RU209232U1 - Air distribution device in the cabin of a passenger car - Google Patents

Abstract

The utility model relates to the field of transport engineering, in particular to air distribution devices in the cabin of a passenger car. In the air distribution device in the cabin of a passenger car, which includes a distribution manifold 1 with control dampers 2, a ceiling air channel and an intermediate chamber 6 with holes for supplying air to the passenger compartment, a ceiling air channel made in the form of two peripheral parallel sleeves 3, forming adjacent side walls together with the shell 8 of the car on top and ceiling panels 7 below the intermediate chamber 6, the said side walls are provided with outlet holes 5 distributed along the entire length of the sleeves 3, and the ceiling panels 7 under intermediate chamber 6 are perforated to form ventilation holes for air supply to the passenger compartment. The technical result is an increase in the comfort of passengers in the cabin of a passenger car. 2 ill.

Description

The utility model relates to the field of transport engineering, in particular to air distribution devices in the cabin of a passenger car.

A ventilation and heating system for passenger rooms of electric train cars is known (RF patent for utility model No. 44295, publ. 03/10/2005), including an air distribution device in the cabin. The device comprises a distribution manifold, a ceiling air channel and adjustable openings for supplying air to the cabin, installed in series in the car space between the outer/interfloor shell of the car and the ceiling panels.

In the known device, it is difficult to balance an acceptable (less than 7 m/s) air velocity in the air duct and its consumer characteristics in the passenger compartment. Let us explain here that a high air speed with a large volume of it is a source of noise in excess of the maximum permissible, and an insufficient (low) air speed does not provide a uniform supply of prepared (in terms of temperature, humidity, cleaning and other consumer characteristics) air throughout the volume of the car.

Closest to the claimed - the prototype - is the air distribution device in the passenger car cabin, which is an integral part of the car air conditioning system (RF patent for the invention No. 2610753, publ. 02/15/2017). The device comprises a distribution manifold with control dampers, a ceiling air duct and an intermediate chamber placed under said air duct and provided with openings for supplying air to the passenger compartment, installed in series in the car space between the outer shell of the car and the ceiling panels. This technical solution provides a relatively high air exchange rate in comparison with the above analogue.

The disadvantages of the prototype include the vertical layout of the ceiling air duct and the intermediate chamber, which, in the conditions of limited dimensions of the car, either reduces the useful height of the cabin or the height of the air duct profile. The latter, as in the above analogue, makes it difficult to balance the acceptable (less than 7 m/s) air velocity in the air duct and its consumer characteristics in the passenger compartment.

The problem solved by the claimed technical solution is to reduce the vertical dimensions of the air distribution device in the cabin of a passenger car without deteriorating the aerodynamic characteristics of the air duct.

The technical result is an increase in the comfort of passengers in the cabin of a passenger car.

The problem is solved, and the claimed technical result is achieved by the fact that in the air distribution device in the cabin of a passenger car, which includes a distribution manifold with control dampers, a ceiling air channel and an intermediate chamber with openings for supplying air into the passenger compartment, the ceiling air channel is made in the form of two peripheral parallel sleeves, forming an intermediate chamber together with the car shell from above and the ceiling panels from below by the side walls adjacent to each other, the mentioned side walls are provided with outlet holes distributed along the entire length of the sleeves, and the ceiling panels under the intermediate chamber is perforated with the formation of ventilation holes for air supply to the passenger compartment.

The utility model is illustrated by images, which schematically represent

in fig. 1 - air distribution device in the cabin of a passenger car, plan view;

in fig. 2 - section A-A in Fig. one.

The positions marked on the images mean the following

1 - distribution manifold;

2 - control damper (flaps);

3 - a sleeve of a ceiling air duct;

4 - ceiling;

5 - outlet;

6 - intermediate chamber;

7 - ceiling panel;

8 - car shell.

