Pot cover with infrared temperature measurement function
By designing a pot lid with infrared temperature measurement function suitable for ordinary pots, the existing pot lid structure is solved and the inaccurate temperature measurement of the thermopile detector in the kitchen environment is achieved, and accurate temperature measurement of the inside of the pot is achieved.
Patent Information
- Application Number
- CN202421540299.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The existing cooking utensils have complex structures and are not suitable for ordinary cookware. The thermopile detectors are susceptible to water, oil, and water vapor in the kitchen environment, resulting in inaccurate temperature measurement.
A pot lid with infrared temperature measurement function is designed, including the pot lid body, the pot lid panel and the infrared temperature measurement module. The photosensitive surface of the infrared temperature measurement module faces the inside of the pot tool, and receives infrared light through the light-transmitting part provided on the pot hole, which is suitable for ordinary pots.
The accurate temperature measurement of the inside of the pot on ordinary pots is achieved, which avoids complex structure problems, and reduces the influence of water, oil and water vapor through the design of the infrared temperature measurement module, and improves the accuracy of temperature measurement.
Smart Images
Figure CN222898910U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooking utensils, and particularly relates to a pot cover with an infrared temperature measurement function. Background Art
[0002] Existing temperature measurement technologies include contact temperature measurement and non-contact temperature measurement. Typical representative products of contact temperature measurement technology are thermocouples, thermistors, platinum resistors, etc. The contact temperature measurement structure can be set inside the cooking utensil, and the installation is relatively complex. Moreover, it only measures the local temperature of the installation position and is easily affected by the heat source. The typical representative product of non-contact temperature measurement is the thermopile temperature measurement technology, which can detect the temperature in a relatively large area.
[0003] Thermopile detectors are currently widely used in many temperature measurement scenarios, such as handheld infrared thermometers, forehead thermometers, and some household appliances. However, thermopile detectors have their inherent defects: the shortest wavelength of infrared rays that thermopile detectors can sense is generally greater than 2.5 μm, and they basically have no response to infrared rays with a wavelength less than 2.5 μm.
[0004] Infrared rays with a wavelength ≥ 2.5 μm have two inherent characteristics:
[0005] 1. It cannot penetrate glass (or the proportion of penetration through glass is very small and can be ignored);
[0006] 2. Its ability to penetrate water, oil, water vapor, soy sauce, vinegar, and some soft tissue objects is very weak.
[0007] Therefore, when thermopile detectors are applied in the kitchen field, they are easily affected by water, oil, water vapor, etc., resulting in signal attenuation, and thus causing inaccurate temperature measurement. In addition, for infrared rays with a wavelength ≥ 2.5 μm, the surface smoothness and color of the object have a relatively large impact on its emissivity. Therefore, for objects with the same temperature, when the surface smoothness and color differences are relatively large, the temperatures detected by the thermopile will vary greatly.
[0008] Patent CN220141416U discloses a pot cover of a cooking utensil and a cooking utensil, and details a non-contact temperature measurement scheme using an infrared temperature measurement module. The indium gallium arsenide infrared temperature measurement method is disclosed in the embodiment, but the infrared temperature measurement band is not disclosed in this patent. In addition, the pot cover in this patent includes a face cover, a lining cover, and an inner cover, and the structure is relatively complex, which is more suitable for products such as rice cookers and electric pressure cookers and is not applicable to ordinary cookware. Content of the Utility Model
[0009] The main purpose of the utility model is to propose a pot cover with an infrared temperature measurement function, aiming to solve the technical problem that the existing pot covers of cooking utensils have a relatively complex structure and are not applicable to ordinary cookware.
[0010] To achieve the above object, the pot lid with infrared temperature measurement function proposed by the present utility model includes:
[0011] A pot lid body
[0012] A pot lid panel, connected to the pot lid body, and forming an installation space with the pot lid body; and
[0013] An infrared temperature measurement module, disposed in the installation space, with the photosensitive surface of the infrared temperature measurement module facing the cookware, for measuring the temperature inside the cookware;
[0014] Wherein, at least part of the pot lid body is light-transmissive, and the photosensitive surface of the infrared temperature measurement module faces its light-transmissive part.
[0015] Optionally, a light-transmissive member is provided at the light-transmissive part of the pot lid body, and the light-transmissive member is sealingly connected to the pot lid body.
[0016] Optionally, the light-transmissive member is one of glass, quartz, and plastic.
[0017] Optionally, the photosensitive device of the infrared temperature measurement module is a photoelectric type detector.
[0018] Optionally, the photoelectric type detector is an indium gallium arsenide photodiode with a sensitive wavelength <1800nm.
[0019] Optionally, the pot lid body and / or the pot lid panel are configured with a holding part for taking and placing the pot lid.
[0020] Optionally, it further includes an interaction module electrically connected to the infrared temperature measurement module. The interaction module is disposed in the installation space and includes a display unit for real-time displaying the temperature inside the cookware and a key unit for switching the temperature measurement function.
[0021] Optionally, the interaction module further includes an alarm unit for emitting an alarm prompt when the temperature inside the cookware exceeds a preset value.
[0022] Optionally, the interaction module further includes a communication unit for communicatively connecting with the appliance for heating the cookware to perform interlocking control.
[0023] Optionally, it further includes a power supply disposed in the installation space for supplying power to the infrared temperature measurement module and the interaction module.
[0024] Optionally, the interaction module is installed on the pot lid panel.
[0025] In the technical solution of the present utility model, an installation space is formed by the pot lid body and the pot lid panel to install an infrared temperature measurement module, and a light-transmitting part is provided on the pot lid body for the photosensitive surface of the infrared temperature measurement module to receive infrared light. The above-mentioned pot lid has a simple structure, is applicable to ordinary cookware, and has strong applicability. Brief Description of the Drawings
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0027] Figure 1 It is a cross-sectional schematic diagram in the application of an embodiment of the pot lid with infrared temperature measurement function provided by the present utility model;
[0028] Figure 2 is Figure 1 a cross-sectional schematic diagram of the pot lid in
[0029] Figure 3 is Figure 1 a cross-sectional schematic diagram of the pot lid in
[0030] Figure 4 It is a cross-sectional schematic diagram of another embodiment of the pot lid with infrared temperature measurement function provided by the present utility model.
[0031] In the figure: Pot lid with infrared temperature measurement function - 1, Pot lid body - 11, Annular raised wall - 112, Light-transmitting member - 12, Pot lid panel - 13, Infrared temperature measurement module - 14, Indium gallium arsenide photodiode - 141, Interaction module - 15, Display unit - 151, Button unit - 152, Alarm unit - 153, Power supply - 16, Cookware - 2.
[0032] The realization of the object of the present invention, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments
[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.
[0034] To better describe and illustrate the embodiments of the present application, reference may be made to one or more attached drawings. However, additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the utility models, embodiments currently described, or preferred modes of the present application.
[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the positional relationship shown in the attached drawings. This is only for the convenience of describing the present utility model and does not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0037] Patent CN220141416U discloses a lid for a cooking appliance and a cooking appliance, and details a non-contact temperature measurement solution using an infrared temperature measurement module. The indium gallium arsenide infrared temperature measurement method is disclosed in the embodiments, but the infrared temperature measurement band is not disclosed in this patent. In addition, the lid in this patent includes a face lid, a lining lid, and an inner lid, and the structure is relatively complex, which is more suitable for products such as rice cookers and electric pressure cookers and is not applicable to ordinary cookware.
[0038] In view of this, the present utility model provides a lid with an infrared temperature measurement function, which is mainly used to be placed on an ordinary cookware to measure the temperature inside the cookware. Figures 1-3 For an embodiment of the lid with an infrared temperature measurement function of the present utility model, please refer to Figures 1-3 , the lid 100 includes a lid body 11, a lid panel 13, and an infrared temperature measurement module 14.
