Dry-burning-resistant temperature sensor and kitchen range

Abstract

The utility model relates to an anti-dry-burning temperature sensor and a kitchen range, the anti-dry-burning temperature sensor comprises a temperature sensing assembly and an elastic assembly, the temperature sensing assembly comprises a sensing cap, a thermistor and a pipe body, the elastic assembly comprises an elastic piece, a top piece and a pressing pipe, and the thermistor is fixed on the sensing cap; one end of the pressing pipe is movably inserted into the pipe body to abut against the top piece, the other end of the pressing pipe is fixed to the cooker, and an elastic piece is arranged between the induction cap and the top piece, so that when a thermistor on the induction cap makes contact with a to-be-detected piece, the to-be-detected piece downwards presses the thermistor, and the thermistor compresses the elastic piece; therefore, the thermistor can be in sufficient and stable abutting contact with the to-be-detected piece under the elastic restoring force of the elastic piece, the situation of inaccurate temperature sensing caused by the difference between the temperature in the to-be-detected piece and the temperature detected by the thermistor can be avoided, the detection precision of the thermistor is improved, and the use satisfaction degree of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of temperature sensors, and particularly to a dry-burning prevention temperature sensor and a cooking appliance. Background Art

[0002] Cooking appliances are the kitchen appliances with the highest daily usage frequency in our families. Since flammable and explosive dangerous gases are used, many unsafe injury incidents often occur due to improper use or other accidents. Therefore, a dry-burning prevention temperature sensor is used to detect the temperature during the use of a gas stove to avoid dry burning of the cooking appliance and prevent safety accidents.

[0003] However, the existing dry-burning prevention temperature sensors have poor contact with cooking utensils, resulting in large errors in detecting the temperature of cooking utensils during high-temperature cooking, so that the temperature detected by the temperature sensing element does not match the actual temperature of the cooking utensil, resulting in inaccurate temperature sensing and a temperature difference between the temperature inside the cooking utensil and the temperature detected by the dry-burning prevention temperature sensor, which further affects the user experience. Summary of the Utility Model

[0004] Based on this, in view of the problem of poor contact between the existing dry-burning prevention temperature sensor and the cooking utensil, it is necessary to provide a dry-burning prevention temperature sensor and a cooking appliance.

[0005] In a first aspect, an embodiment of the present application provides a dry-burning prevention temperature sensor, which includes:

[0006] A temperature sensing assembly, which includes an induction cap, a thermistor, and a tube body. The induction cap covers one end of the tube body, the thermistor is fixed on the induction cap, the induction cap is provided with an opening, one end of the thermistor can contact a component to be detected through the opening, and the other end of the thermistor is used to connect to the control mechanism of the cooking appliance;

[0007] An elastic assembly, which includes an elastic member, a top piece, and a pressure tube. The top piece is located inside the tube body, one end of the pressure tube is fixed on the cooking appliance, the other end of the pressure tube is movably inserted into the tube body and abuts against the top piece, and the elastic member is arranged between the induction cap and the top piece and is in a compressed state.

[0008] In one embodiment, the top piece is annular, a plurality of protrusions arranged at intervals in the circumferential direction are provided on the inner peripheral edge of the top piece, and a plurality of card slots are opened at one end of the pressure tube close to the top piece, and the protrusions are correspondingly clamped with the card slots one by one.

[0009] In one embodiment, the dry-burning prevention temperature sensor further includes a mounting plate, one end of the pressure tube away from the top piece is fixed on the mounting plate, and the mounting plate is used to be fixed to the cooking appliance.

[0010] In one embodiment, the pressing tube includes a connecting tube and a fixing tube. The outer diameter of the connecting tube is greater than that of the fixing tube, and a stepped surface is formed at the connection between the outer wall of the connecting tube and the outer wall of the fixing tube.

[0011] The mounting plate is provided with a jack, the fixing tube is inserted into the jack, and the stepped surface abuts against the mounting plate.

[0012] In one embodiment, the dry - burning prevention temperature sensor further includes a signal transmission component. One end of the signal transmission component is connected to the lead of the thermistor through a connecting wire, and the other end is electrically connected to the control mechanism of the cooker.

[0013] In one embodiment, the signal transmission group includes a connecting wire, a terminal, and a terminal socket. The terminal is connected to the thermistor through the connecting wire. The terminal socket is sleeved outside the terminal, and the terminal is electrically connected to the control mechanism of the cooker.

