Outdoor windproof structure for fresh air fan pipeline

Abstract

The invention provides an outdoor windproof structure for a fresh air fan duct, including a hood installed at the outdoor end pipe mouth of the fresh air fan duct, and a windproof seat sleeved on the outdoor end pipe mouth; the hood includes an inner hood body and an outer hood body, the inner hood body and the outer hood body are coaxially arranged, and the two are connected by a support plate; the support plate is perpendicular to the axial direction of the inner hood body; a wind passage is formed between the first windproof bending part and the second windproof bending part. The invention has a reasonable structural design, and the wind passage formed between the first windproof bending part and the second windproof bending part can ensure smooth exchange of indoor and outdoor air, and even the wind blowing toward the hood will not easily return to the hood and then pour into the pipe mouth, thereby maximizing the windproof ability.

Description

Technical Field

[0001] The invention belongs to the technical field of fresh air equipment, and in particular relates to an outdoor windproof structure for a fresh air fan pipeline. Background Art

[0002] The fresh air fan is an effective air purification device. It can sterilize, disinfect, filter and other indoor air, and can also introduce outdoor air into the room to achieve air convection and replace fresh air into the room. However, the external port of the fresh air fan pipeline is usually located outdoors. Since the pipeline opening is directly exposed to the outside of the wall, rainwater will flow down the wall on rainy days and enter the pipeline opening. In addition, the wind direction and rain direction are uncertain. Even if the pipeline opening is arranged obliquely or in a directional direction, there is still a situation of "wind filling" inward. Although there is a structural form of using a hood in the prior art, installing a hood at the pipeline opening can block the front wind direction or rain and snow, but when the wind direction changes or the rain and snow caught in the wind blow on the outer wall and then return to the hood, there is still a possibility of entering the fresh air fan pipeline. The existing hood can usually only play a positive "interception" role, and the wind still has the situation of pouring into the pipeline along the wall. Therefore, it is necessary to further improve the hood structure. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes an outdoor windproof structure for a fresh air fan duct.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] An outdoor windproof structure for a fresh air fan pipeline comprises a wind cap installed at an outdoor end pipe opening of the fresh air fan pipeline, and a windproof seat sleeved on the outdoor end pipe opening;

[0006] The hood comprises an inner hood body and an outer hood body, the inner hood body and the outer hood body are coaxially arranged and connected by a support plate; the support plate is perpendicular to the axial direction of the inner hood body;

[0007] The inner wind cap body comprises an end cap and a windproof ring at its rear end, a fixing ring is arranged inside the windproof ring; the windproof ring and the fixing ring are connected by a windproof plate, and a plurality of wind holes are arranged on the windproof plate; an opening is arranged at the conical end of the outer wind cap body;

[0008] The side of the windproof ring facing the windproof seat is provided with a first windproof bending portion that is rolled up to a side different from the windproof seat; the side of the windproof seat facing the windproof ring is provided with a second windproof bending portion that is rolled up to a side different from the windproof ring; a wind passage is formed between the first windproof bending portion and the second windproof bending portion.

[0009] Furthermore, the fixing ring is fixed to the pipe opening at the outdoor end of the fresh air fan duct by gluing or by a connecting piece.

[0010] Furthermore, the connecting piece is a screw or a pipe clamp.

[0011] Furthermore, the end cap is in a conical cylindrical structure, with a closed end on the outside and an inner opening facing the outdoor end of the fresh air fan duct.

[0012] Furthermore, the end of the outer hood facing the cavity is provided with a curled edge folded outwards.

[0013] Furthermore, the cross-sectional area of ​​the air passage is 0.5-1.1 times the cross-sectional area of ​​the fresh air fan duct.

[0014] Furthermore, the sum of the cross-sectional areas of the air holes on the wind shield is 0.5-1.1 times the cross-sectional area of ​​the fresh air fan pipeline.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The invention has a reasonable structural design. The wind passage formed between the first windproof bending portion and the second windproof bending portion can ensure smooth exchange of indoor and outdoor air, while avoiding the possibility of "wind filling" at the pipe mouth as much as possible. Even if the wind blows towards the hood, it will not easily return to the hood and then fill into the pipe mouth, thereby maximizing the windproof ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure created by the present invention;

[0019] Figure 2 A schematic diagram of the structure of the stroke cap in the invention;

[0020] Figure 3 This is a schematic diagram of an embodiment of the present invention in which the inner hood body is provided with a curled edge.

[0021] Description of reference numerals:

[0022] 1- pipe opening; 2- inner hood body; 3- outer hood body; 4- support plate; 5- end cap; 6- windproof ring; 7- fixing ring; 8- windproof plate; 9- opening; 10- first windproof bending part; 11- second windproof bending part; 12- wind passage; 13- curling edge. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] A new outdoor windproof structure for a fan duct, such as Figures 1 to 3 As shown, it includes a hood installed at the outdoor end pipe opening 1 of the fresh air fan pipeline, and a windproof seat mounted on the outdoor end pipe opening;

[0028] The hood comprises an inner hood body 2 and an outer hood body 3, the inner hood body and the outer hood body are coaxially arranged and connected by a support plate 4; the support plate is perpendicular to the axial direction of the inner hood body; in the invention, the support plate is a closed plate-like structure.

