CN201162720Y

CN201162720Y - High-efficiency energy-saving axial fan

Info

Publication number: CN201162720Y
Application number: CNU2007202017286U
Authority: CN
Inventors: 赵瑞华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-21
Filing date: 2007-12-21
Publication date: 2008-12-10
Anticipated expiration: 2017-12-21

Abstract

The utility model discloses an efficient and energy-saving axial fan, which includes an axis (1) and a blade shank (2); wherein, the blade shank (2) is sheathed on the axis (1), the external space of the blade shank (2) is evenly connected with a main vane (3) which is provided with an auxiliary vane (4) in interval; the height(a) of an outer circle at the top of the auxiliary vane (4) is the same as that of an outer circle at the top of the main vane (3); the height (b) of an inner circle at the bottom of the auxiliary vane (4) is the same as that of the central circle of the main vane (3); the two sides at the bottom of the auxiliary vane (4) is connected with the outer part of the blade shank (2) through two connecting bars (5). The utility model is additionally provided with the auxiliary vane to increase the wind pressure and wind volume generated by the fan; the effect of removing noises is improved by changing the connection modes of vanes and increasing fixed rings; the wind pressure and wind volume generated by the fan are increased without adding electrical power consumption, thus increasing the working efficiency of the fan. The fan of the utility model is simple in structure, low in cost, and convenient for installing and dismantling.

Description

Energy-efficient axial fan

Technical field

The utility model relates to a kind of axial fan, especially energy-efficient axial fan.

Background technique

At present, axial fan is that the mechanical energy of will rotate is converted into gas pressure energy and kinetic energy, and with the axial introducing of gas by blower fan, and the equipment from axially transferring out, its many industrial production, the requisite tool of production of underground work.Present axial fan energy consumption is big, and in China, the power consumption of blower fan has accounted for about 10% of the total consumption of national economy.Big, the shortcomings such as cost is high, production complexity of present axial fan ubiquity noise, and the blast that is produced is not directly proportional with the energy of consumption, the blower fan inefficiency, and working life is short.

The model utility content:

The purpose of this utility model is: a kind of energy-efficient axial fan is provided, and it is simple in structure, cost is low, noise is little, high working efficiency, to overcome the deficiencies in the prior art.

The utility model is achieved in that energy-efficient axial fan, it comprises axle (1), blade root wheel (2), blade root wheel (2) is enclosed within on the axle (1), blade root wheel (2) outside spacing is connected with primary blades (3) uniformly, the equally spaced back blades (4) that is provided with between the primary blades (3), the cylindrical height (a) at back blades (4) top is identical with the cylindrical height at primary blades (3) top, the interior circle height (b) of back blades (4) bottom is identical with the center circle height of primary blades (3), and back blades (4) two bottom sides is connected by two connecting rods (5) and blade root wheel (2) are outside.

Be provided with 1 or 2 back blades (4) between wherein adjacent two primary blades (3).

Described blade root wheel (2) comprises interior wheel (6) and foreign steamer (7), and interior wheel (6) is enclosed within on the axle (1), and foreign steamer (7) is enclosed within on the interior wheel (6).

The axial length that can also be foreign steamer (7) two ends is than the long 10～20mm of the axial length at interior wheel (6) two ends, and the outside one end of foreign steamer (7) encases an end of interior wheel (6), and axially connects.

The axial width of described primary blades (3) and back blades (4) is than the long 12～20mm of the axial length at foreign steamer (7) two ends, and connecting rod (5) bottom of primary blades (3) two bottom sides, back blades (4) all is connected with the two ends of foreign steamer (7).

Be more preferably, foreign steamer (7) is provided with the groove (8) corresponding with primary blades (3) position, and the degree of depth of groove (8) is 2～4mm, and primary blades (3) bottom is embedded in the groove (8).

The top that is preferably in primary blades (3) and back blades (4) is connected with a retaining ring (9).

Described primary blades (3) is below the R0.05 with the surface finishment of back blades (4).

Owing to adopted technique scheme, compared with prior art, the utility model has adopted the mode that increases back blades to improve blast and the air quantity that blower fan produces, and improve the stability of use and eliminate noise by Placement and the increase retaining ring that changes blade, when not increasing the blower fan electric quantity consumption, increase blast and air quantity that blower fan produces, improved the working efficiency of blower fan; The installation precision height of blower fan can further improve the work efficiency of blower fan, and can better eliminate noise.Simple in structure, advantages such as cost is low, easy installation and removal that the utility model also has reduce 1/3 than existing blower fan volume under the prerequisite of same air quantity.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is the side view of accompanying drawing 1.

