CN205747373U - A kind of high efficiency wind is from smoke exhaust and ventilation cap - Google Patents

Abstract

This utility model relates to a kind of high efficiency wind from smoke exhaust and ventilation cap, it is the structure of cavity including the inside being made up of upper cover, lower cover and sidewall, the cross section of structure is water-drop-shaped, there is streamlined contour, offering rectangular exhaust outlet at sidewall rear portion i.e. maximum curvature radius, structure front portion is provided with empennage, and construction inner is provided with rotary apparatus, rotary apparatus includes rotary shaft, lower carriage and upper bracket, and structure is rotationally connected with exhaust gases from building pipeline by rotary apparatus.The beneficial effects of the utility model are: be skillfully constructed, simple in construction, utilize natural wind energy to greatest extent, utilize Coanda effect to realize natural wind at exhaust outlet, form low pressure or negative pressure, thus produce draft, being extracted out by air in exhaust duct, device, the most just to Laifeng County, improves the ventilation efficiency of exhaust duct to utilize empennage to ensure, without additional energy source, draft at the extraneous the biggest exhaust outlet of wind-force is the biggest, convulsion ability is higher, it is to avoid pour in down a chimney phenomenon.

Description

A kind of high efficiency wind is from smoke exhaust and ventilation cap

Technical field

This utility model belongs to air draft smoke extractor, is specifically related to a kind of high efficiency wind from smoke exhaust and ventilation cap.

Background technology

Ventilate, be a kind of means improving indoor air environment, along with improving constantly of living standards of the people, modern science and technology Development, people have had further insight and requirement for the air quality depended on for existence, and ventilation system for buildings plays The most important effect, but the efficiency how being effectively improved air draft smoke evacuation is always a hang-up, and subject matter just exists Relatively big in exhaust duct terminal pressure, even it is susceptible to the phenomenon that gas passes through.The major way improving ventilation efficiency at present has The most several:

1. install blower fan additional；

The most rationally improve pipe-line system, reduce pipeline crushing；

3. carry out systematic air flow balance, retain surplus to end；

4. use Ventilating wall.

But the limitation of these modes is the biggest, dependence and consumption to the energy are the biggest, how can need not energy In the case of source, constantly improve ventilation efficiency avoiding pours in down a chimney the trend that phenomenon is future development is also to be badly in need of now The problem solved.

Summary of the invention

In order to solve the problems referred to above that prior art exists, this utility model provides a kind of high efficiency wind from smoke exhaust and ventilation Cap, on the premise of not consuming additional energy source, utilizes wind energy greatly, improves the ventilation efficiency of ventilation duct, and will not Occur that gas pours in down a chimney phenomenon.

The technical scheme that this utility model is used is: a kind of high efficiency wind is from smoke exhaust and ventilation cap, including by upper cover, lower cover With the structure that inside is cavity of sidewall composition, the cross section of described structure is water-drop-shaped, including little head and enlarged head, Described upper cover and described lower cover be arranged in parallel, and described upper cover is paralleled with horizontal plane, described under cover and be provided with for building The air port that thing exhaust duct passes, the described sidewall of described enlarged head is provided with exhaust outlet, is provided with rotation in described structure Rotary device, described structure is rotationally connected with described constructure ventilation pipeline by described rotary apparatus.

Further, the quantity of described exhaust outlet is two, two described exhaust outlets be separately positioned on described left side wall and On described right side wall, described exhaust outlet is rectangle structure, and axial and the perpendicular setting of described lower cover, the institute of described exhaust outlet Stating exhaust outlet and be positioned at the radius of curvature maximum of described sidewall, natural wind reaches maximum wind velocity at described exhaust outlet, because wind The biggest blast of speed is the lowest, produces so forming low pressure or negative pressure natural wind, described low pressure or negative pressure natural wind at described exhaust outlet The strongest raw thrust outwards extracts the gas in building out discharge.

Further, the diameter in described air port is more than the diameter of described exhaust gases from building pipeline.

