Drive device for a blender

Abstract

A driving device of a blender according to the present application includes a blender main body including a blade driving motor for rotating a pulverizing blade, and a cover unit installed at the blender main body and covering the blade driving motor in multiple to prevent operation noise of the blade driving motor from being transmitted to the outside.

Description

Technical Field

[0001] This invention relates to a drive device for a mixer, and more particularly to a drive device for a mixer used to drive a mixer. Background Technology

[0002] Typically, a mixer is an electric device consisting of a container (cup) for holding the object to be mixed and a main body containing a motor.

[0003] The container is made of hard heat-resistant glass, synthetic resin or stainless steel, and a stainless steel crushing blade is installed in the lower part of the container in conjunction with the drive unit.

[0004] With the high-speed rotation of the shredder blades, it is not only used to cut and shred objects to be shredded, including fruits or vegetables, but it is also widely used in households for juicing objects to be shredded.

[0005] However, the high-speed rotating blades of the mixer generate a lot of noise during operation, which can be very inconvenient for users and also pollute the surrounding environment. Summary of the Invention

[0006] Technical issues

[0007] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a drive device for a mixer to reduce the operating noise of the mixer.

[0008] Problem Solution

[0009] To achieve the objectives described above, the drive unit of the mixer according to the present invention comprises: a mixer body including a blade drive motor for rotating crushing blades; and a cover unit mounted on the mixer body and multiple times covering the blade drive motor to prevent the operating noise of the blade drive motor from being transmitted to the outside.

[0010] The cover unit includes: an inner cover for covering the blade drive motor; and at least one outer cover covering the inner cover outside the inner cover. A cooling fan disposed above the blade drive motor blows air to the blade drive motor side during operation. The exhaust channel, serving as a path for discharging air from the inside of the inner cover toward the outside of the mixer, can be formed in a straight rather than curved shape.

[0011] Specifically, the blade drive motor, inner cover, and outer cover are installed on the upper part of the bottom plate inside the main body housing of the mixer body. The bottom exhaust hole is formed on the part of the bottom plate below the blade drive motor, and the housing exhaust hole is formed on the part of the main body housing below the bottom exhaust hole. The exhaust channel serves as the path for air to flow from the cooling fan inside the inner cover through the bottom exhaust hole and the housing exhaust hole in sequence, and can be formed in the longitudinal downward direction.

[0012] Additionally, a housing supply hole is formed at the lower side of the main housing, a bottom supply hole is formed on the lower side of the bottom plate between the outer cover and the inner cover, a cover supply hole is formed on the upper part of the inner cover, and an air supply channel is formed by passing through the housing supply hole, the bottom supply hole, and the cover supply hole in sequence.

[0013] On the other hand, an air guide is formed by the portion of the edge of the cover supply hole located in the rotation direction of the cooling fan protruding upward and extending in the opposite direction to the rotation direction of the cooling fan, so that air supplied to the inside of the inner cover through the cover supply hole flows into the inside of the inner cover in the rotation direction of the cooling fan. Attached Figure Description

[0014] Figure 1 The figure shows a mixer equipped with a drive device according to the invention.

[0015] Figure 2 and Figure 3 It is shown in Figure 1 A diagram showing the internal structure of the mixer after the cover unit has been removed.

[0016] Figure 4 This illustrates a cover unit covered by a drive device according to the invention. Figure 2 A diagram of a blade-driven motor.

[0017] Figure 5 It is shown Figure 4 An exploded perspective view of the cover unit separated from the base plate.

[0018] Figure 6 It is shown Figure 4 A longitudinal sectional view of the interior of the main body shell. Detailed Implementation

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings to facilitate implementation by those skilled in the art. However, in describing the preferred embodiments of the present invention in detail, detailed descriptions of related known functions or structures will be omitted if they are deemed to obscure the main points of the invention. Furthermore, in all the drawings, the same reference numerals are used for parts having similar functions and effects. Additionally, in this specification, terms such as "upper," "upper part," "upper surface," "lower," "lower part," "lower surface," and "side" are based on the drawings and may actually vary depending on the orientation of the elements or components.

[0020] Furthermore, throughout this specification, when a component is described as being 'connected' to other components, this includes not only 'direct connection' but also 'indirect connection' via other intervening elements. Additionally, unless explicitly stated otherwise, the term 'comprises' should be understood to include, rather than exclude, other constituent elements.

