A temperature sensor detachably connected with a flame isolation device

Abstract

The present application relates to a temperature sensor detachably connected with a flame isolation device, which includes a dry-burning prevention sensor vertically installed at the axis of the stove head through a mounting member with the temperature measuring head facing upward, and a flame isolation device detachably connected to the dry-burning prevention sensor. The flame isolation device is sleeved on the periphery of the dry-burning prevention sensor. The top end of the flame isolation device and the temperature measuring head of the dry-burning prevention sensor can both vertically expand and contract to adapt to the bottom of the pot with different shapes and different arcs. The present application has the effect of realizing the detachability of the flame isolation device, so as to facilitate the cleaning and maintenance of the dry-burning prevention sensor.

Description

Technical Field

[0001] This application relates to the technical field of anti-dry-burning sensors, and particularly to a temperature sensor detachably connected with a flame isolation device. Background Art

[0002] As a common kitchen appliance, gas stoves are widely used in households and commercial places; with the improvement of people's living standards, the requirements for the safety and functionality of gas stoves are also constantly increasing. Especially in terms of anti-dry-burning, existing gas stoves are usually equipped with anti-dry-burning sensors (temperature sensors) to monitor the temperature of the bottom of the pot, so as to prevent fire accidents caused by dry-burning of the cookware; this safety measure not only improves the safety of using gas stoves, but also effectively extends the service life of gas stoves and reduces the economic losses of users.

[0003] Currently, in order to reduce the influence of the flame on the anti-dry-burning sensor, a flame isolation device is fixed on the anti-dry-burning sensor, and then the anti-dry-burning sensor with the flame isolation device is installed on the gas stove, so that the temperature measuring head of the anti-dry-burning sensor contacts the bottom of the pot to achieve the purpose of anti-dry-burning.

[0004] However, the above-mentioned related technologies have the following problems: directly fixing the flame isolation device on the anti-dry-burning sensor is not convenient for cleaning and maintaining the anti-dry-burning sensor. Summary of the Invention

[0005] In order to make the flame isolation device detachable for the convenience of cleaning and maintaining the anti-dry-burning sensor, this application provides a temperature sensor detachably connected with a flame isolation device.

[0006] The temperature sensor detachably connected with a flame isolation device provided by this application adopts the following technical solution:

[0007] A temperature sensor detachably connected with a flame isolation device includes an anti-dry-burning sensor vertically installed at the axis of the burner head through a mounting member with the temperature measuring head facing upward, and a flame isolation device detachably connected to the anti-dry-burning sensor. The flame isolation device is sleeved on the periphery of the anti-dry-burning sensor, and the top end of the flame isolation device and the temperature measuring head of the anti-dry-burning sensor can both vertically expand and contract to adapt to the bottom of the pot with different shapes and different arcs.

[0008] By adopting the above technical solution, both the flame isolation device and the temperature measuring head of the anti-dry-burning sensor can vertically expand and contract, ensuring that the two can be completely attached to the bottom of the pot with different shapes and different arcs. Thus, the flame isolation device plays a role in isolating the flame from the anti-dry-burning sensor, enabling the anti-dry-burning sensor to completely avoid the interference of the flame and protecting the anti-dry-burning sensor from being damaged; and the detachable connection between the flame isolation device and the anti-dry-burning sensor is convenient for cleaning and maintaining the anti-dry-burning sensor.

[0009] Preferably, a clamping portion protrudes outward from the installation pipe of the dry - burning prevention sensor. The installation member includes a first installation body detachably connected to the stove top through an extension portion, a second installation body detachably connected to the first installation body, a first clamping block vertically sliding inside the first installation body and clamped with the clamping portion, and a second clamping block vertically sliding inside the second installation body and clamped with the clamping portion. An elevating member connected to the first clamping block is arranged on the first installation body. The elevating member drives the installation pipe and the second clamping block to lift simultaneously through the first clamping block, so as to ensure that the installation pipe is installed at a proper height position.

[0010] By adopting the above - mentioned technical solution, during the installation process, first place the installation pipe between the first installation body and the second installation body, then install the first installation body on the second installation body, so that the first clamping block and the second clamping block are simultaneously clamped with the clamping portion. Then install the extension portion on the bottom surface of the stove top, and further install the installation pipe on the axis of the stove top.

