RU1803680C - Air-conditioning unit - Google Patents

Abstract

Usage: air conditioning. SUMMARY OF THE INVENTION: an air conditioning installation comprises a vortex tube with an adjustable valve at its hot end, hot and cold flow lines connected to the respective ends of the vortex pipe, and a heat exchanger, wherein the adjustable valve is in communication with the atmosphere and the heat exchanger, and the cold end is a vortex pipes - with a consumer, a cooling chamber with opposed openings and an ejector, an additional ejector and a boost chamber, the hot end of the vortex tube being finned and compatible A wall with an adjustable valve is located in the cooling chamber. The heat exchanger is made in the form of a finned duct and communicated through an additional electric ejector with a boost chamber, the cold end of the vortex tube is communicated with the consumer through the latter, and an adjustable valve with the atmosphere through the ejector of the cooling chamber. 1 ill. Ј

Description

The invention relates to an air conditioning technique, and in particular to devices for cooling air.

The purpose of the invention is to improve the aerodynamic characteristics of the air flow.

This object is achieved in that in a known installation comprising a vortex tube with an adjustable valve at the hot end and hot and cold flow lines, according to the present invention, the finned end is located inside the housing with openings for the passage of cooling air, opposite to which an ejector is installed, connected to one nozzle of the control valve, and to the other nozzle an external finned duct is connected to pass the heated air, on which flax ejector connected to the charge chamber located on the nozzle of the cold end of the vortex tube, with the formation of an annular gap, and the diameter of the nozzle of the charge chamber is selected in accordance with the ratio:

00

about

with about

00

about

D d V 1 + K2;

where D is the diameter of the nozzle of the boost chamber;

d is the diameter of the cold end pipe;

K is the ratio of the air velocity at the outlet of the cold end nozzle to the air velocity at the outlet of the nozzle of the boost chamber.

The drawing shows the installation, General view.

The installation comprises: a vortex tube 1, a finned hot end 2 located in the housing 3, in which openings 4 for the passage of cooling air are made on one side, and an ejector 5 connected to the pipe 6 of the control valve 7 is installed on the opposite side in the wall of the housing 3 mounted on a hot end 2. To the pipe 8 of the control valve 7 outside the casing 3, a finned duct 9 is connected to pass a hot air stream, on which an ejector 10 is mounted connected by the duct 11 to the boost chamber 12, located on the pipe of the cold end 13 of the vortex tube 1 with the formation of an annular gap 14.

Compressed air purified from mechanical impurities from a turbocharger through a pipeline (not shown) enters the vortex tube 1, where it is divided into warm and cold flows. The cooled stream exits through the nozzle of the cold end 13 of the vortex tube 1 and is fed into the room.

The heated air stream passes through the finned hot end 2 to the control valve 7 mounted on it, where the stream is separated. One part of the heated stream enters through the nozzle 6 into the ejector 5 mixing chamber located in the wall of the housing 3, ejecting outside air, which enters through the openings 4 opposite the holes made in the housing 3 and cools the finned hot end 2 of the vortex tube 1. The other part of the heated air stream exits through the pipe 8 into the finned duct 9 located outside the housing 3, it is partially cooled and enters the mixing chamber of the ejector 10, mixed with the outside air and exits through the annular gap 14 of the boost chamber 12.

As a result, an annular cross-section jet is formed around the main stream of cold air with a temperature approaching the temperature of the outside air, thereby increasing the range of the main cooling stream, and the ring stream prevents mixing of the cooled stream with the outside air.

The area of the annular gap 14 is selected so that the amount of motion in the annular stream is not less than the amount of motion of the main stream exiting the nozzle of the cold end 13.

We can write

UViu LnVn, (1)

where, Ln - respectively, the air flow through the slot and the cold end pipe;

Viq, Vn - air velocity in the slot and in the cold end pipe, respectively. 5 Considering that 1SCH UCHRSCHCH; Ln VnFn, a

Rsch / 4 (D2 - d2), Fn

lgsg

where Rsch, Pn are the areas of the slit 14 and the nozzle 13, respectively,

D, d are the diameters, respectively, of the nozzle of the boost chamber 12 and the pipe of the cold end 13, we obtain

AND

f (tf-d2).

(2)

20 It follows that the diameter of the nozzle 4 of the boost chamber is selected from the following relation

25

D d 1 + K2,

Pack v

u

air speed ratio

0

0

5

0

5

at the outlet of the cold end pipe. to the air speed at the outlet of the nozzle of the boost chamber.

By adjusting the valve 7, it is possible to vary the amount of heated air entering the mixing ejector 10, as well as the temperature and amount of air entering the pressurization chamber 12, and accordingly the aerodynamic characteristics of the air flow.

The present invention, compared with the prototype, allows, by using a combination of the effect, to increase the range of the jet and to regulate the aerodynamic and temperature characteristics of the cooled air stream entering the consumer.

Claims (1)

The claims An air conditioning installation comprising a vortex tube with an adjustable valve at its hot end, hot and cold flow lines connected to the respective ends of the vortex tube, and a heat exchanger, the adjustable valve being in communication with the atmosphere and the heat exchanger, and the cold end of the vortex tube with a consumer, characterized in that, in order to improve the aerodynamic characteristics of the air flow, the installation further comprises a cooling chamber with opposed openings and an ejector, for additionally ejector and pressurization chamber, the hot end of the vortex tube and the finned formed together with adjustable valve located in the cooling chamber, the heat exchanger is designed as a ribbed duct and communicated through an additional ejector with a boost chamber, the cold end of the vortex tube is communicated with the consumer through the latter, and an adjustable valve with the atmosphere through the ejector of the cooling chamber.