JPH0129482Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a model water heater that can be effectively installed in high-rise apartment buildings.

[Conventional technology]

In places where indoor space is narrow, such as in high-rise apartment buildings, it is desirable to install the water heater horizontally using a hole in the wall. As indicated in the official gazette, the main body, mechanical parts, connecting parts, electrical components, etc. of the water heater are all mounted on a pedestal, and the interior parts are attached to and removed from the casing using the pedestal. A device has been proposed that is convenient for mounting on a case, as well as for maintenance, inspection, repair, etc.

[Problem that the invention attempts to solve]

In the above-mentioned conventional water heater, the flange for mounting on the outer wall of the casing is screwed to the metal frame, and the front cover is fixed to a screen attached to the pedestal. Since the joint between the mounting flange and the front cover is not airtight, the combustion performance of this type of forced air water heater, in which it is important to maintain airtightness inside the casing, is significantly degraded. In addition, since the base of the end connection part of the mount protrudes from the casing, it is necessary to bulge the lower part of the front cover toward the front, which requires a great deal of effort and expense. There is no barrier separating the air into the air supply side and the exhaust side, which makes it difficult to maintain airtightness at the joints, and there is also the risk of combustion exhaust gas getting mixed into the air supply and leaking into the room. There was a problem.

This idea is designed to make the outer shell and internal structure removable, and it is easy and reliable to assemble the inner structure to the outer shell, and the sealing property of the proximal joint between the outer shell and the internal structure is improved. The present invention provides a water heater for the purpose of maintaining airtightness inside the outer shell by improving the temperature.

[Means for solving the problem] In order to solve the above problem, this invention has a combustion chamber,
In a water heater in which an internal structure in which a functional part such as a heat exchanger is integrated is removably provided while maintaining a certain relative position, a trapezoidal notch recess is provided in the bottom plate of the proximal opening of the outer body. An upright piece is erected at the edge of the notched recess, and a vertical wall having a similar shape to the upright piece is provided at the base end of the base plate which is integrally connected to the combustion chamber of the internal structure. an engaging convex portion having an engaging convex portion, and a joint portion in which the vertical wall of the engaging convex portion and the upright piece of the notch recess can come into contact with each other with a packing sandwiched therebetween;
Furthermore, a technical measure has been adopted in which the trapezoidal bottom of the engagement convex portion of the joint portion is used as a pipe connection portion.

[Effect]

When the internal structure is inserted into the mounting hole of the mounting wall from the side and inserted into the outer shell, which has been previously installed and fixed, from the base end opening and pushed into the predetermined position, the cut on the outer shell side is inserted. Since the engaging convex part on the internal structure side fits into the notch recess and the vertical wall of the engaging convex part is joined to the upright piece through packing, manufacturing errors etc. may occur in the trapezoidal part of the upright piece and the vertical wall. Even if there is a problem, the packing absorbs it and presses it airtight, improving the sealing performance of the proximal joint between the outer shell and the inner structure. In addition, since the shape of the joint consisting of the upright piece and the vertical wall is trapezoidal, the piping joint of the engaging protrusion can be accommodated within the outer shell, and the internal structure can be positioned and assembled with respect to the outer shell. This can be done accurately and easily due to the uneven shape of the joint, the supporting legs, etc.

〔Example〕

An embodiment of the water heater according to this invention will be described below with reference to the drawings. The outer shell A is formed into a rectangular tube shape with the base end open and the tip closed, and the bottom plate of the base end opening 3 of the outer shell A. 3a is provided with a trapezoidal notch recess 4, and both side plates 3b near the corners of the tip are provided with an exhaust port 10 formed by drilling a plurality of long holes in a row,
An air supply port 9 formed by parallelly perforating a plurality of long holes is provided in the bottom plate 3a closer to the proximal end than the exhaust port 10.
is formed apart from the exhaust port 10, engaging pieces 23 are provided protruding from both sides of the inner surface of the proximal end, and a series of partition plates 20 are provided protruding from the inner periphery of the distal end.

The above-mentioned outer shell A has a mounting hole 11 drilled in the mounting wall C.
The base end opening 3 is inserted horizontally into the room E side, and the room E and the outdoor room F are airtightly sealed by a mounting and fixing part D, which will be described later, and are mounted and fixed.
The internal structure B of the water heater includes a combustion chamber 1 consisting of an inner cylinder 12 and an outer cylinder 13, a heat exchanger provided at the tip of the combustion chamber 1, and a heat exchanger installed near the base end inside the inner cylinder 12 of the combustion chamber 1. The burner 4 that is attached to the combustion chamber 1, the flasher 16 installed on the base plate 6 that is connected to the lower part of the base end of the combustion chamber 1, the electrical equipment box 17, and the ventilation space between the inner cylinder 12 and the outer cylinder 13 of the combustion chamber 1. It consists of various functional parts such as an air supply fan 15 which is connected to the discharge port 15a and installed on one side of the upper side of the base plate 6 via an arbitrary attachment means, and these functional parts are integrated. There is. A series of partition plates 21 that overlap with the partition plates 20 of the outer shell A are protruded from the outer periphery of the heat exchanger 2. The base plate 6 has a bottom plate 3a of the outer body A on both sides.
It is formed of a frame body having a cross-section shaped like a square on which support legs 19 that slide on the top are integrally provided at intervals approximately corresponding to the inner width of the outer body A, and has a notch hole 6a in the center of the top plate. , the base end is integrally provided with an engagement protrusion 7 having a shape corresponding to the notch recess 4 of the outer body A, and the engagement protrusion 7
A piping connection part 18 is provided at the bottom of the combustion chamber 1, and a stopper piece 24 is provided protruding from both sides of the base plate. The base plate 6 and the combustion chamber 1 are connected to each other as one unit, and the support legs 19' are attached to the support portion 19 of the base plate 6 at the bottom of both sides of the outer surface of the outer cylinder 13 of the combustion chamber 1. They are provided with the same spacing.

