CN1416770A - Magnet for temperature limiter of electric cooker and its production process - Google Patents
Magnet for temperature limiter of electric cooker and its production process Download PDFInfo
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- CN1416770A CN1416770A CN 01129900 CN01129900A CN1416770A CN 1416770 A CN1416770 A CN 1416770A CN 01129900 CN01129900 CN 01129900 CN 01129900 A CN01129900 A CN 01129900A CN 1416770 A CN1416770 A CN 1416770A
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- magnet
- electric cooker
- temperature limiter
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Abstract
The present invention discloses a magnet for electric cooker temperature limiter with N pole in the middle part and S pole on both upper and lower sides, which form a work surface of three-pole structure with the magnetic force in the middle pole being greater than that of the side poles. The making process includes preparing material, forming, sintering, surface treatment, inspection and magnetizing. The magnet has great attraction force, strengthened shock resistance, consistent acting temperature, high inserting force, strong anti-jamming capacity, low production cost and high assembly efficiency.
Description
The present invention relates to a kind of magnet for temperature limiter of electric cooker and processing technology.
At present, the structure of magnet for temperature limiter of electric cooker all adopts the version of one side two utmost points, and is not straight in order to solve magnet surface in the course of processing, generally uses grinding machine that magnet surface is polished.Powder can be penetrated in the magnet during owing to the polishing in the course of processing influences magnetic force, in use, is easy to generate powder, makes operating temperature inaccurate.The structure of this magnet is fallen into the magnetic conduction object in the temperature limiter because of carelessness in the electric cooker assembling process, can be adsorbed on magnet surface, and have a strong impact on the accuracy of operating temperature.
The object of the present invention is to provide a kind ofly have that the suction-combining force is big, shake-proof ability is strong with antijamming capability, the accurate consistent magnet for temperature limiter of electric cooker of operating temperature.
Another object of the present invention is to provide a kind of processing technology of magnet for temperature limiter of electric cooker.
For achieving the above object, a kind of magnet for temperature limiter of electric cooker of the present invention, its magnetic is made of the N utmost point, the S utmost point, the upper and lower both sides of magnet working face are same pole, the centre is the magnetic pole opposite with it, and constituting working surface is a three-stage structure, and the magnetic force of consequent pole is bigger than the magnetic pole on both sides.
The processing technology of magnet for temperature limiter of electric cooker of the present invention, its technological process is: system material → moulding → sintering → surface treatment → check → magnetize; Wherein surface treatment uses vibratory finishing machine to carry out polishing, magnetizes and uses five groups of magnetic circuit magnet chargers to magnetize, magnetize processing.
The present invention and prior art characteristics comparison sheet
| Item compared | Old money temperature limiter | Trendy temperature limiter | |
| Performance | The suction-combining force | Common the suction-combining force, shake-proof ability are not strong, easily cause the operating temperature instability. | Strengthened the suction-combining force, shake-proof ability is enhanced, the consistency of safety action temperature. |
| Insertion force | Insertion force can't improve, and has some setbacks when opening moving contact, causes arc phenomenon easily. | Effectively improve insertion force, thereby guarantee effectively to open moving contact. | |
| Endurance | The magnet surface owing to will polish, ferromagnetic powder meeting sucking-off surface in the use, cause that contact is bad between magnet, cause the suction-combining force to weaken, influenced operating temperature. | The magnet surface matcoveredn guarantees that long-term the use is difficult for producing powder. | |
| Protection | This magnetic circuit is the N/S utmost point, because N, S utmost point magnetic force equates, temperature limiter is packed in the electric cooker process, fall into the object (screw in the temperature limiter, Jie's sheet etc.) easily be adsorbed on the magnetic sheet surface, have a strong impact on operating temperature. | Owing to adopt N/S/N magnetic pole (or S/N/S), the magnetic force of S (N) utmost point is greater than N (S) utmost point 30%, strong in the middle of forming, both sides a little less than, make the object that in assembling process, falls into because of carelessness in the temperature limiter, be difficult for being adsorbed between two magnets. | |
| Cost | Magnet surface will grind processing. | Reduce the operation of mill processing, can save manufacturing expense (wage, water rate, the electricity charge). | |
| Efficient | Temperature limiter is installed on the electric cooker lever time, because the pull bar of temperature limiter can be not vertical automatically, steady brace is cumbersome during to lever, has influenced assembling speed. | The temperature limiter pull bar can be holded up automatically, can be installed to pull bar on the electric cooker lever easily, improve efficiency of assembling. | |
Fig. 1 is the structural representation of the concrete a kind of embodiment of magnet of the present invention.
Fig. 2 is magnet processing process figure of the present invention.
Of the present invention a kind of magnet for temperature limiter of electric cooker as shown in Figure 1, its magnetic is made of the N utmost point S utmost point, and the upper and lower both sides of magnet 1 itself are same pole, and the centre is the magnetic pole opposite with it, constituting working surface is a three-stage structure, and the magnetic force of middle magnetic pole is bigger than the magnetic pole on both sides.The processing technology of magnet for temperature limiter of electric cooker of the present invention as shown in Figure 2, its technological process is: system material → moulding → sintering → surface treatment → check → magnetize; Wherein surface treatment uses vibratory finishing machine to carry out polishing, magnetizes and uses five groups of magnetic circuit magnet chargers to magnetize, magnetize processing.
If after fitting on the temperature limiter with the magnet cartridge at common one side the two poles of the earth, in assembling electric cooker process, fall into the magnetic conduction object in the temperature limiter because of carelessness, can be adsorbed on the magnetic sheet surface, and have a strong impact on the accuracy of operating temperature; When the permanent magnet surface is magnetized with 3 utmost points, the magnetic force of the S utmost point can be very bigger than both sides N in the middle of the magnet, can significantly reduce the generation of this situation.And the stainless steel pull bar is vertically holded up automatically, when temperature limiter is installed by electric cooker producer, can be installed to pull bar on the lever of electric cooker easily, raise the efficiency.Also have this magnetic circuit can increase the suction-combining force, the insertion force parameter of temperature limiter, thereby improve the performance of temperature limiter.
Claims (2)
1, a kind of magnet for temperature limiter of electric cooker, its magnetic is made of the N utmost point, the S utmost point, it is characterized in that: the upper and lower both sides of magnet (1) itself are same pole, and the centre is the magnetic pole opposite with it, having constituted working surface is a three-stage structure, and the magnetic force of middle magnetic pole is bigger than the magnetic pole on both sides.
2, the processing technology of magnet for temperature limiter of electric cooker according to claim 1 is characterized in that: its technological process is: system material → moulding → sintering → surface treatment → check → magnetize; Wherein surface treatment uses vibratory finishing machine to carry out polishing, magnetizes and uses five groups of magnetic circuit magnet chargers to magnetize, magnetize processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129900 CN1416770A (en) | 2001-11-09 | 2001-11-09 | Magnet for temperature limiter of electric cooker and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129900 CN1416770A (en) | 2001-11-09 | 2001-11-09 | Magnet for temperature limiter of electric cooker and its production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1416770A true CN1416770A (en) | 2003-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01129900 Pending CN1416770A (en) | 2001-11-09 | 2001-11-09 | Magnet for temperature limiter of electric cooker and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1416770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456478A (en) * | 2010-10-22 | 2012-05-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Magnet and processing method and magnetron sputtering source thereof |
| CN110353463A (en) * | 2018-03-26 | 2019-10-22 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
-
2001
- 2001-11-09 CN CN 01129900 patent/CN1416770A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456478A (en) * | 2010-10-22 | 2012-05-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Magnet and processing method and magnetron sputtering source thereof |
| CN110353463A (en) * | 2018-03-26 | 2019-10-22 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
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