KR102024473B1 - Linear Motor for Elevator - Google Patents

Abstract

The present invention relates to a linear motor for an elevator. The linear motor for an elevator separates and installs a stator installed in a hoist way into a plurality thereof for having a gap therebetween not only to be easy for production and installation work but also to significantly shorten installation work time. In addition, separate connection work is unnecessary during the installation work and error correction is easy by adjusting the gap of the stator. Even in the case of repair replacement work for the stator, the stator in a part of sections can be simply removed and replaced, thereby very quickly and conveniently performing maintenance work and other inspection work.

Description

Linear motor for elevators {Linear Motor for Elevator}

The present invention relates to a linear motor for an elevator. More specifically, by separating and installing a plurality of stators installed in the hoistway so that there is a gap therebetween, not only is it easy to manufacture and install, but also significantly shortens the installation work time, and no separate connection work is required during the installation work. In addition, it is easy to correct the error by adjusting the gap of the stator, and even during repair replacement work of the stator, it is possible to simply remove and replace parts of the stator in some sections, so that repair work and other inspection work can be performed very quickly and conveniently. It relates to a linear motor for an elevator.

An elevator is a device for elevating passengers or cargo along a hoistway formed along the up and down direction of a building. A general elevator is a counterweight connected by an elevator car arranged to be capable of hoisting within a hoistway, and an elevator car and a wire rope. ), And a so-called rope type elevator having a hoisting machine for elevating and driving an elevator car and a counterweight by frictionally contacting with a wire rope on an upper side of a hoistway, is widely used.

However, the rope-type elevator is in a state where the elevator car is suspended on the rope, when the height of the lift is high the length of the rope is a problem in terms of efficiency and stability. Above all, with current technology, only one car can be driven in one hoistway, and only vertical movement is possible, which has many disadvantages in terms of transportation efficiency. In addition, the height of the hoistway is also limited by the weight and safety of the ropes and accessories, which is why the height of the building is also limited.

In response to the trend of high-rise buildings, technical research on elevators for manpower transportation in buildings has been continuously conducted.

In order to operate an elevator system suitable for a high-rise building, it is necessary to overcome the limitations of the existing rope driving method, and a new concept of elevator driven by a new actuator should be introduced.

In addition to the problems related to the drive method and the actuator as the drive source, a new type of elevator is inevitably required to maximize transportation efficiency and space utilization suitable for a building structure.

Given these conditions, an elevator that can be applied to a tall building can operate multiple elevator cars simultaneously within a single passage, and the elevator car can move freely in the vertical / horizontal direction along the three-dimensional passage inside the building, It should be able to function as a comprehensive transportation system that can be used in connection with buildings and underpasses.

The elevator currently used adopts the elevating driving method by traction of the rope, so in designing, the load and vibration characteristics of the elevator car in proportion to the number of floors must be taken into consideration, and the vertical / horizontal direction of the elevator car cannot be changed. Since there is a limit to the need for an alternative structure to overcome this, it is urgently needed.

In order to solve these problems, recently, elevators using linear motors have been actively studied. When the elevator is driven using the linear motor, the existing wire rope is unnecessary, and thus, more various driving methods can be realized.

In general, an elevator of a linear motor type is installed by installing a stator along a guide rail of a hoistway, and installing a mover on the elevator car, and configured to vertically and horizontally move the elevator car by using the electromagnetic force of the stator and the mover.

At this time, the stator is generally formed as a single one long along the guide rail, as the stator is formed integrally, the installation work is very difficult and takes a long time, as well as the arrangement state in the entire section due to tolerance It is difficult to maintain accurately, thereby causing problems such as an error in the driving process of the elevator or failing to maintain a stable driving state.

Domestic Patent No. 10-0214692

The present invention has been invented to solve the problems of the prior art, the object of the present invention is to install and install a plurality of stators installed in the hoistway so that there is a gap between each other, not only easy to manufacture and installation work but also installation time It is to provide a linear motor for an elevator that can be significantly shortened.

Another object of the present invention is easy to install the installation work is not necessary since the installation work is not only easy to correct the error by adjusting the gap of the stator, even in the repair replacement work for the stator simply part of the section It provides a linear motor for elevators that can be removed and replaced so that maintenance work and other checks can be done very quickly and conveniently.

Still another object of the present invention is to compensate for the thermal strain due to the gap of the stator even if the thermal strain of the stator increases due to the change of temperature conditions according to the environment, it is possible to minimize the overall dimensional change, thereby always stable It is to provide a linear motor for an elevator that can maintain driving performance.

Yet another object of the present invention is to ensure that the flux flow is always stable and smooth, so that the flux flow does not pass through the gap even when there is a gap between the plurality of stators installed in the hoistway. It is to provide a linear motor for an elevator that can be generated.

The present invention is a linear motor for an elevator comprising a stator module installed along the driving direction of the elevator car and a mover module coupled to the elevator car so as to face each other on both sides of the stator module. Two stators are arranged in a lined apart form so as to have a gap, and each of the plurality of stators is provided on both sides of the center field iron core and the center field iron core, respectively, which are arranged long along the driving direction of the elevator car. The first and second protrusions protrudingly formed so as to be offset from each other by a plurality of intervals, wherein the mover module is disposed opposite to each other on both sides with respect to the stator module, an intermediate slot is formed in the intermediate region and the intermediate Protruding toward the stator module in both regions about a slot; Two armature iron cores in which the first and second mover teeth are formed; A magnet module mounted to the first and second mover teeth of the two armature iron cores so as to face each other; And an armature winding wound around the armature core through the intermediate slot, wherein the magnet module is arranged such that a permanent magnet having a different polarity is the same as the protrusion pitch P, which is an arrangement interval of the first and second protrusions. And the pitch pitch Pt, which is an arrangement interval of the first and second mover teeth, when the polarity arrangement states of the permanent magnets are identical to each other in the first and second mover teeth. An elevator linear motor is provided, which is formed by (2n-1) times (where n is a natural number of 2 or more) of the salient pitch P.

