CN112383974B

CN112383974B - PTC electric heating element with one-side heating function

Info

Publication number: CN112383974B
Application number: CN202011253619.5A
Authority: CN
Inventors: 赵龙会
Original assignee: SHANGHAI ZIYU ELECTRONIC CERAMICS CO Ltd
Current assignee: SHANGHAI ZIYU ELECTRONIC CERAMICS CO Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2022-10-21
Anticipated expiration: 2040-11-11
Also published as: CN112383974A

Abstract

The application discloses PTC electric heating element that unilateral generates heat, including the heat transfer lamellar body, the fixed PTC that sets up in heat transfer lamellar body one side generates heat the piece to and be used for holding the shell that PTC generates heat the piece, heat transfer lamellar body and shell looks fixed connection, the surface that PTC generates heat the piece is provided with electrode coating, electrode coating is including setting up positive pole coating and the negative pole coating that generates heat board with one side at PTC to and set up positive contact and the negative pole contact that generates heat piece opposite side at PTC, positive contact links to each other with positive pole coating, negative pole contact links to each other with negative pole coating, positive contact and negative pole contact all are connected with the electric wire. This application sets up anodal coating and negative coating in the same one side of PTC heating plate, can reduce the loss of thermal scattering and disappearing and power among the heating process.

Description

PTC electric heating element with one-side heating function

Technical Field

The application relates to the field of PTC heating bodies, in particular to a PTC electric heating element capable of heating at one side.

Background

The constant temperature heating PTC thermistor has the constant temperature heating characteristic, and the principle is that after the PTC thermistor is electrified, the resistance value is heated by self-heating to enter a jump zone, the surface temperature of the constant temperature heating PTC thermistor keeps a constant value, and the temperature is only related to the Curie temperature and the applied voltage of the PTC thermistor and is basically unrelated to the ambient temperature.

In the related art, when the PTC heating plate is energized to generate heat, electrode plates with different electrodes are usually bonded to two ends of the PTC heating plate, and a heat transfer plate for heating an external object is bonded to the outer sides of the electrode plates.

In view of the above-mentioned related arts, the inventors found that the electrode plates are fixed at both ends of the PTC heating plate, so that the whole electrode plates generate heat, and when the PTC heating plate is used, heat generated by the PTC heating plate at one side needs to be utilized, and when the other side does not need to be used, heat generated by the other side is directly wasted, and the heat loss is large.

Disclosure of Invention

In order to reduce the heat loss of the PTC heating plate, the application provides a PTC electric heating element with one side heating.

The PTC electric heating element capable of heating at one side adopts the following technical scheme:

the utility model provides a PTC electric heating element that unilateral generates heat, includes the heat transfer lamellar body, the fixed PTC that sets up in heat transfer lamellar body one side generates heat the piece to and be used for holding the shell that the PTC generates heat the piece, heat transfer lamellar body and shell looks fixed connection, the surface that the PTC generates heat the piece is provided with electrode coating, electrode coating is including setting up positive coating and the negative pole coating that generate heat the board at PTC with one side to and set up positive contact and the negative pole contact that generates heat the piece opposite side at PTC, positive contact links to each other with positive coating, the negative pole contact links to each other with negative pole coating, positive contact and negative pole contact all are connected with the electric wire.

By adopting the technical scheme, when the PTC electric heating element is used, the electric wire is connected with the power supply, and the current flows from the anode coating to the cathode coating on the surface of the PTC heating sheet, so that the single side of the PTC heating sheet generates heat, the heat transfer sheet body generates heat, and the heating function of the PTC electric heating element is realized. The positive coating and the negative coating are arranged on the same side of the PTC heating plate, so that heat loss and power loss in the heating process can be reduced, and the function of heating on one side is realized.

