阅读说明：本技术 一种减缓热膨胀力的开关磁阻电动机 (Switch reluctance motor capable of reducing thermal expansion force ) 是由 曹雪贞 于 2020-12-04 设计创作，主要内容包括：本发明提供一种减缓热膨胀力的开关磁阻电动机,涉及开关磁阻电动机技术领域,解决了目前开关磁阻电动机当运行时间过长,电动机壳体内部受热压力膨胀,但电动机壳体内部受热压力膨胀时无法快速排出电动机壳体内部,使极易因膨胀力无法快速排出而导致电动机壳体受压致损情况的发生的问题。一种减缓热膨胀力的开关磁阻电动机,包括电动机壳体,所述电动机壳体内周面所开设的圆形凹槽内均粘接密封一张圆形橡胶密封薄片A。电动机壳体内部受热压力膨胀时,膨胀力将经由圆形凹槽、泄压连接通孔和圆形泄压通孔及时排出电动机壳体内部,以避免因膨胀力无法快速排出而导致电动机壳体受压致损。(The invention provides a switched reluctance motor capable of reducing thermal expansion force, relates to the technical field of switched reluctance motors, and solves the problems that when the running time of the conventional switched reluctance motor is too long, the interior of a motor shell expands under the action of heat pressure, but the interior of the motor shell cannot be quickly discharged out of the interior of the motor shell when the interior expands under the action of heat pressure, so that the expansion force cannot be quickly discharged, and the motor shell is easily damaged due to pressure. A switched reluctance motor for reducing thermal expansion force comprises a motor shell, wherein a circular rubber sealing sheet A is bonded and sealed in circular grooves formed in the inner circumferential surface of the motor shell. When the inside thermal stress of receiving of motor housing expands, the bulging force will in time discharge motor housing inside via circular recess, pressure release connecting hole and circular pressure release through-hole to avoid leading to motor housing pressurized to cause the damage because of the unable quick discharge of bulging force.)

1. A switched reluctance motor for reducing thermal expansion force, comprising: the motor comprises a motor shell (1), wherein a circular rubber sealing sheet A (2) is bonded and sealed in a circular groove (102) formed in the inner peripheral surface of the motor shell (1); a circular rubber sealing sheet B (3) is bonded and sealed in a circular pressure relief through hole (104) formed in the outer peripheral surface of the motor shell (1); a circular rubber sealing sheet C (4) is bonded and sealed in a circular drainage through hole (105) formed in the bottom of the outer peripheral surface of the motor shell (1).

2. The switched reluctance motor for alleviating a thermal expansion force of claim 1, wherein: the motor shell (1) comprises an annular pressure relief cavity (101) and a circular water drainage through hole (105), the annular pressure relief cavity (101) is formed in the middle of the interior of the motor shell (1), the circular water drainage through hole (105) is formed in the middle of the bottom end of the outer peripheral surface of the motor shell (1), and the circular water drainage through hole (105) is communicated with the annular pressure relief cavity (101).

3. The switched reluctance motor for alleviating a thermal expansion force of claim 1, wherein: the motor shell (1) comprises circular grooves (102) and pressure relief connecting through holes (103), six circular grooves (102) are respectively formed in edge positions of two adjacent sides of the inner peripheral surface of the motor shell (1) in an annular array shape, and the inner peripheral surface of each circular groove (102) is provided with one pressure relief connecting through hole (103) communicated with the annular pressure relief cavity (101) relative to the annular pressure relief cavity.

4. The switched reluctance motor for alleviating a thermal expansion force of claim 1, wherein: the motor shell (1) comprises circular pressure relief through holes (104), wherein the circular pressure relief through holes (104) are uniformly distributed between every two adjacent cooling fins on the outer peripheral surface of the motor shell (1) and are formed in four positions, and the circular pressure relief through holes (104) are communicated with the annular pressure relief cavity (101).

5. The switched reluctance motor for alleviating a thermal expansion force of claim 1, wherein: the circular rubber sealing sheet A (2) comprises a cutting opening A (201), the diameter of the circular rubber sealing sheet A (2) is consistent with that of a circular groove (102), the axis position of the circular rubber sealing sheet A (2) is provided with the cutting opening A (201) in a cross structure, the cutting opening A (201) is in a sealing closed state in a common state, in an installation state, the peripheral surface of the circular rubber sealing sheet A (2) is in bonding sealing with the inner peripheral surface of the circular groove (102), the circular rubber sealing sheet A (2) is located at the lower side position of a pressure relief connecting through hole (103), the motor shell (1) comprises a stop block A (106), the inner peripheral surface of the circular groove (102) is in an annular array shape and is provided with four stop blocks A (106), the four stop blocks A (106) are located at the lower side of the circular rubber sealing sheet A (2) and are in contact with the circular rubber sealing sheet A (2), and the positions of the four stop blocks A (106) are staggered with the cutting opening A (201).

6. The switched reluctance motor for alleviating a thermal expansion force of claim 1, wherein: the circular rubber sealing sheet B (3) comprises a cutting opening B (301), the diameter of the circular rubber sealing sheet B (3) is consistent with that of the circular pressure relief through hole (104), the axis part of the circular rubber sealing sheet B (3) is provided with the cutting opening B (301) which is in a cross structure, and the cutting opening B (301) is in a sealed closed state under the ordinary state, under the installation state, the peripheral surface of the round rubber sealing sheet B (3) is bonded and sealed with the inner peripheral surface of the round pressure relief through hole (104), the motor shell (1) comprises a block B (107), four blocks B (107) are arranged on the inner peripheral surface of the round pressure relief through hole (104) in an annular array shape, the four blocks B (107) are positioned at the lower side of the round rubber sealing sheet B (3) and are contacted with the round rubber sealing sheet B (3), and the positions of the four blocks B (107) are staggered with the cutting position of the cutting port B (301) with a cross structure.

7. The switched reluctance motor for alleviating a thermal expansion force of claim 1, wherein: the circular rubber sealing sheet C (4) comprises a cutting opening C (401), the diameter of the circular rubber sealing sheet C (4) is consistent with that of the circular water drainage through hole (105), the axis part of the circular rubber sealing sheet C (4) is provided with the cutting opening C (401) which is in a cross structure, and the cutting opening C (401) is in a sealed closed state under the ordinary state, under the installation state, the peripheral surface of the circular rubber sealing sheet C (4) is adhered and sealed with the inner peripheral surface of the circular water drainage through hole (105), the motor shell (1) comprises a block C (108), four blocks C (108) are arranged on the inner peripheral surface of the circular water drainage through hole (105) in an annular array shape, the four blocks C (108) are positioned on the upper side of the circular rubber sealing sheet C (4) and are contacted with the circular rubber sealing sheet C (4), and the positions of the four blocks C (108) are staggered with the cutting position of the cutting port C (401) with a cross structure.

Technical Field

The invention belongs to the technical field of switched reluctance motors, and particularly relates to a switched reluctance motor capable of reducing thermal expansion force.

Background

The switched reluctance motor speed regulating system is a latest generation stepless speed regulating system developed after a variable frequency speed regulating system and a brushless direct current motor speed regulating system, and is an optical, mechanical and electrical integration high and new technology integrating modern microelectronic technology, digital technology, power electronic technology, infrared photoelectric technology, modern electromagnetic theory, design and manufacturing technology. The speed regulating system has the advantages of both direct current and alternating current speed regulating systems. The research on the speed regulating system of the switched reluctance motor in economically developed countries such as English, American and the like is early, and remarkable effect is achieved, the power grade of the product is from several w to hundreds kw, and the switched reluctance motor speed regulating system is widely applied to the fields of household appliances, aviation, aerospace, electronics, machinery, electric vehicles and the like.

