A heater

Abstract

A kind of heater, including base, auxiliary heating unit, heating pad and control unit;The auxiliary heating unit is located above the base;The heating pad is connected with the base, and can be moved between heating position and storage position;When the heating pad is located in the heating position, the heating pad is located in the front of the auxiliary heating unit, and the heating surface of the heating pad faces upwards;When the heating pad is located in the storage position, the heating surface of the heating pad is covered by the auxiliary heating unit;The control unit is electrically connected with the auxiliary heating unit, the heating pad respectively.The heater of the present application can heat in two different directions at the same time compared with prior art, so that container is heated evenly, and can improve heating speed.

Description

Technical Field

[0001] This invention relates to the field of electrothermal technology, and in particular to a heater. Background Technology

[0002] In daily life, people often heat food to a suitable temperature before eating it to prevent bacterial growth, ensure nutritional value, and fully bring out the flavor. For example, people use boiling water to make tea or coffee. However, beverages made with boiling water are initially too hot to drink immediately and need to be left to cool at room temperature for a while. But the cooling time is difficult to control, and if you're not careful, you might miss the optimal drinking temperature, requiring reheating to avoid affecting hygiene or flavor.

[0003] To ensure food can be consumed at a suitable temperature, various devices have been designed to heat and keep food warm. For example, patent CN201899288U discloses an electric heated coaster, which includes a coaster, a heater, and a USB power cord. The heater is disposed inside the coaster and located near the top of the coaster, thus forming a heating surface above the coaster. The USB power cord is electrically connected to the heater. When heating or keeping warm, a container holding food, beverages, etc., is placed on the heating surface. The USB power cord is connected to an external power source and supplies power to the heater, causing it to heat up. Heat is transferred through the heating surface to the container, thereby heating the food inside.

[0004] However, the applicant discovered that the aforementioned electric coasters, which function as traditional heaters, primarily heat the bottom of the container, resulting in a significantly higher temperature at the bottom than at the top. This is particularly pronounced with large or tall containers, leading to uneven temperature distribution and slow heating of the food inside. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a heater that ensures uniform heating of the container during heating.

[0006] The technical solution adopted in this invention is as follows:

[0007] A heater includes a base, an auxiliary heating unit, a heating pad, and a control unit; the auxiliary heating unit is located above the base; the heating pad is connected to the base and is movable between a heating position and a storage position; when the heating pad is in the heating position, it is located in front of the auxiliary heating unit, and the heating surface of the heating pad faces upward; when the heating pad is in the storage position, the heating surface of the heating pad is covered by the auxiliary heating unit; the control unit is electrically connected to the auxiliary heating unit and the heating pad respectively.

[0008] Compared with the prior art, the heater of the present invention can heat in two different directions at the same time, so that the container is heated evenly and the heating speed can be improved.

[0009] In some embodiments, a locking unit is also included; the locking unit locks the heating pad in the storage position to facilitate storage of the heating pad.

[0010] In some embodiments, the auxiliary heating unit is rotatable relative to the base about a first axis; the heating pad is hinged to one side of the base and is rotatable about a second axis and folded onto the auxiliary heating unit; the first axis extends in a vertical direction; the second axis is perpendicular to the first axis to improve the storage capacity of the heating pad.

[0011] In some embodiments, the locking unit includes a first locking member and a second locking member; the first locking member is disposed on one side of the auxiliary heating unit, and the second locking member is disposed on the heating pad; when the heating pad is in the storage position, the first locking member and the second locking member engage with each other to fix the heating pad to the auxiliary heating unit.

[0012] In some embodiments, a storage groove is recessed on one side of the auxiliary heating unit; when the heating pad is in the storage position, the heating pad is located in the storage groove and does not protrude from the outside of the auxiliary heating unit, further improving the storage capacity of the heating pad.

[0013] In some embodiments, the base is provided with a mounting hole, a mounting seat, and a shaft hole; the mounting hole is opened on one side facing the auxiliary heating unit; the mounting seat is fixed inside the base; the shaft hole is opened on the mounting seat; the axes of the mounting hole and the shaft hole coincide with the first axis; the auxiliary heating unit is provided with a mounting ring and a rotating shaft protruding on one side facing the base; the mounting ring surrounds the outside of the rotating shaft and is coaxial with it; the rotating shaft is inserted into the shaft hole, and the mounting ring is placed in the mounting hole and coaxially connected with it, thereby improving the installation stability of the auxiliary heating unit on the base.

[0014] In some embodiments, the mounting base has a guide groove that surrounds the outside of the shaft hole and extends circumferentially along the shaft hole; the auxiliary heating unit also has a guide hole on one side facing the base, the axis of the guide hole being parallel to the first axis; the auxiliary heating unit includes a guide assembly; the guide assembly includes a guide post and a guide post seat, the guide post seat being placed inside the base and inserted into the guide groove, and being able to slide relative to the guide groove; one end of the guide post is inserted into the guide hole, and the other end is inserted into the guide post seat, so as to guide the auxiliary heating unit when it rotates.

