CN218958675U - Improved hot air shaded pole motor for oven - Google Patents

Abstract

The utility model discloses an improved hot air shaded pole motor for an oven, which relates to the technical field of motor manufacturing and comprises a motor main body 11, a motor main shaft 9, a motor rotor 8, a motor main support 4, a motor main support pad 5 and a motor tail support 6; the motor main support 4 is composed of a motor main support leg 41 and a motor main support 42, the motor main support 42 is composed of a motor main support outer sleeve 422 and a motor main support inner cone 421, the motor main support legs 41 are uniformly distributed on the periphery of the motor main support 42, and the motor main support outer sleeve 422 and the motor main support inner cone 421 are both arranged at the front end of the motor main support 42; the motor main support outer sleeve 422 is also sleeved with a motor main support pad 5 for sealing. The heat-insulating and sealing device has the characteristics of high production efficiency, low cost, good heat-insulating and sealing performance, long service life and the like, and can be matched with an oven for use, and can be applied to other steaming and baking equipment.

Description

Improved hot air shaded pole motor for oven

Technical Field

The utility model relates to the technical field of motor manufacturing, in particular to an improved hot air shaded pole motor for an oven.

Background

In the prior art, a common oven shaded pole motor is complex in structure and complex in process, and mainly comprises a motor main body 11', a motor main shaft 9', a motor rotor 8', a motor main support 4' and a motor tail support 6', wherein the motor main support 4' is composed of more than three motor main support legs 4' -1, motor main support supports 4' -2 and motor main support funnel-shaped convex nozzles 4' -3, the motor main support legs 4' -1 are uniformly distributed on the periphery of the motor main support supports 4' -2, and the motor main support funnel-shaped convex nozzles 4' -3 are arranged at the front ends of the motor main support supports 4' -2; a motor main support pad 5 'for sealing is also sleeved on the motor main support funnel-shaped convex nozzle 4' -3 (see figure 1, patent publication number CN 215009935U). The patent has the characteristics of simple structure, high production efficiency, low cost, long service life and the like, but because the inner hole of the funnel-shaped convex nozzle 4' -3 of the main bracket of the motor is a conical hole with large front end and small rear end, the pressure of the rear end part of the main bracket of the motor is larger, so that water vapor permeates into the front end bearing 10' of the funnel-shaped convex nozzle 4' -3 of the main bracket of the motor from a gap of the main bracket of the motor and then drops into an oven of the whole machine.

The utility model discloses an "oven high temperature resistant shaded pole motor" of chinese patent (patent application No. 201920257656. X), which comprises a first heat insulating plate, first heat insulating plate both sides are equipped with mounting panel, second heat insulating plate respectively, the second heat insulating plate outside is equipped with a plurality of recesses that are parallel to each other, and the mounting panel outside is equipped with the motor, and the motor main shaft runs through mounting panel, first heat insulating plate, second heat insulating plate in proper order and extends the second heat insulating plate outside.

Another chinese patent (patent application No. 201921548139.4) discloses a multi-vane shaded pole motor, which comprises a shaded pole motor main body, wherein the outer side end of a motor rotor shaft is rotatably inserted into a corner box, the corner box is fixed on a reduction gear box, a bevel gear corner mechanism is arranged in the corner box, the side wall of the corner box is rotatably inserted into a side output shaft, the direction of the side output shaft is mutually perpendicular to the direction of a main output shaft, and a side vane is fixed at the outer side end of the side output shaft; according to the utility model, the single output shaft of the traditional shaded pole motor is changed into the double output shafts, the rotation directions of the output shafts are mutually perpendicular, output transmission in different directions can be realized, the function of partitioned blasting and heat dissipation can be realized by matching with a plurality of fan blades, the use efficiency of the shaded pole motor main body is greatly improved, the whole integrated assembly is smaller, the installation space is smaller, the installation components are saved, and the shaded pole motor is suitable for the interiors of various electric devices needing heat dissipation such as ovens.

