. The ejector is formed by a fixed curved valve 9 with the concave side facing the pipe 7. In the MHG 2 behind the ejector in the direction of travel gases installed movable damper 8 connected to a thermal sensor 12 placed in block I. The heat exchanger connecting tank 1 with HA 5 is made in the form of wick heat pipes 4. When the working fluid (RJ) is low, the exhaust gases enter the HA 5 ohm The evaporation zones are coarse 4, with the refrigerant vapor condensing, transferring heat to the PC. With an increase in the temperature of the RJ fluid, some of the exhaust gases are emitted into the atmosphere. When the TOR of the RJ approaches the upper permissible limit, the heat of condensation of the refrigerant is given to the atmospheric air entering the HA 5. 1 il. and s

Description

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The invention relates to refrigeration engineering, in particular, to installations for thermostating the working fluid of hydraulic systems of self-propelled machines with internal combustion engines.

The purpose of the invention is to intensify heat transfer and reduce energy consumption.

The drawing shows the scheme of the proposed installation for thermostating the working fluid of the hydraulic system of a self-propelled machine.

The installation contains a tank 1 with a slave. whose hydraulic fluid, line 2 of the exhaust gases of the engine 3 internal combustion, heat exchanging device in the form of a package of heat pipes 4 equipped with a wick. One end of each of the heat pipes A is built into the tank 1, and the other is placed in the gas chamber 5 connected by the nozzle 6 with the atmosphere and the nozzle 7 with the exhaust gas line 2. The trunk 2 is equipped with a movable damper 8 and an ejector formed by a curved damper 9, under the concave part of which there is an opening 10 to which the nozzle 7 is attached. The movable damper 8 is connected by a pull 11 with the movable part of the thermal sensor 12, which changes its dimensions depending on on temperature, and placed in tank 1. The tank 1 is connected by pipelines 13 to a pump 14 and a distributor 15.

The installation for thermostating the working fluid works as follows.

When the temperature of the working fluid in the tank 1 decreases, the thermal sensor 12 is compressed and, through the pull 11, the movable valve 8 blocks the exhaust gas line 2. After starting the engine 3, the exhaust gases through the holes 10 and the pipe 7 enter the gas chamber 5 and wash the evaporation zones of the heat pipes 4. At the same time, the coolant in them heats up and evaporates. The vapor phase of the coolant enters the condensation zones of the heat pipes 4, the condensation zones In this case, they are in tank 1. The refrigerant vapor condenses there, transferring heat to the working fluid of the hydraulic system. The resulting condensate flows into the evaporation zones under the influence of gravitational forces, and also flows there.

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capillary forces of thermal wicks

pipes.

When the temperature of the working fluid in the tank 1 is increased, the thermal sensor 2 expands and drives the pull 11, which opens the valve 8. Part of the exhaust gases is emitted into the atmosphere that does not enter the gas chamber 5.

When the temperature of the working fluid approaches the upper permissible limit, the movable valve 8 is completely open and the exhaust gases, the passage over the fixed valve 9, increase the flow rate, as a result, a vacuum zone is formed under the valve 9. Under the action of the resulting pressure difference, atmospheric air through the pipe 6, the gas chamber 5 and the pipe 7 enters the exhaust gas line 2. The air passing through the gas chamber 5 washes the ends of the heat pipes 4 there. In this case, their evaporation zones will be in the tank 1. The heat pipe refrigerant 4 evaporates in these zones under the influence of the heat of the working fluid. The refrigerant vapor enters the more cold in this case, the ends of the heat pipes 4, located in the gas chamber 5, and there are condensed, giving off heat to the air entering the chamber 5. The condensate formed is supplied by wicks to the evaporation zones of the heat pipes 4.

In order to avoid local overheating of the working fluid in the mode of its heating with the help of the pump 14 and the distributor 15 it is circulated through the tank 1 "

Claims (1)

Invention Formula A unit for thermostating a working fluid of a hydraulic system of a self-propelled machine with an internal combustion engine, containing a tank with a working fluid, a gas chamber with two nozzles, one of which is connected to the atmosphere, and the other is connected to the engine intake manifold, a movable valve and a thermal sensor connected to it, also a heat exchanger connecting the tank to the gas chamber, characterized in that 313206174 intensification of heat exchange and a lower side to the specified nozzle, no energy consumption, the exhaust line, and the movable valve of the installed gases is equipped with an ejector, installed in the exhaust line for installed at the point of connection of the ejector pipe during the movement of gases, The gas chamber to this highway 5 thermal sensor is placed in the tank, and the heat exchanger formed by a fixed curvilio-exchange device is completed in a linear valve facing a concave-shaped wick heat pipes.