RU2268833C1 - Passenger car air-conditioning system - Google Patents

Abstract

FIELD: railway transport; air-conditioning systems.

SUBSTANCE: proposed air-conditioning system contains set for processing and transportation of air connected by hoses with at least one recirculation and one incoming air ducts located between roof and ceiling of car, in housing of which exhaust holes furnished with regulated valves and incoming holes are made, respectively. Incoming holes are provided with regulated valves. Area of passage of regulated valves increases in direction of air flow in incoming duct and decreases in direction of air flow in recirculation air duct. Partition setting direction of air flow in saloon is installed along longitudinal axis of car. Regulated valves are connected by adapters with holes in ceiling located in car compartments. Regulated valve consists of movable plate connected by screw-nut pair with fixed part consisting of base with fitted-on U-shaped support of screw and secured on base of semiround obstacle. At least one deflector to let out air is made in car roof.

EFFECT: provision of tolerable velocity of air flow and high specific number of air changes per hour, easy and convenient control of volume of incoming and recirculation air in passenger car saloon.

3 cl, 6 dwg

Description

The claimed invention relates to air conditioning devices mainly of a passenger car.

The well-known "Ventilation and heating installation of a passenger car" (GDR patent No. 239763, publ. 08.10.86, MKI B 60 N 3/00, B 61 D 27/00). In it, the unit for processing and moving air takes fresh air through the air intake hatches and directs it through the heating device and the supply air duct with supply air openings to the passenger rooms. Exhaust air is removed from the car through static roof ventilation devices. The circulation air from the side passage through the adjustable ceiling hatch and the recirculation duct is directed to the unit for processing and moving the air. By adjusting the ratio of fresh and circulating air in combination with the heating temperature, the necessary comfortable indicators are achieved in the premises of the car.

It is known "Device for air conditioning of a passenger car" (application Germany No. OS 3302424, publ. 02.08.84, MKI B 61 D 27/00). Here, the device provides the supply of prepared air through at least one supply air duct running along the car in the roof region. The supply and exhaust openings are grouped in half of the carriage or in compartments, and these groups are equipped with separate units for processing and moving air. The undercover space of the car is used as a recirculation duct, and part of the exhaust air is additionally discharged out through openings in the floor area.

When using these analogs, the occurrence of increased air velocities at exhaust ventilation hatches at the ends of the car, the spread of odors in the car, low air exchange rate.

For the prototype adopted "Installation of forced ventilation of a passenger car" (GDR patent No. 270822, publ. 16.08.89, MKI B 61 D 27/00). Here, the installation is located in the roof area of the passenger car, fresh air is sent to the passenger compartments through the supply air duct. From the compartments, air moves to the side passage, from where it enters the roof area through the ceiling grilles and can be vented out through ventilation grilles that are equipped with flap valves, or through the recirculation duct, in which the adjustable valve is installed, to be supplied as recirculation air to the mixing chambers of the unit for processing and moving air.

This device does not have sufficient simplicity and convenience in regulating the volume of supply and circulation air, which makes it difficult to achieve acceptable speeds and high air exchange rates to ensure comfortable conditions for passengers.

The objective of the invention is to provide comfortable conditions for passengers, namely:

- achieving acceptable air speeds and high air exchange rates;

- simplicity and ease of regulation of the volume of supply and recirculation air.

To solve this problem, the car is equipped with an air conditioning system containing an air handling and moving unit, connected by sleeves to at least one supply and at least one recirculation ducts located between the roof and ceiling of the car, in the bodies of which are respectively supplied and equipped with adjustable exhaust valves holes.

What is new is that the air conditioning system is additionally equipped with adjustable valves installed in the supply air openings, and the passage area of the adjustable valves increases in the direction of air movement in the supply air duct and decreases in the direction of air movement in the recirculation air duct, along the longitudinal axis of the car there is a partition that sets the direction the movement of air in the cabin, adjustable valves are connected through adapters with holes in the ceiling, placed in the compartments of the car.

In addition, the adjustable valve consists of a movable plate connected by a screw-nut pair with a fixed part, consisting of a base with a U-shaped screw support mounted on it and fixed to the base of a semicircular obstacle, and there are one or several baffles to prevent the spread of odors from toilets and boiler rooms.

The technical result is as follows.

Installation of adjustable valves in the supply and exhaust openings provides simplicity and convenience of regulating the volume of supply and recirculation air.

