RU74358U1 - DEVICE FOR HEATING AND VENTILATION OF THE CABIN OF A RAILWAY VEHICLE CAR - Google Patents

Abstract

A device for heating and ventilation of a driver’s cab of a rail vehicle comprises a case with windows in which a filter, a fan and a heat exchanger are installed. In the front part of the housing there is a mechanism for regulating the supply of external and recirculated air, made in the form of an open cylindrical shell with through grooves, a shaft rotatably mounted, and dampers located on the shaft with the possibility of radial movement to through grooves and overlapping through grooves of the cylindrical shell . The open part of the cylindrical shell is turned towards the fan. The through grooves in the cylindrical shell and the windows in the case are geometrically similar and are located opposite each other. The body of the device is located in the frame of the footrest of the driver. The technical result when using the utility model is to improve the ergonomic performance of the cabin by placing the device for heating and ventilation in the footrest of the driver. 7 ill.

Description

The utility model relates to rail vehicles, namely, to devices for heating and ventilation of the driver's cab of a rail bus with a diesel engine.

Known heating and ventilation installation of the vehicle, containing a fan and a heat exchanger located in a box-shaped housing with holes, and rotary valves located cantilever (see US patent No. 5162020, NKI 454/156, 11/10/1992).

This device cannot be placed directly in the working area of the driver’s cab of a rail vehicle, due to the presence of a large number of cantilever-mounted dampers and a large body length.

The closest to the proposed utility model for the combination of essential features is a heating, ventilation and air conditioning system for the cabin of a rail loader, comprising a housing with windows in which a filter, a fan and a heat exchanger are installed (see US patent No. 6223807, NKI 165/43, 01.05. 2001).

The known system cannot be used for placement in auxiliary equipment of the working area of the driver’s cab of a rail vehicle due to the large length of the ducts.

The technical result when using the proposed utility model is to improve the ergonomic characteristics of the cabin by placing the device for heating and ventilation in the footrest of the driver.

The specified technical result is achieved by the fact that in the device for heating and ventilation of the driver’s cab of the rail vehicle, comprising a case with windows, in which a filter, a fan and a heat exchanger are installed, the case is located under the driver’s footrest and is equipped with a mechanism for regulating the supply of external and recirculated air made in the form of an open cylindrical shell with through grooves installed in the housing, a shaft mounted rotatably in the housing, and dampers, positioned conjugated to the shaft with the possibility of radial movement to the through grooves and through slots overlapping cylindrical shell, the unclosed part of which faces towards the fan.

In addition, the through grooves in the open cylindrical shell and the windows in the case are made geometrically similar and are located opposite each other.

In Fig.1 shows a heating and ventilation device for the driver's cab of a rail vehicle, General view;

figure 2 is a section aa in figure 1;

figure 3 is a section bB in figure 1;

Figure 4 shows a mechanism for regulating the supply of external and recirculated air, a General view;

figure 5 is a view In figure 4;

in Fig.6 is a section GG in Fig.4;

Fig.7 is a section DD in Fig.4.

A device for heating and ventilating the driver’s cab of a rail vehicle comprises a housing 1, on the base of which 2 there is a stand 3 for the driver’s legs. The housing 1 has a front wall 4 with a window 5 for intake of air from the cabin, a rear wall 6 with a window 7 for the exit of prepared air and an internal partition 8. At the base 2 of the housing 1 and floor 9 of the driver’s cab, a window 10 for intake of outside air is made. Inside the housing 1, between the partition 8 and the rear wall 5, there is an electric fan 11 and an air-liquid heat exchanger 12 communicated through a distributor 13 with a liquid cooling system of the rail vehicle engine. In addition, between the partition 8 and the stand 3 for the driver’s feet, a filter 14 is installed to clean the air of mechanical impurities. In the front of the housing 1 between the partition 8 and the front wall 4 there is a mechanism 15 for regulating the supply of external and recirculated air.

The mechanism 15 for regulating the supply of external and recirculated air is made in the form of an open cylindrical shell 16 with two through grooves 17 and 18 of a rectangular shape, a shaft 19, rotatably fixed in the housing 1, shutters 20 and 21 located on the shaft 19 with the possibility of radial movement to the through grooves 17 and 18 and overlapping them. The shaft 19 with the shutters 20 and 21 is installed inside the open cylindrical shell 16, the open part of which is facing the fan 11. The through grooves 17 and 18 in the open cylindrical shell 16 and the windows 5 and 10 in the housing 1 are made geometrically similar and are located opposite each other.

