Infrared temperature measurement structure of heating device and heating device

Abstract

The utility model discloses an infrared temperature measurement structure of a heating device and the heating device, and relates to the technical field of temperature measurement, the infrared temperature measurement structure is mounted on a heating base, and an infrared temperature measurement assembly is arranged on the inner side wall of a mounting cavity on the heating base; the infrared temperature measurement assembly comprises an infrared temperature measurement unit and an elastically telescopic limiting piece; a probe hole is formed in the surface of the limiting piece; in a normal state, the limiting piece protrudes out of the surface of the mounting cavity; the infrared temperature measurement unit points to the detection hole; when the liquid container is arranged in the installation cavity, the limiting piece and the outer side wall of the liquid container abut against each other and extrude each other, so that the distance between the infrared temperature measuring unit and the outer side wall of the liquid container is constant. And the infrared temperature measuring unit is not in contact with the liquid container. The infrared temperature measurement assembly is arranged on the side wall, so that the influence of heat at the bottom of the mounting cavity on temperature measurement is avoided; the limiting piece extrudes and fixes the liquid container, the consistency and stability of compensation value calculation are guaranteed, and then the precision of infrared temperature measurement is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement, in particular to an infrared temperature measurement structure of a heating device and a heating device. Background Art

[0002] In the prior art, liquid heaters such as kettles usually have a heating / heating device or a heat-conducting device at the bottom of the kettle body. On this basis, in order to achieve precise heating / temperature control of the liquid, a temperature sensor is usually set at the bottom of the kettle body, near the heating device or the heat-conducting device, to measure the temperature of the liquid inside the kettle body. For example, the patent document with the announcement number CN211933667U provides an electromagnetic heating kettle, including a base and a cup body. The base includes a shell, a coil heating plate, a circuit board, a fan, a frame, and a panel. The frame is arranged in the shell, the coil heating plate is installed on the top surface of the frame, the circuit board and the fan are arranged below the coil heating plate, the panel is installed on the top surface of the shell, a through hole is provided in the center of the panel, an insulating sleeve is provided in the through hole, the top of the insulating sleeve is higher than the panel, and there is a thermostat. The temperature measuring part of the thermostat is located on the top surface of the insulating sleeve, and the bottom of the thermostat passes downward through the coil heating plate to connect with the circuit board.

[0003] Because heat energy is transferred upward from the bottom of the kettle, the area in contact with the heating element is typically hotter than other areas. Consequently, temperature measurements made by temperature measuring devices at the bottom of the kettle can be inaccurate, often resulting in a significant difference in temperature between the temperature and that of the liquid inside the kettle.

[0004] In addition, the prior art also uses infrared temperature measurement technology to measure the temperature of the liquid in the kettle. The basic principle of infrared temperature measurement is to receive the infrared radiation energy emitted by the object and convert it into an electrical signal to obtain the temperature information of the object. However, as the measurement distance increases, the radiation energy received by the infrared temperature measurement unit will decrease, resulting in a decrease in temperature measurement accuracy. Since distance has a significant impact on the accuracy of infrared temperature measurement, distance compensation is required. Through compensation, the temperature measurement error caused by distance changes can be reduced or eliminated, and the accuracy of the measurement results can be improved. The compensation accuracy is usually at the millimeter level. However, the existing liquid heaters that use infrared temperature measurement often have tolerances on the size of parts, resulting in an unfixed distance between the infrared temperature measurement unit and the structure being measured after assembly, which in turn affects the compensation of the infrared temperature measurement accuracy. Summary of the Invention

[0005] In response to the problems in the related art, the utility model proposes an infrared temperature measurement structure of a heating device and a heating device to achieve more accurate temperature measurement.

[0006] The utility model is achieved in this way:

[0007] An infrared temperature measurement structure of a heating device is installed on a heating base. The heating base is provided with a concave mounting cavity for accommodating a liquid container. The bottom of the mounting cavity is a heating portion or a heat conducting portion for heating the liquid container. The structure comprises:

[0008] An infrared temperature measurement component is provided on the inner wall of the installation cavity; the infrared temperature measurement component includes an infrared temperature measurement unit and an elastically retractable limiter; a detection hole is provided on the surface of the limiter;

[0009] In a normal state, the limiting member protrudes from the surface of the installation cavity; the infrared temperature measuring unit points to the detection hole;

[0010] When the liquid container is placed in the installation cavity, the limiting member and the outer wall of the liquid container abut and squeeze each other, so that the distance between the infrared temperature measuring unit and the outer wall of the liquid container is constant; the infrared temperature measuring unit has no contact with the liquid container.

