Heating disc control assembly and electric kettle

Abstract

The invention discloses a heating plate control assembly and an electric kettle, and relates to the field of daily electric appliances. The heating disc control assembly comprises a mounting disc, an adjusting disc and a temperature control component. The temperature control component is composed of a sleeve, a first connecting terminal, a second connecting terminal and a compression spring, the lower end of the sleeve is provided with a first adjusting thread, the adjusting disc controls the sleeve to move up and down, the outer side wall of the sleeve is further provided with a guide groove, and the compression spring is arranged between the first connecting terminal and the second connecting terminal. The first connecting terminal is composed of a first push head, a first insulating rod and a first terminal, the second connecting terminal is composed of a second push head, a second insulating rod and a second terminal, and the sleeve is driven to move up and down by rotating the adjusting disc, so that the position state of the connecting terminals is changed, and the heating temperature threshold value is adjusted. Different temperatures are selected according to actual needs.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and particularly to a heating plate control component and an electric kettle. Background Art

[0002] With the development of intelligent home appliance technology, temperature-controlled kettles are widely used in modern families and office environments because they can achieve precise water temperature control and insulation functions. Compared with traditional electric kettles that only have the function of "stopping when boiling", temperature-controlled kettles realize real-time monitoring and adjustment of the water temperature through an internal temperature sensor, a microprocessor control system, and a heating module, meeting usage scenarios with specific water temperature requirements such as making milk powder, coffee, and tea.

[0003] Once the temperature sensor fails, it will cause the entire temperature control system to be unable to accurately obtain water temperature data. Most temperature-controlled kettles are not designed to consider the detachable and replaceable nature of the sensor in their structure, further increasing the difficulty and cost of later maintenance. Summary of the Invention

[0004] In order to solve the defects existing in the above-mentioned prior art, the present invention proposes a heating plate control component and an electric kettle.

[0005] The technical solution of the present invention is realized as follows:

[0006] A heating plate control component, characterized in that it includes a mounting plate, an adjusting plate, and a temperature control component. A bimetal is connected through the mounting plate.

[0007] Among them, the temperature control component is composed of a sleeve, a first connection terminal, a second connection terminal, and a compression spring. A first adjustment thread is provided at the lower end of the sleeve, and the adjusting plate controls the up and down movement of the sleeve.

[0008] A guiding groove is further provided on the outer side wall of the sleeve. The compression spring is arranged between the first connection terminal and the second connection terminal. The first connection terminal is composed of a first push head, a first insulating rod, and a first terminal. The second connection terminal is composed of a second push head, a second insulating rod, and a second terminal.

[0009] A biting arm is provided below the first terminal, a biting groove is provided on the inner side of the biting arm, guiding rods are provided on both sides of the second terminal, a limiting arm is provided at the upper end of the second terminal, and the guiding rods are installed in the guiding groove so that the second terminal can slide in the guiding groove.

[0010] Preferably, the mounting plate includes a clamping boss, the inner diameter of the clamping boss is provided with a thread, and a clamping groove is provided on one side of the clamping boss.

[0011] The mounting plate further comprises a heat-conducting surface, arc-shaped mounting grooves are provided on both sides of the heat-conducting surface, and the bimetallic strip penetrates and connects the two arc-shaped mounting grooves.

[0012] Preferably, when the guide rod slides in the guide groove, the guide groove causes the second terminal to deflect.

[0013] Preferably, the guide groove consists of segments F1, F2 and F3, and the second terminal is deflected when passing through segment F2.

[0014] Preferably, after power is turned on, the guide rod is at a set maximum temperature at the upper end of the F3 section, and is at a set minimum temperature at the lower end of the F3 section.

[0015] An electric kettle, characterized in that it also includes a base unit and a kettle unit.

[0016] The base unit is composed of a chassis, a fixing plate and an upper coupler. The kettle unit includes a kettle bottom, a steel ring and a kettle. The kettle bottom is connected to the steel ring through a buckle, and the steel ring is also connected to the kettle through a buckle. A lower coupler that matches the upper coupler is provided in the middle of the kettle bottom.

[0017] The kettle consists of a kettle body, a handle, a spout and a kettle lid, and a heating plate is provided at the bottom of the kettle body A.

