A heating disc fixing structure of an electric kettle

Abstract

The utility model relates to a kind of heating disc fixing structure of electric kettle, including glass kettle body, bottom shell and heating disc, the heating disc is located below glass kettle body, the glass kettle body bottom is equipped with the annular groove of inward recess, annular groove is sleeved with fastening ring, the bottom shell is placed in glass kettle body bottom, and is fastened with fastening ring, the bottom shell is also equipped with support component, the support component is connected with fastening ring or bottom shell, the support component is supported in the circumferential edge area of heating disc disc body, and exerts from bottom to top force, so that the heating disc is close to the outer bottom surface of glass kettle body;The heating disc on this electric kettle is supported by support component and exerts a force to adhere to the outer bottom surface of glass kettle body, simple structure, high assembly efficiency, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of electric kettles, specifically a heating plate fixing structure for an electric kettle. Background Technology

[0002] Currently, to improve food safety, electric kettles are made entirely of glass. A heating element on the bottom of the glass kettle heats the water inside. Existing heating element installation structures are illustrated in Chinese patent document (application number 202420545518.2), which discloses a container, an aluminum heating element plate, and hardware. The bottom of the container has a connecting part, forming a filling space between the connecting part and the side wall of the hardware. This filling space is filled with a liquid colloid. This prior art uses the liquid colloid to bond the hardware to the container, thus supporting the aluminum heating element plate. However, the bonding stability of the liquid colloid is insufficient, easily leading to insufficient contact between the aluminum heating element plate and the bottom of the container, affecting heat transfer efficiency. Therefore, further improvements are needed to the connection structure of the heating element plate used in all-glass kettles. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned existing problems and provide a simple and reasonable heating plate fixing structure for an electric kettle.

[0004] A heating plate fixing structure for an electric kettle includes a glass kettle body, a bottom shell, and a heating plate. The heating plate is located below the glass kettle body. The bottom of the glass kettle body has an inwardly concave annular groove, and a fastening ring is fitted inside the annular groove. The bottom shell is placed at the bottom of the glass kettle body and is fastened to the fastening ring. A support member is also provided inside the bottom shell. The support member is connected to the fastening ring or the bottom shell. The support member circumferentially supports the circumferential edge area of ​​the heating plate and applies an upward force to make the heating plate close to the outer bottom surface of the glass kettle body.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the support component includes a metal support ring, which has several second connecting holes circumferentially. The fastening ring has several first connecting holes corresponding to the second connecting holes. The circumferential edge area of ​​the heating plate abuts against the top of the metal support ring. When the fastening unit passes through the second connecting holes and the first connecting holes for fastening, the metal support ring generates an upward force.

[0006] As a further embodiment, the heating plate is an aluminum heat-conducting plate, the heating tube is horseshoe-shaped and brazed to the bottom surface of the aluminum heat-conducting plate, and the entire top surface of the aluminum heat-conducting plate is flat and attached to the outer bottom surface of the glass pot.

[0007] As a further embodiment, the fastening ring is provided with several downwardly extending first connecting protrusions in the circumferential direction, and the first connecting hole is opened on the first connecting protrusion. The fastening unit is a fastening screw, which passes through the second connecting hole and the first connecting hole from bottom to top.

[0008] As a further embodiment, a heat insulation structure is provided between the first connecting protrusion and the metal support ring; the heat insulation structure includes a silicone sleeve, which is elastically fitted onto the bottom of the first connecting protrusion.

[0009] As a further embodiment, the heating plate has two or more evenly distributed positioning notches along its edge, and the metal support ring has upwardly bent positioning flanges corresponding to the positioning notches. Through the cooperation of the positioning flanges and the positioning notches, the heating plate is coaxially held against the top of the metal support ring.

[0010] As a further solution, the heating plate is provided with a first anti-mistake mark and the metal support ring is provided with a second anti-mistake mark. When the heating plate is held against the metal support ring, the second anti-mistake mark and the first anti-mistake mark are set in correspondence with each other.

[0011] As a further embodiment, the inner edge of the metal support ring is provided with a reinforcing flange that bends downward.

[0012] As a further embodiment, the fastening ring is provided with several downwardly extending second connecting protrusions in the circumferential direction, and the bottom shell is provided with a third connecting hole corresponding to the second connecting protrusions. The fastening unit passes through the third connecting hole and the second connecting protrusions to make the bottom shell fastened to the fastening ring.

[0013] As a further embodiment, the support member includes several springs evenly distributed along the periphery of the plate. The bottom shell is provided with a positioning component that is fixedly engaged with the lower end of the spring. The upper end of the spring abuts against the plate of the heating plate and forms an upward force by maintaining a compressed state.

[0014] As a further embodiment, the positioning component includes a mounting sleeve integral with the bottom surface of the bottom shell and a positioning block tightly fitted inside the mounting sleeve, wherein the lower end of the spring is fastened to the positioning block by an interference fit.

[0015] As a further embodiment, an upper coupler is fastened to the bottom surface of the heating plate, and a temperature control component for sensing the temperature of the plate is provided on the upper coupler. The bottom shell is provided with a clearance through hole corresponding to the upper coupler, and the bottom shell is fastened to the upper coupler.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a heating plate fixing structure for an electric kettle. The heating plate of this electric kettle is fastened to the outer bottom surface of the glass kettle body by means of a metal support ring and a fastening ring, or by means of several springs elastically supporting the bottom surface. The structure is simple, the assembly efficiency is high, and the production cost is reduced. A metal support ring or several springs form a circumferential support for the heating plate, which allows the top surface of the heating plate to be evenly and tightly attached to the bottom of the glass pot, reducing the gap between the bottom of the glass pot and the heating plate, and improving the heat transfer efficiency between the two. The metal support ring is fastened with screws and a fastening ring, which ensures the connection stability of the metal support ring and makes it less susceptible to the influence of ambient temperature during use. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the first embodiment of the present invention.

[0018] Figure 2 This is an exploded structural diagram of the glass kettle body, heating plate, and metal support ring in this utility model.

[0019] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is an exploded view of the heating element and metal support ring in this utility model.

[0021] Figure 5 This is an exploded structural diagram of the heating plate, upper coupler, and bottom shell in this utility model.

[0022] Figure 6 This is a schematic diagram of the bottom structure of the electric kettle in this utility model.

[0023] Figure 7 This is a schematic diagram of the fastening ring structure in this utility model.

[0024] Figure 8 This is a cross-sectional structural diagram of the second embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the spring and positioning block structure in this utility model.

[0026] Figure 10 This is an exploded structural diagram of the second embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] First embodiment: See Figures 1 to 7As shown, a heating plate 3 fixing structure for an electric kettle includes a glass kettle body 1, a bottom shell 2, and a heating plate 3. The heating plate 3 is located below the glass kettle body 1. The bottom of the glass kettle body 1 has an inwardly recessed annular groove 101, and a fastening ring 4 is fitted inside the annular groove 101. The bottom shell 2 is placed at the bottom of the glass kettle body 1 and is fastened to the fastening ring 4. A support member is also provided inside the bottom shell 2. The support member is connected to the fastening ring 4 or the bottom shell 2. The support member is circumferentially supported on the circumferential edge area of ​​the heating plate 3 and applies an upward force to make the heating plate 3 close to the outer bottom surface of the glass kettle body 1.

[0029] Specifically, the supporting component includes a metal support ring 5, which has several second connecting holes 501 circumferentially. The fastening ring 4 has several downwardly extending first connecting protrusions 41 corresponding to the second connecting holes 501 circumferentially. The first connecting protrusions 41 have first connecting holes 411. The circumferential edge area of ​​the heating plate 3 abuts against the top of the metal support ring 5. The hollow part of the metal support ring 55 is used for the heating tube 32 in the heating plate 3 to protrude downward. When the fastening unit passes through the second connecting holes 501 and the first connecting holes 411 for fastening, the metal support ring 5 generates an upward force.

[0030] The heating plate 3 on this electric kettle is connected to the fastening ring 4 by a metal support ring 5 to fit tightly against the bottom surface of the heating plate 3. The structure is simple, the assembly efficiency is high, and the production cost is reduced. The metal support ring 5 forms a circumferential support for the heating plate 3, which allows the top surface of the heating plate 3 to fit evenly against the bottom of the glass kettle, reducing the gap between the bottom of the glass kettle and the heating plate 3, and making the heat transfer efficiency between the two better. In addition, the metal support ring 5 is fastened to the fastening ring 4 with fastening screws, which can ensure the connection stability of the metal support ring 5 and make it less susceptible to the influence of the surrounding temperature during use. A heat insulation structure is provided between the first connecting protrusion 41 and the metal support ring 5. During use, the heat of the heating plate 3 will be directly transferred to the metal support ring 5, causing the temperature of the metal support ring 5 to be close to that of the heating plate 3. Therefore, the heat insulation structure is used to isolate the contact surface between the first connecting protrusion 41 and the metal support ring 5 to prevent the plastic first connecting protrusion 41 from melting due to high temperature.

[0031] In this embodiment, the heat insulation structure includes a silicone sleeve 6, which is elastically fitted onto the bottom of the first connecting protrusion 41. The elastic silicone sleeve 6 can be quickly installed onto the first connecting protrusion 41, improving assembly efficiency. Moreover, the through hole structure on the silicone sleeve 6 corresponding to the first connecting hole 411 can be integrally made or formed by self-tapping when fastening screws are inserted.

[0032] The heating plate 3 has two or more evenly distributed positioning notches 302 along its edge. The metal support ring 5 has an upwardly bent positioning flange 502 corresponding to the positioning notches 302. Through the cooperation of the positioning flange 502 and the positioning notches 302, the heating plate 3 is coaxially held against the top of the metal support ring 5. In this embodiment, there are two positioning notches 302 and two positioning folds 502. The two positioning notches 302 are opened on the same line of symmetry. When the metal support ring 5 is held against the bottom of the plate, the positioning fold 502 is placed in the positioning notch 302, which enables the metal support ring 5 and the heating plate 3 to form a positioning fit. In addition to ensuring coaxial setting, it can also restrict the circumferential rotation of the heating plate 3.

[0033] The heating plate 3 is provided with a first anti-mistake mark on its plate body. In this embodiment, the first anti-mistake mark is an arc-shaped notch 303 opened on the edge of the plate body. The metal support ring 5 is provided with a second anti-mistake mark. In this embodiment, the second anti-mistake mark is a round hole 503 on the metal support ring 5. When the heating plate 3 is held against the metal support ring 5, the second anti-mistake mark and the first anti-mistake mark are set to correspond to each other. Since there are two of the aforementioned positioning notch 302 and positioning fold 502, two mating positions are formed between the metal support ring 5 and the heating plate 3. When the metal support ring 5 is assembled with the heating plate 3, the worker can visually check whether the first and second anti-mistake marks are mating to ensure that the metal support ring 5 is installed in the specified installation direction.

[0034] The inner edge of the metal support ring 5 is provided with a downwardly bent reinforcing flange 504; the metal support ring 5 can be integrally stamped from a metal sheet. By adding the reinforcing flange 504, the metal support ring 5 will not bend, twist or deform during installation and under stress.

[0035] Based on the first embodiment, the fastening ring 4 is provided with several downwardly extending second connecting protrusions 42 in the circumferential direction. The second connecting protrusions 42 also have connecting holes. The metal support ring 5 is provided with a clearance opening 505 corresponding to the second connecting protrusions 42. The second connecting protrusions 42 are separated from the metal support ring 5 through the clearance opening 505. The second connecting protrusions 42 are also made of plastic, so they are separated from the metal support ring 5 to prevent the heat of the metal support ring 5 from being transferred to the second connecting protrusions 42. During installation, the bottom shell 2 has a third connecting hole 201 corresponding to the second connecting protrusion 42. By passing the fastening screw through the third connecting hole 201 and the second connecting protrusion 42, the bottom shell 2 is fastened to the fastening ring 4. The second connecting protrusion 42 is a strip-shaped hole, which allows the bottom shell 2 to have circumferential adjustment space when it is fastened, reducing assembly difficulty and improving assembly efficiency.

