CN107294262B

CN107294262B - Electric machine

Info

Publication number: CN107294262B
Application number: CN201710600005.1A
Authority: CN
Inventors: 周虎
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2017-07-21
Filing date: 2017-07-21
Publication date: 2020-02-28
Anticipated expiration: 2037-07-21
Also published as: CN107294262A

Abstract

The invention discloses a motor, which comprises a shell, a stator, a sealing device, a detection device and a control device, wherein the shell is provided with a plurality of heat dissipation holes, the stator comprises a stator core and a coil winding wound on the stator core, the sealing device comprises a driving assembly and a plurality of sealing elements, the driving assembly is respectively connected with the plurality of sealing elements to drive each sealing element to move between an opening position and a sealing position, the plurality of sealing elements avoid the plurality of heat dissipation holes at the opening position, each heat dissipation hole is blocked by the corresponding sealing element at the sealing position, the detection device is used for detecting the temperature in the shell, the control device is respectively connected with the detection device and the driving assembly, and the control device controls the sealing elements to move to the sealing position when the detection result of the detection device is higher than the set temperature and controls the sealing elements to move to the opening position when. According to the motor disclosed by the invention, the switching between the open hole state and the closed state of the motor can be realized, and the motor has the functions of dust prevention and fire prevention.

Description

Electric machine

Technical Field

The invention relates to the technical field of motors, in particular to a motor.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law. The motor mainly functions to generate driving torque, is used as a power source of electrical appliances or various machines, and plays a vital role in production and life.

The motor can produce a large amount of heats after long-time work, if these heats that give out can not give off for a long time, the inside electronic component of motor long-term work is under high temperature environment, and life can shorten greatly, and a large amount of thermal gathering can produce the conflagration hidden danger even.

At present, many motors structurally select the trompil formula, and the heat dissipation has been guaranteed to the trompil motor in the performance, but receives the influence of dust great on life, and stability is lower, needs regularly to shut down the machine and removes dust, can not satisfy the needs of industrial production and life to a certain extent now.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the motor which can realize the back-and-forth switching between the open hole state and the closed state and has the functions of dust prevention and fire prevention.

According to an embodiment of the present invention, a motor includes: the shell is provided with a plurality of heat dissipation holes; the stator is arranged in the shell and comprises a stator core and a coil winding wound on the stator core; a sealing device including a plurality of sealing members and a drive assembly, the drive assembly being respectively coupled to the plurality of sealing members to drive each of the sealing members between an open position in which the plurality of sealing members avoid the plurality of louvers and a sealed position in which each of the louvers is blocked by the respective sealing member; detection means for detecting a temperature within the housing; the control device is respectively connected with the detection device and the driving assembly, and controls the sealing element to move to the sealing position when the detection result of the detection device is higher than the set temperature and controls the sealing element to move to the opening position when the detection result is lower than the set temperature.

According to the motor provided by the embodiment of the invention, the sealing device and the detection device are arranged, the sealing device can enable the motor to be switched between the opening state and the sealing state back and forth under the control of the control device, the opening state can enable the motor to have better heat dissipation, and the motor can be isolated from the outside in the sealing state, so that fire accidents caused by internal fire in accidents are avoided.

According to some embodiments of the invention, the detection device is configured to detect a skin temperature of the winding.

According to some embodiments of the invention, the motor further comprises an alarm device, the alarm device is respectively connected with the control device and the detection device, and the control device controls the alarm device to send out an alarm signal when the detection result of the detection device is higher than the set temperature.

According to some embodiments of the invention, a filter is provided at each of the heat dissipation holes.

Further, the filter element is of a grid structure.

Further, each filter element is defined by stamping a portion of the housing.

In some embodiments of the invention, each of the sealing members is in contact with the filter element in the sealing position.

According to some embodiments of the invention, the number of seals and the number of louvers are the same.

According to some embodiments of the invention, the sealing means is located outside the housing.

