A spiral exhaust air duct of a stirrer mainframe

Abstract

The present invention relates to a spiral exhaust duct for a main machine of a stirrer, comprising a motor base and a bottom cover, both of which are covered and provided with an exhaust duct, the exhaust duct comprising a central air inlet end, a first exhaust end and a second exhaust end, the central air inlet end coincides with the center of the motor base and is interconnected, the first exhaust end and the second exhaust end are respectively located on opposite sides of the central air inlet end, the exhaust duct is provided with a first spiral channel for connecting the central air inlet end with the first exhaust end, and a second spiral channel for connecting the central air inlet end with the second exhaust end. The present invention sets a double spiral channel on the exhaust duct, which can increase the air output by multiples, is suitable for motors with higher speeds and centrifugal impellers with larger air output, and the double spiral channel design can offset vibration and wind noise when the air is discharged, effectively reducing the vibration and noise generated by the whole machine when the motor rotates at high speed.

Description

Technical Field

[0001] The invention relates to the field of household blenders, in particular to a spiral exhaust duct of a blender host. Background Art

[0002] Chinese patent document No. CN205795560U discloses a high-speed wall-breaking food processor with good heat dissipation effect, which belongs to the field of food processing devices and solves the problem of poor heat dissipation of motors rotating at high speeds. The technical solution to this problem mainly includes a machine base and a cup body installed on the machine base, a motor is provided in the machine base, a crushing knife is provided in the cup body, the motor drives the crushing knife to work, a fan is provided at the rear end of the motor, an exhaust channel for heat dissipation of the power motor is provided in the machine base, an air inlet of the exhaust channel corresponds to the fan, an air outlet of the exhaust channel is provided at the bottom of the machine base, the exhaust channel includes an air cavity located between the air inlet and the air outlet, the air cavity has an upper cavity wall and a lower cavity wall, the upper cavity wall extends from the air inlet to the air outlet, the upper cavity wall includes a guide surface for changing the air outlet direction, the guide surface is located above the air outlet, and the air outlet is provided on the lower cavity wall.

[0003] The above-mentioned exhaust channel for motor heat dissipation is a spiral centrifugal air duct, but its air output is small and cannot be applied to motors with higher speeds and centrifugal wind wheels with larger air volume. In addition, the vibration and noise generated by the whole machine are large when the motor rotates at high speed. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a spiral exhaust duct for a blender main unit, which can significantly increase the air volume, improve the heat dissipation effect, and reduce the vibration and noise of the whole machine.

[0005] The object of the present invention is achieved in that:

[0006] A spiral exhaust duct of a blender main unit comprises a motor base and a bottom cover, the two covers are combined to form an exhaust duct, the exhaust duct comprises a central air inlet end, a first air exhaust end and a second air exhaust end, the central air inlet end coincides with the center of the motor base and is interconnected, the first air exhaust end and the second air exhaust end are respectively located on opposite sides of the central air inlet end, a first spiral channel connecting the central air inlet end with the first air exhaust end, and a second spiral channel connecting the central air inlet end with the second air exhaust end are provided in the exhaust duct.

[0007] The first spiral channel and the second spiral channel start from opposite sides of the central air inlet end and end at the first air outlet end and the second air outlet end, respectively. The two spiral channels spiral outward from their starting points to their end points.

[0008] The first spiral channel and the second spiral channel are partially adjacently arranged along their spiral directions.

[0009] The radial dimensions of the first spiral channel and the second spiral channel gradually increase along their spiral directions.

[0010] The radial dimensions of the first spiral channel and the second spiral channel located on opposite sides of the central air inlet end and arranged opposite to each other are H1 and H2 respectively, and H1 is not equal to H2.

[0011] The exhaust air duct is integrally formed on the lower bottom surface of the motor base or the inner bottom surface of the bottom cover.

[0012] An air duct plate is arranged between the motor seat and the bottom cover, and the exhaust air duct is integrally formed on the air duct plate.

[0013] A sealing gasket is provided between the lower bottom surface of the motor seat and the air duct plate.

