Flow guide type thermos capable of preventing boiling overflow

Abstract

The utility model discloses a flow guide type thermos capable of preventing boiling overflow, which comprises a thermos body, the thermos body comprises a thermos body and a thermos cover covering an opening at the upper end of the thermos body, a heating chamber is arranged in the thermos body, and a sealing component is arranged on the side wall, close to a water outlet, in the heating chamber. According to the hot water kettle, the water outlet is automatically kept in a closed state when the whole structure is in a boiling water state, boiling water is prevented from overflowing from the water outlet, and meanwhile, after water is boiled, even if the water accidentally topples over, the water can be prevented from overflowing from the water outlet. A physical barrier formed by the sealing plate and the kettle cover can also prevent hot water from leaking, the potential safety hazard that children make contact with high-temperature liquid is particularly reduced, and through the synergistic effect of mechanical linkage, temperature control response and a flow guide structure, systematic safety improvement is achieved in the aspects of operation convenience, automatic protection reliability and accident prevention.

Description

Technical Field

[0001] This utility model relates to the field of kettle technology, specifically a flow-guiding kettle that prevents boiling and overflow. Background Technology

[0002] As a small household appliance, the technological development of electric kettles originated from the growing demand for rapidly heating liquids in the early 20th century. Modern electric kettles achieve precise temperature control through bimetallic thermostats or electronic sensors, automatically shutting off the power when the water reaches boiling point. Combined with anti-dry-boil protection devices, this effectively avoids the fire risk caused by dry burning. In recent years, energy-saving design has become a key technological focus. Some products adopt surround heating film technology to shorten heating time and introduce adjustable temperature modes to suit different beverage preferences. With the development of IoT technology, smart electric kettles with remote control, water temperature display, and energy consumption monitoring functions are gradually entering the market.

[0003] As described in the published patent CN216602483U, "An electric kettle that prevents scalding and overflow," during the use of an electric kettle, users often fill it too full, causing the hot water to overflow during heating. The overflowing water can easily cause scalding. Furthermore, if the electric kettle is placed at a low position, children may unknowingly knock it over, causing hot water to spill and scald them.

[0004] In summary, during the use of an electric kettle, boiling water can easily overflow from the spout, causing burns to the user. There is also a risk that children may accidentally knock over the kettle, causing the hot water to spill and burn them. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flow-guiding kettle that prevents boiling over includes a kettle body, which includes a kettle body and a lid that is provided on the upper opening of the kettle body.

[0008] The kettle body is equipped with a heating chamber. A sealing component is installed on the side wall of the heating chamber near the water outlet. A pressure component that abuts and cooperates with the sealing component is installed above the water outlet in the heating chamber.

[0009] A vertical first mounting groove is provided on the side wall of the heating chamber near the water outlet, and the sealing component includes a sealing plate that elastically expands and contracts within the first mounting groove;

[0010] A vertical pressing mounting hole is provided above the water outlet. The pressing assembly includes a pressing rod that slides within the pressing mounting hole. A pressing through hole is provided on the inner bottom surface of the pressing mounting hole. The lower end of the pressing rod passes through the pressing through hole and abuts against the upper end of the sealing plate.

[0011] A second mounting groove is provided on the side wall of the pressing mounting hole, and a limiting component is installed in the second mounting groove to limit and engage the pressing rod.

[0012] The limiting component includes a limiting stop bar, which elastically expands and contracts within the second mounting groove. One end of the limiting stop bar extends out of the second mounting groove and engages with the pressing rod. A through-hole jacking mounting groove is formed on the side wall of the second mounting groove, and a temperature-controlled jacking component is installed inside the jacking mounting groove. An abutting boss is formed on the side wall of the limiting stop bar, and the abutting boss engages with the temperature-controlled jacking component.

[0013] An anti-overflow groove is provided on the side wall of the heating chamber, and an arc-shaped guide part that cooperates with the anti-overflow groove is provided on the lower end face of the lid.

