An electromagnetic oven ultrasonic wave pot detecting and positioning system and electromagnetic oven

Abstract

The utility model relates to kitchen and bath electric appliance technical field discloses a kind of induction cooker ultrasonic pot detection positioning system and induction cooker, and induction cooker ultrasonic pot detection positioning system includes: multiple ultrasonic transmitters are arranged in the first edge and second edge of induction cooker panel;Multiple ultrasonic receivers are arranged in the third edge and fourth edge of panel;Ultrasonic transmitter and ultrasonic receiver one-to-one correspondence, oppositely arranged;Ultrasonic receiver receives the transmission signal of ultrasonic transmitter, forms ultrasonic matrix grid;When placing cookware on panel, shielding part transmission signal, controller obtains corresponding abscissa and ordinate according to the arrangement order number of ultrasonic receiver obtained without receiving transmission signal, determines the position of cookware.This application is based on ultrasonic matrix technology to cookware detection and positioning, accurately determine the position of cookware on panel.

Description

Technical Field

[0001] This utility model relates to the field of kitchen and bathroom appliance technology, specifically to an ultrasonic pot detection and positioning system for an induction cooker and an induction cooker. Background Technology

[0002] An induction cooker uses alternating current passing through a heating coil to generate an alternating magnetic field whose direction changes continuously. When the magnetic field lines cut through the cookware placed on the induction cooker, eddy currents appear at the bottom of the cookware. These eddy currents drive the charge carriers in the cookware to move, causing the bottom of the cookware to heat up, thus achieving the purpose of heating the food inside the cookware.

[0003] The prior art discloses that when a cookware is placed on the panel of an induction cooker, a bending wave is generated; an acoustic-electric conversion element provided on the induction cooker is adapted to receive the bending wave, convert it into an electrical signal, and transmit it to a control processor; the position of at least one cookware on the induction cooker panel is determined according to the different times when multiple acoustic-electric conversion elements located at different positions transmit electrical signals to the control processor. Utility Model Content

[0004] In view of this, the present invention provides an ultrasonic pot detection and positioning system for induction cookers, which is different from the existing pot detection and positioning structure for induction cookers, so as to conveniently, accurately and quickly determine the position of the pot on the induction cooker panel.

[0005] In a first aspect, this utility model provides an ultrasonic pot detection and positioning system for an induction cooker, comprising: Multiple ultrasonic transmitters are evenly spaced and arranged at intervals along the first and second edges of the upper surface of the induction cooker panel. Multiple ultrasonic receivers are evenly spaced and arranged along the third and fourth edges of the upper surface of the induction cooker panel. The first and third edges are parallel in the longitudinal direction, while the second and fourth edges are parallel in the transverse direction. An ultrasonic transmitter on the first edge corresponds one-to-one with an ultrasonic receiver on the third edge, and they are positioned opposite each other. Similarly, an ultrasonic transmitter on the second edge corresponds one-to-one with an ultrasonic receiver on the fourth edge, and they are positioned opposite each other. Each ultrasonic receiver is adapted to receive the transmitted signals from the ultrasonic transmitters. The multiple ultrasonic receivers receive the transmitted signals from the multiple ultrasonic transmitters, forming an ultrasonic matrix grid. The ultrasonic matrix grid uses the arrangement sequence number of the ultrasonic receivers on the third edge as the ordinate and the arrangement sequence number of the ultrasonic receivers on the fourth edge as the abscissa. This pair of abscissa and ordinate determines a unique position on the panel. A controller is connected to multiple ultrasonic receivers; the controller is adapted to obtain the sequence number of the ultrasonic receivers that have not received the transmitted signal, and thus obtain the corresponding horizontal and vertical coordinates. The ultrasonic pot detection and positioning system for induction cookers is suitable for situations where, when a pot is placed on the induction cooker panel, the pot partially obstructs the ultrasonic receivers from receiving the transmitted signals. The controller then determines the position of the pot by obtaining the corresponding horizontal and vertical coordinates based on the sequence number of the ultrasonic receivers that did not receive the transmitted signals. Beneficial effects: This application employs the above technical solution, using ultrasonic matrix technology to detect and position pots on the induction cooker panel. When the pot is placed on the panel, it partially obstructs the ultrasonic transmission signals. The missing transmission signals correspond to the horizontal and vertical coordinates, allowing for convenient, accurate, and rapid determination of the pot's position on the panel surface. Ultrasonic waves can identify pots of any material, truly achieving complete pot detection without omissions. Furthermore, it can simultaneously detect the positions of multiple pots; as long as the induction cooker panel area is large enough, there is no limit to the number of pots that can be detected and positioned.

[0006] Optionally, the distance between adjacent ultrasonic receivers is not less than 1 mm.

[0007] Optionally, eight ultrasonic transmitters are evenly distributed longitudinally along the first edge, and fourteen ultrasonic transmitters are evenly distributed transversely along the second edge.

[0008] Secondly, this utility model also provides an induction cooker, comprising: panel; The aforementioned ultrasonic pot detection and positioning system for induction cookers.

[0009] Optionally, it also includes: At least two electromagnetic heating coils are distributed below the panel; the positions of the electromagnetic heating coils correspond to their positions in the ultrasonic matrix grid; the electromagnetic heating coils are signal-connected to the controller; the controller is adapted to activate the electromagnetic heating coil corresponding to the cookware position to heat the cookware. Beneficial effects: This application, employing the above technical solution, achieves precise control of the corresponding electromagnetic heating coils to heat the cookware based on accurate detection and positioning of the cookware position, significantly reducing energy consumption.

[0010] Optionally, when the cookware is placed in the corresponding ultrasonic matrix grid between adjacent electromagnetic heating coils, the controller controls the adjacent electromagnetic heating coils to output power in the same proportion to heat the cookware. Beneficial effects: This application, by adopting the above technical solution, achieves precise control of multiple corresponding electromagnetic heating coils to heat the cookware based on accurate detection and positioning of the cookware's position, thereby improving heating efficiency and achieving heating balance.

[0011] Optionally, nine electromagnetic heating coils are provided below the panel, arranged in three rows along the longitudinal direction and three columns along the transverse direction.

[0012] Optionally, it also includes: An electromagnetic heating coil is disposed below the panel; the position of the electromagnetic heating coil corresponds to the position in the ultrasonic matrix grid; the electromagnetic heating coil is signal-connected to a controller; the controller is adapted to activate the electromagnetic heating coil to heat the cookware when the cookware is placed in the position corresponding to the position in the ultrasonic matrix grid of the electromagnetic heating coil.

[0013] Optionally, the controller is adapted to activate the electromagnetic heating coil to heat the cookware when the cookware is placed in the ultrasonic matrix grid corresponding to the center of the electromagnetic heating coil. Beneficial effects: By adopting the above technical solution, the induction cooker operates when the cookware is placed in the center of the electromagnetic heating coil, achieving optimal energy saving and heating effects.

[0014] Optionally, the electromagnetic heating coil is connected to the controller signal via a drive circuit. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram showing the arrangement of the ultrasonic transmitter and ultrasonic receiver in the ultrasonic pot detection and positioning system for an induction cooker provided in this embodiment of the present invention. Figure 2 This is a schematic diagram showing the arrangement of the electromagnetic heating coils in the multi-head combined induction cooker provided in this utility model embodiment. Figure 3 This is a schematic diagram of placing cookware on a multi-burner induction cooker, as provided in this embodiment of the invention. Figure 1 ; Figure 4 This is a schematic diagram of placing cookware on a multi-burner induction cooker, as provided in this embodiment of the invention. Figure 2 ; Figure 5 This is a schematic diagram showing the arrangement of the electromagnetic heating coil of the single-head induction cooker provided in this embodiment of the utility model. Figure 6 This is a schematic diagram of placing a pot on a single-burner induction cooker, as provided in this embodiment of the invention. Figure 1 ; Figure 7 This is a schematic diagram of placing a pot on a single-burner induction cooker, as provided in this embodiment of the invention. Figure 2; Figure 8 This is a schematic diagram of placing cookware on a multi-burner induction cooker, as provided in this embodiment of the invention. Figure 3 .

[0017] Explanation of reference numerals in the attached figures: 1. Ultrasonic transmitter; 2. Panel; 3. Ultrasonic receiver; 4. Cookware; 5. Electromagnetic heating coil. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 A specific embodiment of the ultrasonic pot detection and positioning system for an induction cooker shown includes: multiple ultrasonic transmitters 1, multiple ultrasonic receivers 3, and a controller. This application uses ultrasonic matrix technology to detect and position the pot 4 on the induction cooker panel 2. Ultrasonic waves are mechanical vibration waves with frequencies greater than 20,000 Hz and exceeding the upper limit of human hearing threshold; their wavelength in air is generally shorter than 2 cm. Ultrasonic waves have the characteristics of good directionality, strong penetration, easy acquisition of concentrated sound energy, and long propagation distance in water. Ultrasonic waves can be applied to ranging, speed measurement, cleaning, welding, and stone crushing, among other applications.

[0020] like Figure 1As shown, multiple ultrasonic transmitters 1 are evenly spaced and arranged along the first and second edges of the upper surface of the panel 2 of the induction cooker. Multiple ultrasonic receivers 3 are evenly spaced and arranged along the third and fourth edges of the upper surface of the panel 2; the panel 2 can be square. The first and third edges are parallel in the longitudinal direction, and the second and fourth edges are parallel in the transverse direction. The ultrasonic transmitters 1 on the first edge correspond one-to-one with the ultrasonic receivers 3 on the third edge, and are arranged opposite each other. The ultrasonic transmitters 1 on the second edge correspond one-to-one with the ultrasonic receivers 3 on the fourth edge, and are arranged opposite each other. The ultrasonic receivers 3 are adapted to receive the transmitted signals from the ultrasonic transmitters 1. The ultrasonic receivers 3 may have a signal amplification circuit to amplify the received transmitted signals, enabling them to receive the transmitted signals effectively and stably. The multiple ultrasonic receivers 3 receive the transmitted signals from the multiple ultrasonic transmitters 1, forming an ultrasonic matrix grid. The ultrasonic matrix grid uses the arrangement sequence number of the ultrasonic receivers 3 on the third edge as the ordinate and the arrangement sequence number of the ultrasonic receivers 3 on the fourth edge as the abscissa; this pair of abscissa and ordinate determines a unique position on the panel 2. The ultrasonic matrix grid is a crisscrossing grid. The controller is signal-connected to multiple ultrasonic receivers 3; the controller is adapted to obtain the sequence number of the ultrasonic receivers 3 that have not received a transmission signal, and thus obtain the corresponding horizontal and vertical coordinates. The ultrasonic pot detection and positioning system for induction cookers is adapted to determine the position of the pot 4 by using the ultrasonic receivers 3 that partially block the transmission signal when the pot 4 is placed on the panel 2 of the induction cooker, based on the obtained sequence number of the ultrasonic receivers 3 that have not received a transmission signal. The number of ultrasonic transmitters 1 and ultrasonic receivers 3 can be freely arranged according to the size of the panel 2 to form a reliable ultrasonic matrix grid. The ultrasonic matrix grid has no limit on the number of pots 4 it can detect; as long as the panel 2 is large enough, it can detect an unlimited number of pots 4.

[0021] Specifically, the distance between adjacent ultrasonic receivers 3 is not less than 1 millimeter.

[0022] Specifically, eight ultrasonic transmitters 1 are evenly distributed longitudinally along the first edge, and fourteen ultrasonic transmitters 1 are evenly distributed transversely along the second edge. For example... Figure 1 As shown, the horizontal axis from left to right is 1-14; the vertical axis from top to bottom is 1-8.

[0023] like Figures 2 to 8 As shown, this application also provides an induction cooker, including: a panel 2 and the aforementioned ultrasonic pot detection and positioning system for the induction cooker.

[0024] Furthermore, such as Figure 2 As shown, the induction cooker described in this application further includes at least two electromagnetic heating coils 5, which are distributed below the panel 2. This type of induction cooker is also known as a multi-head combination induction cooker. The positions of the electromagnetic heating coils 5 correspond to their positions in the ultrasonic matrix grid; the electromagnetic heating coils 5 are signal-connected to the controller; the controller is adapted to activate the electromagnetic heating coil 5 corresponding to the position of the cookware 4 to heat the cookware 4. Specifically, as... Figure 2 , Figure 4 and Figure 8 As shown, nine electromagnetic heating coils 5 are arranged in three rows longitudinally and three columns transversely below the panel 2. The nine electromagnetic heating coils 5 are evenly distributed both longitudinally and transversely. The three electromagnetic heating coils 5 in the first row are located in areas A, B, and C from left to right; the three electromagnetic heating coils 5 in the second row are located in areas D, E, and F from left to right; and the three electromagnetic heating coils 5 in the third row are located in areas G, H, and I from left to right. Figure 3 and Figure 4 As shown, when the cookware 4 is placed on the panel 2, it blocks the ultrasonic emission signals of the areas with vertical coordinates 6-7 and horizontal coordinates 2-3. It is then determined that the cookware 4 is above the electromagnetic heating coil 5 in area G. The electromagnetic heating coil 5 in area G can then be activated to heat the cookware 4, while the other electromagnetic heating coils 5 can remain inactive.

[0025] Furthermore, such as Figure 8 As shown, when the cookware 4 is placed in the corresponding ultrasonic matrix grid between adjacent electromagnetic heating coils 5, the controller controls the adjacent electromagnetic heating coils 5 to output power in the same proportion to heat the cookware 4. Figure 8 As shown, when the cookware 4 is placed on the panel 2, it blocks the ultrasonic emission signals from areas 3-4 (vertical coordinate) and 5-6 (horizontal coordinate). This indicates that the cookware 4 is located above the electromagnetic heating coils 5 in areas A, B, D, and E. Therefore, the four electromagnetic heating coils 5 located in these areas can be activated to heat the cookware 4, while the other electromagnetic heating coils 5 remain inactive. Similarly, the cookware 4 can be detected anywhere on the panel 2 of the multi-head induction cooker, allowing control of the corresponding electromagnetic heating coil 5 to heat the cookware 4, achieving reliable heating across the entire panel 2 without any blind spots.

[0026] Furthermore, such as Figure 5As shown, the induction cooker described in this application further includes: an electromagnetic heating coil 5, which is disposed below the panel 2; this type of induction cooker is also referred to as a single-head induction cooker. The position of the electromagnetic heating coil 5 corresponds to its position in the ultrasonic matrix grid; the electromagnetic heating coil 5 is signal-connected to a controller; the controller is adapted to activate the electromagnetic heating coil 5 to heat the cookware 4 when the cookware 4 is placed in the position corresponding to the position in the ultrasonic matrix grid of the electromagnetic heating coil 5. Figure 6 As shown, when the pot 4 is placed on the panel 2, it blocks the ultrasonic wave transmission signals in the areas of horizontal coordinate 7-8 and vertical coordinate 4-5. The controller detects the missing ultrasonic wave transmission signals, determines that the pot 4 is located at the position of the electromagnetic heating coil 5, and thus drives the electromagnetic heating coil 5 to work and heat the pot 4. Similarly, if the pot 4 is placed outside the position of the electromagnetic heating coil 5, since heating cannot be performed outside the position of the electromagnetic heating coil 5, the controller detects the coordinates of the pot 4, determines that the pot 4 is outside the heating position of the electromagnetic heating coil 5, and thus does not drive the electromagnetic heating coil 5 to heat the pot 4.

[0027] Furthermore, such as Figure 7 As shown, the controller is adapted to activate the electromagnetic heating coil 5 to heat the cookware 4 when the cookware 4 is placed in the ultrasonic matrix grid corresponding to the center of the electromagnetic heating coil 5.

[0028] Specifically, the electromagnetic heating coil 5 is connected to the controller signal via a drive circuit.