At this time, when the polarity arrangement states of the permanent magnets are different from each other in the first and second mover teeth, the tooth pitch Pt is (2n) times the protrusion pitch P (where n is a natural number of 2 or more). It can be formed as.

Further, if the permanent magnets adjacent to the second mover teeth among the permanent magnets mounted on the first mover teeth and the permanent magnets adjacent to the first mover teeth among the permanent magnets mounted on the second mover teeth are the same polarity, The spacing between the permanent magnets may be formed by (2 m −1) times (where m is a natural number) of the protrusion pitch P.

Further, when the permanent magnets adjacent to the second mover teeth among the permanent magnets mounted on the first mover teeth and the permanent magnets adjacent to the first mover teeth among the permanent magnets mounted on the second mover teeth have different polarities, the corresponding The spacing between the permanent magnets may be formed by (2 m) times (where m is a natural number) of the salient pitch P.

In addition, the present invention is a linear motor for an elevator comprising a stator module installed along the driving direction of the elevator car, and a mover module coupled to the elevator car so as to face each other on both sides of the stator module, wherein the stator module Is installed in a form arranged in a line spaced apart so that a plurality of stators have a gap, each of the plurality of stator, the central field iron core is arranged long along the running direction of the elevator car, and both sides of the center field iron core portion Each of the first and second protrusions protrudingly formed so as to be offset from each other at equal intervals, wherein the mover module is disposed opposite to each other on both sides of the stator module, the intermediate slot is formed in the middle region Protruding toward the stator module in both regions about the intermediate slot Are two armature cores in which the first and second mover teeth are formed; A magnet module mounted to the first and second mover teeth of the two armature iron cores so as to face each other; And an armature winding wound around the armature core through the intermediate slot, wherein the magnet module includes a permanent magnet having the same polarity as each other and a protrusion arranged in an area adjacent to the permanent magnet. When the alternating arrangement state of the permanent magnet and the salient poles is the same in the first and second mover teeth, the first and second movers are formed to be arranged alternately with each other at the same arrangement interval. To provide an elevator linear motor, characterized in that the tooth pitch Pt, which is the arrangement interval of the first and second mover teeth, is formed at (2n-1) times (where n is a natural number of two or more) of the salient pitch P. do.

At this time, when the alternating arrangement state of the permanent magnet and the salient pole is different from each other in the first and second mover teeth, the tooth pitch Pt is (2n) times the salient pitch P (where n is 2 or more). Natural water).

Further, among the permanent magnet mounted on the first mover tooth and the protrusion, the object closest to the second mover tooth, and the permanent magnet mounted on the second mover tooth and the object closest to the first mover tooth, are both present. If the permanent magnets or salient poles are the same as each other, the spacing between the permanent magnets or salient poles may be formed at (2 m-1) times the methane pitch P, where m is a natural number.

Further, the object closest to the second mover tooth among the permanent magnets and the salient poles mounted on the first mover teeth, and the object closest to the first mover tooth among the permanent magnets and the salient poles mounted on the second mover teeth, If one is a permanent magnet and the other is a salient pole, the arrangement interval between the permanent magnet and the salient pole may be formed by (2 m) times the Wherein pitch (P), where m is a natural number.

In addition, the first and second mover teeth may be formed to have the same width protruding toward the stator module.

According to the present invention, by stably installing a plurality of stators installed in the hoistway so that there is a gap therebetween, the manufacturing and installation work is easy and the installation work time can be significantly shortened.

In addition, it is easy to install because there is no need for additional connection work during installation, and the error can be easily corrected by adjusting the gap of the stator. As a result, maintenance work and other inspection work can be performed very quickly and conveniently.

In addition, even if the thermal deformation of the stator increases due to the change of temperature conditions according to the environment, the thermal deformation can be compensated by the gap of the stator, thereby minimizing the overall dimensional change, thereby maintaining stable running performance at all times. It has an effect.

In addition, even if there is a gap between the plurality of stators installed in the hoistway, the flux flow does not pass through the gap, thereby making the flux flow stable and smooth at all times, thereby stably generating propulsion force by electromagnetic force. There is.

1 is a view conceptually showing an installation structure of a linear motor for an elevator according to an embodiment of the present invention;
2 is a cross-sectional view taken along the line “AA” of FIG. 1 to explain an internal structure of an elevator linear motor according to an embodiment of the present invention;
3 is a view conceptually showing a configuration of a stator module of an elevator linear motor according to an embodiment of the present invention;
4 is a view conceptually showing a configuration of a mover module of an elevator linear motor according to an embodiment of the present invention;
5 is a view for explaining the principle of the magnetic flux flow of the linear motor for an elevator according to an embodiment of the present invention,
6 and 7 conceptually show the magnetic flux flow state of the linear motor for an elevator according to an embodiment of the present invention,
8 to 10 exemplarily illustrate various forms of a mover module according to an embodiment of the present invention;
11 is a view for explaining a magnetic flux flow scheme for the basic structure of the linear motor according to an embodiment of the present invention,
12 is a view for explaining a problem of magnetic flux flow that may occur in the basic structure of the linear motor according to an embodiment of the present invention;
13 is a view for explaining the basic structure of the linear motor solved the problem of the magnetic flux flow shown in FIG.
14 is a view for explaining a permanent magnet arrangement structure of the mover module according to an embodiment of the present invention,
15 and 16 exemplarily illustrate magnetic flux flows generated in the arrangement structure of a permanent magnet according to an embodiment of the present invention;
17 is a view for explaining the relationship between the gap size of the stator module and the number of permanent magnets according to an embodiment of the present invention,
18 is a view for explaining a winding method for the armature winding of the mover module according to an embodiment of the present invention,
19 is a view schematically showing another form of the linear motor according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a view conceptually showing an installation structure of an elevator linear motor according to an embodiment of the present invention, Figure 2 is a view for explaining the internal structure of the elevator linear motor according to an embodiment of the present invention 3 is a cross-sectional view taken along line "AA", and FIG. 3 conceptually illustrates a configuration of a stator module of an elevator linear motor according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a view conceptually showing a configuration of a mover module of an elevator linear motor according to an embodiment of the present invention, and FIG. 5 is a view for explaining a principle of magnetic flux flow of an elevator linear motor according to an embodiment of the present invention.

