Improved heat dissipation structure of stirrer

Abstract

The utility model discloses an improved heat dissipation structure of a stirrer. The stirring cup assembly comprises a cup body, a motor and a cup base, a circuit board is arranged in the main machine, an embedding groove for containing the stirring cup assembly is formed in the top of the main machine, an air inlet channel and an air outlet channel which are separated from each other are formed in the main machine, a heat dissipation channel is formed in the cup base, the heat dissipation channel dissipates heat for the motor, and the circuit board is arranged in the air inlet channel. Air enters from the bottom of the side face of the host through the air inlet channel, an outlet of the air inlet channel communicates with an inlet of the heat dissipation channel in the embedded groove, an outlet of the heat dissipation channel communicates with an inlet of the air outlet channel, and the air outlet channel exhausts air from the bottom of the rear side of the host. The air channel is reasonable in design, the air inlet channel, the heat dissipation channel and the air outlet channel are matched to achieve heat dissipation of the motor and the circuit board, and the overall temperature of the stirrer is greatly reduced. The design of the air inlet channel and the air outlet channel prevents heat from circulating in the stirrer and reduces the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to a mixer. Background Technology

[0002] Existing food processing machines, such as blenders, consist of a main unit and a mixing cup assembly. The mixing cup assembly contains mixing blades, and the main unit houses a motor. The mixing cup assembly sits on top of the main unit. The mixing cup assembly includes a cup body and a heating plate, which is not conducive to heat dissipation. Because the bottom of the mixing cup assembly is located inside the main unit, the heating plate increases the heat of the main unit, affecting the normal operation of the internal components. Utility Model Content

[0003] The purpose of this invention is to provide an improved heat dissipation structure for a mixer with better heat dissipation performance.

[0004] The purpose of this utility model is achieved as follows.

[0005] An improved heat dissipation structure for a mixer includes a main unit and a mixing cup assembly. The mixing cup assembly includes a cup body, a motor, and a cup base. The main unit contains a circuit board, and the top of the main unit has an embedded groove for accommodating the mixing cup assembly. The main unit has a mutually separated air inlet channel and air outlet channel. The cup base has a heat dissipation channel for motor cooling. The circuit board is placed in the air inlet channel, which receives air from the bottom side of the main unit. The air inlet channel outlet is connected to the heat dissipation channel inlet in the embedded groove, and the heat dissipation channel outlet is connected to the air outlet channel inlet. The air outlet channel exhausts air from the bottom rear side of the main unit.

[0006] The air duct design of this invention is reasonable. The air inlet channel, heat dissipation channel, and air outlet channel work together to dissipate heat from the motor and circuit board, greatly reducing the overall temperature of the mixer. The design of the air inlet and outlet channels prevents heat from circulating in the mixer, thus avoiding reduced heat dissipation efficiency.

[0007] Furthermore, the main unit includes a bottom shell, the bottom shell has an air inlet with an air inlet channel, and the inner side of the bottom shell is provided with a blocking "door" frame corresponding to the air inlet. The blocking "door" frame coincides with the air inlet in the vertical projection direction, and a T-shaped flow channel is formed between the blocking "door" frame and the air inlet. The air inlet and the air inlet channel are connected through the T-shaped flow channel.

[0008] The barrier frame design provides a degree of waterproofing to the air intake vent of the air inlet channel, and also prevents larger foreign objects from directly entering the main unit, thereby ensuring the safety of the circuit board.

[0009] Furthermore, the main unit includes a bottom shell, a middle shell, and a top shell. The bottom shell is fixed to the bottom surface of the middle shell, and the top shell is placed on top of the middle shell. The top of the top shell is recessed into the middle shell to form the embedded groove. A first air duct cover is provided on the bottom surface of the top shell. A circuit board is provided on the bottom surface of the first air duct cover. A circuit board box is provided below the circuit board in the first air duct cover. The air inlet channel passes between the circuit board box and the first air duct cover.

[0010] The air intake channel carries away heat from the circuit board, improving its heat dissipation efficiency.

[0011] Furthermore, a first air guide duct is provided on the side of the first air duct cover, and a second air guide duct is provided on the side of the circuit board box. The bottom side of the second air guide duct is connected to the inside of the circuit board box, the top of the second air guide duct and the bottom of the first air guide duct are vertically aligned and connected, and the top of the first air guide duct and the outlet of the air inlet channel are aligned and connected.

