CN113877686B - Air cooling structure of motor of paper shredder and paper shredder - Google Patents
Air cooling structure of motor of paper shredder and paper shredder Download PDFInfo
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- CN113877686B CN113877686B CN202010629955.9A CN202010629955A CN113877686B CN 113877686 B CN113877686 B CN 113877686B CN 202010629955 A CN202010629955 A CN 202010629955A CN 113877686 B CN113877686 B CN 113877686B
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- shredder
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- air chamber
- air
- lower cover
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- 238000001816 cooling Methods 0.000 title claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000009423 ventilation Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 229920000742 Cotton Polymers 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
- B02C2018/0038—Motor drives
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses an air cooling structure of a shredder motor, which comprises an air chamber, wherein the air chamber is positioned in a cavity between an upper cover and a lower cover of a shredder, the air chamber comprises an air chamber shell and an inner cavity, and at least one part of the shredder motor is positioned in the inner cavity of the air chamber; the inner cavity of the air chamber is a closed space, and the air chamber shell is integrally arranged or connected with the upper cover and/or the lower cover of the shredder; and the air chamber is communicated with the outside of the air chamber through a ventilation mechanism. The independent air chamber is arranged in the cavity between the upper cover and the lower cover of the paper shredder, and the air chamber and the external space realize air circulation, so that a larger air chamber is provided around the motor, a heat dissipation space is formed, and the heat dissipation effect is good.
Description
Technical Field
The invention relates to the field of paper shredders, in particular to an air cooling structure for cooling a motor of a paper shredder and the paper shredder using the air cooling structure.
Background
The paper shredder is an office or household machine, and has the main function of shredding unnecessary files, so that the content in the files is prevented from being seen by other people, and the confidentiality and personal privacy of a company are prevented from being leaked.
The motor in paper shredders is a core component of the product, which drives the operation of the whole product, but is easily damaged by mechanical and thermal stresses, which can be caused by frequent starting, overload, clogging, long-term operation. The source of thermal stress is the thermal effect of the motor current, while mechanical stress is understood to be the operation of the motor, both of which can cause the motor to heat. Therefore, the heat dissipation structure of the motor is an indispensable part of the shredder.
Disclosure of Invention
The invention provides an air cooling structure of a shredder motor and a shredder, which are used for heat dissipation of the shredder motor and have good effect.
The technical scheme of the invention is as follows:
the air cooling structure of the shredder motor is characterized by comprising an air chamber, wherein the air chamber is positioned in a cavity between an upper cover and a lower cover of the shredder, the air chamber comprises an air chamber shell and an inner cavity, and at least one part of the shredder motor is positioned in the inner cavity of the air chamber; the inner cavity of the air chamber is a closed space, and the air chamber shell is integrally arranged or connected with the upper cover and/or the lower cover of the shredder; and the air chamber is communicated with the outside of the air chamber through a ventilation mechanism. The closed space of the inner cavity of the air chamber means that the air chamber is not an open space and has no obvious and large opening, but the air chamber has no strict requirement on the closing, and strict sealing standard is not required to be implemented.
The invention sets a special enclosed air chamber between the upper and lower covers of the shredder, which is used to form a heat dissipation space around at least a part of the exterior of the shredder motor, the heat dissipation structure increases the heat dissipation space and makes the heat dissipation more effective compared with the prior art that the heat dissipation shell is directly set outside the motor; compared with the scheme that the whole cavity of the upper/lower cover of the paper shredder is directly used as a heat dissipation space, the air chamber is not communicated with the spaces such as the paper shredding cutter head, the waste paper barrel and the like, so that the basic sealing is realized, and the heat dissipation efficiency is improved.
The plenum may be a fully self-contained housing or a housing depending from the shredder upper and/or lower cover, and in a preferred embodiment the plenum housing of the plenum consists essentially of a raised rib on the shredder upper and/or lower cover, a portion of a side panel of the shredder upper cover adjacent to the raised rib and capable of forming a closed space with the rib, and a portion of a side panel of the shredder lower cover. In the preferred embodiment, the air chamber is arranged by depending on the structure of the upper cover and/or the lower cover of the shredder, and only a plurality of raised rib plates matched with the upper cover and/or the lower cover of the shredder are arranged on the upper cover and/or the lower cover of the shredder to jointly form a closed space as the air chamber, so that the structure is simple and the manufacture is convenient.