[0015] In some embodiments, the control unit includes a safety switch; the safety switch protrudes from the bottom surface of the storage slot and can extend and retract inside and outside the storage slot. When the heating pad enters the storage slot, it can trigger the control unit to turn off the heating pad, thereby stopping the heating and achieving energy saving.

[0016] In some embodiments, the auxiliary heating unit is fixed above the base; the heating pad is axially connected to the base and can rotate relative to the base about a first axis and fold about a second axis to the auxiliary heating unit; the first axis extends in the vertical direction; the second axis is perpendicular to the first axis; the heating surface of the heating pad is located outside the base, realizing another relative movement mode between the auxiliary heating unit and the heating pad.

[0017] In some embodiments, the auxiliary heating unit is fixed above the base; the heating pad is located inside the base and can translate relative to the base, with the heating surface of the heating pad facing the auxiliary heating unit; in the storage position, the heating surface is located inside the base; in the heating position, the heating surface is located outside the base, realizing another relative movement mode between the auxiliary heating unit and the heating pad.

[0018] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the heating pad in the storage position according to Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the heating pad when it is in the heating position according to Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the heater during heating in Embodiment 1 of the present invention;

[0022] Figure 4 This is an exploded view of the heater in Embodiment 1 of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure when the heating pad is connected to the base in Embodiment 1 of the present invention;

[0024] Figure 6 This is a schematic diagram of the base structure after the top plate is disassembled in Embodiment 1 of the present invention;

[0025] Figure 7 This is a front view of the auxiliary heating unit in Embodiment 1 of the present invention;

[0026] Figure 8 For along Figure 7 The projection diagram of the projection along direction A in the image;

[0027] Figure 9 For along Figure 7 The projection diagram of the B direction in the image;

[0028] Figure 10 For along Figure 7 The sectional projection of the line WW section in the middle;

[0029] Figure 11 For along Figure 10 The sectional projection of the YY section in the middle;

[0030] Figure 12 For along Figure 10 The sectional projection of line XX in the middle;

[0031] Figure 13 For along Figure 10 A partial projection of the C-direction projection in the image;

[0032] Figure 14 This is a schematic diagram of the locking unit in another embodiment;

[0033] Figure 15 This is a schematic cross-sectional view of the heater in Embodiment 2 of the present invention;

[0034] Figure 16 This is a schematic diagram of the connection between the heating pad and the base in Embodiment 2 of the present invention;

[0035] Figure 17 This is a schematic cross-sectional view of the heater in Embodiment 3 of the present invention;

[0036] Figure 18 For along Figure 17 A partial sectional projection of the ZZ section in the diagram.

[0037] Reference numerals: 10. Base; 11. Base shell; 111. Inner bottom surface of base; 112. Rotation space; 113. Base opening; 114. Inner wall surface of base; 115. Guide groove; 116. Locking channel; 12. Top plate; 121. Mounting hole; 13. Mounting seat; 131. Shaft hole; 132. Guide groove; 132A. First guide groove; 132B. Second guide groove; 14. Positioning ring; 15. Rotation space; 20. Auxiliary heating unit; 21. Auxiliary shell; 211. Side; 212. Bottom surface; 213. Top surface; 214. Front opening; 215. Rear opening; 216. Rotating shaft; 217. Storage groove; 218. Mounting ring; 219. Guide hole; 220. Boss; 22. Heating element; 23. Fan; 24. Front mesh cover; 25. Rear mesh cover; 26. 1. Sliding assembly; 261. Upper ring; 262. Middle ring; 263. Lower ring; 264. Ball bearing; 27. Guide assembly; 271. Guide post; 272. Guide post seat; 30. Heating pad; 31. Heating surface; 32. Body; 33. Connector; 34. Locking groove; 35. Connecting plate; 36. Rotating shaft; 37. Bottom surface of heating pad; 38. Guide block; 381. Extension; 382. Engaging part; 39. Safety protrusion; 40. Control unit; 41. Safety switch; 42. Spring; 50. Locking unit; 51. First locking element; 511. Elastic element; 512. Spring; 513. First engaging protrusion; 514. Knob; 515. Connecting rod; 516. Locking block; 52. Second locking element; 521. Second engaging protrusion; 100. Container; A. First axis; B. Second axis. Detailed Implementation

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, the term “and / or” as used herein is intended to include all possible combinations of one or more of the associated listed items; the singular forms “a,” “an,” and “described” as used herein are intended to include both singular and plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “equivalent to” as used herein mean the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or components.

[0039] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, unless explicitly defined herein, the meanings of terms such as those found in common dictionaries should be consistent with their meanings in the relevant field and in the context of this document, rather than idealized or overly formalized meanings.

[0040] Numerous techniques and steps have been disclosed in the description of this invention. It should be understood that each of these techniques and steps has its own advantages, and each can be used in conjunction with one or more, or in some cases, all other disclosed techniques. Therefore, for clarity, this document will avoid unnecessary repetition of the various possible combinations of the individual steps. Of course, it should be made clear that these combinations are entirely within the scope of this invention and the claims.

