Oil-proof range hood motor

Abstract

The present invention discloses an oil-proof range hood motor, comprising a motor body and a rotating shaft connected to the motor body, a sealing component installed on one side of the motor body, the sealing component is sleeved on the rotating shaft and used to block oil smoke; the sealing component comprises a first cover, a second cover, an adsorption metal layer and a sponge ring, the second cover is installed on the outside of the first cover, the first cover is connected to the motor body, the adsorption metal layer is installed in the second cover and fits the rotating shaft and is used to adsorb oil stains, the sponge ring is also installed in the second cover and is used to adsorb oil stains. The present invention allows oil smoke to penetrate from between the rotating shaft and the second cover and enter the inner U-shaped opening of the sponge ring, thereby blocking the stains and oil stains in the oil smoke, which are adsorbed by the sponge ring and avoided as much as possible from entering the motor body.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to an oil-proof range hood motor. Background Art

[0002] Range hoods are an indispensable appliance in modern kitchens. During cooking, especially high-temperature cooking methods such as stir-frying, frying, and deep-frying, the oil in the ingredients will evaporate or splash due to the heat, forming a large amount of oil smoke. These oil fumes will not only make the kitchen greasy and difficult to clean, but more importantly, long-term inhalation is harmful to human health. With its powerful suction, range hoods can effectively suck in oil smoke and discharge it outdoors, reducing the concentration of oil smoke in the kitchen and protecting the respiratory health of the cook.

[0003] Among them, the grease particles in the oil fume have a certain degree of adhesion, and are easy to adhere and accumulate when they come into contact with a solid surface. Therefore, a relatively large amount of grease will remain on the range hood, and these greases are relatively difficult to handle. In addition, the working principle of the range hood is to operate the motor and drive the impeller to rotate at high speed. The rotation of the impeller will form a negative pressure zone around it, and this negative pressure zone is mainly located near the air inlet of the range hood. The function of this negative pressure zone is to quickly absorb the oil fume, odor and other gases generated in the kitchen into the range hood. Since the power is generated by the rotation of the motor shaft, and the motor is relatively close to the absorbed oil fume, to a certain extent, the oil fume will enter the motor through the gap, especially after a long time of use, the sealing parts will age, which makes it easier for the oil fume to enter the motor and damage the motor parts. In addition, the motor shaft needs to rotate, and if it can rotate, it cannot produce an absolute seal. There is a certain gap between the shaft and the motor, and the oil fume can easily enter the motor from the gap between the shaft and the motor. Summary of the invention

[0004] The object of the present invention is to provide a range hood motor that is greaseproof so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an oil-proof range hood motor, comprising a motor body and a rotating shaft connected to the motor body, a sealing component is installed on one side of the motor body, and the sealing component is sleeved on the rotating shaft to block oil smoke;

[0006] The sealing component includes a first cover, a second cover, an adsorption metal layer and a sponge ring. The second cover is installed on the outside of the first cover. The first cover is connected to the motor body. The adsorption metal layer is installed in the second cover and fits the rotating shaft. The sponge ring is also installed in the second cover. The adsorption metal layer and the sponge ring are both used to adsorb oil stains.

[0007] Furthermore, the first cover is provided in two halves, the two halves of the first cover are buckled on the outside of the motor body, the two halves of the first cover are provided with side fixing holes on the outside for fixing with the motor body, and the middle of the two halves of the first cover is provided with a sleeve 1 for the shaft to pass through.

[0008] Furthermore, the second cover is also arranged in two halves, the two halves of the second cover are fixed on the outside of the first cover, and a sleeve second for the shaft to pass through is opened in the middle position of the two halves of the second cover, and an adsorption metal layer that can fit each other is provided in the two halves of the second cover, and the inner sides of the two adsorption metal layers are arranged with inner arc edges that fit with the outer wall of the shaft, and the outer sides of the adsorption metal layers are in contact with the inner side of the second cover.

[0009] Furthermore, a limiting ring is fixed on the upper end of the adsorption metal layer, and a fastening bolt is inserted from top to bottom of the second cover, and the end of the fastening bolt is abutted in the limiting ring, so that the lower end of the adsorption metal layer abuts against the upper end of the first cover.

[0010] Furthermore, the lower end of the second cover and the lower end of the adsorption metal layer are respectively provided with an annular opening 1 and an annular opening 2, and sealing rings 1 and 2 are respectively adhered to the annular opening 1 and the annular opening 2, and the sealing rings 1 and 2 are respectively squeezed with the upper end of the first cover.

[0011] Furthermore, the outer side and inner side of the adsorption metal layer are respectively provided with an outer seam and an inner seam extending into the interior of the adsorption metal layer, the part inside the adsorption metal layer used to separate the outer seam and the inner seam is an intermediate layer, the limiting ring is located directly above the intermediate layer, and the outer seam and the inner seam are used for capillary action.

[0012] Furthermore, an upper cavity layer is provided between the adsorption metal layer and the second cover member, the sponge ring is arranged in the upper cavity layer, the sponge ring has a gap for opening and closing the sponge ring, a circumferentially distributed annular cavity is provided on the outer wall of the rotating shaft, the sponge ring is clamped in the annular cavity through the gap, the two side surfaces of the sponge ring are respectively in contact with the second cover member and the adsorption metal layer, an inner U-shaped opening extending outward is provided on the inner side of the sponge ring, the inner U-shaped opening is located on the outer side of the annular cavity, and is used to collect oil stains moving inward along the rotating shaft.

[0013] Furthermore, a U-shaped cavity is provided on the inner wall of the inner U-shaped opening, a U-shaped frame is embedded in the U-shaped cavity for supporting the inner U-shaped opening, and a vertically arranged longitudinal opening connected to the U-shaped cavity is also provided in the sponge ring, and a longitudinal rod fixed to the U-shaped frame is embedded in the longitudinal opening for supporting the sponge ring.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0015] 1. The oil smoke penetrates from between the rotating shaft and the second cover and enters the inner U-shaped opening of the sponge ring, blocking the stains and oil in the oil smoke and being adsorbed by the sponge ring, avoiding entering the inside of the motor body as much as possible.

[0016] 2. As the amount of oil absorbed by the sponge ring gradually increases, it moves into the second cover and the oil contacts the adsorption metal layer. The outer seam and the inner seam can absorb the excess oil, achieving a capillary effect and storing the oil to the greatest extent.

[0017] 3. Since the inner arc edge inside the adsorption metal layer contacts the outer wall of the shaft, the oil generated achieves a lubricating effect to avoid wear at the contact point between the inner arc edge and the shaft. The oil is adsorbed from the inner seam of the inner arc edge to prevent the oil from entering the inside of the motor body, and also produces a barrier effect to prevent oil smoke from moving inward. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the partial separation structure of the sealing component of the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the second cover member of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the second cover and the adsorption metal layer of the present invention;

[0023] Figure 5 is a schematic diagram of the side view structure of the second cover and the adsorption metal layer of the present invention;

[0024] Figure 6 This is a schematic diagram of the installation position structure of the sponge ring of the present invention;

[0025] Figure 7 It is a schematic diagram of the local structure of the sponge ring of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the sponge ring of the present invention.

[0027] In the figure: 1. motor body; 2. rotating shaft; 21. annular cavity; 3. sealing component; 31. first cover; 311. side fixing hole; 312. sleeve mouth one; 32. second cover; 321. sleeve mouth two; 322. upper cavity layer; 323. fastening bolt; 324. annular mouth one; 325. sealing ring one; 33. adsorption metal layer; 331. limiting ring; 332. inner arc edge; 333. annular mouth two; 334. sealing ring two; 335. outer seam mouth; 336. inner seam mouth; 337. middle layer; 34. sponge ring; 341. inner U-shaped mouth; 342. U-shaped cavity; 343. longitudinal mouth; 344. U-shaped frame; 345. longitudinal rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 8 , the present invention provides a technical solution: the range hood motor drives the impeller to rotate through electricity, generating a strong suction force, and quickly sucking the oil smoke, exhaust gas, etc. generated above the stove into the range hood. Under the action of the impeller driven by the motor, the inhaled oil smoke is filtered through the filter and centrifugal separation, and most of the oil pollution is intercepted, and the purified gas is discharged to the outside through the exhaust pipe, thereby keeping the kitchen air fresh. Due to the long-term accumulation of oil pollution and tiny particles in the oil smoke, they may penetrate through the poorly sealed rotating shaft 2 and enter the interior of the motor. After the oil pollution enters the motor, it will adhere to the internal parts of the motor, affecting the heat dissipation and normal operation of the motor, and then causing the motor performance to decline and the suction force to weaken. The long-term accumulation of oil pollution and particulate matter may also cause corrosion and wear to the bearings, coils and other components of the motor, thereby shortening the service life of the motor. If there is too much oil pollution inside the motor, it may also cause electrical faults, such as short circuit, leakage, etc., which bring safety hazards to home use. Based on this, an oil-proof range hood motor is proposed, such as Figure 1 And such as Figure 2 As shown, it includes a motor body 1 and a rotating shaft 2 connected to the motor body 1, a sealing component 3 is installed on one side of the motor body 1, and the sealing component 3 is sleeved on the rotating shaft 2 to block oil smoke;

[0030] The sealing component 3 includes a first cover 31, a second cover 32, an adsorption metal layer 33 and a sponge ring 34. The second cover 32 is installed on the outside of the first cover 31. The first cover 31 is connected to the motor body 1. The adsorption metal layer 33 is installed in the second cover 32 and fits the rotating shaft 2. The sponge ring 34 is also installed in the second cover 32. The adsorption metal layer 33 and the sponge ring 34 are both used to adsorb oil stains.

[0031] As the motor of the range hood is in an installed state, it is difficult to remove the motor. In order to facilitate the operation of the sealing component 3 during maintenance, the first cover 31 is arranged in two halves. The two halves of the first cover 31 are buckled on the outside of the motor body 1. Side fixing holes 311 are provided on the outside of the two halves of the first cover 31 for fixing to the motor body 1. A sleeve 312 for the shaft 2 to pass through is provided in the middle of the two halves of the first cover 31.

[0032] The second cover 32 is also provided in two halves. The two halves of the second cover 32 are fixed on the outside of the first cover 31. A sleeve 2 321 for the shaft 2 to pass through is provided in the middle of the two halves of the second cover 32. An adsorption metal layer 33 that can fit each other is provided in each of the two halves of the second cover 32. The inner sides of the two adsorption metal layers 33 are provided with inner arc edges 332 that fit with the outer wall of the shaft 2. The outer side of the adsorption metal layer 33 fits with the inner side of the second cover 32. The first cover 31 is fixed to the motor body 1 and is relatively integrated, so that the second cover 32 can be stably installed on the first cover 31. The outer wall of the first cover 31 is smooth, and the second cover 32 is fitted to ensure that the second cover 32 is relatively closed to prevent oil from seeping out.

[0033] like Figure 3 As shown, in order to fix the adsorption metal layer 33, a limiting ring 331 is fixed on the upper end of the adsorption metal layer 33, and a fastening bolt 323 is inserted from top to bottom into the second cover 32, and the end of the fastening bolt 323 is abutted against the limiting ring 331, so that the lower end of the adsorption metal layer 33 abuts against the upper end of the first cover 31, and the adsorption metal layer 33 is squeezed and fixed. During the rotation of the shaft 2, the adsorption metal layer 33 remains stationary.

[0034] like Figure 4 As shown, the lower end of the second cover 32 and the lower end of the adsorption metal layer 33 are respectively provided with an annular opening 1 324 and an annular opening 2 333, and the annular opening 1 324 and the annular opening 2 333 are respectively adhered with a sealing ring 1 325 and a sealing ring 2 334, and the sealing ring 1 325 and the sealing ring 2 334 are respectively squeezed with the upper end of the first cover 31 to prevent the oil in the second cover 32 from seeping out. It should also be noted that the contact position of the two halves of the second cover 32 is horizontally set, so that the oil enters into the second cover 32 of one plate to prevent the oil from seeping out from the gap between the two.

[0035] like Figure 4 As shown, the outer side and inner side of the adsorption metal layer 33 are respectively provided with an outer slit 335 and an inner slit 336 extending into the interior of the adsorption metal layer 33. The part inside the adsorption metal layer 33 used to separate the outer slit 335 and the inner slit 336 is an intermediate layer 337. The limiting ring 331 is located directly above the intermediate layer 337. The outer slit 335 and the inner slit 336 are used for capillary action. The outer slit 335 and the inner slit 336 adsorb and store the oil. In addition, when the inner arc edge 332 of the adsorption metal layer 33 is in contact with the shaft 2, the oil achieves a lubricating effect, allowing the shaft 2 to rotate smoothly. The oil can also adhere to the tiny gap between the inner arc edge 332 and the shaft 2, and remain motionless under the action of tension, thereby producing an isolation effect to prevent the oil smoke from moving further inward.

[0036] It should be noted that oil, as a liquid, has surface tension and fluidity. When the outer slit 335 and the inner slit 336 are small enough, this is one of the key conditions for the formation of capillary phenomenon. In a sufficiently small gap, the liquid will rise or extend along the gap due to the effect of surface tension. The capillary phenomenon will further promote the extension of the oil in the gap. In a sufficiently small gap, the oil will be subjected to an additional upward pressure caused by surface tension, and this pressure will push the oil to rise or extend along the gap.

[0037] like Figure 5 and Figure 6 As shown, an upper cavity layer 322 is provided between the adsorption metal layer 33 and the second cover 32, a sponge ring 34 is provided on the upper cavity layer 322, a slit is provided on the sponge ring 34 for opening and closing the sponge ring 34, a circumferentially distributed annular cavity 21 is provided on the outer wall of the rotating shaft 2, the sponge ring 34 is clamped in the annular cavity 21 through the slit, the two side surfaces of the sponge ring 34 are respectively in contact with the second cover 32 and the adsorption metal layer 33, an inner U-shaped opening 341 extending outward is provided on the inner side of the sponge ring 34, and the inner U-shaped opening 341 is located on the outer side of the annular cavity 21, and is used to pass the sponge ring 34 along the rotating shaft 2. The oil moving inward is collected and moves inside the second cover 32 of the oil tank, and needs to pass through the sponge ring 34. The sponge ring 34 achieves a filtering effect, filtering the dirt and oil in the smoke and adsorbing them in the sponge ring 34. In addition, the sponge ring 34 is located in the annular cavity 21, so that the contact area with the outer wall of the rotating shaft 2 is increased, and the bending degree is also increased to prevent the smoke from passing through the gap, so that the smoke is filtered. After the oil smoke is filtered, excessive oil will contact the adsorption metal layer 33 and be adsorbed into it to prevent the oil from seeping out.

[0038] like Figure 7As shown, a U-shaped cavity 342 is provided on the inner wall of the inner U-shaped opening 341, and a U-shaped frame 344 is embedded in the U-shaped cavity 342 for supporting the inner U-shaped opening 341. A vertical opening 343 connected to the U-shaped cavity 342 and arranged vertically is also provided in the sponge ring 34, and a longitudinal rod 345 fixed to the U-shaped frame 344 is embedded in the longitudinal opening 343 for supporting the sponge ring 34, wherein the U-shaped frame 344 and the longitudinal rod 345 are used to support the sponge ring 34 so that it is in an open state and maintained in the upper cavity layer 322.

[0039] The working principle of the present invention is as follows: the rotating shaft 2 rotates, driving the impeller to rotate, so that the oil smoke is absorbed. The oil in the oil smoke will adhere to the impeller and the rotating shaft 2, and then the oil smoke will enter the motor body 1 through the gap of the oil smoke absorption, especially the part connected to the rotating shaft 2, so that the parts in the motor body 1 are affected, resulting in damage to the motor body 1. Based on this, it is necessary to seal the rotating shaft 2 and the motor body 1 to prevent the oil smoke from entering the motor body 1.

[0040] The first cover 31 and the second cover 32 are in two halves, which is convenient for direct installation on the motor body 1 and for the second cover 32 to be installed on the first cover 31, so that the inside of the second cover 32 is relatively sealed. Even if the surface of the motor body 1 is concave and convex, it ensures that the second cover 32 can be installed. In addition, when the oil smoke moves, it penetrates from between the rotating shaft 2 and the second cover 32, and the oil smoke enters the inner U-shaped opening 341 of the sponge ring 34, and the oil stains therein are blocked in the sponge ring 34. At the same time, the stains and oil stains in the oil smoke are blocked to prevent them from moving inward, and they are also adsorbed by the sponge ring 34, so that the oil stains are blocked to the outside and prevented from entering the inside of the motor body 1 as much as possible.

[0041] Secondly, as the amount of oil absorbed by the sponge ring 34 gradually increases, it will move into the second cover 32 and the oil will come into contact with the adsorption metal layer 33. The outer seam 335 and the inner seam 336 of the adsorption metal layer 33 inside the second cover 32 can absorb the excess oil to achieve a capillary effect, thereby storing the oil to the greatest extent. The second cover 32 can be disassembled later to separate the two adsorption metal layers 33. The two adsorption metal layers 33 can be cleaned and can continue to be used, saving costs. At the same time, the sponge ring 34 can also be replaced to maintain the anti-oil effect.