In some embodiments, the raised gusset is integrally formed on the shredder upper cover and/or the shredder lower cover; in other embodiments, the raised gusset is attached to the shredder upper cover and/or the shredder lower cover by a connection structure or connection. The connection of the connecting pieces or by means of a connection structure is for example a snap-on connection or the like.
In some embodiments, a position adjusting mechanism capable of adjusting the relative position of the rib plate on the paper shredder upper cover and/or the paper shredder lower cover is arranged between the rib plate and the paper shredder upper cover and/or the paper shredder lower cover. The position adjusting mechanism is arranged, so that the position of the rib plate can be adjusted, the volume of the air chamber can be adjusted, and the change of heat/temperature of the motor and the change of air discharge quantity of the fan can be better adapted. In addition, the choice of the particular shape and size of the plenum for different shredder motor models is determined by the skilled artisan based on the particular circumstances and the invention is not limited. In some specific embodiments, the position adjustment mechanism may be a latch mechanism, a snap mechanism, or a slide rail mechanism.
In some preferred embodiments, the plenum is selected from one of:
the first air chamber and the air chamber are only enclosed at the front end of the motor, and at least the front end of the motor is provided with a heat radiation hole;
the second air chamber surrounds the front end and the middle part of the motor, and at least the front end and the middle part of the motor are provided with heat dissipation holes;
and the third air chamber surrounds the front end, the middle part and the rear end of the motor, and at the moment, the front end, the middle part and the rear end of the motor are respectively provided with a heat dissipation hole.
The change of the air chamber can be realized by the position adjusting mechanism.
In some embodiments, one or more additional layers are provided on the inside of the inner wall of the plenum housing, said additional layers having fire protection and/or noise reduction. The additional layer can realize fire prevention, noise reduction and the like, and can also adjust the volume of the air chamber so as to better adapt to the change of heat/temperature of the motor and the change of the exhaust air quantity of the fan. The additional layer may be a fireproof foam layer.
In one embodiment, the air chamber comprises a convex rib plate arranged on the upper cover of the shredder and a convex rib plate arranged on the lower cover of the shredder, and the rib plate on the upper cover of the shredder and the rib plate on the lower cover of the shredder are correspondingly adjacent to form a square inner cavity; and the raised rib plates are provided with accommodating grooves for accommodating the motors, and the accommodating grooves are attached to the surfaces of the shells of the motors. The arrangement of the accommodating groove realizes the fixation of the air chamber on the motor and the sealing of the space between the motor and the air chamber.
In a preferred embodiment, a buffer seal, such as a buffer gasket, is provided between the housing groove and the surface of the motor housing, and/or the contact surface of the protruding rib plate on the shredder upper cover and the protruding rib plate on the shredder lower cover are in concave-convex fit. The buffer sealing piece has the functions of sealing, buffering, damping and noise reduction, and the concave-convex matching arrangement can achieve better sealing effect.
In a preferred embodiment, the body of the protruding rib plate is made of fireproof materials, or a fireproof layer is arranged on the inner surface of the protruding rib plate. The fireproof layer may be made of fireproof material. Because the motor can generate heat in operation, the fireproof setting can better ensure safety.
In a preferred embodiment, the ventilation means is one or more vents and/or fans provided in the wall of the plenum, and more preferably in the side panel portion of the shredder upper and/or lower cover. The number of ventilation holes and fans is not particularly limited in the present invention.
In an embodiment, the fan is one, the fan is arranged on the upper cover and/or the lower cover of the shredder, and the fan is set to exhaust air or exhaust air, or is adjusted to exhaust air or exhaust air according to the change of the temperature rise of the motor. The fan is not in direct contact with the motor, so that vibration and resonance of the motor and the fan are reduced, and noise of the whole machine is reduced.
In another embodiment, the two fans are arranged on the upper cover and/or the lower cover of the shredder, the two fans are arranged up and down, the lower fan is used for air inlet, and the upper fan is used for air outlet. The fan is not in direct contact with the motor, so that vibration and resonance of the motor and the fan are reduced, and noise of the whole machine is reduced. And, considering the hot air to rise, set up the lower fan as the best double-bladed arrangement of air inlet.