[0041] In the following description, numerous specific details are set forth for ease of explanation and thorough understanding of the invention. However, it will be apparent that those skilled in the art can practice the invention without providing these specific details.

[0042] This disclosure is for the purpose of describing embodiments of the invention only, and is not intended to limit the invention to the specific embodiments illustrated in the following drawings or description. It is well known to those skilled in the art that many careful considerations and compromises must be made when designing the optimal configuration for a commercial implementation of any system, particularly embodiments of the invention. Based on the spirit and teachings of the invention, those skilled in the art can configure their commercial implementations according to the needs of a particular application, utilizing their average skill and known techniques, appropriately omitting, including, modifying, mixing, and matching, or improving and / or optimizing any one or more aspects, features, functions, results, components, methods, or steps related to any embodiment described in the invention to obtain a commercial implementation for the desired particular application.

[0043] Please refer to the following: Figures 1 to 3The heater of the present invention includes a base 10, an auxiliary heating unit 20, a heating pad 30, a control unit 40, and a locking unit 50. Both the auxiliary heating unit 20 and the heating pad 30 are mounted on the base 10. The heating pad 30 moves relative to the base 10 between a storage position and a heating position. The control unit 40 is electrically connected to both the auxiliary heating unit 20 and the heating pad 30 to control their switching. During heating, the heating pad 30 moves to the heating position with its heating surface 31 facing upwards, so that after the heating pad 30 is close to the front of the auxiliary heating unit 20, a container 100 containing the object to be heated is placed above the heating surface 31 of the heating pad 30, with the side of the container 100 directly facing the auxiliary heating unit 20. The auxiliary heating unit 20 and the heating pad 30 are activated by the control unit 40. The heating pad 30 heats the bottom surface of the container 100, while the auxiliary heating unit 20 heats the sides of the container 100, heating the container 100 from two different directions to ensure even heating and increase the heating speed. When heating stops, the auxiliary heating unit 20 and the heating pad 30 are deactivated by the control unit 40, and the container 100 is removed from the heating pad 30. The heating pad 30 is then moved to the storage position, with its heating surface 31 covered by the auxiliary heating unit 20 to prevent user contact and improve storage efficiency. In one embodiment, the heater further includes a locking unit 50 disposed between the auxiliary heating unit 20 and the heating pad 30, which locks the heating pad 30 in the storage position. Furthermore, in some embodiments, the heating pad 30 can be positioned relative to the base 10 by its own weight, without the need for the locking unit 50. The following are some embodiments for implementing the above operations.

[0044] Example 1:

[0045] Please see Figure 4 In this embodiment, the auxiliary heating unit 20 is placed above the base 10 and can rotate about a first axis A, which extends vertically. The heating pad 30 is hinged to the base 10 and can rotate relative to the base 10 about a second axis B, which is perpendicular to the first axis A. As the heating pad 30 rotates, it moves between the storage position and the heating position. When the heating pad 30 is in the storage position, the heating surface 31 of the heating pad 30 faces the auxiliary heating unit 20 and is fixed to one side of the auxiliary heating unit 20, and the first axis A is parallel to the heating surface 31 of the heating pad 30; when the heating pad 30 is in the heating position, the first axis A is perpendicular to the heating surface 31 of the heating pad 30.

[0046] For details, please refer to the following: Figure 5 and Figure 6 The base 10 includes a base shell 11, a top plate 12, a mounting base 13, and a positioning ring 14. The base shell 11 is hollow inside, with an opening on its upper side. The inner bottom surface 111 of the base shell 11 faces the opening. The top plate 12 covers the opening of the base shell 11. The top plate 12 and the inner bottom surface 111 of the base are separated by a certain distance by protrusions, ribs, etc. The top plate 12 has a mounting hole 121 for positioning the auxiliary heating unit 20 on the top plate 12. The axis of the mounting hole 121 is parallel to the first axis A and perpendicular to the surface of the top plate 12. The auxiliary heating unit 20 is mounted above the top plate 12. In this embodiment, there is a certain gap between the auxiliary heating unit 20 and the top plate 12 to facilitate the rotation of the auxiliary heating unit 20. The mounting base 13 protrudes from the inner bottom surface 111 of the base, and its height relative to the inner bottom surface 111 is less than the distance from the top plate 12 to the inner bottom surface 111 of the base. The mounting base 13 has a shaft hole 131 and a guide groove 132. The axis of the shaft hole 131 coincides with the first axis A. The guide groove 132 surrounds the outside of the shaft hole 131 and extends circumferentially along the shaft hole 131. In this embodiment, the guide groove 132 includes a first guide groove 132A and a second guide groove 132B. Projected along the axis of the shaft hole 131, the center lines of the first guide groove 132A and the second guide groove 132B are equidistant from the axis of the shaft hole 131. The guide groove 132 guides the rotation of the auxiliary heating unit 20. The positioning ring 14 protrudes from the inner bottom surface 111 of the base and surrounds the outside of the mounting base 13, and its axis coincides with the first axis A. The positioning ring 14 is positioned at a height less than the mounting base 13 on the inner bottom surface 111 of the base. The positioning ring 14 is used to support the auxiliary heating unit 20. The heating pad 30 is hinged to one side of the base housing 11, and its hinge axis is perpendicular to the first axis A.

