Oil-stain-resistant motor for kitchen ware
By designing a fixed sleeve and a rotating sleeve in the range hood motor, and utilizing structures such as an inclined conical surface and an oil drain groove, the problem of oil leakage from the motor shaft is solved, and the motor is protected.
Patent Information
- Application Number
- CN202520318137.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-25
AI Technical Summary
The existing range hood motor shaft lacks effective protection, allowing water, oil, and their mixtures to seep into the motor and cause damage.
Design an oil-proof motor including a motor spindle, motor housing, fixed sleeve and rotating sleeve. By setting an inclined conical surface, an annular baffle, an oil drain groove and an inner oil retaining ring, the oil is blocked and guided to be discharged outside the motor.
It effectively prevents oil from entering the motor, avoids motor damage, and improves the motor's protective performance.
Smart Images
Figure CN223771853U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of motor technology, specifically relating to an oil-proof motor for kitchen utensils. Background Technology
[0002] The motor of a range hood fan is installed inside the hood, and its working environment is filled with sticky, dripping, highly penetrating, and ubiquitous hot water vapor, oil fumes, and their mixtures. This working environment places higher demands on the motor's protection. Currently, there is no effective protection for the motor shaft of a range hood. Water, oil, and their mixtures slowly seep into the motor along the surface of the motor casing and the motor shaft, causing damage to the motor. Summary of the Invention
[0003] The present invention aims to solve the technical problems existing in the prior art and provide an oil-proof motor for kitchen utensils.
[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: an oil-proof motor for kitchen utensils, including a motor spindle, a motor housing, a fixed sleeve and a rotating sleeve. The motor spindle is disposed in the motor housing and is coaxially arranged. The motor housing includes an outwardly arranged end cover mounting position. The fixed sleeve is fitted on the end cover mounting position. The rotating sleeve is fitted on the motor spindle and is also fitted outside the fixed sleeve.
[0005] Preferably, the outer ring of the fixing sleeve is an inclined conical surface that is smaller at the front and larger at the back, and an annular baffle is provided at the rear end of the inclined conical surface. An annular oil-blocking groove is provided on the inclined conical surface. Multiple oil draining grooves are arranged in annular array along the axis on the inclined conical surface between the annular oil-blocking groove and the annular baffle. The front end of the oil draining groove is located on the inclined conical surface, and the rear end of the oil draining groove is opened on the rear end surface of the fixing sleeve. The front end of the oil draining groove is higher than the rear end.
[0006] Preferably, the front end of the rotating sleeve is fixedly sleeved on the motor spindle, and the rear end is sleeved on the fixed sleeve. The rotating sleeve includes an outer conical surface and an inner conical surface. Both the outer conical surface and the inner conical surface are lower at the front and higher at the rear. An inner oil baffle ring is provided on the inner conical surface, and the inner oil baffle ring is placed in an annular oil baffle groove.
[0007] Preferably, the rear end of the rotating sleeve is positioned in front of the annular baffle, and its diameter is smaller than that of the annular baffle.
[0008] The beneficial effects of this utility model are as follows: By setting a fixed sleeve and a rotating sleeve, the outer conical surface of the rotating sleeve can block the inflowing oil, thereby effectively preventing oil from entering the motor and causing damage to the motor; by setting an oil drain groove, an annular oil baffle groove and an inner oil baffle ring, the oil flowing between the rotating sleeve and the fixed sleeve can be further blocked, and the oil drain groove can guide it to the motor housing for discharge, further blocking the oil and preventing the rotating motor spindle from throwing the oil into the motor and causing damage to the motor. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic diagram of one structure of the fixing sleeve of this utility model;
[0011] Figure 3 yes Figure 1 Enlarged schematic diagram of part A in the middle.
[0012] In the diagram: 1. Motor spindle; 2. Motor housing; 3. Fixed sleeve; 4. Rotating sleeve; 5. End cover mounting position; 6. Inclined conical surface; 7. Annular baffle; 8. Annular oil baffle groove; 9. Oil drain groove; 10. Outer conical surface; 11. Inner conical surface; 12. Inner oil baffle ring. Detailed Implementation
[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0014] Example: An oil-resistant motor for kitchen utensils, such as... Figures 1-3 As shown, it includes a motor spindle 1, a motor housing 2, a fixed sleeve 3, and a rotating sleeve 4. The motor spindle 1 is located in the motor housing 2 and is coaxially arranged. The motor housing 2 includes an outwardly facing end cover mounting position 5. The fixed sleeve 3 is fitted onto the end cover mounting position 5, and the rotating sleeve 4 is fitted onto the motor spindle 1. At the same time, the rotating sleeve 4 is fitted onto the outside of the fixed sleeve 3.
[0015] The outer ring of the fixed sleeve 3 is an inclined conical surface 6 with a smaller front and a larger rear. The rear end of the inclined conical surface 6 is provided with an annular baffle 7. An annular oil-blocking groove 8 is provided on the inclined conical surface 6. Multiple oil draining grooves 9 are arranged in annular array along the axis on the inclined conical surface 6 between the annular oil-blocking groove 8 and the annular baffle 7. The front end of the oil draining groove 9 is located on the inclined conical surface 6, and the rear end of the oil draining groove 9 is opened on the rear end face of the fixed sleeve 3. The front end of the oil draining groove 9 is higher than the rear end.
[0016] The front end of the rotating sleeve 4 is fixed on the motor spindle 1, and the rear end is fitted on the fixed sleeve 3. The rotating sleeve 4 includes an outer conical surface 10 and an inner conical surface 11. Both the outer conical surface 10 and the inner conical surface 11 are lower in the front and higher in the back. An inner oil baffle ring 12 is provided on the inner conical surface 11, and the inner oil baffle ring 12 is placed in the annular oil baffle groove 8.
[0017] The rear end of the rotating sleeve 4 is positioned in front of the annular baffle 7, and its diameter is smaller than that of the annular baffle 7.
[0018] The principle of this utility model is as follows: When the oil-water mixture comes into contact with the rotating sleeve 4, the oil-water mixture is guided to drip directly out by the conical surface 10, which is lower in the front and higher in the back. When a small amount of oil-water falls into the gap between the two, most of the oil-water will be captured by the oil drain groove 9 and guided to drip out onto the motor housing 2. There is still a very small chance that oil-water will enter the interior. The annular oil baffle groove 8 and the inner oil baffle ring 12 can be used to block the oil-water from entering again. The blocked oil-water will flow down the annular oil baffle groove 8 to the bottom and flow out and be fixed between the rotating sleeves 4.
[0019] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.
Claims
1. An oil-proof motor for kitchen utensils, comprising a motor spindle (1), a motor housing (2), a stationary sleeve (3) and a rotating sleeve (4), characterized in that: The motor spindle (1) is arranged in the motor housing (2) and coaxially, the motor housing (2) comprises an outwardly arranged end cover mounting position (5), the fixed sleeve (3) is sleeved on the end cover mounting position (5), the rotating sleeve (4) is sleeved on the motor spindle (1), and the rotating sleeve (4) is sleeved on the outside of the fixed sleeve (3).
2. The oil-proof motor for kitchen utensils according to claim 1, characterized in that: The outer ring surface of the fixed sleeve (3) is an inclined taper surface (6) with a small front and a large back, the rear end of the inclined taper surface (6) is provided with an annular baffle (7), an annular oil retaining groove (8) is arranged on the inclined taper surface (6), a plurality of oil discharge grooves (9) are arranged in an annular array along the axis on the inclined taper surface (6) between the annular oil retaining groove (8) and the annular baffle (7), the front end of the oil discharge groove (9) is located on the inclined taper surface (6), the rear end of the oil discharge groove (9) is opened on the rear end surface of the fixed sleeve (3), and the front end of the oil discharge groove (9) is higher than the rear end.
3. The oil-proof motor for kitchen utensils according to claim 1, characterized in that: The front end of the rotating sleeve (4) is fixed on the motor spindle (1), and the rear end is sleeved on the fixed sleeve (3), the rotating sleeve (4) comprises an outer taper surface (10) and an inner taper surface (11), the outer taper surface (10) and the inner taper surface (11) are both low in front and high in back, an inner oil retaining ring (12) is arranged on the inner taper surface (11), and the inner oil retaining ring (12) is arranged in the annular oil retaining groove (8).
4. The oil-proof motor for kitchen utensils according to claim 1, characterized in that: The rear end of the rotating sleeve (4) is arranged on the front side of the annular baffle (7), and the diameter is smaller than that of the annular baffle (7).