Heat generator

Abstract

To provide a highly efficient and energy-saving heater. [Solution] The device comprises a PTC heating element (10) and a conductor mounting shaft (20) that passes through the PTC heating element, the PTC heating element having an evacuation hole for evacuating the conductor mounting shaft, and a plurality of ventilation holes (102) in the side walls of the PTC heating element, a first conductive washer (30) and a second conductive washer (20) respectively provided on both side walls of the PTC heating element, the inner diameters of the first conductive washer and the second conductive washer being smaller than the diameter of the evacuation hole, positioning members are provided on both ends of the conductor mounting shaft for pressing the first conductive washer and the second conductive washer against the PTC heating element, and a first electrode terminal (50) and a second electrode terminal (60) are sequentially provided axially on one side of the PTC heating element, the first electrode terminal being pressed against the first conductive washer, and the second electrode terminal being pressed against the conductor mounting shaft via the positioning member.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electric heating elements, and more particularly to a highly efficient and energy-saving heater. [Background technology]

[0002] Hot air products used in everyday life, such as hair dryers, typically use iron-chrome wire or nickel-chrome wire wrapped around a mica support to heat the air being blown out. This layering process results in localized overlapping of heat during heating, resulting in significant heat concentration. Furthermore, the mica support is relatively large and requires a large assembly space, making it difficult to miniaturize the entire product. Furthermore, magnetic energy is generated during heating, reducing heat utilization efficiency. Furthermore, when power is applied, some parts can reach temperatures exceeding 1000°C. Because heat generation is uneven, an external temperature control circuit must be installed to protect against overheating, which indirectly increases costs.

[0003] Therefore, new designs of electric heating elements are required to overcome the drawbacks inherent in conventional products. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION The present invention aims to provide a highly efficient and energy-saving heater that can eliminate the drawbacks inherent in the prior art and satisfactorily solve the above problems. [Means for solving the problem]

[0005] In order to achieve the above objectives, the technical means adopted by this invention are as follows: a first conductive washer and a second conductive washer, each of which has an inner diameter smaller than the diameter of the evacuation hole; and a first electrode terminal and a second electrode terminal are provided at both ends of the conductor mounting shaft, respectively, in the axial direction on one side of the PTC heating element.

[0006] In the high-efficiency, energy-saving heater of the present invention, an insulating member is provided between the first electrode terminal and the second electrode terminal, and the insulating member is an annular member that is fitted onto the conductor mounting shaft. When the heater is fully assembled, the first electrode terminal and the second electrode terminal are located at both ends of the insulating member.

[0007] In the high-efficiency, energy-saving heater of the present invention, the inner diameter of the first conductive washer is larger than the inner diameter of the second conductive washer, and the end of the insulating member facing the PTC heating element is provided with an annular extension that passes through the internal cavity of the first conductive washer and extends into the evacuation hole, and the extension length of the annular extension into the evacuation hole is at least half the length of the evacuation hole.

[0008] In the high-efficiency, energy-saving heater of the present invention, one of the two positioning members is a bolt head integrally connected to the conductor mounting shaft and coaxially therewith, and the other is a conductor nut threadedly connected to the conductor mounting shaft and coaxially therewith, and when fully assembled, the conductor nut presses the second electrode terminal against the insulating member.

[0009] In the highly efficient and energy-saving heater of the present invention, the first electrode terminal and the second electrode terminal each comprise an annular body and an extending arm portion radially provided on the outer peripheral side wall of the annular body, the annular body of the first electrode terminal is coaxially fitted onto the outside of the annular extension portion, and the annular body of the second electrode terminal is coaxially fitted onto the outside of the conductor mounting shaft.

[0010] In the high-efficiency, energy-saving heater of the present invention, the outer diameter of the second electrode terminal is smaller than the outer diameter of the insulating member, and an annular abutment is coaxially provided on the outer wall of the end of the conductor nut close to the second electrode terminal, the outer diameter of the annular abutment is larger than the outer diameter of the annular body of the second electrode terminal, and when fully assembled, the annular abutment presses the annular body of the second electrode terminal against the insulating member.

[0011] In the highly efficient and energy-saving heater of the present invention, the end of the extending arm is provided with a bent portion parallel to the conductor mounting axis, and the bent portion faces away from the PTC heating element.

[0012] In the high-efficiency and energy-saving heater of the present invention, the extension arm has a thin-plate structure, and an extension is provided on each side of the bent portion in the width direction. [Effects of the Invention]

[0013] This device has a simple overall structure, generates heat uniformly, and has high thermal efficiency because there is no loss in the conversion of raw magnetic energy compared to conventional heating methods using resistance wires. By utilizing the heating characteristics of the PTC heating element itself, the purpose of constant temperature control can be achieved without the need for an external temperature control circuit, which can significantly reduce the manufacturing costs of the product. [Brief explanation of the drawings]

[0014] In order to clearly explain the embodiments of the present invention or the technical means in the prior art, the accompanying drawings that need to be used to depict the embodiments or the prior art will be briefly described below. The accompanying drawings depicted below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these accompanying drawings without any creative effort. [Figure 1] FIG. 1 is an overall configuration diagram of the present invention. [Figure 2] FIG. 2 is an exploded view of FIG. 1. [Figure 3] FIG. 3 is a view of FIG. 2 from a different perspective. [Figure 4] FIG. 2 is an axial cross-sectional view of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] In the specification, claims, and accompanying drawings of the present invention, terms such as "first," "second," "third," and "fourth" are used to distinguish between similar elements and not necessarily to describe a particular order. Furthermore, the terms "comprise," "have," or any other variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to only the listed steps or elements, and other steps or elements that are not expressly listed or that are inherent to such process, method, product, or apparatus may also be included.

[0016] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. Thus, phrases appearing in various places throughout this specification do not necessarily refer to the same embodiment, nor are they mutually exclusive, independent, or alternative embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein can be combined with other embodiments.

[0017] "Plurality" means two or more. The term "and / or" includes any and all combinations of one or more of the associated listed elements, for example, A and / or B means either A occurring alone, A and B occurring together, or B occurring alone. Also, as used herein, the symbol " / " generally denotes an "or" relationship between the associated elements before and after it, unless otherwise indicated.

[0018] In addition, terms indicating directions such as "upper," "lower," "left," "right," "top end," "bottom end," and "vertical direction" used in this invention are all based on the position in which the device or equipment related to this invention is positioned in its normal operating state.

[0019] In order to clarify the purpose, technical means and advantages of the present invention, the technical means in the embodiments of the present invention will be described below clearly and completely, but it goes without saying that the described embodiments are only some of the embodiments of the present invention and do not represent all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort fall within the scope of protection of the present invention.

[0020] As shown in FIGS. 1 to 4, a highly efficient, energy-saving heater according to a preferred embodiment of the present invention includes a disk-shaped PTC heating element 10 and a conductor mounting shaft 20 that penetrates the PTC heating element 10. The PTC heating element 10 is not limited to a disk shape and may be rectangular, pentagonal, or other polygonal or irregular, with the specific shape being appropriately selected depending on the actual installation situation. The conductor mounting shaft 20 is a threaded shaft. The PTC heating element 10 is provided with a retraction hole 101 for retracting the conductor mounting shaft 20. A plurality of evenly spaced ventilation holes 102 are provided in the sidewall of the PTC heating element 10 between its edge and the retraction hole 101. When the PTC heating element 10 is installed inside a product with an air passage, the air in the air passage is evenly distributed to each ventilation hole 102, allowing each hole to be heated independently.

[0021] Furthermore, a first conductive washer 30 and a second conductive washer 40 are provided on both side walls of the PTC heating element 10, with the first conductive washer 30 having a square outer shape and the second conductive washer 40 having a circular outer shape. The inner holes of the first conductive washer 30 and the second conductive washer 40 are both circular, with their inner diameters smaller than the diameter of the retraction hole 101. Positioning members are provided on both ends of the conductor mounting shaft 20, respectively, for pressing the first conductive washer 30 and the second conductive washer 40 against the PTC heating element 10, thereby ensuring that the first conductive washer 30 and the second conductive washer 40 are tightly connected to the two terminal pins of the PTC heating element 10.

