Dry-burning-resistant temperature sensing device with high-stability temperature measurement

Abstract

The utility model belongs to the technical field of kitchen ware accessories, and provides a high-stability temperature measurement anti-dry-burning temperature sensing device which comprises a heat insulation protective sleeve assembly, a temperature sensing assembly and a wire conduit. The temperature sensing assembly is arranged at the top of the heat insulation protective sleeve assembly; the wire conduit is arranged in the heat insulation protective sleeve assembly, one end of the temperature sensing assembly is provided with two strands of wire pieces, and the wire conduit is provided with a wire pipeline for the two strands of wire pieces to penetrate through independently; one end of the wire conduit is in contact with the temperature sensing assembly; the wire conduit is made of a high-temperature-resistant insulating non-metal material. When the cooker works normally, the temperature sensing assembly is stressed to be hidden in the heat insulation protective sleeve assembly after making contact with the bottom of the cooker, the situation that external flame temperature directly or indirectly transmits heat to the temperature sensing probe can be avoided, and therefore the accuracy of actual temperature detection of the cooker by the temperature sensing probe is guaranteed, and the heat insulation and protection effects on the temperature sensing assembly can be achieved; and an arranged wire conduit can play a role in protecting an internal wire piece, so that the service life of the whole device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchenware accessories, and particularly relates to a dry-burning prevention temperature sensing device with high stability for temperature measurement. Background Technique

[0002] In recent years, with the improvement of people's safety awareness and the rise of intelligent cooking, the dry-burning prevention technology in the stove industry has developed rapidly. Currently, the existing dry-burning prevention stoves basically adopt the mature dry-burning prevention probe contact induction technology, and its working principle is roughly as follows: The gas stove heats the food in the pot, the temperature of the food in the pot is reflected on the bottom of the pot through the cookware, the dry-burning prevention probe in close contact with the bottom of the pot detects the temperature of the bottom of the pot, and converts the temperature signal into an electrical signal and feeds it back to the main controller in real time. The main controller analyzes and judges the signal. When the temperature of the bottom of the pot exceeds the set normal use temperature, the main controller judges that the cookware has a dry-burning overheat phenomenon, sends an action signal to the gas valve of the stove, and closes the gas passage to achieve the function of dry-burning prevention protection.

[0003] In order to install the dry-burning prevention probe and ensure the accuracy of the probe test, the traditional dry-burning prevention probe is installed in the center of the burner. However, the current dry-burning prevention technology has the following defects: Since the dry-burning prevention device is generally installed in the center of the stove burner and the flame surrounds it during normal operation, certain requirements are put forward for the temperature resistance and heat insulation performance of the dry-burning prevention device. The outer protective shell of the dry-burning prevention device generally uses high-temperature resistant and corrosion-resistant stainless steel materials, but there are still great drawbacks in the insulating protection performance of the internal wires.

[0004] Currently, the internal wire insulation protection of the dry-burning prevention devices on the market generally uses high-temperature resistant organic materials, and then a glass fiber tube is sleeved outside. However, as the use time accumulates, the outer glass fiber tube begins to powder and break under the influence of high-temperature thermal radiation, and the internal organic material insulation layer also begins to carbonize and fall off. When the metal core wire of the wire is exposed, it is easy to cause a short circuit and thus generate a malfunction; when the stove is normally produced, with the repeated compression and reset actions of the elastic components inside the temperature sensing device, the wires will also agglomerate and stretch under the action of the friction force on the pipe wall, further increasing the frequency of short circuits and even causing the wires to break. Secondly, in order to ensure the timeliness of temperature measurement, the cap covering the protective thermistor at the top of the dry-burning prevention device generally also uses stainless steel metal material. When the stove is working normally, there is no good heat insulation effect between the top probe part and the metal outer heat insulation sleeve. When the probe contacts the outer heat insulation protective sleeve, the external flame will indirectly transfer the temperature to the temperature sensing probe; even if there is no contact, due to the high thermal conductivity of the metal itself, the external flame temperature will also be indirectly transferred to the temperature sensing probe, thus affecting the accuracy of the temperature sensing probe in measuring the actual temperature of the bottom of the cookware. Content of the Utility Model