[0018] Preferably, a switch component is provided at the upper end of the handle, and the switch component is used to control the power supply of the heating plate. The switch component includes a first button, which is rotatably connected to the handle, and a toggle portion is provided at one end of the first button.

[0019] Preferably, a through slot is provided on the toggle portion, a shaft rod is provided at one end of the lower pressure arm, and a clamping rod is provided at the other end, wherein the shaft rod is located inside the through slot, and a limiting metal sheet is provided on one side of the clamping rod.

[0020] Preferably, a lid opening component is further provided on the top of the handle, and the lid opening component is used to control the opening and closing of the pot lid.

[0021] The cover opening component includes a second button, a wedge block is fixedly connected below the second button, the second button and the wedge block move up and down along the handle, and a first return spring is provided at the bottom of the wedge block.

[0022] Preferably, the wedge block fits with one end of the pull rod. When the wedge block moves downward, it can drive the pull rod to move to the right. The other end of the pull rod is fixedly connected to the locking rod. A second return spring is provided on the locking rod. One end of the locking rod is connected to the latch rod.

[0023] The heating plate control assembly and electric kettle of the present invention have the following beneficial effects:

[0024] The temperature control component of the present invention is composed of a sleeve, a first connection terminal, a second connection terminal, a compression spring, etc. The overall structure is compact and it is convenient to be integrated inside the heating plate control assembly. A sliding fit and elastic connection method is adopted between the components, which is easy to assemble, and the later maintenance and replacement are more efficient.

[0025] By rotating the adjustment disk to drive the sleeve to move up and down, the position state of the connection terminal is changed, so as to realize the adjustment of the heating temperature threshold. Users can select different temperatures according to actual needs (such as heat preservation mode, slow cooking mode, etc.), which expands the functional application range of the electric kettle, and is especially suitable for scenarios with specific temperature requirements such as making tea and brewing coffee.

[0026] The temperature control component adopts a push head - terminal - spring linkage structure. After pressing the switch, the limit metal sheet pushes the second push head to make the second connection terminal slide along the guide groove, and the compression spring keeps the circuit in a conducting state after being compressed; when the temperature rises and triggers power off, the bimetallic strip drives the first connection terminal to move down, and the limit arm is separated from the engaging groove, and the circuit is instantly disconnected. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the electric kettle of the present invention;

[0028] Figure 2 It is a schematic internal structure diagram of the electric kettle of the present invention;

[0029] Figure 3 is Figure 2 An enlarged structural diagram of part A in [figure number], mainly showing the switch component;

[0030] Figure 4 It is a partial structural diagram of the electric kettle of the present invention;

[0031] Figure 5 is Figure 4 An enlarged structural diagram of part B in [figure number], mainly showing the lid opening component;

[0032] Figure 6 is Figure 4 An enlarged structural diagram of part C in [figure number], mainly showing the lid opening component;

[0033] Figure 7 It is a schematic structural diagram of the heating plate control assembly of the present invention;

[0034] Figure 8 It is a schematic internal structure diagram of the heating plate control assembly of the present invention;

[0035] Figure 9 It is a cross-sectional view of the mounting plate of the present invention;

[0036] Figure 10Structural schematic diagram of the adjustment disk of the present invention;

[0037] Figure 11 Structural schematic diagram of the temperature control component of the present invention;

[0038] Figure 12 Schematic diagram of a state of the temperature control component of the present invention;

[0039] Figure 13 Another state schematic diagram of the temperature control component of the present invention;

[0040] Figure 14 Partial structural schematic diagram of the temperature control component of the present invention.