The through groove 17 is intended for air intake from the driver’s cabin, the through groove 18 is for intake of outside atmospheric air.

The flaps 20 and 21 are made as part of a hollow cylinder with a diameter equal to the inner diameter of the open cylindrical shell 16, and are equipped with pushers 22, 23 and 24, 25 (two for each flap) mounted on the shaft 19 with the possibility of radial movement. To clamp the shutters 20 and 21, the pushers 22, 23 and 24, 25 are equipped with springs 26, 27 and 28, 29.

A device for heating and ventilation of the driver’s cab of a rail vehicle operates as follows.

To increase the air temperature in the driver’s cab, the dispenser valve 13 is first opened for liquid from the rail vehicle’s engine cooling system to enter the heat exchanger radiator 12. By turning the shaft 19 of the mechanism 15 for regulating the supply of external and recirculated air, the shutter 21 is set to the position where it closes a through groove 17 located opposite the window 5, intended for intake of recirculated air from the cab. The damper 20 is outside the zone of the through groove 18, without blocking the access of external air through the window 10, made in the floor of the cab.

The coolant from the engine cooling system of the rail bus through the pipeline enters the air-liquid heat exchanger 12, heating the radiator plates. Under the action of the vacuum created by the electric fan 11, atmospheric air through the window 10 in the base 2 of the housing 1, the through groove 18 of the open cylindrical shell 16 of the mechanism 15 for regulating the supply of external and recirculated air and

the air filter 14 enters the radiator of the air-liquid heat exchanger 12 and heats up. After the heat exchanger 12, heated air enters through the window 7 in the rear wall of the housing 1 into the cabin. The through groove 18 of the open cylindrical shell 16 of the mechanism 15 for regulating the supply of external and recirculated air in this case is in the open state, and the shutter 21 is moved by turning the shaft 19 to a position outside the boundaries of the through groove 18. The position of the shutter is fixed by the clamping force of the springs 30 and 31 .

If it is necessary to quickly warm up the vehicle driver’s cabin during the cold season, the shutter 21 of the mechanism 15 for regulating the supply of external and recirculated air is moved by turning the shaft 19 to a position in which the shutter 21 completely covers the through groove 18, preventing atmospheric air from entering the body 1 device for heating and ventilation of the cabin of a rail vehicle. The damper 20 thus moves to a position in which the through groove 17 of the mechanism 15 for regulating the supply of external and recirculated air is fully open. At the same time, air is taken directly from the cabin, which, taking into account the small volume of the cabin, contributes to accelerated heating.

In the warm season, when there is no need for heating, the device for heating and ventilation of the cabin of the rail vehicle operates in the ventilation and air purification mode. To do this, the shutter 20 by moving the shaft 19 is moved to a position in which the shutter 20 completely overlaps the through groove 17. The window 10 is completely open. The air-liquid heat exchanger 14 by closing the distributor 13 is disconnected from the engine cooling system

vehicle and is in a cold state. Under the action of the vacuum created by the electric fan 11, the atmospheric air through the window 10 in the base 2 of the housing 1 and the through groove 18 of the mechanism 15 for regulating the supply of external and recirculated air enters the filter 14 for cleaning air from mechanical impurities and through the window 7 on the rear wall of the housing 1 enters the cabin.

Claims (2)

1. Device for heating and ventilation of the driver’s cab of a rail vehicle, comprising a housing with windows in which a filter, a fan and a heat exchanger are installed, characterized in that the housing is located under the driver’s footrest and is equipped with a mechanism for regulating the supply of external and recirculated air, made in the form of an open cylindrical shell with through grooves installed in the housing, a shaft mounted rotatably in the housing, and dampers located on the shaft with the possibility of p dially move to the through grooves and through slots overlapping cylindrical shell, the unclosed part of which faces towards the fan. 2. The device according to claim 1, characterized in that the through grooves in the open cylindrical shell and the windows in the housing are made geometrically similar and are located opposite each other.