[0014] As a further embodiment of this utility model: a jacking spring is sleeved on the limiting stop rod, one end of the jacking spring abuts against the inner bottom surface of the second mounting groove, and the other end of the jacking spring abuts against the abutting boss. The temperature control jacking component is fixed on the left wall of the jacking mounting groove, and the upper end of the right wall of the temperature control jacking component abuts against the left wall of the abutting boss. The jacking mounting groove is connected to the heating chamber, and the lower wall and right wall of the temperature control jacking component are exposed in the heating chamber.

[0015] As a further embodiment of this utility model: the temperature control actuator includes a nickel-titanium shape memory alloy.

[0016] As a further embodiment of this utility model: the arc-shaped guide portion includes a first arc-shaped guide portion close to the second mounting groove and a second arc-shaped guide portion connected to the first arc-shaped guide portion. The curvature of the second arc-shaped guide portion is less than that of the first arc-shaped guide portion, and the rear end of the second arc-shaped guide portion is located at the upper end of the anti-overflow groove.

[0017] As a further embodiment of this utility model: the high curvature regions of the first arc-shaped guide section and the high curvature regions of the second arc-shaped guide section are respectively provided with upward-penetrating venting valve holes.

[0018] As a further embodiment of this utility model: the upper end of the side wall of the overflow tank is provided with a wide-mouth collection plate that bends and extends into the heating chamber, and a water level sensor is installed on the wide-mouth collection plate.

[0019] As a further embodiment of this utility model: the lower end of the sealing plate is provided with a first elastic member, the upper end of the first elastic member abuts against the lower end surface of the sealing plate, and the lower end of the first elastic member abuts against the inner bottom surface of the first mounting groove.

[0020] A second elastic element is sleeved on the pressing rod, and a first limiting protrusion is formed on the side wall of the pressing rod. The lower end of the second elastic element abuts against the inner bottom surface of the pressing mounting hole, and the upper end of the second elastic element abuts against the first limiting protrusion.

[0021] As a further embodiment of this utility model: the lower end of the pressing rod is formed with a second limiting boss, and the second limiting boss abuts against the lower opening of the pressing mounting hole.

[0022] As a further embodiment of this utility model, an electric heating element is provided on the inner bottom surface of the kettle body.

[0023] As a further embodiment of this utility model: the upper end of the sealing plate is provided with an arc-shaped water outlet that matches the water outlet, and sealing silicone parts that are sealed and matched with the first mounting groove are respectively fixed on the front and rear side walls of the sealing plate.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] This utility model kettle automatically keeps the spout closed when boiling water is present, preventing overflow. Even in the event of accidental tipping, the physical barrier formed by the sealing plate and the lid prevents hot water leakage, significantly reducing the safety hazard of children coming into contact with hot liquids. This solution achieves a systematic improvement in safety in terms of ease of operation, reliability of automatic protection, and accident prevention through the synergistic effect of mechanical linkage, temperature control response, and flow guiding structure. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural view of the present invention;

[0027] Figure 2 This is a front view of the present invention;

[0028] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0029] Figure 4 yes Figure 3 A partial view at point B in the middle;

[0030] Figure 5 yes Figure 3 A partial view at point C;

[0031] The reference numerals and names in the figure are as follows:

[0032] Kettle body - 100, kettle body - 101, kettle lid - 102, heating chamber - 103, water outlet - 104, sealing assembly - 106, pressing assembly - 107, first mounting groove - 108, sealing plate - 109, pressing mounting hole - 110, pressing rod - 111, pressing through hole - 112, second mounting groove - 113, limiting assembly - 114, limiting stop bar - 115, actuating mounting groove - 116, temperature control actuating component - 11 7. Abutting boss-118, anti-overflow groove-119, arc-shaped guide part-120, pushing spring-121, first arc-shaped guide part-123, second arc-shaped guide part-124, vent valve hole-125, wide-mouth collection plate-126, water level sensor-127, first elastic element-128, second elastic element-129, first limiting protrusion-130, second limiting boss-131, electric heating element-132, sealing silicone element-133. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figure 1-5 A type of kettle designed to prevent boiling over, comprising a kettle body 100, the kettle body 100 including a kettle body and a kettle lid with an opening at the upper end of the kettle body;

[0035] The kettle body is equipped with a heating chamber. A sealing component is installed on the side wall of the heating chamber near the water outlet. A pressure component that abuts and cooperates with the sealing component is installed above the water outlet in the heating chamber.

