RU181122U1 - AIR INTAKE - Google Patents

Abstract

According to the proposed solution, the air intake device comprises a housing that has a skirt part covering the air intake pipe to protect it from weather conditions. The wall of the skirt part contains a ventilation channel that extends from the outer hole made in the outer surface of the wall to the inner hole made in the inner surface of the wall to allow air to enter from outside the housing into the intake pipe inside the housing. The ventilation channel is made at an angle to the normal of the skirt so that the outer opening of the ventilation channel is lower than the inner hole.

Description

FIELD OF TECHNOLOGY

[0001] This utility model relates to ventilation systems. In particular, the present utility model relates to air intakes for compensation air systems. More specifically, the present utility model relates to an air intake device according to the preamble of paragraph 1 of the attached utility model formula.

BACKGROUND

[0002] Air intake devices are widely used in the construction industry to supply compensation air to the ventilation system. The intake device is a protective device located at the end of the compensation air pipe, which connects the compensation air pipe to the external environment and prevents rain, snow, volatile debris, animals and other external factors from entering the ventilation system. When designing air intake devices, considerable attention is paid to protecting the pipe for compensation air from the above external factors so as not to jeopardize the operation of the ventilation system by restricting the air flow. Therefore, the ventilation openings in the air intake devices are usually short through holes that are made at right angles to the side of the housing of the air intake devices. The number of openings is usually chosen to be large so that air can flow as freely as possible. A typical example of ventilation openings is a grill. However, it was found that when using the grille, insufficient separation was ensured, since in windy weather, rain could fall through the grill into the pipe for compensating air and from there penetrate the ventilation system.

[0003] The objective of this utility model is to provide an air intake device that protects the pipe for compensation air as much as possible, but without increasing flow resistance.

DISCLOSURE OF THE ESSENCE OF A USEFUL MODEL

[0004] In the presented solution, the air intake device comprises a housing in which there is a skirt part covering the air intake pipe to protect it from weather conditions. The wall of the skirt part contains one or more ventilation ducts that extend from the outer hole made in the outer surface of the wall to the inner hole made in the inner surface of the wall to allow air from outside the housing to enter the intake pipe inside the housing. The ventilation channel is made at an angle to the normal to the skirt so that the outer opening of the ventilation channel is lower than the inner hole.

[0005] In particular, the present utility model is distinguished by the features presented in the characterizing part of paragraph 1 of the utility model formula.

[0006] A device according to the present utility model provides significant advantages. Thanks to the inclined ventilation duct, improved water separation is achieved, since the air flow in the ventilation duct includes a vertical component that impedes the flow of water into the housing.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Some embodiments are described in more detail below with reference to the accompanying drawings, in which:

In FIG. 1 shows a perspective top view of an air intake device according to one embodiment;

in FIG. 2 shows a side view of the air intake device shown in FIG. one;

in FIG. 3 shows a section along line AA of the air intake device shown in FIG. 2; and

in FIG. 4 shows a perspective bottom view of the air intake device shown in FIG. one.

IMPLEMENTATION OF A USEFUL MODEL

[0008] As shown in FIG. 1-4, the intake device 1 according to one embodiment comprises a substantially enclosed structure in which a housing 100 mounted on the upper part of the frame 200 covers the intake pipe 300 to protect it from weather conditions and other external factors such as debris and small animals . According to the embodiment shown in the drawing, the body 100 is generally cylindrical, its upper part is round, and the skirt part 110 extends downward. In the lower part of the housing 100, a shaped joint is provided for connection with the frame 200. According to another embodiment of the present utility model, fastening shaped parts may be located in the lower part of the housing 100 for attaching the air intake device 1 to the receiving structure, such as a ventilation pipe at the base of the building . In the example shown in the drawing, the frame 200 is configured to act as a boundary surface between the air intake device 1 and the receiving structure.

[0009] A plurality of ventilation ducts 121 are provided in the skirt portion 110 of the housing 100 to allow air to enter outside the housing 100 into the intake pipe 300 within the housing 100. Although this function can be implemented using only one sufficiently large ventilation duct (not shown), which can extend around the annular body 100, it is preferable to equip the air intake device 1 with a plurality of reduced ventilation ducts so that the skirt part 110 of the housing 10 0 could be made durable. Ventilation channels, in particular, are located in the skirt part 110 by equipping the walls of the skirt part 110 with deflectors 120.

