CN202363360U - Normal open thermosensitive magnetic switch - Google Patents
Normal open thermosensitive magnetic switch Download PDFInfo
- Publication number
- CN202363360U CN202363360U CN201120377107XU CN201120377107U CN202363360U CN 202363360 U CN202363360 U CN 202363360U CN 201120377107X U CN201120377107X U CN 201120377107XU CN 201120377107 U CN201120377107 U CN 201120377107U CN 202363360 U CN202363360 U CN 202363360U
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- CN
- China
- Prior art keywords
- ring
- temperature sensitive
- magnetic ring
- tongue tube
- thermosensitive
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a normal open thermosensitive magnetic switch which is composed of a tongue tube (1), a permanent magnetic ring (2), and a thermosensitive soft magnetic ring (3), wherein the permanent magnetic ring (2) is sleeved on the center of the tongue tube (1), and the thermosensitive soft magnetic ring (3) is sleeved on the outside of the permanent magnetic ring (2). The height (the length along the length direction of the tongue tube) of the thermosensitive soft magnetic ring (3) is bigger than the height of the permanent magnetic ring (2). A circular gap which is between the thermosensitive soft magnetic ring (3) and the tongue tube (1) is filled with an epoxy resin (4) which is mixed with a thermosensitive soft-magnetic power for sealing, so the magnetic leakage between the permanent magnetic ring (2) and the thermosensitive soft magnetic ring (3) can be reduced, and consequently the delayed temperature precision and the action temperature precision of the thermosensitive magnetic switch can be improved. Except for the tongue tube, the normal open thermosensitive magnetic switch only needs two parts, three parts less than a conventional normal open thermosensitive magnetic switch, so the structure is compact, and the miniaturization is easy to realize.
Description
Technical field
The utility model relates to a kind of temperature detect switch (TDS), relates in particular to the temperature sensitive magnetic switch of a kind of open type.
Background technology
Temperature detect switch (TDS) commonly used has thermistor, bimetal leaf and temperature sensitive magnetic switch.Because temperature sensitive magnetic switch operation precision far above bimetal leaf, in addition, is compared with thermistor, itself just has the switch motion function temperature sensitive magnetic switch, and is simple and reliable for structure.Therefore, temperature sensitive magnetic switch is just obtaining use more and more widely in fields such as automobile, office equipment, household electrical appliance.
Temperature sensitive magnetic switch is made up of tongue tube, soft magnetism magnet ring, permanent magnetic ring etc. usually, and its operation principle is that the soft magnetic material Curie point is designed near required controlled temperature point; Because near Curie point, the magnetic permeability of soft magnetic material sharply changes, when ambient temperature is passed through Curie temperature by low rising; The magnetic permeability of soft magnetism ring descends rapidly; Magnetic flux density through tongue tube reduces, and the state of tongue tube is changed, and reed is switched on or switched off; When ambient temperature was passed through Curie temperature by the height reduction, the magnetic permeability of soft magnetism ring increased sharply, and the magnetic flux density increase through tongue tube changes the state of tongue tube, and reed is switched on or switched off, thereby realizes its temp control switch state.
Temperature sensitive magnetic switch comprises open type and closed type.Wherein be meant that for open type the contact of temperature sensitive magnetic switch stays open state, circuit breaker when ambient temperature during less than the temperature set; When ambient temperature during greater than the temperature set, the closing of contact of temperature sensitive magnetic switch, circuit is connected.
At present; The temperature sensitive magnetic switch of existing open type has two kinds of frame modes; A kind of mode is: on tongue tube, put the air gap sheet that the non-magnet_conductible material of 1 temperature-sensitive soft magnetism magnet ring, 2 permanent magnetic rings and 2 ring-types is made; Wherein temperature-sensitive soft magnetism magnet ring is enclosed within the central authorities of tongue tube, and 2 permanent magnetic rings are positioned at the both sides of temperature-sensitive soft magnetism magnet ring, and 2 ring-type air gap sheets lay respectively between permanent magnetic ring and the soft magnetism magnet ring.Another kind of mode is: on tongue tube, put the air gap sheet that the non-magnet_conductible material of 2 temperature-sensitive soft magnetism magnet rings, 2 permanent magnetic rings and 1 ring-type is made; Wherein the air gap sheet is enclosed within the central authorities of tongue tube; 2 soft magnetism magnet rings are positioned at the both sides of air gap sheet, and 2 permanent magnetic rings lay respectively at the outside of 2 soft magnetism magnet rings.
For this dual mode, constitute the temperature sensitive magnetic switch of open type, except that tongue tube, also need 5 parts, because parts are more, be unfavorable for miniaturization, therefore, the temperature sensitive magnetic switch general size of open type is bigger.In addition, by the existing temperature detect switch (TDS) that above-mentioned dual mode constitutes, its temperature hysteresis, usually≤7 ℃, full accuracy can only reach 1 ℃; The operating temperature precision, usually≤± 3.5 ℃, full accuracy can only reach ± and 1 ℃, and also rated current is big more, and the operating temperature precision is poor more.Therefore, its temperature hysteresis of existing temperature detect switch (TDS) and operating temperature precision can't reach≤0.5 ℃ level.
The utility model content
The utility model technical problem to be solved is the deficiency that overcomes prior art, provide a kind of can miniaturization, and temperature hysteresis and operating temperature precision can be reached≤0.5 ℃ the temperature sensitive magnetic switch of open type.
The technical scheme that the utility model adopted is: the temperature sensitive magnetic switch of a kind of open type is characterized in that this temperature sensitive magnetic switch is made up of tongue tube (1), permanent magnetic ring (2), temperature sensitive soft magnetism magnet ring (3).Wherein, permanent magnetic ring (2) is enclosed within the central authorities of tongue tube (1), and temperature sensitive soft magnetism magnet ring (3) is enclosed within the periphery of permanent magnetic ring (2).The height of temperature sensitive soft magnetism magnet ring (3) (along the length of tongue tube length direction) is greater than the height of permanent magnetic ring (2).The annular spaces that between temperature sensitive soft magnetism magnet ring (3) and tongue tube (1), occurs is with the epoxy resin embedding (4) that is mixed with temperature sensitive soft magnetism powder.The leakage field between permanent magnetic ring (2) and the temperature sensitive soft magnetism magnet ring (3) be can reduce like this, thereby the temperature hysteresis and the operating temperature precision of temperature sensitive magnetic switch improved.
The beneficial effect of the utility model is: because the performance of the performance parameter of the operating temperature precision of temperature sensitive magnetic switch and temperature hysteresis and temperature sensitive soft magnetic material and tongue tube is relevant, wherein temperature sensitive soft magnetic material performance parameter comprises: the conductive coefficient of the magnetic permeability of soft magnetic material, near the magnetic permeability rate of change Curie temperature and soft magnetism magnetic core and size etc.
The temperature sensitive magnetic switch of a kind of open type of the utility model; Except that tongue tube, only need 2 parts, lack 3 parts than the temperature sensitive magnetic switch of traditional open type; Compact conformation; Realize miniaturization more easily, for example: the length of this magnetic switch is compared with the temperature sensitive magnetic switch of traditional open type, can shorten 2/3rds.Because permanent magnetic ring directly is enclosed within the central authorities of tongue tube; Nearest with reed contact; Its action of a magnetic field effect is the strongest; Thereby the size of permanent magnetic ring can further reduce, and traditional temperature sensitive magnetic switch adopts the permanent magnetic ring of Φ 6* Φ 3 usually, only needs to adopt the magnet ring of Φ 4* Φ 3 to get final product in the utility model.The size of same soft magnetism magnet ring also can further reduce; Traditional temperature sensitive magnetic switch adopts the temperature sensitive soft magnetism magnet ring of Φ 6* Φ 3 usually; The soft magnetism magnet ring that only needs in the utility model to adopt Φ 6* Φ 4 gets final product (if adopt higher permanent magnetic material and the higher soft magnetic material of magnetic permeability of magnetic energy product, then the size of permanent magnetic ring and soft magnetism magnet ring can also further reduce).Because soft magnetism magnet ring size reduces, its magnet ring wall thickness attenuation makes temperature sensitive soft magnetism magnet ring more responsive to the response of temperature.. in addition; The annular spaces that between temperature sensitive soft magnetism magnet ring (3) and tongue tube (1), occurs; With the epoxy resin embedding (4) that is mixed with temperature sensitive soft magnetism powder; Can reduce the leakage field between permanent magnetic ring (2) and the temperature sensitive soft magnetism magnet ring (3) like this, thereby the temperature hysteresis of the temperature sensitive magnetic switch of open type and operating temperature precision are further improved, reach≤0.5 ℃ level.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the temperature sensitive magnetic switch structural representation of a kind of open type of the utility model.
Embodiment
The temperature sensitive magnetic switch of a kind of open type, its structure such as Fig. 1, this temperature sensitive magnetic switch is made up of tongue tube (1), permanent magnetic ring (2), temperature sensitive soft magnetism magnet ring (3).Wherein, permanent magnetic ring (2) is enclosed within the central authorities of tongue tube (1), and temperature sensitive soft magnetism magnet ring (3) is enclosed within the periphery of permanent magnetic ring (2).The height of temperature sensitive soft magnetism magnet ring (3) (along the length of tongue tube length direction) is greater than the height of permanent magnetic ring (2).The annular spaces that between temperature sensitive soft magnetism magnet ring (3) and tongue tube (1), occurs is with the epoxy resin embedding (4) that is mixed with temperature sensitive soft magnetism powder.The leakage field between permanent magnetic ring (2) and the temperature sensitive soft magnetism magnet ring (3) be can reduce like this, thereby the temperature hysteresis and the operating temperature precision of temperature sensitive magnetic switch improved.
In order further to improve the temperature hysteresis and the operating temperature precision of the temperature sensitive magnetic switch of a kind of open type of the utility model; Can also improve the structure of the temperature sensitive soft magnetism magnet ring (3) among Fig. 1; Change them into 2 semicircular ring; Use then relevant resin (for example epoxy resin or silica gel) or bonding agent be fixed in permanent magnetic ring (2) around, can also keep suitable space between 2 semicircular ring and the permanent magnetic ring (2).Compare with the temperature sensitive magnetic switch of traditional open type; This structure has increased contact area (the temperature sensitive magnetic switch of traditional open type of temperature sensitive soft magnetism magnetic core and environment; Its temperature sensitive soft magnetism magnet ring has only outmost barrel surface just to contact with environment); Make temperature sensitive soft magnetic material more responsive, thereby can further improve the temperature hysteresis and the operating temperature precision of temperature sensitive magnetic switch the variations in temperature of environment.
Claims (2)
1. the temperature sensitive magnetic switch of open type is characterized in that, this temperature sensitive magnetic switch is made up of tongue tube (1), permanent magnetic ring (2), temperature sensitive soft magnetism magnet ring (3); Wherein, permanent magnetic ring (2) is enclosed within the central authorities of tongue tube (1), and temperature sensitive soft magnetism magnet ring (3) is enclosed within the periphery of permanent magnetic ring (2); The height of temperature sensitive soft magnetism magnet ring (3) is greater than the height of permanent magnetic ring (2); The annular spaces that between temperature sensitive soft magnetism magnet ring (3) and tongue tube (1), occurs is with the epoxy resin embedding (4) that is mixed with temperature sensitive soft magnetism powder.
2. according to the temperature sensitive magnetic switch of the said a kind of open type of claim 1; It is characterized in that: temperature sensitive soft magnetism magnet ring (3) can also change 2 semicircular ring into; Then with epoxy resin or silica gel be fixed in permanent magnetic ring (2) around, can also keep suitable space between 2 semicircular ring and the permanent magnetic ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120377107XU CN202363360U (en) | 2011-10-09 | 2011-10-09 | Normal open thermosensitive magnetic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120377107XU CN202363360U (en) | 2011-10-09 | 2011-10-09 | Normal open thermosensitive magnetic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363360U true CN202363360U (en) | 2012-08-01 |
Family
ID=46574524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120377107XU Expired - Fee Related CN202363360U (en) | 2011-10-09 | 2011-10-09 | Normal open thermosensitive magnetic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202363360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047475A (en) * | 2015-08-12 | 2015-11-11 | 佛山市川东磁电股份有限公司 | Composite magnetic tube and thermosensitive magnetic control switch |
-
2011
- 2011-10-09 CN CN201120377107XU patent/CN202363360U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047475A (en) * | 2015-08-12 | 2015-11-11 | 佛山市川东磁电股份有限公司 | Composite magnetic tube and thermosensitive magnetic control switch |
| CN105047475B (en) * | 2015-08-12 | 2017-11-10 | 佛山市川东磁电股份有限公司 | A kind of compound magnetic tube and a kind of temperature-sensitive magnetic-control switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20141009 |
|
| EXPY | Termination of patent right or utility model |