[0036] A vertical first mounting groove is provided on the side wall of the heating chamber near the water outlet, and the sealing component includes a sealing plate that elastically expands and contracts within the first mounting groove;

[0037] A vertical pressing mounting hole 110 is provided above the water outlet. The pressing assembly includes a pressing rod 111 that slides within the pressing mounting hole 110. A pressing through hole 112 is provided on the inner bottom surface of the pressing mounting hole 110. The lower end of the pressing rod 111 passes through the pressing through hole 112 and abuts against the upper end of the sealing plate.

[0038] A second mounting groove 113 is provided on the side wall of the pressing mounting hole 110. A limiting component 114 is installed in the second mounting groove 113 to limit and engage the pressing rod 111.

[0039] The limiting component 114 includes a limiting stop 115, which elastically expands and contracts within the second mounting groove 113. One end of the limiting stop 115 extends out of the second mounting groove 113 and engages with the pressing rod 111. A through-hole jacking mounting groove 116 is formed on the side wall of the second mounting groove 113, and a temperature-controlled jacking member 117 is installed in the jacking mounting groove 116. An abutting boss 118 is formed on the side wall of the limiting stop 115, and the abutting boss 118 engages with the temperature-controlled jacking member 117.

[0040] An anti-overflow groove 119 is provided on the side wall of the heating chamber, and an arc-shaped guide part 120 that cooperates with the anti-overflow groove 119 is provided on the lower end face of the lid.

[0041] During the water boiling preparation stage, when the user presses down the lever 111, its end is rigidly linked to force the sealing plate to overcome the spring resistance and move downward, so that the water outlet is in an open state. At the same time, the limit stop 115 is pushed by the transverse spring and embedded in the slot on the side wall of the lever 111, forming a stable mechanical locking structure. This ensures that the sealing plate remains open in the early stage of boiling water, preventing the sealing plate from closing accidentally due to pressure fluctuations inside the kettle or human accidental contact. At the same time, this locking process does not require continuous force.

[0042] When the water boils, the temperature control actuating component 117 (such as using a bimetallic strip or shape memory alloy material) deforms and displaces due to heat. The temperature control actuating component 117 precisely acts on the abutting boss 118 on the side wall of the limit stop 115, pushing the limit stop 115 laterally out of the slot of the pressing rod 111 and releasing the mechanical lock. At this time, under the strong rebound of the return spring below, the sealing plate rises vertically with a millisecond-level response speed. The silicone sealing ring on its edge forms an interference fit with the inner wall of the water outlet, instantly completing physical isolation before the boiling water gushes out. This process relies entirely on thermal energy triggering and does not require electrical intervention, which avoids the aging risk of traditional electronic control components and ensures that the sealing action can still be reliably performed in the event of a sudden power outage.

[0043] To address the problem of boiling overflow, the curved guide section 120 at the bottom of the kettle lid adopts a curved surface design, which, together with the annular anti-overflow groove 119 on the side wall of the kettle body, forms a directional flow channel: when the water boils violently, the foam and splashing droplets first come into contact with the curved surface, and are guided by the curvature of the surface to change their direction of movement, changing from vertical rising to horizontal diffusion along the tangential direction, and are finally guided into the anti-overflow groove 119 for temporary storage; this design changes the traditional planar obstruction to dynamic guidance.

[0044] Regarding accidental spill protection, especially in homes with children or pets, accidentally spilling freshly boiled water can cause serious scalding. This new kettle effectively avoids this problem. When the water boils, the sealing plate forms a normally closed seal with the spout due to the pre-tensioning force of the spring. Even if the kettle is impacted or tipped over, the lateral pressure generated by the internal liquid due to gravity further strengthens the fit between the sealing plate and the spout, creating a self-reinforcing sealing effect. In existing technologies, a snap-fit ​​structure is generally provided between the lid and the body to prevent the lid from loosening and causing leakage.