[0021] Figure 1 The figure shows a mixer equipped with a drive device according to the invention. Figure 2 and Figure 3 It is shown in Figure 1 A diagram showing the internal structure of the mixer after the cover unit has been removed.

[0022] Referring to the attached drawings, the mixer includes a mixer body 100 and a cover unit 200.

[0023] The mixer body 100 may include a crushing blade 110 and a blade drive unit 120 for driving the crushing blade 110 to rotate.

[0024] Specifically, the shredding blade 110 is disposed inside the rotating drum 130, and performs a shredding function on the object to be stirred inside the rotating drum 130 when it rotates. Here, the object to be stirred refers to food that can be shredded by the operation of the mixer.

[0025] Meanwhile, the blade drive unit 120, as a structure that provides driving force for the rotating crushing blade 110, may have a blade rotation shaft 122 and a blade drive motor 121.

[0026] At this time, the blade rotation shaft 122 has a structure that connects to the lower part of the crushing blade 110.

[0027] This blade rotation shaft 122 connects the crushing blade 110 to the blade drive motor 121, and by transmitting the rotational driving force of the blade drive motor 121 to the crushing blade 110, the crushing blade 110 can be rotated and driven when the blade drive motor 121 is running.

[0028] At this time, the blade rotation shaft 122 and the blade drive motor 121 can be connected by a blade drive connection line 123, such as a timing belt.

[0029] In addition, the mixer body 100 may include a rotating drum 130 and a drum drive unit 140.

[0030] The rotating cylinder 130 is equipped with a crushing blade 110 inside. The upper part of the rotating cylinder 130 is an open structure at the top and is configured to be opened or closed by an outer cylinder cover 150.

[0031] In addition, a protrusion 131 is formed on the inner side of the rotating cylinder 130 to obstruct the agitated object that is crushed and rotated by the crushing blade 110.

[0032] Meanwhile, the cylinder drive unit 140, as a structure that provides driving force to rotate the rotating cylinder 130, may have a cylinder drive motor 141 and a cylinder rotation shaft 142.

[0033] The cylinder rotation shaft 142 has a structure that connects to the lower part of the rotating cylinder 130.

[0034] This cylinder rotation shaft 142 connects the rotating cylinder 130 and the cylinder drive motor 141, so that the rotational driving force of the cylinder drive motor 141 is transmitted to the rotating cylinder 130, thereby driving the rotating cylinder 130 to rotate when the cylinder drive motor 141 is running.

[0035] At this time, the cylinder drive motor 141 and the cylinder rotation shaft 142 can be connected by a cylinder drive connection line 143, such as a timing belt.

[0036] On the other hand, the blade drive unit 120 and the cylinder drive unit 140 described above can be controlled by a controller (not shown). Specifically, the blade drive motor 121 of the blade drive unit 120 and the cylinder drive motor 141 of the cylinder drive unit 140 can be electrically connected to the controller, so that the blade drive motor 121 and the cylinder drive motor 141 can be controlled by the controller.

[0037] Traditional mixers, because the pulverizing blades 110 rotate only in one direction, cause the object to be mixed to rotate continuously in only one direction inside the mixing drum. As a result, the object is kept in a wall-like state, pushed towards the inner side of the mixer housing, and cannot return to the pulverizing blades 110, thus significantly reducing the pulverizing performance.

[0038] Of course, existing mixers also form protrusions on the inner wall of the mixing drum to generate a certain degree of vortex in the object being mixed. However, this is also a flow with a regular pattern, so it still has the limitation of not being able to fully crush the object being mixed.

[0039] Therefore, in order to achieve irregular flow of the object to be mixed, that is, to break the equilibrium state of the object to be mixed inside the rotating drum 130, the mixer according to the present invention can control the drum drive unit 140 by the controller so that the drum 130 can be repeatedly rotated in the opposite direction to the crushing blade 110 and then stopped, or in the mode of changing the speed after reversing.

[0040] As described above, the mixer according to the present invention is controlled by a controller to drive the cylinder 140, thereby disrupting the balance of the object to be mixed, so that the object to be mixed does not accumulate on the inner side of the rotating cylinder 130 like a wall, but can return to the crushing blade 110 rotating in the center of the rotating cylinder 130, thereby significantly improving the crushing performance.

