A heating spoon

Abstract

This utility model relates to the field of heating spoon technology, and in particular discloses a heating spoon, including a spoon body assembly and a handle assembly used in conjunction with the spoon body assembly. The spoon body assembly includes a spoon head with a blind groove for holding material and a heating element for heating the spoon head. The blind groove for holding material has an inner groove concave surface for contacting the target object to be heated. The handle assembly has a spoon handle with a hollow cavity structure, and a control module electrically connected to the heating element is integrated within the hollow cavity structure. This heating spoon achieves reasonable division of core functions. The spoon body assembly focuses on material holding and heating, while the handle assembly integrates control functions, avoiding component interference and facilitating use. The inner groove concave surface of the blind groove for holding material makes close contact with the target object to be heated, improving the heat transfer efficiency of the heating element. The hollow cavity spoon handle can protect the control module and also reduce heat conduction, preventing burns to the hands, thus combining practicality and safety.

Description

Technical Field

[0001] This utility model relates to the field of heating spoon technology, and in particular discloses a heating spoon. Background Technology

[0002] Currently, many heating spoons on the market suffer from a chaotic integration of functions, with the spoon body and handle functions confused, leading to component interference and heat transfer to the handle, causing burns. Most products lack precise temperature control, resulting in indiscriminate heating and potential overheating hazards. Some heating spoons have poorly designed spoon heads, causing food to spill easily, making cleaning difficult, and uneven heating negatively impacting the user experience. Heating elements are often unstable, have low heat transfer efficiency, and are easily damaged by external environments. The operating units often lack waterproofing, making them prone to malfunction due to liquid seepage in humid kitchen environments. Electrode connections often require precise alignment, making disassembly and cleaning inconvenient. Furthermore, the spoon head easily touches the table surface when placed, causing contamination or burns. Overall, practicality and safety need improvement. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a heating spoon.

[0004] To achieve the above objectives, the present invention provides a heating spoon, comprising a spoon body assembly and a handle assembly used in conjunction with the spoon body assembly. The spoon body assembly includes a spoon head with a blind groove for holding material and a heating element for heating the spoon head. The blind groove for holding material in the spoon head has an inner groove concave surface for contacting the target object to be heated. The handle assembly has a spoon handle with a hollow cavity structure, and a control module electrically connected to the heating element is integrated within the hollow cavity structure.

[0005] This structural design achieves a rational division of the core functions of the heating spoon. The spoon body component focuses on material carrying and heating, while the handle component handles the integrated control functions. The two work together to ensure ease of use while avoiding interference between functional components. The concave inner surface of the material-holding blind groove ensures close contact with the object being heated, allowing the heat generated by the heating element to be transferred to the material more efficiently, improving heating efficiency. The hollow-cavity spoon handle not only properly houses the control module and protects it from external environmental influences but also reduces heat transfer to the handle, preventing burns to the user's hands. This design balances practicality and safety, meeting the basic needs of everyday food heating scenarios.

[0006] Furthermore, the heating spoon also includes a temperature monitoring unit, which has a temperature sensor located on the spoon head of the spoon body assembly. The temperature sensor is electrically connected to the control module to monitor the temperature of the concave surface of the inner groove.

[0007] The addition of a temperature monitoring unit upgrades the heating spoon from "blind heating" to "precise temperature control." The temperature sensor, located directly on the spoon head, accurately captures the temperature of the concave surface of the inner groove in real time. This temperature closely matches the actual temperature of the object being heated, ensuring the reliability of the monitoring data. The sensor is electrically connected to the control module, providing timely feedback of temperature information. When the preset temperature is reached, the control module responds quickly, such as stopping heating or adjusting the heating power, preventing nutrient loss and deterioration of taste due to overheating. It also prevents safety hazards caused by excessively high temperatures, making it particularly suitable for heating temperature-sensitive materials such as breast milk and complementary foods, providing users with a more considerate and safe heating experience.

[0008] Furthermore, the cross-sectional shape of the spoon head is arc-shaped, the longitudinal cross-sectional shape of the spoon head is arc-shaped, and the inner groove concave surface is a smooth inner arc concave surface.

[0009] The scoop head features a curved cross-section and longitudinal section, combined with a smooth inner concave surface, offering several advantages. In terms of material handling, the curved structure better gathers material, reducing spillage during scooping and heating, especially for liquids and pastes, improving stability during use. The smooth inner concave surface, without sharp edges or protrusions, not only facilitates cleaning and prevents food residue from accumulating in crevices and breeding bacteria, ensuring hygiene and safety, but also allows for full contact between the material and the concave surface, resulting in more even heating and preventing spoilage caused by uneven heating. Furthermore, the curved shape is ergonomic, fitting the hand better and enhancing overall user comfort.

[0010] Furthermore, the spoon body assembly has a receiving groove disposed on the spoon head for accommodating the heating element, and a spoon cover that cooperates with the spoon head. The spoon cover is used to cover the receiving groove. The inner groove concave surface is disposed opposite to the receiving groove on both sides of the spoon head. The inner side of the spoon cover is provided with encapsulation ribs that abut against the heating element for encapsulating the heating element in the receiving groove.