Elevator linear motor according to an embodiment of the present invention as a device that can be more convenient to perform the installation and maintenance work, the stator module 40 is disposed long in the hoistway along the traveling direction of the elevator car 10 And a mover module 50 coupled to the elevator car 10 so as to face each other on both sides of the stator module 40 along the longitudinal direction of the stator module 40.

As shown in FIG. 1, a hoistway through which the elevator car 10 can move is installed inside the building. In the elevator apparatus of the linear motor type, the hoistway may be installed not only vertical but also in a horizontal direction and an inclined direction. The elevator car 10 moves along the hoistway via a linear motor or the like.

The guide rail 30 may be installed in the hoistway wall 20 of the hoistway along the direction of the hoistway, and when the guide rail 30 is installed, the elevator car 10 moves along the guide rail 30 in the hoistway. In this case, the elevator car 10 is moved by the linear motor (60).

The linear motor 60 includes a stator module 40 and a mover module 50, the stator module 40 being installed in a hoistway along a traveling direction of the elevator car 10. The stator module 40 may be installed directly on the hoistway wall 20 of the hoistway, and when the guide rail 30 is installed on the hoistway wall 20, the stator module 40 is formed along the guide rail 30 to guide the rail 30. It may be installed in a form that is fixed to one end of the. The mover module 50 is fixedly coupled to the elevator car 10 so as to be located at both sides of the stator module 40 along the longitudinal direction of the stator module 40. A propulsion force is generated by the electromagnetic force generated between the stator module 40 and the mover module 50, and the mover module 50 and the elevator car 10 move along the stator module 40 by this propulsion force.

The stator module 40 according to an embodiment of the present invention is installed in a form in which a plurality of stators 100 are arranged along a guide rail 30 so as to be spaced apart from each other to have a predetermined gap d.

That is, in one embodiment of the present invention, unlike the prior art, the stator is not integrally formed, but the stator 100 is provided in a plurality of relatively short lengths and installed in a separated form having a predetermined gap d.

At this time, the mover module 50 and the stator module 40 are formed such that the flow of magnetic flux formed through the mover module 50 and the stator module 40 does not pass through the gap d of the stator 100. Is formed.

As such, the magnetic flux flows through the mover module 50 and the stator module 40 so as not to pass through the gap d of the stator 100, so that even if a gap d exists in the stator module 40, Magnetic flux flow is generated stably without interruption or sudden drop, and propulsion by electromagnetic force is generated stably.

In addition, since the stator module 40 installed along the hoistway is separated and installed by the plurality of stators 100, the stator module 40 may be easily manufactured and installed, and the installation work time may be significantly shortened. .

In the case of the stator module according to the prior art, it is installed as one unit in the entire section of the hoistway along the guide rail, so that all the connection parts of the stator module must be connected by welding or the like during the installation process, and when an error occurs, the correction is complicated and difficult. Since there is a problem that the repair work must be performed in a manner such as cutting some sections of the integrated stator module even during repair replacement work for the stator module, the work is very difficult and difficult.

However, the stator module 40 according to an embodiment of the present invention is provided by separating and installing a plurality of stators 100 in a form having a predetermined gap d, so that no additional connection work is required during installation. Not only this is easy, it is easy to correct the error by adjusting the gap (d), and even during repair replacement work on the stator module 40, the part of the stator 100 can be simply removed and replaced, thereby performing maintenance work and other inspections. Work can also be done very quickly and conveniently.

In addition, when the stator module 40 is formed integrally long, the heat deformation of the stator module 40 is increased due to the change of temperature conditions according to the environment, and thus a dimensional change occurs, thereby causing problems in the running performance of the elevator. In this embodiment, since the stator module 40 is separately installed through the plurality of stators 100, thermal deformation may be compensated for by the gap d even if thermal deformation occurs. It is possible to minimize the dimensional change, thereby maintaining a stable running performance at all times.

Looking at the detailed configuration in more detail, first, the plurality of stators 100 may be all formed in the same shape, each stator 100, the central field iron core is formed long along the traveling direction of the elevator car 10 110 and the first salient pole portion 120 and the second salient pole portion 130 protruding from each other on both sides of the central field iron core part 110 may be included.

At this time, the first salient pole portion 120 and the second salient pole portion 130 are disposed to be offset from each other along the width direction of the central field iron core portion 110. More specifically, the first salient pole part 120 is formed to protrude on one side of the central field iron core part 110, and the second salient pole part 130 is protruded to the other side of the center field iron core part 110. The first protrusion 120 and the second protrusion 130 are formed in the same protruding shape. The plurality of first protrusions 120 are disposed to be spaced apart to have the same arrangement interval 2P, and the plurality of second protrusions 130 are arranged to be spaced apart from the separation interval of the first protrusions 120. Spaced apart at 2P. In addition, since the second protrusion 130 is located at an intermediate point of the separation interval of the first protrusion 120, the arrangement interval P of the first protrusion 120 and the second protrusion 130 is also the same. Has

The stator 100 having the plurality of first salient poles 120 and the second salient poles 130 has a gap d therebetween, and is arranged in a plurality, and the spacing of the first salient poles 120 is 2P. ) Is arranged to remain the same even between two stators 100 neighboring each other. The arrangement interval 2P of the second salient pole portions 130 is also arranged to remain the same between the two stators 100 neighboring each other.

