CN2582147Y - Hand reset liquid expansion temp limiter with leakage protection structure - Google Patents
Hand reset liquid expansion temp limiter with leakage protection structure Download PDFInfo
- Publication number
- CN2582147Y CN2582147Y CN 02249192 CN02249192U CN2582147Y CN 2582147 Y CN2582147 Y CN 2582147Y CN 02249192 CN02249192 CN 02249192 CN 02249192 U CN02249192 U CN 02249192U CN 2582147 Y CN2582147 Y CN 2582147Y
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- CN
- China
- Prior art keywords
- push rod
- movable contact
- temperature limiter
- spring
- switch contact
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Abstract
The utility model relates to a hand repositioning liquid expansion type temperature limiter with a leakage protection structure, which belongs to the technical field of the temperature limiter. The utility model is formed by improving the existing hand repositioning liquid expansion type temperature limiter. The utility model has the improvement that an outer frame and an inner sheet of a moving wafer are provided with corresponding knife edges; the middle parts of the corresponding knife edges are provided with convex tongue sheets; the front part and the rear part of an arch spring are respectively provided with a square hole which is sheathed in the corresponding tongue sheets; both sides of the front-lower end part of the arch spring extend outwards to form hook parts and are hooked with an outer frame. When the structure causes a push rod driven by a diaphragm capsule to have no displacement or have small displacement, a switch contact is switched off; when the push rod has definite initial displacement under the normal temperature, the switch contact is switched on; when the temperature limiting value is reached, the displacement of the push rod is the maximum, then the moving wafer is turned, and the switch contact is switched off. Thus, when the work medium of a diaphragm capsule assembly leaks, the push rod can not displace following the increase of the temperature, and the switch contact always stays in a switching off position so as to satisfy the safety requirement of leakage prevention.
Description
Technical field
The utility model relates to the temperature limiter technical field, particularly a kind of hand-reset expansion of liquids formula temperature limiter with leak protection structure that is used for the electric heating appliance overtemperature prote.
Background technology
Temperature limiter is widely used on the home electrical heaters such as electric warm-air machine, electric heater, electric oven, electric heating fryer, its use of connecting with thermostat, just in case thermostat lost efficacy, it can in time be cut off the electricity supply, and prevents that temperature is too high.Wherein the course of work of expansion of liquids formula temperature limiter is: be enclosed in the liquid working substance expanded by heating in the bulb, be delivered to bellows through capillary and make bellows produce displacement, promote sensitive switch and disconnect.
Existing expansion of liquids formula temperature limiter, form by terminal 1, housing 2, movable contact spring 3, fixed contact 5, moving contact 6, release link 7, adjustment screw 8, bellows 9, push rod 10, capillary 11 and bulb 12, connect push rod 10 upper ends that are connected with bellows 9 middle parts and be provided with adjustment screw 8, its lower end contacts with the arc interior sheet activity of movable contact spring 3, release link 7 is located at dynamic and static contact 6,5 tops, referring to shown in Figure 1.When refrigerant leakage, bellows 9 does not have displacement, and movable contact spring 3 is not subjected to external force and promotes, and will be in normal open state always, can not cut off the power supply, and does not just have the overtemperature prote effect yet.Because the bellows of sealing working medium, capillary are understood breakage and are caused the trend of refrigerant leakage under factor effects such as extraneous burn into capillary alternating bending; just in case behind the refrigerant leakage electric heating appliance has just been lost the overtemperature prote effect, therefore there is above-mentioned potential safety hazard all the time in existing expansion of liquids formula temperature limiter.
Summary of the invention
The technical problems to be solved in the utility model is when hand-reset expansion of liquids formula temperature limiter just in case still can be to the effect of protected electric heating appliance performance overtemperature prote behind the refrigerant leakage.