[0011] The receiving groove provides a dedicated installation space for the heating element, serving as an initial positioning and protection mechanism to prevent displacement during use and maintain heating efficiency. The spoon lid, working in conjunction with the receiving groove, encloses the heating element internally, isolating it from external dust, moisture, and other impurities, extending its lifespan, and preventing accidental burns from direct exposure. The concave surface of the inner groove is positioned on opposite sides of the receiving groove, allowing heat from the heating element to be transferred more directly to the material-bearing side, reducing heat loss to the spoon lid side and improving heat utilization efficiency. The encapsulation ribs on the inner side of the spoon lid further securely fix the heating element within the receiving groove by pressing against it, ensuring a tight fit between the heating element and the spoon head, resulting in more efficient heat transfer and preventing heating instability caused by a loose heating element.

[0012] Furthermore, the heating element is a flexible heating sheet, which is attached to the bottom surface of the receiving groove.

[0013] Choosing flexible heating elements as the heating element offers significant advantages. The flexible material allows it to better conform to the shape of the container bottom, ensuring close contact regardless of whether the bottom is curved. This ensures even heat transfer to the scoop head, preventing localized overheating or heating dead zones caused by poor contact between the heating element and the bottom, guaranteeing uniform heating of the material. Furthermore, the flexible heating element's soft texture makes installation easier, adapting to different container sizes and reducing installation difficulty. In addition, compared to traditional rigid heating elements, flexible heating elements are less susceptible to damage from vibration and minor impacts, offering greater durability. Their high heating efficiency and rapid temperature rise quickly meet material heating needs, enhancing ease of use.

[0014] Furthermore, the spoon handle is provided with a mounting part, and the mounting part is provided with an operating unit electrically connected to the control module. The operating unit includes a display screen and at least one control button, and the mounting part is provided with waterproof TPE that cooperates with the control button.

[0015] The operating unit design of the spoon handle mounting section allows users to easily control the heating spoon. The display screen clearly shows the current temperature, heating mode, and other information, enabling users to monitor the device status in real time and make corresponding adjustments. At least one control button meets basic operational needs such as power on / off, temperature adjustment, and mode switching. The button layout on the spoon handle conforms to hand grip habits, eliminating the need for additional hand adjustments and enhancing ease of use. The waterproof TPE in the mounting section, combined with the control buttons, effectively prevents water, broth, and other liquids from entering the operating unit, avoiding short circuits and device damage caused by liquid seepage. The TPE material is also soft to the touch, providing a comfortable feel when pressing the buttons, and has good wear resistance, resisting aging and deformation even after long-term use, ensuring the lifespan and safety of the operating unit, making it especially suitable for use in humid environments such as kitchens.

[0016] Furthermore, a flexible heat insulation pad is provided between the heating element and the spoon lid, and the flexible heat insulation pad is used to cover the heating element.

[0017] The flexible heat insulation pad between the heating element and the spoon lid provides multiple layers of protection. First, it effectively blocks heat generated by the heating element from being transferred to the spoon lid, reducing heat loss and allowing more heat to be concentrated in the blind groove of the spoon head, improving heat utilization efficiency and reducing energy consumption. Second, the heat insulation pad prevents the spoon lid from becoming too hot to handle, preventing burns when picking up or touching it, thus improving safety. Third, the flexible heat insulation pad covers the heating element, further protecting it from direct contact between the inside of the spoon lid and the heating element, preventing wear and tear, and also preventing dust and impurities that may be brought in by the spoon lid, extending the lifespan of the heating element. Furthermore, the flexible heat insulation pad is easy to install, fits tightly to the surface of the heating element, ensuring stable heat insulation without affecting the normal operation of the heating element.

[0018] Furthermore, the spoon body assembly is provided with a moving electrode seat and a moving electrode piece inserted on the moving electrode seat, and the handle assembly is provided with a static electrode group, which includes a static electrode seat and a static electrode piece inserted on the static electrode seat. The moving electrode piece and the static electrode piece make contact and conduction when the spoon body assembly and the handle assembly are assembled.

[0019] The design of the moving and stationary electrodes enables a quick and convenient electrical connection between the spoon body assembly and the handle assembly. No complex wiring is required; the user simply assembles the two components, and the moving and stationary electrodes immediately make contact, allowing the control module to power the heating element smoothly, simplifying the usage process. This detachable electrode connection also facilitates the separation of the spoon body assembly and the handle assembly. When the spoon head needs cleaning, disinfection, or even replacement, the spoon body assembly can be removed separately, providing greater flexibility and preventing damage to the handle assembly from water or cleaning agents. Simultaneously, the electrode holder effectively secures and protects the electrode plates, preventing displacement or damage during assembly and use, ensuring the stability and conductivity of the electrode connection, and guaranteeing the normal operation of the heating spoon.

[0020] Furthermore, there are multiple moving electrode plates and multiple stationary electrode plates, with one-to-one correspondence between the moving electrode plates and the stationary electrode plates. The multiple moving electrode plates and multiple stationary electrode plates are circumferentially arranged on the corresponding moving electrode base and stationary electrode base.

