CN103489719B - A kind of thermorelay - Google Patents
A kind of thermorelay Download PDFInfo
- Publication number
- CN103489719B CN103489719B CN201310412734.6A CN201310412734A CN103489719B CN 103489719 B CN103489719 B CN 103489719B CN 201310412734 A CN201310412734 A CN 201310412734A CN 103489719 B CN103489719 B CN 103489719B
- Authority
- CN
- China
- Prior art keywords
- bimetal leaf
- guide plate
- stationary contact
- sheet metal
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910006295 Si—Mo Inorganic materials 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
The open a kind of thermorelay of the present invention, including at least bimetal leaf and a support, this bimetal leaf one end is fixed on fixing post, the bearing of trend of the bimetal leaf other end is provided with guide plate, guide plate the most directly contacts with bimetal leaf, being provided with chute on support, described guide plate is arranged in chute；Guide plate side is provided with projection, and projection is connected with one end of spring, and the other end of spring is fixed on support；The telescopic direction of spring is parallel with the length direction of guide plate；The opposite side of guide plate is provided with compensation sheet metal, and compensation sheet metal is adjacent with the on-fixed end of bimetal leaf but does not contacts, and guide plate is respectively arranged at two ends with and often closes stationary contact and often divide stationary contact, is often provided with SR on point stationary contact.Present configuration is the simplest, eliminates linkage, because of without being affected by connecting rod fault.
Description
Technical field
The present invention relates to a kind of relay, be specifically related to a kind of thermorelay.
Background technology
Relay, also referred to as relaying, is a kind of electronic control device, it have control system also known as input circuit and by control system also known as output loop, being commonly used in automatic control circuit, it actually goes to control the one " switch automatically " of larger current with less electric current.Therefore play in circuit be automatically adjusted, safeguard protection, the effect such as change-over circuit.
Existing thermorelay is that the electric current utilizing and flowing into heater element produces heat; the bimetal leaf making the different coefficient of expansion deforms upon; when deformation reaches certain distance; just promote connecting rod action; control circuit is made to disconnect; so that catalyst dead electricity, main circuit disconnects, it is achieved the overload protection of motor.
In prior art, overwhelming majority thermorelay is all to realize disconnecting control circuit by connecting rod action, so that catalyst dead electricity, main circuit disconnects.When connecting rod breaks down, thermorelay cannot normally work.
Summary of the invention
In consideration of it, present invention aim at providing a kind of thermorelay, this thermorelay simple in construction, it is not susceptible to fault.
For solving above technical problem, the technical scheme that the present invention provides is, a kind of thermorelay is provided, including at least bimetal leaf and a support, this bimetal leaf one end is fixed on fixing post, is provided with guide plate on the bearing of trend of the bimetal leaf other end, and guide plate the most directly contacts with bimetal leaf, being provided with chute on support, described guide plate is arranged in chute；Guide plate side is provided with projection, and projection is connected with one end of spring, and the other end of spring is fixed on support；The telescopic direction of spring is parallel with the length direction of guide plate；The opposite side of guide plate is provided with compensation sheet metal, and compensation sheet metal is adjacent with the on-fixed end of bimetal leaf but does not contacts, and guide plate is respectively arranged at two ends with and often closes stationary contact and often divide stationary contact, is often provided with SR on point stationary contact.
Further, described compensation sheet metal is positioned at bimetal leaf bending direction side.
Preferably, the material of described compensation sheet metal is identical with bimetal leaf.
Preferably, described bimetal leaf is provided with heater element.
Preferably, described heater element is in parallel with bimetal leaf.
Compared with prior art, a technical scheme in technique scheme has the advantage that
1, present invention eliminates linkage, because of without being affected by connecting rod fault.
2, present configuration is the simplest.
3, the present invention is by being directly connected on bimetal leaf in main circuit or by bimetal leaf and heater element and be connected in main circuit, enhances the susceptiveness of action.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Detailed description of the invention
Illustrate with a specific embodiment below in conjunction with the accompanying drawings.
See Fig. 1.A kind of thermorelay described by the present embodiment, including at least bimetal leaf 3 and a support, a kind of composite that bimetal leaf is made up of two or more metals with suitable performance or other material, belongs to current material.Bimetal leaf is also referred to as thrermostatic bimetal-plate, owing to the thermal coefficient of expansion of each constituent element layer is different, when the temperature is changed, the deformation of active layers is greater than the deformation of passive layer, thus the entirety of bimetal leaf will be to passive layer curving, the curvature of the most this composite changes thus produces deformation.Wherein, what the coefficient of expansion was higher is referred to as active layers；The coefficient of expansion is referred to as passive layer compared with the end.
One end of bimetal leaf 3 is fixed on fixing post 4, and the bearing of trend of bimetal leaf 3 other end is provided with guide plate 1, and in the chute of the rack-mount setting of guide plate 1, guide plate 1 coordinates with slide.Guide plate 1 the most directly contacts with bimetal leaf 3.Hereinafter installing orientation shown in the drawings to be described, guide plate 1 is provided above projection 6, and projection 6 is connected with one end of spring 5, and the other end of spring 5 is fixed on support；The telescopic direction of spring 5 is parallel with the length direction of guide plate 1.The lower section of guide plate 1 is provided with compensation sheet metal 9, and compensation sheet metal 9 is adjacent with the on-fixed end of bimetal leaf 3 but does not contacts.Compensating sheet metal 9 and be positioned at bimetal leaf 3 bending direction side, its material is identical with bimetal leaf.Guide plate 1 is respectively arranged at two ends with and often closes stationary contact 2 and often divide stationary contact 8, is often provided with SR 7 on point stationary contact 8.
