Fan blade assembly of automobile electronic fan

Abstract

The utility model discloses a fan blade assembly of an automobile electronic fan, and relates to the technical field of automobile radiators. The electronic fan comprises an electronic fan shell and a motor protection shell, a perforated plate is welded to one end of the electronic fan shell in a penetrating mode, a ventilation pipe is arranged in the center in the electronic fan shell, a second flow guide frame is fixedly welded to one end of the ventilation pipe, and the other end, opposite to the ventilation pipe, of the second flow guide frame is fixedly welded to one side in the electronic fan shell; and the perforated plate is communicated with the second flow guide frame in a penetrating manner, and a motor protection shell is inserted into the ventilation pipe. By arranging the electronic fan shell and the motor protection shell, the problems that the air velocity is low due to the fact that the air outlet area of a fan blade assembly of an automobile electronic fan is large, the air velocity can be increased, the area of the fan blade assembly can be reduced and the use expenditure of the electronic fan can be increased only by increasing the rotating speed of fan blades are solved, and due to the fact that the size of a motor is small, the cost is low are solved. And the air flow passing through the electronic fan is difficult to effectively cool the motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile radiators, in particular to a fan blade assembly of an automobile electronic fan. Background Art

[0002] The car radiator is the cooling system of the car. The radiator in the engine water cooling system consists of three parts: the water inlet chamber, the water outlet chamber, the main plate and the radiator core. The coolant flows in the radiator core, and the air passes outside the radiator core. The hot coolant cools down due to the heat dissipation to the air, and the cold air heats up due to the absorption of the heat dissipated by the coolant. Therefore, the radiator is a heat exchanger. In order to improve the heat dissipation efficiency of the radiator, an electronic fan is usually used to drive the rapid flow of air. The fan blade assembly is an important component structure of the electronic fan, but it still has the following disadvantages in actual use:

[0003] 1. The utility model with publication number CN202926713U discloses a vehicle cooling electronic fan blade assembly, wherein the blade is arc-shaped, and a plurality of saw teeth are arranged on the windward edge of the blade; a fixing ring is also arranged on the outer side of the blade, and the fixing ring has a flange extending outward, so that the cross section of the fixing ring is L-shaped, and the end of the blade away from the blade seat is fixedly connected to the inner side of the fixing ring, and when the fan blade assembly is designed and produced, the air outlet area of ​​the fan blade assembly often needs to be close to the side area of ​​the radiator core to ensure that the airflow can fully contact the surface of the radiator core, but a large air outlet area will lead to a decrease in airflow speed, so it is necessary to increase the power of the motor to increase the rotation speed of the fan blade, thereby increasing the air flow rate. By increasing the power, not only the life of the fan blade assembly is reduced, but also the use cost of the electronic fan is greatly increased;

[0004] 2. When the electronic fan is in use, the airflow is often used to cool the motor casing, thereby further cooling the motor to prevent the motor from overheating and causing the electronic fan to overheat. However, in actual use, due to the small size of the motor and the large size of the fan blades, the airflow passing through the outside of the motor is small and the cooling effect is poor. Utility Model Content

[0005] The purpose of the utility model is to provide a fan blade assembly for an automobile electronic fan. Through the electronic fan housing and the motor protection housing, the problem that the fan blade assembly of the automobile electronic fan has a large air outlet area, resulting in a low air flow rate, and the air flow rate can only be increased by increasing the fan blade speed, thereby reducing the area of ​​the fan blade assembly and increasing the use cost of the electronic fan. In addition, due to the small size of the motor, the airflow through the electronic fan is difficult to effectively cool the motor.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a fan blade assembly of an automotive electronic fan, comprising an electronic fan housing and a motor protection housing, wherein a porous plate is welded through one end of the electronic fan housing, a ventilation pipe is centrally arranged in the electronic fan housing, a second guide frame is welded and fixed to one end of the ventilation pipe, the second guide frame is welded and fixed to one side of the electronic fan housing relative to the other end of the ventilation pipe, the porous plate is connected through the second guide frame, the ventilation pipe is plugged with a motor protection housing, and a fan blade body is arranged at one end of the motor protection housing;