Embodiment

Embodiment 1 of the present utility model: the structure of energy-efficient axial fan as shown in Figure 1, wheel 6 and foreign steamer 7 in blade root wheel 2 comprises, interior wheel 6 is enclosed within on the axle 1, take turns on 6 in foreign steamer 7 is enclosed within, the axial length at foreign steamer 7 two ends is than the long 15mm of axial length at interior wheel 6 two ends, an end of wheel 6 in the outside one end of foreign steamer 7 encases, and connect by screw axial, at the bottom of the axial width of primary blades 3 than the long 16mm of axial length at foreign steamer 7 two ends, primary blades 3 two bottom sides adopt by screw with the two ends of foreign steamer 7 and are threaded, also be provided with the groove 8 corresponding with primary blades 3 positions on the foreign steamer 7, the degree of depth of groove 8 is 3mm, and primary blades 3 bottoms are embedded in the groove 8.。Equally spacedly between the primary blades 3 be provided with a back blades 4, the cylindrical height a at back blades 4 tops is identical with the cylindrical height at primary blades 3 tops, the interior circle height b of back blades 4 bottoms is identical with the center circle height of primary blades 3, back blades 4 two bottom sides are provided with two connecting rods 5, and the bottom of connecting rod 5 is adopted by screw with the two ends of foreign steamer 7 and is threaded; Primary blades 3 is connected with a retaining ring 9 with the top of back blades 4; Primary blades 3 is below the R0.05 with the surface finishment of back blades 4.

The utility model to improve the blast of blower fan outlet, guarantees the low production cost of blower fan by set up 1 or 2 back blades 4 between primary blades 3 simultaneously; The cylindrical height a at back blades 4 tops is identical with the cylindrical height at primary blades 3 tops, the interior circle height b of back blades 4 bottoms is identical with the center circle height of primary blades 3, back blades 4 such designs can effectively improve the blast of exit portion, and reduced the weight of back blades 4 significantly, reduced the consumption of blower fan self; Blade root wheel 2 is that the form that interior wheel 6 is threaded with foreign steamer 7 constitutes, and unclamps their screw of axial connection in the needs dismounting, from the side foreign steamer 7 is unloaded just passablely, can make things convenient for installation and removal like this, is convenient to keep in repair; The axial width of primary blades 3 and back blades 4 is than the long 16mm of axial length at foreign steamer 7 two ends, connecting rod 5 bottoms of primary blades 3 two bottom sides, back blades 4 are all adopted with the two ends of foreign steamer 7 and are threaded, also be provided with the groove 8 corresponding on the foreign steamer 7 with primary blades 3 positions, the degree of depth of groove 8 is 3mm, and primary blades 3 bottoms are embedded in the groove 8.Such structure, be in order to simplify the installation of blade on the one hand, can improve the installation precision of blade on the other hand, the required precision that is beyond one's reach of original welding procedure is met, guaranteed simultaneously firmly blade connect and convenient disassembly in have goodish stability again; Top at primary blades 3 and back blades 4 is connected with a retaining ring 9, and it can guarantee back blades 4 stability in use, has improved the bulk strength between the blade, has also played the effect of eliminating noise simultaneously; Primary blades 3 is below the R0.05 with the surface finishment of back blades 4, can effectively reduce because the resistance that blade brings with contacting of air, and blade surface also is not easy to assemble dust and influences blade working.

Claims

1. energy-efficient axial fan, it comprises axle (1), blade root wheel (2), blade root wheel (2) is enclosed within on the axle (1), it is characterized in that: blade root wheel (2) outside spacing is connected with primary blades (3) uniformly, the equally spaced back blades (4) that is provided with between the primary blades (3), the cylindrical height (a) at back blades (4) top is identical with the cylindrical height at primary blades (3) top, the interior circle height (b) of back blades (4) bottom is identical with the center circle height of primary blades (3), and back blades (4) two bottom sides is connected by two connecting rods (5) and blade root wheel (2) are outside.

2. energy-efficient axial fan according to claim 1 is characterized in that: be provided with 1 or 2 back blades (4) between adjacent two primary blades (3).

3. energy-efficient axial fan according to claim 1 is characterized in that: blade root wheel (2) comprises interior wheel (6) and foreign steamer (7), and interior wheel (6) is enclosed within on the axle (1), and foreign steamer (7) is enclosed within on the interior wheel (6).

4. energy-efficient axial fan according to claim 3, it is characterized in that: the axial length at foreign steamer (7) two ends is than the long 10～20mm of the axial length at interior wheel (6) two ends, the outside one end of foreign steamer (7) encases an end of interior wheel (6), and axially connects.

5. energy-efficient axial fan according to claim 4, it is characterized in that: the axial width of primary blades (3) and back blades (4) is than the long 12～20mm of the axial length at foreign steamer (7) two ends, and connecting rod (5) bottom of primary blades (3) two bottom sides, back blades (4) all is connected with the two ends of foreign steamer (7).

6. energy-efficient axial fan according to claim 5 is characterized in that: foreign steamer (7) is provided with the groove (8) corresponding with primary blades (3) position, and the degree of depth of groove (8) is 2～4mm, and primary blades (3) bottom is embedded in the groove (8).

7. according to claim 1,2 or 5 described energy-efficient axial fans, it is characterized in that: primary blades (3) is connected with a retaining ring (9) with the top of back blades (4).

8. according to claim 1,2 or 5 described energy-efficient axial fans, it is characterized in that: primary blades (3) is below the R0.05 with the surface finishment of back blades (4).