[0042] After the adsorption metal layer 33 adsorbs the oil, the inner arc edge 332 on the inner side of the adsorption metal layer 33 contacts the outer wall of the rotating shaft 2, and the generated oil achieves a lubricating effect, thereby preventing wear of the contact position between the inner arc edge 332 and the rotating shaft 2. In addition, the oil moves along the rotating shaft 2 and can also be adsorbed from the inner seam 336 at the inner arc edge 332, thereby preventing the oil from entering the interior of the motor body 1. At the same time, the oil located between the inner seam 336 and the rotating shaft 2 also has a barrier effect, thereby preventing the oil smoke from moving inward.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oil-proof range hood motor, comprising a motor body (1) and a rotating shaft (2) connected to the motor body (1), characterized in that: A sealing component (3) is installed on one side of the motor body (1), and the sealing component (3) is sleeved on the rotating shaft (2) and is used to block oil smoke; The sealing component (3) comprises a first cover (31), a second cover (32), an adsorption metal layer (33) and a sponge ring (34); the second cover (32) is mounted on the outside of the first cover (31); the first cover (31) is connected to the motor body (1); the adsorption metal layer (33) is mounted in the second cover (32) and is in contact with the rotating shaft (2); the sponge ring (34) is also mounted in the second cover (32); the adsorption metal layer (33) and the sponge ring (34) are both used to adsorb oil stains; A limiting ring (331) is fixed at the upper end of the adsorption metal layer (33), and a fastening bolt (323) is inserted from top to bottom into the second cover member (32), and the end of the fastening bolt (323) is abutted in the limiting ring (331), so that the lower end of the adsorption metal layer (33) abuts against the upper end of the first cover member (31); An outer seam opening (335) and an inner seam opening (336) extending into the interior of the adsorption metal layer (33) are respectively provided on the outer side and the inner side of the adsorption metal layer (33); a portion of the interior of the adsorption metal layer (33) used to separate the outer seam opening (335) and the inner seam opening (336) is an intermediate layer (337); the limiting ring (331) is located directly above the intermediate layer (337); and the outer seam opening (335) and the inner seam opening (336) are used for capillary action.

2. The oil-proof range hood motor according to claim 1, characterized in that: The first cover member (31) is provided in two halves, the two halves of the first cover member (31) being buckled onto the outside of the motor body (1), the two halves of the first cover member (31) being provided with side fixing holes (311) on the outside for fixing to the motor body (1), and the middle of the two halves of the first cover member (31) being provided with a sleeve opening (312) for the rotation shaft (2) to pass through.

3. The oil-proof range hood motor according to claim 1, characterized in that: The second cover member (32) is also provided in two halves. The two halves of the second cover member (32) are fixed to the outside of the first cover member (31). A second sleeve (321) for the rotation shaft (2) to pass through is provided in the middle of the two halves of the second cover member (32). An adsorption metal layer (33) that can be bonded to each other is provided in each of the two halves of the second cover member (32). The inner sides of the two adsorption metal layers (33) are provided with inner arc-shaped edges (332) that are bonded to the outer wall of the rotation shaft (2). The outer sides of the adsorption metal layers (33) are bonded to the inner sides of the second cover member (32).

4. The oil-proof range hood motor according to claim 3, characterized in that: The lower end of the second cover member (32) and the lower end of the adsorption metal layer (33) are respectively provided with an annular opening 1 (324) and an annular opening 2 (333), and a sealing ring 1 (325) and a sealing ring 2 (334) are respectively adhered to the annular opening 1 (324) and the annular opening 2 (333), and the sealing ring 1 (325) and the sealing ring 2 (334) are respectively pressed against the upper end of the first cover member (31).

5. The oil-proof range hood motor according to claim 3, characterized in that: An upper cavity layer (322) is provided between the adsorption metal layer (33) and the second cover (32); the sponge ring (34) is arranged on the upper cavity layer (322); the sponge ring (34) has a slit for opening and closing the sponge ring (34); an annular cavity (21) distributed circumferentially is provided on the outer wall of the rotating shaft (2); the sponge ring (34) is clamped in the annular cavity (21) through the slit; two side surfaces of the sponge ring (34) are in contact with the second cover (32) and the adsorption metal layer (33) respectively; an inner U-shaped opening (341) extending outward is provided on the inner side of the sponge ring (34); the inner U-shaped opening (341) is located on the outer side of the annular cavity (21) and is used to collect oil stains moving inward along the rotating shaft (2).

6. The oil-proof range hood motor according to claim 5, characterized in that: A U-shaped cavity (342) is formed on the inner wall of the inner U-shaped opening (341), a U-shaped frame (344) for supporting the inner U-shaped opening (341) is embedded in the U-shaped cavity (342), a vertical opening (343) communicating with the U-shaped cavity (342) and arranged vertically is also formed in the sponge ring (34), and a longitudinal rod (345) fixed to the U-shaped frame (344) is embedded in the longitudinal opening (343) for supporting the sponge ring (34).

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