Heating assembly
By designing an elastic buffer structure and conductive circuit in the heating component, the problem of electric heating products being unable to cut off power in time when the substrate is damaged is solved, achieving rapid power-off protection, reducing the risk of leakage, and improving user safety and production efficiency.
Patent Information
- Application Number
- CN202423268987.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing electric heating products cannot disconnect the circuit in time when the base material is damaged, resulting in the risk of leakage and affecting user safety.
Design a heating component including an electrically energized heating element and a mounting base. Through an elastic buffer structure and conductive circuit design, the circuit is automatically disconnected when the substrate is damaged, triggering power failure protection.
It achieves fast-response power failure protection, reduces the risk of leakage current, improves user safety and user experience, and has a simple structure that is easy to manufacture.
Smart Images
Figure CN223900671U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of electric heating, in particular to a heating assembly. BACKGROUND
[0002] In daily life, electric rice cookers or electric cookers are common cooking utensils, and the common heating method of electric rice cookers is a heating tube aluminum disc, which has low heat conduction efficiency, high temperature overflow, and uneven temperature inside the pot, especially when using glass or ceramic inner pot, if the glass or ceramic inner pot is damaged by external force, the heating source may continue to conduct electricity, which may trigger an electric shock or equipment short circuit, affecting the safety and use of users.
[0003] In daily life, slow cookers or medicine pots are common slow cooking utensils, and they often need to be cooked or stewed for a long time. If glass or ceramic inner pot is used for heating, the heating source may continue to conduct electricity when the glass or ceramic inner pot is accidentally broken, which may trigger an electric shock or equipment short circuit, affecting the safety and use of users.
[0004] In daily life, electric kettles are common tea-making utensils, and tea-making is a very common leisure phenomenon. Tea-making usually uses water heating equipment to get hot water at any time to brew tea leaves. The market is rich in electric heating water heating equipment. Common electric heating water heating equipment generally has a heating source (such as a kettle heating base) for heating and a heated object (such as a water kettle) for heating. It is very convenient for tea heating, but the electric heating water heating equipment also has safety hazards during use. When the heating temperature of the heating source is too high or the carrier substrate of the heated object is damaged by external force, the heating source may continue to conduct electricity, which may trigger an electric shock or equipment short circuit. The existing electric heating products cannot effectively and timely disconnect the circuit to prevent power leakage when the carrier substrate is damaged, which affects the safety and use of users.
[0005] In view of the above shortcomings, we need to develop a heating assembly to meet the needs of users. INVENTION CONTENTS
[0006] In view of the above-mentioned problem that the existing electric heating products cannot effectively and timely disconnect the circuit to prevent power leakage when damaged, the technical solution adopted by the utility model to solve the technical problem is:
[0007] A heating assembly comprises a heating element capable of generating heat when powered and a mounting base for mounting the heating element, the heating element comprising a substrate for placing a heated object, the heating element being electrically connected to an external electric control device for triggering a power-off protection, the electric control device forming a power circuit, when the substrate is damaged, the power circuit being disconnected to trigger the power-off protection.
[0008] Further, a supporting seat for elastic buffering is mounted between the heating element and the mounting base, a first elastic buffer for limiting the mounting position of the heating element is mounted between the heating element and the supporting seat, and a second elastic buffer for buffering force is mounted between the supporting seat and the mounting base.
[0009] Further, the first elastic buffer adopts a hollow ring structure and is sleeved on the outer edge of the heating element, and the first elastic buffer respectively contacts the front face A, the side face B and the back face C of the heating element.
[0010] Further, the mounting base has a limiting hole for limiting the mounting position of the supporting seat, the supporting seat has a limiting pillar for extending into the limiting hole, and the second elastic buffer is mounted between the limiting hole and the limiting pillar and elastically abuts against the surface of the supporting seat.
[0011] Further, a heat insulation member is mounted between the heating element and the mounting base, the heat insulation member is located close to the back face B of the heating element, and the maximum cross-sectional area of the heat insulation member is greater than one half of the maximum cross-sectional area of the heating element.
[0012] Further, a temperature sensor for detecting the heating temperature is further included, the temperature sensor is located on the side of the heat insulation member away from the heating element, and the detection end of the temperature sensor penetrates through the heat insulation member and the heating element and is close to the front face A of the heating element.
[0013] Further, the mounting base is provided with a detection seat close to the position where the heated object is placed, the detection seat is mounted with a liquid level detection device for detecting the liquid level information of the heated object, and the detection end of the liquid level detection device is close to the position where the heated object is placed.
