Liquid heater connected with power line through temperature controller

Abstract

The utility model relates to a liquid heater connected with a power line through a temperature controller. The liquid heater comprises a kettle body and a base, and the temperature controller which acts on a heating body and is in conductive connection with the power line is arranged on the base. The temperature controller comprises an electric on-off mechanism with an initial state and an off state, and at least part of the electric on-off mechanism is elastically and movably arranged on the temperature controller; when the temperature of the heating body reaches the disconnection set temperature of the temperature controller, the electric on-off mechanism is switched from the initial state to the disconnection state; the heating body is cooled, and the electrical on-off mechanism is elastically reset; when the kettle body and the base form an inseparable whole, the temperature controller is provided with an electricity inlet terminal and a power line connecting terminal of the electric kettle, so that the heating body is electrified to heat and boil water, and the temperature controller also plays a role in safety protection.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid heating, in particular to a liquid heater connected to a power line by a temperature controller. Background Art

[0002] Chinese patent No. ZL 202322564246.9 discloses a heating structure, a heating kettle and a liquid heating device, wherein the heating structure includes a heat transfer plate, an electric heating pipe and a temperature control component, the heat transfer plate has a first side and a second side opposite to each other, the electric heating pipe is arranged on the second side of the heat transfer plate, the electric heating pipe is arranged in a ring shape and is larger than a circumference, so that the two ends of the electric heating pipe are at least partially overlapped in the circumferential direction thereof, the temperature control component includes a first coupler and a temperature control unit installed on the first coupler, the temperature control unit and the electric heating pipe are electrically connected to the first coupler respectively, and the first coupler is installed on the second side of the heat transfer plate and is located on the inner side of the electric heating pipe.

[0003] The temperature control unit of the utility model is installed on a coupler, the coupler is connected to an external power line, and the temperature control unit is electrically connected to the first coupler. The temperature control unit needs to be fixed on the coupler in the form of hot glue or buckle. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid heater that relies on a thermostat to connect to a power line. The thermostat is directly connected to the power line, and the structure in which the thermostat is arranged on a coupler can be eliminated. The thermostat no longer needs to be arranged on the coupler, and the setting of the coupler is eliminated, thereby reducing product costs.

[0005] The purpose of the utility model is achieved in this way:

[0006] A liquid heater connected to a power line by a thermostat, comprising a kettle body and a base, wherein the base is provided with a thermostat acting on a heating element and forming a conductive connection with the power line;

[0007] The thermostat includes an electrical on-off mechanism having an initial state and an off state, and at least a part of the electrical on-off mechanism is elastically movable and arranged on the thermostat;

[0008] When the temperature of the heating element reaches the disconnection setting temperature of the thermostat, the electrical on-off mechanism switches from the initial state to the disconnection state; when the temperature of the heating element drops, the electrical on-off mechanism performs elastic reset;

[0009] The pot body and the base form an inseparable whole.

[0010] When the kettle body and the base form an inseparable whole, the thermostat is provided with the power input terminal and the power cord connection terminal of the electric kettle. When the kettle body is heated, the thermostat will play a role of power conduction, so that the heating element is powered on to heat and boil water, and the thermostat will also play a role of safety protection.

[0011] When the temperature of the heating element reaches the disconnection setting temperature of the thermostat, the thermostat is disconnected, the water boiling work is completed, the heating element cools down, and the thermostat returns to the initial state, and the next water boiling work can be carried out.

[0012] The thermostat includes a detection mechanism that deforms according to the temperature of the heating element; when the temperature of the heating element reaches the disconnection setting temperature of the thermostat, the detection mechanism deforms and triggers the electrical on-off mechanism to disconnect; when the heating element cools down, the detection mechanism deforms and resets, and the electrical on-off mechanism resets elastically accordingly.

[0013] The temperature controller comprises a bracket and a base. The electrical on-off mechanism is limitedly installed between the bracket and the base. The bracket is provided with a detection mechanism acting on the heating element.

[0014] The electrical on-off mechanism includes a stationary contact assembly, a moving contact assembly, and a contact rod. The stationary contact assembly is electrically connected to the power line through a wire.

