DE1920812U - AIR CONDITIONING UNIT. - Google Patents

Description

P.A. 283 923 * -2.6-65

PATENT ADVOCATE

Dr. Andrejewski Essen, May 31, 1965

43Essen, KettwigerSir. 36 (2? 837 / Ni / th)

(Am Haeptbahnhof ■ üchtburg) Telephone 25802

Usage registration from Aktiebolaget Bahco, Lilla Essingen, Stockholm / - Sweden -.

Air conditioner working with air circulation.

The innovation concerns a working with air circulation Air conditioner with a pipe for the supply of primary air, which in a central for several such devices common device has been pretreated, with one or more seated on this pipe and with a Line for the flow of a heating or cooling medium connected heat exchangers with parallel heat exchanger fins, whereby the feed pipe for the primary air is practical has upwardly directed blow nozzles along its entire length, through which the primary air exits and the air surrounding the air conditioner is entrained as secondary air past the fins of the heat exchangers in order to heat them up or to cool before it reaches the outlet opening of the device via a channel.

In such air conditioners, the speed of the Primary air at the outlet of the blower nozzles must be relatively high in order to have a sufficient ejector effect on the secondary air which is to flow through the heat exchanger, to be able to exercise. Here, the flow resistance of these heat exchangers, even if they have a large front surface and have correspondingly shaped ribs, quite considerable being. This means a very strong pressure drop in the nozzles, which in itself does not, however, result in a disadvantage. On the contrary, from the point of view of distribution it is quite desirable. However, such devices work very noisy.

The elimination of this noise with undiminished high performance of such a device is the Main object of the invention proposed to solve it is to arrange a perforated partition under the ejector nozzles through which the primary air must flow, before it reaches the nozzles.

The innovation is explained in detail below with reference to the accompanying figures, it shows:

Figure 1 shows an air conditioner according to the innovation, partially in section; ".

FIG. 2 shows a nozzle block in a perspective view and on average, and

FIG. 3 shows a section of the device in section.

The device shown in Figure 1 has a tubular body

I for the supply of the primary air, which has already been pretreated in a central facility that is not shown. This collector or tubular body 1 carries at least one heat exchanger 2 with parallel heat exchanger fins, through which a line 3 for the flow of the heating or cooling medium runs. The flow of this medium is controlled by a valve 4 by means of an adjusting knob 5 as desired. The tubular body 1 for the primary air has ejector nozzles 6 which point upwards practically along its entire length, through which the primary air is blown, entraining the room air surrounding the device as secondary air, so that this secondary air flows through the fins of the heat exchanger (s) 2 and heats up or cools down before it reaches a box J and at the top of which the outlet opening 8 of the device. Such a device can, as is shown by way of example in FIG. 1, be accommodated in a window sill 9, for example.

In Figure 2 is a nozzle block 6 in perspective and shown in section «This nozzle block has individual passages 10 which extend upwards, i.e. towards the outlet rejuvenate. This nozzle block cägfe with its lower part something into the tubular body 1 and rests with a flange

II on the wall of this tubular body, as best seen Figure 3 can be seen. In this figure, however, a nozzle block with a single row of nozzles 10 is shown instead of the two rows of nozzles shown in FIG. In this pipe body 1, among these nozzle blocks, there is one continuous perforated partition in the form of a sheet metal

used, through which the primary air flows must before it gets into the channels 10. Through the interposition this partition wall 12 eddy currents on the inlet side of the Diis enb holes 10 are greatly reduced and, there such air eddies are a reason for the noise Form on the air nozzles of such devices, the operating noise is greatly reduced by the innovation.

Claim:

Claims (1)

Right to protection, Air-conditioning unit working with air circulation with a pipe for the supply of primary air, which is in a central for several such devices common device has been pretreated, with one or more on this Pipe seated and with a pipe for flow a heating or cooling medium connected heat exchangers with parallel heat exchanger fins, the feed pipe for the primary air practically along its entire length Long upward blowing nozzle ^ has through which exits the primary air and the air surrounding the air conditioner as secondary air on the fins of the heat exchanger entrains them to heat or cool them before they pass through a channel through the outlet opening of the Device achieved, characterized in that under the Ejector nozzles (6, 10) within the tubular body (l) for the supply of the device with primary air from the primary air perforated sheet metal (12) to be passed is inserted before reaching the nozzle bores (10). Patent attorney Dr, W. Andrejewski