A sensor mounting structure for an electric kettle

Abstract

The utility model relates to an inductor mounting structure of electric kettle, including glass kettle body, bottom shell and heating disc, the heating disc is placed in the outer bottom surface of glass kettle body, the bottom shell is connected in the glass kettle body bottom, and will surround heating disc in it, the glass kettle body bottom is equipped with the annular groove that recesses inwards, and the annular groove is sleeved with fastening ring, and temperature inductor or / and water level inductor are assembled and connected on the fastening ring, and the sensing plane of temperature inductor or / and water level inductor is close to any groove wall of the annular groove, this kind of electric kettle sets up temperature inductor or / and water level inductor on the fastening ring, and can complete inductor mounting operation through the assembly of fastening ring, simple structure makes temperature inductor or / and water level inductor can be close to the surface of glass kettle body, and temperature or water level detection precision is high.

Description

Technical Field

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

[0002] Currently, to improve food safety standards, electric kettles are made entirely of glass. A heating element on the bottom of the glass kettle heats the water inside. An example of this heating element installation structure is shown in Chinese Patent Document No. 201920503024.7, which discloses an electromagnetic heating kettle with a water level sensing device and an infrared temperature distribution structure. This document describes an electromagnetic heating base and a glass kettle body. The bottom of the glass kettle body has an electromagnetic heating layer that works in conjunction with the electromagnetic heating base. A side resting piece is provided on the electromagnetic heating base. The existing technology utilizes an external side panel to install the water level sensor and infrared temperature measuring device to detect the water temperature and level in the glass kettle. However, the water level sensor and infrared temperature measuring device are always exposed outside the glass kettle, and the protruding side panel affects the overall appearance of the kettle, increases the difficulty of mold development, and the complex installation structure of the water level sensor and infrared temperature measuring device leads to reduced production efficiency and increased production costs. Therefore, further improvements are needed to the connection structure of the sensor used in the all-glass kettle. Utility Model Content

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

[0004] A sensor mounting structure for an electric kettle includes a glass kettle body, a bottom shell, and a heating plate. The heating plate is placed on the outer bottom surface of the glass kettle body. The bottom shell is connected to the bottom of the glass kettle body and surrounds the heating plate therein. The bottom of the glass kettle body has an inwardly concave annular groove. A fastening ring is fitted inside the annular groove. A temperature sensor and / or a water level sensor are mounted and connected on the fastening ring. The sensing plane of the temperature sensor and / or the water level sensor is in close contact with any wall of the annular groove.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the fastening ring has one or two mounting cavities, which are open upwards. The temperature sensor or water level sensor is installed inside the mounting cavity, and the sensing plane of the temperature sensor or water level sensor is in close contact with the upper wall of the annular groove.

[0006] As a further embodiment, a metal support ring is provided on the lower side of the fastening ring. The hollow part of the metal support ring is used for the heating tube in the heating plate to protrude downwards. The edge of the heating plate abuts against the top of the metal support ring. After the metal support ring is tightly connected to the fastening ring, it supports the heating plate to be close to the outer bottom surface of the glass pot.

[0007] As a further embodiment, the metal support ring has a wire passage opening at the position corresponding to the temperature sensor and / or water level sensor, and the two pins of the temperature sensor and / or water level sensor pass through the wire passage opening and are led to the lower side of the metal support ring.

[0008] As a further embodiment, the heating plate has two or more evenly distributed positioning notches along its edge. The metal support ring has an upwardly bent positioning flange corresponding to the positioning notch, which forms a wire threading opening after bending. Through the cooperation of the positioning flange and the positioning notch, the heating plate is coaxially held against the top of the metal support ring.

[0009] As a further embodiment, the fastening ring is provided with several downwardly extending first connecting protrusions in the circumferential direction, and the first connecting protrusions are provided with first connecting holes. The metal support ring is provided with second connecting holes corresponding to the first connecting holes. The fastening unit passes through the second connecting holes and the first connecting holes to securely connect the metal support ring to the fastening ring.

[0010] 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.

[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 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.

