Waterproof structure of air blower and air blower

Abstract

The utility model relates to the technical field of air blowers, in particular to a waterproof structure of an air blower. The waterproof structure of the air blower specifically comprises a fan rear cover, a rotating shaft, a first bearing, fan blades, a first waterproof piece and a second waterproof piece. The first waterproof part is located at the joint of the rotating shaft, the first bearing and the fan blade, the rotating shaft is sleeved with the first bearing, the rotating shaft is inserted into the fan blade, and water is prevented from permeating into the fan rear cover from gaps among the fan blade, the first bearing and the rotating shaft; the second waterproof piece is located between the first bearing and the fan rear cover, and water is prevented from permeating into the motor from the position between the first bearing and the fan rear cover. The air blower has the advantage of preventing water from entering the air blower.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blower fan technical field, especially a blower fan waterproof structure blower fan. BACKGROUND

[0002] The existing centrifugal blower fan mostly adopts the traditional inner rotor type induction motor, which is composed of the inner rotor type induction motor, a fan shell and a fan wheel. The blower fan must be installed with heat dissipation blades and a fan cover and other components, which has a complex structure. Moreover, since the environment of the kitchen room of a restaurant is high temperature and high humidity, and the kitchen room must be washed with water every day, the waterproof performance is required to be high. The existing ordinary centrifugal blower fan motor is mostly exposed, so it is difficult to avoid that the water flow enters the motor or enters the internal motor through the connecting box and other connecting pieces during washing, causing the motor to be burned out, even causing accidents, and seriously affecting the use safety.

[0003] Therefore, the utility model provides a blower fan waterproof structure aiming at the shortage of the prior art. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortage of the prior art, the utility model provides a blower fan waterproof structure, which aims to solve the problem of water entering the internal blower fan.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A blower fan waterproof structure comprises a fan rear cover, a rotating shaft, a first bearing, a fan blade, a first waterproof piece and a second waterproof piece.

[0007] The first waterproof piece is located at the joint of the rotating shaft, the first bearing and the fan blade, the first bearing is sleeved on the rotating shaft, and the rotating shaft is inserted into the fan blade.

[0008] The second waterproof piece is located between the first bearing and the fan rear cover.

[0009] As a further improvement of the utility model technical scheme, the utility model further comprises a third waterproof piece and a fan bottom cover, and the third waterproof piece is located between the fan rear cover and the fan bottom cover.

[0010] As a further improvement of the utility model technical scheme, the utility model further comprises a fourth waterproof piece, and the fourth waterproof piece is fixedly connected with the fan rear cover.

[0011] As a further improvement of the utility model technical scheme, the first waterproof piece, the second waterproof piece, the third waterproof piece and the fourth waterproof piece are all rubber sealing rings.

[0012] The blower fan suitable for the waterproof structure of the blower fan further comprises a motor, the motor comprises a stator, a rotor and a rotating shell, the stator is fixedly connected with the fan rear cover, the rotor is sleeved on the stator, the rotor is fixedly connected with the rotating shell, and the rotating shell is fixedly connected with the rotating shaft.

[0013] As a further improvement of the utility model technical scheme, the waterproof structure of the blower fan further comprises a second bearing and a third bearing, the second bearing and the third bearing are both sleeved on the rotating shaft, and the second bearing is fixedly connected with the fan rear cover.

[0014] As a further improvement of the utility model technical scheme, the waterproof structure of the blower fan further comprises a fan upper cover, the fan blade is located in the fan upper cover, and the fan upper cover is fixedly connected with the fan rear cover.

[0015] As a further improvement of the utility model technical scheme, the fan upper cover comprises an air inlet and an air outlet, and the air inlet is communicated with the air outlet through the inner cavity of the fan upper cover.

[0016] As a further improvement of the utility model technical scheme, the waterproof structure of the blower fan further comprises a main board, and the main board is fixedly arranged in the fan rear cover.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The waterproof structure of the blower fan comprises a rotating shaft, a first bearing, a fan blade, a second bearing, a third bearing, a fan rear cover, a first waterproof piece, a second waterproof piece and a motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model discloses a blower fan waterproof structure, which belongs to the technical field of blower fans.

[0020] Fig. 1 It is the structure schematic diagram of the waterproof structure of the blower fan of the utility model;

[0021] Fig. 2 It is the local enlarged structure schematic diagram of the waterproof structure of the blower fan of the utility model;

[0022] Fig. 3 It is the structure schematic diagram of the blower fan of the utility model.

[0023] In the drawing:

[0024] 1, fan rear cover; 2, rotating shaft; 3, first bearing; 4, fan blade; 5, first waterproof part; 6, second waterproof part; 7, third waterproof part; 8, fourth waterproof part; 9, motor; 91, stator; 92, rotor; 93, rotating shell; 10, second bearing; 11, third bearing; 12, fan upper cover; 121, air inlet; 122, air outlet; 13, fan bottom cover; 14, mainboard. DETAILED DESCRIPTION

[0025] The concept, specific structure and generated technical effects of the utility model will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The same reference signs used in the drawings indicate the same or similar parts.

[0026] It should be noted that, unless otherwise specified, when a certain feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right and other descriptions used in the utility model are only relative to the mutual position relationship of the components of the utility model in the drawings.

