CN216815051U

CN216815051U - Heating system in furnace

Info

Publication number: CN216815051U
Application number: CN202220594299.8U
Authority: CN
Inventors: 张延忠; 邓燕; 赵永先
Original assignee: Taimurui Beijing Precision Technology Co ltd
Current assignee: Taimurui Beijing Precision Technology Co ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-06-24
Anticipated expiration: 2032-03-18

Abstract

The application provides an in-furnace heating system, which comprises a furnace chamber, a carrying platform and a heating assembly; the carrying platform is arranged inside the furnace cavity; the heating assembly comprises a quartz sleeve, an infrared heater and a fixing device; the fixing device comprises a fixing plate, an elastic bracket and a fixing bracket; the infrared heater can be inserted into the quartz sleeve, and when the infrared heater is inserted into the quartz sleeve, two ends of the infrared heater extend to the outside of the quartz sleeve from sleeve openings at two ends of the quartz sleeve; two ends of an infrared heater extending out of the sleeve opening of the quartz sleeve are fixed on the elastic support, and external leads on the outermost sides of the two ends of the infrared heater are fixed on the fixed support and are used for being connected with an electrical plug; the elastic support and the fixed support are fixedly arranged on the fixed plate. This application improves heating efficiency and product quality.

Description

Heating system in furnace

Technical Field

The application relates to the field of heating of infrared heating pipes, in particular to a heating system in a furnace.

Background

At present, heaters used in closed furnace chambers such as pressure furnace, vacuum furnace and the like generally adopt a mode of directly fixing on a cavity and sealing treatment at an interface, and the sealing structure is equivalent to fixing an infrared heater, or the infrared heater is installed on the cavity through a quartz sleeve, the quartz sleeve and the cavity are sealed, and an infrared heating pipe is installed inside the sleeve. In the two modes, the infrared heater is directly fixed on the cavity, the maintenance cost is high, when the heating pipe is damaged and needs to be replaced, the whole vacuum sealing structure needs to be disassembled, the heating pipe is taken out, a new heating pipe is replaced, the cavity sealing structure is easily damaged in the disassembling process, and meanwhile, the replacement time cost is high. And through the mode of quartz sleeve installation, pass through elastic mounting seat elastic fixation at infrared heater both ends usually, the heater is just easy in the transportation along axial direction drunkenness, or radial direction rotation, causes the heating inhomogeneous, makes the temperature homogeneity decline in the whole furnace chamber, causes the welding quality problem. Especially, when the infrared heater with the high-temperature resistant reflecting layer is used, the heater axially moves or radially rotates, so that the influence on the temperature uniformity is great, and the quality of a finished product in a furnace chamber is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present application provides an in-furnace heating system, which includes a furnace chamber, a carrier and a heating assembly;

the carrying platform is arranged in the furnace chamber, and the heating assembly is arranged below the carrying platform and used for heating the carrying platform;

the heating assembly comprises a quartz sleeve, an infrared heater and a fixing device; two ends of the infrared heater are connected with external leads which are used for being inserted into the electric plug;

the fixing device comprises a fixing plate, an elastic bracket and a fixing bracket, wherein the elastic bracket and the fixing bracket are vertically fixed on the fixing plate; the fixing plate is arranged below the infrared heater, and the plane of the fixing plate is parallel to the plane of the infrared heater;

the quartz sleeve pipes are uniformly distributed below the carrier platform in parallel, and the plane where the quartz sleeve pipes are located is parallel to the plane where the carrier platform is located; the infrared heater can be inserted into the quartz sleeve, and when the infrared heater is inserted into the quartz sleeve, two ends of the infrared heater extend to the outside of the quartz sleeve from sleeve openings at two ends of the quartz sleeve;

two ends of the infrared heater extending out of the quartz sleeve are respectively fixed on the elastic support, and the external lead is fixed on the fixed support.

Preferably, the furnace chamber is formed by an upper chamber and a lower chamber which can be sealed, a through-hole with an extending direction parallel to the carrying platform is arranged in the lower chamber, and the quartz sleeve is fixed in the through-hole.

Preferably, the quartz sleeve and the lower cavity are sealed outside the lower cavity through a sealing assembly.

Preferably, the fixing bracket further comprises a fixing pressing sheet, and the fixing pressing sheet can press and fix the external lead on the top of the fixing bracket.

Preferably, a groove for placing the external lead is formed in the top of the fixing support, and the diameter of the groove is larger than that of the external lead.

Preferably, the fixing support is made of an insulating material.

Preferably, a cold water pipe is embedded in the bottom of the carrier and used for cooling the heated workpiece.

Preferably, a high temperature resistant reflecting layer is arranged at the bottom of the infrared heater and used for reflecting the infrared rays emitted to the opposite direction of the carrying platform to the direction of the carrying platform.

Preferably, the furnace chamber is a sealable furnace chamber, and positive pressure or negative pressure is arranged in the furnace chamber.

The beneficial effect that this application realized is as follows:

the infrared heating pipe heater can effectively prevent the heater from moving along the axial direction and the radial direction in the transportation process, and especially under the condition that the infrared heating pipe with the high-temperature-resistant reflecting layer is used, the heater of the infrared heating pipe can be uniformly heated, and the heating rate is improved; the external lead wires at the two ends of the infrared heater are fixed, the infrared heater is prevented from being damaged when the connecting wires at the two ends are pulled, the heating pipe is convenient to replace and maintain, and the heating efficiency and the product quality are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a perspective view of a furnace heating system according to the present application.