In a preferred embodiment, the tail end of the motor is provided with an air chamber shell, and a ventilation fan is arranged in the air chamber shell; the interior of the air chamber shell is communicated with the interior of the motor; the air chamber shell is provided with an air opening, and the air opening extends to the outside of the paper shredder; meanwhile, the fan of the ventilation mechanism is arranged on the upper cover and/or the lower cover of the shredder and the arrangement position of the fan corresponds to the front end of the motor, and an air passage is formed among the ventilation fan, the inside of the motor and the fan of the ventilation mechanism. The air passage passes through the inside of the motor, thereby forming an air circulation passage, realizing effective heat dissipation of the inside of the motor and taking away the heat generated in the inside of the motor.
The invention also provides a paper shredder, which is provided with the motor air cooling structure.
Compared with the prior art, the invention has the following beneficial effects:
the invention sets up the independent air chamber in the cavity pocket between upper cover and lower cover of kneader, the air chamber is not installed on motor, but set up on upper cover and/or lower cover of kneader, the size of the air chamber is not limited by motor, the air chamber realizes the air circulation with the external space, can offer the larger air chamber and form the heat dissipation space around motor; in the preferred scheme, the air circulation between the air chamber and the external space is realized through the fan arranged on the air chamber shell, so that the fan is not in direct contact with the motor, the vibration and resonance of the motor and the fan are reduced, and the noise of the whole machine is reduced;
in the preferred embodiment of the invention, the raised rib plates arranged on the upper cover and the lower cover of the shredder and a part of the side plates of the upper cover/lower cover of the shredder are utilized to form an air chamber, the raised rib plates forming the air chamber can be integrally formed with the upper cover/lower cover of the shredder (namely, a part of the upper cover or the lower cover) and form an abutting surface with the surface of the motor shell so as to form a closed cavity space, or the raised rib plates forming the air chamber can be locked on the upper cover or the lower cover of the shredder by a connecting structure or a connecting piece such as a plastic piece, and a rubber ring can be arranged on the plastic piece so as to realize buffering and sealing effects;
thirdly, a soft cushion ring or a soft cushion sleeve with sealing, vibration damping and noise reduction functions is arranged at the joint of the convex rib plate forming the air chamber and the surface of the motor shell, and the convex rib plate is made of fireproof materials, or the inner surface of the air chamber is sprayed with the fireproof materials, or the inner surface of the rib plate is attached with a fireproof cotton layer, so that the paper shredder has the function of fireproof; in addition, the fireproof cotton layer is made of foaming materials, has the effect of reducing noise, and can adjust the space in the air chamber, so that the air chamber is more compact, and the heat dissipation effect is better;
fourthly, the position of the protruding rib plate forming the air chamber on the paper shredder upper cover and/or the paper shredder lower cover can be adjusted through the position adjusting mechanism, so that the adjustment of the position of the rib plate and the adjustment of the volume of the air chamber are realized, and the motor heat/temperature change, the change of the air discharge quantity of the fan and the like are better adapted.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
FIG. 1 is a schematic view of a lower cover of a shredder with a partial plenum according to embodiment 1 of the present invention, with a motor and shredder core hidden;
FIG. 2 is a schematic view of the lower cover of the shredder with a partial plenum according to embodiment 1 of the present invention, with shredder cores hidden;
FIG. 3 is a schematic view of the structure of the upper cover of the shredder with a partial plenum of embodiment 1;
FIG. 4 is a schematic structural view of another embodiment of the rib plate of example 1 of the present invention;
FIG. 5 is a schematic diagram of an air-cooled structure of a shredder motor according to embodiment 2 of the present invention;
the reference numerals in the figures are as follows:
10-upper lumen; 11-a first rib plate; 12-a second rib plate; 13-a third rib plate; 16-a fan; 20-lower lumen; 21-rib plates; 22-rib plates; 23-rib plates; the method comprises the steps of carrying out a first treatment on the surface of the 32-an air chamber housing; 321-tuyere.
Detailed Description
The invention provides an air cooling structure of a shredder motor, which mainly comprises an air chamber, wherein the air chamber is positioned in a cavity between an upper cover and a lower cover of a shredder, the air chamber comprises an air chamber shell and an inner cavity, and at least one part of the shredder motor is positioned in the inner cavity of the air chamber; the inner cavity of the air chamber is a closed space, and the air chamber shell is integrally arranged or connected with the upper cover and/or the lower cover of the shredder; and the air chamber is communicated with the outside of the air chamber through a ventilation mechanism.