Further, described rotary apparatus include rotary shaft, lower carriage and upper bracket, described upper bracket be arranged on described under Between support and described lower cover, the upper end of described rotary shaft is fixing with described upper cover to be connected, and the lower end of described rotary shaft passes institute It is set in after stating upper bracket on described lower carriage, between described lower carriage and described rotary shaft, is provided with bearing.By described rotation Rotating shaft can make described high efficiency wind cover on from smoke exhaust and ventilation to rotate freely on exhaust gases from building pipeline.

Further, described upper bracket and described lower carriage are provided with the supporting leg of three circle distribution, all of institute State that supporting leg and exhaust gases from building pipeline are fixing to be connected.

Further, described structure front end is provided with empennage, and described empennage is as wind vane, when wind is by described tail The wing, wind can be automatically separated into two strands of air-flows, flow backward along described left side wall and described right side wall respectively.

The beneficial effects of the utility model are:

1, this utility model uses water droplet streamlined structure, is greatly reduced windage, and utilizes lobe to expand as wind shoulder Area of low pressure, natural wind accelerates in blast cap convex surfaces, and exhaust outlet is offered in the position maximum at wind speed, is greatly improved air draft effect Rate.

2, this utility model uses wind vane empennage guarantee device the most just to wind direction so that the wind speed of apparatus surface is all the time Keep at a high speed, thus realize continuing high efficiency exhaustion.

3, this utility model structural framing is ingenious, simple in construction, with low cost, easy for installation, air draft efficient, and embodying can The theory of sustainable development.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is this utility model partial sectional view；

Fig. 3 is the upward view of Fig. 1.

In figure: 1, upper cover；2, empennage；3, exhaust outlet；4, sidewall；5, lower cover；6, exhaust gases from building pipeline；7, supporting leg；8、 Rotary shaft；9, air port, 10, lower carriage；11, upper bracket；12, bearing.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearer, below will be to technology of the present utility model Scheme is described in detail.Obviously, described embodiment is only a part of embodiment of this utility model rather than complete The embodiment in portion.Based on the embodiment in this utility model, those of ordinary skill in the art are not making creative work Other embodiments all obtained by under premise, broadly fall into the scope that this utility model is protected.

In describing below, the word front, back, left, right, up, down of use refers to the direction in accompanying drawing 1, inside and outside point of word Do not refer to the direction toward and away from particular elements geometric center.

As shown in Figure 1, Figure 2 and Figure 3, this utility model provides a kind of high efficiency wind from smoke exhaust and ventilation cover, including upper cover 1, lower cover 5 and the structure that inside is cavity of sidewall 4 composition, the cross section of structure is water-drop-shaped, including little head a with big Head b, structure front cavity is narrow, structure rear cavity width, and structure front portion is provided with wind vane empennage 2.Upper cover 1 and under Lid 5 be arranged in parallel, and upper cover 1 is paralleled with horizontal plane, and lower cover 5 is provided with the air port passed for exhaust gases from building pipeline 6 9, sidewall 4 includes left side wall and right side wall, and sidewall 4 cross-section curve shape is consistent with the contour line of upper cover 1.Left side wall rear portion is i.e. Rectangular exhaust outlet 3, and exhaust outlet 3 is all offered at maximum curvature radius and at right side wall rear portion i.e. maximum curvature radius Put symmetrical, the axial and perpendicular setting of lower cover 5 of exhaust outlet 3.Air port 9 diameter is more than exhaust gases from building pipeline 6 diameter.Knot Being provided with rotary apparatus in structure body, structure is rotationally connected with exhaust gases from building pipeline 6 by rotary apparatus, and rotary apparatus includes Rotary shaft 8, lower carriage 10 and upper bracket 11, upper bracket 11 is arranged between lower carriage 10 and lower cover 5, the upper end of rotary shaft 8 with Upper cover 1 is fixing to be connected, and the lower end of rotary shaft 8 is set on upper bracket 10 after upper bracket 11, and upper bracket 10 leads to rotary shaft 8 Cross bearing to connect.The supporting leg 7 of three circle distribution, all of supporting leg 7 and building it is provided with on lower carriage 10 and upper bracket 11 Thing exhaust duct 6 is fixing to be connected.

