Impeller heat dissipation structure of an electrically driven stirring mechanism

Abstract

The utility model relates to an impeller heat dissipation structure of an electric-driven stirring mechanism in the technical field of electric stirring mechanisms, comprising a motor driving part, a first stirring transmission part and a second stirring transmission part, the first stirring transmission part comprising a first shell and a first transmission assembly, the second stirring transmission part comprising a second shell and a second transmission assembly, a rotatable stirring shaft and a volute are provided on the top of the first stirring transmission part, an impeller part is provided on the bottom of the stirring shaft, the center of the volute is an air inlet, the stirring shaft part is rotatably arranged in the air inlet, an air outlet is provided on one side of the volute along the tangent, a conducting structure is formed between the air outlet and the air inlet, the stator and rotor of the motor driving part or the brush of the motor driving part are effectively dissipated and cooled, an air flow of the electric-driven stirring mechanism is increased, and at the same time, the impeller part is reasonably transferred to one side of the motor driving part through the stirring shaft, the structure is ingenious and compact, and the technical problem that the original heat dissipation impeller lacks transferable space is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric stirring mechanisms, in particular to an impeller heat dissipation structure of an electric driven stirring mechanism. Background Art

[0002] The mixing mechanism inside the existing food mixer is generally designed with a gear transmission structure, and then the corresponding motor is purchased for power output connection. However, the existing food mixer requires a reasonable design, neat appearance, and overall development in the direction of small size and light weight. Therefore, in response to these current situations, our company has developed an integrated two-way drive mixing mechanism, the purpose of which is to optimize the volume of the mixing mechanism, reduce the investment in the traditional motor end cover or shell, and achieve lightweight and miniaturization improvements while ensuring that the power output remains unchanged.

[0003] Since the internal structure of the motor is integrated through the outer shell of the stirring transmission parts on both sides, the original heat dissipation impeller of the motor lacks space for transfer. Although the lack of traditional motor end covers or outer shells can increase the contact space between the motor and the air, it is still necessary to use wind energy to dissipate heat and cool the stator and rotor or brushes of the motor. Therefore, in view of these current situations, it is urgent to develop an impeller heat dissipation structure for an electric-driven stirring mechanism to meet the needs of actual use. Utility Model Content

[0004] The utility model aims to provide an impeller heat dissipation structure of an electrically driven stirring mechanism, which is used to solve the technical problem that the motor needs to dissipate heat and cool the stator and rotor or the brushes.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The invention discloses an impeller heat dissipation structure of an electric-driven stirring mechanism, comprising a motor driving part, a first stirring transmission part and a second stirring transmission part, wherein the first stirring transmission part comprises a first shell and a first transmission assembly, and the second stirring transmission part comprises a second shell and a second transmission assembly, the motor driving part comprises a stator and a rotor, the interior of the stator is a hollow structure, and the rotor is rotatably arranged inside the stator, the two end surfaces of the stator are respectively fixedly connected to the first shell and the second shell, and the two ends of the rotor are respectively movably connected to the first transmission assembly and the second transmission assembly, a rotatable stirring shaft and a volute are provided on the top of the first stirring transmission part, an impeller part is provided on the bottom of the stirring shaft, the center of the volute is an air inlet, the stirring shaft is rotatably arranged in the air inlet, an air outlet is opened on one side of the volute along the tangent, and a conducting structure is formed between the air outlet and the air inlet.

[0007] In the above description, as a further solution, the impeller part is composed of a plurality of sheet-like blades distributed along the center of the stirring shaft, and the impeller part and the stirring shaft are an integrally formed structure.

[0008] In the above description, as a further solution, the stator is provided with fastening bolts at the four corners of the rotor, and the corresponding connection points of the first shell and the second shell are provided with plug-in holes, and the two ends of the fastening bolts are respectively plugged into the plug-in holes of the first shell and the second shell, and are threadedly connected through fixing nuts.

[0009] In the above description, as a further solution, the rotor includes a rotor core, a coil winding and an output shaft, the coil winding is wrapped around the inside of the rotor core, and the two ends of the output shaft are horizontally raised and arranged on both sides of the rotor core, and the output shaft is movably connected to the first transmission assembly and the second transmission assembly respectively.

[0010] In the above description, as a further solution, a commutator is provided at one end of the rotor core, and the commutator is electrically connected to the coil winding. A mounting groove is provided on the side of the second shell close to the motor drive part, and a brush matching the commutator is provided inside the mounting groove. When the stator is fixedly connected to the second shell, the commutator can extend into the interior of the second shell, and the contact end of the brush can contact the surface of the commutator.

[0011] In the above description, as a further solution, the first shell and the second shell are both provided with a rotating connection piece at one end close to the motor driving part, and the two ends of the output shaft are rotatably arranged inside the first shell and the second shell through the rotating connection piece.

[0012] In the above description, as a further solution, the rotating connecting member arranged in the first shell is composed of a rotating ball head, the surface area of ​​the rotating ball head is an arc-shaped structure, the center of the rotating ball head is a hollow structure, one end of the output shaft is plugged into the center of the rotating ball head, and the rotating ball head is rotatably connected to the first shell.

[0013] In the above description, as a further solution, the rotating connection member arranged in the second housing is composed of a bearing, one end of the output shaft is plugged into the bearing, and the output shaft is rotatably connected to the second housing through the bearing.

[0014] The beneficial effects produced by the utility model are as follows:

[0015] The impeller heat dissipation structure of an electrically driven stirring mechanism of the present application is characterized in that an impeller portion is arranged at the bottom of a stirring shaft at one end of a first stirring transmission portion, and the impeller portion is rotatably arranged inside a volute, so that the wind flow generated by the stirring shaft in the horizontal direction can be guided along the volute from the motor driving portion to the side of the first stirring transmission portion, which can effectively dissipate heat and cool the stator and rotor or brushes of the motor driving portion, thereby increasing the air flow of the electrically driven stirring mechanism. At the same time, the impeller portion is reasonably transferred to the side of the motor driving portion through the stirring shaft. The structure is ingenious and compact, and the technical problem of the lack of transferable space for the original heat dissipation impeller is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an impeller heat dissipation structure of an electric-driven stirring mechanism described in the utility model;

[0017] Figure 2 It is a schematic diagram of the structural decomposition of the impeller heat dissipation structure of an electric-driven stirring mechanism described in the utility model;

[0018] Figure 3 It is a schematic cross-sectional view of the impeller heat dissipation structure of an electrically driven stirring mechanism of the utility model;

[0019] Figure 4 for Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0020] Figure 5 This is a schematic structural diagram of a stirring shaft in an electric-driven stirring mechanism of the utility model;

[0021] In the figure: 1-motor drive unit, 11-stator, 12-rotor, 121-rotor core, 122-coil winding, 123-output shaft, 13-commutator, 2-first stirring transmission unit, 21-first shell, 22-first transmission assembly, 23-rotating ball head, 24-stirring shaft, 241-impeller, 25-volute, 251-air inlet, 252-air outlet, 3-second stirring transmission unit, 31-second shell, 311-mounting groove, 32-second transmission assembly, 33-bearing, 4-fastening bolts, 5-fixing nuts, 6-plug holes, 7-brush. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0023] See also Figure 1-5The impeller heat dissipation structure of an electric-driven stirring mechanism specifically implemented therein comprises a motor driving part 1, a first stirring transmission part 2 and a second stirring transmission part 3, wherein the first stirring transmission part 2 comprises a first shell 21 and a first transmission assembly 22, wherein the second stirring transmission part 3 comprises a second shell 31 and a second transmission assembly 32, wherein the motor driving part 1 comprises a stator 11 and a rotor 12, wherein the interior of the stator 11 is a hollow structure, and the rotor 12 is rotatably arranged inside the stator 11, wherein the two end surfaces of the stator 11 are respectively fixedly connected to the first shell 21 and the second shell 31, and the two ends of the rotor 12 are respectively connected to the first transmission assembly 21 and the second transmission assembly 32. The first stirring transmission part 2 is movably connected to the second transmission part 32. A rotatable stirring shaft 24 and a volute 25 are provided on the top of the first stirring transmission part 2. An impeller part 241 is provided on the bottom of the stirring shaft 24. The center of the volute 25 is an air inlet 251. The stirring shaft 24 is rotatably arranged in the air inlet 251. The volute 25 is provided with an air outlet 252 on one side along the tangent line. The air outlet 252 and the air inlet 251 are in a conducting structure. The impeller part 241 is composed of a plurality of sheet-like blades distributed along the center of the stirring shaft 24. The impeller part 241 and the stirring shaft 24 are an integrated structure. Figure 5 shown.

[0024] The connection between the stator 11 and the first stirring transmission part 2 and the second stirring transmission part 3 is as follows: Figure 2 and Figure 4 As shown, the stator 11 is provided with fastening bolts 4 at the four corners of the rotor 12, and the corresponding connecting parts of the first shell 21 and the second shell 31 are provided with plug-in holes 6, and the two ends of the fastening bolts 4 are respectively plugged into the plug-in holes 6 of the first shell 21 and the second shell 31, and are threadedly connected through the fixing nuts 5.

[0025] Specifically, the structure of the rotor 12 is as follows: Figure 2 and 3 As shown, the rotor 12 includes a rotor core 121, a coil winding 122 and an output shaft 123. The coil winding 122 is wrapped around the inside of the rotor core 121. The two ends of the output shaft 123 are horizontally raised and arranged on both sides of the rotor core 121. The output shaft 123 is movably connected to the first transmission assembly 22 and the second transmission assembly 32 respectively.

[0026] The first shell 21 and the second shell 31 are both provided with a rotating connecting piece at one end close to the motor drive unit 1, and the two ends of the output shaft 123 are rotatably arranged inside the first shell 21 and the second shell 31 through the rotating connecting piece respectively. The rotating connecting piece arranged in the first shell 21 is composed of a rotating ball head 23, and the surface area of ​​the rotating ball head 23 is an arc-shaped structure. The center of the rotating ball head 23 is a hollow structure. One end of the output shaft 123 is plugged into the center of the rotating ball head 23, and the rotating ball head 23 is rotatably connected to the first shell 21. The rotating connecting piece arranged in the second shell 31 is composed of a bearing 33, and one end of the output shaft 123 is plugged into the bearing 33, and the output shaft 123 is rotatably connected to the second shell 31 through the bearing 33.

[0027] By reducing the end cover or housing used to fix the stator 11 and the rotor 12 in the traditional motor, the two end surfaces of the stator 11 are fixedly connected to the housings of the first stirring transmission part 2 and the second stirring transmission part 3 respectively, and at the same time, the two ends of the rotor 12 are directly connected to the transmission components inside the first stirring transmission part 2 and the second stirring transmission part 3, so that the motor drive part 1 and the first stirring transmission part 2 and the second stirring transmission part 3 bracket form an integrated structure, which optimizes the volume of the stirring mechanism and reduces the investment in the traditional motor end cover or housing. While ensuring that the power output remains unchanged, it has the advantages of lightweight and miniaturization, and is suitable for promotion in the field of food mixers.

[0028] In the above description, as a further solution, a commutator 13 is provided at one end of the rotor core 121, and the commutator 13 is electrically connected to the coil winding 122. A mounting groove 311 is provided on the side of the second shell 31 close to the motor drive unit 1, and a brush 7 matching the commutator 13 is provided inside the mounting groove 311. When the stator 11 is fixedly connected to the second shell 31, the commutator 13 can extend to the inside of the second shell 31, and the contact end of the brush 7 can contact the surface of the commutator 13.

