Thick-film three-dimensional heating low-noise teakettle

Abstract

The utility model discloses a thick-film three-dimensional heating low-noise teakettle, which comprises an inner container, an outer container and a control device, a thick-film heating body is arranged at least at the lower part of the outer wall of the inner container, the installation position of the thick-film heating body is fully covered, and a temperature control switch is arranged at the position close to the thick-film heating body. The outer container is fixedly arranged on the periphery of the inner container, the control device is electrically connected with the temperature control switch and the thick film heating body, a traditional bottom heating mode is changed, heat transfer of the side wall from outside to inside is achieved, in the heating process, the peripheral temperature of liquid is high, the middle temperature of the liquid is low, and therefore water with the low temperature can sink in a certain position; water with high temperature can move towards the middle position, smooth water circulation is achieved, bubbles generated by water accumulation at the heating position are avoided, noise can be greatly reduced, and water scale can be reduced in the process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the kettle technical field, specifically a thick film three -dimensional heating low noise water kettle. BACKGROUND

[0002] The market now water kettle heating mode is with cast aluminum heating disc technology, because the temperature produced is very high, the temperature of the bottom and the temperature of the upper part have greater temperature difference in the process of boiling, produce a large number of bubbles and violent disturbance, thereby produce a large number of noise, therefore, the three-dimensional heating technology is used to solve the above problems, but the three-dimensional heating technology is mostly IH three-dimensional electromagnetic induction heating, the technical structure volume is too large and cost is high, so this technology has not been popularized in the water kettle industry. SUMMARY

[0003] The utility model discloses a thick film three -dimensional heating low noise water kettle to solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A thick film three -dimensional heating low noise water kettle, including inner container, outer container and control device, the inner container is installed at least in its outer wall lower part position thick film heating element, the thick film heating element installation position full coverage, and the position close to thick film heating element is installed temperature control switch, the outer container solid is established in the outer periphery of inner container, the control device is electrically connected with temperature control switch box thick film heating element.

[0006] Further technical scheme, the threshold value of temperature control switch is 110 DEG C-130 DEG C.

[0007] Further technical scheme, the inner wall of inner container is concave and forms a detent, and the temperature control switch is installed in the detent.

[0008] Further technical scheme, temperature or / and water level sensor is installed in the inner chamber of inner container and is electrically connected with control device.

[0009] Further technical scheme, still include heat shield, the heat shield is located in the outer periphery of thick film heating body, and is connected with the outer wall of inner container.

[0010] Further technical scheme, the outer container includes shell one and shell two, the shell one is connected with the inner container above the thick film heating body, the shell two covers thick film heating body, and covers the lower part of inner container.

[0011] Further technical scheme, the shell one and the inner container form vacuum heat insulation layer.

[0012] In a further technical solution, an installation space is formed at the bottom between the inner liner and the outer liner, and the control device includes an upper coupler, which is fixed in the installation space.

[0013] The beneficial effects of this utility model are:

[0014] The structure of this invention can increase the heating area, allowing the liquid to be heated better and faster. Secondly, it changes the traditional bottom heating method, realizing heat transfer from the outside to the inside of the side wall. During the heating process, the temperature of the outer periphery of the liquid is relatively hot, while the temperature in the middle is relatively low. The lower-temperature water can sink to a certain position, while the higher-temperature water can move to the middle position, realizing unobstructed water circulation and avoiding water accumulation at the heating position, which can generate bubbles. This can greatly reduce noise and also reduce the formation of scale.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] Fig. 1 : A three-dimensional structural diagram of this utility model.

[0017] Fig. 2 : Bottom structure diagram of this utility model.

[0018] Fig. 3 : A three-dimensional cross-sectional view of this utility model.

