The venetian blind type motor fan housing
Technical field:
The utility model belongs to field of mechanical technique, especially relates to a kind of venetian blind type motor fan housing of motor.
Background technology:
At present, existing as shown in Figure 1 motor afterbody is provided with cover body 1, this cover body 1 front opening, and the rear end has air inlet 2, and its inside is provided with by the shaft-driven impeller of rotor, and is air-breathing from the outside by impeller, and air-supply is the motor cooling forward.As sleety weather, water inlet causes fan housing, impeller corrosion easily, also can cause the motor internal water inlet when serious.
Do not intake in order to protect motor; the staff covers an oilcloth or other rainproof apparatus often on motor, still, carry out rainproof the time with oilcloth or other rainproof apparatus; have influence on the heat radiation of motor again, and then influenced the useful life of whole motor.
For this reason, design a kind of can be rainproof, the motor fan housing that does not influence motor radiating again is particularly urgent.
Summary of the invention:
The purpose of this utility model is at the above-mentioned problems in the prior art, and a kind of venetian blind type motor fan housing is provided.Make the motor also can operate as normal under the situation of precipitation in the open, do not influence the heat radiation of motor again, simultaneously, and then the useful life of improving whole motor.
The utility model venetian blind type motor fan housing comprises cover body, this cover body front opening, and the rear end has air inlet, it is characterized in that: described air inlet is provided with many parallel breast boards, and above-mentioned breast board is downward-sloping, forms the venetian blind type guardrail.
Its special character is: have through hole on the described cover body front end side wall, above-mentioned through hole is corresponding with the screwed hole of adapted motor tube afterbody.
Its special character is: described through hole number is 3 or 4, evenly distributes along circumference.
Its special character is: the cross section parallelogram or the wedge shape of described breast board, 120 °-150 ° of the angles of its upper surface and horizontal plane.
Its special character is: described breast board two ends are hinged on the cover body, the angle adjustable angle of breast board upper surface and horizontal plane.
Therefore, the advantage of the utility model venetian blind type motor fan housing is: 1, simple in structure, easily manufactured; 2, practicality is good; 3, cost is low, with the motor of its assembling, is particularly suitable for outdoor use.
Description of drawings:
Fig. 1 is the perspective view of original motor fan housing.
Fig. 2 is the perspective view of the utility model venetian blind type motor fan housing embodiment one.
Fig. 3 is the cross sectional representation of the utility model venetian blind type motor fan housing embodiment one breast board.
Fig. 4 is the cross sectional representation () of the utility model venetian blind type motor fan housing embodiment two breast boards.
Fig. 5 is the cross sectional representation (two) of the utility model venetian blind type motor fan housing embodiment two breast boards.
Embodiment:
Among the figure: 1 is that cover body, 2 is that air inlet, 3 is that breast board, 4 is through hole.
Embodiment one:
Shown in Fig. 2,3, the utility model venetian blind type motor fan housing comprises cover body 1, this cover body 1 front opening, the rear end has air inlet 2, it is characterized in that: described air inlet 2 is provided with many parallel breast boards 3, and above-mentioned breast board 3 is downward-sloping, forms the venetian blind type guardrail.
Have four through holes 4 on described cover body 1 front end side wall, above-mentioned through hole 4 evenly distributes along circumference, and corresponding with the screwed hole of adapted motor tube afterbody.
The cross section parallelogram of described breast board 3,150 ° of the angles of its upper surface and horizontal plane.
Embodiment two:
Shown in Fig. 2,4,5, thick on the cross section of described breast board 3, thin down, roughly be wedge shape, the angle of its upper surface and horizontal plane is 30 °.Can be triangular in shape as shown in Figure 4; Be irregular polygon as shown in Figure 5, all the other structures and parts are shown in enforcement mode one.
Embodiment three: described breast board 3 two ends are hinged on the cover body 1, the angle adjustable angle of breast board 3 upper surfaces and horizontal plane.All the other structures and parts are shown in enforcement mode one, and figure slightly.