Novel PTC heater
By adopting the design of closed-end welding, serpentine flow channel and Teflon coating in the PTC heater, the problems of liquid leakage and penetration are solved, the sealing and service life of the PTC heater are improved, and the safety and heat transfer efficiency are ensured.
Patent Information
- Application Number
- CN202422987967.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Existing PTC heaters are prone to liquid leakage or penetration during the liquid heating process, causing heating core failure and safety hazards, affecting the safety of product use.
A new type of PTC heater was designed, which used a closed-end PTC heating core shell that was welded to the cover and injected with sealing thermal conductive glue. It was combined with a serpentine flow channel and a fixed seat structure to ensure sealing, and Teflon was coated on the surface of the heating core shell to prevent corrosion and scaling.
It effectively prevents liquid leakage and penetration, improves the sealing and service life of the product, prevents corrosion and scaling, ensures heat transfer efficiency, and improves the safety and reliability of the product.
Smart Images
Figure CN223460597U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to physical field especially, relates to heating device, a novel liquid or can heat liquid to produce PTC heater of gasification BACKGROUND
[0002] The present application relates to a novel PTC heater. PTC heater is widely used in various projects requiring heating due to its constant temperature self-regulation and dry burning resistance.
[0003] In addition to being used for air heating, PTC heaters can also be used for liquid heating, and even for vaporizing liquid. Currently, in order to efficiently transfer heat, PTC heating cores are often directly placed in liquid, but during use, liquid may leak or penetrate into the PTC heating core, causing the PTC heating core to fail, and even causing the liquid to become electrically charged, which seriously affects the safety of the product. SUMMARY
[0004] To solve the above problems, the utility model provides a novel PTC heater, and is committed to improving product performance. The utility model provides the following technical scheme:
[0005] A novel PTC heater includes a housing, the housing is provided with an opening at one end, and a cover plate is provided at the opening end. The housing and the cover plate are connected by a sealing ring and form a chamber. A flow passage baffle is provided in the chamber. The other end of the housing is provided with an inlet and an outlet. Each flow passage contains a PTC heating core shell. The PTC heating core shell passes through the cover plate through hole. The opening end is fixedly connected with the cover plate as a whole, and the other end is a closed end. The PTC heating core shell is immersed in liquid. A PTC heating core is arranged in each PTC heating core shell. The PTC heating core heats the liquid after being powered on.
[0006] Further, the closed end of the PTC heating core shell is provided with a plug. The plug, the PTC heating core shell, and the cover plate are made of the same metal. The end of the PTC heating core shell immersed in the liquid is welded with the plug as a whole to form a closed end. The other opening end passes through the cover plate through hole and is welded with the cover plate as a whole. A sealing gasket is arranged at the welded closed end. Before the PTC heating core is inserted into the PTC heating core shell, sealing and heat-conducting glue is injected into the PTC heating core shell.
[0007] Further, the number of liquid flow passages is equal to the number of heating cores. At least two baffles A are arranged on the inner wall of the housing near the inlet and outlet ends. At least one baffle B is arranged on the side of the cover plate facing the chamber, so that the liquid flow passage presents a serpentine flow passage, and the liquid and the PTC heating core shell can be fully contacted.
[0008] Further, the inner wall of the shell is provided with the same number of fixing seats as the PTC heating core shell near the inlet and outlet ends to fix the closed end of the PTC heating core shell, so as to prevent the PTC heating core shell from floating in the liquid.
[0009] Further, a box body is arranged on the outer plane of the shell near the outlet to accommodate the temperature controller and the fuse or one of the temperature protectors, and the temperature protector is used in series with the PTC heating core.
[0010] Further, an NTC temperature controller is arranged near the outlet flow channel.
[0011] Further, the outgoing ends of the PTC heating core are connected to the PCB circuit board together, and the PCB is provided with a cover shell which is buckled with the shell.
[0012] Further, the surface of the PTC heating core shell is coated with Teflon.
[0013] Further, the baffle A is integrally injection molded with the shell, and the baffle B is made of the same metal material as the cover plate and is integrally welded.
[0014] Further, the shell is injection molded with high-temperature-resistant material.
[0015] Compared with the prior art, the utility model has the advantages that: 1, the closed end of the PTC heating core shell in the liquid is welded with a blocking piece, so that the sealing is reliable, liquid leakage or penetration into the PTC heating core is effectively prevented, and product leakage is caused. 2, the surface of the PTC heating core shell is coated with Teflon, so that the corrosion of the shell is effectively prevented, and due to the extremely low surface tension of the Teflon coating, the extremely strong non-stick property is exhibited, liquid fouling loss of heat transfer is prevented, and the service life of the product is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the following described drawings are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.
[0017] Figure 1 is the finished product schematic diagram of the embodiment 1 of the utility model
[0018] Figure 2 is the explosion schematic diagram of the embodiment 1 of the utility model
[0019] Figure 3 is the chamber liquid flow channel schematic diagram of the utility model
[0020] Figure 4PTC heating core sealing structure schematic diagram of the utility model
[0021] Figure 5 housing schematic diagram of the utility model
[0022] Figure 6 explosion schematic diagram of the utility model embodiment 2
[0023] 1 - shell;101 - import;102 - export;103 - box body;104 - fixed seat;2 - cover plate;201 - cover plate through hole;3 - sealing ring;401 - baffle A;402 - baffle B;5 - PTC heating core shell;6 - PTC heating core;7 - plug;8 - temperature protector;801 - temperature controller;802 - fuse;9 - NTC temperature controller, 10 - PCB circuit board;11 - cover; DETAILED DESCRIPTION
[0024] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in different drawings represent the same or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
[0025] Wherein, it needs to be understood that the terms "inner", "outer", "upper", "lower", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model or simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0026] The design will be further described below in combination with the structural description of the drawings.
[0027] Embodiment 1
[0028] As Figures 1-2 A novel PTC heater, comprising a housing (1), the housing (1) is provided with an opening at one end, an opening end is provided with a cover plate (2), the housing (1) and the cover plate (2) are connected through a sealing ring (3) and form a cavity, the cavity is provided with a flow passage baffle (4), the housing (1) is provided with an import (101) and an export (102) at the other end, each flow passage contains a PTC heating core shell (5), the PTC heating core shell (5) passes through the cover plate through hole (201), the opening end is fixedly connected with the cover plate (2) as a whole, the other end is a closed end, immersed in liquid, a PTC heating core (6) is arranged in each PTC heating core shell (5), the PTC heating core (6) heats the liquid after being electrified.
[0029] As Figure 3, PTC heating core shell (5) closed end provided with a plug (7), plug (7), PTC heating core shell (5), cover plate (2) for the same kind of metal, such as stainless steel 304 or stainless steel 316L or titanium alloy material. PTC heating core shell (5) into the liquid in one end and plug (7) welded as a whole, forming a closed end, the other open end through the cover plate through hole (201) and cover plate (2) welded as a whole, fully guarantee the sealing of PTC heating core shell (5) into the liquid.
[0030] Further, in the closed end can also be provided with sealing gasket (12), and before PTC heating core (6) inserted into PTC heating core shell (5), into the PTC heating core shell (5) injection sealing heat conducting glue, play a further sealing and filling assembly gap, conduct heat.
[0031] As Figure 4 , the number of liquid flow channel and the number of PTC heating core (6) is equal, the shell (1) inner wall near the inlet and outlet end is provided with at least two baffles A (401), cover plate (2) toward the chamber side is provided with at least one baffle B (402), so that the liquid flow channel presents a serpentine flow channel, so that the liquid and PTC heating core shell (5) can be fully contacted, the heat emitted by PTC heating core (6) can be quickly taken away by the surrounding liquid, improve the product thermal efficiency.
[0032] As Figure 5 , the shell (1) inner wall near the inlet and outlet end is provided with the same number of PTC heating core shell (5) fixing seat (104), the tail end of PTC heating core shell (5) is fixed, to prevent PTC heating core shell (5) suspended in the liquid, liquid flow when or product vibration swing to the other end of the welding caused by damage.
[0033] As Figure 2 , the shell (1) outer plane near the outlet is provided with a box body (103), to accommodate temperature controller (801) and fuse (802) or one of the temperature protectors (8), temperature protector (8) and PTC heating core (6) are used in series.
[0034] As Figure 2 , in order to monitor the temperature of the liquid at any time, NTC temperature controller (9) is arranged beside the outlet flow channel, and the temperature change of the liquid is understood according to the resistance change of NTC temperature controller (9).
[0035] As Figure 3 , the surface of PTC heating core shell (5) is coated with iron fluoride, which can prevent PTC heating core shell (5) from being corroded. At the same time, due to the extremely low surface tension of the iron fluoride coating, it shows extremely strong non-stickiness, and very few solid dirt can be adhered to the coating, which can prevent the loss of heat transfer caused by fouling and prolong the service life of the product.
[0036] As Figure 4 In order to simplify the assembly process, the baffle A (401) is integrally injection molded with the shell (1), and the baffle B (402) is made of the same metal material as the cover plate (2) and is integrally welded.
[0037] Further, in the utility model, the shell (1) is integrally injection molded with high-temperature-resistant material.
[0038] Example 2
[0039] As Figure 6 Example 2 differs from example 1 in that the temperature controller (801) and the fuse (802) are arranged on the side of the cover plate (2) away from the chamber, and are connected to the PCB circuit board (10) together with the outgoing line end of the PTC heating core (6), simplifying the wiring, improving the production rate, and adding a cover shell (11) to protect the PCB circuit board (10) and the cover plate (2), the cover shell (11) being snap-connected with the shell (1).
[0040] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical application, or improvement to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.
Claims
1. A novel PTC heater characterized by: The utility model relates to a liquid heating device, including a casing (1), the casing (1) one end is equipped with the opening, is equipped with a cover plate (2) at the opening end, the casing (1) is connected with cover plate (2) through sealing ring (3) and forms a chamber, is equipped with flow passage baffle (4) in the chamber, the other end of casing (1) is equipped with import (101) and export (102), each flow passage contains a PTC heating core shell (5), PTC heating core shell (5) passes through cover plate through -hole (201), the opening one end is fixedly connected with cover plate (2) and is integrated, the other end is closed end, is immersed in liquid, each PTC heating core shell (5) is provided with a PTC heating core (6), PTC heating core (6) carries electricity and heats the liquid.
2. A new type of PTC heater according to claim 1, characterized in that: The closed end of PTC heating core shell (5) is equipped with a baffle (7), the baffle (7), PTC heating core shell (5), cover plate (2) are same kind of metal, the one end of PTC heating core shell (5) is immersed in liquid and is welded with baffle (7) and is integrated, forms closed end, the other opening end passes through cover plate through -hole (201) and is welded with cover plate (2) and is integrated, sets up sealing washer (12) at the closed end of welding and is integrated, and before PTC heating core (6) is inserted into PTC heating core shell (5), injects sealing heat conducting glue in PTC heating core shell (5).
3. A new type of PTC heater according to claim 2, characterized in that: The number of liquid flow channel is equal to the number of PTC heating core (6), the inner wall of casing (1) is provided with at least two baffle A (401) near import, export end, cover plate (2) is provided with at least one baffle B (402) towards the chamber side, so that the liquid flow channel presents the serpentine flow channel, so that the liquid and PTC heating core shell (5) can be fully contacted.
4. A new type of PTC heater according to claim 3, characterized in that: The inner wall of casing (1) is provided with the same number of fixed seat (104) as PTC heating core shell (5) near import, export end, fixes the closed end of PTC heating core shell (5), prevents PTC heating core shell (5) from suspending in liquid.
5. A new type of PTC heater according to claim 4, characterized in that: The outer plane of casing (1) is provided with a box body (103) near export (102) to accommodate temperature controller (801) and fuse (802) or one kind of temperature protector (8), and the temperature protector (8) is used in series with PTC heating core (6).
6. A new type of PTC heater according to claim 5, characterized in that: An NTC temperature controller (9) is arranged near the export flow channel of the casing (1).
7. A new type of PTC heater according to claim 6, characterized in that: The outgoing end of PTC heating core (6), temperature controller (801) and fuse (802) are connected to the PCB circuit board (10), and a cover shell (11) is arranged above the PCB circuit board (10), and the cover shell (11) is buckled to the casing (1).
8. A new type of PTC heater according to any one of claims 1 to 7, characterized by: The surface of PTC heating core shell (5) is treated by coating iron fluoride.
9. A new type of PTC heater according to claim 8, characterized in that: The baffle A (401) and the casing (1) can be integrally injection molded, the baffle B (402) is made of the same metal material as the cover plate (2) and is welded integrally.
10. A new type of PTC heater according to claim 9, characterized in that: The casing (1) is injection molded by using high-temperature-resistant material.