CN204628098U - A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling - Google Patents

A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling Download PDF

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Publication number
CN204628098U
CN204628098U CN201520280963.1U CN201520280963U CN204628098U CN 204628098 U CN204628098 U CN 204628098U CN 201520280963 U CN201520280963 U CN 201520280963U CN 204628098 U CN204628098 U CN 204628098U
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teeth
entrance
leaf
motor
impeller
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CN201520280963.1U
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沙宏磊
潘洪涛
孙吉松
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Yi Noboru (tianjin) Science And Technology Ltd
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Yi Noboru (tianjin) Science And Technology Ltd
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Abstract

The axial force balance that the utility model provides also can carry out the centrifugal blower structure of motor cooling, comprise motor and spiral case, described motor is arranged in electric machine casing, impeller is provided with in described spiral case, described impeller connects the transmission shaft of motor, and described spiral case has the front entrance and rear entrance that are oppositely arranged, and described rear entrance connects electric machine casing, and described electric machine casing be provided with the air intake passage communicated with rear entrance between motor, described impeller is the two-way leaf-teeth with the first leaf-teeth and the second leaf-teeth.The utility model is by arranging the impeller with two-way leaf-teeth in the spiral case of entrance and rear entrance before having, during wheel rotation, produce negative pressure suction gas at front entrance and rear entrance simultaneously, gas is discharged by the air outlet of centrifugal action from spiral case, because the forward and backward air inflow of impeller is all identical with air outlet pressure, radial loading force is cancelled out each other, and can not produce axial load forces generally to transmission shaft.

Description

A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling
Technical field
This practicality relates to centrifugal blower, particularly relates to the centrifugal blower structure that a kind of axial force balance also can carry out motor cooling.
Background technique
As shown in Figure 1, existing one pole blower wheel design is all unidirectional leaf-teeth, and during blower work, leaf-teeth are rotated by driven by motor, can produce the axial load forces F in direction shown in arrow in Fig. 1, and this axial load forces F is offset by axial thrust bearing.Existing usual way is: install an impeller and spiral case respectively at the two ends of a rotating shaft, thus offsets axial load forces F, but needs two sleeve impellers and spiral case due to the program, installs loaded down with trivial details, complex structure, has inconvenience in the application.
Summary of the invention
For solving the problem, the present invention proposes a kind of blade wheel structure of symmetric type and the corresponding worm frame completing function, during the work of this impeller, can not axial load forces be produced, greatly reduce the requirement for bearing capacity of axial thrust bearing.
In order to solve the problem, the utility model provides a kind of axial force balance and can carry out the centrifugal blower structure of motor cooling, comprise motor and spiral case, described motor is arranged in electric machine casing, impeller is provided with in described spiral case, described impeller connects the transmission shaft of motor, wherein, described spiral case has the front entrance and rear entrance that are oppositely arranged, described rear entrance connects electric machine casing, and described electric machine casing be provided with the air intake passage communicated with rear entrance between motor, described impeller is the two-way leaf-teeth with the first leaf-teeth and the second leaf-teeth.
Wherein, described first leaf-teeth and the second leaf-teeth are radial symmetric structure.
Wherein, the blade face of described first leaf-teeth and the blade face of the second leaf-teeth are oppositely arranged.
Wherein, dividing plate is provided with between described first leaf-teeth and the second leaf-teeth.
Wherein, the air outlet that described dividing plate extends to spiral case forms separate the first outlet and second and exports.
Compared with prior art, advantage of the present utility model and effect are: 1. the utility model is by arranging the impeller with two-way leaf-teeth in the spiral case of entrance and rear entrance before having, during wheel rotation, produce negative pressure suction gas at front entrance and rear entrance simultaneously, gas is discharged by the air outlet of centrifugal action from spiral case, because the forward and backward air inflow of impeller is all identical with air outlet pressure, radial loading force is cancelled out each other, axial load forces can not be produced to transmission shaft generally, greatly reduce the requirement for bearing capacity of axial thrust bearing.2. the inlet stream of the rear entrance of impeller enters spiral case through the gas-entered passageway between electric machine casing and motor, can cool motor, does not need to arrange cooling devcie of motor in addition.
Accompanying drawing explanation
Fig. 1 is existing blower fan structure schematic diagram.
Fig. 2 is a kind of axial force balance of the utility model and can carries out the structural representation of the centrifugal blower structure of motor cooling.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
As shown in Figure 2, axial force balance disclosed in the utility model also can carry out the centrifugal blower structure of motor cooling, spiral case 2 is provided with impeller 1, impeller 1 is for having the two-way leaf-teeth of the first leaf-teeth 110 and the second leaf-teeth 120, spiral case 2 is provided with relative front entrance 3 and rear entrance 4, front entrance 3 is as the suction port of the first leaf-teeth 110, and rear entrance 4 is as the suction port of the second leaf-teeth 120.Rear entrance 4 connects electric machine casing 6, and electric machine casing 6 is equipped with motor 7, has the air intake passage 9 identical with rear entrance 4 between electric machine casing 6 with motor 7, and the transmission shaft 8 of motor 7 connects and impeller 1.When impeller 1 rotates, first leaf-teeth 110 and the second leaf-teeth 120 rotate simultaneously, produce negative pressure suction gas at front entrance 3 and rear entrance 4 simultaneously, the gas sucking spiral case 2 is discharged by the air outlet of centrifugal action from spiral case 2, because the forward and backward air inflow of impeller 1 is all identical with air outlet pressure, forward and backward radial loading force is cancelled out each other, and can not produce axial load forces generally, greatly reduce the requirement for bearing capacity of axial thrust bearing to transmission shaft 8.2. the inlet stream of the rear entrance 4 of impeller 1 enters spiral case through the gas-entered passageway 9 between electric machine casing 6 and motor 7, can cool during air inlet to motor 7, does not need to arrange cooling devcie of motor in addition.Usually, the first leaf-teeth 110 and the second leaf-teeth 120 are radial symmetric structure, and forward and backward radial loading force size is substantially identical, realizes cancelling out each other.The blade face 111 of the first leaf-teeth 110 and the blade face 121 of the second leaf-teeth 120 are oppositely arranged.Be provided with dividing plate 10 between first leaf-teeth 110 and the second leaf-teeth 120, avoid influencing each other of forward and backward air inlet.The air outlet that dividing plate 10 extends to spiral case 2 forms the first separate outlet 510 and the second outlet 520, avoids influencing each other during the giving vent to anger of the first leaf-teeth 110 and the second leaf-teeth 120.
In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its parts and components can be different.All equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.