The double-fan-blade shaded-pole motor device disclosed in China patent (patent application No. 201520078979.4) is arranged in an air thermal circulation fryer and comprises a shaded-pole motor, a heat dissipation fan blade and a heat conduction fan blade, wherein the heat dissipation fan blade and the heat conduction fan blade are sequentially arranged along the extending direction of an output shaft of the shaded-pole motor, the shaded-pole motor is arranged outside the air thermal circulation fryer, and the heat dissipation fan blade and the heat conduction fan blade are respectively arranged in the outer layer space and the inner layer space of the air thermal circulation fryer; the direction of the fan blade of the heat-conducting fan blade is upward, and the direction of the fan blade of the heat-conducting fan blade is downward.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the motor for the oven, which has high production efficiency, good heat insulation and sealing performance and long service life.

In order to solve the technical problems, the technical scheme adopted by the utility model is to design an improved hot air shaded pole motor for an oven: the motor comprises a motor main body 11, a motor main shaft 9, a motor rotor 8, a motor main bracket 4, a motor main bracket pad 5 and a motor tail bracket 6, wherein the motor main bracket 4 and the motor tail bracket 6 are respectively arranged at the front end and the tail end of the motor main body 11, and the motor rotor 8 is arranged in the motor main body 11; after the motor main shaft 9 passes through two ends of the motor rotor 8, the tail end of the motor main shaft is arranged in the motor tail bracket 6 in a penetrating way, and the front end of the motor main shaft passes through the motor main bracket 4; the motor main support 4 is composed of more than three motor main support legs 41 and motor main support seats 42, the motor main support seats 42 are composed of a cylindrical motor main support outer sleeve 422 and conical motor main support inner cone 421 arranged in the motor main support outer sleeve 422, the motor main support legs 41 are uniformly distributed on the periphery of the motor main support seats 42, and the motor main support outer sleeve 422 and the motor main support inner cone 421 are arranged at the front end of the motor main support seats 42; the motor main support outer sleeve 422 is also sleeved with a motor main support pad 5 for sealing.

The front end of the front end bearing 10 of the axial center of the motor main support inner cone 421 is also provided with a conical motor main support inner cone through hole 12 with small front end and large rear end.

The motor main support pad 5 is a reverse-rear-end inverted-U-shaped revolving body and consists of a motor main support pad end 51 at the rear end, a motor main support pad bottom 52 at the front end and a motor main support pad inner cone 53 in the middle; the center of the axis of the motor main support cushion inner cone 53 is provided with a motor main support cushion inner cone through hole 13 with smaller front end aperture and larger rear end aperture.

The front end of the motor main support pad bottom 52 is respectively provided with a motor main support pad bottom outer convex ring 521 and a motor main support pad bottom inner convex ring 523, and a motor main support pad bottom sealing ring groove 522 is formed between the motor main support pad bottom outer convex ring 521 and the motor main support pad bottom inner convex ring 523.

The rear end face of the motor main support pad bottom end 52 forms a deformed sealing step surface 524 that contacts the front end face of the motor main support outer sleeve 422.

The outer cylindrical surface of the motor main support pad end 51 is also provided with a motor main support pad end convex ring 511.

The motor main support pad 5 is made of fluororubber.

The front end part of the motor main shaft 9 is also provided with a stirring fan blade 3.