[0011] By placing the infrared temperature measurement assembly on the sidewall, the influence of heat generated by the heating or heat-conducting components at the bottom of the mounting cavity on the temperature measurement can be minimized. A resilient stopper is used to squeeze the liquid container, maintaining the relative position of the liquid container and the mounting cavity after assembly. This ensures the consistency and stability of the compensation value calculation, and thus the accuracy of the infrared temperature measurement. At this point, the stopper is partially retracted toward the sidewall by the liquid container; the liquid container is also squeezed in the opposite direction by the stopper until it is fixed.

[0012] After the liquid container is installed, the constant distance between the infrared temperature measuring unit and the outer wall of the liquid container is the compensation distance.

[0013] As a further optimization of the above scheme, the infrared temperature measurement component includes a bracket; the side wall of the installation cavity is provided with an opening; the heating base has an inner cavity; the bracket is provided in the inner cavity and fixedly connected to the opening; the limiting member is connected to the bracket; and the limiting member partially passes through the opening.

[0014] As a further optimization of the above solution, the infrared temperature measuring unit is fixed on the bracket;

[0015] When the limiting member abuts against the outer wall of the liquid container, the detection end of the infrared temperature measuring unit does not exceed the surface of the limiting member, and there is a gap between the detection end of the infrared temperature measuring unit and the outer wall of the liquid container.

[0016] As a further optimization of the above solution, a spring is further provided on the bracket; one end of the spring is connected to the bracket, and the other end abuts against the inner side surface of the limiting member.

[0017] As a further optimization of the above solution, a limiting groove is provided on one side surface of the bracket; the notch of the limiting groove faces the opening; and the limiting groove cooperates with one end of the spring.

[0018] As a further optimization of the above solution, a vertically protruding guide column is provided on the inner side surface of the limiting member; one end of the spring is sleeved on the outer peripheral side of the guide column.

[0019] The guide post can help guide the compression of the spring.

[0020] As a further optimization of the above solution, the part of the limiting member that passes through the opening is a telescopic part; the edge of the telescopic part facing inward is provided with a raised limiting part; under normal conditions, the limiting part cooperates with the bracket so that only the telescopic part passes through the opening.

[0021] Furthermore, the limiting member is a shell structure with an open side and a hollow interior, with the open side facing the bracket, which can reduce the use of materials and reduce the space required for the limiting member to move and extend.

[0022] Furthermore, the telescopic portion is provided with a guide surface facing obliquely upward to assist the liquid container in squeezing the limiting member.

[0023] As a further optimization of the above solution, the detection end of the infrared temperature measuring unit extends to the detection hole; it also includes a waterproof ring; the waterproof ring is arranged on the inner side of the limiter and is located at the connection between the detection hole and the infrared temperature measuring unit.

[0024] The waterproof ring can prevent water from entering the heating base and infrared temperature measurement component.

[0025] As a further optimization of the above scheme, the inner side surface of the limiting member is provided with a plurality of vertically raised limiting protrusions on the outer peripheral side of the detection hole; there is a gap between the limiting protrusions and the edge of the detection hole; the waterproof ring is arranged on the gap; the detection end of the infrared temperature measuring unit and the limiting protrusions are tightly connected with the waterproof ring.

[0026] The utility model also provides a heating device, including a heating base and a liquid container, wherein the heating base is provided with an installation cavity, the installation cavity is adapted to the size of the bottom of the liquid container, and the bottom of the installation cavity is a heating part or a heat-conducting part; an infrared temperature measurement structure of a heating device as described above is also applied.

[0027] The beneficial effects are as follows:

[0028] The utility model provides an infrared temperature measurement structure and a heating device for a heating device. By arranging the infrared temperature measurement component at the side wall, the influence of the heat generated by the heating part or the heat conducting part at the bottom of the installation cavity on the temperature measurement can be avoided as much as possible. An elastically retractable limiter is used to squeeze the liquid container so that the relative positional relationship between the liquid container and the installation cavity remains unchanged after they are assembled with each other, thereby ensuring the consistency and stability of the compensation value calculation, and thus ensuring the accuracy of the infrared temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a heating device provided in an embodiment of the present utility model;

[0030] Figure 2 A partially enlarged cross-sectional structural diagram of a heating base provided in an embodiment of the present utility model;

[0031] Figure 3 A schematic diagram of the split structure of the infrared temperature measurement component provided in an embodiment of the utility model;

[0032] Figure 4 A schematic structural diagram of a position limiting member provided in an embodiment of the present utility model;

[0033] Figure 5 A schematic diagram of the coordination of the position limiting member, the infrared temperature measuring unit, and the waterproof ring provided in an embodiment of the present utility model;

[0034] Figure 6 This is a structural schematic diagram of the heating base and liquid container provided in an embodiment of the present utility model during assembly.