[0029] The working principle of an impeller heat dissipation structure of an electrically driven stirring mechanism is as follows: an impeller portion 241 is arranged at the bottom of a stirring shaft 24 at one end of a first stirring transmission portion 2, and the impeller portion 241 is rotatably arranged inside a volute 25, so that the wind flow generated by the stirring shaft 24 in the horizontal direction can be guided along the volute 25 from the motor driving portion 1 to the side of the first stirring transmission portion 2, which can effectively dissipate heat and cool the stator 11 and rotor 12 of the motor driving portion 1 or the brush 7, thereby increasing the air flow of an electrically driven stirring mechanism. At the same time, the impeller portion 241 is reasonably transferred to one side of the motor driving portion 1 through the stirring shaft 24. The structure is ingenious and compact, and the technical problem that the original heat dissipation impeller lacks transferable space is effectively solved.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. An impeller heat dissipation structure of an electric-driven stirring mechanism, comprising a motor drive unit, a first stirring transmission unit and a second stirring transmission unit, wherein the first stirring transmission unit comprises a first shell and a first transmission assembly, the second stirring transmission unit comprises a second shell and a second transmission assembly, the motor drive unit comprises a stator and a rotor, the interior of the stator is a hollow structure, and the rotor is rotatably arranged inside the stator, the two end surfaces of the stator are respectively fixedly connected to the first shell and the second shell, and the two ends of the rotor are respectively movably connected to the first transmission assembly and the second transmission assembly, characterized in that: A rotatable stirring shaft and a volute are provided at the top of the first stirring transmission part, an impeller is provided at the bottom of the stirring shaft, the center of the volute is an air inlet, the stirring shaft is rotatably arranged in the air inlet, an air outlet is opened on one side of the tangent of the volute, and a conducting structure is formed between the air outlet and the air inlet.

2. The impeller heat dissipation structure of an electrically driven stirring mechanism according to claim 1, characterized in that: The impeller part is composed of a plurality of sheet-like blades distributed along the center of the stirring shaft, and the impeller part and the stirring shaft are an integrally formed structure.

3. The impeller heat dissipation structure of an electrically driven stirring mechanism according to claim 1, characterized in that: The stator is provided with fastening bolts at the four corners of the rotor, and the corresponding connecting parts of the first shell and the second shell are provided with plug-in holes. The two ends of the fastening bolts are respectively plugged into the plug-in holes of the first shell and the second shell, and are threadedly connected through fixing nuts.

4. The impeller heat dissipation structure of an electrically driven stirring mechanism according to claim 1, characterized in that: The rotor includes a rotor core, a coil winding and an output shaft. The coil winding is wrapped around the inside of the rotor core. Both ends of the output shaft are horizontally protruded and arranged on both sides of the rotor core. The output shaft is movably connected to the first transmission assembly and the second transmission assembly respectively.

5. The impeller heat dissipation structure of an electrically driven stirring mechanism according to claim 4, characterized in that: A commutator is provided at one end of the rotor core, and the commutator is electrically connected to the coil winding. A mounting groove is provided on the side of the second shell close to the motor drive part, and a brush matching the commutator is provided inside the mounting groove. When the stator is fixedly connected to the second shell, the commutator can extend into the interior of the second shell, and the contact end of the brush can contact the surface of the commutator.

6. The impeller heat dissipation structure of an electrically driven stirring mechanism according to claim 4, characterized in that: The first shell and the second shell are both provided with a rotating connection piece at one end close to the motor driving part, and the two ends of the output shaft are rotatably arranged inside the first shell and the second shell through the rotating connection piece.

7. The impeller heat dissipation structure of the electrically driven stirring mechanism according to claim 6, characterized in that: The rotating connecting member arranged in the first shell is composed of a rotating ball head, the surface area of ​​the rotating ball head is an arc-shaped structure, the center of the rotating ball head is a hollow structure, one end of the output shaft is plugged into the center of the rotating ball head, and the rotating ball head is rotatably connected to the first shell.

8. The impeller heat dissipation structure of an electrically driven stirring mechanism according to claim 6, characterized in that: The rotating connection member arranged in the second housing is composed of a bearing, one end of the output shaft is plugged into the bearing, and the output shaft is rotatably connected to the second housing through the bearing.

Images