CN2279465Y

CN2279465Y - Pneumatic scavenger fan with arc and triangular section blades

Info

Publication number: CN2279465Y
Application number: CN 96238923
Authority: CN
Inventors: 崔民秀; 朴泰业
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-29
Filing date: 1996-10-29
Publication date: 1998-04-22
Anticipated expiration: 2006-10-29

Abstract

The utility model relates to the improvement of the structure of scavenger fans. The utility model comprises a machine seat. The utility model has the essential structure that the top and the bottom of the central shaft of the machine seat are respectively provided with an upper bearing and a lower bearing. A hollow ball body composed of blades in the shape of half moons is arranged between a press cover out of the upper bearing and a bracket out of the lower bearing, and the cross section of each blade in the shape of a half moon is cambered and triangular. The utility model has the advantages that the utility model which does not need a power supply can avoid the return flow of rain into rooms, etc.

Description

The pneumatic ventilation fan of arc, triangular-section blade

The utility model relates to the improvement of ventilation fan structure.

Mostly the ventilation fan of using on the building is electric fan at present, and the vitiated air in factory building, bathing pool, the room is discharged in the ambient atmosphere.But this fan needs people's control, and noise, power consumption source are arranged, and uses inconvenience.

The purpose of this utility model is exactly at the problems referred to above, provide a kind of need not the people control, need not the pneumatic ventilation fan of power supply.

The purpose of this utility model is achieved in that the utility model comprises support, its structure outline is that the top and the bottom of the central shaft of support is respectively arranged with upper bearing (metal), lower bearing, form hollow sphere by the semilune blade between gland that upper bearing (metal) is outer and the carriage outside the lower bearing, section plane of structure of semilune blade is arc, triangle.

Major advantage of the present utility model:

1, without power supply:

Because the top and the bottom of the central shaft of support are respectively arranged with upper bearing (metal), lower bearing, form hollow sphere by the semilune blade between gland that upper bearing (metal) is outer and the carriage outside the lower bearing, the cross section of semilune blade is an arc, leg-of-mutton, even under the gentle breeze situation, also can make the hollow sphere rotation, produce very strong sucking-off power, remove indoor contaminated gas or water vapor etc.

2, can avoid rainwater to pour in down a chimney to indoor:

The utility model is to form hollow sphere by the semilune blade between the gland of upper bearing (metal) and the carriage outside the lower bearing, and rainwater all can flow through from the hollow sphere outside, will not pour in down a chimney to indoor, for the user provides convenience.

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

Fig. 2 is the enlarged diagram of semilune blade;

Fig. 3 is that the cross section of semilune blade is arc, leg-of-mutton structural representation;

Fig. 4 is that arc, leg-of-mutton cross section are the structural representation that both sides are provided with;

Below in conjunction with accompanying drawing concrete structure of the present utility model is described further.

The utility model comprises support 1, the top of the central shaft 9 of support 1 has upper bearing (metal) 10, lower bearing 5, form hollow sphere 6 by semilune blade 7 between the outer gland 8 of upper bearing (metal) 10 and lower bearing 5 carriage 4 outward, the cross section of semilune blade 7 is arc 13, triangle 12.

Arc 13, triangle 12 are both sides and are provided with.

Claims

1, the pneumatic ventilation fan of arc, triangular-section blade comprises support (1), the top and the bottom that it is characterized in that the central shaft (9) of support (1) have upper bearing (metal) (10), lower bearing (5) respectively, form hollow sphere (6) by semilune blade (7) between gland (8) that upper bearing (metal) (10) is outer and the carriage (4) outside the lower bearing (5), the cross section of semilune blade (7) is arc (13), triangle (12).

2, the pneumatic ventilation fan of arc according to claim 1, triangular-section blade is characterized in that arc (13), triangle (12) are both sides and are provided with.