That is, as shown in FIG. 3, the arrangement interval between the first protrusions 120 and the second protrusions 130 arranged to be offset from each other is P, and the arrangement intervals between the first protrusions 120 and the second stones are arranged. The arrangement interval between the pole parts 130 is 2P. At this time, a gap d exists between the stators 100 adjacent to each other. Even if such a gap d exists, the bottommost first protrusion 120 of the upper stator 100 and the lower side of the stator 100 adjacent to each other are present. The arrangement interval of the uppermost second salient pole portion 130 of the stator 100 is kept equal to P, and the lowermost second salient pole portion 130 of the upper stator 100 and the lower side of the stator 100 adjacent to each other, The arrangement interval of the uppermost second salient pole portion 130 of the stator 100 is kept the same at 2P.

In this way, even between the stator 100 adjacent to each other, the gap between the plurality of stators 100 in order to keep the arrangement interval (P, 2P) between the first salient pole portion 120 and the second salient pole portion 130 is constant. (d) can be adjusted.

The gap (d) between the stator 100 is predetermined in the manufacturing step of the plurality of stators 100, by setting the gap (d) in accordance with the predetermined gap (d) dimensions during the installation operation of the stator 100, Normal installation work may be performed. In this case, an error may occur, and thus, the intervals P and 2P between the first protrusion 120 and the second protrusion 130 may be adjusted in a manner of adjusting the gap d. ) Can be kept constant.

On the other hand, the gap d between the stator 100 predetermined in the manufacturing step is the first so that the first salient pole portion 120 and the second salient pole portion 130 is not removed, but at least partly at a predetermined arrangement interval (P). It may be determined to be smaller than P which is an arrangement interval between the protrusion 120 and the second protrusion 130. That is, the gap d between the stators 100 may be determined in the range of (0 <d <P).

The mover module 50 is disposed opposite to each other on both sides of the stator module 40, and an intermediate slot 203 is formed in an intermediate region, and the stator module 40 is disposed in both regions about an intermediate slot 203. Two armature cores 201 and 202 on which the first and second mover teeth 204 and 205 protrude toward each other and the first and second mover teeth 204 and 205 of the two armature cores 201 and 202, respectively, facing each other. A magnet module (M) comprising at least one permanent magnet (210) disposed to have the same arrangement interval (P, 2P) as the first and second protrusions (120, 130), and the armature core through the intermediate slot (203). And armature windings 230 and 240 wound around 201 and 202.

The two armature cores 201 and 202 face each other in such a way that the first armature core 201 is disposed on one side of the stator module 40 and the second armature core 202 is disposed on the other side of the stator module 40. May be arranged.

As shown in FIGS. 2 and 4, the magnet module M is formed to face each other on the first and second mover teeth 204 and 205 respectively formed on the two armature cores 201 and 202, respectively. The permanent magnet 210 having the same polarity (N pole or S pole) and the protrusion 220 arranged in the region adjacent to the permanent magnet 210 are disposed of the first and second protrusions 120 and 130. It may be configured in such a way that they are arranged alternately with each other at the same arrangement interval as the protrusion pitch P, which is the interval.

That is, the permanent magnets 210 having the same polarity (N pole) may be arranged in a line to be spaced apart from each other, and the protrusion pole 220, which is a simple magnetic body, may be formed in a region therebetween. The polarity (N pole) and the opposite polarity (S pole) of the permanent magnet 210 are represented.

Alternatively, the magnet module M may be configured in such a way that the permanent magnets 210 (211, 212, 212) having different polarities (N pole, S pole) are alternately arranged in a row at the same placement interval as the protrusion pitch P. FIG. (See Figure 8).

Meanwhile, of the plurality of permanent magnets 210 mounted on the first mover tooth 204, the permanent magnet 210 adjacent to the second mover tooth 205 and the plurality of permanent magnets mounted on the second mover tooth 205. The disposition interval between the permanent magnets 210 adjacent to the first mover teeth 204 of 210 is formed by n times the protrusion pitch P (where n is a natural number) (see FIG. 14). For example, as shown in FIG. 4, the lowermost of the permanent magnets 210 of the permanent magnets 210 of the first mover tooth 204 and the permanent magnets 210 of the second mover teeth 205 are positioned at the uppermost end. The spacing between the positioned permanent magnets 210 may be 3P, which is three times the pitch of the salient poles P. FIG.

More specifically, as shown in FIGS. 2 and 4, the permanent magnet 210 adjacent to the second mover tooth 205 of the plurality of permanent magnets 210 mounted on the first mover tooth 204, and If the permanent magnets 210 adjacent to the first mover teeth 204 of the plurality of permanent magnets 210 mounted on the two mover teeth 205 have the same polarity, the spacing between the two permanent magnets 210 is the salient pole. It may be formed by an odd multiple of the pitch (P).

As a result, the permanent magnets 210 mounted on the first mover teeth 204 and the permanent magnets 210 mounted on the second mover teeth 205 form the first protrusion 120 and the second stones of the stator 100. They have different relative positions with respect to the pole portion 130.

That is, based on the state shown in FIG. 4, the permanent magnet 210 located at the first mover teeth 204 of the armature cores 201 and 202 is positioned on the same straight line as the second protrusion 130, and the armature The permanent magnet 210 located on the second mover tooth 205 of the iron cores 201 and 202 is positioned on the same straight line as the first protrusion 120.

