CN219300820U

CN219300820U - Induction cooking appliance

Info

Publication number: CN219300820U
Application number: CN202320769557.6U
Authority: CN
Inventors: 管兴勇
Original assignee: Hangzhou Yue Magnetic Technology Co ltd
Current assignee: Hangzhou Yue Magnetic Technology Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-07-04
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses an induction cooking appliance, which comprises a cooking main body, a heating wire coil and an infrared temperature measurement detector, wherein the cooking main body is provided with a glass panel for placing a pot, the outer surface of the glass panel is provided with ink, and an infrared light transmission area and a non-infrared light transmission area are formed; the heating wire coil is arranged in the cooking main body and is used for inductively heating a cooker arranged on the glass panel; the sensitive element light sensing surface of the infrared temperature measurement detector is opposite to the infrared light transmission area. According to the technical scheme, the infrared light transmission area is used for transmitting infrared rays with specific wavelengths, the non-infrared light transmission area is used for enabling the glass panel to be impermeable to the infrared rays with specific wavelengths, interference of ambient interference light on the sensitive surface of the infrared detector sensitive element is reduced, the effect of the optical filter is achieved, an independent optical filter is omitted, the assembly structure of the detector is simplified, the size of the detector can be reduced, and the cost can be reduced.

Description

Induction cooking appliance

Technical Field

The utility model relates to the technical field of induction cooking appliances, in particular to an induction cooking appliance with a glass panel barrier.

Background

The existing temperature measurement technology represents the thermopile temperature measurement technology of products, and a thermopile detector can detect infrared rays with the wavelength of more than 3 mu m, but basically has no response to infrared rays with the wavelength of less than 3 mu m. An induction cooking appliance, such as a glass panel (typically a glass-ceramic panel) for an induction cooker, transmits infrared rays with a wave band of less than 2.8 mu m, so that the thermopile detector cannot basically sense the infrared rays transmitted through glass-ceramic.

In the prior art, an induction cooker using an InGaAs sensor as an induction cooking utensil is disclosed, and according to the characteristics of microcrystalline glass, a proper infrared probe can be matched to improve the temperature measurement and temperature control precision of the induction cooker. As disclosed in patent CN2019218056461, an infrared temperature measuring device and an electromagnetic oven are disclosed, wherein the infrared temperature measuring device comprises an indium gallium arsenic infrared detector, a detector protecting shell, a signal processing circuit board, a shielding shell and an optical filter. However, the filter mounting structure is complex, so that the detector assembly is very difficult to manufacture and is complex to mount; and the filter is an independent accessory, so that the cost is high.

Disclosure of Invention

The utility model mainly aims to provide an induction cooking utensil, and aims to solve the technical problems that an optical filter mounting structure of a detector of the existing induction cooking utensil is complex, difficult to manufacture and high in cost.

To achieve the above object, the present utility model provides an induction cooking appliance including:

the cooking device comprises a cooking main body, a cooking device and a cooking device, wherein the cooking main body is provided with a glass panel for placing a pot, the outer surface of the glass panel is provided with ink, and an infrared light transmission area and a non-infrared light transmission area of infrared rays with specific wave bands are formed on the outer surface of the glass panel;

the heating wire coil is arranged in the cooking main body and is used for inductively heating a cooker arranged on the glass panel; the method comprises the steps of,

the sensitive element photosurface of the infrared temperature measurement detector is opposite to the infrared light transmission area.

Optionally, the shape of the infrared light transmissive region includes one of a circle and a square.

Optionally, the infrared light transmitting region is located in the center of the glass panel.

Optionally, the area size of the infrared light transmission area is 16mm to 400 mm.

Optionally, the infrared temperature detector is an indium gallium arsenic photodiode with an infrared sensitive wave band of 0.9-1.7 μm.

Optionally, the high-transmittance area of the infrared transmittance area is in a wave band of 1.25-1.8 mu m; the cut-off area is in a wave band of 0.7-1.2 mu m; and the boundary area between the cut-off area and the high-permeability area is 1.2-1.25 mu m.

Optionally, the band range of the demarcation region is 0.02 μm to 0.1 μm.

Optionally, the cut-off area of the non-infrared light transmission area is in a wave band of 0.7-1.8 mu m.

Optionally, the exterior of the cooking body is further provided with a control assembly.

According to the technical scheme, the infrared light transmission area is arranged on the glass panel through the ink to transmit infrared rays with specific wavelengths, and the non-infrared light transmission area is arranged, so that the glass panel is not permeable to infrared rays with specific wavelengths, interference light is prevented from being reflected or refracted in other areas of the panel, interference of ambient interference light on the sensitive surface of the sensitive element of the infrared detector is reduced, the effect of the optical filter is realized, an independent optical filter is omitted, the assembly structure of the detector is simplified, the size of the detector can be reduced, and the cost can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an induction cooking appliance according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of ambient light interference in another embodiment of an induction cooking appliance according to the present utility model;

fig. 3 is a schematic plan view of an embodiment of an induction cooking apparatus provided by the present utility model.

In the figure: the induction cooking device comprises an induction cooking appliance-100, a cooking main body-1, a glass panel-11, an infrared light transmission area-112, a non-infrared light transmission area-113, a control component-12, a heating wire coil-2, an infrared temperature measurement detector-3 and a cooker-200.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

For a better description and illustration of embodiments of the present application, reference may be made to one or more of the accompanying drawings, but additional details or examples used to describe the drawings should not be construed as limiting the scope of any one of the inventive, presently described embodiments or preferred modes of carrying out the present application.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are positional relationships based on the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus referred to must have a specific orientation or operate in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Referring to fig. 1, in the cooking process, after a part of ambient interference light passes through the glass panel 11, the ambient interference light passes through the internal components (such as the upper surface of the coil panel) of the cooking appliance and the glass panel 11, and is reflected between the internal components and the cooker for multiple times, and finally irradiates the photosensitive surface of the sensitive element of the infrared detector, so as to interfere the detector, thereby inaccurate temperature measurement is caused. In addition, referring to fig. 2, if some cookers are uneven and the infrared detector is not placed in the cooking center, ambient interference light is also refracted to the photosensitive surface of the sensitive element of the infrared detector directly through the panel, so as to form interference.

In view of this, the present utility model provides an induction cooking apparatus 100, fig. 1 to 3 are schematic views showing an embodiment of the induction cooking apparatus 100 according to the present utility model, referring to fig. 1 to 3, the induction cooking apparatus 100 includes a cooking main body 1, a heating wire coil 2 and an infrared temperature detector 3.

In this embodiment, the surface of the cooking body 1 is provided with a glass panel 11 for placing the cooker 200, the surface of the glass panel 11 is provided with ink, and the surface layer of the glass panel 11 presents an infrared light transmission area with a specific wave band and an infrared light non-transmission area with a specific wavelength, namely an infrared light transmission area 112 and a non-infrared light transmission area 113 by changing the content of toner in the ink; the heating wire coil 2 is arranged in the cooking main body 1 and is used for induction heating of a cooker 200 arranged on the glass panel 11; the sensitive element light sensing surface of the infrared temperature measuring detector 3 is opposite to the infrared light transmitting area 112. It should be appreciated that to prevent abrasion, it is preferable that the ink is applied to the lower surface of the glass panel 11.

According to the technical scheme, the infrared light transmission area 112 is arranged on the glass panel 11 through the ink to transmit infrared rays with specific wavelengths, and the non-infrared light transmission area 113 is arranged, so that the glass panel 11 is impermeable to infrared rays with specific wavelengths, interference light is prevented from being reflected or refracted in through other areas of the panel, interference of environment interference light on the sensitive surface of the infrared detector sensitive element is reduced, the effect of the optical filter is realized, an independent optical filter is omitted, the assembly structure of the detector is simplified, the size of the detector can be reduced, and the cost can be reduced.

Referring to fig. 3, in an embodiment of the present utility model, the shape of the ir-transparent region 112 includes one of a circle and a square, and it should be understood that the shape of the ir-transparent region 112 is configured to match the shape of the light-sensitive surface of the sensor of the ir-detector, so as to provide a better receiving effect, but may be configured in other shapes.

Referring to fig. 3, in one embodiment of the present utility model, the infrared transparent region 112 is located at the center of the glass panel 11 because the cooker 200 is generally placed at the center of the glass panel 11 for heating. Of course, the infrared detector is also arranged below the center.

In an embodiment of the present utility model, the area of the infrared transparent area 112 is 16mm to 400 mm. The excessive area can cause direct or refractive entrance of ambient interference light, and the area of the infrared light-transmitting area 112 is controlled to be 16mm to 400mm, so that the anti-interference effect is good.

In an embodiment of the present utility model, the infrared temperature detector 3 is an indium gallium arsenic photodiode with an infrared sensitive wave band ranging from 0.9 μm to 1.7 μm, and the cost of the indium gallium arsenic photodiode under the sensitive wave band is low, so that the cost of the induction cooking appliance 100 can be reduced. Of course, an indium gallium arsenic photodiode with a higher sensitive band range may also be selected.

In an embodiment of the present utility model, the high-transmittance region of the infrared transparent region 112 is in a wavelength band of 1.25 μm to 1.8 μm; the cut-off area is in a wave band of 0.7-1.2 mu m; and the boundary area between the cut-off area and the high-permeability area is 1.2-1.25 mu m. The detector adopts the indium gallium arsenic photodiode with the infrared sensitive wave band of 0.9-1.7 mu m, the high-transmittance area of the infrared light-transmittance area 112 is set to be 1.25-1.8 mu m wave band and the cut-off area is set to be 0.7-1.2 mu m wave band by adjusting the filter wave band of the infrared light-transmittance area 112, so that the detection lower limit of the detector moves to the long wave band, and the influence of low-wave band environmental light such as sunlight, lamplight and the like is greatly reduced. In addition, the light transmittance of the wave band of 0.7-1.2 mu m of the cut-off area is less than 5%, and the light transmittance of the wave band of 1.25-1.8 mu m of the high-transmittance area is more than 85%, so that a good anti-interference effect can be achieved.

In practical applications, the upper limit of the cut-off region of the infrared light-transmitting region 112 may be set to be between 1.1 μm and 1.4 μm, and the lower limit of the corresponding high-transmittance region of the infrared light-transmitting region 112 is set to be between 1.1 μm and 1.4 μm, so as to reduce the influence of ambient light such as sunlight and lamplight as much as possible; on the other hand, the main sensitive band of the infrared temperature detector 3 is reserved.

Further, the band range of the boundary region is 0.02-0.1 mu m, and the boundary region is as small as possible, so that the effect of resisting ambient light interference is better, and the temperature measurement is more accurate.

In an embodiment of the present utility model, the cut-off area of the non-infrared light-transmitting area 113 is in a wavelength band of 0.7 μm to 1.8 μm, so as to effectively block light rays in the wavelength band from being emitted into the cooking main body 1, and greatly reduce the influence of low-band ambient light such as sunlight, lamplight, etc. In addition, the light transmittance of the non-infrared light transmission region 113 in the wave band of 0.7 μm-1.8 μm is less than 5%, so that a good anti-interference effect can be achieved.

Referring to fig. 3, in an embodiment of the present utility model, a control component 12 is further disposed on the outer surface of the cooking body 1, for interactively displaying the working state of the cooking appliance and performing functional regulation.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. An induction cooking appliance, comprising:

the cooking device comprises a cooking main body (1), a cooking device and a cooking device, wherein the cooking main body is provided with a glass panel (11) for placing cookware, the surface of the glass panel (11) is provided with ink, and an infrared light transmission area (112) and a non-infrared light transmission area (113) of infrared rays with specific wave bands are formed;

the heating wire coil (2) is arranged in the cooking main body (1) and is used for inductively heating a cooker arranged on the glass panel (11); the method comprises the steps of,

the sensitive element light sensing surface of the infrared temperature measuring detector (3) is opposite to the infrared light transmitting area (112).

2. The induction cooking appliance of claim 1, wherein the shape of the infrared transparent region (112) comprises one of a circle and a square.

3. The induction cooking appliance according to claim 1, characterized in that the infrared light-transmitting zone (112) is located in the center of the glass panel (11).

4. The induction cooking appliance according to claim 1, characterized in that the area size of the infrared light transmission area (112) is 16mm to 400 mm.

5. Induction cooking appliance according to claim 1, characterized in that the infrared temperature detector (3) is an indium gallium arsenic photodiode with an infrared sensitive band of 0.9 μm to 1.7 μm.

6. Induction cooking appliance according to claim 1 or 5, characterized in that the high transmission area of the infrared transmission area (112) is in the band of 1.25 μm to 1.8 μm; the cut-off area is in a wave band of 0.7-1.2 mu m; and the boundary area between the cut-off area and the high-permeability area is 1.2-1.25 mu m.

7. The induction cooking appliance of claim 6, wherein the band range of the demarcation zone is 0.02 μm to 0.1 μm in size.

8. Induction cooking appliance according to claim 1 or 5, characterized in that the cut-off area of the non-infrared transparent area (113) is in the band 0.7 μm to 1.8 μm.

9. Induction cooking appliance according to claim 1, characterized in that the exterior of the cooking body (1) is further provided with a control assembly (12).