[0013] As a further embodiment, an upper coupler is securely connected to the bottom surface of the heating plate. The upper coupler is electrically connected to the heating plate, a temperature sensor, and / or a water level sensor. The upper coupler is equipped with a temperature control component for sensing the temperature of the heating plate. The beneficial effects of this utility model are as follows: This utility model discloses a sensor installation structure for an electric kettle. This electric kettle arranges the temperature sensor and / or water level sensor on a fastening ring. After the fastening ring is assembled onto the glass kettle body, the installation of various sensors can be completed. The structure is simple, the production efficiency is high, and the temperature sensor and / or water level sensor can be closely attached to the surface of the glass kettle body, resulting in high accuracy in temperature or water level detection.

[0014] Secondly, the temperature sensor and / or water level sensor are arranged on the fastening ring, so that there is no need to open a clearance opening on the heating plate to avoid the sensing head of the temperature sensor and / or water level sensor, so that the heating plate can remain intact and improve the heat transfer efficiency of the heating plate to the glass pot.

[0015] Furthermore, by installing a base shell at the bottom of the glass kettle, the temperature sensor and / or water level sensor can be hidden inside, making the electric kettle more compact, simple, and beautiful in appearance. It is no longer necessary to add a side support to the kettle base to accommodate the temperature sensor and / or water level sensor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0017] Figure 2 This is a partial structural diagram of the cross-section of the glass pot body in this utility model.

[0018] Figure 3 This is a schematic cross-sectional view of the electric kettle in this utility model.

[0019] Figure 4 This is an exploded structural diagram of the glass kettle body, heating plate, and metal support ring in this utility model.

[0020] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle.

[0021] Figure 6 This is an exploded view of the heating element and metal support ring in this utility model.

[0022] Figure 7 This is an exploded structural diagram of the heating plate, upper coupler, and bottom shell in this utility model.

[0023] Figure 8 This is a schematic diagram of the bottom structure of the electric kettle in this utility model.

[0024] Figure 9 This is a schematic diagram of the fastening ring structure in this utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] See Figures 1 to 9 As shown, a sensor mounting 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 placed on the outer bottom surface of the glass kettle body 1. The bottom shell 2 is connected to the bottom of the glass kettle body 1 and surrounds the heating plate 3 therein. The bottom of the glass kettle body 1 is provided with an inwardly recessed annular groove 101. A fastening ring 4 is fitted inside the annular groove 101. A temperature sensor 8 and / or a water level sensor are mounted and connected on the fastening ring 4. The sensing plane of the temperature sensor 8 and / or the water level sensor is in close contact with any groove wall of the annular groove 101.

[0027] In this embodiment of the electric kettle, the temperature sensor 8 is simply placed on the fastening ring 4. After the fastening ring 4 is assembled onto the glass kettle body 1, the installation of the sensor is completed. The structure is simple, the production efficiency is high, and the temperature sensor 8 can be closely attached to the surface of the glass kettle body, resulting in high accuracy in temperature or water level detection.

[0028] In addition, the temperature sensor 8 is arranged on the fastening ring 4, so that there is no need to open an avoidance opening on the plate body 31 of the heating plate 3 to avoid the sensing head of the temperature sensor 8, so that the plate body 31 of the heating plate 3 can remain intact and improve the heat transfer efficiency of the heating plate 3 to the glass kettle body; after the bottom shell 2 is installed at the bottom of the glass kettle body 1, the temperature sensor 8 can be hidden inside, making the appearance of the electric kettle more compact, simple and beautiful.

[0029] In other embodiments, the fastening ring 4 is equipped with only a water level sensor, or it is equipped with both a temperature sensor 8 and a water level sensor.

[0030] Specifically: The fastening ring 4 has an installation cavity 401 (when the temperature sensor 8 and the water level sensor are installed and connected at the same time, there are two installation cavities 401, and they are arranged on opposite sides of the fastening ring 4). The installation cavity 401 includes a through hole for inserting the body diameter of the temperature sensor 8, and a groove for accommodating the head of the temperature sensor 8. The groove is open upwards. The temperature sensor 8 is arranged in the installation cavity 401, and the sensing plane of the temperature sensor 8 is in close contact with the upper groove wall 102 of the annular groove 101.

[0031] A metal support ring 5 is provided on the lower side of the fastening ring 4. The hollow part of the metal support ring 5 is used for the heating tube 32 in the heating plate 3 to protrude downward. The edge of the plate body 31 in the heating plate 3 abuts against the top of the metal support ring 5. After the metal support ring 5 is tightly connected to the fastening ring 4, it supports the heating plate 3 to be close to the outer bottom surface of the glass pot body 1.