[0012] The first and second air ducts guide airflow to prevent heat from accumulating inside the main unit.

[0013] Furthermore, an upward-opening water collection trough is provided inside the first air guide duct, directly below the outlet of the air inlet duct.

[0014] The water collection tank receives water from the air intake channel outlet of the main unit, preventing water from directly contacting the circuit board and causing damage.

[0015] Furthermore, a lower enclosure extends downward from the bottom of the air inlet channel outlet, and the lower enclosure is inserted into the water collection tank. A gap is left between the lower enclosure and the water collection tank for airflow to pass through. The top of the first air guide channel is connected to the air inlet channel outlet through the gap.

[0016] The water collection tank does not interfere with the airflow through the air intake channel, and foreign objects are not easily allowed to enter the second air guide duct directly through the air intake channel outlet.

[0017] Furthermore, a third air guide hood is provided at the rear of the first air duct cover, and a fourth air guide hood is provided on the top surface of the rear of the bottom shell. The bottom of the third air guide hood and the top of the fourth air guide hood are connected. The bottom surface of the embedded groove is provided with the air outlet channel inlet. The top of the third air guide hood is aligned with and connected to the air outlet channel inlet. The air outlet channel inlet is provided with several inclined air guide vanes.

[0018] The air outlet duct is set independently to prevent heat from flowing back into the main unit.

[0019] Furthermore, a positioning protrusion extends upward from the bottom surface of the embedded groove, and the air inlet channel outlet is located within the positioning protrusion. The cup base is provided with a positioning groove, and the bottom of the positioning groove is provided with the heat dissipation channel inlet. The positioning protrusion is inserted into the positioning groove, and the heat dissipation channel inlet and air inlet channel outlet are connected.

[0020] The positioning protrusions and positioning grooves facilitate the positioning and assembly of the main unit and the mixing cup assembly, and connect the air intake channel and the heat dissipation channel.

[0021] Furthermore, the positioning protrusion is hollow inside, and a first connecting hole is provided at the top of the positioning protrusion. A first transverse partition is provided inside the positioning protrusion corresponding to the first connecting hole. The first transverse partition and the first connecting hole coincide in the vertical projection direction. A first gap for airflow is left between the side of the first transverse partition and the positioning protrusion. A second transverse partition is provided inside the cup base corresponding to the heat dissipation channel inlet. The second transverse partition is suspended above the heat dissipation channel inlet by the support. The heat dissipation channel inlet and the second transverse partition coincide in the vertical projection direction. A second gap for airflow is formed between the heat dissipation channel inlet, the second transverse partition and the support.

[0022] Both the heat dissipation channel inlet and the air intake channel outlet have protective designs to reduce the risk of foreign objects entering.

[0023] Furthermore, the mixing cup assembly also includes a heating plate at the bottom of the cup body, a fixed bracket, and a fifth air guide shroud. The motor is suspended below the heating plate. The top of the fixed bracket is connected and fixed to the bottom of the cup body, and the bottom of the fixed bracket is connected and fixed to the cup base. The fifth air guide shroud is located between the fixed bracket and the cup base. The top of the fifth air guide shroud has a heat dissipation cavity for accommodating the motor. The lower part of the fifth air guide shroud has a vortex heat dissipation channel. The end of the vortex heat dissipation channel is vertically connected to the bottom surface of the cup base. The fifth air guide shroud has a third connecting port outside the vortex heat dissipation channel. The third connecting port is connected to the heat dissipation channel inlet on the bottom surface of the cup base. A cooling fan is driven and connected to the bottom of the motor. The cooling fan passes through the fifth air guide shroud and is located in the center of the vortex heat dissipation channel.

[0024] The heat dissipation channel is reasonably designed to improve the heat dissipation effect of the motor and heating plate.

[0025] This invention features a rationally designed air duct system. The air inlet, heat dissipation, and outlet channels work together to dissipate heat from the motor and circuit board, significantly reducing the overall temperature of the mixer. The air inlet and outlet channels are designed to prevent heat from circulating within the mixer, thus reducing heat dissipation efficiency. Both the inlet and outlet of the air inlet channel and the inlet of the heat dissipation channel have protective designs to reduce the risk of foreign objects entering. The air inlet outlet is waterproof to prevent water from entering the main unit through the embedded groove and damaging the circuit board. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of Example 1.

