JPS595795Y2 - hot air heater - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a structure for attaching a back cover to the main body casing of a hot air heater.

On the back plate of the main casing of a hot air heater, a predetermined space is usually formed between the casing and the wall on which it is installed during installation to prevent the wall from heating. The exhaust pipe protrudes and penetrates the wall.

Therefore, a rear cover is attached after the warm air heater is installed to improve the appearance of the rear side and to protect the exhaust pipe.

As described above, when installing the main body casing with the air supply and exhaust pipes attached, the back plate of the main body casing is installed close to the wall of the room, so the cover is placed so that it does not get in the way of construction work, and the air supply and exhaust pipes are In order to be able to confirm whether or not the cylinder has been installed without fear of fire, the cylinder is not installed on the main body casing in advance, but is installed after the installation work is completed.

Further, the height of the cover is shorter than that of the main casing to form a work space between the cover and the installation surface for installing the cover.

By the way, the conventional technology for attaching the back cover is as follows.
75 Daikin Clean Heat Clean Heat Air Conditioner Technical Guide ff Forced Air Supply/Exhaust System published by Daikin Industries, Ltd. On pages 70 and 72, GHS4/GHS4A-GH
Regarding S4B, there was something described as number 7 (rear cover).

As shown in FIG.
A total of 4 screw holes C are formed at the locations, and the rear force bar d
A flange e is provided on the inner peripheral edge of the front surface, and small holes f are formed in four locations of the flange e corresponding to the back plate screw holes C, respectively.

After the installation work is completed, the cover d is brought into contact with the back plate b of the main body casing a, and the hand is inserted into the cover d through the work space between the cover d and the installation surface or the gap between the cover d and the wall surface. By inserting and screwing in the screw g, the back force bar d is attached to the back plate b.

In order to install the rear cover d in this manner, after the installation work is complete, insert your hand into the low space between the rear cover d and the installation surface or the small gap between the rear force bar d and the wall surface and screw it in place. There was a problem in that it was a difficult task to carry out.

Moreover, after installation, when performing services such as cleaning the back side of the heater, repairing and inspecting the inside of the heater, it is difficult not only to install the back cover d as described above, but also to remove it. There was a problem that caused the service quality to deteriorate significantly.

The present invention was devised in view of the above-mentioned circumstances, and its purpose is to provide a projection piece with a screw hole and a long hole on the back of the main body casing, and to attach a retaining projection provided on the back cover to the long hole. At the same time, the through-holes provided in the horizontal plate on the top surface of the back cover are connected to the screw holes, so that the back cover can be screwed to the back of the main body casing from the outside of the back cover. Accordingly, the hot air heater can be detachably attached.

The structure of the present invention is such that an air supply and exhaust pipe is provided protruding from the back plate of the main body casing containing a built-in combustor, and a U-shaped back cover with an open bottom that surrounds the air supply and exhaust pipe is attached to the back plate. In the wind heater, on the back plate of the main body casing,
An elongated hole extending in the vertical direction is provided near both ends in the left and right direction at an intermediate position in the vertical direction, and an upright piece with a screw hole extending upward and outward is provided protrudingly, while the elongated hole is provided at the front edge of the vertical plate of the back cover. A retaining protrusion that fits into the vertical plate is provided protrudingly, a through hole is formed in the horizontal plate that corresponds to the screw hole of the upright piece, and the engaging protrusion is engaged with the elongated hole, and the screw hole By screwing in screws passing through the through holes, the cover can be freely attached and detached from above to the back of the main casing.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a main body casing for hot air heating that is installed close to the wall A of the room, and a combustor 2, a blower fan 3, etc. are built in the casing 1, and the casing 1 Attach the back cover 5 to the back plate 4 of the
A supply/exhaust tube 6 is provided to protrude from the back plate 4, and its tip portion is made to protrude outside through the wall portion A.

The back plate 4 of the main body casing 1 is formed with elongated holes 7, 7 extending in the vertical direction near both ends in the left and right direction at an intermediate position in the vertical direction, and upright pieces 8, 7 extending upward in the back plate 4. 8 are provided in a protruding manner, and a screw hole 9 is formed in each piece 8, respectively.

Further, the rear cover 5 is formed into a U-shape with an open bottom surface, with vertical plates 5b and 5b provided at both ends of one horizontal plate 5a, respectively. Retaining protrusions 10.10 that engage with the elongated holes 7, 7 of the back plate 4 are provided in a protruding manner, and the horizontal plate 5a of the cover 5 is provided with the respective upright pieces 8.
A through hole 11.11 is formed to correspond to the through hole 9.