[0047] Please refer to the following: Figures 7 to 11The auxiliary heating unit 20 includes an auxiliary housing 21, a heating element 22, a fan 23, a front mesh cover 24, a rear mesh cover 25, a sliding assembly 26, and a guide assembly 27. The housing 21 has a side surface 211, a bottom surface 212, and a top surface 213. The bottom surface 212 and the top surface 213 are opposite each other, and the side surface 211 connects the bottom surface 212 and the top surface 213, forming an internal installation space (not labeled). The side surface 211 has a front opening 214 and a rear opening 215 facing each other. The front mesh cover 24 and the rear mesh cover 25 respectively cover the front opening 214 and the rear opening 215 to guide airflow. The heating element 22 and the fan 23 are located in the internal installation space and are electrically connected to the control unit 40. In this embodiment, the fan 23 is located near the rear opening 215, and the heating element 22 is located near the front opening 214. When the fan 23 rotates, airflow enters the internal installation space from the rear opening 21, flows through the heating element 22, and then flows out from the front opening 214, flowing to the front of the front opening 214. The heating element 22 is a heating wire, heating tube, etc., as found in conventional heaters. The bottom surface 212 faces the base 10 and is provided with a rotating shaft 216 protruding from the base 10. The rotating shaft 216 is inserted into the shaft hole 131 of the base 10, and its axis coincides with the first axis A. When the heating pad 30 is in the storage position, the heating surface 31 of the heating pad 30 faces the side surface 211 and is locked onto the side surface 211. Furthermore, the side surface 211 is recessed with a storage groove 217, which is located between the front opening 214 and the rear opening 215, with its bottom surface facing outward. The height of the heating pad 30 is less than or equal to the height of the storage groove 217. When the heating pad 30 is locked to the side 211, it is placed inside the storage groove 217 without protruding outside the side 211, thus improving storage capacity. The bottom surface 212 also has a protruding mounting ring 218 and a guide hole 219. The mounting ring 218 surrounds the outside of the rotating shaft 216 and is coaxial with it. The sliding component 26 is sleeved around the mounting ring 218, and the side of the sliding component 26 facing the base 10 abuts against the positioning ring 14. The mounting ring 218, together with the sliding component 26, is placed inside the mounting hole 121 and coaxially connected thereto, achieving positioning of the sliding component 26 within the mounting hole 121, improving the stability of the auxiliary heating unit 20 when installed on the base 10, and reducing the possibility of the rotating shaft 216 breaking due to stress concentration. The height of the mounting ring 218 from the bottom surface 212 is less than the height of the rotating shaft 216 from the bottom surface 212.In this embodiment, the mounting ring 218 includes a first mounting ring 218A and a second mounting ring 218B. The diameter of the second mounting ring 218B is larger than the diameter of the first mounting ring 218A. The sliding assembly 26 is clamped between the first mounting ring 218A and the second mounting ring 218B. The sliding assembly 26 includes an upper ring 261, a middle ring 262, a lower ring 263, and ball bearings 264. The middle ring 262 has multiple through holes with axes parallel to the first axis A. Multiple ball bearings 264 are respectively embedded in the through holes of the middle ring 262 and protrude from its upper and lower sides. The upper ring 261 and the lower ring 263 respectively cover the upper and lower sides of the middle ring 262 and clamp them. The upper ring 261 and the lower ring 263 are respectively provided with circumferentially extending arc grooves, and the openings of each arc groove face the middle ring 262. The upper and lower protruding sides of the ball bearing 264 are respectively located within the arcuate grooves of the upper ring 261 and the lower ring 263, and can roll relative to the upper ring 261, the middle ring 262, and the lower ring 263. The side of the lower ring 263 facing away from the upper ring 261 abuts against the upper side of the positioning ring 14. When the auxiliary heating unit 20 is rotated, the upper ring 261 pushes the ball bearing 264, and drives the lower ring 263 to rotate through rolling friction, thereby realizing the sliding of the auxiliary heating unit 20 relative to the base 10. Compared with sliding friction, rolling friction has less resistance, making the rotation of the auxiliary heating unit 20 smooth. Furthermore, the upper ring 261, the middle ring 262, the lower ring 263, and the ball bearing 264 are all made of POM material to improve rigidity and wear resistance. The guide hole 219 is opened on the bottom surface 212, and its axis is parallel to the first axis A. The guide assembly 27 is inserted into the guide hole 219. In this embodiment, since the auxiliary heating unit 20 has a certain weight, a boss 220 can be provided on the bottom surface 212, and then the guide hole 219 is opened on the boss 220. The guide assembly 27 supports the boss 220 to reduce the surface contact between the bottom surface 212 and the top plate 12 of the base 10, thereby reducing the frictional resistance when rotating the auxiliary heating unit 20. In this embodiment, the guide hole 219 includes a first guide hole 219A and a second guide hole 219B. Projected along the first axis A, the center of the first guide hole 219A and the second guide hole 219B are equidistant from the axis of the rotating shaft 216. The guide assembly 27 includes a guide post 271 and a guide post seat 272. One end of the guide post 271 is inserted into the guide post seat 272, and the other end is inserted into the guide hole 219. The guide post seat 272 is placed on the inner bottom surface 111 of the base and inserted into the guide groove 132, and can slide relative to the guide groove 132.The guide post seat 272 is stepped, and in the direction of the first axis A, its cross-sectional area on the side near the inner bottom surface 111 of the base is larger than the cross-sectional area on the side inserted into the guide groove 132. In this embodiment, there are two guide components 27, which pass through the first guide groove 132A and the second guide groove 132B respectively, and the two guide post seats 272 abut against each of the bosses 220. The guide post seat 272 supports the auxiliary heating unit 20 through the bosses 220. When the auxiliary heating unit 20 is rotated, the guide post seat 272 slides in the guide groove 132 for guidance.