According to the improved hot air shaded pole motor for the oven, the structure of the main support pad of the motor is improved, on one hand, two contact sealing rings and one cavity sealing ring are formed between the main support pad of the motor and the heat insulation plate through contact deformation, so that the heat insulation tightness between the main support pad and the heat insulation plate is greatly improved; on the other hand, the inner cone of the motor main support pad is set to be small at the front end and large at the rear end, and the inner hole of the inner cone is also set to be small at the front end and large at the rear end, so that when the pressure of the inner cavity of the inner cone is overlarge, the inner cone deforms towards the direction of the central axis, the gap between the inner cone and the motor main shaft can be reduced, the air pressure of the rear end cavity cannot be too large, and the inner hole of the inner cone of the motor main support pad is also set to be small at the front end and large at the rear end, so that the pressure of the inner hole of the inner cone of the motor main support can be further reduced, and water vapor can be effectively prevented from seeping out from the gap of the main support (namely, seeping into the motor through the front end bearing), and the heat insulation sealing property between the inner cone and the inner cone is further improved; on the other hand, the front end face of the outer sleeve of the main motor support is contacted with the rear end face of the bottom end of the main motor support pad, so that a deformed sealing step face is formed, and the heat insulation sealing performance of the motor support is improved again. Thus, the service life of the product is further prolonged. In addition, the convex ring of the motor main support pad end arranged on the outer cylindrical surface of the motor main support pad end is in deformation fit with the inner wall of the outer sleeve of the motor main support, so that friction force is increased, and the motor main support pad can be prevented from falling off when a motor finished product is produced, and the assembly efficiency of the whole machine is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art oven motor in principal section;

FIG. 2 is a schematic diagram of a principal cross-section of the present utility model;

FIG. 3 is an enlarged schematic view of a portion K of the present utility model;

FIG. 4 is a schematic illustration of the closure principle of the present utility model;

fig. 5 is a schematic view of a main section of a motor main frame pad of the present utility model.

In the figure:

1'-11' are parts of existing ovens and oven motors, wherein:

1' is the main oven space of the existing oven, 2' is the heat insulation board of the existing oven, 3' is the stirring blade of the existing oven motor, 4' is the motor main support of the existing oven motor, 5' is the motor main support pad of the existing oven motor, 6' is the motor tail support of the existing oven motor, 7' is the tail end bearing of the existing oven motor, 8' is the motor rotor of the existing oven motor, 9' is the motor main shaft of the existing oven motor, 10' is the front end bearing of the existing oven motor, 11' is the motor main body of the existing oven motor;

1-11 are parts of the oven and oven motor of the utility model, wherein:

1 is a main box space, 2 is a heat insulation plate, 3 is a stirring fan blade, 4 is a motor main support, 41 is a motor main support leg, 42 is a motor main support, 421 is a motor main support inner cone, 422 is a motor main support outer sleeve, 5 is a motor main support pad, 51 is a motor main support pad end, 511 is a motor main support pad end convex ring, 52 is a motor main support pad bottom end, 521 is a motor main support pad bottom end outer convex ring, 522 is a motor main support pad bottom end sealing ring groove, 523 is a motor main support pad bottom end inner convex ring, 524 is a deformation sealing step surface, 53 is a motor main support pad inner cone, 6 is a motor tail support, 7 is a tail end bearing, 8 is a motor rotor, 9 is a motor main shaft, 10 is a front end bearing, 11 is a motor main support inner cone through hole, 13 is a motor main support pad inner cone through hole.

Detailed Description

The utility model is further described below with reference to the drawings and examples. The following description is by way of example, and the scope of the utility model is not limited thereto. In the following description, the left side is the front end, and the right side is the rear or rear end or rear portion (see fig. 1-5 for details).

The improved hot air shaded pole motor for the oven of the embodiment is composed of a motor main body 11, a motor main shaft 9, a motor rotor 8, a motor main bracket 4, a motor tail bracket 6, stirring blades 3 and a motor main bracket pad 5, wherein a tail end bearing 7 (oil bearing) is arranged in the motor tail bracket 6.

