Temperature sensor and gas stove

Abstract

The application discloses a temperature sensor and a gas stove, wherein the temperature sensor comprises a sensor body extending in the up-down direction and a heat protection cover comprising a fixed ring part extending radially outward of the sensor body and a heat protection ring part extending in the up-down direction, the inner ring edge of the fixed ring part is fixedly connected with the sensor body, the heat protection ring part is spacedly sleeved on the outside of the upper end of the sensor body, and the lower end of the heat protection ring part is connected with the fixed ring part; at least the heat protection ring part of the heat protection cover can be detached relative to the sensor body. The technical scheme of the application can improve the cleaning convenience of the dust or oil stains and other pollutants in the heat protection cover of the temperature sensor.

Description

[0001] This application is a divisional application of application number 201811092141.5, with the parent application filed on September 18, 2018; the invention is titled: Temperature Sensor and Gas Stove. Technical Field

[0002] This invention relates to the field of gas stove technology, and in particular to a temperature sensor and a gas stove. Background Technology

[0003] In gas stoves, a temperature sensor is typically installed in the center of the burner to detect the temperature of the pot bottom, determining whether it's dry-burning or if the pot's temperature corresponds to the optimal temperature for the food being cooked. However, during actual measurements, the sensor's readings can be higher than the actual pot bottom temperature due to flame radiation and crosswinds that cause the flame to tilt and scorch the sensor, compromising accuracy. Currently, a heat shield is usually welded to the temperature sensor to improve its accuracy. Typically, this heat shield is open and facing upwards, allowing dust, grease, and other contaminants to accumulate inside. Because the heat shield is welded in place, cleaning these contaminants is difficult. Summary of the Invention

[0004] The main objective of this invention is to provide a temperature sensor that improves the ease of cleaning contaminants such as dust or oil stains inside its thermal shield.

[0005] To achieve the above objectives, the temperature sensor proposed in this invention is used in a gas stove and includes:

[0006] The sensor body extends vertically; and

[0007] A heat shield includes a fixing ring extending radially outward along the sensor body and a heat protection ring extending vertically. The inner ring edge of the fixing ring is connected and fixed to the sensor body. The heat protection ring is spaced out and sleeved on the outside of the upper end of the sensor body, and the lower end of the heat protection ring is connected to the fixing ring.

[0008] For the heat shield, at least the heat shield ring can be detached from the sensor body.

[0009] Optionally, the heat protection ring can be detachably connected to the fixing ring.

[0010] Optionally, the fixing ring portion is provided with a plurality of opening slots, and the lower end of the heat protection ring portion is provided with a plurality of snap-fit ​​protrusions corresponding one-to-one with the plurality of opening slots. The connection between the snap-fit ​​protrusions and the lower end of the heat protection ring portion is provided with a side-opening snap groove. The snap-fit ​​protrusions pass through the opening slots and snap onto the edge of the opening slots through the snap grooves, thereby fixing the heat protection ring portion onto the fixing ring portion.

[0011] Optionally, the thermal protection ring is interference-fitted to the fixing ring.

[0012] Optionally, the outer edge of the fixing ring is provided with a downwardly extending first flange, and the connection between the first flange and the fixing ring is formed with an inwardly recessed limiting step, and the lower end of the heat protection ring is interference-fitted to the limiting step.

[0013] Optionally, the fixing ring can be detachably installed on the sensor body.

[0014] Optionally, the thermal protection ring and the fixing ring are integrally formed, and the fixing ring is detachably connected to the sensor body.

[0015] Optionally, the fixing ring is interference-fitted onto the sensor body.

[0016] Optionally, the inner edge of the fixing ring is provided with a downwardly extending second flange, which is interference-fitted to the sensor body.

[0017] Optionally, the upper surface of the thermal protection ring is lower than the upper surface of the sensor body.

[0018] Optionally, the height difference between the upper end face of the thermal protection ring and the upper end face of the sensor body ranges from 0.3 mm to 0.6 mm.

[0019] Optionally, the upper end of the heat protection ring is provided with an annular flange extending inward or outward.