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a dry-burning prevention temperature-sensing device with high stability for temperature measurement.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows:

[0007] A dry-burning prevention temperature-sensing device with high stability for temperature measurement, comprising a heat insulation protection sleeve assembly, a temperature-sensing assembly, and a wire conduit;

[0008] The temperature-sensing assembly is arranged at the top of the heat insulation protection sleeve assembly;

[0009] The wire conduit is arranged inside the heat insulation protection sleeve assembly. One end of the temperature-sensing assembly is provided with two wire components, and the wire conduit is provided with a wire conduit for the two wire components to pass through independently;

[0010] One end of the wire conduit is in contact with the temperature-sensing assembly;

[0011] The wire conduit is made of a high-temperature resistant and insulating non-metallic material.

[0012] Preferably, a first limiting member is arranged inside the heat insulation protection sleeve assembly, and a first elastic element is arranged between the temperature-sensing assembly and the first limiting member;

[0013] The heat insulation protection sleeve assembly has an opening for one end of the temperature-sensing assembly to pass through. The other end of the temperature-sensing assembly is provided with a limiting portion to prevent the temperature-sensing assembly from passing out of the opening. When the first elastic element is in a natural state, one end of the temperature-sensing assembly is higher than the end of the opening;

[0014] The heat insulation protection sleeve assembly includes an upper heat insulation sheath, a lower heat insulation sheath, and an inner heat insulation sheath. The upper heat insulation sheath is made of a high-temperature resistant and insulating non-metallic material;

[0015] The lower end of the upper heat insulation sheath is connected to the upper end of the lower heat insulation sheath. The inner heat insulation sheath is inside the lower heat insulation sheath. The opening is at the upper end of the upper heat insulation sheath, and the first limiting member is arranged at the lower end of the upper heat insulation sheath;

[0016] The lower end of the lower heat insulation sheath is provided with a guiding flange member;

[0017] It further includes a second elastic element, a second limiting member, a sliding sleeve, and a wire conduit;

[0018] The sliding sleeve is arranged through the guiding flange member. The second limiting member is arranged at the top of the sliding sleeve and inside the inner heat insulation sheath;

[0019] The wire conduit is arranged through the inner heat insulation sheath and the sliding sleeve. The upper end of the wire conduit is connected to the temperature-sensing assembly;

[0020] The second limiting member is provided with a connection hole for the wire conduit to pass through;

[0021] The second elastic element is located inside the inner heat insulation sheath. One end of the second elastic element is connected to the first limiting member, and the other end is connected to the second limiting member.

[0022] Preferably, the guiding flange member has a T-shaped structure, and the large-sized end of the guiding flange member is fixedly connected to the inner wall surface of the lower heat insulation sheath by welding.

[0023] Preferably, the elasticity of the second elastic element is greater than that of the first elastic element.

[0024] Preferably, the temperature sensing assembly includes a cap, a temperature sensing portion, and a temperature measuring sensor. The temperature sensing portion is provided on the top of the cap, the temperature measuring sensor is provided on the cap, the cap passes through the opening portion, and the limiting portion is an annular clamping cap brim provided at the bottom edge of the cap.

[0025] Compared with the prior art, the beneficial effects of the present utility model include:

[0026] In the high-stability temperature-measuring anti-dry-burning temperature sensing device of the present application, the temperature sensing assembly is provided on the top of the heat insulation protection sleeve assembly. During operation, under the dual action of the first elastic element and the second elastic element, the temperature sensing assembly fully contacts the bottom of the pot and will be hidden inside the heat insulation protection sleeve assembly. The heat insulation protection sleeve assembly plays a role of heat insulation and protection for the temperature sensing assembly, and the measurement is more accurate. At the same time, the provided wire conduit can play a role of protection and isolation for the internal wire components, and can effectively solve the short-circuit fault caused by the failure of the wire insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model.

