CN202307686U - Hand-reset magnetic temperature limiter - Google Patents
Hand-reset magnetic temperature limiter Download PDFInfo
- Publication number
- CN202307686U CN202307686U CN2011204343341U CN201120434334U CN202307686U CN 202307686 U CN202307686 U CN 202307686U CN 2011204343341 U CN2011204343341 U CN 2011204343341U CN 201120434334 U CN201120434334 U CN 201120434334U CN 202307686 U CN202307686 U CN 202307686U
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- China
- Prior art keywords
- temperature
- seesaw
- outer cover
- reset
- leverage
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Abstract
The utility model relates to a hand-reset magnetic temperature limiter which includes a support and a temperature-sensing triggering device. The temperature-sensing triggering device includes a temperature-sensing base plate, a soft magnet which is provided with a preset Curie temperature spot, a permanent magnet, a leverage mechanism, a reset push rod, and an outer cover. The temperature-sensing base plate is fixedly connected with the support. The soft magnet is in a contact connection with the temperature-sensing base plate. A first force arm end of the leverage mechanism is connected with a protective moving contact of an elastic metal sheet, and a second force arm end of the leverage mechanism is in a magnetic attracting connection with the soft magnet via the permanent magnet. The outer cover is fixedly connected with the temperature-sensing base plate. A top lid of the outer cover is arranged above the second force arm of the leverage mechanism. The reset push rod is slidingly arranged in a through hole of the top lid of the outer cover. The hand-reset magnetic temperature limiter can solve the problems of complex structure, poor temperature sensitivity, and narrow selection scope existing in a conventional temperature limiter. The hand-reset magnetic temperature limiter has the advantages of sensitive overtemperature action, excellent working stability, high security and reliability, and wide temperature selection scope.
Description
Technical field
The utility model belongs to the temperature limiter technical field, is specifically related to hand-reset magnetic temperature limiter.
Background technology
At present; The ultra ceiling temperature controller (hereinafter to be referred as temperature limiter) that overheated open circuit protection on the electric heating appliance adopts adopts temperature limiter such as the Kick type or the flashing temperature limiter of thrermostatic bimetal-plate more, and the precision that exists production is not high; Long-term serviceability temperature drift obviously; The electric current warming-up effect is bigger, and the bimetallic part contacts problems such as not direct with heater, and reliability and working life are not high.
The utility model content
The purpose of the utility model is to overcome existing temperature limiter precision deficiency; Temperature drift; Load capacity a little less than; The problem that security reliability is not high proposes a kind of hand-reset magnetic temperature limiter, and this magnetic temperature limiter is simple in structure, be active in one's movements during overtemperature, temperature accuracy height, good operating stability, security reliability height and temperature range of choice are wide.
In order to solve the problems of the technologies described above, the utility model has adopted following technical proposals:
Hand-reset magnetic temperature limiter according to the utility model; It comprises bearing and temperature-sensitive trigger equipment; The elastic sheet metal of temperature-sensitive trigger equipment, band protection moving contact and the fixed touch plate that contact is decided in the band protection are set, but the protection moving contact is decided the electrical contact that contact constitutes a pair of break-make power supply with protection, it is characterized in that on bearing; Described temperature-sensitive trigger equipment comprises the temperature-sensitive substrate, has the soft magnetic bodies of predetermined Curie point, permanent magnet, leverage, push rod and outer cover reset; Said temperature-sensitive substrate is fixedly connected with bearing, and said soft magnetic bodies is connected with the temperature-sensitive substrate contacts, and first arm of force end of said leverage is connected with the protection moving contact of said elastic sheet metal; Second arm of force end of said leverage connects through the corresponding magnetic with said soft magnetic bodies of described permanent magnet; Said outer cover is fixedly connected with the temperature-sensitive substrate, and the top cover of said outer cover is arranged on second arm of force end top of said leverage, and the said push rod that resets is slidingly arranged in the through hole of said outer cover top cover.Further, described leverage comprises seesaw and seesaw bearing, and first arm of force end of said seesaw is connected with the free end of said elastic sheet metal through the insulation porcelain knob, and said permanent magnet is arranged on second arm of force end of said seesaw.
Described seesaw bearing band V-type groove.Described seesaw is " Z " word shape, and the fulcrum shaft at said seesaw middle part is located in the said V-type groove.
The utlity model has following beneficial effect:
1, the magnetic trigger equipment in the utility model is a stand-alone configuration, can be separately or integrally with the supporting application of different electric heating appliances.
2, utilize the Curie point temperature-sensitive of soft magnetic bodies, optional temperature spot is many, and temperature upper limit can reach 400 ℃, can satisfy the needs of different temperatures upper limit product, and is applied widely.
3, the good stability of soft magnetic bodies Curie point, security reliability is high.The batch high conformity, precision is high.
4, the temperature-sensitive substrate is pasting the wall of heater or electric heating vessel, and the soft magnet of temperature-sensitive adopts the direct contact type temperature-sensitive, is active in one's movements when making overtemperature.
5, but the push rod that resets is the repetitive operation mechanism of manual reversion, and soft magnetic bodies can not influence its performance because of electric current and timeliness.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one in normal condition;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the structural representation of the utility model embodiment one when the overtemperature operate condition;
Fig. 5 is the structural representation that the utility model is installed on electric kettle.
Fig. 6 is the local enlarged diagram of Fig. 5.
Reference numeral:
1. outer cover 2. temperature-sensitive substrates 3. soft magnetic bodies
4. permanent magnet 5. seesaw 5.1. seesaw bearings
6. insulation porcelain knob 8. elastic sheet metal 8.1. protect moving contact
9. contact 10. rivets are decided in fixed touch plate 9.1. protection
13, insulating pot 13.1, kettle diapire 13.2, lever
13.20, trigger end 13.21, button end
Embodiment
Referring to Fig. 1～Fig. 4; The utility model comprises bearing 12, temperature-sensitive trigger equipment, elastic sheet metal 8 and fixed touch plate 9; Free end at elastic sheet metal 8 is provided with protection moving contact 8.1; One end of fixed touch plate 9 is provided with protection and decides contact 9.1, but the electrical contact that the protection moving contact 8.1 of contact 9.1 and elastic sheet metal 8 constitutes a pair of break-make power supply is decided in protection.The permanent magnet 4 that described temperature-sensitive trigger equipment includes temperature-sensitive substrate 2, has the soft magnetic bodies 3 of predetermined Curie point, connect with soft magnetic bodies 3 corresponding magnetic, leverage, the outer cover 1 be made up of seesaw 5 and seesaw bearing 5.1, push rod 11 resets.
Temperature-sensitive substrate 2 is fixedly connected with bearing 12; The outer cover 1 of plastics is fixed on the temperature-sensitive substrate 2, and second arm of force end of the push rod 11 that will reset, seesaw 5, soft magnetic bodies 3, permanent magnet 4 all cover in it, and outer cover 1 is fixed soft magnetic bodies 3 on temperature-sensitive substrate 2; Soft magnetic bodies 3 and permanent magnet 4 corresponding magnetic; Permanent magnet 4 is fixed on second arm of force end of seesaw 5 through rivet 10, and the upper end of the push rod 11 that resets passes the through hole on the outer cover 1 and exposes, so that hand-reset; The lower end of push rod 11 of resetting contacts with second arm of force end surfaces of seesaw 5, and the push rod 11 that can when second arm of force end perk, promote to reset moves up; The push rod 11 that resets is plastic bar.First arm of force end of seesaw 5 is fixedly connected with the free end of elastic sheet metal 8 through insulation porcelain knob 6; Seesaw 5 is the stainless steel substrates of " Z " shape shape, and seesaw bearing 5.1 is the plastic seating of band V-type groove, and seesaw bearing 5.1 is arranged on the temperature-sensitive substrate 2, and the fulcrum shaft at seesaw 5 middle parts is located in the V-shaped groove.
The soft magnetic bodies with predetermined Curie point 3 of the utility model is temperature sensitive zinc-manganese Ferrite Material, and temperature-sensitive substrate 2 is the non-magnetic metallic plate, like aluminium, copper or corrosion resistant plate.The material of outer cover 1 also can be pottery or nonmagnetic material except that plastics.The material of seesaw 5 is non-magnetic metal material such as stainless steel, and the material of the seesaw bearing 5.1 and the push rod 11 that resets also can be pottery or nonmagnetic material except that plastics.
The course of work of the utility model is described now: when electric heater heats in the normal working temperature scope; The soft magnetic bodies 3 that have certain Curie point this moment is in below the Curie point; Have low magnetic resistance and high magnetic permeability; Thereby permanent magnet 4 is pull-in on the soft magnetic bodies 3 together with seesaw 5, and protection is decided contact 9.1 and is in contact condition with protection moving contact 8.1, makes the electric heating element energising (referring to Fig. 1, Fig. 2) of electric heater; When electric heater reached the preset upper limit temperature, when promptly surpassing the Curie point of soft magnetic bodies 3, soft magnetic bodies 3 can become high magnetic resistance and low magnetic permeability state; Thereby lose magnetic attraction to permanent magnet 4; Downwards promote insulation porcelain knob 6 owing to the elastic force effect of elastic sheet metal 8 this moment, thereby first arm of force end of seesaw 5 is moved downward around fulcrum; Make protection moving contact 8.1 decide contact 9.1 and disengage, thereby cut off circuit to stop to continue heating with protection.Simultaneously, second arm of force end of seesaw 5 upwarps, and the push rod 11 that resets is upwards boosted, and permanent magnet 4 also disengages (referring to Fig. 4) with soft magnetic bodies 3.
When the temperature of electric heater returns to normal temperature; This moment as need electric heater heating then needs the hand push push rod 11 that resets, and this moment is because soft magnetic bodies 3 has dropped to below the Curie temperature; Through manually pressing the push rod 11 that resets; The permanent magnet 4 of second arm of force end that makes seesaw 5 is once again by soft magnetic bodies 3 adhesives, thereby the contact condition of contact 9.1 decide in recovery and protection moving contact 8.1 and protection, and the electric heating element energising of electric heater is heated.Dropped to Curie point when following in soft magnetic bodies 3,, must make the magnetic attraction of the elastic force of elastic sheet metal 8, made permanent magnet 4 when leaving state, can not inhaled back voluntarily greater than soft magnetic bodies 3 for making its not adhesive permanent magnet 4 voluntarily; And when attracting state, the magnetic attraction of soft magnetic bodies 3 must be greater than the elastic force of elastic sheet metal 8.About the design of soft magnetic bodies 3 with the distance of permanent magnet 4 when separating, can not inhaled back by soft magnetic bodies 3, it is principle that the contact breaking gap satisfies the security appliance standard.
Fig. 5 is the structural representation that the utility model is installed on electric kettle, and Fig. 6 is the local enlarged diagram of Fig. 5.As shown in the figure, the temperature-sensitive substrate 2 of hand-reset magnetic temperature limiter is close at the bottom of the stainless steel kettle 13.1, makes temperature-sensitive substrate 2 and soft magnetic bodies 3 directly experience water temperature at the bottom of the kettle, and the Curie temperature of soft magnetic bodies 3 can be selected the boiling temperature of water.Fig. 5 representes that electric kettle is in the normal heating "on" position, and soft magnetic bodies 3 is in the magnetic state with permanent magnet 4.After water reaches boiling temperature; Soft magnetic bodies 3 loses magnetism; Under the elastic sheet metal that has moving contact 8 elastic force effects, electric contact 8.1 separates outage with 9.1, stops heating (referring to Fig. 4); The reset this moment trigger end 13.20 of lever 13.2 of push rod 11 downward pushing tow kettles upwarps button end 13.21.When needs heated water, the button end 13.21 downwards, made trigger end 13.20 upwards promote to reset push rod 11, then made soft magnetic bodies 3 and permanent magnet 4 recover the magnetic state, and then electric contact is connected, beginning heating process.
This kind temperature limiter is not limited to be applied to the control that insulating pot boils water, and also can be applied in the liquid electric heater tool of other type, realizes the accurate control that all temps requires.Certainly, just list here and lifted a kind of preferred implementation, the protection category that other is equal to, structure roughly the same all should belong to this patent repeats no more here.
Claims (4)
1. hand-reset magnetic temperature limiter; Comprise bearing and temperature-sensitive trigger equipment; The elastic sheet metal of temperature-sensitive trigger equipment, band protection moving contact and the fixed touch plate that contact is decided in the band protection are set, but the protection moving contact is decided the electrical contact that contact constitutes a pair of break-make power supply with protection, it is characterized in that on bearing; Described temperature-sensitive trigger equipment comprises the temperature-sensitive substrate, has the soft magnetic bodies of predetermined Curie point, permanent magnet, leverage, push rod and outer cover reset; Said temperature-sensitive substrate is fixedly connected with bearing, and said soft magnetic bodies is connected with the temperature-sensitive substrate contacts, and first arm of force end of said leverage is connected with the protection moving contact of said elastic sheet metal; Second arm of force end of said leverage connects through the corresponding magnetic with said soft magnetic bodies of described permanent magnet; Said outer cover is fixedly connected with the temperature-sensitive substrate, and the top cover of said outer cover is arranged on second arm of force end top of said leverage, and the said push rod that resets is slidingly arranged in the through hole of said outer cover top cover.
2. temperature limiter according to claim 1; It is characterized in that; Described leverage comprises seesaw and seesaw bearing, and first arm of force end of said seesaw is connected with the free end of said elastic sheet metal through the insulation porcelain knob, and said permanent magnet is arranged on second arm of force end of said seesaw.
3. temperature limiter according to claim 1 and 2 is characterized in that, described seesaw bearing band V-type groove.
4. temperature limiter according to claim 3, described seesaw are " Z " word shape, and the fulcrum shaft at said seesaw middle part is located in the said V-type groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204343341U CN202307686U (en) | 2011-11-04 | 2011-11-04 | Hand-reset magnetic temperature limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204343341U CN202307686U (en) | 2011-11-04 | 2011-11-04 | Hand-reset magnetic temperature limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202307686U true CN202307686U (en) | 2012-07-04 |
Family
ID=46376529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204343341U Expired - Lifetime CN202307686U (en) | 2011-11-04 | 2011-11-04 | Hand-reset magnetic temperature limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202307686U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036279A (en) * | 2017-04-17 | 2017-08-11 | 昆明理工大学 | A kind of industrial solar heating engineering system with wind-force device for supplying |
| CN110886893A (en) * | 2019-12-02 | 2020-03-17 | 厚力德机器（杭州）有限公司 | Electroless vacuum toilet bowl lever combined opening valve structure and using method thereof |
| CN111149185A (en) * | 2017-07-28 | 2020-05-12 | 尹楚尔Ip有限责任公司 | Improved switch |
-
2011
- 2011-11-04 CN CN2011204343341U patent/CN202307686U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036279A (en) * | 2017-04-17 | 2017-08-11 | 昆明理工大学 | A kind of industrial solar heating engineering system with wind-force device for supplying |
| CN107036279B (en) * | 2017-04-17 | 2020-01-10 | 昆明理工大学 | Industrial solar hot water engineering system with wind power supply device |
| CN111149185A (en) * | 2017-07-28 | 2020-05-12 | 尹楚尔Ip有限责任公司 | Improved switch |
| CN111149185B (en) * | 2017-07-28 | 2022-03-25 | 尹楚尔Ip有限责任公司 | Improved switch |
| CN110886893A (en) * | 2019-12-02 | 2020-03-17 | 厚力德机器（杭州）有限公司 | Electroless vacuum toilet bowl lever combined opening valve structure and using method thereof |
| CN110886893B (en) * | 2019-12-02 | 2021-08-13 | 厚力德机器（杭州）有限公司 | Electroless vacuum toilet bowl lever combined opening valve structure and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |