CN212875529U

CN212875529U - Natural cooling permanent magnet motor

Info

Publication number: CN212875529U
Application number: CN202022190933.5U
Authority: CN
Inventors: 沈云荣; 周神文
Original assignee: Taizhou Paloton Mechanical And Electrical Co ltd
Current assignee: Taizhou Paloton Mechanical And Electrical Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-04-02
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a natural cooling's permanent-magnet machine belongs to motor technical field, and aim at overcomes the higher defect of current motor manufacturing cost for the pump. The motor for the pump includes integrated into one piece's casing, set up motor chamber, demonstration chamber and control chamber on the casing, motor body is equipped with in the motor chamber, it is equipped with the display to show the chamber, the frequency converter is equipped with in the control chamber, the opening part in control chamber sets up the end cover, the fin has on the end cover. The utility model provides a pair of natural cooling's permanent-magnet machine, motor body, display and converter are installed on same integrative casing, and the surface of casing is great like this, and the heat dissipation of the motor body of being convenient for need not to be used for the radiating fan of motor body specially, reduces motor manufacturing cost, reduces the fault rate, and the fin sets up motor body dorsad, and the heat dissipation of being convenient for to the converter improves the radiating effect towards more open space.

Description

Natural cooling permanent magnet motor

Technical Field

The utility model belongs to the technical field of the motor, a natural cooling's permanent-magnet machine is related to.

Background

The current permanent magnet motor of a natural cooling includes the motor casing, install the motor body in the motor casing, the control shell, install the converter in the control shell, control shell and motor casing mutually independent processing, install the display on the control shell, for being convenient for look over, the display needs the motor casing installation dorsad, fin on the control shell needs to be installed towards the motor casing like this, be unfavorable for the heat dissipation of converter, it helps the heat dissipation to need to cooperate converter radiator fan usually, and is high in cost, and the cooling surface of motor casing is less, also need install motor radiator fan and dispel the heat, motor manufacturing cost is higher.

Disclosure of Invention

The utility model discloses the problem to prior art existence provides a natural cooling's permanent-magnet machine, and aim at overcomes the current higher defect of motor manufacturing cost for the pump.

The utility model discloses a realize like this:

the utility model provides a natural cooling's permanent-magnet machine, its characterized in that, includes integrated into one piece's casing, set up motor chamber, demonstration chamber and control chamber on the casing, the motor body is equipped with in the motor chamber, show that the chamber is equipped with the display, the frequency converter is equipped with in the control chamber, the opening part in control chamber sets up the end cover, the fin has on the end cover. Motor body, display and converter are installed on same integrative casing, and the surface of casing is great like this, and the heat dissipation of the motor body of being convenient for need not to be used for the radiating fan of motor body specially, realizes natural cooling through natural wind, reduces motor manufacturing cost, reduces the fault rate, and the fin sets up motor body dorsad, and the heat dissipation of being convenient for to the converter improves the radiating effect towards more open space.

Preferably, the frequency converter includes a circuit board and a heating element mounted on the circuit board, the heating element being disposed toward the end cap. Therefore, the heating element can transfer heat to the end cover more quickly, and the heat dissipation effect is improved.

Preferably, the heating element abuts against an inner wall of the end cap. Like this heating element passes through heat-conduction's mode high efficiency and gives the end cover with the heat transfer, further improves the radiating effect.

Preferably, the frequency converter is fixed on the end cover, the inner wall of the end cover is provided with a convex abutting part, and the heating element abuts against the abutting part. Therefore, the matching relation between the frequency converter and the end cover can be better controlled, and whether the heating element is attached to the end cover or not can be conveniently observed.

Preferably, the display cavity with set up the hole of stepping down between the control chamber, the converter includes electric capacity, electric capacity passes the hole of stepping down. Therefore, the depth of the control cavity can be reduced, and the overall appearance of the motor is smaller.

Preferably, a seal is provided between the end cap and the housing. The sealing member plays sealed effect promptly, also plays thermal-insulated effect, can reduce the casing and to the end cover heat transfer for the end cover can be better for the converter heat dissipation.

Preferably, a wire passing hole is formed between the display cavity and the control cavity, a first wire passing channel is arranged in the control cavity, and a cover plate is arranged at the first wire passing channel in the control cavity. The cover plate can restrain the wires for connecting the display and the frequency converter, so that the wires are arranged more regularly, and the failure rate is reduced.

Preferably, the display is fixed on a fixing frame, the fixing frame is fixed on the shell, the fixing frame is provided with a fixing screw hole, a fixing hole is formed in the junction of the display cavity and the control cavity, and the fixing frame is fixed through a screw which penetrates through the fixing hole and is screwed into the fixing screw hole. Therefore, the screws for fixing the display can be completely hidden, and the sealing performance and the aesthetic property of the motor are improved.

Preferably, the fixing frame is provided with a second wire passing channel, a limiting rib is arranged at the second wire passing channel, and only one end of the limiting rib is fixedly connected with the fixing frame. Spacing muscle can retrain the wire of connecting converter and display, avoids the wire in disorder, and the one end of spacing muscle freely is convenient for between wire embedding spacing muscle and the mount.

Preferably, the motor shaft of the motor body extends out of a port of the motor cavity, and the shell is provided with a positioning structure at the port of the motor cavity. The port of the motor cavity is in butt joint with the pump body, and the pump body is provided with a structure corresponding to the positioning structure, so that the assembly efficiency between the pump body and the shell can be improved.

The utility model provides a pair of natural cooling's permanent-magnet machine, motor body, display and converter are installed on same integrative casing, and the surface of casing is great like this, and the heat dissipation of the motor body of being convenient for need not to be used for the radiating fan of motor body specially, reduces motor manufacturing cost, reduces the fault rate, and the fin sets up motor body dorsad, and the heat dissipation of being convenient for to the converter improves the radiating effect towards more open space.

Drawings

FIG. 1 is a schematic structural view of a motor;

FIG. 2 is an exploded view of the motor;

FIG. 3 is a schematic cross-sectional view of the motor;

FIG. 4 is a schematic structural view of the housing, seal and end cap prior to assembly;

FIG. 5 is a schematic view of a first angular configuration of the housing;

FIG. 6 is a second angular configuration of the housing;

FIG. 7 is a third angular configuration of the housing;

FIG. 8 is a schematic structural view of the fixing frame;

fig. 9 is a schematic structural view of the transducer and the end cap before assembly.

Reference is made to the accompanying drawings in which: 100. a housing; 110. a motor cavity; 111. positioning a groove; 120. a display cavity; 121. a step structure; 130. a control chamber; 131. a seal member; 132. a rib is protruded; 133. fixing a column; 134. a first wire passage; 135. caulking grooves; 136. a cover plate; 140. a hole of abdication; 150. a wire passing hole; 160. a fixing hole; 200. a motor body; 210. a motor shaft; 300. a display; 310. a fixed mount; 311. a second wire passage; 312. limiting ribs; 313. fixing screw holes; 400. a frequency converter; 410. a heating element; 420. a capacitor; 500. an end cap; 510. a heat sink; 520. an abutment portion.

Detailed Description

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The embodiment provides a naturally cooled permanent magnet motor, as shown in fig. 1-3, which includes an integrally formed housing 100, a motor cavity 110, a display cavity 120 and a control cavity 130 are disposed on the housing 100, the motor cavity 110 is provided with a motor body 200, the display cavity 120 is provided with a display 300, the control cavity is provided with a frequency converter 400, an opening of the control cavity 130 is provided with an end cover 500, and the end cover 500 is provided with a heat sink 510. Motor shaft 210 of motor body 200 stretches out motor chamber 110 from the port in motor chamber 110, has and when using on the pump, is equipped with the impeller on the motor shaft 210, and the pump body is installed to motor body 200 port department in motor chamber 110, and motor body 200 includes stator and rotor, and motor body 200 circular telegram work drives the impeller and rotates, realizes the function of pump. The frequency converter 400 is connected with the motor body 200 and can control the rotating speed of the motor body 200, the display 300 is connected with the frequency converter 400, the display 300 can display the running condition of the motor, and the running condition can be temperature, rotating speed and the like. Converter 400 work can produce a large amount of heat, if do not in time dispel the heat, converter 400's performance can reduce or even damage, and fin 510 can dispel the heat to converter 400, improves the stability and the persistence of converter 400 work.

Motor body 200, display 300 and converter 400 install on same integrative casing 100, and the surface of casing 100 is great like this, and the heat dissipation of the motor body 200 of being convenient for need not to be used for the radiating fan of motor body 200 specially, reduces motor manufacturing cost, reduces the fault rate, and fin 510 sets up motor body 200 dorsad, and the heat dissipation to converter 400 of being convenient for improves the radiating effect towards more open space.

As shown in fig. 2-3, the frequency converter 400 includes a circuit board and a heating element 410 mounted on the circuit board, the heating element 410 being disposed toward the end cap 500. Thus, the heat generating element 410 can transfer heat to the end cap 500 more quickly, thereby improving heat dissipation. The heating element 410 abuts against the inner wall of the end cap 500. In this way, the heat generating element 410 efficiently transfers heat to the end cap 500 by heat conduction, thereby further improving the heat dissipation effect. The heating element 410 is a component of the frequency converter 400 with a large heat generation amount, and in this embodiment, includes an IPM module and a rectifier bridge.

As shown in fig. 9, the inverter 400 is fixed to the end cap 500, the inner wall of the end cap 500 has a convex abutting portion 520, and the heat generating element 410 abuts against the abutting portion 520. Therefore, the matching relationship between the frequency converter 400 and the end cap 500 can be better controlled, and whether the heating element 410 and the end cap 500 are attached or not can be conveniently observed. When assembling, the frequency converter 400 is fixed to the end cap 500 by screws, and the positional relationship between the frequency converter 400 and the end cap 500 can be easily observed and controlled before the end cap 500 is fixed to the housing 100. In alternative embodiments, the transducer 400 may be fixed to the housing 100 and then the end cap 500 may cover the control chamber 130, but the end cap 500 may already enclose the transducer 400 in the control chamber 130 and the fit between the end cap 500 and the transducer 400 may not be observed.

As shown in fig. 3 and 5, a relief hole 140 is disposed between the display cavity 120 and the control cavity 130, and the frequency converter 400 includes a capacitor 420, and the capacitor 420 passes through the relief hole 140. This reduces the depth of the control chamber 130, resulting in a smaller overall profile of the motor. In other alternative embodiments, the frequency converter 400 may also be completely located in the control chamber 130, and since the partial capacitor 420 is longer, the control chamber 130 needs to be made larger to accommodate the frequency converter 400, so that the overall size of the motor becomes larger, which is not favorable for the miniaturization design of the motor.

As shown in fig. 2-5, a seal 131 is disposed between the end cap 500 and the housing 100. The sealing member 131 plays a role in sealing and also plays a role in thermal insulation, so that heat transfer from the casing 100 to the end cover 500 can be reduced, and the end cover 500 can better dissipate heat of the frequency converter 400. The casing 100 is provided with a caulking groove 135, the sealing member 131 is installed in the caulking groove 135, the caulking groove 135 can restrain the sealing member 131 to prevent the sealing member 131 from being distorted, and the end cover 500 is abutted against the sealing member 131 to clamp the sealing member 131 between the end cover 500 and the casing 100. The sealing member 131 has a threading part at a local position, and the threading part is provided with a threading hole for allowing a pressure sensor signal wire or a flow switch signal wire to pass through.

As shown in fig. 2 and 5, a wire passing hole 150 is disposed between the display cavity 120 and the control cavity 130, a first wire passing channel 134 is disposed in the control cavity 130, a rib 132 is disposed on a bottom wall of the control cavity 130, the rib 132 and a side wall of the control cavity 130 define the first wire passing channel 134, a cover plate 136 is disposed at the first wire passing channel 134 in the control cavity 130, a fixing post 133 is disposed at an end of the rib 132, and the cover plate 136 is fixed on the fixing post 133 by a screw. The cover plate 136 can constrain the wires connecting the display 300 and the frequency converter 400, so that the arrangement of the wires is more regular, and the failure rate is reduced.

As shown in fig. 2, 3, 7 and 8, the display 300 is fixed on a fixing frame 310, the fixing frame 310 is fixed on the casing 100, the fixing frame 310 has a fixing screw hole 313, a fixing hole 160 is provided at a boundary between the display chamber 120 and the control chamber 130, and the fixing frame 310 is fixed by a screw passing through the fixing hole 160 and screwed into the fixing screw hole 313. Thus, the screws for fixing the display 300 can be completely hidden, and the sealing performance and the aesthetic property of the motor can be improved. When the display 300 is installed, the display 300 is fixed on the fixing frame 310 through screws, the fixing frame 310 is placed in the display cavity 120, the fixing screw holes 313 are aligned with the fixing holes 160, and then the fixing holes are locked through the screws, and the steps are performed before the end cover 500 is installed, namely, the display 300 is installed, and then the frequency converter 400 and the end cover 500 are installed. The housing 100 is provided with a step structure 121 at the display cavity 120, the step structure 121 supports the fixing frame 310, and when the fixing frame 310 is mounted on the step structure 121 in place, the fixing screw holes 313 are aligned with the fixing holes 160, thereby improving the assembly efficiency of the display 300.

As shown in fig. 8, the fixing frame 310 has a second wire passage 311, a limiting rib 312 is disposed at the second wire passage 311, and only one end of the limiting rib 312 is fixedly connected to the fixing frame 310. The limiting rib 312 can restrain a wire connecting the frequency converter 400 and the display 300, the wire is prevented from being messy, and one end of the limiting rib 312 is free to facilitate the wire to be embedded between the limiting rib 312 and the fixing frame 310.

As shown in fig. 6, the casing 100 is provided with a positioning structure at the port of the motor cavity 110, the positioning structure is a positioning groove 111, the port of the motor cavity 110 is in butt joint with the pump body, the pump body is provided with a limiting block corresponding to the positioning groove 111, and corresponding hole positions of the pump body and the casing 100 are aligned as long as the limiting block is embedded into the positioning groove 111, so that further screw fastening operation is facilitated, and the assembly efficiency between the pump body and the casing 100 can be improved.

Claims

1. The utility model provides a natural cooling's permanent-magnet machine, its characterized in that, includes integrated into one piece's casing (100), set up motor chamber (110), demonstration chamber (120) and control chamber (130) on casing (100), motor body (200) are equipped with in motor chamber (110), show that display chamber (120) are equipped with display (300), converter (400) are equipped with in the control chamber, the opening part in control chamber (130) sets up end cover (500), fin (510) have on end cover (500).

2. A naturally cooled permanent magnet electric machine according to claim 1, characterised in that the frequency converter (400) comprises a circuit board and a heat generating element (410) mounted on the circuit board, the heat generating element (410) being arranged towards the end cap (500).

3. A naturally cooled permanent magnet electric machine according to claim 2, characterised in that the heating element (410) bears against the inner wall of the end cap (500).

4. A naturally cooled permanent magnet electric machine according to claim 2, characterized in that the frequency converter (400) is fixed to the end cap (500), the inner wall of the end cap (500) has a raised abutment (520), and the heating element (410) abuts against the abutment (520).

5. A naturally cooled permanent magnet machine according to claim 1, characterized in that a relief hole (140) is provided between the display chamber (120) and the control chamber (130), and the frequency converter (400) comprises a capacitor (420), and the capacitor (420) passes through the relief hole (140).

6. A naturally cooled permanent magnet electric machine according to claim 1, characterised in that a seal (131) is provided between the end cover (500) and the housing (100).

7. A naturally cooled permanent magnet electric machine according to claim 1, characterised in that a wire passage hole (150) is provided between the display chamber (120) and the control chamber (130), a first wire passage channel (134) is provided in the control chamber (130), and a cover plate (136) is provided in the control chamber (130) at the first wire passage channel (134).

8. The naturally cooled permanent magnet motor according to claim 1, wherein the display (300) is fixed on a fixing frame (310), the fixing frame (310) is fixed on the housing (100), the fixing frame (310) has a fixing screw hole (313), a fixing hole (160) is provided at the interface of the display cavity (120) and the control cavity (130), and the fixing frame (310) is fixed by a screw passing through the fixing hole (160) and screwed into the fixing screw hole (313).

9. The naturally-cooled permanent magnet motor according to claim 8, wherein the fixing frame (310) is provided with a second wire passage (311), a limiting rib (312) is arranged at the second wire passage (311), and only one end of the limiting rib (312) is fixedly connected with the fixing frame (310).

10. A naturally cooled permanent magnet electric machine according to claim 1, characterised in that the motor shaft (210) of the motor body (200) protrudes from the motor cavity (110) at a port of the motor cavity (110), the housing (100) being provided with a positioning structure at the port of the motor cavity (110).