The technical solution that the utility model proposed is such: a kind of hand-reset expansion of liquids formula temperature limiter with leak protection structure; comprise terminal 1; housing 2; movable contact spring 3; fixed contact 5; moving contact 6; release link 7; adjustment screw 8; bellows 9; push rod 10; capillary 11 and bulb 12; connect push rod 10 upper ends that are connected with bellows 9 middle parts and be provided with adjustment screw 8; its lower end contacts with the interior sheet of movable contact spring 3 is movable; release link 7 is located at moving; fixed contact 6; 5 tops; the housing 301 of described movable contact spring 3 is provided with the relative edge of a knife 303 with interior sheet 302; there is the tongue piece 304 of protrusion at these relative edge of a knife 303 middle parts; before the bow spring 4; the rear portion respectively is provided with a square hole 401 and is inserted in the corresponding tongue piece 304; these both sides, bow spring 4 preceding bottom are outward extended with hook portion 402, and with housing 301 clasp joints.Described movable contact spring 3 and bow spring 4 adopt beryllium-bronze to make.
Operation principle of the present utility model is sensitive switch not to be manufactured when having thrust three sections switches that disconnect, connect when certain thrust is arranged, disconnect again when increasing thrust again; cooperate the capsule stack that has certain initial displacement amount at normal temperatures, and realize the function of hand-reset expansion of liquids formula temperature limiter refrigerant leakage protection.
Compared with prior art, the utlity model has following beneficial effect:
(1) only on the construction of switch of existing hand-reset expansion of liquids formula temperature limiter, do simple the change, just realized beyond thought leak protection function, thereby compact overall structure; easy to manufacture; reliable in action, with low cost, eliminated the potential safety hazard of protected electric heating appliance basically.
(2) because capsule stack utilizes the expansion of liquids principle to be operated in barotropic state, stopped the influence of external atmosphere pressure, operating temperature is stable, realizes the overtemperature prote of higher temperatures easily.
Description of drawings
Fig. 1 is the structural representation of existing a kind of hand-reset expansion of liquids formula temperature limiter.
Fig. 2 is the structural representation of an embodiment of the utility model.
Fig. 3 is the front view of movable contact spring shown in Figure 1 and bow spring.
Fig. 4 is the vertical view of Fig. 2.
Fig. 5 is the left view of Fig. 2.
Fig. 6 is the action relationships schematic diagram between middle push rod embodiment illustrated in fig. 1, movable contact spring, dynamic/static contact and the release link.
Embodiment
By following embodiment the utility model is further elaborated.
Referring to Fig. 2-shown in Figure 6; a kind of hand-reset expansion of liquids formula temperature limiter with leak protection function is made up of terminal 1, housing 2, movable contact spring 3, fixed contact 5, moving contact 6, release link 7, adjustment screw 8, bellows 9, push rod 10, capillary 11 and bulb 12.Movable contact spring 3 is made up of the housing 301 and the interior sheet 302 that link to each other, and housing 301 has the relative edge of a knife 303 with interior sheet 302, and bow spring 4 is installed on the relative edge of a knife 303 and is in compressive state.There is the tongue piece 304 of protrusion at the movable contact spring edge of a knife 303 middle parts, penetrate the square hole 401 of bow spring 4 correspondence positions, guarantee that bow spring 4 can not come off; The hook portion 402 that extend oriented both sides, bow spring 4 bottoms, its width is enough to hook movable contact spring housing 301, can drive movable contact spring housing 301 and move upward and dynamic and static contact 6,5 is broken away from when bow spring 4 is mentioned.During initial condition, in movable contact spring under the effect of sheet 302 elastic force, bow spring hook portion 402 is mentioned movable contact spring housing 301, and contact separates (sees Fig. 3 a); Along with the expansion of bellows 9, push rod 10 is depressed the interior sheet 302 of movable contact spring and is made contact connection (seeing Fig. 3 b), continues to depress at this moment push rod 10 and will make the contact maintenance connection with 301 disengagings of movable contact spring housing of bow spring hook portion 402; Continue to depress push rod 10 and reach critical point (seeing Fig. 3 c), bend spring 4 compressions this moment and reach maximum, switch is in critical condition; Continue to depress push rod 10 a little, the switch disconnection (seeing Fig. 3 d) of will overturning; Push release link 7 after the cooling and switch is resetted get back to state between Fig. 3 b and Fig. 3 c.The manufacturing of capsule stack makes push rod 10 have certain initial displacement at normal temperatures and is in state between Fig. 3 b and Fig. 3 c; the displacement of push rod 10 disconnects the switch upset when reaching required high temperature; and bellows does not have displacement behind the refrigerant leakage; make push rod 10 be in the free state shown in Fig. 3 a; contact separates; like this, just realized the leak protection function.
Claims (2)
1; a kind of hand-reset expansion of liquids formula temperature limiter with leak protection structure; comprise terminal (1); housing (2); movable contact spring (3); fixed contact (5); moving contact (6); release link (7); adjustment screw (8); bellows (9); push rod (10); capillary (11) and bulb (12); connect push rod (10) upper end that is connected with bellows (9) middle part and be provided with adjustment screw (8); its lower end contacts with the interior sheet of movable contact spring (3) is movable; release link (7) is located at moving; fixed contact (6; 5) top; it is characterized in that: the housing (301) of described movable contact spring (3) is provided with the relative edge of a knife (303) with interior sheet (302); there is the tongue piece (304) of protrusion at this relative edge of a knife (303) middle part; bow spring (4) is preceding; the rear portion respectively is provided with a square hole (401) and is inserted in the corresponding tongue piece (304); these both sides, preceding bottom of bow spring (4) are outward extended with hook portion (402), and with housing (301) clasp joint.
2, the hand-reset expansion of liquids formula temperature limiter with leak protection structure according to claim 1 is characterized in that: described movable contact spring (3) and bow spring (4) adopt beryllium-bronze to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249192 CN2582147Y (en) | 2002-11-04 | 2002-11-04 | Hand reset liquid expansion temp limiter with leakage protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249192 CN2582147Y (en) | 2002-11-04 | 2002-11-04 | Hand reset liquid expansion temp limiter with leakage protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2582147Y true CN2582147Y (en) | 2003-10-22 |
Family
ID=33719668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02249192 Expired - Lifetime CN2582147Y (en) | 2002-11-04 | 2002-11-04 | Hand reset liquid expansion temp limiter with leakage protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2582147Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121564A (en) * | 2010-12-28 | 2011-07-13 | 平顶山市联立机电有限公司 | Constant-temperature and constant-pressure inflation method and device of diaphragm capsule for temperature controller |
| CN107610976A (en) * | 2017-10-31 | 2018-01-19 | 佛山通宝华盛电热控制器有限公司 | A kind of hand reset liquid expansion temp limiter |
| CN110277277A (en) * | 2019-07-17 | 2019-09-24 | 佛山通宝华盛电热控制器有限公司 | A kind of energy regulator |
-
2002
- 2002-11-04 CN CN 02249192 patent/CN2582147Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121564A (en) * | 2010-12-28 | 2011-07-13 | 平顶山市联立机电有限公司 | Constant-temperature and constant-pressure inflation method and device of diaphragm capsule for temperature controller |
| CN102121564B (en) * | 2010-12-28 | 2012-11-28 | 平顶山市联立机电有限公司 | Constant-temperature and constant-pressure inflation method and device of diaphragm capsule for temperature controller |
| CN107610976A (en) * | 2017-10-31 | 2018-01-19 | 佛山通宝华盛电热控制器有限公司 | A kind of hand reset liquid expansion temp limiter |
| CN107610976B (en) * | 2017-10-31 | 2019-10-25 | 佛山通宝华盛电热控制器有限公司 | A kind of hand reset liquid expansion temp limiter |
| CN110277277A (en) * | 2019-07-17 | 2019-09-24 | 佛山通宝华盛电热控制器有限公司 | A kind of energy regulator |
| CN110277277B (en) * | 2019-07-17 | 2024-06-07 | 佛山通宝华盛电热控制器有限公司 | Energy regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121104 Granted publication date: 20031022 |