PTC (Positive Temperature Coefficient) two-in-one heater

Abstract

The utility model discloses a PTC (Positive Temperature Coefficient) two-in-one heater, which comprises an aluminum profile main body, a liquid flowing cavity is arranged in the middle of the aluminum profile main body, mounting grooves for mounting PTC heating cores are respectively arranged in two sides of the aluminum profile main body, each PTC heating core comprises a plurality of PTC ceramic heating sheets and a connecting plate which are connected in parallel, and lead-out pins of the connecting plates are respectively riveted with leads; heat dissipation strips are arranged outside the PTC heating cores on the two sides respectively and bonded with the aluminum profile body. End covers are arranged at the two ends of the aluminum profile body respectively, and a liquid inlet and a liquid outlet are formed in the end covers at the two ends respectively. According to the utility model, the existing air heating and water heating are ingeniously combined together, the air heating and the water heating can be simultaneously used, a better heating effect is achieved, the air heating or the water heating can be independently used as required, the whole structure is simple, and the use flexibility is strong.

Description

Technical Field

[0001] The utility model relates to the field of heaters, and particularly relates to a PTC two-in-one heater Background Art

[0002] At present, there are various heaters. Among them, PTC heaters are generally divided into two types: air-heating heaters or pipeline water heaters. The product structures are also very different. Generally, in the industry, two different structural schemes are designed and applied to different scenarios. Moreover, the PTC function (i.e., power or heating effect) has certain limitations, which has always been a bottleneck in the industry

[0003] ① PTC pipeline water heater: Generally, it adopts a structure with a circular or similar circular shape in the middle (for the purpose of passing water), and rectangular through holes are provided on both sides (for the purpose of installing square heating sheets). When a rated voltage is applied to the heater, the PTC heating sheet generates heat and transfers it to the surrounding aluminum material. When the water pump is started synchronously, the water will take away heat when passing through the circular aluminum material, increasing the water temperature to the required temperature and effect

[0004] ② PTC air-heating heater: An electrode strip is adhered to the outside of the PTC ceramic heating sheet, and at least 3 layers of insulating films are wrapped and then an aluminum tube is added to make a heating core. Corrugated heat dissipation strips are pasted on both sides to form the PTC heating module, which is the core key part. Its principle is that when a rated voltage is applied to the PTC, the heat generated by the heating core is conducted to the aluminum corrugated heat dissipation strip. When cold air passes through the fan and air duct and flows through the aluminum heat dissipation strip of the heater, the air is heated. When the heat dissipation reaches equilibrium, the power is in a stable state. The ambient temperature and air flow velocity have a greater impact on the power of the heater. Generally, for a size with a length of 180 mm, the power can only reach about 500 W Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a PTC two-in-one heater, which can simultaneously use air-heating and water-heating to achieve a better heating effect, and can also be used only for air-heating or water-heating separately according to needs. The overall structure is simple and the use flexibility is strong

[0006] To achieve the above object, the utility model provides the following technical solution: A PTC two-in-one heater includes an aluminum profile main body. A liquid flow cavity is provided in the middle of the aluminum profile main body, and installation grooves for installing PTC heating cores are respectively provided on both sides inside. The PTC heating core includes a plurality of parallel PTC ceramic heating sheets and a connecting plate, and the lead-out feet of the connecting plate are respectively riveted with wires; heat dissipation strips are respectively provided on both sides of the aluminum profile main body, and the heat dissipation strips are bonded to the aluminum profile main body; end covers are respectively provided at both ends of the aluminum profile main body, and a liquid inlet and a liquid outlet are respectively provided on the end covers at both ends

[0007] As an optimization, the wire includes two groups, one of which is successively connected to a fuse and a thermostat to form one pole, and connectors are provided at the ends of the two groups of wires to connect to a power supply.

[0008] As a further improvement, a protective box is provided outside the fuse and the thermostat, and the protective box is fixed to the aluminum profile body.

[0009] As a further improvement, an insulating film is wrapped outside the connecting plate.

[0010] As a further improvement, a water storage module is further provided between the aluminum profile body and an end cover at one end.

[0011] As a further improvement, a seal is provided between the aluminum profile body and the end cover.

[0012] The PTC heater of the present utility model is designed to meet the waterproof grade requirement of IP×5 or above, and sealant is applied to both ends of the aluminum profile.

[0013] Advantages of the present utility model: The existing air heating and water heating are skillfully combined together. The air heating and water heating can be used simultaneously to achieve a better heating effect, or only the air heating or water heating can be used separately according to needs. The overall structure is simple and the use flexibility is strong. Combining the two into one also reduces the cost.

[0014] Specifically, compared with the PTC pipeline water heater, only heat dissipation fins are added on both sides, so that the heating or drying effect can reach nearly 1.5 - 1.8 times, and the cost is greatly reduced; when the application scenario only requires air heating, only the water flow needs to be stopped, and when only the water heating function is required, only the air flow needs to be stopped (the fan is in the closed state). When both water heating and air heating are required, the maximum heating effect will be achieved, reaching the highest power effect. The cost of purchasing the heater is reduced a lot; it can more efficiently meet the use effect of customers, is more convenient for procurement, and shortens the supply chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 It is a partial structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 3 It is an exploded schematic diagram of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the aluminum profile body of the present utility model.

