CN218071182U - Oil cooling device of large ceiling fan motor - Google Patents
Oil cooling device of large ceiling fan motor Download PDFInfo
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- CN218071182U CN218071182U CN202220853327.3U CN202220853327U CN218071182U CN 218071182 U CN218071182 U CN 218071182U CN 202220853327 U CN202220853327 U CN 202220853327U CN 218071182 U CN218071182 U CN 218071182U
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Abstract
The utility model discloses an oil cooling device of large-scale ceiling fan motor, including motor and the cold subassembly of oil, a plurality of oilholes have all been seted up to cyclic annular array on the front end housing of motor and the rear end cap, the cold subassembly of oil includes the oil pump, the cooler, first sump oil tank, the second sump oil tank, spout oil ring and a plurality of defeated oil pipe, first sump oil tank and second sump oil tank set up the outside at front end housing and rear end cap respectively, the both ends of a defeated oil pipe communicate with the input port and the first sump oil tank of oil pump respectively, the delivery outlet intercommunication of defeated oil pipe and oil pump is passed through to cooler one end, the cooler other end is through defeated oil pipe and second sump oil tank intercommunication, it sets up the inboard at the rear end cap to spout the oil ring, spout the oil ring and pass through a plurality of oilholes and second sump oil tank intercommunication, first sump oil tank passes through the inner chamber intercommunication of a plurality of oilholes and motor, be provided with a plurality of radiating fins on the cooler. The problems that the motor is easy to be heated too high when running at high speed, so that the insulation carbonization is caused, the insulation effect is lost, and the winding of the motor is short-circuited and breaks down are solved.
Description
Technical Field
The utility model relates to a ceiling fan motor cooling field specifically is a oil cooling device of large-scale ceiling fan motor.
Background
HVLS (high volume-Low speed) industrial energy-saving fan, a huge ceiling fan with diameter of 7.3 m! The air-conditioning system can most efficiently push a large amount of air to move and generate ultra-large air quantity, the rotating speed is only 50RPM, and a space forms a moving and circulating airflow field, which is incomparable with other equipment. A streamline fan blade (13) manufactured by applying an aerodynamic principle and an advanced process can drive a large amount of air only with 1.5KW or less power to generate an ultra-large area natural breeze system, and has double functions of ventilation and cooling. Compared with the traditional heating ventilation air conditioner and a small high-speed fan, the fan has incomparable application advantages and can be used as a perfect solution for ventilating and cooling in a large space.
When the large ceiling fan keeps running for a long time or at a high speed, the motor can generate a large amount of heat, if the heat cannot be dissipated in time, the insulation temperature of the motor winding is increased, the insulation has strong reaction to high temperature, the aging is accelerated, and the service life is shortened. If the temperature rises too high, the insulation can be carbonized, the insulation effect is lost, the winding of the motor can be short-circuited and fails, and although the fan drives airflow to circulate when in operation, the size and the structure of the fan motor are limited, and the heat dissipation effect is not ideal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a large-scale ceiling fan motor's oil cooling device, has solved the problem that mentions in the background art.
The purpose of the utility model is realized through the following technical scheme: an oil cooling device of a large ceiling fan motor comprises a motor and an oil cooling assembly, wherein the motor is vertically arranged downwards, and a front end cover and a rear end cover of the motor are both provided with a plurality of oil holes in an annular array;
the oil cooling assembly comprises an oil pump, a cooler, a first oil collecting tank, a second oil collecting tank, an oil spraying ring and a plurality of oil conveying pipes, wherein the first oil collecting tank and the second oil collecting tank are arranged on the outer sides of the front end cover and the rear end cover respectively, one ends of the oil conveying pipes are communicated with an input port and the first oil collecting tank of the oil pump respectively, one end of the cooler is communicated with an output port of the oil pump through the oil conveying pipes, the other end of the cooler is communicated with the second oil collecting tank through the oil conveying pipes, the oil spraying ring is arranged on the inner side of the rear end cover, the oil spraying ring is communicated with the second oil collecting tank through a plurality of oil holes, the first oil collecting tank is communicated with an inner cavity of the motor through a plurality of oil holes, and the cooler is provided with a plurality of radiating fins. The oil heated in the motor is pumped out and then is cooled by a cooler and the like, and the cooled oil is pumped to the tail end of the motor and directly contacts a heat source in the motor from top to bottom to conduct away heat, so that the temperature of the motor is reduced.
Furthermore, the oil spraying ring is circular, an annular groove is formed in one end of the oil spraying ring, a plurality of oil spraying ports are formed in the other end of the oil spraying ring and in the inner side wall and the outer side wall in a surrounding mode, a plurality of oil holes in the rear end cover are communicated with the groove in the oil spraying ring, and the oil spraying ports are communicated with the groove. The oil injection ring can preferentially spray and cool the part which is not gathered with cooling oil in the motor.
Furthermore, the cooler is tubular, the cooler is arranged vertically, the plurality of radiating fins are arranged on the outer wall of the cooler in a surrounding mode, and the plurality of radiating fins are arranged vertically. The contact area between the radiating fins and the air flow is the largest, so that when the air flow flows through the plurality of radiating fins, the air flow can carry away heat on the radiating fins, and the radiating fins are favorable for volatilizing the heat into the air.
Furthermore, a plurality of heat-conducting fins are arranged in the cavity of the cooler, and the heat-conducting fins are spirally arranged on the inner wall of the cooler in a surrounding manner. After the cooling oil is pumped into the cooler from the motor, the cooling oil rapidly advances in the cooler in a spiral mode, the moving path of the cooling oil is enlarged, and meanwhile the heat conducting fins can be in maximum contact with the cooling oil, and therefore heat of the cooling oil can be absorbed rapidly.
Further, still include the flabellum, be located be provided with the flabellum in the pivot on the motor rear end cap, the flabellum is located second sump oil tank top, the cover is equipped with the safety cover on the flabellum, the safety cover with the rear end cap is fixed. Further with the gas pump to the motor on, not only help the cooling of second sump tank, also can play the effect of supplementary cooling to motor housing and cooler simultaneously.
Furthermore, first sump oil tank is cyclic annular box, first sump oil tank with last the coaxial setting of front end cover, the second sump oil tank with the structure of first sump oil tank is the same, be provided with the coarse strainer in the first sump oil tank, be provided with the fine filter screen in the second sump oil tank. Avoid parts such as piece and impurity harm motor 1 and oil pump 4, can clear up fast when overhauing or.
Furthermore, the front end cover is provided with a connecting seat, the oil pump is arranged at the bottom of the connecting seat, a driving belt pulley is arranged on a rotating shaft sleeve on the front end cover of the motor, a driven belt pulley is arranged on an input shaft of the oil pump, and the driving belt pulley is in transmission connection with the driven belt pulley through a belt. The motor 1 drives the oil pump 4 to operate, so that cooling oil circulation is realized, and a driving component is not required to be additionally used for driving the oil pump.
Furthermore, an oil filling pipe is communicated with the second oil collecting tank, and one end, far away from the second oil collecting tank, of the oil filling pipe is in threaded connection with a first sealing cover;
an oil discharge pipe is communicated with the first oil collecting tank, and a second sealing cover is connected to one end, far away from the first oil collecting tank, of the oil discharge pipe in a threaded mode. Facilitating rapid addition and removal of cooling oil.
The utility model has the advantages that: the oil cooling device of the large ceiling fan motor comprises a motor and an oil cooling assembly, wherein the motor is vertically arranged downwards, and a plurality of oil holes are formed in the front end cover and the rear end cover of the motor in an annular array. The oil cooling assembly comprises an oil pump, a cooler, a first oil collecting tank, a second oil collecting tank, an oil spraying ring and a plurality of oil conveying pipes, wherein the cooler is provided with a plurality of radiating fins. The oil heated in the motor is pumped out, and then is cooled by a cooler and the like, and the cooled oil is pumped into the tail end of the motor and is in direct contact with a heat source inside the motor from top to bottom to further conduct away heat, so that the cooling of the motor is completed, the temperature rise is prevented from being too high, the insulation carbonization is carried out, the insulation effect is lost, and then the winding of the motor is short-circuited and breaks down, and the service life of the motor is influenced.