Fig. 2 is an enlarged view of a point a in fig. 1.

FIG. 3 is a cross-sectional view of a heating system in a furnace according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1-3, the present application provides an in-furnace heating system, which includes a chamber 1, a stage 2, a transparent quartz sleeve 3, a sealing assembly 4, an infrared heater 5, an elastic support 6, a mounting base plate 7, a fixing support 8, and a fixing pressing sheet 9.

The cavity 1 is used as a carrier for mounting other components, and the cavity 1 can be set to be a sealed cavity according to welding requirements, so that positive pressure or negative pressure can be realized in the cavity. A carrying platform 2 is fixed inside the cavity 1, a plurality of mounting through holes for mounting the transparent quartz sleeve 3 are formed below the carrying platform 2, the mounting through holes penetrate through the lower cavity wall of the cavity 1, the mounting through holes are uniformly distributed below the carrying platform 2, the plane where the mounting through holes are located is parallel to the carrying platform 2, the transparent quartz sleeve 3 is mounted in the mounting through holes, and the transparent quartz sleeve 3 is fixed outside the cavity 1 in a sealing mode through the sealing component 4.

As shown in fig. 3, a cold water pipe 21 is embedded in the bottom of the stage 2 to cool the heated workpiece.

The infrared heater 5 is arranged inside the transparent quartz sleeve 3, wherein the inner diameter of the transparent quartz sleeve 3 is larger than the outer diameter of the infrared heater 5, so that the infrared heater 5 can pass through the openings at the two ends of the transparent quartz sleeve 3, in this embodiment, the length of the transparent quartz sleeve 3 is smaller than that of the infrared heater 5, and the two ends of the infrared heater 5 can extend out of the openings at the two ends of the transparent quartz sleeve 3.

The middle of the infrared heater 5 is a quartz heater, the outermost sides of the two ends of the infrared heater are provided with external leads 51, and the external leads 51 are used for being inserted into an electrical plug and can be directly pulled out and inserted during replacement.

The infrared heater 5 can heat the upper stage 2, and as shown in fig. 3, in some embodiments, a high temperature resistant reflective layer is further disposed at the bottom of the infrared heater, and the high temperature resistant reflective layer is used for emitting the infrared heater downward, so that infrared rays which cannot irradiate the stage direction are reflected toward the stage direction.

The mounting bottom plate 7 is used for fixing the elastic support 6 and the fixing support 8, and the plane where the mounting bottom plate 7 is located is parallel to the plane where the infrared heater is located.

The elastic support 6 is arranged on the mounting base plate and used for fixing two ends of the infrared heater, the infrared heater is mainly elastically supported, and vibration damage to the infrared heater can be reduced in the transportation process (the currently used infrared heater mainly comprises a halogen infrared heater and a carbon fiber infrared heater, and the two heaters are more afraid of vibration, so that the middle heating wire is easily broken due to vibration, and the heating pipe is damaged).

The bottom of the fixing support 8 is mounted on the mounting bottom plate, a groove is formed in the top of the fixing support 8, the groove is slightly larger than the diameter of leads at two ends of the infrared heater and used for fixing external leads at the outermost sides of two ends of the infrared heater, the fixing support 8 is made of insulating materials, and mounting threads are arranged on the top of the fixing support 8 and used for mounting a pressing sheet. The fixed pressing sheet 9 is made of an insulating material, and the top of the fixed pressing sheet is provided with a mounting hole for mounting with a fixed support.

In concrete implementation, a heating pipe both ends correspond a set of fixed bolster and fixed preforming respectively, make things convenient for dismouting maintenance, when the heating pipe breaks down and needs to be changed, pull out the external lead wire in heating pipe both ends from electric plug, take off the fixed bolster, take out the infrared heater who damages from transparent quartz sleeve pipe, insert a new infrared heater, the position has been adjusted, puts both ends fixed bolster installation in place to carry out the prepositioning with elastic support, locking fixed bolster and fixed preforming.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. The heating system in the furnace is characterized by comprising a furnace chamber, a carrying platform and a heating assembly;

2. The system of claim 1, wherein the furnace chamber is formed by an upper chamber and a lower chamber which are hermetically sealed, the lower chamber being provided with a through hole extending in parallel with the carrier, the quartz sleeve being fixed inside the through hole.

3. The furnace heating system of claim 2, wherein the quartz sleeve and the lower chamber are sealed outside the lower chamber by a sealing assembly.

4. The furnace heating system of claim 1, wherein the fixing bracket further comprises a fixing pressing piece capable of pressing and fixing the external lead on the top of the fixing bracket.

5. The furnace interior heating system of claim 4, wherein the top of the fixing bracket is provided with a groove for placing the external lead, and the diameter of the groove is larger than that of the external lead.

6. The furnace heating system of claim 1, wherein the mounting bracket is an insulating material.

7. The furnace heating system of claim 1, wherein a cold water pipe is embedded in the bottom of the stage for cooling the heated workpiece.

8. The furnace heating system of claim 1, wherein the bottom of the infrared heater is provided with a high temperature resistant reflecting layer for reflecting infrared rays emitted in a direction opposite to the stage toward the stage.

9. The in-furnace heating system of claim 1, wherein the furnace chamber is a sealable chamber having a positive or negative pressure.