CN111541341A

CN111541341A - Heat dissipation motor

Info

Publication number: CN111541341A
Application number: CN202010344352.4A
Authority: CN
Inventors: 黄尉欢
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-08-14

Abstract

The invention discloses a heat dissipation motor, and belongs to the technical field of motor equipment. A flow guide cavity is arranged at the upper part in the machine body, turbine fan blades fixedly connected to a rotor rotating shaft are arranged in the flow guide cavity, the upper end of the flow guide cavity is communicated with a plurality of cooling pipes, the other ends of the cooling pipes are communicated with a heat exchanger at the bottom of the machine body, a plurality of heat conduction pipes are arranged on the inner side wall of the machine body, the upper ends of the heat conduction pipes are communicated with the bottom of the flow guide cavity, the lower, and each heat conduction pipe is sleeved with a heat conduction block, the heat conduction pipes are in contact with the stator winding more comprehensively through the heat conduction blocks, so that the heat on the stator winding is conducted into the heat conduction pipes to the maximum extent, taken away along with the flow of the cooling liquid and flows to the heat exchanger for cooling, the cooled cooling liquid can be recycled, and no matter the motor rotates forwards and backwards, therefore, the flow direction of the cooling liquid is changed, the cooling liquid absorbing heat can flow through the heat exchanger to carry out heat exchange and cooling and then be normally recycled, and the heat dissipation effect is not influenced by the steering of the motor.

Description

Heat dissipation motor

Technical Field

The invention belongs to the technical field of motor equipment, and particularly relates to a heat dissipation motor capable of improving the heat dissipation effect of the heat dissipation motor.

Background

A heat dissipation motor is a novel heat dissipation device. It mainly consists of an electromagnet winding or distributed stator winding for generating magnetic field, a rotary armature or rotor and other accessories. Under the action of the rotating magnetic field of the stator winding, current passes through the armature squirrel-cage aluminum frame and is driven to rotate under the action of the magnetic field, and the heat dissipation effect is achieved.

As is well known, a motor can generate a large amount of heat when working, the motor can be overheated and halted if the heat is not conducted in time, and in order to solve the problem of the overheating and halting of the motor, the self-radiating motor with the self-radiating function is produced. The motor that commonly uses need fix the motor protecgulum and hou gai respectively on the motor host computer body with the screw in the installation, very loaded down with trivial details, and installation time is longer, and work efficiency is not high.

The existing motor shaft is exposed outside the machine shell, is easy to collide with and make the shaft eccentric in the transportation process, can cause certain damage to the motor, and occupies relatively more space in the storage process. The motor and the servo system thereof are widely applied to the fields of industrial driving, servo control and the like due to the advantages of small volume, high efficiency, good dynamic response characteristic and the like. When the frequency converter controls the motor to operate in a frequency conversion mode, the operating frequency of the motor changes at a frequency of 50 Hz or below, and the rotating speed of the motor corresponds to the frequency of the motor. The built-in radiator fan of motor, change along with the rotational speed change of motor, then the exhaust volume of motor also changes along with it, under the state of motor low frequency operation, the rotational speed of motor is lower, the rotational speed of cooling fan is also lower, lead to the heat dissipation capacity of motor to reduce, the temperature of motor rises, influence the life-span of motor, and cause the motor to damage easily, not only influence production, but also can produce certain maintenance cost, in the prior art, to the motor that burns out, generally start because main shaft resistance is too big or the electric current is too big, the start-up accumulates the heat to certain temperature in the twinkling of an eye and burns out the motor, and to the solution of the radiating mode of motor under the low frequency operation state, usually connect the fan in the motor outside, cool off the heat dissipation to the motor, its radiating effect is unsatisfactory, and cause great power consumption, occupation space and place.