[0029] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. An ultrasonic pot detection and positioning system for an induction cooker, characterized in that, include: Multiple ultrasonic transmitters (1) are evenly spaced and arranged on the first and second edges of the upper surface of the panel (2) of the induction cooker; Multiple ultrasonic receivers (3) are evenly spaced and arranged on the third and fourth edges of the upper surface of the panel (2) of the induction cooker; the first and third edges are arranged parallel to each other in the longitudinal direction, and the second and fourth edges are arranged parallel to each other in the transverse direction; the ultrasonic transmitters (1) of the first edge correspond one-to-one with the ultrasonic receivers (3) of the third edge and are arranged opposite each other; the ultrasonic transmitters (1) of the second edge correspond one-to-one with the ultrasonic receivers (3) of the fourth edge and are arranged opposite each other; the ultrasonic receivers (3) are adapted to receive the transmitted signals of the ultrasonic transmitters (1); the multiple ultrasonic receivers (3) receive the transmitted signals of the multiple ultrasonic transmitters (1) to form an ultrasonic matrix grid; the ultrasonic matrix grid uses the arrangement sequence number of the ultrasonic receivers (3) of the third edge as the vertical axis and the arrangement sequence number of the ultrasonic receivers (3) of the fourth edge as the horizontal axis; a pair of horizontal and vertical axes determine a unique position on the panel (2); The controller is connected to multiple ultrasonic receivers (3) via signals; the controller is adapted to obtain the sequence number of the ultrasonic receivers (3) that have not received the transmitted signal, and thus obtain the corresponding horizontal and vertical coordinates; The ultrasonic pot positioning system for induction cookers is adapted to be used when the pot (4) is placed on the panel (2) of the induction cooker, and the ultrasonic receiver (3) of the pot (4) is partially blocked from receiving the transmitted signal. The controller obtains the corresponding horizontal and vertical coordinates based on the sequence number of the ultrasonic receivers (3) that have not received the transmitted signal, thereby determining the position of the pot (4).

2. The ultrasonic pot detection and positioning system for induction cookers according to claim 1, characterized in that, The distance between adjacent ultrasonic receivers (3) is not less than 1 mm.

3. The ultrasonic pot detection and positioning system for induction cookers according to claim 1, characterized in that, Eight ultrasonic transmitters (1) are evenly distributed longitudinally along the first edge, and fourteen ultrasonic transmitters (1) are evenly distributed transversely along the second edge.

4. An induction cooker, characterized in that, include: Panel (2); The ultrasonic pot detection and positioning system for induction cookers according to any one of claims 1-3.

5. The induction cooker according to claim 4, characterized in that, Also includes: At least two electromagnetic heating coils (5) are distributed below the panel (2); the position of the electromagnetic heating coils (5) corresponds to the position in the ultrasonic matrix grid; the electromagnetic heating coils (5) are connected to the controller; the controller is adapted to activate the electromagnetic heating coils (5) corresponding to the position of the cookware (4) to heat the cookware (4).

6. The induction cooker according to claim 5, characterized in that, When the cookware (4) is placed in the corresponding ultrasonic matrix grid between adjacent electromagnetic heating coils (5), the controller controls the adjacent electromagnetic heating coils (5) to output power in the same proportion to heat the cookware (4).

7. The induction cooker according to claim 5 or 6, characterized in that, Below the panel (2) are nine electromagnetic heating coils (5) arranged in three rows along the longitudinal direction and three columns along the transverse direction.

8. The induction cooker according to claim 4, characterized in that, Also includes: An electromagnetic heating coil (5) is disposed below the panel (2); the position of the electromagnetic heating coil (5) corresponds to the position in the ultrasonic matrix grid; the electromagnetic heating coil (5) is signal connected to the controller; the controller is adapted to activate the electromagnetic heating coil (5) to heat the cookware (4) when the cookware (4) is placed in the position in the ultrasonic matrix grid corresponding to the electromagnetic heating coil (5).

9. The induction cooker according to claim 8, characterized in that, The controller is adapted to activate the electromagnetic heating coil (5) to heat the cookware (4) when the cookware (4) is placed in the ultrasonic matrix grid corresponding to the center of the electromagnetic heating coil (5).

10. The induction cooker according to claim 5 or 8, characterized in that, The electromagnetic heating coil (5) is connected to the controller signal via a drive circuit.

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