According to this configuration, the flow of magnetic flux by the permanent magnets mounted to the first and second mover teeth 204 and 205 of the two armature cores 201 and 202 is shown as shown in FIG. That is, since the permanent magnet 210 mounted on the first mover tooth 204 of the second armature iron core 202 is the N pole, the magnetic flux flow is formed from the permanent magnet 210. The first stone is introduced into the second protrusion 130 of the stator 100 adjacent to the permanent magnet 210, branched from the central field iron core 110 and spaced apart from the upper and lower portions of the second protrusion 130. It flows to the pole portion 120 and shows a flow flowing into the upper and lower sides of the permanent magnet 210 mounted on the first mover tooth 204 of the first armature core 201, that is, the protrusion 220. At this time, since the permanent magnet 210 of the first armature core 201 also represents the N pole, the magnetic flux flow does not flow into the permanent magnet 210 of the first armature core 201, but toward the upper and lower salient poles 220. Inflow. At this time, since the salient pole 220 is relatively closer to the first salient pole part 120, the flux flows from the first salient pole part 120 toward the salient pole 220, in which case, the salient pole 220 is a permanent magnet. It acts as an S pole having a different polarity from (210). In addition, since the magnetic flux flows from the permanent magnet 210 of the second armature core 202 is the same polarity (N pole) of the permanent magnet 210 of the first armature core 201, a force that repels each other generates magnetic flux. The branching process of the flow is made more smoothly, and thus the flux flow into the salient pole 220 side of the first armature core 201 is made smoother.

On the other hand, the armature windings 230 and 240 are wound in opposite directions at the first mover teeth 204 and the second mover teeth 205. Intermediate slots 203 are formed at the centers of the mutually opposing surfaces of the two armature cores 201 and 202, and the first mover teeth 204 and the second mover teeth 205 are formed on both sides of the intermediate slots 203, respectively. The armature windings 230 and 240 may be wound in opposite directions to surround the first mover tooth 204 and the second mover tooth 205 through the intermediate slot 203, respectively. Each armature winding (230, 240) may be formed to be wound independently, it may be configured to be connected in series separately.

Referring to the entire magnetic flux flow according to the above-described structure, first, as shown in FIG. 6, the magnetic flux flow from the plurality of permanent magnets 210 mounted on the second mover tooth 205 of the second armature iron core 202 is shown. Is discharged and flows into the second salient pole portion 130 of the stator 100, and each magnetic flux flows through the first salient pole portion 120 after branching at the central field core 110 of the stator 100. It flows into the armature core 201. At this time, the first armature 201 flows into the salient pole 220 between the permanent magnets 210 mounted on the second mover teeth 205. Since the branching and the flow of the magnetic flux are in accordance with the principle described in FIG. 5, detailed description thereof will be omitted.

In addition, magnetic flux flow is also emitted from the plurality of permanent magnets 210 mounted on the first mover teeth 204 of the first armature core 201 and flows into the first salient pole portion 120 of the stator 100. Each magnetic flux flow branches from the central field iron core 110 of the stator 100 and then flows into the second armature core 202 through the second salient pole 130. At this time, the first armature 202 of the second armature 202 flows into the region of the salient pole 220 between the permanent magnet 210 mounted on the teeth.

The magnetic flux flow emitted from the permanent magnet 210 of the second mover tooth 205 of the second armature core 202 flows into the salient 220 of the second mover tooth 205 of the first armature core 201. Thereafter, the first armature core 201 flows to the permanent magnet 210 side of the first mover tooth 204 as a whole, and then the permanent magnet 210 of the first mover tooth 204 of the first armature core 201. ) Is introduced into the region of the salient pole 220 of the first mover tooth 204 of the second armature core 202, and the permanent magnet 210 of the second mover tooth 205 as a whole at the second armature core 202. After flowing to the) side, the circulating flow is released again.

According to the magnetic flux flow, the magnetic flux flows in the first mover teeth 204 and the second mover teeth 205 of the armature cores 201 and 202, and the winding direction of the armature windings 230 and 240 corresponds to the first mover teeth. Since 204 and the second mover tooth 205 are opposite, the mover module 50 generates the same propulsion force due to electromagnetic force.

In addition, the flux flow discharged from the permanent magnets 210 of the armature cores 201 and 202 flows into the other armature cores 201 and 202 through the salient poles 120 and 130 which are branched and shifted from the stator 100. The stator 100 is separated through the gap d because the two armature cores 201 and 202 exhibit a large circulation flow sequentially passing through the first mover tooth 204 and the second mover tooth 205 as a whole. Even if it is, the flux flow through the gap d of the stator 100 is prevented, and even if the flux flow through the gap d occurs, it is very small and this is negligible. Therefore, the stator module 40 according to an embodiment of the present invention has no influence on the flux flow even when the plurality of stators 100 are separated and installed through the gap d, so that the running performance of the linear motor is stably maintained. .

On the other hand, Figure 7 shows the magnetic flux flow in the state in which the mover module 50 is moved along the elevator car 10 to the right direction P interval based on the state shown in FIG. As shown in FIG. 6, the magnetic flux flow appears, except that the overall direction of the magnetic flux flow is formed in a clockwise direction in FIG. 6, but in a counterclockwise direction in FIG. 7. In this process, since the direction of the current flowing through the armature windings 230 and 240 is changed, the propulsion direction by the electromagnetic force is always kept the same regardless of the moving state of the mover module 50.

Hereinafter, a detailed structure of the mover module 50 and the stator module 40 according to an embodiment of the present invention will be described in detail.

8 to 10 are views exemplarily illustrating various forms of a mover module according to an embodiment of the present invention.

As described above, the mover module 50 according to the embodiment of the present invention includes armature cores 201 and 202 having the first and second mover teeth 204 and 205 formed thereon, and mounted on the first and second mover teeth 204 and 205. It comprises a magnet module (M) including at least one permanent magnet (210) and the armature winding (230).

In this case, the magnet module M may be configured such that the permanent magnets 210 (211, 212, 212) having different polarities (N pole, S pole) are alternately arranged in a row as shown in (a) of FIG. . In addition, as shown in FIGS. 8B and 8C, the permanent magnets 210 having the same polarity (N pole) and the protrusions 220 disposed in an area adjacent to the permanent magnets 210 are provided. It may be configured in a form arranged alternately with each other. In this case, the arrangement structure of the permanent magnet 210 and the salient pole 220 may be set differently as shown in FIGS. 8B and 8C in the first and second mover teeth 204 and 205.

