CN219589396U

CN219589396U - Clean, energy-saving and heat-insulating structure of baking oven

Info

Publication number: CN219589396U
Application number: CN202320629660.0U
Authority: CN
Inventors: 陈安顺
Original assignee: Group Up Industrial Co ltd
Current assignee: Group Up Industrial Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-08-25
Anticipated expiration: 2033-03-28

Abstract

The utility model provides a cleaning, energy-saving and heat-insulating structure of a baking oven, which is provided with a box body, wherein the box body is provided with an outer shell and an inner cavity, an interlayer space is formed between the inner wall and the outer wall of the inner cavity, a heat-insulating cotton layer is arranged in the interlayer space, and a heat-insulating coating layer is arranged on the outer side surface of the inner wall of the inner cavity.

Description

Clean, energy-saving and heat-insulating structure of baking oven

Technical Field

The present utility model relates to a baking oven for drying Printed Circuit Boards (PCBs), and more particularly, to a baking oven capable of preventing contamination caused by peeling of a heat-insulating coating or generation of particles on an inner wall surface of an oven body due to a high temperature.

Background

In a known printed circuit board (Printed Circuit Board, abbreviated as PCB) manufacturing process, a circuit layout is printed on a multi-layer board, the multi-layer board is then compounded to form a circuit board, and then an ink containing a solvent is coated on the board surface of the circuit board, and the circuit board is placed in a baking oven to perform pre-baking, post-baking or drying, so that the solvent in the ink layer volatilizes and dries. Alternatively, the PCB is stored for a period of time beyond the date of manufacture and must be baked in a baking oven to remove moisture from the absorbed environment, thereby avoiding PCB popping (popcorn) or delamination (delamination).

The baking is carried out by placing the PCB in a baking oven to bake at a temperature exceeding 100 ℃, and optionally keeping the PCB in the baking oven for a period of time after baking; based on energy efficiency and thermal efficiency considerations, known toasters typically require thermal insulation structures to maintain heat as much as possible within the toaster case.

The heat insulation structure of the baking oven is that a heat insulation coating is arranged on the inner side surface of the inner cavity of the oven body, and the heat energy transmission and the energy consumption reduction are effectively blocked by utilizing the material characteristics of low heat conduction and radiation reflection of the heat insulation coating. However, known thermal barrier coatings are prone to spalling or particle generation after a period of high temperature repeated action, resulting in contamination of the environment within the enclosure and the baked PCB, while reducing the thermal insulation effect.

Disclosure of Invention

The utility model aims to provide a clean, energy-saving and heat-insulating structure of a baking oven, which is used for solving the problems that a heat-insulating coating arranged in a baking oven for baking a printed circuit board is easy to peel or generate particles due to the high temperature effect, so that the baking oven and a PCB are polluted, and the heat-insulating effect is reduced.

The utility model is technically characterized in that the heat-insulating coating is arranged on the outer surface of the inner wall of the inner cavity of the baking oven to replace the well-known heat-insulating coating which is arranged on the inner surface of the inner wall of the inner cavity, and an interlayer space is formed between the inner wall and the outer wall of the inner cavity and another heat-insulating material is arranged, so that the heat-insulating coating can not be stripped or generate particles due to the repeated action of high temperature in the inner cavity, the environment of the inner cavity and the baked object can not be polluted even if the particles are stripped or generated, and the heat-insulating action and the energy efficiency of the baking oven can not be influenced.

Based on the above, the utility model provides a clean, energy-saving and heat-preserving structure of a baking oven, which comprises a shell; and the inner cavity is arranged in the shell and is provided with an outer wall and an inner wall, an interlayer space is formed between the outer wall and the inner wall, the interlayer space is provided with a heat insulation cotton layer, and the outer side surface of the inner wall is provided with a heat insulation coating.

In one embodiment of the present utility model, the thermal barrier coating may be applied to the outer surface of the inner wall by spraying, dipping or brushing.

Compared with the prior art, the cleaning, energy-saving and heat-preserving structure of the baking oven provided by the embodiment of the utility model has at least the following beneficial effects:

according to the utility model, the heat insulation coating is arranged on the outer surface of the inner wall of the inner cavity, and the heat insulation cotton layer is arranged between the outer wall and the inner wall, so that most heat is firstly blocked in the inner wall through the heat insulation coating, and a part of heat is blocked by the heat insulation cotton layer positioned on the outer side, so that the heat insulation coating can be stripped or generate particles under the premise of not influencing the heat insulation effect and the energy efficiency, the environment in the inner cavity and a baked object are not polluted even if the heat insulation coating is subjected to high temperature, and the multiple effects of keeping the clean, saving energy and keeping the heat in the furnace are achieved.

Drawings

FIG. 1 is a perspective view showing the appearance of the oven according to the present utility model;

FIG. 2 is a schematic perspective view showing the internal structure of the toaster case of the present utility model at a first angle;

FIG. 3 is a schematic perspective view showing the internal structure of the toaster case of the present utility model at a second angle;

FIG. 4 is a plan view in section along the direction IV-IV of FIG. 1;

fig. 5 is a plan sectional view in the v-v direction of fig. 1.

[ reference numerals description ]

10: a case;

101: a housing;

102: an inner cavity;

1021: an outer wall;

1022: an inner wall;

12: a door;

14: a heat preservation cotton layer;

16: a thermal barrier coating;

18: a wind wheel;

20: a motor;

22: an exhaust pipe;

24: a heater;

26: and an air inlet pipe.

Detailed Description

In order that the utility model may be readily understood, a detailed description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Some, but not all embodiments of the utility model are shown in the drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. All other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without undue experimentation, are within the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As shown in fig. 1 to 5, the oven provided by the present utility model is mainly used for high temperature baking of PCB, and comprises a case 10 having a housing 101 and an inner cavity 102, the case 10 is provided with a door 12, the PCB can be placed into the inner cavity 102 or taken out of the inner cavity 102 when the door 12 is opened, the baking operation is performed when the door 12 is closed, the heater 24 and the motor 20 are started, the motor 20 drives the wind wheel 18 to rotate to introduce the external air into the inner cavity 102 through the air inlet pipe 26, the air absorbs the heat generated by the heater 24 to form hot air, and the hot air flows in a certain path of the inner cavity 102 to dry the PCB and is discharged through the air outlet pipe 22. The door 12 may be disposed on one side or on opposite sides of the case 10 as desired.

More specifically, the case 10 has an outer shell 101 and an inner cavity 102, the inner cavity 102 includes an outer wall 1021 and an inner wall 1022, a space is formed between the outer wall 1021 and the inner wall 1022, a heat insulation cotton layer 14 is disposed in the space, and a heat insulation coating 16 is disposed on an outer surface of the inner wall 1022.

Specifically, the outer wall 1021 and the inner wall 1022 of the inner cavity 102 are preferably made of stainless steel plates or other heat-resistant and corrosion-resistant metal plates, and the end edges of the outer wall 1021 and the inner wall 1022 are connected in a jogged manner with each other in a bent structure so as to form a proper interlayer space between the inner walls 1022 of the outer wall 1021; the outside surface of the inner wall 1022 may be spray coated, dip coated or brush coated to form a suitable thickness of the thermal barrier coating 16. The thermal barrier coating 16 may be any material that provides good thermal barrier properties, is in a liquid state before forming the inner wall 1022, forms on the outside surface of the inner wall 1022, and forms a solid state after drying. For example, the thermal insulation coating 16 can be a functional special thermal insulation coating made of emulsion type water-based environment-friendly materials, which uses high-grade self-crosslinking acrylic resin as an adhesive to fill high-tech hollow ceramic powder particles, and utilizes the low heat conduction characteristic and radiation reflection principle of the filling material to effectively block the transmission of heat energy and reduce the loss of energy sources; furthermore, such a thermal-insulating coating 16 also has the function of insulating air from water vapor, so that it has the function of corrosion resistance in addition to the effects of heat preservation and energy conservation.

According to the utility model, the heat-insulating coating 16 is arranged on the outer side surface of the inner wall 1022 of the inner cavity 102, and the heat-insulating cotton layer 14 is arranged between the outer wall 1021 and the inner wall 1022, so that most heat can be firstly blocked in the inner cavity 102 inside the inner wall 1022 through the heat-insulating coating 16, and part of heat is blocked by the heat-insulating cotton layer 14 positioned between the outer side of the inner wall 1022 and the inner side of the outer wall 1021, and thus the maintenance period and the service life of the baking oven can be prolonged under the premise that the heat-insulating effect and the energy efficiency are not affected, even if the heat-insulating coating 16 is peeled or particles generated due to the repeated action of high temperature, the peeled substances or particles can not pollute the inner environment of the inner cavity 102 and the baked objects.

The above examples merely represent preferred embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model, and such changes and modifications should also be considered as being within the scope of the utility model.

Claims

1. The utility model provides a clean, energy-conserving and heat preservation structure of oven, has a box, its characterized in that, this box includes:

a housing; and

the inner cavity is arranged in the shell and is provided with an outer wall and an inner wall, an interlayer space is formed between the outer wall and the inner wall, the interlayer space is provided with a heat insulation cotton layer, and the outer side surface of the inner wall is provided with a heat insulation coating.

2. The cleaning, energy saving and heat preservation structure of the oven according to claim 1, wherein the heat-insulating coating is formed to a thickness on the outer surface of the inner wall by spraying, dipping or brushing.