[0029] Figure 2 It is a schematic three-dimensional diagram of the present utility model.

[0030] Figure 3 It is a schematic structure diagram of the upper heat insulation sheath of the present utility model.

[0031] Figure 4 It is a schematic structure diagram of the guiding flange member of the present utility model.

[0032] Figure 5 This is a schematic structural diagram of the wire conduit of the present utility model.

[0033] Wherein:

[0034] 1 - upper heat insulation sheath, 2 - cap, 2 - 1 - temperature sensing part, 2 - 2 - clamping cap brim, 3 - first limiting member, 4 - temperature measuring sensor, 5 - first elastic element, 6 - wire member, 7 - second elastic element, 8 - connection hole, 9 - second limiting member, 10 - sliding sleeve, 11 - guiding flange member, 12 - wire conduit, 13 - inner heat insulation sheath, 14 - lower heat insulation sheath. Specific embodiments

[0035] In order to more clearly understand the above - mentioned objects, features and advantages of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model.

[0037] Embodiment:

[0038] As Figures 1-5 shown, in this embodiment, a dry - burning - proof temperature - sensing device with high - stability temperature measurement is provided, which includes a heat insulation protection sleeve assembly, a temperature - sensing assembly and a first elastic element 5;

[0039] The temperature - sensing assembly is arranged in the heat insulation protection sleeve assembly and is in sliding fit with the heat insulation protection sleeve assembly;

[0040] A first limiting member 3 is arranged in the heat insulation protection sleeve assembly, and the first elastic element 5 is arranged between the temperature - sensing assembly and the first limiting member 3;

[0041] The heat insulation protection sleeve assembly has an opening through which one end of the temperature - sensing assembly passes. The other end of the temperature - sensing assembly is provided with a limiting portion to prevent the temperature - sensing assembly from passing through the opening. When the first elastic element 5 is in a natural state, one end of the temperature - sensing assembly is higher than the end of the opening.

[0042] The high-stability temperature-measuring dry-burning prevention temperature-sensing device of this embodiment has its temperature-sensing component arranged at the top of the heat-insulating protective sleeve component. Specifically, when the cooking appliance is working properly, after the temperature-sensing component contacts the bottom of the pot, it is forced to hide inside the heat-insulating protective sleeve component, which can prevent the external flame temperature from directly or indirectly transferring heat to the temperature-sensing probe, thereby ensuring the accuracy of the temperature-sensing probe in detecting the actual temperature of the cookware, playing a role in heat insulation and protection for the temperature-sensing component. At the same time, the first elastic element 5 is provided to ensure that in the natural state, one end of the temperature-sensing component is always in the extended state, ensuring that it can fully contact the measuring part of the bottom of the pot during measurement use and guaranteeing the accuracy of the measurement. The limiting part can also play a role in limiting and protecting the temperature-sensing component, improving the service life of the entire device.

[0043] The heat-insulating protective sleeve component of this embodiment specifically includes an upper heat-insulating sleeve 1, a lower heat-insulating sleeve 14, and an inner heat-insulating sleeve 13. Among them, the material of the upper heat-insulating sleeve 1 is a high-temperature resistant and insulating non-metallic material, specifically, it can be composed of one or several of refractory materials such as cordierite, mullite, alumina, and talc.

[0044] The lower end of the upper heat-insulating sleeve 1 is connected to the upper end of the lower heat-insulating sleeve 14. The inner heat-insulating sleeve 13 is inside the lower heat-insulating sleeve 14, and the opening part is at the upper end of the upper heat-insulating sleeve 1. The first limiting member 3 is arranged at the lower end of the upper heat-insulating sleeve 1.

[0045] The lower end of the lower heat-insulating sleeve 14 is provided with a guiding flange member 11.