Preferably, the positive pole coating includes the anodal horizontal bar and a plurality of anodal vertical retort of being connected mutually perpendicularly with the anodal horizontal bar, the negative pole coating includes the negative pole horizontal bar and a plurality of negative pole vertical retort of being connected mutually perpendicularly with the negative pole horizontal bar, anodal horizontal bar and negative pole horizontal retort level set up, the anodal vertical retort sets up with the negative pole vertical retort in proper order in crisscross, and the distance between adjacent anodal vertical retort and the negative pole vertical retort equals.

Through adopting above-mentioned technical scheme, set up to equal distance between adjacent anodal vertical retort and the negative pole vertical retort, can make electric current flow more evenly at the in-process from anodal vertical retort flow direction negative pole vertical retort, the PTC piece that generates heat is more even, and the effect of generating heat is better.

Preferably, the positive vertical bar and the negative vertical bar are cuboid, the widths and the lengths of the positive vertical bar and the negative vertical bar are equal, and the distance between every two adjacent positive vertical bars and negative vertical bars is 1mm-4mm.

By adopting the technical scheme, the distance between the anode vertical bar and the cathode vertical bar is set to be 1-4 mm, the distance between the anode vertical bar and the cathode vertical bar can be adjusted according to different voltages, and the phenomenon of electric breakdown caused by overlarge voltage is avoided.

Preferably, the holding tank has been seted up to one side of shell, the bottom of holding tank is provided with the support bar, the PTC generates heat the piece and is located the holding tank and lateral wall and support bar looks butt.

Through adopting above-mentioned technical scheme, set up the support bar in the bottom of holding tank, the support bar can play the supporting role to the PTC piece that generates heat for protect the welding point between electric wire and positive contact and the negative contact.

Preferably, the heat transfer sheet body is hermetically installed at the notch of the accommodating groove.

Through adopting above-mentioned technical scheme, will transfer heat lamellar body sealing installation in the notch department of holding tank, can reduce in the air enters into the holding tank, improve the inside leakproofness of holding tank, reduce the problem that electrode coating is oxidized, improve the holistic life of PTC electric heating element.

Preferably, the trough bottom of holding tank is run through and is seted up the through wires hole, the electric wire is located the through wires hole, sealed setting between the pore wall of electric wire and through wires hole.

Through adopting above-mentioned technical scheme, set up to sealed state between the pore wall with electric wire and through wires hole, further reduced the air and entered into the holding tank in, further improved the inside leakproofness of holding tank.

Preferably, the shell and the heat transfer sheet are both made of alumina, and the silver coating is made of silver.

By adopting the technical scheme, the silver coating is made of silver material, and the silver material has good conductivity, so that the PTC heating plate has higher heating speed.

Preferably, the side wall of the shell is provided with an installation notch.

Through adopting above-mentioned technical scheme, set up the installation breach on the lateral wall of shell, the installation breach is convenient for fix and install the shell.

In summary, the present application includes at least one of the following beneficial technical effects:

the positive coating and the negative coating are arranged on the same side of the PTC heating plate, so that heat loss and power loss in the heating process can be reduced;

by setting the adjacent positive vertical bars and the negative vertical bars to be equal in distance, the current can flow more uniformly in the process of flowing from the positive vertical bars to the negative vertical bars, the PTC heating pieces can heat more uniformly, and the heating effect is better;

through the notch department with heat transfer lamellar body seal installation at the holding tank, can reduce in the air enters into the holding tank, improve the inside leakproofness of holding tank, reduced electrode coating by the problem of oxidation, improved the holistic life of PTC electric heating element.

Drawings

FIG. 1 is an exploded schematic view of an embodiment of the present application;

fig. 2 is a schematic diagram showing the structures of the positive contact and the negative contact in the embodiment of the present application.

Description of the reference numerals: 1. a housing; 2. accommodating grooves; 3. a heat transfer sheet; 4. a PTC heating sheet; 5. coating an electrode; 51. a positive electrode coating; 511. a positive electrode cross bar; 512. a positive vertical bar; 52. a negative electrode coating; 521. a negative electrode horizontal bar; 522. a negative pole vertical bar; 53. a positive electrode contact; 54. a negative contact; 6. a positive electrode connection coating; 7. a negative electrode connecting coating; 8. an electric wire; 9. a threading hole; 10. a supporting strip; 11. and (6) installing a notch.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a PTC electric heating element capable of generating heat on one side.

