Sealing structure for motor shaft of steam air fryer

Abstract

The utility model discloses a steam air fryer motor shaft sealing structure which comprises a motor, a heating cover and an installation support, the installation support is fixedly connected to the heating cover, and a first sealing piece is arranged in a first installation groove in the installation support. The outer ring part and the inner ring part are of an integrated structure, the wrinkle part enables the inner ring part to move relative to the outer ring part, the outer side wall of the outer ring part abuts against the side wall of the first installation groove, the lower end of a motor shaft of the motor penetrates through the installation support and the inner ring part and extends to the position below the heating cover, and the hole wall of the inner ring part is in sealing contact with the motor shaft. By the adoption of the technical scheme, the sealing effect can be achieved, and the failure rate of the air fryer is reduced; besides, when the motor shaft deviates to one side due to a certain deviation in motor installation, the inner ring part deviates to one side along with the motor shaft due to the existence of the wrinkle part, so that the hole wall of the inner ring part is always in sealing contact with the motor shaft, and the sealing effect is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field related to air fryers, and in particular to a motor shaft sealing structure for a steam air fryer. Background Art

[0002] The motor in the air fryer is generally installed on the volute through a mounting plate, and the volute is installed on the heating hood. The motor shaft of the motor passes through the through hole on the heating hood and is connected to the wind wheel. In order to avoid scratching and interference between the motor shaft and the heating hood due to assembly errors, a certain gap is set between the motor shaft and the through hole on the heating hood. Setting the gap will cause the oil smoke and steam in the cooking process of the air fryer to enter the electrical control area above the heating hood through the gap between the motor shaft and the heating hood, which may easily cause electrical failures and lead to a high failure rate of the air fryer. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of the utility model is to provide a steam air fryer motor shaft sealing structure to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0005] According to one aspect of the utility model, a steam air fryer motor shaft sealing structure is designed, comprising: a motor, a heating cover and a mounting bracket, wherein the mounting bracket is fixedly connected to the heating cover, a first sealing member with an elastic structure is arranged in a first mounting groove on the mounting bracket, the first sealing member comprises an outer ring portion, an inner ring portion and a pleated portion of an integral structure that enables the inner ring portion to move relative to the outer ring portion, an outer side wall of the outer ring portion abuts against a side wall of the first mounting groove, a lower end of a motor shaft of the motor passes through the mounting bracket and the inner ring portion and extends to below the heating cover, and a hole wall of the inner ring portion is in sealing contact with the motor shaft.

[0006] By adopting the above technical solution, a first sealing member in sealing contact with the motor shaft is arranged in the first mounting groove on the mounting bracket, so as to play a sealing role, prevent oil smoke and steam from entering the electrical control area above the heating hood through the gap between the motor shaft and the heating hood, and reduce the failure rate of the air fryer; in addition, when a certain deviation occurs in the installation of the motor and causes the motor shaft to deviate to one side, due to the existence of the folded part, the inner ring part will deviate to one side together with the motor shaft, thereby ensuring that the hole wall of the inner ring part is always in sealing contact with the motor shaft, thereby ensuring that the sealing effect is not affected.

[0007] In order to better solve the above technical defects, the utility model also has a better technical solution:

[0008] In some embodiments, a second sealing member in sealing contact with the heating hood is installed in the second mounting groove provided at the bottom of the mounting bracket, thereby preventing oil smoke and steam from entering the electrical control area above the heating hood through the gap between the mounting bracket and the heating hood, further improving the sealing performance.

[0009] In some embodiments, a main shaft sleeve is fixedly connected to the motor shaft, and the hole wall is in sealing contact with the main shaft sleeve.

[0010] In some embodiments, an annular protrusion is provided on the hole wall, the vertical width of the annular protrusion is smaller than the vertical width of the hole wall, and the annular protrusion is in sealing contact with the main shaft sleeve. The annular protrusion can reduce friction contact with the motor shaft, making the motor less likely to get stuck.

[0011] In some embodiments, the first sealing member is a circular structure made of silicone or silicone rubber, and the cross-section of the folded portion is V-shaped, N-shaped, or M-shaped.

[0012] In some embodiments, the second mounting groove is an annular groove, and the second sealing member is an annular sealing gasket.

[0013] In some embodiments, the motor is mounted on a volute via a mounting plate, the volute is mounted on the heating hood, and a first wind wheel connected to the motor shaft is disposed in the heating hood.

