A heater

Abstract

The application relates to a warmer, belonging to the technical field of heating equipment, which comprises a base, a heating head and a liquid level pouring switch, the liquid level pouring switch being installed in the base; the liquid level pouring switch comprises a sealed induction shell, an input cable, a plurality of conductive foot filaments and an output cable. The induction shell is internally filled with a conductive liquid, the input cable is installed on the induction shell and is in contact with the conductive liquid, the conductive foot filaments are inserted into the induction shell and are in contact with the conductive liquid, the conductive foot filaments are provided in plurality, the plurality of conductive foot filaments are arranged in a circumferential interval in the induction shell, the plurality of conductive foot filaments are all connected with the output cable, and the output cable is connected with the heating head to supply power to the heating head; only when the plurality of conductive foot filaments are all in contact with the conductive liquid, the circuit in the input cable and the output cable can be connected and communicated. The application can improve the safety during the use of the warmer.

Description

Technical Field

[0001] This application relates to the field of heating equipment technology, and in particular to a heater. Background Technology

[0002] A heater is a device used for heating. A small electric heater is one type of heater. It primarily uses infrared halogen lamps for heating, while simultaneously employing a reflector to directionally reflect heat and infrared rays to achieve the heating effect.

[0003] In related technologies, a tilt switch is installed at the bottom of the small electric heater. This tilt switch includes a micro-switch and a resilient button. When the heater is upright, the resilient button, under the pressure of the heater itself, compresses the micro-switch, ensuring the heater's overall circuitry is connected and it functions normally. When the heater is completely tilted, the resilient button automatically pops out, ceasing to function on the micro-switch. This disconnects the heater's circuitry, preventing it from working and reducing the risk of accidents if it tilts while in operation.

[0004] As described above, the elastic button will only pop out to cut off the power to the small heater after it has completely tilted over. However, if the small heater does not tilt completely due to vibration or other reasons, but is only tilted at a certain angle due to other objects blocking its movement, the elastic button will not pop out to cut off the power. In this case, the tilted small heater will be closer to objects next to it, which reduces its safety. If no one notices it in time, it could easily cause a fire. Summary of the Invention

[0005] To improve the safety of heaters during use, this application provides a heater.

[0006] This application provides a heater that adopts the following technical solution:

[0007] A heater includes a base, a heating head, and a liquid level tilt switch. The liquid level tilt switch is installed inside the base, and the heating head is installed on the base to generate heat for the user to warm up.

[0008] The liquid level tilt switch includes a sensing housing, an input cable, conductive leads, and an output cable. The sensing housing is a sealed shell containing conductive liquid. The input cable is mounted on the sensing housing and in contact with the conductive liquid. The conductive leads are inserted into the sensing housing and in contact with the conductive liquid. Multiple conductive leads are arranged circumferentially within the sensing housing. Each conductive lead is connected to the output cable, which is connected to the heater head to supply power to it.

[0009] When all of the conductive pins are in contact with the conductive liquid, the circuit in the input cable is connected to the circuit in the output cable. If any one of the conductive pins is not in contact with the conductive liquid, the circuit in the input cable is not connected to the output cable.

[0010] Optionally, the liquid level tilt switch further includes a circuit junction box, and multiple conductive pins are connected to the circuit junction box. The output cable is connected to the multiple conductive pins through the circuit junction box.

[0011] Optionally, the sensing housing is provided with a dropper, which is connected to the interior of the sensing housing and contains a conductive liquid.

[0012] Optionally, the portion of the dropper located outside the sensing housing has an air pressure balancing port that communicates with the interior of the dropper, and a sealing plug is inserted into the air pressure balancing port.

[0013] Optionally, the heater head includes a head shell, an electric heating element installed inside the head shell, and a fan that blows the hot air generated by the electric heating element out of the shell. A rotary switch assembly for adjusting the heater to be turned on or off is installed on the head shell.