[0014] A motor is arranged in the motor seat, the motor shaft of which extends to the central air inlet end and is provided with a wind wheel, and heat dissipation air outlet grilles connected with the first air outlet end and the second air outlet end are arranged on opposite sides of the bottom cover.

[0015] The heat dissipation air outlet grille is inclined or curved from top to bottom toward the inside of the bottom cover.

[0016] By providing more exhaust ports and spiral channels, the exhaust channels form more layers of spiral exhaust channels to further increase the air output.

[0017] The beneficial effects of the present invention are as follows:

[0018] Setting a double helix channel on the exhaust duct can increase the air output exponentially. It is suitable for motors with higher speeds and centrifugal impellers with larger air volume. The double helix channel design can offset vibration and wind noise when air is discharged, effectively reducing the vibration and noise generated by the entire machine when the motor rotates at high speed.

[0019] The invention is applicable to various household blenders, such as juicers, wall breakers and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Decomposition of an embodiment of the present invention Figure 1 .

[0021] Figure 2 Decomposition of an embodiment of the present invention Figure 2 .

[0022] Figure 3 This is an assembly diagram (cross-sectional view) of an embodiment of the present invention.

[0023] Figure 4 It is a bottom view (cross-section) of an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-Figure 4 The spiral exhaust duct of the main unit of the blender includes a motor base 1 and a bottom cover 2, and the two covers are combined to form an exhaust duct, the exhaust duct includes a central air inlet end 31, a first air exhaust end 32 and a second air exhaust end 33, the central air inlet end 31 coincides with the center of the motor base 1 and is connected to each other, the first air exhaust end 32 and the second air exhaust end 33 are respectively located on opposite sides of the central air inlet end 31, and a first spiral channel 34 is provided in the exhaust duct to connect the central air inlet end 31 with the first air exhaust end 32, and a second spiral channel 35 is provided to connect the central air inlet end 31 with the second air exhaust end 33.

[0026] In this embodiment, a double helix channel is arranged on the exhaust channel, so that the exhaust channel forms a double-layer spiral exhaust duct, which can increase the air outlet volume of the exhaust duct exponentially. When the main unit of the agitator adopts a higher speed motor or a centrifugal impeller with a larger air volume in order to improve the stirring effect or the heat dissipation effect, the air outlet volume of the exhaust duct can still be greater than the airflow of the heat dissipation airflow, that is, it can completely discharge the heat dissipation airflow generated when the main unit is working, and the heat dissipation airflow will not generate turbulence inside the main unit, effectively reducing the noise of the whole machine. Moreover, the double helix channel design can offset vibration and wind noise when the air is discharged, effectively reducing the vibration and noise generated by the whole machine when the motor rotates at high speed.

[0027] Furthermore, the first spiral channel 34 and the second spiral channel 35 start from opposite sides of the central air inlet end 31 and end at the first air exhaust end 32 and the second air exhaust end 33 respectively, and the two spiral channels spiral outward from their starting points to their end points so that the two spiral channels do not interfere with each other.

[0028] Furthermore, the first spiral channel 34 and the second spiral channel 35 are partially adjacently arranged along their spiral directions, which can effectively reduce the overall occupied volume of the exhaust air duct and make the overall structure more compact.

[0029] Furthermore, the radial dimensions of the first spiral channel 34 and the second spiral channel 35 gradually increase along their spiral directions, thereby preventing the heat dissipation airflow from being pressurized, backflowing, or having turbulence during the discharge process.

[0030] Furthermore, the radial dimensions of the first spiral channel 34 and the second spiral channel 35 located on opposite sides of the central air inlet end 31 and arranged opposite to each other are H1 and H2 respectively, and H1 is not equal to H2. Figure 4 As shown, this technical solution makes the overall radial dimensions of the two spiral channels different, which has a better effect of offsetting vibration and eliminating wind noise.