[0045] In terms of system coordination, the solution organically integrates three major modules: mechanical transmission (linkage between the downward pressure rod and the limit stop 115), thermal energy sensing (deformation of the temperature control top moving part 117), and fluid control (arc-shaped flow guide + anti-overflow groove 119). During the water boiling process, each component automatically connects in the logical sequence of "pre-locking - heat triggering - rapid sealing - overflow guidance". While ensuring the integrity of the boiling function, it seals and protects the high-risk window period of the boiling stage, thereby improving safety.

[0046] In one embodiment, when it is necessary to pour boiling water, one hand needs to press down the pressing rod 111 to move the sealing plate down, and the other hand needs to pour the water. When the pressing rod 111 is released, the sealing plate will automatically spring back. Therefore, pouring boiling water requires the cooperation of both hands to avoid accidental contact, especially the unintentional contact by children and pets, which may cause the kettle to tip over and the boiling water to spill.

[0047] In one embodiment, when the water temperature drops to room temperature, the pressing rod 111 is pressed down. Under the limiting action of the limiting rod 115, the sealing plate can be kept in a continuously pressed state, thereby keeping the water outlet continuously open for convenient daily drinking water use.

[0048] This utility model kettle automatically keeps the spout closed when the water is boiling, preventing boiling water from overflowing. In the event of accidental tipping, the physical barrier formed by the sealing plate and the lid can also prevent hot water leakage, significantly reducing the safety hazard of children coming into contact with hot liquids. This solution achieves a systematic safety improvement in terms of ease of operation, reliability of automatic protection, and accident prevention through the synergistic effect of mechanical linkage, temperature control response, and flow guiding structure.

[0049] In this embodiment of the utility model, a jacking spring 121 is sleeved on the limiting stop 115. One end of the jacking spring 121 abuts against the inner bottom surface of the second mounting groove 113, and the other end of the jacking spring 121 abuts against the abutting boss 118. The temperature control jacking member 117 is fixed on the left wall of the jacking mounting groove 116. The upper end of the right wall of the temperature control jacking member 117 abuts against the left wall of the abutting boss 118. The jacking mounting groove 116 is connected to the heating chamber, and the lower wall and right wall of the temperature control jacking member 117 are exposed in the heating chamber.

[0050] One end of the push spring 121 fitted on the limit stop 115 is rigidly abutted against the bottom surface of the second mounting groove 113, and the other end is precisely acted on the side wall of the abutment boss 118, forming an elastic constraint on the limit stop 115. This ensures the stable limit stop of the limit stop 115 and the slot of the pressing rod 111 under normal conditions, and also provides controllable elastic resistance for the temperature control unlocking action.

[0051] The temperature-controlled actuating component 117 is fixed to the left wall of the actuating mounting groove 116 by an embedded installation. The upper end of its right wall forms a surface contact force transmission structure with the left wall of the abutment boss 118. With the through design of the actuating mounting groove 116 and the heating chamber, the lower wall and right wall of the temperature-controlled actuating component 117 are directly exposed to the high-temperature steam environment of the boiling water, which greatly improves the heat transfer efficiency. When the water temperature reaches the threshold, the lateral expansion displacement generated by the temperature-controlled actuating component 117 due to heating is converted into a continuous thrust on the limit stop 115 through the abutment boss 118. During this process, the actuating spring 121 undergoes compression deformation until the limit stop 115 disengages from the locking position of the pressing rod 111. At this time, the sealing plate closes the water outlet instantly in the vertical direction under the drive of the lower spring. During this process, the progressive compression characteristics of the actuating spring 121 can effectively buffer mechanical impact and prevent the deformation of the component caused by instantaneous stress concentration.

[0052] In this embodiment of the present invention, the temperature control actuator 117 comprises a nickel-titanium shape memory alloy;

[0053] Using nickel-titanium shape memory alloy as the core material of the temperature control pusher 117, it can produce the expected deformation when the set phase change temperature is reached (such as 95℃ near the boiling point). By precisely controlling the alloy composition ratio, the right wall of the temperature control pusher 117 can undergo the expected lateral displacement during the boiling stage, and accurately push the abutment boss 118 to achieve limit unlocking.