[0019] Reference numerals: 1-Inner liner, 11-Card slot, 2-Outer liner, 21-Shell 1, 22-Shell 2, 23-Vacuum insulation layer, 3-Control device, 41-Thick film heating element, 42-Insulation cover, 5-Temperature control switch, 6-Sensor. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please refer to Figs. 1-3 ;

[0022] The kettle of this utility model uses a thick-film heating element 41 for heating, aiming to achieve three-dimensional heating at low cost. Specifically, it includes an inner liner 1, an outer liner 2, and a control device 3. In this embodiment, the inner liner 1 is made of metal, while the material of the outer liner 2 is not limited, but preferably also made of metal, which can further enhance the overall texture of the kettle. The control device 3 is used to power necessary electronic components. In one embodiment, an installation space is formed at the bottom between the inner liner 1 and the outer liner 2, and the control device 3 is fixed within the installation space. The control device 3 is a single unit and inseparable from the kettle body. In another embodiment, the control device 3 includes an upper coupler and a control base. The upper coupler is fixed in the installation space, and the control base is located externally, with a lower coupler used in conjunction with the upper coupler. Alternatively, magnetic induction can be used to achieve power transmission. Therefore, there are many implementations of the control device 3, as long as power transmission can be achieved, no specific limitation is made here.

[0023] Furthermore, a thick-film heating element 41 is installed at least on the lower part of the outer wall of the inner liner 1. The lower part refers to the position of 1 / 4 to 1 / 2 of the height of the inner liner 1, and the installation position of the thick-film heating element 41 is fully covered. Assuming that the inner liner 1 is cylindrical, the thick-film heating element 41 is arranged along the outer periphery of the inner liner 1. In addition, a temperature control switch 5 is installed near the thick-film heating element 41. For example, the thick-film heating element 41 has a clearance, and the temperature control switch 5 is installed in the clearance and fits against the inner liner 1. The aforementioned temperature control switch 5 is electrically connected to the thick-film heating element 41 and the control device 3.

[0024] The thick-film heating element 41 used in this embodiment is mainly produced by printing insulating media, conductor materials, heating resistors, protective media, and other materials on a substrate using a thick-film screen printing process, followed by high-temperature sintering. The thick-film heating element 41 is mainly divided into two types: ceramic heating elements and metal heating elements. In this embodiment, a planar metal heating element is used. The metal heating element is mainly made of stainless steel, but other types include titanium alloy heating tubes and nickel-based alloy heating tubes. The thick-film heating element 41 is fixed to the outer wall of the inner liner 1 by welding, so that it can make full contact with the side of the inner liner 1 and transfer heat to it.

[0025] In addition, multiple thick-film heating elements 41 can be arranged from top to bottom on the outer surface of the inner liner 1 to completely cover the side wall of the inner liner 1, thereby achieving segmented heating and reducing noise.

[0026] When water needs to be boiled, the thick-film heating element 41 starts working, transferring heat to the inner liner 1 to heat the water. During this process, the temperature control switch 5 constantly monitors the temperature of the side wall of the inner liner 1. Preferably, the temperature control switch 5 has a threshold of 110℃-130℃. The temperature control switch 5 prevents the thick-film heating element 41 from transferring too much heat to the inner liner 1, and also helps prevent dry burning. If there is no water in the inner liner 1, the heat transferred by the thick-film heating element 41 to the inner liner 1 will reach 150℃. At this time, the temperature control switch 5 can directly monitor the temperature of the inner liner 1, thereby disconnecting the power supply to prevent dry burning.

[0027] Current research has found that the noise generated during the boiling process mainly comes from the bursting of bubbles. The current bottom heating method results in the water at the bottom near the heating plate being hotter, while the water temperature above is relatively low, creating a huge temperature difference. This makes water circulation difficult, causing water to accumulate at the bottom and generate bubbles, which burst as they rise.

[0028] In this embodiment, the thick film heating element 41 is vertical. Firstly, it can increase the heating area, allowing the liquid to be heated better and the heating speed to be faster. Secondly, it changes the traditional bottom heating method, realizing heat transfer from the outside to the inside of the side wall. During the heating process, the temperature of the outer periphery of the liquid is relatively hot, while the temperature in the middle is relatively low. The lower temperature water can sink to a certain position, while the higher temperature water can move to the middle position, realizing unobstructed water circulation and avoiding water accumulation at the heating position to generate bubbles. This can greatly reduce noise and also reduce the formation of scale in the process.