[0020] Optionally, the annular flange extends inward, and there is a gap between the inner edge of the annular flange and the outer surface of the sensor body, the gap being in the range of 0.5mm to 1.5mm.

[0021] Optionally, the thermal protection ring includes a first ring segment, a second ring segment, and a third ring segment connected sequentially from top to bottom. The inner diameter of the first ring segment is larger than the inner diameter of the third ring segment, and the second ring segment is configured as a tapering segment that gradually decreases from top to bottom; or

[0022] The thermal protection ring includes a first ring segment, a second ring segment, and a third ring segment connected sequentially from top to bottom. The inner diameter of the first ring segment is smaller than the inner diameter of the third ring segment, and the second ring segment is configured as a gradually expanding segment from top to bottom; or

[0023] The thermal protection ring is arranged in a straight cylindrical shape.

[0024] Optionally, the fixing ring is provided with a plurality of leakage holes located inside the thermal protection ring and arranged vertically through it.

[0025] To achieve the above objectives, the present invention also proposes a gas stove, including the aforementioned temperature sensor.

[0026] In the technical solution of this invention, the heat protection ring is spaced and sleeved on the outside of the upper end of the sensor body. This effectively prevents the combustion flame from directly burning the upper end of the sensor body and prevents the high temperature generated by the burner from radiating to the upper end of the sensor body, so that the temperature sensor can accurately measure the temperature of the bottom of the pot, rather than the temperature of the flame. In particular, it can eliminate the influence of the flame on the temperature sensor caused by crosswinds, so that the temperature sensor measurement value remains stable. In addition, in this technical solution, the heat protection ring can be detached from the sensor body. Thus, when a lot of dust or oil stains or other contaminants accumulate in the gap between the heat protection ring and the sensor body, the heat protection ring or the heat protection ring together with the fixing ring can be removed from the sensor body to facilitate the cleaning of dust or oil stains and other contaminants, thereby avoiding the phenomenon that excessive accumulation of dust or oil stains and other contaminants will cause the temperature sensor to fail. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a partial cross-sectional structural schematic diagram of an embodiment of the gas stove of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the first embodiment of the temperature sensor of the present invention;

[0030] Figure 3 for Figure 2 A schematic diagram of the thermal protection cover for a medium-temperature sensor;

[0031] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 This is a schematic diagram of the structure of the heat shield of the second embodiment of the temperature sensor of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the third embodiment of the temperature sensor of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the fourth embodiment of the temperature sensor of the present invention;

[0035] Figure 8 This is a schematic diagram of the fifth embodiment of the temperature sensor of the present invention.

[0036] Explanation of icon numbers:

[0037] label name label name 10 Sensor body 20 Thermal shield 21 Fixed ring 210 Opening groove 211 First flip 212 Limiting step 213 Second flip 214 Leakage hole 22 Thermal protection ring 220 snap-fit ​​protrusion 220a Card slot 221 First section 222 Second Ring Section 223 Third Ring Road 224 Circular flange 30 burner

[0038] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0041] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0042] This invention discloses a temperature sensor and a gas stove incorporating the temperature sensor. Without loss of generality, see reference [link to previous invention]. Figure 1The temperature sensor is typically installed at the center of the burner 30 of the gas stove and is used to detect the temperature of the bottom of the pot above the burner 30 to determine whether the bottom of the pot is dry-burning or whether the temperature of the bottom of the pot corresponds to the optimal temperature for cooking the food. Of course, for some gas stoves, the temperature sensor can also be placed at the edge of the burner 30, as long as it can detect the temperature of the bottom of the pot above the burner 30.

[0043] Reference Figure 2 In one embodiment of the present invention, the temperature sensor includes a sensor body 10 and a thermal shield 20. The sensor body 10 extends vertically, and the thermal shield 20 includes a fixing ring 21 extending radially outward along the sensor body 10 and a thermal shield 22 extending vertically. The inner edge of the fixing ring 21 is fixedly connected to the sensor body 10, and the thermal shield 22 is spaced and sleeved on the outer side of the upper end of the sensor body 10, with the lower end of the thermal shield 22 connected to the fixing ring 21. In this embodiment, the thermal shield 20, at least, has a thermal shield 22 that can be detached from the sensor body 10. It should be noted that "the thermal shield 22 can be detached from the sensor body 10" means that the thermal shield 22 can be removed from the sensor body 10; it can be that only the thermal shield 22 is removed, or the fixing ring 21 and the thermal shield 22 can be removed together. In addition, in this embodiment, the heat shield 20 is typically made of a rigid and high-temperature resistant material, such as, but not limited to, a metal material.

[0044] In the technical solution of this invention, the heat protection ring 22 is spaced and sleeved on the outside of the upper end of the sensor body 10. This effectively prevents the combustion flame from directly burning the upper end of the sensor body 10 and prevents the high temperature generated by the burner from radiating to the upper end of the sensor body 10, allowing the temperature sensor to accurately measure the temperature of the pot bottom, rather than the temperature of the flame. In particular, it eliminates the influence of crosswinds on the temperature sensor, ensuring stable temperature sensor readings. Furthermore, in this technical solution, the heat protection ring 22 is detachable from the sensor body 10. Thus, when a large amount of dust or oil stains accumulate in the gap between the heat protection ring 22 and the sensor body 10, the heat protection ring 22, or the heat protection ring 22 together with the fixing ring 21, can be detached from the sensor body 10 for easy cleaning, thereby preventing excessive accumulation of dust or oil stains that could cause temperature sensor failure.

[0045] Refer to together Figure 3In this embodiment, the thermal protection ring 22 is detachably connected to the fixed ring 21. Thus, when a large amount of dust or oil stains accumulate in the gap between the thermal protection ring 22 and the sensor body 10, the thermal protection ring 22 can be removed to easily clean the dust or oil stains.

[0046] Reference Figure 3 and Figure 4 In this embodiment, specifically, the fixing ring 21 is provided with a plurality of opening slots 210, and the lower end of the heat protection ring 22 is provided with a plurality of snap-fit ​​protrusions 220 corresponding to the plurality of opening slots 210. The connection between the snap-fit ​​protrusion 220 and the lower end of the heat protection ring 22 is provided with a side-opening slot 220a. Thus, after the snap-fit ​​protrusion 220 is passed through the opening slot 210 and the heat protection ring 22 is rotated, the slot 220a can be snapped into the edge of the opening slot 210, thereby fixing the heat protection ring 22 onto the fixing ring 21. It can be understood that by performing the reverse operation on the heat protection ring 22, the heat protection ring 22 can be removed from the fixing ring 21 to clean out contaminants such as dust or oil stains and avoid the deposition of impurities.

[0047] It should be noted that in this embodiment, the thermal protection ring 22 and the fixing ring 21 are connected by a rotational fastening method; however, this design is not limited to this, and in other embodiments, refer to... Figure 5 The thermal protection ring 22 can also be interference-fitted to the fixed ring 21, thus achieving a detachable connection between the thermal protection ring 22 and the fixed ring 21. In this embodiment, optionally, the outer edge of the fixed ring 21 is provided with a downwardly extending first flange 211. The connection between the first flange 211 and the fixed ring 21 is formed with an inwardly recessed limiting step 212. The lower end of the thermal protection ring 22 is interference-fitted to the limiting step 212. It can be understood that the addition of the limiting step 212 can, on the one hand, prevent the thermal protection ring 22 from being installed too low, thus exposing too much of the upper end of the sensor body 10. On the other hand, it can also prevent the lower end of the thermal protection ring 22 from protruding excessively from the outer circumferential surface of the first flange 211. Optionally, the recessed depth of the limiting step 212 can be set to be consistent with the thickness of the thermal protection ring 22, so that the lower end of the thermal protection ring 22 is flush with the rest of the first flange 211.

[0048] Reference Figure 3In this embodiment, the fixing ring 21 is also detachably mounted on the sensor body 10. That is to say, in this embodiment, not only are the thermal protection ring 22 and the fixing ring 21 detachably connected, but the fixing ring 21 and the sensor body 10 are also detachably connected. Thus, even if the detachable structure between the thermal protection ring 22 and the fixing ring 21 is damaged, making it difficult to remove the thermal protection ring 22 from the fixing ring 21, the thermal protection ring 22 can still be detached from the sensor body 10 by removing the fixing ring 21. It should be noted that in this embodiment, the fixing ring 21 and the sensor body 10 can be fixed by, but is not limited to, detachable methods such as interference fit or snap-fit.