Embodiment: what this device utilized is Coanda effect, i.e. fluid have to be left original flow direction and changes into along with convex The tendency of the material flows gone out.When fluid flows through the convex surface of object, due to the stickiness effect of fluid, streamline can be along object table Surface current is dynamic and changes original shape, makes to create on fluid curvature, restrains according to flow curvature law, along body surface The place of flowing creates low pressure, and described device profile uses the shape of similar water droplet, and by being arranged in structure Rotary shaft 8 can make this device according to the free translation-angle of wind direction as weathercock, it is achieved the maximum utilization to wind.At sidewall 4 Maximum curvature radius at i.e. contour structures salient position exhaust outlet 3 is set, minimum at the local blast protruded most or be negative Pressure, can effectively solve the problem that exhaust gases from building pipeline 6 terminal pressure causes relatively greatly gas discharge smooth or gas pours in down a chimney, and Produce the strongest thrust to be discharged by the gas in building.Structure front portion is provided with empennage 2, and natural wind passes through empennage 2 Time, two strands of air-flows can be divided into and flow through from structure both sides, two sidewind mean time empennages 2 are gripped in the middle of two strands of air-flows keep Motionless, once empennage 2 has deflection can be blown rotation by opposite side air-flow, so the effect of empennage 2 is to remain that device is the most right The wind comes from direction, it is ensured that at device exhaust outlet 3, wind speed is maximum.

The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change Or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be described with power The protection domain that profit requires is as the criterion.

Claims (6)

1. a high efficiency wind is from smoke exhaust and ventilation cap, it is characterised in that: include being made up of upper cover (1), lower cover (5) and sidewall (4) The structure that inside is cavity, the cross section of described structure is water-drop-shaped, including little head (a) and enlarged head (b), described Upper cover (1) and described lower cover (5) be arranged in parallel, and described upper cover (1) is paralleled with horizontal plane, and described lower cover is provided with on (5) For the air port (9) that exhaust gases from building pipeline (6) passes, the described sidewall of described enlarged head (b) is provided with exhaust outlet (3), Being provided with rotary apparatus on described structure, described structure is by described rotary apparatus and described exhaust gases from building pipeline (6) It is rotationally connected.

High efficiency wind the most according to claim 1 is from smoke exhaust and ventilation cap, it is characterised in that: described exhaust outlet (3) quantity has Two, two described exhaust outlets (3) are separately positioned on left side wall and right side wall, and described exhaust outlet is rectangle structure, and institute State the axial of exhaust outlet (3) and described lower cover (5) perpendicular setting.

High efficiency wind the most according to claim 2 is from smoke exhaust and ventilation cap, it is characterised in that: the diameter of described air port (9) is big Diameter in described exhaust gases from building pipeline (6).

High efficiency wind the most according to claim 3 is from smoke exhaust and ventilation cap, it is characterised in that: described rotary apparatus includes rotating Axle (8), lower carriage (10) and upper bracket (11), described upper bracket (11) is arranged on described lower carriage (10) and described lower cover (5) Between, the upper end of described rotary shaft (8) is fixing with described upper cover (1) to be connected, and the lower end of described rotary shaft (8) is through described upper It is set in after frame (11) on described lower carriage (10), between described lower carriage (10) and described rotary shaft (8), is provided with bearing (12)。

High efficiency wind the most according to claim 4 is from smoke exhaust and ventilation cap, it is characterised in that: described upper bracket (11) and described Be provided with the supporting leg (7) of three circle distribution on lower carriage (10), all of described supporting leg (7) all with described exhaust gases from building Pipeline (6) is fixing to be connected.

High efficiency wind the most according to claim 5 is from smoke exhaust and ventilation cap, it is characterised in that: described structure front end is provided with Empennage (2).