CN219458808U - High waterproof low wear's floor washing machine motor - Google Patents
High waterproof low wear's floor washing machine motor Download PDFInfo
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- CN219458808U CN219458808U CN202320589097.9U CN202320589097U CN219458808U CN 219458808 U CN219458808 U CN 219458808U CN 202320589097 U CN202320589097 U CN 202320589097U CN 219458808 U CN219458808 U CN 219458808U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The utility model discloses a high-waterproof low-abrasion floor washing machine motor which comprises a motor shell, a motor base, a motor shaft, a stator, an outer rotor and a movable impeller. The motor adopts an outer rotor structure, an outer rotor shell is matched with a motor shaft to form a containing cavity, the outer rotor, a stator and a rolling bearing are arranged in the containing cavity, and the outer rotor shell is in tight fit connection with the motor shaft, so that the water facing surface of the motor is ensured to be fixed and sealed; a water-gas channel is formed between the outer rotor shell and the motor shell, water and gas enter from the water inlet under the action of the movable impeller and pass through the water-gas channel to the water outlet, and in the process, the rest parts of the outer rotor, the stator and the rolling bearing are not contacted with water, so that the waterproof effect of the motor of the floor washing machine is ensured; meanwhile, a contact type sealing ring is not required to be arranged, so that the waterproof performance is prevented from being reduced due to abrasion while the good waterproof performance is ensured, the influence of friction on power consumption is reduced, and the limit rotating speed of the motor of the floor washing machine is increased.
Description
Technical Field
The utility model relates to a high-waterproof low-abrasion floor washing machine motor, and belongs to the technical field of motors.
Background
The existing floor washing machine is more and more popular with users due to the convenience of the household cleaning appliance, and particularly can be used as a substitute of a mop to quickly and efficiently finish floor cleaning.
In the household cleaning work, the motor for the floor washing machine is required to be used in a wet environment in contact with liquid, so that the waterproof capability of the motor is required to be very high. Meanwhile, the rotating speed of the motor of the floor washing machine is very high and is generally 6-8 ten thousand revolutions, so that the requirement on heating and power consumption of the motor is also very high.
Currently, floor washing machines basically use brushless motors with inner rotors, which seal the motor shaft and bearings, which revolve at high speed. The most commonly used waterproof sealing structures are of two types: one is contact seal, namely, one or more rubber sealing rings are arranged on a motor shaft or a bearing to play a role in sealing. However, the rubber sealing ring can generate friction and heat in the high-speed rotation of the motor of the floor washing machine, the contact surface is easy to wear, and the rubber sealing ring can fail due to aging after long-time use. The other type of non-contact seal is usually a labyrinth seal, i.e. a plurality of annular seal teeth are arranged around the rotating shaft in sequence, a series of interception gaps and expansion cavities are formed between the teeth, and the sealed medium generates throttling effect when passing through the gaps of the labyrinth to achieve the aim of water resistance. The structure does not generate contact abrasion of parts, but because of gaps, even if the labyrinth is more, water still can flow into the motor. Therefore, the existing structure of the floor washing machine motor is difficult to meet the waterproof requirement of the floor washing machine motor.
Therefore, there is a need to develop a novel high waterproof low wear floor scrubber motor to solve the above problems.
Disclosure of Invention
The utility model aims to provide a floor washing machine motor with small abrasion and good waterproof performance.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a high water resistance low wear floor washer motor comprising:
the motor shell is cylindrical and comprises a shell body and a water facing front cover, wherein the shell body comprises a back water surface opposite to the water facing front cover, and a water inlet is formed in the center of the water facing front cover;
the motor base is arranged in the center of the back surface, and the motor base and the shell are integrally formed;
the motor shaft is arranged on the axis of the motor shell and comprises a water facing end close to the water inlet and a fixed end opposite to the water facing end, and the fixed end is in clearance fit with the motor base;
the stator is arranged on the motor shaft, is rotationally connected with the motor shaft through at least two groups of rolling bearings and is fixedly connected with the motor base;
the outer rotor is arranged on the motor shaft and comprises an outer rotor shell arranged on the outermost layer of the outer rotor, the outer rotor shell and the motor shaft are matched to form a containing cavity, the stator and the rolling bearing are arranged in the containing cavity, the outer rotor shell is in tight fit connection with the water facing end, a water-gas channel is formed between the side wall of the outer rotor shell and the side wall of the motor shell, and a water outlet communicated with the water-gas channel is formed on the back surface;
the movable impeller is arranged on the motor shaft and is in close fit connection with the water facing end.
Further, the outer rotor shell is rotatably connected with the motor base through an auxiliary bearing.
Further, an elastic sleeve is arranged between the outer rotor shell and the auxiliary bearing.
Further, an air inlet channel communicated with the accommodating cavity and the outside is formed in the motor base, an air exhaust channel is formed between the outer rotor shell and the back surface, and the air exhaust channel is communicated with the auxiliary bearing and the water outlet.
Further, the diameters of the air inlet channel and the air outlet channel are 3.0-5.0 mm.
Further, a static impeller is arranged in the water-gas channel, and the static impeller is arranged at one end, close to the front cover facing water, in the water-gas channel.
Further, the water outlets are arranged in four, and the four water outlets are distributed at equal intervals.
Further, the movable impeller comprises a pressing cap which is in close fit connection with the water facing end, and a plurality of blades which are detachably connected with the pressing cap.
Further, the at least two sets of rolling bearings are disposed apart.
Further, radially distributed strip-shaped corrugations are arranged on the outer wall of the outer rotor shell.
The utility model has the beneficial effects that:
the floor washing machine motor adopts the structure of the outer rotor, the outer rotor shell is matched with the motor shaft to form the accommodating cavity, the outer rotor, the stator and the rolling bearing are arranged in the accommodating cavity, and the outer rotor shell is in tight fit connection with the motor shaft, so that the water facing surface of the motor is ensured to be fixed and sealed; a water-gas channel is formed between the side wall of the outer rotor shell and the side wall of the motor shell, water and gas enter from the water inlet under the action of the movable impeller and pass through the water-gas channel to the water outlet, and in the process, the rest parts of the outer rotor, the stator and the rolling bearing are not contacted with water, so that the waterproof effect of the motor of the floor washing machine is ensured; meanwhile, a contact type sealing ring is not required, so that good waterproof performance is guaranteed, the waterproof performance is prevented from being reduced due to abrasion of the sealing ring, the influence of friction on power consumption is reduced, the limit rotating speed of a motor of the floor washing machine is increased, and the working requirement of the floor washing machine can be met.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a high waterproof low wear floor scrubber motor according to the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a motor housing; 11. a housing; 111. a water outlet; 12. a front cover facing water; 121. a water inlet; 13. a water gas channel; 14. an exhaust passage; 2. a motor base; 21. an air intake passage; 22. an auxiliary bearing; 23. an elastic sleeve; 3. a motor shaft; 4. a stator; 5. a rolling bearing; 6. an outer rotor; 61. an outer rotor shell; 7. a moving impeller; 71. pressing the cap; 72. a blade; 8. and a static impeller.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a high waterproof low wear floor scrubber motor according to an embodiment of the present utility model is suitable for use in a wet, liquid-contacting environment. It comprises the following steps: the motor comprises a motor housing 1, a motor base 2, a motor shaft 3, a stator 4, a rolling bearing 5, an outer rotor 6, a movable impeller 7 and a stationary impeller 8.
The motor housing 1 is cylindrical, the motor housing 1 comprises a front cover 12 facing water and a shell 11, and the shell 11 is detachably connected with the front cover 12 facing water so as to assemble and disassemble the floor-washing motor. The housing 11 includes a back surface opposite to the front cover 12, a water inlet 121 is provided at the center of the front cover 12, a water outlet 111 is provided on the back surface, which communicates with a sewage tank (not shown), and sewage and air enter the sewage tank through the water inlet 121 and the water outlet 111 by a motor. The four water outlets 111 are arranged, the four water outlets 111 are distributed at equal intervals, so that the working efficiency of the floor washing machine is ensured, and meanwhile, the stress of the floor washing machine in all directions is uniform, and the vibration and noise are reduced.
The motor base 2 is arranged in the center of the back surface, and the motor base 2 and the shell 11 are integrally formed. The motor shaft 3 is arranged on the axis of the motor housing 1, the motor shaft 3 comprises a water facing end close to the water inlet 121 and a fixed end opposite to the water facing end, the fixed end is in clearance fit with the motor base 2, friction does not exist between the motor shaft 3 and the motor base 2, and high-speed rotation of the motor shaft 3 can be guaranteed.
