CN112420448A - Temperature controller with thermal protection function - Google Patents
Temperature controller with thermal protection function Download PDFInfo
- Publication number
- CN112420448A CN112420448A CN202011385988.XA CN202011385988A CN112420448A CN 112420448 A CN112420448 A CN 112420448A CN 202011385988 A CN202011385988 A CN 202011385988A CN 112420448 A CN112420448 A CN 112420448A
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- CN
- China
- Prior art keywords
- thermal protection
- plate
- fixed contact
- bracket
- fixed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
Abstract
The invention discloses a temperature controller with a thermal protection function, which comprises a top plate, a first lug plate, a fixed contact plate, a second lug plate and an adjustable bimetallic strip, wherein the top plate is fixed on a fixed rod from top to bottom and is insulated and separated from the fixed rod; an adjusting assembly is arranged on the top plate, the first lug plate is connected with a spring plate assembly which can be communicated with the fixed contact plate, a porcelain push is connected between the adjustable bimetallic strip and the spring plate assembly, and the adjusting assembly is provided with a jacking pin which can push the spring plate assembly; and a thermal protection module capable of controlling the on-off of the second lug plate and the fixed contact plate is also arranged between the second lug plate and the fixed contact plate. The invention has the advantages of simple structure, simple and convenient assembly, small volume, wide application range, reliable action, more accurate temperature control, stable and reliable performance and thermal protection function.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a temperature controller with a thermal protection function.
[ background of the invention ]
The temperature controller is mainly used in various electrothermal containers such as water heaters, disinfection cabinets, electromagnetic ovens, water dispensers, refrigerators and the like as a temperature sensing element, and utilizes the characteristic that the central deformation surface of a bimetallic strip can generate reverse snap when the bimetallic strip is subjected to temperature change to separate a moving contact and a static contact which are connected in series in an electrothermal loop through an execution structure connected with the bimetallic strip, so that the electrothermal element is powered off, and the electrothermal container is protected.
At present, ordinary temperature controller only possesses single function, generally can only the controlled temperature or just can carry out failure protection to the temperature controller, generally can not possess two kinds of functions simultaneously, like this, when this temperature controller became invalid, just caused the incident very easily. Thus, for example, the chinese invention "three-phase dual-control thermostat" with patent number ZLZ00420113968.7 discloses a thermostat with dual safety of temperature control and temperature limitation, in which a temperature control mechanism and a temperature limiting mechanism are disposed in a base and a cover. However, the temperature controller utilizes the principle that liquid expands due to heating, so that liquid leakage is easy to occur in the using process, and the temperature controller has more parts and more complex structures. In addition, the invention of china with patent number zlz00520141970.x, the two-in-one temperature controller, is also a temperature controller with dual protection functions, which comprises a common temperature control device and a temperature limiting device, and can realize normal temperature control in a normal state and power-off protection at high temperature; however, the patent still adopts the liquid expansion principle to carry out temperature control, needs to add an anti-leakage device in the structural design, has increased the complexity of design, has improved the design cost.
[ summary of the invention ]
The invention aims to overcome the defects of the prior art and provides the temperature controller with the thermal protection function, which has the advantages of simple structure, simple and convenient assembly, small volume, wide application range, reliable action, more accurate temperature control and stable and reliable performance.
The purpose of the invention is realized as follows:
a temperature controller with thermal protection function is characterized by comprising a top plate, a first lug plate, a fixed contact plate, a second lug plate and an adjustable bimetallic strip, wherein the top plate is fixed on a fixed rod from top to bottom and is insulated and separated from the fixed rod; an adjusting assembly is arranged on the top plate, the first lug plate is connected with a spring plate assembly which can be communicated with the fixed contact plate, a porcelain push is connected between the adjustable bimetallic strip and the spring plate assembly, and the adjusting assembly is provided with a jacking pin which can push the spring plate assembly; and a thermal protection module capable of controlling the on-off of the second lug plate and the fixed contact plate is also arranged between the second lug plate and the fixed contact plate.
The temperature controller with the thermal protection function is characterized in that the thermal protection module comprises a thermal protection support, one end of the thermal protection support is fixed on the fixing rod, the thermal protection support is communicated with the second wiring piece, a thermal protection bimetallic strip is arranged on the thermal protection support, and the thermal protection support is further connected with a heating body capable of controlling the action of the thermal protection bimetallic strip.
The temperature controller with the thermal protection function is characterized in that the heating element is a heating core ring which is sleeved on the fixed rod and is communicated with the thermal protection support, a support lower elastic sheet is arranged on the thermal protection support, a lower elastic sheet movable contact is arranged on the support lower elastic sheet, and the fixed contact sheet is provided with a fixed contact sheet first contact which is contacted with the elastic sheet assembly and a fixed contact sheet second contact which is contacted with the lower elastic sheet movable contact.
The temperature controller with the thermal protection function is characterized in that the heating element is a heating core fixed on a thermal protection support, the fixed contact piece is connected with an elastic pressing piece covered on the heating core, the thermal protection support is provided with a support lower elastic piece, the support lower elastic piece is provided with a lower elastic piece movable contact point, the fixed contact piece is provided with a touch rod, one end of the elastic pressing piece is sleeved on the touch rod, the upper end of the touch rod can be in contact with the elastic piece assembly, and the lower end of the touch rod can be in contact with the lower elastic piece movable contact point.
The temperature controller with the thermal protection function is characterized in that the thermal protection bracket is also provided with a manual reset rod, and the inner side of the manual reset rod is abutted against the thermal protection bimetallic strip.
The invention has the beneficial effects that:
the invention has the advantages of simple structure, simple and convenient assembly, small volume, wide application range, reliable action, more accurate temperature control, stable and reliable performance and thermal protection function.
[ description of the drawings ]
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a block diagram of a first embodiment of the present invention;
FIG. 3 is a perspective view of a second embodiment of the present invention;
FIG. 4 is a side view of a second embodiment of the present invention;
fig. 5 is a structural diagram of a second embodiment of the present invention.
[ detailed description ] embodiments
The invention will be further described with reference to the accompanying drawings in which:
a temperature controller with thermal protection function is characterized in that the temperature controller comprises a top plate 2, a first lug plate 3, a fixed contact plate 4, a second lug plate 5 and an adjustable bimetallic strip 6, wherein the top plate 2, the first lug plate, the fixed contact plate 4, the second lug plate and the adjustable bimetallic strip are fixed on a fixed rod 1 from top to bottom and are insulated and separated from each other; an adjusting component 7 is arranged on the top plate 2, the first wiring piece 3 is connected with a spring piece component 8 which can be communicated with the fixed contact piece 4, a porcelain push 9 is connected between the adjustable bimetallic strip 6 and the spring piece component 8, and the adjusting component 7 is provided with a top pin 71 which can push the spring piece component 8; and a thermal protection module 10 capable of controlling the on-off of the second lug and the fixed contact piece is also arranged between the second lug 5 and the fixed contact piece 4.
The thermal protection module 10 comprises a thermal protection bracket 11 with one end fixed on the fixing rod 1, the thermal protection bracket 11 is communicated with the second wiring piece 5, a thermal protection bimetallic strip 12 is arranged on the thermal protection bracket 11, and the thermal protection bracket 11 is also connected with a heating body 13 capable of controlling the action of the thermal protection bimetallic strip 12.
The heat generating body 13 may be a PTC heat generating chip, a heat generating ceramic, or the like.
In the structure, the heating body 13, the thermal protection bimetallic strip 12, the thermal protection bracket 11 and the fixed contact piece 4 form a parallel circuit; under the normal use condition, the thermal protection bracket 11 and the fixed contact piece 4 are always kept in a closed state; when the circuit or the environment temperature is abnormal, the thermal protection snap-through type double-gold-sheet snap-through overturn; the thermal protection bracket 11 is separated from the fixed contact piece 4, and the circuit is cut off; at this time, the heating element 13 in the parallel circuit operates, self-heating is kept at a certain temperature range point and a high resistance value is generated; the load in the circuit stops running; the high temperature generated by the heating element 13 prevents the thermal protection bimetallic strip 12 from automatically resetting and keeps a turnover state; the thermal protection bracket 11 and the fixed contact piece 4 are kept in a separated state. When the power supply is manually cut off, the heating body 13 starts to cool, when the local environment temperature is reduced to the reset temperature point of the thermal protection bimetallic strip 12, the thermal protection bimetallic strip 12 resets and turns over, and the circuit is restored to be connected.
The first embodiment is as follows:
the heating element 13 is a heating core ring 131 which is sleeved on the fixed rod 1 and is communicated with the thermal protection support 11, the thermal protection support 11 is provided with a support lower elastic sheet 111, the support lower elastic sheet 111 is provided with a lower elastic sheet moving contact 112, and the fixed contact piece 4 is provided with a fixed contact piece first contact 41 contacted with the elastic sheet component 8 and a fixed contact piece second contact 42 contacted with the lower elastic sheet moving contact.
The heating body 13, the thermal protection bimetallic strip 12, the bracket lower spring 111, the lower spring movable contact 112 and the fixed contact second contact 42 form a parallel circuit; under the normal use condition, the lower spring piece movable contact 112 and the fixed contact piece second contact 42 are always kept in a closed state; when the circuit or the ambient temperature is abnormal; thermally protecting the jump type double-gold-sheet jump overturning; the lower spring sheet movable contact 112 is separated from the fixed contact sheet second contact 42, and the circuit is cut off; at this time, the heating element 13 in the parallel circuit operates, self-heating is kept at a certain temperature range point and a high resistance value is generated; stopping the operation of the load in the circuit; the high temperature generated by the heating element 13 prevents the thermal protection bimetallic strip 12 from automatically resetting and keeps a turning state; the lower spring movable contact 112 and the fixed contact second contact 42 remain separated. After the power supply is manually cut off, the heating body 13 starts to cool, when the local environment temperature is reduced to the reset temperature point of the thermal protection bimetallic strip 12, the thermal protection bimetallic strip 12 resets and turns over, and the circuit is restored to be connected.
Example two:
the heating element 13 is a heating core 132 fixed on the thermal protection support 11, the fixed contact piece 4 is connected with an elastic pressing piece 14 covering the heating core, the thermal protection support 11 is provided with a support lower spring piece 111, the support lower spring piece 11 is provided with a lower spring piece movable contact 112, the fixed contact piece 4 is provided with a touch rod 43, one end of the elastic pressing piece 14 is sleeved on the touch rod 43, the upper end of the touch rod 43 can be contacted with the spring piece assembly 8, and the lower end of the touch rod 43 can be contacted with the lower spring piece movable contact 112. The working principle is the same as that of the first embodiment.
As shown in fig. 5, the thermal protection bracket 11 is further provided with a manual reset rod 15, the inner side of the manual reset rod 15 abuts against the lower end of the thermal protection bimetallic strip 12, the middle part of the manual reset rod 15 is fixed with the thermal protection bracket 11, and the thermal protection bimetallic strip 12 can be pushed to reset by pressing the manual reset rod 15.
Claims (5)
1. A temperature controller with a thermal protection function is characterized by comprising a top plate (2), a first lug plate (3), a fixed contact plate (4), a second lug plate (5) and an adjustable bimetallic strip (6), wherein the top plate (2) is fixed on a fixed rod (1) from top to bottom and is insulated and separated from each other; an adjusting assembly (7) is arranged on the top plate (2), the first lug plate (3) is connected with a spring plate assembly (8) which can be communicated with the fixed contact plate (4), a porcelain push (9) is connected between the adjustable bimetallic strip (6) and the spring plate assembly (8), and the adjusting assembly (7) is provided with a top pin (71) which can push the spring plate assembly (8); and a thermal protection module (10) capable of controlling the on-off of the second lug plate and the fixed contact plate is also arranged between the second lug plate (5) and the fixed contact plate (4).
2. The thermostat with the thermal protection function according to claim 1, wherein the thermal protection module (10) comprises a thermal protection bracket (11) having one end fixed to the fixing rod (1), the thermal protection bracket (11) is electrically connected to the second terminal (5), a thermal protection bimetal (12) is disposed on the thermal protection bracket (11), and the thermal protection bracket (11) is further connected to a heating element (13) capable of controlling the thermal protection bimetal (12) to operate.
3. A thermostat with thermal protection function according to claim 2, characterized in that the heating element (13) is a heating core ring (131) sleeved on the fixing rod (1) and conducted with the thermal protection bracket (11), the thermal protection bracket (11) is provided with a bracket lower spring (111), the bracket lower spring (111) is provided with a lower spring moving contact (112), and the fixed contact piece (4) is provided with a fixed contact piece first contact (41) contacted with the spring assembly (8) and a fixed contact piece second contact (42) contacted with the lower spring moving contact.
4. A thermostat with thermal protection function according to claim 2, characterized in that the heating element (13) is a heating core (132) fixed on the thermal protection bracket (11), the fixed contact piece (4) is connected with an elastic pressing piece (14) covering the heating core, the thermal protection bracket (11) is provided with a bracket lower spring (111), the bracket lower spring (11) is provided with a lower spring movable contact (112), the fixed contact piece (4) is provided with a touch rod (43), one end of the elastic pressing piece (14) is sleeved on the touch rod (43), the upper end of the touch rod (43) can be contacted with the spring assembly (8), and the lower end of the touch rod (43) can be contacted with the lower spring movable contact (112).
5. A thermostat with thermal protection function according to claim 2, characterized in that the thermal protection bracket (11) is further provided with a manual reset lever (15), and the inner side of the manual reset lever (15) abuts against the thermal protection bimetallic strip (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385988.XA CN112420448A (en) | 2020-12-02 | 2020-12-02 | Temperature controller with thermal protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385988.XA CN112420448A (en) | 2020-12-02 | 2020-12-02 | Temperature controller with thermal protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112420448A true CN112420448A (en) | 2021-02-26 |
Family
ID=74829352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011385988.XA Pending CN112420448A (en) | 2020-12-02 | 2020-12-02 | Temperature controller with thermal protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112420448A (en) |
-
2020
- 2020-12-02 CN CN202011385988.XA patent/CN112420448A/en active Pending
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