CN107610976B - A kind of hand reset liquid expansion temp limiter - Google Patents
A kind of hand reset liquid expansion temp limiter Download PDFInfo
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- CN107610976B CN107610976B CN201711049726.4A CN201711049726A CN107610976B CN 107610976 B CN107610976 B CN 107610976B CN 201711049726 A CN201711049726 A CN 201711049726A CN 107610976 B CN107610976 B CN 107610976B
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- spring
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- stationary contact
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- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 5
- 239000002775 capsule Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Thermally Actuated Switches (AREA)
Abstract
A kind of hand reset liquid expansion temp limiter is equipped with the stationary contact bridge in height two-stage sheet between static contact bottom and insulation shell bottom, static contact is made to be in the elastic suspension free state for leaving insulation shell bottom.The temperature limiter can realize hand-reset in the case where temperature-sensitive temperature reduces few than limiting warm operating temperature, it is suitable for limiting the home electrical heater that warm operating temperature is 60 DEG C~120 DEG C.
Description
Technical field
The present invention relates to temperature controller technical field, in particular to a kind of hand reset liquid expansion temp limiter.
Background technique
Temperature limiter is widely used on the home electrical heaters such as electric warm-air machine, electric heater, electric oven, electric heating fryer, it
It is used in series with temperature controller, just in case temperature controller failure, it can cut off the power in time, realize overtemperature prote.Liquid expansion type limit temperature
The working principle of device is: the liquid working substance expanded by heating being enclosed in temperature sensing package, being transmitted to bellows through capillary generates bellows
Displacement pushes microswitch to disconnect.
Chinese patent CN2582147Y " hand reset liquid expansion temp limiter with leakage protection structure " is disclosed
A kind of hand reset liquid expansion temp limiter with leakage protection structure, but the temperature limiter has the following deficiencies: limit
Due to overtemperature prote after cut-out switch, temperature-sensitive temperature can have dropped warm device, push rod bounced back it is some, but due to movable contact spring
Inner sheet because by bow spring tension force effect due to generate slight curves deformation, if pressing release link at this time, though by moving contact with it is quiet
Contact, bow spring left side fulcrum, that is, movable contact spring inner sheet edge of a knife are still below the right fulcrum O, the i.e. right edge of a knife of movable contact spring outline border, bend spring
Fail to overturn, moving contact moves upwards again after release hand makes to switch disjunction, therefore fails to complete hand-reset.Only work as temperature-sensitive
Temperature continues to reduce, and push rod bounces back more, and the left edge of a knife of movable contact spring inner sheet, that is, left fulcrum raises get Geng Gao, presses release link at this time
Can make bend spring left side fulcrum be higher than the right fulcrum, bow spring could overturn, at this time unclamp hand after moving contact still keep with it is quiet
Contact, to complete hand-reset.So, the application range of this temperature limiter will be restricted, when limit temperature is dynamic
Make temperature itself it is less high when, environment temperature will drop to room temperature or less just can be with hand-reset, if room temperature cannot hand when higher
It is dynamic to reset.For example, limiting warm operating temperature is 90 DEG C, this temperature limiter needs environment temperature to reduce by 60 DEG C can just answer manually
Position, i.e. environment temperature are not higher than 30 DEG C of Shi Caike with hand-reset, and when summer environment temperature is higher than 30 DEG C then always cannot
Hand-reset.Therefore this liquid expansion temp limiter may not apply to limit lower (such as 60 DEG C~120 DEG C temperature of warm operating temperature
Degree) occasion.
Summary of the invention
The purpose of the present invention is to provide a kind of hand reset liquid expansion temp limiters, it can make temperature-sensitive temperature than limit temperature
Operating temperature reduce it is not many, i.e., under higher environment temperature can hand-reset, it is 60 DEG C that it, which is suitable for limiting warm operating temperature,
In~120 DEG C of home electrical heater.
Technical solution proposed by the invention is such that
A kind of hand reset liquid expansion temp limiter, including public terminal 1, insulation shell 2, movable contact spring 3, bow spring 4, quiet
Contact 5, release link 7, adjusts screw 8, bellows 9, push rod 10, capillary 11 and temperature sensing package 12 at moving contact 6, and movable contact spring 3 is by outline border
301 and 302 two parts of inner sheet composition, the original state of inner sheet 302, which has, certain is bent upwards inclination angle, inner sheet 302 and outline border
301 have the opposite left edge of a knife 3021 and the right edge of a knife 3011, and bow spring 4 is mounted on two opposite left edges of a knife 3021 and the right edge of a knife 3011
And it is in compressive state, the left tongue piece 3022 of protrusion is equipped in the middle part of 302 outer end of inner sheet, 301 inner end of outline border middle part is equipped with protrusion
Right tongue piece 3012 simultaneously respectively penetrates in the bow corresponding square hole of spring 4, and the hook portion 402 of bow 4 lower part of spring is connect with 301 clasp joint of outline border,
The bellows 9, capillary 11, temperature sensing package 12 constitute capsule stack, are filled with liquid working substance appropriate in the capsule stack, are additionally provided with
Stationary contact bridge 14 and static terminal 13, the stationary contact bridge 14 are made of elastic spring, are in height two-stage sheet, the high piece of stationary contact bridge 14
1401 with 5 bottom of static contact be riveted on 5 bottom of static contact, corresponding 2 bottom of shell is provided with a vertical emptying aperture 201, quiet
Low 1402 of touching bridge 14 is fixedly connected on insulation shell 2 by fastening screw 15, fastening nut 16 and static terminal 13, stationary contact
First 5 are in elastic suspension free state.
Outer back gauge B between the high piece 1401 of the stationary contact bridge 14 and low 1402 is 0.5~2mm.The stationary contact bridge
14 are made of beryllium-bronze material.The insulation shell 2 is made of ceramic material.
Compared with prior art, the present invention has following remarkable result:
The present invention has additional in the flexible stationary contact bridge of height two-stage sheet, and static contact bottom is riveted on the height of stationary contact bridge
Low of on piece, stationary contact bridge is fixed by insulation shell and static terminal, but also in housing bottom corresponding with static contact bottom
It is provided with a vertical emptying aperture, static contact is made to be in elastic suspension free state.When static contact is by external force, stationary contact bridge
High piece can be bent downwardly deformation until touching housing bottom, make to bend spring overturning, dynamic and static contact disconnects, after external force is removed,
Then dynamic and static contact is kept in contact, and realizes hand-reset, this can make this temperature limiter in temperature-sensitive temperature than limiting warm operating temperature drop
It is low not many, i.e., hand-reset can be realized at higher ambient temperatures, and it is 60 DEG C~120 that it, which is suitable for limiting warm operating temperature,
DEG C electric household appliance in.
Detailed description of the invention
Fig. 1 is a kind of general structure schematic diagram of hand reset liquid expansion temp limiter of one embodiment of the invention.
Fig. 2 is the A-A transverse direction schematic cross-sectional view of Fig. 1.
Fig. 3 is each part status schematic diagram in hand-reset of temperature limiter shown in Fig. 1.
Fig. 4 is the top view of structure between movable contact spring shown in Fig. 3 and bow spring.
Figure label indicates: 1, public terminal, 2, insulation shell, 201, emptying aperture, 3, movable contact spring, 301, outline border, 3011, the right side
The edge of a knife, 3021, the left edge of a knife, 4, bow spring, 402, hook portion, 5, static contact, 6, moving contact, 7, release link, 8, adjusting screw, 9,
Bellows, 10, push rod, 11, capillary, 12, temperature sensing package, 13, static terminal, 14, stationary contact bridge, 1401, high piece, 1402, low, 15,
Fastening screw, 16, fastening nut.
Specific embodiment
The present invention is further elaborated by following example.
