Temperature controller capable of preventing inclination fusing protector from fusing in advance

Abstract

The temperature controller comprises a seat body and a metal support, the seat body is provided with a line on-off switch, the metal support is connected with the top of the seat body and is provided with a first anti-dry-burning assembly, the metal support far away from the first anti-dry-burning assembly is provided with a fusing assembly, and the first anti-dry-burning assembly is provided with a second anti-dry-burning assembly. The first anti-dry-burning assembly and the fusing assembly are adjacent to or abut against the line on-off switch in a matched mode, a second anti-dry-burning assembly is arranged beside the fusing assembly, the side, opposite to the first anti-dry-burning assembly, of the second anti-dry-burning assembly is arranged on the metal support, and the second anti-dry-burning assembly is adjacent to or abut against the line on-off switch in a matched mode. According to the temperature controller, the anti-dry-burning assembly is additionally arranged beside the fusing assembly, when the electric kettle is in an inclined state during water boiling, even if the temperature of the side, corresponding to the fusing assembly, of the heating disc rises, the second anti-dry-burning assembly can disconnect the heating circuit earlier than the fusing assembly, and the situation that the fusing assembly is scrapped due to pouring and water boiling is avoided.

Description

Technical Field

[0001] The utility model relates to the field of temperature controllers, in particular to a temperature controller with an anti-tilting fuse protector that fuses in advance. Background Art

[0002] At present, the electric kettle mainly includes a kettle body and a heating plate installed at the bottom of the kettle body, wherein a thermostat is also installed at the bottom of the heating plate to control the on and off of the working circuit of the heating plate to prevent the heating plate from burning dry. The current thermostat structure is as shown in the Chinese patent document, application number: CN202021830527.4, a small household appliance thermostat for preventing dry burning, which mainly includes a base, a metal plate, a contact group, a fuse rod, a temperature-sensing on-off component and a thermistor. In this prior art, The reaction temperature of the fuse rod is usually higher than that of the temperature-sensing switch assembly. During installation, the fuse rod and the opposite sides of the temperature-sensing fuse assembly are arranged on a metal plate. Therefore, when the electric kettle is boiling water, the kettle body tilts and tilts to the side of the temperature-sensing switch assembly. The temperature of the temperature-sensing switch assembly is in a normal working state, but the temperature of the side of the heating plate corresponding to the fuse rod will increase, causing the fuse rod to misjudge that the electric kettle is dry-boiling. The fuse rod melts and disconnects the working circuit of the heating plate. Since the fuse rod is a disposable safety structure, the electric kettle is scrapped due to tilting to boil water, causing great waste. Therefore, the applicant provides a new solution to the above-mentioned problem by improving and perfecting the existing technology for consumers to choose and use. Summary of the invention

[0003] The utility model aims to provide a thermostat with an anti-tilting fuse protector that blows in advance, which has a simple and reasonable structure, is easy to install and has a stable structure.

[0004] A thermostat with an anti-tilt fuse protector that blows prematurely, comprising a seat and a metal bracket, wherein a line on-off switch is arranged on the seat, the metal bracket is connected to the top of the seat and is provided with a first anti-dry-burning component, a fuse component is arranged on the metal bracket away from the first anti-dry-burning component, the first anti-dry-burning component and the fuse component are adjacent to or abut against the line on-off switch, a second anti-dry-burning component is arranged on the side of the fuse component, the second anti-dry-burning component is arranged on the metal bracket on the opposite side of the first anti-dry-burning component, and the second anti-dry-burning component is adjacent to or abut against the line on-off switch.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the line on-off switch includes two groups of spring leaf groups connected in series; the first anti-dry-burning component is adjacent to or abuts against the moving contact piece of one group of spring leaf groups; the other group of spring leaf groups includes double moving contacts, the fuse component abuts against one of the moving contacts, and the second anti-dry-burning component is adjacent to or abuts against the other moving contact piece.

[0007] As a further solution, the fuse assembly includes hot-melt particles and a movably assembled fuse seat, the bottom of the fuse seat extends with an insulating pressure rod that abuts against another group of spring plates, and the hot-melt particles are fixed to the top of the fuse seat and abut against the metal bracket.

[0008] As a further solution, the first anti-dry burning component and the second anti-dry burning component both include a bimetallic strip assembled and connected to a metal bracket and an insulating push rod movably assembled between the bimetallic strip and the spring sheet group. The insulating push rod of the first anti-dry burning component is adjacent to or against a moving contact piece of one group of spring sheets, and the insulating push rod of the second anti-dry burning component is adjacent to or against another moving contact piece of another group of spring sheets.

[0009] As a further solution, two insulating cover plates are assembled and connected in the base body, and two insulating chambers for limiting two groups of spring groups are respectively formed between the base body and the two insulating cover plates, and both insulating cover plates are provided with guide holes that form a linear sliding fit with the insulating push rod, and one of the insulating cover plates is provided with a positioning groove that forms a linear sliding fit with the fuse seat.

[0010] As a further solution, the seat body is provided with a plurality of insertion holes on the inner wall close to the fuse assembly and the second anti-dry burning assembly, each of which is plugged with an insulating support rod, and the top of the insulating support rod is adjacent to or against the bottom surface of the metal bracket.

[0011] As a further solution, the metal bracket is stamped into an upwardly protruding contact platform, and the contact platform and the metal bracket are supported and connected by a plurality of circumferentially evenly distributed connecting ribs. The hot-melt particles are supported on the contact platform, and a temperature sensing port is formed between two adjacent connecting ribs.

[0012] As a further solution, an insulating partition wall extends upwards in the base body, and the insulating partition wall is arranged between the two groups of spring pieces.

[0013] As a further solution, the base body has a horseshoe-shaped structure, and a number of connecting bosses are evenly distributed on its inner wall. The metal bracket has a circular ring structure, and connecting holes are opened on the inner edge corresponding to the connecting bosses. The fastening unit passes through the connecting holes and the connecting bosses from top to bottom to assemble and connect the metal bracket with the base body.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model discloses a thermostat with an anti-tilting fuse protector that blows in advance. This thermostat is provided with a group of anti-dry-burning components beside the fuse component. When the electric kettle is tilted when boiling water, even if the temperature of one side of the heating plate corresponding to the fuse component rises, the second anti-dry-burning component can disconnect the heating circuit earlier than the fuse component. This can prevent the electric kettle from tilting to boil water at a low water level and avoid the electric kettle being scrapped prematurely due to the disposable fuse component tilting to boil water, thereby improving the durability and safety of the electric kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0017] Figure 2 This is a schematic diagram of the top view of the temperature controller in the utility model.

[0018] Figure 3 This is a schematic diagram of the exploded structure of the temperature controller in the utility model.

[0019] Figure 4 It is a schematic diagram of the local structure of the utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the line on-off switch in the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, a thermostat with an anti-tilt fuse protector that blows in advance comprises a seat body 1 and a metal bracket 2, a line on-off switch 4 is arranged on the seat body 1, the metal bracket 2 is connected to the top of the seat body 1 and is provided with a first anti-dry-burning component 5, a fuse component 6 is arranged on the metal bracket 2 away from the first anti-dry-burning component 5, the first anti-dry-burning component 5 and the fuse component 6 are adjacent to or abut against the line on-off switch 4, a second anti-dry-burning component 7 is arranged on the side of the fuse component 6, the second anti-dry-burning component 7 is arranged on the metal bracket 2 on the opposite side of the first anti-dry-burning component 5, and the second anti-dry-burning component 7 is adjacent to or abuts against the line on-off switch 4.

[0023] This thermostat is provided with an additional set of anti-dry-burning components beside the fuse component 6. When the electric kettle is tilted when boiling water, even if the temperature of the side of the heating plate corresponding to the fuse component 6 rises, the second anti-dry-burning component 7 can disconnect the heating circuit earlier than the fuse component 6, thereby preventing the electric kettle from tilting to boil water at a low water level and preventing the disposable fuse component 6 from being scrapped prematurely due to tilting to boil water, thereby improving the durability and safety of the electric kettle.

[0024] The line on-off switch 4 includes two groups of spring leaf groups connected in series; the first anti-dry-burning component 5 is adjacent to or against the moving contact piece 4a of one group of spring leaf groups 41; the other group of spring leaf groups includes double moving contacts 4b and 4c, the fuse component 6 is against one of the moving contacts 4b, and the second anti-dry-burning component 7 is adjacent to or against the other moving contact piece 4c; one group of spring leaf groups 42 is connected in series to the neutral line, and the other group of spring leaf groups is connected in series to the live line, so that the first anti-dry-burning component 5, the second anti-dry-burning component 7 and the fuse component 6 independently switch on and off the neutral line and the live line, play a double insurance role, and improve safety.

[0025] In this embodiment, the fuse assembly 6 includes hot-melt particles 61 and a movably assembled fuse seat 62, and an insulating pressure rod 63 extends from the bottom of the fuse seat 62 and abuts against another group of spring sheets. The hot-melt particles 61 are fixed to the top of the fuse seat 62 and abut against the metal bracket 2; after the hot-melt particles 61 are overheated and melted, a moving contact piece 4b of the other group of spring sheets pushes the insulating pressure rod 63 to reset to disconnect the line on-off switch 4.

[0026] The first anti-dry-burning component 5 and the second anti-dry-burning component 7 both include a bimetallic strip 81 assembled and connected to the metal bracket 2 and an insulating push rod 82 movably assembled between the bimetallic strip 81 and the spring sheet group. The insulating push rod 82 of the first anti-dry-burning component 5 is adjacent to or against the moving contact piece 4a of one group of spring sheets, and the insulating push rod 82 of the second anti-dry-burning component 7 is adjacent to or against another moving contact piece 4c of another group of spring sheets. After the bimetallic strip 81 is overheated and deformed, the insulating push rod 82 is driven to push the moving contact piece away to disconnect the other group of spring sheets.

[0027] Two insulating cover plates 3 are assembled and connected inside the base body 1, and two insulating chambers for limiting two groups of spring groups are respectively formed between the base body 1 and the two insulating cover plates 3, and guide holes 31 for linear sliding cooperation with the insulating push rod 82 are provided on the two insulating cover plates 3, and a positioning groove 32 for linear sliding cooperation with the fuse seat 62 is provided on one of the insulating cover plates 3, and a through hole suitable for the insulating pressure rod 63 to pass through is provided at the bottom of the positioning groove 32; the insulating cover plates 3 support and guide the fuse seat 62 and the insulating push rod 82.

[0028] The base body 1 is provided with a plurality of insertion holes 101 on the inner wall close to the fuse component 6 and the second anti-dry-burning component 7, and an insulating support rod 11 is inserted into each insertion hole 101. The top of the insulating support rod 11 is adjacent to or against the bottom surface of the metal bracket 2; the insulating support rod 11 is made of high-temperature resistant ceramic material and does not conduct heat. The insulating support rod 11 supports the outer edge position of the metal bracket 2 to prevent the metal bracket 2 from sagging at high temperature.

[0029] The metal bracket 2 is formed by stamping to form an upwardly raised contact platform 201, and the contact platform 201 and the metal bracket 2 are supported and connected by a plurality of circumferentially evenly distributed connecting ribs 202. The hot-melt particles 61 are supported on the contact platform 201, and a temperature-sensing port 203 is formed between two adjacent connecting ribs 202. The contact platform 201 of this structure can reduce heat loss and increase the reaction speed of the hot-melt particles 61, and the temperature-sensing port 203 plays a convection role, which can reduce the heat barrier of the metal bracket 2 and further increase the reaction speed of the hot-melt particles 61.

[0030] An insulating partition wall 12 extends upwards in the base body 1 and is disposed between the two groups of spring leaf groups. The insulating partition wall 12 can increase the creepage distance between the two groups of spring leaf groups, thereby improving the safety of the thermostat.