[0021] The circumferential arrangement of multiple corresponding moving and stationary electrode plates firstly improves the stability and reliability of the electrode connection. Even if one electrode plate experiences slight contact failure, the others will still conduct normally, preventing the entire heating spoon from malfunctioning due to a single electrode failure and reducing the risk of equipment failure. Secondly, the circumferential layout eliminates the need for precise alignment of the spoon body and handle assembly during assembly, allowing for assembly at any angle (360°), greatly simplifying the assembly process and improving ease of use, especially suitable for people with limited hand dexterity. Furthermore, the simultaneous operation of multiple electrode plates disperses the current, preventing individual electrode plates from overheating and being damaged due to excessive current, extending the lifespan of the electrode components, and ensuring stable current transmission, providing stable power support to the heating element and guaranteeing stable heating performance.

[0022] Furthermore, a support member is provided at the end of the spoon handle near the spoon head. The support member is a protruding structure extending outward from the spoon handle. The spoon handle is tapered, and the outer diameter of the end of the spoon handle near the spoon head is smaller than the outer diameter of the end of the spoon handle away from the spoon head. The support member and the end of the spoon handle away from the spoon head are used to press against the external bearing surface to prevent the spoon head from contacting the external bearing surface.

[0023] The design of the support and tapered handle provides a stable placement for the heating spoon. When the spoon is not in use or is temporarily placed, the support and the end of the handle furthest from the spoon head press together against an external support surface such as a table, suspending the spoon head and preventing the inner groove of the spoon head from directly contacting the support surface. This prevents dust and stains from the support surface from contaminating the inner groove, ensuring the cleanliness of the spoon head and reducing subsequent cleaning work. Simultaneously, if the spoon head has just finished heating and is still hot, preventing direct contact with the table surface prevents burns and also prevents the spoon head from cooling down rapidly due to contact with a cool surface, reducing heating time if further heating is needed. The tapered handle has a smaller outer diameter near the spoon head and a larger outer diameter further away, which is not only ergonomic, providing a more comfortable and stable grip, but also creates a reasonable support gap between the support and the end of the handle, ensuring the heating spoon is not easily tipped over, improving safety and convenience.

[0024] The beneficial effects of this utility model are as follows: This heating spoon adopts a functional partition design. The spoon body component focuses on holding and heating the food, while the handle component integrates a control module, which is convenient to use and avoids interference from other parts. The hollow spoon handle also prevents burns. An added temperature sensor accurately monitors the spoon head temperature and feeds feedback to the control module for temperature control, making it suitable for temperature-sensitive materials such as breast milk and complementary foods, preventing overheating. The spoon head has an arc-shaped cross-section in both the horizontal and vertical directions. The smooth inner concave surface helps to collect food, prevent spills, and is easy to clean, while also ensuring even heating. The heating element is encapsulated in a receiving groove and a spoon lid. The flexible heating element adheres to the bottom of the groove for efficient heat transfer, and the heat insulation pad reduces heat loss, prevents burns, and protects the element. The operating unit features a display screen and waterproof buttons for easy operation and status monitoring. Multiple circumferential electrode plates support 360° assembly, ensuring stable connection and easy disassembly for cleaning. The conical spoon handle with a support allows the spoon head to be suspended when placed, preventing contamination and burns to the table, balancing practicality and safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a heating spoon according to the present invention;

[0026] Figure 2 This is an exploded view of the present invention;

[0027] Figure 3 This is a partial structural diagram of the connection between the temperature sensor and the electrode in this utility model.

[0028] The reference numerals in the attached drawings include: 1. Spoon body assembly; 2. Handle assembly; 3. Spoon head; 4. Inner groove concave surface; 5. Heating element; 6. Spoon handle; 7. Control module; 8. Temperature sensor; 9. Receiving groove; 11. Spoon lid; 12. Encapsulation rib; 13. Mounting part; 14. Operating unit; 15. Display screen; 16. Control button; 17. Waterproof TPE; 18. Flexible heat insulation pad; 19. Moving electrode base; 21. Moving electrode plate; 22. Static electrode base; 23. Static electrode plate; 24. Support component. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0030] Please see Figures 1 to 3 As shown, a heating spoon of this utility model includes a spoon body assembly 1 and a handle assembly 2 used in conjunction with the spoon body assembly 1. The spoon body assembly 1 includes a spoon head 3 with a blind groove for holding material and a heating element 5 for heating the spoon head 3. The blind groove for holding material in the spoon head 3 has an inner groove concave surface 4 for contacting the target object to be heated. The handle assembly 2 has a spoon handle 6 with a hollow cavity structure. A control module 7 electrically connected to the heating element 5 is integrated inside the hollow cavity structure.

[0031] This heating spoon adopts a modular design. The spoon body assembly 1 and the handle assembly 2 are detachably assembled through an adapter structure (such as buckles, threads, etc.). After assembly, the heating element 5 and the control module 7 form a complete circuit. In use, the material to be heated (such as baby food or beverage) is placed into the blind groove of the spoon head 3, and the concave surface 4 of the inner groove makes full contact with the material to form a heat transfer path. The control module 7, as the core control unit, has a built-in power management circuit, heating drive circuit, and program chip. When the device is powered on, the control module 7 receives the start signal and outputs a specific current to the heating element 5 through a preset program.