[0054] Nickel-titanium shape memory alloys possess superelastic properties that allow them to recover their initial shape after cooling, far superior to traditional bimetallic sheet materials. The dense titanium oxide layer formed on the material surface can withstand long-term steam corrosion, resulting in a long service life. In addition, the design of being exposed to the heating chamber shortens the thermal response delay. Through the phase change energy conversion mechanism, this material achieves efficient conversion of thermal energy into mechanical displacement, combining fast response, long life and maintenance-free characteristics.

[0055] In this embodiment of the present invention, the arc-shaped guide portion 120 includes a first arc-shaped guide portion 123 close to the second mounting groove 113 and a second arc-shaped guide portion 124 communicating with the first arc-shaped guide portion 123. The curvature of the second arc-shaped guide portion 124 is less than that of the first arc-shaped guide portion 123, and the rear end of the second arc-shaped guide portion 124 is located at the upper end of the anti-overflow groove 119.

[0056] The arc-shaped guide section 120 is divided into a first arc-shaped guide section 124 with different curvature characteristics. The first arc-shaped guide section 123, which is close to the second mounting groove 113, adopts a high curvature design and forms a steep flow-facing surface with the edge of the lid. This allows the small portion of water vapor mixture that rises vertically during boiling to have better contact with the temperature control top actuator 117, thereby improving the response accuracy of the temperature control top actuator 117.

[0057] The second arc-shaped guide section 124 smoothly connects with the first arc-shaped guide section 123 with a gradually decreasing curvature. Through the gradient change of the curvature radius, it applies a continuous centripetal guiding effect to the fluid, so that the water flow after the primary turning point can spread smoothly along the gradually expanding channel and finally be accurately introduced into the wide-mouth collection area at the upper end of the overflow tank 119.

[0058] Meanwhile, the vertical drop between the end of the second arc-shaped guide section 124 and the upper end of the overflow prevention groove 119 creates a negative pressure diversion effect, accelerating the fluid to leave the guide surface and enter the overflow prevention groove 119. This design achieves full-process overflow control from dynamic interception to static storage through the coupling optimization of fluid mechanics and thermodynamics.

[0059] In this embodiment of the present invention, the high curvature region of the first arc-shaped guide portion 123 and the high curvature region of the second arc-shaped guide portion 124 are respectively provided with an upward through-hole vent valve 125;

[0060] In the high curvature region of the first arc-shaped guide section 123 and the gradually expanding region of the second arc-shaped guide section 124, upward through-hole vent valve holes 125 are respectively opened to form pressure release channels.

[0061] By utilizing the Bernoulli effect, a local low-pressure zone is formed at the orifice of the vent valve 125, guiding the surface vapor and the bottom liquid to flow in stratified layers. This allows the vapor to be discharged vertically through the vent valve 125, while the liquid water, constrained by the guide surface, continues to move towards the overflow prevention tank 119, achieving efficient separation of the gas-liquid two-phase flow. In addition, the upward penetrating direction of the vent valve 125 prevents liquid backflow and blockage, forming a pressure balance closed loop in conjunction with the hydrophobic structure of the overflow prevention tank 119. This scheme achieves a dual breakthrough in overflow control and system reliability through the synergistic effect of dynamic pressure regulation and flow channel optimization.

[0062] In this embodiment of the utility model, the upper end of the side wall of the overflow trough 119 is provided with a wide-mouth collection plate 126 that bends and extends into the heating chamber, and a water level sensor 127 is installed on the wide-mouth collection plate 126.

[0063] The wide-mouth collection plate 126 set at the upper end of the side wall of the overflow tank 119 adopts an arc-shaped structure that bends and extends into the heating chamber. Its opening width and curvature are optimized by fluid dynamics simulation to form a funnel-shaped flow collection area, which can improve the capture efficiency of splashing droplets and foam during boiling.