The motor main support 4 is composed of three (four or five or other numbers, three in this example) motor main support legs 41 and motor main support supports 42, the motor main support legs 41 (used for supporting the motor main body 11 and the whole machine installation) are uniformly distributed on the periphery of the motor main support supports 42, and a front end bearing 10 (oil bearing) is installed in a conical hole at the middle rear end of the motor main support supports 42; the motor main support 42 is composed of a cylindrical motor main support outer sleeve 422 and a conical motor main support inner cone 421 arranged in the motor main support outer sleeve 422, the front end of the front end bearing 10 of the axis center of the motor main support inner cone 421 is also provided with a conical motor main support inner cone through hole 12 with small front end and large rear end, and an inner ring groove is arranged on the inner wall of the cylindrical motor main support outer sleeve 422.

The motor main support pad 5 is made of fluororubber, is a reverse-U-shaped revolving body, and consists of a motor main support pad end 51 at the rear end, a motor main support pad bottom end 52 at the front end and a motor main support pad inner cone 53 in the middle. A motor main support pad end convex ring 511 is arranged on the outer cylindrical surface of the motor main support pad end 51 and is matched with the inner wall of the motor main support outer sleeve 422; the front end of the motor main support pad bottom 52 is respectively provided with a motor main support pad bottom outer convex ring 521 and a motor main support pad bottom inner convex ring 523, and a motor main support pad bottom sealing ring groove 522 is formed between the motor main support pad bottom outer convex ring 521 and the motor main support pad bottom inner convex ring 523; after the rear end surface of the bottom end 52 of the motor main support pad contacts the front end surface of the motor main support outer sleeve 422, a deformed sealing step surface 524 is formed; the motor main support cushion inner cone 53 is in a cone shape with small front end and large rear end, and the axial center of the motor main support cushion inner cone 53 is provided with a motor main support cushion inner cone through hole 13 with smaller front end aperture and larger rear end aperture.

During installation, a through hole (the aperture of the through hole is smaller than the inner hole of the motor main support pad 5 and larger than the outer diameter of the motor main shaft 9) is firstly machined in the heat insulation plate 2, and 3 threaded holes matched and fixed with the motor main support legs 41 are uniformly distributed at the outer circle; then, the rear end of the motor main support pad 5 is inserted into the inner hole of the motor main support outer sleeve 422; thereafter, the front end of the motor main shaft 9 is inserted forward through the through hole of the heat insulation board 2, the through hole of the motor main support leg 41 is aligned with the threaded hole of the heat insulation board 2, the motor main support leg 41 is fixed on the heat insulation board 2 by using a screw, and the motor main support pad 5 is made of flexible material, at this time, after the front end of the motor main support pad bottom 52 of the motor main support pad 5 is in contact compression deformation with the heat insulation board 2, two contact sealing rings are formed (namely, after the deformation of the motor main support pad bottom outer convex ring 521 and the motor main support pad bottom inner convex ring 523, the contact area is increased), and at the same time, a cavity sealing ring is formed between the two contact sealing rings (namely, after the deformation of the motor main support pad bottom sealing ring groove 522, the ring groove cavity is reduced). Meanwhile, after the front end face of the outer sleeve 422 of the main motor support on the main motor support 42 contacts with the rear end face of the bottom end 52 of the main motor support pad to be compressed and deformed, a deformed sealing step surface 524 is formed, which is beneficial to heat insulation sealing. Thereafter, the stirrer blade 3 is attached to the front end portion of the motor spindle 9 protruding in the main tank space 1.

When the air conditioner is used, the motor main body 11 is electrified, the motor rotor 8 is started to drive the motor main shaft 9 to rotate, and then the stirring fan blade 3 arranged in the main box space 1 and at the front end part of the motor main shaft 9 is driven to rotate, so that air in the main box space 1 is stirred, and the air in the main box space 1 is heated uniformly.