[0036] The heating plate 3 has an aluminum heat-conducting plate 31 as its body. The heating tube 32 is horseshoe-shaped and brazed to the bottom surface of the aluminum heat-conducting plate 31. The entire top surface of the aluminum heat-conducting plate 31 is flat and is attached to the outer bottom surface of the glass pot body 1. The heating plate 3 is made of a single layer of high thermal conductivity metal plate, which can reduce the cost of raw materials and eliminate the brazing process required for a double-layer structure of the heating plate 3. When the heating plate 3 is installed on the glass pot body 1, a heat-conducting medium is used to fill the gap between the aluminum heat-conducting plate 31 and the bottom surface of the pot body, eliminating the need for grinding the top surface of the heating plate 3 and the bottom surface of the glass pot body 1, thus greatly reducing processing costs.

[0037] The bottom surface of the heating plate 3 is fastened to an upper coupler 7. The upper coupler 7 is equipped with a temperature control component for sensing the temperature of the plate. The bottom shell 2 is provided with an avoidance through hole 202 corresponding to the upper coupler 7, and the bottom shell 2 is fastened to the upper coupler 7.

[0038] The temperature control component mainly includes an anti-dry-burning switch composed of a moving contact and a fixed contact, an insulating rod abutting against the moving contact, and a bimetallic strip placed on the upper side of the insulating rod. This temperature control component is existing technology and will not be described in detail here. The upper coupler 7 has several fourth connection holes 701, and the bottom surface of the aluminum heat conduction plate 31 is welded with several third connection protrusions 33. By fastening screws passing through the fourth connection holes 701 and the third connection protrusions 33 from bottom to top, the upper coupler 7 is assembled and connected to the bottom surface of the aluminum heat conduction plate 31.

[0039] The fastening ring 4 includes a ring body 43, which has a break 431. Both ends of the ring body 43 are provided with connecting parts 432 corresponding to the break 431. The connecting parts 432 are provided with external connecting holes 433. A connecting block 44 is provided at the break 431. The two sides of the connecting block 44 are provided with internal connecting holes 441 corresponding to the external connecting holes 433. By passing two fastening units (screws or bolts) through the external connecting holes 433 and the internal connecting holes 441 respectively, the ring body 43 is tightened and fixed in the annular groove 101. During assembly, the two fastening units are loosened so that the ring body 43 fits into the annular groove 101. Then, the connecting block 44 is placed at the break 431 and its inner connecting hole 441 aligns with the outer connecting holes 433 on both sides. Finally, the fastening unit is screwed in, so that the ring body 43 gradually narrows until it is tightly clamped in the annular groove 101, thus completing the assembly. The connecting block 44 can be a silicone block, which plays a buffering role during the fastening process to prevent the ring body 43 from being over-tightened and causing damage to the glass pot body 1.

[0040] Second embodiment: The second embodiment differs from the first embodiment in that: see... Figures 8 to 10As shown, the supporting component includes several springs 8 evenly distributed along the periphery of the plate. The bottom shell 2 is provided with a positioning component that is fixedly engaged with the lower end of the spring 8. The upper end of the spring 8 abuts against the plate of the heating plate 3 and forms an upward force by maintaining a compressed state. The spring 8 can further enhance the pressing effect of the aluminum heat-conducting plate 31, minimizing gaps while avoiding the glass pot 1 being cracked or shattered due to the use of a rigid pressing method.

[0041] The positioning component includes a mounting sleeve 10 integral with the inner bottom surface of the bottom shell 2 and a positioning block 9 tightly fitted inside the mounting sleeve 10. The lower end of the spring 8 is fastened to the positioning block 9 by an interference fit.

[0042] The main body of the positioning block 9 is provided with several longitudinal first interference ribs 901 in the circumferential direction. The first interference ribs 901 enable the positioning block 9 to form an interference fit with the mounting sleeve 10. The top surface of the main body is also provided with a positioning protrusion 91. The positioning protrusion 91 is provided with several longitudinal second interference ribs 902 in the circumferential direction. The second interference ribs 902 enable one end of the spring 8 to be interference-fitted onto the positioning protrusion 91.