[0039] Specifically, the lid body 11 is generally spherical-crown-shaped as a whole. On the side facing away from the cookware 2, it has an annular raised wall 112. The lid panel 13 is hermetically connected to the annular raised wall 112, and the connection part between the two is light-tight. A closed installation space is formed between the lid panel 13 and the lid body 11. The infrared temperature measurement module 14 is arranged in the installation space and connected to the lid body 11 or the lid panel 13. The light-sensitive surface of the infrared temperature measurement module 14 faces the cookware 2 and is used for measuring the temperature inside the cookware 2. Among them, at least part of the lid body 11 is light-transmissive, and the light-sensitive surface of the infrared temperature measurement module 14 faces its light-transmissive part. It should be noted that the material of the lid body 11 can be an opaque material such as ceramic, plastic, or stainless steel. Its functions are, on the one hand, to cover the cookware 2 body and play a sealing role; on the other hand, its light-opaque property prevents external light from entering the inside of the cookware 2, being reflected and then irradiating onto the light-sensitive surface to form light interference; on the other hand, it can support the fixation of the infrared temperature measurement module 14. Similarly, the lid panel 13 is made of an opaque material, and it forms a relatively sealed installation space with the lid body 11. The lid panel 13 can be connected to the lid body 11 by means of screws, buckles, ultrasonic welding, etc.
[0040] In the technical solution of the present utility model, an installation space is formed by the lid body 11 and the lid panel 13 to install the infrared temperature measurement module 14, and a light-transmissive part is provided on the lid body 11 for the light-sensitive surface of the infrared temperature measurement module 14 to receive infrared light. The above-mentioned lid structure is simple, suitable for ordinary cookware 2, and has strong applicability.
[0041] To provide a light-transmissive part on the lid body 11, please refer to Figures 1-3 , in an embodiment of the present utility model, a light-transmissive member 12 is provided at the light-transmissive part of the lid body 11. The light-transmissive member 12 is hermetically connected to the lid body 11 and can reduce the destructive influence of water vapor, oil fume, and high-temperature heat inside the pot during the cooking process on the normal working environment of the components inside the installation space.
[0042] Preferably, the light-transmissive member 12 is provided at the central part of the lid body 11.
[0043] Furthermore, in an embodiment of the present utility model, the light-transmissive member 12 is one of glass, microcrystal, quartz, and plastic. These materials have light-transmissive properties, and the light-sensitive range of the infrared temperature measurement module is within its light-transmissive range.
[0044] Further, in an embodiment of the present utility model, the photosensitive device of the infrared temperature measurement module 14 is a photoelectric detector, and the photoelectric detector is an indium gallium arsenide photodiode 141 with a sensitive wavelength < 1800 nm. It should be understood that infrared rays in this wavelength range have strong penetration power for water, oil, and water vapor, and when passing through these substances, the attenuation of infrared energy is very small; infrared rays in this wavelength range also have a certain penetration power for some soft tissues such as vegetables and meats, so the temperature of deeper objects can be measured; the infrared rays in this wavelength band can detect the lowest temperature of an object to be about 80 °C.
[0045] When the photosensitive surface of the infrared temperature measurement module 14 faces the light-transmitting component, the infrared rays inside the pot pass through the light-transmitting component and irradiate onto the surface of the detector, being converted into electrical signals, and after being processed by the circuit, they are converted into temperature signals. It should be noted that the infrared temperature measurement module 14 further includes a circuit board, and the circuit board has a signal amplification circuit, a signal processing circuit, etc.
[0046] To facilitate the user to pick up and place the pot lid, in an embodiment of the present utility model, a holding portion (not shown in the figure) is formed on the annular convex wall 112 of the pot lid body 11, and the holding portion can be designed with a shape such as a groove that is convenient for grasping. Of course, the holding portion can also be constructed on the pot lid panel 13, or there are designs on both the pot lid body 11 and the pot lid panel 13.
[0047] To facilitate the user to view the temperature inside the cookware 2, please refer to Figure 3 In an embodiment of the present utility model, there is also an interaction module 15 electrically connected to the infrared temperature measurement module 14. The interaction module 15 is arranged in the installation space. The interaction module 15 includes a display unit 151 for displaying the internal temperature of the cookware 2 in real time and a key unit 152 for turning on and off the temperature measurement function. Among them, the display unit 151 can select a display screen, and a part of the pot lid panel 13 is light-transmitting to view the temperature data on the display screen.
[0048] Further, please refer to Figure 3 In an embodiment of the present utility model, the interaction module 15 is installed on the pot lid panel 13. Of course, the embodiments of the present utility model are not limited to this. In another embodiment, the interaction module 15 can also be installed on the pot lid body 11.
[0049] Please refer to Figure 3 In an embodiment of the present utility model, the interaction module 15 further includes an alarm unit 153, which is used to give an alarm prompt when the temperature inside the cookware 2 exceeds a preset value, prompting the user to reduce the firepower of the heating appliance or turn off the heating appliance. As a preferred embodiment, the alarm unit 153 can select a sound-emitting device such as a buzzer or a speaker, or can also select a light-emitting device that can flash.
[0050] To achieve the interlock between the cookware 2 and the heating appliance, in an embodiment of the present utility model, the interaction module 15 further includes a communication unit, which is used for communicatively connecting with the appliance (such as an induction cooker) that heats the cookware 2 to achieve device-to-device communication, so as to perform closed-loop temperature control.
[0051] Please refer to Figure 2 and 3 , in an embodiment of the present utility model, it further includes a power supply 16, which is arranged in the installation space and is used for supplying power to the infrared temperature measurement module 14 and the interaction module 15. The power supply 16 can be independently arranged or can be arranged on the circuit board of the infrared temperature measurement module 14.
[0052] Please refer to Figure 2 and 3 , in an embodiment of the present utility model, the infrared temperature measurement module 14 and the interaction module 15 are separately arranged. That is to say, the components of the infrared temperature measurement module 14 and the interaction module 15 are respectively integrated on different circuit boards. Of course, the implementation mode of the present utility model is not limited thereto. Please refer to Figure 4 , in another embodiment of the present utility model, the infrared temperature measurement module 14 and the interaction module 15 are integrally arranged. That is to say, the components of the infrared temperature measurement module 14 and the interaction module 15 are integrated on the same circuit board.
[0053] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.
[0054] The above embodiments only represent several implementation modes of the present application. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A pot cover with infrared temperature measurement function, characterized in that: include: Pot cover body (11), a pot cover panel (13) connected to the pot cover body (11) and forming an installation space with the pot cover body (11); and an infrared temperature measurement module (14), arranged in the installation space, the photosensitive surface of the infrared temperature measurement module (14) facing the cookware (2), and used for measuring the temperature inside the cookware (2); The pot cover body (11) is at least partially light-transmissive, and the light-sensitive surface of the infrared temperature measurement module (14) faces the light-transmissive portion.
2. The pot cover with infrared temperature measurement function as claimed in claim 1, characterized in that: A light-transmitting part (12) is provided at the light-transmitting portion of the pot cover body (11), and the light-transmitting part (12) is sealedly connected to the pot cover body (11).
3. The pot cover with infrared temperature measurement function as claimed in claim 2, characterized in that: The light-transmitting member (12) is made of one of glass, quartz and plastic.
4. The pot cover with infrared temperature measurement function as claimed in claim 1, characterized in that: The light-sensitive device of the infrared temperature measurement module (14) is a photoelectric detector, and the photoelectric detector is an indium gallium arsenide photodiode (141) with a sensitive wavelength of less than 1800 nm.
5. The pot cover with infrared temperature measurement function as claimed in claim 1, characterized in that: The pot cover body (11) and / or the pot cover panel (13) are configured with a holding portion for taking and placing the pot cover.
6. The pot cover with infrared temperature measurement function as claimed in claim 1, characterized in that: It also includes an interactive module (15) electrically connected to the infrared temperature measurement module (14), wherein the interactive module (15) is arranged in the installation space and includes a display unit (151) for displaying the internal temperature of the cookware (2) in real time and a button unit (152) for turning on and off the temperature measurement function.
7. The pot cover with infrared temperature measurement function as claimed in claim 6, characterized in that: The interactive module (15) further comprises an alarm unit (153) for issuing an alarm when the temperature inside the cookware (2) exceeds a preset value.
8. The pot cover with infrared temperature measurement function as claimed in claim 6, characterized in that: The interaction module (15) further comprises a communication unit, which is used to communicate with the heating cooker (2) to perform interlocking control.
9. The pot cover with infrared temperature measurement function as claimed in claim 6, characterized in that: It also includes a power supply (16), which is arranged in the installation space and is used to supply power to the infrared temperature measurement module (14) and the interaction module (15).
10. The pot cover with infrared temperature measurement function as claimed in claim 6, characterized in that: The interactive module (15) is mounted on the pot cover panel (13).