CN219318220U

CN219318220U - Nitrogen oven flow stabilizing structure

Info

Publication number: CN219318220U
Application number: CN202320578240.4U
Authority: CN
Inventors: 孙涛; 唐伟炜; 丁海春; 周仪; 张竞扬; 柯军松; 吴庆华; 徐晓枫; 龚新勇; 戴文兵; 刘阳
Original assignee: Hefei Fast Core Microelectronics Co ltd
Current assignee: Hefei Fast Core Microelectronics Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-07-07
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses a nitrogen oven stable flow structure, which comprises an oven, a first pipeline and a second pipeline, wherein the first pipeline is connected with the oven; one side of the oven is provided with an air inlet pipe which is respectively connected with the first pipeline and the second pipeline; the first pipeline and the second pipeline are respectively connected with different nitrogen sources; the first pipeline comprises a first pressure stabilizing valve and a first electromagnetic valve which are sequentially close to the air inlet pipe; the second pipeline comprises a pressure gauge, a second pressure stabilizing valve, a second electromagnetic valve and a flow valve which are sequentially close to the air inlet pipe. According to the utility model, the first pipeline and the second pipeline are arranged and are respectively and independently connected with the oven, namely, the first pipeline and the second pipeline are not communicated, so that residual nitrogen in the first pipeline cannot flow back into the second pipeline after the ventilation of the first pipeline is closed, the flow meter value in the second pipeline is always in a normal state, and the occurrence of abnormal conditions of the machine caused by the fact that the gas flow exceeds the specification value can be effectively avoided.

Description

Nitrogen oven flow stabilizing structure

Technical Field

The utility model relates to the technical field of nitrogen ovens, in particular to a nitrogen oven stable flow structure.

Background

The nitrogen oven adopts the digital display temperature control system, has the advantages of simple reading, convenient adjustment and the like, but the side face of the oven is provided with the air inlet and the air outlet device with the regulating valve, so that the flow of protective gas is convenient to control and adjust, the horizontal air supply system is adopted, the heating is more uniform, the nitrogen is added on the basis of the original industrial oven, the nitrogen is inert gas, the chemical change is not easy to occur, the nitrogen is added in the industrial oven, the contact of electronic components and oxygen is reduced, the oxidation of the electronic components is avoided, and the service life of the electronic components is influenced.

The pipeline assembly for conveying nitrogen by the existing nitrogen oven is generally divided into two pipelines, but the two pipelines are connected with the same nitrogen source, when the nitrogen oven begins to work, the first pipeline is opened firstly to be filled with nitrogen for 10 minutes, and meanwhile, the second pipeline is opened in the whole process to convey nitrogen. The first pipeline is closed after ventilation for 10 minutes, and at the same time of closing, the first pipeline is communicated with the second pipeline, so that residual nitrogen in the first pipeline can all flow into the second pipeline, the flow meter value in the second pipeline is changed and exceeds the specification value, and the machine is triggered to alarm.

Therefore, there is a need for a nitrogen oven stable flow configuration that addresses the above-described issues.

Disclosure of Invention

The utility model aims to provide a stable flow structure of a nitrogen oven, so as to avoid the condition that the gas flow exceeds a specification value and achieve the purpose of reducing the abnormal times of a machine.

In order to solve the technical problems, the utility model provides a nitrogen oven stable flow structure, which comprises an oven, a first pipeline and a second pipeline;

one side of the oven is provided with an air inlet pipe which is respectively connected with the first pipeline and the second pipeline;

the first pipeline and the second pipeline are respectively connected with different nitrogen sources;

the first pipeline comprises a first pressure stabilizing valve and a first electromagnetic valve which are sequentially close to the air inlet pipe;

the second pipeline comprises a pressure meter, a second pressure stabilizing valve, a second electromagnetic valve and a flow valve which are sequentially close to the air inlet pipe.

Further, the air inlet pipe comprises a preheating pipe and a nut;

the nut is arranged at the end part of the preheating pipe;

the ends of the first pipeline and the second pipeline are respectively provided with threads matched with the nuts.

Further, sealing rings are further arranged at the ends of the first pipeline and the second pipeline.

Further, the sealing ring is attached to the end portion of the preheating pipe.

Further, a heating wire is arranged in the preheating pipe.

Further, a controller is arranged in the oven and is electrically connected with the heating wire.

Compared with the prior art, the utility model has at least the following beneficial effects:

through setting up first pipeline and second pipeline, and with first pipeline and second pipeline respectively with oven independent connection, be not the intercommunication between first pipeline and the second pipeline promptly, and then when first pipeline ventilation is closed the back, its inside surplus nitrogen gas can not flow back to in the second pipeline to guarantee that the flow table numerical value is in normal state throughout in the second pipeline, thereby can effectively avoid appearing gas flow and surpass the specification value, and the abnormal condition emergence of initiation board.

Further, this device is through being provided with the heater strip inside the intake pipe for when nitrogen gas pours into the oven inside in first pipeline and the second pipeline, make nitrogen gas can carry out the preheating operation, with the heating rate after promoting nitrogen gas entering oven, promote the result of use.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the nitrogen oven steady flow structure of the present utility model;

FIG. 2 is a schematic view of the structure of the air inlet pipe in the nitrogen oven steady flow structure of the present utility model;

FIG. 3 is a schematic view of a partial structure of a first pipe in the stable flow structure of the nitrogen oven according to the present utility model.

Detailed Description

The nitrogen oven stable flow architecture of the present utility model will be described in more detail below in conjunction with the schematic drawings, wherein preferred embodiments of the present utility model are shown, it being understood that one skilled in the art could modify the utility model described herein while still achieving the beneficial effects of the present utility model. Accordingly, the following description is to be construed as broadly known to those skilled in the art and not as limiting the utility model.

The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

As shown in fig. 1 to 3, the embodiment of the present utility model provides a nitrogen oven stable flow structure, which comprises an oven 1, a first pipeline 2 and a second pipeline 3.

One side of the oven 1 is provided with an air inlet pipe 4 connected with the first pipe 2 and the second pipe 3, respectively.

The first pipeline 2 and the second pipeline 3 are respectively connected with different nitrogen sources.

The first pipe 2 includes a first pressure stabilizing valve 21 and a first solenoid valve 22 which are sequentially adjacent to the intake pipe 4.

The second pipeline 3 comprises a pressure gauge 31, a second pressure stabilizing valve 32, a second electromagnetic valve 33 and a flow valve 34 which are sequentially close to the air inlet pipe 4.

To sum up, this device is through setting up first pipeline 2 and second pipeline 3, and with first pipeline 2 and second pipeline 3 respectively with oven 1 independent connection, be not the intercommunication between first pipeline 2 and the second pipeline 3 promptly, and then when first pipeline 1 ventilates and closes the back, its inside surplus nitrogen gas can not flow back to in the second pipeline 2 to guarantee that the flow table numerical value is in normal state all the time in the second pipeline 2, thereby can effectively avoid appearing gas flow and surpass the specification value, and the unusual condition of initiating the board takes place.

In the present embodiment, as shown in fig. 2, a specific air intake pipe 4 is provided so that the first pipe 2 and the second pipe 3 are quickly connected to or disconnected from the air intake pipe 4.

The air inlet pipe 4 comprises a preheating pipe 41 and a nut 42.

The nut 42 is arranged at the end of the preheating pipe 41; the ends of the first pipe 2 and the second pipe 3 are provided with threads matching the nuts 42.

As shown in fig. 3, furthermore, to promote tightness of the joint. The ends of the first pipeline 2 and the second pipeline 3 are also provided with sealing rings 5.

Wherein the sealing ring 5 is attached to the end of the preheating pipe 41.

With continued reference to fig. 2, the preheating pipe 41 has a heating wire 43 therein, and the oven 1 has a controller therein, and the controller is electrically connected to the heating wire 43.

Namely, by embedding the heating wires 43 in the first pipeline 2 and the second pipeline 3, the nitrogen is preheated before entering the oven 1, so that the condition that the temperature of the nitrogen is too low to influence the heating rate of the nitrogen entering the oven 1 later is avoided.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The nitrogen oven stable flow structure is characterized by comprising an oven, a first pipeline and a second pipeline;

2. The nitrogen oven stable flow structure of claim 1, wherein the air inlet pipe comprises a preheating pipe and a nut;

the nut is arranged at the end part of the preheating pipe;

3. The nitrogen oven stable flow structure of claim 2, wherein ends of the first and second pipes are further provided with sealing rings.

4. The nitrogen oven stable flow structure of claim 3, wherein the sealing ring is attached to the end of the preheating tube.

5. The nitrogen oven stable flow structure of claim 2, wherein the preheating tube is internally provided with a heating wire.

6. The nitrogen oven stable flow structure of claim 5, wherein a controller is built into the oven, the controller being electrically connected to the heater wire.