[0022] In addition, a first electrode terminal 50 and a second electrode terminal 60 are sequentially provided in the axial direction on one side of the PTC heating element 10, and the first electrode terminal 50 is pressed against the first conductive washer 30, and the second electrode terminal 60 is pressed against the conductor mounting shaft 20 via an adjacent positioning member (pressed against the threads of the conductor mounting shaft 20 via the conductor nut 90), so that the conductor mounting shaft 20 and the second conductive washer 40 form a conductive path connecting the second electrode terminal 60 and the pin of the PTC heating element 10.

[0023] The heater provided by this embodiment has a simple overall structure and generates heat uniformly. Compared to conventional heating methods using resistance wires, there is no loss in magnetic energy conversion, resulting in higher thermal efficiency. Furthermore, by utilizing the heating characteristics of the PTC heating element 10 itself based on its Curie point (i.e., the characteristic whereby the resistance value increases significantly when the PTC temperature reaches a certain threshold), the amount of current flow is limited, preventing further temperature increases. This enables self-constant temperature control without the need for an external temperature control circuit, significantly reducing product manufacturing costs.

[0024] In this embodiment, an insulating member 70 is provided between the first electrode terminal 50 and the second electrode terminal 60. Half of the insulating member 70 is made of insulating ceramics, although other heat-resistant materials such as quartz or asbestos products can also be used. The insulating member 70 is an annular member that is fitted onto the conductor mounting shaft 20. When fully assembled, the first electrode terminal 50 and the second electrode terminal 60 are located at both ends of the insulating member 70, and the insulating member 70 can prevent short circuits due to contact between the first electrode terminal 50 and the second electrode terminal 60.

[0025] In this embodiment, the inner diameter of the first conductive washer 30 is larger than the inner diameter of the second conductive washer 40, and an annular extension 701 is provided at the end of the insulating member 70 facing the PTC heating element 10, passing through the internal cavity of the first conductive washer 30 and extending into the evacuation hole 101. The annular extension 701 is cylindrical, and the extension length of the annular extension 701 into the evacuation hole 101 exceeds at least half the length of the evacuation hole 101. In practice, this half extends to two-thirds of the evacuation hole 101, which prevents the conductor mounting shaft 20 from coming into direct contact with the inner wall of the evacuation hole 101 when it is tilted, thereby providing protection and position correction effects.

[0026] In this embodiment, one of the two positioning members is a bolt head 80 that is integrally and coaxially connected to the conductor mounting shaft 20, and the other is a conductor nut 90 that is threadedly connected to the conductor mounting shaft 20. In a fully assembled state, the conductor nut 90 presses the second electrode terminal 60 against the insulating member 70, thereby pressing the insulating member 70, the first electrode terminal 50, and the first conductive washer 30 against the PTC heating element 10, thereby ensuring the stability of the entire structure after installation.

[0027] In this embodiment, the first electrode terminal 50 and the second electrode terminal 60 each include an annular body a1 and an extending arm portion a2 provided radially on the outer peripheral side wall of the annular body a1. When fully assembled, the extending arm portions a2 are located on either side of the conductor mounting shaft 20, the annular body a1 of the first electrode terminal 50 is coaxially fitted onto the outside of the annular extension portion 701, and the annular body a1 of the second electrode terminal 60 is coaxially fitted onto the outside of the conductor mounting shaft 20 and is pressed against the insulating member 70 via the conductor nut 90.

[0028] In this embodiment, the outer diameter of the second electrode terminal 60 is smaller than the outer diameter of the insulating member 70, and an annular abutment portion 901 is coaxially provided on the outer wall of the end of the conductor nut 90 closest to the second electrode terminal 60. The outer diameter of the annular abutment portion 901 is larger than the outer diameter of the annular body a1 of the second electrode terminal 60, and the end face of the annular abutment portion 901 facing the PTC heating element is flush with the adjacent end face of the conductor nut. In a fully assembled state, the annular abutment portion 901 presses the annular body a1 of the second electrode terminal 60 against the insulating member 70, and the dual fixing action of the annular body a1 and the conductor nut 90 ensures close contact between the first electrode terminal 50 and the second electrode terminal 60 and stability after installation.

[0029] In this embodiment, the end of the extending arm a2 is provided with a bent portion a21 that is parallel to the conductor mounting shaft 20 and faces away from the PTC heating element 10. Specifically, the extending arm a2 has a thin plate-like structure, and extending portions a22 are provided on both sides of the bent portion a21 in the width direction. In other words, the width of the bent portion a21 is larger than the width of the end of the extending arm a2 that is closer to the annular body a1, thereby ensuring a larger area when connecting to an external conductor and enabling stable soldering work.

[0030] Those skilled in the art will be able to make improvements and modifications based on the above description, and it should be understood that such improvements and modifications are within the technical scope described in the claims for utility model registration attached to this invention.

Claims

1. a heater comprising: a plate-shaped PTC heating element; and a conductor mounting shaft penetrating the PTC heating element, wherein the PTC heating element is provided with an evacuation hole for retracting the conductor mounting shaft; a side wall of the PTC heating element is provided with a plurality of ventilation holes between an edge of the PTC heating element and the evacuation hole; a first conductive washer and a second conductive washer are provided on both side walls of the PTC heating element, respectively, and inner diameters of the first conductive washer and the second conductive washer are both smaller than the diameter of the evacuation hole; positioning members are provided on both ends of the conductor mounting shaft for pressing the first conductive washer and the second conductive washer to the PTC heating element, respectively; and a first electrode terminal and a second electrode terminal are provided in this order axially on one side of the PTC heating element, the first electrode terminal being pressed against the first conductive washer, and the second electrode terminal being pressed against the conductor mounting shaft via the positioning member.

2. 2. The heater according to claim 1, wherein an insulating member is provided between the first electrode terminal and the second electrode terminal, the insulating member being an annular member that is fitted onto the conductor mounting shaft, and in a fully assembled state, the first electrode terminal and the second electrode terminal are located at opposite ends of the insulating member, respectively.

3. 3. The heater according to claim 2, wherein the inner diameter of the first conductive washer is larger than the inner diameter of the second conductive washer, the end of the insulating member facing the PTC heating element is provided with an annular extension that passes through the internal cavity of the first conductive washer and extends into the evacuation hole, and the extension length of the annular extension into the evacuation hole exceeds at least half the length of the evacuation hole.

4. 4. The heater according to claim 2, wherein one of the two positioning members is a bolt head integrally connected to and coaxial with the conductor mounting shaft, and the other is a conductor nut threadedly connected to and coaxial with the conductor mounting shaft, and wherein, in a fully assembled state, the conductor nut presses the second electrode terminal against the insulating member.

5. 5. The heater according to claim 4, wherein the first electrode terminal and the second electrode terminal each comprise an annular body and an extending arm portion provided radially on an outer peripheral side wall of the annular body, an annular extension portion is provided at an end of the insulating member facing the PTC heating element and extends through the internal cavity of the first conductive washer into the retraction hole, the annular body of the first electrode terminal is coaxially fitted onto the outside of the annular extension portion, and the annular body of the second electrode terminal is coaxially fitted onto the outside of the conductor mounting shaft.

6. 6. The heater according to claim 5, wherein an outer diameter of the second electrode terminal is smaller than an outer diameter of the insulating member, an annular abutment is coaxially provided on an outer wall of an end of the conductor nut that is close to the second electrode terminal, the outer diameter of the annular abutment is larger than an outer diameter of the annular body of the second electrode terminal, and the annular abutment presses the annular body of the second electrode terminal against the insulating member in a fully assembled state.

7. 6. The heater according to claim 5, wherein the end of the extending arm is provided with a bent portion parallel to the conductor mounting axis, the bent portion facing away from the PTC heating element.

8. The heater according to claim 7, wherein the extending arm portion has a thin plate-like structure, and an extending portion is provided on each of both sides of the bent portion in the width direction.

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