CN210115125U

CN210115125U - Paper shredder with air cooling device

Info

Publication number: CN210115125U
Application number: CN201822122458.0U
Authority: CN
Inventors: 李育成
Original assignee: DONGGUAN HUANG LEE ELECTRIC Co Ltd
Current assignee: DONGGUAN HUANG LEE ELECTRIC Co Ltd
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-02-28
Anticipated expiration: 2028-12-17

Abstract

The utility model relates to the technical field of office supplies, in particular to a paper shredder with an air cooling device and capable of prolonging the working time. This kneader with air-cooling device includes: the paper shredder comprises a shell, a cutter shaft assembly for shredding paper and a motor assembly for driving the cutter shaft assembly, wherein the cutter shaft assembly and the motor assembly are arranged in the shell; outside air is sucked in from the air inlet through the air inlet fan, passes through the motor assembly, and is exhausted from the air outlet through the exhaust fan. The utility model discloses be provided with into fan and exhaust fan in the casing of kneader, the outside air is inhaled through the air inlet fan, behind motor element, discharges through the exhaust fan to accomplish the cooling to motor element, thereby reduce motor element's operating temperature, prolong its operating time.

Description

Paper shredder with air cooling device

The technical field is as follows:

the utility model relates to the technical field of office supplies, in particular to a paper shredder with an air cooling device and capable of prolonging the working time.

Background art:

paper shredders typically include a housing, a motor, a knife shaft assembly, and electronics. The motor drives the cutter shaft assembly to rotate, so that the paper is cut up. Generally, the power of the shredder is not large, so the motor is generally driven by a low-power motor. However, since the low-power motor has low efficiency and a fast temperature rise, a general shredder has a short operation time due to the problem of heat generation of the motor, and cannot operate for a long time. Thus, it is difficult to meet the market demand.

To meet market demands, the shortcomings of current power motors must be overcome, thereby extending shredder operation time. The present inventors have made the following contrivances in view of the above object

The utility model has the following contents:

the utility model aims to solve the technical problem that the not enough of prior art is just overcome, provides the kneader that has air cooling device, carries out timely cooling to the motor in the kneader through air cooling device to the operating time of extension kneader.

In order to solve the technical problem, the utility model discloses a following technical scheme: this kneader with air-cooling device includes: the paper shredder comprises a shell, a cutter shaft assembly for shredding paper and a motor assembly for driving the cutter shaft assembly, wherein the cutter shaft assembly is driven to rotate by the motor assembly; outside air is sucked in from the air inlet through the air inlet fan, passes through the motor assembly, and is exhausted from the air outlet through the exhaust fan.

Further, in the above technical solution, the housing includes a lower housing and an upper housing which are mutually covered and matched.

Further, in the above technical solution, the air inlet and the air outlet are respectively formed on the side and the rear of the lower housing.

Furthermore, in the above technical solution, the air intake fan is fixed on the inner side of the lower shell; the exhaust fan is fixed on the lower side of the upper shell.

Further, in the above technical solution, the motor assembly includes: the motor core and cover establish the cover body in the outside of motor core, this cover body rear end face is seted up and is covered with the body air intake, and the surface of the front end of this cover body is seted up and is covered with the body air outlet.

Further, in the above technical solution, the air inlet of the hood body corresponds to the position of the air inlet fan; the air outlet of the cover body corresponds to the position of the exhaust fan.

Furthermore, in the above technical solution, the cover body is cylindrical, and the air inlet of the cover body is arranged on the circular bottom surface of the back of the cover body; the air outlet of the cover body is arranged on the circumferential surface of the front end of the cover body.

Further, in the above technical solution, the upper housing extends downward to form a wind deflector.

Furthermore, in the above technical solution, the exhaust fan is fixed at the lower side of the upper casing, the exhaust fan adopts a centrifugal fan, an air inlet position of the exhaust fan corresponds to an air outlet position of the cover body, and an air outlet position of the exhaust fan corresponds to the air outlet through an air exhaust duct.

After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: the utility model discloses be provided with into fan and exhaust fan in the casing of kneader, the outside air is inhaled through the air inlet fan, behind motor element, discharges through the exhaust fan to accomplish the cooling to motor element, thereby reduce motor element's operating temperature, prolong its operating time. Additionally, the utility model discloses a further improve cooling efficiency, adopted inside and outside two air currents respectively to motor element inside and outside refrigerated scheme respectively, can further accelerate cooling rate like this, improve cooling efficiency.

Description of the drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a perspective view of another perspective of the present invention;

FIG. 3 is a perspective view of the internal structure of the present invention;

fig. 4 is an exploded perspective view of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

As shown in fig. 1-4, the present invention relates to a paper shredder with an air cooling device, which comprises: casing 1, arbor subassembly 2, motor element 3, air inlet fan 4 and exhaust fan 5. The cutter shaft assembly 2, the motor assembly 3, the air inlet fan 4 and the exhaust fan 5 are all arranged in the shell 1 to form a paper shredder body. When the paper feeding device is used, the motor assembly 3 drives the cutter shaft assembly 2 to rotate, and paper fed from the paper feeding port 101 in the upper end face of the shell 1 is crushed by the cutter shaft assembly 2 and then is discharged from the paper discharging port 102 in the lower end face of the shell 1. To receive shredded paper, the shredder body is typically mounted over a shredder basket to form a complete shredder.

Referring to fig. 1, an air inlet 111 and an air outlet 112 are formed in a side surface of the housing 1, and the air inlet fan 4 is disposed at a position corresponding to the air inlet 111. The exhaust fan 5 is arranged at a position corresponding to the air outlet 112. Thus, the external air is sucked in from the air inlet 111 through the air inlet fan 4, passes through the motor module 3, and is then exhausted from the air outlet 112 through the air outlet fan 5, thereby cooling the motor module 3.

Referring to fig. 4, the housing 1 includes a lower housing 11 and an upper housing 12 which are covered and matched with each other. The air inlet 111 and the air outlet 112 are respectively formed on the side and the rear of the lower housing 11. Meanwhile, the air inlet fan 4 is fixed on the inner side of the lower shell 11; the exhaust fan 5 is fixed on the lower side of the upper shell 12. The utility model discloses in, air inlet fan 4 adopt axial fan, the direction of its air inlet, the direction of air-out are marchd along axial direction. The exhaust fan 5 is a centrifugal fan, i.e. the air inlet direction is perpendicular to the air outlet direction. This design is used for better cooling of the motor assembly 3.

As shown in fig. 4, in the present invention, the motor assembly 3 includes: a motor core and a cover 30 covering the motor core. The motor assembly 3 and the front end of the arbor shaft assembly 2 are connected together by a connecting plate 6, and the motor core drives the arbor shaft assembly 2 usually by gears. Although the cover 30 is provided to protect the motor core, it also makes it difficult to dissipate heat generated by the motor core during operation.

In order to facilitate heat dissipation of the motor core, generally, a cover air inlet 31 is formed in a rear end surface (end far away from the connecting plate 6) of the cover 30, and a cover air outlet 32 is formed in a surface of a front end (end near the connecting plate 6) of the cover 30. In combination with the present embodiment, the cover body 30 is cylindrical, and the cover body air inlet 31 is opened on the circular bottom surface of the back of the cover body 30; the hood outlet 32 is formed on the circumferential surface of the front end of the hood 30.

As shown in fig. 2 and 4, in order to better cool the motor assembly 3, the cover air inlet 31 corresponds to the position of the intake fan 4; the hood outlet 32 corresponds to the position of the exhaust fan 5. The cooling process is as follows:

first, the external air is sucked from the air inlet 111 through the air inlet fan 4 to the inner cavity of the housing 1.

Secondly, the airflow entering the interior of the shell 1 is divided into two airflows, wherein the first airflow enters the interior of the cover body 30 through the cover body air inlet 31 to cool the motor core, then runs forwards from the rear end of the cover body 30, passes through the gaps of the stator, the rotor and other components in the motor core until being discharged from the air outlet 32 of the cover body 30, and returns to the interior of the shell 1 again; the second stream flows directly along the exterior of the shroud 30, cools the exterior of the shroud 30 directly, and then travels along the exterior of the shroud 30 until it merges with the first stream.

Finally, the merged air flow is located right under the exhaust fan 5, so that the exhaust fan 5 sucks the merged air flow and discharges the sucked merged air flow through the air outlet 112, thereby completing the cooling of the motor assembly 3.

According to the description to the above-mentioned cooling process, in order to guide the air current, prevent the cold air that gets into in the casing 1 from scurrying in disorder, the utility model discloses a following structure:

1. as shown in fig. 2, a wind deflector 121 is formed extending downward from the inner surface of the upper case 12. The wind shield 121 is matched with a side plate at a corner of the lower housing 11 to enclose the air intake fan 4 and the rear end of the cover 30 to form a relatively isolated space, and after external air flows enter the space through the air intake fan 4, the external air flows are collected in the space, and then the first air flow enters the cover 30. Since the wind deflector 121 does not extend completely down to the bottom surface of the lower housing 11, there is still a passage a for the air flow to pass through below the hood 30, and the second air flow will flow backwards through the passage a, pass under the hood 30, cool the hood 30, and finally join the first air flow.

2. Because the trend that gas becomes the back and upwards move, and the utility model discloses set up the trailing flank at casing 1 during well air outlet 112, so the utility model discloses well exhaust fan 5 adopts centrifugal fan, will follow the air current that vertical direction got into through centrifugal fan, discharges along the horizontal direction. As shown in connection with fig. 4. The exhaust fan 5 has centrifugal blades 50 and a fan housing 52. The exhaust fan 5 is fixed on the lower side of the upper casing 12, and the air inlet position of the fan casing 52 corresponds to the position of the cover body air outlet 32, that is, is located above the cover body air outlet 32. The air outlet position of the exhaust fan 5 is communicated with the air outlet 112 through an exhaust air duct 51. Therefore, the hot air collected by the two air flows can be directly discharged through the air outlet 112.

Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

Claims

1. A paper shredder with an air cooling device, comprising: casing (1) to and install arbor subassembly (2) and the motor element (3) of drive arbor subassembly (2) that the shredded paper of casing (1) was used, drive arbor subassembly (2) through motor element (3) and rotate, the paper that is sent into by paper feed mouth (101) of casing (1) up end is smashed the back through arbor subassembly (2) and is sent out by exit slot (102) of casing (1) lower terminal surface, its characterized in that:

an air inlet (111) and an air outlet (112) are formed in the side surface of the shell (1), an air inlet fan (4) is arranged in the shell (1) corresponding to the air inlet (111), and an exhaust fan (5) is arranged in the shell (1) corresponding to the air outlet (112);

outside air is sucked in from the air inlet (111) through the air inlet fan (4), passes through the motor assembly (3), and is exhausted from the air outlet (112) through the exhaust fan (5).

2. The shredder with air cooling device according to claim 1, characterized in that: the shell (1) comprises a lower shell (11) and an upper shell (12) which are mutually covered and matched.

3. The shredder with air cooling device according to claim 2, characterized in that: the air inlet (111) and the air outlet (112) are respectively formed on the side surface and the rear surface of the lower shell (11).

4. The shredder with air cooling device according to claim 2, characterized in that: the air inlet fan (4) is fixed on the inner side of the lower shell (11); the exhaust fan (5) is fixed on the lower side of the upper shell (12).

5. The paper shredder with air cooling device according to any one of claims 2 to 4, characterized in that: the motor assembly (3) comprises: the motor core and cover body (30) that cover established in the motor core outside, this cover body (30) rear end face is seted up cover body air intake (31), and cover body air outlet (32) are seted up to the surface of the front end of this cover body (30).

6. The shredder with air cooling device according to claim 5, characterized in that: the air inlet (31) of the cover body corresponds to the position of the air inlet fan (4); the air outlet (32) of the cover body corresponds to the position of the exhaust fan (5).

7. The shredder with air cooling device according to claim 5, characterized in that: the cover body (30) is cylindrical, and the cover body air inlet (31) is formed in the circular bottom surface of the back of the cover body (30); the cover body air outlet (32) is arranged on the circumferential surface of the front end of the cover body (30).

8. The shredder with air cooling device according to claim 7, characterized in that: the upper shell (12) extends downwards to form a wind shield (121).

9. The shredder with air cooling device according to claim 5, characterized in that: exhaust fan (5) fix at last casing (12) downside, this exhaust fan (5) adopt centrifugal fan, the air inlet position of this exhaust fan (5) corresponds cover body air outlet (32) position, the air-out position of this exhaust fan (5) corresponds with air outlet (112) through an air flue (51) of airing exhaust.