[0010] According to the embodiment shown in the drawing, the deflectors 120 comprise a group of ventilation ducts 121 that are bounded by outer and inner openings 122, 123 formed in the skirt part 110 of the body 100 and deflected in the vertical direction, as well as channel surfaces 124 connecting these openings under tilt. In practice, the edges of the outer and inner openings 122, 123 are formed into a deflector 120, which protrudes outward and outward from the wall of the skirt 110 to increase the length of the ventilation ducts so that the intake pipe 300 is better protected from the weather. The length of the ventilation ducts can also be equal to the thickness of the wall of the housing. The deflector 120, increasing the thickness of the wall, can be embedded in the wall, for example, by injection molding or pressing the body to form an integral part, or the deflector 120 may be a valve separately attached to the wall (not shown).

[0011] As indicated above, the ventilation ducts 121 are oblique to the skirt portion 110. In particular, the ventilation ducts 121 extend obliquely to the normal of the skirt portion 110 so that the outer opening 122 of the ventilation duct 121 is lower than the inner opening 123, when observing the air intake device 1 installed in a vertical position. An improved water separating property is achieved by tilting the ventilation duct 121, since the air flow in the ventilation duct 121 includes a vertical component that prevents water from flowing into the housing 100 along the duct surfaces 124 that are oriented upwardly. As further shown in FIG. 1-4, the deflector 120 comprises a group of ventilation ducts 121 arranged one above the other. The ventilation ducts 121, located one above the other, are arranged so that the upper hole 122 of each upper ventilation duct 121 is located closer to the center of the air intake device than the outer hole 122 of each lower ventilation duct 121, so that the deflector 120 expands downward when observing the air intake device 1 mounted upright.

[0012] FIG. 3 shows particularly well how the intake pipe 300 is oriented outwardly from the hollow frame 200 and opens like a bell. In particular, said intake pipe 300 is profiled openable so that the inner diameter of the intake pipe 300 is reduced in the direction of flow to ensure laminar air flow. The housing 100 is also connected to the frame 200 in such a way that the intake pipe 300 is surrounded by the housing 100. Also, the frame 200 and the intake pipe 300 can be integrally formed, in which case the housing 100 can be connected directly to the intake pipe 300 to cover its opening the neck.

LIST OF REFERENCE NUMBERS

one Air intake device one hundred Housing 110 Skirt 120 Deflector 121 Ventilation duct 122 Outer hole 123 Inner hole 124 Channel surface 200 Frame 300 Intake pipe

Claims (6)

1. An air intake device (1) for supplying compensation air to a building ventilation system comprising an air intake pipe (300) and a housing (100) that includes a skirt part (110) configured to cover the air intake pipe (300) to protect it from weather conditions, and the wall of the skirt part (110) contains one ventilation duct (121), which extends from the outer hole (122) made in the outer surface of the wall to the inner hole (123) made in the inner surface of the wall to provide access to air outside the housing (100) into the intake pipe (300) inside the housing (100), characterized in that the ventilation duct (121) is made at an angle to the normal of the skirt part (110) so that the outer hole (122) of the ventilation duct (121) ) is located lower than the inner hole (123). 2. An air intake device (1) according to claim 1, further characterized in that it comprises a plurality of said ventilation ducts (121). 3. The air intake device (1) according to claim 1 or 2, further characterized in that the wall of the skirt part (110) comprises a deflector (120) that contains a ventilation duct or channels (121), the deflector (120) being protruding outward or inward or in both directions from the wall as compared to the wall part surrounding the deflector (120) to increase the length of the ventilation duct or ducts (121). 4. The air intake device (1) according to claim 3, further characterized in that it comprises a plurality of ventilation ducts (121) located on top of each other, said ventilation ducts located on top of each other being arranged so that the outer opening (122) of each upper the ventilation duct (121) is closer to the center of the air intake device (1) than the outer hole of each lower ventilation duct, with the deflector (120) expanding downward. 5. The air intake device (1) according to any one of the preceding paragraphs, further characterized in that the outer hole (122) of the ventilation duct (121) is lower than the inner hole (123) when the air intake device (1) is in a vertical installed position. 6. An air intake device (1) according to any one of the preceding claims, further characterized in that the air intake pipe (300) is profiled for opening so that the inner diameter of the air intake pipe (300) is reduced in the direction of flow to ensure laminar air flow.

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