[0027] Figure 2 This is a cross-sectional structural diagram of Example 1.

[0028] Figure 3 This is a cross-sectional structural diagram of Example 1 (the middle shell is omitted).

[0029] Figure 4 for Figure 3 Enlarged schematic diagram of section A in the middle.

[0030] Figure 5 This is a schematic diagram of the cross-sectional structure of the air outlet duct in Example 1.

[0031] Figure 6 This is a schematic diagram of the exploded structure of the host in Example 1.

[0032] Figure 7 This is a schematic diagram of the bottom shell structure in Example 1.

[0033] Figure 8 This is an exploded view of the stirring cup assembly in Example 1. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] Example 1, see Figure 1-8 As shown, an improved heat dissipation structure for a mixer includes a main unit 1 and a mixing cup assembly 2.

[0036] The main unit 1 includes a bottom shell 11, a middle shell 12, and a top shell 13. The bottom shell 11 is fixed to the bottom surface of the middle shell 12, and the top shell 13 is placed on top of the middle shell 12. The top of the top shell 13 is recessed into the middle shell 12 to form an embedding groove 10 for accommodating the stirring cup assembly 2. The bottom surface of the top shell 13 is provided with a first air duct cover 3, the bottom surface of the first air duct cover 3 is provided with a circuit board 4, and the first air duct cover 3 is provided with a circuit board box 41 below the circuit board 4.

[0037] The main unit 1 has a separate air inlet channel and an air outlet channel. Specifically, the air inlet channel is located on one side of the main unit 1, and the air outlet channel is located at the rear of the main unit 1.

[0038] In this embodiment, the bottom shell 11 is provided with an air inlet 14 for the air inlet channel. A barrier "door" frame 15 is provided on the inner side of the bottom shell 11 corresponding to the air inlet 14. The barrier "door" frame 15 coincides with the air inlet 14 in the vertical projection direction, forming a T-shaped flow channel 16 between the barrier "door" frame 15 and the air inlet 14. The air inlet 14 and the air inlet channel are connected through the T-shaped flow channel 16. A first air guide 31 is provided on the side of the first air duct cover 3, and a second air guide 42 is provided on one side of the circuit board box 41. The bottom side of the second air guide 42 is connected to the inside of the circuit board box 41. The top of the second air guide 42 is vertically aligned and connected to the bottom of the first air guide 31. The top of the first air guide 31 is aligned and connected to the outlet of the air inlet channel. Preferably, an upward-opening water collection trough 32 is provided inside the first air guide 31 directly below the outlet of the air inlet channel. The bottom of the air inlet channel outlet on the bottom surface of the embedded groove 10 extends downward to form a lower enclosure 17. The lower enclosure 17 is inserted into the water collection tank 32. A gap 18 is left between the lower enclosure 17 and the water collection tank 32 for airflow to pass through. The top of the first air guide duct 31 is connected to the air inlet channel outlet through the gap 18.

[0039] External airflow enters the main unit 1 through the air inlet 14 of the air inlet channel and the T-shaped flow channel 16. After passing through the gap 18 between the circuit board box 41, the second air guide 42, and the first air guide 31, the airflow reaches the air inlet channel outlet to form the air inlet channel. During the flow of air through the air inlet channel, the airflow dissipates heat from the circuit board 4. The water collection tank 32 prevents water from entering the main unit 1 from the air inlet channel outlet, and in particular, it prevents water from contacting the circuit board 4 and causing a short circuit, which could lead to an accidental danger.

[0040] The rear of the first air duct cover 3 is provided with a third air guide cover 33, and the top surface of the rear of the bottom shell 11 is provided with a fourth air guide cover 19. The bottom of the third air guide cover 33 and the top of the fourth air guide cover 19 are connected. The bottom surface of the embedded groove 10 is provided with the air outlet channel inlet. The top of the third air guide cover 33 is aligned and connected to the air outlet channel inlet. The air outlet channel inlet is provided with a number of inclined air guide vanes 40.

[0041] Airflow enters from the air outlet duct inlet, passes through the third air guide shroud 33 and the fourth air guide shroud 19 and exits from the rear of the bottom surface of the bottom shell 11 to form the air outlet duct.

[0042] The mixing cup assembly 2 includes a cup body 21, a motor 22, a cup base 25, a heating plate 23 at the bottom of the cup body 21, a fixing bracket 24, and a fifth air guide shroud 5. The motor 22 is suspended below the heating plate 23. The top of the fixing bracket 24 is connected and fixed to the bottom of the cup body 21, and the bottom of the fixing bracket 24 is connected and fixed to the cup base 25. The fifth air guide shroud 5 is located between the fixing bracket 24 and the cup base 25. The top of the fifth air guide shroud 5 has a heat dissipation cavity 51 for housing the motor 22, and the lower part of the fifth air guide shroud 5 has a vortex heat dissipation channel 52. The end of the vortex heat dissipation channel 52 vertically connects to the bottom surface of the cup base 25. The fifth air guide shroud 5 has a third connecting port 53 outside the vortex heat dissipation channel 52, which connects to the heat dissipation channel inlet on the bottom surface of the cup base 25. A cooling fan 26 is driven and connected to the bottom of the motor 22, and the cooling fan 26 passes through the fifth air guide shroud 5 and is positioned at the center of the vortex heat dissipation channel 52. A heat dissipation channel is provided inside the cup base 25.

[0043] The cooling fan 26 discharges airflow from the vortex cooling duct 52, drawing in airflow through the inlet of the cooling channel. The airflow enters the upper part of the fifth air guide shroud 5 via the third connecting port 53. The airflow flows from between the top of the motor 22 and the heating plate 23, through the inside of the motor 22, to the vortex cooling duct 52 at the bottom of the fifth air guide shroud 5, forming the cooling channel. The cooling channel provides heat dissipation for the bottom of the motor 22 and the heating plate 23.

[0044] The embedded groove 10 has a positioning protrusion 7 extending upward from its bottom surface. The air inlet channel outlet is located within the positioning protrusion 7. The cup base 25 has a positioning groove 8, with the heat dissipation channel inlet located at the bottom of the positioning groove 8. The positioning protrusion 7 is hollow inside, with a first connecting hole 71 at its top. A first transverse partition 72 is located inside the positioning protrusion 7 corresponding to the first connecting hole 71. The first transverse partition 72 and the first connecting hole 71 coincide in the vertical projection direction. A first gap 70 for airflow is left between the side of the first transverse partition 72 and the positioning protrusion 7. A second transverse partition 81 is located inside the cup base 25 corresponding to the heat dissipation channel inlet. The second transverse partition 81 is suspended above the heat dissipation channel inlet by a support 82. The heat dissipation channel inlet and the second transverse partition 81 coincide in the vertical projection direction. A second gap 83 for airflow is formed between the heat dissipation channel inlet, the second transverse partition 81, and the support 82. The positioning protrusion 7 is inserted into the positioning groove 8, connecting the heat dissipation channel inlet and the air inlet channel outlet, i.e., connecting the first gap 70 and the second gap 83.

[0045] The mixing cup assembly 2 is seated in the embedded slot 10 of the main unit 1. The air inlet channel draws air in from the bottom side of the main unit 1. The air inlet channel outlet is connected to the heat dissipation channel inlet in the embedded slot 10. The heat dissipation channel outlet is connected to the air outlet channel inlet. The air outlet channel exhausts air from the bottom rear side of the main unit 1.

[0046] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0047] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0048] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0049] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. An improved heat dissipation structure for a mixer, comprising a main unit and a mixing cup assembly, the mixing cup assembly including a cup body, a motor, and a cup base; a circuit board is provided inside the main unit; and an embedding groove for accommodating the mixing cup assembly is provided on the top of the main unit, characterized in that... The main unit has separate air intake and exhaust channels. The cup base has a heat dissipation channel for motor cooling. The circuit board is placed in the air intake channel. The air intake channel draws air in from the bottom side of the main unit. The air intake channel outlet is connected to the heat dissipation channel inlet in the embedded groove. The heat dissipation channel outlet is connected to the air exhaust channel inlet. The air exhaust channel exhausts air from the bottom rear side of the main unit.

2. The improved heat dissipation structure for the mixer according to claim 1, characterized in that, The main unit includes a bottom shell with an air inlet for the air intake channel. A barrier "door" frame is provided on the inner side of the bottom shell corresponding to the air inlet. The barrier "door" frame coincides with the air inlet in the vertical projection direction. A T-shaped flow channel is formed between the barrier "door" frame and the air inlet. The air inlet and the air intake channel are connected through the T-shaped flow channel.

