FI60776C - KOMBINERAD SPRIDARE FOER INLOPPS- OCH UTLOPPSLUFT - Google Patents

Description

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Patent- och registerstyrelsen v Anaökan utiagd och uti.ikriftcn publicarad 30.li.8l (32) (33) (31) Pyy4a «y privilege— Bogird priority (Tl) Oy Taloaines Ab, Lönnrotinkatu 21, 00120 Helsinki 12, Finland-Finland (Fl) (T2) Christer Grönlund, Helsinki, Leo Santala, Helsinki, Finland -Finland (FI) (7U) Leitzinger Oy (5U) Combined supply and exhaust air diffuser - Combined spridare för inlopps- och utloppsluft

The invention relates to a combined supply and exhaust air diffuser, in which there is an exhaust air cone inside the supply air distribution box, whereby the supply air is arranged to be blown into the room through a distribution box surrounding the exhaust air opening.

A modern air conditioner often requires the ability to provide efficient cooling. Cold supply air and warm extract air must therefore be effectively separated. Hitherto known combined supply and exhaust air diffusers do not have any thermal insulation between the supply and exhaust air. For this reason, there is a considerable amount of heat transfer between the supply and exhaust air, which affects the efficiency of the air conditioner in cooling the room air.

To overcome this drawback, the combined supply and exhaust air diffuser according to the invention is characterized in that the wall of the exhaust air chamber bordering the distribution box is thermally insulated. Thermal insulation around the exhaust chamber allows a large temperature difference between the supply and exhaust air, which allows the supply air to be cooled and the exhaust air to be directed to heat recovery. Exhaust valves designed for high pressure drop suitable for other air conditioning systems can be used as the exhaust system.

In the following, the invention will be described in more detail with reference to the accompanying drawing, in which Fig. 1 shows a combined supply and exhaust air diffuser according to the invention in vertical section and Fig. 2 shows the same seen from above.

The part forming the supply air diffuser is denoted by reference numeral 1 and has a perforated lower surface 7 and side slots 8 through which the total inflow of air takes place mainly in the horizontal outlet direction. Reference numeral 2 denotes an exhaust valve which closes the outlet 9. In order to effectively separate and insulate the supply and exhaust air, a cylindrical, thermally insulated exhaust air chamber 4 is arranged inside the rectangular, thermally insulated supply air distribution box 3. The other end of the exhaust air chamber 4 the exhaust air connection pipe 6 passed through is connected to the exhaust air chamber 4 and provided with a control damper 10 which is adjustable through the perforated part 7. Connected to the opposite side of the connection pipe 6 to the distribution box 3 is a supply air connection pipe 5, which is also provided with a control damper 11, which is adjustable through the perforated part 7. The connecting pipe 5 also has a flow equalizer 12.

As can be seen from the drawing, the connecting pipes 5 and 6 are axially extending from each other and separated from each other by a cylindrical exhaust air chamber 4 perpendicular to them.