[0014] In some embodiments, a second wind wheel connected to the motor shaft is disposed in the volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a steam air fryer motor shaft sealing structure according to an embodiment of the utility model;

[0016] Figure 2 This is an exploded schematic diagram of the steam air fryer motor shaft sealing structure;

[0017] Figure 3 It is a cross-sectional schematic diagram of the steam air fryer motor shaft sealing structure;

[0018] Figure 4 A schematic diagram of the mounting bracket;

[0019] Figure 5 for Figure 3 A magnified schematic diagram of the middle A position;

[0020] Figure 6 is a cross-sectional schematic diagram of a first sealing member;

[0021] Reference numerals:

[0022] 1. Motor; 11. Motor shaft; 12. Main shaft sleeve; 2. Heating cover; 3. Mounting bracket; 31. First mounting groove; 32. Second mounting groove; 4. Mounting plate; 5. Volute; 6. First wind wheel; 7. Second wind wheel; 8. First sealing member; 81. Outer ring portion; 82. Inner ring portion; 821. Annular protrusion; 83. Pleated portion; 9. Second sealing member. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, and fixing should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] refer to Figures 1 to 6 As shown, the utility model provides a steam air fryer motor shaft sealing structure, comprising: a motor 1, a heating hood 2 and a mounting bracket 3, the motor 1 is fixedly connected to a mounting plate 4, the mounting plate 4 is fixedly connected to a volute 5, the volute 5 is fixedly connected to the heating hood 2, a first wind wheel 6 connected to a motor shaft 11 of the motor 1 is arranged in the heating hood 2, and a second wind wheel 7 connected to the motor shaft 11 of the motor 1 is arranged in the volute 5.

[0027] The mounting bracket 3 is fixedly connected to the heating cover 2. A first mounting groove 31 is provided at the bottom of the mounting bracket 3. The first mounting groove 31 is a circular groove, a quadrilateral groove, a pentagonal groove, or a hexagonal groove. In this embodiment, the first mounting groove 31 is preferably a circular groove. A first sealing member 8 with an elastic structure is provided in the first mounting groove 31. The first sealing member 8 is a circular structure, and its material is silicone or silicone rubber. The first sealing member 8 includes an outer ring portion 81 of an integral structure, an inner ring portion 82, and a pleated portion 83 that enables the inner ring portion 82 to move relative to the outer ring portion 81. The cross section of the pleated portion 83 is V-shaped. Or N-type or M-type, in this embodiment, the cross-section of the fold portion 83 is preferably N-shaped, the outer wall of the outer ring portion 81 abuts against the side wall of the first mounting groove 31, the lower end of the motor shaft 11 of the motor 1 passes through the through hole on the mounting bracket 3, the inner ring portion 82 and extends to the bottom of the heating cover 2, the hole wall of the inner ring portion 82 is in sealing contact with the motor shaft 11, further, the motor shaft 11 is fixedly connected with a main shaft sleeve 12, and the hole wall of the inner ring portion 82 is provided with an annular protrusion 821, the vertical width of the annular protrusion 821 is smaller than the vertical width of the hole wall, and the annular protrusion 821 is in sealing contact with the main shaft sleeve 12.

[0028] A second mounting groove 32 is provided at the bottom of the mounting bracket 3. The second mounting groove 32 is an annular groove. A second sealing member 9 in sealing contact with the heating cover 2 is installed in the second mounting groove 32. The second sealing member 9 is an annular sealing gasket made of silicone or silicone rubber or rubber.

[0029] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A steam air fryer motor shaft sealing structure, characterized in that: include: A motor, a heating hood and a mounting bracket, wherein the mounting bracket is fixedly connected to the heating hood, a first sealing member with an elastic structure is arranged in a first mounting groove on the mounting bracket, the first sealing member comprises an outer ring portion, an inner ring portion and a pleated portion of an integral structure that enables the inner ring portion to move relative to the outer ring portion, an outer side wall of the outer ring portion abuts against a side wall of the first mounting groove, a lower end of a motor shaft of the motor passes through the mounting bracket and the inner ring portion and extends to below the heating hood, and a hole wall of the inner ring portion is in sealing contact with the motor shaft.

2. A steam air fryer motor shaft sealing structure according to claim 1, characterized in that: A second sealing member in sealing contact with the heating cover is installed in a second installation groove arranged at the bottom of the installation bracket.

3. The steam air fryer motor shaft sealing structure according to claim 1, characterized in that: A main shaft sleeve is fixedly connected to the motor shaft, and the hole wall is in sealing contact with the main shaft sleeve.

4. A steam air fryer motor shaft sealing structure according to claim 3, characterized in that: An annular protrusion is arranged on the hole wall, the vertical width of the annular protrusion is smaller than the vertical width of the hole wall, and the annular protrusion is in sealing contact with the main shaft sleeve.

5. A steam air fryer motor shaft sealing structure according to any one of claims 1 to 4, characterized in that: The first sealing member is a circular structure made of silicone or silicone rubber, and the cross section of the folded portion is V-shaped, N-shaped or M-shaped.

6. The steam air fryer motor shaft sealing structure according to claim 2, characterized in that: The second mounting groove is an annular groove, and the second sealing member is an annular sealing gasket.

7. The steam air fryer motor shaft sealing structure according to claim 1, characterized in that: The motor is mounted on the volute through a mounting plate, the volute is mounted on the heating cover, and a first wind wheel connected to the motor shaft is arranged in the heating cover.

8. The steam air fryer motor shaft sealing structure according to claim 7, characterized in that: A second wind wheel connected to the motor shaft is arranged in the volute.

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