For example, application No.: 201210576722.2 the invention relates to a switch reluctance motor with cast aluminum rotor structure, which comprises a shell, a rotating shaft, a stator core, a stator winding and a rotor core, wherein: the rotating shaft penetrates through the shell and is rotatably connected with the shell; the stator core is fixedly arranged in the shell; the stator winding is a pitch winding and is arranged in a forming groove of the stator core; rotor core fixed mounting is in the pivot, is located the shell, aligns with stator core to be provided with the motor air gap in the footpath with stator core. The switched reluctance motor with the cast-aluminum rotor structure improves the power output density, the effective material utilization rate and the power factor of the switched reluctance motor, and reduces the vibration, the noise, the weight and the cost of the switched reluctance motor; the switch reluctance motor greatly improves the competitive advantage of the application in the field of speed regulation, particularly in the field of direct-drive wind power generation, so that the switch reluctance motor can be widely used for replacing the traditional switch reluctance motor and applied to the field of speed regulation and power generation, particularly in the field of direct-drive wind power generation.

Based on the search of the above patent and the discovery of the equipment in the prior art, when the running time of the switched reluctance motor is too long, the interior of the motor shell expands due to the heat pressure, but the interior of the motor shell cannot be quickly discharged out of the interior of the motor shell when expanding due to the heat pressure, so that the situation that the motor shell is pressed and damaged due to the fact that expansion force cannot be quickly discharged is easy to occur.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a switched reluctance motor capable of reducing thermal expansion force, so as to solve the problem that when the operation time of the conventional switched reluctance motor is too long, the interior of the motor housing is expanded by heat pressure, but the interior of the motor housing cannot be quickly discharged when the interior of the motor housing is expanded by heat pressure, so that the motor housing is easily damaged due to pressure caused by the fact that the expansion force cannot be quickly discharged.

The invention relates to a purpose and an effect of a switched reluctance motor for slowing down thermal expansion force, which are achieved by the following specific technical means:

a switched reluctance motor for slowing down thermal expansion force comprises a motor shell, wherein a circular rubber sealing sheet A is bonded and sealed in circular grooves formed in the inner circumferential surface of the motor shell; a circular rubber sealing sheet B is bonded and sealed in a circular pressure relief through hole formed in the outer peripheral surface of the motor shell; and a circular rubber sealing sheet C is bonded and sealed in a circular drainage through hole formed in the bottom of the outer peripheral surface of the motor shell.

Furthermore, the motor shell comprises an annular pressure relief cavity and a circular water drainage through hole, the annular pressure relief cavity is formed in the middle of the inner portion of the motor shell, the circular water drainage through hole is formed in the middle of the bottom end of the outer peripheral surface of the motor shell, and the circular water drainage through hole is communicated with the annular pressure relief cavity.

Furthermore, motor housing is including circular recess and pressure release connect the through-hole, and six circular recesses have respectively been seted up to adjacent both sides edge position of motor housing inner peripheral surface in the form of annular array, and every circular recess inner peripheral surface is all seted up one and is linked together pressure release connect the through-hole rather than annular pressure release chamber position.

Further, motor housing is including circular pressure release through-hole, all is evenly distributed form between every two adjacent fin of motor housing outer peripheral face and respectively has seted up the circular pressure release through-hole of four places, and circular pressure release through-hole is linked together with annular pressure release chamber.

Further, the circular rubber sealing sheet A comprises a cutting opening A, the diameter of the circular rubber sealing sheet A is consistent with that of the circular groove, a cutting opening A with a cross structure is formed in the axis position of the circular rubber sealing sheet A, the cutting opening A is in a sealed closed state in a common state, in an installation state, the outer peripheral surface of the circular rubber sealing sheet A is in bonding and sealing with the inner peripheral surface of the circular groove, the circular rubber sealing sheet A is located at the lower side position of the pressure relief connecting through hole, the motor shell comprises a stop block A, the inner peripheral surface of the circular groove is provided with four stop blocks A in an annular array shape, the four stop blocks A are located at the lower side of the circular rubber sealing sheet A and are in contact with the circular rubber sealing sheet A, and the positions of the four stop blocks A are staggered with the cutting opening A with the cross.

Further, circular rubber sealing thin slice B is including cutting off a mouthful B, circular rubber sealing thin slice B diameter is unanimous with circular pressure release through-hole diameter, circular rubber sealing thin slice B axle center part is seted up one and is a cutting off mouth B that is cross structure, and be in sealed closed state under the cutting off mouth B ordinary state, under the installation condition, circular rubber sealing thin slice B outer peripheral face bonds with circular pressure release through-hole inner peripheral surface and seals, motor housing is including dog B, circular pressure release through-hole inner peripheral face is the annular array form and is provided with four dog B, four dog B are located circular rubber sealing thin slice B downside and contact with it, and four dog B positions are cut off a position with cutting off mouthful B that is cross structure and are wrong mutually.

Further, the circular rubber sealing sheet C comprises a cutting opening C, the diameter of the circular rubber sealing sheet C is consistent with that of the circular water drainage through hole, a cross-shaped cutting opening C is formed in the axis position of the circular rubber sealing sheet C, the cutting opening C is in a sealed closed state in a common state, in an installation state, the outer peripheral surface of the circular rubber sealing sheet C is in bonding sealing with the inner peripheral surface of the circular water drainage through hole, the motor shell comprises a stop dog C, four stop dogs C are arranged in an annular array shape in the inner peripheral surface of the circular water drainage through hole, the four stop dogs C are located on the upper side of the circular rubber sealing sheet C and are in contact with the circular rubber sealing sheet C, and the positions of the four stop dogs C are staggered with the positions of the cutting opening C of the cross-.

Compared with the prior art, the invention has the following beneficial effects:

when the operating time overlength, when the inside thermal pressure inflation that receives of motor housing, the inflation force is bloated the cut-off A that the circular rubber sealing thin slice A seted up in the sealed circular recess, its inflation force gets into through pressure release connecting through hole input to annular pressure release intracavity via circular recess, and the inflation force in the annular pressure release intracavity of input will be bloated the cut-off B that the circular rubber sealing thin slice B seted up in the sealed circular pressure release through hole, when making the inside thermal pressure inflation that receives of motor housing, the inflation force will be via circular recess, inside pressure release connecting through hole and the timely discharge motor housing of circular pressure release through hole, in order to avoid leading to motor housing pressurized to damage because of the unable quick discharge of inflation force.

The four check blocks B are arranged on the lower side of the circular rubber sealing sheet B and are in contact with the circular rubber sealing sheet B, the positions of the four check blocks B are staggered with the cutting position of the cutting port B in a cross structure, and the cutting port A in a sealing state on the circular rubber sealing sheet A can be effectively limited by the arrangement of the four check blocks B, so that the cutting port B is prevented from entering an annular pressure release cavity by external air flow or water flush.

The middle part of the bottom end of the outer peripheral surface of the motor shell is provided with a circular water drainage through hole communicated with the annular pressure relief cavity, a circular rubber sealing sheet C is bonded and sealed in the circular water drainage through hole, when a small amount of water enters the annular pressure relief cavity from the circular pressure relief through hole, the water flows to the circular water drainage through hole along the annular pressure relief cavity, and when the water reaches a certain volume, the water breaks a cut-off opening C of the circular rubber sealing sheet C and is discharged from the circular water drainage through hole, so that the water is prevented from being accumulated in the annular pressure relief cavity.

Drawings

Fig. 1 is a schematic cross-sectional structure of a motor case of the present invention.

Fig. 2 is a schematic view of the present invention at a part enlarged in fig. 1.

Fig. 3 is a schematic view of the present invention at a part B in fig. 1.

Fig. 4 is a partially enlarged structural view of the circular groove portion of the present invention.

Fig. 5 is a partially enlarged schematic structural view of a circular pressure relief through hole portion of the present invention.

Fig. 6 is a partial enlarged structure diagram of the circular drainage through hole part of the invention.

Fig. 7 is a schematic top view of the motor housing of the present invention.

Fig. 8 is a schematic bottom view of the motor housing of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a motor housing; 101. an annular pressure relief cavity; 102. a circular groove; 103. a pressure relief connecting through hole; 104. a circular pressure relief through hole; 105. a circular drainage through hole; 106. a block A; 107. a stop block B; 108. a stopper C; 2. a circular rubber sealing sheet a; 201. cutting a port A; 3. a circular rubber sealing sheet B; 301. cutting a fracture B; 4. a circular rubber sealing sheet C; 401. and cutting off the port C.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in figures 1 to 8:

the invention provides a switch reluctance motor for slowing down thermal expansion force, comprising: a circular rubber sealing sheet A2 is adhered and sealed in a circular groove 102 arranged on the inner circumferential surface of the motor shell 1; a circular rubber sealing sheet B3 is bonded and sealed in a circular pressure relief through hole 104 formed in the outer peripheral surface of the motor shell 1; a circular rubber sealing sheet C4 is bonded and sealed in a circular drainage through hole 105 formed in the bottom portion of the outer peripheral surface of the motor case 1.

The motor casing 1 comprises an annular pressure relief cavity 101 and a circular water drainage through hole 105, the annular pressure relief cavity 101 is formed in the middle of the inside of the motor casing 1, the circular water drainage through hole 105 is formed in the middle of the bottom end of the outer peripheral surface of the motor casing 1, and the circular water drainage through hole 105 is communicated with the annular pressure relief cavity 101.

The motor housing 1 comprises circular grooves 102 and pressure relief connecting through holes 103, six circular grooves 102 are respectively formed in edge positions of two adjacent sides of the inner circumferential surface of the motor housing 1 in an annular array shape, and the inner circumferential surface of each circular groove 102 is provided with one pressure relief connecting through hole 103 communicated with the annular pressure relief cavity 101 relative to the annular pressure relief cavity.

Wherein, motor housing 1 is including circular pressure release through-hole 104, all is evenly distributed form between per two adjacent fin of motor housing 1 outer peripheral face and respectively has seted up circular pressure release through-hole 104 in four places, and circular pressure release through-hole 104 is linked together with annular pressure release chamber 101.

The circular rubber sealing sheet A2 comprises a cutting opening A201, the diameter of the circular rubber sealing sheet A2 is consistent with that of a circular groove 102, the axis position of the circular rubber sealing sheet A2 is provided with the cutting opening A201 in a cross structure, the cutting opening A201 is in a sealed closed state in a common state, in an installation state, the outer peripheral surface of the circular rubber sealing sheet A2 is in bonding sealing with the inner peripheral surface of the circular groove 102, the circular rubber sealing sheet A2 is positioned at the lower side position of a pressure relief connecting through hole 103, the motor shell 1 comprises a stop block A106, four stop blocks A106 are arranged in an annular array shape on the inner peripheral surface of the circular groove 102, the four stop blocks A106 are positioned at the lower side of the circular rubber sealing sheet A2 and are in contact with the circular rubber sealing sheet A2, and the positions of the four stop blocks A106 are staggered with the cutting position of.

The circular rubber sealing sheet B3 comprises a cutting opening B301, the diameter of the circular rubber sealing sheet B3 is consistent with that of a circular pressure relief through hole 104, the axis position of the circular rubber sealing sheet B3 is provided with the cutting opening B301 in a cross structure, the cutting opening B301 is in a sealed closed state in a common state, in an installation state, the outer peripheral surface of the circular rubber sealing sheet B3 is bonded and sealed with the inner peripheral surface of the circular pressure relief through hole 104, the motor shell 1 comprises a block B107, the inner peripheral surface of the circular pressure relief through hole 104 is provided with four blocks B107 in an annular array shape, the four blocks B107 are positioned at the lower side of the circular rubber sealing sheet B3 and are in contact with the circular rubber sealing sheet B3, and the positions of the four blocks B107 and the cutting position of the cutting opening B301 in the.

The circular rubber sealing sheet C4 comprises a cutting opening C401, the diameter of the circular rubber sealing sheet C4 is consistent with that of a circular water drainage through hole 105, the axial center part of the circular rubber sealing sheet C4 is provided with the cutting opening C401 in a cross structure, the cutting opening C401 is in a sealing and closing state under a common state, in an installation state, the outer peripheral surface of the circular rubber sealing sheet C4 is adhered and sealed with the inner peripheral surface of the circular water drainage through hole 105, the motor shell 1 comprises a block C108, four blocks C108 are arranged on the inner peripheral surface of the circular water drainage through hole 105 in an annular array shape, the four blocks C108 are positioned on the upper side of the circular rubber sealing sheet C4 and are in contact with the circular rubber sealing sheet C4, and the positions of the four blocks C108 are staggered with the cutting position of the cutting opening C401 in.

When in use:

when the operation time is too long, and the interior of the motor shell 1 is expanded by heating pressure, an expansion force expands to open a cut-off opening A201 formed in a circular rubber sealing sheet A2 in a sealing circular groove 102, the expansion force enters into an annular pressure relief cavity 101 through the circular groove 102 and is input into an annular pressure relief cavity 101 through a pressure relief connecting through hole 103, and the input expansion force in the annular pressure relief cavity 101 expands to open a cut-off opening B301 formed in a circular rubber sealing sheet B3 in a sealing circular pressure relief through hole 104, so that when the interior of the motor shell 1 is expanded by heating pressure, the expansion force is timely discharged out of the interior of the motor shell 1 through the circular groove 102, the pressure relief connecting through hole 103 and the circular pressure relief through hole 104, and the motor shell 1 is prevented from being damaged by pressure due to the fact that the expansion force;

the inner peripheral surface of the circular pressure relief through hole 104 is provided with four stoppers B107 in an annular array shape, the four stoppers B107 are positioned at the lower side of the circular rubber sealing sheet B3 and are contacted with the circular rubber sealing sheet B3, and the positions of the four stoppers B107 are staggered with the cutting part of the cutting port B301 in a cross structure, so that the cutting port A201 on the circular rubber sealing sheet A2 in a sealing state can be effectively limited by the arrangement of the four stoppers B107, and the phenomenon that external air flow or water rushes the cutting port B301 to enter the annular pressure relief cavity 101 is avoided; furthermore, the middle part of the bottom end of the outer peripheral surface of the motor shell 1 is provided with a circular water drainage through hole 105 communicated with the annular pressure relief cavity 101, a circular rubber sealing sheet C4 is bonded and sealed in the circular water drainage through hole 105, four block C108 are arranged in an annular array on the inner peripheral surface of the circular water drainage through hole 105, the four block C108 are positioned on the upper side of the circular rubber sealing sheet C4 and are contacted with the circular rubber sealing sheet C4, the position of the four block C108 is staggered with the position of the cutting part of the cutting opening C401 in a cross structure, through the arrangement of the four block C108, the cutting opening A201 in a sealing state on the circular rubber sealing sheet A2 can be effectively limited, so that external air flow or water from the cutting opening B301 to the annular pressure relief cavity 101 is avoided, and a small amount of water entering the annular pressure relief cavity 101 from the circular pressure relief through hole 104 flows to the circular water drainage through hole 105 along the annular pressure relief cavity 101, when the water reaches a certain volume, the water will blow open the cut-off port C401 of the circular rubber sealing sheet C4 and be discharged from the circular drainage through hole 105, thereby preventing the water from being accumulated in the annular pressure relief chamber 101.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.