JPS636599Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a see-through window mounting device for a combustion chamber in an oil hot air heater.

For example, in large pot-type oil hot air heaters, a relatively large see-through window is installed in the combustion chamber in order to not only check the combustion status but also to visually appeal the heating effect. There is. In this case, the see-through window is airtightly attached to the front opening of the combustion chamber with a gasket in between, but conventionally, the area around the see-through window is tightened with screws. Therefore, when cleaning combustion soot adhering to the see-through glass or repairing or inspecting the inside of the combustion chamber, it is troublesome to have to loosen many screws and then remove the see-through window. In addition, reinstalling the see-through window required careful attention to tightening the screws so that an even tightening force was applied around the window to prevent combustion gas from leaking, which was extremely troublesome. .

This invention was devised in view of the above-mentioned drawbacks of the conventional art, and its purpose is to provide a see-through window mounting device that allows the see-through window to be easily opened and closed with a single touch operation.

Hereinafter, this invention will be described in detail with reference to embodiments shown in the accompanying drawings.

FIG. 1 schematically shows the internal structure of a pot-type oil hot air heater having a see-through window mounting device according to this invention. First, to briefly explain the overall configuration, this oil hot air heater includes a base 1 and a casing 2 that is placed on the base 1.
A pot-type burner 3 and a combustion chamber 4 connected to the upper part of the pot-type burner 3 are installed within the casing 2. In this case, an internal duct 5 is attached to the combustion chamber 4, which extends from the back wall of the combustion chamber 4 toward the top of the housing 2, and is connected at its end to a chimney (not shown).
Further, a see-through window 6 is attached to the front surface of the combustion chamber 4 so that the inside thereof can be seen through. The front panel 7 of the housing 2 is provided with an opening 8 corresponding to the see-through window 6 and a warm air outlet 9 formed above the opening 8. The transparent window 6 is attached to the combustion chamber 4 so as to be openable and closable using a mounting device 10 according to this invention. That is, as shown in detail in FIGS. 2 and 3, this mounting device 10 attaches brackets 13, 13 on the back side of a flange 12 formed at the periphery of the front opening 11 of the combustion chamber 4. A lever 14 is rotatably mounted through the lever 14, and an arm 15 is connected to the lever 14 to hold the see-through window 6 between the lever 14 and the flange 12.
Note that the see-through window 6 includes a heat-resistant see-through glass 17 surrounded by a metal frame 16. In this case, the metal frame 16 is the outer frame 1
6a and an inner frame 16b, and a gasket 18 made of asbestos or the like is provided at the holding part of the see-through glass 17 and the abutting part against the flange 12.
is installed. In this embodiment, the arm 15 is connected to the pivoting base end of the lever 14, and has a first curved portion 15a formed in a substantially inverted U shape so as to straddle the flange 12 from that portion. ,
An engaging part 15b is bent at a substantially right angle from the rotating end of the first curved part 15a along the metal frame 16, and from the other end of the engaging part 15b toward the back side of the flange 12, First curved portion 15a
The second curved part 1 is bent into an inverted U shape in the same way as
5c, and a support shaft portion 15d bent at a substantially right angle so as to be pivotally supported by one bracket 13 from the end of the second curved portion 15c. Further, a receiving plate 19 having an engagement hole (not shown) is attached to the lower edge of the flange 12. A tongue piece 20 that is inserted is formed. In addition, 2
Reference numeral 3 designates a speed nut fitted to the support shaft portion 15c to prevent it from coming off.

In the above configuration, in order to attach the see-through window 6 to the front opening 11 of the combustion chamber 4, the tongue piece 20 of the see-through window 6 is inserted into the engagement hole of the receiving plate 19, and then the lever 14 is moved toward the front side. All you have to do is pull it.
That is, when the lever 14 is forcibly rotated counterclockwise from the chain line position in FIG. It slides and engages with a stepped portion 24 formed on the metal frame 16, as shown by the solid line in the figure. As a result, the transparent window 6 is attached to the flange 1 at the engagement portion 15b of the arm 15.
It is firmly held between the two. In this embodiment, in order to reduce the operating force of the lever 14, as shown in FIG.
Protrusions 22, 22 in point bonding or line contact with 5b
is provided. On the other hand, in order to open the see-through window 6 when cleaning the see-through glass 17 or repair or inspect the inside of the combustion chamber 4, contrary to the above, move the lever 14 clockwise in FIG. It can be removed from the frame 16.

As is clear from the description of the embodiments described above, according to this invention, the see-through window 6 can be opened and closed very easily by simply operating the lever 14 without using any tools such as a screwdriver, and is extremely practical. It is.

[Brief explanation of the drawing]

Fig. 1 is a sectional view schematically showing the internal structure of a pot-type oil hot air heater having a see-through window mounting device of this invention, Fig. 2 is a plan view of the see-through window mounting device of this invention, and Fig. 3 is a sectional view taken along the - line, and FIG. 4 is a front view thereof. In the figure, 2 is the housing, 4 is the combustion chamber, 6 is the transparent window, 1
0 is a mounting device, 11 is a front opening, 12 is a flange, 13 is a bracket, 14 is a lever, 15 is an arm, 15a, 15c are curved parts, 15b is an engaging part, 16 is a metal frame, 17 is transparent glass, 2
2 is a protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A device for attaching a heat-resistant see-through window surrounded by a metal frame in an openable and closable manner to an opening formed in a combustion chamber, the opening of the combustion chamber It includes a lever rotatably attached via a bracket to the back side of the flange formed on the periphery, and the lever includes:
A see-through window mounting device for a combustion chamber in an oil hot air heater, characterized in that an arm is connected to the front surface of the flange to clamp the metal frame when the metal frame is rotated. (2) In claim (1) for utility model registration, the arm includes a pair of curved portions formed in a substantially inverted U shape so as to span from the back surface of the flange to the front surface thereof, and the curved portions. and a locking portion formed linearly so as to extend parallel to the metal frame between rotating ends of the transparent window mounting device. (3) In claim (1) or (2) of the utility model registration, the metal frame is provided with a protrusion formed to make point or line contact with the arm at the initial stage of engagement of the arm. The above-mentioned see-through window mounting device.