[0011] Preferably, the elevating member includes a screw rod rotatably connected inside the first installation body and threadedly connected to the first clamping block, a ratchet wheel fixedly sleeved on the periphery of the screw rod and located below the first installation body, a pawl rotatably connected to the bottom surface of the first installation body and abutted against the ratchet wheel, and a leaf spring arranged on the bottom surface of the first installation body and abutted against the pawl.

[0012] By adopting the above - mentioned technical solution, after installing the installation pipe on the axis of the stove top, the screw rod can be rotated by a tool. Since the screw rod is threadedly connected to the first clamping block, and the clamping portion is clamped between the first clamping block and the second clamping block, the first clamping block and the second clamping block jointly drive the installation pipe to move upward, so as to install the installation pipe at a proper height position. At the same time, since the pawl abuts against the ratchet wheel, the screw rod cannot rotate reversely, playing a role in locking the adjusted screw rod.

[0013] Preferably, the flame isolation device includes a first spring, a first mounting seat arranged on the dry - burning prevention sensor, a first fire - proof cover and a mounting cover arranged in sequence from top to bottom. A first limiting ring is fixedly sleeved on the periphery of the mounting cover. The first spring is sleeved on the periphery of the mounting cover, and the first spring is located between the first fire - proof cover and the first limiting ring. A radially extending mounting ring is integrally formed on the inner side wall of the mounting cover. When the mounting cover is sleeved on the dry - burning prevention sensor, the bottom surface of the mounting ring abuts against the top surface of the first mounting seat.

[0014] By adopting the above technical solution, the first spring is located between the first fireproof cover and the first limiting ring, ensuring that the first fireproof cover can be compressed downward when subjected to the pressure of the bottom of the pot and return to its original position after the pressure is released, so that the top of the first fireproof cover always closely fits the bottom of the pot, effectively isolating the influence of the flame on the dry-burning prevention sensor; at the same time, the cooperation between the mounting ring and the first mounting seat realizes the detachable connection between the flame isolation device and the dry-burning prevention sensor, facilitating the cleaning and maintenance of the dry-burning prevention sensor.

[0015] Preferably, the flame isolation device further includes an outer cover, and the top end of the outer cover is fixedly connected to the bottom end of the first fireproof cover.

[0016] By adopting the above technical solution, the setting of the outer cover plays a role in protecting the first spring.

[0017] Preferably, a radially extending blocking ring is fixedly connected to the bottom end of the outer cover, and the blocking ring is snap-fitted with the first limiting ring.

[0018] By adopting the above technical solution, the snap connection between the blocking ring and the first limiting ring can effectively prevent the first fireproof cover from slipping out of the mounting cover during the reset process, ensuring that the flame isolation device is stably and reliably maintained on the periphery of the dry-burning prevention sensor; this not only improves the safety of the product but also extends its service life.

[0019] Preferably, a sliding portion that vertically slides with the mounting cover is provided at the bottom end of the first fireproof cover.

[0020] By adopting the above technical solution, the sliding portion plays a guiding role in the vertical movement of the first fireproof cover.

[0021] Preferably, the flame isolation device includes a second fireproof cover in contact with the bottom of the pot at the top, a connecting sleeve fixedly connected to the bottom end of the second fireproof cover, a mounting sleeve sleeved on the connecting sleeve, a second spring provided in the mounting sleeve, and a second mounting seat movably sleeved on the periphery of the connecting sleeve. A radially extending second limiting ring is fixedly connected to the inner side wall of the mounting sleeve and at the bottom opening of the mounting sleeve. A connecting ring is fixedly sleeved on the periphery of the connecting sleeve. The second spring is located between the connecting ring and the second limiting ring. A burner cap is installed on the second mounting seat, and the burner cap is fixedly sleeved on the periphery of the mounting sleeve.

[0022] By adopting the above technical solution, the combined design of the second fire shield, the connecting sleeve and the mounting sleeve allows the flame isolation device to move vertically and telescopically, which is applicable to the bottom of the pot with different shapes and arcs, ensuring that the temperature measuring head of the anti-dry burning sensor is always in close contact with the bottom of the pot; thus, it can effectively isolate the direct influence of the flame on the anti-dry burning sensor, ensuring that the anti-dry burning sensor can maintain a stable working state under various bottom shapes of the pot; and when the bottom of the pot is separated from the abutment with the second fire shield, the reset function of the second spring makes the second fire shield move up quickly to reset, ensuring normal operation for the next use.