The motor is an electromagnetic device which converts electric energy into power potential energy or transmits the power potential energy according to the electromagnetic induction law, the temperature influences the magnetic field intensity, the magnetic field intensity is influenced by the current, and the large current is easier to generate a large amount of heat, so that the larger the torque is, the larger the heat productivity of the motor is, and the larger the influence on the torque is. The invention of Chinese patent publication No. CN102594023A discloses a self-radiating motor, which comprises a shell, a stator, a rotor and a motor rotating shaft, wherein the shell is provided with an end cover, the outer side of the end cover is sleeved with a fan blade which draws air outwards from the inside of the shell, and the fan blade rotates along with the motor rotating shaft; and heat dissipation holes which are corresponding to the positions of the fan blades and are beneficial to air flowing out of the shell are formed in the end covers; therefore, the fan blades capable of exhausting air outwards from the inside of the shell are additionally arranged, so that air is actively exhausted from the inside of the motor. The heat dissipation of the prior motor mainly depends on conduction and radiation, and also depends on a water jacket and an external fan to forcibly dissipate heat, so that the prior motor has the defects of poor heat dissipation effect and low motor efficiency,

most of the existing large motors adopt an air cooling mode to achieve a heat dissipation effect, but most of heat is concentrated on a stator winding through which current passes, so that the heat is concentrated on the stator winding and a shell part which is fixedly contacted with the stator winding, a fan can only be installed along a central rotating shaft and is difficult to effectively dissipate heat, and the fan can only operate in a single direction to enable the internal heat to flow outwards, namely the large motors are not suitable for being used in motors which need to work in a forward and reverse mode.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the heat dissipation motor is provided aiming at the problems that the existing heat dissipation motor is poor in heat dissipation effect and is not suitable for being applied to a motor which works in forward and reverse rotation.

In order to solve the technical problems, the invention adopts the following technical scheme:

a heat dissipation motor comprises a machine body for bearing and protecting various parts, wherein a neutral shaft of the machine body is rotatably connected with a rotor rotating shaft, the upper end of the rotor rotating shaft is inserted into an end bearing fixedly connected right above the machine body, the lowest end of the rotor rotating shaft is inserted into a bottom bearing fixedly connected to the bottom end of the machine body, a rotor which is inserted is fixedly connected onto the rotor rotating shaft and positioned in a cavity inside the machine body, and a stator winding is arranged at the outer side end of the rotor; the outer side of the bottom of the machine body is fixedly connected with a heat exchanger, a disc-shaped flow guide cavity is arranged in the machine body and right above the rotor, the turbine fan blade is arranged at the center position in the flow guide cavity and is fixedly connected with a rotor rotating shaft penetrating through the center of the turbine fan blade, the top of the diversion cavity is provided with a plurality of cooling pipes communicated with the diversion cavity in a surrounding way, the cooling pipes penetrate through the machine body and extend to the part of the machine body to be attached and fixed on the outer side surface of the machine body, and the other end of each cooling pipe extending downwards is connected at a corresponding position on the side surface of the heat exchanger, the bottom of the flow guide cavity is provided with a plurality of heat conducting pipes communicated with the inside of the flow guide cavity in a surrounding way, the part of each heat conducting pipe extending downwards is embedded in the side wall of the inner cavity of the machine body, and the heat conduction pipe downwards penetrates through the bottom of the machine body and extends to one end of the outer side of the bottom of the machine body to be connected to the heat exchanger and communicated with the heat exchanger.

Preferably, the rotor shaft is provided with sealing sleeves which are fixedly connected with the centers of the top and the bottom of the flow guide cavity and protrude outwards, and the protruding parts of the upper sealing sleeve and the lower sealing sleeve slide respectively and are clamped into the groove sealing grooves corresponding to the protruding parts.

Preferably, the heat conduction blocks are sleeved outside the vertical section which is attached to and embedded in the inner side wall of the machine body, and one side of each heat conduction block, which faces the outer side face of the stator winding, is in a large-angle diffusion shape and is in contact and attachment with the stator winding.

Preferably, the length of the heat-conducting block is the same as that of the stator winding.

Preferably, the heat conduction block and the heat conduction pipe are made of heat conduction materials such as aluminum or copper.

Preferably, the heat conduction block can adopt an integral structure according to actual required conditions, so that the heat conduction block is completely attached and fixed on the outer side surface of the stator winding and wraps all the heat conduction pipes.