[0035] Reference numerals:

[0036] 1. Heating base; 1-1. Mounting cavity; 1-2. Heat conducting part; 1-3. Inner cavity;

[0037] 2. Bracket; 2-1. Limiting groove;

[0038] 3. Infrared temperature measurement unit;

[0039] 4. Limiting member; 4-1. Telescopic portion; 4-2. Limiting portion; 4-3. Guide column; 4-4. Detection hole; 4-5. Limiting protrusion; 4-6. Spacer; 4-7. Guide surface;

[0040] 5. Waterproof ring;

[0041] 6. Spring;

[0042] 7. Gap;

[0043] 8. Liquid container. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] like Figures 1 to 6 As shown, the present invention provides a heating device comprising a heating base 1 and a liquid container 8. The heating base 1 is provided with a mounting cavity 1-1, which is adapted to the size of the bottom of the liquid container 8. The bottom of the mounting cavity 1-1 is a heat conducting portion 1-2 made of glass material, which is used to heat the liquid container 8. The liquid container 8 is a pot body made of glass material, which has good and uniform heat conduction effect and is not easy to burn. Compared with metal, glass material is less likely to chemically react with liquids, affecting the taste of drinking tea or purified water.

[0046] An infrared temperature measurement structure of a heating device as described above is also used, including an infrared temperature measurement component, which is arranged on the inner wall of the installation cavity 1-1.

[0047] The infrared temperature measurement component includes a bracket 2, an infrared temperature measurement unit 3 and an elastically retractable limiter 4.

[0048] In this embodiment, the sidewall of the mounting cavity 1-1 is provided with an opening; the heating base 1 has an inner cavity 1-3; the bracket 2 is disposed within the inner cavity 1-3 and fixedly connected to the opening. A retaining groove 2-1 is provided on one side surface of the bracket 2; the notch of the retaining groove 2-1 faces the opening.

[0049] In this embodiment, the stopper 4 includes a telescopic portion 4-1; a raised stopper 4-2 is provided on the edge of one side of the telescopic portion 4-1. Specifically, the stopper 4 is a hollow shell structure with an open side. When the stopper 4 is connected to the bracket 2, the open side faces toward the bracket 2. A vertically raised guide post 4-3 is provided on the inner surface of the stopper 4.

[0050] In this embodiment, a detection hole 4-4 is further provided on the surface of the telescopic portion 4-1; the inner side surface of the limiting member 4 is provided with a plurality of vertically raised limiting protrusions 4-5 on the outer peripheral side of the detection hole 4-4; and there is a gap 4-6 between the limiting protrusion 4-5 and the edge of the detection hole 4-4.

[0051] It also includes a waterproof ring 5; the waterproof ring 5 is arranged on the inner side of the limiting member 4 and on the interval 4-6.

[0052] In this embodiment, the bracket 2 is also provided with a spring 6. During assembly, the guide post 4-3 faces the retaining groove 2-1. The retaining groove 2-1 engages with one end of the spring 6, connecting it to the bracket 2. The other end of the spring 6 is sleeved around the outer periphery of the guide post 4-3 and abuts against the inner surface of the retaining member 4. The guide post 4-3 assists in guiding the compression of the spring 6.

[0053] In this embodiment, the infrared temperature measuring unit 3 is fixed to the bracket 2; the detection end of the infrared temperature measuring unit 3 points to the detection hole 4-4, and the detection end of the infrared temperature measuring unit 3 and the limiting protrusions 4-5 are tightly fitted with the waterproof ring 5. The waterproof ring 5 prevents water from entering the heating base 1 and the infrared temperature measuring assembly.

[0054] In a normal state, only the telescopic portion 4 - 1 passes through the opening and enters the installation cavity 1 - 1 .

[0055] In this embodiment, the telescopic portion 4-1 is provided with a guide surface 4-7 facing obliquely upward to assist the liquid container 8 in squeezing the limiter 4. When the liquid container 8 is placed in the mounting cavity 1-1, the limiter 4 and the outer wall of the liquid container 8 abut against each other. The limiter 4 and the outer wall of the liquid container 8 abut against each other and squeeze each other. At this time, the limiter 4 partially retracts toward the side wall under the action of the liquid container 8; the liquid container 8 is also squeezed in the opposite direction by the action of the limiter 4 until it is fixed. The detection end of the infrared temperature measuring unit 3 does not extend beyond the surface of the limiter 4, and there is a gap 7 between the detection end of the infrared temperature measuring unit 3 and the outer wall of the liquid container 8. The gap 7 obtained each time the liquid container 8 is assembled with the mounting cavity 1-1 is consistent.