[0032] When current is applied to the heating element 5 (such as a resistive heating element), electrical energy is converted into heat energy according to Joule's law. The heat is quickly conducted through the metal substrate of the spoon head 3 (usually food-grade stainless steel or aluminum alloy) to the concave surface 4 of the inner groove, and then from the concave surface to the material in contact, thus heating the material. The hollow spoon handle 6 is made of heat-insulating material (such as food-grade PP or silicone), which can block the heat conduction from the spoon head 3 to the handle. At the same time, it provides a sealed protective space for the control module 7, preventing external moisture and dust from affecting the circuit operation, ensuring that the control module 7 outputs a stable control signal, and maintaining the continuous and safe energy conversion and heat transfer of the heating element 5.

[0033] Specifically, the heating spoon also includes a temperature monitoring unit, which has a temperature sensor 8 located on the spoon head 3 of the spoon body assembly 1. The temperature sensor 8 is electrically connected to the control module 7 to monitor the temperature of the inner groove concave surface 4.

[0034] The temperature monitoring unit employs a closed-loop control logic of "sensor acquisition - signal transmission - module processing." The temperature sensor 8 (typically an NTC thermistor, PT100 platinum resistance thermometer, etc.) is fixed to the spoon head 3 near the inner groove concave surface 4 using high-temperature resistant adhesive or an embedded structure. Its sensing end is in direct contact with the substrate of the spoon head 3, enabling it to detect temperature changes in the inner groove concave surface 4 in real time. When the heating element 5 heats the spoon head 3, the temperature of the inner groove concave surface 4 gradually increases with heat accumulation, and the resistance or voltage value of the sensor changes accordingly (e.g., the resistance value of an NTC thermistor decreases as the temperature increases). This physical change is converted into a recognizable electrical signal by the sensor.

[0035] The electrical signal is transmitted to the control module 7 of the handle assembly 2 via a high-temperature resistant wire. The signal conditioning circuit built into the control module 7 filters, amplifies, and performs analog-to-digital conversion on the original electrical signal, converting the analog signal into a digital signal before transmitting it to the core microprocessor. The microprocessor compares the real-time temperature data with preset temperature thresholds (such as 40℃ for heating baby food and 60℃ for heating beverages). If the real-time temperature is lower than the threshold, it continuously outputs a drive signal to the heating element 5; if the temperature reaches or exceeds the threshold, it immediately cuts off or reduces the power supply current to the heating element 5, realizing a "heating-monitoring-regulation" cycle to ensure that the temperature of the inner concave surface 4 remains stable within the set range and to prevent temperature runaway.

[0036] Specifically, the cross-sectional shape of the spoon head 3 is arc-shaped, the longitudinal cross-sectional shape of the spoon head 3 is arc-shaped, and the inner groove concave surface 4 is a smooth inner arc concave surface.

[0037] The double-arc structure of the scoop head 3 (both the cross-section and longitudinal section are arc-shaped) is designed based on the principles of fluid mechanics and heat conduction. The cross-section adopts a 1 / 4-1 / 3 circular arc structure, and the radius of curvature of the longitudinal section is slightly larger than that of the cross-section, forming a material-holding space similar to a "hemispherical groove". When carrying materials, this structure can utilize the centripetal force effect of the arc surface to naturally gather liquids, pastes, and other easily flowing materials at the bottom of the concave surface, reducing the probability of materials spilling outward due to inertia during the scooping process.

[0038] From a heat conduction perspective, the smooth inner arc concave surface has no protrusions or sharp edges, allowing the heat transferred from the heating element 5 to the spoon head 3 to diffuse evenly along the curved surface, eliminating dead zones where heat accumulates. When heat radiates from the center of the bottom of the spoon head 3 to the surrounding arc surface, the uniform curvature of the surface ensures that the distance from each point to the heating element 5 is similar, resulting in a uniform heat conduction path length. This guarantees that the temperature difference between different areas of the inner concave surface 4 is controlled within ±2℃, ensuring uniform heating of the material. Furthermore, the design of the smooth inner arc surface ensures that the contact between the material and the concave surface is surface contact rather than point contact, increasing the heat exchange area and improving heat transfer efficiency. At the same time, the seamless smooth surface prevents material residue from getting stuck in the gaps. During cleaning, water can flow smoothly along the arc surface, easily rinsing away residual material and reducing cleaning difficulty. This structure optimizes heating performance while also ensuring ease of use.

[0039] Specifically, the spoon body assembly 1 has a receiving groove 9 located on the spoon head 3 for accommodating the heating element 5, and a spoon cover 11 that cooperates with the spoon head 3. The spoon cover 11 is used to cover the receiving groove 9. The inner groove concave surface 4 is located opposite to the receiving groove 9 on both sides of the spoon head 3. The inner side of the spoon cover 11 is provided with an encapsulation rib 12 that abuts against the heating element 5 for encapsulating the heating element 5 in the receiving groove 9.

[0040] The receiving groove 9 is formed on the side of the spoon head 3 away from the inner groove concave surface 4 by stamping or CNC milling. Its size matches the shape of the heating element 5 (e.g., a rectangular groove adapts to a rectangular heating plate). The depth is just enough to accommodate the heating element 5 with a 1-2mm gap reserved, providing precise installation and positioning space for the heating element 5. During assembly, the heating element 5 is first placed in the receiving groove 9, so that its bottom surface fits against the bottom surface of the receiving groove 9. Then, the spoon cover 11 is fixed to the spoon head 3 by ultrasonic welding or snap-fit ​​connection. The encapsulation ribs 12 (a strip structure with a protrusion height of 2-3mm and a width of 3-5mm) on the inner side of the spoon cover 11 will directly abut against the upper surface of the heating element 5 during the assembly process.

[0041] Because the ribs are made of food-grade silicone with a certain degree of elasticity, they will undergo slight deformation after the spoon cover 11 is fixed, applying a continuous pre-tightening force to the heating element 5, firmly pressing the heating element 5 against the bottom surface of the receiving groove 9, ensuring that the contact area between the heating element 5 and the substrate of the spoon head 3 reaches more than 95%, reducing the air gap between them (air is a poor conductor of heat and will hinder heat transfer). The inner groove concave surface 4 and the receiving groove 9 are located on both sides of the spoon head 3, forming a unidirectional heat conduction path of "heating side - spoon head 3 substrate - material side". The heat generated by the heating element 5 is mainly transferred to the spoon head 3 substrate through the bottom surface of the receiving groove 9, and then to the material in the inner groove concave surface 4. Since there is a slight gap between the spoon cover 11 and the heating element 5 due to the encapsulation rib 12, and the spoon cover 11 is made of heat-insulating material, the proportion of heat loss to the spoon cover 11 is less than 5%, which greatly improves the heat utilization efficiency.

[0042] Specifically, the heating element 5 is a flexible heating sheet, which is attached to the bottom surface of the receiving groove 9.

[0043] The flexible heating element uses polyimide (PI) film as the substrate, with etched copper foil or nickel-chromium alloy heating wire embedded inside to form a uniform heating circuit. Its overall thickness is only 0.1-0.3mm, exhibiting excellent flexibility and high-temperature resistance (long-term operating temperature up to 120℃). During installation, the bottom surface of the heating element is coated with high-temperature pressure-sensitive adhesive. After removing the protective film, it can be directly attached to the bottom surface of the receiving groove 9. Because the bottom surface of the receiving groove 9 may have a slight curvature (in conjunction with the curved structure of the spoon head 3), the flexible heating element can bend and deform with the curvature of the groove surface, achieving complete adhesion and avoiding the localized suspension problem that occurs with traditional rigid heating elements (such as metal heating tubes) due to their inability to bend.

[0044] When the control module 7 outputs current to the heating element, the internal alloy heating wire generates heat due to the resistance effect. The heat is quickly transferred through the polyimide substrate to the bottom surface of the receiving groove 9, and then conducted to the spoon head 3. The heating wire of the flexible heating element adopts a serpentine or grid-like layout, so that the heating area is evenly distributed across the entire surface of the heating element, ensuring that there are no local differences in heat output, thereby making the temperature uniform at all points on the bottom surface of the receiving groove 9. In addition, the polyimide substrate of the flexible heating element has good electrical insulation, which can effectively isolate the heating wire from the substrate of the spoon head 3 and prevent the risk of leakage. At the same time, its flexibility makes it less likely to break or fall off when the spoon head 3 is subjected to slight impacts or vibrations, ensuring the long-term stability of the heating element 5.

[0045] Specifically, the spoon handle 6 is provided with a mounting part 13, the mounting part 13 is provided with an operation unit 14 electrically connected to the control module 7, the operation unit 14 includes a display screen 15 and at least one control button 16, and the mounting part 13 is provided with a waterproof TPE 17 that cooperates with the control button 16.

[0046] The mounting portion 13 of the spoon handle 6 is integrally molded using injection molding, forming a recessed rectangular area for embedding the display screen 15 and control buttons 16 of the operation unit 14. The display screen 15 is typically a 0.96-inch OLED or LCD screen, connected to the drive circuit of the control module 7 via an FPC flexible cable. The control module 7 converts real-time temperature, operating mode, and other data into display signals, transmits them to the display screen 15, drives the screen to light up, and displays the corresponding information. Users can intuitively understand the device status through the screen.

[0047] The control button 16 adopts a touch-sensitive button structure. A conductive silicone pad is located at the bottom of the button and is connected to the button detection circuit of the control module 7 via a wire. When the user presses the button, the conductive silicone pad deforms, making contact with the circuit contacts below, forming a circuit path and sending an operation signal to the control module 7 (such as short press to turn on, long press to adjust temperature). The waterproof TPE 17 (thermoplastic elastomer) of the mounting part 13 is wrapped around the outside of the operating unit 14 using a secondary injection molding process, exposing only the display area of ​​the screen 15 and the pressing area of ​​the button. The TPE material has good sealing and elasticity, fitting tightly to the main body of the spoon handle 6, forming a waterproof barrier to prevent water, soup, and other liquids from seeping into the internal circuitry through the gap between the button and the spoon handle 6. Simultaneously, the TPE precisely matches the pressing area of ​​the control button 16. When the button is pressed, the TPE deforms synchronously with the button, ensuring both a soft pressing feel and rapid rebound after pressing, ensuring the button's service life (up to 100,000 times or more), and realizing the waterproof, durable, and convenient operation functions of the operating unit 14.

[0048] Specifically, a flexible heat insulation pad 18 is provided between the heating element 5 and the spoon cover 11, and the flexible heat insulation pad 18 is used to cover the heating element 5.

[0049] The flexible heat insulation pad 18 is made of silicone rubber foam or aerogel insulation film with a thickness of 1-2 mm. It has an extremely low thermal conductivity coefficient (≤0.03 W / (m·K)) and can effectively block heat transfer. It is installed between the heating element 5 and the spoon lid 11, completely covering the upper surface of the heating element 5, and is fixed to the inside of the spoon lid 11 with a high-temperature resistant adhesive. When the heating element 5 generates heat, most of the heat is transferred through the bottom surface to the receiving groove 9 and the spoon head 3, while a small portion radiates upwards to the heat insulation pad. Due to the heat insulation properties of the pad, a large amount of the upward-radiated heat is absorbed and reflected inside the pad, with less than 3% of the heat penetrating the pad to reach the spoon lid 11, keeping the surface temperature of the spoon lid 11 below 30°C and preventing burns to the user.

[0050] Meanwhile, the heat insulation pad physically isolates the heating element 5 from the inner side of the spoon cover 11, preventing friction between the spoon cover 11 and the heating element 5 during assembly or use, which could damage the insulation layer on the surface of the heating element 5. Furthermore, the heat insulation pad's covering function prevents dust and moisture from entering the gap between the heating element 5 and the spoon cover 11, avoiding dust accumulation affecting heat dissipation or moisture causing a short circuit. From a heat utilization perspective, the presence of the heat insulation pad reduces heat loss to the non-working area (the side of the spoon cover 11), allowing more heat to be concentrated and transferred to the concave surface 4 of the inner groove of the spoon head 3, thus improving heating efficiency and reducing equipment energy consumption.

[0051] Specifically, the spoon body assembly 1 is provided with a moving electrode seat 19 and a moving electrode piece 21 inserted on the moving electrode seat 19, and the handle assembly 2 is provided with a static electrode group, which includes a static electrode seat 22 and a static electrode piece 23 inserted on the static electrode seat 22. The moving electrode piece 21 and the static electrode piece 23 make contact and conduction when the spoon body assembly 1 and the handle assembly 2 are assembled.

[0052] The moving electrode holder 19 is made of insulating material (such as PA66 nylon) and is integrally molded with the connecting end of the spoon body assembly 1 through injection molding. It has 2-4 electrode sockets inside. The moving electrode pieces 21 (made of brass with gold plating to improve conductivity and wear resistance) are fixed in the sockets by interference fit or welding. One end of the moving electrode pieces 21 is connected to the wires of the heating element 5 and the temperature sensor 8, and the other end extends out of the electrode holder to form a contact end. The stationary electrode holder 22 is also made of insulating material and is fixed with the connecting end of the handle assembly 2. It has stationary electrode pieces 23 (with the same structure as the moving electrode pieces 21) inside, corresponding to the number of moving electrode pieces 21. One end of the stationary electrode pieces 23 is connected to the wires of the control module 7, and the other end forms a contact end.

[0053] When assembling the spoon body assembly 1 and the handle assembly 2, the moving electrode seat 19 of the spoon body is inserted into the stationary electrode seat 22 of the handle. The contact end of the moving electrode plate 21 and the contact end of the stationary electrode plate 23 abut against each other. Due to the gold plating on the surface of the electrode plates, the contact resistance can be controlled below 0.1Ω, ensuring smooth current conduction. At this time, the control module 7, the stationary electrode plate 23, the moving electrode plate 21, the heating element 5, and the temperature sensor 8 form a complete series circuit. The current output by the control module 7 can be transmitted to the heating element 5 through the electrode plates, and the signal from the temperature sensor 8 can also be fed back to the control module 7 through the electrode plates. This pluggable electrode connection structure allows for assembly and disassembly without tools. When cleaning the spoon body, simply pull out the spoon body assembly 1, and the electrode plates will automatically separate, preventing the handle assembly 2 from coming into contact with moisture. At the same time, the insulating structure of the electrode seat prevents the electrode plates from contacting external metal parts, avoiding the risk of leakage and ensuring the safety and reliability of the circuit connection.

[0054] Specifically, there are multiple moving electrode pieces 21 and multiple stationary electrode pieces 23. There is a one-to-one correspondence between the moving electrode pieces 21 and the stationary electrode pieces 23. The multiple moving electrode pieces 21 and the multiple stationary electrode pieces 23 are circumferentially arranged on the corresponding moving electrode base 19 and stationary electrode base 22.

[0055] The number of moving electrode plates 21 and stationary electrode plates 23 is usually 3-4, each performing different functions (such as 1 positive electrode, 1 negative electrode, 1 temperature signal transmission, and 1 spare). They are all fixed to the electrode base in a circumferentially uniform distribution (e.g., 3 electrode plates are distributed at a 120° angle, and 4 are distributed at a 90° angle). During assembly, regardless of the relative rotation angle between the spoon body assembly 1 and the handle assembly 2, as long as the moving electrode base 19 is inserted into the stationary electrode base 22, each moving electrode plate 21 can make precise contact with the corresponding stationary electrode plate 23. This is because the circumferential distribution forms a complete ring in the contact area of ​​the electrode plates, eliminating the need for alignment with a specific direction during assembly and achieving 360° arbitrary angle conduction.

[0056] From a circuit safety perspective, multiple electrode plates operate independently, transmitting different currents or signals (e.g., the positive and negative electrodes transmit heating current, while individual electrodes transmit temperature signals), avoiding signal interference. Even if one electrode plate temporarily fails due to poor contact, the other electrodes can still function normally (e.g., a spare electrode plate can replace the failed positive or negative electrode), ensuring the equipment does not suddenly stop operating and improving circuit redundancy and reliability. Furthermore, when multiple electrode plates transmit current simultaneously, the total current is distributed across all electrode plates (e.g., with a total current of 2A, each of the four electrode plates carries 0.5A), preventing individual electrode plates from overheating due to excessive current, thus preventing oxidation or burnout and extending the lifespan of the electrode components. Simultaneously, uniform current distribution ensures a stable power supply to the heating element 5, preventing unstable heating effects caused by current fluctuations.

[0057] Specifically, the end of the spoon handle 6 near the spoon head 3 is provided with a support member 24. The support member 24 is a protruding structure extending outward from the spoon handle 6. The spoon handle 6 is tapered, and the outer diameter of the end of the spoon handle 6 near the spoon head 3 is smaller than the outer diameter of the end of the spoon handle 6 away from the spoon head 3. The support member 24 and the end of the spoon handle 6 away from the spoon head 3 are used to press against the external bearing surface to prevent the spoon head 3 from contacting the external bearing surface.

[0058] The support component 24 is made of the same heat-insulating material as the spoon handle 6 (such as food-grade PP), and is integrally molded with the spoon handle 6 through injection molding. It has a ring-shaped or symmetrical sheet-like protrusion structure with a protrusion height of 5-8mm, and its central axis coincides with the central axis of the spoon handle 6. The tapered structure design of the spoon handle 6 makes the outer diameter (usually 15-20mm) near the end of the spoon head 3 smaller than the outer diameter (usually 25-30mm) away from the spoon head 3, forming a shape that gradually thickens from bottom to top. This structure is not only ergonomic (making it easier for the hand to exert force when gripping), but also works with the support component 24 to form a stable support system.

[0059] When the heating spoon is placed on a support surface such as a table, the lower surface of the support member 24 and the bottom surface of the end of the spoon handle 6 away from the spoon head 3 together form two support points. The line connecting the two points and the axis of the spoon handle 6 form a stable triangular support structure (the support member 24 is the upper support point, and the end of the spoon handle 6 is the lower support point). Since the support member 24 is located close to the spoon head 3, its height design ensures that the inner groove concave surface 4 of the spoon head 3 is 10-15mm above the support surface, preventing the concave surface from directly contacting the table. At the same time, the center of gravity of the tapered spoon handle 6 is biased downward (near the end), making the center of gravity of the support structure lower than the line connecting the support points, further improving the stability when placed and preventing the heating spoon from tipping over. In addition, when the spoon head 3 has just finished heating, the suspended design prevents the hot spoon head 3 from contacting the table, preventing damage to the table due to high temperature, and also reduces the transfer of heat from the spoon head 3 to the table, keeping the temperature of the spoon head 3 stable for a short time. If further heating is needed, it can reduce the time for reheating and improve the efficiency of use.

[0060] The working principle of this invention is as follows: The heating spoon adopts a modular collaborative working mode. After the spoon body assembly 1 and the handle assembly 2 are assembled through an adapter structure, the moving electrode plate 21 and the stationary electrode plate 23 make precise contact and conduction, so that the control module 7 in the handle assembly 2, the heating element 5 and the temperature sensor 8 in the spoon body assembly 1 form a complete working circuit. In use, the material to be heated is placed into the material-containing blind groove of the spoon head 3, and the concave surface 4 of the inner groove makes full contact with the material to form a heat transfer path.

[0061] After receiving the start signal, the control module 7 outputs a specific current to the heating element 5 through its built-in power management and heating drive circuit. The flexible heating element (with polyimide as the base material and an alloy heating wire inside) converts electrical energy into heat energy according to Joule's law. The heat is quickly conducted through the bottom surface of the receiving groove 9 to the metal substrate of the spoon head 3, and then to the material on the concave surface 4 of the inner groove. At the same time, the temperature sensor 8 monitors the temperature of the concave surface 4 of the inner groove in real time, converts the temperature change into an electrical signal, and transmits it to the control module 7. After signal processing, the module compares the signal with a preset threshold and dynamically adjusts the power supply current of the heating element 5 to achieve closed-loop control of "heating-monitoring-regulation" to ensure that the material temperature is stable within a safe range and to avoid overheating or underheating.

[0062] During the core heating and temperature control process, various auxiliary structures work simultaneously to optimize performance and user experience. The double-arc structure of the spoon head 3 utilizes fluid dynamics principles to gather materials, while the smooth inner concave surface ensures uniform heat diffusion, keeping the temperature difference of the material within ±2℃. The receiving groove 9 cooperates with the spoon cover 11, and the heating element 5 is tightly pressed into the groove by the encapsulation ribs 12, reducing air gaps and improving heat conduction efficiency. The flexible heat insulation pad 18 prevents heat loss to the spoon cover 11, increasing the heat utilization efficiency to over 95%. The operation unit 14 displays the temperature and working mode in real time via the display screen 15, and the control buttons 16, combined with the waterproof TPE 17, enable convenient operation and waterproof protection. The support 24 and the conical spoon handle 6 form a stable support structure, allowing the spoon head 3 to suspend 10-15mm when placed, preventing contamination and high-temperature damage to the tabletop. Multiple circumferentially distributed electrode plates ensure 360° assembly and conduction at any angle, dispersing current to ensure circuit stability. Overall, it achieves integrated functions of efficient heating, precise temperature control, safe operation, and convenient use.

[0063] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A heating spoon, characterized by: The spoon assembly includes a spoon body assembly (1) and a handle assembly (2) used in conjunction with the spoon body assembly (1). The spoon body assembly (1) includes a spoon head (3) with a blind groove for holding material and a heating element (5) for heating the spoon head (3). The blind groove for holding material in the spoon head (3) has an inner groove concave surface (4) for contacting the target object to be heated. The handle assembly (2) has a spoon handle (6) with a hollow cavity structure. A control module (7) electrically connected to the heating element (5) is integrated in the hollow cavity structure.

2. A heating spatula according to claim 1, wherein: The heating spoon also includes a temperature monitoring unit, which has a temperature sensor (8) located on the spoon head (3) of the spoon body assembly (1). The temperature sensor (8) is electrically connected to the control module (7) to monitor the temperature of the inner groove concave surface (4).

3. A heating spoon according to claim 1, characterized in that: The cross-sectional shape of the spoon head (3) is arc-shaped, the longitudinal cross-sectional shape of the spoon head (3) is arc-shaped, and the inner groove concave surface (4) is a smooth inner arc concave surface.

4. A heating spoon according to claim 1, characterized in that: The spoon body assembly (1) has a receiving groove (9) located on the spoon head (3) for accommodating the heating element (5) and a spoon cover (11) that cooperates with the spoon head (3). The spoon cover (11) is used to cover the receiving groove (9). The inner groove concave surface (4) is located opposite to the receiving groove (9) on both sides of the spoon head (3). The inner side of the spoon cover (11) is provided with an encapsulation rib (12) that abuts against the heating element (5) for encapsulating the heating element (5) in the receiving groove (9).

5. A heating spoon according to claim 4, characterized in that: The heating element (5) is a flexible heating sheet, which is attached to the bottom surface of the receiving groove (9).

6. A heating spoon according to claim 1, characterized in that: The spoon handle (6) is provided with a mounting part (13), and the mounting part (13) is provided with an operation unit (14) electrically connected to the control module (7). The operation unit (14) includes a display screen (15) and at least one control button (16). The mounting part (13) is provided with a waterproof TPE (17) that cooperates with the control button (16).

7. A heating spoon according to claim 4, characterized in that: A flexible heat insulation pad (18) is provided between the heating element (5) and the spoon cover (11), and the flexible heat insulation pad (18) is used to cover the heating element (5).

8. A heating spoon according to claim 1, characterized in that: The spoon assembly (1) is provided with a moving electrode seat (19) and a moving electrode piece (21) inserted on the moving electrode seat (19). The handle assembly (2) is provided with a static electrode group, which includes a static electrode seat (22) and a static electrode piece (23) inserted on the static electrode seat (22). The moving electrode piece (21) and the static electrode piece (23) are in contact and connected when the spoon assembly (1) and the handle assembly (2) are assembled.

9. A heating spoon according to claim 8, characterized in that: There are multiple moving electrode plates (21) and multiple stationary electrode plates (23). There is a one-to-one correspondence between the moving electrode plates (21) and the stationary electrode plates (23). Multiple moving electrode plates (21) and multiple stationary electrode plates (23) are circumferentially arranged on the corresponding moving electrode base (19) and stationary electrode base (22).

10. A heating spoon according to claim 1, characterized in that: The end of the spoon handle (6) near the spoon head (3) is provided with a support member (24). The support member (24) is a protruding structure extending outward from the spoon handle (6). The spoon handle (6) is conical. The outer diameter of the end of the spoon handle (6) near the spoon head (3) is smaller than the outer diameter of the end of the spoon handle (6) away from the spoon head (3). The support member (24) and the end of the spoon handle (6) away from the spoon head (3) are used to press against the outer bearing surface to prevent the spoon head (3) from contacting the outer bearing surface.

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