Referring to fig. 1 and 2, a PTC electric heating element generating heat at one side comprises a rectangular parallelepiped housing 1, a square accommodating groove 2 is formed in one side of the housing 1, a rectangular parallelepiped heat transfer sheet 3 is bonded to a notch of the accommodating groove 2, the heat transfer sheet 3 and the housing 1 are in sealed connection in a bonded state, and a square PTC heating sheet 4 is bonded to one end of the heat transfer sheet 3 close to the accommodating groove 2. Wherein, the shell 1 and the heat transfer sheet body 3 are made of alumina.

One side of the PTC heating sheet 4 close to the bottom of the accommodating groove 2 is plated with an electrode coating 5, the electrode coating 5 comprises a positive electrode coating 51 and a negative electrode coating 52 plated on the same side of the PTC heating plate, and a positive electrode contact 53 and a negative electrode contact 54 plated on the other side, wherein a positive electrode connecting coating 6 is connected between the positive electrode contact 53 and the positive electrode coating 51, a negative electrode connecting coating 7 is connected between the negative electrode contact 54 and the negative electrode coating 52, and the positive electrode connecting coating 6 and the negative electrode connecting coating 7 are both positioned on two opposite side walls of the PTC heating plate. The positive contact 53 and the negative contact 54 are welded with wires 8, and the wires 8 are connected with an external power supply. The positive electrode connecting coating 6, the negative electrode connecting coating 7 and the electrode coating 5 are made of silver.

The positive coating 51 comprises a cuboid-shaped positive transverse bar 511 and a plurality of positive vertical bars 512 vertically connected with the positive transverse bar 511, the negative coating 52 comprises a cuboid-shaped negative transverse bar 521 and a plurality of negative vertical bars 522 vertically connected with the negative transverse bar 521, preferably, the number of the positive vertical bars 512 is 4, the number of the negative vertical bars 522 is 3, the positive transverse bar 511 and the negative transverse bar 521 are horizontally arranged, the positive vertical bars 512 and the negative vertical bars 522 are sequentially arranged in a staggered manner, and the distances between the adjacent positive vertical bars 512 and the negative vertical bars 522 are equal.

The width and the length of the positive vertical bar 512 and the negative vertical bar 522 are equal, the distance between the adjacent positive vertical bar 512 and the negative vertical bar 522 is 1mm-4mm, the distance between the positive vertical bar 512 and the negative vertical bar 522 can be adjusted according to the difference of the voltage communicated by the wire 8, and the voltage communicated by the wire 8 is positively correlated with the distance between the positive vertical bar 512 and the negative vertical bar 522.

When the PTC electric heating element is used, the electric wire 8 is connected with a power supply, and current flows from the positive coating 51 to the negative coating 52 on the surface of the PTC heating sheet 4, so that the single side of the PTC heating sheet 4 generates heat, the heat transfer sheet body 3 generates heat, and the heating function of the PTC electric heating element is realized. Set up to equal distance between adjacent anodal vertical retort 512 and the negative pole vertical retort 522, can make the electric current flow more evenly from anodal vertical retort 512 flow to the in-process of negative pole vertical retort 522, and PTC generates heat piece 4 generates heat more evenly, and the effect of generating heat is better.

Two circular threading holes 9 are formed in the bottom of the accommodating groove 2 in an extending manner, and one ends of the electric wires 8 far away from the positive contact 53 and the negative contact 54 penetrate out of the threading holes 9. The outer wall of the electric wire 8 is bonded to the wall of the threading hole 9 by an adhesive.

Set up to sealed state between the pore wall of electric wire 8 and through wires hole 9 to and with heat transfer lamellar body 3 sealing installation in holding tank 2's notch department, can reduce in the air enters into holding tank 2, improved the inside leakproofness of holding tank 2, reduced the problem that electrode coating 5 is oxidized, improved the holistic life of PTC electric heating element.