[0014] In one embodiment, the induction cap is provided with a fixing hole, the thermistor is fixed in the fixing hole, and the opening is one - end opening of the fixing hole.

[0015] In one embodiment, a guiding rail is provided on the inner wall of the tube body. The extending direction of the guiding rail is along the axial direction of the tube body. A sliding groove is provided on the outer peripheral edge of the top piece, and the sliding groove is slidably connected to the guiding rail.

[0016] In one embodiment, an insulating sleeve is sleeved outside the lead of the thermistor.

[0017] In a second aspect, an embodiment of the present application further provides a cooker, which includes the above - mentioned dry - burning prevention temperature sensor, and further includes a burner, a control mechanism, and a control valve. The control mechanism is connected to the thermistor, and the control mechanism can control the control valve according to the temperature of the component to be detected detected by the thermistor, so as to close the burner by the control valve.

[0018] Beneficial effects:

[0019] The embodiment of the present application provides a dry - burning prevention temperature sensor and a cooking appliance. The dry - burning prevention temperature sensor includes a temperature - sensing component and an elastic component. The temperature - sensing component includes a sensing cap, a thermistor, and a tube body. The elastic component includes an elastic member, a top piece, and a pressure tube. By fixing the thermistor on the sensing cap, movably inserting one end of the pressure tube into the tube body to abut against the top piece, and fixing the other end on the cooking appliance, and arranging an elastic member between the sensing cap and the top piece, when the thermistor on the sensing cap comes into contact with the component to be detected, the component to be detected presses down the thermistor, and the thermistor compresses the elastic member. Thus, the thermistor can be in full and stable abutting contact with the component to be detected under the elastic restoring force of the elastic member, further avoiding the situation that the temperature in the component to be detected is different from the temperature detected by the thermistor, resulting in inaccurate temperature sensing, improving the detection accuracy of the thermistor, and further improving the user satisfaction. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a dry - burning prevention temperature sensor provided by some embodiments of the present application.

[0021] Figure 2 is Figure 1 an exploded view of the dry - burning prevention temperature sensor in

[0022] Figure 3 It is a schematic structural diagram of a top piece of a dry - burning prevention temperature sensor provided by some embodiments of the present application.

[0023] Figure 4 It is a schematic structural diagram of a pressure tube of a dry - burning prevention temperature sensor provided by some embodiments of the present application.

[0024] Reference Signs:

[0025] 1. Temperature - sensing component; 11. Sensing cap; 111. Fixing hole; 12. Tube body; 13. Thermistor; 14. Insulating sleeve;

[0026] 2. Elastic component; 21. Elastic member; 22. Top piece; 221. Protrusion; 222. Slide groove; 23. Pressure tube; 231. Card slot; 232. Connecting tube; 233. Fixed tube; 234. Step surface;

[0027] 3. Mounting plate; 31. Insertion hole; 32. Mounting hole;

[0028] 4. Signal transmission component; 41. Terminal socket; 42. Connecting wire; 43. Wire tube. Detailed Embodiment

[0029] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0031] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "join", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0035] Referring to Figures 1 - 2 , an embodiment of the present application provides an anti-dry burning temperature sensor. The anti-dry burning temperature sensor includes a temperature sensing component 1 and an elastic component 2. The temperature sensing component 1 includes a sensing cap 11, a thermistor 13 and a tube body 12. The sensing cap 11 covers one end of the tube body 12. The thermistor 13 is fixed on the sensing cap 11. The sensing cap is provided with an opening. One end of the thermistor 13 can contact the component to be detected through the opening. The other end of the thermistor 13 is used to connect to the control mechanism of the cooking appliance. The elastic component 2 includes an elastic member 21, a top piece 22 and a pressure tube 23. The top piece 22 is located inside the tube body 12. One end of the pressure tube 23 is fixed on the cooking appliance. The other end of the pressure tube 23 is movably inserted into the tube body 12 and abuts against the top piece 22. The elastic member 21 is disposed between the sensing cap 11 and the top piece 22 and is in a compressed state.

