SU435365A1 - DEVICE FOR HEATING OIL - Google Patents

Description

one

The invention relates to means facilitating the operation of automobiles and tractors in winter conditions, namely, the heating of the oil in the crankcase (pan) of an internal combustion engine.

At lower temperatures, lubrication in the engine pan, gearbox and in the axles of the machine becomes viscous, which makes it difficult to operate the machines in winter conditions. When using heaters, they heat the lubricant, not allowing it to be coked.

Devices are known for heating an oil in a pan of an internal combustion engine, comprising a heat exchanger with electrodes placed in a conductive liquid.

Such a device has a complex structure. Since the case of the machine is under voltage with the device turned on, the current can flow freely along the circuit: the electrode of the phase conductor — the conductive liquid — the cabinet of the machine, which creates a danger to the operating personnel.

To simplify the design of the preheater, to improve safety and to expand the field of application of the preheater, the proposed device uses a heat exchanger with a nozzle in which a cartridge of insulating material is embedded. Electrodes are located in the cartridge, in the space between which the conductive

liquid, and the volume of liquid can be 250-2000 times less than the volume of the heat exchanger.

The drawing shows the proposed device, the cut.

The device consists of a heat exchanger 1, the nozzle 2 of which is welded into the engine tray 3, and a cartridge 4 made of an insulating material. Electrodes 5 and 6 are placed in the cartridge 4, between which the conductive liquid A. is poured.

The device works as follows.

When the device is turned on into the AC network, the electrically conductive liquid boils, and the resulting vapor enters the heat exchanger 1, where it gives off heat and condenses again to the cartridge 4. In the case of complete evaporation of the liquid, the contact between electrodes 5 and 6 is interrupted - the device is turned off. But the device is turned off only after the temperature of the oil in the engine pan reaches the temperature of the steam inside the heat exchanger 1. Since the oil always gives off heat to the external environment, the device works continuously, giving off heat to the oil. Consequently, at a lower ambient temperature (air), the steam in the heat exchanger 1 will condense more intensively, and the device will have more power than at a higher temperature.

the environment. With an increase in the temperature of the oil, the resistance of the electric circuit increases, since most of the liquid is in the vapor state and, accordingly, the continuous contact between the electrodes decreases.

The oil temperature in the engine oil pan is stabilized one hour after the device is turned on.

It is advisable to turn on the device immediately upon returning the car to the park and keep the oil heated during the whole inter-period. Electricity consumption for the 14th hour of the inter-replacement period is 2-3 kW.

The temperature of the surface of the heat exchanger does not exceed 100 ° C, and the oil does not lose its qualities from DRR;

Based on experimental data, it was also established that, depending on

from the configuration of the heat source on its inner surface, it is in the heating state, constantly from 40 to 60% of the liquid poured into the device.

Consequently, it is necessary to pour a conductive liquid into the device by 40-60% more than the calculated dose.

Subject invention

A device for heating an oil ;, for example, in a motor; an internal combustion gel containing a heat exchanger located in a pan with a heating element in the form of electrodes, characterized in that, in order to improve safety and to expand the field of application, the electrodes are dimensioned; the cartridge chuck with the conductive liquid poured between them.