[0019] In the figure: 1. Liquid flow cavity; 2. Wire; 3. Heat dissipation strip; 4. End cover; 5. Liquid inlet; 6. Liquid outlet; 7. Connector; 8. Protection box; 9. Water storage module; 10. Bolt; 11. Seal; 12. Installation groove for PTC heating core. Specific implementation manner

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figures 1 to 3 shown, a PTC two-in-one heater includes an aluminum profile body. A liquid flow cavity 1 is provided in the middle of the aluminum profile body. The cavity 1 is designed into a structure such as a circle or an ellipse that is beneficial to liquid circulation. Through the manufacturing process, the PTC is fully contacted and fixed with the aluminum profile to achieve the effect of heating liquid and dissipating heat. Installation grooves 12 for installing PTC heating cores are respectively provided on both sides inside the aluminum profile body. The PTC heating core includes a plurality of parallel PTC ceramic heating sheets and a metal connecting plate. The metal connecting plate can be aluminum, stainless steel, copper, etc. A thermal conductive adhesive is coated on the surface of the PTC ceramic heating sheet and installed in the installation grooves 12 on both sides of the aluminum profile body. The outside of the metal connecting plate is wrapped with an insulating film, and the insulating film material is PI insulating film or ceramic, etc. The lead-out feet of the metal connecting plate are respectively riveted to the wires 2, and the outside of the wires 2 is protected by an insulating sleeve; one group of wires 2 is sequentially connected to a fuse and a temperature controller to form one pole. A protection box 8 is provided outside the fuse and the temperature controller, and the protection box 8 is fixed to the aluminum profile body by screws. Connector 7 is provided at the end of both groups of wires and connected to the power supply. The 2 wires (generally designed in 2 colors) of one group of PTC are paralleled with the 2 wires of the same color of the other group of PTC. One group is then sequentially connected to a fuse and a temperature controller to form one pole. The other end of the wire is provided with a connector and a matching insulating sheath and connected to one pole of the power supply; the other group is directly paralleled and aggregated into one wire. The other end of the wire 2 is provided with a connector and a matching insulating sheath and connected to the other pole of the power supply, finally achieving the power-on effect.

[0022] Heat dissipation strips 3 are respectively arranged on both sides of the aluminum profile body. The heat dissipation strips 3 are bonded to the aluminum profile body with thermal conductive silica gel, and the side edges of the heat dissipation strips 3 are cured in the grooves on the upper and lower sides of the aluminum profile to form an effect of heating air. End caps 4 are respectively arranged at both ends of the aluminum profile body. The end caps 4 at both ends are fixed to the aluminum profile body by bolts 10, and a liquid inlet 5 and a liquid outlet 6 are respectively arranged on the end caps 4. A water storage module 9 is also arranged between the aluminum profile body and the end cap at one end, which can store a certain amount of water, and sealing rings with corresponding structures are provided at the connection with the end cap 4, and sealing rings with corresponding structures are also provided at the liquid outlet 6. A seal 11 is arranged between the aluminum profile body and the end cap. The structure of the seal 11 is designed to have a double-sealing effect of end face and center seal.

Claims

1. A PTC two-in-one heater, comprising an aluminum profile body, characterized in that: A liquid flow cavity (1) is provided in the middle of the aluminum profile body, and mounting grooves (12) for mounting PTC heating cores are respectively provided on both sides. The PTC heating core includes a plurality of parallel PTC ceramic heating sheets and a connecting plate, and the lead-out feet of the connecting plate are respectively riveted with wires (2); heat dissipation strips (3) are respectively provided on both sides of the aluminum profile body, and the heat dissipation strips (3) are bonded to the aluminum profile body; end caps (4) are respectively provided at both ends of the aluminum profile body, and a liquid inlet (5) and a liquid outlet (6) are respectively provided on the end caps (4) at both ends.

2. The PTC two-in-one heater according to claim 1, characterized in that: The wire (2) includes two groups. One group is sequentially connected to a fuse and a thermostat to form one pole, and connectors (7) are provided at the ends of the two groups of wires to connect to the power supply.

3. The PTC two-in-one heater according to claim 2, wherein: A protection box (8) is provided outside the fuse and the thermostat, and the protection box (8) is fixed to the aluminum profile body.

4. The PTC two-in-one heater according to claim 1, characterized in that: The outside of the connecting plate is wrapped with an insulating film.

5. The PTC two-in-one heater according to claim 1, characterized in that: A water storage module (9) is further provided between the aluminum profile body and the end cap at one end.

6. The PTC two-in-one heater according to claim 1, wherein: A seal (11) is provided between the aluminum profile body and the end cap.

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