Preferably, the cooling pipe is made of a PVC material.

Preferably, the heat exchanger is a finned heat exchanger.

Preferably, the inner surface of the stator winding is in clearance fit with the outer surface of the rotor, and the outer side surface of the positioning winding is fixedly connected with the side wall of the inner cavity of the machine body.

Preferably, the flow guide cavity, the heat conduction pipe and the cooling pipe are filled with a coolant.

Compared with other methods, the method has the beneficial technical effects that:

a flow guide cavity is arranged at the upper position inside a machine body of the motor, a turbine fan blade fixedly connected to a rotor rotating shaft is arranged in the flow guide cavity, the upper end of the flow guide cavity is communicated with a plurality of cooling pipes, the other ends of the cooling pipes are communicated with a heat exchanger at the bottom of the machine body, a plurality of embedded heat conduction pipes are arranged on the inner side wall of the machine body, the upper ends of the heat conduction pipes are communicated with the bottom of the flow guide cavity, the lower ends of the heat conduction pipes are communicated with the heat exchanger, each heat conduction pipe is sleeved with a heat conduction block, one side, facing to a stator winding, of each guide block is attached to the stator winding, the heat conduction pipes can be more comprehensively contacted with the stator winding through the indirect connection of the heat conduction blocks, the heat on the stator winding is conducted into the heat conduction pipes to the maximization, the heat is taken, the turbine fan blades are enabled to rotate positively and negatively so as to drive the flow direction of the cooling liquid to change, the cooling liquid absorbing heat can flow through the heat exchanger to carry out heat exchange and cooling and then be normally recycled, and the heat dissipation effect is not affected by the steering of the motor.

Drawings

FIG. 1 is a schematic longitudinal sectional view of the entire apparatus of the present invention;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is a cross-sectional view taken in the transverse direction of FIGS. 1E-E;

FIG. 4 is an enlarged view of area B of FIG. 3;

1. a body; 101. a flow guide cavity; 102. a sealing groove; 2. a heat conducting pipe; 3. a cooling tube; 4. a heat exchanger; 5. a rotor shaft; 6. an end bearing; 7. a bottom bearing; 8. turbine blades; 9. a rotor; 10. a stator winding; 11. a heat conducting block; 12. and (5) sealing the sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The words "upper", "lower", "left" and "right" when used herein are merely intended to designate corresponding upper, lower, left and right directions in the drawings, and do not limit the structure thereof.

As shown in fig. 1, the heat dissipation motor includes a machine body 1 for carrying and protecting each component, a rotor rotating shaft 5 is rotatably connected to a neutral axis position of the machine body 1, an upper end of the rotor rotating shaft 5 is inserted into an end bearing 6 fixedly connected right above the machine body 1, a lowermost end of the rotor rotating shaft 5 is inserted into a bottom bearing 7 fixedly connected to a bottom end of the machine body 1, a rotor 9 inserted is fixedly connected to the rotor rotating shaft 5 and located at a cavity position inside the machine body 1, and a stator winding 10 is provided at an outer end of the rotor 9, which are motor structures in the prior art, and therefore detailed description is omitted; the bottom outer side position of the machine body 1 is fixedly connected with a heat exchanger 4 for cooling heat-absorbing cooling liquid and facilitating subsequent circulating reflux reuse, a disc-shaped flow guide cavity 101 is arranged in the machine body 1 and at a position right above a rotor 9, a turbine blade 8 is arranged at a central position in the flow guide cavity 101, the turbine blade 8 is fixedly connected with a rotor rotating shaft 5 penetrating through the center of the turbine blade, so that the rotor rotating shaft 5 rotates to drive the turbine blade 8 to rotate, the cooling liquid in the flow guide cavity 101 is driven to flow from top to bottom or from bottom to top, that is, the cooling liquid is driven to flow circularly, a plurality of cooling pipes 3 communicated with the flow guide cavity 101 are arranged at the top of the flow guide cavity 101 in a surrounding manner, the cooling pipes 3 penetrate through the machine body 1 and extend to the part of the machine body 1 and are attached to the outer side surface of the machine body 1, and the other end of each cooling pipe 3 extending downwards is connected, the bottom of the diversion cavity 101 is provided with a plurality of heat conduction pipes 2 which are communicated with the inside of the diversion cavity in a surrounding manner, the downward extending part of each heat conduction pipe 2 is embedded in the side wall of the inner cavity of the machine body 1, and the heat conduction pipes 2 downwards penetrate through the bottom of the machine body 1 and extend to the outer side end of the bottom of the machine body 1 to be connected to the heat exchanger 4 to be communicated with the heat exchanger.