The movable impeller 7 is arranged on the motor shaft 3, and sewage and air enter the sewage tank through the water inlet 121 and the water outlet 111 under the action of the movable impeller 7. The movable impeller 7 is tightly connected with the water facing end so as to realize the high-speed rotation of the movable impeller 7 along with the motor shaft 3. The movable impeller 7 comprises a press cap 71 which is tightly connected with the water facing end and a plurality of blades 72, and the blades 72 are detachably connected with the press cap 71, so that the movable impeller is convenient to clean when the movable impeller is blocked or jammed; while facilitating timely replacement of the blade 72 after long-term use and damage.
The stator 4 is arranged on the motor shaft 3, the stator 4 is rotationally connected with the motor shaft 3 through at least two groups of rolling bearings 5, the stator 4 is fixedly connected with the motor base 2, and at least two groups of rolling bearings 5 are arranged separately. The stator 4 fixedly connected with the motor base 2 and at least two groups of rolling bearings 5 keep the position of the motor shaft 3 fixed, and prevent the motor shaft 3 from shifting in position in the rotating process.
The outer rotor 6 is arranged on the motor shaft 3, the outer rotor 6 comprises an outer rotor shell 61 arranged on the outermost layer of the outer rotor 6, the outer rotor shell 61 and the motor shaft 3 are matched to form a containing cavity, other parts of the outer rotor 6, the stator 4 and the rolling bearing 5 are arranged in the containing cavity, and the outer rotor shell 61 is tightly connected with the motor shaft 3, so that the front cover 12 of the motor facing water is fixedly sealed. A water vapor channel 13 is formed between the side wall of the outer rotor shell 61 and the side wall of the motor housing 1, and sewage and air enter from the water inlet 121, pass through the water vapor channel 13 to the water outlet 111, and then are discharged into a sewage tank. In the process, the rest parts of the outer rotor 6, the stator 4 and the rolling bearing 5 are not contacted with water, so that the waterproof effect of the motor of the floor washing machine is ensured. Meanwhile, a contact type sealing ring is not required, so that good waterproof performance is guaranteed, the waterproof performance is prevented from being reduced due to abrasion of the sealing ring, the influence of friction on power consumption is reduced, the limit rotating speed of a motor of the floor washing machine is increased, and the working requirement of the floor washing machine can be met. The outer wall of the outer rotor shell 61 is provided with radial strip-shaped waves, the contact area between the outer wall of the outer rotor shell 61 and sewage and air in the water-air channel 13 can be increased by the strip-shaped waves, and the heat dissipation effect of the motor is guaranteed.
The outer rotor shell 61 is rotatably connected with the motor base 2 through the auxiliary bearing 22, and an elastic sleeve 23 is arranged between the outer rotor shell 61 and the auxiliary bearing 22. The auxiliary bearing 22 can improve the stability of the outer rotor 6 in the rotation process, reduce the influence of the vibration of the outer rotor 6 on the motor during high-speed rotation, and meet the requirement of the motor on high-speed rotation. The elastic sleeve 23 can play a role in vibration reduction and noise reduction, and can also ensure that the outer rotor 6 cannot be positioned excessively in the rotating process.
The motor base 2 is provided with an air inlet channel 21 communicated with the accommodating cavity and the outside, an air exhaust channel 14 is formed between the outer rotor shell 61 and the back surface, and the air exhaust channel 14 is communicated with the auxiliary bearing 22 and the water outlet 111. Under the action of the movable impeller 7, sewage and air flowing at high speed pass through the exhaust channel 14 and the water outlet 111, and Bernoulli effect is generated near the water outlet 111, so that hot air in the accommodating cavity flows to the water outlet 111 through the gap of the auxiliary bearing 22 and the exhaust channel 14 under the action of negative pressure, and external cold air enters the accommodating cavity through the air inlet channel 21, thereby realizing heat dissipation of the motor and avoiding the condition that the motor is overheated in the high-speed operation process. The diameters of the air inlet channel 21 and the air outlet channel 14 are 3.0-5.0 mm, and the heat dissipation requirement can be met when the motor runs; when the motor stops running, the accommodating cavity and the outside almost have no gas exchange, so that water vapor can be prevented from entering the accommodating cavity to corrode the motor structure.
Further, a static impeller 8 is arranged in the water-gas channel 13, and the static impeller 8 is arranged at one end of the water-gas channel 13, which is close to the front cover 12 facing the water, and plays a role in guiding the air flow of the mixed sewage.