The air distribution device in the cabin of a passenger car is a distribution part of the air conditioning system, has an independent value, can be used in air conditioning systems of various designs (for example, both in the system in accordance with the above analogue, and in the system with the above prototype) and includes a distribution manifold 1 with at least one control damper 2 connected to two sleeves 3 located above the ceiling 4 and forming a ceiling duct. The sleeves 3 contain opposite outlet holes 5. In the central part, between the sleeves 3, there is an intermediate chamber 6, limited by the walls of the mentioned sleeves, on the lower side - by ceiling panels 7, and on the upper side - by the shell of the car 8 (roof or interfloor overlap).

The air from the collector 1 flows (air movement in Fig. 1 and Fig. 2 is indicated by arrows) into the sleeves 3 of the ceiling air duct, located between the ceiling 4 and the shell of the car 8, while the configuration of these sleeves can be very diverse and differ from each other. Further, the air flows through the outlet holes 5 into the intermediate chamber 6, in which the air pressure is balanced. Subsequently, the air through the perforation forming the ventilation holes (not shown in the figure) in the ceiling panels 7 is forced out into the passenger compartment of the car. The control damper 2, in accordance with the embedded software, regulates the volume of supply air depending on the temperature and/or other parameters in the car cabin.

As follows from the above description, the claimed technical solution is characterized by the fact that instead of one central sleeve of the ceiling air duct, through which air is supplied to the passenger compartment, two sleeves are used, located above the ceiling with the formation of a central intermediate chamber. This solution allows you to increase the free cross section of the duct, thereby reducing the speed of air movement in the ventilation ducts, and, consequently, aerodynamic noise.

It is also characteristic of the claimed technical solution that it contains an intermediate central chamber in which the air pressure is equalized, and already from the intermediate chamber air is supplied to the passenger compartment. This solution eliminates the need for additional shutters to configure the device, as is the case in the prototype. This simplifies the adjustment of the device during acceptance tests of the car and during operation. And by eliminating the unnecessary details of these dampers, the total cost of the entire air distribution device is also reduced.

This arrangement makes it possible to obtain the total cross-section of the air duct necessary to achieve acceptable air supply rates to the passenger compartment by changing the configuration of the ceiling air duct sleeves, taking into account the shape of the ceiling installed in the car and the volume of the overhead space. At the same time, air is supplied to the central intermediate chamber not from the end of the car interior, but through holes in the sleeves of the ceiling air duct, distributed along their length. This solution makes it possible to reduce the free section between the central ceiling panels and the shell (roof/ceiling) of the car, thereby making it possible to increase the height of the car ceiling and increase the ergonomic interior space.

Computer simulation of the operation of the claimed technical solution showed that, including the claimed ones, the utility model has the following advantages:

ensuring low (up to 3 m/s) air speed, acceptable (up to 15 dB) noise level and stable (temperature variation does not exceed 3%) air temperature in the car cabin;

simplification of the system settings and reduction of the laboriousness of carrying out acceptance tests of the car;

reduction in the cost of the ventilation system by reducing the number of parts and assemblies (up to 15% compared to the prototype);

increase in space in the car cabin (up to 5% compared to the prototype) by increasing the height of the ceiling;

improving the quality of the ventilation system by reducing fluctuations in the speed of air movement in the passenger compartment (up to 5-7% compared to the prototype);

reduction of noise level from the operation of the air conditioning system (up to 15% compared to the prototype).

The foregoing allows us to conclude that the task set - reducing the vertical dimensions of the air distribution device in the passenger car compartment without deteriorating the aerodynamic characteristics of the air duct - has been solved, and the claimed technical result - increasing passenger comfort in the passenger car cabin - has been achieved.

Claims (1)

An air distribution device in the passenger car cabin, which includes a distribution manifold with control dampers, a ceiling air duct and an intermediate chamber with openings for supplying air to the passenger compartment, installed in series in the car space between the outer shell of the car and the ceiling panels, characterized in that the ceiling air duct is made in in the form of two peripheral parallel sleeves, forming adjacent to each other side walls, together with the outer shell of the car from above and ceiling panels from below, an intermediate chamber, the said side walls are provided with outlet holes distributed along the entire length of the sleeves, and the ceiling panels under the intermediate chamber are perforated to form ventilation openings for air supply to the cabin.

Images