CN86106649A - Manual restore, single and rapid reaction, durable bimetallic element - Google Patents
Manual restore, single and rapid reaction, durable bimetallic element Download PDFInfo
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- CN86106649A CN86106649A CN 86106649 CN86106649A CN86106649A CN 86106649 A CN86106649 A CN 86106649A CN 86106649 CN86106649 CN 86106649 CN 86106649 A CN86106649 A CN 86106649A CN 86106649 A CN86106649 A CN 86106649A
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Abstract
But the present invention relates to a kind of one-way bi-metallic element liquid of hand-reset.The active layers that bimetal plate expansion coefficient is big during moulding is in convex surface, and (during operating state) rotating plate is in concave surface after the hand-reset, and bimetallic element can be made disc-shaped, oval dish or polygon; Can be used as the reset action element of temperature limiter and have hand in reset temperature control and hand reset the warm difunctional combination switch of the limit warm action element of limit that resets simultaneously of hand in the electric heating appliance; the protected by temperature limitation scope is 50～250 ℃, precision is better than ± 15 ℃ (high temperature range) and ± 5 ℃ (low temperature range).
Description
But the present invention relates to a kind of one-way bi-metallic element liquid of hand-reset, it can be used as hand in the electric heating appliance reset temperature limiter (or release) action element and have hand in reset temperature control and hand reset the difunctional compound electric switch of the limit temperature warm action element of limit that resets simultaneously.
According to the requirement of State Standard of the People's Republic of China GB4706.1-84 " safety general of family expenses and similar applications electrical equipment requires " (1985-03-01 enforcement), the electric heating appliance of a high safety standard must be installed the temperature limiter that hand resets.As the critical piece-quick-action bimetallic element of temperature limiter, its conventional practice is that bimetal leaf is made garden dish analogous shapes such as (or) ellipse garden dish, and the active layers that the coefficient of expansion is big is in the concave surface of garden dish.When temperature rise reached set-point, the bimetallic power of picking made roudnel upset (this moment, active layers was in convex surface) just greater than the elastic restraint power of component periphery, and output action is cut off the electricity supply; After temperature descended, the reverse power that picks made roudnel overturn once more (this moment, active layers was returned to concave surface) again, and output action connection electrical contact, had so just reached the purpose of round trip action and temperature control.On operation principle, roudnel (active layers is at concave surface) after shaping and the heat treatment is in structural stable state, can become metastable state owing to the increase of the power of picking when temperature rises gradually, (this moment, active layers was at convex surface) reaches stable state again after intensification makes the bimetal leaf upset; But during cooling, this state also can be owing to the increase that oppositely picks power fades to metastable state, only make the bimetal leaf back (active layers is at concave surface) of overturning once more at temperature-fall period, that is be returned to be shaped and heat treatment after state the time, element just is returned to stable state.As seen, round trip quick-action temp-controlling element is a bistable element of working owing to variations in temperature.Utilize this principle, increase break-off signal and connect the poor of temperature, the connection temperature is in below the room temperature, also can make the one way of more than room temperature, having only a stable state and limit warm element, therefore also shouldn't thermal tripping mechanism and carry out non-automatic-reset the action of limit temperature and can use repeatedly after hand resets.This limit temperature element exists a shortcoming to be exactly: be not in the stable state of concave surface and keep off-position though turn to active layers when high temperature has been carried out action of limit temperature and cool to room temperature, but element structurally still is in metastable state and has certain trend that resets certainly, so antijamming capability (for example antidetonation and anti-drop) is not high enough, security performance is good inadequately, and useful life can not very long (for example being difficult to reuse more than 100 times), lose non-automatic-reset limit temperature function from resetting when causing cooling easily.
The objective of the invention is design and produce a kind of security performance height, the small capacity double hardware of long service life, it both can be used for temperature limiter separately, also can be used for miniature combination switch (have simultaneously from reset temperature control and hand reset the limit warm nature can switch) in.