[0064] The surface of the wide-mouth collection plate 126 is covered with a hydrophobic nano-coating, which reduces the surface tension of the liquid and allows the collected overflow to slide quickly along the plate surface into the anti-overflow tank 119. At the same time, its curved extension design forms a gas-liquid separation interface at the edge of the tank, effectively blocking the interference of steam backflow on the flow path.

[0065] The water level sensor 127 installed on the wide-mouth collection plate 126 adopts the capacitive or optical sensing principle to monitor the changes in the liquid level in the tank in real time. After water is injected into the heating chamber, when the liquid level is detected to exceed the preset safety threshold, the sensor signal will trigger the heating system to perform a power-off operation through the control module, and combined with an audible and visual alarm to remind the user, so as to avoid the user from adding too much water at the beginning and reduce the expected safety risks.

[0066] In this embodiment of the present invention, a first elastic member 128 is provided at the lower end of the sealing plate, the upper end of the first elastic member 128 abuts against the lower end surface of the sealing plate, and the lower end of the first elastic member 128 abuts against the inner bottom surface of the first mounting groove.

[0067] A second elastic element 129 is sleeved on the pressing rod 111. A first limiting protrusion 130 is formed on the side wall of the pressing rod 111. The lower end of the second elastic element 129 abuts against the inner bottom surface of the pressing mounting hole 110, and the upper end of the second elastic element 129 abuts against the first limiting protrusion 130.

[0068] By providing the first elastic element 128, the sealing plate can be elastically extended and retracted within the first mounting groove.

[0069] By providing a second elastic element 129, the downward pressure rod 111 can elastically extend and retract within the downward pressure mounting hole 110.

[0070] By setting the first limiting protrusion 130, the elastic extension and contraction effect of the pressing rod 111 is improved, and the first limiting protrusion is convenient to cooperate with the limiting stop 115 for limiting and abutting.

[0071] In this embodiment of the utility model, the lower end of the pressing rod 111 is formed with a second limiting boss 131, and the second limiting boss 131 abuts and cooperates with the lower end opening of the pressing mounting hole 110.

[0072] Prevent the pressure stop lever from detaching from the pressure mounting hole 110.

[0073] In this embodiment of the utility model, an electric heating element 132 is provided on the inner bottom surface of the kettle body;

[0074] It facilitates the heating of liquids within the heating chamber.

[0075] In this embodiment of the utility model, the upper end of the sealing plate is provided with an arc-shaped water outlet that matches the water outlet, and the front and rear side walls of the sealing plate are respectively fixed with sealing silicone parts 133 that are in a tight fit with the first mounting groove.

[0076] By setting an arc-shaped water outlet, the water pouring process is made smoother. By setting a sealing silicone part 133, the first mounting groove is sealed to protect the first elastic part 128.

[0077] In one embodiment, the lower end of the pressure rod 111 is provided with an m-shaped bend to facilitate mating with the sealing plate.

[0078] 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.

Claims

1. A boil-over-preventing, flow-guiding, hot-water kettle, characterized in that The kettle body (100) comprises a kettle body and a kettle cover arranged on the upper opening of the kettle body; A heating chamber is arranged in the kettle body, a sealing assembly is arranged on the side wall of the heating chamber close to the water outlet, and a pressing assembly abutting with the sealing assembly is arranged above the water outlet in the heating chamber; A vertical first installation slot is arranged on the side wall of the heating chamber close to the water outlet, and the sealing assembly comprises a sealing plate elastically matched in the first installation slot; A vertical pressing installation hole (110) is arranged above the water outlet, the pressing assembly comprises a pressing rod (111) slidingly matched in the pressing installation hole (110), a pressing through hole (112) is arranged on the inner bottom surface of the pressing installation hole (110), the lower end of the pressing rod (111) penetrates downward from the pressing through hole (112) and abuts with the upper end of the sealing plate; A communicating second installation slot (113) is arranged on the side wall of the pressing installation hole (110), and a limiting assembly (114) limiting and abutting with the pressing rod (111) is arranged in the second installation slot (113); The limiting assembly (114) comprises a limiting stop rod (115) elastically matched in the second installation slot (113), one end of the limiting stop rod (115) extends out of the second installation slot (113) and abuts with the pressing rod (111), a top driving installation slot (116) is arranged on the side wall of the second installation slot (113), a temperature control top driving member (117) is arranged in the top driving installation slot (116), an abutting boss (118) is formed on the side wall of the limiting stop rod (115), and the abutting boss (118) abuts with the temperature control top driving member (117); An anti-overflow groove (119) is arranged on the side wall of the heating chamber, and an arc-shaped guide portion (120) matched with the anti-overflow groove (119) is arranged on the lower end surface of the kettle cover.

2. The boil-over preventing, flow-guiding electric kettle according to claim 1, characterized in that, A top driving spring (121) is sleeved on the limiting stop rod (115), one end of the top driving spring (121) abuts with the inner bottom surface of the second installation slot (113), the other end of the top driving spring (121) abuts with the abutting boss (118), the temperature control top driving member (117) is fixed on the left wall surface of the top driving installation slot (116), the right wall upper end of the temperature control top driving member (117) abuts with the left wall of the abutting boss (118), the top driving installation slot (116) is communicated with the heating chamber, and the lower wall and the right wall of the temperature control top driving member (117) are exposed in the heating chamber.

3. The boil-over preventing, flow-guiding electric kettle according to claim 2, characterized in that, The temperature control top driving member (117) comprises a nickel-titanium shape memory alloy.

4. A spout-type hot water kettle preventing boiling over according to any one of claims 1 to 3, characterized in that, The arc-shaped guide portion (120) comprises a first arc-shaped guide portion (123) close to the second installation slot (113) and a second arc-shaped guide portion (124) communicated with the first arc-shaped guide portion (123), the bending degree of the second arc-shaped guide portion (124) is smaller than that of the first arc-shaped guide portion (123), and the rear end of the second arc-shaped guide portion (124) is arranged on the upper end of the anti-overflow groove (119).

5. The boil-over preventing, flow-guiding, thermos of claim 4, wherein, Gas release valve holes (125) penetrating upward are arranged in the high-curvature regions of the first arc-shaped guide portion (123) and the second arc-shaped guide portion (124) respectively.

6. The flow-guided thermokettle capable of preventing boiling overflow according to claim 1 or 2 or 3 or 5, characterized in that, The upper end of the side wall of the anti-overflow groove (119) is provided with a wide-mouth collecting plate (126) which is bent and extends into the warming chamber, and the wide-mouth collecting plate (126) is provided with a water level sensor (127).

7. The boil-over preventing, flow-guiding, thermos of claim 6, wherein, The lower end of the sealing plate is provided with a first elastic member (128), the upper end of the first elastic member (128) is in abutting engagement with the lower end surface of the sealing plate, and the lower end of the first elastic member (128) is in abutting engagement with the inner bottom surface of the first mounting groove. The lower pressing rod member (111) is sleeved with a second elastic member (129), the side wall of the lower pressing rod member (111) is formed with a first limiting protrusion (130), the lower end of the second elastic member (129) is in abutting engagement with the inner bottom surface of the lower pressing mounting hole (110), and the upper end of the second elastic member (129) is in abutting engagement with the first limiting protrusion (130).

8. The boil-over preventing, flow-guiding, thermos, according to claim 7, wherein, The lower end of the lower pressing rod member (111) is formed with a second limiting protrusion (131), and the second limiting protrusion (131) is in abutting engagement with the lower end opening of the lower pressing mounting hole (110).

9. The boil-over preventing, flow-guiding, thermos of claim 8, wherein, The inner bottom surface of the kettle body is provided with an electric heating member (132).

10. The boil-over preventing, flow-guiding, thermos of claim 9, wherein, The upper end of the sealing plate is provided with an arc-shaped water outlet which is matched with the water outlet, and the front and rear side walls of the sealing plate are respectively fixedly provided with sealing silica gel members (133) which are in sealed engagement with the first mounting groove.

Images