On the other hand, the permanent magnet 210 and the salient pole 220 is set to the same interval as the salient pitch (P), at this time, the width of the permanent magnet 210 and the salient pole 220 is also shown in FIG. It is formed in the same manner as the pitch of the salient pole (P) and a plurality of permanent magnets 210 and the salient pole 220 may be arranged in the form of contact with each other adjacent to each other. In addition, as shown in FIG. 9, the widths of the permanent magnets 210 and the salient poles 220 are smaller than the salient pitch P so that the plurality of permanent magnets 210 and the salient poles 220 do not contact each other. It may be arranged spaced apart.

An intermediate slot 203 is formed in an intermediate region of the armature cores 201 and 202, and first and second mover teeth 204 and 205 are formed on both sides of the intermediate slot 203, wherein the intermediate slot 203 is formed. 8 and 9 may be formed in a form that is open to one side (open type), as shown in Figure 10 may be formed in a form that does not open to one side (closed type) .

11 is a view for explaining a magnetic flux flow scheme for the basic structure of the linear motor according to an embodiment of the present invention, Figure 12 is a magnetic flux flow that may occur in the basic structure of the linear motor according to an embodiment of the present invention FIG. 13 is a view for explaining the basic structure of the linear motor which solves the problem of magnetic flux flow shown in FIG. 12.

In order to generate the magnetic flux flow in the linear motor according to an embodiment of the present invention, as shown in FIG. 11, at least one permanent magnet 210 having different polarities is provided in the first and second mover teeth 204 and 205, respectively. The structure that two are installed becomes a basic structure. In this case, the flux flow represents the flow circulating through the permanent magnet 210 and the stator module 40 of the first and second mover teeth 204, 205 as shown in the direction of the arrow in FIG. 11. Since the magnetic flux flow is the same principle as described with reference to FIGS. 1 to 7, detailed description thereof will be omitted.

At this time, when the gap (d) is present in the stator module 40 according to an embodiment of the present invention, as shown in (a) and (b) of Figure 12 wherever the gap (d) is formed The problem arises that the flux flows through the liver (d). Since the magnetic flux flow is drastically lowered in the course of passing the magnetic flux flow through the gap d, the propulsion force of the linear motor cannot be stably generated when such magnetic flux flow occurs. Therefore, when the stator module 40 is installed in a form in which the gap d exists using the plurality of stators 100, the magnetic flux flow should be configured to be smoothly formed without passing through the gap d.

According to an embodiment of the present invention, as shown in FIG. 13, the number of permanent magnets 210 having different polarities (N pole, S pole) mounted on the first and second mover teeth 204 and 205, respectively, is at least three. By setting the arrangement structure to be the same arrangement interval as the protrusion pitch P as described above, even when the gap d exists in the stator module 40, the stable flux flow in which the magnetic flux flow does not pass through the gap d This can be formed. In this case, a more detailed arrangement rule may be applied to the arrangement structure of the permanent magnet 210, which will be described later.

11 to 13 illustrate the structure in which the permanent magnets 210: 211 and 212 having different polarities (N pole and S pole) are arranged in a row on the first and second mover teeth 204 and 205. As shown in b), even in a structure in which the permanent magnets 210 and the salient poles 220 having the same polarity (N pole) are arranged in a line, the salient poles 220 function substantially as the S poles. As a result, a stable flux flow is formed.

Hereinafter, a description will be given of a structure in which the permanent magnets 210: 211 and 212 having different polarities (N pole and S pole) are arranged in a line with respect to the magnet module M, and the permanent magnets having the same polarity (N pole) ( The structure in which the 210 and the salient poles 220 are arranged in a line is the same as the case where the salient pole 220 is replaced with the S-pole permanent magnet, and thus description thereof will be omitted.

14 is a view for explaining the structure of the permanent magnet arrangement of the mover module according to an embodiment of the present invention, Figures 15 and 16 are the flux flow generated in the arrangement of the permanent magnet according to an embodiment of the present invention Illustrated as an example.

As described above, the armature cores 201 and 202 have an intermediate slot 203 formed in an intermediate region, and protrude toward the stator module 40 in both regions around the intermediate slot 203. 204 and 205 are formed, and the magnet module M is mounted to the first and second mover teeth 204 and 205.

The first and second mover teeth 204 and 205 are formed in the same shape as the protruding height and width protruding toward the stator module 40, and thus, the permanent magnets 210 mounted to the first and second mover teeth 204 and 205. The number of) is the same as each other. Of course, even when the magnet module M is formed of the permanent magnets 210 and the salient poles 220, the total number of the permanent magnets 210 and the salient poles 220 is similar to each other in the first and second mover teeth 204 and 205. same.

According to the shape of the first and second mover teeth 204 and 205, the distance between the centerline of the first mover tooth 204 and the center line of the second mover tooth 205 is arranged in the arrangement of the first and second mover teeth 204 and 205. The tooth pitch Pt may be defined as an interval, and the tooth pitch Pt may be formed differently depending on whether the polarity arrangement of the permanent magnets 210 is the same in the first and second mover teeth 204 and 205. do.

That is, as shown in FIG. 14A, when the polarity arrangement states of the permanent magnets 210 are the same in the first and second mover teeth 204 and 205, the tooth pitch Pt is equal to the protrusion pitch P. (2n-1) times (where n is a natural number of 2 or more), and the polarity arrangement state of the permanent magnets 210 in the first and second mover teeth 204 and 205 as shown in FIG. When is different from each other, the tooth pitch Pt is formed by (2n) times (where n is a natural number of two or more) of the salient pole pitch P.

In other words, when the polarity arrangement states of the permanent magnets 210 in the first and second mover teeth 204 and 205 are identical to each other, the tooth pitch Pt is formed to be an odd multiple of three or more times the salient pitch P, When the polarity arrangement states of the permanent magnets 210 in the second mover teeth 204 and 205 are different from each other, the tooth pitch Pt is formed to be an even multiple of four or more times the salient pitch P. As shown in FIG.