[0027] REFERENCE Figs. 1 to 3 A waterproof structure of a blower, comprising a fan rear cover 1, a rotating shaft 2, a first bearing 3, a fan blade 4, a first waterproof part 5 and a second waterproof part 6.

[0028] In one embodiment, the first waterproof part 5 is located at the joint of the rotating shaft 2, the first bearing 3 and the fan blade 4, the first bearing 3 is sleeved on the rotating shaft 2, and the rotating shaft 2 is inserted into the fan blade 4; the second waterproof part 6 is located between the first bearing 3 and the fan rear cover 1.

[0029] Among them, by setting the first waterproof part 5 at the joint of the rotating shaft 2, the first bearing 3 and the fan blade 4, water is prevented from penetrating into the fan rear cover 1 from the gap between the fan blade 4, the first bearing 3 and the rotating shaft 2; the second waterproof part 6 is arranged between the first bearing 3 and the fan rear cover 1, so as to prevent water from penetrating into the motor 9 from between the first bearing 3 and the fan rear cover 1. The waterproof structure of the blower of the utility model has the characteristics of preventing water from entering the inside of the blower.

[0030] In one embodiment, the waterproof structure further comprises a third waterproof part 7 and a fan bottom cover 13, and the third waterproof part 7 is located between the fan rear cover 1 and the fan bottom cover 13.

[0031] In one embodiment, the waterproof structure further comprises a fourth waterproof part 8, and the fourth waterproof part 8 is fixedly connected with the fan rear cover 1.

[0032] Preferably, the first waterproof member 5, the second waterproof member 6, the third waterproof member 7 and the fourth waterproof member 8 are all rubber sealing rings, and waterproof structures are provided at four places where water leakage is likely to occur.

[0033] The blower further comprises a motor 9, the motor 9 comprising a stator 91, a rotor 92 and a rotating shell 93, the stator 91 being fixedly connected with the rear cover 1, the rotor 92 being sleeved on the stator 91, the rotor 92 being fixedly connected with the rotating shell 93, and the rotating shell 93 being fixedly connected with the rotating shaft 2. During operation of the blower, the stator 91 in the motor 9 is stationary, the rotor 92 drives the rotating shell 93 to rotate, and the rotating shell 93 drives the rotating shaft 2 to rotate, thereby driving the fan blade 4 to rotate.

[0034] In an embodiment, the blower further comprises a second bearing 10 and a third bearing 11, the second bearing 10 and the third bearing 11 both being sleeved on the rotating shaft 2, and the second bearing 10 being fixedly connected with the rear cover 1. The third bearing 11 is located in the bottom cover 13. When there are only two fulcrums, i.e., the first bearing 3 and the second bearing 10, the blower will shake greatly and generate a large centrifugal force when the rotating speed is higher than 2500 rpm. Therefore, the third bearing 11 is added to increase an external fulcrum, thereby solving the problem of shaking of the blower at high rotating speed and large torque.

[0035] In an embodiment, the blower further comprises an upper cover 12, the fan blade 4 being located in the upper cover 12, and the upper cover 12 being fixedly connected with the rear cover 1. The upper cover 12 comprises an air inlet 121 and an air outlet 122, and the air inlet 121 is in communication with the air outlet 122 through an inner cavity of the upper cover 12.

[0036] In an embodiment, the blower further comprises a main board 14, the main board 14 being fixedly arranged in the rear cover 1.

[0037] Other contents of the blower are described in the prior art, and will not be described here.

[0038] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

[0039] In addition, the terms "first", "second" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0040] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A waterproof structure for a blower, characterized in that, Comprise: Fan rear cover, rotating shaft, first bearing, fan blade, first waterproof part and second waterproof part; The first waterproof part is located at the joint of the rotating shaft, the first bearing and the fan blade, the first bearing is sleeved on the rotating shaft, and the rotating shaft is inserted into the fan blade; The second waterproof part is located between the first bearing and the fan rear cover.

2. The waterproof structure of the blower according to claim 1, wherein Further comprising third waterproof part and fan bottom cover, the third waterproof part is located between the fan rear cover and the fan bottom cover.

3. The waterproof structure of the blower according to claim 2, wherein Further comprising fourth waterproof part, the fourth waterproof part is fixedly connected with the fan rear cover.

4. The waterproof structure of the blower according to claim 3, wherein The first waterproof part, the second waterproof part, the third waterproof part and the fourth waterproof part are all rubber sealing rings.

5. A blower suitable for the waterproof structure of the blower according to any one of claims 1 to 4, characterized by, Further comprising motor, the motor comprises stator, rotor and rotating shell, the stator is fixedly connected with the fan rear cover, the rotor is sleeved on the stator, the rotor is fixedly connected with the rotating shell, and the rotating shell is fixedly connected with the rotating shaft.

6. A blower according to claim 5, wherein Further comprising second bearing and third bearing, the second bearing and the third bearing are both sleeved on the rotating shaft, and the second bearing is fixedly connected with the fan rear cover.

7. A blower as claimed in claim 5, wherein Further comprising fan upper cover, the fan blade is located in the fan upper cover, and the fan upper cover is fixedly connected with the fan rear cover.

8. A blower according to claim 7, wherein The fan upper cover comprises air inlet and air outlet, and the air inlet communicates with the air outlet through the inner cavity of the fan upper cover.

9. A blower as claimed in claim 5, wherein Further comprising main board, the main board is fixedly arranged in the fan rear cover.

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