CN101819905A - Built-in protector for electric heating tube - Google Patents
Built-in protector for electric heating tube Download PDFInfo
- Publication number
- CN101819905A CN101819905A CN 201010142275 CN201010142275A CN101819905A CN 101819905 A CN101819905 A CN 101819905A CN 201010142275 CN201010142275 CN 201010142275 CN 201010142275 A CN201010142275 A CN 201010142275A CN 101819905 A CN101819905 A CN 101819905A
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- China
- Prior art keywords
- shell
- powder
- protector
- static contact
- base plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Thermally Actuated Switches (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a built-in protector for an electric heating tube, and relates to a safe electric protecting device. The built-in protector comprises a shell of which one end is opened, wherein an end cover is arranged at the opened end of the shell; a bottom plate, a bimetallic element, a moving contact, an insulating pedestal, a static contact piece, a static contact piece lead and a bottom plate lead are arranged in the shell; a powder baffling ring is arranged at the closed end and on the end cover of the shell respectively; the diameters of the powder baffling ring and the end cover are greater than that of the shell; and a groove is formed on the powder baffling ring at the closed end of the shell. Because the powder baffling ring is arranged at two ends of the shell respectively and the diameter of the powder baffling ring is greater than that of the shell, magnesium powder is only at the two ends of the protector when the magnesium powder is filled in the electric heating tube; and because the groove is formed on the powder baffling ring, a space for inward deformation of the powder baffling ring is reserved when the electric heating tube retracts, and the aim of controlling ambient medium temperature is fulfilled. The built-in protector has the advantages of simple and reasonable structure, stable and reliable action, high sensitivity, capability of automatically resetting, repeated use, low cost and the like.
Description
Technical field
The present invention relates to a kind of safety utilization of electric power protective device, relate in particular to a kind of when load is transshipped, can automatic shutdown circuit when overcurrent, short circuit built-in protector for electric heating tube.
Background technology
Existing electrical bar overheat protector is divided into recovery type electrical bar overheat protector and two kinds of the electrothermal tube overheat protectors of being with hand-reset.
Recovery type electrical bar overheat protector relates to the liquid electric heating equipment, is applicable to the overheated electronic protector of electrical heating elements of electric water boiler.Purpose is to provide a kind of overheated upper punch temperature to be lower than 200 ℃ and electrical bar can not be burnt, the fully automatic electric minor electrical bar overheat protector that can recover automatically after the outage.The protector circuit comprises temperature control switch forceful electric power loop and controllable silicon weak electrical loop, and the line bag control of the miniature relay of the output of controllable silicon weak electrical loop seals in the contact of the miniature relay in forceful electric power loop.But the cost of self is higher.
The electrothermal tube overheat protector of band hand-reset is equipped with the control contact mechanism in the housing cavity of resorption, the housing epicoele is equipped with bellows, forms temperature sensing device with the bellows handle and from the capillary that bellows prolongs away.Be wrapped in capillary on the electrothermal tube and under abnormal condition, be heated and trigger the bellows action, thereby, cut off the electrothermal tube power supply at short notice rapidly, reach the anti-dry purpose.But this overheat protector needs manually just can reset after cutting off the electricity supply, and reaches the effect of protection electrical equipment again.
The processing of electric heating tube is fill the magnesium powder in pipe after, to carry out draw technology, makes the magnesium powder in the pipe fine and close more.In the prior art; a kind of thermal protector is arranged, and patent No. ZL 200520077289.3, and patent name is a composite overflow and overheat protector; this patent is used common enclosure; before the electric heating tube draw, fill up the magnesium powder around the shell, behind the draw; because of the magnesium powder inwardly shrinks; shell has been used external force, the shell of protector is deformed, protector lost efficacy.
Summary of the invention
The objective of the invention is provides a kind of built-in protector for electric heating tube in order to overcome the deficiencies in the prior art, at electric heating tube after the can of magnesium powder; can not cause damage in the draw process to thermal protector; make it highly sensitive, good reliability can be reused.
The object of the present invention is achieved like this: a kind of built-in protector for electric heating tube, the shell that comprises an end opening, the openend of shell is provided with end cap, is provided with base plate, bimetallic element, moving contact, insulator foot, static contact, static contact lead, base plate lead in the shell; One end of bimetallic element is provided with moving contact, the other end is fixed on the base plate, be connected with the base plate lead on the base plate, insulator foot also is set on the base plate, static contact is set in the insulator foot, an end of static contact connects fixed contact, the other end of static contact is connected with the static contact lead, the blind end and the end cap of described shell are respectively equipped with powder retaining ring, and the diameter of powder retaining ring and end cap is greater than the diameter of shell, and the powder retaining ring of closed termination of outer cover is provided with groove.
The invention has the beneficial effects as follows: the two ends design of shell of the present invention has powder retaining ring; in electric heating tube magnesium powder pouring process; because of the diameter of powder retaining ring diameter greater than shell; magnesium powder a two ends at protector; and design is fluted on the powder retaining ring, in electric heating tube draw process, leaves to enterolithic space to powder retaining ring; thereby the function of protector is existed, reach purpose ambient temperature control.The present invention is designed for and is installed in the electric heating tube, has simple and reasonablely, and action is stable, reliable, highly sensitive, can automatically reset, and is reusable, low cost and other advantages.
Be connected with heater strip for convenience, be respectively equipped with wire guide on each powder retaining ring, the base plate lead passes from a wire guide, and the static contact lead passes from another wire guide.Gap between base plate lead and the powder retaining ring is by epoxy sealing, and the gap between static contact lead and the powder retaining ring can effectively stop the magnesium powder to enter enclosure interior by epoxy sealing, has prolonged useful life of the present invention greatly.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Among the figure, 1 shell, 2 bimetallic elements, 3 moving contacts, 4 insulator foots, 5 powder retaining rings, 6 epoxy resin, 7 static contact leads, 8 static contacts, 9 fixed contacts, 10 base plates, 11 base plate leads, 12 grooves, 13 wire guides, 14 end caps.
Embodiment
As shown in Figure 1; built-in protector for electric heating tube; comprise the shell 1 of an end opening, the openend of shell 1 is provided with end cap 14, is provided with base plate 10, bimetallic element 2, moving contact 3, insulator foot 4, static contact 8, static contact lead 7, base plate lead 11 in the shell 1.
Be respectively equipped with powder retaining ring 5 on the blind end of shell 1 and the end cap 14, the diameter of powder retaining ring 5 and end cap 14 is greater than the diameter of shell 1, and the powder retaining ring 5 of shell 1 blind end is provided with two grooves 12.
One end of bimetallic element 2 is provided with moving contact 3, the other end is fixed on the base plate 10, be connected with base plate lead 11 on the base plate 10, insulator foot 4 also is set on the base plate 10, static contact 8 is set in the insulator foot 4, one end of static contact 8 connects fixed contact 9, and the other end of static contact 8 is connected with static contact lead 7.
Be respectively equipped with wire guide 13 on each powder retaining ring 5, base plate lead 11 passes from a wire guide 13, and static contact lead 7 passes from another wire guide 13.
Gap between base plate lead 11 and the powder retaining ring 5 seals by epoxy resin 6, and the gap between static contact lead 7 and the powder retaining ring 5 seals by epoxy resin 6.
Claims (2)
1. built-in protector for electric heating tube comprises the shell of an end opening, and the openend of shell is provided with end cap, is provided with base plate, bimetallic element, moving contact, insulator foot, static contact, static contact lead, base plate lead in the shell; One end of bimetallic element is provided with moving contact, the other end is fixed on the base plate, be connected with the base plate lead on the base plate, insulator foot also is set on the base plate, static contact is set in the insulator foot, an end of static contact connects fixed contact, the other end of static contact is connected with the static contact lead, it is characterized in that: the blind end and the end cap of described shell are respectively equipped with powder retaining ring, and the diameter of powder retaining ring and end cap is greater than the diameter of shell, and the powder retaining ring of closed termination of outer cover is provided with groove.
2. built-in protector for electric heating tube according to claim 1 is characterized in that: be respectively equipped with wire guide on described each powder retaining ring, the base plate lead passes from a wire guide, and the static contact lead passes from another wire guide; Gap between described base plate lead and the powder retaining ring is by epoxy sealing, and epoxy sealing is passed through in the gap between described static contact lead and the powder retaining ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101422750A CN101819905B (en) | 2010-04-09 | 2010-04-09 | Built-in protector for electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101422750A CN101819905B (en) | 2010-04-09 | 2010-04-09 | Built-in protector for electric heating tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101819905A true CN101819905A (en) | 2010-09-01 |
| CN101819905B CN101819905B (en) | 2012-09-26 |
Family
ID=42654943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101422750A Active CN101819905B (en) | 2010-04-09 | 2010-04-09 | Built-in protector for electric heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101819905B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686451A1 (en) * | 1992-01-17 | 1993-07-23 | Elth Sa | Thermal safety device and heating elements with such a safety device built in |
| CN2225742Y (en) * | 1995-04-17 | 1996-04-24 | 江林 | Built-in marmen temp. control switch electric heating tube |
| US5607610A (en) * | 1994-04-05 | 1997-03-04 | Texas Instruments Incorporated | Compact protector |
| CN2390368Y (en) * | 1999-07-16 | 2000-08-02 | 费枣生 | Integrative temp.-controlled electric heating rod |
| CN1845643A (en) * | 2005-04-06 | 2006-10-11 | 中房集团新技术中心有限公司 | Tubular electric heating device with temperature control switch and overheating protection device |
| CN2874754Y (en) * | 2005-11-09 | 2007-02-28 | 朱天兵 | Composite overflow and overheat protector |
| CN101271607A (en) * | 2008-04-28 | 2008-09-24 | 扬州宝珠电器有限公司 | Parallel connection thermosensitive temperature-sensing combined switch |
| CN201698961U (en) * | 2010-04-09 | 2011-01-05 | 江苏精创电器有限公司 | Embedded protector for electric heating tube |
-
2010
- 2010-04-09 CN CN2010101422750A patent/CN101819905B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686451A1 (en) * | 1992-01-17 | 1993-07-23 | Elth Sa | Thermal safety device and heating elements with such a safety device built in |
| US5607610A (en) * | 1994-04-05 | 1997-03-04 | Texas Instruments Incorporated | Compact protector |
| CN2225742Y (en) * | 1995-04-17 | 1996-04-24 | 江林 | Built-in marmen temp. control switch electric heating tube |
| CN2390368Y (en) * | 1999-07-16 | 2000-08-02 | 费枣生 | Integrative temp.-controlled electric heating rod |
| CN1845643A (en) * | 2005-04-06 | 2006-10-11 | 中房集团新技术中心有限公司 | Tubular electric heating device with temperature control switch and overheating protection device |
| CN2874754Y (en) * | 2005-11-09 | 2007-02-28 | 朱天兵 | Composite overflow and overheat protector |
| CN101271607A (en) * | 2008-04-28 | 2008-09-24 | 扬州宝珠电器有限公司 | Parallel connection thermosensitive temperature-sensing combined switch |
| CN201698961U (en) * | 2010-04-09 | 2011-01-05 | 江苏精创电器有限公司 | Embedded protector for electric heating tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101819905B (en) | 2012-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YANGZHOU BAOZHU ELECTRIC APPLIANES CO., LTD. Free format text: FORMER OWNER: YANGZHOU JINGCHUANG VEHICLE ACCESSORIES CO., LTD. Effective date: 20120621 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120621 Address after: The 225806 Jiangsu County of Baoying province yinglang Industrial Zone Applicant after: Yangzhou Baozhu Electric Applianes Co., Ltd. Address before: 225806 crossing Industrial Zone, Jing River town, Baoying County, Jiangsu Applicant before: Yangzhou Jingchuang Vehicle Accessories Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |