Weighing type electric kettle

Abstract

The utility model provides a weighing type electric kettle, which comprises a kettle body, a heating plate used for heating the kettle body, three weighing sensors and a controller, the kettle body is arranged above the heating plate, the three weighing sensors are arranged on the bottom surface of the heating plate, the three weighing sensors are uniformly distributed on the same horizontal virtual circle, and the controller is arranged on the bottom surface of the heating plate. The center of the virtual circle is located on the extension line of the axis of the kettle body, the projection area of the kettle body covers the three weighing sensors, and the three weighing sensors are electrically connected with the controller. According to the electric kettle, the three weighing sensors evenly distributed on the same horizontal virtual circle are arranged to weigh the kettle body, the kettle body of the electric kettle can cover the three weighing sensors, the circle center of the virtual circle is located on the extension line of the axis of the kettle body, the weight of the kettle body can be more evenly distributed through the three weighing sensors, and the weight of the kettle body is more uniform. Therefore, the total weight of the kettle body is measured more accurately, accurate water level information in the kettle body is obtained, and the accuracy of water level measurement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric kettles, in particular to a weighing type electric kettle. Background Art

[0002] The electric kettle with automatic water filling, with its intelligent and convenient features, provides a more comfortable and efficient hot water preparation solution for modern families. This kind of electric kettle is usually equipped with a water level sensor inside. When the water is insufficient, the water level sensor will send a signal. After receiving the signal, the controller will control the water pump to add water to the kettle, or the controller will automatically control the circuit to cut off the power to avoid dry boiling, ensuring safe use. However, the water level sensor inside the electric kettle is easily affected by scale deposition, and the measured water level data is inaccurate. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a weighing electric kettle to improve the accuracy of water level measurement.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A weighing electric kettle comprises a kettle body, a heating plate for heating the kettle body, three weighing sensors and a controller, wherein the kettle body is arranged above the heating plate, the three weighing sensors are arranged on the bottom of the heating plate, the three weighing sensors are evenly distributed on a virtual circle at the same level, the center of the virtual circle is located on the extension line of the axis of the kettle body, the projection area of ​​the kettle body covers the three weighing sensors, and the three weighing sensors are electrically connected to the controller respectively.

[0006] Preferably, a horizontal support plate is further provided below the heating plate, and the bottom surfaces of the three weighing sensors are all in contact with the top surface of the support plate.

[0007] Preferably, the support plate comprises a circular ring body and three abutment plates radially arranged on the edge of the circular ring body, and the bottom surfaces of the three weighing sensors abut against the top surfaces of the three abutment plates respectively.

[0008] Preferably, a stud sleeve is provided on the bottom surface of the heating plate, and four first bolts pass through four corners of the same weighing sensor and are screwed on the four stud sleeves respectively, so that the weighing sensor is installed on the bottom surface of the heating plate.

[0009] Preferably, the weighing sensor partially protrudes from the support plate, and the two corners of the weighing sensor close to the center of the virtual circle are defined as inner corners. A first through hole is opened on the support plate at a position corresponding to the inner corners, and the first bolt is passed through the first through hole to thread the weighing sensor onto the stud sleeve.

[0010] Preferably, a second through hole is opened on the support plate at a position corresponding to the center of the weighing sensor, and the second bolt passes through the second through hole and is screwed to the center of the weighing sensor.

[0011] Preferably, a water pipe is provided below the heating plate, one end of the water pipe is connected to the water supply device, and the other end passes through the heating plate and is connected to the tea cavity inside the pot body, and the water supply device is electrically connected to the controller.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The kettle body is weighed by setting three weighing sensors evenly distributed on a virtual circle at the same level. The kettle body of the electric kettle can cover the three weighing sensors, and the center of the virtual circle is located on the extension line of the axis of the kettle body. The three weighing sensors can weigh the kettle body more evenly, thereby more accurately measuring the total weight of the kettle body, and then obtaining accurate water level information in the kettle body, thereby improving the accuracy of water level measurement;

[0014] (2) Compared with two weighing sensors, the three weighing points corresponding to the three weighing sensors have higher accuracy, better balance and disperse the weight, and reduce errors. Moreover, after the weighing sensors are installed, the connection lines of the three weighing sensors form a triangular structure. The triangle has excellent stability and load-bearing capacity, which can improve the accuracy of water level measurement. Compared with four or more weighing sensors, the cost of setting up three weighing sensors in this application is lower, so the three weighing sensors have the advantages of stable measurement and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the weighing sensor and the support plate in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the support plate in the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 5 It is a three-dimensional cross-sectional view of the utility model.

