CN210223922U - Electric protection device - Google Patents
Electric protection device Download PDFInfo
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- CN210223922U CN210223922U CN201920815403.XU CN201920815403U CN210223922U CN 210223922 U CN210223922 U CN 210223922U CN 201920815403 U CN201920815403 U CN 201920815403U CN 210223922 U CN210223922 U CN 210223922U
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- push rod
- protection device
- electrical protection
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Abstract
The utility model relates to the technical field of electric product manufacturing, in particular to an electric protection device, which comprises a magnetic heating mechanism and a motion mechanism, wherein the magnetic heating mechanism and the motion mechanism form a closed cavity, a phase-change material is arranged in the closed cavity, and the motion mechanism moves relative to the magnetic heating mechanism according to the state of the phase-change material; the utility model integrates thermal tripping overload protection and magnetic tripping short-circuit protection, and utilizes the electromagnetic coil of the electric product to carry out eddy heating and conduction heating on the magnetic heating mechanism, so that the phase-change material arranged in the magnetic heating mechanism expands to do work to push the motion mechanism to generate relative mechanical displacement, and the motion mechanism triggers the electric product operation mechanism to execute overload tripping action; through the direct action of the electromagnetic coil and the magnetic heating mechanism, through the direct displacement of the magnetic heating mechanism, the magnetic heating mechanism triggers the electric product operating mechanism to execute the short circuit tripping action.
Description
Technical Field
The invention relates to the technical field of electric product manufacturing, in particular to an electric protection device.
Background
The electrical protection products are key devices in the power distribution system, and the overload protection and the short-circuit protection are two main functions of the electrical products, and are used for protecting the safety of circuits and electric equipment and preventing fire and danger. The existing electric products adopt an electric heating principle or an electromagnetic principle to carry out overload protection, wherein the electric heating principle is that electric energy is directly converted into heat energy, and the heat energy is converted into mechanical kinetic energy. The current passing through the electric product directly generates heat on the thermal element, the thermal element adopts double (three) metal sheets and is matched with a flexible connection and a debugging screw, a nut and the like which are connected with the thermal element to carry out long-delay overload protection, but the double (three) metal sheets are complex to install and debug, have large power consumption and high temperature rise, are easy to generate irreversible bending deformation when being welded with related elements during installation, are unreliable in positioning during welding so that the metal sheets are inaccurately positioned in the product and are easy to interfere with other elements, the double (three) metal sheets need to be subjected to zero position adjustment after being installed, at the moment, special tools are needed to be matched, and the adjusted electric product needs to be tested again after being cooled to confirm whether the adjustment meets the requirements, therefore, the double (three) metal sheets assembled by the existing electric product have low efficiency, long process time and high product cost, the overload protection performance is unstable, the reliability is poor, and the automatic production is not facilitated. Meanwhile, after the overload fault of the breaking circuit of the electrical product occurs, the electrical product can be reclosed after being cooled, and the fault recovery time is long.
The electromagnetic principle is that electric energy is directly converted into electromagnetic energy, and the electromagnetic energy is converted into mechanical kinetic energy. The mode is that the movable iron core in the oil cup inside the electromagnetic coil generates magnetic field change under the action of the magnetic field of the coil, so that the movable armature outside is attracted, and the overload protection function of the electric product is realized. However, the production process of the product is complex, the cost is high, and the application is few.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: an electrical protection device is provided that provides both overload and short circuit protection to an electrical product.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an electric protection device, it includes solenoid, the device is located solenoid, the device includes magnetism hot mechanism and motion, magnetism hot mechanism and motion form closed chamber, be provided with phase change material in the closed chamber, motion moves according to phase change material's the relative magnetism hot mechanism of state.