[0048] The heating pad 30 is hinged to the base housing 11, and has a heating wire inside. The heating surface 31 is located on one side. The heating pad 30 is electrically connected to the control unit 40. Under the control of the control unit 40, the heating pad 30 is energized, and its heating surface 31 emits heat. In the heating position, the heating surface 31 faces upward and is perpendicular to the first axis A. In the storage position, the heating surface 31 faces the side 211 and is located in the storage groove 217. Furthermore, the heating pad 30 also has a body 32 and a connector 33. One side of the connector 33 is hinged to the base housing 11, and the other side is hinged to the body 32. The two hinge axes of the connector 33 are parallel to the second axis B and perpendicular to the first axis A. The heating surface 31 is located on the body 32.

[0049] The control unit 40 has an integrated circuit board (not shown) located within the internal installation space and connected to a power cord. It is electrically connected to the heating element 22, the fan 23, and the heating pad 30. By touching the buttons on the integrated circuit board, the on / off states of the heating element 22, the fan 23, and the heating pad 30 can be individually controlled as needed, making efficient use of the heat emitted by the auxiliary heating unit 20 and the heating pad 30. (See also...) Figure 12 The control unit 40 is also equipped with a safety switch 41 electrically connected to the integrated circuit board. The safety switch 41 protrudes from the bottom surface of the storage slot 217 and can extend and retract into the auxiliary housing 211. When the heating pad 30 is placed in the storage slot 217, the heating pad 30 presses the safety switch 41, pushing it into the auxiliary housing 21 and pressing the spring piece 42 located in the auxiliary housing 21, thereby triggering the integrated circuit board to shut off the heating pad 30 to prevent the heating pad 30 from continuing to generate heat after being stored in the storage slot 217.

[0050] Please refer to the following: Figure 12 and Figure 13The locking unit 50 includes a first locking member 51 and a second locking member 52. The first locking member 51 and the second locking member 52 are respectively disposed in the storage groove 217 and locked onto the heating pad 30 to lock the heating pad 30 into the storage groove 217. In this embodiment, the locking unit 50 adopts a push-button locking structure. When the heating pad 30 is pushed towards the auxiliary heating unit 20, the lock between the heating pad 30 and the auxiliary heating unit 20 can be released, and the heating pad 30 can be ejected from the storage groove 217. Specifically, the first locking member 51 is inserted into the bottom of the storage groove 217 and can slide relative to the storage groove 217. One end of the first locking member 51 is located in the storage groove 217, and the other end is located in the internal mounting space and is connected to the elastic member 511 fixed in the internal mounting space. The elastic member 511 can be a spring or the like. Projected along the first axis A, the first locking member 51 has two spring pieces 512. From the opening of the receiving groove 217 towards the bottom, the distance between the two spring pieces 512 gradually decreases. Each of the two spring pieces 512 has a first engaging protrusion 513 on its opposite side. The first engaging protrusion 513 is located at the end of the spring piece 512 furthest from the auxiliary heating unit 20. The two spring pieces 512 are made of a material capable of elastic deformation. A locking groove 34 is provided on the side of the heating surface 31 of the heating pad 30. Projected along a direction parallel to the heating surface 31, the width of the opening of the locking groove 34 is greater than the width of its bottom. The second locking member 52 protrudes into the bottom of the locking groove 34, and has second engaging protrusions 521 on both sides. There is a certain gap between the second engaging protrusions 521 and the bottom of the locking groove 34. When stored, the opening of the locking groove 34 faces the storage groove 217. Two spring pieces 512 enter the locking groove 34 from the opening. As the width of the locking groove 34 decreases, the two spring pieces 512 move closer to each other, and the two first engaging protrusions 513 engage with the two second engaging protrusions 521 respectively. When the heating pad 30 tends to leave the storage groove 217, the second locking member 52 pulls the first locking member 51 to move away from the internal installation space. The elastic member 511 is stretched and generates a pulling force away from the heating pad 30 and pointing towards the internal installation space. The first locking member 51 pulls the second locking member 52 towards the internal installation space, thereby locking the heating pad 30 into the storage groove 217. When the heating pad 30 is opened, a pressing force is applied to the heating pad 30 toward the bottom of the storage groove 217. The first engaging protrusion 513 is released from engagement with the second engaging protrusion 521. The second locking member 52 pushes the first locking member 51 toward the internal mounting space. The elastic member 511 is compressed and generates a thrust pointing toward the heating pad 30 and away from the internal mounting space.The pushing force reacts to the second locking member 52 through the first locking member 51, causing the heating pad 30 to tend to move away from the storage groove 217. After the pressing force is released, the pushing force ejects the second locking member 52, causing the heating pad 30 to move away from the storage groove 217. The first engaging protrusion 513 re-engages with the second engaging protrusion 521 and pulls the first locking member 51 away from the storage groove 217 until the elastic member 511 is stretched by the first locking member 51, generating a pulling force pointing towards the internal mounting space. Therefore, the first locking member 51 and the second locking member 52 have different directional movement tendencies, and the two elastic pieces 512 undergo elastic deformation and separate. As the first locking member 51 moves towards the opening of the storage groove 217, the first engaging protrusion 513 separates from the second engaging protrusion 521, and the lock is released.