The present invention has adopted when the bimetallic element moulding and distinct way traditionally, allow the big active layers of bimetal plate expansion coefficient be in the convex surface of roudnel (or oval dish, polygon dish), the passive layer that the coefficient of expansion is little but is in concave surface, like this, equilbrium position during room temperature (forming temperature) is that active layers is at convex surface, hand reset operation during use makes sheet shape upset (being in the metastable state position), and active layers is in concave surface; When temperature rise reaches T
fWhen making the power of picking of active layers be enough to overcome the elastic restraint power of sheet shape periphery, bimetallic element overturns suddenly, produces one and moves fast and cut off the electricity supply.Because the active layers of the bimetallic element after the upset is in convex surface, this state is its balance and stability state when room temperature just, so, even temperature is cooled to room temperature (or even below room temperature), it can not overturn once more yet, and this realizes the performance of one way limit temperature with regard to dissengaged positions that can maintained switch.Finished the bimetallic element once limit behind the warm action power dump after being in concave surface once more through hand-reset to active layers, it is in again treats operating state, therefore can use repeatedly.
Bimetallic element involved in the present invention also has following advantage:
1. because the power of picking in high temperature when upset will make bimetallic element push the equilibrium state shape of its room temperature to, so one way bimetallic element involved in the present invention has high security performance and can be at high temperature failure.Even break down also can only be that room temperature can not hand-reset (just can in time change bimetallic element this moment).
2. the power that picks when high temperature overturns is very big, so the quick-action performance of element is good.
3. element can be done very for a short time, about 6 millimeters of minimum dimension.
4. circuit elements design manufacture method and technological process are simple, the factory of production traditional double metal quick-action element is not increasing any new equipment and is not changing basically under the parts situation of original temperature control switch that resets certainly, as long as the bimetal leaf reverse molding can be made the limit temperature electric switch of manual restore, single and rapid reaction, durable.The present invention has needn't be increased equipment investment and can retrofit rapidly and produce the advantage of miniature temperature limiter, has high economic benefit.
Specific design of the present invention is as follows:
First kind of design is that bimetal leaf is made garden dish shape.Figure one (a) provided moulding one way bimetallic garden dish vertical view.(b) be side view.D is a bimetallic thickness among the figure, and D is a garden dish diameter, and hb is the dish height, and (1) is active layers, and moulding is in convex surface, and (2) are passive layer.For one way upset temperature T
fIdentical design requires D
2/ d is identical.Therefore, for the element microminiaturization, can select the less bimetal leaf of d and D is reduced.Usually selecting d is 0.1～0.2 millimeter, and hb is 0.35 millimeter～0.75 a millimeter scope.Be advisable for 8 millimeters≤D≤18 millimeters.For the convenience of installing and using, also can increase hole, a garden in the centre of garden dish.When adopting bigger D value, still can utilize method of the present invention to make the one way quick-action element, but the volume of switch is too big.Figure one (C) is the garden dish (active layers is in concave surface) of the operating state of hand after resetting.Its upset temperature range is 80～250 ℃ of scopes.
Second kind of design is that bimetal leaf is made ellipse garden shape.Figure two (a) provided moulding the ellipse garden of bimetallic dish vertical view, (b) be side view.D is the thickness of bimetal leaf among the figure, and Lb is an ellipse garden dish major axis, and La is an ellipse garden dish minor axis, and hb is the height of long axis direction, and ha is the height of short-axis direction.(21) be active layers, be in convex surface during moulding, (22) are passive layer.Figure two (C) has provided the reset ellipse garden dish of back operating state of hand, and its active layers is in concave surface.Common desirable d is 0.1 millimeter～0.2 millimeter, and La is 6～12 millimeters, and Lb is 8～15 millimeters.Hb is 0.35～0.8 millimeter, and its upset temperature is in 50～150 ℃ of scopes.Increase the ellipse garden degree (being that the Lb/La value increases) of ellipse garden dish, the one way quick-action life-span is increased, but quick-action reduces.For the convenience of installing, also can open hole, a garden in the center of figure two (b) or open one and half garden shape goods at a place on end limit.The third design is that bimetal leaf is made polygon.Figure three (a) provided moulding vertical view, (b) of metal polygon element be side view.Wherein d is a bimetal leaf thickness, and hb is the length direction height, and ha is the Width height.(31) be that passive layer, Db are length for active layers, (32), Da is a width, for the convenience of installing, also can open an aperture in figure three (b) center or open individual half garden goods at the end place.Figure three (C) is the polygon element of the operating state of hand after resetting, and can choose hb usually is 0.35 millimeter～0.8 millimeter, and Db is 8～15 millimeters, and Da is 6～12 millimeters.For the element microminiaturization, still getting d is 0.1～0.2 millimeter.
In above three kinds of designs, with the upset thrust maximum of garden dish, polygonal limit shape element takes second place, ellipse garden dish minimum (but also having satisfied instructions for use); The upset life-span is then best with ellipse garden dish, and garden dish and polygon element take second place, but all can reach the life-span more than 5000 times.
Some master operations are illustrated as down respectively:
1. punching moulding
Can be in room temperature punching and moulding.Mould and die accuracy should be ± and 0.02 millimeter, periphery and central small hole place can not exist burr or crimping.
2. heat treating regime:
250 ℃ are incubated 1 hour and cool off with stove.
Be that example is described further with six samples below:
Sample one:
Material therefor: 5J18 type bimetal leaf
Shape: garden dish
Parameter: D=12 millimeter, h=0.34 millimeter
The d=0.1 millimeter.
The result: 1. the upset temperature is 105 ℃ ± 15 ℃;
Life-span:＞1000 times.
2. upset temperature: 105 ℃ ± 5 ℃;
Life-span:＞100 times.
Sample two:
Material therefor: 5J18 type bimetal leaf
Shape: garden dish
Parameter: D=9 millimeter; The h=0.5 millimeter;
The d=0.1 millimeter.
Result: upset temperature: 140 ℃ ± 15 ℃
Life-span:＞1000 times
Sample three:
Material therefor: 5J18 type bimetal leaf
Shape: polygon
Parameter: Lb=8.5 millimeter; The La=5.5 millimeter;
The hb=0.5 millimeter; The d=0.1 millimeter.
Result: the 1. temperature of overturning: 55 ℃ ± 5 ℃
Life-span:＞1000 times
2. upset temperature: 60 ℃ ± 10 ℃
Life-span＞5000 time
Sample four:
Material therefor: 5J18 type bimetal leaf
Shape: polygon
Parameter: the Lb=8.5 millimeter, the La=5.5 millimeter,
The hb=0.55 millimeter, the d=0.1 millimeter.
Result: upset temperature: 70 ℃ ± 10 ℃
Life-span＞1000 time
Sample five:
Material therefor: 5J18 type bimetal leaf
Shape: ellipse garden dish
Parameter: Db=9.8 millimeter; The Da=6.8 millimeter;
The hb=0.52 millimeter; The d=0.1 millimeter.
Result: the 1. temperature of overturning: 70 ℃ ± 5 ℃
Life-span＞5000 time
Sample six:
Material therefor: 5J18 type bimetal leaf
Shape: ellipse garden dish
Parameter: Db=9.8 millimeter; The Da=6.8 millimeter;
The hb=0.75 millimeter; The d=0.1 millimeter.
Result: the 1. temperature of overturning: 125 ℃ ± 15 ℃
Life-span＞5000 time
2. upset temperature: 120 ℃ ± 10 ℃
Life-span＞2000 time
More than six samples cut-out operate time all≤1 millisecond.
Claims (4)
1, a kind of hand one-way bi-metallic element liquid that resets, the active layers that the coefficient of expansion of bimetal leaf is big when it is characterized in that moulding is in convex surface, (operating state) rotating plate just is in concave surface after the hand-reset, and bimetallic element can make garden dish, ellipse garden dish or polygon, and element is in temperature T
fAfter the place upset, even reduce to the room temperature temperature of room temperature (or be lower than), also can not overturn once more, can use repeatedly after hand-reset, the protected by temperature limitation temperature range is 50 ℃～250 ℃; Cut off operate time all≤1 millisecond.
2, a kind of hand as claimed in claim 1 one-way bi-metallic element liquid that resets; it is characterized in that bimetallic garden dish diameter D is 8 millimeters～18 millimeters; the bimetal leaf thickness d is 0.1 millimeter～0.2 millimeter; garden dish height is 0.35 millimeter～0.75 millimeter; the protected by temperature limitation scope is 80 ℃～250 ℃; precision be ± 10 ℃ (low temperature range) and ± 15 ℃ (high temperature range), useful life is greater than 1000 times.
3, a kind of hand as claimed in claim 1 one-way bi-metallic element liquid that resets is characterized in that the ellipse garden of bimetallic dish longitudinal axis L b is 8 millimeters～15 millimeters; Minor axis La is 6 millimeters～12 millimeters; ellipse garden dish height hb is 0.35 millimeter～0.8 millimeter, and the bimetal leaf thickness d is 0.1～0.2 millimeter, and the protected by temperature limitation temperature range is 50 ℃～150 ℃; precision be ± 5 ℃ (low temperature range) and ± 10 ℃ (high temperature range), useful life is greater than 1000 times.
4, a kind of hand as claimed in claim 1 one-way bi-metallic element liquid that resets, it is characterized in that bimetallic polygon dish length Db is 8 millimeters～15 millimeters, width D a is 6 millimeters～12 millimeters, height hb is 0.35 millimeter～0.8 millimeter, sheet thickness is 0.1 millimeter～0.2 millimeter, limitting warm temperature range is 60 ℃～130 ℃, precision: ± 5 ℃ (low temperature range), ± 10 ℃ (high temperature range); Useful life is greater than 1000 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106649 CN86106649A (en) | 1986-10-09 | 1986-10-09 | Manual restore, single and rapid reaction, durable bimetallic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106649 CN86106649A (en) | 1986-10-09 | 1986-10-09 | Manual restore, single and rapid reaction, durable bimetallic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86106649A true CN86106649A (en) | 1988-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106649 Pending CN86106649A (en) | 1986-10-09 | 1986-10-09 | Manual restore, single and rapid reaction, durable bimetallic element |
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| CN (1) | CN86106649A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036035C (en) * | 1992-10-16 | 1997-10-01 | 株式会社日立制作所 | Overload protective apparatus utilizing a bimetal |
| CN102543575A (en) * | 2012-01-20 | 2012-07-04 | 龙口中宇机械有限公司 | Two-speed temperature control power supply switch |
| CN102543576A (en) * | 2012-01-20 | 2012-07-04 | 龙口中宇机械有限公司 | Three-speed temperature controlled power switch |
| CN103367035A (en) * | 2013-05-24 | 2013-10-23 | 亮群电子（常熟）有限公司 | Open temperature controller and production process thereof |
| CN106194940A (en) * | 2016-08-31 | 2016-12-07 | 黄丽贤 | A kind of bimetal leaf tables and chairs Telescopic rod locking structure |
| CN106486321A (en) * | 2016-12-30 | 2017-03-08 | 合肥舒实工贸有限公司 | Kick type temperature controller bimetal leaf |
-
1986
- 1986-10-09 CN CN 86106649 patent/CN86106649A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036035C (en) * | 1992-10-16 | 1997-10-01 | 株式会社日立制作所 | Overload protective apparatus utilizing a bimetal |
| CN102543575A (en) * | 2012-01-20 | 2012-07-04 | 龙口中宇机械有限公司 | Two-speed temperature control power supply switch |
| CN102543576A (en) * | 2012-01-20 | 2012-07-04 | 龙口中宇机械有限公司 | Three-speed temperature controlled power switch |
| CN102543576B (en) * | 2012-01-20 | 2015-07-01 | 龙口中宇机械有限公司 | Three-speed temperature controlled power switch |
| CN102543575B (en) * | 2012-01-20 | 2015-07-01 | 龙口中宇机械有限公司 | Two-speed temperature control power supply switch |
| CN103367035A (en) * | 2013-05-24 | 2013-10-23 | 亮群电子（常熟）有限公司 | Open temperature controller and production process thereof |
| CN106194940A (en) * | 2016-08-31 | 2016-12-07 | 黄丽贤 | A kind of bimetal leaf tables and chairs Telescopic rod locking structure |
| CN106486321A (en) * | 2016-12-30 | 2017-03-08 | 合肥舒实工贸有限公司 | Kick type temperature controller bimetal leaf |
| CN106486321B (en) * | 2016-12-30 | 2019-03-05 | 合肥舒实工贸有限公司 | Kick type temperature controller bimetal leaf |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |