CN211120022U - Anti-oxidation quadrilateral PTC heater - Google Patents

Abstract

The utility model discloses an anti-oxidation quadrilateral PTC heater, which comprises a liquid inlet and outlet port, a quadrilateral tube body, an electric heater and a metal tube, wherein the electric heater is arranged on the peripheral outer wall of the quadrilateral tube body, a bracket is arranged at the chamfer part and extends out of the electric heater, and the bracket is respectively connected with the two ends of the electric heater and fixes the electric heater; PTC heating sheets are filled in the centers of the inner parts of the electric heaters, conducting strips are fixed on the PTC heating sheets, electrode plates are wrapped outside the PTC heating sheets, and silica gel heat-conducting insulating layers are coated between the PTC heating sheets and the electrode plates; the utility model discloses an install tetragonal body, electric heater and tubular metal resonator, be convenient for generate heat through the inside PTC of each electric heater piece circular telegram of generating heat, the heat is through the leading-in tetragonal body of the electric heater of each direction, carries out the heat exchange to the inside fluid that flows of tubular metal resonator, is convenient for increase the collection thermal efficiency of device, the use of the device of being convenient for.

Description

Anti-oxidation quadrilateral PTC heater

Technical Field

The utility model relates to an electric heater technical field specifically is an anti-oxidation quadrangle PTC heater.

Background

With the continuous development of society, the electric heater has become one of the most common electric appliance accessories in people's daily life, the use requirements of different electric appliances are heated by heating, preserving heat and heating flowing liquid and gaseous medium, and among the electric heaters, the PTC electric heater is widely applied to various electric appliances because of the constant temperature heating characteristic, and the existing PTC electric heater has the following defects in the use process:

1. most of the existing PTC electric heaters are heated by a single heater, so that the heating is slow, the heat gathering rate is slow, and the heat gathering effect is poor;

2. most of the existing PTC electric heaters have poor insulativity and thermal conductivity, and the safety of the device in use cannot be ensured;

3. the metal tube in the existing PTC electric heater has poor high temperature resistance and corrosion resistance, is easy to deform or corrode at high temperature, and has poor oxidation resistance of the outer tube body and short service life of the device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-oxidation quadrangle PTC heater to the single heater that proposes heats in solving above-mentioned background art, generates heat slower, gathers hot speed slow, gathers hot effect not good, and body antioxidant ability is not good, installs the short problem of life.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-oxidation quadrilateral PTC heater comprises a liquid inlet and outlet port, a quadrilateral tube body, an electric heater and a metal tube; a metal pipe is arranged in the center of the interior of the quadrangular pipe body, a polyvinylidene fluoride anti-corrosion layer is coated on the inner wall of the metal pipe, an opening on one side of the metal pipe is a liquid inlet/outlet port, and radiating fins are uniformly arranged and attached on the outer side wall of the metal pipe; the electric heater is arranged on the peripheral outer wall of the quadrangular pipe body and is tightly attached to the quadrangular pipe body, an alumina oxidation resistant layer is coated on the outer side wall of the electric heater, chamfers are formed at four corners on the outer side wall of the quadrangular pipe body respectively, supports extend out of the chamfers to the electric heater, and the supports are connected with two ends of the electric heater respectively and fix the electric heater; PTC heating sheets are filled in the center of the electric heater, a conducting strip is fixed between every two adjacent PTC heating sheets, the outer side wall of each PTC heating sheet is wrapped with an electrode sheet, and a silica gel heat-conducting insulating layer is coated between each electrode sheet and each PTC heating sheet; one end of the outer side of the electric heater is connected with a lead.

Preferably, the joints of one end of the liquid inlet and outlet port and the metal pipe are provided with sealing rings.

Preferably, the four-corner tube body is made of aluminum, and an aluminum oxide oxidation resistant layer is coated on the outer side wall of the four-corner tube body.

Preferably, the electric heater is centrally symmetrical with respect to the metal tube.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the anti-oxidation quadrilateral PTC electric heater is provided with the quadrilateral tube body, the electric heater and the metal tube, so that the PTC heating sheets in the electric heater can be electrified to heat, heat is introduced into fluid flowing in the metal tube through the electric heater in each direction to carry out heat exchange, the heat collection efficiency of the device is increased, and the device is convenient to use;

2. the anti-oxidation quadrilateral PTC electric heater is provided with the heat exchange cavity and the radiating fins, and the radiating fins in the heat exchange cavity can effectively increase the heat exchange area of the metal tube, so that the heat exchange efficiency of the device is increased, the device is heated quickly, and the device is convenient to use;

3. the anti-oxidation quadrilateral PTC electric heater is provided with the silica gel heat conduction insulating layer, the electrodes, the conducting strips and the PTC heating sheets, so that the silica gel heat conduction insulating layer can effectively increase the insulativity and the heat conduction effect of the electric heater, and the use safety of the device is increased;

4. this anti-oxidation quadrangle PTC electric heater is through being provided with aluminium oxide antioxidation layer and polyvinylidene fluoride anti-corrosion coating, is convenient for increase the high temperature resistance and the corrosion resistance of metal pipe inner wall through the polyvinylidene fluoride anti-corrosion coating, effectively avoids metal pipe high temperature deformation or corruption, is convenient for increase the oxidation resistance on device surface through aluminium oxide antioxidation layer, avoids the device to use oxidation damage after long-time the use, is convenient for increase the life of device, the use of the device of being convenient for.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic sectional view of the electric heater of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of the quadrangular tube of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an embodiment: an anti-oxidation quadrilateral PTC heater comprises a liquid inlet port 11, a quadrilateral tube body 1, an electric heater 2 and a metal tube 3; the quadrangular pipe body 1 is made of aluminum, and an alumina oxidation resistant layer 19 is coated on the outer side wall of the quadrangular pipe body 1; a metal tube 3 is arranged in the center of the interior of the quadrangular tube body 1, an opening at one side of the metal tube 3 is a liquid inlet/outlet port 11, sealing rings 13 are arranged at the joints of one ends of the liquid inlet/outlet ports 11 and the metal tube 3, a polyvinylidene fluoride anti-corrosion layer 31 is coated on the inner wall of the metal tube 3, and radiating fins 32 are uniformly mounted and attached on the outer side wall of the metal tube 3; the electric heater 2 is arranged on the peripheral outer wall of the quadrangular pipe body 1 and is tightly attached to the quadrangular pipe body 1, and the electric heater 2 is symmetrical about the center of the metal pipe 1; the outer side wall of the electric heater 2 is coated with an alumina oxidation resistant layer 21, four corners on the outer side wall of the quadrangular pipe body 1 are respectively formed with chamfers, the chamfers extend towards the electric heater 2 and are provided with brackets 12, and the brackets 12 are respectively connected with two ends of the electric heater 2 and fix the electric heater 2; PTC heating sheets 34 are filled in the center of the electric heater 2, a conducting strip 35 is fixed between every two adjacent PTC heating sheets 34, an electrode plate 36 is wrapped outside each PTC heating sheet 34, and a silica gel heat conducting insulating layer 37 is coated between each PTC heating sheet and each electrode plate; the outer end of the electric heater is connected with a lead wire 22.

The working principle is as follows: when the device is used, the liquid inlet and outlet port 1 is fixedly connected with a corresponding connecting pipe, an external power supply is connected, the PTC heating sheet 34 in the electric heater 2 is electrified to generate heat, the heat is led into the device through the electric heater 2 in 4 directions through the metal pipe, the fluid 10 flowing in the metal pipe 3 is subjected to heat exchange, the heat collection efficiency of the device is increased, the heat exchange area of the metal pipe 3 can be effectively increased by the heat radiating fins 32 on the metal pipe 3, the heat exchange efficiency of the device is increased, the device is rapidly heated, the device is convenient to use, meanwhile, the high temperature resistance and the corrosion resistance of the inner wall of the metal pipe 3 can be effectively increased by the polyvinylidene fluoride anti-corrosion layer 31, the high temperature deformation or corrosion of the metal pipe 3 is effectively avoided, the service life of the metal pipe 3 is prolonged, the insulation performance and the heat conduction effect of the electric heater 2 can be effectively increased by the silica gel heat conduction insulating layer 37, the oxidation resistance of the surface of the device can be effectively improved by the alumina oxidation resistant layer 19, the device is prevented from being oxidized and damaged after being used for a long time, the service life of the device is prolonged, and the device is convenient to use.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (4)

1. An anti-oxidation quadrilateral PTC heater, includes liquid inlet and outlet port, quadrangle body, electric heater and metal pipe, its characterized in that: a metal pipe is arranged in the center of the interior of the quadrangular pipe body, a polyvinylidene fluoride anti-corrosion layer is coated on the inner wall of the metal pipe, an opening on one side of the metal pipe is a liquid inlet/outlet port, and radiating fins are uniformly arranged and attached on the outer side wall of the metal pipe; the electric heater is arranged on the peripheral outer wall of the quadrangular pipe body and is tightly attached to the quadrangular pipe body, an alumina oxidation resistant layer is coated on the outer side wall of the electric heater, chamfers are formed at four corners on the outer side wall of the quadrangular pipe body respectively, supports extend out of the chamfers to the electric heater, and the supports are connected with two ends of the electric heater respectively and fix the electric heater; PTC heating sheets are filled in the center of the electric heater, a conducting strip is fixed between every two adjacent PTC heating sheets, the outer side wall of each PTC heating sheet is wrapped with an electrode sheet, and a silica gel heat-conducting insulating layer is coated between each electrode sheet and each PTC heating sheet; one end of the outer side of the electric heater is connected with a lead.

2. An oxidation-resistant quadrangular PTC heater according to claim 1, wherein: the four-corner tube body is made of aluminum, and an aluminum oxide antioxidation layer is coated on the outer side wall of the four-corner tube body.

3. An oxidation-resistant quadrangular PTC heater according to claim 1, wherein: and sealing rings are arranged at the joints of one ends of the liquid inlet and outlet ports and the metal pipe.

4. An oxidation-resistant quadrangular PTC heater according to claim 1, wherein: the electric heater is centrally symmetrical about the metal tube.

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