[0041] That is, the mixer according to the present invention is configured to disrupt the equilibrium state of the object to be mixed, and by disrupting the object to be mixed, which is maintained in a wall-like shape on the inner side of the rotating drum 130, the crushing performance of the object to be mixed can be improved.

[0042] Specifically, during the stirring process, the object being stirred will move toward the inner side of the rotating cylinder 130 due to the centrifugal force caused by the rotation of the crushing blade 110. At this time, if the particles of the object being stirred form a force balance, they will stop moving and will not move further. Consequently, they cannot move toward the crushing blade 110 and will not be further crushed.

[0043] However, the balance of forces between the particles of the object to be stirred can be disrupted by repeating the pattern of the rotating drum 130 stopping after reversal or changing the rotation speed after reversal in the mixer according to the invention, causing the particles to flow again, and in this flow, the object to be stirred moves toward the crushing blade 110 side and continues to be crushed.

[0044] Figure 4 This illustrates a cover unit covered by a drive device according to the invention. Figure 2 A diagram of a blade-driven motor. Figure 5 It is shown Figure 4 An exploded perspective view of the cover unit separated from the base plate. Figure 6 It is shown Figure 4 A longitudinal sectional view of the interior of the main body shell.

[0045] Referring to the accompanying drawings, the cover unit 200 of the present invention is mounted on the mixer body 100 for multiple coverings of the blade drive motor 121.

[0046] This cover unit 200 has the effect of preventing the operating noise of the blade drive motor 121 from being transmitted outward.

[0047] Specifically, the cover unit 200 includes an inner cover 210 and an outer cover 220.

[0048] The inner cover 210 covers the blade drive motor 121.

[0049] Furthermore, the outer cover 220 covers the inner cover 210 on the outside of the inner cover 210. In the accompanying drawings, one outer cover 220 is used to cover the inner cover 210. However, the invention is not limited to this. At least one outer cover 220 can be provided to cover the inner cover 210 multiple times.

[0050] As described above, the present invention includes an inner cover 210 and at least one outer cover 220. By using a cover structure with at least two layers to cover the blade drive motor 121, it is possible to prevent the motor noise generated from the blade drive motor 121 from being transmitted outward, thereby significantly reducing the operating noise of the mixer.

[0051] Furthermore, since the present invention has such a cover unit 200, the heat generated during the operation of the blade drive motor 121 can be minimized even when the blade drive motor 121 is covered.

[0052] That is, the present invention has a cooling fan 121a disposed on the upper part of the blade drive motor 121. The blade drive motor 121 is cooled by the operation of the cooling fan 121a. In order to improve the cooling efficiency of the cooling fan 121a, an exhaust channel can be formed to smoothly discharge the air escaping from the inner cover 210.

[0053] Specifically, in this invention, the cooling fan 121a located above the blade drive motor 121 is configured to blow air toward the blade drive motor 121. Meanwhile, the exhaust channel, as a path for discharging air from the inside of the inner cover 210 toward the outside of the mixer, can be formed in a straight shape rather than a curved shape.

[0054] As described above, by forming the exhaust passage into a straight rather than curved shape, it is possible to prevent the air escaping from the inside of the inner cover 210 from being obstructed during the exhaust process due to the change in direction.

[0055] In other words, in this invention, by forming the exhaust channel into a straight rather than curved shape, the air escaping from the inside of the inner cover 210 can be quickly discharged from the inner cover 210 to the outside without changing direction.

[0056] More specifically, the present invention can employ the following structure to give the exhaust passage a straight rather than curved shape.

[0057] The blade drive motor 121, inner cover 210 and outer cover 220 are installed on the upper part of the bottom plate 190 inside the main body shell 180 of the mixer body 100.

[0058] The inner cover 210 and the outer cover 220 have an open bottom structure so that they can cover the blade drive motor 121 while descending from the upper side to the side of the blade drive motor 121.

[0059] At this time, the base discharge hole 190b is formed on the part of the base plate 190 below the blade drive motor 121, and the housing discharge hole 180b is formed on the part of the main housing 180 below the base discharge hole 190b.

