PTC (Positive Temperature Coefficient) heating device for filler welding core body

Abstract

The utility model discloses a filler welding core PTC heating device which comprises a core plate (3) and a heating hole shell (5), the core plate (3) is provided with a plurality of first ceramic heating piece installation holes matched with ceramic heating pieces, the heating hole shell (5) is provided with a plurality of ceramic heating piece cavities for containing the ceramic heating pieces, a welding filler groove (4) is formed between the core plate (3) and the heating hole shell (5), and the welding filler groove (4) is provided with a plurality of second ceramic heating piece installation holes matched with the ceramic heating pieces. And the core body plate (3) is fixedly connected with the heating hole shell (5) through the welding filler arranged at the welding filler groove. According to the device, the core body plate and the heating hole shell are in butt joint to form the welding filler groove, the welding filler groove is filled with the welding flux, then the welding flux is fused to form the integral filler welding heating core body, and the PTC heating device for improving the heat efficiency is assembled in the PTC assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filler welding core body PTC heating device belongs to PTC heating device technical field. BACKGROUND

[0002] The PTC heating device is a kind of heat exchange using ceramic heating sheet after electrification with other medium, usually including heating core body, shell and electrical connector and PCB controller, heating core body adopts die casting forming mode, single heating hole external waterway presents S type trend, and only waterway sealing groove is present outside heating core body.

[0003] Conventional heating core body adopts die casting forming, and there is greater wall thickness, and the die is complex, and the process difficulty is big, and the thermal resistance is higher;Single heating hole external waterway adopts S type trend, and the flow resistance is higher, which is not conducive to heat dissipation, and only waterway sealing cannot avoid the poor insulation caused by electrical water vapor sealing, and part of invention protection cannot be popularized universally. INVENTION CONTENTS

[0004] The utility model solves the technical problems of overcoming the defects of prior art, and provides a filler welding core body PTC heating device, which can utilize the characteristics of filler welding between the core body plate and the heating shell without using die casting core body;The electrical sealing groove is provided on the core body plate, the bottom can be sealed with liquid medium or other medium, the outside can be sealed with electrical devices, so that heat and medium can be quickly transmitted, good electrical insulation can be realized, and high heat conduction efficiency and safety can be realized.

[0005] In the first aspect, the utility model provides a filler welding core body PTC heating device, which comprises a core body plate and a heating hole shell, a plurality of first ceramic heating sheet mounting holes matched with ceramic heating sheets are formed on the core body plate, a plurality of ceramic heating sheet cavities for accommodating ceramic heating sheets are formed on the heating hole shell, a welding filler groove is formed between the core body plate and the heating hole shell, and the core body plate is fixedly connected with the heating hole shell through the welding filler arranged in the welding filler groove.

[0006] Preferably, a plurality of ear plates fixedly connected with the heating hole shell are included, and a fixed mounting hole is formed on the ear plate.

[0007] Preferably, the heating hole shell comprises a horizontal plate and a plurality of ceramic heating sheet housings, a plurality of second ceramic heating sheet mounting holes matched with ceramic heating sheets are formed on the horizontal plate, a plurality of ceramic heating sheet cavities for accommodating ceramic heating sheets are formed on the plurality of ceramic heating sheet housings, and the plurality of ceramic heating sheet housings are sealingly fixedly connected with the second ceramic heating sheet mounting holes.

[0008] Preferably, at least one horizontal plate groove for limiting displacement is formed on the horizontal plate.

[0009] Preferably, a plurality of core body plate fixing holes for fixing are formed on the core body plate.

[0010] The utility model discloses reached the beneficial effects of:

[0011] The core plate and the heating hole shell of the device are butted to form a solder filling groove, and after filling the solder in the solder filling groove, the solder is melted to form a whole filling solder heating core, which is assembled in the PTC assembly to realize the PTC heating device with improved thermal efficiency. The butt joint type welding groove is filled with solder after melting, and then is welded and formed, which contains the functions of product fixation, electrical sealing, thin-walled heating hole relative to the die-casting core and bottom liquid medium sealing surface, and the filling solder heating core is formed. The device solves the problems of complex die-casting mold opening process, high die-casting mold opening cost and thick wall, and solves the problems of product fixation, electrical sealing and bottom medium sealing, reduces the thermal resistance in the heat exchange process of the heating body, and realizes high thermal efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0013] Figure 1 is the structure diagram in some embodiments of the present application;

[0014] Figure 2 is the structure diagram in some embodiments of the present application;

[0015] The meaning of the reference signs is as follows: 1 is a fixed mounting hole; 2 is an electrical sealing groove; 3 is a core plate; 4 is a solder filling groove; 5 is a heating hole shell; 51 is a transverse plate; 52 is a ceramic heating sheet shell; 511 is a transverse plate groove. DETAILED DESCRIPTION

[0016] In order to facilitate the technical solutions of the application, the following first explains some concepts related to the present application.

[0017] It should be noted that if the utility model embodiment has directionality indication (such as up, down, left, right, front, back, etc.), it is only used to explain the relative position relationship and movement condition between the components in a certain specific posture, and if the specific posture changes, the directionality indication also changes accordingly.

[0018] In addition, if the description of "first" and "second" and the like is involved in the utility model, it is only used for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one feature. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0019] Referring to Figure 1 The application discloses a kind of filler welding core PTC heating device, including core plate 3 and heating hole shell 5, multiple first ceramic heating sheet mounting holes of cooperation ceramic heating sheet are set on core plate 3, multiple ceramic heating sheet chambers for accommodating ceramic heating sheet are set on heating hole shell 5, welding filler groove 4 is formed between core plate 3 and heating hole shell 5, core plate 3 is fixedly connected heating hole shell 5 by welding filler arranged at welding filler groove, core plate 3 can be plane panel, welding groove adopts butt joint type welding groove and is welded into shape by filling filler melting, this PTC heating device includes product fixation, electrical sealing, thin-walled heating hole relative to die-casting core and bottom liquid medium sealing surface several functions integrated together by heating core of filler welding formation.Using the structure device of the application to realize the heating device of PTC heater, the problem of complex die-casting opening mould process, high die-casting opening mould cost and thick wall is solved, while the problems of product fixation, electrical sealing bottom medium sealing are solved, the thermal resistance in the heat exchange process of heating body is reduced, and high thermal efficiency is realized.Core plate and heating hole shell are butt jointed to form welding filler groove in the device, and a whole filler welding heating core is formed by filling filler melting after welding filler groove, so that the PTC heating device with improved thermal efficiency is assembled in PTC assembly.

[0020] In the embodiment of the application, a plurality of ear plates fixedly connected with the heating hole shell 5 are included, and a fixed mounting hole 1 fixed by a screw and a shell is formed on the ear plate.

[0021] In the embodiment of the application, the heating hole shell 5 includes a horizontal plate 51 and a plurality of ceramic heating sheet housings 52, a second ceramic heating sheet mounting hole cooperating with the ceramic heating sheet is formed on the horizontal plate 51, and the plurality of ceramic heating sheet housings 52 are provided with a plurality of ceramic heating sheet chambers for accommodating the ceramic heating sheet, and the plurality of ceramic heating sheet housings 52 are sealingly and fixedly connected with the second ceramic heating sheet mounting hole.

[0022] In the embodiment of the application, at least one horizontal plate groove 511 for limiting displacement of the heating hole shell 5 is formed on the horizontal plate 51, and the horizontal plate groove 511 is engaged with the shell.

[0023] In the embodiment of the present application, a plurality of core plate fixing holes 31 for fixing the shell or the heat hole shell 5 are formed on the core plate 3.

[0024] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments mainly describes the difference from other embodiments.

[0025] Other embodiments of the present application will be readily apparent to those skilled in the art in view of the description and practice of the present application. The present application is intended to cover any variations, uses or adaptations of the present application following, in general, the principles of the present application and including such departures from the present application that come within known or customary practice in the art to which the present application pertains or the like. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the application are indicated by the appended claims.

[0026] The above detailed description of the application has further detailed the purpose, technical scheme and beneficial effects of the present application. It should be understood that the above is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical scheme of the present application shall be included in the protection scope of the present application.

Claims

1. A PTC heating device for a filler welded core, characterized in that, The device includes a core plate (3) and a heating chamber shell (5). The core plate (3) has multiple first ceramic heating element mounting holes for matching ceramic heating elements. The heating chamber shell (5) has multiple ceramic heating element chambers for accommodating ceramic heating elements. A welding filler groove (4) is formed between the core plate (3) and the heating chamber shell (5). The core plate (3) is fixedly connected to the heating chamber shell (5) by welding filler provided at the welding filler groove.

2. The PTC heating device for a filler welded core according to claim 1, characterized in that, It includes multiple ear plates that are fixedly connected to the heating chamber shell (5), and fixed mounting holes (1) are opened on the ear plates.

3. The PTC heating device for a filler welded core according to claim 1, characterized in that, The heating chamber shell (5) includes a horizontal plate (51) and multiple ceramic heating element shells (52). The horizontal plate (51) has a second ceramic heating element mounting hole that matches the ceramic heating element. The multiple ceramic heating element shells (52) have multiple ceramic heating element chambers that accommodate the ceramic heating element. The multiple ceramic heating element shells (52) are sealed and fixedly connected to the second ceramic heating element mounting hole.

4. The PTC heating device for a filler welded core according to claim 3, characterized in that, At least one groove (511) is provided on each of the horizontal plates (51) to limit displacement.

5. The PTC heating device for a filler welded core according to claim 1, characterized in that, Several core plate fixing holes (31) are opened on the core plate (3) for fixing.

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