The cooling efficiency is improved by directly cooling the heat source through the oil, and the oil does not influence the magnetic circuit of the motor due to the characteristic that the oil is not locally magnetic and conductive, so that the oil is selected as a medium for directly cooling the inside.
The oil injection ring can preferentially spray and cool the part which is not gathered with cooling oil in the motor.
The air of big ceiling fan top removes the motor below, and then produces the air current, and the air current can flow through between a plurality of heat fins of cooler, and the vertical setting of radiating fin helps the air current to flow through from whole cooler outer wall, and the area of radiating fin and air current contact is also the biggest simultaneously, and then when a plurality of radiating fin were flowed through to the air current, can carry away the heat on the radiating fin, helps radiating fin to volatilize the heat to the air in.
After the cooling oil is pumped into the cooler from the motor, the cooling oil rapidly advances in the cooler in a spiral mode, the moving path of the cooling oil is enlarged, meanwhile, the heat conducting fins can be in maximum contact with the cooling oil, and therefore the heat of the cooling oil can be rapidly absorbed and transferred to the shell to be dissipated into the air through the heat radiating fins.
Drawings
FIG. 1 is a schematic view of an oil cooling device of a large ceiling fan motor according to the present invention;
FIG. 2 is a schematic view of the rear end cap of the oil cooling device of the large ceiling fan motor of the present invention;
FIG. 3 is a schematic view of an oil spraying ring of an oil cooling device of a large ceiling fan motor according to the present invention;
FIG. 4 is a cross-sectional view of the rear end cover of the oil cooling device of the large ceiling fan motor of the present invention;
FIG. 5 is a cross-sectional view of the front end cover of the oil cooling device of the large ceiling fan motor of the present invention;
FIG. 6 is a cross-sectional view of the oil cooler of the large ceiling fan motor of the present invention;
in the figure, 1, a motor, 2, a front end cover, 3, a rear end cover, 4, an oil pump, 5, a cooler, 6, a first oil collecting tank, 7, a second oil collecting tank, 8, an oil pipe, 9, an oil spraying ring, 10, a radiating fin, 11, a groove, 12, an oil spraying port, 13, a fan blade, 14, a protective cover, 15, a coarse filter screen, 16, a fine filter screen, 17, a connecting seat, 18, a driving belt pulley, 19, a driven belt pulley, 20, an oil filling pipe, 21, a first sealing cover, 22, an oil discharging pipe, 23, a second sealing cover, 24 and a heat conducting fin.
Detailed Description
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following descriptions, and the indicated directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "disposed" are to be interpreted broadly, and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the utility model discloses in provide only supply the reference with the model of electrical apparatus. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.
Referring to fig. 1 to 6, the present invention provides a technical solution: as shown in figure 1, the oil cooling device of a large-scale ceiling fan motor comprises a motor 1 and an oil cooling assembly, wherein the motor 1 is vertically arranged downwards, and a plurality of oil holes are formed in a front end cover 2 and a rear end cover 3 of the motor 1 in an annular array manner;
the oil cooling assembly comprises an oil pump 4, a cooler 5, a first oil collecting tank 6, a second oil collecting tank 7, an oil spraying ring 9 and a plurality of oil conveying pipes 8, the first oil collecting tank 6 and the second oil collecting tank 7 are arranged on the outer sides of a front end cover 2 and a rear end cover 3 respectively, two ends of one oil conveying pipe 8 are communicated with an input port of the oil pump 4 and the first oil collecting tank 6 respectively, one end of the cooler 5 is communicated with an output port of the oil pump 4 through the oil conveying pipe 8, the other end of the cooler 5 is communicated with the second oil collecting tank 7 through the oil conveying pipe 8, the oil spraying ring 9 is arranged on the inner side of the rear end cover 3, the oil spraying ring 9 is communicated with the second oil collecting tank 7 through a plurality of oil holes, the first oil collecting tank 6 is communicated with an inner cavity of a motor 1 through the plurality of oil holes, and the cooler 5 is provided with a plurality of radiating fins 10.
The air cooling or water cooling of the motor casing can satisfy most of the requirements, but the oil cooling technology is continuously used for developing new woolen cloth. This is because of two reasons: one of them is the drawback of the cooling of the cabinet. Because the cooling mode needs the heat source in the motor to be transmitted to the outside through the layer of material and then carried away by the water channel. Such as windings inside the motor coils. Because of the presence of thermal resistance, a temperature gradient exists from the windings to the water-cooled enclosure. The windings cannot be cooled directly, resulting in temperature build-up and formation of local hot spots. A direct cooling heat source is required to improve cooling efficiency. The oil itself has no influence on the magnetic circuit of the motor because of the characteristic of no magnetic and non-conductive local part, so the oil is selected as the medium for directly cooling the inside.
As shown in fig. 1-6, in the specific implementation, when the motor 1 is in the working process, the oil cooling device is driven to operate, because the motor 1 is arranged downwards, the cooling oil in the motor 1 is accumulated at the front end of the motor 1 under the action of gravity, so that the tail part of the motor 1 cannot be cooled well, and further the oil heated in the motor 1 needs to be continuously pumped out, and then is cooled by the cooler 5 and the like, and then the cooled oil is pumped into the tail end of the motor 1, and is in direct contact with the heat source in the motor 1 from top to bottom to further conduct away heat, so that the temperature of the motor is reduced, and the temperature is prevented from rising too high, so that the insulation carbonization is realized, the insulation effect is lost, and further the winding of the motor is short-circuited and breaks down, and the service life of the motor is influenced.
Spout oil ring 9 and be the ring form, spout oil ring 9 one end and seted up annular recess 11, all encircle on spouting the oil ring 9 other end and inside wall and the lateral wall and open and be equipped with a plurality of nozzle 12, a plurality of oilholes on the rear end cover 3 and spout groove 11 intercommunication on the oil ring 9, a plurality of nozzle 12 all communicate with groove 11.
In specific implementation, as shown in fig. 2 to 5, after cooled oil is pumped into the second oil collecting tank 7, the cooled oil is input into the groove 11 of the oil injection ring 9 through a plurality of oil holes, the oil injection ring 9 and the rear end cover 3 are fixed by bolts, and the groove 11 is sealed with the rear end cover 3, the cooling oil collected in the groove 11 is sprayed out from a plurality of oil injection ports 12 of the oil injection ring 9 through the oil pump 4, a part of the upper end of the motor 1, where cooling oil is not collected, is mainly cooled, oil sprayed out from a plurality of oil injection ports 12 on the inner side arm of the oil injection ring 9 is used for cooling components such as a rotating shaft of a motor rotor and a rotor winding, and the like, oil sprayed out from a plurality of oil injection ports 12 on the outer side wall of the oil injection ring 9 mainly cools components such as a tail end housing, a stator winding, and a rotor winding, and the whole motor 1, and the oil sprayed out from a plurality of oil injection ports 12 at the bottom end of the oil injection ring 9 are mainly sprayed out from the stator winding and the interior of the motor 1, and, so as to summarize, the oil injection ring 9 can preferentially spray cooling oil on the part, where cooling oil not collected in the motor 1.
As shown in fig. 1, in the specific implementation, because motor 1 is at the in-process of work, drive big ceiling fan and rotate, and then the air pump with big ceiling fan top that lasts is gone into the motor below, and then produce the air current, the steam gasification accelerates, reach the effect to the environmental cooling, in the in-process that the air moved down, can flow through between a plurality of heat dissipation fins 10 of cooler 5, heat dissipation fin 10 is vertical to be set up, help the air current to flow through from whole cooler 5 outer wall, the area that heat dissipation fin 10 and air current contact is also the biggest simultaneously, and then when the air current flows through a plurality of heat dissipation fins 10, can take away the heat on heat dissipation fin 10, help heat dissipation fin 10 to volatilize the heat to the air in.
The cavity of the cooler 5 is provided with a plurality of heat-conducting fins 24, and the plurality of heat-conducting fins 24 are spirally arranged on the inner wall of the cooler 5 in a surrounding manner.
In practice, as shown in fig. 6, after the cooling oil is pumped from the motor 1 into the cooler 5, the cooling oil rapidly advances spirally in the cooler 5, so as to increase the path of the cooling oil, and the heat-conducting fins 24 can maximally contact with the cooling oil, thereby helping to rapidly absorb the heat of the cooling oil and transmit the heat to the housing to be dissipated into the air by the heat-dissipating fins 10.
Still include flabellum 13, be located and be provided with flabellum 13 in the pivot on the motor 1 rear end cap 3, flabellum 13 is located second oil collecting tank 7 top, and the cover is equipped with safety cover 14 on the flabellum 13, and safety cover 14 is fixed with the rear end cap.
As shown in fig. 2, the fan blade 13 on the rear end cover 3 of the motor 1 further pumps air to the motor while the motor 1 rotates, which not only helps to cool the second oil collecting tank 7, but also helps to cool the housing of the motor 1 and the cooler 5.
The first oil collecting tank 6 is an annular tank body, the first oil collecting tank 6 is coaxially arranged with the upper front end cover 2, the second oil collecting tank 7 is the same as the first oil collecting tank 6 in structure, a coarse filter screen 15 is arranged in the first oil collecting tank 6, and a fine filter screen 16 is arranged in the second oil collecting tank 7.
As shown in fig. 4 and 5, certain debris is inevitably present in the motor 1 and other components, and the coolant may also carry impurities, and is screened out through the coarse filter screen 15 and the fine filter screen 16 respectively, so as to prevent the components such as the motor 1 and the oil pump 4 from being damaged, but the coolant is present in a small amount and is cleaned during maintenance or cleaning.
The front end cover 2 is provided with a connecting seat 17, the oil pump 4 is arranged at the bottom of the connecting seat 17, a driving belt pulley 18 is arranged on a rotating shaft sleeve on the front end cover 2 of the motor 1, a driven belt pulley 19 is arranged on an input shaft of the oil pump 4, and the driving belt pulley 18 is in transmission connection with the driven belt pulley 19 through a belt.
As shown in fig. 1, in specific implementation, the oil pump 4 is driven to operate by the motor 1, thereby cooling oil circulation is realized, and it is not necessary to additionally use a driving component to drive the oil pump, meanwhile, because the rotating speed of the fan motor is not high, and the rotating speed is not fixed, and the lowest rotating speed of the oil pump is higher than the lowest rotating speed of the fan motor, the diameter of the driving pulley 18 is larger than that of the driven pulley 19, so as to meet the rotating speed of the oil pump 4, and at the same time, the higher the rotating speed of the motor 1 is, the higher the rotating speed of the oil pump 4 is, so that oil circulation is accelerated, and even if the motor 1 rotates quickly, heat dissipation failure is not caused.
An oil filling pipe 20 is communicated with the second oil collecting tank 7, and one end of the oil filling pipe 20, which is far away from the second oil collecting tank 7, is in threaded connection with a first sealing cover 21;
an oil discharge pipe 22 is communicated with the first oil collecting tank 6, and a second sealing cover 23 is connected to one end, far away from the first oil collecting tank 6, of the oil discharge pipe 22 in a threaded mode.
As shown in fig. 1, 2, 4 and 5, in practice, when maintenance or replacement of cooling oil is required, oil can be filled into or drained from the motor 1 through the oil filling pipe 20 and the oil discharging pipe 22, respectively.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. The oil cooling device of the large ceiling fan motor is characterized by comprising a motor (1) and an oil cooling assembly, wherein the motor (1) is vertically arranged downwards, and a plurality of oil holes are formed in a front end cover (2) and a rear end cover (3) of the motor (1) in an annular array;
the oil cooling assembly comprises an oil pump (4), a cooler (5), a first oil collecting tank (6), a second oil collecting tank (7), an oil spraying ring (9) and a plurality of oil conveying pipes (8), wherein the first oil collecting tank (6) and the second oil collecting tank (7) are respectively arranged on the outer sides of the front end cover (2) and the rear end cover (3), one is arranged at two ends of each oil conveying pipe (8) and communicated with an input port and the first oil collecting tank (6) of the oil pump (4), one end of the cooler (5) is communicated with an output port of the oil pump (4) through the oil conveying pipes (8), the other end of the cooler (5) is communicated with the second oil collecting tank (7) through the oil conveying pipes (8), the oil spraying ring (9) is arranged on the inner side of the rear end cover (3), the oil spraying ring (9) is communicated with the second oil collecting tank (7) through a plurality of oil holes, and the first oil collecting tank (6) is communicated with an inner cavity of the motor (1) through a plurality of oil holes, and a plurality of heat dissipation fins (10) are arranged on the cooler (5).
2. The oil cooling device of a large ceiling fan motor as claimed in claim 1, wherein the oil spraying ring (9) is circular, one end of the oil spraying ring (9) is provided with a circular groove (11), the other end of the oil spraying ring (9) and the inner and outer side walls are all provided with a plurality of oil spraying ports (12) in a surrounding manner, a plurality of oil holes on the rear end cover (3) are communicated with the groove (11) on the oil spraying ring (9), and a plurality of oil spraying ports (12) are all communicated with the groove (11).
3. The oil cooling device for large ceiling fan motors as claimed in claim 1, wherein the cooler (5) is tubular, the cooler (5) is vertically arranged, a plurality of heat dissipating fins (10) are circumferentially arranged on the outer wall of the cooler (5), and a plurality of heat dissipating fins (10) are vertically arranged.
4. The oil cooling device of a large ceiling fan motor as claimed in claim 3, wherein the cavity of the cooler (5) is provided with a plurality of heat conducting fins (24), and the plurality of heat conducting fins (24) are spirally and circularly arranged on the inner wall of the cooler (5).
5. The oil cooling device of the large ceiling fan motor according to claim 1, further comprising a fan blade (13), wherein the fan blade (13) is arranged on a rotating shaft on the rear end cover (3) of the motor (1), the fan blade (13) is arranged above the second oil collecting tank (7), a protective cover (14) is sleeved on the fan blade (13), and the protective cover (14) is fixed with the rear end cover.
6. The oil cooling device for the large ceiling fan motor according to claim 1, wherein the first oil collecting tank (6) is an annular tank body, the first oil collecting tank (6) is coaxially arranged with the upper front end cover (2), the second oil collecting tank (7) has the same structure as the first oil collecting tank (6), a coarse filter screen (15) is arranged in the first oil collecting tank (6), and a fine filter screen (16) is arranged in the second oil collecting tank (7).
7. The oil cooling device for the large ceiling fan motor according to claim 5, wherein the front end cover (2) is provided with a connecting base (17), the oil pump (4) is arranged at the bottom of the connecting base (17), a driving pulley (18) is sleeved on a rotating shaft on the front end cover (2) of the motor (1), a driven pulley (19) is arranged on an input shaft of the oil pump (4), and the driving pulley (18) is in transmission connection with the driven pulley (19) through a belt.
8. The oil cooling device for the large ceiling fan motor according to claim 5, wherein an oil filling pipe (20) is communicated with the second oil collecting tank (7), and a first sealing cover (21) is connected to one end, away from the second oil collecting tank (7), of the oil filling pipe (20) in a threaded manner;
an oil discharge pipe (22) is communicated with the first oil collecting tank (6), and one end, far away from the first oil collecting tank (6), of the oil discharge pipe (22) is in threaded connection with a second sealing cover (23).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202220853327.3U CN218071182U (en) | 2022-04-13 | 2022-04-13 | Oil cooling device of large ceiling fan motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202220853327.3U CN218071182U (en) | 2022-04-13 | 2022-04-13 | Oil cooling device of large ceiling fan motor |
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CN218071182U true CN218071182U (en) | 2022-12-16 |
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CN202220853327.3U Active CN218071182U (en) | 2022-04-13 | 2022-04-13 | Oil cooling device of large ceiling fan motor |
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CN (1) | CN218071182U (en) |
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2022
- 2022-04-13 CN CN202220853327.3U patent/CN218071182U/en active Active
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Effective date of registration: 20230420 Address after: No. 1418, 14th Floor, Building 1, No. 1166, Tianfu 3rd Street, Hi-tech Zone, Chengdu, Sichuan, 610000 Patentee after: Accenture Mechanical Equipment (Chengdu) Co.,Ltd. Address before: 610000 No. D136, innovation center, No. 4, Xixin Avenue, high tech Zone, Wuhou District, Chengdu, Sichuan Province Patentee before: Dyson Technology Chengdu Co.,Ltd. |
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