The invention has the beneficial effects that: by integrating thermal tripping overload protection and magnetic tripping short-circuit protection together, eddy current heating and conduction heating are carried out on the magnetic heating mechanism by utilizing an electromagnetic coil of an electric product, so that a phase-change material arranged in the magnetic heating mechanism expands to work to push the movement mechanism to generate relative mechanical displacement, and the movement mechanism triggers the electric product operation mechanism to execute overload tripping action; the electromagnetic coil and the magnetic heating mechanism directly act, and the magnetic heating mechanism directly displaces to trigger the electric product operating mechanism to execute short circuit tripping action; also can be through the setting of the first piece that resets, after the heat dissipation cooling, the drive resets, guarantees to close a floodgate once more to realize the overload and the short-circuit protection of electric products.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram according to a second embodiment of the present invention;
description of reference numerals: 1. a magnetic yoke; 11. a magnetocaloric mechanism; 12. a seal member; 13. a motion mechanism; 131. a first push rod; 132. an end cap; 133. a first reset member; 14. a closed cavity; 2. an electromagnetic coil; 3. a sleeve; 31. a limiting block; 32. a second push rod; 33. a second reset member.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 and 2, an electrical protection device includes an electromagnetic coil 2, the device is located in the electromagnetic coil 2, the device includes a magnetocaloric mechanism 11 and a moving mechanism 13, the magnetocaloric mechanism 11 and the moving mechanism 13 form a closed cavity 14, a phase change material is disposed in the closed cavity 14, and the moving mechanism moves relative to the magnetocaloric mechanism 11 according to a state of the phase change material.
The working principle of the invention is as follows: the magnetocaloric mechanism 11 is made of magnetic conductive metal; the electromagnetic energy of the electric product is converted into electromagnetic energy in the electromagnetic coil 2 of the electric product through the magnetic heating mechanism 11, the electromagnetic energy acts on the magnetic conductive metal to generate eddy current inside the magnetic heating mechanism 11, heat energy is generated through the eddy current, the phase change material is heated by the heat energy to expand the phase change material, and mechanical kinetic energy is generated to drive the movement mechanism 13 and the magnetic heating mechanism 11 to generate relative displacement; through the setting of first piece 133 that resets, can realize automatic re-setting after phase change material heat dissipation cooling. The short-circuit protection is to directly drive the whole of the magnetocaloric mechanism 11 and the moving mechanism 13 by using an electromagnetic field generated by the electromagnetic coil 2 of the electric product, and further to displace.
As can be seen from the above description, by integrating thermal trip overload protection and magnetic trip short-circuit protection, the electromagnetic coil 2 of the electrical product is used to perform eddy current heating and conduction heating on the magnetocaloric mechanism 11, so that the phase change material installed inside the magnetocaloric mechanism 11 expands to work to push the moving mechanism 13 to generate relative mechanical displacement, and the moving mechanism 13 triggers the electrical product operating mechanism to execute overload trip action; through the direct action of the electromagnetic coil 2 and the magnetocaloric mechanism 11, through the direct displacement of the magnetocaloric mechanism 11, the magnetocaloric mechanism 11 triggers the electric product operating mechanism to execute the short circuit tripping action; also can be through the setting of first piece 133 that resets, after the heat dissipation cooling, the drive resets, guarantees to close a floodgate once more to realize the overload and the short-circuit protection of electric products.
Further, the electric protection device further comprises a sleeve 3, the sleeve 3 is located in the electromagnetic coil 2, the magnetocaloric mechanism 11 is located inside the sleeve 3, and the movement mechanism 13 and the closed cavity 14 are arranged inside the movable iron core.
Further, the moving mechanism 13 includes a first push rod 131, an end cover 132, and a first restoring member 133 disposed on the first push rod 131; the end cover 132 is provided with a first opening for the first push rod 131 to pass through; one end of the first push rod 131 is arranged in the closed cavity 14, and the other end of the first push rod extends out of the first opening; the first restoring member 133 is disposed between one end of the first push rod 131 located in the closed cavity 14 and the end cap 132.
Further, a limiting block 31, a second push rod 32 and a second reset piece 33 are further arranged in the sleeve 3, and a second opening is formed in the sleeve 3; one end of the second push rod 32 is connected with the moving mechanism 13, and the other end of the second push rod extends out of the second opening;
the second reset piece 33 is located on the second push rod 32 and between the moving mechanism 13 and the stopper 31.
Further, the end of the first push rod 131 of the moving mechanism 13 is connected to the second push rod 32.
As can be seen from the above description, the trip protection can be realized by directly pushing the first push rod 131 and the second push rod 32 through the phase change expansion of the phase change material.