[0029] The inner wind cap body comprises an end cap 5 and a windproof ring 6 at its rear end, a fixing ring 7 is provided inside the windproof ring; the windproof ring and the fixing ring are connected by a windproof plate 8, and a plurality of wind holes are provided on the windproof plate; an opening 9 is provided at the conical end of the outer wind cap body;

[0030] In an optional embodiment, the side of the windproof ring facing the windproof seat is provided with a first windproof bending portion 10 that is rolled up to a side different from the windproof seat; the side of the windproof seat facing the windproof ring is provided with a second windproof bending portion 11 that is rolled up to a side different from the windproof ring; and a wind passage 12 is formed between the first windproof bending portion and the second windproof bending portion. Such a structural design ensures that even if part of the airflow is turned back to the inside of the hood along the wall, it will be blocked by the windproof bending portion, and it will be avoided to blow into the pipe opening to the greatest extent, and the air discharged from the pipe opening will be discharged smoothly without any influence.

[0031] The fixing ring is fixed to the pipe opening at the outdoor end of the fresh air fan duct by gluing or by a connecting piece. Usually, the connecting piece is a screw or a pipe clamp.

[0032] In an optional embodiment, the end cap is a conical structure, with a closed end on the outside and an inner opening facing the outdoor end of the fresh air fan duct, which can minimize the possibility of wind blowing into the duct. Usually, in order to ensure that the fresh air fan duct has a suitable air intake, the cross-sectional area of ​​the above-mentioned air passage is generally 0.5-1.1 times the cross-sectional area of ​​the fresh air fan duct. The sum of the cross-sectional areas of the air holes on the wind shield is generally 0.5-1.1 times the cross-sectional area of ​​the fresh air fan duct.

[0033] When the wind blows onto the hood, the wind volume within a certain range (approximately the surface area of ​​the hood) will be concentrated and gathered, and there is a tendency to blow directly along the hood surface toward the wall. In an optional embodiment, the end of the outer hood facing the cavity is provided with an outwardly folded edge 13. The wind blowing from the outside toward the pipe opening will blow outwards instead of directly blowing toward the wall surface, minimizing the possibility of wind returning to the hood.

[0034] It should be noted that an opening is provided at the conical end of the outer hood body. A part of the wind blowing toward the hood part blows along the outer wall of the hood (in the above embodiment, this part of the wind is blocked by the curling edge 15 and blows toward the outside), while the other part of the wind blows into between the outer hood body and the inner hood body, but is blocked outside the inner hood body by the support plate.

[0035] The reason for designing the inner and outer hood bodies is to further weaken the situation where the wind force is concentrated on the outer wall of the hood and blows directly to one side of the wall. This is equivalent to dispersing the wind force on the ordinary hood. The force on the hood structure is dispersed and the stability will not be affected. The effect achieved is to avoid wind entering the pipe mouth to the greatest extent.

[0036] The invention has a reasonable structural design. The wind passage formed between the first windproof bending portion and the second windproof bending portion can ensure smooth exchange of indoor and outdoor air, while avoiding the possibility of "wind filling" at the pipe mouth as much as possible. Even if the wind blows towards the hood, it will not easily return to the hood and then fill into the pipe mouth, thereby maximizing the windproof ability.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An outdoor windproof structure for a fresh air fan duct, characterized in that: It includes a hood installed at the outdoor end of the fresh air fan pipe and a windproof seat mounted on the outdoor end of the pipe; The hood comprises an inner hood body and an outer hood body, the inner hood body and the outer hood body are coaxially arranged and connected by a support plate; the support plate is perpendicular to the axial direction of the inner hood body; The inner wind cap body comprises an end cap and a windproof ring at its rear end, a fixing ring is arranged inside the windproof ring; the windproof ring and the fixing ring are connected by a windproof plate, and a plurality of wind holes are arranged on the windproof plate; an opening is arranged at the conical end of the outer wind cap body; The side of the windproof ring facing the windproof seat is provided with a first windproof bending portion that is rolled up to a side different from the windproof seat; the side of the windproof seat facing the windproof ring is provided with a second windproof bending portion that is rolled up to a side different from the windproof ring; a wind passage is formed between the first windproof bending portion and the second windproof bending portion; The end cap is a conical structure with a closed end on the outside and an inner opening facing the outdoor end of the fresh air fan duct; the end of the outer wind cap body facing the cavity side is provided with an outwardly folded edge; the sum of the cross-sectional areas of the air holes on the wind shield is 0.5-1.1 times the cross-sectional area of ​​the fresh air fan duct.

2. The outdoor windproof structure for the fresh air fan duct according to claim 1 is characterized by: The fixing ring is fixed to the pipe opening part at the outdoor end of the fresh air fan pipeline by gluing or by a connecting piece.

3. The outdoor windproof structure for the fresh air fan duct according to claim 2 is characterized by: The connecting piece is a screw or a pipe clamp.

4. The outdoor windproof structure for the fresh air fan duct according to claim 1 is characterized by: The cross-sectional area of ​​the air passage is 0.5-1.1 times the cross-sectional area of ​​the fresh air fan pipeline.

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