As shown in fig. 2, the sealing sleeves 12 protruding outward from the middle are respectively fixedly connected to the rotor shaft 5 and located at the center of the top and the bottom of the flow guide cavity 101, and the protruding portions of the upper and lower sealing sleeves 12 are respectively slidably inserted into the groove sealing grooves 102 corresponding thereto, so that the flow guide cavity 101 can be sealed to prevent the internal cooling liquid from leaking.

As shown in fig. 3 and 4, the heat conducting blocks 11 are sleeved on the vertical sections of the heat conducting pipes 2 attached to and embedded in the inner side wall of the machine body 1, and one side of each heat conducting block 11 facing the outer side surface of the stator winding 10 is in a large-angle diffusion shape and is in contact and attached with the stator winding 10, so that heat on the stator winding 10 can be maximally conducted to the heat conducting pipe 2 in the middle through the heat conducting blocks 11, and then the heat is absorbed and taken away by the cooling liquid flowing inside, thereby achieving the effects of heat conduction and heat dissipation.

The length of the heat conducting block 11 is the same as that of the stator winding 10, so that the contact area with the stator winding 10 can be increased, namely, the heat conducting effect is improved.

Wherein the heat conduction block 11 and the heat conduction pipe 2 are made of a heat conductive material such as aluminum or copper, so that heat can be rapidly diffused for the first time.

The heat conducting block 11 can adopt an integral structure according to actual needs, so that the heat conducting block 11 is completely attached and fixed on the outer side surface of the stator winding 10, and wraps all the heat conducting pipes 2, and the heat conducting effect can be improved under the condition of improving the cost.

The cooling pipe 3 is made of PVC material, which can reduce cost and only play a role of flow guiding, the difference of the materials has little influence on the whole heat dissipation, and the poor heat conductivity can prevent the heat of the cooling liquid absorbing heat from being transferred to the shell of the machine body 1 again when the cooling liquid passes through.

Wherein the heat exchanger 4 adopts a finned heat exchanger.

The inner surface of the stator winding 10 is in clearance fit with the outer surface of the rotor 9, and the outer side surface of the positioning winding 10 is fixedly connected with the side wall of the inner cavity of the machine body 1.

Wherein, the diversion cavity 101, the heat conduction pipe 2 and the cooling pipe 3 are filled with coolant, the cost is low and the heat conduction effect is excellent.

The specific working process of the device comprises the following steps:

when the motor is started and operates in the forward direction, the rotor rotating shaft 5 rotates to drive the turbine fan blades 8 to rotate, the turbine fan blades 8 rotate to drive the cooling liquid in the diversion cavity 101 to flow from top to bottom, so that the cooling liquid in the heat conduction pipes 2 flows downwards, heat on the stator winding 10 is conducted to the heat conduction pipes 2 through the heat conduction blocks 11 which are in contact with the heat conduction blocks, the heat flows to the heat exchanger 4 at the bottom along with the driving of the flowing cooling liquid, the heat exchanger 4 carries out heat dissipation and cooling on the cooling liquid with the heat, the cooled cooling liquid flows back to the diversion cavity 101 through the cooling pipes 3 and continues to flow from top to bottom, the cooling liquid circulates in a reciprocating mode to achieve the effects of heat conduction and heat dissipation, the turbine fan blades 8 are driven to rotate reversely when the motor rotates reversely, so that the cooling liquid flows from bottom to top, the cooling liquid with the heat in the heat conduction pipes 2 flows to the plurality of cooling pipes 3 through the, the cooled cooling liquid flows back to the heat conduction pipe 2 again to conduct heat, and the operation can be normally carried out in a circulating reciprocating mode.

