RU2610753C1 - Wagon air conditioning system - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: wagon air conditioning system comprises a ventilation unit (1) with an air heater (2), an outer air channel (3), injection (4) and recirculation (5) channels. Inside the wagon there are feeding channels of two levels connected to the injection (4) channel, a ceiling (8) and a floor (9) channels of plenum air, connected to feeding channels. At the sides of entrance doors (10) there are vertical channels of plenum air connected to the floor channel (9) of plenum air. Control gates are installed in the feeding channels. Outside the wagon body there are deflectors (14) installed, and inside the body - exhaust holes. Feeding channels are placed between the roof and the ceiling of the wagon, and in the ceiling there is a hole connected via the intermediate chamber with the ceiling channel. Feeding channels are connected to the injection channel with a splitter, upstream which a fire damper is installed in the injection channel. The injection channel is equipped with an air decontamination device.

EFFECT: high air exchange rate.

3 cl, 5 dwg

Description

The invention relates to air conditioning devices for a car, mainly an electric train car.

A device for supplying fresh air and recirculating air intake in a passenger car with an air conditioning system is known (RF patent for the invention No. 2254252, IPC B61D 27/00, publ. 06/20/2005), comprising a fan, heating elements, a pressure duct, supply air ducts of two levels of the car and recirculation channel. This design is ineffective in cars with a large number of doors and does not provide a high rate of air exchange when the car compartment is fully loaded.

A known system of heating and ventilation of interiors of rail vehicles (RF patent for utility model No. 38318, IPC B61D 27/00, publ. 06/10/2004), containing ceiling, floor and vertical air ducts, fan heaters, control valves. Vertical ducts are located on both sides of the doorways.

This system is difficult to manufacture and maintain, and its use does not sufficiently prevent the penetration of outside air into the passenger compartment when opening the car doors.

A known system for heating and ventilation of a subway car (RF patent for the invention No. 2341391, IPC B61D 27/00, publ. 20.12.2008) containing vertical and horizontal air ducts, a fan, ring heating elements, a damper. Vertical ducts are located on both sides of the doorways.

This system is also difficult to manufacture and maintain, and its use does not sufficiently prevent the penetration of outside air into the passenger compartment when opening the car doors. In addition, the presence of protruding parts of horizontal ducts can cause inconvenience to passengers.

The use of these analogues does not provide an effective exhaust of exhaust air from the car’s premises and, as a result, a high air exchange rate and acceptable air velocity and temperature in the car’s cabin, and also does not sufficiently prevent the penetration of outside air into the car when the car’s doors are opened.

The system of ventilation and heating of passenger rooms of electric train cars was adopted as a prototype (RF patent for utility model No. 44295, IPC B61D 27/00, published on March 10, 2005). This system contains a fan unit with an electric air heater, the outlet of which is connected to a discharge duct, and to the inlet is an outside air duct and a recirculation air duct, two ducts of the lower level of the car and one ceiling duct. In this case, the system is equipped with an air distribution damper connecting the discharge duct to the ducts of the lower level of the car or to the ceiling duct. A regulating flap is installed in each outdoor air duct.

In this system, air from the discharge duct is supplied separately to the ceiling air duct or to the lower level ducts due to the operation of the air distribution flap. To compensate for thermal air inflows, it is necessary to increase the supply air volume, and the increased supply air volume can be supplied either from below - through the ducts of the lower level, or from above - through the ceiling air channel. At the same time, it may be difficult to ensure acceptable air velocity and temperature in the passenger compartment. And the high speed of air movement with its large volume is a source of noise.

The objective of the proposal is:

- reduction in the volume of outside air entering the passenger compartment when opening the car doors;

- ensuring a low speed of air movement and an acceptable level of noise and air temperature in the passenger compartment;

- achieving a high rate of air exchange in the passenger compartment.

For this, the car is equipped with an air conditioning system comprising at least one fan unit with an air heater, an external air channel, discharge and recirculation channels, supply channels of the lower and upper levels located inside the car and connected to the discharge channel, ceiling and floor supply air ducts connected to the supply channels of the lower and upper levels.

What is new is that it is equipped with vertical supply air channels with exhaust openings located on the sides of the entrance doors and connected to the floor supply air channel, control dampers installed in the supply channels of the lower and upper levels, as well as an air exhaust system consisting of deflectors outside the wagon’s body and exhaust openings inside the body, and the lower and upper level feed channels are located between the roof and the ceiling of the wagon, and a hole is made in the ceiling for ode of air connected through an intermediate chamber to the ceiling duct of the supply air.

