TW201931731A - A motor frame with a converging trough - Google Patents

Abstract

A motor frame with a converging trough is disclosed in the present invention. The motor frame with a converging trough is utilized to dispose on a rotor and a stator, and includes a frame body. The frame body expends in an axial direction, includes an inner surface, an outer surface and a disposing space defined by the inner surface, and has a converging trough is configured to converge waste liquid which is formed in the disposing space. The converging trough extends from a first side to a second side in the axial direction and the depth of the converging trough increases by degrees from the first side to the second side. The second side has a drainage hole which is utilized to drain away waste liquid.

Description

Motor frame with collection chute

The present invention relates to a motor frame, and more particularly to a motor frame having a collection chute.

A motor is a kind of motor that converts electrical energy into mechanical kinetic energy by electromagnetic induction, and most of it has been widely used in daily life, such as various fans. The motor usually includes a stator structure and a rotor structure, and the current is turned on in the stator windings in the stator structure, thereby generating a current magnetic effect, but in the process of conducting, the current will be obtained due to the resistance of the coil of the stator winding itself. Loss may be copper loss or iron loss, which in turn generates excess heat. This heat can damage the components inside the motor, which in turn affects the normal operation of the motor.

In addition to the extra heat energy that affects the operation of the motor, foreign matter such as dust or liquid in the environment may enter the motor core component housing space inside the motor frame through the air gap (hereinafter referred to as "accommodation space"). After long-term operation, the motor is easily caused. The internal motor core components are rusted, damaged, and even cause corrosion, which in turn leads to a decrease in the service life of the motor and seriously affects the safety and performance of the motor operation.

After the liquid enters the accommodating space of the motor core component, it does not substantially help the motor core component, even if it is harmful to the motor core component, it needs to be discharged from the motor core component accommodating space, so the following will be formed in the motor core component. A liquid in a space is defined as a waste liquid. The source of the waste liquid may be that the lubricating oil applied to the core component of the motor leaks into the accommodating space of the motor core component, or the air in the accommodating space may be condensed into water droplets, or the liquid of the external environment may be separated from the gap of the motor frame. Enter the accommodating space.

Generally speaking, during the operation of the motor core component, the temperature will gradually rise, and then the heat energy will be released. The heat will cause the air in the accommodating space to be heated, thereby expanding the volume of the air. When the motor core assembly is stopped, the temperature is lowered, and the volume of air in the accommodating space is also reduced. At this time, the air outside the motor frame is easily entrained with moisture into the accommodating space to form a waste liquid. The hot air in the accommodating space may also be condensed into a waste liquid.

Please refer to the first figure and the second figure together, wherein the first figure shows a schematic view of the prior art motor frame; the second figure shows the A-A cross-sectional view of the first figure. A motor frame PA1 includes a frame body PA11, a plurality of heat dissipation fins PA12 (only one of which is shown) and a stand structure PA13.

The frame body PA11 extends along an extending direction PAD parallel to a central axis PAX, and has an inner peripheral surface PA111 and an outer peripheral surface PA112. The inner peripheral surface PA111 surrounds a motor core component accommodating space (hereinafter referred to as " The accommodating space") PAS, the plurality of heat dissipating fins PA12 protrude from the outer peripheral surface PA112 toward the inner peripheral surface PA111, and extend along the extending side Extend to the PAD. The erecting structure PA13 is disposed on the frame body PA11 for fixing and erecting the frame body PA11.

In order to discharge one of the waste liquids PAL in the accommodating space PAS, the frame body PA11 has a liquid discharge hole PA14 formed from the inner circumferential surface PA111 toward the outer circumferential surface PA112. However, the inner circumferential surface PA111 is not necessarily flat, so the waste liquid PAL is not necessarily It flows to the liquid discharge hole PA14 and flows out from the liquid discharge hole PA14. In order to solve the above problem, the frame body PA11 is further provided with a plurality of liquid discharge holes PA14 (the figure only shows the two liquid discharge holes PA14 and PA14a as an illustration), but the above method has no significant effect on discharging the waste liquid PAL, and is discarded. The liquid PAL may still be accumulated in the position where the non-liquid discharge holes PA14 and PA14a are located due to the unevenness of the inner peripheral surface PA111, and thus cannot be discharged from the liquid discharge holes PA14 and PA14a.

In addition, the frame body PA11 may open a larger number of liquid discharge holes PA14 in order to solve the above problem. However, opening a larger number of liquid discharge holes PA14 also increases the path of the external environment liquid into the accommodation space PAS, which greatly enhances the outside world. The probability that the liquid of the environment enters the accommodating space PAS to form a waste liquid. If the liquid discharge hole PA14 is used with a drain plug (not shown), a plurality of automatic drain plugs will increase the cost, and a plurality of manual drain plugs will increase the labor cost timing to disassemble the manual drain plug. The waste liquid is discharged, and after the waste liquid is discharged, the manual drain plug is fixed back to the liquid discharge hole PA14 to block the entry of the liquid in the external environment, which is also relatively time consuming and process.

In view of the prior art, the plurality of liquid discharge holes are opened in the frame body, and the waste liquid is not effectively discharged from the accommodating space, and the probability of forming the waste liquid may be increased, thereby affecting the safety of the operation of the motor core component. Performance and service life.

The present invention solves the problems of the prior art, and the necessary technical means is to provide a motor frame having a collecting chute for arranging on a motor core assembly and including a frame body.

The frame system extends along a direction parallel to a central axis, and has an inner circumferential surface, an outer circumferential surface and a motor core component accommodating space surrounded by the inner circumferential surface, and the inner circumferential surface faces the outer circumferential surface. A collecting chute is provided to collect one of the waste liquids formed in the accommodating space of the motor core assembly.

The collecting chute extends from the end of the first slot in the extending direction to a second slot end, the second slot end has a liquid discharge hole, and the depth of the collecting chute is from the end of the first slot. Increasing to the second groove end portion in the extending direction, whereby the waste liquid is collected to the second groove end portion, and then discharged through the liquid discharge hole.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the motor frame having the collecting chute further comprises a plurality of heat dissipating fins, and the heat dissipating fins are convex from the outer peripheral surface toward the inner peripheral surface. Extend.

Based on the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to tilt the heat dissipating fins in the motor frame having the collecting chute to the central axis.

Based on the above necessary technical means, the present invention One of the subsidiary techniques is to make the fins in the motor frame with the collecting chute perpendicular to the central axis.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the motor frame having the collecting chute further comprises a standing structure, and the above-mentioned standing structure is disposed on the frame body for fixing and supporting Frame body.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the motor frame having the collecting chute further comprises a blocking element, and the blocking element has an element body closely matched with the liquid discharge hole, Thereby, the blocking element is detachably fixed to the liquid discharge hole.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the blocking element in the motor frame with the collecting chute into an automatic drain plug, a waterproof bolt and a manual drain plug. One of them.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the collecting chute in the motor frame having the collecting chute has a groove bottom edge, and the groove bottom edge is from the first groove end Extending along a bottom edge extending direction to the second groove end portion, the bottom edge extending direction has an angle with the extending direction, and the angle ranges from 1 degree to 10 degrees.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the angle between the motor frames having the collecting chutes 2 degrees.

According to the above description, the present invention provides a collection chute The motor frame has a collecting chute extending from the inner circumferential surface toward the outer circumferential surface of the frame body, thereby collecting the waste liquid formed in the accommodating space of the motor core assembly, and the collecting chute extends from the end of the first groove in the extending direction to a second groove end portion, and the depth of the collecting chute is increased from the first groove end portion in the extending direction to the second groove end portion, thereby collecting the waste liquid to the second groove end portion, and opening the second groove portion The liquid discharge hole at the end discharges the waste liquid. Thereby, the related problems arising from the fact that the plurality of liquid discharge holes are opened in the frame body and the waste liquid cannot be effectively discharged from the accommodating space are solved.

PA1‧‧‧ motor frame

PA11‧‧‧Frame Ontology

PA111‧‧‧ inner circumference

PA112‧‧‧ outer perimeter

PA12‧‧‧ Heat sink fins

PA13‧‧‧ erect structure

PA14, PA14a‧‧‧ liquid discharge hole

PAD‧‧‧ extending direction

PAL‧‧‧Waste liquid

PAS‧‧‧ motor core component housing space

PAX‧‧‧ central axis

1‧‧‧Motor frame with chutes

11‧‧‧Frame Ontology

111‧‧‧ inner circumference

112‧‧‧ outer perimeter

1111‧‧‧ collection chute

1112‧‧‧Liquid discharge hole

1113‧‧‧ bottom edge

12‧‧‧ Heat sink fins

13‧‧‧Architecture

14‧‧‧ Core component support components

15‧‧‧blocking elements

151‧‧‧Out-of-component body

152‧‧‧Flexible components

153‧‧‧ In-component ontology

D‧‧‧ Extension direction

D1‧‧‧Counterclock direction

D2‧‧‧ clockwise direction

D3‧‧‧Bottom edge extension

L, L1, L2‧‧‧ waste liquid

LA‧‧‧left half

P1‧‧‧ first slot end

P2‧‧‧ second slot end

RA‧‧‧Right half

S‧‧‧Motor core component housing space

T‧‧‧Liquid flow channel

X‧‧‧ central axis

Xr‧‧‧ reference line

1 is a perspective view showing a motor frame of the prior art; a second view showing a cross-sectional view of the AA of the first figure; and a third view showing a three-dimensional structure of the motor frame having the chute provided by the preferred embodiment of the present invention. 4 is a perspective view showing another perspective view of a motor frame having a collecting chute provided by a preferred embodiment of the present invention; the fifth drawing is a BB cross-sectional view of the third drawing; 3 is a schematic view of a CC section; the seventh diagram shows a partial enlarged view of the area shown by the circle E in the sixth figure; and the seventh A diagram shows the operation of the blocking element in the area shown in the seventh figure.

Specific embodiments of the present invention will be described in more detail below with reference to the drawings. Advantages and features of the present invention will be apparent from the description and appended claims. It should be noted that the drawings are all in a very simplified form and both use non-precise proportions, and are only for convenience and clarity to assist the purpose of the embodiments of the present invention.

Please refer to the third and fourth figures, wherein the third figure shows a schematic view of a motor frame with a collecting chute provided by a preferred embodiment of the present invention; the fourth figure shows the preferred embodiment of the present invention. A perspective view of another view of the motor frame with the chutes. As shown in the figure, a motor frame (hereinafter referred to as "motor frame") 1 having a collecting chute is sleeved on a motor core assembly (not shown), and includes a frame body 11 and a plurality of heat sink fins. Sheet 12 (the figure only shows one of them) and a stand-up structure 13.

The frame body 11 extends along a direction D extending parallel to a central axis X and has an inner circumferential surface 111 and an outer circumferential surface 112. The inner peripheral surface 111 defines a motor core component accommodating space (hereinafter referred to as "accommodation space") S for accommodating the motor core assembly. The frame body 11 defines a collecting chute 1111 from the inner circumferential surface 111 toward the outer circumferential surface 112, thereby collecting a waste liquid L formed in the accommodating space S (indicated in the sixth drawing). The collection chute 1111 defines a liquid discharge hole 1112 for discharging the waste liquid L from the accommodation space S.

The heat dissipating fins 12 project outwardly from the outer peripheral surface 112 toward the inner peripheral surface 111. In the preferred embodiment, the heat dissipating fins 12 The two are parallel to each other and perpendicular to the central axis X. Therefore, the liquid of the external environment (not shown), usually water droplets, such as falling on the junction of the heat dissipation fins 12 and the frame body 11, will follow the frame body. The outer peripheral surface 112 of the 11 is slid down and does not accumulate in the frame body 11. Compared with the prior art heat sink fin PA12 parallel to the central axis PAX, the liquid of the external environment may accumulate at the junction of the heat sink fin PA12 and the frame body PA11, thereby increasing the liquid entering the accommodating space PAS to form the waste liquid PAL. The chance.

In other embodiments of the invention, the heat sink fins 12 may be inclined to the central axis X. From a geometric point of view, there are only two kinds of relations between a plane and a straight line, one is that the plane is parallel to the straight line, and the other is that the plane intersects the straight line at one point, wherein the plane and the straight line are perpendicular to each other as a special case of intersecting at one point. The other embodiments of the present invention, that is, the plane formed by each of the heat dissipation fins 12 (not shown) intersects with the virtual axis of the central axis X at a point, and the plane formed by each of the heat dissipation fins 12 It is not perpendicular to the central axis X, that is, the heat dissipation fins 12 are inclined to the central axis X. In the above case, the liquid of the external environment will slide down from the frame body 11 along the oblique direction of the heat dissipation fins 12, and will not accumulate in the frame body 11, thereby reducing the possibility that the liquid enters the accommodation space S to form the waste liquid L. Sex.

The erecting structure 13 is disposed on the frame body 11 for fixing and erecting the frame body 11, which is not related to the implementation of the preferred embodiment of the present invention, and therefore will not be described herein.

Please refer to the fifth and sixth figures together, wherein the fifth figure shows the B-B cross-sectional view of the third figure; the sixth figure shows the third figure. A schematic view of the C-C section of the figure. A reference line Xr divides the motor frame 1 into a left half LA and a right half RA. The reference line Xr is here a straight line due to the viewing angle relationship, and is actually a plane containing both the reference line Xr and the central axis X.

The waste liquid L1 is formed on the inner peripheral surface 111 of the left half portion LA of the motor frame 1, and flows along the inner peripheral surface 111 in a counterclockwise direction D1 to the collecting chute 1111. Of course, the waste liquid L1 is not directly excluded. The inner peripheral surface 111 is dropped to the collecting chute 1111; similarly, the waste liquid L2 is formed on the inner peripheral surface 111 of the right half RA of the motor frame 1, and will flow along the inner peripheral surface 111 and along a clockwise direction D2. The collecting chute 1111 may also be directly dropped to the collecting chute 1111. As shown, the waste liquid L (ie, the waste liquids L1 and L2) formed in the accommodating space S will be collected into the collecting chute 1111. Whether it flows along the inner circumferential surface 111 and in the clockwise direction D2 or the counterclockwise direction D1, or directly from the inner circumferential surface 111 to the collecting chute 1111.

The liquid (not shown) of the outer peripheral surface 112 of the left half LA and the right half RA also flows in the counterclockwise direction D1 and the clockwise direction D2, respectively, without accumulating on the outer peripheral surface 112 to increase the entering capacity. The space S is set to form a probability of the waste liquid L.

The collecting chute 1111 extends from a first groove end portion P1 in the extending direction D to a second groove end portion P2, and the depth of the collecting chute 1111 is increased from the first groove end portion P1 in the extending direction D to the first The two-slot end portion P2 is used to collect the waste liquid L flowing or dropped to the collecting chute 1111 to the second groove end portion P2. The second groove end portion P2 is provided with a liquid discharge hole 1112 through which the waste liquid L collected to the second groove end portion P2 is discharged from the liquid discharge hole 1112.

The collecting chute 1111 has a groove bottom edge 1113 extending from the first groove end portion P1 along a bottom edge extending direction D3 to the second groove end portion P2, and the bottom edge extending direction D3 and the extending direction D are sandwiched There is an angle. In the preferred embodiment, the angle is 2 degrees, but not limited thereto. In other embodiments of the invention, the angle ranges from 1 to 10 degrees. It should be noted that the bottom edge 1113 of the groove may be a flat surface or a straight line. When the cross section of the collecting chute 1111 is a rectangle, a wedge shape, a trapezoidal shape or the like in the cross section of the second groove end portion P2, the groove bottom edge 1113 is A plane; when the cross section of the collecting chute 1111 at the second groove end portion P2 is a triangle and a sector, the bottom edge 1113 of the groove is a straight line. If the cross section has other irregular shapes, the lowest point of the cross section determines whether the bottom edge 1113 of the groove is a plane or a straight line.

In addition, the bottom edge extending direction D3 of the groove bottom edge 1113 is not limited to a linear oblique line, and may extend from the second groove end portion P2 along the one-digit increasing curve to the first groove end portion P1. Preferably, the second slot end P2 extends along an exponentially increasing curve to the first slot end P1, and the slope of the exponentially increasing curve closer to the first slot end P1 is larger because it is collected to the first slot end. The waste liquid L of P1 is far from the liquid discharge hole 1112, so the groove bottom edge 1113 having a large slope is required to make the waste liquid L flow more easily to the second groove end portion P2, and the waste liquid L is not caused by the small slope. The viscous force of itself accumulates at the first groove end P1, and cannot flow to the second groove end P2 to achieve the effect of pooling.

It should be noted that, in the preferred embodiment of the present invention, the motor frame 1 further includes a core component supporting component 14 disposed on the collecting chute 1111 for assisting the mounting of the motor core component. But the core component support component 14 does not affect The collecting chute 1111 collects the waste liquid L, and the waste liquid L still flows from the first groove end portion P1 to the second groove end portion P2.

Please refer to the seventh figure and the seventh figure A, wherein the seventh figure shows a partial enlarged view of the area shown by the circle E in the sixth figure; the seventh figure shows the operation diagram of the blocking element of the area shown in the seventh figure. . The motor frame 1 (labeled in the third to sixth figures) further includes a blocking member 15. In the preferred embodiment, the blocking member 15 is an automatic drain plug, and the blocking member 15 includes an outer member body 151, an elastic member 152 and an inner member body 153.

The component outer body 151 defines a liquid flow path T and is closely matched with the liquid discharge hole 1112, thereby being detachably fixed to the liquid discharge hole 1112, and prevents the liquid of the external environment from entering the accommodation space S to form the waste liquid L. The elastic member 152 is disposed in the liquid flow path T. In the preferred embodiment, the elastic member 152 is a spring. The component inner body 153 sequentially passes the elastic member 152 and the liquid flow path T, and isolates the liquid flow path T from the external environment by the elastic member 152.

When the waste liquid L flows to the liquid discharge hole 1112 of the second groove end portion P2, since the weight of the waste liquid L is small, the blocking member 15 does not operate, and the waste liquid L is accumulated in the liquid discharge hole 1112. When the amount of waste liquid L accumulated in the liquid discharge hole 1112 is increased and the weight is also increased, the weight of the waste liquid L causes the inner member body 153 to compress the elastic member 152 and move downward, at this time, the liquid flow path T It will communicate with the external environment, and the waste liquid L can be discharged from the liquid discharge hole 1112 to the external environment along the liquid flow path T. As the waste liquid L is discharged to the external environment, the waste accumulated in the liquid discharge hole 1112 The weight of the liquid L will become smaller, and the restoring force of the elastic member 152 will lift the inner body 153 upward, so that the inner body 153 of the element again isolates the liquid flow path T from the external environment. Therefore, in the prior art, the problem that the frame body PA11 has a plurality of liquid discharge holes PA14 is still unable to effectively discharge the waste liquid PAL.

In other embodiments of the invention, a manual drain plug or a waterproof bolt may also be employed as the blocking element 15. When the manual drain plug is used, it is necessary to dispatch manpower to remove the manual drain plug at a fixed time. After the waste liquid L is discharged, the manual drain plug is fixed to the liquid discharge hole 1112, although The automatic drain plug is relatively labor-intensive and time-consuming, but compared with the prior art, it is required to fix a plurality of manual drain plugs to the plurality of liquid discharge holes PA14, and the working hours and processes of the manual drain plug are used in the present invention. Both are significantly reduced, and the effect of discharging the waste liquid L is also better.

In summary, the motor frame with the collecting chute provided by the present invention has a collecting chute extending from the inner circumferential surface toward the outer circumferential surface of the frame body, and the depth of the collecting chute is increased from the end of the first groove along the extending direction. To the end of the second groove, and at the end of the second groove, a liquid discharge hole is opened.

Compared with the prior art, the motor frame with the collecting chute provided by the present invention is easy to collect into the collecting chute due to the waste liquid formed in the accommodating space of the motor core assembly, and flows from the first groove end to the second. The end of the groove is discharged through the liquid discharge hole, which solves the prior art, the frame body opens a plurality of liquid discharge holes, but the inner peripheral surface may be uneven, so that the liquid cannot flow to the liquid discharge hole and is discharged from the liquid discharge hole. , resulting in poor drainage, affecting the core components of the motor Problems such as the operation.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

Claims (9)

A motor frame having a collecting chute for arranging a motor core assembly, comprising: a frame body extending along a direction parallel to a central axis, having an inner circumferential surface, an outer circumferential surface and a a motor core assembly accommodating space formed by the inner circumferential surface, and a collecting chute is formed from the inner circumferential surface toward the outer circumferential surface, thereby collecting a waste liquid formed in the accommodating space of the motor core assembly; The collecting chute extends from the end of the first slot along the extending direction to a second slot end, the second slot end defines a liquid discharge hole, and the depth of the collecting chute is from the The first groove end portion is incrementally extended to the second groove end portion in the extending direction, whereby the waste liquid is collected to the second groove end portion and discharged through the liquid discharge hole. The motor frame having the collecting chute as described in claim 1 further includes a plurality of heat dissipating fins protruding from the outer peripheral surface toward the inner peripheral surface. A motor frame having a collecting chute as described in claim 2, wherein the heat dissipating fins are inclined to the central axis. A motor frame having a collecting chute as described in claim 2, wherein the heat dissipating fins are perpendicular to the central axis. As shown in the first paragraph of the patent application, there is a collection chute The motor frame further includes a vertical structure, the standing structure is disposed on the frame body for fixing and supporting the frame body. A motor frame having a collecting chute as described in claim 1, further comprising a blocking member having an element body that is tightly fitted with the liquid discharge hole, thereby detachably securing the blocking member Located in the liquid discharge hole. A motor frame having a collecting chute as described in claim 1, wherein the blocking element is one of an automatic drain plug, a waterproof bolt, and a manual drain plug. The motor frame with a collecting chute as described in claim 1, wherein the collecting chute has a groove bottom edge extending from a first groove end portion along a bottom edge extending direction To the end of the second groove, the bottom edge extends in an angle with the extending direction, and the angle ranges from 1 degree to 10 degrees. A motor frame having a collecting chute as described in claim 8 wherein the angle is 2 degrees.