Placing a recirculating air duct in the compartments of the car, connecting the adjustable valves through adapters with openings in the ceiling, changing their bore in the direction of air movement in the air ducts, as well as the presence of a partition that sets the direction of air movement in the cabin, ensure an acceptable air velocity and high air exchange rate .

The essence of the invention is illustrated by the description with reference to the drawings, where

figure 1 - air conditioning system (plan view);

figure 2 - section aa in figure 1;

figure 3 - section bB in figure 1;

figure 4 - section bb in figure 1;

5 is an adjustable valve, the main view;

6 is an adjustable valve, a top view.

The air conditioning system contains an air conditioner 1 used as a unit for preparing and moving air, a sleeve 2, at least one supply 3 and a recirculation 4 duct, deflectors 5, supply openings 6, exhaust openings 7, adjustable valves 8 of the supply duct 3, adjustable valves 9 of the recirculation duct 4, ventilation grilles 10, adapters 11 of the supply air duct 3, adapters 12 of the recirculation duct 4, the partition 13.

The direction of air movement in Fig.1-4 is shown by arrows.

The air conditioner 1 is connected by sleeves 2 with the supply air 3 located between the roof 14 and the ceiling 15 of the carriage 3 and the recirculation ducts 4. In the supply air duct 3, inlet openings 6 are made, in which adjustable valves 8 are mounted, connected by adapters 11 with openings 16 located in the car compartments 16 in the ceiling 15. In the recirculation air duct 4, exhaust openings 7 are made in which adjustable valves 9 are connected by adapters 12 s holes 17 in the ceiling 15 located in the compartments of the carriage. Each adjustable valve 8, 9 consists of a movable plate 18 with a nut 19 fixed on it, a fixed part consisting of a base 20 with mounted on it we have a screw 21, a U-shaped support 22 of the screw 21 and an obstacle 23 made in the form of a semicircular sheet. The change in the cross-sectional area of each adjustable valve 8, 9 is carried out by moving the movable plate 18 with the nut 19 on the screw 21. In this case, the cross-sectional area of the adjustable valves 8 increases in the direction of air movement in the supply air duct 3, and the cross-sectional area of the adjustable valves 9 decreases in the direction air movement in the recirculation duct 4. Along the longitudinal axis of the car, a partition 13 is installed that sets the direction of air movement in the passenger compartment. In the roof 14, at the ends of the car, deflectors 5 are located for air outflow.

Under the action of the fan installed in the air conditioner 1, the air outside the car enters through the ventilation grilles 10 into the supply air duct 3 and through the adjustable valves 8, adapters 11 and openings 16 of the ceiling 15 enters the compartments of the car. When air moves in the supply air duct 3, an increased pressure zone is created in front of the obstacles 23 of the adjustable valves 8, thereby enhancing the effect of fresh air inflow into the car compartments. Having taken the direction of movement defined by the partition 13, the supply air is mixed with the interior air and is sucked into the openings 17 of the ceiling 15, from where it passes through the adapters 12 and adjustable valves 9 into the recirculation duct 4, through which it moves to the mixing chamber with the outside air located in the air conditioner 1. When moving in a recirculation duct 4, the air goes around the obstacles 23 of the adjustable valves 9, creating behind them vortex zones, and therefore, zones of reduced pressure. This enhances the effect of air intake from the compartments of the car. A smaller part of the interior air is discharged through deflectors 5.

Claims (3)

1. The air conditioning system of a passenger carriage having an assembly for processing and moving air, connected by sleeves to at least one supply and at least one recirculation ducts located between the roof and the ceiling of the car, in the bodies of which there are respectively supply and exhaust openings provided with adjustable valves characterized in that the supply openings are equipped with adjustable valves, and the passage area of the adjustable valves increases in the direction As the air moves in the supply air duct and decreases in the direction of air movement in the recirculation air duct, a partition is installed along the longitudinal axis of the car, which sets the direction of air movement in the cabin, and adjustable valves are connected via adapters with openings in the ceiling located in the car compartments. 2. The air conditioning system of a passenger car according to claim 1, characterized in that the adjustable valve consists of a movable plate connected by a screw-nut pair with a fixed part consisting of a base with a U-shaped screw support mounted on it and fixed to the base semicircular obstacles. 3. The air conditioning system of the passenger car according to claim 1, characterized in that at least one deflector is located in the roof of the car for air outflow.

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