[0046] Specifically, the guiding flange member 11 is of a T-shaped structure, and the large-size end of the guiding flange member 11 is fixedly connected to the inner wall surface of the lower heat-insulating sleeve 14 by welding.

[0047] The specific structure of this embodiment further includes a second elastic element 7, a second limiting member 9, a sliding sleeve 10, and a wire conduit 12.

[0048] The wire conduit 12 is made of a high-temperature resistant and insulating non-metallic material, specifically ceramic material.

[0049] The sliding sleeve 10 is arranged through the guiding flange member 11, and the second limiting member 9 is arranged at the top of the sliding sleeve 10 and inside the inner heat-insulating sleeve 13.

[0050] The wire conduit 12 is arranged through the inner heat-insulating sleeve 13 and the sliding sleeve 10, and the upper end of the wire conduit 12 is connected to the temperature-sensing component.

[0051] The second limiting member 9 is provided with a connection hole 8 for the wire conduit 12 to pass through, and the first limiting member 3 is also provided with a connection hole 8 for the wire conduit 12 to pass through.

[0052] The second elastic element 7 is located inside the inner heat insulation sheath 13. One end of the second elastic element 7 is connected to the first limiting member 3, and the other end is connected to the second limiting member 9.

[0053] Specifically, the elasticity of the second elastic element 7 is greater than that of the first elastic element 5.

[0054] Specifically, a wire component 6 is provided inside the wire conduit 12, and one end of the wire component 6 is connected to the temperature sensing component.

[0055] Specifically, the number of wire components 6 is two, and the wire conduit 12 is provided with wire conduit channels corresponding to the number of wire components 6. Each wire conduit channel is provided with a wire component 6.

[0056] In this embodiment, the wire conduit 12 is provided with two wire conduit channels, which isolate and separate the two wire components 6, effectively solving the short - circuit fault caused by the failure of the wire insulation layer. At the same time, the wire conduit 12 is made of ceramic material, which has higher heat - resistant performance and heat insulation effect, and can more effectively protect the conduction performance of the wire. Because the wire conduit 12 is made of ceramic material, it has rigid performance. When in the daily working state, the cooking utensil exerts a downward pressure on the temperature sensing component, causing the temperature sensing component to move downward and be compressed after overcoming the elastic forces of the first elastic element 5 and the second elastic element 7. The wire conduit 12 can form a guiding bearing function inside, effectively solving the disadvantages of the original glass fiber tube powdering and the wire softening, resulting in agglomeration or even breakage.

[0057] Specifically, the temperature sensing component includes a cap 2, a temperature sensing part 2 - 1 and a temperature measuring sensor 4. The temperature sensing part 2 - 1 is arranged on the top of the cap 2, the temperature measuring sensor 4 is arranged on the cap 2, the cap 2 passes through the opening part, and the limiting part is an annular clamping cap brim 2 - 2 provided at the bottom edge of the cap 2. Specifically, the wire component 6 is connected to the temperature measuring sensor 4.

[0058] The working principle of the anti - dry - burning temperature sensing device in this embodiment is as follows:

[0059] During the process of placing the cooking utensil on the pot rack, the temperature sensing part 2 - 1 on the top of the cap 2 of the temperature sensing component contacts the bottom of the cooking utensil and moves downward against the elastic force of the first elastic element 5, and finally retracts and hides inside the upper heat insulation sheath 1. The temperature sensing part 2 - 1 contacts the temperature measuring sensor 4. Under the protection of the upper heat insulation sheath 1, the temperature sensing component is protected from the interference of the external flame temperature. At the same time, because the upper heat insulation sheath 1 is made of ceramic material, its thermal conductivity is much lower than that of metal materials, which also reduces the indirect transfer of the external flame temperature to the temperature sensing component, thus affecting the accurate detection of the actual temperature of the bottom of the cooking utensil by the temperature sensing component.

[0060] Subsequently, under the action of the gravity of the cooking utensil, the temperature sensing component acts on the wire conduit 12 and the wire member 6 to move downward synchronously. The second elastic element 7 is continuously compressed, and the wire conduit 12 and the wire continue to move vertically downward into the sliding sleeve 10 until the cooking utensil is placed and supported on the pot rack. Since during the working process, the wire member 6 connected to the temperature sensing component is always under the protection of the independent channel of the wire conduit 12, the adverse effect of short circuit caused by the insulation layer failure of the wire member 6 connected to the temperature sensing component is effectively avoided. At the same time, the disadvantages of short circuit caused by the aggregation of the wire member 6 and failure caused by wire breakage are also avoided. This device is beneficial for the temperature sensing component to accurately measure the temperature of the cooking utensil stably for a long time, and avoids the phenomenon of misoperation caused by short circuit easily occurring after the metal core wire of the wire is exposed.

[0061] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A dry-burning-proof temperature-sensing device for high-stability temperature measurement, characterized in that, Comprising: A heat insulation protective sleeve assembly, a temperature sensing assembly, and a wire conduit; The temperature sensing assembly is disposed at the top of the heat insulation protective sleeve assembly; The wire conduit is disposed within the heat insulation protective sleeve assembly. One end of the temperature sensing assembly is provided with two wire members, and the wire conduit is provided with a wire duct for the two wire members to pass through independently; One end of the wire conduit is in contact with the temperature sensing assembly; The wire conduit is made of a high-temperature resistant and insulating non-metallic material.

2. The anti-dry-burning temperature-sensing device for high-stability temperature measurement according to claim 1, wherein, A first limiting member is disposed within the heat insulation protective sleeve assembly, and a first elastic element is disposed between the temperature sensing assembly and the first limiting member; The heat insulation protective sleeve assembly has an opening through which one end of the temperature sensing assembly passes. The other end of the temperature sensing assembly is provided with a limiting portion to prevent the temperature sensing assembly from passing out of the opening. When the first elastic element is in a natural state, one end of the temperature sensing assembly is higher than the end of the opening; The heat insulation protective sleeve assembly includes an upper heat insulation sheath, a lower heat insulation sheath, and an inner heat insulation sheath. The upper heat insulation sheath is made of a high-temperature resistant and insulating non-metallic material; The lower end of the upper heat insulation sheath is connected to the upper end of the lower heat insulation sheath. The inner heat insulation sheath is within the lower heat insulation sheath. The opening is at the upper end of the upper heat insulation sheath, and the first limiting member is disposed at the lower end of the upper heat insulation sheath; The lower end of the lower heat insulation sheath is provided with a guiding flange member; It further includes a second elastic element, a second limiting member, a sliding sleeve, and a wire conduit; The sliding sleeve is disposed through the guiding flange member. The second limiting member is disposed at the top of the sliding sleeve and within the inner heat insulation sheath; The wire conduit is disposed through the inner heat insulation sheath and the sliding sleeve. The upper end of the wire conduit is connected to the temperature sensing assembly; The second limiting member is provided with a connection hole for the wire conduit to pass through; The second elastic element is within the inner heat insulation sheath. One end of the second elastic element is connected to the first limiting member, and the other end is connected to the second limiting member.

3. The anti-dry-burning temperature-sensing device for high-stability temperature measurement according to claim 2, characterized in that, The guiding flange member is of a T-shaped structure, and the large-sized end of the guiding flange member is fixedly connected to the inner wall surface of the lower heat insulation sheath by welding.

4. The anti-dry burning temperature sensing device for high-stability temperature measurement according to claim 2, characterized in that, The elasticity of the second elastic element is greater than the elasticity of the first elastic element.

5. The anti-dry burning temperature sensing device with high stability temperature measurement according to claim 2, characterized in that, The temperature sensing assembly includes a cap, a temperature sensing portion, and a temperature measuring sensor. The temperature sensing portion is disposed at the top of the cap. The temperature measuring sensor is disposed on the cap. The cap passes through the opening, and the limiting portion is an annular clamping cap brim provided at the bottom edge of the cap.

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