CN88210148U

CN88210148U - Chimney cap

Info

Publication number: CN88210148U
Application number: CN 88210148
Authority: CN
Inventors: 佟树坤
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-02-09
Filing date: 1988-02-09
Publication date: 1988-08-31

Abstract

The utility model provides a civil chimney cap. An air collecting housing is arranged on the chimney, and the outer wall of the chimney is provided with a toroidal air inducing passageway. The natural air collected by the air collecting housing is made to flow into the air inducing passageway, flow upwards, be exhausted from the top and form a toroidal upward moving air stopping at the outlet of the chimney, increasing the negative pressure in the chimney, meanwhile, inhibiting the reverse direction wind. The utility model has the advantages of simple structure and low cost and can completely combust without turning back fume no matter how the wind direction or the speed of wind is.

Description

Chimney cap

The utility model relates to a kind of civilian chimney cowl.

Usually the chimney cowl that adopts has various ways, comprising umbrella shape, and threeway shape, rotatable and other various ways with the wind, the place that prevents wind from passing through, wind is to flow from the top down or oblique flow from the top down.And the flow velocity of wind is often very big, though the chimney cowl of above-mentioned various structures makes moderate progress to combustion position, reaches more greatly at wind speed under the situation of variable direction and just can not be suitable for.Therefore can not make full combustion of fuel, cause pollution to environment, and the time and have the phenomenon of anthracemia to take place, the electrically ventilating machine of minority employing now, though can reach preferably effect but want consume electric power, just can't use in case have a power failure, and the cost height, life-span is low, therefore can not extensively promote the use of.

The purpose of this utility model is to provide a kind of chimney cowl of new structure, and it can avoid returning the generation of cigarette phenomenon.Reduce the pollution of environment.

The purpose of this utility model is achieved in that it comprises air-inducing passage shell, chimney, wind gathering hoods, wind isolation board and anti-blast cap, and wind gathering hoods is made umbrella, is fixedly mounted on the outer wall of chimney.The air-inducing passage shell is contained in the chimney outside on wind gathering hoods top, between be air-inducing passage, the inlet of air-inducing passage is located at the bottom of air-inducing passage shell, wind isolation board is contained in the air-inducing passage, with this circular passage break into portions, has air vent in the bottom of wind gathering hoods.

Operation principle of the present utility model is as follows: when wind flows from the top down, collected by wind gathering hoods, some promptly enters in the air-inducing passage, upwards flow, discharge from the top with higher speed, around the chimney top, form the brattice that moves upward of annular together, increase the negative pressure of chimney on the one hand, on the other hand counter blow is played inhibition, therefore play the purpose that makes chimney not return cigarette.

The utility model is simple in structure, and cost is low, and result of use is good, can adapt to various wind directions and wind speed, and fuel is fully burned, and reduces the pollution of environment and the phenomenon of anthracemia are taken place.

Below in conjunction with drawings and Examples the utility model is explained in detail.

Fig. 1 is the structural representation of a kind of specific embodiment of the present utility model.

With reference to Fig. 1, whole chimney cowl is that sheet iron is made, and umbrella shape wind gathering hoods 6 is welded on the middle part of chimney 5, and air-inducing passage shell 3 is contained in chimney 5 outsides on wind gathering hoods 6 tops, its bottom and wind gathering hoods 6 are at a distance of the inlet of a segment distance as air-inducing passage, and the space between the chimney 5 is an air-inducing passage.Three deep beads 4 identical with the air-inducing passage width are welded in the air-inducing passage, annular air-inducing passage is divided into three parts, top at air-inducing passage shell 3 is welded with the anti-blast cap of umbrella shape by three pillars 2, has three through holes in the bottom of wind gathering hoods 6, prevents that rainwater from accumulating.

Chimney cowl of the present utility model is contained in the top of chimney, no matter wind direction and wind speed how, can make sufficient combustion, does not return cigarette.

Claims

1, a kind of chimney cowl, it comprises chimney, anti-blast cap, it is characterized in that being installed with on the chimney outer wall umbrella wind gathering hoods, the chimney outside on wind gathering hoods top is covered with the air-inducing passage shell, and its underpart has the air-inducing passage inlet, wind isolation board is housed in the air-inducing passage, and the bottom of wind gathering hoods has through hole.