Claims (5)

1. an axial force balance the centrifugal blower structure of motor cooling can be carried out, comprise motor (7) and spiral case (2), described motor (7) is arranged in electric machine casing (6), impeller (1) is provided with in described spiral case (2), described impeller (1) connects the transmission shaft (8) of motor (7), it is characterized in that, described spiral case (2) has the front entrance (3) and rear entrance (4) that are oppositely arranged, described rear entrance (4) connects electric machine casing (6), and between described electric machine casing (6) with motor (7), be provided with the air intake passage (9) communicated with rear entrance (4), described impeller (1) is for having the two-way leaf-teeth of the first leaf-teeth (110) and the second leaf-teeth (120).
2. axial force balance according to claim 1 also can carry out the centrifugal blower structure of motor cooling, and it is characterized in that, described first leaf-teeth (110) and the second leaf-teeth (120) are radial symmetric structure.
3. axial force balance according to claim 2 also can carry out the centrifugal blower structure of motor cooling, it is characterized in that, the blade face (111) of described first leaf-teeth (110) and the blade face (121) of the second leaf-teeth (120) are oppositely arranged.
4. the axial force balance according to claim 1 or 2 or 3 also can carry out the centrifugal blower structure of motor cooling, it is characterized in that, is provided with dividing plate (10) between described first leaf-teeth (110) and the second leaf-teeth (120).
5. axial force balance according to claim 4 also can carry out the centrifugal blower structure of motor cooling, it is characterized in that, the air outlet that described dividing plate (10) extends to spiral case (2) forms the first separate outlet (510) and the second outlet (520).
CN201520280963.1U 2015-05-04 2015-05-04 A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling Active CN204628098U (en)

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CN201520280963.1U CN204628098U (en) 2015-05-04 2015-05-04 A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling

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Application Number Priority Date Filing Date Title
CN201520280963.1U CN204628098U (en) 2015-05-04 2015-05-04 A kind of axial force balance also can carry out the centrifugal blower structure of motor cooling

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611377A (en) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) A kind of electric booster impeller
CN109654046A (en) * 2018-12-12 2019-04-19 中国北方发动机研究所(天津) A kind of electric booster
CN110043486A (en) * 2019-04-02 2019-07-23 中国北方发动机研究所(天津) A kind of dynamoelectric compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611377A (en) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) A kind of electric booster impeller
CN109654046A (en) * 2018-12-12 2019-04-19 中国北方发动机研究所(天津) A kind of electric booster
CN110043486A (en) * 2019-04-02 2019-07-23 中国北方发动机研究所(天津) A kind of dynamoelectric compressor

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