[0056] By arranging the infrared temperature measurement component at the side wall, the influence of the heat generated by the heating part or the heat conducting part 1-2 at the bottom of the installation cavity 1-1 on the temperature measurement can be avoided as much as possible; the elastically retractable limiter 4 is used to squeeze the liquid container 8, so that the relative position relationship between the liquid container 8 and the installation cavity 1-1 remains unchanged after assembly, thereby ensuring the consistency and stability of the compensation value calculation, and thus ensuring the accuracy of the infrared temperature measurement.

[0057] After the liquid container 8 is installed, the constant distance between the infrared temperature measuring unit 3 and the outer wall of the liquid container 8, namely the “gap 7”, is the compensation distance.

[0058] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation to the present invention.

Claims

1. An infrared temperature measurement structure of a heating device, mounted on a heating base, wherein the heating base is provided with a concave mounting cavity for accommodating a liquid container, and the bottom of the mounting cavity is a heating portion or a heat conducting portion for heating the liquid container; characterized in that: include: An infrared temperature measurement component is provided on the inner wall of the installation cavity; the infrared temperature measurement component includes an infrared temperature measurement unit and an elastically retractable limiter; a detection hole is provided on the surface of the limiter; In a normal state, the limiting member protrudes from the surface of the installation cavity; the infrared temperature measuring unit points to the detection hole; When the liquid container is placed in the installation cavity, the limiting member and the outer wall of the liquid container abut and squeeze each other, so that the distance between the infrared temperature measuring unit and the outer wall of the liquid container is constant; the infrared temperature measuring unit has no contact with the liquid container.

2. The infrared temperature measurement structure of a heating device according to claim 1, characterized in that: The infrared temperature measurement component includes a bracket; the side wall of the installation cavity is provided with an opening; the heating base has an inner cavity; the bracket is provided in the inner cavity and fixedly connected to the opening; the limiting member is connected to the bracket; and the limiting member partially passes through the opening.

3. The infrared temperature measurement structure of a heating device according to claim 2, characterized in that: The infrared temperature measuring unit is fixed on the bracket; When the limiting member abuts against the outer wall of the liquid container, the detection end of the infrared temperature measuring unit does not exceed the surface of the limiting member, and there is a gap between the detection end of the infrared temperature measuring unit and the outer wall of the liquid container.

4. The infrared temperature measurement structure of a heating device according to claim 2, characterized in that: The bracket is further provided with a spring; one end of the spring is connected to the bracket, and the other end abuts against the inner side surface of the limiting member.

5. The infrared temperature measurement structure of a heating device according to claim 4, characterized in that: A limiting groove is provided on one side surface of the bracket; the notch of the limiting groove faces the opening; and the limiting groove cooperates with one end of the spring.

6. The infrared temperature measurement structure of a heating device according to claim 4, characterized in that: A vertically protruding guide column is provided on the inner side surface of the limiting component; one end of the spring is sleeved on the outer peripheral side of the guide column.

7. The infrared temperature measurement structure of a heating device according to claim 2, characterized in that: The portion of the limiting member passing through the opening is a telescopic portion; a raised limiting portion is provided on the inner edge of the telescopic portion; In a normal state, the limiting portion cooperates with the bracket so that only the telescopic portion passes through the opening.

8. The infrared temperature measurement structure of a heating device according to claim 2, characterized in that: The detection end of the infrared temperature measuring unit extends to the detection hole; it also includes a waterproof ring; the waterproof ring is arranged on the inner side of the limiting member and is located at the connection between the detection hole and the infrared temperature measuring unit.

9. The infrared temperature measurement structure of a heating device according to claim 8, characterized in that: The inner side surface of the limiting member is provided with a plurality of vertically raised limiting protrusions on the outer peripheral side of the detection hole; there is a gap between the limiting protrusions and the edge of the detection hole; the waterproof ring is provided on the gap; the detection end of the infrared temperature measuring unit and the limiting protrusions are tightly connected with the waterproof ring.

10. A heating device comprising a heating base and a liquid container, wherein the heating base is provided with a mounting cavity, the mounting cavity being adapted in size to the bottom of the liquid container, the bottom of the mounting cavity being a heating portion or a heat conducting portion; characterized in that: An infrared temperature measurement structure of a heating device according to any one of claims 1 to 9 is applied.

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