[0023] Preferably, a first inclined surface is provided on the periphery of the second mounting seat, and a second inclined surface is provided on the periphery of the second fire shield, and the inclination direction of the second inclined surface is the same as that of the first inclined surface.

[0024] By adopting the above technical solution, the design of the first inclined surface and the second inclined surface can guide the liquid to drain out along the inclined surface, thereby effectively reducing the entry of impurities such as water and oil into the moving gap between the connecting sleeve and the second mounting seat during the use of the cookware, and further improving the overall reliability and service life of the device.

[0025] Preferably, the second mounting seat is located above the connecting ring, and the bottom surface of the second mounting seat limits the connecting ring.

[0026] By adopting the above technical solution, when the bottom of the pot contacts the top of the second fire shield and presses down the second fire shield, the connecting ring moves down together with the second fire shield. However, due to the limiting effect of the bottom surface of the second mounting seat on the connecting ring, the connecting ring is prevented from detaching from the mounting sleeve, avoiding the problem of the flame isolation function failure caused by the detachment of the connecting ring; this not only improves the safety of the product but also extends the service life.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Both the flame isolation device and the temperature measuring head of the anti-dry burning sensor can move vertically and telescopically, ensuring that the two can be completely attached to the bottom of the pot with different shapes and arcs. Thus, the flame isolation device plays a role in isolating the flame from the anti-dry burning sensor, enabling the anti-dry burning sensor to completely avoid the interference of the flame and protecting the anti-dry burning sensor from being damaged; and the detachable connection between the flame isolation device and the anti-dry burning sensor facilitates the cleaning and maintenance of the anti-dry burning sensor.

[0029] 2. After installing the installation pipe at the axis of the burner head, the screw can be rotated by a tool. Since the screw is threadedly connected to the first block, and the clamping portion is clamped between the first block and the second block, the first block and the second block jointly drive the installation pipe to move up to install the installation pipe at a suitable height position; at the same time, since the pawl abuts against the ratchet, the screw cannot rotate in the reverse direction, playing a locking role for the adjusted screw.

[0030] 3. The first spring is located between the first fireproof cover and the first limit ring, ensuring that the first fireproof cover can be compressed downward when subjected to the pressure of the bottom of the pot and return to its original position after the pressure is released, so that the top of the first fireproof cover always fits tightly against the bottom of the pot, effectively isolating the influence of the flame on the dry-burning prevention sensor; at the same time, the cooperation between the mounting ring and the first mounting seat realizes the detachable connection between the flame isolation device and the dry-burning prevention sensor, facilitating the cleaning and maintenance of the dry-burning prevention sensor.

[0031] 4. The combined design of the second fireproof cover, the connecting sleeve and the mounting sleeve allows the flame isolation device to move vertically and telescopically, which is applicable to the bottoms of different shapes and arcs, ensuring that the temperature measuring head of the dry-burning prevention sensor always contacts the bottom of the pot tightly; thus, it can effectively isolate the direct influence of the flame on the dry-burning prevention sensor and ensure that the dry-burning prevention sensor can maintain a stable working state under various bottom shapes of the pot; and when the bottom of the pot is separated from the contact with the second fireproof cover, the reset function of the second spring makes the second fireproof cover move upward and reset quickly, ensuring normal operation for the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application.

[0033] Figure 2 is the cross-sectional view of the dry-burning prevention sensor and the first mounting seat of Embodiment 1 of the present application.

[0034] Figure 3 is the structural schematic diagram of the first mounting seat of Embodiment 1 of the present application.

[0035] Figure 4 is the cross-sectional view of the flame isolation device of Embodiment 1 of the present application.

[0036] Figure 5 is the overall cross-sectional view of Embodiment 1 of the present application.

[0037] Figure 6 is the structural schematic diagram of the overall of Embodiment 1 of the present application from another perspective.

[0038] Figure 7 is Figure 6 the enlarged partial view of part A in

[0039] Figure 8 is the structural schematic diagram of the mounting member, the dry-burning prevention sensor and the flame isolation device of Embodiment 1 of the present application.

[0040] Figure 9 is the exploded view of the mounting member of Embodiment 1 of the present application.

[0041] Figure 10 is the overall structural schematic diagram of Embodiment 2 of the present application.