[0060] Thus, the exhaust channel can be formed as a path for air to flow sequentially from the inside of the inner cover 210 through the base exhaust hole 190b and the housing exhaust hole 180b.

[0061] That is, the air blown out from the cooling fan 121a cools the blade drive motor 121 as it flows downward, and then flows through the bottom discharge port 190b and the housing discharge port 180b in sequence and is discharged to the outside of the mixer.

[0062] Thus, the cooling fan 121a, the blade drive motor 121, the base exhaust hole 190b, and the housing exhaust hole 180b are arranged sequentially downwards, thereby forming a structure that faces the longitudinal lower side of the exhaust channel.

[0063] As described above, in this invention, the exhaust passage is configured as a straight rather than curved shape. Specifically, by adopting a structure formed towards the lower longitudinal side, the air discharged from inside the inner cover 210 is quickly discharged to the outside of the inner cover 210 without changing direction, thereby smoothly discharging the air and improving the cooling efficiency of the blade drive motor 121.

[0064] Furthermore, when air is blown down to the blade drive motor 121 from the cooling fan 121a, the inner side of the inner cover 210 covering the blade drive motor 121 can prevent air diffusion. Since the blade drive motor 121 can be centrally cooled, the cooling efficiency of the blade drive motor 121 can be further improved.

[0065] On the other hand, in this invention, the air supply channel, as a path for supplying air from the outside of the mixer to the inside of the inner cover 210, can be a structure that passes through the space between the outer cover 220 and the inner cover 210 and is connected to the inside of the inner cover 210 through the upper part of the inner cover 210.

[0066] Specifically, in this invention, a housing supply hole 180a is formed on the lower side of the main housing 180, a bottom supply hole 190a is formed on a portion of the lower bottom plate 190 between the outer cover 220 and the inner cover 210, and a cover supply hole 210a is formed on the upper part of the inner cover 210.

[0067] Thus, the air supply channel can be formed by passing sequentially from the housing supply hole 180a through the bottom supply hole 190a and the cover supply hole 210a.

[0068] That is, air flowing in from outside the mixer through the housing supply hole 180a can flow between the outer cover 220 and the inner cover 210 through the bottom supply hole 190a, and after moving to the upper side of the inner cover 210, it is supplied to the inner cover 210 through the cover supply hole 210a.

[0069] As described above, the air supply channel can be formed into a curved rather than straight shape by adopting a structure that rises along the space between the outer cover 220 and the inner cover 210 and then descends through the cover supply hole 210a formed on the upper part of the inner cover 210. This allows the direction of air to be changed and supplied to the inner cover 210. Nevertheless, as will be described later, it is still possible to supply air quickly to the interior of the inner cover 210.

[0070] Because when comparing the airflow of the air supply channel and the air exhaust channel, the structure of the exhaust channel has a relatively greater impact on the airflow.

[0071] Specifically, if the exhaust is smooth, a large negative pressure will be formed in the internal space of the inner cover 210, thereby allowing for a smooth supply of air.

[0072] Conversely, if the exhaust is not smooth, air cannot be supplied smoothly because a sufficiently large negative pressure will not be formed in the internal space of the inner cover 210.

[0073] For example, in this invention, when the air supply channel and the exhaust channel are interchanged, that is, when the arrows indicating the flow direction shown in the attached figure point in opposite directions, air cannot be supplied smoothly.

[0074] That is, even if the air supply channel is formed as a straight line, when the exhaust channel is formed as a curved, non-straight line, air cannot be supplied smoothly through the air supply channel.

[0075] Specifically, when air is discharged through a curved, non-linear exhaust channel, the air collides with the inner wall of the deflection section of the exhaust channel, thus significantly reducing the exhaust velocity. Furthermore, due to the vortex generated in the deflection section, the air cannot be discharged smoothly.

[0076] On the other hand, in this invention, the air guide portion 211 may be formed in the inner cover 210.

[0077] The air guide 211 has the function of causing the air supplied to the inside of the inner cover 210 through the cover supply hole 210a to flow into the inside of the inner cover 210 in the rotation direction of the cooling fan 121a.

[0078] Specifically, an air guide portion 211 is formed by the portion of the edge of the cover supply hole 210a located in the rotation direction of the cooling fan 121a protruding upward and extending in the opposite direction to the rotation direction of the cooling fan 121a.