The invention sets a special enclosed air chamber between the upper and lower covers of the shredder, which is used to form a heat dissipation space around at least a part of the periphery of the shredder motor, the heat dissipation structure increases the heat dissipation space and makes the heat dissipation more effective compared with the prior art that the heat dissipation shell is directly connected outside the motor; compared with the scheme that the whole cavity of the upper/lower cover of the paper shredder is directly used as a heat dissipation space, the air chamber is not communicated with the spaces such as the paper shredding cutter head, the waste paper barrel and the like, so that the air chamber is basically sealed, and the heat dissipation efficiency is improved.
The invention is further described below in connection with specific examples.
Example 1
Referring to FIGS. 1, 2 and 3, a specific configuration of the plenum of the shredder motor air cooling structure is shown.
Fig. 1 shows a shredder lower cover, in the inner cavity of the shredder lower cover, three rib plates are integrally formed with the shredder lower cover, namely a first rib plate 11, a second rib plate 12 and a third rib plate 13, and the three rib plates are mutually adjacent and form a square inner cavity 10 together with a part of a side plate of the shredder lower cover, which is also called an upper inner cavity 10; wherein, U-shaped notches are respectively arranged on the second rib plate 12 and the third rib plate 13 and are used for being attached to the surface of the motor housing arranged at the position. Referring to fig. 2, in fig. 2, the front end and the rear end of the motor are respectively disposed in the U-shaped notches of the second rib plate 12 and the third rib plate 13.
Fig. 3 shows a shredder upper cover, and at a position corresponding to the inner cavity 10 of the shredder lower cover shown in fig. 1, another square inner cavity 20, also called a lower inner cavity 20, is formed by three-sided rib plates 21, 22, 23 and a part of the side plates of the upper cover. The integral cavity formed by the upper cavity 10 and the lower cavity 20 after being jointed is an air chamber.
Wherein, the joint of the rib plates 11, 12, 13 of the lower cover and the corresponding rib plates 21, 22, 23 of the upper cover is in a concave-convex matching shape, so that a better sealing effect can be obtained.
More preferably, elastic cushions are also arranged between the motor housing and the rib plates of the lower cover (the second rib plate 12 and the third rib plate 13) and the corresponding rib plates 22 and 23 of the upper cover for sealing and buffering. Preferably, the cushion may be annular.
Referring to FIG. 2, an embodiment of the air cooling structure of the shredder motor of the present invention is shown.
In the lower cover of the shredder, a lower cavity 20 with the walls in fit connection is formed by the first rib plate 11, the second rib plate 12, the third rib plate 13 and a part of the side plate of the lower cover of the shredder, which are mutually adjacent, and the side plate of the lower cover of the shredder, which is positioned between the second rib plate 12 and the third rib plate 13, and the motor housing is positioned in the lower cavity 20.
The lower cavity 20 here forms the accommodation space of the motor housing and serves as a part of the heat dissipation space.
And, a fan 16 is fixed on a part of side plates of the paper shredder lower cover serving as the outer shell of the lower inner cavity 20, the fan 16 is arranged in the air chamber, the working state of the fan can be set to exhaust air or wind, and the fan can be adjusted to exhaust air or wind in different time intervals according to the change of the temperature rise of the motor, and the exhaust air or wind suction is equivalent to the forward rotation or the reverse rotation of the fan. In other embodiments, a vortex fan may also be used in place of the fan 16.
A plurality of ventilation holes can be formed on part of the side plates of the paper shredder lower cover serving as the outer shell of the lower inner cavity 20; in addition, the first rib plate 11 may be provided with a plurality of ventilation holes. The two ventilation holes and the fan 16 act together to effectively improve the heat dissipation effect of the air chamber.
Referring to fig. 2, in the present embodiment, a plurality of vent holes 31 are provided at a front end of a housing of the motor 3, and the plurality of vent holes 31 are uniformly arranged along a circumferential direction.
In this embodiment, the air chamber shell of the air chamber for heat dissipation may be made of fireproof material, or a fireproof layer is sprayed on the inner side of the air chamber shell, or a foamed fireproof material layer is adhered or similarly arranged on the inner side of the air chamber shell, so as to achieve the effects of fire prevention and noise reduction, and the purpose of adjusting the internal space (volume) of the air chamber according to the heat dissipation requirement of the motor is achieved by arranging the foamed fireproof material layer, so that the air chamber has better adaptability to different motors and paper shredders, more compact space and higher heat dissipation efficiency.