[0042] Figure 11 It is a cross-sectional view of the flame isolation device and the burner cap in the second embodiment of the present application.

[0043] Figure 12 It is an overall cross-sectional view of the second embodiment of the present application.

[0044] Description of reference numerals: 1, temperature measuring element; 11, mounting pipe; 111, limiting flange; 112, clamping portion; 12, support pipe; 121, limiting portion; 122, heat collecting plate; 13, connecting spring; 14, inner protection pipe; 141, pressing portion; 2, first spring; 21, first mounting seat; 22, first fireproof cover; 221, sliding portion; 23, outer cover; 231, blocking ring; 24, mounting cover; 241, first limiting ring; 242, mounting ring; 3, second fireproof cover; 31, connecting sleeve; 311, connecting ring; 32, mounting sleeve; 321, second limiting ring; 33, second spring; 34, second mounting seat; 341, first inclined surface; 35, burner cap; 36, second inclined surface; 4, first mounting body; 41, first clamping block; 411, clamping groove; 42, extending portion; 43, flanging; 44, sliding groove; 45, screw; 451, turntable; 46, ratchet; 47, pawl; 48, leaf spring; 481, connecting shaft; 5, second mounting body; 51, second clamping block; 52, guide rod. Detailed implementation manners

[0045] The following further elaborates on the present application in conjunction with the attached Figures 1-12 for a more detailed description.

[0046] Embodiment 1

[0047] The embodiment of the present application discloses a temperature sensor detachably connected with a flame isolation device. Referring to Figure 1 and Figure 2 , the temperature sensor detachably connected with a flame isolation device includes a dry-burning prevention sensor vertically installed at the axis of the burner head of the gas stove with the temperature measuring head facing upward, and a flame isolation device detachably connected to the dry-burning prevention sensor. The flame isolation device is coaxially arranged with the dry-burning prevention sensor, and the flame isolation device is sleeved on the periphery of the dry-burning prevention sensor; the top end of the flame isolation device and the temperature measuring head of the dry-burning prevention sensor are both in contact with the bottom of the pot. The flame isolation device plays a role in isolating the flame from the dry-burning prevention sensor, so that the dry-burning prevention sensor can completely avoid the interference of the flame and protect the dry-burning prevention sensor from being damaged.

[0048] The top of the flame isolation device and the temperature measuring head of the dry-burning prevention sensor can both move vertically and telescopically to adapt to the bottom of the pot with different shapes and different radian; so that the top of the flame isolation device and the temperature measuring head of the dry-burning prevention sensor can be fully attached to the bottom of the pot with different shapes and different radian. That is: in the initial state, the top of the flame isolation device is higher than the temperature measuring head of the dry-burning prevention sensor. When the bottom of the pot is a convex bottom (the cross-section of the bottom of the pot is a downward convex arc surface), the pot first presses down the top of the flame isolation device and then contacts the temperature measuring head of the dry-burning prevention sensor. At this time, the top of the flame isolation device is higher than the temperature measuring head of the dry-burning prevention sensor. When the bottom of the pot is a flat bottom, the pot first presses down the top of the flame isolation device and then contacts the temperature measuring head of the dry-burning prevention sensor. At this time, the top of the flame isolation device is flush with the temperature measuring head of the dry-burning prevention sensor. When the bottom of the pot is a concave bottom (the cross-section of the bottom of the pot is an upward convex arc surface), the pot first presses down the top of the flame isolation device and then contacts the temperature measuring head of the dry-burning prevention sensor. At this time, the top of the flame isolation device is lower than the temperature measuring head of the dry-burning prevention sensor.

[0049] Referring to Figure 2 and Figure 3 The dry-burning prevention sensor includes a temperature measuring element 1, a mounting pipe 11 and a support pipe 12 which are coaxially arranged and distributed in sequence from inside to outside, and a connecting spring 13 arranged inside the support pipe 12; a limit flange 111 is installed at the top of the mounting pipe 11, and the limit flange 111 slides vertically on the inner side wall of the support pipe 12. The bottom end of the support pipe 12 is shrunk by a pipe shrinking process to form a limit portion 121, and the limit portion 121 is used to limit the limit flange 111 so that the mounting pipe 11 cannot be separated from the support pipe 12; one end of the mounting pipe 11 away from the limit flange 111 extends along the bottom end of the support pipe 12 to the outside of the support pipe 12, and the mounting pipe 11 is installed at the axis of the burner head.

[0050] A heat collecting plate 122 is installed at the top of the support pipe 12. The temperature measuring head of the temperature measuring element 1 is installed inside the heat collecting plate 122, and the connecting wire of the temperature measuring element 1 extends downward to the outside of the mounting pipe 11; in this embodiment, the heat collecting plate 122 is a plate body made of a heat conductive material, and contacts the bottom of the pot through the top surface of the heat collecting plate 122 to transfer the temperature of the bottom of the pot to the temperature measuring head of the temperature measuring element 1, so as to avoid the temperature measuring head of the temperature measuring element 1 directly contacting the bottom of the pot.

[0051] In order to protect the connecting wire of the temperature measuring element 1 and minimize the disconnection of the connecting wire of the temperature measuring element 1, an inner protection pipe 14 is arranged inside the support pipe 12. The top joint of the inner protection pipe 14 is fixedly connected to the bottom surface of the heat collecting plate 122. The pipe body of the inner protection pipe 14 is located between the mounting pipe 11 and the connecting wire of the temperature measuring element 1, and the bottom end of the inner protection pipe 14 extends to the outside of the mounting pipe 11; the part of the inner protection pipe 14 extending to the outside of the mounting pipe 11 forms a pressing portion 141 through an extrusion process, and the pressing portion 141 presses the connecting wire of the temperature measuring element 1.

[0052] In this embodiment, the temperature measuring element 1 includes, but is not limited to, NTC, thermocouple, and thermal resistance; the connecting spring 13 is a high-temperature resistant spring. The connecting spring 13 is sleeved on the peripheral side of the inner protection tube 14, and the top end of the connecting spring 13 is connected to the top joint of the inner protection tube 14, and the bottom end of the connecting spring 13 is connected to the top surface of the limiting flange 111.

[0053] Thus, when the bottom of the pot contacts the top surface of the heat collecting plate 122 and presses down the heat collecting plate 122, since the installation pipe 11 is fixed at the axis of the burner head, the installation pipe 11 and the limiting flange 111 are fixed and immovable, while the support pipe 12 moves downward. The downward movement of the support pipe 12 compresses the connecting spring 13, so that the top surface of the heat collecting plate 122 can always closely adhere to the bottom of the pot; when the bottom of the pot disengages from the abutment with the heat collecting plate 122, under the reset action of the connecting spring 13, the heat collecting plate 122 moves upward to reset; at the same time, under the limiting action of the limiting flange 111 on the limiting portion 121, it is avoided that the support pipe 12 disengages from the installation pipe 11 during the reset process.

[0054] The temperature measuring element 1 can set a corresponding temperature threshold, and the temperature measuring element 1 is electrically connected to the electric valve on the gas pipeline. When the bottom of the pot is dry burned and the temperature is higher than the temperature threshold of the temperature measuring element 1, the temperature measuring element 1 transmits an electrical signal to the electric valve to close the electric valve, thereby stopping the gas supply of the gas stove and causing the fire on the gas stove to go out automatically.

[0055] Refer to Figures 2-4 , the flame isolation device includes a first spring 2, a first mounting seat 21 fixedly sleeved on the peripheral side of the reduced diameter portion of the support pipe 12, and a first fireproof cover 22, an outer cover 23, and a mounting cover 24 arranged coaxially from top to bottom in sequence; the dry burning prevention sensor is located in the first fireproof cover 22. The bottom end of the first fireproof cover 22 is reduced in diameter by a reducing process to form a sliding portion 221. The bottom end of the sliding portion 221 extends along the upper opening of the mounting cover 24 into the mounting cover 24, and the sliding portion 221 slides vertically with the mounting cover 24; a first limiting ring 241 is fixedly sleeved on the peripheral side of the mounting cover 24. The first spring 2 is sleeved on the peripheral side of the mounting cover 24, and the top end of the first spring 2 is connected to the bottom end of the first fireproof cover 22, and the bottom end of the first spring 2 is connected to the top surface of the first limiting ring 241; the top end of the outer cover 23 is fixedly connected to the bottom end of the first fireproof cover 22, and a radially extending blocking ring 231 is fixedly connected to the bottom end of the outer cover 23. The blocking ring 231 is located below the first limiting ring 241, and the blocking ring 231 is clamped with the first limiting ring 241.

[0056] In this embodiment, the first spring 2 is a high-temperature resistant spring. An installation ring 242 extending radially is integrally formed on the inner side wall of the installation cover 24. After the installation pipe 11 is installed at the axis of the burner head, the installation cover 24 is sleeved on the dry-burning prevention sensor in the direction from top to bottom. The bottom surface of the installation ring 242 abuts against the top surface of the first mounting seat 21, thereby realizing the detachable connection between the flame isolation device and the dry-burning prevention sensor.

[0057] Referring to Figure 5 , thus, when the bottom of the pot contacts the top end of the first fireproof cover 22 and presses down the first fireproof cover 22, due to the limitation of the installation ring 242 by the first mounting seat 21, the installation cover 24 cannot move downward, while the first fireproof cover 22 moves downward. The first fireproof cover 22 moving downward compresses the first spring 2, so that the top end of the first fireproof cover 22 can always closely adhere to the bottom of the pot, and the dry-burning prevention sensor is completely avoided from the interference of the flame; when the bottom of the pot disengages from the abutment with the first fireproof cover 22, under the reset action of the first spring 2, the first fireproof cover 22 moves upward to reset; at the same time, under the limiting action of the first limiting ring 241 on the blocking ring 231, it is avoided that the first fireproof cover 22 disengages from the installation cover 24 during the reset process.

[0058] Referring to Figures 6-8 , an outwardly protruding clamping portion 112 is integrally formed on the circumferential side of the installation pipe 11. An installation member is clamped on the clamping portion 112, and the installation member is installed on the burner head, thereby installing the installation pipe 11 at the axis of the burner head.

[0059] Referring to Figures 7-9 , the installation member includes a first installation body 4 detachably connected to the burner head, a second installation body 5 detachably connected to the first installation body 4, a first clamping block 41 arranged inside the first installation body 4 and clamped with the clamping portion 112, and a second clamping block 51 arranged inside the second installation body 5 and clamped with the clamping portion 112; a horizontally arranged extension portion 42 is integrally formed on the outer side of the first installation body 4, and the extension portion 42 is detachably connected to the bottom surface of the burner head through a locking member. In this embodiment, the locking member includes but is not limited to screws and bolts. The locking member vertically penetrates the extension portion 42 and is threadedly connected to the bottom surface of the burner head; thereby installing the extension portion 42 on the bottom surface of the burner head.

[0060] Flanging 43 is bent at the edges of the mutually approaching sides of the first installation body 4 and the second installation body 5. When the first installation body 4 and the second installation body 5 are spliced, the flanging 43 on the first installation body 4 fits with the flanging 43 on the second installation body 5, and the flanging 43 on the first installation body 4 is detachably connected to the flanging 43 on the second installation body 5 through a fixing member. In this embodiment, the fixing member includes but is not limited to screws and bolts. The fixing member penetrates the flanging 43 of the first installation body 4 and is threadedly connected to the flanging 43 of the second installation body 5; thereby installing the first installation body 4 on the second installation body 5.

[0061] In order to enable the first clamping block 41 and the second clamping block 51 to be more firmly clamped with the clamping portion 112, clamping grooves 411 matching the contour of the clamping portion 112 are provided on the inner sides of both the first clamping block 41 and the second clamping block 51. Thus, during the installation process, first place the installation pipe 11 between the first installation body 4 and the second installation body 5, and then install the first installation body 4 on the second installation body 5 so that the first clamping block 41 and the second clamping block 51 are simultaneously clamped with the clamping portion 112. Then, install the extension portion 42 on the bottom surface of the burner head, and further install the installation pipe 11 on the axis of the burner head.

[0062] After the installation pipe 11 is installed on the axis of the burner head, in order to be able to adjust the height of the installation pipe 11 to ensure that the installation pipe 11 is installed at a suitable height position; a lifting member connected to the first clamping block 41 is provided on the first installation body 4, and the lifting member drives the installation pipe 11 and the second clamping block 51 to lift simultaneously through the first clamping block 41 to ensure that the installation pipe 11 is installed at a suitable height position.

[0063] Sliding grooves 44 are provided on the inner sides of both the first installation body 4 and the second installation body 5. The first clamping block 41 and the second clamping block 51 are vertically slid in the corresponding sliding grooves 44. The lifting member includes a screw rod 45 vertically arranged and rotatably connected in the sliding groove 44 of the first installation body 4, a ratchet wheel 46 fixedly sleeved on the periphery of the screw rod 45 and located below the first installation body 4, a pawl 47 rotatably connected to the bottom surface of the first installation body 4 and abutted against the ratchet wheel 46, and a leaf spring 48 provided on the bottom surface of the first installation body 4 and abutted against the pawl 47; a connecting shaft 481 is fixedly connected to the bottom surface of the first installation body 4, one end of the leaf spring 48 is fixedly connected to the connecting shaft 481, and the end of the leaf spring 48 away from the connecting shaft 481 is abutted against the pawl 47 so that the pawl 47 always has a tendency to abut against the ratchet wheel 46.

[0064] The screw rod 45 vertically penetrates the first clamping block 41 and is threadedly connected to the first clamping block 41. The bottom end of the screw rod 45 is fixedly connected with a turntable 451 located below the ratchet wheel 46, and a cross groove is provided on the bottom surface of the turntable 451 for rotating the turntable 451 through a tool. At the same time, in order to enable the second clamping block 51 to vertically slide more smoothly in the sliding groove 44 of the second installation body 5, a vertically arranged guide rod 52 is fixedly connected in the sliding groove 44 of the second installation body 5. The guide rod 52 penetrates the second clamping block 51 and is slidably connected to the second clamping block 51. A dovetail block is fixedly connected to the outer side of the first clamping block 41, and a dovetail groove corresponding to the position of the dovetail block is provided in the sliding groove 44 of the first installation body 4. The length direction of the dovetail groove is the same as the length direction of the screw rod 45, and the dovetail block is slidably connected to the dovetail groove so that the first clamping block 41 is more smoothly slidably connected in the sliding groove 44 of the first installation body 4.

[0065] In the initial state, both the first clamping block 41 and the second clamping block 51 are in contact with the inner bottom wall of the corresponding sliding groove 44. After installing the installation pipe 11 at the axis of the burner head, a tool can be used to rotate the turntable 451, so that the turntable 451 drives the screw rod 45 to rotate. Since the screw rod 45 is threadedly connected to the first clamping block 41, and the clamping portion 112 is clamped between the first clamping block 41 and the second clamping block 51, the first clamping block 41 and the second clamping block 51 jointly drive the installation pipe 11 to move upward, so as to install the installation pipe 11 at an appropriate height position. At the same time, since the pawl 47 is in contact with the ratchet wheel 46, the screw rod 45 cannot rotate in the reverse direction, which plays a role in locking the adjusted screw rod 45.

[0066] Embodiment 2

[0067] Referring to Figures 10-12 , compared with Embodiment 1, the difference lies in: the flame isolation device. In this embodiment, the flame isolation device includes a second fireproof cover 3 with the top in contact with the bottom of the pot, a connecting sleeve 31 fixedly connected to the bottom end of the second fireproof cover 3, an installation sleeve 32 sleeved on the connecting sleeve 31, a second spring 33 arranged in the installation sleeve 32, and a second mounting seat 34 movably sleeved on the periphery of the connecting sleeve 31; the second fireproof cover 3, the connecting sleeve 31 and the installation sleeve 32 are coaxially arranged, and the dry-burning prevention sensor is located in the second fireproof cover 3. A radially extending second limiting ring 321 is fixedly connected to the inner side wall of the installation sleeve 32 and at the bottom opening of the installation sleeve 32, and a connecting ring 311 is fixedly sleeved on the periphery of the connecting sleeve 31, and the connecting ring 311 slides vertically on the inner side wall of the installation sleeve 32; the second spring 33 is sleeved on the periphery of the connecting sleeve 31, and the top end of the second spring 33 is connected to the bottom surface of the connecting ring 311, and the bottom end of the second spring 33 is connected to the top surface of the second limiting ring 321.

[0068] The second mounting seat 34 is located above the connecting ring 311, and the bottom surface of the second mounting seat 34 limits the connecting ring 311; a burner cap 35 is installed on the second mounting seat 34, and the burner cap 35 is fixedly sleeved on the periphery of the installation sleeve 32. When in use, the burner cap 35 is sleeved on the top end of the burner head. When the bottom of the pot contacts the top end of the second fireproof cover 3 and presses down the second fireproof cover 3, due to the fixation of the installation sleeve 32 by the burner cap 35, the installation sleeve 32 cannot move downward, while the second fireproof cover 3 moves downward. The downward moving second fireproof cover 3 compresses the second spring 33 through the connecting ring 311, so that the top end of the second fireproof cover 3 can always be closely attached to the bottom of the pot, and the dry-burning prevention sensor is completely avoided from the interference of the flame; when the bottom of the pot is separated from the contact with the second fireproof cover 3, under the reset action of the second spring 33, the second fireproof cover 3 moves upward to reset; at the same time, under the limiting action of the second mounting seat 34 on the connecting ring 311, it is avoided that the connecting sleeve 31 and the installation sleeve 32 are separated during the reset process.

[0069] In this embodiment, the second spring 33 is a high-temperature resistant spring. A first inclined surface 341 is provided on the circumferential side of the second mounting seat 34, and the inclined direction of the first inclined surface 341 is downwardly inclined away from the connection sleeve 31; a second inclined surface 36 is provided on the circumferential side of the second fireproof cover 3, and the inclined direction of the second inclined surface 36 is the same as that of the first inclined surface 341. The presence of the second inclined surface 36 and the first inclined surface 341 can reduce the entry of water, oil, etc. into the moving gap between the connection sleeve 31 and the second mounting seat 34.

[0070] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A temperature sensor with a detachable flame isolation device, characterized in that: It includes an anti-dry-burning sensor which is vertically installed at the axis of the burner through a mounting piece and whose temperature measuring head faces upward, and a flame isolation device which is detachably connected to the anti-dry-burning sensor. The flame isolation device is sleeved on the periphery of the anti-dry-burning sensor. The top of the flame isolation device and the temperature measuring head of the anti-dry-burning sensor can be vertically telescopically moved to adapt to pot bottoms of different shapes and curvatures. A clamping portion (112) protrudes from the mounting tube (11) of the anti-dry burning sensor, and the mounting member comprises a first mounting body (4) detachably connected to the burner head through an extension portion (42), a second mounting body (5) detachably connected to the first mounting body (4), a first clamping block (41) vertically sliding inside the first mounting body (4) and clamped with the clamping portion (112), and a second clamping block (51) vertically sliding inside the second mounting body (5) and clamped with the clamping portion (112), and a lifting member connected to the first clamping block (41) is provided on the first mounting body (4), and the lifting member drives the mounting tube (11) and the second clamping block (51) to be lifted and lowered simultaneously through the first clamping block (41) to ensure that the mounting tube (11) is installed at a suitable height position; The lifting member comprises a screw rod (45) rotatably connected to the inside of the first mounting body (4) and threadedly connected to the first clamping block (41), a ratchet wheel (46) fixedly sleeved on the circumference of the screw rod (45) and located below the first mounting body (4), a ratchet pawl (47) rotatably connected to the bottom surface of the first mounting body (4) and abutting against the ratchet wheel (46), and a leaf spring (48) arranged on the bottom surface of the first mounting body (4) and abutting against the ratchet pawl (47); The flame isolation device comprises a second fireproof cover (3) whose top end contacts the bottom of the pot, a connecting sleeve (31) fixedly connected to the bottom end of the second fireproof cover (3), a mounting sleeve (32) sleeved on the connecting sleeve (31), a second spring (33) arranged in the mounting sleeve (32) and a second mounting seat (34) movably sleeved on the peripheral side of the connecting sleeve (31), a second radially extending second limiting ring (321) is fixedly connected to the inner side wall of the mounting sleeve (32) and located at the bottom end opening of the mounting sleeve (32), a connecting ring (311) is fixedly sleeved on the peripheral side of the connecting sleeve (31), the second spring (33) is located between the connecting ring (311) and the second limiting ring (321), and a fire cover (35) is installed on the second mounting seat (34), and the fire cover (35) is fixedly sleeved on the peripheral side of the mounting sleeve (32); A first inclined surface (341) is arranged on the peripheral side of the second mounting seat (34), and a second inclined surface (36) is arranged on the peripheral side of the second fireproof cover (3), wherein the inclination direction of the second inclined surface (36) is consistent with the inclination direction of the first inclined surface (341).

2. A temperature sensor with a detachable flame isolation device according to claim 1, characterized in that: The second mounting seat (34) is located above the connecting ring (311), and the bottom surface of the second mounting seat (34) limits the connecting ring (311).

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