Air duct structure of stirrer

Abstract

The utility model relates to the technical field of stirrers, in particular to an air duct structure of a stirrer, which comprises a host assembly, a first air duct is arranged in the host assembly, and a fan assembly and a circuit board are arranged in the first air duct; the main machine assembly is in driving connection with the stirring rod assembly, a second air duct is arranged in the stirring rod assembly, the second air duct is communicated with the first air duct, a cutter shaft assembly is arranged in the second air duct, and the cutter shaft assembly is in transmission connection with the fan assembly. According to the arrangement, the first air duct is arranged in the host assembly, and the first air duct can be used for dissipating high-temperature heat generated when the circuit board and the fan assembly work; the second air duct communicated with the first air duct is arranged in the stirring rod assembly, and the second air duct can be used for dissipating high-temperature heat generated when the cutter shaft assembly works, so that the stirring performance of the stirrer can be improved, and the service life of the stirrer can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers, in particular to an air duct structure of a mixer. Background Art

[0002] At present, the market is increasingly using handheld blenders, and the demand for waterproof grade, rotation speed, and high power is also getting higher and higher; the higher the power, the higher the temperature of the motor, so the market is in urgent need of blender products that can reduce the temperature of the motor, the temperature of the casing, and the high temperature inside the stirring rod.

[0003] The Chinese utility model patent with patent announcement number CN112386130A discloses a food stirring rod structure, including a housing, an air outlet, an air inlet, a spacer, a spacer, a power plug, a start switch, a circuit board integration, a motor component, an output shaft component and other components. A spacer is provided between the housing and the motor component at a position corresponding to the air outlet, and the end face of the spacer has a convex lip that is rolled outward. A spacer is provided between the housing and the motor component at a position corresponding to the air inlet, and the end face of the spacer has a convex lip that is rolled outward. When the prior art dissipates heat, a fan generates a ventilation and heat dissipation airflow, and the air enters the housing cavity from the air inlet on the housing, detours along the outer surface of the spacer, and then enters the opening with the lip in a direction close to the vertical direction of the air inlet and the opening of the end face of the spacer, flows through the surfaces of the rotor and stator of the motor component, and then passes through the inner cavity of the spacer, turns around and bypasses the lip, and flows out from the air outlet. However, the prior art still has structural deficiencies, and it can only dissipate heat for motor components in the casing, but cannot dissipate heat for the stirring rod.

[0004] Therefore, there is still room for improvement and development in the existing technology. Utility Model Content

[0005] In response to the problems in the prior art, the utility model provides an air duct structure for a blender, in which a first air duct is provided in a main engine assembly, and the first air duct can be used to dissipate the high-temperature heat generated by a circuit board and a fan assembly when they are working; a second air duct connected to the first air duct is provided in a stirring rod assembly, and the second air duct can be used to dissipate the high-temperature heat generated by a knife shaft assembly when it is working, thereby improving the stirring performance of the blender and the service life of the blender.

[0006] In order to achieve the above purpose, the technical solution applied by the utility model is as follows:

[0007] A blender air duct structure includes a main unit component, wherein a first air duct is provided in the main unit component, wherein a fan component and a circuit board are provided in the first air duct; and a stirring rod component, wherein the main unit component is drivingly connected to the stirring rod component, wherein a second air duct is provided in the stirring rod component, wherein the second air duct is communicated with the first air duct, wherein a knife shaft component is provided in the second air duct, wherein the knife shaft component is drivingly connected with the fan component. In this arrangement, by providing the first air duct in the main unit component, the first air duct can be used to dissipate the high temperature heat generated when the circuit board and the fan component are working; by providing the second air duct in the stirring rod component, which is communicated with the first air duct, the second air duct can be used to dissipate the high temperature heat generated when the knife shaft component is working, thereby improving the mixing performance of the blender and the service life of the blender.

[0008] According to the above scheme, the stirring rod assembly includes a main machine connection head and a stirring head, the first end of the main machine connection head is connected to the main machine assembly, and the second end of the main machine connection head is fixedly connected to the stirring head; the knife shaft assembly includes a knife shaft and a stirring knife, the first end of the knife shaft is arranged in the main machine connection head, and the second end of the knife shaft is fixedly connected to the stirring knife after passing through the stirring head, and a second air duct is formed between the outer wall of the knife shaft and the inner wall of the main machine connection head and the stirring head. This arrangement is convenient for assembly, and the second air duct is arranged between the outer wall of the knife shaft and the inner wall of the main machine connection head and the stirring head to take away the high temperature heat generated by the knife shaft during operation.

[0009] According to the above scheme, the second end of the host connector is formed with an air duct, which extends into the mixing head; the first end of the blade shaft is located in the air duct, an inner air duct is formed between the outer wall of the blade shaft and the inner wall of the air duct, an outer air duct is formed between the outer wall of the air duct and the inner wall of the mixing head, and the inner air duct and the outer air duct are connected to form a second air duct. In this way, by arranging an air duct on the host connector, the air duct divides the second air duct into an inner air duct and an outer air duct, more specifically, by connecting the inner air duct and the outer air duct to form a double-layer structure of the second air duct, the air duct has a long travel and a better heat dissipation effect.

[0010] According to the above solution, the main engine connecting head is provided with a second air inlet connected to the inner air duct, and the stirring head is provided with a second air outlet connected to the outer air duct.

[0011] According to the above scheme, the second air inlet is arranged at the first end of the main unit connector, the second air outlet is arranged at the connection between the main unit connector and the mixing head, and the opening of the second air outlet is arranged downward. In this way, the second air inlet and the second air outlet are arranged on the main unit connector and the mixing head respectively, which is more reasonable in design, and the opening of the second air outlet is arranged downward, which is not easy to get water in when the mixer is working, and the waterproof level is improved; in actual application, the second air outlet is a circular air outlet, which has good ventilation effect and beautiful appearance, thereby improving the mixing performance.

[0012] According to the above solution, a ventilation slot is formed in the host connector, and the ventilation slot is located between the second air inlet of the host connector and the inlet of the air duct, and the inlet of the air duct is formed with a chamfered opening. This arrangement has a better air guiding effect, allowing the wind flow to quickly enter the air duct.

[0013] According to the above scheme, the first end of the blade shaft is provided with a blade shaft connector which is transmission-connected to the fan assembly; the upper part of the blade shaft is provided with an upper bearing which is provided corresponding to the air guide pipe; the lower part of the blade shaft is provided with a lower bearing which is provided corresponding to the stirring head. In this way, the stirring effect is better. It should be noted that the second air duct can take away the high temperature heat generated by the blade shaft and the upper and lower bearings during operation of the blade shaft.

[0014] According to the above solution, the host assembly includes a body, a first air inlet is provided at the first end of the body, a second end of the body is connected to the first end of the host connector, a first air outlet is provided at the second end of the body, the first air inlet and the first air outlet are connected through a first air duct; the first air outlet is connected to the second air inlet of the host connector. In this way, the first air duct and the second air duct are connected to form a heat dissipation air duct of the entire blender.

[0015] According to the above scheme, the fan assembly includes a motor, a fan blade and a transmission rod, the fan blade is fixed on the transmission rod, the first end of the transmission rod is fixedly connected to the output end of the motor, and the second end of the transmission rod is coupled to the blade shaft connector of the blade shaft. In this way, when the motor is working, it not only drives the fan blade to rotate at high speed to form a siphon, but also drives the blade shaft to rotate at high speed to achieve a stirring function.

[0016] According to the above solution, the host component is provided with a control panel corresponding to the circuit board.

[0017] Beneficial effects of the utility model:

[0018] The utility model is configured as follows: a first air duct is provided in the main engine assembly, and the first air duct can be used to dissipate the high-temperature heat generated by the circuit board and the fan assembly when they are working; a second air duct connected to the first air duct is provided in the stirring rod assembly, and the second air duct can be used to dissipate the high-temperature heat generated by the knife shaft assembly when it is working, thereby improving the stirring performance of the mixer and the service life of the mixer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a sectional view of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the stirring rod assembly of the utility model;

[0021] Figure 3 This is an exploded view of the stirring rod assembly of the utility model;

[0022] Figure 4 It is a top view of the host connector of the utility model.

[0023] In the figure:

[0024] 1. Blade shaft connector; 2. Main unit connector; 3. Air duct; 4. Upper bearing; 5. Blade shaft; 6. Lower bearing; 7. Stirring head; 8. Stirring blade; 10. Second air inlet; 11. Ventilation slot; 12. Chamfered opening; 13. Inner air duct; 14. Outer air duct; 15. Second air outlet; 20. Body; 21. First air inlet; 22. Circuit board; 23. Motor; 24. Fan blades; 25. Transmission rod; 26. First air outlet; 27. First air duct; 28. Control panel. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1 to 4 As shown, the air duct structure of a mixer described in the utility model includes a main unit component, wherein a first air duct 27 is provided in the main unit component, and a fan component and a circuit board 22 are provided in the first air duct 27; and a stirring rod component, wherein the main unit component is drivingly connected to the stirring rod component, and a second air duct is provided in the stirring rod component, and the second air duct is communicated with the first air duct 27, and a knife shaft component is provided in the second air duct, and the knife shaft component is drivingly connected with the fan component. In this arrangement, by providing the first air duct 27 in the main unit component, the first air duct 27 can be used to dissipate the high temperature heat generated when the circuit board 22 and the fan component are working; by providing the second air duct connected with the first air duct 27 in the stirring rod component, the second air duct can be used to dissipate the high temperature heat generated when the knife shaft component is working, thereby improving the mixing performance of the mixer and the service life of the mixer.

[0027] In this embodiment, the stirring rod assembly includes a main machine connection head 2 and a stirring head 7, the first end of the main machine connection head 2 is connected to the main machine assembly, and the second end of the main machine connection head 2 is fixedly connected to the stirring head 7; the knife shaft assembly includes a knife shaft 5 and a stirring knife 8, the first end of the knife shaft 5 is arranged in the main machine connection head 2, and the second end of the knife shaft 5 is fixedly connected to the stirring knife 8 after passing through the stirring head 7, and a second air duct is formed between the outer wall of the knife shaft 5 and the inner wall of the main machine connection head 2 and the stirring head 7. This arrangement is convenient for assembly, and the second air duct is arranged between the outer wall of the knife shaft 5 and the inner wall of the main machine connection head 2 and the stirring head 7 to take away the high temperature heat generated by the knife shaft 5 during operation.

[0028] In this embodiment, the second end of the host connector 2 is formed with an air duct 3, and the air duct 3 extends into the mixing head 7; the first end of the blade shaft 5 is located in the air duct 3, and an inner air duct 13 is formed between the outer wall of the blade shaft 5 and the inner wall of the air duct 3, and an outer air duct 14 is formed between the outer wall of the air duct 3 and the inner wall of the mixing head 7, and the inner air duct 13 and the outer air duct 14 are connected to form a second air duct. In this way, by setting the air duct 3 on the host connector 2, the air duct 3 divides the second air duct into the inner air duct 13 and the outer air duct 14, more specifically, the second air duct with a double-layer structure is formed by connecting the inner air duct 13 and the outer air duct 14, and the air duct travel is long, and the heat dissipation effect is better.

[0029] In this embodiment, the host connector 2 is provided with a second air inlet 10 connected to the inner air duct 13, and the mixing head 7 is provided with a second air outlet 15 connected to the outer air duct 14; more specifically, the second air inlet 10 is provided at the first end of the host connector 2, and the second air outlet 15 is provided at the connection between the host connector 2 and the mixing head 7, and the opening of the second air outlet 15 is arranged downward. In this way, the second air inlet 10 and the second air outlet 15 are respectively arranged on the host connector 2 and the mixing head 7, which is more reasonable in design, and the opening of the second air outlet 15 is arranged downward, which is not easy to enter water during the operation of the mixer, and the waterproof level is improved; in actual application, the second air outlet 15 is a circular air outlet, which has good ventilation effect and beautiful appearance, thereby improving the mixing performance.

[0030] In this embodiment, a ventilation slot 11 is formed in the host connector 2, and the ventilation slot 11 is located between the second air inlet 10 of the host connector 2 and the inlet of the air duct 3, and the inlet of the air duct 3 is formed with a chamfered opening 12. This arrangement has a better air guiding effect, so that the wind can quickly enter the air duct 3.

[0031] In this embodiment, the first end of the blade shaft 5 is provided with a blade shaft connector 1 which is transmission-connected to the fan assembly; the upper portion of the blade shaft 5 is sleeved with an upper bearing 4 which is arranged corresponding to the air guide duct 3; the lower portion of the blade shaft 5 is sleeved with a lower bearing 6 which is arranged corresponding to the stirring head 7. In this way, the stirring effect is better. It should be noted that the second air duct can take away the high temperature heat generated by the blade shaft 5 and the upper bearing 4 and the lower bearing 6 during operation.

[0032] In this embodiment, the host assembly includes a body 20, a first air inlet 21 is provided at the first end of the body 20, a second end of the body 20 is connected to the first end of the host connector 2, a first air outlet 26 is provided at the second end of the body 20, the first air inlet 21 and the first air outlet 26 are connected through a first air duct 27; the first air outlet 26 is connected to the second air inlet 10 of the host connector 2. In this way, the first air duct and the second air duct are connected to form a heat dissipation air duct of the entire blender.

[0033] In this embodiment, the fan assembly includes a motor 23, a fan blade 24 and a transmission rod 25, the fan blade 24 is fixed on the transmission rod 25, the first end of the transmission rod 25 is fixedly connected to the output end of the motor 23, and the second end of the transmission rod 25 is coupled to the blade shaft connector 1 of the blade shaft 5. In this way, when the motor 23 is working, it not only drives the fan blade 24 to rotate at a high speed to form a siphon, but also drives the blade shaft 5 to rotate at a high speed to achieve a stirring function.

