CN2437879Y

CN2437879Y - Scavenger fan with air pressure type automatic shutter mechanism

Info

Publication number: CN2437879Y
Application number: CN 00247266
Authority: CN
Inventors: 张尧弟
Original assignee: ZHEJIANG LONGSHENG ELECTRIC CO Ltd
Current assignee: ZHEJIANG LONGSHENG ELECTRIC CO Ltd
Priority date: 2000-08-11
Filing date: 2000-08-11
Publication date: 2001-07-04
Anticipated expiration: 2010-08-11

Abstract

The utility model provides a ventilation fan with an air pressure type automatic shielding mechanism, and relates to the improvement on a shielding mechanism in a ventilation fan. The utility model comprises a panel, a back seat, a power supply component, a small blade plate, fan blades and a motor, wherein the small blade plate is arranged in the inner side of the panel, both ends of the small blade plate are fixed in mounting holes on the inner side of the panel and rotate around a central line of the mounting hole. The utility model adopts a pneumatic automatic shielding mechanism and overcomes the defect that the original linkage type shielding mechanism is opened and closed only by the way that a pull rope is manually controlled to drive a connecting rod to rotate. The utility model has the advantages of reasonable structure, convenient disassembly and cleaning and wide application range, and the utility model is especially suitable for being used on glass windows, and improves the shielding mechanism of ventilation fans.

Description

Pneumatic-typed hides the ventilation fan every mechanism automatically

The utility model relates to the improvement of ventilation fan, especially to the screening of the ventilation fan improvement every mechanism.

The ventilation fan of producing, selling and uying at present, its screening is installed on the back seat of flabellum every mechanism by several pieces lobula plates, and be formed by connecting by a connecting rod, this mechanism must pass through artificial stay cord rotating lind rod, rotates the opening and closing that realize hiding every mechanism thereby drive several pieces lobula plates, its structure is comparatively complicated, huge, operate cumbersomely, Applicable scope is comparatively single, is not suitable for being installed on the windshield using, and disassembly, cleaning are extremely inconvenient, must will could clean every mechanism hiding after the complete machine dismounting.

In view of the deficiency that prior art exists, the purpose of this utility model aims to provide the ventilation fan of a kind of automatic realization screening every mechanism's opening and closing.

Another purpose of the present utility model aims to provide the ventilation fan of a kind of automatic spacing screening every mechanism's opening angle.

The utility model is finished as follows: the utility model comprises panel, back seat, electrical cord assembly, lobula plate, flabellum, described lobula plate is arranged on the inboard of panel, its two ends are fixed in the mounting hole on the panel inboard, and rotate around its mounting hole center line.

Above-mentioned lobula plate is provided with banking stop, and the limiting stopper corresponding with banking stop is set on described panel.

Above-mentioned lobula plate is evenly arranged in the inboard of panel, and is installed in respectively in the corresponding mounting hole.

The utility model compared with prior art, simple and ingenious structure, volume be small and exquisite, realize that opening and closing and opening and closing neatly put in place automatically, it is very convenient, applied widely to unpick and wash.

The utility model has following accompanying drawing

Fig. 1 is main TV structure figure under the utility model working state

Fig. 2 is the A-A cut-away view of Fig. 1

Fig. 3 is 4 times of enlarged views at I place among Fig. 2

Fig. 4 is the longitudinal section under the utility model off working state

Fig. 5 be I among Fig. 4 ' 4 times of enlarged views

Accompanying drawing has been represented structure of the present utility model, in conjunction with the embodiments structure of the present utility model and principle thereof is further elaborated below again.The utility model comprises panel 1, back seat 2, electrical cord assembly 3, lobula plate 4, flabellum 7, and described lobula plate 4 is arranged on the inboard of panel 1, and its two ends are fixed in the mounting hole 5 on panel 1 inboard, and rotates around its mounting hole center line; Described lobula plate 4 is provided with banking stop 9, the limiting stopper 6 corresponding with banking stop 9 is set on described panel 1, rotate flexibly in the angle of regulation to limit every lobula plate 4, prevent the lobula plate upset excessively, reach the opening angle neat and consistent of every lobula plate; Described lobula plate 4 is evenly arranged in dull and stereotyped 1 inboard, and is installed in respectively in the corresponding mounting hole.When motor 8 starts, the utility model is then in running order down, flabellum is driven in rotation, gas pressurized between blade, air flow outlet at flabellum 7 forms pressure, flow through the air-flow in flabellum cross section, change rapidly and pressure difference occurs, along with the outside exhaust of flabellum, the air of screening between mechanism and flabellum of forming at lobula plate at first is discharged from, therefore, air pressure reduces herein, under the effect of external atmospheric pressure, lobula plate hides and is forced to open every mechanism, when the banking stop on the lobula plate 49 was run into limiting stopper 6 on the panel 1, small leaf promptly stopped the location, had so just realized screening opening every mechanism.After the motor outage, flabellum just stops the rotation, and ventilation fan then is under the off working state, and the lobula plate limit is closed voluntarily under the effect of gravity.Screening of the present utility model utilizes draught head to realize that lobula plate hides the automatic opening and closing every mechanism every mechanism, its simple and ingenious structure, and disassembly, cleaning are convenient, only need that panel is pulled down cleaning and get final product, and are the screening of ventilation fan to be created greatly every one of mechanism change.Fan the integral body that gas changes simultaneously and seem that volume is small and exquisite, enlarged the installation interface of ventilation fan, especially suitable being installed on the windshield used, from visual effect, lobula plate hides every mechanism and directly cuts off indoor and outdoor (or in the window and outside window), have the excellent decoration effect, more apparent cleaning is attractive in appearance, and its economic market is very good.

Claims

1. a pneumatic-typed hides the ventilation fan every mechanism automatically, comprise panel (1), back seat (2), electrical cord assembly (3), lobula plate (4), flabellum (7), motor (8), it is characterized in that: described lobula plate (4) is arranged on the inboard of panel (1), its two ends are fixed in the mounting hole (5) on panel (1) inboard, and rotate around its mounting hole center line.

2. pneumatic-typed as claimed in claim 1 hides the ventilation fan every mechanism automatically, and it is characterized in that: described lobula plate (4) is provided with banking stop (9), goes up at described panel (1) limiting stopper (6) corresponding with banking stop (9) is set.

3. pneumatic-typed as claimed in claim 1 or 2 hides the ventilation fan every mechanism automatically, and it is characterized in that: described lobula plate (4) is evenly arranged in the inboard of panel (1), and is installed in respectively in the corresponding mounting hole.