CN2295948Y

CN2295948Y - Spring tension air changing fan

Info

Publication number: CN2295948Y
Application number: CN 97203903
Authority: CN
Inventors: 邹国营
Original assignee: SHUAIKANG KITCHEN EQUIPMENT CO Ltd NINGBO CITY
Current assignee: SHUAIKANG KITCHEN EQUIPMENT CO Ltd NINGBO CITY
Priority date: 1997-01-02
Filing date: 1997-01-02
Publication date: 1998-10-28
Anticipated expiration: 2007-01-02

Abstract

The utility model discloses a spring tension type scavenger fan whose assembly and disassembly are very convenient. The utility model is composed of a machine body provided with a cochlear centrifugal fan and a wind discharging hood and a wind charging plate. The wind charging plate and the machine body are connected by a spring tension structure which comprises springs whose structures are symmetrical. The opening and the closing of the wind charging plate are accomplished by the matching of the elasticity of the springs, a hook on the wind charging plate and a fulcrum on the front end surface of the machine body. The assembly and disassembly of the wind charging plate can be carried out by hand without tools. Besides, the utility model has the advantages of simple and easy operation and convenient replacement and washing for parts.

Description

Spring tension formula ventilation fan

The utility model relates to ventilation equipment, particularly the equipment of room ventilation ventilation.

As the room ventilation air regenerating device, ventilation fan is favored by people well and quite with its small and exquisite, cheap for manufacturing cost, ventilation effect simple in structure, be installed in kitchen, health intercropping ventilation mostly, also be installed in the parlor, ventilation is done in the room, it is made of body, air intake plate two parts, common ventilation fan body is screwed with air intake plate and is connected, and this is all cumbersome to installing, change cleaning, and needs certain instrument could realize mounting or dismounting.

Task of the present utility model is to provide a kind of air intake plate and the simple load and unload spring tension of body formula ventilation fan.

Task of the present utility model is finished by following scheme: comprise body fastened to each other and air intake plate, body part can be vertically mounted in the ceiling, in the volute centrifugal fan is housed, the outlet housing that can extract out is equipped with in the side, and the wind pressure type air door is housed in the cover; Air intake plate is connected the body front end face, it is characterized in that air intake plate is connected by spring tension structure with body, this structure includes the spring of a symmetrical configuration, the spring mid point is wound into the circle that can hook draws, there is recessed circle at two ends, the hook that can hook draws circle is housed, with the fulcrum that has on the body front end face of air intake plate combination and the recessed round hook mutually of spring connects on the air intake plate.

The utility model is compared with known technology, utilizes spring tension structure to connect, and makes the mounting or dismounting of air intake plate need not instrument can whip to adorn removable, and very convenient, provides great convenience for changing clothes other part.

Description of drawings.

Fig. 1, Fig. 2 are spring tension structure principle chart, and Fig. 1 is the spring free state, and Fig. 2 is the spring tension.

Fig. 3 is the utility model structural representation.

Fig. 4 is the A place enlarged drawing of Fig. 3.

Be described in detail again by above-mentioned accompanying drawing embodiment.

Spring tension formula ventilation fan (referring to Fig. 1-4) comprises body fastened to each other (5) and air intake plate (7), the body part can be vertically mounted in the ceiling, in the volute centrifugal fan is housed, external mains supply, the outlet housing (6) that can extract out is equipped with in the side, connect outside wall and communicate, the wind pressure type air door is housed in the outlet housing with atmosphere.

Air intake plate is connected with the body front end face, the utility model utilizes spring tension principle, air intake plate and being connected of body front end face are adopted spring tension structure, this structure includes the spring (1) of a symmetrical configuration, the spring mid point must be wound into the circle (3) that can hook draws, and the recessed circle (4) that can hook fulcrum (2) is made at two ends, therefore, the corresponding hook (8) that can hook turn that is equipped with on air intake plate must have the fulcrum that connects with the recessed round hook mutually of spring on the front end face of body.After hook hooks turn effect F1, the recessed circle of spring is hooked on the fulcrum and is in the tension of Fig. 2, air intake plate is opened.After hook promotes turn effect F2 power, make the recessed circle of spring break away from fulcrum and slide to the free state that Fig. 1 is replied on both sides, this moment, air intake plate was identical mutually and be fixed and close with the body front end face, and described fulcrum can be the sidewall of general hole slot.

Usually, the faying face of air intake plate and body is provided with two pairs of spring tension structures.

Allow spring (1) be in tension during assembling earlier and the recessed circles in two ends (4) are stuck on fulcrum (2) the hole slot sidewall, again the hook on the air intake plate (8) is tangled the circle (3) of spring, arresting air intake plate with two hands then pushes hard slightly, the recessed circle of spring slides to the both sides state that affranchises with regard to leaving the hole slot sidewall, air intake plate promptly was fixed and closed this moment.

Claims

1. spring tension formula ventilation fan comprises body fastened to each other (5) and air intake plate (7), and body partly can be vertically mounted in the ceiling, in the volute centrifugal fan is housed, the outlet housing (6) that can extract out is equipped with in the side, and the wind pressure type air door is housed in the cover; Air intake plate is connected the body front end face, it is characterized in that air intake plate is connected by spring tension structure with body, this spring tension structure includes the spring (1) of a symmetrical configuration, the spring mid point is wound into the circle (3) that can hook draws, there is recessed circle (4) at two ends, the hook (8) that can hook draws circle is housed, with the fulcrum (2) that has on the body front end face of air intake plate combination and the recessed round hook mutually of spring connects on the air intake plate.

2. spring tension formula ventilation fan as claimed in claim 1 is characterized in that the faying face of air intake plate and body is provided with two pairs of spring tension structures.