[0043] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A heating plate fixing structure for an electric kettle, comprising a glass kettle body, a bottom shell, and a heating plate, wherein the heating plate is disposed below the glass kettle body, the bottom of the glass kettle body has an inwardly concave annular groove, a fastening ring is fitted inside the annular groove, and the bottom shell is placed at the bottom of the glass kettle body and is fastened to the fastening ring, characterized in that: The bottom shell is also provided with a support member, which is connected to the fastening ring or the bottom shell. The support member is circumferentially supported on the circumferential edge area of ​​the heating plate and applies an upward force to make the heating plate close to the outer bottom surface of the glass pot.

2. The heating plate fixing structure of an electric kettle according to claim 1, characterized in that: The supporting component includes a metal support ring, which has several second connecting holes circumferentially. The fastening ring has several first connecting holes corresponding to the second connecting holes. The circumferential edge area of ​​the heating plate abuts against the top of the metal support ring. When the fastening unit passes through the second connecting holes and the first connecting holes for fastening, the metal support ring generates an upward force.

3. The heating plate fixing structure of an electric kettle according to claim 1, characterized in that: The heating plate is made of aluminum heat-conducting plate. The heating tube of the heating plate is horseshoe-shaped and brazed to the bottom surface of the aluminum heat-conducting plate. The entire top surface of the aluminum heat-conducting plate is flat and is attached to the outer bottom surface of the glass pot.

4. The heating plate fixing structure of an electric kettle according to claim 2, characterized in that: The fastening ring has several downwardly extending first connecting protrusions on its circumferential side, and first connecting holes are opened on the first connecting protrusions. The fastening unit is a fastening screw, which passes through the second connecting hole and the first connecting hole from bottom to top.

5. The heating plate fixing structure of an electric kettle according to claim 4, characterized in that: A heat insulation structure is provided between the first connecting protrusion and the metal support ring; the heat insulation structure includes a silicone sleeve, which is elastically fitted onto the bottom of the first connecting protrusion.

6. The heating plate fixing structure of an electric kettle according to claim 2, characterized in that: The heating plate has two or more evenly distributed positioning notches along its edge. The metal support ring has upwardly bent positioning flanges corresponding to the positioning notches. The positioning flanges cooperate with the positioning notches to make the heating plate coaxially abut against the top of the metal support ring.

7. The heating plate fixing structure of an electric kettle according to claim 6, characterized in that: The heating plate has a first anti-mistake mark on its body, and the metal support ring has a second anti-mistake mark. When the heating plate is held against the metal support ring, the second anti-mistake mark and the first anti-mistake mark are set in correspondence with each other.

8. The heating plate fixing structure of an electric kettle according to claim 2, characterized in that: The inner edge of the metal support ring is provided with a downwardly bent reinforcing flange.

9. The heating plate fixing structure of an electric kettle according to claim 1, characterized in that: The fastening ring has several downward-extending second connecting protrusions on its circumference. The bottom shell has a third connecting hole corresponding to the second connecting protrusions. The fastening unit passes through the third connecting hole and the second connecting protrusions to fasten the bottom shell to the fastening ring.

10. The heating plate fixing structure of an electric kettle according to claim 1, characterized in that: The supporting component includes several springs evenly distributed along the periphery of the plate. The bottom shell is provided with a positioning component that is fixedly engaged with the lower end of the spring. The upper end of the spring abuts against the plate of the heating plate and forms an upward force by maintaining a compressed state.

11. The heating plate fixing structure of an electric kettle according to claim 10, characterized in that: The positioning component includes a mounting sleeve integral with the bottom surface of the bottom shell and a positioning block tightly fitted inside the mounting sleeve. The lower end of the spring is fastened to the positioning block by an interference fit.

12. The heating plate fixing structure of an electric kettle according to claim 1, characterized in that: The bottom surface of the heating plate is fastened with an upper coupler, which is equipped with a temperature control component for sensing the temperature of the plate. The bottom shell has a clearance through hole corresponding to the upper coupler, and the bottom shell is fastened to the upper coupler.

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