[0051] What is special is that, in addition to the push-button locking structure, the first locking member 51 and the second locking member 52 of the locking unit 50 can also employ other interlocking structures. For example, in another embodiment, Figure 14 As shown, the first locking member 51 includes a knob 514, a connecting rod 515, and a locking block 516. The knob 514 is located on the side of the heating pad 30 facing away from the heating surface 31 and can rotate about an axis perpendicular to the heating surface 31. The connecting rod 515 connects the knob 514 and the locking block 516. The second locking member 52 is an opening formed in the wall of the storage groove 217. Rotating the knob 514 causes the locking block 516 to rotate accordingly. When it extends into the second locking member 52, it locks; when it extends into the second locking member 52, it unlocks. This also achieves the locking of the heating pad 30 on the auxiliary heating unit 20. In addition, the locking unit 50 can also be an interlocking structure such as a magnetic pair or a suction cup pair, which will not be described in detail here.

[0052] In this embodiment, during heating, the first locking member 51 and the second locking member 52 are first operated to release their locking state, and the heating pad 30 is rotated to position it in the heating position. The container 100 is placed on the heating surface 31 of the heating pad 30. Then, the auxiliary heating unit 20 is rotated so that its front opening 214 faces the container 100. Next, the heating pad 30 and the heating element 22 are energized by the control unit 40 to heat them up, and the fan 23 blows hot air onto the container 100. When heating is stopped, the heating pad 30 and the heating element 22 are turned off by the control unit 40, and the auxiliary heating unit 20 is rotated so that the storage slot 217 is close to the heating pad 30. Finally, the heating pad 30 is folded into the storage position, and the first locking member 51 and the second locking member 52 interlock to lock it.

[0053] Example 2:

[0054] Please refer to the following: Figure 15 and Figure 16 In this embodiment, the structure of the heater is basically the same as that of the heater in Embodiment 1, including a base 10, an auxiliary heating unit 20, a heating pad 30, a control unit 40, and a locking unit 50. The difference lies in that the auxiliary heating unit 20 is fixed to the base 10, and the heating pad 30 is axially connected to the base 10, allowing it to rotate around the first axis A and fold around the second axis B, thereby enabling movement between the storage position and the heating position. The first axis A extends vertically from the auxiliary heating unit 20 to the base 10, and the second axis B is perpendicular to the first axis A and located outside the base 10. The heating surface 31 of the heating pad is located outside the base 10. When the heating pad 3 is placed in the storage position, the heating pad 30 is folded so that its heating surface 31 faces the side 211 of the auxiliary heating unit 20 and is fixed to one side of the auxiliary heating unit 20. The first axis A is parallel to the heating surface 31 of the heating pad 30. When the heating pad 30 is placed in the heating position, the heating pad 30 is folded so that its heating surface 31 faces upward and is perpendicular to the first axis A. Then, it is rotated around the first axis A so that the heating pad 30 is close to the front opening 214 of the auxiliary heating unit 20.

[0055] The detailed structure of the auxiliary heating unit 20 can be found in Embodiment 1, including an auxiliary housing 21, a heating element 22, a fan 23, a front mesh cover 24, and a rear mesh cover 25. A storage groove 217 is provided on the side 211 of the auxiliary housing 21. When the heating pad 30 is in the storage position, the heating pad 30 folds into the storage groove 217. The auxiliary housing 21 is fixed above the base 10.

[0056] The base 10 has a rotation space 112 inside, which connects from below the front opening 214 of the auxiliary heating unit 20 to below the storage groove 217, so that the heating pad 30 can rotate between below the storage groove 217 and below the front opening 214.

[0057] The heating pad 30 includes a heating surface 31, a body 32, a connector 33, a connecting plate 35, and a rotating shaft 36. The heating surface 31 is disposed on the body 32. The rotating shaft 36 is inserted into the base 10 and can rotate around the first axis A. The connecting plate 35 is fixedly connected to the rotating shaft 36. The connector 33 is located outside the base 10, with one end hinged to the body 32 and the other end hinged to the connecting plate 35. Both hinge axes are parallel to the second axis B. The second axis B is parallel to the heating surface 31. In addition, similar to Embodiment 1, to facilitate the rotation of the heating pad 30 around the first axis A, the mounting base 13 and the positioning ring 14 can be provided on the base 10, and a sliding component and a guide component can be provided on the plate surface of the connecting plate 35 facing away from the auxiliary heating unit 20; to facilitate locking the heating pad 30 in the storage slot 217 of the auxiliary heating unit 20, locking units 50 including the first locking member 51 and the second locking member 52 can be provided on the heating pad 30 and the storage slot 217 of the auxiliary heating unit 20, respectively. For detailed structure, please refer to Embodiment 1, which will not be repeated here.

[0058] In this embodiment, during heating, the heating pad 30 located in the storage position is released from its lock on the auxiliary heating unit 20, allowing it to rotate around the second axis B. The heating pad 30 is then folded open, so that the heating surface 31 faces upward. The heating pad 30 is rotated around the first axis A, so that it is positioned in front of the front opening 214 of the auxiliary heating unit 20, and the heating pad 30 is located in the heating position. The container 100 is placed on the heating surface 31, and the heating pad 30 and the heating element 22 are energized and heated by the control unit 40, while the fan 23 blows hot air onto the container 100. When heating is stopped, the heating pad 30 and the heating element 22 are shut off by the control unit 40, and the heating pad 30 is rotated around the first axis A, bringing it close to the storage slot 217 of the auxiliary heating unit 20. The heating pad 30 is folded around the second axis B to place it in the storage position and locked by the locking unit 50.

[0059] Example 3:

[0060] Please combine Figure 17 and Figure 18In this embodiment, the structure of the heater is basically the same as that of the heater in Embodiment 1, including a base 10, an auxiliary heating unit 20, a heating pad 30, a control unit 40, and a locking unit 50. The difference lies in that the base 10 is hollow, the auxiliary heating unit 20 is fixed above the base 10, and the heating pad 30 is movably connected to the inner bottom surface 111 of the base and can move in and out of the base 10 by translation, including linear sliding, on the inner bottom surface 111. The heating surface 31 faces away from the inner bottom surface 111 of the base. When the heating pad 30 is placed in the heating position, it slides outward from the base 10, and the heating surface 31 is located outside the base 10. When the heating pad 30 is placed in the storage position, it slides inward from the base 10, and the entire heating pad 30 is stored inside the base 10, with the auxiliary heating unit 20 covering the heating surface 31.

[0061] The auxiliary heating unit 20 includes an auxiliary housing 21, a heating element 22, a fan 23, a front mesh cover 24, and a rear mesh cover 25. The auxiliary housing 21 has a front opening 214 facing forward, and its detailed structure can be found in Embodiment 1.

[0062] The base 10 has a base opening 113 on its side, located below the front opening 214, with its opening direction parallel to that of the front opening 214. The base 10 has an inner wall surface 114 directly opposite the base opening 113. A guide groove 115 is formed on the inner bottom surface 111 of the base, extending from the base opening 113 towards the inner wall surface 114.

[0063] The heating pad 30 has a heating surface 31, which is located near the base opening 113 and faces the auxiliary heating unit 20. The heating surface 31 slides inside and outside the base 10. The side of the heating pad 30 facing away from the auxiliary heating unit 20 is the bottom surface 37 of the heating pad, which is opposite to the inner bottom surface 111 of the base and has a protruding guide block 38. The guide block 38 is located in and engages with the guide groove 115. When the heating pad 30 slides in the base 10, the guide block 38 slides in the guide groove 16. The guide block 38 has an extension 381 and an engaging portion 382. The extension 381 extends in a direction perpendicular to the bottom surface 37 of the heating pad and extends into the guide groove 115. The engaging portion 382 is connected to the end of the extension 381 away from the bottom surface 37 of the heating pad. Projected along a direction parallel to the inner bottom surface 111 of the base, the cross-sectional area of ​​the engaging portion 382 is larger than that of the extension portion 381. The shape of the guide groove 16 matches the shape of the guide block 38 and surrounds the extension portion 381 and the engaging portion 382, ​​thereby preventing the heating pad 30 from leaving the inner bottom surface 111 of the base during sliding. In this embodiment, projected along a direction parallel to the inner bottom surface 111 of the base, the cross-sectional shape of the guide groove 115 and the guide block 38 is an inverted T-shape. The locking unit 50 adopts the push-button locking structure in Embodiment 1, including the first locking member 51 and the second locking member 52. A locking channel 116 is provided on the inner wall surface 114 of the base. The first locking member 51 slides in the locking channel 116 along a direction parallel to the inner bottom surface 111 of the base. The elastic member 511 is connected between the inner wall surface 114 of the base and the first locking member 51. The second locking member 52 is fixed to the side of the heating pad 30 facing the inner wall 114 of the base. When the heating pad 30 is in the storage position, the first locking member 51 and the second locking member 52 are locked together; when the heating pad 30 is pressed, the first locking member 51 and the second locking member 52 are unlocked under the action of the elastic member 511, and the heating pad 30 slides outward from the base 10. Other detailed structures and working principles of the locking unit 50 can be found in Embodiment 1. In another embodiment, near the base opening 113, the heating pad 30 has a certain gap with the base 10, allowing the user to push and pull the heating pad 30 with their fingers without the need for a push-button locking structure.

