All-glass kettle capable of accurately controlling temperature

Abstract

The utility model discloses an all-glass kettle capable of accurately controlling temperature, which relates to the technical field of kettles and comprises a glass kettle body, the bottom of the glass kettle body is connected with a heating base, a heating body tightly attached to the bottom surface of the glass kettle body is arranged in the heating base, one side of the heating body is hollowed out to form an assembly notch, and the assembly notch is arranged on the bottom surface of the glass kettle body. A temperature sensor is arranged in the assembling notch and is tightly attached to the bottom surface of the glass kettle body; according to the electric kettle, the temperature sensor can accurately obtain temperature data of the bottom face of the glass kettle body, misjudgment caused by indirect measurement or local temperature difference is avoided, the use safety of the electric kettle is improved, a user is more relieved in the use process, and anxiety and potential safety risks caused by worrying about dry burning are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of kettle, concretely is a full glass kettle of accurate temperature control. BACKGROUND

[0002] With the improvement of people's living quality, the requirements of daily necessities such as electric kettle are increasingly diversified and refined. In the field of traditional electric kettle, there are many aspects that need to be improved and optimized to meet the needs of users for accurate temperature control, safe use and product durability.

[0003] Temperature control precision is crucial for electric kettle, it not only directly affects the experience of users when using, such as whether the required water temperature can be accurately reached to meet the brewing requirements of different drinks, but also involves the safe operation of the equipment, and the dry burning prevention function is the key link to ensure safety. Accurate temperature control can ensure that the water temperature is just right during heating, neither too hot nor too cold, and effective dry burning prevention measures can avoid safety accidents caused by dry burning of the kettle without water, such as damage of glass kettle body, fire hazard, etc.

[0004] In many electric kettles, the installation position of temperature sensor is not in the optimal state. The common situation is that the temperature sensor does not directly contact with the bottom surface of glass kettle body, but detects the temperature in an indirect way, for example, it is installed in other parts of the heating base, and the temperature is sensed by air or other medium conducting heat. In this way, there is a certain deviation between the temperature detected by the temperature sensor and the actual water temperature in the kettle, and due to the delay and unevenness of heat conduction, the accuracy and timeliness of temperature control are greatly reduced.

[0005] Therefore, it is necessary to propose an improved technical scheme to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a technical scheme to solve the above problems.

[0007] A full glass kettle of accurate temperature control, comprising a glass kettle body, a heating base connected to the bottom of the glass kettle body, a heating element closely attached to the bottom surface of the glass kettle body arranged in the heating base, the heating element is hollow on one side to form an assembly gap, a temperature sensor is arranged in the assembly gap and closely attached to the bottom surface of the glass kettle body.

[0008] As a further scheme of the utility model, a flexible member is wrapped around the lower end of the glass kettle body, the lower end of the flexible member extends to form an abutting block which is connected to the assembly gap, the temperature sensor is located between the abutting block and the glass kettle body, and the temperature sensor is closely attached to the bottom surface of the glass kettle body through the abutting block.

[0009] As a further solution of the present invention: a support frame is installed along the inner side of the heating base, and the bottom of the glass pot body is supported on the support frame;

[0010] The support frame abuts against the flexible component, and an abutting portion extending from the inner side of the support frame supports the abutting block.

[0011] As a further solution of the present invention: an assembly groove is opened along the end surface of the abutment block, and the temperature sensor is embedded in the assembly groove, wherein the temperature sensing end of the temperature sensor is at least partially exposed outside the assembly groove and connected to the bottom surface of the glass pot body.

[0012] As a further solution of the present invention: a water level sensor is encapsulated on the inner side of the flexible member so that the water level sensor is located on the outer peripheral side of the bottom of the glass pot body.

[0013] As a further solution of the present invention: the heating element is connected to the bottom surface of the glass pot in a plane so that the heating element generates heat in a planar manner.

[0014] As a further solution of the present invention: a main controller electrically connected to the temperature sensor and the water level sensor is provided on the glass kettle body, the heating base or the external power connection device.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1) The temperature sensor is located close to the bottom of the glass kettle and in the assembly gap near the heating element. It can quickly detect a sharp rise in the bottom temperature of the glass kettle when the kettle is dry-boiling. Because heat cannot be absorbed by water during dry-boiling, the bottom temperature of the glass kettle will rise rapidly. The temperature sensor can immediately sense this change. Compared with traditional installation methods, this design greatly shortens the dry-boiling detection time and can promptly trigger the anti-dry-boiling protection mechanism to stop heating, effectively preventing damage to the glass kettle due to prolonged dry-boiling and reducing the risk of fire hazards and other safety accidents.