[0008] When the fan blade body is driven to rotate by the rotating motor, air enters the outer casing of the electronic fan and passes through the ventilation pipe with a smaller cross-sectional area. Due to the small cross-sectional area of ​​the ventilation pipe, the air flow rate is increased, so that the air can flow quickly to cool the radiator core, and there is no need to significantly increase the rotation speed of the fan blade body, thereby extending the service life of the fan blade assembly and reducing usage expenses. The air can be evenly diverted through the porous plate so that the air can be evenly blown to the surface of the radiator core. At the same time, when the air passes through the ventilation pipe quickly, due to the small cross-sectional area of ​​the ventilation pipe, the airflow can fully contact the motor protective shell, thereby cooling the motor protective shell, and further cooling the rotating motor to avoid overheating of the rotating motor.

[0009] Furthermore, mounting frames are welded and fixed at both ends of the outer side of the electronic fan housing, and a dustproof net is clamped and fixed on one side of the electronic fan housing, and the dustproof net is located on the other side of the electronic fan housing relative to the porous plate;

[0010] The dustproof net can prevent dust in the air from entering the electronic fan housing, prevent dust particles from colliding and rubbing against the fan blade body, extend the service life of the fan blade body, and prevent dust particles from clogging the radiator core.

[0011] Furthermore, the ventilation pipe is welded and fixed with a first guide frame at the other end relative to the second guide frame, the first guide frame is welded and fixed to one side of the electronic fan housing relative to the other end of the ventilation pipe, and the dustproof net is connected to the first guide frame through and through;

[0012] When the fan blade body is driven to rotate by the rotating motor, air enters the electronic fan housing and passes through the ventilation duct with a smaller cross-sectional area. Due to the small cross-sectional area of ​​the ventilation duct, the air flow rate is increased, so that the air can flow quickly to cool the radiator core. There is no need to significantly increase the rotation speed of the fan blade body, thereby extending the service life of the fan blade assembly and reducing usage expenses. The air can be evenly diverted through the porous plate so that the air can be evenly blown to the surface of the radiator core.

[0013] Furthermore, a rotating motor is clamped and fixed in the motor protection shell, a rotating shaft is clamped at one end of the rotating motor, the fan blade body is clamped and fixed to the outer peripheral surface of the rotating shaft, the rotating shaft penetrates and is inserted into one end of the motor protection shell, and the fan blade body is inserted into the first guide frame;

[0014] The rotating motor can drive the shaft to rotate, further drive the fan blade body to rotate, drive air flow to cool the radiator core, and the motor protection shell can protect the rotating motor to prevent dust and moisture in the air from damaging the rotating motor.

[0015] Furthermore, a heat dissipation fin is welded and fixed on the outer peripheral surface of the motor protection shell, and the heat dissipation fin is clamped and fixed to the inner wall of the ventilation pipe relative to the other end of the motor protection shell;

[0016] The heat dissipation area of ​​the motor protection case can be increased by the heat dissipation fins. When the airflow passes through the inside of the ventilation duct, the airflow can fully contact the motor protection case due to the small cross-sectional area of ​​the ventilation duct, thereby cooling the motor protection case and further cooling the rotating motor to prevent the rotating motor from overheating.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model solves the problem that the air outlet area of ​​the fan blade assembly often needs to be close to the side area of ​​the radiator core to ensure that the airflow can fully contact the surface of the radiator core, but a large air outlet area will lead to a decrease in air flow speed, so it is necessary to increase the power of the motor to increase the rotation speed of the fan blade, and then increase the air flow rate. By increasing the power, not only the life of the fan blade assembly is reduced, but also the use cost of the electronic fan is greatly increased. When air enters the electronic fan housing and passes through the ventilation pipe with a smaller cross-sectional area, the air flow rate is increased due to the smaller cross-sectional area of ​​the ventilation pipe, so that the air can flow quickly to cool the radiator core, and there is no need to significantly increase the rotation speed of the fan blade body, thereby extending the service life of the fan blade assembly and reducing the use cost.