[0014] And / or the detection seat is mounted with a temperature detection device for detecting the temperature information of the heated object, and the detection end of the temperature detection device faces the position where the heated object is placed.
[0015] Further, a contact assembly for turning on the heating element circuit is further included, the contact assembly includes a first conductive deformation member and a second conductive deformation member, the first conductive deformation member and the second conductive deformation member are respectively in elastic contact with the electrode layer of the heating element, and the first conductive deformation member and the second conductive deformation member are respectively connected with an external power supply to form a power-on loop.
[0016] Further, the substrate is made of a brittle material, the substrate is provided with a conductive heating layer and a conductive protection layer, the conductive protection layer includes a conductive layer arranged in a surrounding manner around the outer side of the conductive heating layer, one end of the conductive layer has a first end point, the other end of the conductive layer has a second end point, and the first end point and the second end point have a gap G therebetween, and the first end point and the second end point are respectively connected with an external electric control device to form a power-on loop.
[0017] Further, the heating material of the conductive heating layer is formed into a planar heating layer by using one of a nano metal oxide, a nano semiconductor metal oxide, a graphene material, and a carbon paste material.
[0018] The beneficial effects of the utility model are as follows:
[0019] 1. The utility model forms a power-on loop by electrically connecting the heating element which can be powered to heat with the external electric control device used for triggering power-off protection, when the substrate is intact, the power-on loop is turned on, that is, in a normal use state, when the substrate is damaged, the power-on loop is synchronously disconnected due to the influence of the damaged substrate, that is, in an abnormal use state, the disconnection of the power-on loop triggers the external electric control device to implement power-off protection, the protection response speed is fast, the protection efficiency is high, the structure is simple and ingenious, and the utility model can be easily produced and used by users on the basis of ensuring use safety.
[0020] 2. The conductive heating layer of the utility model is formed into a planar heating layer by using one or more of a nano metal oxide, a nano semiconductor metal oxide, a graphene material, and a carbon paste material, preferably a nano semiconductor metal oxide, the thickness of the nano semiconductor metal oxide attached to the substrate is smaller, the conductive performance and heating performance are relatively excellent, the attachment process is simple, the production cost is reduced, the production efficiency is improved, and a large number of products can be produced.
[0021] 3. The substrate of the utility model can be made of a brittle material, which can be easily broken and synchronously disconnected with the conductive protection layer when danger occurs, the trigger mode of immediate disconnection after breaking makes the response speed of power-off protection faster, the thermal expansion coefficient of the brittle material is usually low, the brittle material can be applied to heating to protect against overheating damage, and the brittle material has a structural stability effect of not being easily bent and deformed, which is convenient for users to use.
[0022] 4、The utility model discloses still install the support seat for elastic buffering between heating element and installation base, through the installation position of first elastic buffering piece stable clamping heating element on support seat, under the double buffering of first elastic buffering piece and second elastic buffering piece, can reduce the instantaneous impact that heating article places in heating element produces, also can improve the normal jolt degree that heating element can bear when daily storage, reduce the fragmentation and breakage of heating element in daily life due to the reason except accidental violent destruction, under the effect of buffering and shock absorption, the user places heating article (the kettle body) from traditional rigid contact becomes close flexible contact placing feeling, ensure heating body and heating body closely fit simultaneously, improve heating efficiency, improve the use experience of user.
[0023] 5、The utility model discloses install liquid level detection device and temperature detection device on installation base, can be used for the auxiliary detection of the liquid level change of heating article in the heating process, avoid the container dry burning condition, reduce the security risk, realize liquid level heating controllable, also can be used for the auxiliary detection of the temperature change of heating article in the heating process, avoid the overheat condition of the container sustained heating, after heating, facilitate stopping heating, realize heating temperature controllable.
[0024] 6、The utility model discloses still set up heat insulation piece in the bottom of heating element, can block the heat of heating element from the bottom, after the heat loss of heat insulation piece obstruction, can better gather in the front heating position, after the heat loss of heat insulation piece obstruction, can further improve heating effect, can also reduce the heating degree of installation base bottom, reduce the influence of heat on installation base placement environment. ACCURACY OF DRAWINGS
[0025] Figure 1 It is a perspective view of a heating assembly of the utility model.
[0026] Figure 2 It is a perspective exploded view of a heating assembly of the utility model.
