CN211150422U

CN211150422U - Coupler with multiple dry burning prevention protection

Info

Publication number: CN211150422U
Application number: CN202020040648.2U
Authority: CN
Inventors: 符文伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-07-31
Anticipated expiration: 2030-01-08

Abstract

A coupler with multiple dry burning prevention protection comprises a coupling seat and a connecting support, wherein a first bimetallic strip and a second bimetallic strip are mounted on the connecting support, and when the first bimetallic strip or/and the second bimetallic strip sense that the temperature of a heating body exceeds a preset temperature value, a first insulating part or/and a second insulating part is correspondingly pushed to disconnect a zero line conductive circuit and a live line conductive circuit; the coupling seat is provided with a fusing linkage assembly, the fusing linkage assembly is elastically pressed on the zero line conducting circuit and the live line conducting circuit, the fusing linkage assembly is connected with a fusing part extending out of the upper part of the connecting support, the fusing part is pressed on the heating body, and when the fusing part senses that the temperature of the heating body exceeds a preset temperature value, the fusing part is dissolved at high temperature, and the fusing linkage assembly is triggered to simultaneously disconnect the zero line conducting circuit and the live line conducting circuit; the coupler adopts a triple dry burning prevention structure, and can prevent the dry burning prevention function failure of the electric heating device caused by the damage of a single dry burning prevention structure.

Description

Coupler with multiple dry burning prevention protection

Technical Field

The utility model relates to a coupler field specifically is a multiple coupler of preventing dry combustion method protection.

Background

At present, the coupler is used on electric heater unit more, be provided with one or two bimetallic strips with the conducting wire series connection on traditional coupling seat, the real-time kettle body bottom temperature of response of bimetallic strip when preventing dry combustion method, when sensing the temperature and equaling or surpassing the temperature default, the bimetallic strip is heated and is out of shape and promote the insulator spindle, with the disconnection conducting wire, realize preventing the effect of dry combustion method, but present bimetallic strip part the same structure still has the same quality problem and deficiency, prevent dry combustion method inefficacy appears easily, cause the power consumption incident, and under the increasingly strict ann rule requirement, some couplers fail to satisfy the ann rule requirement condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned current problem, provide a simple structure, reasonable a multiple coupler of preventing dry combustion method protection, its effect is that can prevent to lead to electric heater unit to prevent after single preventing dry combustion method structural damage dry combustion method functional failure.

A coupler with multiple dry burning prevention protection comprises a coupling seat and a connecting support, wherein the coupling seat is closely or oppositely arranged on a heating body, the connecting support is arranged above the coupling seat, the coupling seat is provided with a zero line conducting circuit and a live line conducting circuit, a first bimetal sheet and a second bimetal sheet are arranged on the connecting support, the first bimetal sheet and the second bimetal sheet are closely or closely arranged with the heating body, a first insulating part is movably arranged between the first bimetal sheet and the zero line conducting circuit, a second insulating part is movably arranged between the second bimetal sheet and the live line conducting circuit, and when the first bimetal sheet or/and the second bimetal sheet sense that the temperature of the heating body exceeds a preset temperature value, the first insulating part or/and the second insulating part are correspondingly pushed to disconnect the zero line conducting circuit and the live line conducting circuit;

the coupling seat is provided with a fusing linkage assembly, the fusing linkage assembly is elastically pressed and propped on the zero line conductive circuit and the live line conductive circuit, a fusing part extending out of the upper portion of the connecting support is connected to the fusing linkage assembly, the fusing part is pressed and propped on the heating body, and when the fusing part senses that the temperature of the heating body exceeds a temperature preset value, the fusing part is dissolved at high temperature, and the fusing linkage assembly is triggered to break the zero line conductive circuit and the live line conductive circuit at the same time.