[0041] Reference numerals are represented as: electric kettle 100, base unit 10, chassis 101, fixing piece 102, upper coupler 103, kettle unit 20, kettle bottom 201, steel ring 202, heating plate 203, kettle 204, kettle body 204A, handle 204B, spout 204C, kettle lid 204D, switch component 205, first button 205A, toggle part 205B, pressing arm 205C, through groove 205D, shaft rod 205E, clamping rod 205F, limiting metal sheet 205G, kettle lid opening component 206, second button 206A, wedge block 206B, first return spring 206C, pushing pull rod 206D, engaging rod 206E, second return spring 206F, plug pin rod 206G

[0042] Heating plate control assembly 200, mounting plate 31, engaging boss 31A, thread 31B, engaging groove 31C, arc-shaped mounting groove 31D, heat-conducting veneer 31E, curved hollow 31F, upper housing 32, diversion groove 33, lower housing 34, adjustment disk 35, adjustment ring 351, second adjustment thread 352, clamping block 353, temperature control component 36, sleeve 36, first constraint groove 361A, first adjustment thread 361B, constraint rod 361C, guiding groove 361D, first connection terminal 362, first push head 362A, first insulating rod 362B, first terminal 362C, second constraint groove 362D, biting arm 362E, biting groove 362F, second connection terminal 363, second push head 363A, second insulating rod 363B, second terminal 363C, guiding rod 363D, limiting arm 363E, compression spring 364. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0044] Embodiment 1

[0045] Refer to Figures 1 to 6As shown, this embodiment discloses an electric kettle 100 comprising a base unit 10 and a kettle unit 20. The base unit 10 and the kettle unit 20 are designed as separate units. When the kettle unit 20 is placed on the base unit 10, the base unit 10 is responsible for powering the kettle. The base unit 10 is connected to a power source via an external power cord, serving as an AC power input port.

[0046] The base unit 10 consists of a chassis 101, a fixing plate 102, and an upper coupler 103. The upper coupler 103 is mounted on the fixing plate 102, and the fixing plate 102 is bolted to the chassis 101. If the upper coupler 103 is damaged, it can be disassembled and replaced as a whole.

[0047] Refer again Figure 1 As shown, the kettle unit 20 comprises a kettle bottom 201, a steel ring 202 and a kettle 204. The kettle bottom 20 is connected to the steel ring 202 by a buckle, and the steel ring 202 is also connected to the kettle 204 by a buckle. The middle part of the kettle bottom 201 is provided with a lower coupler that matches with the upper coupler 103, and the connection of the coupler realizes that the base unit 10 is powered by the kettle unit 20. Wherein, the kettle 204 is composed of a kettle body 204A, a handle 204B, a spout 204C and a kettle lid 204D. A heating plate 203 is provided at the bottom of the kettle body 204A. After power is turned on, the resistance coil in the heating plate 203 generates heat and is transferred to the inner part of the kettle body 204A through the bottom of the kettle body 204A, thereby boiling the water.

[0048] Reference Figures 2 to 3 As shown, a switch component 205 is provided at the upper end of the handle 204B. The switch component 205 is used to control the power supply to the heating plate 203. The switch component 205 includes a first button 205A, which is rotatably connected to the handle 204B. A toggle portion 205B is provided at one end of the first button 205A. The toggle portion 205B is used to control the opening and closing of the lower pressure arm 205C, thereby controlling whether the heating plate 203 is powered.

[0049] Specifically, the toggle portion 205B is provided with a through slot 205D, one end of the lower pressing arm 205C is provided with a shaft 205E, and the other end is provided with a clamping rod 205F. The shaft 205E is located inside the through slot 205C, and one side of the clamping rod 205F is provided with a limiting metal sheet 205G.

[0050] When the user turns on the power supply and presses the switch, the current passes through the base unit 10 to energize, causing the heating plate 203 to start heating. As the water temperature gradually rises, the thermal motion of water molecules in the kettle intensifies, and finally reaches the boiling state and generates a large amount of steam. These steams will flow towards the handle direction through the spout or the diversion channel under the kettle lid, and finally act on the bimetallic strip hidden in the kettle body or the handle. The bimetallic strip is laminated by two metal layers with different coefficients of thermal expansion. It remains flat at room temperature, but when high-temperature steam contacts its surface, the two layers of metal bend due to uneven heating. This deformation will trigger the limit metal sheet 205G to drive the first button 205A to return to its original position through the pressing arm 205C, instantly disconnect the circuit contact, and cut off the power supply to the electric heating tube, thus realizing automatic power-off.