[0015] The electrical on-off mechanism is in the initial state, and the stationary contact piece assembly forms conductive contact with the moving contact piece assembly;

[0016] The detection mechanism deforms as the temperature of the heating element rises and acts on the contact rod, and the contact rod drives the moving contact assembly to separate from the static contact assembly, and the electrical on-off mechanism is in an off state.

[0017] The electrical on-off mechanism includes a stationary contact assembly, which includes an L-pole conductive sheet and an N-pole conductive sheet. The base is provided with a first positioning and matching portion for positioning and assembling the L-pole conductive sheet, and the base is provided with a second positioning and matching portion for positioning and assembling the N-pole conductive sheet.

[0018] The electrical on-off mechanism includes a moving contact piece assembly, which includes a first moving contact piece arranged above and below the L-pole conductive piece, and a second moving contact piece arranged above and below the N-pole conductive piece, and each moving contact piece is provided with a contact piece rod for axial movement;

[0019] When the detection mechanism deforms as the temperature of the heating element rises and drives the two contact rods to move axially and correspondingly drives the first moving contact piece to separate from the L-pole conductive piece and the second moving contact piece to separate from the N-pole conductive piece, the electrical switching mechanism is in the disconnected state; when the heating element cools down, the detection mechanism deforms and resets, the first moving contact piece and the second moving contact piece reset respectively, and the electrical switching mechanism resets to the initial state.

[0020] When the temperature of the heating element is too high, the detection mechanism is deformed and drives the moving contact assembly to move away from the static contact assembly through the contact rod, so that the thermostat is disconnected. The structure is simple and plays a safety protection role.

[0021] A support block is arranged between the bracket and the base, and a guide groove portion for limiting the contact piece rod is arranged on the support block. When the contact piece rod moves axially, the contact piece rod moves on the guide groove portion.

[0022] The detection mechanism includes a first memory metal detection piece and a second memory metal detection piece. The first memory metal detection piece and the first moving contact piece are arranged correspondingly up and down, and the second memory metal detection piece and the second moving contact piece are arranged correspondingly up and down, and a contact rod is provided between each memory metal detection piece and the corresponding moving contact piece; a first mounting portion is provided on the bracket corresponding to the first memory metal detection piece, and the first memory metal detection piece is positioned and installed on the bracket through the first mounting portion, and a second mounting portion is provided on the bracket corresponding to the second memory metal detection piece, and the second memory metal detection piece is positioned and installed on the bracket through the second mounting portion.

[0023] The first memory metal detection sheet and the second memory metal detection sheet are generally bimetallic sheets, which press two metals together. Commonly used metals include copper, iron, nickel, platinum and other metals. They are mainly used in fluorescent lamp ignition, mechanical temperature controllers, and temperature control switches of ordinary rice cookers.

[0024] One end of the moving contact piece assembly is positioned between the bracket and the base, and the other end of the moving contact piece assembly is elastically floatingly arranged between the bracket and the base. When the electrical on-off mechanism is reset from the disconnected state to the initial state, the moving contact piece assembly is elastically reset.

[0025] The beneficial effects of the utility model are as follows:

[0026] The thermostat is directly connected to the power cord, and the structure in which the thermostat is set on the coupler can be eliminated. The thermostat no longer needs to be set on the coupler, thereby reducing product costs, simplifying the internal electrical component structure of the heating base, saving installation space and increasing the internal heat dissipation space of the electrical components of the heating base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of a liquid heater according to an embodiment of the utility model.

[0028] Figure 2 This is a schematic diagram of the internal structure of a liquid heater base according to an embodiment of the utility model.

[0029] Figure 3 It is a three-dimensional structural schematic diagram of a temperature controller according to an embodiment of the present utility model.

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of a temperature controller in another aspect of an embodiment of the present invention.

[0031] Figure 5 This is a schematic structural diagram of a heating element and a base separated from each other in one embodiment of the utility model.

[0032] Figure 6 This is a schematic diagram of the assembly and decomposition structure of a temperature controller according to an embodiment of the present utility model.

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of a base according to an embodiment of the utility model. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] See also Figure 1-Figure 7 , a liquid heater connected to a power line by a thermostat, comprising a kettle body 1, a base 3, a thermostat 4 acting on a heating element 2 and forming a conductive connection with a power line 5 is provided on the base 3;

[0036] The thermostat 4 includes an electrical on-off mechanism 6 having an initial state and an off state, and at least a part of the electrical on-off mechanism 6 is elastically movable and disposed on the thermostat 4;

[0037] When the temperature of the heating element 2 reaches the disconnection setting temperature of the thermostat 4, the electrical on-off mechanism 6 switches from the initial state to the disconnection state; when the temperature of the heating element 2 drops, the electrical on-off mechanism 6 performs elastic reset;

[0038] The kettle body 1 and the base 3 form an inseparable whole.

[0039] The thermostat 4 includes a detection mechanism 7 that deforms according to the temperature of the heating element 2; when the temperature of the heating element 2 reaches the disconnection setting temperature of the thermostat 4, the detection mechanism 7 deforms and triggers the electrical on-off mechanism 6 to disconnect; when the heating element 2 cools down, the detection mechanism 7 deforms and resets, and the electrical on-off mechanism 6 resets elastically accordingly.

[0040] The temperature controller 4 includes a bracket 8 and a base 9 . The electrical on-off mechanism 6 is limitedly installed between the bracket 8 and the base 9 . The bracket 8 is provided with a detection mechanism 7 acting on the heating element 2 .

[0041] The electrical on-off mechanism 6 includes a stationary contact assembly 10, a movable contact assembly 11, and a contact rod 12. The stationary contact assembly 10 is electrically connected to the power line 5 through a wire.

[0042] The electrical on-off mechanism 6 is in an initial state, and the stationary contact piece assembly 10 and the moving contact piece assembly 11 form a conductive contact;

[0043] The detection mechanism 7 deforms as the temperature of the heating element 2 rises and acts on the contact piece rod 12. The contact piece rod 12 drives the movable contact piece assembly 11 to separate from the stationary contact piece assembly 10, and the electrical switching mechanism 6 is in the disconnected state.

[0044] The electrical switching mechanism 6 includes a stationary contact assembly 10, which includes an L-pole conductive sheet 13 and an N-pole conductive sheet 14; the base 9 is provided with a first positioning matching portion 15 for positioning and assembling the L-pole conductive sheet 13, and the base 9 is provided with a second positioning matching portion 16 for positioning and assembling the N-pole conductive sheet 14.

[0045] The electrical on-off mechanism 6 includes a movable contact piece assembly 11, which includes a first movable contact piece 19 arranged above and below the L-pole conductive piece 13, and a second movable contact piece 20 arranged above and below the N-pole conductive piece 14, and each movable contact piece is provided with a contact piece rod 12 for axial movement;

[0046] When the detection mechanism 7 deforms with the temperature rise of the heating element 2 and drives the two contact rods 12 to make axial movement and correspondingly drives the first movable contact piece 19 to separate from the L-pole conductive piece 13 and the second movable contact piece 20 to separate from the N-pole conductive piece 14, the electrical switching mechanism 6 is in the disconnected state; when the heating element 2 cools down, the detection mechanism 7 deforms and resets, the first movable contact piece 19 and the second movable contact piece 20 are reset respectively, and the electrical switching mechanism 6 is reset to the initial state.

[0047] In this embodiment, the L-pole conductive sheet 13 and the N-pole conductive sheet 14 are in a bent structure, and both the first positioning matching portion 15 and the second positioning matching portion 16 are provided with stoppers to facilitate positioning of the conductive sheets.

[0048] In addition, a positioning column can be further provided on one side of the first positioning matching part 15 and the second positioning matching part 16, and the L-pole conductive sheet 13 and the N-pole conductive sheet 14 are respectively provided with positioning holes corresponding to the positioning columns. The conductive sheet is positioned on the positioning slot of the positioning matching part, and the positioning column is limited in the positioning hole, so that the conductive sheet is positioned on the positioning matching part of the base 9.

[0049] A support block 22 is provided between the bracket 8 and the base 9 . A guide groove 23 for limiting the contact rod 12 is provided on the support block 22 . When the contact rod 12 moves axially, the contact rod 12 is limited to move on the guide groove 23 .

[0050] In this embodiment, the support block 22 is an open fork-shaped structure, and the support block 22 includes two support arms arranged at intervals, one end of one support arm is pressed on the first moving contact piece 19, and the other end of the other support arm is suspended on the first moving contact piece 19, that is, the bottom of the support arm is a step-shaped structure, one end of the other support arm is pressed on the second moving contact piece 20, and the other end of the other support arm is suspended on the second moving contact piece 20.

[0051] In this embodiment, a limit support groove 28 is provided on the base 9 corresponding to each moving contact piece and supporting arm; one end of the moving contact piece and the supporting arm is limited on the limit support groove 28, and a limit column is provided on the limit support groove 28. One end of the moving contact piece and the supporting arm is provided with a limit hole. When the moving contact piece and the supporting arm are on the limit support groove 28, the limit column is relatively inserted into the limit hole. In this way, when the bracket 8 and the base 9 are assembled, the moving contact piece and the supporting arm are limited up and down between the bracket 8 and the base 9.

[0052] The detection mechanism 7 includes a first memory metal detection piece 24 and a second memory metal detection piece 25. The first memory metal detection piece 24 and the first moving contact piece 19 are arranged in correspondence with each other up and down, and the second memory metal detection piece 25 and the second moving contact piece 20 are arranged in correspondence with each other up and down, and a contact rod 12 is provided between each memory metal detection piece and the corresponding moving contact piece; a first mounting portion 26 is provided on the bracket 8 corresponding to the first memory metal detection piece 24, and the first memory metal detection piece 24 is positioned and installed on the bracket 8 through the first mounting portion 26, and a second mounting portion 27 is provided on the bracket 8 corresponding to the second memory metal detection piece 25, and the second memory metal detection piece 25 is positioned and installed on the bracket 8 through the second mounting portion 27.

[0053] One end of the moving contact piece assembly 11 is positioned between the bracket 8 and the base 9, and the other end of the moving contact piece assembly 11 is elastically floatingly arranged between the bracket 8 and the base 9. When the electrical on-off mechanism 6 is reset from the disconnected state to the initial state, the moving contact piece assembly 11 is elastically reset.

[0054] In this embodiment, a plug-in piece is provided on the bracket 8 by bending, and a plug-in groove is provided on the base 9 corresponding to the plug-in piece. When the bracket 8 and the base 9 are assembled, the plug-in piece is inserted into the plug-in groove.

[0055] 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. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid heater connected to a power cord by a thermostat, comprising a kettle body (1) and a base (3), characterized in that: A temperature controller (4) is provided on the base (3) and acts on the heating element (2) and forms an electrically conductive connection with the power line (5); The temperature controller (4) comprises an electrical on-off mechanism (6) having an initial state and an off state, and at least a part of the electrical on-off mechanism (6) is elastically movably arranged on the temperature controller (4); When the temperature of the heating element (2) reaches the disconnection setting temperature of the thermostat (4), the electrical on-off mechanism (6) switches from the initial state to the disconnection state; when the temperature of the heating element (2) drops, the electrical on-off mechanism (6) performs elastic reset.

2. The liquid heater according to claim 1, which is connected to a power line by a thermostat, is characterized in that: The temperature controller (4) comprises a detection mechanism (7) that deforms in response to the temperature of the heating element (2); when the temperature of the heating element (2) reaches a disconnection setting temperature of the temperature controller (4), the detection mechanism (7) deforms and triggers the electrical on-off mechanism (6) to disconnect; when the temperature of the heating element (2) drops, the detection mechanism (7) deforms and resets, and the electrical on-off mechanism (6) resets elastically accordingly.

3. The liquid heater according to claim 1, which is connected to a power line by a thermostat, is characterized in that: The temperature controller (4) comprises a bracket (8) and a base (9); the electrical on-off mechanism (6) is limitedly installed between the bracket (8) and the base (9); and the bracket (8) is provided with a detection mechanism (7) acting on the heating element (2).

4. The liquid heater connected to the power line by a thermostat according to claim 3, characterized in that: The electrical on-off mechanism (6) comprises a stationary contact assembly (10), a movable contact assembly (11), and a contact rod (12); the stationary contact assembly (10) is electrically connected to the power line (5) via a conductor; The electrical on-off mechanism (6) is in an initial state, and the stationary contact piece assembly (10) and the movable contact piece assembly (11) form conductive contact; The detection mechanism (7) deforms as the temperature of the heating element (2) rises and acts on the contact piece rod (12), and the contact piece rod (12) drives the moving contact piece assembly (11) to separate from the stationary contact piece assembly (10), and the electrical on-off mechanism (6) is in an off state.

5. The liquid heater connected to the power line by a thermostat according to claim 3, characterized in that: The electrical on-off mechanism (6) comprises a stationary contact piece assembly (10), and the stationary contact piece assembly (10) comprises an L-pole conductive piece (13) and an N-pole conductive piece (14); the base (9) is provided with a first positioning matching portion (15) for positioning and assembling the L-pole conductive piece (13), and the base (9) is provided with a second positioning matching portion (16) for positioning and assembling the N-pole conductive piece (14).

6. The liquid heater connected to the power line by a thermostat according to claim 5, characterized in that: The electrical on-off mechanism (6) comprises a movable contact piece assembly (11), the movable contact piece assembly (11) comprising a first movable contact piece (19) arranged above and below the L-pole conductive piece (13), and a second movable contact piece (20) arranged above and below the N-pole conductive piece (14), each movable contact piece being provided with a contact piece rod (12) capable of axial movement; When the detection mechanism (7) deforms with the temperature rise of the heating element (2) and drives the two contact rods (12) to move axially and correspondingly drives the first movable contact piece (19) to separate from the L-pole conductive piece (13) and the second movable contact piece (20) to separate from the N-pole conductive piece (14), the electrical on-off mechanism (6) is in an off state; when the temperature of the heating element (2) drops, the detection mechanism (7) deforms and resets, the first movable contact piece (19) and the second movable contact piece (20) are reset respectively, and the electrical on-off mechanism (6) is reset to an initial state.

7. The liquid heater connected to the power line by a thermostat according to claim 6, characterized in that: A support block (22) is provided between the bracket (8) and the base (9), and a guide groove portion (23) for limiting the contact piece rod (12) is provided on the support block (22). When the contact piece rod (12) moves axially, the contact piece rod (12) is limited to move on the guide groove portion (23).

8. The liquid heater connected to the power line by a thermostat according to claim 6, characterized in that: The detection mechanism (7) comprises a first memory metal detection piece (24) and a second memory metal detection piece (25); the first memory metal detection piece (24) and the first movable contact piece (19) are arranged in correspondence with each other in the upper and lower parts; the second memory metal detection piece (25) and the second movable contact piece (20) are arranged in correspondence with each other in the upper and lower parts; and a contact piece rod (12) is arranged between each memory metal detection piece and the corresponding movable contact piece; a first mounting portion (26) is arranged on the bracket (8) corresponding to the first memory metal detection piece (24); the first memory metal detection piece (24) is positioned and mounted on the bracket (8) through the first mounting portion (26); a second mounting portion (27) is arranged on the bracket (8) corresponding to the second memory metal detection piece (25); the second memory metal detection piece (25) is positioned and mounted on the bracket (8) through the second mounting portion (27).

9. The liquid heater connected to the power line by a thermostat according to claim 3, characterized in that: One end of the movable contact piece assembly (11) is positioned between the bracket (8) and the base (9), and the other end of the movable contact piece assembly (11) is elastically floatingly arranged between the bracket (8) and the base (9). When the electrical on-off mechanism (6) is reset from the disconnected state to the initial state, the movable contact piece assembly (11) is elastically reset.

10. The liquid heater connected to the power line by a thermostat according to claim 1, characterized in that: The kettle body (1) and the base (3) form an inseparable whole.

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