[0020] Figure ID:

[0021] 1-pot body; 2-heating plate; 21-stud sleeve; 3-weighing sensor; 31-inner corner; 4-support plate; 41-circular ring body; 42-abutment plate; 43-first through hole; 44-second through hole; 5-first bolt; 5a-first bolt on the outside; 5b-first bolt on the inside; 6-second bolt; 7-water pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] See also Figure 1 A weighing electric kettle comprises a kettle body 1, a heating plate 2 for heating the kettle body 1, three weighing sensors 3 and a controller, wherein the kettle body 1 is arranged above the heating plate 2, and the three weighing sensors 3 are arranged on the bottom surface of the heating plate 2, and the three weighing sensors 3 are evenly distributed on the same horizontal virtual circle, the center of the virtual circle is located on the extension line of the axis of the kettle body 1, and the projection area of ​​the kettle body 1 covers the three weighing sensors 3, and the three weighing sensors 3 are electrically connected to the controller (not shown) respectively.

[0025] The kettle body 1 is weighed by setting three weighing sensors 3 evenly distributed on a virtual circle at the same level. The kettle body 1 of the electric kettle can cover three weighing sensors 3, and the center of the virtual circle is located on the extension line of the axis of the kettle body 1. The three weighing sensors 3 can weigh the kettle body 1 more evenly, thereby more accurately measuring the total weight of the kettle body 1, and then obtaining accurate water level information in the kettle body 1, thereby improving the accuracy of water level measurement. Compared with two weighing sensors 3, the three weighing points corresponding to the three weighing sensors 3 have higher accuracy, better balance and disperse the weight, and reduce errors. Moreover, after the weighing sensors 3 are installed, the connection lines of the three weighing sensors 3 form a triangular structure. The triangle has excellent stability and load-bearing capacity, which can improve the accuracy of water level measurement. Compared with four or more weighing sensors 3, the cost of setting three weighing sensors 3 in this application is lower, so the three weighing sensors 3 have the advantages of stable measurement and low cost.

[0026] It should be noted that the working principle of the weighing sensor is that the elastic body inside it produces elastic deformation under the action of external force, and the resistance strain gauge attached to the surface of the elastic body will also produce deformation, causing its resistance value to change. This resistance change is converted by the corresponding measurement circuit and becomes an electrical signal output, thereby completing the process of converting the external force into an electrical signal. In the electric kettle, the weighing sensor is used to detect the weight of water. When water is added to the kettle body 1, the gravity of the water will act on the bottom of the kettle body 1, and the gravity of the bottom of the kettle body 1 will act on the heating plate 2, and the gravity of the heating plate 2 will act on the weighing sensor. By measuring the deformation of the elastic body caused by the gravity of the water, the weight of the water is measured. Since the shape and size of the kettle are known, the water level can be calculated by measuring the weight of the water. Relying on this principle, the water level in the kettle body 1 is monitored, so as to ensure that the amount of water added reaches the preset water level when adding water automatically. After reaching the preset water level, the controller controls the water supply device to stop adding water. When the weight of the water in the kettle body 1 is insufficient, the weighing sensor senses the insufficient weight and transmits the signal to the controller, which controls the circuit to cut off the power to avoid dry burning, thereby ensuring safe use.

[0027] Preferably, see Figures 1 to 4 A horizontal support plate 4 is further provided below the heating plate 2, and the bottom surfaces of the three weighing sensors 3 are all in contact with the top surface of the support plate 4. By providing the horizontal support plate 4 to support the three weighing sensors 3, it is possible to ensure that the three weighing sensors 3 are maintained on the same horizontal plane, thereby improving the stability of the weighing sensors 3 and avoiding affecting the accuracy of the water level measurement.

[0028] Among them, see Figure 2 and Figure 3The support plate 4 includes a circular ring body 41 and three abutment plates 42 radially arranged at the edge of the circular ring body 41, and the bottom surfaces of the three weighing sensors 3 respectively abut the top surfaces of the three abutment plates 42. The circular ring body 41 is connected to the three abutment plates 42, and the three abutment plates 42 respectively support the three weighing sensors 3, which can ensure the stability of the three weighing sensors 3.

[0029] For further information, see Figure 4 , a stud sleeve 21 is provided on the bottom surface of the heating plate 2, and four first bolts 5 are respectively passed through the four corners of the same load cell 3 and screwed on the four stud sleeves 21, so that the load cell 3 is installed on the bottom surface of the heating plate 2. By providing the stud sleeve 21 on the bottom surface of the heating plate 2, passing the first bolt 5 through the load cell 3 and screwing it on the stud sleeve 21, the load cell 3 can be installed on the bottom surface of the heating plate 2. The four corners of the same load cell 3 are screwed to the bottom surface of the heating plate 2 through the first bolts 5, which further ensures the stability of the load cell 3, and then ensures the accuracy of the water level measurement.

[0030] For further information, see Figures 1 to 4 The weighing sensor 3 partially protrudes from the support plate 4. The two corners of the weighing sensor 3 close to the center of the virtual circle are defined as inner corners 31. A first through hole 43 is provided on the support plate 4 at a position corresponding to the inner corner 31. The first bolt 5 passes through the weighing sensor 3 and is screwed onto the stud sleeve 21 through the first through hole 43. Figure 2 and Figure 4 , among the four first bolts 5 screwed to the same weighing sensor 3, two are the outer first bolts 5a, i.e., the two first bolts farther from the center of the virtual circle, and the other two are the inner first bolts 5b, i.e., the two first bolts closer to the center of the virtual circle. A first through hole 43 is provided on the support plate 4 at a position corresponding to the inner corner 31, through which the two inner first bolts 5b are passed through the weighing sensor 3 and screwed to the stud sleeve 21. The setting of the first through hole 43 facilitates the installation of the inner first bolts 5b, reserves a mounting position for the installation of the inner first bolts 5b, and also facilitates the adjustment of the installation position. When the installation is wrong, the inner first bolts 5b can be easily removed, which has the advantage of quick installation and quick removal. The weighing sensor 3 partially protrudes from the support plate 4, so that the outer first bolts 5a do not need to pass through the support plate 4, but directly pass through the weighing sensor 3 and screw on the stud sleeve 21, reducing the hole position setting of the support plate 4, thereby reducing the manufacturing cost and manufacturing difficulty of the support plate 4.

[0031] For further information, see Figures 2 to 4A second through hole 44 is opened on the support plate 4 at a position corresponding to the center of the weighing sensor 3, and the second bolt 6 passes through the second through hole 44 and is screwed to the center of the weighing sensor 3 to achieve fixation between the weighing sensor 3 and the support plate 4, preventing the weighing sensor 3 from tilting relative to the support plate 4, and improving the stability of the weighing sensor 3.

[0032] In this embodiment, a water pipe 7 is further provided below the heating plate 2, one end of the water pipe 7 is connected to a water supply device (not shown), and the other end passes through the heating plate 2 and is connected to the tea water cavity inside the kettle body 1. The water supply device is electrically connected to the controller. The water pipe 7 connects the water supply device and the tea water cavity inside the kettle body 1, and is used to transfer water from the water supply device to the tea water cavity inside the kettle body 1. The controller controls the operation of the water supply device to realize the start and stop of water addition.

[0033] The above are only 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 should be included in the protection scope of the present invention.

Claims

1. A weighing electric kettle, characterized in that: The invention comprises a kettle body (1), a heating plate (2) for heating the kettle body (1), three weighing sensors (3) and a controller, wherein the kettle body (1) is arranged above the heating plate (2), the three weighing sensors (3) are arranged on the bottom surface of the heating plate (2), the three weighing sensors (3) are evenly distributed on a virtual circle at the same level, the center of the virtual circle is located on the extension line of the axis of the kettle body (1), the projection area of ​​the kettle body (1) covers the three weighing sensors (3), and the three weighing sensors (3) are electrically connected to the controller respectively.

2. The weighing electric kettle according to claim 1, characterized in that: A horizontal support plate (4) is also provided below the heating plate (2), and the bottom surfaces of the three weighing sensors (3) are in contact with the top surface of the support plate (4).

3. The weighing electric kettle according to claim 2, characterized in that: The support plate (4) comprises a circular ring body (41) and three abutment plates (42) radially arranged on the edge of the circular ring body (41), and the bottom surfaces of the three weighing sensors (3) respectively abut against the top surfaces of the three abutment plates (42).

4. The weighing electric kettle according to claim 2, characterized in that: The bottom surface of the heating plate (2) is provided with a stud sleeve (21), and four first bolts (5) respectively pass through four corners of the same weighing sensor (3) and are screwed onto the four stud sleeves (21), so that the weighing sensor (3) is installed on the bottom surface of the heating plate (2).

5. The weighing electric kettle according to claim 4, characterized in that: The weighing sensor (3) partially protrudes from the support plate (4); the two corners of the weighing sensor (3) close to the center of the virtual circle are defined as inner corners (31); a first through hole (43) is provided on the support plate (4) at a position corresponding to the inner corner (31); the first bolt (5) is passed through the weighing sensor (3) through the first through hole (43) and is screwed onto the stud sleeve (21).

6. The weighing electric kettle according to claim 5, characterized in that: A second through hole (44) is provided on the support plate (4) at a position corresponding to the center of the weighing sensor (3), and a second bolt (6) passes through the second through hole (44) and is screwed to the center of the weighing sensor (3).

7. The weighing electric kettle according to any one of claims 1 to 6, characterized in that: A water pipe (7) is also provided below the heating plate (2); one end of the water pipe (7) is connected to a water supply device, and the other end passes through the heating plate (2) to be connected to the tea water cavity inside the pot body (1); the water supply device is electrically connected to the controller.

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