This coupler adopts triple anti-dry heating structure, manages zero line and live wire line conducting wire respectively when first bimetallic strip and second bimetallic strip, can prevent to lead to electric heating device's anti-dry heating function failure after single anti-dry heating structure damages, and three kinds of anti-dry heating structures of difference can avoid the self shortcoming of three kinds of anti-dry heating structures in addition, ensure to have multiple safety guarantee in the use, satisfy the ann rule requirement of part liquid electric heater.

The utility model discloses can also adopt following technical measure to solve:

the first bimetal is in a circular sheet shape, an eccentric circular or similar circular through hole is formed in the first bimetal, a tongue piece extending to the through hole is arranged on the first bimetal, the extending direction of the tongue piece is consistent with the eccentric direction of the through hole, a positioning hole used for being connected with the connecting support is formed in the extending end portion of the tongue piece, a temperature sensing area close to or abutting against a heating body is arranged at one end, connected with the root portion of the tongue piece, of the first bimetal, and a kick wing movably pressing the tip portion of the tongue piece is arranged at one end, opposite to the tip portion, of the first bimetal.

The second bimetallic strip is in a disc shape and comprises a passive dome at the center, the passive dome is movably pressed on the second insulating part, the periphery of the passive dome extends to form an arc surface which is heated and deformed, and when the arc surface senses that the temperature of the heating body exceeds a preset temperature value, the arc surface is folded along a seam between the arc surface and the passive dome, so that the arc surface drives the passive dome to move downwards and press against the second insulating part.

The fusing linkage assembly comprises a swinging arm arranged on the coupling seat and a rotating shaft seat rotatably connected with the middle part of the swinging arm;

a power-off spring which is matched with the connecting support in a pressing mode is arranged on the top face of one end of the swing arm, and two power-off voltage connection portions extend on the bottom face corresponding to the zero line conducting circuit and the fire line conducting circuit;

and a vertically extending fuse is arranged on the top surface of the other end of the swing arm.

The zero line conducting circuit comprises a zero line movable contact piece and a zero line fixed contact piece, a first movable contact is mounted at the movable end of the zero line movable contact piece, a first fixed contact is mounted on the zero line fixed contact piece, and the first movable contact is elastically contacted with the first fixed contact through the movable pressing of the zero line movable contact piece by a first insulating piece to realize the disconnection or connection of the zero line conducting circuit;

the live wire conducting circuit comprises a live wire movable contact piece and a live wire fixed contact piece, a second movable contact is installed at the movable end of the live wire movable contact piece, a second fixed contact is installed on the live wire fixed contact piece, and the second movable contact is movably pressed by a second insulating piece to elastically contact the second fixed contact through the live wire movable contact piece to realize disconnection or connection of the live wire conducting circuit.

The bottom of coupling seat has been seted up the grafting chamber, installs the electrically conductive ring of live wire, the electrically conductive ring of zero line and bottom wire center post in the grafting chamber, and the electrically conductive ring of live wire is connected with the stiff end of live wire movable contact piece, and the electrically conductive ring of zero line is connected with the stiff end of zero line movable contact piece.

The first bimetallic strip and the second bimetallic strip are arranged on the connecting support in a left-right mode, a through hole is formed in the connecting support between the first bimetallic strip and the second bimetallic strip, and the fuse element extends out of the upper portion of the connecting support through the through hole.

The connecting support is provided with an opening, and the second bimetallic strip is arranged below the opening or in the opening.

The first insulating part and the second insulating part are vertically arranged columnar bodies, and two guide supports which respectively play a role in guiding the first insulating part and the second insulating part are arranged on the coupling seat (1).

The utility model has the advantages as follows:

the utility model relates to a multiple coupler of preventing dry combustion method protection, moreover, the steam generator is simple in structure, this coupler adopts triple dry combustion method structure of preventing, manage zero line and live wire line conducting wire respectively as first bimetallic strip and second bimetallic strip, can prevent that single dry combustion method structure from damaging the back and leading to electric heater unit's dry combustion method functional failure, three kinds of differences prevent dry combustion method structure can avoid three kinds of self shortcomings of preventing dry combustion method structure in addition, ensure to have multiple safety guarantee in the use, satisfy the ann rule requirement of part liquid electric heater.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially exploded view of the first embodiment of the present invention.