[0031] The base body 1 is in a horseshoe-shaped structure, and a plurality of insulating connection bosses 13 are evenly distributed on its inner wall. The metal bracket 2 is in a circular ring structure, and a connecting through hole 204 is opened on the inner edge corresponding to the insulating connection boss 13. The metal bracket 2 is assembled and connected to the base body 1 by passing the connecting through hole 204 and the insulating connection boss 13 from top to bottom through the fastening unit; the structure is simple, and the assembly is convenient and quick.

[0032] In this embodiment, the angle between the first anti-dry burning component and the fuse component is α, and 115°≤α≤145°; the angle between the first anti-dry burning component and the first anti-dry burning component is β, and 150°≤β≤180°.

[0033] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A thermostat with an anti-tilt fuse protector that blows prematurely, comprising a seat and a metal bracket, the seat is provided with a line on-off switch, the metal bracket is connected to the top of the seat and is provided with a first anti-dry-burning component, a fuse component is provided on the metal bracket away from the first anti-dry-burning component, the first anti-dry-burning component and the fuse component are adjacent to or abut against the line on-off switch, characterized in that A second anti-dry-burning component is arranged on the side of the fuse component, and the second anti-dry-burning component is arranged on the metal bracket on the opposite side of the first anti-dry-burning component, and the second anti-dry-burning component is adjacent to or abuts against the line on-off switch.

2. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 1, characterized in that :The line on-off switch includes two groups of spring leaf groups connected in series; the first anti-dry-burning component is adjacent to or against the moving contact piece of one group of spring leaf groups; the other group of spring leaf groups includes double moving contacts, the fuse component is against one of the moving contacts, and the second anti-dry-burning component is adjacent to or against the other moving contact piece.

3. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 2, characterized in that The fuse assembly includes hot-melt particles and a movably assembled fuse seat, the bottom of the fuse seat extends with an insulating pressure rod that abuts against another group of spring sheets, and the hot-melt particles are fixed on the top of the fuse seat and abut against the metal bracket.

4. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 3, characterized in that :The first anti-dry-burning component and the second anti-dry-burning component both include a bimetallic strip assembled and connected to a metal bracket and an insulating push rod movably assembled between the bimetallic strip and the spring sheet group. The insulating push rod of the first anti-dry-burning component is adjacent to or against a moving contact piece of one group of spring sheets, and the insulating push rod of the second anti-dry-burning component is adjacent to or against another moving contact piece of another group of spring sheets.

5. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 4, characterized in that : Two insulating cover plates are assembled and connected in the base body, and two insulating chambers for limiting two groups of spring groups are formed between the base body and the two insulating cover plates, and guide holes for linear sliding cooperation with the insulating push rod are provided on the two insulating cover plates, and a positioning groove for linear sliding cooperation with the fuse seat is provided on one of the insulating cover plates.

6. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 1, characterized in that The seat body is provided with a plurality of insertion holes on the inner wall close to the fuse assembly and the second anti-dry burning assembly, and an insulating support rod is inserted into each insertion hole, and the top of the insulating support rod is adjacent to or against the bottom surface of the metal bracket.

7. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 3, characterized in that The metal bracket is formed into an upwardly protruding contact platform by stamping, and the contact platform and the metal bracket are supported and connected by a plurality of circumferentially evenly distributed connecting ribs. The hot-melt particles are supported on the contact platform, and a temperature-sensing port is formed between two adjacent connecting ribs.

8. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 2, characterized in that An insulating partition wall extends upward from the base body, and the insulating partition wall is arranged between the two groups of spring pieces.

9. A thermostat with an anti-tilt fuse protector that blows prematurely according to claim 1, characterized in that The seat body is in a horseshoe-shaped structure, and a number of connecting bosses are evenly distributed on its inner wall. The metal bracket is in a circular ring structure, and connecting holes are opened on the inner edge corresponding to the connecting bosses. The fastening unit passes through the connecting holes and the connecting bosses from top to bottom to assemble and connect the metal bracket with the seat body.

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