Through this structure, even if the gap d is present in the stator module 40, the magnetic flux flow through the permanent magnet 210 is formed not to pass through the gap d to form a stable magnetic flux flow.

Meanwhile, in this case, the permanent magnet 210 adjacent to the second mover tooth 205 and the second of the permanent magnets 210 mounted on the first mover tooth 204 as shown in FIG. If the permanent magnets 210 adjacent to the first mover teeth 204 of the permanent magnets 210 mounted on the mover teeth 205 are of the same polarity, the arrangement interval between the two permanent magnets 210 is the protrusion pitch P. The second mover tooth of the permanent magnet 210 is formed of (2m-1) times (where m is a natural number), and is mounted on the first mover tooth 204 as shown in (b) of FIG. If the permanent magnet 210 adjacent to 205 and the permanent magnet 210 adjacent to the first mover tooth 204 among the permanent magnets 210 mounted on the second mover tooth 205 are of different polarities, the two The disposition interval between the permanent magnets 210 is formed by (2 m) times (where m is a natural number) of the pole pitch P.

According to this structure, the permanent magnets 210 of the first mover teeth 204 and the permanent magnets 210 of the second mover teeth 205 are provided with respect to the first and second protrusions 120 and 130 of the stator module 40. The relative positions in the traveling direction of the elevator car 10 are arranged differently. That is, the N pole permanent magnet 211 of the second mover tooth 205 is formed when the N pole permanent magnet 211 of the first mover tooth 204 is positioned on the same horizontal line as the second protrusion 130. 1 is located on the same horizontal line as the protrusion 120. As a result, as described above with reference to FIGS. 6 and 7, a stable flux flow is generated as a whole.

Meanwhile, although not shown, when the magnet module M is formed in a form in which the permanent magnets 210 and the poles 220 are alternately arranged in a row, the poles 220 instead of the S pole permanent magnets 210 of FIG. 14. With the same position, the same layout structure is applied.

15 and 16 exemplarily illustrate the tooth pitch Pt and the number of permanent magnets 210 according to the arrangement described with reference to FIG. 14. The mover module 50 shown in FIG. The magnetic flux flows through the gap d when the polarity arrangement of the permanent magnets 210 is the same in the second mover teeth 204 and 205 and the tooth pitch Pt is 5P which is five times the salient pitch P. Stable flow. At this time, the arrangement interval of the permanent magnets 210 adjacent to each other in the first and second mover teeth 204 and 205 is 2P, which is an even multiple of the salient pitch P. FIG. The mover module 50 shown in FIG. 16 is a case where the polarity arrangement of the permanent magnets 210 is different in the first and second mover teeth 204 and 205, and the tooth pitch Pt is four times the salient pitch P. In the state of 4P, the flux flow shows a stable flow without passing through the gap d. At this time, the arrangement interval of the permanent magnets 210 adjacent to each other in the first and second mover teeth 204 and 205 is P, which is an odd multiple of the protrusion pitch P. FIG.

17 is a view for explaining the relationship between the gap size of the stator module and the number of permanent magnets according to an embodiment of the present invention.

The gap d between the plurality of stators 100 of the stator module 40 is preferably set smaller than the salient pitch P as described with reference to FIGS. 1 to 7, but may be formed to have a wider gap separately. It may be.

The first and second protrusions 120 and 130 are spaced apart at intervals of the pitch of the protrusions P. In this case, the protruding widths bw of the first and second protrusions 120 and 130 are the same. As described in FIG. 13, the number of permanent magnets 210 mounted on the first and second mover teeth 204 and 205, respectively, is set to at least three, and the gap d between the stators 100 is the first and the first. When installed below the width (bw) of the two pole portions (120, 130), even if the number of the permanent magnets 210 as shown in FIG. That is, when the gap d between the stators 100 is installed to be less than the width bw of the first and second protrusions 120 and 130, the number of permanent magnets 210 may be set to three or more.

On the contrary, when the gap d between the stators is provided to be equal to or greater than the width bw of the first and second protrusions 120 and 130, the minimum number of permanent magnets 210 is set according to the following rule.

In the range where the gap d between stators is nP + bw < d &lt; (n + 1) P + bw, the number of permanent magnets 210 is set to (n + 4) or more. Where n is an integer greater than or equal to 0, P is the pitch of the protrusions, bw is the width of the first and second protrusions, and d is the gap.

For example, as shown in FIG. 17, the gap d between the stators is greater than the width bw of the first protrusion 120 or the second protrusion 130, and the width bw and the pitch of the protrusion P are as follows. If less than the sum of), the number of permanent magnets 210 is set to at least four, in this case, the magnetic flux flow is stably formed in a form that does not pass through the gap (d).

FIG. 17 illustrates a configuration in which the permanent magnets 210 having different polarities (N pole and S pole) are alternately arranged in the first and second mover teeth 204 and 205, but the same polarity as described above. The same applies to the case where the permanent magnet 210 having the N pole) and the salient pole 220 are alternately arranged in a line. That is, in the range where the gap d between the stators is nP + bw ≤ d <(n + 1) P + bw, the total number of the permanent magnets 210 and the protrusions 220 is set to (n + 4) or more. When the gap d between the stator 100 is less than the width bw of the first and second protrusions 120 and 130, the total number of the permanent magnets 210 and the protrusions 220 is set to three or more. do.

As such, by adjusting the minimum number of permanent magnets 210 according to the size of the gap d between the stators, as shown in FIG. 17, the flux flow may be stably formed without passing through the gap d. .

FIG. 18 is a view illustrating a winding method of an armature winding of a mover module according to an embodiment of the present invention, and FIG. 19 schematically illustrates another form of a linear motor according to an embodiment of the present invention. to be.

FIG. 18 exemplarily shows a winding scheme for the armature winding 230 of the mover module 50. Unlike shown in FIGS. 2 and 4, the armature winding 230 has an armature core through an intermediate slot 203. The wires 201 and 202 may be wound in the form of wrapping in the transverse direction.