[0032] 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. The metal support ring 5 has a wire-passing port 506 at the position corresponding to the temperature sensor 8 and / or the water level sensor. The two pins of the temperature sensor 8 and / or the water level sensor pass through the wire-passing port 506 and are led to the lower side of the metal support ring 5. This structure allows the two pins to pass downward through the metal support ring 5 via the wire-passing port 506, so that the two pins of the temperature sensor 8 and / or the water level sensor do not need to be wrapped outward to the gap between the metal support ring 5 and the bottom shell 2, which can shorten the length of the two pins.

[0033] 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 fold 502 corresponding to the positioning notch 302, and a wire hole is formed after bending. Through the cooperation of the positioning fold 502 and the positioning notch 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.

[0034] 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.

[0035] The fastening ring 4 has several downwardly extending first connecting protrusions 41 circumferentially. Each first connecting protrusion 41 has a first connecting hole 411. The metal support ring 5 has a second connecting hole 501 corresponding to the first connecting hole 411. A fastening screw passes through the second connecting hole 501 and the first connecting hole 411 from bottom to top, securing the metal support ring 5 to the fastening ring 4. This fastening screw connection ensures the stability of the metal support ring 5 and makes it less susceptible to the influence of ambient 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The bottom surface of the heating plate 31 is fastened with an upper coupler 7. The upper coupler 7 is electrically connected to the heating plate 3, the temperature sensor 8 and / or the water level sensor. The upper coupler is provided 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.

[0041] 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.

[0042] 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.

[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 sensor mounting structure for an electric kettle, comprising a glass kettle body, a bottom shell, and a heating plate, wherein the heating plate is placed on the outer bottom surface of the glass kettle body, and the bottom shell is connected to the bottom of the glass kettle body and surrounds the heating plate therein, characterized in that: The bottom of the glass pot is provided with an inwardly recessed annular groove. A fastening ring is fitted inside the annular groove. A temperature sensor and / or a water level sensor are mounted and connected on the fastening ring. The sensing plane of the temperature sensor and / or the water level sensor is in close contact with any wall of the annular groove.

2. The sensor mounting structure for an electric kettle according to claim 1, characterized in that: The fastening ring has one or two mounting cavities, which are open upwards. The temperature sensor or water level sensor is installed inside the mounting cavity, and the sensing plane of the temperature sensor or water level sensor is in close contact with the upper wall of the annular groove.

3. The sensor mounting structure for an electric kettle according to claim 1, characterized in that: A metal support ring is provided on the lower side of the fastening ring. The hollow part of the metal support ring is used for the heating tube in the heating plate to protrude downwards. The edge of the heating plate abuts against the top of the metal support ring. After the metal support ring is tightly connected to the fastening ring, it supports the heating plate to be close to the outer bottom surface of the glass pot.

4. The sensor mounting structure for an electric kettle according to claim 3, characterized in that: The metal support ring has a wire hole corresponding to the position of the temperature sensor and / or water level sensor. The two pins of the temperature sensor and / or water level sensor pass through the wire hole and are led to the lower side of the metal support ring.

5. The sensor mounting structure for an electric kettle according to claim 4, characterized in that: The heating plate has two or more evenly distributed positioning notches along its edge. The metal support ring has an upwardly bent positioning flange corresponding to the positioning notch, which forms a wire through hole after bending. Through the cooperation of the positioning flange and the positioning notch, the heating plate is coaxially held against the top of the metal support ring.

6. The sensor mounting structure for an electric kettle according to claim 3, characterized in that: The fastening ring has several downwardly extending first connecting protrusions on its circumferential side. The first connecting protrusions have first connecting holes. The metal support ring has a second connecting hole corresponding to the first connecting hole. The fastening unit passes through the second connecting hole and the first connecting hole to securely connect the metal support ring to the fastening ring.

7. The sensor mounting structure for an electric kettle according to claim 6, 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.

8. The sensor mounting structure for an electric kettle according to claim 3, characterized in that: The inner edge of the metal support ring is provided with a downwardly bent reinforcing flange.

9. The sensor mounting structure for an electric kettle according to claim 3, characterized in that: The heating plate is made of aluminum heat-conducting plate. The heating tube 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.

10. The sensor mounting structure for 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 electrically connected to the heating plate, temperature sensor and / or water level sensor. The upper coupler is equipped with a temperature control component for sensing the temperature of the plate.

Images