[0049] Reference Figure 2 In this embodiment, the upper surface of the heat protection ring 22 is lower than the upper surface of the sensor body 10, thus ensuring that the upper part of the sensor body 10 is in contact with the bottom of the pot. Of course, when the pot used has a downward-protruding arc-shaped bottom, the upper surface of the heat protection ring 22 can also be flush with or even slightly higher than the sensor body 10. In this case, the arc-shaped bottom can also be in contact with the upper part of the sensor body 10.

[0050] It is understood that in this embodiment, if the height difference between the upper surface of the heat protection ring 22 and the upper surface of the sensor body 10 is too large, too much of the upper part of the sensor body 10 will be exposed, which is not conducive to the protection of the sensor body 10; if the height difference between the upper surface of the heat protection ring 22 and the upper surface of the sensor body 10 is too small, it will be not conducive to the contact between the upper part of the sensor body 10 and the bottom of the pot. In this embodiment, the height difference between the upper surface of the heat protection ring 22 and the upper surface of the sensor body 10 is preferably in the range of 0.3mm to 0.6mm. Within this range, both good protection of the sensor body 10 and easy contact between the sensor body 10 and the bottom of the pot can be taken into account.

[0051] Reference Figure 2 In this embodiment, the upper end of the thermal protection ring 22 is further provided with an inwardly extending annular flange 224. This reduces the inlet between the upper end of the thermal protection ring 22 and the upper end of the sensor body 10, thereby reducing the probability of contaminants such as dust or oil entering between them. Of course, in some other embodiments of the present invention, such as... Figure 6 As shown, the annular flange 224 may not be provided at the upper end of the heat protection ring 22.

[0052] In this embodiment, specifically, there is a gap between the inner edge of the annular flange 224 and the outer surface of the sensor body 10 to prevent heat from the thermal protection ring 22 from being transferred to the sensor body 10 through the annular flange 224. It is understood that if the gap is too wide, dust or oil stains can still easily enter between the thermal protection ring 22 and the sensor body 10; if the gap is too narrow, during assembly, if eccentricity occurs, the edge of the annular flange 224 can easily touch the sensor body 10. Therefore, in this embodiment, the gap ranges from 0.5mm to 1.5mm, which is a suitable range and avoids gaps that are too wide or too narrow.

[0053] Reference Figure 2 In this embodiment, the thermal protection ring 22 further includes a first ring segment 221, a second ring segment 222, and a third ring segment 223 connected sequentially from top to bottom. The inner diameter of the first ring segment 221 is larger than the inner diameter of the third ring segment 223, and the second ring segment 222 is configured as a tapering segment that gradually decreases from top to bottom. This allows for a wider gap between the upper end of the thermal protection ring 22 and the upper end of the sensor body 10, thereby providing better isolation and protection for the upper end of the sensor body 10. However, this design is not limited to this; in other embodiments, such as... Figure 5 As shown, in the heat protection ring section which is arranged in at least three segments, the inner diameter of the first segment 221 can also be smaller than the inner diameter of the third segment 223. Correspondingly, the second segment 222 is set as a gradually expanding segment from top to bottom. In this way, the distance between the upper end face of the heat protection ring section 22 and the outer peripheral surface of the sensor body 10 can be smaller, thereby reducing the probability of contaminants such as dust or oil stains entering between them. In particular, at this time, it is usually no longer necessary to provide an inwardly extending annular flange 224 at the upper edge of the heat protection ring section 22. In addition, in some other embodiments, such as Figure 7 As shown, the heat protection ring 22 can also be arranged in a straight cylindrical shape. In this way, the structure of the heat protection ring 22 is simpler and easier to manufacture.

[0054] Reference Figure 8 , Figure 8 This is a schematic diagram of the structure of the fifth embodiment of the temperature sensor of the present invention. In this embodiment, the thermal protection ring 22 and the fixing ring 21 are integrally formed, and the fixing ring 21 is detachably connected to the sensor body 10. Thus, the thermal protection ring 22 can also be detached from the sensor body 10. It should be noted that in this embodiment, the thermal protection ring 22 and the fixing ring 21 can be integrally formed by injection molding, casting, sheet metal forming, or welding, etc.

[0055] In this embodiment, optionally, the fixing ring 21 is interference-fitted to the sensor body 10 to achieve a detachable connection between the two; however, this design is not limited to this. In other embodiments, the fixing ring 21 can also be detachably installed to the sensor body 10 by means of snap-fit ​​or other methods. In addition, in this embodiment, optionally, the inner edge of the fixing ring 21 is provided with a downwardly extending second flange 213. The second flange 213 is interference-fitted to the sensor body 10. It can be understood that the setting of the second flange 213 increases the contact area between the fixing ring 21 and the sensor body 10, thereby improving the interference-fit stability between the fixing ring 21 and the sensor body 10.

[0056] In this embodiment, the upper end of the thermal protection ring 22 is provided with an outwardly extending annular flange 224. Considering the rising characteristics of the flame airflow, the annular flange 224 is set to extend outward, which can reduce the impact of the rising flame airflow on the upper end of the protruding sensor body 10, thereby further ensuring the temperature measurement accuracy of the upper end of the sensor body 10.

[0057] In this embodiment, the fixing ring 21 is further provided with a plurality of leakage holes 214 located inside the thermal protection ring 22 and arranged vertically. It can be understood that the addition of leakage holes 214 can facilitate the automatic outflow of fluids such as oil stains that fall between the thermal protection ring 22 and the sensor body 10, thereby reducing the deposition of contaminants between the thermal protection ring 22 and the sensor body 10, thereby reducing the number of cleanings required and improving the user's ease of use.

[0058] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A temperature sensor for use in a gas stove, characterized in that, The temperature sensor includes: The sensor body extends vertically; and A heat shield includes a fixing ring extending radially outward along the sensor body and a heat protection ring extending vertically. The inner ring edge of the fixing ring is connected and fixed to the sensor body. The heat protection ring is spaced out and sleeved on the outside of the upper end of the sensor body, and the lower end of the heat protection ring is connected to the fixing ring. The thermal protection ring and the fixing ring are integrally formed, and the fixing ring is detachably connected to the sensor body. The inner edge of the fixing ring is provided with a downwardly extending second flange, which is interference-fitted to the sensor body. The fixing ring is used to close the lower end of the thermal protection ring. The upper surface of the thermal protection ring is lower than the upper surface of the sensor body; The fixing ring is provided with a number of leakage holes located inside the heat protection ring and arranged vertically.

2. The temperature sensor as described in claim 1, characterized in that, The heat protection ring and the fixing ring are integrally formed by injection molding, casting, sheet metal forming, or welding.

3. The temperature sensor as described in claim 1, characterized in that, The height difference between the upper surface of the thermal protection ring and the upper surface of the sensor body ranges from 0.3 mm to 0.6 mm.

4. The temperature sensor as described in claim 1, characterized in that, The upper end of the thermal protection ring is provided with an inward or outward extending annular flange.

5. The temperature sensor as described in claim 4, characterized in that, The annular flange extends inward, and there is a gap between the inner edge of the annular flange and the outer surface of the sensor body, the gap being in the range of 0.5mm to 1.5mm.

6. The temperature sensor as described in claim 1, characterized in that, The thermal protection ring includes a first ring segment, a second ring segment, and a third ring segment connected sequentially from top to bottom. The inner diameter of the first ring segment is larger than the inner diameter of the third ring segment, and the second ring segment is configured as a tapering segment that gradually decreases from top to bottom; or The thermal protection ring includes a first ring segment, a second ring segment, and a third ring segment connected sequentially from top to bottom. The inner diameter of the first ring segment is smaller than the inner diameter of the third ring segment, and the second ring segment is configured as a gradually expanding segment from top to bottom; or The thermal protection ring is arranged in a straight cylindrical shape.

7. A gas stove, characterized in that, Including the temperature sensor as described in any one of claims 1 to 6.

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