[0017] 2) Based on direct contact temperature detection, the temperature sensor can accurately obtain the temperature data of the bottom surface of the glass kettle, avoiding misjudgment caused by indirect measurement or local temperature differences. During normal use, even if the water level in the kettle is low or unevenly distributed, the temperature sensor can accurately determine whether there is a risk of dry boiling based on the actual temperature of the glass bottom surface. This reliable dry boiling prevention judgment improves the safety of electric kettles, giving users greater confidence during use and reducing the anxiety and potential safety risks caused by the worry of dry boiling.

[0018] 3) Because the temperature sensor is in close contact with the bottom surface of the glass kettle, it can directly sense the temperature change of the glass kettle, avoiding the error caused by indirect measurement, so that the actual temperature of the water in the kettle can be accurately measured, and accurate temperature data can be provided for the temperature control system, whether in the heating process or the insulation stage, accurate power adjustment can be carried out according to the real-time accurate temperature information, so that the water temperature can always be kept within the range set by the user, and the accurate requirements of different beverages on the brewing water temperature can be met.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood by those skilled in the art through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is Figure 1 is a sectional structural schematic diagram of the present application along the direction of A-A;

[0023] Figure 3 is Figure 2 is an enlarged structural schematic diagram of A in the present application;

[0024] Figure 4 is a structural schematic diagram of the heating body, flexible member and support frame in the present application.

[0025] The reference signs and names in the drawings are as follows:

[0026] 1, glass kettle; 2, heating base; 3, heating body; 4, assembly notch; 5, temperature sensor; 6, flexible member; 7, abutting block; 8, support frame; 9, abutting part; 10, assembly groove; 11, water level sensor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] Please refer to Figures 1-4 The utility model discloses an accurate temperature control all -glass kettle, including glass kettle body 1, the bottom of glass kettle body 1 is connected with heating base 2, be provided with the heating body 3 that is close to the glass kettle body 1 bottom surface in heating base 2, one side of heating body 3 is hollowed out to form the assembly gap 4, be provided with temperature sensor 5 in assembly gap 4, and temperature sensor 5 is close to the glass kettle body 1 bottom surface.

[0029] The utility model technical scheme has:

[0030] Glass kettle body 1 has good transparency and sanitary performance, but its heat conduction performance is relatively special, adopts the mode that glass kettle body 1 bottom and heating base 2 are closely combined in the design, ensures that heat can be effectively transferred from heating base 2 to glass kettle body 1, and heating body 3 in heating base 2 passes through the direct contact with the bottom surface of glass kettle body 1 and transfers heat to the liquid in the kettle, and this structural design is favorable for realizing even heating and reducing the local overheating or temperature uneven phenomenon caused by the uneven material or unreasonable structure of glass kettle body 1.

[0031] Temperature sensor 5 is arranged at the assembly gap 4 in heating base 2, and it is close to the bottom surface of glass kettle body 1, and this design principle aims at realizing the direct contact between temperature sensor 5 and glass kettle body 1, and maximumly reduces the medium interference in heat transfer process, when heating body 3 heats glass kettle body 1, the temperature change of the bottom surface of glass kettle body 1 can be directly and rapidly transferred to temperature sensor 5, and different from the traditional heat conduction mode through air or other indirect medium, direct contact ensures that temperature sensor 5 can perceive the temperature of the bottom surface of glass kettle body 1 in real time and accurately, avoids the temperature detection deviation and delay caused by medium thermal resistance.

