JPS6246140Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention uses a heat insulating wall configured to suppress heat radiation loss when various types of heating and drying are performed in a furnace such as a drying furnace or baking furnace in painting equipment, or a food drying furnace. In detail, the structure consists of an exterior plate and a plurality of interior panels made of thin metal plates arranged side by side in a state facing the exterior plate inside the furnace, with heat-resistant gaskets sandwiched between the ends of the adjacent panels. The present invention relates to a heat insulating wall structure for a drying oven, which is composed of interior panels connected in a compressed state and a heat insulating material filled and interposed between the inner and outer panels.

Conventionally, asbestos packing with a thickness of 3 to 5 mm has been used as the heat-resistant packing in the heat-insulating wall structure with the above configuration, but in this case, the packing deteriorates over time due to the influence of heat. As the interior panel expands and contracts due to repeated heating and cooling inside the furnace, and a large stress is applied to the gasket, the exposed part of the gasket inside the furnace flakes off, and the asbestos dust that has fallen off enters the furnace. In the case of a painting-related furnace, the dust adheres to the object to be coated, leading to poor coating, and in the case of a food drying furnace, it can cause unfavorable sanitary conditions. It was hot.

In addition, in order to solve these drawbacks, if the gasket is made of a high-quality material such as Teflon, which has high heat resistance and elasticity and does not deteriorate even when exposed to paint solvents, etc., the cost will be high. Not only that, but the packing properties are also disadvantageous.

In view of the above circumstances, the present invention aims to solve the above-mentioned conventional drawbacks by making simple improvements while using materials such as asbestos that are low cost and have excellent packing properties.

The heat insulating wall structure of a drying oven according to the present invention, which has been made to achieve the above object, is characterized in that at least the exposed portion of the heat-resistant packing inside the oven is covered with a heat-resistant sheet cover, and has the following features: The effect has been achieved.

In other words, the exposed parts of the packing that are exposed inside the furnace, which are most affected by heat and stress caused by the expansion and contraction of interior panels, are covered with the seat cover, so even if the packing is made of low-cost, low-grade materials such as asbestos, It is possible to suppress the peeling of the exposed part inside the furnace as much as possible even if it is made of
Even if flaking occurs due to long-term use, the flaked powder can be contained within the seat cover to prevent it from floating and scattering in the furnace.

Therefore, while using a low-cost gasket that has good gasket properties, it is possible to make simple improvements such as adding a seat cover to the conventional structure, which has problems such as poor painting due to gasket dust and unsanitary food products. We were able to solve the drawbacks of the existing ones.

Embodiments of the present invention will be described below in detail based on the drawings. In FIG. 1, A is a heat insulating wall of the drying oven configured in a gate shape extending from the ceiling of the oven to the left and right sides of the oven; As shown in Fig. 2, each insulation wall is made of a thin iron plate with a thickness of 0.6 mm to 0.8 mm, and is made of an exterior plate 1 with reinforcing grooves 1a formed at appropriate intervals.
And, rather than that, a plurality of interior panels 2 made of thin iron plates with a thickness of 0.6 mm to 0.8 mm are arranged in parallel in a state facing the exterior plate 1 in the furnace between the ends of the adjacent panels 2, 2. Interior panels 4 are connected with heat-resistant gaskets 3 made of asbestos sandwiched between them (details of the connection structure will be described later), and glass wool or asbestos is filled between these interior and exterior panels 1 and 4. It is composed of a heat insulating material 5 such as.

The connection of the panels 2 constituting the interior board 4 and the connection of the connection panels 2, 2 and the exterior board 1 are as follows.

As shown in FIGS. 3 and 4, the ends of the interior panel 2 are bent outward over an appropriate width,
A connecting member 7 having a U-shaped cross section is spot welded to the bent end 2a, and a bolt 8 and a nut are inserted into holes 7a and 3a formed through the connecting member 7 and the packing 3, respectively. 9
A plurality of connecting metal fittings are screwed to the inner surface of the exterior plate 1 corresponding to a plurality of locations at appropriate intervals in the longitudinal direction of the connecting member 7, while fixedly connecting the adjacent panels 2, 2 to each other through the The interior panel 2 and the exterior plate 1 are fixedly connected to each other through the fixed connection member 7 and the connection fitting 10, and this fixed connection structure minimizes heat radiation loss due to heat conduction through the fixed connection member 7 and the connection fittings 10. This has the advantage of reducing energy consumption in the drying process.

In the above-described heat-insulating wall structure, the exposed portion 3a of the asbestos heat-resistant packing 3 inside the furnace is coated with Teflon, heat-resistant synthetic rubber, etc.
A heat-resistant seat cover 6 with a thickness of 0.2 to 0.3 mm is rolled up and covered, and both ends of the rolled-up seat cover 6 are sewn with a heat-resistant gasket 3.
The bolt insertion hole 3 is fixed to the
A hole 6a is formed in a portion corresponding to a.

6 and 7 show different embodiments, respectively.
The one in the figure shows the seat cover 6 fixed at a position where both ends thereof do not fit into the bolt insertion holes 3a of the packing 3, and the one in FIG. 7 covers the entire heat-resistant packing 3. The seat cover 6 is formed into a bag shape.

[Brief explanation of the drawing]

The drawings show an example of the heat insulating wall structure of the drying oven according to the present invention, FIG. 1 is a schematic perspective view of the entire drying oven, FIG. 2 is a schematic sectional view of the heat insulating wall, and FIG. 3 is an enlarged cross section of the main part. 4 is a sectional view taken along the line of FIG. 3, FIG. 5 is an enlarged partially cutaway perspective view of the main part, and FIGS. 6 and 7 are enlarged views of the main part showing different embodiments. It is a partially cutaway perspective view. 1...Exterior board, 2...Interior panel, 3...Heat-resistant packing, 4...Interior board, 5...Insulating material, 6...
Heat resistant seat cover.

Claims (1)

[Claims for Utility Model Registration] An exterior plate 1 and a plurality of interior panels 2 made of thin metal plates arranged side by side in a state facing the exterior plate 1 inside the furnace, and the ends of adjacent panels 2, 2 A heat insulating wall of a drying oven, which is composed of an interior panel 4 which is connected with a heat-resistant packing 3 sandwiched between the sections, and a heat insulating material 5 filled and interposed between the inner and outer panels 1 and 4. A heat insulating wall structure for a drying oven, wherein at least an exposed portion 3a of the heat-resistant packing 3 in the oven is covered with a heat-resistant sheet cover 6. The above-mentioned packing 3 is made of asbestos, and the end portion of the seat cover 6 which is rolled up and covered with the exposed part 3a in the furnace of the asbestos packing 3 is fixed to the packing 3 by sewing machine.Registered utility model. A heat insulating wall structure for a drying oven according to claim 1. A heat insulating wall structure for a drying oven according to claim 1, wherein the seat cover 6 is formed into a bag-like shape that covers the entire packing 3.