[0051] To ensure safety, an overheat protection device is also provided, usually a fuse or a second group of bimetallic strips. If the user operates incorrectly, for example, starts heating when there is no water in the kettle, when the temperature exceeds the set safety threshold, usually 105°C - 120°C, this device will directly fuse the circuit or force the power contact to bounce open, avoiding the risk of fire caused by dry burning. It should be noted that after the mechanical thermostat cuts off the power, it takes about 1 - 2 minutes for the bimetallic strip to cool and reset before the heating can be started again.

[0052] Preferably, as shown in Figures 4 to 6 shown, an open-lid component 206 is also provided at the top of the handle 204B. The open-lid component 206 is used to control the opening and closing of the kettle lid 204D. The open-lid component 206 includes a second button 206A, and a wedge block 206B is fixedly connected below the second button 206A. The second button 206A and the wedge block 206B can move up and down along the handle 204B, and a first return spring 206C is provided at the bottom of the wedge block 206B.

[0053] Among them, the wedge block 206B fits with one end of the pull rod 206D. When the wedge block 206B moves downward, it can drive the pull rod 206D to move to the right (as shown by the arrow direction in Figure 5 )). The other end of the pull rod 206D is fixedly connected to a clamping rod 206E. A second return spring 206F is provided on the clamping rod 206E, and one end of the clamping rod 206E is connected to a pin rod 206G.

[0054] A torsion spring is provided between the kettle lid 204D and the handle 204B. When the kettle lid 204D is in the closed state, the pin rod 206G cooperates with the kettle lid 204D and restricts it from resetting under the action of the torsion spring; when the second button 206A is pressed, the wedge block 206B pushes the pull rod 206D, the clamping rod 206E and the pin rod 206G to move to the right, forcing the pin rod 206G to separate from the kettle lid 204D. At this time, the kettle lid is bounced open and reset under the action of the torsion spring.

[0055] Furthermore, the circuit will be immediately disconnected after the water boils, so the water cannot boil for a long time when making tea, and the heating temperature cannot be adjusted each time.

[0056] Embodiment 2

[0057] In this embodiment, an electric kettle 100 is disclosed, which includes a base unit 10 and a kettle unit 20. Referring again to Figure 1 of Figure 6 shown, the kettle unit 20 includes a kettle bottom 201, a steel ring 202 and a kettle 204. The kettle bottom 20 is connected to the steel ring 202 by a buckle, and the steel ring 202 is also connected to the kettle 204 by a buckle. A lower coupler that matches the upper coupler 103 is provided in the middle of the kettle bottom 201, and the power supply of the base unit 10 to the kettle unit 20 is realized through the connection of the couplers. Among them, the kettle 204 is composed of a kettle body 204A, a handle 204B, a spout 204C and a kettle lid 204D. A heating plate 203 is provided at the bottom of the kettle body 204A. After the power is turned on, the resistance coil in the heating plate 203 generates heat and transfers it to the water inside the kettle body 204A through the bottom of the kettle body 204A, thereby boiling the water.

[0058] Referring to Figures 2 to 3 shown, a switch component 205 is provided at the upper end of the handle 204B, and the switch component 205 is used to control the power-on of the heating plate 203. The switch component 205 includes a first button 205A, the first button 205A is rotatably connected to the handle 204B, and a toggle part 205B is provided at one end of the first button 205A. The toggle part 205B is used to control the opening and closing of the pressing arm 205C, so as to realize the control of whether the heating plate 203 is powered on.

[0059] Specifically, a through groove 205D is provided on the toggle part 205B, a shaft rod 205E is provided at one end of the pressing arm 205C, and a clamping rod 205F is provided at the other end. Among them, the shaft rod 205E is located inside the through groove 205C, and a limiting metal sheet 205G is provided on one side of the clamping rod 205F.