[0031] Furthermore, the exhaust duct is integrally formed on the lower bottom surface of the motor base 1 or the inner bottom surface of the bottom cover 2, or, an air duct plate 3 is provided between the motor base 1 and the bottom cover 2, and the exhaust duct is integrally formed on the air duct plate 3. This embodiment adopts a technical solution of separately providing the air duct plate 3, which facilitates the processing and forming of each component and reduces the difficulty of mold development. In addition, a sealing gasket 6 is provided between the lower bottom surface of the motor base 1 and the air duct plate 3 to avoid air leakage and generate additional noise.

[0032] Furthermore, a motor 4 is arranged in the motor seat 1, and its motor shaft 41 extends to the central air inlet end 31 and is provided with a wind wheel 5. The heat dissipation air outlet grilles 21 connected to the first air exhaust end 32 and the second air exhaust end 33 are provided on the opposite sides of the bottom cover 2. The heat dissipation air outlet grilles 21 are inclined or bent from top to bottom toward the inside of the bottom cover 2, thereby achieving a better air guiding effect.

[0033] The present invention can also form more layers of spiral exhaust channels inside the exhaust channel by arranging more exhaust ports and spiral channels, so as to further increase the air output.

[0034] The above disclosure is only the preferred embodiment of the present invention, and is not intended to limit the protection scope of the claims of the present invention. Equivalent changes made within the protection scope of the present invention still fall within the protection scope of the present invention.

Claims

1. A spiral exhaust duct of a main unit of a stirrer, comprising a motor base (1) and a bottom cover (2), both of which are covered and provided with an exhaust duct, characterized in that: The exhaust air duct comprises a central air inlet end (31), a first air outlet end (32) and a second air outlet end (33); the central air inlet end (31) coincides with the center of the motor base (1) and is in communication with each other; the first air outlet end (32) and the second air outlet end (33) are respectively located on opposite sides of the central air inlet end (31); a first spiral channel (34) is provided in the exhaust air duct for communicating the central air inlet end (31) with the first air outlet end (32); and a second spiral channel (35) is provided for communicating the central air inlet end (31) with the second air outlet end (33); The first spiral channel (34) and the second spiral channel (35) respectively start at opposite sides of the central air inlet end (31) and end at the first air outlet end (32) and the second air outlet end (33), and the two spiral channels spiral outward from their starting points to their end points; The first spiral channel (34) and the second spiral channel (35) are locally arranged adjacent to each other along their spiral directions; The first spiral channel (34) and the second spiral channel (35) located on opposite sides of the central air inlet end (31) and arranged in opposite directions have radial channel dimensions of H1 and H2 respectively, and H1 is not equal to H2.

2. The spiral exhaust duct of the agitator main unit according to claim 1, characterized in that: The radial dimensions of the first spiral channel (34) and the second spiral channel (35) gradually increase along their spiral directions.

3. The spiral exhaust duct of the agitator main unit according to claim 1, characterized in that: The exhaust air duct is integrally formed on the lower bottom surface of the motor base (1) or the inner bottom surface of the bottom cover (2).

4. The spiral exhaust duct of the agitator main unit according to claim 1 is characterized in that: An air duct plate (3) is provided between the motor base (1) and the bottom cover (2), and an exhaust air duct is integrally formed on the air duct plate (3).

5. The spiral exhaust duct of the agitator main unit according to claim 4, characterized in that: A sealing gasket (6) is provided between the lower bottom surface of the motor seat (1) and the air duct plate (3).

6. The spiral exhaust duct of the agitator main unit according to any one of claims 1 to 5, characterized in that: A motor (4) is arranged in the motor seat (1), wherein the motor shaft (41) extends to the central air inlet end (31) and is provided with a wind wheel (5), and heat dissipation air outlet grilles (21) connected to the first air outlet end (32) and the second air outlet end (33) are provided on opposite sides of the bottom cover (2).

7. The spiral exhaust duct of the agitator main unit according to claim 6, characterized in that: The heat dissipation air outlet grille (21) is inclined or curved from top to bottom toward the inside of the bottom cover (2).

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