In some embodiments of the present invention, the driving assembly includes a driver and a connecting member, the driver drives the connecting member to rotate, a plurality of the sealing members are distributed at intervals around the circumference of the housing, and a plurality of the sealing members are respectively connected to the connecting member.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a motor according to an embodiment of the present invention.

Reference numerals:

the motor (100) is provided with a motor,

a shell 1, a left end cover 11, a right end cover 12,

the heat dissipation holes (2) are arranged on the outer wall,

the filtration member (3) is provided with,

the detection means 4 are arranged to detect the position of the object,

an alarm device (5) is arranged on the base,

the seal (6) is arranged in such a way that,

drive assembly 7, driver 71, connector 72.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A motor 100 according to an embodiment of the present invention is described below with reference to fig. 1.

As shown in fig. 1, a motor 100 according to an embodiment of the present invention includes a housing 1, a stator, a sealing device, a detecting device 4, and a control device.

Specifically, be equipped with a plurality of louvres 2 on the shell 1, use a plurality of louvres 2, can guarantee that motor 100 when long-time operation, the heat that produces can be better transmit to the external world fast. As shown in fig. 1, the heat dissipation holes 2 may be distributed on the housing 1 at intervals in multiple layers and multiple rows, the contours of the heat dissipation holes 2 are all oblong, and an oblong structure is used, so that on one hand, the ventilation rate inside the motor 100 can be ensured, and on the other hand, the oblong shape does not damage the stability of the housing 1.

As shown in fig. 1, a stator is provided in a housing 1, and the stator includes a stator core and a coil winding wound around the stator core.

The sealing device comprises a driving assembly 7 and a plurality of sealing members 6, as shown in fig. 1, the driving assembly 7 is respectively connected with the plurality of sealing members 6 to drive each sealing member 6 to move between an opening position and a sealing position, the plurality of sealing members 6 avoid the plurality of heat dissipation holes 2 in the opening position, and each heat dissipation hole 2 is blocked by the corresponding sealing member 6 in the sealing position. In other words, the driving assembly 7 controls the sealing member 6 to move, and in a normal working state of the motor 100, the driving assembly 7 controls the sealing member 6 to move to the open position so as not to obstruct ventilation of the heat dissipation holes 2, and when a short circuit or a fire occurs inside the motor 100, the driving assembly 7 controls the sealing member 6 to move to a position completely covering the heat dissipation holes 2, so that the inside of the motor 100 is isolated from the outside. The sealing device realizes the switching between the hole opening state and the sealing state of the motor 100. Alternatively, the seal 6 may be an iron sheet to ensure the service life of the seal 6, although it will be appreciated that other materials may be used for the seal 6 as long as the seal 6 is resistant to high temperatures.

The detection means 4 is for detecting the temperature inside the housing 1. As shown in fig. 1, the detection device 4 can detect the temperature inside the casing 1 at any time, so as to provide temperature data for the control device, thereby facilitating timely and effective self-protection of the motor 100.

As shown in fig. 1, the control device is connected to the detection device 4 and the driving assembly 7, respectively, and controls the sealing member 6 to move to the sealing position when the detection result of the detection device 4 is higher than the set temperature, and controls the sealing member 6 to move to the opening position when the detection result is lower than the set temperature. In other words, when the detection device 4 detects that the temperature inside the motor 100 is higher than the set temperature, indicating that the temperature inside the motor is too high and the risk of fire may occur or the fire may occur, the control device moves the sealing member 6 to the sealing position through the driving assembly 7 to isolate the interior of the motor from the outside air, so as to reduce the oxygen concentration inside the motor and reduce the risk of fire or achieve the purpose of fire extinguishing. When the detection device 4 detects that the temperature inside the motor 100 is lower than the set temperature, indicating that there is no fire risk inside the motor, the control device moves the sealing member 6 to the position where the heat dissipation vent 2 is opened by the driving assembly 7. Specifically, the control device can be controlled by a computer, so that the motor 100 can be accurately and effectively protected, and a full-automatic system is used for the control device, so that the motor is time-saving, labor-saving, convenient and quick.

It is understood that the motor is generally provided with a self-protection system, and the control device can control the motor to be in a power-off state when the motor is in an abnormal condition, for example, when the detection result of the detection device 4 is higher than a set temperature.