[0019] 2. The utility model solves the problem that when the electronic fan is in use, the motor housing is often cooled by airflow at the same time, and the motor is further cooled to avoid overheating of the motor and causing overheating protection of the electronic fan by arranging an electronic fan housing and a motor protection housing. However, in actual use, due to the small size of the motor and the large size of the fan blades, the airflow passing through the outside of the motor is small and the cooling effect is poor. When the air passes quickly through the ventilation duct with a small cross-sectional area, the airflow can fully contact the motor protection housing, cool the motor protection housing, and further cool the rotating motor to avoid overheating of the rotating motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the electronic fan housing of the utility model;

[0022] Figure 3 It is a cross-sectional view of the housing of the electronic fan of the utility model;

[0023] Figure 4 It is a cross-sectional view of the motor protection shell of the utility model.

[0024] Reference numerals:

[0025] 1. Electronic fan housing; 101. Dust screen; 102. Perforated plate; 103. Mounting frame; 104. First air guide frame; 105. Ventilation duct; 106. Second air guide frame; 2. Motor protection housing; 201. Rotating shaft; 202. Fan blade body; 203. Rotating motor; 204. Heat dissipation fins. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] See also Figure 1-4 As shown, the utility model is a fan blade assembly of an automotive electronic fan, comprising an electronic fan housing 1 and a motor protection housing 2, wherein a porous plate 102 is welded through one end of the electronic fan housing 1, a ventilation pipe 105 is centrally arranged in the electronic fan housing 1, a second guide frame 106 is welded and fixed to one end of the ventilation pipe 105, the second guide frame 106 is welded and fixed to one side of the electronic fan housing 1 relative to the other end of the ventilation pipe 105, the porous plate 102 and the second guide frame 106 are connected through and through, the motor protection housing 2 is inserted in the ventilation pipe 105, and a fan blade body 202 is arranged at one end of the motor protection housing 2;

[0028] After the fan blade assembly is installed and fixed on one side of the radiator core, when it is necessary to dissipate the heat of the liquid passing through the radiator core, the rotating motor 203 is controlled to drive the fan blade body 202 to rotate, thereby further driving the air into the electronic fan housing 1. When the air enters the ventilation pipe 105 with a smaller cross-sectional area, the air flow rate is increased, and the motor protection shell 2 is quickly cooled. After entering the second guide frame 106, the air flow is evenly diverted through the porous plate 102, so that the air is evenly blown to the surface of the radiator core.

[0029] Among them Figure 1-3As shown, mounting frames 103 are welded and fixed at both ends of the outer side of the electronic fan housing 1, a dust screen 101 is clamped and fixed on one side of the electronic fan housing 1, and the dust screen 101 is located on the other side of the electronic fan housing 1 relative to the porous plate 102, and a first guide frame 104 is welded and fixed at the other end of the ventilation pipe 105 relative to the second guide frame 106, and the first guide frame 104 is welded and fixed to one side of the electronic fan housing 1 relative to the other end of the ventilation pipe 105, and the dust screen 101 and the first guide frame 104 are connected through the inside;

[0030] The fan blade assembly is installed on one side of the radiator core by bolts passing through the mounting frame 103. When the liquid passing through the radiator core needs to be cooled, the rotation of the fan blade body 202 drives the air to flow. The air is filtered through the dustproof net 101 and enters the first guide frame 104, and then enters the ventilation pipe 105 with a smaller cross-sectional area, so that the air flow rate is increased. When the airflow enters the second guide frame 106, the air is evenly diverted through the porous plate 102, so that the air is evenly blown to the surface of the radiator core.

[0031] Among them Figure 1 , 4 As shown, a rotating motor 203 is clamped and fixed in the motor protection shell 2, a rotating shaft 201 is clamped at one end of the rotating motor 203, a fan blade body 202 is clamped and fixed to the outer peripheral surface of the rotating shaft 201, the rotating shaft 201 penetrates and is plugged into one end of the motor protection shell 2, the fan blade body 202 is plugged into the first guide frame 104, and a heat dissipation fin 204 is welded and fixed to the outer peripheral surface of the motor protection shell 2, and the heat dissipation fin 204 is clamped and fixed to the inner wall of the ventilation pipe 105 relative to the other end of the motor protection shell 2;

[0032] The rotating motor 203 drives the rotating shaft 201 to rotate, further drives the fan blade body 202 to rotate, and drives the air to flow. When the air enters the ventilation pipe 105, the heat dissipation fins 204 increase the heat dissipation area of ​​the motor protective shell 2, and the fast-flowing air cools down the motor protective shell 2, further cooling the rotating motor 203.

[0033] The specific working principle of the utility model is as follows: the fan blade assembly is installed on one side of the radiator core by bolts passing through the mounting frame 103. When the liquid passing through the radiator core needs to be cooled, the rotating motor 203 drives the rotating shaft 201 to rotate, further drives the fan blade body 202 to rotate, drives the air flow, and the air is filtered through the dustproof net 101 and enters the first guide frame 104, and then enters the ventilation pipe 105 with a smaller cross-sectional area, so that the air flow rate is increased, and the fast-flowing air cools the motor protection shell 2, and further cools the rotating motor 203. When the airflow enters the second guide frame 106, the air is evenly diverted through the porous plate 102, so that the air is evenly blown to the surface of the radiator core.

[0034] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A fan blade assembly of an automotive electronic fan, comprising an electronic fan housing (1) and a motor protection housing (2), characterized in that: A porous plate (102) is welded through one end of the electronic fan housing (1); a ventilation pipe (105) is arranged in the center of the electronic fan housing (1); a second guide frame (106) is welded and fixed to one end of the ventilation pipe (105); the second guide frame (106) is welded and fixed to one side of the electronic fan housing (1) relative to the other end of the ventilation pipe (105); the porous plate (102) and the second guide frame (106) are connected through the inside; a motor protection shell (2) is inserted into the ventilation pipe (105); and a fan blade body (202) is arranged at one end of the motor protection shell (2).

2. The fan blade assembly of an automotive electronic fan according to claim 1, characterized in that: Mounting frames (103) are welded and fixed at both ends of the outer side of the electronic fan housing (1), and a dustproof net (101) is clamped and fixed on one side of the electronic fan housing (1). The dustproof net (101) is located on the other side of the electronic fan housing (1) relative to the porous plate (102).

3. The fan blade assembly of an automotive electronic fan according to claim 2, characterized in that: The other end of the ventilation pipe (105) relative to the second air guide frame (106) is welded and fixed with a first air guide frame (104); the other end of the first air guide frame (104) relative to the ventilation pipe (105) is welded and fixed to one side of the electronic fan housing (1); the dustproof net (101) and the first air guide frame (104) are connected through the inside.

4. The fan blade assembly of an automotive electronic fan according to claim 3, characterized in that: A rotating motor (203) is clamped and fixed in the motor protection shell (2), a rotating shaft (201) is clamped at one end of the rotating motor (203), the fan blade body (202) is clamped and fixed to the outer peripheral surface of the rotating shaft (201), the rotating shaft (201) penetrates and is plugged into one end of the motor protection shell (2), and the fan blade body (202) is plugged into the first flow guide frame (104).

5. The fan blade assembly of an automotive electronic fan according to claim 1, characterized in that: A heat dissipation fin (204) is welded and fixed to the outer peripheral surface of the motor protection shell (2), and the heat dissipation fin (204) is clamped and fixed to the inner wall of the ventilation pipe (105) at the other end relative to the motor protection shell (2).

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