3. The improved heat dissipation structure for the mixer according to claim 1, characterized in that, The main unit includes a bottom shell, a middle shell, and a top shell. The bottom shell is fixed to the bottom surface of the middle shell, and the top shell is placed on the top of the middle shell. The top of the top shell is recessed into the middle shell to form the embedded groove. A first air duct cover is provided on the bottom surface of the top shell. A circuit board is provided on the bottom surface of the first air duct cover. A circuit board box is provided below the circuit board in the first air duct cover. The air inlet channel passes between the circuit board box and the first air duct cover.

4. The improved heat dissipation structure for the mixer according to claim 3, characterized in that, The first air duct cover has a first air guide duct on its side, and the circuit board box has a second air guide duct on its side. The bottom side of the second air guide duct is connected to the inside of the circuit board box. The top of the second air guide duct is vertically aligned and connected to the bottom of the first air guide duct. The top of the first air guide duct is aligned and connected to the outlet of the air inlet channel.

5. The improved heat dissipation structure for the mixer according to claim 4, characterized in that, A water collection trough with an upward opening is located directly below the outlet of the air inlet channel inside the first air guide duct.

6. The improved heat dissipation structure for the mixer according to claim 5, characterized in that, The bottom of the air inlet channel outlet extends downward to form a lower enclosure wall, which is inserted into the water collection tank. A gap is left between the lower enclosure wall and the water collection tank to allow airflow to pass through. The top of the first air guide channel is connected to the air inlet channel outlet through the gap.

7. The improved heat dissipation structure for the mixer according to claim 3, characterized in that, The rear of the first air duct cover is provided with a third air guide cover, and the top surface of the rear of the bottom shell is provided with a fourth air guide cover. The bottom of the third air guide cover and the top of the fourth air guide cover are connected. The bottom surface of the embedded groove is provided with the air outlet channel inlet. The top of the third air guide cover is aligned with and connected to the air outlet channel inlet. The air outlet channel inlet is provided with several inclined air guide vanes.

8. The improved heat dissipation structure for the mixer according to claim 1, characterized in that, The bottom surface of the embedded groove extends upward with a positioning protrusion. The air inlet channel outlet is located inside the positioning protrusion. The cup base is provided with a positioning groove. The bottom of the positioning groove is provided with the heat dissipation channel inlet. The positioning protrusion is inserted into the positioning groove. The heat dissipation channel inlet and the air inlet channel outlet are connected.

9. The improved heat dissipation structure for the mixer according to claim 8, characterized in that, The positioning protrusion is hollow inside, and a first connecting hole is provided at the top of the positioning protrusion. A first transverse partition is provided inside the positioning protrusion corresponding to the first connecting hole. The first transverse partition and the first connecting hole coincide in the vertical projection direction. A first gap for airflow is left between the side of the first transverse partition and the positioning protrusion. A second transverse partition is provided inside the cup base corresponding to the heat dissipation channel inlet. The second transverse partition is suspended above the heat dissipation channel inlet by a support. The heat dissipation channel inlet and the second transverse partition coincide in the vertical projection direction. A second gap for airflow is formed between the heat dissipation channel inlet, the second transverse partition and the support.

10. The improved heat dissipation structure for the mixer according to claim 1, characterized in that, The mixing cup assembly also includes a heating plate at the bottom of the cup body, a fixed bracket, and a fifth air guide shroud. The motor is suspended below the heating plate. The top of the fixed bracket is connected and fixed to the bottom of the cup body, and the bottom of the fixed bracket is connected and fixed to the cup base. The fifth air guide shroud is located between the fixed bracket and the cup base. The top of the fifth air guide shroud has a heat dissipation cavity for accommodating the motor. The lower part of the fifth air guide shroud has a vortex heat dissipation channel. The end of the vortex heat dissipation channel is vertically connected to the bottom surface of the cup base. The fifth air guide shroud has a third connecting port outside the vortex heat dissipation channel. The third connecting port is connected to the heat dissipation channel inlet on the bottom surface of the cup base. A cooling fan is driven and connected to the bottom of the motor. The cooling fan passes through the fifth air guide shroud and is located in the center of the vortex heat dissipation channel.

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