According to the motor 100 provided by the embodiment of the invention, by arranging the sealing device and the detection device, under the control of the control device, the sealing device can enable the motor 100 to be switched between the opening state and the sealing state, the opening state can enable the motor 100 to have better heat dissipation, and the motor 100 can be isolated from the outside in the sealing state, so that fire accidents caused by internal fire in an accident situation are avoided.

Since the location where there is a risk of fire inside the motor is generally the skin of the winding, in some embodiments of the present invention, the detection device 4 is used to detect the skin temperature of the winding, so that it can be accurately determined whether there is a risk of fire inside the motor. In particular, the detection device 4 may be a contact temperature sensor or a non-contact temperature sensor.

As shown in fig. 1, the motor 100 further includes an alarm device 5, the alarm device 5 is respectively connected to the control device and the detection device 4, and the control device controls the alarm device 5 to send an alarm signal when the detection result of the detection device 4 is higher than the set temperature. Alarm device 5 sets up in motor 100 outsidely, and when motor 100 inside temperature was higher than the settlement temperature, alarm device 5 can remind staff's motor 100 to be in unusual work and load, can remind the staff to take precautions against early when motor 100 self-protection starts.

According to some embodiments of the present invention, as shown in fig. 1, a filter member 3 is provided at each of the heat dissipation holes 2. Louvre 2 is owing to realize the heat exchange with the external world, will certainly lead to the fact external dust, granule etc. to get into louvre 2 of motor 100, and the dust or particulate matter can make motor 100 heat dissipation slow down after long-time accumulation, the consumption increases, and more serious has aggravated the conflagration hidden danger, has reduced motor 100's life, consequently very is necessary to set up at louvre 2 and filters piece 3 to reach dirt-proof effect.

Further, as shown in fig. 1, the filter member 3 has a lattice structure. The grid structure can be by-definition the size in grid space, can be according to the grid of the different specifications of the different use of motor 100 operational environment, and the grid structure is convenient for install in addition, can use modes such as couple connection, bolted connection, welding to realize with louvre 2 fixed, and grid structure ventilation performance is good, can not influence louvre 2's heat dissipation.

Further, as shown in fig. 1, each filter member 3 is defined by press-molding a part of the housing 1. In other words, the filter element 3 can be obtained by direct stamping on the housing 1, the filter element 3 being of one piece construction with the housing 1. The punch forming is a common machining method, the punching cost is low, the product percent of pass is high, the structure of the motor 100 is simplified by adopting an integrated punching mode, and the production and assembly efficiency of the motor 100 is improved.

In some embodiments of the invention, as shown in figure 1, each sealing member 6 is in contact with the filter element 3 in the sealing position. In other words, when the detecting device 4 detects that the internal temperature of the motor 100 is higher than the set temperature, the control device controls the sealing members 6 to move to the sealing position, at this time, each sealing member 6 is in contact with the filter member 3, and when the detecting device 4 detects that the internal temperature of the motor 100 is lower than the set temperature, the sealing members 6 move to the position avoiding the heat dissipation holes 2, that is, the sealing members 6 move back and forth between the position contacting the filter member 3 and the position not contacting the filter member 3, so that the filtering member 3 can be wiped, dust on the filter member 3 falls off, and the purpose of cleaning the filter member 3 is achieved.

According to some embodiments of the present invention, as shown in fig. 1, the number of the sealing members 6 is the same as the number of the heat dissipation holes 2, so that the plurality of sealing members 6 and the plurality of heat dissipation holes 2 are arranged in one-to-one correspondence, and the structure of the sealing device is simple.

As shown in fig. 1, according to some embodiments of the invention, the sealing means is located outside the housing 1. Under the condition that needs, sealing device need guarantee that sealing member 6 seals every louvre 2, and sealing device sets up in the outside of shell 1, makes sealing device more be convenient for install on the one hand, dismantles and change, and on the other hand also is convenient for observe every sealing member 6 and can normally work when the operation test. In addition, if the sealing device is installed inside the housing 1, the requirement for the sealing member 6 is high due to the high internal temperature of the motor 100 during operation, which inevitably increases the manufacturing cost.

In some embodiments of the present invention, as shown in fig. 1, the driving assembly 7 includes a driver 71 and a connecting member 72, the driver 71 drives the connecting member 72 to rotate, the plurality of sealing members 6 are distributed at intervals around the circumference of the housing 1, and the plurality of sealing members 6 are respectively connected to the connecting member 72. In other words, the sealing elements 6 are distributed along the circumferential direction of the housing 1 of the motor 100, and a certain distance is provided between two adjacent sealing elements 6, when the interior of the motor 100 needs to be isolated from the outside, the driver 71 in the driving assembly 7 controls the connecting element 72 to rotate, and the connecting element 72 is connected with the sealing elements 6, and the rotating of the connecting element 72 will drive the sealing elements 6 to move to the sealing position, so as to achieve the sealing of the motor 100.

An electric machine 100 according to a particular embodiment of the invention is described below with reference to fig. 1. It is to be understood that the following description is intended to be illustrative only, and is not intended to be in any way limiting.

Example one

As shown in fig. 1, a motor 100 according to an embodiment of the present invention includes a housing 1, a stator, a sealing device, a detection device 4, and a control device. The left and right sides of shell 1 respectively has an end cover, and left end cover 11, right-hand member lid 12 all use threaded fastener to fix on shell 1, and the central axis department of shell 1 is provided with the stator, and the stator includes stator core and the coil winding of winding on stator core. Along the circumferential direction of the casing 1, two rows of oblong louvers 2 and seals 6 are provided, wherein the number of seals 6 is the same as the number of louvers 2. If when the unexpected short circuit or the high temperature of motor 100 inside catches fire, alarm device 5 who links to each other with detection device 4 can send alarm signal, meanwhile, the controlling means who is connected with detection device 4, under the drive of drive assembly 7, connecting piece 72 can drive the sealing member 6 who links to each other with it, remove to sealed position, with motor 100 inside isolated with outside air, the inside oxygen that lacks of motor 100 to reach the mesh of putting out a fire, avoid motor 100 to catch fire and cause the fire incident.

Specifically, as shown in fig. 1, the sealing device includes a driving assembly 7 and a plurality of sealing members 6, the driving assembly 7 is respectively connected with the plurality of sealing members 6 to drive each sealing member 6 to move between an open position and a sealing position, the plurality of sealing members 6 avoid the plurality of heat dissipation holes 2 in the open position, and each heat dissipation hole 2 is blocked by the corresponding sealing member 6 in the sealing position. In other words, the driving assembly 7 controls the sealing member 6 to move, and under a normal working state of the motor 100, the driving assembly 7 controls the sealing member 6 to move to a position not blocking ventilation of the heat dissipation holes 2, and when a short circuit or a fire occurs inside the motor 100, the driving assembly 7 controls the sealing member 6 to move to a position completely covering the heat dissipation holes 2, so that the inside of the motor 100 is isolated from the outside. The sealing device realizes the switching back and forth of the motor 100 between the hole opening state and the sealing state.

As shown in fig. 1, the connecting member 72 is provided with a central connecting shaft at the center of the left and right sealing members 6, and the connecting rods connected to the left and right sealing members 6 are connected to the central connecting shaft, and are driven to move by the central connecting shaft, and then drive the sealing members 6 to move up and down.

For the purpose of detecting the internal temperature of the motor 100, as shown in fig. 1, a contact temperature sensor is disposed on the detection device 4, so as to facilitate the detection of the winding sheath temperature of the motor 100. The contact temperature sensor is not easily influenced by environmental factors, has high precision and is suitable for long-time tracking detection.

As shown in figure 1, a grid-structured filtering member 3 is arranged on the heat dissipation hole 2, the filtering member 3 is arranged on the outer side plane of the heat dissipation hole 2, and the outer side plane of the filtering member 3 is flush with the plane of the shell 1. The filter member 3 is provided to effectively block dust and small particles outside the motor 100, and to minimize adverse effects of dust on the motor 100.