In the use process, when the oven generates water vapor, the air pressure of the cavity is increased, the front end of the inner cone 53 of the motor main support pad of the main support pad 5 is pressed to be deformed, so that the clearance between the inner cone and the motor main shaft 9 is reduced, and most of the water vapor is prevented from exuding to the rear part and is thrown back into the interior of the oven under the centrifugal force of shaft rotation (namely, the inner cone is arranged in the main box space 1); the remaining small part of water vapor enters into the cavity formed by the main support pad 5, the main support outer sleeve 422 and the main support inner cone 421 through the main support pad inner cone through hole 13, on one hand, most of the water vapor is turned back, on the other hand, because the front end of the main support inner cone 421 is small and the rear end is large, the water vapor is prevented from entering again, only the small part of the water vapor enters into the rear end through the main support inner cone through hole 12, and finally, the front end bearing 10 is completely blocked, so that the water vapor is prevented from entering the interior of the main motor body 11, and meanwhile, water drops generated by water vapor condensation during the period are thrown into the oven through shaft rotation (see fig. 4 in detail).

The improved hot air shaded pole motor for the oven can be matched with the oven for use and can be applied to other baking equipment.

Claims (8)

1. The utility model provides an improved generation hot air shaded pole motor that oven was used, includes motor main part (11), motor main shaft (9), motor rotor (8), motor main support (4), motor main support pad (5) and motor tail support (6), motor main support (4) and motor tail support (6) are installed respectively at the front end and the tail end of motor main part (11), motor rotor (8) are installed in motor main part (11); after the motor main shaft (9) passes through the two ends of the motor rotor (8), the tail end of the motor main shaft is arranged in the motor tail bracket (6) in a penetrating way, and the front end of the motor main shaft passes through the motor main bracket (4); the method is characterized in that: the motor main support (4) is composed of more than three motor main support supporting legs (41) and motor main support supports (42), the motor main support supports (42) are composed of a cylindrical motor main support outer sleeve (422) and conical motor main support inner cone (421) arranged in the motor main support outer sleeve (422), the motor main support supporting legs (41) are uniformly distributed on the periphery of the motor main support supports (42), and the motor main support outer sleeve (422) and the motor main support inner cone (421) are both arranged at the front end of the motor main support supports (42); a motor main support pad (5) for sealing is also sleeved in the motor main support outer sleeve (422).

2. The improved hot air shaded pole motor for an oven according to claim 1, wherein: the front end of the front end bearing (10) at the center of the axis of the motor main support inner cone (421) is also provided with a conical motor main support inner cone through hole (12) with small front end and large rear end.

3. The improved hot air shaded pole motor for an oven according to claim 2, wherein: the motor main support pad (5) is a reverse-rear-end inverted-U-shaped revolving body, and consists of a motor main support pad end (51) at the rear end, a motor main support pad bottom end (52) at the front end and a motor main support pad inner cone (53) in the middle; the axial center of the motor main support cushion inner cone (53) is provided with a motor main support cushion inner cone through hole (13) with smaller front end aperture and larger rear end aperture.

4. An improved hot air shaded pole motor for an oven according to claim 3, wherein: the front end of the motor main support pad bottom (52) is respectively provided with a motor main support pad bottom outer convex ring (521) and a motor main support pad bottom inner convex ring (523), and a motor main support pad bottom sealing ring groove (522) is formed between the motor main support pad bottom outer convex ring (521) and the motor main support pad bottom inner convex ring (523).

5. The improved hot air shaded pole motor for an oven according to claim 4, wherein: the rear end surface of the bottom end (52) of the motor main support pad forms a deformation sealing step surface (524) which is contacted with the front end surface of the outer sleeve (422) of the motor main support.

6. The improved hot air shaded pole motor for an oven according to claim 5, wherein: and a motor main support pad end convex ring (511) is also arranged on the outer cylindrical surface of the motor main support pad end (51).

7. The improved hot air shaded pole motor for an oven according to claim 5, wherein: the motor main support pad (5) is made of fluororubber.

8. The improved hot air shaded pole motor for an oven according to claim 7, wherein: the front end part of the motor main shaft (9) is also provided with a stirring fan blade (3).

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