Patent Application
20240167892
The disclosure relates to a self-powered thermal probe for cooking.
The statement here merely aims to provide background information related to the invention and does not necessarily constitute the prior art.
Thermal probes for cooking, also referred to as probe-type temperature gauges, are inserted into food, placed on barbeque grills, or used in other application scenarios to detect the temperature during the cooking process to determine the cooking degree of food according to the temperature, so as to prevent the food from being cooked insufficiently or excessively and eliminate to the maximum extent health and safety hazards caused by insufficient or excessive cooking of food. However, existing thermal probes for cooking generally use a disposable battery or a battery charged by a charging case as a power supply. In a case where the disposable battery is used, the battery needs to be replaced frequently, leading to a waste of resources and a high use cost. In a case where the battery charged by a charging case is used, a rechargeable effect is realized, the charging box must be used to charge the battery, and a self-powered function cannot be realized, leading to some limitations in use.
The inventor realizes that there is not yet a self-powered thermal probe for cooking at present.
In view of this, the invention adopts the following technical solution:
A self-powered thermal probe for cooking comprises a fixing cover, a mounting shell, a probe tube, a first heat conducting block, a temperature-difference power generation piece, a second heat conducting block, a PCB, a temperature sensor and a battery, wherein the mounting shell has an end connected to the fixing cover and an end connected to the probe tube;
the first heat conducting block, the temperature-difference power generation piece and the second heat conducting block are all arranged in the mounting shell, and the PCB is received in the probe tube and partially extends into the mounting shell;
the first heat conducting block and the second heat conducting block are respectively arranged on a hot surface and a cold surface of the temperature-difference power generation piece, the PCB located in the mounting shell is arranged between the temperature-difference power generation piece and the second heat conducting block, and the temperature-difference power generation piece, the temperature sensor and the battery are all electrically connected to the PCB.
In some embodiments, the temperature-difference power generation piece is a ceramic power generation piece or a semiconductor power generation piece.
In some embodiments, the first heat conducting block and the second heating conducting block are metal parts.
In some embodiments, the probe tube is a stainless steel part.
In some embodiments, the fixing cover is an electrically conductive metal screw, and the mounting shell is a plastic part.
In some embodiments, the temperature sensor is an NTC temperature sensing element, and the battery is farad capacitor or a lithium battery.
In some embodiments, the self-powered thermal probe for cooking further comprises fixing elastic pieces for fixing the PCB, the number of the fixing elastic pieces is two, and the two fixing elastic pieces are symmetrically arranged on two sides of the PCB.
In some embodiments, the fixing elastic pieces are made from an elastically conductive metal material.
In some embodiments, each fixing elastic piece comprises a fixing end, an inclined bent end and an abutting end which are formed integrally, and the fixing end is connected to the abutting end through the inclined bent end and is connected to the PCB.
In some embodiments, the inclined bent end is an acute bent end.
In some embodiments, the self-powered thermal probe for cooking further comprises a contact pin, a pin mounting notch is arranged between the second heat conducting block and the fixing cover, the contact pin is arranged in the pin mounting notch, and the PCB and the fixing cover are connected through the contact pin.
In some embodiments, the temperature sensor is arranged close to a front end of the PCB, and the fixing elastic pieces are located between the temperature sensor and the battery.
In some embodiments, the self-powered thermal probe for cooking further comprises a silicone sealing ring, a probe tube flange is arranged at an end, close to the mounting shell, of the probe tube, and the silicone sealing ring is arranged on a side, close to the probe tube, of the probe tube flange.
In some embodiments, an extension end is arranged at an end, close to the probe tube, of the second heat conducting block and located in the probe tube.
Compared with the prior art, the invention has the following beneficial effects: the first heat conducting block and second heat conducting block are respectively arranged on the hot surface and the cold surface of the temperature-difference power generation piece 5 to generate electric energy, and the electric energy is then stored in the battery to be used, making the thermal probe for cooking self-powered; moreover, the self-powered thermal probe for cooking is reasonable and efficient in overall structure and easy to implement, the user-friendly design degree and intelligent level of the thermal probe are effectively improved, and limitations of the thermal probe in use are effectively reduced.
Reference signs: 1, fixing cover; 2, mounting shell; 3, probe tube; 4, first heat conducting block; 5, temperature-difference power generation piece; 6, second heat conducting block; 601, extension end; 7, PCB; 8, probe tube flange; 9, silicone sealing ring; 10, nano-heat insulation layer; 11, temperature sensor; 12, fixing elastic piece; 121, fixing end; 122, inclined bent end; 123, abutting end; 13, battery; 14, contact pin; 15, pin mounting notch.
In the description of the invention, directional descriptions, if any, such as “upper”, “lower”, “front”, “back”, “left” and “right” are used to indicate directional or positional relationships based on the accompanying drawings merely for the purpose of facilitating and simplifying the description of the invention, do not indicate or imply that devices or elements refereed to must be in a specific direction or be configured and operated in a specific direction, and thus should not be construed as limitations of the invention. If one technical feature is referred to as being “arranged on”, “fixed to”, “connected to” or “mounted on” the other technical feature, it may be directly arranged on, fixed to, connected to or mounted on the other technical feature, or indirectly arranged on, fixed to, connected to, or mounted on the other technical feature.
In the description of the invention, “a plurality of”, if any, means one or more; “multiple’, if any, refers to two or more; “greater than”, “less than” and “exceed”, if any, all should be construed as not including the number involved; “over”, “below” and “within”, if any, should be construed as including the number involved. Terms such as “first” and “second”, if any, are merely used for distinguishing the names of identical or similar technical features, and do not imply/indicate the relative importance of the technical features, the number of the technical features and the precedence relationship of the technical features.
Preferred embodiments of the invention will be described in further detail below in conjunction with accompanying drawings.
As shown in
The first heat conducting block 4, the temperature-difference power generation piece 5 and the second heat conducting block 6 are all arranged in the mounting shell 2, and the PCB 7 is received in the probe tube 3 and partially extends into the mounting shell 2.
The temperature-difference power generation piece 5 may be a ceramic power generation piece, or other semiconductor power generation pieces such as a silicon power generation piece. The first heat conducting block 4 and the second heat conducting block 6 are respectively arranged on a hot surface and a cold surface of the temperature-difference power generation piece 5 respectively. The PCB 7 located in the mounting shell 2 is arranged between the temperature-difference power generation piece 5 and the second heat conducting block 6. The temperature-difference power generation piece 5 is electrically connected to the PCB 7.
The probe tube 3 is generally an alloy part, preferably a stainless steel part (such as a 304 stainless steel part), and has the advantages of being anti-rust, anti-oxidation, safer, healthier, and the like.
The battery 13 is arranged at an end, away from the mounting shell 2, of the PCB 7 and electrically connected to the PCB 7, and the temperature sensor 11 is arranged in the probe tube 3 and electrically connected to the PCB 7.
In this embodiment, the first heat conducting block 4 and the second heat conducting block 6 are generally made from a metal material. In this way, a high temperature can be transferred from the outside to the hot surface of the temperature-difference power generation piece 5 by the first heat conducting block 4, and then the temperature-difference power generation piece 5 converts a temperature difference into electric energy, which is stored in the battery 13. One end of the PCB 7 is arranged close to the cold surface of the temperature-difference power generation piece 5 to prevent high-temperature damage to the PCB 7, thus guaranteeing the working stability of the PCB 7. The self-powered thermal probe for cooking is reasonable and efficient in overall structure and easy to implement, the user-friendly design degree and intelligent level of the thermal probe are effectively improved, and limitations of the thermal probe in use are effectively reduced.
In this embodiment, the fixing cover 1 is preferably a stainless steel fixing screw or an electrically conductive metal screw and used for fixing the mounting shell 2. In some scenarios, the fixing cover 1 may be used as a positive pole for charging the battery 13.
The mounting shell 2 is generally a plastic part, so the thermal probe can be pinched up easily in use, hand scalds caused by metal are avoided, and the influence of the configuration of an all-metal thermal probe on the performance of a contact pin 14 described below is also avoided.
The temperature sensor 11 may be an NTC temperature sensing element or other temperature sensing elements. The battery 13 may be a farad capacitor (preferably a super farad capacitor) or a lithium battery (a rechargeable lithium battery). Of course, the battery 13 may also be other batteries on the market (such as lead-acid batteries or carbon batteries).
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Preferably, as shown in
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Further, the fixing elastic pieces 12 are arranged between the temperature sensor 11 and the battery 13 to isolate to some extent the temperature sensor 11 from the battery 13, thus reducing the influence of the battery 13 on the temperature detection process and improving the temperature detection accuracy.
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The key design point of the invention is that the first heat conducting block and the second heat conducting block are respectively arranged on the hot surface and the cold surface of the temperature-difference power generation piece 5 to generate electric energy, and the electric energy is then stored in the battery to be used, thus making the thermal probe for cooking self-powered; moreover, the self-powered thermal probe for cooking is reasonable and efficient in overall structure and easy to implement, the user-friendly design degree and intelligent level of the thermal probe are effectively improved, and limitations of the thermal probe in use are effectively reduced.
The above specific embodiments are preferred ones of the invention and are not intended to limit the specific implementation scope of the invention. The scope of the invention is not limited to the above specific embodiments. All equivalent changes made according to the shape and structure of the invention should also fall within the protection scope of the invention.
