Waterproof and breathable PTC electric heater
By incorporating components such as screw rings, auxiliary torsion frames, and waterproof and breathable membranes into the PTC electric heater, the problem of dry burning caused by prolonged sealing is solved, achieving waterproof and breathable effects and improving the safety and ease of maintenance of the equipment.
Patent Information
- Application Number
- CN202422825134.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-20
AI Technical Summary
When existing PTC electric heaters are used for a long time, the heating element inside the aluminum tube is prone to dry burning due to the sealed environment, which can lead to damage. This is especially true when used in the air boxes of equipment such as air conditioners and hot air curtains, where the lack of air permeability causes severe sealing problems.
A waterproof and breathable PTC electric heater was designed. The sealing component consists of a screw ring, an auxiliary torsion frame, and a waterproof and breathable membrane to ensure the sealing of the wires. At the same time, it allows air to pass between the base and the end of the aluminum tube to prevent moisture from entering. The limiting groove and the limiting plate facilitate quick disassembly.
It improves waterproofing, avoids tube bursting caused by prolonged dry burning, and enhances maintenance convenience, ensuring the safety and reliability of the equipment.
Smart Images
Figure CN223472363U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to PTC electric heater technical field especially relates to a waterproof and ventilative PTC electric heater. BACKGROUND
[0002] PTC heating body is also called PTC heater, adopts PTC ceramic heating element and aluminum pipe composition. This type PTC heating body has the advantages of small thermal resistance, high heat exchange efficiency, is a kind of automatic constant temperature, power-saving electric heater. PTC electric heater is mainly applied to air conditioner, hot air curtain machine, dehumidifier, drying machine, clothes dryer, fan heater, automobile and other equipment needing to provide warm air, sometimes in the use, in dehumidification, dew condensation, mold removal and other water working environment, at this moment, it requires that PTC electric heater has good waterproof performance, guarantees the use safety.
[0003] The existing PTC electric heater is generally sealed with glue at the two ends of the aluminum pipe, the heating core is sealed, the wire connected with the electrode sheet in the heating core is led out of the aluminum pipe, and good waterproof effect is achieved between the aluminum pipe and the heating core.
[0004] However, the PTC electric heater is installed in the air bellow of the air conditioner, hot air curtain machine and other equipment, the air bellow is in the closed state, once the PTC electric heater works for a long time, the heating element in the aluminum pipe is closed for a long time, so that dry burning and pipe explosion phenomenon is easy to occur, which causes the damage of the PTC electric heater, in view of this, we provide a waterproof and ventilative PTC electric heater. UTILITY MODEL CONTENTS
[0005] The utility model aims at overcoming the insufficient of prior art, adapting to the actual need, provide a kind of waterproof and ventilative PTC electric heater, to solve the technical problems that the existing PTC electric heater is installed in the air bellow of the air conditioner, hot air curtain machine and other equipment, the air bellow is in the closed state, once the PTC electric heater works for a long time, the heating element in the aluminum pipe is closed for a long time, so that dry burning and pipe explosion phenomenon is easy to occur, which causes the damage of the PTC electric heater.
[0006] In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is as follows: a waterproof and ventilative PTC electric heater is designed, including base, the base is internally provided with electric heating assembly, the inner side of one end of the base is provided with a group of sealing elements, the sealing element is internally penetrated by wire;
[0007] The sealing element includes a screw ring, a group of screw rings are screwed to the inner side of one end of the base, the outer part of the screw ring is fixedly connected with auxiliary torsion frame, the inner part of the screw ring is fixedly connected with positioning frame, waterproof and ventilative film is arranged between the positioning frame and the screw ring, the inner part of the positioning frame is clamped with auxiliary ring frame, and the inner wall of the auxiliary ring frame is matched and bonded with sealing rubber pad.
[0008] Preferably, the screw ring is integrally formed with the auxiliary torsion bracket, and the inside of one end of the base is provided with a screw groove matched with the screw ring.
[0009] Preferably, the inner and outer walls of the waterproof and breathable film are fixedly attached to the outer wall of the annular part of the positioning frame and the inner wall of the screw ring respectively.
[0010] Preferably, the auxiliary ring frame is embedded in the inside of the inner wall of the positioning frame, and the auxiliary ring frame can rotate freely inside the positioning frame.
[0011] Preferably, the base comprises a left support, the inside of the end of the left support is provided with a limiting groove, the limiting groove is clamped with a limiting plate inside, the right end of the limiting plate is fixedly connected with a right support, and a plurality of screws are penetrated through the inside of the limiting plate.
[0012] Preferably, the right support and the limiting groove form a clamping structure through the limiting plate, and the left support and the limiting plate form a detachable structure through the screws.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1. The utility model discloses a screw ring and an auxiliary torsion bracket are used to install the sealing element in the screw groove in the inside of one end of the base, the wire is passed through the inside of the sealing rubber pad, the sealing rubber pad can guarantee the sealing property between the auxiliary ring frame and the wire, the auxiliary ring frame is convenient for the rotation of the positioning frame and the screw ring and does not make the wire twist unlimitedly, the waterproof and breathable film is arranged to be convenient for the ventilation of the cavity between the base and the aluminum pipe end and can avoid the moisture from the outside into the cavity, improve the protection property, avoid the phenomenon that the internal element of the PTC electric heater is closed for a long time by adopting the glue sealing mode and explodes the pipe after long time dry burning.
[0015] 2. The cooperation between the limiting groove and the limiting plate in the utility model is convenient for the quick assembly between the left support and the right support, and the left support and the right support can be separated quickly through the dismounting screw, so that the electric heating assembly can be removed quickly, and the convenience of the maintenance of the electric heating assembly is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Fig. 1 It is the overall structure schematic diagram of the utility model;
[0017] Fig. 2 It is the base disassembly structure schematic diagram of the utility model;
[0018] Fig. 3 It is the sealing element local section structure schematic diagram of the utility model;
[0019] Fig. 4 It is the sealing element local section structure schematic diagram of the utility model from another perspective;
[0020] In the figure: 1, base; 2, electric heating assembly; 3, sealing element; 4, wire;
[0021] 101, left support; 102, limiting groove; 103, limiting plate; 104, right support; 105, screw;
[0022] 301, screw ring; 302, auxiliary torsion frame; 303, positioning frame; 304, waterproof and breathable membrane; 305, auxiliary ring frame; 306, sealing rubber pad. DETAILED DESCRIPTION
[0023] The utility model is further illustrated below in combination with the drawings and embodiments:
[0024] A waterproof and breathable PTC electric heater, referring to Figs. 1 to 4 , comprising a base 1, the base 1 is internally provided with an electric heating assembly 2, one end of the base 1 is internally provided with a group of sealing elements 3, the sealing elements 3 are internally penetrated by wires 4;
[0025] The sealing elements 3 comprise screw rings 301, a group of screw rings 301 are screwed to one end of the base 1, the screw rings 301 are externally fixedly connected with auxiliary torsion frames 302, wherein the screw rings 301 and the auxiliary torsion frames 302 are integrally formed, one end of the base 1 is internally provided with screw grooves matched with the screw rings 301, the screw rings 301 are internally fixedly connected with positioning frames 303, the positioning frames 303 and the screw rings 301 are provided with waterproof and breathable membranes 304, further, the inner and outer walls of the waterproof and breathable membranes 304 are respectively fixedly attached to the outer wall of the annular part of the positioning frames 303 and the inner wall of the screw rings 301, the positioning frames 303 are internally clamped with auxiliary ring frames 305, further, the auxiliary ring frames 305 are embedded in the inner wall of the positioning frames 303, the auxiliary ring frames 305 can freely rotate in the positioning frames 303, the inner wall of the auxiliary ring frames 305 is matched with and bonded with sealing rubber pads 306. The utility model effectively installs the sealing elements 3 in the screw grooves of one end of the base 1 through the screw rings 301 and the auxiliary torsion frames 302, and the wires 4 are penetrated through the sealing rubber pads 306, the sealing rubber pads 306 can ensure the sealing property between the auxiliary ring frames 305 and the wires 4, the auxiliary ring frames 305 can facilitate the rotation of the positioning frames 303 and the screw rings 301 without causing the wires 4 to be infinitely twisted, the waterproof and breathable membranes 304 can facilitate the ventilation of the cavity between the base 1 and the end of the aluminum pipe while avoiding the entry of external moisture into the cavity, improve the protection property, avoid the use of the glue sealing mode to cause the internal elements of the PTC electric heater to be closed for a long time, and prevent the phenomenon of pipe explosion after long-time dry burning.
[0026] Notable is that the base 1 includes the left support 101, the limit slot 102 is formed in the inner side of the end of the left support 101, the limit plate 103 is clamped in the limit slot 102, the right support 104 is fixedly connected to the right end of the limit plate 103, and a plurality of screws 105 are penetrated through the limit plate 103, wherein the right support 104 forms a clamping structure with the limit slot 102 through the limit plate 103, and the left support 101 forms a detachable structure with the limit plate 103 through the screws 105.The cooperation between the limit slot 102 and the limit plate 103 in the utility model facilitates the quick assembly between the left support 101 and the right support 104, and the left support 101 and the right support 104 can be quickly separated through the disassembly of the screws 105, so that the electric heating assembly 2 can be quickly removed, and the convenience of the maintenance of the electric heating assembly 2 is improved.
[0027] Working principle: the sealing element 3 is integrally installed in the screw groove in the inner side of one end of the base 1 through the screw ring 301 and the auxiliary torsion frame 302, meanwhile, the wire 4 is penetrated through the inside of the sealing rubber gasket 306, the sealing rubber gasket 306 can guarantee the sealing property between the auxiliary ring frame 305 and the wire 4, the auxiliary ring frame 305 does not affect the rotation of the positioning frame 303 and the screw ring 301, and meanwhile, the wire 4 is not twisted unlimitedly, the waterproof and breathable film 304 is arranged, the cavity between the base 1 and the aluminum pipe end can be ventilated, meanwhile, the cavity can be prevented from being entered by external moisture, the protection property is improved, the internal elements of the PTC electric heater are prevented from being closed for a long time by adopting the glue sealing mode, the phenomenon that the pipe is exploded after long-time dry burning is avoided, the left support 101 and the right support 104 can be separated through the disassembly of the screws 105, so that the electric heating assembly 2 can be quickly removed, and the convenience of the maintenance of the electric heating assembly 2 is improved.
[0028] The embodiments of the utility model publish better embodiments, but are not limited to this, the ordinary skilled in the art, the spirit of the utility model is easily understood according to the above-mentioned embodiments, and different inferences and changes are made, but as long as not departing from the spirit of the utility model, are within the protection scope of the utility model.
Claims
1. A waterproof and breathable PTC electric heater, characterized in that, Including base (1), the inside of base (1) is equipped with electric heating assembly (2), one end of base (1) is equipped with a group of sealing elements (3) inside, the inside of sealing element (3) is penetrated by wire (4); The sealing element (3) includes a screw ring (301), a group of screw rings (301) are screwed to one end of the inner side of the base (1), the outer side of the screw ring (301) is fixedly connected with an auxiliary torsion frame (302), the inner side of the screw ring (301) is fixedly connected with a positioning frame (303), a waterproof and breathable film (304) is arranged between the positioning frame (303) and the screw ring (301), the inner side of the positioning frame (303) is clamped with an auxiliary ring frame (305), the inner wall of the auxiliary ring frame (305) is matched and bonded with a sealing rubber pad (306).
2. A waterproof and breathable PTC electric heater according to claim 1, characterized in that, The screw ring (301) and the auxiliary torsion frame (302) are integrally formed, and the one end of the inner side of the base (1) is provided with a screw groove matched with the screw ring (301).
3. A waterproof and breathable PTC electric heater according to claim 1, wherein The inner and outer walls of the waterproof and breathable film (304) are fixedly attached to the outer wall of the annular portion of the positioning frame (303) and the inner wall of the screw ring (301), respectively.
4. A waterproof and breathable PTC electric heater according to claim 1, wherein The auxiliary ring frame (305) is embedded in the inner wall of the positioning frame (303), and the auxiliary ring frame (305) can rotate freely in the positioning frame (303).
5. A waterproof and breathable PTC electric heater according to claim 1, wherein The base (1) includes a left support (101), the end of the left support (101) is provided with a limiting groove (102) inside, the limiting groove (102) is clamped with a limiting plate (103) inside, the right end of the limiting plate (103) is fixedly connected with a right support (104), and a plurality of screws (105) are penetrated through the inside of the limiting plate (103).
6. A waterproof and breathable PTC electric heater according to claim 5, wherein The right support (104) and the limiting groove (102) constitute a clamping structure through the limiting plate (103), and the left support (101) and the limiting plate (103) constitute a detachable structure through the screw (105).