[0036] For the anti-dry burning temperature sensor provided by the embodiment of the present application, by fixing the thermistor 13 on the sensing cap 11, movably inserting one end of the pressure tube 23 into the tube body 12 to abut against the top piece 22, and fixing the other end on the cooking appliance, and arranging the elastic member 21 between the sensing cap 11 and the top piece 22, when the thermistor 13 on the sensing cap 11 contacts the component to be detected, the component to be detected presses down the thermistor 13, and the thermistor 13 compresses the elastic member 21, so that the thermistor 13 can be in full and stable abutting contact with the component to be detected under the elastic restoring force of the elastic member 21, thereby avoiding the situation that the temperature in the component to be detected is different from the temperature detected by the thermistor 13, resulting in inaccurate temperature sensing, improving the detection accuracy of the thermistor 13, and further improving the user satisfaction.

[0037] It should be noted that the workpiece to be detected in the embodiments of the present application is a kitchen utensil.

[0038] In addition, by fixing one end of the pressure tube 23 on the cooker and inserting the other end into the tube body 12 and abutting against the top piece 22, the whole anti-dry-burning temperature sensor is fixed on the cooker, and the pressure tube 23 can extend into or out of the tube body 12, so that the thermistor 13 can be stably in contact with the kitchen utensil, thus avoiding the situation that there is a gap between the temperature in the kitchen utensil and the temperature detected by the thermistor 13, resulting in inaccurate temperature sensing, and improving the detection accuracy.

[0039] As Figures 2 - 4 shown, in some embodiments, the top piece 22 is annular, and a plurality of protrusions 221 arranged at intervals in the circumferential direction are provided on the inner peripheral edge of the top piece 22. A plurality of card slots 231 are formed at one end of the pressure tube 23 close to the top piece 22, and the protrusions 221 are in one-to-one correspondence with the card slots 231 and are engaged.

[0040] By providing the protrusions 221 on the top piece 22 and the card slots 231 on the pressure tube 23, the top piece 22 and the pressure tube 23 are engaged, so that the top piece 22 and the pressure tube 23 are stably fixed, and the top piece 22 can move along the axial direction of the pressure tube 23, thereby improving the stability of the whole anti-dry-burning temperature sensor.

[0041] As Figures 1 - 2 shown, in some embodiments, the anti-dry-burning temperature sensor further includes a mounting plate 3. One end of the pressure tube 23 away from the top piece 22 is fixed on the mounting plate 3, and the mounting plate 3 is used to be fixed to the cooker.

[0042] By providing the mounting plate 3 and fixing the pressure tube 23 on the mounting plate 3, the fixing between the whole anti-dry-burning temperature sensor and the cooker can be made more stable, thereby improving the detection accuracy of the thermistor 13.

[0043] As Figure 2 and Figure 4 shown, specifically, the pressure tube 23 includes a connecting tube 232 and a fixing tube 233. The outer diameter of the connecting tube 232 is larger than the outer diameter of the fixing tube 233, and a step surface 234 is formed between the outer walls of the connecting tube 232 and the fixing tube 233;

[0044] A jack 31 is formed on the mounting plate 3, and the fixing tube 233 is inserted into the jack 31, and the step surface 234 abuts against the mounting plate 3.

[0045] By providing insertion holes 31 on the mounting plate 3 and inserting the fixing tube 233 into the insertion holes 31, the pressing tube 23 can be stably fixed on the mounting plate 3, so that the entire anti-dry-burning temperature sensor is fixed to the cooking appliance through the mounting plate 3. Moreover, by abutting the stepped surface 234 against the mounting plate 3, the fixing stability between the pressing tube 23 and the mounting plate 3 can be further improved.

[0046] In some embodiments, mounting holes 32 are also provided on the mounting plate 3, and the cooking appliance is fixedly connected through bolts passing through the mounting holes 32.

[0047] As Figures 1 - 2 shown, in some embodiments, the anti-dry-burning temperature sensor further includes a signal transmission component 4. One end of the signal transmission component 4 is connected to the lead of the thermistor 13 through a connecting wire 42, and the other end is electrically connected to the control mechanism of the cooking appliance.

[0048] By providing the signal transmission component 4, the signal transmission component 4 can be connected to the control mechanism of the cooking appliance according to the temperature detected by the thermistor 13. Thus, when the cooking appliance is dry-burning, the signal transmission component 4 can control the control mechanism of the cooking appliance to turn off the cooking appliance, avoiding continuous dry-burning of the cooking appliance.

[0049] Specifically, the signal transmission component 4 includes a connecting wire 42, a terminal, and a terminal socket 41. The terminal is connected to the lead of the thermistor 13 through the connecting wire 42. The terminal socket 41 is sleeved outside the terminal, and the terminal socket 41 is inserted into the cooking appliance. The terminal is connected to the control valve of the cooking appliance.