As shown in figure 1, the sealing member 6 is positioned at the upper side of the heat dissipation hole 2, the sealing member 6 is suitable for sealing corresponding to the heat dissipation hole 2 at the lower side, and the number of the sealing members 6 is the same as that of the heat dissipation holes 2. In order to make the motor 100 more beautiful, the intervals between the heat radiating holes 2 on the circumference of the casing 1 are the same, and the intervals between the plurality of sealing members 6 are also the same.

As shown in figure 1, the filtration piece 3 that is equipped with on the louvre 2, when motor 100 normally works, the dust in the air that gets into motor 100 can be adsorbed on filtering piece 3, through the slight vibrations of motor 100 itself, the dust can slowly drop, in case take place large tracts of land dust gathering phenomenon, the staff also can reciprocate through drive assembly 7 drive sealing member 6, clear up the dust on the filtration piece 3 with it contact to reach dustproof stifled effect of preventing.

In order to facilitate the installation, disassembly, replacement of damaged parts and the like, as shown in fig. 1, the sealing member 6, the connecting member 72 and the driver 71 are all installed on the outer side of the casing 1, and the sealing member 6, the connecting member 72 and the driver 71 are regularly arranged on the outer side of the circumference of the casing 1. If the connecting rod fails or the sealing member 6 does not work, the situation can be timely discovered and remedied. In addition, after installation, debugging is needed, when the motor 100 is in a sealed state, the sealing elements 6 should be able to accurately move to the sealing position, and the sealing device is assembled outside the housing 1 to facilitate observation of whether each sealing element 6 can reach the designated sealing position, so that the motor 100 can reach the best working state.

Example two

This embodiment is substantially identical in construction to the first embodiment, wherein like parts are given like reference numerals, except that each filter member 3 is defined by press-forming a part of the housing 1. In other words, the filter element 3 can be obtained by direct stamping on the housing 1, the filter element 3 being of one piece construction with the housing 1. The punch forming is a common machining method, the punching cost is low, the product percent of pass is high, the structure of the motor 100 is simplified by adopting an integrated punching mode, and the production and assembly efficiency of the motor 100 is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric machine, comprising:

the shell is provided with a plurality of heat dissipation holes;

the stator is arranged in the shell and comprises a stator core and a coil winding wound on the stator core;

the sealing device comprises a driving assembly and a plurality of sealing elements, wherein the driving assembly is respectively connected with the plurality of sealing elements to drive each sealing element to move between an opening position and a sealing position, the plurality of sealing elements avoid the plurality of heat dissipation holes in the opening position, and each heat dissipation hole is blocked by the corresponding sealing element in the sealing position, so that the interior of the motor is isolated from the outside;

detection means for detecting a temperature within the housing;

the control device is respectively connected with the detection device and the driving assembly, controls the sealing element to move to a sealing position when the detection result of the detection device is higher than the set temperature and controls the sealing element to move to an opening position when the detection result is lower than the set temperature,

each heat dissipation hole is provided with a filter element, and each sealing element is contacted with the filter element at the sealing position.

2. The machine of claim 1, wherein said sensing means is adapted to sense the skin temperature of said winding.

3. The motor of claim 1, further comprising an alarm device, wherein the alarm device is respectively connected with the control device and the detection device, and the control device controls the alarm device to send out an alarm signal when the detection result of the detection device is higher than the set temperature.

4. The electric machine of claim 1, wherein the filter element is a grid structure.

5. The electric machine of claim 4 wherein each filter element is defined by stamping a portion of the housing.

6. The electric machine of claim 1, wherein the number of seals and the number of heat dissipation holes are the same.

7. The electric machine of claim 1, wherein the sealing means is located outside the housing.

8. The electric machine of any one of claims 1 to 7 wherein the drive assembly includes a drive and a coupling, the drive driving the coupling in rotation, a plurality of the seals being spaced circumferentially around the housing, the plurality of seals being respectively coupled to the coupling.