[0079] Thus, the cover supply hole 210a has a structure in which the inlet for air inflow is arranged laterally on the upper surface of the inner cover 210. Thanks to the shape of the air guide 211 as described above, the structure changes to an upright position after gradually entering the inner side from the inlet. At the same time, since the inlet has a structure facing the opposite direction to the rotation direction of the cooling fan 121a, the air supplied to the inner side of the inner cover 210 through the cover supply hole 210a will flow into the inner side of the inner cover 210 along the rotation direction of the cooling fan 121a.

[0080] As described above, the air guide 211 allows air supplied to the inside of the inner cover 210 through the cover supply hole 210a to flow into the inside of the inner cover 210 along the rotation direction of the cooling fan 121a. As a result, air is supplied to the inside of the inner cover 210 more smoothly, thereby further improving the cooling efficiency of the blade drive motor 121.

[0081] In summary, the drive unit of the mixer according to the present invention has a cover unit 200 that covers the blade drive motor 121 to prevent the operating noise of the blade drive motor 121 from being transmitted to the outside. By preventing the noise of the motor generated by the blade drive motor 121 from being transmitted to the outside of the mixer, the noise level of the mixer operation can be significantly reduced.

[0082] Furthermore, in this invention, the exhaust passage is configured as a straight rather than curved shape. Specifically, by adopting a structure formed towards the lower longitudinal side, the air discharged from inside the inner cover 210 is quickly discharged to the outside of the inner cover 210 without changing direction, thereby smoothly discharging the air and improving the cooling efficiency of the blade drive motor 121.

[0083] Meanwhile, in this invention, when air is blown down to the blade drive motor 121 from the cooling fan 121a, the inner side of the inner cover 210 covering the blade drive motor 121 can prevent air diffusion. Since the blade drive motor 121 is cooled in a concentrated manner, the cooling efficiency of the blade drive motor 121 can be further improved.

[0084] Furthermore, in this invention, an air guide 211 is formed on the upper part of the inner cover 210. Therefore, air supplied to the inside of the inner cover 210 through the cover supply hole 210a can flow into the inside of the inner cover 210 along the rotation direction of the cooling fan 121a through the cover supply hole 210a. As a result, air is supplied to the inside of the inner cover 210 more smoothly, thereby further improving the cooling efficiency of the blade drive motor 121.

[0085] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, those skilled in the art should understand that the present invention can be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above are exemplary in all respects and not restrictive.

Claims

1.A driving device of a blender, comprising: a blender main body including a blade driving motor for rotating a pulverizing blade; and a cover unit installed at the blender main body and covering the blade driving motor in multiple stages to prevent operation noise of the blade driving motor from being transmitted to the outside, the cover unit including: an inner cover for covering the blade driving motor; and at least one outer cover covering the inner cover outside the inner cover, a cooling fan provided at an upper portion of the blade driving motor blowing air to the blade driving motor side when operated, an exhaust passage as a path for discharging air from the inside of the inner cover toward the outside of the blender being formed in a straight line shape rather than a curved shape, the blade driving motor, the inner cover, and the outer cover being installed at an upper portion of a bottom plate inside a main body case of the blender main body, a bottom discharge hole being formed at a portion of the bottom plate at a lower side of the blade driving motor, a case discharge hole being formed at a portion of the main body case at a lower side of the bottom discharge hole, the exhaust passage being formed toward a longitudinal lower side as a path for air to flow from the cooling fan inside the inner cover in sequence through the bottom discharge hole and the case discharge hole. 2.The driving device of a blender according to claim 1, wherein a case supply hole is formed at a lower end of a side portion of the main body case, a bottom supply hole is formed at a portion of the bottom plate at a lower side between the outer cover and the inner cover, and a cover supply hole is formed at an upper portion of the inner cover, an air supply passage is formed by passing in sequence through the case supply hole, the bottom supply hole, and the cover supply hole. 3.The driving device of a blender according to claim 2, wherein a portion of an edge of the cover supply hole in a direction of rotation of the cooling fan is protruded along an upper side and extended in a direction opposite to the direction of rotation of the cooling fan to form an air guide portion, so that air supplied to the inside of the inner cover through the cover supply hole flows into the inside of the inner cover in the direction of rotation of the cooling fan. ​ ​

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