Referring to FIG. 1 to FIG. 4, a kind of hand reset liquid expansion temp limiter, by public terminal 1, insulation shell 2,
Movable contact spring 3, static contact 5, moving contact 6, release link 7, adjusts screw 8, bellows 9, push rod 10, capillary 11, temperature sensing package at bow spring 4
12, static terminal 13, stationary contact bridge 14 form.The movable contact spring 3 is made of outline border 301 and 302 two parts of inner sheet, and inner sheet 302 manufactures
It is bent upwards inclination angle with certain at original state, inner sheet 302 and outline border 301 are respectively equipped with the opposite left edge of a knife 3021 and the right side
The edge of a knife 3011, bow spring 4 are mounted on two opposite left edges of a knife 3021 and the right edge of a knife 3011 and are in compressive state, movable contact spring 3
The right tongue piece 3012 and difference of protrusion are equipped in the middle part of left tongue piece 3022,301 inner end of outline border equipped with protrusion in the middle part of 302 outer end of inner sheet
It penetrates in the square hole of bow 4 corresponding position of spring, guarantees that bow spring 4 will not fall off.Bow 4 lower part of spring is equipped with one fixed width and is enough to hook dynamic touching
The hook portion 402 of the hook portion 402 of piece outline border 301, i.e. bow 4 lower part of spring is connect with 301 clasp joint of outline border, in bow spring 4 because of movable contact spring inner sheet
302 can drive 3 outline border 301 of movable contact spring to move upwards and be detached from moving contact 6 and static contact 5 when moving upwards and increasing.It is described
Bellows 9, capillary 11, temperature sensing package 12 constitute capsule stack, and being filled with liquid working substance appropriate in the capsule stack makes push rod 10 exist
There is certain initial displacement, displacement caused by push rod 10 makes to bend spring when reaching set limit temperature operating temperature under room temperature
4 overturnings, dynamic and static contact 6,5 disconnect.Bellows does not generate displacement after being leaked due to working medium, and push rod 10 is in free state,
Move upwards 3 inner sheet 302 of movable contact spring, driving outline border 301 to move upwards by bow spring hook portion 402 keeps dynamic and static contact 6,5 disconnected
It opens.Thus, this temperature limiter has the function of liquid working substance leak protection.The stationary contact bridge 14 is made of elastic spring, in height
Two-stage sheet, the high piece 1401 of stationary contact bridge 14 and 5 bottom of static contact rivet, at 2 bottom of insulation shell corresponding with 5 bottom of static contact
Portion is provided with a vertical emptying aperture 201, and low 1402 of stationary contact bridge 14 passes through fastening screw 15, fastening nut 16 and static terminal 13
It is fixedly connected on insulation shell 2, static contact 5 is in elastic suspension free state.When static contact 5 is by external force, institute
The high piece 1401 for stating stationary contact bridge 14, which can be bent downwardly, to be deformed until touching 2 bottom of insulation shell, can after external force is removed
It restores to the original state.
The stationary contact bridge 14 is stamped to form using beryllium-bronze material, between the high piece 1401 of stationary contact bridge 14 and low 1402
Outer back gauge B=0.5~2mm.By its appropriately designed shape and size, can do the high piece 1401 dynamic and static contact 6,5 just
Shape is often basically unchanged when contact, only manpower is firmly pressed and could be deformed, and can be returned to original state again after external force is removed.It is described
Insulation shell 2 is made of ceramic material.
The course of work of this hand reset liquid expansion temp limiter is as follows: when temperature limiter is because of the temperature-sensitive temperature of temperature sensing package 12
When more than overtemperature prote action value, push rod 10, which moves downward, overturns bow spring 4 and cut-out switch.When 12 temperature sensor of temperature sensing package
Have dropped, push rod 10 bounced back it is some, but due to 3 inner sheet 302 of movable contact spring by bow 4 tension force effect of spring and produce small
Bending deformation, even if contacting by moving contact 6 with static contact 5, is bent in 4 left side fulcrum of spring, that is, movable contact spring when pressing release link 7
The left edge of a knife 3021 of piece is still below the right right edge of a knife 3011 of fulcrum i.e. movable contact spring outline border, therefore bends spring 4 and fail to overturn.Continue to increase at this time
Strength presses release link 7, and thrust is transmitted to static contact 5 by moving contact 6, the high piece 1401 of stationary contact bridge 14 is made to be bent downwardly deformation,
The right edge of a knife 3011 of 3 outline border 301 of movable contact spring decreases, and is higher than the bow i.e. left edge of a knife 3021 of movable contact spring inner sheet of 4 left side fulcrum of spring
The right edge of a knife 3011 of the right fulcrum, that is, movable contact spring outline border, bow spring 4 are overturn, and dynamic and static contact 6,5 contacts, and the pressing for removing release link 7 pushes away
After power, dynamic/static contact 6,5 is still kept in contact, and realizes hand-reset of the temperature-sensitive temperature lower than about 20 DEG C of operating temperature of limit temperature when.
After hand-reset, stationary contact bridge 14 is restored, and all set 12 temperature-sensitive temperature of temperature sensing package reaches same to temperature limiter next time again
Protected by temperature limitation movement when overtemperature prote action value.
In the present embodiment, limiting warm operating temperature is 90 DEG C, and the temperature sensor of temperature limiter temperature sensing package 12 only needs to be reduced to 70
DEG C when can realize hand-reset.
Claims (3)
1. a kind of hand reset liquid expansion temp limiter, including public terminal (1), insulation shell (2), movable contact spring (3), bow spring
(4), static contact (5), moving contact (6), release link (7), adjusting screw (8), bellows (9), push rod (10), capillary (11) and sense
Thermometer bulb (12), movable contact spring (3) are made of outline border (301) and inner sheet (302) two parts, and the original state of inner sheet (302) has one
Fixed is bent upwards inclination angle, and inner sheet (302) and outline border (301) have the opposite left edge of a knife (3021) and the right edge of a knife (3011), bends spring
(4) it is mounted on two opposite left edges of a knife (3021) and the right edge of a knife (3011) and in the middle part of compressive state, inner sheet (302) outer end
It is equipped with the right tongue piece (3012) of protrusion in the middle part of left tongue piece (3022), outline border (301) inner end equipped with protrusion and respectively penetrates bow spring
(4) in corresponding square hole, the hook portion (402) of bow spring (4) lower part is connect with outline border (301) clasp joint, the bellows (9), capillary
(11), temperature sensing package (12) composition capsule stack are managed, liquid working substance appropriate is filled in the capsule stack, has at normal temperature certain
Initial displacement, it is characterised in that: be additionally provided with stationary contact bridge (14) and static terminal (13), the stationary contact bridge (14) uses elastic spring
It is made, is in height two-stage sheet, the high piece (1401) of stationary contact bridge (14) and static contact (5) bottom are riveted on and static contact (5) bottom
Portion corresponding shell (2) bottom is provided with a vertical emptying aperture (201), and low (1402) of stationary contact bridge (14) pass through fastening screw
(15), fastening nut (16) and static terminal (13) are fixedly connected on insulation shell (2), and static contact (5) is in elastic suspension certainly
By state.
2. hand reset liquid expansion temp limiter according to claim 1, it is characterised in that: the stationary contact bridge (14)
Outer back gauge B between high piece (1401) and low (1402) is 0.5~2mm.
3. hand reset liquid expansion temp limiter according to claim 1, it is characterised in that: the stationary contact bridge (14) is
It is made of beryllium-bronze material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049726.4A CN107610976B (en) | 2017-10-31 | 2017-10-31 | A kind of hand reset liquid expansion temp limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049726.4A CN107610976B (en) | 2017-10-31 | 2017-10-31 | A kind of hand reset liquid expansion temp limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107610976A CN107610976A (en) | 2018-01-19 |
| CN107610976B true CN107610976B (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711049726.4A Active CN107610976B (en) | 2017-10-31 | 2017-10-31 | A kind of hand reset liquid expansion temp limiter |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321016B (en) * | 2018-02-07 | 2024-05-24 | 广东汇莱德温控器有限公司 | Gear switch coupler with manual reset structure |
| CN110491726B (en) * | 2019-09-12 | 2024-08-02 | 佛山通宝华盛电热控制器有限公司 | Liquid expansion type temperature controller |
| CN113035641B (en) * | 2021-04-14 | 2024-12-24 | 佛山通宝华盛电热控制器有限公司 | A large current pressure type manual reset temperature limiter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211353A (en) * | 1987-10-19 | 1989-06-28 | Thermostat & Schaltgeraetebau | Thermal switches |
| CN2582147Y (en) * | 2002-11-04 | 2003-10-22 | 佛山通宝股份有限公司 | Hand reset liquid expansion temp limiter with leakage protection structure |
| CN2857201Y (en) * | 2005-11-29 | 2007-01-10 | 王文杰 | Temp limiter |
| CN201069533Y (en) * | 2007-07-30 | 2008-06-04 | 陈永龙 | Temperate limit device |
| CN207441574U (en) * | 2017-10-31 | 2018-06-01 | 佛山通宝华盛电热控制器有限公司 | A kind of hand reset liquid expansion temp limiter |
-
2017
- 2017-10-31 CN CN201711049726.4A patent/CN107610976B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211353A (en) * | 1987-10-19 | 1989-06-28 | Thermostat & Schaltgeraetebau | Thermal switches |
| CN2582147Y (en) * | 2002-11-04 | 2003-10-22 | 佛山通宝股份有限公司 | Hand reset liquid expansion temp limiter with leakage protection structure |
| CN2857201Y (en) * | 2005-11-29 | 2007-01-10 | 王文杰 | Temp limiter |
| CN201069533Y (en) * | 2007-07-30 | 2008-06-04 | 陈永龙 | Temperate limit device |
| CN207441574U (en) * | 2017-10-31 | 2018-06-01 | 佛山通宝华盛电热控制器有限公司 | A kind of hand reset liquid expansion temp limiter |
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| Publication number | Publication date |
|---|---|
| CN107610976A (en) | 2018-01-19 |
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