In addition, the fan 16 of the embodiment is not in direct contact with the motor 3, so that vibration and resonance of the motor 3 and the fan 16 can be reduced, and overall noise is reduced.
The working process of the motor air cooling structure of the embodiment is as follows:
the motor generates heat, the heat is emitted into the wind chamber, then hot air is pumped outwards through the fan 16, or external cold air is blown inwards through the fan 16, so that heat dissipation is realized.
In this embodiment, the first rib plate 11, the second rib plate 12 and the third rib plate 13 on the shredder lower cover forming the air chamber are integrally formed on the shredder lower cover, in an alternative embodiment, as shown in fig. 4, the first rib plate 11, the second rib plate 12 and the third rib plate 13 may be connected to the shredder lower cover through a plurality of connection structures (such as a fastening structure, etc.), and through the arrangement of a plurality of groups of fastening structures, the rib plates may be located at different positions, so as to adjust the volume of the air chamber, so that the air chamber only works at the front end of the motor to dissipate heat, or works at the front end and the middle end of the motor, or works at the front, middle and rear parts of the motor, and corresponding to different situations, the heat dissipation holes provided on the motor housing may be provided at the front end and/or the middle and/or rear end, which are specifically selected and set by those skilled in the art.
Similarly, in the present embodiment, the three-sided ribs 21, 22, 23 on the shredder upper cover that forms the cooling plenum are integrally formed on the shredder upper cover, and in an alternative embodiment, the three-sided ribs 21, 22, 23 may be connected to the shredder upper cover by a connecting structure (e.g., a snap-fit structure, etc.).
In alternative embodiments, the vent holes provided on the plenum housing may be provided on any one or on any number of the side walls, and preferably a plurality of vent holes are provided in the side panel portion of the shredder upper or lower cover for good communication and air communication with the environment.
In an alternative embodiment, where the vent is provided on the outside wall of the plenum, the plenum housing and fan are provided at the rear end of the motor, the fan 16 may not be provided on the plenum.
The embodiment also provides a shredder provided with the shredder motor air cooling structure.
Example 2
Referring to fig. 5, in the present embodiment, two fans 16 are disposed on the outer wall of the heat dissipation air chamber, the two fans 16 are disposed up and down, and considering the rising of hot air, the two fans are disposed up and down, and the lower fan is used for air intake, and the upper fan is used for air outlet, so that an air circulation passage is added, which is the best double-blade arrangement. In addition, two fans 16 may be disposed side-to-side.
In addition, the tail end of the motor 3 of the present embodiment is further provided with an air chamber housing 32, a ventilation fan (not shown in the figure) is arranged in the air chamber housing 32, and the air chamber housing 32 is communicated with the interior of the motor 3 so as to take out the hot air in the motor; the air chamber shell 32 is provided with an air opening 321, and the air opening 321 extends to the outside of the shredder and is directly communicated with the external atmosphere; with the above structure, air forms an air circulation path between the fan 16 and the fan within the plenum housing 32, which passes through the inside of the motor 3, thereby achieving more efficient heat dissipation.
The main heat dissipation path of the air cooling structure of the shredder motor of the embodiment comprises the following air flows: external air enters the motor from the air inlet 321, is sent to the front section of the motor through a fan in the air chamber shell 32, is discharged out of the motor from a plurality of vent holes 31 at the front end of the motor, is sucked through the fan 16, and is discharged into the external atmosphere through the fan 16 and a plurality of vent holes arranged on the side plate of the lower cover of the shredder. Alternatively, the flow direction of the heat dissipation air may be opposite to the above flow direction.
In this embodiment, the middle part of the motor 3 is further provided with one or more groups of heat dissipation holes 31 (angles are not visible in the figure) along the axial direction to achieve better heat dissipation and air flow effects.
The specific structural details and arrangements of the above embodiments 1 and 2 may be combined with each other without conflict, and are not limited to the above-disclosed arrangements.
The invention provides an air cooling structure of a shredder motor, which is mainly characterized in that an independent and closed heat dissipation space (namely an air chamber) is arranged between the motor and an upper cover/lower cover of the shredder, and the heat dissipation space is arranged on the upper cover/lower cover of the shredder instead of the motor, so that the heat dissipation space is larger, the heat dissipation effect is better, and the heat dissipation space realizes the heat dissipation of the motor through the air circulation with the outside.