[0032] The heat source 3 is the heat source, and the heat generated by it is first transferred to the area where the bottom surface of the glass kettle body 1 contacts the heat source 3. The temperature sensor 5 is placed in the assembly notch 4 next to the heat source 3 and is in close contact with the bottom surface of the glass kettle body 1, so that the temperature sensor 5 is in a key position for heat transfer. This design enables the temperature sensor 5 to preferentially detect the temperature change of the bottom surface of the glass kettle body 1 caused by the heat source 3, thereby providing the temperature control system with the most timely and accurate temperature information, so as to adjust the heating power in time and realize precise temperature control. In addition, the assembly notch 4 formed by the hollow setting of the heat source 3 not only provides a suitable installation position for the temperature sensor 5, but also takes into account the structure and heat distribution characteristics of the heat source 3 itself. The hollow part can reduce the heat radiation interference of the heat source 3 on the temperature sensor 5, while ensuring that there is enough space around the temperature sensor 5 for heat exchange.

[0033] In summary, the temperature sensor 5 is close to the bottom surface of the glass kettle body 1 and is located in the assembly notch 4 near the heating element 3. It can quickly detect the sharp rise in the temperature of the bottom surface of the glass kettle body 1 when the kettle is dry-burning without water. Because in the case of dry-burning, heat cannot be absorbed by water, and the temperature of the bottom surface of the glass kettle body 1 will rise rapidly. The temperature sensor 5 can sense this change in the first time. Compared with the traditional installation method, this design greatly shortens the dry-burning detection time, can trigger the anti-dry-burning protection mechanism in time, stop heating, and effectively avoid damage to the glass kettle body 1 due to long-term dry-burning, reducing the occurrence of safety accidents such as fire hazards; based on direct contact temperature detection, the temperature sensor 5 can accurately obtain the temperature data of the bottom surface of the glass kettle body 1, avoiding misjudgment due to indirect measurement or local temperature differences. During normal use, even if When the water level in the kettle is low or unevenly distributed, the temperature sensor 5 can also accurately determine whether it is in a dry-burning risk state based on the actual temperature of the bottom of the glass kettle body 1. This reliable anti-dry-burning judgment improves the safety of the electric kettle, allowing users to feel more at ease during use, and reduces the anxiety and potential safety risks caused by worrying about dry-burning; because the temperature sensor 5 is in close contact with the bottom of the glass kettle body 1, it can directly sense the temperature changes of the glass kettle body 1, avoiding the errors caused by indirect measurement, so that the actual temperature of the water in the kettle can be accurately measured, providing accurate temperature data for the temperature control system. Whether in the heating process or the insulation stage, accurate power adjustment can be performed based on real-time and accurate temperature information to ensure that the water temperature is always maintained within the range set by the user, meeting the precise requirements of different beverages for brewing water temperature.

[0034] In the embodiment of the utility model, the lower end periphery of the glass kettle body 1 is covered with a flexible member 6, the lower end of the flexible member 6 extends to form an abutting block 7 which is connected to the assembly gap 4, and the temperature sensor 5 is located between the abutting block 7 and the glass kettle body 1 and is tightly attached to the bottom surface of the glass kettle body 1 through the abutting block 7.

[0035] The flexible member 6 covers the lower end periphery of the glass kettle body 1 and has certain elasticity and compressibility, when the glass kettle body 1 is fixedly connected to the heating base 2, the flexible member 6 can compensate the slight gap or unevenness between the glass kettle body 1 and the heating base 2 due to manufacturing tolerance through its own deformation, the abutting block 7 as the extension of the flexible member 6 can apply appropriate pressure to the temperature sensor 5 according to the actual assembly condition in the fixed connection state, so as to ensure that the temperature sensor 5 is tightly attached to the bottom surface of the glass kettle body 1 and is not affected by the manufacturing and assembly tolerance.

[0036] In the use process of the electric kettle, the glass kettle body 1 and the heating base 2 will expand and contract due to heating, although they are fixedly connected, the thermal expansion coefficients of different materials are different, which may cause the relative displacement or stress change between the bottom surface of the glass kettle body 1 and the structure in the heating base 2, the existence of the flexible member 6 can play a buffering and adjusting role, when heated and expanded, the flexible member 6 can be compressed to absorb part of the expansion stress and prevent excessive extrusion or damage to the temperature sensor 5, when cooled and contracted, the flexible member 6 can rebound to maintain the stable contact pressure of the temperature sensor 5, the abutting block 7 always follows the deformation of the flexible member 6 in this process, so as to ensure that the temperature sensor 5 is in good contact with the bottom surface of the glass kettle body 1 to adapt to the changes caused by thermal expansion and contraction.