[0060] Referring to Figures 7 to 14As shown in the figure, this embodiment also proposes a heating plate control assembly 200, which includes a mounting plate 31, an upper housing 32, a flow guide groove 33, a lower housing 34, and an adjustment plate 35 that are connected in sequence. The heating plate control assembly 200 is mounted on the bottom of the kettle body 204A through the mounting plate 31, and the heating plate control assembly 200 is located in the middle of the heating plate 203. Among them, the mounting plate 31 includes a clamping boss 31A. The inner diameter of the clamping boss 31A is provided with a thread 31B, and a clamping groove 31C is provided on one side of the clamping boss 31A. Quick disassembly is realized by the thread 31B and the clamping groove 31B. The mounting plate 31 also includes a heat-conducting veneer 31E, and arc-shaped mounting grooves 31D are provided on both sides of the heat-conducting veneer 31E. The bimetal sheet penetrates and connects the two arc-shaped mounting grooves 31D, and the mounting plate 31 is also provided with a curved hollow 31F. The bimetal sheet can be bent in the curved hollow 31F.

[0061] Preferably, the flow guide groove 33 is fitted and installed inside the upper housing 32 for quickly cooling and resetting the bimetal sheet.

[0062] In this embodiment, referring again to Figures 11 to 14 As shown in the figure, a temperature control component 36 is also provided in the middle of the flow guide groove 33. The temperature control component 36 is electrically connected to the heating plate 203 and controls its power-on. Referring to Figure 12 As shown in the figure, the temperature control component 36 is in an initial state and the circuit is not conducting; referring to Figure 13 As shown in the figure, the temperature control component 36 is in a closed state and the circuit is conducting.

[0063] The temperature control component 36 is composed of a sleeve 361, a first connection terminal 362, a second connection terminal 363, and a compression spring 364. The outer side wall of the sleeve 361 is provided with a first constraint groove 361A, and the inner side wall is provided with a constraint rod 361C. The lower end of the sleeve 361 is provided with a first adjustment thread 361B. Among them, the first constraint groove 361A cooperates with the middle of the flow guide groove 33 and can move up and down in the flow guide groove 33. The outer side wall of the sleeve 361 is also provided with a guide groove 361D.

[0064] Referring again to Figure 1 and Figure 10 As shown in the figure, the adjustment plate 35 is rotatably connected to the bottom of the lower housing 34. The middle of the adjustment plate 35 is provided with a second adjustment thread 352, and the first adjustment thread 361B cooperates with the second adjustment thread 352. Rotating the adjustment plate 35 can move the sleeve 361 up and down. Among them, a plurality of clamping blocks 353 are also provided on the circumference of the adjustment plate 35, and the adjustment plate 351 is connected through the clamping blocks 353. The adjustment ring 351 is rotatably connected to the outer circumference of the bottom of the kettle body 204A.

[0065] The compression spring 364 is arranged between the first connection terminal 362 and the second connection terminal 363. The first connection terminal 362 is composed of a first push head 362A, a first insulating rod 362B, and a first terminal 362C. The second connection terminal 363 is composed of a second push head 363A, a second insulating rod 363B, and a second terminal 363C.

[0066] Wherein, on the outer side of the first terminal 362C, there is a second constraint groove 362D, and the second constraint groove 362D cooperates with the constraint rod 361C, so that the first connection terminal 362 can slide on the sleeve 361. Below the first terminal 362C, there is a biting arm 362E, and on the inner side of the biting arm 362E, there is a biting groove 362F.

[0067] On both sides of the second terminal 363C, there are guide rods 363D, and at the upper end of the second terminal 363C, there is a limit arm 363E. The guide rods 363D are installed in the guide grooves 361D, so that the second terminal 363C can slide in the guide grooves 361D. During the sliding process, the guide grooves 361D can cause the second terminal 363C to deflect.

[0068] Referring to Figure 3 and Figure 4 As shown, the limit metal sheet 205G penetrates through the handle 204B until it is connected to the bottom of the kettle body 204A. Among them, when the switch component 205 is pressed, the limit metal sheet 205G contacts the second push head 363A and jacks up the second connection terminal 363. The second connection terminal 363 slides from section F1 to section F3 along the guide groove 361D, and the compression spring 364 is squeezed. At this time, the circuit is turned on. Since the limit arm 363E and the biting groove 362F are engaged with each other, the compression spring 364 cannot be reset.

[0069] When the water temperature starts to rise, the bimetal sheet arranged on the mounting plate 31 bends and drives the first connection terminal 362 and the second connection terminal 363 to move downward. The second connection terminal 363 slides from section F3 to section F1 along the guide groove 361D and deflects. At this time, the limit arm 363E and the biting groove 362F are separated under the action of the compression spring 364, and the circuit is disconnected.

[0070] Furthermore, after being powered on, the sleeve 361 is driven to move up and down by the adjusting disc 35, so as to adjust the set temperature. Among them, the uppermost end of the guide rod 363D in section F3 is the set maximum temperature, and the lowermost end of the guide rod 363D in section F3 is the set minimum temperature. When setting the maximum temperature, the bimetal sheet needs to be bent and deformed more; when setting the minimum temperature, the bimetal sheet needs to be bent and deformed less.

[0071] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heating plate control component, characterized in that, It includes a mounting plate, an adjusting plate and a temperature control component. The mounting plate is connected through a bimetallic strip. The temperature control component is composed of a sleeve, a first connecting terminal, a second connecting terminal and a compression spring. The lower end of the sleeve is provided with a first adjusting thread, and the adjusting disk controls the up and down movement of the sleeve. The outer wall of the sleeve is also provided with a guide groove, and the compression spring is provided between the first connecting terminal and the second connecting terminal. The first connecting terminal is composed of a first push head, a first insulating rod and a first terminal, and the second connecting terminal is composed of a second push head, a second insulating rod and a second terminal. A bite arm is provided below the first terminal, a bite groove is provided on the inner side of the bite arm, guide rods are provided on both sides of the second terminal, and a limit arm is provided on the upper end of the second terminal. The guide rod is installed in the guide groove so that the second terminal can slide in the guide groove.

2. The heating plate control component according to claim 1, wherein The mounting plate includes a snap-fit boss, the inner diameter of which is provided with a thread, and one side of which is provided with a snap-fit groove. The mounting plate further comprises a heat-conducting surface, arc-shaped mounting grooves are provided on both sides of the heat-conducting surface, and the bimetallic strip penetrates and connects the two arc-shaped mounting grooves.

3. The heating plate control component according to claim 1, characterized in that When the guide rod slides in the guide groove, the guide groove causes the second terminal to deflect.

4. The heating plate control assembly according to claim 3, characterized in that, The guide groove is composed of segments F1, F2 and F3. When passing through segment F2, the second terminal is deflected.

5. The heating plate control assembly according to claim 4, characterized in that, After power is turned on, the guide rod is at the set maximum temperature at the upper end of the F3 section, and at the set minimum temperature at the lower end of the F3 section.

6. An electric kettle, comprising the heating plate control assembly described in claim 1, characterized in that, Also includes a base unit and a kettle unit. The base unit is composed of a chassis, a fixing plate and an upper coupler. The kettle unit includes a kettle bottom, a steel ring and a kettle. The kettle bottom is connected to the steel ring through a buckle, and the steel ring is also connected to the kettle through a buckle. A lower coupler that matches the upper coupler is provided in the middle of the kettle bottom. The kettle consists of a kettle body, a handle, a spout and a kettle lid, and a heating plate is provided at the bottom of the kettle body A.

7. The electric kettle according to claim 6, wherein The upper end of the handle is provided with a switch component, which is used to control the power supply of the heating plate. The switch component includes a first button, which is rotatably connected to the handle, and one end of the first button is provided with a toggle portion.

8. The electric kettle according to claim 7, wherein, The toggle portion is provided with a through slot, one end of the lower pressure arm is provided with a shaft rod, and the other end is provided with a clamping rod, wherein the shaft rod is located inside the through slot, and a limiting metal sheet is provided on one side of the clamping rod.

9. The electric kettle according to claim 6, characterized in that, The top of the handle is also provided with a lid opening component, which is used to control the opening and closing of the pot lid. The cover opening component includes a second button, a wedge block is fixedly connected below the second button, the second button and the wedge block move up and down along the handle, and a first return spring is provided at the bottom of the wedge block.

10. The electric kettle according to claim 9, wherein, The wedge block fits with one end of the pull rod. When the wedge block moves downward, it can drive the pull rod to move to the right. The other end of the pull rod is fixedly connected to the locking rod. A second return spring is provided on the locking rod. One end of the locking rod is connected to the latch rod.

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