Fig. 3 is a partially exploded view of the second embodiment of the present invention.

Fig. 4 is a schematic structural view of the fusing linkage assembly of the present invention.

Fig. 5 is a schematic view of the working principle structure of the present invention.

Fig. 6 is a schematic view illustrating the thermal deformation of the first bimetal sheet and the second bimetal sheet according to the present invention.

Fig. 7 is a schematic view of the thermal-melting structure of the fuse of the present invention.

Fig. 8 is a schematic view of the conductive ring structure of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in figures 1 to 8, a coupler with multiple dry-burning prevention protection comprises a coupling seat 1 which is closely or abuttingly arranged on a heating body, and a connecting bracket 2 arranged above the coupling seat 1, the coupling seat 1 is provided with a zero line conductive circuit 3 and a fire line conductive circuit 4, a first bimetallic strip 5 and a second bimetallic strip 6 are arranged on the connecting bracket 2, the first bimetallic strip 5 and the second bimetallic strip 6 are arranged close or close to the heating element, a first insulating part 7 is movably arranged between the first bimetallic strip 5 and the zero line conducting circuit 3, a second insulating part 8 is movably arranged between the second bimetallic strip 6 and the live line conducting circuit 4, when the first bimetal sheet 5 or/and the second bimetal sheet 6 senses that the temperature of the heating body exceeds the preset temperature value, correspondingly pushing the first insulating part 7 or/and the second insulating part 8 to break the zero line conducting circuit 3 and the live line conducting circuit 4;

the coupling seat 1 is provided with a fusing linkage component 9, the fusing linkage component 9 is elastically pressed and supported on the zero line conductive circuit 3 and the fire line conductive circuit 4, the fusing linkage component 9 is connected with a fusing part 10 extending out of the upper portion of the connecting support 2, the fusing part 10 is pressed and supported on the heating body, when the fusing part 10 senses that the temperature of the heating body exceeds a preset temperature value, the fusing part 10 is dissolved at high temperature, and the fusing linkage component 9 is triggered to simultaneously disconnect the zero line conductive circuit 3 and the fire line conductive circuit 4.

This coupler adopts triple anti-dry heating structure, manages zero line 3 and live wire line conducting wire 4 respectively when first bimetallic strip 5 and second bimetallic strip 6, can prevent to prevent that single anti-dry heating structure from damaging the back and leading to electric heater unit's anti-dry heating function inefficacy, and three kinds of different anti-dry heating structures can avoid the self shortcoming of three kinds of anti-dry heating structures in addition, ensure to have multiple safety guarantee in the use, satisfy the ann rule requirement of part liquid electric heater.

The first bimetal 5 is in a circular sheet shape, an eccentric circular or similar circular through hole 51 is formed in the first bimetal 5, a tongue piece 52 extending to the through hole 51 is arranged on the first bimetal 5, the extending direction of the tongue piece 52 is consistent with the eccentric direction of the through hole 51, a positioning hole 53 used for being connected with the connecting bracket 2 is formed in the extending end part of the tongue piece 52, a temperature sensing area 54 close to or abutting against a heating body is arranged at one end of the first bimetal 5 connected with the root part of the tongue piece 52, and a jump wing 55 movably pressing against the first insulating part 7 is arranged at one end of the first bimetal 5 opposite to the tip part of the tongue piece 52; when the bimetallic strip of this structure uses, install on linking bridge 2 through locating hole 53, after the heat-generating body is installed to the coupler, temperature sensing area 54 is close or the heat-generating body of offseting, when the temperature of heat-generating body surpassed the temperature value that first bimetallic strip 5 set for, jump wing 55 down deformation presses and supports first insulating part 7, make zero line conducting wire 3 disconnection, but the bimetallic strip of this structure can appear becoming flexible after the assembly, make it appear the error when deformation, lead to preventing dry combustion failure, consequently need cooperate second bimetallic strip and fuse-link to use.

The second bimetallic strip 6 is in a disc shape and comprises a passive dome 61 in the center, the passive dome 61 is movably pressed on the second insulating part 8, a circular arc surface 62 which is deformed by heating extends from the periphery of the passive dome 61, and when the circular arc surface 62 senses that the temperature of the heating element exceeds a preset temperature value, the circular arc surface 62 is turned over along a seam between the circular arc surface 62 and the passive dome 61, so that the circular arc surface 62 drives the passive dome 61 to move downwards to press against the second insulating part 8; this bimetallic strip is after the installation, and the deformation range of being heated is accurate, can improve the success rate of preventing dry combustion method.

In addition, the temperature controller can also be characterized in that the first bimetallic strip 5 corresponds to the live wire conductive circuit 4, a first insulating part 7 is arranged between the first bimetallic strip 5 and the live wire conductive circuit 4, the second bimetallic strip 6 corresponds to the zero line conductive circuit 3, and a second insulating part 8 is movably arranged between the second bimetallic strip 6 and the zero line conductive circuit 3.

The fusing linkage assembly 9 comprises a swinging arm 91 arranged on the coupling seat 1 and a rotating shaft seat 92 rotatably connected with the middle part of the swinging arm 91;

a power-off spring 93 which is in press fit with the connecting bracket 2 is arranged on the top surface of one end 91-1 of the swing arm 91, and two power-off voltage connecting parts 94 extend from the bottom surface corresponding to the zero line conductive circuit 3 and the fire line conductive circuit 4;

a fuse 10 extending vertically is mounted on the top surface of the other end 91-2 of the swing arm 91.

When the coupler is assembled to the heating element, the fuse link 10 is pressed by the heating element, so that the other end of the swing arm 91 swings downwards, one end of the swing arm 91 moves upwards and compresses the power-off spring 93, at the moment, the two-break voltage connection part 94 leaves the zero line conductive circuit 3 and the fire wire conductive circuit 4, but when the temperature of the heating element exceeds the heat-resistant temperature set by the fuse link 10, the fuse link 10 can be dissolved, the other end of the swing arm 91 loses support, under the tension of the power-off spring 93, one end of the swing arm 91 can swing downwards quickly, the two-break voltage connection part 94 is pushed to press the zero line conductive circuit 3 and the fire wire conductive circuit 4, the zero line conductive circuit 3 and the fire wire conductive circuit 4 are disconnected, and the power of the whole.

The zero line conductive circuit 3 comprises a zero line movable contact piece 31 and a zero line fixed contact piece 32, a first movable contact 311 is installed at the movable end of the zero line movable contact piece 31, a first fixed contact 321 is installed on the zero line fixed contact piece 32, and the first movable contact 311 is elastically contacted with the first fixed contact 321 through the fact that the zero line movable contact piece 31 is movably pressed by a first insulating piece 7 to realize disconnection or connection of the zero line conductive circuit 3;

the live wire conducting circuit 4 comprises a live wire moving contact piece 41 and a live wire fixed contact piece 42, a second moving contact 411 is mounted at the movable end of the live wire moving contact piece 41, a second fixed contact 421 is mounted on the live wire fixed contact piece 42, and the second moving contact 411 is movably pressed by the second insulating piece 8 through the live wire moving contact piece 41 to elastically contact the second fixed contact 421 to realize disconnection or connection of the live wire conducting circuit 4; simple structure, low use cost and low mechanical failure rate.