The plurality of support bars 10 are integrally formed at the bottom of the accommodating groove 2, the support bars 10 are arranged in a triangular prism shape, and the support bars 10 can support the PTC heating sheet 4 and protect welding points between the electric wire 8 and the positive contact 53 and the negative contact 54. Meanwhile, square mounting notches 11 are formed in two opposite side walls of the outer shell 1, and the mounting notches 11 are convenient for fixing and mounting the outer shell 1.

The implementation principle of the embodiment 1 is as follows: when the PTC electric heating element is used, the electric wire 8 is connected with a power supply, and current flows from the positive coating 51 to the negative coating 52 on the surface of the PTC heating sheet 4, so that the single side of the PTC heating sheet 4 generates heat, the heat transfer sheet body 3 generates heat, and the heating function of the PTC electric heating element is realized. The positive electrode coating 51 and the negative electrode coating 52 are arranged on the same side of the PTC heating plate, so that heat loss and power loss in the heating process can be reduced.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A PTC electric heating element with one side heating, which is characterized in that: the PTC heating plate comprises a heat transfer plate body (3), a PTC heating plate (4) fixedly arranged on one side of the heat transfer plate body (3) and a shell (1) used for containing the PTC heating plate (4), wherein the heat transfer plate body (3) is fixedly connected with the shell (1), an electrode coating (5) is arranged on the surface of the PTC heating plate (4), the electrode coating (5) comprises an anode coating (51) and a cathode coating (52) which are arranged on the same side of the PTC heating plate, and an anode contact (53) and a cathode contact (54) which are arranged on the other side of the PTC heating plate (4), the anode contact (53) is connected with the anode coating (51), the cathode contact (54) is connected with the cathode coating (52), and the anode contact (53) and the cathode contact (54) are both connected with an electric wire (8); anodal coating (51) include anodal horizontal bar (511) and a plurality of anodal vertical retort (512) of being connected perpendicularly mutually with anodal horizontal bar (511), negative pole coating (52) include negative pole horizontal bar (521) and a plurality of negative pole vertical retort (522) of being connected perpendicularly mutually with negative pole horizontal bar (521), anodal horizontal bar (511) and negative pole horizontal retort (521) horizontal setting, anodal vertical retort (512) and negative pole vertical retort (522) set up crisscross in proper order, and the distance between adjacent anodal vertical retort (512) and negative pole vertical retort (522) equals.

2. A single-sided heat emitting PTC electrical heating element according to claim 1, wherein: anodal vertical retort (512) with negative pole vertical retort (522) all are the cuboid form, the width and the length homogeneous phase of anodal vertical retort (512) and negative pole vertical retort (522) are equal, and the distance between adjacent anodal vertical retort (512) and negative pole vertical retort (522) is 1mm-4mm.

3. A single-sided heat emitting PTC electrical heating element according to claim 1, wherein: holding tank (2) have been seted up to one side of shell (1), the bottom of holding tank (2) is provided with support bar (10), PTC generates heat piece (4) and is located holding tank (2) and lateral wall and support bar (10) looks butt.

4. A single-sided heat emitting PTC electrical heating element according to claim 3, wherein: the heat transfer sheet bodies (3) are hermetically arranged at the notches of the accommodating grooves (2).

5. A single-sided heat emitting PTC electrical heating element according to claim 1, wherein: the heat transfer sheet body (3) is characterized in that a threading hole (9) is formed in one end, away from the heat transfer sheet body (3), of the shell (1), and the electric wire (8) and the hole wall of the threading hole (9) are arranged in a sealed mode.

6. A single-sided heat emitting PTC electrical heating element according to claim 1, wherein: the shell (1) and the heat transfer sheet body (3) are both made of alumina, and the electrode coating (5) is made of silver.

7. A PTC electrical heating element generating heat from one side as claimed in claim 1, wherein: the side wall of the shell (1) is provided with an installation notch (11).