The specific shape of the enclosed heat dissipating space (plenum) is not particularly limited in the present invention, and embodiment 1 and embodiment 2 provide preferred realization of the heat dissipating space, but the heat dissipating space of the present invention is not limited to the shape and structure shown in the drawings of embodiment 1 and embodiment 2, but is limited to the above main aspects of the invention.
The rib plates forming the heat dissipation space can be integrally formed on the upper cover/lower cover of the shredder, but the invention is not limited to the above, in other embodiments, the rib plates forming the heat dissipation space can also be fixedly connected on the upper cover/lower cover of the shredder in a connecting manner, and a position adjusting mechanism, such as a locking structure, a buckling structure or a sliding rail mechanism, can also be arranged between the rib plates and the upper cover/lower cover of the shredder, so that unknown adjustment of the rib plates is realized, and further, the adjustment of the volume of the air chamber is realized.
The invention can be provided with additional layers such as a fireproof layer, a vibration reduction layer, a noise reduction layer and the like on the inner side of the air chamber shell, and particularly, for example, a fireproof foam layer can simultaneously realize the three purposes.
In summary, the air cooling structure of the shredder motor of the invention has the following characteristics:
the invention sets up the independent air chamber in the cavity pocket between upper cover and lower cover of kneader, the air chamber is not installed on motor, but set up on upper cover and/or lower cover of kneader, the size of the air chamber is not limited by motor, the air chamber realizes the air circulation with the external space, can offer the larger air chamber and form the heat dissipation space around motor; in the preferred scheme, the air circulation between the air chamber and the external space is realized through the fan arranged on the air chamber shell, so that the fan is not in direct contact with the motor, the vibration and resonance of the motor and the fan are reduced, and the noise of the whole machine is reduced;
in the preferred embodiment of the invention, the raised rib plates arranged on the upper cover and the lower cover of the shredder and a part of the side plates of the upper cover/lower cover of the shredder are utilized to form an air chamber, the raised rib plates forming the air chamber can be integrally formed with the upper cover/lower cover of the shredder (namely, a part of the upper cover or the lower cover) and form an abutting surface with the surface of the motor shell so as to form a closed cavity space, or the raised rib plates forming the air chamber can be locked on the upper cover or the lower cover of the shredder by a connecting structure or a connecting piece such as a plastic piece, and a rubber ring can be arranged on the plastic piece so as to realize buffering and sealing effects;
thirdly, a soft cushion ring or a soft cushion sleeve with sealing, vibration damping and noise reduction functions is arranged at the joint of the convex rib plate forming the air chamber and the surface of the motor shell, and the convex rib plate is made of fireproof materials, or the inner surface of the air chamber is sprayed with the fireproof materials, or the inner surface of the rib plate is attached with a fireproof cotton layer, so that the paper shredder has the function of fireproof; in addition, the fireproof cotton layer is made of foaming materials, has the effect of reducing noise, and can adjust the space in the air chamber, so that the air chamber is more compact, and the heat dissipation effect is better;
fourthly, the position of the protruding rib plate forming the air chamber on the paper shredder upper cover and/or the paper shredder lower cover can be adjusted through the position adjusting mechanism, so that the adjustment of the position of the rib plate and the adjustment of the volume of the air chamber are realized, and the motor heat/temperature change, the change of the air discharge quantity of the fan and the like are better adapted.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (14)
1. The air cooling structure of the shredder motor is characterized by comprising an air chamber, wherein the air chamber is positioned in a cavity between an upper cover and a lower cover of the shredder, the air chamber comprises an air chamber shell and an inner cavity, the air chamber at least surrounds the front end of the motor, and at least the front end of the shredder motor is positioned in the inner cavity of the air chamber; the inner cavity of the air chamber is a closed space, and the air chamber shell is integrally arranged or connected with the upper cover and/or the lower cover of the shredder; the air chamber is in air communication with the outside of the air chamber through a ventilation mechanism, the ventilation mechanism comprises a fan and/or a vortex fan, and the fan and/or the vortex fan are arranged on the air chamber wall of the air chamber;
the front end of the motor shell is provided with a plurality of vent holes; the tail end of the motor is provided with an air chamber shell, a ventilation fan is arranged in the air chamber shell, and the inside of the air chamber shell is communicated with the inside of the motor; the air chamber shell is provided with an air opening, and the air opening extends to the outside of the paper shredder; meanwhile, the fan and/or the vortex fan of the ventilation mechanism are/is arranged on the upper cover and/or the lower cover of the shredder and are arranged at positions corresponding to the front end of the motor, and an air passage is formed among the ventilation fan, the motor and the fan of the ventilation mechanism.