The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.

Claims

1. A heat dissipation motor comprises a machine body (1) for bearing and protecting each part, wherein a rotor rotating shaft (5) is rotatably connected to the position of a neutral shaft of the machine body (1), the upper end of the rotor rotating shaft (5) is inserted into an end bearing (6) fixedly connected to the position right above the machine body (1), the lowest end of the rotor rotating shaft (5) is inserted into a bottom bearing (7) fixedly connected to the bottom end of the machine body (1), a rotor (9) which is inserted is fixedly connected to the position, located in a cavity inside the machine body (1), of the rotor rotating shaft (5), a stator winding (10) is arranged at the outer side end of the rotor (9), the heat dissipation motor is characterized in that a heat exchanger (4) is fixedly connected to the position on the outer side of the bottom of the machine body (1), a disc-shaped flow guide cavity (101) is arranged in the machine body (1) and located right above the, a turbine fan blade (8) is arranged at the center position in the diversion cavity (101), the turbine fan blade (8) is fixedly connected with a rotor rotating shaft (5) penetrating through the center of the turbine fan blade, the top of the diversion cavity (101) is provided with a plurality of cooling pipes (3) communicated with the diversion cavity in a surrounding way, the cooling pipe (3) penetrates through the machine body (1) and extends to the part of the machine body (1) to be attached and fixed on the outer side surface of the machine body (1), and the other end of each cooling pipe (3) extending downwards is connected at the corresponding position of the side surface of the heat exchanger (4), the bottom of the diversion cavity (101) is provided with a plurality of heat conduction pipes (2) which are communicated with the interior of the diversion cavity in a surrounding way, the downward extending part of each heat conducting pipe (2) is embedded in the side wall of the inner cavity of the machine body (1), and the heat conduction pipe (2) downwards penetrates through the bottom of the machine body (1) and extends to the outer side end of the bottom of the machine body (1), and one end of the heat conduction pipe is connected to the heat exchanger (4) and communicated with the heat exchanger.

2. The heat dissipation motor according to claim 1, wherein the rotor shaft (5) is fixedly connected with middle convex sealing sleeves (12) at the center of the top and the bottom of the flow guide cavity (101), and the convex parts of the upper and lower sealing sleeves (12) are respectively clamped into the corresponding groove sealing grooves (102) in a sliding manner.

3. A heat-dissipating electric machine according to claim 1, characterized in that the heat-conducting pipes (2) are externally sheathed with heat-conducting blocks (11) at the vertical section attached to the inner side wall of the machine body (1), and each heat-conducting block (11) is extended at a large angle towards the outer side of the stator winding (10) and is in contact with the stator winding (10).

4. A heat-dissipating electric machine according to claim 3, characterized in that the length of the heat-conducting block (11) is the same as the stator winding (10).

5. A heat-dissipating electric machine according to claim 3, characterized in that the heat-conducting block (11) and the heat-conducting pipe (2) are made of a heat-conducting material such as aluminum or copper.

6. A heat-dissipating electric motor according to claim 3, wherein the heat-conducting block (11) is of an integral structure according to actual requirements, so that the heat-conducting block (11) is completely attached and fixed on the outer side of the stator winding (10) and wraps all the heat-conducting pipes (2).

7. A heat-dissipating electric machine according to claim 1, characterized in that the cooling tube (3) is made of PVC material.

8. A heat-dissipating electric machine according to claim 1, characterized in that the heat exchanger (4) is a finned heat exchanger.

9. A heat-dissipating electric machine according to claim 1, characterized in that the inner surface of the stator winding (10) is in clearance fit with the outer surface of the rotor (9) and the outer surface of the positioning winding (10) is fixedly connected to the side wall of the inner cavity of the machine body (1).

10. A heat-dissipating electric machine according to claim 1, characterized in that the flow-guiding cavities (101), the heat-conducting pipes (2) and the cooling pipes (3) are filled with a coolant.