For improving the susceptiveness of thermorelay of the present invention further, bimetal leaf 3 is provided with heater element.Conventional heater element such as Si-Mo rod, siliconit, molybdenum filament, molybdenum plug, molybdenum electrode, ceramic heating plate, silicon-carbon element and silicon molybdenum element.In this heater element access in parallel with bimetal leaf 3 main circuit.When thermorelay does not accesses circuit, compensating and be preset with a certain distance between sheet metal 9 and bimetal leaf 3, under the effect of spring 5, guide plate 1 is placed in and often closes on stationary contact 2.Thermorelay accesses in circuit and starts working, and bimetal leaf 3 is increased by thermal deformation, when main circuit transships, the temperature of bimetal leaf 3 continues to rise, and bimetal leaf 3 occurs more large deformation, and bimetal leaf 3 top promotes and compensates sheet metal 9, make guide plate 1 often leave and close stationary contact 2, be placed in and often divide on stationary contact 8.After bimetal leaf 3 cools down, pressing SR 7, guide plate 1 is replaced in and often closes on stationary contact 2, it is achieved reset.
Below being only the preferred embodiment of the present invention, it is noted that above-mentioned preferred implementation is not construed as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (3)
1. a thermorelay, including at least bimetal leaf (3) and a support, this bimetal leaf (3) one end is fixed on fixing post (4), the bearing of trend of bimetal leaf (3) other end is provided with guide plate (1), guide plate (1) the most directly contacts with bimetal leaf (3), it is characterized in that, support is provided with chute, and described guide plate (1) is arranged in chute；Guide plate (1) side is provided with projection (6), and projection (6) is connected with one end of spring (5), and the other end of spring (5) is fixed on support；The telescopic direction of spring (5) is parallel with the length direction of guide plate (1)；The opposite side of guide plate (1) is provided with compensation sheet metal (9), compensation sheet metal (9) is adjacent with the on-fixed end of bimetal leaf (3) but does not contacts, guide plate (1) is respectively arranged at two ends with and often closes stationary contact (2) and often divide stationary contact (8), often divides and is provided with SR (7) on stationary contact (8)；Being provided with heater element on described bimetal leaf (3), described heater element is in parallel with bimetal leaf (3).
Thermorelay the most according to claim 1, it is characterised in that described compensation sheet metal (9) is positioned at bimetal leaf (3) bending direction side.
Thermorelay the most according to claim 1, it is characterised in that the material of described compensation sheet metal (9) is identical with bimetal leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412734.6A CN103489719B (en) | 2013-09-11 | 2013-09-11 | A kind of thermorelay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412734.6A CN103489719B (en) | 2013-09-11 | 2013-09-11 | A kind of thermorelay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103489719A CN103489719A (en) | 2014-01-01 |
| CN103489719B true CN103489719B (en) | 2016-09-21 |
Family
ID=49829867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310412734.6A Active CN103489719B (en) | 2013-09-11 | 2013-09-11 | A kind of thermorelay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103489719B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1711106U (en) * | 1955-09-01 | 1955-11-17 | Voigt & Haeffner Ag | BIMETAL RELEASE WITH RELEASE TRAVERSE FOR ELECTRIC SWITCHES. |
| US3544941A (en) * | 1967-11-27 | 1970-12-01 | Starkstrom Schaltgeratefabrik | Thermal relay |
| DE2139808A1 (en) * | 1971-07-19 | 1973-02-22 | Chejfiz | THERMAL RELAY |
| CN2279694Y (en) * | 1996-10-17 | 1998-04-22 | 陈英钟 | Double-metal plate thermal relay |
| CN2346102Y (en) * | 1998-07-14 | 1999-10-27 | 陆昌钦 | Multifunction electric relay |
| CN203503565U (en) * | 2013-09-11 | 2014-03-26 | 国家电网公司 | Electrothermal relay |
-
2013
- 2013-09-11 CN CN201310412734.6A patent/CN103489719B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1711106U (en) * | 1955-09-01 | 1955-11-17 | Voigt & Haeffner Ag | BIMETAL RELEASE WITH RELEASE TRAVERSE FOR ELECTRIC SWITCHES. |
| US3544941A (en) * | 1967-11-27 | 1970-12-01 | Starkstrom Schaltgeratefabrik | Thermal relay |
| DE2139808A1 (en) * | 1971-07-19 | 1973-02-22 | Chejfiz | THERMAL RELAY |
| CN2279694Y (en) * | 1996-10-17 | 1998-04-22 | 陈英钟 | Double-metal plate thermal relay |
| CN2346102Y (en) * | 1998-07-14 | 1999-10-27 | 陆昌钦 | Multifunction electric relay |
| CN203503565U (en) * | 2013-09-11 | 2014-03-26 | 国家电网公司 | Electrothermal relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103489719A (en) | 2014-01-01 |
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