CN201386696Y

CN201386696Y - Central disc of tangential fan impeller

Info

Publication number: CN201386696Y
Application number: CN200920117579U
Authority: CN
Inventors: 高炎康; 胡修柏; 吴雁平
Original assignee: Ningbo Langdi Impeller Machinery Co Ltd
Current assignee: Ningbo Langdi Impeller Machinery Co Ltd
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2010-01-20
Anticipated expiration: 2019-04-13

Abstract

The utility model relates to the field of tangential impeller fans for air-conditioners, in particular to a central disc of a tangential fan impeller. A disc body (1) is circular and is equipped with a bearing rubber mounting opening and a plurality of blade inserting holes (2), the blade inserting holes (2) are orderly arranged along the peripheral direction of the disc body (1), each blade inserting hole (2) consists of an upper end inserting hole (21), a middle inserting hole (22) and a lower end inserting hole (23), shapes of the upper end inserting hole (21) and the lower end inserting hole (23) are symmetrical along a center position of each blade inserting hole (2), and an aperture distance (L1) between the upper end inserting hole (21) and the lower end inserting hole (23) is larger than an aperture distance (L2) between the upper end and the lower end of the middle inserting hole (22). The central disc of a tangential fan impeller has the advantages that blades are inserted into the blade inserting holes conveniently and fast, the central disc is not easy to deform, and an impeller manufactured by the central disc is low in noise and large in torque and the like.

Description

The mid-game of cross flow fan impeller

Technical field

The utility model relates to idle call through-flow fan impeller field, relates in particular to a kind of mid-game of cross flow fan impeller.

Background technique

The mid-game of cross flow fan impeller is the important spare part of through-flow fan impeller, and the mid-game of cross flow fan impeller is provided with a plurality of blade jacks and axle is subjected to the rubber mount inlet, and the blade jack is used to the blade of pegging graft, and axle is subjected to the rubber mount inlet to be used for axle and is subjected to installing and fixing of rubber.As Figure 1-3, blade jack 8 in the existing impeller mid-game is made up of arcuation wall and straight wall, the joint, two ends of arcuation wall and straight wall is a chamfering, head and the tail aperture, two ends is apart from minimum, when the insertion blade jack 8 of blade 7, the part of difficult insertion is exactly the two ends of blade 7, and after blade jack 8 was inserted in the bottom of blade 7, the 8 liang of chamfering places in blade 7 bottoms and blade jack contacted for putting.Axle is made of with 2 U-shaped holes 4 that link to each other with its perforation a circular port 3 by rubber mount inlet shape, and 2 U-shaped holes 4 that link to each other with its perforation are along the center of circle bilateral symmetry of circular port 3.The defective that existing mid-game exists is: 1. blade 7 grafting speed are slow, and efficient is low; 2. the chamfering of blade 7 bottoms and blade jack 8 can not be fitted fully, impeller can produce regular noise because of the cycle collision of blade 7 bottoms and blade jack 8 chamferings in the running, and then influence the quiet requirement of product, in the field comparatively responsive to the wheel rotation noise, this defective is just particularly evident; 3. axle is subjected to 2 U-shaped holes 4 of rubber mount inlet to be symmetrical form, can cause the impeller moment of torsion less during use, can produce skidding with motor, and the mid-game radial strength reduce obviously, in the process of mid-game installation roll riveting, unavoidably can be subjected to roll riveting pressure, cause the mid-game distortion.

Summary of the invention

In order to solve the technological deficiency that existing cross flow fan impeller mid-game exists, a goal of the invention of the present utility model provides the cross flow fan impeller mid-game that a kind of blade can insert the blade jack easily and fast.

In order to realize above-mentioned purpose, the utility model has adopted following technological scheme:

The mid-game of cross flow fan impeller, disk body is rounded, disk body is provided with axle and is subjected to rubber mount inlet and a plurality of blade jack, the blade jack is regularly arranged along the circumferencial direction of disk body, the blade jack is made of upper end jack, middle part jack and lower end jack, and the shape of upper end jack and lower end jack is along blade jack center symmetry, and the aperture of upper end jack and lower end jack distance is greater than the aperture distance at place, two ends about the jack of middle part.

As preferably, the top wall of described upper end jack and the bottom wall of lower end jack are straight wall, after blade inserts the blade jack, the both ends of the surface up and down of blade contact with lower end jack face with the upper end jack respectively, promptly fit with straight wall, thereby when wheel rotation, relative movement can not take place between blade and blade jack, avoid the periodicity noise that therefore produces.

As preferably, a wall of described middle part jack is the arcuation wall, the bending of impeller roll riveting rear blade, and one of them flexure plane is fitted on the arcuation wall, has reduced noise.

As preferably, described each blade jack is identical to the distance in the disk body center of circle, and equidistant between any two adjacent blades jacks.

As preferably, described axle is made of with a U-shaped hole that links to each other with its perforation circular port by the rubber mount inlet, described circular port is identical with the home position of circular disk body, changed by the structure of rubber mount inlet on existing axle, the U-shaped hole that is about to 2 symmetries changes an independent U-shaped hole into, and the U-shaped hole is an asymmetrical form, the impeller moment of torsion can increase, be difficult for producing skidding with motor, the mid-game radial strength is obviously strengthened than symmetrical form, and mid-game is difficult for producing distortion when roll riveting.

Cross flow fan impeller mid-game by the technique scheme design, the aperture distance of upper end jack and lower end jack is greater than the aperture distance at place, two ends about the jack of middle part, calibration and insertion are convenient in two ends about when blade inserts, and have improved the insertion speed of blade greatly, thereby have improved manufacturing efficiency.In sum, this cross flow fan impeller mid-game has advantages such as blade insertion blade jack is convenient fast, mid-game is not yielding, and the impeller noise of being made by this mid-game is low, moment of torsion is big.

Description of drawings

Fig. 1: the structural representation of existing cross flow fan impeller mid-game in the background technique.

Fig. 2: the structural representation when blade is inserted in existing cross flow fan impeller mid-game in the background technique.

Fig. 3: the structure for amplifying schematic representation at A place among Fig. 2.

Fig. 4: the utility model embodiment's structural representation.

Fig. 5: the structure for amplifying schematic representation at C place among Fig. 4.

Fig. 6: the structural representation when blade is inserted in the mid-game of cross flow fan impeller among the utility model embodiment.

Fig. 7: the structure for amplifying schematic representation at B place among Fig. 6.

Embodiment

Below in conjunction with accompanying drawing 4-7 embodiment of the present utility model is made a detailed explanation.

Cross flow fan impeller mid-game shown in Fig. 4-7, disk body 1 is rounded, and disk body 1 is provided with axle and is subjected to rubber mount inlet and a plurality of blade jack 2.Blade jack 2 is regularly arranged along the circumferencial direction of disk body 1, and each blade jack 2 is identical to the distance in disk body 1 center of circle, and equidistant between any two adjacent blades jacks 2.Blade jack 2 is made of upper end jack 21, middle part jack 22 and lower end jack 23, and the shape of upper end jack 21 and lower end jack 23 is along blade jack 2 center symmetries, the aperture distance L 1 of upper end jack 21 and lower end jack 23 is greater than the aperture distance L 2 at middle part jack place, two ends 22 about, when blade 7 inserts up and down two ends be convenient to calibration and insertion.The top wall 24 of upper end jack 21 and the bottom wall of lower end jack 23 are straight wall, and after blade 7 inserted blade jack 2, the both ends of the surface up and down of blade 7 contacted with 23 of upper end jack 21 and lower end jacks respectively, promptly fit with straight wall 24.A wall 25 of middle part jack 22 is arcuation walls, 7 bendings of impeller roll riveting rear blade, and one of them flexure plane is fitted on the arcuation wall 25, has reduced noise.Axle is made of with a U-shaped hole 62 that links to each other with its perforation circular port 61 by rubber mount inlet 6, circular port 61 is identical with the home position of circular disk body 1, changed by the structure of rubber mount inlet on existing axle, the U-shaped hole that is about to 2 symmetries changes an independent U-shaped hole into, and the U-shaped hole is an asymmetrical form.

The foregoing description only is a this patent mode of execution preferably, and the structure that all employing the technical program are described, feature and the variation on its spiritual principle, modification all belong to the protection domain of this patent.

Claims

1. cross flow fan impeller mid-game, disk body (1) is rounded, disk body (1) is provided with axle and is subjected to rubber mount inlet and a plurality of blade jack (2), blade jack (2) is regularly arranged along the circumferencial direction of disk body (1), it is characterized in that described blade jack (2) is by upper end jack (21), middle part jack (22) and lower end jack (23) constitute, and the shape of upper end jack (21) and lower end jack (23) is along blade jack (2) center symmetry, and the aperture of upper end jack (21) and lower end jack (23) distance (L1) is greater than middle part jack (22) the aperture distance (L2) at place, two ends up and down.

2. cross flow fan impeller according to claim 1 mid-game is characterized in that the top wall (24) of described upper end jack (21) and the bottom wall of lower end jack (23) are straight wall.

3. cross flow fan impeller according to claim 1 mid-game is characterized in that a wall (25) of described middle part jack (22) is the arcuation wall.

4. cross flow fan impeller according to claim 1 mid-game is characterized in that described each blade jack (2) is identical to the distance in disk body (1) center of circle, and equidistant between any two adjacent blades jacks (2).

5. cross flow fan impeller according to claim 1 mid-game, it is characterized in that described axle is made of with a U-shaped hole (62) that links to each other with its perforation circular port (61) by rubber mount inlet (6), described circular port (61) is identical with the home position of circular disk body (1).