In summary, the floor washing machine motor adopts the structure of the outer rotor, the outer rotor shell and the motor shaft are matched to form the accommodating cavity, the outer rotor, the stator and the rolling bearing are arranged in the accommodating cavity, and the outer rotor shell is in tight fit connection with the motor shaft, so that the water facing surface of the motor is ensured to be fixed and sealed; a water-gas channel is formed between the side wall of the outer rotor shell and the side wall of the motor shell, water and gas enter from the water inlet under the action of the movable impeller and pass through the water-gas channel to the water outlet, and in the process, the rest parts of the outer rotor, the stator and the rolling bearing are not contacted with water, so that the waterproof effect of the motor of the floor washing machine is ensured; meanwhile, a contact type sealing ring is not required, so that good waterproof performance is guaranteed, the waterproof performance is prevented from being reduced due to abrasion of the sealing ring, the influence of friction on power consumption is reduced, the limit rotating speed of a motor of the floor washing machine is increased, and the working requirement of the floor washing machine can be met.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A high water resistance low wear floor scrubber motor, comprising:
the motor shell is cylindrical and comprises a shell body and a water facing front cover, wherein the shell body comprises a back water surface opposite to the water facing front cover, and a water inlet is formed in the center of the water facing front cover;
the motor base is arranged in the center of the back surface, and the motor base and the shell are integrally formed;
the motor shaft is arranged on the axis of the motor shell and comprises a water facing end close to the water inlet and a fixed end opposite to the water facing end, and the fixed end is in clearance fit with the motor base;
the stator is arranged on the motor shaft, is rotationally connected with the motor shaft through at least two groups of rolling bearings and is fixedly connected with the motor base;
the outer rotor is arranged on the motor shaft and comprises an outer rotor shell arranged on the outermost layer of the outer rotor, the outer rotor shell and the motor shaft are matched to form a containing cavity, the stator and the rolling bearing are arranged in the containing cavity, the outer rotor shell is in tight fit connection with the water facing end, a water-gas channel is formed between the side wall of the outer rotor shell and the side wall of the motor shell, and a water outlet communicated with the water-gas channel is formed on the back surface;
the movable impeller is arranged on the motor shaft and is in close fit connection with the water facing end.
2. The high water resistance low wear floor washer motor of claim 1, wherein said outer rotor shell is rotatably connected to said motor base by auxiliary bearings.
3. A high water resistance low wear floor washer motor as in claim 2 wherein an elastomeric sleeve is provided between said outer rotor shell and said auxiliary bearing.
4. The high-waterproof low-abrasion floor washing machine motor according to claim 2, wherein the motor base is provided with an air inlet channel communicated with the accommodating cavity and the outside, an air exhaust channel is formed between the outer rotor shell and the back water surface, and the air exhaust channel is communicated with the auxiliary bearing and the water outlet.
5. The high waterproof low wear floor scrubber motor as set forth in claim 4, wherein the diameter of the air inlet channel and the air outlet channel is 3.0-5.0 mm.
6. The high water resistance low wear floor washer motor of claim 1, wherein a stationary impeller is disposed in the water gas channel, the stationary impeller being disposed in the water gas channel at an end adjacent the front water facing cover.
7. A high water resistance low wear floor scrubber motor as in claim 1, wherein the drain openings are provided with four drain openings equally spaced.
8. The high water resistance low wear floor washer motor of claim 1, wherein said movable impeller comprises a press cap in close-fitting connection with said water facing end, and a plurality of blades detachably connected with said press cap.
9. A high water resistance low wear floor scrubber motor as in claim 1, wherein the at least two sets of rolling bearings are disposed apart.
10. The high water resistance low wear floor washer motor of claim 1, wherein radially distributed strip-shaped corrugations are provided on the outer wall of the outer rotor shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320589097.9U CN219458808U (en) | 2023-03-23 | 2023-03-23 | High waterproof low wear's floor washing machine motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320589097.9U CN219458808U (en) | 2023-03-23 | 2023-03-23 | High waterproof low wear's floor washing machine motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219458808U true CN219458808U (en) | 2023-08-01 |
Family
ID=87411115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320589097.9U Active CN219458808U (en) | 2023-03-23 | 2023-03-23 | High waterproof low wear's floor washing machine motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219458808U (en) |
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2023
- 2023-03-23 CN CN202320589097.9U patent/CN219458808U/en active Active
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