[0027] Figure 3 It is a front view of a heating assembly of the utility model.
[0028] Figure 4 It is Figure 3 E-E sectional view.
[0029] Figure 5 It is Figure 4 F enlarged view.
[0030] Figure 6 It is an external structure diagram of a heating plate of the utility model.
[0031] Figure 7 It is another embodiment schematic view of a heating assembly of the utility model.
[0032] Figure 8 This is a second schematic diagram of another embodiment of a heating component of this utility model. Detailed Implementation
[0033] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0034] Optionally, in some embodiments, the substrate 11 may be made of one of the following brittle materials: glass, ceramic, stone, plastic, etc. Preferably, the substrate 11 is made of glass or ceramic. Glass or ceramic has the characteristic of being brittle and easily broken. When it breaks due to external force, the conductive protective layer 13 is disconnected, which leads to the disconnection of the power-on circuit and makes it easier to trigger the power-off protection. Glass has good light transmittance and aesthetics, and is more visually appealing when used in product appearance. Glass or ceramic has good resistance to most chemicals, is not easily corroded, and has high hardness, so it will not easily wear down after long-term use. Glass or ceramic has a low coefficient of thermal expansion at high temperatures, so it is not easy to expand and deform.
[0035] Optionally, in some embodiments, the conductive protective layer 13, the conductive layer 131, or the electrode layer can be made of one of the following materials with good conductivity: gold, silver, copper, aluminum, tin, etc. Preferably, the conductive protective layer 13 or the electrode layer is laid with silver paste made of silver material. Silver paste has high conductivity, can effectively conduct current, reduce power loss, and silver paste is easy to form on the surface of the substrate 11, which is convenient for processing and production.
[0036] Example 1:
[0037] like Figures 1 to 5 The heating component shown can be used in electric kettles, tea makers, formula makers, electric cookers, and other electrical appliances. It includes a heating element 1 that can generate heat when energized and a mounting base 2 for mounting the heating element 1. The heating element 1 includes a substrate 11 for placing objects to be heated. When energized, the conductive heating material on the surface of the substrate 11 generates heat, which is supplied to the objects to be heated (such as kettles, water bottles, water cups, etc.), causing the surface of the objects to heat up. The liquid inside the objects absorbs the heat to form hot water, thus achieving the normal heating function. The mounting base 2 is a protective shell for mounting and clamping the heating element 1 and providing stable support. At least three positioning feet 22 extend from the bottom of the mounting base 2 to stably support its placement, making it convenient for users to place objects to be heated on the heating element 1 for heating.
[0038] More specifically, the heating element 1 has a heating material for generating heat and a conductive material for connecting external devices attached on the surface of the substrate 11, the heating material and the conductive material can be attached on the surface of the substrate 11 by one of the following methods: physical vapor deposition (PVD), chemical vapor deposition (CVD), silk screen printing (SS), far infrared spectrum (FI), etc., the attached and shaped area of the heating material is the heating area, and the attached and shaped area of the conductive material is the conductive area, wherein the heating area and the conductive area are independent of each other and do not overlap, the conductive area surrounds the outer space of the heating area, and the conductive area is located between the edge of the heating area and the edge of the substrate 11 on which the heating area is located.
[0039] In use, the heating area of the heating element 1 can be electrically connected to an external power supply (mains or power supply device) to conduct electricity and heat, and the conductive area of the heating element 1 can be electrically connected to an external electric control device for triggering power-off protection to form a power-on loop. Since the conductive material is attached on the surface of the substrate 11, the external electric control device can determine whether the substrate 11 has been damaged or broken by detecting the integrity of the power-on loop in real time. When the substrate 11 is intact, the power-on loop is on, i.e., in a normal use state. When the heating element 1 is damaged or broken, the conductive area is disconnected simultaneously due to the damage of the substrate 11, resulting in the disconnection of the power-on loop, i.e., in an abnormal use state. Since the conductive material is formed on the substrate 11 by coating, adhesion, silk screen printing or physical vapor deposition, the conductive material itself does not have toughness and ductility. Therefore, when the substrate 11 is damaged or broken and affects the normal heating of the heating element 1, the damaged or broken part must first pass through the conductive area surrounding the outside of the heating area, and then damage the heating material in the heating area. On this basis, the substrate 11 is preferably made of a brittle material so that it can be broken more completely when broken to ensure that the disconnection of the conductive material is affected. Therefore, when the substrate 11 is damaged or broken, i.e., the attachment layer of the conductive material is broken, the disconnection of the attachment layer of the conductive material also means the disconnection of the power-on loop. The disconnection of the power-on loop can immediately trigger the power-off protection mechanism of the external electric control device to disconnect the circuit connected to the heating element 1 to avoid the occurrence of electric leakage, thereby achieving a fast response and high protection efficiency of the power-off protection effect.
[0040] As another embodiment 101 of embodiment 1, the heating assembly further comprises a contact assembly 6 for conducting electricity to the heating element 1, the contact assembly 6 comprises a first conductive deformation member 61 and a second conductive deformation member 62, the first conductive deformation member 61 and the second conductive deformation member 62 respectively elastically contact the electrode layer 122 of the heating element 1, the first conductive deformation member 61 and the second conductive deformation member 62 respectively communicate with an external power supply to form a power supply loop, so that the external power supply (mains or power supply device) stably communicates with the heating element 1 to implement power heating, and on this basis, the first conductive deformation member 61 and the second conductive deformation member 62 are made of an elastically deformed metal product with surface bending, forming a top pressure contact assembly with certain elastic reset deformation, further slowing down the impact of the heating element 1, and improving the stability of the circuit communication.
[0041] As another embodiment 102 of embodiment 101, the first conductive deformation member 61 and / or the second conductive deformation member 62 are made of one or more elastically deformed metals that respectively elastically press the back surface B of the heating element 1, to provide sufficient elastic support force and guarantee the stability of the contact and communication circuit.
[0042] Embodiment 2:
[0043] On the basis of embodiment 1, in order to reduce the damage and fragmentation of the base material 11 caused by accidental scratching, jolting and bumping in daily normal use, a heating assembly as shown in Figure 2 and Figure 5 is installed between the heating element 1 and the mounting base 2 for elastic buffering, a first elastic buffer 31 is installed between the heating element 1 and the supporting seat 3 for limiting the installation position of the heating element 1, and a second elastic buffer 32 is installed between the supporting seat 3 and the mounting base 2 for buffering force.
[0044] Specifically, the first elastic buffer 31 can be made of soft materials such as plastic and rubber, and the first elastic buffer 31 can adopt a hollow ring structure and be sleeved on the outer side edge of the heating element 1, the first elastic buffer 31 respectively contacts the front surface A, the side surface B and the back surface C of the heating element 1, forming a buffer zone between the edge of the heating element 1 and the supporting seat 3, wherein the front surface A is used to contact and heat the heated object, the inner diameter of the first elastic buffer 31 is smaller than the maximum outer diameter of the heating element 1, and the outer diameter of the first elastic buffer 31 is greater than the maximum outer diameter of the heating element 1, the force impact of the heating element 1 is buffered by the first elastic buffer 31 before being transmitted to the supporting seat 3, which will not cause the heating element 1 to collide and deform and fragment, and the force impact of the supporting seat 3 is also buffered by the first elastic buffer 31 before being transmitted to the heating element 1, which will also not cause the heating element 1 to collide and deform and fragment, the first elastic buffer 31 absorbs the shock and fluctuation of the force impact and leaves a certain shock buffering margin, and the first elastic buffer 31 elastically clamps the heating element 1 by utilizing the material characteristics to limit the installation position of the heating element 1 on the supporting seat 3.
[0045] More specifically, the second elastic buffer 32 can be made of a material with certain elastic reset, such as metal, plastic, etc., and is formed into an elastic deformation member (such as a spring, an elastic washer, etc.), which is installed between the support seat 3 and the mounting base 2 to buffer the impact force generated by the support seat 3 on the mounting base 2 after the heated object is placed on the heating element 1. On the basis of the first layer of buffer zone of the first elastic buffer 31, a second layer of buffer zone is formed, which can help the heating element 1 further release the impact force in use, and protect the heating element 1 from being easily damaged and broken.
[0046] As another embodiment 201 of embodiment 2, the support seat 3 further comprises a cover ring 35 covering the surface of the first elastic buffer 31. The cover ring 35 is annular and covers the support seat 3. The first elastic buffer 31 is arranged between the cover ring 35 and the support seat 3 and wraps around the edge of the heating element 1 close to the cover ring 35. The inner diameter of the cover ring 35 is smaller than the maximum outer diameter of the heating element 1, and the outer diameter of the cover ring 35 is greater than the maximum outer diameter of the heating element 1. The side of the cover ring 35 away from the first elastic buffer 31 is provided with a positioning conical surface 351 inclined towards the center. When the user accidentally places the heated object on the cover ring 35 during use, the heated object can be slid onto the surface of the heating element 1 at the center position by the positioning conical surface 351, avoiding the first elastic buffer 31 exposed to the outside affecting the placement of the heated object.
[0047] As another embodiment 202 of embodiment 2, the positioning leg 22 of the mounting base 2 is provided with a limiting hole 21 for limiting the installation position of the support seat 3. The support seat 3 extends towards the mounting base 2 and is provided with a limiting pillar 33 for extending into the limiting hole 21. The number of limiting pillars 33 can be adapted according to the number of positioning legs 22 of the mounting base 2, and preferably corresponds to a number of three or more. The cooperation between the limiting pillar 33 and the limiting hole 21 effectively enhances the circumferential stability of the support seat 3, avoiding the support seat 3 from rotating arbitrarily in the circumferential direction during use, and improving the stability of the placement of the heated object. On this basis, the second elastic buffer 32 is installed at the position between the limiting hole 21 and the limiting pillar 33. The second elastic buffer 32 is elastically pressed against the surface of the support seat 3, stabilizing the installation position and the elastic pressing direction of the second elastic buffer 32. The support seat 3 and the mounting base 2 form a detachable structure which can be conveniently detached and installed, facilitating the use of the user.
[0048] Embodiment 3:
[0049] On the basis of embodiment 1 or embodiment 2, such as Figures 2 to 5The heating assembly shown has a heat insulation component 4 installed between the heating element 1 and the mounting base 2. The heat insulation component 4 is located near the back side B of the heating element 1. The heat insulation component 4 is used to block the heat loss of the heating element 1, so as to ensure that the heat can be better concentrated in the front space of the heating element 1, thereby improving the heating quality and heating speed. The heat insulation component 4 can be installed near the back side B of the mounting base 2 or near the back side B of the support 3. More specifically, if the blocking area is too small, it cannot effectively block and insulate the heat, and if the blocking area is too large, it will affect the overall installation of the heating assembly. Therefore, the maximum cross-sectional area of the heat insulation component 4 is larger than half of the maximum cross-sectional area of the heating element 1 to ensure that the heat insulation component 4 can better guarantee the blocking effect of heat loss.
[0050] As another embodiment 301 of embodiment 3, when the heat insulation component 4 is installed on the support base 3, the support base 3 is provided with a heat insulation mounting bracket 34 for installing the heat insulation component 4. The heat insulation mounting bracket 34 can prevent the heat insulation component 4 from directly contacting the mounting base 2, avoid heat conduction affecting the material of the mounting base 2, and can also restrict the installation position of the heat insulation component 4, so that the heat insulation component 4 is closer to the heating component 1.
[0051] Example 4:
[0052] Based on Example 3, such as Figures 2 to 5 The heating assembly shown also includes a first temperature sensor for detecting the heating temperature. The first temperature sensor can use a thermocouple or an NTC thermistor as the probe of the detection end. The first temperature sensor is located on the side of the heat insulation component 4 away from the heating component 1. The first temperature sensor can be installed on the mounting base 2 near the back side B, or on the support 3 near the back side B. The detection end of the first temperature sensor passes through the heat insulation component 4 and the heating component 1 and is close to the front side A of the heating component 1. The heating component 1 has a first detection hole 14 for the detection end of the first temperature sensor to pass through, and the heat insulation component 4 has a second detection hole 41 for the detection end of the first temperature sensor to pass through, so as to ensure the stability and accuracy of the detected temperature. The first temperature sensor can be connected to the circuit that controls the heating of the heating component 1. The heating temperature is monitored in real time by the first temperature sensor, and the heating can be interrupted in time after the preset heating temperature is reached to avoid safety hazards and waste of power.
[0053] As another embodiment 401 of embodiment 4, the mounting base 2 is also equipped with a display screen for displaying heating information. The first temperature sensor can be electrically connected to the display screen to output and display the real-time heating temperature change value, so that the user can intuitively see the heating change.
[0054] As another embodiment 402 of embodiment 4, a barrier gasket 42 is further arranged between the heat insulation member 4 and the heating member 1, a gasket hole 421 is formed in the center of the barrier gasket 42 for the detection end of the first temperature sensor to pass through, and the barrier gasket 42 can be used to avoid the heat insulation material of the heat insulation member 4 directly contacting the heating member 1, and to avoid the heat insulation member 4 from being affected by sticking or carbonization to affect the use and replacement of the heating member 1.
[0055] As another embodiment 403 of embodiment 4, as shown in Figure 8 , the heating member 1 and the heat insulation member 4 do not need to be provided with a through hole for the detection end of the first temperature sensor to pass through, and the first temperature sensor is installed on the side of the heat insulation member 4 away from the heating member 1, and the detection end can also be wound around the position of the heat insulation member 4 connected to the heating member 1 to detect the heating temperature in real time, which is convenient for controlling the temperature of the heating surface.
[0056] Embodiment 5:
[0057] On the basis of embodiment 3, in order to avoid the case that the heated object continues to be heated after the liquid is burned dry during the heating process, as shown in Figure 7 , a heating assembly suitable for electric kettles, tea boilers, milk dispensers and other electrical appliances is provided, a detection support 5 is arranged on the installation base 2 near the position where the heated object is placed, the detection support 5 is a detection device installation housing formed on the upper surface of the installation base 2, and the detection support 5 is installed with a liquid level detection device 51 for detecting the liquid level information of the heated object. The detection end of the liquid level detection device 51 is close to the placement position of the heated object, the liquid level detection device 51 can detect the liquid level change of the heated object by using capacitance induction or infrared light reflection, and the liquid level detection device 51 preferably uses a non-contact capacitive liquid level sensor to avoid dry burning during heating. The liquid level detection device 51 can be connected to the circuit for controlling the heating of the heating member 1, and the liquid level change is monitored in real time by the liquid level detection device 51, so that the heating can be interrupted in time to avoid safety hazards and waste of power supply when the liquid level is reduced to a preset liquid level.
[0058] As another embodiment 501 of embodiment 5, the detection support 5 can also be detachably connected (such as one of plug-in, buckle, magnetic attraction, etc.) to the installation base 2, and is used as a user-selected accessory to meet different user needs.
[0059] Embodiment 6:
[0060] On the basis of embodiment 3, as shown in Figure 7The diagram shows a heating assembly suitable for appliances such as electric kettles, tea makers, and formula makers. A temperature detection device 52 for detecting the temperature of heated objects is installed on the detection support 5. The detection end of the temperature detection device 52 faces the placement position of the heated object. The temperature detection device 52 includes a second temperature sensor. The second temperature sensor can use a thermocouple or an NTC thermistor as the probe of the detection end. Unlike the first temperature sensor, the detection end of the second temperature sensor is located on the side of the heated object. Compared to the first temperature sensor, which is closer to the bottom of the heated object, the second temperature sensor is farther from the heating element 1. The second temperature sensor can reduce heat interference from the heating element 1, resulting in more accurate detection results.
[0061] As another embodiment 601 of embodiment 6, such as Figure 7 The heating component shown is suitable for electric kettles, tea makers, milk warmers and other electrical appliances. The detection support 5 can be equipped with a liquid level detection device 51 and a temperature detection device 52 at the same time. The liquid level detection device 51 and the temperature detection device 52 can be arranged vertically at intervals, so that the device can simultaneously detect the liquid level information and the temperature information of the heated object.
[0062] As another embodiment 603 of embodiment 601, such as Figure 8 The heating component shown is suitable for electric kettles, tea makers, milk warmers and other electrical appliances. The liquid level detection device 51 and the temperature detection device 52 can be arranged horizontally and alternately, so that the device can simultaneously detect the liquid level information and the temperature information of the heated object.
[0063] Example 7:
[0064] Based on any of the above embodiments, such as Figure 6 The heating assembly shown has a substrate 11 made of a brittle material. The substrate 11 is provided with a conductive heating layer 12 and a conductive protective layer 13. The conductive protective layer 13 includes a conductive layer 131 arranged in a ring around the outside of the conductive heating layer 12. One end of the conductive layer 131 has a first endpoint 132 and the other end of the conductive layer 131 has a second endpoint 133. There is a gap G between the first endpoint 132 and the second endpoint 133. The first endpoint 132 and the second endpoint 133 are respectively connected to an external electrical control device to form an electrical circuit.
[0065] More specifically, the conductive heating layer 12 includes a heating layer 121 for electric heating and an electrode layer 122 for connecting a power source, wherein the heating layer 121 can adopt one of a nano-metal oxide, a nano-semiconductor metal oxide, a graphene material, a carbon paste material, etc. as a material for forming a planar heating layer, preferably, the heating layer 121 adopts a nano-semiconductor metal oxide as a material for conductive heating, the laying thickness of the heating layer 121 and the laying thickness of the electrode layer 122 are both less than 1 mm, the nano-semiconductor metal oxide can adopt one of tin, antimony, nickel, ammonium, etc. or a combination of multiple materials as a nano-particle, when manufacturing, the nano-semiconductor metal oxide can be attached to the surface E of the substrate by physical vapor deposition (PVD), chemical vapor deposition (CVD), silk screen printing (SS), far infrared spectrum (FI), etc. After high-temperature sintering, a fixed heating area is formed. At least two separate electrode layers 122 are respectively located on both sides of the heating layer 121. The electrode layer 122 includes a first electrode 1221 and a second electrode 1222. The first electrode 1221 and the second electrode 1222 are respectively arranged on both sides of the heating layer 121 to facilitate the connection of an external electric control device for power supply and heating. Preferably, the electrode layer 122 can also adopt silver paste as a conductive material. The silver paste has high conductivity, can effectively conduct current, reduces power loss, and is easy to form on the surface of the substrate, facilitating processing and production.
[0066] More specifically, the conductive layer 131 is a conductive material attachment path formed on the substrate 11 in a circumferential manner around the heating area in the form of a coating, a thin film or an adhesive attachment. The conductive layer 131 adopts an open ring structure. The laying thickness of the conductive layer 131 is less than 1 mm. One end of the conductive layer 131 has a first end point 132. The other end of the conductive layer 131 has a second end point 133. The first end point 132 and the second end point 133 are both connection ends for connecting the conductive layer 131 to an external electric control device. After connecting the external electric control device, the first end point 132, the conductive layer 131, the second end point 133 and the external electric control device form a power supply circuit. When the conductive layer 131 is disconnected due to damage or fragmentation of the substrate 11, the power supply circuit will be disconnected, which will trigger the power-off protection mechanism of the external electric control device.
[0067] More specifically, the first end point 132 and the second end point 133 have a gap G. The size of the gap G determines the separation distance between the first end point 132 and the second end point 133. The gap G is provided to avoid short circuiting of the power supply circuit under normal circumstances.
[0068] As another embodiment 701 of embodiment 7, as Figure 6As shown, the substrate 11 can adopt one of the microcrystalline materials such as microcrystalline glass or microcrystalline ceramic as the production material, preferably, the substrate 11 adopts microcrystalline glass as the main production material, the surface of the microcrystalline glass appears static ions in high temperature state, when the temperature of the microcrystalline glass exceeds a certain degree, the microcrystalline glass may have conductive characteristics, on this basis, the first end point 132 extends the conductive lead wire towards the conductive heating layer 12 to shorten the distance between the conductive protective layer 13 and the conductive heating layer 12, when the microcrystalline glass appears the conductive characteristics at a certain temperature, the conductive heating layer 12 is connected to the conductive lead wire through the substrate 11, that is, the short circuit of the power supply loop is triggered, the power supply protection of the external electric control device is triggered, and the power supply protection of the overheat of the conductive heating layer 12 is realized.
[0069] As another embodiment 702 of the embodiment 7, since the conductive protective layer 13 of the power supply loop has the gap G, when the substrate 11 is damaged or broken, the path of the damage or the breakage just passes through the gap G, so that the conductive protective layer 13 is not easily disconnected, and there may be a case that the power supply protection is not triggered by the lucky avoidance of the conductive protective layer 13, as shown in a power supply protection switch, the conductive layer 131 extends from the first end point 132 and passes through the area between the second end point 133 and the center of the substrate 11, the conductive layer 131 surrounds the center of the substrate 11, so that the center of the substrate 11 and the outer edge of the substrate 11 have at least one surrounding ring structure formed by the conductive layer 131, more specifically, the surrounding ring structure around the center of the substrate 11 enables the conductive layer 131 to form a protective ring structure without obvious straight-through external gap, and the center of the substrate 11 and the outer edge of the substrate 11 no longer have a straight or nearly straight through gap, so that the power supply protection is not triggered by the lucky avoidance of the conductive protective layer 13 when the substrate 11 is damaged or broken, and the problem that the broken path is lucky to avoid the conductive protective layer 13 is effectively avoided, and the power supply protection is triggered by the disconnection of the conductive protective layer 13 when the substrate 11 is damaged or broken.
[0070] As another embodiment 703 (not shown) of the embodiment 7, different from the embodiment, the conductive layer 131 extends from the second end point 133 and passes through the area between the first end point 132 and the center of the substrate 11, and the conductive layer 131 surrounds the center of the substrate 11, so that the center of the substrate 11 and the outer edge of the substrate 11 have at least one surrounding ring structure formed by the conductive layer 131.
[0071] The above only further illustrates the technical content of the present application by means of the embodiments, so as to make the reader more easily understand, but does not represent that the embodiments of the present application are limited to this, any technical extension or re-creation made according to the present application is protected by the present application. The protection scope of the present application is subject to the claims.
Claims
1. A heating assembly, characterized by: The application relates to a heating device comprising a heating element (1) capable of being electrified to generate heat and a mounting base (2) for mounting the heating element (1), wherein the heating element (1) comprises a base material (11) for placing heated objects, and an electric control device for triggering power-off protection is electrically connected to the outside to form an electrification circuit, so that the electrification circuit is disconnected to trigger the power-off protection when the base material (11) is damaged.
2. A heating assembly according to claim 1, wherein: A supporting seat (3) for elastic buffering is mounted between the heating element (1) and the mounting base (2), a first elastic buffering element (31) for limiting the mounting position of the heating element (1) is mounted between the heating element (1) and the supporting seat (3), and a second elastic buffering element (32) for buffering stress is mounted between the supporting seat (3) and the mounting base (2).
3. A heating assembly according to claim 2, wherein: The first elastic buffering element (31) adopts a hollow ring structure and is sleeved on the outer side edge of the heating element (1), and the first elastic buffering element (31) respectively contacts the front face A, the side face B and the back face C of the heating element (1).
4. A heating assembly according to claim 2, wherein: The mounting base (2) is provided with a limiting hole (21) for limiting the mounting position of the supporting seat (3), the supporting seat (3) is provided with a limiting support column (33) for extending into the limiting hole (21), and the second elastic buffering element (32) is mounted between the limiting hole (21) and the limiting support column (33) and elastically abuts against the surface of the supporting seat (3).
5. A heating assembly according to claim 1, wherein: A heat insulation element (4) is mounted between the heating element (1) and the mounting base (2), the heat insulation element (4) is located close to the back face B of the heating element (1), and the maximum cross-sectional area of the heat insulation element (4) is greater than one half of the maximum cross-sectional area of the heating element (1).
6. A heating assembly according to claim 5, wherein: A temperature sensor for detecting the heating temperature is further arranged, the temperature sensor is located on the side of the heat insulation element (4) away from the heating element (1), and the detection end of the temperature sensor penetrates through the heat insulation element (4) and the heating element (1) and is close to the front face A of the heating element (1).
7. A heating assembly according to claim 1, wherein: The mounting base (2) is provided with a detection seat (5) close to the position where the heated objects are placed, the detection seat (5) is provided with liquid level detection devices (51) for detecting the liquid level information of the heated objects, and the detection end of the liquid level detection devices (51) is close to the position where the heated objects are placed. The detection seat (5) is further provided with temperature detection devices (52) for detecting the temperature information of the heated objects, and the detection end of the temperature detection devices (52) faces the position where the heated objects are placed.
8. A heating assembly according to claim 7, wherein: A contact assembly (6) for conducting the circuit of the heating element (1) is further arranged, the contact assembly (6) comprises first and second electrically-conductive deformation elements (61 and 62), the first and second electrically-conductive deformation elements (61 and 62) respectively elastically contact the electrode layer (122) of the heating element (1), and the first and second electrically-conductive deformation elements (61 and 62) are respectively connected to the external power supply to form the electrification circuit.
9. A heating assembly according to any one of claims 1 to 8, wherein: The base material (11) is made of a brittle material, the base material (11) is provided with a conductive heating layer (12) and a conductive protective layer (13), the conductive protective layer (13) comprises a conductive layer (131) arranged in a ring shape around the outer side of the conductive heating layer (12), one end of the conductive layer (131) has a first end point (132), the other end of the conductive layer (131) has a second end point (133), the first end point (132) and the second end point (133) have a gap G therebetween, and the first end point (132) and the second end point (133) respectively communicate with external electrical control equipment to form a power supply circuit.
10. A heating assembly according to claim 9, wherein: The heating material of the conductive heating layer (12) can be one of nanometer metal oxide, nanometer semiconductor metal oxide, graphene material and carbon paste material to form a planar heating layer.