[0034] In this embodiment, the host assembly is provided with a control panel 28 corresponding to the circuit board 22. This arrangement is simple to operate.

[0035] The working principle of the mixer described in the utility model:

[0036] During operation, the user operates the control panel 28 to start the motor 23, driving the stirring rod assembly to rotate at a high speed for stirring. At this time, the circuit board 22, the motor 23, the blade 5 and the bearing will generate a large amount of heat. While the motor 23 is working, it drives the fan blades 24 to rotate to form a siphon effect, and air is sucked into the fuselage 20 from the first air inlet 21 on the top of the fuselage 20, and a high-speed airflow is formed. The airflow passes through the circuit board 22 and the motor 23 to take away the high-temperature heat generated; further, under the action of the fan blades 24, the airflow smoothly enters the inner air duct 13 in the air duct 3 from the ventilation slots 11 of the main connector 2 and the chamfered openings 12 of the air duct 3, and takes away the heat of the blade 5 and the upper bearing 4. Then the airflow continues to go down, and after the heat is taken away by the lower bearing 6, the airflow swirls into the outer air duct 14, and finally is discharged from the second air outlet 15 between the main connector 2 and the stirring head 7, and all the heat is taken away, thereby achieving the effect of cooling the main assembly and the stirring rod assembly, avoiding damage to parts at high temperatures, and greatly extending the use time and service life of the mixer.

[0037] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A mixer air duct structure, characterized in that: include: A host assembly, wherein a first air duct is provided in the host assembly, and a fan assembly and a circuit board are provided in the first air duct; A stirring rod assembly, the main engine assembly is drivingly connected to the stirring rod assembly, a second air duct is arranged in the stirring rod assembly, the second air duct is communicated with the first air duct, a knife shaft assembly is arranged in the second air duct, and the knife shaft assembly is drivingly connected to the fan assembly.

2. The air duct structure of a mixer according to claim 1, characterized in that: The stirring rod assembly includes a main engine connecting head and a stirring head, wherein the first end of the main engine connecting head is connected to the main engine assembly, and the second end of the main engine connecting head is fixedly connected to the stirring head; the knife shaft assembly includes a knife shaft and a stirring knife, wherein the first end of the knife shaft is arranged in the main engine connecting head, and the second end of the knife shaft is fixedly connected to the stirring knife after passing through the stirring head, and a second air duct is formed between the outer wall of the knife shaft and the inner walls of the main engine connecting head and the stirring head.

3. The air duct structure of a mixer according to claim 2, characterized in that: An air duct is formed on the second end of the main connecting head, and the air duct extends into the mixing head; the first end of the knife shaft is located in the air duct, an inner air duct is formed between the outer wall of the knife shaft and the inner wall of the air duct, an outer air duct is formed between the outer wall of the air duct and the inner wall of the mixing head, and the inner air duct is connected with the outer air duct to form a second air duct.

4. The air duct structure of a mixer according to claim 3, characterized in that: The main engine connecting head is provided with a second air inlet communicated with the inner air duct, and the stirring head is provided with a second air outlet communicated with the outer air duct.

5. The air duct structure of a mixer according to claim 4, characterized in that: The second air inlet is arranged at the first end of the main unit connecting head, the second air outlet is arranged at the connection between the main unit connecting head and the stirring head, and the opening of the second air outlet is arranged downward.

6. The air duct structure of a mixer according to claim 3, characterized in that: A ventilation groove is formed in the host connector, and the ventilation groove is located between the second air inlet of the host connector and the inlet of the air guide duct, and the inlet of the air guide duct is formed with a chamfered opening.

7. The air duct structure of a mixer according to claim 2, characterized in that: The first end of the knife shaft is provided with a knife shaft connector which is transmission-connected to the fan assembly; the upper part of the knife shaft is provided with an upper bearing which is arranged corresponding to the air guide duct; the lower part of the knife shaft is provided with a lower bearing which is arranged corresponding to the stirring head.

8. The air duct structure of a mixer according to claim 2, characterized in that: The host assembly includes a fuselage, a first end of the fuselage is provided with a first air inlet, a second end of the fuselage is connected to the first end of the host connector, a second end of the fuselage is provided with a first air outlet, the first air inlet and the first air outlet are connected through a first air duct; the first air outlet is connected to the second air inlet of the host connector.

9. The air duct structure of a mixer according to claim 7, characterized in that: The fan assembly includes a motor, fan blades and a transmission rod, the fan blades are fixed on the transmission rod, the first end of the transmission rod is fixedly connected to the output end of the motor, and the second end of the transmission rod is coupled to the knife shaft connector of the knife shaft.

10. The air duct structure of a mixer according to claim 1, characterized in that: The host assembly is provided with a control panel corresponding to the circuit board.

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