Further, the second push rod 32 is connected to the magnetocaloric mechanism 11.
As can be seen from the above description, the first push rod 131 can be directly pushed by the phase change of the phase change material, and the end of the push rod of the first push rod 131 is in contact with the bottom of the sleeve 3 to push the movable member, and the second push rod 32 is pushed by the movable member to implement the trip protection.
Further, one end of the first push rod 131, which is located in the closed cavity 14, is a tapered boss.
From the above description, it can be known that, through the tapered boss, the resetting of the first push rod 131 can be facilitated, and meanwhile, the first push rod 131 is also facilitated to generate displacement when the compressed phase-change material expands to do work.
Further, a magnetic yoke 1 is arranged outside the electromagnetic coil 2.
As is apparent from the above description, the heat generation of the electromagnetic coil 2 can be reduced by the yoke 1 as a magnetic shield.
Further, the moving mechanism 13 is isolated from the closed cavity 14 by a sealing member 12.
Further, the sealing member 12 is a flexible sealing sheet.
As can be seen from the above description, the sealing member 12 has plastic deformation capability and pressure resistance capability through the arrangement of the flexible sealing sheet; the shape of the first push rod 131 can be fitted, and compression is facilitated.
Further, the end cap 132 is welded or riveted to the magnetocaloric mechanism 11.
Example one
Referring to fig. 1, an electrical protection device includes an electromagnetic coil, the device is located in the electromagnetic coil, the device includes a magnetocaloric mechanism and a motion mechanism, the magnetocaloric mechanism and the motion mechanism form a closed cavity, a phase change material is disposed in the closed cavity, and the motion mechanism moves relative to the magnetocaloric mechanism according to a state of the phase change material. The phase change material is paraffin.
The electric protection device further comprises a sleeve, the sleeve is located in the electromagnetic coil, the magnetic heating mechanism is located inside the sleeve, and the moving mechanism and the closed cavity are arranged inside the movable iron core.
The movement mechanism comprises a first push rod, an end cover and a first reset piece arranged on the first push rod; the end cover is provided with a first opening for the first push rod to pass through; one end of the first push rod is arranged in the closed cavity, and the other end of the first push rod extends out of the first opening; the first reset piece is arranged between one end of the first push rod, which is positioned in the closed cavity, and the end cover.
A limiting block, a second push rod and a second reset piece are further arranged in the sleeve, and a second opening is formed in the sleeve; one end of the second push rod is connected with the movement mechanism, and the other end of the second push rod extends out of the second opening;
the second reset piece is arranged on the second push rod and located between the movement mechanism and the limiting block.
The tail end of a first push rod of the movement mechanism is connected with a second push rod.
The end of the first push rod, which is positioned in the closed cavity, is a conical boss.
And a magnet yoke is also arranged outside the electromagnetic coil.
The moving mechanism is isolated from the closed cavity through a flexible sealing sheet.
Example two
Referring to fig. 2, an electrical protection device includes an electromagnetic coil, the device is located in the electromagnetic coil, the device includes a magnetocaloric mechanism and a motion mechanism, the magnetocaloric mechanism and the motion mechanism form a closed cavity, a phase change material is disposed in the closed cavity, and the motion mechanism moves relative to the magnetocaloric mechanism according to a state of the phase change material. The phase change material is paraffin.
The electric protection device further comprises a sleeve, the sleeve is located in the electromagnetic coil, the magnetic heating mechanism is located inside the sleeve, and the moving mechanism and the closed cavity are arranged inside the movable iron core.
The movement mechanism comprises a first push rod, an end cover and a first reset piece arranged on the first push rod; the end cover is provided with a first opening for the first push rod to pass through; one end of the first push rod is arranged in the closed cavity, and the other end of the first push rod extends out of the first opening; the first reset piece is arranged between one end of the first push rod, which is positioned in the closed cavity, and the end cover.
A limiting block, a second push rod and a second reset piece are further arranged in the sleeve, and a second opening is formed in the sleeve; one end of the second push rod is connected with the movement mechanism, and the other end of the second push rod extends out of the second opening;
the second reset piece is arranged on the second push rod and located between the movement mechanism and the limiting block.
The second push rod is connected to the magnetocaloric mechanism.
The end of the first push rod, which is positioned in the closed cavity, is a conical boss.
And a magnet yoke is also arranged outside the electromagnetic coil.
The moving mechanism is isolated from the closed cavity through a flexible sealing sheet.
In summary, the electrical protection device provided by the present invention integrates the thermal release and the magnetic release of the electrical product, replaces the conventional thermal element double (three) metal sheet, the moving iron core element and the oil cup element, reduces the soft connection for connecting the thermal element double (three) metal sheet element and the parts for adjusting the thermal element release position, such as the debugging screw and the nut, and has the following advantages:
the power consumption of the energy conversion device of the electrical product is reduced by more than half compared with the power consumption of the traditional electrical product; the heating is reduced, the current density is improved, the temperature rise of the electric product is reduced, and the electric product with the same size can be used by improving the current grade; the overload current judgment is sensitive, the protection precision is higher, the electric product can be debugged, the production is convenient, the production process time is reduced, the production qualification rate is improved, and the product manufacturing cost is reduced; the number of internal parts of the electric product, the number of copper materials, a product adjusting process and a welding process are reduced, energy conservation, environmental protection and consumption reduction can be realized, the electric product can realize adjustment-free automatic production, the investment of production equipment and a production line is reduced, and the production efficiency is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides an electric protection device, it includes solenoid, its characterized in that, the device is located solenoid, the device includes magnetism hot mechanism and motion, magnetism hot mechanism and motion form the closed chamber, be provided with phase change material in the closed chamber, motion according to the relative magnetism hot mechanism motion of phase change material's state.
2. The electrical protection device according to claim 1, further comprising a sleeve located inside the electromagnetic coil, wherein the magnetocaloric mechanism is located inside the sleeve, and wherein the moving mechanism and the closed chamber are located inside the plunger.
3. The electrical protection device of claim 2, wherein the movement mechanism comprises a first push rod, an end cap, and a first reset member disposed on the first push rod; the end cover is provided with a first opening for the first push rod to pass through; one end of the first push rod is arranged in the closed cavity, and the other end of the first push rod extends out of the first opening; the first reset piece is arranged between one end of the first push rod, which is positioned in the closed cavity, and the end cover.
4. The electrical protection device of claim 3, wherein a stop block, a second push rod and a second reset member are further disposed in the sleeve, and a second opening is disposed on the sleeve; one end of the second push rod is connected with the movement mechanism, and the other end of the second push rod extends out of the second opening;
the second reset piece is arranged on the second push rod and located between the movement mechanism and the limiting block.
5. The electrical protection device of claim 4, wherein the end of the first push rod of the movement mechanism is connected to the second push rod.
6. The electrical protection device of claim 4, wherein the second pushrod is coupled to the magnetocaloric mechanism.
7. An electrical protection device according to any one of claims 3 to 6 wherein the end of the first plunger within the closed chamber is a tapered boss.
8. An electrical protection device according to any one of claims 1 to 6 wherein a yoke is provided outside the electromagnetic coil.
9. An electrical protection device according to any one of claims 1 to 6 wherein the moving means is sealed from the chamber by a seal.
10. The electrical protection device of claim 9, wherein the seal is a flexible sealing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920815403.XU CN210223922U (en) | 2019-05-31 | 2019-05-31 | Electric protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920815403.XU CN210223922U (en) | 2019-05-31 | 2019-05-31 | Electric protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210223922U true CN210223922U (en) | 2020-03-31 |
Family
ID=69929125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920815403.XU Withdrawn - After Issue CN210223922U (en) | 2019-05-31 | 2019-05-31 | Electric protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210223922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364403A (en) * | 2019-05-31 | 2019-10-22 | 厦门莱能科技有限公司 | A kind of electric protective device |
-
2019
- 2019-05-31 CN CN201920815403.XU patent/CN210223922U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364403A (en) * | 2019-05-31 | 2019-10-22 | 厦门莱能科技有限公司 | A kind of electric protective device |
| CN110364403B (en) * | 2019-05-31 | 2021-09-28 | 厦门莱能科技有限公司 | Electric protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200331 Effective date of abandoning: 20210928 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200331 Effective date of abandoning: 20210928 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |