PTC heater with heat pipe
By introducing heat pipes and optimizing the heat sink design in the PTC heater, the problem of current surge during PTC heater startup was solved, achieving efficient heat transfer and circuit protection, and improving product performance.
Patent Information
- Application Number
- CN202423244584.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-27
AI Technical Summary
PTC heaters generate a large inrush current when powered on, which may damage internal circuit components and reduce power output capability. Frequent current surges also affect their performance.
The design employs heat pipes and aluminum heat sinks with high thermal conductivity. The heat pipes transfer heat from the PTC thermistor, and the optimized heat sink structure increases the contact area and uses thermally conductive adhesive to reduce current surges.
It effectively reduces the current surge during PTC heater startup, protects internal circuit components, and improves heat transfer efficiency and product performance.
Smart Images
Figure CN223899342U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to physical field, especially a kind of PTC heater with heat pipe, and specifically a kind of PTC heater with heat pipe BACKGROUND
[0002] The utility model relates to a kind of PTC heater with heat pipe.
[0003] PTC heater is widely used in various projects needing heating due to constant temperature self-regulation and dry burning resistance.
[0004] The heat source of PTC heater is PTC thermistor, one of its characteristics is that it will generate a large impact current at the moment of power-on, which is due to its small initial resistance, resulting in rapid increase of current, sometimes even several times the steady-state current, which can cause internal circuit components to be damaged or deformed, thereby reducing its power output capability, in addition, if current impact occurs frequently during use, it will also cause damage to PTC heater and affect its performance, so it is necessary to seek a technical solution that can reduce the impact current of PTC heater. SUMMARY
[0005] To solve the above problems, the utility model provides a kind of PTC heater with heat pipe, and is committed to improving product performance. The utility model provides the following technical scheme:
[0006] A kind of PTC heater with heat pipe, comprising: heat sink, heat sink is inserted in heat pipe, one end of heat pipe is inserted into a base, PTC heating core is set near heat pipe by base, PTC heating core is powered to heat, and heat pipe is provided with heat source.
[0007] Further, the above-mentioned heat sink is composed of a plurality of heat dissipation fins, the heat dissipation fin is provided with a punched hole, the punched hole is provided with a protrusion around the punched hole, and the height of the protrusion is equal to the spacing between each heat dissipation fin.
[0008] Further, the material of the above-mentioned heat dissipation fin is preferably aluminum with a large thermal conductivity coefficient, and the thickness of the heat dissipation fin can be designed to be 0.5-2mm.
[0009] Further, one side of the above-mentioned base is provided with a heat pipe mounting hole, after the heat pipe is inserted through the heat dissipation fin, one end of the heat pipe is inserted into the mounting hole, and heat-conducting glue is pre-injected into the mounting hole.
[0010] Further, the base heat pipe mounting hole is provided with a groove for accommodating the PTC heating core, and the number of grooves can be set to multiple according to actual needs.
[0011] Further, the mounting hole of the heater is provided on the side surface of the above-mentioned base.
[0012] Furthermore, aluminum, which has a high conductivity, is the preferred material for the aforementioned base.
[0013] Compared with the prior art, the beneficial effects of this utility model are: it adopts a high-efficiency heat conductor, namely a heat pipe, to transfer the heat of the PTC thermistor. It has high thermal conductivity and also solves the problem of the excessive inrush current generated when the traditional PTC heater starts working, which affects the internal components of the circuit. Attached Figure Description
[0014] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 Schematic diagram of a PTC heater with a heat pipe
[0016] Figure 2 A schematic diagram of the explosion of a PTC heater with a heat pipe.
[0017] Figure 3 Schematic diagram of a PTC heater base with heat pipes
[0018] Figure 4 A schematic diagram of a PTC heater heat sink with a heat pipe.
[0019] 1—Heat sink; 11—Heat fin; 11A—Perforation; 11B—Protrusion; 2—Heat pipe; 3—Base; 31—Heat pipe mounting hole; 32—Groove; 33—Mounting hole; 4—PTC heating element; Detailed Implementation
[0020] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0021] It should be understood that the terms "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] The design will be further explained below with reference to the accompanying drawings in the structural specification.
[0023] likeFigures 1-2 A PTC heater with a heat pipe includes: a heat sink (1) inserted into a heat pipe (2), one end of the heat pipe (2) inserted into a base (3), and a PTC heating core (4) disposed near the heat pipe in the base (3). The PTC heating core (4) is energized and heated to provide a heat source for the heat pipe (2).
[0024] The heating principle of the PTC heating core (4) is existing technology and will not be elaborated here.
[0025] like Figure 1 The heat transfer principle of this scheme is as follows: The PTC heating element is energized and heats up, transferring heat to one end of a nearby heat pipe. When this end of the heat pipe is heated, the liquid in the capillary tubes inside the heat pipe evaporates rapidly. The vapor flows to the other end under a small pressure difference, releasing heat and re-condensing into liquid. The liquid then flows back to the evaporation section along the porous material due to capillary force, and this cycle continues. Heat is transferred rapidly from one end of the heat pipe to the other, ensuring a continuous flow of heat from the PTC, resulting in very high thermal efficiency.
[0026] like Figure 2 , 4 The heat sink (1) is composed of multiple heat sinks (11). The heat sinks (11) are provided with perforations (11A). The perforations (11A) are surrounded by protrusions (11B). The height of the protrusions (11B) is equal to the distance between each heat sink (11). The protrusions (11B) increase the contact area between the heat pipe and the heat sink, thereby improving the heat dissipation efficiency. At the same time, the holes formed by the protrusions (11B) are interference-fitted with the heat pipe (2), making it difficult for the heat sinks (11) to fall out of the heat pipe (2).
[0027] like Figure 4 The heat sink (11) is preferably made of aluminum, which has a high thermal conductivity. To increase the heat dissipation area and achieve a lightweight design, the thickness of the heat sink can be designed to be 0.5 to 2 mm.
[0028] like Figure 3 The base (3) is provided with a heat pipe mounting hole (31) on one side. After the heat sink (11) is passed through the heat pipe (2), one end is inserted into the mounting hole (31). Thermal conductive adhesive is pre-injected into the mounting hole (31).
[0029] like Figure 3 The above-mentioned base heat pipe mounting hole (31) is provided with a groove (32) for accommodating the PTC heating core. The number of grooves (32) can be set multiple times according to actual needs for the PTC heating core (4).
[0030] like Figure 3 The base (3) is provided with a heater mounting hole (33) on its side to facilitate product installation.
[0031] The material of the base (3) mentioned above is preferably aluminum with a high conductivity.
[0032] The embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the embodiments, their practical application, or improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A PTC heater with a heat pipe, characterized in that: include: Heat sink (1) is inserted into heat pipe (2). One end of heat pipe (2) is inserted into a base (3). A PTC heating core (4) is set near the heat pipe (2) in the base (3). The PTC heating core (4) is powered on and heated to provide heat source to heat pipe (2).
2. A PTC heater with a heat pipe according to claim 1, characterized in that: The heat sink (1) is composed of multiple heat sinks (11). The heat sinks (11) are provided with punches (11A). The punches (11A) are surrounded by protrusions (11B). The height of the protrusions (11B) is equal to the distance between each heat sink. The hole formed by the protrusions (11B) is interference-fitted with the heat pipe (2).
3. A PTC heater with a heat pipe according to claim 2, characterized in that: The heat sink (11) is made of aluminum with a high thermal conductivity, and the thickness of the heat sink is designed to be 0.5-2mm.
4. A PTC heater with a heat pipe according to claim 3, characterized in that: The base (3) has a heat pipe mounting hole (31) on one side. After the heat sink (11) is passed through the heat pipe (2), one end is inserted into the heat pipe mounting hole (31). Thermal conductive adhesive is pre-injected into the heat pipe mounting hole (31).
5. A PTC heater with a heat pipe according to claim 4, characterized in that: The base heat pipe mounting hole (31) is provided with a groove (32) for accommodating the PTC heating core (4). The number of grooves (32) can be set according to the actual needs of the PTC heating core (4).
6. A PTC heater with a heat pipe according to claim 5, characterized in that: The base (3) has mounting holes (33) for heaters on its side.
7. A PTC heater with a heat pipe according to any one of claims 1 to 6, characterized in that: The base (3) is made of aluminum with a high conductivity.