[0014] Optionally, the rotary switch assembly has a blowing mode that controls only the rotation of the fan and a heating mode that controls both the fan and the electric heating element to operate.

[0015] Optionally, the rotary switch assembly includes a rotary knob rotatably mounted on the head shell, a circuit distribution box fixedly mounted inside the head shell, and a circuit adjustment column connected to the rotary knob and inserted into the circuit distribution box. The circuit adjustment column rotates synchronously with the rotary knob, and the circuit distribution box is provided with a blower conductive component and a heating conductive component.

[0016] When the circuit adjustment column is rotated to the blowing position, the circuit of the blowing conductive component driving the fan is a complete closed electrical circuit, and the circuit of the electric heating element is in the open state.

[0017] When the circuit adjustment column is rotated to the heating position, the circuit of the blower conductive component driving the fan is a complete closed electrical circuit, and the circuit of the electric heating element is also a complete closed electrical circuit.

[0018] Optionally, the circuit distribution box has an adjustment slot on the side near the rotary knob for inserting and rotating the circuit adjustment post;

[0019] A first annular groove is formed on the outer wall of the circuit adjustment column, and a first conductive ring is installed on the side wall of the first annular groove. The blower conductive component includes a blower input end conductive sheet and a blower output end conductive sheet. The blower input end conductive sheet and the blower output end conductive sheet are arranged at intervals in the adjustment groove, and both the blower input end conductive sheet and the blower output end conductive sheet are inserted into the first annular groove. A first power-off notch is formed on the first conductive sheet.

[0020] When the heater is off, the conductive plate at the blower output end is located within the first power-off gap and does not contact the first conductive ring, while the conductive plate at the blower input end is in contact with the first conductive ring.

[0021] When the circuit adjustment column is rotated to the blower position, both the blower input conductive plate and the blower output conductive plate are in contact with the first conductive ring plate.

[0022] Optionally, a second annular groove is provided on the outer wall of the circuit adjustment column, which is spaced apart from the first annular groove. A second conductive ring is installed on the side wall of the second annular groove. The heating conductive component includes a heating input conductive plate and a heating output conductive plate. The heating input conductive plate and the heating output conductive plate are arranged at intervals in the adjustment groove, and both the heating input conductive plate and the heating output conductive plate are inserted into the second annular groove. A second power-off notch is provided on the second conductive plate.

[0023] When the heater is off or the circuit adjustment column is rotated to the blower position, the conductive sheet at the heating output end is located within the second power-off notch and does not contact the second conductive ring, while the conductive sheet at the heating input end is in contact with the second conductive ring.

[0024] When the circuit adjustment column is rotated to the heating position, both the heating input conductive plate and the heating output conductive plate are in contact with the second conductive ring.

[0025] Optionally, a rotating chassis is provided between the base and the heating head. The rotating chassis is rotatably mounted on the base, and the heating head is mounted on the rotating chassis and rotates synchronously with the rotating chassis. A drive motor for driving the rotating chassis to rotate is installed inside the base.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Since the input and output cables will be disconnected and the heater will lose power if any of the conductive support wires do not come into contact with the conductive liquid, the conductive liquid inside the sensor housing will also tilt when the heater is tilted. The conductive support wires inside the sensor housing that are opposite to the tilt direction will not come into contact with the conductive liquid, thus ensuring that the heater can be powered off even if it is not completely tilted, thereby improving the stability of the heater during use.

[0028] 2. Since the heater can only cut off power when one of the conductive leads protrudes from the conductive liquid surface and is not in contact with it after tilting, the sensitivity of the power-off function after the heater is tilted is related to the depth of the conductive lead below the conductive liquid surface. To increase the sensitivity of the power-off function when the heater is tilted, the conductive liquid inside the sensor housing can be drawn into the dropper. To decrease the sensitivity, the conductive liquid inside the dropper can be squeezed into the sensor housing. Thus, the sensitivity of the power-off function can be adjusted according to the actual usage conditions.