The bottom of coupling seat 1 has been seted up grafting chamber 101, installs live wire conductive ring 11, zero line conductive ring 12 and bottom wire center post 13 in the grafting chamber 101, and live wire conductive ring 11 is connected with the stiff end of live wire movable contact spring 41, and zero line conductive ring 12 is connected with the stiff end of zero line movable contact spring 31, and this structure belongs to prior art, does not explain here again.

The first bimetallic strip 5 and the second bimetallic strip 6 are arranged on the connecting support 2 in a left-right mode, the connecting support 2 between the first bimetallic strip 5 and the second bimetallic strip 6 is provided with a through hole 201, the fuse-link 10 extends out of the upper portion of the connecting support 2 through the through hole 201, the fuse-link 10 can penetrate through the connecting support 2 to be contacted with a heating body through the through hole 201, in addition, the heating body can be pressed to abut against the fuse-link 10 to move downwards during installation, the guiding effect can be achieved, and the probability of breaking the fuse-link 10 is reduced.

The connecting bracket 2 is provided with an opening 202, and the second bimetallic strip 6 is arranged below the opening 202 or in the opening 202; when the second bimetal sheet 6 is installed in the opening 202, the second bimetal sheet 6 can be pressed against and contacted with the heating element, the temperature of the heating element can be directly sensed, and when the second bimetal sheet 6 is installed below the opening 202, heat is radiated to the second bimetal sheet 6 through the opening 202, in addition, the second bimetal sheet 6 can also be installed below the connecting bracket 2 and contacted with the connecting bracket 2 without the opening 202, the connecting bracket 2 is contacted with the heating element, and the heat is transferred to the second bimetal sheet 6 through the connecting bracket 2 made of metal.

The first insulating part 7 and the second insulating part 8 are both vertically arranged columnar bodies, and two guide supports 14 which respectively guide the first insulating part 7 and the second insulating part 8 are arranged on the coupling seat 1; the first insulating part 7 and the second insulating part 8 can stably slide up and down through the guide bracket 14, and the situation that the dry burning prevention action fails due to the inclined displacement of the insulating parts is reduced.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a multiple coupler of preventing dry combustion method protection, includes close or counterbalance coupling seat (1) of installing on the heat-generating body to and install linking bridge (2) in coupling seat (1) top, coupling seat (1) is provided with zero line conducting wire (3) and live wire conducting wire (4), its characterized in that: the heating element is characterized in that a first bimetal sheet (5) and a second bimetal sheet (6) are mounted on the connecting support (2), the first bimetal sheet (5) and the second bimetal sheet (6) are arranged close to or close to the heating element, a first insulating part (7) is movably arranged between the first bimetal sheet (5) and the zero line conducting circuit (3), a second insulating part (8) is movably arranged between the second bimetal sheet (6) and the fire line conducting circuit (4), and when the first bimetal sheet (5) or/and the second bimetal sheet (6) sense that the temperature of the heating element exceeds a preset temperature, the first insulating part (7) or/and the second insulating part (8) are correspondingly pushed to disconnect the zero line conducting circuit (3) and the fire line conducting circuit (4);

install fusing linkage subassembly (9) on coupling seat (1), fusing linkage subassembly (9) elastic pressure supports on zero line conducting wire (3) and live wire conducting wire (4), be connected with fuse (10) that extend linking bridge (2) top on fusing linkage subassembly (9), fuse (10) are pressed and are supported on the heat-generating body, when fuse (10) sense the heat-generating body temperature and surpass the temperature default, fuse (10) are dissolved to high temperature, trigger fusing linkage subassembly (9) and break off zero line conducting wire (3) and live wire conducting wire (4) simultaneously.

2. The multiple anti-dry heating protected coupler of claim 1, wherein: first bimetallic strip (5) are circular slice and inside has seted up an eccentric circular or class circular through-hole (51), be equipped with tongue piece (52) that stretch to through-hole (51) on first bimetallic strip (5), the extending direction of tongue piece (52) is unanimous with through-hole (51) eccentric direction, locating hole (53) that are used for being connected with linking bridge (2) are seted up to the extension tip of tongue piece (52), first bimetallic strip (5) set up temperature sensing zone (54) close or counterbalance with the heat-generating body with the one end that tongue piece (52) root is connected, the one end of the relative tongue piece (52) point portion of first bimetallic strip (5) sets up jump wing (55) that the activity was pressed to first insulating part (7).

3. The multiple anti-dry heating protected coupler of claim 1, wherein: the two sheetmetals of second (6) are the disc shape, including passive dome (61) of central point position, passive dome (61) activity crimping second insulating part (8), the periphery of passive dome (61) extends has circular arc face (62) of being heated deformation, when heating element temperature surpassed the temperature default when circular arc face (62) sense, turn over along the seam between circular arc face (62) and passive dome (61), make circular arc face (62) drive passive dome (61) move down the pressure and support second insulating part (8).

4. The multiple anti-dry heating protected coupler of claim 1, wherein: the fusing linkage assembly (9) comprises a swing arm (91) arranged on the coupling seat (1) and a rotating shaft seat (92) rotatably connected with the middle part of the swing arm (91);

a power-off spring (93) which is in press fit with the connecting support (2) is arranged on the top surface of one end (91-1) of the swing arm (91), and two power-off voltage connection parts (94) extend on the bottom surface corresponding to the zero line conductive circuit (3) and the fire line conductive circuit (4);

a vertically extending fuse (10) is mounted on the top surface of the other end (91-2) of the swing arm (91).

5. The multiple anti-dry heating protected coupler of claim 1, wherein: the zero line conducting circuit (3) comprises a zero line movable contact piece (31) and a zero line fixed contact piece (32), a first movable contact (311) is installed at the movable end of the zero line movable contact piece (31), a first fixed contact (321) is installed on the zero line fixed contact piece (32), and the first movable contact (311) is movably pressed by a first insulating piece (7) through the zero line movable contact piece (31) to elastically contact the first fixed contact (321) to disconnect or connect the zero line conducting circuit (3);

the live wire conducting circuit (4) comprises a live wire movable contact piece (41) and a live wire fixed contact piece (42), a second movable contact (411) is installed at the movable end of the live wire movable contact piece (41), a second fixed contact (421) is installed on the live wire fixed contact piece (42), and the second movable contact (411) is movably pressed by a second insulating piece (8) through the live wire movable contact piece (41) to elastically contact the second fixed contact (421) to disconnect or connect the live wire conducting circuit (4).

6. The multiple anti-dry heating protected coupler of claim 5, wherein: the bottom of the coupling seat (1) is provided with a plug-in cavity (101), a live wire conductive ring (11), a zero line conductive ring (12) and a bottom wire center post (13) are installed in the plug-in cavity (101), the live wire conductive ring (11) is connected with the fixed end of the live wire movable contact piece (41), and the zero line conductive ring (12) is connected with the fixed end of the zero line movable contact piece (31).

7. The multiple anti-dry heating protected coupler of claim 1, wherein: the fuse wire is characterized in that the first bimetallic strip (5) and the second bimetallic strip (6) are arranged on the connecting support (2) in a left-right mode, a through hole (201) is formed in the connecting support (2) between the first bimetallic strip (5) and the second bimetallic strip (6), and the fuse wire (10) extends out of the upper portion of the connecting support (2) through the through hole (201).

8. The multiple anti-dry heating protected coupler of claim 1, wherein: an opening (202) is formed in the connecting support (2), and the second bimetallic strip (6) is installed below the opening (202) or in the opening (202).

9. The multiple anti-dry heating protected coupler of claim 1, wherein: the first insulating part (7) and the second insulating part (8) are vertically arranged columnar bodies, and two guide supports (14) which respectively play a role in guiding the first insulating part (7) and the second insulating part (8) are arranged on the coupling seat (1).