[0050] In addition, in the embodiments of the present application, a wire tube 43 is further sleeved outside the connecting wire 42 to protect the connecting wire 42 from being damaged and extend the service life of the connecting wire 42.

[0051] As Figures 1 - 2 shown, in some embodiments, fixing holes 111 are provided on the induction cap 11, and the thermistor 13 is fixed in the fixing holes 111. One end opening of the fixing hole 111 is the opening.

[0052] In the embodiments of the present application, by providing fixing grooves on the induction cap 11 and fixing the thermistor 13 in the fixing grooves, on the one hand, the thermistor 13 can be quickly installed and disassembled on the induction cap 11, and on the other hand, the thermistor 13 can be in direct contact with the kitchenware, thereby improving the detection accuracy of the thermistor 13 and avoiding the situation of inaccurate temperature sensing caused by the temperature difference between the temperature inside the kitchenware and the temperature detected by the thermistor 13.

[0053] In addition, in other embodiments, the thermistor 13 can also be arranged not to be in direct contact with the kitchenware. Specifically, a fixing groove is provided on the side of the induction cap 11 close to the tube body 12, and the thermistor 13 is fixed in the fixing groove and abuts against the bottom surface of the induction cap 11.

[0054] By arranging the thermistor 13 not to be in direct contact with the kitchenware, contacting the kitchenware directly through the induction cap 11, and then detecting the induction cap 11 through the thermistor 13 to realize the detection of the temperature of the kitchenware, it can avoid the direct contact between the kitchenware and the thermistor 13, causing damage to the thermistor 13, thereby prolonging the service life of the thermistor 13.

[0055] Such as Figures 1 - 2 As shown, in some embodiments, a guiding rail is provided on the inner wall of the tube body 12, the extending direction of the guiding rail is along the axial direction of the tube body 12, and a sliding groove 222 is provided on the outer peripheral edge of the top piece 22, and the sliding groove 222 is slidably connected with the guiding rail.

[0056] By providing a guiding rail on the inner wall of the tube body 12 and a sliding groove 222 on the top piece 22, the top piece 22 can slide along the guiding rail, thereby avoiding the rotation of the top piece 22 driving the elastic member 21 to rotate, and further preventing the thermistor 13 from rotating, enabling the thermistor 13 to stably contact with the kitchenware, thus avoiding the situation that there is a difference between the temperature inside the kitchenware and the temperature detected by the thermistor 13, resulting in inaccurate temperature sensing, and improving the detection accuracy.

[0057] In the embodiment of the present application, a plurality of sliding grooves 222 arranged at intervals in the circumferential direction are provided on the outer peripheral edge of the top piece 22, and a plurality of guiding rails arranged at intervals in the circumferential direction are provided on the inner wall of the tube body 12, and the sliding grooves 222 and the guiding rails are arranged in one-to-one correspondence.

[0058] By providing a plurality of guiding rails and a plurality of sliding grooves 222, and arranging the sliding grooves 222 and the guiding rails in one-to-one correspondence, the stability of the top piece 22 can be further improved, and further enabling the thermistor 13 to stably contact with the kitchenware.

[0059] Such as Figures 1 - 2 As shown, in some embodiments, an insulating sleeve 14 is sleeved on the lead of the thermistor 13.

[0060] By sleeving an insulating sleeve 14 on the lead of the thermistor 13, the influence of the atmospheric environment and external media on the lead can be effectively isolated, the electrical performance of the lead can be ensured, and its service life can be prolonged. The insulating sleeve 14 also has good waterproof and moisture-proof properties, and can effectively prevent the lead from being damaged due to moisture. The insulating sleeve 14 also has good heat resistance and can be used at high temperatures for a long time without deformation.

[0061] In a second aspect, an embodiment of the present application further provides a cooking appliance, including the above-mentioned anti-dry-burning temperature sensor, and further including a burner, a control mechanism, and a control valve. The control mechanism is electrically connected to the thermistor 13, and the control mechanism can control the control valve according to the temperature of the component to be detected detected by the thermistor 13, so as to close the burner by the control valve.

[0062] By electrically connecting the control mechanism to the anti-dry-burning temperature sensor, the thermistor 13 in the anti-dry-burning temperature sensor is used to detect the temperature of the cooking utensils on the cooking appliance. The thermistor 13 is fixed on the induction cap 11, and an elastic member 21 is arranged between the induction cap 11 and the top piece 22, so that the induction cap 11 can be away from the top piece 22, and the thermistor 13 on the induction cap 11 can be in stable contact with the cooking utensils, thereby avoiding the situation that the temperature in the cooking utensils is different from the temperature detected by the thermistor 13, resulting in inaccurate temperature sensing, improving the detection accuracy, and then the control mechanism controls the control valve to close the burner according to the temperature of the cooking utensils detected by the thermistor 13 to avoid dry burning.

[0063] Specifically, the cooking appliance further includes an alarm mechanism, and the alarm mechanism is electrically connected to the control mechanism. When the temperature of the cooking utensils detected by the thermistor 13 exceeds the set temperature, the control mechanism can control the alarm mechanism to give an alarm, so as to remind the operator to process the cooking appliance and the cooking utensils, and further avoid unsafe injury events.

[0064] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0065] The above-mentioned embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A dry-run prevention temperature sensor, characterized in that, The anti-dry burning temperature sensor includes: a temperature sensing component, the temperature sensing component includes a sensing cap, a thermistor and a tube body, the sensing cap is provided at one end of the tube body, the thermistor is fixed on the sensing cap, the sensing cap is provided with an opening, one end of the thermistor can contact a component to be detected through the opening, and the other end of the thermistor is used to connect to the control mechanism of the cooking appliance; an elastic component, the elastic component includes an elastic member, a top piece and a pressure tube, the top piece is located inside the tube body, one end of the pressure tube is fixed on the cooking appliance, the other end of the pressure tube is movably inserted into the tube body and abuts against the top piece, and the elastic member is arranged between the sensing cap and the top piece and is in a compressed state.

2. The dry-burning prevention temperature sensor according to claim 1, characterized in that, The top piece is annular, a plurality of protrusions arranged at intervals in the circumferential direction are provided on the inner peripheral edge of the top piece, and a plurality of card slots are provided at one end of the pressure tube close to the top piece, and the protrusions are correspondingly and detachably connected to the card slots one by one.

3. The dry-burning prevention temperature sensor according to claim 1, wherein The anti-dry burning temperature sensor further includes a mounting plate, one end of the pressure tube away from the top piece is fixed on the mounting plate, and the mounting plate is used to be fixed to the cooking appliance.

4. The dry-burning prevention temperature sensor according to claim 3, characterized in that, The pressure tube includes a connecting tube and a fixing tube, the outer diameter of the connecting tube is larger than the outer diameter of the fixing tube, and a step surface is formed at the connection between the outer wall of the connecting tube and the outer wall of the fixing tube; a jack is provided on the mounting plate, the fixing tube is inserted into the jack, and the step surface abuts against the mounting plate.

5. The dry-burning prevention temperature sensor according to claim 1, characterized in that, The anti-dry burning temperature sensor further includes a signal transmission component, one end of the signal transmission component is connected to the lead of the thermistor through a connecting wire, and the other end is electrically connected to the control mechanism of the cooking appliance.

6. The anti-dry-burning temperature sensor according to claim 5, wherein, The signal transmission component includes a connecting wire, a terminal and a terminal socket, the terminal is connected to the thermistor through the connecting wire, the terminal socket is sleeved outside the terminal, and the terminal is electrically connected to the control mechanism of the cooking appliance.

7. The anti-dry burning temperature sensor according to claim 1, wherein A fixing hole is provided on the sensing cap, the thermistor is fixed in the fixing hole, and the opening is one end opening of the fixing hole.

8. The anti-dry burning temperature sensor according to claim 1, wherein A guiding rail is provided on the inner wall of the tube body, the extending direction of the guiding rail is along the axial direction of the tube body, a sliding groove is provided on the outer peripheral edge of the top piece, and the sliding groove is slidably connected to the guiding rail.

9. The anti-dry-burning temperature sensor according to claim 1, wherein An insulating sleeve is sleeved outside the lead of the thermistor.

10. Cooker, characterized in that, Including the anti-dry burning temperature sensor according to any one of claims 1-9, further including a burner, a control mechanism and a control valve, the control mechanism is connected to the thermistor, and the control mechanism can control the control valve according to the temperature detected by the thermistor of the component to be detected, so that the control valve closes the burner.

Images