[0029] 3. The knob switch assembly can control the fan to run independently, allowing the heater to be used as a small fan during daily use. At the same time, when the heater's heating effect is turned off, the fan can run independently to blow air onto the electric heating element to accelerate cooling. When the knob switch assembly controls both the fan and the electric heating element to run, the fan can blow the hot air generated by the electric heating element further, thereby increasing the heating range. Attached Figure Description

[0030] Figure 1 This is an exploded view of the base and the heater head in an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the overall structure of the liquid level tilt switch in the embodiments of this application.

[0032] Figure 3 This is an exploded view of the base and rotating chassis in an embodiment of this application.

[0033] Figure 4 This is an exploded schematic diagram of the heater head in an embodiment of this application.

[0034] Figure 5 This is an exploded view of the rotary switch assembly in the embodiments of this application.

[0035] Figure 6 This is a cross-sectional view of the rotary switch assembly in an embodiment of this application.

[0036] Figure 7 This is an exploded view of the circuit adjustment column, the first conductive ring, and the second conductive ring in the embodiments of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Base; 11. Support base; 12. Fixed rotating shaft; 13. Rotating chassis; 131. Drive column; 14. Drive motor; 15. Arc-shaped groove; 16. Eccentric connecting rod; 17. Arc-shaped plate; 2. Heating head; 21. Head shell; 22. Inner shell; 23. Electric heating element; 24. Fan; 25. Knob switch assembly; 251. Rotary knob; 252. Circuit distribution box; 2521. Adjustment groove; 253. Circuit adjustment column; 2531. First annular groove; 2532. Second annular groove; 2533. First conductive ring; 2534. First power-off element. 2535. Second conductive ring; 2536. Second power-off gap; 254. Blower conductive assembly; 2541. Blower input conductive piece; 2542. Blower output conductive piece; 255. Heating conductive assembly; 2551. Heating input conductive piece; 2552. Heating output conductive piece; 26. Temperature control knob; 27. Air guide cover; 3. Liquid level tilt switch; 31. Induction housing; 32. Input cable; 33. Conductive support screw; 34. Output cable; 35. Circuit junction box; 36. Dropper; 361. Air pressure balance port; 362. Sealing plug. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0039] This application discloses a heater. (See also...) Figure 1 The heater includes a base 1, a heating head 2, and a liquid level tilt switch 3. The heating head 2 generates heat to warm the user. It is rotatably mounted on the base 1, enabling multi-angle, wide-range heating. The liquid level tilt switch 3 is installed inside the base 1. When the heater tilts but before it completely tipes over, the switch will cut off the power, making it safer to use. Furthermore, the sensitivity of the liquid level tilt switch 3 is adjustable, allowing it to cut off power instantly upon tipping or after a certain tilt angle, allowing users to adjust it according to their needs.

[0040] Reference Figure 1 and Figure 2 The base 1 includes a bottom support shell and a base plate. The bottom of the bottom support shell has a cavity for accommodating the liquid level pouring switch 3. The base plate is located at the opening of the bottom cavity of the bottom support shell and is used to cover the opening of the cavity. The base plate is fixed to the bottom support shell by bolts. The top of the base plate is provided with a support seat 11 for mounting the liquid level pouring switch 3.

[0041] Reference Figure 1 and Figure 2The liquid level tilt switch 3 includes a sensing housing 31, an input cable 32, conductive leads 33, an output cable 34, and a circuit junction box 35. The sensing housing 31 is filled with conductive liquid. One side of the input cable 32 is mounted on the sensing housing 31 and inserted into the sensing housing 31, contacting the conductive liquid; the other side is connected to a power source. One end of the conductive leads 33 is inserted into the sensing housing 31 and in contact with the conductive liquid; the other end protrudes from the sensing housing 31 and is exposed externally, connecting to the circuit junction box 35. Multiple conductive leads 33 are provided, arranged circumferentially at intervals inside the sensing housing 31, and all multiple conductive leads 33 are connected to the circuit junction box 35. One end of the output cable 34 is electrically connected to the circuit junction box 35, and the other end is connected to the heater head 2 to supply power to the heater head 2. Specifically, the circuit in the input cable 32 and the output cable 34 is connected only when all the conductive pins 33 are in contact with the conductive liquid. If the sensor housing 31 tilts and any one of the conductive pins is not in contact with the conductive liquid, then the circuit in the input cable 32 is not connected to the output cable 34. Regardless of the angle at which the heater is tilted, the input cable 32 is always in contact with the conductive liquid.