2. The shredder motor air cooling structure according to claim 1, wherein the plenum housing of the plenum comprises raised rib plates on the shredder upper cover and/or shredder lower cover, a portion of a side panel of the shredder upper cover adjacent to the raised rib plates and capable of enclosing an enclosed space with the rib plates, and a portion of a side panel of the shredder lower cover.
3. The air cooling structure of a shredder motor according to claim 2, wherein the protruding rib plate is integrally formed on the shredder upper cover and/or the shredder lower cover, or the protruding rib plate is connected and arranged on the shredder upper cover and/or the shredder lower cover through a connecting structure or a connecting piece.
4. The air-cooling structure of shredder motor according to claim 3, wherein a position adjusting mechanism capable of adjusting the relative position of the rib plate on the shredder upper cover and/or the shredder lower cover is provided between the rib plate and the shredder upper cover and/or the shredder lower cover.
5. The shredder motor air cooling structure according to claim 4, wherein the position adjusting mechanism is a locking mechanism, a snap-in mechanism or a slide rail mechanism.
6. The shredder motor air cooling structure according to claim 4, wherein the plenum is selected from one of:
the first air chamber and the air chamber are only enclosed at the front end of the motor, and at least the front end of the motor is provided with a heat radiation hole;
the second air chamber surrounds the front end and the middle part of the motor, and at least the front end and the middle part of the motor are provided with heat dissipation holes;
and the third air chamber surrounds the front end, the middle part and the rear end of the motor, and at the moment, the front end, the middle part and the rear end of the motor are respectively provided with a heat dissipation hole.
7. The shredder motor air cooling structure according to claim 1, wherein the inner wall of the plenum housing is provided with one or more additional layers, said additional layers having fire protection and/or noise reduction.
8. The air cooling structure of a shredder motor according to claim 2, wherein the air chamber comprises a convex rib plate arranged on an upper cover of the shredder and a convex rib plate arranged on a lower cover of the shredder, and the rib plate on the upper cover of the shredder and the rib plate on the lower cover of the shredder are correspondingly adjacent to form a square inner cavity; and the raised rib plates are provided with accommodating grooves for accommodating the motors, and the accommodating grooves are attached to the surfaces of the shells of the motors.
9. The air-cooling structure of a shredder motor according to claim 8, wherein a buffer sealing member is provided between the accommodating groove and the surface of the housing of the motor, and/or the contact surface of the protruding rib plate on the shredder upper cover and the protruding rib plate on the shredder lower cover are in concave-convex fit.
10. The air-cooling structure of a shredder motor according to claim 2, wherein the body of the raised rib plate is made of fireproof material, or the inner surface of the raised rib plate is provided with a fireproof layer.
11. The shredder motor air cooling structure according to claim 1, wherein the ventilation mechanism further comprises one or more ventilation holes provided in a wall of the air chamber.
12. The shredder motor air cooling structure according to claim 1, wherein the number of the fans is one, the one fan is arranged on the shredder upper cover and/or the shredder lower cover, and the fan is arranged to suck air or exhaust air, or is adjusted to suck air or exhaust air according to the change of the temperature rise of the motor.
13. The shredder motor air cooling structure according to claim 1, wherein the number of the fans is two, the two fans are arranged on the shredder upper cover and/or the shredder lower cover, the two fans are arranged up and down, the fan at the lower part is used for air inlet, and the fan at the upper part is used for air outlet.
14. A shredder provided with a motor air cooling structure according to any one of claims 1 to 13.
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| CN202010629955.9A CN113877686B (en) | 2020-07-03 | 2020-07-03 | Air cooling structure of motor of paper shredder and paper shredder |
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| CN202010629955.9A CN113877686B (en) | 2020-07-03 | 2020-07-03 | Air cooling structure of motor of paper shredder and paper shredder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216605483U (en) * | 2022-01-11 | 2022-05-27 | 东莞市凌亚电子有限公司 | Air draft heat radiation structure applied to paper shredder |
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| CN113877686A (en) | 2022-01-04 |
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