SU1307171A1 - Air distributor - Google Patents

Abstract

The invention relates to a technique of ventilation and can be used in low spaces, in moving objects, as well as for supplying fresh air (DF) directly into the working area of a room with heat excess. The purpose of the invention is to automatically expand the range of the airflow while increasing the consumption of PV. The reflector 5 is installed on the source 4 with the possibility of reciprocating movement under the action of air flow. The shell 6, located in the housing 1, is rigidly connected to the reflector 5. The side windows 7 of the housing 1 overlap the shell 6. When the flow rate increases, the reflector 5 moves out of the housing 1 and the compact jet transforms into a conical jet. At the same time, windows 7 open and part of the air flow enters the room in the form of a fan jet. When the flow rate of the air flow changes, the mobility of the air in the working area is kept constant. 2 Il. er f (L so o m IV „.. / h

Description

The invention relates to ventilation and can be used for rooms with low height, in moving objects, as well as for supplying fresh air directly into the working area of a room with heat excess.

The purpose of the invention is the automatic expansion of the blowing range with increasing air flow.

FIG. 1 shows a schematic of the longitudinal profile of the air distributor with the minimum design flow rate of supply air passing through it in FIG. 2 — the same with the maximum flow rate of supply air.

The air distributor includes a housing 1 with inlet and outlet openings 2 and 3 placed along the axis of the housing, a rod 4 and mounted on it with the possibility of reciprocating movement under the action of air flow Reflector 5. The air distributor additionally contains a shell 6 located in the housing 1 connected with the reflector 5, and the housing 1 is provided with lateral outlets, windows 7, overlapped by the shell 6. The reflector 5 is spring-loaded relative to the stem 4 by the spring 8, and the housing 1 is equipped with a nozzle 9.

The air distributor operates as follows.

The supply air passes through the pipe 9 into the housing 1, flows around the reflector 5 located in the housing 1 and enters the room (not shown) with a compact stream. At the same time, the supply of fresh air into the working area of the room in the form of a compact jet, directed from top to bottom, is most effective for maintaining the permissible speed and temperature of the air in the working area.

With an increase in the flow rate of supply air passing through the air distributor, the dynamic pressure of the air flow to the reflector 5 increases, under the action of which it moves along the rod 4 and moves out of the housing 1, as a result of which the compact air jet transforms into a conical jet.

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Together with the reflector 5, the shell 6 moves downward, while the lateral exhaust ports 7 open and a part of the excess air flows into the room in the form of a fan jet.

Thus, an increase in the supply air flow does not lead to an increase in the mobility of the air environment in the working zone, since the conical jet, compared with the compact one, has a much greater ejection capacity and, consequently, a greater degree of attenuation.

When the supply air flow decreases, the dynamic pressure of the air flow to the reflector 5 decreases, under the action of which the spring 8 compresses and the reflector 5 moves along the rod 4 and returns to the housing 1, and the shell 6 consequently closes the side exhaust ports 7. The supply air is again supplied into the working area with a compact jet.

Self-regulation of the degree of attenuation of the supply air jet and self-transformation of one type of jet into another makes it possible to maintain a constant value of the mobility of the air environment in the working area when the flow rate of supply air passing through the air distributor changes, and therefore J provides comfortable conditions in the working area of the ventilated room.

Claims (1)

Invention Formula An air distributor, comprising a housing with inlet and outlet openings, a rod mounted along the axis of the housing and mounted on it with the possibility of reciprocating movement under the action of air flow, a reflector that in order to automatically expand the range of the airflow as the air flow increases The air distributor further comprises a shell located in the housing, rigidly connected to the reflector, and the housing is provided with side outlets, which are covered by the shell. FIG. Editor In, Kovtun Compiled by V. Sosnovska Tehred A. Kravchuk Proofreader S. Shekmar Order 1613/34, Circulation 660 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4