[0037] In the fixed connection structure, the installation stability of the temperature sensor 5 is particularly important, the abutting block 7 is connected to the glass kettle body 1 through the flexible member 6, the position and structure design of the abutting block 7 can accurately position the temperature sensor 5 in the assembly gap 4 and apply stable pressure, the design principle is similar to that of an elastic clamp, the temperature sensor 5 is fixed in the appropriate position through the flexible force, so as to avoid displacement or loosening of the temperature sensor 5 due to vibration, external force or long-term use after the glass kettle body 1 and the heating base 2 are fixedly connected, so as to ensure that the temperature sensor 5 can continuously and accurately detect the temperature change of the bottom surface of the glass kettle body 1.

[0038] The flexible member 6 can be a silica gel member, the temperature sensor 5 can be a thin film temperature sensor 5, and the fixing mode of the glass kettle body and the heating base 2 can be fixed through corresponding connecting members such as hoops or other modes.

[0039] In the embodiment of the utility model, the inner side of the heating base 2 is provided with a support frame 8, and the bottom of the glass kettle body 1 is supported on the support frame 8.

[0040] The support frame 8 abuts against the flexible piece 6, and the inner side of the support frame 8 extends to form an abutting part 9 for supporting the abutting block 7.

[0041] The support frame 8 installed along the inner side of the heating base 2 mainly serves to bear the glass kettle body 1. When the glass kettle body 1 is placed on the heating base 2, the bottom of the glass kettle body 1 is supported on the support frame 8. The support frame 8 is usually designed to have certain strength and stability, and can bear the weight of the glass kettle body 1 and various external forces that may be received during use, such as impact force during pouring water, etc. It provides a stable support platform for the glass kettle body 1, and ensures that the kettle body will not be unstable due to its own weight or external interference during heating and use.

[0042] The support frame 8 abuts against the flexible piece 6. This design enables the flexible piece 6 to receive the supporting reaction force of the support frame 8 when it is subjected to certain pressure. When the glass kettle body 1 is installed on the heating base 2, the flexible piece 6 will be subjected to extrusion by the kettle body. The presence of the support frame 8 can balance this extrusion force, preventing the flexible piece 6 from being excessively deformed or damaged. At the same time, the abutting part 9 formed by the inner side of the support frame 8 supports the abutting block 7, providing a stable support point for the abutting block 7. When the abutting block 7 tightly contacts the bottom surface of the glass kettle body 1, it needs sufficient support force to maintain this close contact state. The role of the abutting part 9 is to provide this support force, so that the abutting block 7 can effectively play its function, ensuring good contact between the temperature sensor 5 and the bottom surface of the kettle body.

[0043] In the embodiment of the utility model, assembly groove 10 is opened along the end surface of abutting block 7, temperature sensor 5 is embedded in assembly groove 10, wherein, the temperature sensor 5's temperature sensing end at least partially exposes to the outside of assembly groove 10 and contacts the bottom surface of glass kettle body 1.

[0044] The assembly groove 10 opened on the end surface of the abutting block 7 provides a clear installation position for the temperature sensor 5. When the temperature sensor 5 is installed on the abutting block 7, the assembly groove 10 can play the role of precise positioning, ensuring that the temperature sensor 5 can be accurately placed at the predetermined position corresponding to the bottom surface of the glass kettle body 1. This positioning function is crucial for ensuring good contact between the temperature sensor 5 and the bottom surface of the kettle body and accurately measuring the temperature. Through the limitation of the assembly groove 10, the temperature sensor 5 will not be offset or misaligned during installation, thereby improving the precision and consistency of product assembly.

[0045] The temperature sensing end of the temperature sensor 5 is at least partially exposed to outside of the assembly groove 10 and is in contact with the bottom surface of the glass kettle body 1, so as to realize direct contact type temperature detection.

[0046] In the embodiment of the utility model, the inside of the flexible part 6 is packaged with a water level sensor 11, so that the water level sensor 11 is located at the outer circumferential side of the bottom of the glass kettle body 1.

[0047] The water level sensor 11 is packaged at the inside of the flexible part 6 and located at the outer circumferential side of the bottom of the glass kettle body 1, mainly considering the accuracy and comprehensiveness of water level detection. In the electric kettle, the water will produce convection and evaporation and other phenomena during the heating process, and the change of water level is not uniform. The water level sensor 11 is placed at the outer circumferential side of the bottom, which can more comprehensively perceive the change of water level. Because the flow and evaporation of water in the kettle bottom will first produce certain changes in the edge area, the water level sensor 11 at the outer circumferential side can detect these changes earlier, thereby providing more timely water level information for the user.

[0048] The water level sensor 11 is packaged in the flexible part 6, which is based on the characteristics and protection of the flexible part 6. The flexible part 6 has certain flexibility and elasticity, and can adapt to the relative displacement and deformation between the kettle and the heating base 2. Packaging the water level sensor 11 in the flexible part 6 can play a buffering and protection role, reducing the influence of external vibration, impact and other factors on the water level sensor 11. At the same time, the flexible part 6 can also play a sealing and waterproof role, preventing water from entering the inside of the water level sensor 11 and damaging the sensor element, ensuring the normal work and long-term stability of the water level sensor 11.

[0049] In the embodiment of the utility model, the heating body 3 is in plane butt joint with the bottom surface of the glass kettle body 1, so that the heating body 3 is in plane heating.

[0050] The design of the heating body 3 in plane butt joint with the bottom surface of the glass kettle body 1 is to maximize the contact area between the heating body 3 and the bottom surface of the kettle. According to the basic principle of heat conduction, the efficiency of heat transfer is proportional to the contact area. When the heating body 3 is in close contact with the bottom surface of the kettle in the form of a plane, a larger heat conduction surface can be formed, and heat can be more uniformly and efficiently transferred from the heating body 3 to the glass kettle body 1 and then to the liquid in the kettle. This large-area heat conduction method is similar to uniformly spreading heat on the bottom of the kettle, reducing the possibility of local overheating.

[0051] The glass kettle body 1, the heating base 2 or the external power connection device is provided with a main controller electrically connected with the temperature sensor 5 and the water level sensor 11.

[0052] The main controller is the core control unit of the whole system, and the design principle of being electrically connected with the temperature sensor 5 and the water level sensor 11 is to realize centralized collection and processing of the information of the two key sensors;

[0053] The main controller can be located at the handle position of the glass kettle body 1, or a power connection base coupled with the heating base 2 and connected with power.

[0054] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced in the present application.

Claims

1. A precise temperature-controlled all-glass kettle, characterized in that: It includes a glass kettle body, the bottom of which is connected to a heating base, a heating element tightly attached to the bottom of the glass kettle body is arranged in the heating base, one side of the heating element is hollowed out to form an assembly notch, a temperature sensor is arranged in the assembly notch, and the temperature sensor is tightly attached to the bottom of the glass kettle body.

2. A precise temperature-controlled all-glass kettle according to claim 1, characterized in that: A flexible part is covered along the circumference of the lower end of the glass pot body, and an abutment block is extended from one side of the lower end of the flexible part to dock with the assembly notch. The temperature sensor is located between the abutment block and the glass pot body, and the temperature sensor is tightly attached to the bottom surface of the glass pot body through the abutment block.

3. The all-glass kettle with precise temperature control according to claim 2, characterized in that: A support frame is installed along the inner side of the heating base, and the bottom of the glass pot body is supported on the support frame; The support frame abuts against the flexible component, and an abutting portion extending from the inner side of the support frame supports the abutting block.

4. A precise temperature-controlled all-glass kettle according to claim 2 or 3, characterized in that: An assembly groove is opened along the end surface of the abutment block, and the temperature sensor is embedded in the assembly groove, wherein the temperature sensing end of the temperature sensor is at least partially exposed outside the assembly groove and connected to the bottom surface of the glass pot body.

5. The all-glass kettle with precise temperature control according to claim 2, characterized in that: A water level sensor is encapsulated on the inner side of the flexible member so that the water level sensor is located on the outer peripheral side of the bottom of the glass pot body.

6. The all-glass kettle with precise temperature control according to claim 1, characterized in that: The heating element is connected to the bottom surface of the glass pot body in a plane so that the heating element generates heat in a planar manner.

7. The all-glass kettle with precise temperature control according to claim 5, characterized in that: The glass kettle body, the heating base or the external power connection device is provided with a main controller electrically connected to the temperature sensor and the water level sensor.

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