In the figure, reference numeral 12 denotes a screw that is screwed into a screw hole 9 provided in the upright piece 8 of the back plate 4 from the through hole 11 of the back cover 5.

Reference numeral 13 denotes a plurality of ventilation holes formed in the horizontal plate 5a and each vertical plate 5b of the rear cover 5, and 14 denotes a flange formed on the inner peripheral surface of the front edge of the rear cover 5. The portions into which the respective upright pieces 8 are inserted are deleted.

In the above structure, when attaching the back cover 5 to the back plate 4 of the main body casing 1, first insert the projections 10 and 10 provided on the front edge of the vertical plate 5b of the back cover 5 into the elongated holes 7, 7 of the casing back plate 4. In this state, push the bar 5 onto the upright pieces 8.8 of the back plate 4, and insert the screws of the upright pieces 8, 8 through the through holes 11.11 provided in the upper part of the cover 5, respectively. The screws 12j2 are screwed into the holes 9,9.

Then, the cover 5 has the above-mentioned screws 12.12 and projections 10.
It is attached to the back plate 4 by engagement with the elongated holes 7, 7 of 10.

The rear cover 5 is normally attached as described above after the installation of the heater is completed.

In addition, when cleaning the space between the back plate 4 and the wall A or repairing or inspecting the inside of the casing 1 after installing the back cover 5, use a screwdriver or the like from the upper part of the back plate 4 to clean the space between the back plate 4 and wall A. The screws 12 are removed, and then the protrusions 10 of the cover 5 are removed from the elongated holes 10 of the back plate 4, and the back cover 5 is taken out from the space between the back plate 4 and the wall A.

Further, when attaching the cover 5, as described above, first insert the cover 5 from the above-described space, fit and lock each projection 10 into each elongated hole 7, and then insert each upright piece 8 from each through hole 11.
A screw 12 is inserted into each of the tapped holes 9.

As described above, the present invention provides an elongated hole in the back plate of the casing, and protrudes from the upper part of the upright piece with a threaded hole, while a vertical plate of the back cover has a protrusion that engages with the elongated hole. and a through hole corresponding to the screw hole is formed in the horizontal plate of the cover, and the protrusion of the cover is engaged with the elongated hole of the back plate, and the upright piece is inserted through the through hole of the cover. By inserting screws into the holes, the cover can be attached to and removed from the casing from above, so compared to the conventional method of attaching the cover using four screws by inserting one's hand inside the cover.
Anyone can easily attach the cover regardless of the size of the gap between the cover and the mounting wall or installation surface.

As a result, by removing the back cover during installation work, you can easily install the heating unit and the air supply/exhaust pipe without the cover getting in the way. It can be easily attached to the back, improving the overall workability of the installation work, and making it easy to complete the work.

Furthermore, services such as cleaning the back side of the heater and maintenance and inspection of the inside of the heater are made extremely easy, as the back cover can be easily attached and removed, and serviceability is improved, making it extremely convenient in practice.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an installed state of a warm air heater according to the present invention, FIG. 2 is an exploded perspective view of the heater, and FIG. 3 is a diagram showing a conventional example. 1...Casing, 2...Combustor, 4
... Back plate, 5 ... Back cover, 5a.
...Horizontal board, 5b...Vertical board, 6...
...Air supply and exhaust pipe, 7...Long hole, 8...
Upright piece, 9...screw hole, 10...protrusion, 11...through hole.

Claims (1)

[Scope of utility model registration request] A supply/exhaust tube 6 is provided protruding from the back plate 4 of the main body casing 1 containing the combustor 2, and a U-shaped rear cover 5 is provided on the back plate 4 that surrounds the top and side surfaces of the supply/exhaust tube 6 and has an open bottom surface. In the hot air heater, the back plate 4 of the main body casing 1 is provided with long holes 7 in the vertical direction near both ends in the left and right direction at an intermediate position in the vertical direction, and an outward screw hole 9 is provided in the upper part. The vertical plate 5b on the side surface of the U-shaped back cover 5 has the length
A retaining protrusion 10 that fits into the upper horizontal plate 5a is provided protrudingly to fit into the upper horizontal plate 5a.
A hot air heater characterized in that a through hole 11 corresponding to the screw hole 9 of the upright piece 8 is formed in the upright piece 8.