New is the fact that the supply channels of the lower and upper levels are connected to the discharge channel by means of a splitter, while a fire damper is installed in the discharge channel to the splitter, and the discharge channel is equipped with an air disinfection device.

The technical result is expressed in the following.

The presence of vertical channels of supply air with exhaust openings located on the sides of the entrance doors and connected to the floor channel of the supply air, and the placement of the ceiling channel between the roof and the ceiling of the car, if there is a hole in the ceiling, provides air in the passenger compartment. This leads to a reduction in the volume of outside air entering the cabin, especially when opening the car doors.

The presence of control flaps in the supply channels of the lower and upper levels allows you to control the supply of the required volume of air, which reduces the speed of air movement in the channels. This leads to an acceptable level of noise and air temperature in the passenger compartment.

The placement of the lower and upper level supply channels between the roof and the ceiling of the car and the presence of a hole in the ceiling connected through an intermediate chamber to the ceiling duct of the supply air ensures acceptable air speeds in the cabin, and the presence of an air exhaust system ensures the removal of exhaust air from the car's premises. This, in turn, achieves a high rate of air exchange in the car.

The accompanying drawings depict:

FIG. 1 - car air conditioning system, general view;

FIG. 2 - car air conditioning system, top view;

FIG. 3 is a section AA in FIG. 2;

FIG. 4 is a section BB in FIG. 2;

FIG. 5 is a section BB of FIG. 2.

The air direction in FIG. 3, 4 are shown by arrows.

The car air conditioning system comprises at least one fan unit 1 with an air heater 2, an outside air channel 3, a discharge 4 and a recirculation 5 channels (Fig. 1). It also contains the supply channels of the lower 6 and upper 7 levels (Fig. 2) located inside the car and connected to the discharge 4 channel, ceiling 8 and floor 9 supply air channels (Fig. 1) connected to the supply channels of the lower 6 and upper 7 levels (Fig. 2). The system is equipped with vertical 11 channels of supply air located on the sides of the entrance doors 10 and connected to the floor 9 channel with exhaust openings 12 (Fig. 3). It is also equipped with control flaps 13 installed in the supply channels of the lower 6 and upper 7 levels, and an air exhaust system consisting of deflectors 14 outside the car body and exhaust holes 15 inside the body (Fig. 5). The feed channels of the lower 6 and upper 7 levels are placed between the roof 16 and the ceiling 17 of the car (Fig. 3). An opening 18 is made in the ceiling 17, connected through an intermediate chamber 19 to the ceiling 8 channel of the supply air (Fig. 4). The supply channels of the lower 6 and upper 7 levels are connected to the discharge 4 channel by means of a splitter 20. A fire damper 21 is installed in the discharge 4 channel up to the splitter 20. The discharge 4 channel is equipped with an air disinfection device 22 (Fig. 2).

The air from the external air channel 3 enters the fan unit 1, where it is mixed with the air coming from the recirculation channel 5. Then, through the heater 2 and the fire damper 21, the air is directed to the discharge channel 4 and the disinfection device 22. Next, the air enters the splitter 20 and the supply channels of the lower 6 and upper 7 levels, and from there - into the ceiling 8 and floor 9 channels of the supply air. Some part of the supply air enters the vertical channels 11, from where, through the exhaust openings 12, it partially enters the car room and is sent to the floor channel 9. At the same time, some of the air from the ceiling 8 channel enters the car through the hole 18 and the intermediate chamber 19. The exhaust air is discharged outside through the exhaust holes 15 of the deflectors 14, and partially enters the recirculation channel 5. According to the software, the control flaps 13 regulate the volume of supply air depending on the temperature in the car room.

Claims (3)

1. A car air conditioning system comprising at least one fan unit with an air heater, an external air channel, discharge and recirculation channels, lower and upper level supply channels located inside the car and connected to the discharge channel, ceiling and floor supply air channels, connected to the supply channels of the lower and upper levels, characterized in that it is provided with vertical supply air channels with exhaust openings located on the sides of the entrance doors and connected to the floor supply air duct, control dampers installed in the supply channels of the lower and upper levels, as well as an air exhaust system consisting of deflectors outside the car body and exhaust openings inside the body, and the supply channels of the lower and upper levels are located between the roof and the ceiling of the car, and in the ceiling there is a hole connected through an intermediate chamber to the ceiling duct of the supply air. 2. The car air conditioning system according to claim 1, characterized in that the supply channels of the lower and upper levels are connected to the discharge channel by means of a splitter, while a fire damper is installed in the discharge channel to the splitter. 3. The car air conditioning system according to claim 1, characterized in that the discharge channel is equipped with an air disinfection device.

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