The armature winding 230 may be variously changed as long as the armature winding 230 has a form in which magnetic flux flows through an inner space of a winding form.

In addition, as shown in FIG. 19, a linear motor according to an embodiment of the present invention includes a mover module 50: 50a including two armature iron cores 201 and 202, a magnet module M, and an armature winding 230. The three, 50b, 50c may be provided to be arranged in a line along the traveling direction of the elevator car.

Each mover module 50a, 50b, 50c can be used as a three-phase device having three voltages shifted by 120 ° of each electrical angle. In addition, two or more mover modules 50 can be used and It can be used as a multi-phase device that generates a multi-phase electromotive force or an electric motor that consumes a multi-phase alternating current power by displacing them. Of course, one mover module 50 may operate by single phase AC voltage and current or generate single phase AC electromotive force.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

40: stator module 50: mover module
60: linear motor
100: stator
110: core field iron core
120: first salient pole 130: second salient pole
201: first armature iron core 202: second armature iron core
203: middle slot
204: first mover teeth 205: second mover teeth
210: permanent magnet 220: salient pole
230, 240: armature winding

Claims (9)

An elevator linear motor including a stator module installed along a driving direction of an elevator car, and a mover module coupled to an elevator car so as to face each other on both sides of the stator module.
The stator module is installed in a form arranged in a line spaced apart so that a plurality of stators have a gap,
Each of the plurality of stators
A center field iron core disposed long along the driving direction of the elevator car, and first and second salient poles protrudingly arranged to be offset from each other at equal intervals on both sides of the center field iron core;
The mover module
Two armatures disposed opposite to each other on both sides of the stator module and having an intermediate slot formed in an intermediate region and protruding toward the stator module in both regions around the intermediate slot. Iron core;
A magnet module mounted to the first and second mover teeth of the two armature iron cores so as to face each other; And
An armature winding wound around the armature core through the intermediate slot,
The magnet module is formed in such a way that the permanent magnets having different polarities are alternately arranged in the same arrangement interval with the protrusion pitch P, which is the arrangement interval of the first and second protrusions.
When the polarity arrangement states of the permanent magnets are the same in the first and second mover teeth, the tooth pitch Pt, which is an arrangement interval of the first and second mover teeth, is equal to (2n-1) of the salient pitch P. An elevator linear motor, characterized in that formed of a ship (where n is a natural number of 2 or more).
The method of claim 1,
When the polarity arrangement states of the permanent magnets are different from each other in the first and second mover teeth, the tooth pitch Pt is formed by (2n) times (where n is a natural number of 2 or more) of the protrusion pitch P. Elevator linear motor, characterized in that the.
The method of claim 2,
If the permanent magnets adjacent to the second mover teeth among the permanent magnets mounted on the first mover teeth and the permanent magnets adjacent to the first mover teeth among the permanent magnets mounted on the second mover teeth are the same polarity, the corresponding permanent magnets The arrangement interval therebetween is a linear motor for elevators, characterized in that it is formed by (2 m-1) times (where m is a natural number) of the salient pole pitch (P).
The method of claim 3, wherein
If the permanent magnets attached to the first mover teeth and the permanent magnets adjacent to the second mover teeth and the permanent magnets attached to the second mover teeth and the permanent magnets adjacent to the first mover teeth have different polarities, the permanent magnets are different. The arrangement interval between the elevator linear motor for elevator characterized in that it is formed by (2m) times (where m is a natural number) of the pole pitch (P).
An elevator linear motor including a stator module installed along a driving direction of an elevator car, and a mover module coupled to an elevator car so as to face each other on both sides of the stator module.
The stator module is installed in a form arranged in a line spaced apart so that a plurality of stators have a gap,
Each of the plurality of stators
A center field iron core disposed long along the driving direction of the elevator car, and first and second salient poles protrudingly arranged to be offset from each other at equal intervals on both sides of the center field iron core;
The mover module
Two armatures disposed opposite to each other on both sides of the stator module and having an intermediate slot formed in an intermediate region and protruding toward the stator module in both regions around the intermediate slot. Iron core;
A magnet module mounted to the first and second mover teeth of the two armature iron cores so as to face each other; And
An armature winding wound around the armature core through the intermediate slot,
The magnet module has a permanent magnet having the same polarity as each other, and a protrusion arranged in an area adjacent to the permanent magnet alternates with each other at an arrangement interval equal to the protrusion pitch P, which is an arrangement interval of the first and second protrusions. It is formed in the form of being placed,
When the arrangement state of the permanent magnet and the salient poles is the same in the first and the second mover teeth, the tooth pitch Pt, which is the arrangement interval of the first and the second mover teeth, is equal to (2n−) of the salient pitch P. 1) A linear motor for an elevator, characterized in that formed by a ship (where n is a natural number of 2 or more).
The method of claim 5,
When the alternating arrangement state of the permanent magnet and the salient poles in the first and second mover teeth is different from each other, the tooth pitch Pt is (2n) times the salient pitch P, where n is a natural number of 2 or more. Elevator linear motor, characterized in that formed by.
The method of claim 6,
The permanent magnet mounted to the first mover tooth and the object closest to the second mover tooth among the salient poles, and the permanent magnet mounted to the second mover tooth and the object closest to the first mover tooth among the salient poles are all permanent magnets. Or if the salient poles are the same, the interval between the permanent magnets or the salient poles is formed at (2 m-1) times (where m is a natural number) of the salient pitch (P).
The method of claim 7, wherein
Any one of the permanent magnets mounted on the first mover teeth and the poles closest to the second mover teeth, and the one closest to the first mover teeth, the permanent magnets mounted on the second mover teeth and the poles If the permanent magnet is different from each other by the salient poles, the arrangement interval between the permanent magnet and the salient poles is formed by (2 m) times (where m is a natural number) of the salient pitch P, where m is a natural number. .
The method according to any one of claims 1 to 8,
And the first and second mover teeth are formed to have the same width protruding toward the stator module.

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