[0064] Furthermore, the heating pad 30 has a safety protrusion 39 protruding towards the auxiliary heating unit 20 at one end near the base opening 113. The safety switch 41 is located inside the base 10 and near the base opening 113, and the safety switch 41 protrudes towards the inner bottom surface 111 of the base. When the heating pad 30 slides into the base 10, the safety protrusion 39 abuts against the safety switch 41 to press the safety switch 41.

[0065] In this embodiment, during heating, the heating pad 30 is pressed towards the inner wall surface 114 of the base, releasing the lock between the first locking member 51 and the second locking member 52. The heating pad 30 is then pulled, exposing the heating surface 31 to the outside of the base 10. The container 100 is placed on the heating surface 31, and the auxiliary heating unit 20 and the heating pad 30 are activated via the control unit 40 to heat the container 100. During storage, the auxiliary heating unit 20 and the heating pad 30 are deactivated via the control unit 40, and the heating pad 30 is pushed towards the inner wall surface 114 of the base, allowing it to enter the base 10. The first locking member 51 and the second locking member 52 then lock in place.

[0066] Compared with the prior art, the heating pad of the present invention has the following advantages:

[0067] 1. It can heat in two different directions at the same time, so that the container is heated evenly and the heating speed can be improved. Especially for containers with large capacity or height, the entire container can be heated at the same time to improve the uniformity of heating.

[0068] 2. The heating pad has good storage properties, so users are less likely to come into contact with the heating surface when heating is not needed, and it can automatically turn off the heating pad to save energy;

[0069] 3. The movement between the auxiliary heating unit and the heating pad is stable and reliable, and there are multiple relative movement modes to choose from;

[0070] 4. It can independently control the auxiliary heating unit and heating pad as needed to make reasonable use of heat.

[0071] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A heater, characterized in that: The device includes a base, an auxiliary heating unit, a heating pad, and a control unit. The auxiliary heating unit is located above the base and has opposing front and rear openings. The front and rear openings are covered with front and rear mesh covers, respectively, and airflow flows from the rear opening to the front opening. The heating pad is connected to the base and can move between a heating position and a storage position. When the heating pad is in the heating position, it is positioned in front of the auxiliary heating unit and close to the front opening, with its heating surface facing upwards. When the heating pad is in the storage position, its heating surface is covered by the auxiliary heating unit. The control unit is electrically connected to both the auxiliary heating unit and the heating pad. The auxiliary heating unit is rotatable relative to the base about a first axis; the heating pad is hinged to one side of the base and is rotatable about a second axis and folded onto the auxiliary heating unit; the first axis extends in the vertical direction; the second axis is perpendicular to the first axis; The auxiliary heating unit has a recessed storage groove on one side; when the heating pad is in the storage position, the heating pad is located in the storage groove. The auxiliary heating unit has a mounting ring protruding from one side facing the base, which is coaxial with the first axis. A sliding component is fitted over the mounting ring, and the mounting ring and the sliding component are inserted into the base.

2. The heater according to claim 1, characterized in that: It also includes a locking unit; the locking unit locks the heating pad in the storage position.

3. The heater according to claim 2, characterized in that: The locking unit includes a first locking member and a second locking member; the first locking member is disposed on one side of the auxiliary heating unit, and the second locking member is disposed on the heating pad; when the heating pad is in the storage position, the first locking member and the second locking member are engaged with each other.

4. The heater according to claim 1, characterized in that: The base is provided with a mounting hole, a mounting seat, and a shaft hole; the mounting hole is opened on one side facing the auxiliary heating unit; the mounting seat is fixed inside the base; the shaft hole is opened on the mounting seat; the axes of the mounting hole and the shaft hole coincide with the first axis; the auxiliary heating unit is provided with a mounting ring and a rotating shaft protruding on one side facing the base; the mounting ring surrounds the outside of the rotating shaft and is coaxial with it; the rotating shaft is inserted into the shaft hole, and the mounting ring is placed into the mounting hole and coaxially connected with it.

5. The heater according to claim 4, characterized in that: The mounting base has a guide groove that surrounds the outside of the shaft hole and extends circumferentially along the shaft hole. The auxiliary heating unit also has a guide hole on its side facing the base, and the axis of the guide hole is parallel to the first axis. The auxiliary heating unit includes a guide assembly. The guide assembly includes a guide post and a guide post seat. The guide post seat is placed in the base and inserted into the guide groove, allowing it to slide relative to the guide groove. One end of the guide post is inserted into the guide hole, and the other end is inserted into the guide post seat.

6. The heater according to claim 1, characterized in that: The control unit includes a safety switch; the safety switch protrudes from the bottom surface of the storage slot and can extend and retract inside and outside the storage slot.

Images