[0042] The sensing housing 31 is a sealed spherical shell made of transparent material, allowing for direct observation of the conductive liquid level inside. The sensing housing 31 is fixedly mounted on the support base 11. The input cable 32 is located on one side of the sensing housing 31 in the horizontal direction. Conductive leads 33 are inserted into the sensing housing 31 from the top, with the other end extending vertically upwards, thus positioning the circuit junction box 35 at the top of the sensing housing 31. Preferably, this embodiment has four conductive leads 33, evenly spaced around the central axis of the spherical sensing housing 31. Regardless of the direction the heater tilts, the conductive liquid level inside the sensing housing 31 will tilt, exposing one conductive lead 33 in the opposite direction, thus blocking the circuit in the circuit junction box 35 and protecting the heater from power loss.

[0043] It is worth noting that after the input cable 32 and the conductive support wire 33 are installed on the sensor housing 31, the sensor housing 31 remains a sealed housing, thus preventing the conductive liquid inside the sensor housing 31 from leaking out. Under the normal condition of the heater being placed vertically, the conductive support wire 33 will be inserted about one millimeter below the surface of the conductive liquid inside the sensor housing 31, thus ensuring that the conductive support wire 33 performs its conductive function while also making the power-off sensitivity high when the heater is tilted.

[0044] Reference Figure 2The outer wall of the sensor housing 31 is provided with a rubber dropper 36, which contains a portion of the same conductive liquid as that inside the sensor housing 31. The end of the rubber dropper 36 facing away from the rubber head is inserted into the sensor housing 31 and communicates with the inside of the sensor housing 31, while the rubber head end of the rubber dropper 36 is located outside the sensor housing 31. If it is desired to raise the liquid level of the conductive liquid inside the housing, thereby reducing the sensitivity of the heater to power off when it is tilted, the conductive liquid in the rubber dropper 36 can be directly squeezed into the sensor housing 31.

[0045] Reference Figure 2 Since the sensing housing 31 is a sealed housing, the rubber head of the dropper 36 will not automatically return to its initial state after the conductive liquid in the rubber tube is squeezed into the sensing housing 31. At this time, it is not easy to draw the conductive liquid in the holding housing into the dropper 36 to lower the liquid level in the holding housing, thereby improving the sensitivity of the heater to trip and cut off power when tilted. For this purpose, the rubber head of the dropper 36 has an air pressure balance port 361 that communicates with the inside of the dropper 36. The air pressure balance port 361 is filled with a sealing plug 362 that completely blocks the air pressure balance port 361. When it is necessary to draw the conductive liquid inside the housing into the dropper 36, the sealing plug 362 can be removed, allowing air from the outside atmosphere to enter the dropper 36 through the pressure balance port 361, thereby changing the pressure difference and restoring the rubber head of the dropper 36 to its original state. Then, the sealing plug 362 is inserted back into the pressure balance port 361 to block it. Finally, squeezing the dropper 36 will draw the conductive liquid inside the sensing housing 31 into the dropper 36, causing the liquid level inside the sensing housing 31 to drop.

[0046] Reference Figure 1 and Figure 3 A fixed rotating shaft 12 is provided at the top of the bottom support shell, and a rotating base plate 13 is sleeved on the fixed rotating shaft 12. The rotating base plate can rotate around the fixed rotating shaft 12 as the rotation axis. The heating head 2 is installed on the rotating base plate 13 and rotates synchronously with the bottom turntable. A drive motor 14 for driving the rotating base plate 13 is installed on the cavity wall at the top of the bottom support shell cavity by bolts.

[0047] Reference Figure 3A drive column 131 is integrally formed at the eccentric part of the bottom of the rotating chassis 13. An arc-shaped groove 15 is provided on the top of the bottom support shell for the drive column 131 to insert into and rotate within a certain angle range. An eccentric connecting rod 16 is mounted on the motor shaft of the drive motor 14, and the eccentric connecting rod 16 rotates under the rotation of the drive motor 14. An arc-shaped plate 17 is rotatably connected to the other side of the eccentric connecting rod 16, and the other side of the arc-shaped plate 17 is fitted onto the drive column 131 and rotatably connected to it. After the drive motor 14 rotates, it drives the eccentric connecting rod 16 to rotate synchronously. The rotation of the eccentric connecting rod 16 causes the arc-shaped plate 17 and the drive column 131 to reciprocate within the range of the arc-shaped groove 15, thereby driving the rotating chassis 13 to rotate the heating head 2.

[0048] Reference Figure 1 and Figure 4 The heater head 2 includes a head shell 21, an inner shell 22 installed inside the head shell 21, an electric heating element 23 installed on one side of the inner shell 22, and a fan 24 that blows the hot air generated by the electric heating element 23 out of the shell. A rotary switch assembly 25 for adjusting the heater's on / off state and a temperature control knob 26 for adjusting the temperature are installed on the top of the head shell 21. The rotary switch assembly 25 has a fan-only setting and a heating setting that controls both the fan 24 and the electric heating element 23.

[0049] Reference Figure 1 and Figure 4 The head shell 21 is formed by fastening two symmetrical shells together with bolts. To improve the aesthetics of the heater's surface, a rotating base plate is located inside the head shell 21. Multiple reinforcing ribs are spaced apart inside the head shell 21, and the inner shell 22 is confined within the head shell 21 by these reinforcing ribs. The electric heating element 23 and the fan 24 are respectively bolted to opposite sides of the inner shell 22. To ensure directional airflow, a wind guide shroud 27 is installed on the side of the inner shell 22 where the electric heating element 23 is mounted. The wind guide shroud 27 is trumpet-shaped, with the larger diameter end facing away from the inner shell 22, while the electric heating element 23 is located inside the wind guide shroud 27.

[0050] Reference Figure 4 and Figure 5 When the knob switch assembly 25 is in the blowing mode, the fan 24 operates independently, allowing the heater to be used as a small fan 24 during normal use. Simultaneously, when the heater's heating function is turned off, the fan 24's independent operation can accelerate the cooling of the electric heating element 23. When the knob switch assembly 25 is in the heating mode, with both the fan 24 and the electric heating element 23 operating, the fan 24 can dissipate the heat generated by the electric heating element 23 further, and the airflow guided by the air guide shroud 27 will expand the heating area.

[0051] Reference Figure 4 and Figure 5 The rotary switch assembly 25 includes a rotary knob 251 rotatably mounted on the head housing 21, a circuit distribution box 252 fixedly mounted inside the head housing 21, and a circuit adjustment column 253 connected to the rotary knob 251 and inserted into the circuit distribution box 252. The circuit distribution box 252 contains a blower conductive component 254 and a heating conductive component 255. Turning the rotary knob 251 drives the circuit adjustment column 253 to rotate. When the circuit adjustment column 253 is rotated to the blower position, the blower conductive component 254 drives the fan 24 in a complete closed electrical circuit, while the electric heating element 23 is in an open state. When the circuit adjustment column 253 is rotated to the heating position, the blower conductive component 254 drives the fan 24 in a complete closed electrical circuit, and the electric heating element 23 is also in a complete closed electrical circuit.

[0052] The cables in the circuits of fan 24 and electric heating element 23 are all connected to circuit distribution box 252, and a complete closed loop can only be formed through circuit distribution box 252.

[0053] Reference Figure 5 and Figure 6 The circuit distribution box 252 has an adjustment slot 2521 on the side near the rotary knob 251 for the circuit adjustment column 253 to be inserted and rotated. The blower conductive component 254 and the heating conductive component 255 are both inserted from the circuit distribution box 252 into the adjustment slot 2521 to cooperate with the circuit adjustment column 253. The blower conductive component 254 and the heating conductive component 255 are arranged vertically at intervals in the adjustment slot 2521, and the heating conductive component 255 is located below the blower conductive component 254.

[0054] Reference Figure 6 and Figure 7 The outer wall of the circuit adjustment column 253 is provided with a first annular groove 2531 for inserting the blower conductive component 254 and a second annular groove 2532 for inserting the heating conductive component 255. Since the blower conductive component 254 and the heating conductive component 255 are arranged at intervals along the vertical direction, the first annular groove 2531 and the second annular groove 2532 are also arranged at intervals along the vertical direction on the circuit adjustment column 253.

[0055] Combination Figure 5 Reference Figure 6 and Figure 7The blower conductive assembly 254 includes a blower input conductive plate 2541 and a blower output conductive plate 2542. The blower input conductive plate 2541 and the blower output conductive plate 2542 are arranged at intervals along the circumference of the circuit adjustment column 253 within the adjustment groove 2521, and both the blower input conductive plate 2541 and the blower output conductive plate 2542 are inserted into the first annular groove 2531. A first conductive ring plate 2533 is fixedly installed on the groove wall at the top of the first annular groove 2531. As the circuit adjustment column 253 rotates, both the blower input conductive plate 2541 and the blower output conductive plate 2542 can abut against the first conductive ring plate 2533. The circuit of the fan 24 can only be connected when both the blower input conductive plate 2541 and the blower output conductive plate 2542 are in contact with the first conductive ring plate 2533.

[0056] Combination Figure 5 Reference Figure 6 and Figure 7 The first conductive plate has a first power-off notch 2534. When the heater is off, the blower output conductive plate 2542 is located within the first power-off notch 2534 and does not contact the first conductive ring plate 2533, while the blower input conductive plate 2541 is in contact with the first conductive ring plate 2533. When the circuit adjustment column 253 is rotated to the blower position, both the blower input conductive plate 2541 and the blower output conductive plate 2542 are in contact with the first conductive ring plate 2533.

[0057] Combination Figure 5 Reference Figure 6 and Figure 7 The heating conductive component 255 includes a heating input conductive plate 2551 and a heating output conductive plate 2552. The heating input conductive plate 2551 and the heating output conductive plate 2552 are arranged at intervals along the circumference of the circuit adjustment column 253 within the adjustment groove 2521, and both the heating input conductive plate 2551 and the heating output conductive plate 2552 are inserted into the second annular groove 2532. A second conductive ring plate 2535 is fixedly installed on the groove wall at the top of the second annular groove 2532. As the circuit adjustment column 253 rotates, both the heating input conductive plate 2551 and the heating output conductive plate 2552 can abut against the second conductive ring plate 2535. The circuit of the electric heating block can only be connected when both the heating input conductive plate 2551 and the heating output conductive plate 2552 are in contact with the second conductive ring plate 2535.

[0058] The second conductive piece has a second power-off notch 2536, the diameter of which is larger than that of the first power-off notch 2534. When the heater is off or the circuit adjustment column 253 is rotated to the fan position, the heating output conductive piece 2552 is located within the second power-off notch 2536 and does not contact the second conductive ring 2535, while the heating input conductive piece 2551 is in contact with the second conductive ring 2535. When the circuit adjustment column 253 is rotated to the heating position, both the heating input conductive piece 2551 and the heating output conductive piece 2552 are in contact with the second conductive ring 2535.

[0059] The implementation principle of a heater according to an embodiment of this application is as follows: when the heater is tilted, the conductive liquid inside the sensing shell 31 will also tilt. The conductive support wires 33 inside the sensing shell 31 that are opposite to the tilting direction will leak out of the conductive liquid surface and not come into contact with the conductive liquid. Since any conductive support wire 33 does not come into contact with the conductive liquid, the input cable 32 and the output cable 34 will be disconnected, causing the heater to lose power. Therefore, the heater can be protected against power failure even if it is not completely tilted.

[0060] Since the heater can only be powered off when one of the conductive leads 33 is exposed and not in contact with the conductive liquid after tilting, the sensitivity of the heater to power off after tilting is related to the depth of the conductive lead 33 below the conductive liquid surface. If a higher sensitivity to power off when tilting is desired, the conductive liquid inside the sensing housing 31 can be drawn into the dropper 36. If a lower sensitivity to power off when tilting is desired, the conductive liquid inside the dropper 36 can be squeezed into the sensing housing 31.

[0061] When the fan 24 needs to operate independently, the rotary switch assembly is turned to the blowing position. At this time, the conductive plate 2541 at the blowing input end and the conductive plate 2542 at the blowing output end are connected through the first conductive plate to form a complete closed circuit. Meanwhile, the conductive plate 2552 at the heating output end is located at the second power-off notch 2536, making the circuit of the electric heating element 23 disconnected. In this state, the heater can be used as a small fan 24. At the same time, after the heater's heating effect is turned off, the fan 24 can run independently to blow air onto the electric heating element 23 to accelerate cooling.

[0062] When heating, the rotary switch assembly is turned to the heating position. The conductive sheet 2541 at the air blower input end and the conductive sheet 2542 at the air blower output end are connected through the first conductive sheet to form a complete closed loop. The conductive sheet 2551 at the heating input end and the conductive sheet 2552 at the heating output end are connected through the second conductive sheet to form a complete closed loop. This allows the electric heating element 23 to heat the surrounding air, while the fan 24 blows the hot air generated by the electric heating element 23 further away, increasing the heating range.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heater, characterized in that: It includes a base (1), a heating head (2) and a liquid level tilt switch (3). The liquid level tilt switch (3) is installed inside the base (1), and the heating head (2) is installed on the base (1) to generate heat for the user to keep warm. The liquid level tilt switch (3) includes a sensing housing (31), an input cable (32), conductive support wires (33), and an output cable (34). The sensing housing (31) is a sealed shell and the inside of the sensing housing (31) is filled with conductive liquid. The input cable (32) is installed on the sensing housing (31) and is in contact with the conductive liquid. The conductive support wires (33) are inserted into the inside of the sensing housing (31) and are in contact with the conductive liquid. There are multiple conductive support wires (33), which are arranged circumferentially at intervals inside the sensing housing (31). All of the multiple conductive support wires (33) are connected to the output cable (34). The output cable (34) is connected to the heater head (2) to supply power to the heater head (2). When all of the conductive pins (33) are in contact with the conductive liquid, the circuit in the input cable (32) and the output cable (34) is connected. If any one of the conductive pins is not in contact with the conductive liquid, the circuit in the input cable (32) is not connected to the output cable (34). The liquid level tilt switch (3) also includes a circuit junction box (35), and a plurality of conductive pins (33) are connected to the circuit junction box (35). The output cable (34) is connected to the plurality of conductive pins (33) through the circuit junction box (35). A dropper (36) is provided on the sensing housing (31). The dropper (36) is connected to the inside of the sensing housing (31), and the dropper (36) contains a conductive liquid.

2. A heater according to claim 1, characterized in that: The part of the dropper (36) located outside the sensing housing (31) has an air pressure balance port (361) that communicates with the inside of the dropper (36), and a sealing plug (362) is inserted into the air pressure balance port (361).

3. A heater according to claim 1, characterized in that: The heating head (2) includes a head shell (21), an electric heating element (23) installed in the head shell (21), and a fan (24) that blows the hot air generated by the electric heating element (23) out of the shell. A rotary switch assembly (25) for adjusting the heating to turn on or off is installed on the head shell (21).

4. A heater according to claim 3, characterized in that: The rotary switch assembly (25) has a blowing mode that controls only the rotation of the fan (24) and a heating mode that controls both the fan (24) and the electric heating element (23) to operate.

5. A heater according to claim 4, characterized in that: The rotary switch assembly (25) includes a rotary knob (251) rotatably mounted on the head shell (21), a circuit distribution box (252) fixedly mounted inside the head shell (21), and a circuit adjustment column (253) connected to the rotary knob (251) and inserted into the circuit distribution box (252). The circuit adjustment column (253) rotates synchronously with the rotary knob (251). The circuit distribution box (252) is provided with a blower conductive component (254) and a heating conductive component (255). When the circuit adjustment column (253) is rotated to the blowing position, the blowing conductive component (254) drives the fan (24) to form a complete closed electrical circuit, and the circuit of the electric heating element (23) is in the open state. When the circuit adjustment column (253) is rotated to the heating position, the blower conductive component (254) drives the fan (24) to form a complete closed electrical circuit, and the circuit of the electric heating element (23) is also a complete closed electrical circuit.

6. A heater according to claim 5, characterized in that: The circuit distribution box (252) has an adjustment slot (2521) on the side near the rotary knob (251) for the circuit adjustment column (253) to be inserted and rotated. The outer wall of the circuit adjustment column (253) is provided with a first annular groove (2531), and a first conductive ring plate (2533) is installed on the side wall of the first annular groove (2531). The blower conductive assembly (254) includes a blower input end conductive plate (2541) and a blower output end conductive plate (2542). The blower input end conductive plate (2541) and the blower output end conductive plate (2542) are arranged at intervals in the adjustment groove (2521), and both the blower input end conductive plate (2541) and the blower output end conductive plate (2542) are inserted into the first annular groove (2531). A first power-off notch (2534) is provided on the first conductive ring plate (2533). When the heater is off, the conductive plate (2542) at the blower output end is located within the first power-off notch (2534) and does not contact the first conductive ring (2533), while the conductive plate (2541) at the blower input end is in contact with the first conductive ring (2533). When the circuit adjustment column (253) is rotated to the blower position, the blower input conductive plate (2541) and the blower output conductive plate (2542) are both in contact with the first conductive ring plate (2533).

7. A heater according to claim 6, characterized in that: The outer wall of the circuit adjustment column (253) is provided with a second annular groove (2532) spaced apart from the first annular groove (2531). A second conductive ring plate (2535) is installed on the side wall of the second annular groove (2532). The heating conductive component (255) includes a heating input conductive plate (2551) and a heating output conductive plate (2552). The heating input conductive plate (2551) and the heating output conductive plate (2552) are spaced apart in the adjustment groove (2521), and both the heating input conductive plate (2551) and the heating output conductive plate (2552) are inserted into the second annular groove (2532). A second power-off notch (2536) is provided on the second conductive ring plate (2535). When the heater is off or the circuit adjustment column (253) is rotated to the blower position, the heating output conductive plate (2552) is located in the second power-off notch (2536) and does not contact the second conductive ring (2535), while the heating input conductive plate (2551) contacts the second conductive ring (2535). When the circuit adjustment column (253) is rotated to the heating position, the heating input conductive plate (2551) and the heating output conductive plate (2552) are both in contact with the second conductive ring plate (2535).

8. A heater according to claim 1, characterized in that: A rotating base (13) is provided between the base (1) and the heating head (2). The rotating base (13) is rotatably mounted on the base (1). The heating head (2) is mounted on the rotating base (13) and rotates synchronously with the rotating base (13). A drive motor (14) for driving the rotating base (13) to rotate is installed inside the base (1).

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