[0029] In this embodiment of the utility model, the outer wall of the inner liner 1 is recessed to form a locking position 11, and the temperature control switch 5 is installed in the locking position 11, which can fully contact the side wall of the kettle body and better detect temperature changes.

[0030] In addition, a temperature and / or water level sensor 6 is installed in the inner cavity of the inner tank 1 and is electrically connected to the control device 3. Specifically, the temperature sensor 6 and the water level sensor 6 can be set separately, or they can be set simultaneously, or they can be set as a combination, etc. This design can detect the internal water level and also play the role of preventing dry burning.

[0031] Preferably, a buzzer can be installed in the control device, or an external automatic water filling device can be installed to link with the water level sensor 6. When the water level is low, a buzzer will be triggered to stop heating and prompt the user to add water. Alternatively, the kettle can be filled with water using an automatic water filling device, which can also prevent dry burning.

[0032] This also includes a heat insulation cover 42, which is located on the outer periphery of the thick film heating element 41 and connected to the outer wall of the inner liner 1. Of course, there is a gap between the heat insulation cover 42 and the thick film heating element 41, and the two do not contact each other, which can reduce the heat transfer of the thick film heating element 41 and achieve the effect of heat preservation. There is also a gap between the heat insulation cover 42 and the outer liner 2 to prevent the outer liner 2 from overheating and scalding the user.

[0033] In this embodiment, the outer liner 2 includes a first shell 21 and a second shell 22. The first shell 21 is connected to the inner liner 1 above the thick film heating element 41, and the second shell 22 covers the rest of the inner liner 1. The split structure allows for easier installation of the thick film heating element 41 and the control device 3. Preferably, a vacuum insulation layer 23 is formed between the first shell 21 and the inner liner 1. In addition to preventing scalding, it also has a heat preservation effect. At the same time, the heat preservation effect of the thick film heating element 41 ensures that the entire outer wall of the inner liner 1 is within the heat preservation layer, preventing excessive heat loss.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thick-film three-dimensional heating low-noise kettle, comprising an inner liner (1), an outer liner (2), and a control device (3), characterized in that: The inner liner (1) has a thick film heating element (41) installed at least on the lower part of its outer wall. The installation position of the thick film heating element (41) is fully covered, and a temperature control switch (5) is installed near the thick film heating element (41). The outer liner (2) is fixed on the outer periphery of the inner liner (1). The control device (3) is electrically connected to the temperature control switch (5) and the thick film heating element (41).

2. The thick-film three-dimensional heating low-noise kettle according to claim 1, characterized in that: The threshold of the temperature control switch (5) is 110℃-130℃.

3. The thick-film three-dimensional heating low-noise kettle according to claim 1, characterized in that: The inner liner (1) has a recessed outer wall forming a locking position (11), and the temperature control switch (5) is installed in the locking position (11).

4. A thick-film three-dimensional heating low-noise kettle according to claim 1 or 3, characterized in that: A temperature and / or water level sensor (6) is installed in the inner cavity of the inner liner (1) and is electrically connected to the control device (3).

5. The thick-film three-dimensional heating low-noise kettle according to claim 1, characterized in that: It also includes a heat shield (42), which is located on the outer periphery of the thick film heating element (41) and connected to the outer wall of the inner liner (1).

6. A thick-film three-dimensional heating low-noise kettle according to claim 1 or 5, characterized in that: The outer shell (2) includes a first shell (21) and a second shell (22). The first shell (21) is connected to the inner shell (1) above the thick film heating element (41). The second shell (22) covers the thick film heating element (41) and the lower part of the inner shell (1).

7. A thick-film three-dimensional heating low-noise kettle according to claim 6, characterized in that: A vacuum insulation layer (23) is formed between the outer shell (21) and the inner liner (1).

8. The thick-film three-dimensional heating low-noise kettle according to claim 1, characterized in that: The inner liner (1) and the outer liner (2) are located at the bottom between them, forming an installation space. The control device (3) includes an upper coupler, which is fixed in the installation space.

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