Thus, the internal structure B is inserted into the outer shell A through the base opening 3 thereof, and the support leg 19 of the base plate 6 of the inner structure B and the tip support leg 19' of the combustion chamber 1 are inserted into the bottom plate of the outer shell A. 3a, and slide it on the bottom plate 3a and push it in to the specified position.Insertion of the internal structure B into the outer shell A and left/right (axial direction) positioning can be done accurately using the support legs 19, 19'. Moreover, it can be easily carried out, and the partition plate 20 on the side of the outer shell A and the partition plate 21 on the side of the internal structure B are pressed against each other with the sealing material 22 in between to create a shielding wall and prevent air from being supplied to the inside of the outer shell A. At the same time, the stopper piece 24 provided on the base plate 6 of the internal structure B comes into contact with the engaging piece 23 protruding from both sides of the inner surface of the proximal end of the outer body A. By fixing the stopper piece 24 with the setscrew 25, the front and rear (longitudinal direction) positioning of the internal structure B with respect to the outer shell A can be accurately and easily performed together with the positioning by the base end joint described later. At the same time, the internal structure B is fixed against the outer shell A while holding the inner structure B so that it does not escape from the outer shell A.
can be installed internally while maintaining a certain relative position.

Further, reference numeral 5 denotes a rising piece integrally provided at the upper part of the edge of the notch recess 4 of the outer body A, and an engagement protrusion formed at the base end of the base plate 6 of the internal structure B. The vertical wall 7a of the portion 7 is made to have a similar shape corresponding to the rising piece 5, and when the engaging convex portion 7 is fitted into the notch recess 4, the vertical wall 7a is brought into contact with the inner surface of the rising piece 5. That's what I do. Reference numeral 8 denotes a packing interposed between the abutting surface of the upright piece 5 and the vertical wall 7a of the engaging convex portion 7, and this packing 8 is attached to either the upright piece 5 or the vertical wall 7a of the engaging convex portion 7. It is best to attach it to the contact surface in advance. Furthermore, the engagement convex portion 7
A pipe insertion hole 18a is bored in the bottom of the trapezoid, and the bottom is used as a pipe connection part 18.

The mounting fixing part D has a mounting flange 26 fixed to the outer shell 1 so that its mounting position can be changed depending on the wall thickness, etc., to a mounting bolt 28 fixed to the mounting wall C via an angle member 27. The double sealing material 29, 33 to airtightly seal the indoor E and outdoor F, and attach the outer shell A to the mounting hole 11 drilled in the mounting wall C.
can be inserted horizontally and fixed. Further, the base end opening 3 of the outer shell A has a mounting flange 3 in which a flat plate-like lid 34 is formed on the base end opening edge of the outer shell A and the base end of the piping connection portion 18 of the engagement convex portion 7.
A sealing material 35 is interposed and adhered between c and 18b and the outer peripheral edge of the lid 34, thereby shielding the interior of the interior E and the inside of the outer shell A. 36 is a front cover, and the engaging hooks 37, 37' provided on the top and bottom of the inner surface are connected to the outer body A.
The peripheral convex portion 38 of the lid 34 attached to the base end opening 3 of
It can be attached and detached freely by engaging and detaching it. 39 is a water supply connection pipe, 40 is a gas connection pipe, and 41 is a hot water supply connection pipe; these connection pipes 39,
40 and 41 are inserted into the insertion hole 18a of the pipe connection portion 18 at the trapezoidal bottom of the tip engaging convex portion 7 of the base plate 6, and are connected and fixed.

[Effect of the invention] In the water heater of this invention, the internal structure is inserted linearly from the base end opening into the outer shell, which is fixed in advance to the mounting hole of the mounting wall by the mounting fixing part. Then, the engagement protrusion provided on the base plate of the internal structure will fit into the notch recess provided in the bottom plate of the base end opening of the outer body, and the upright piece installed on the edge of the notch recess will fit. The vertical walls of the engaging protrusion are pressed against each other through the packing, and the shape of the joint surfaces is similar trapezoidal unevenness, so the seal at the joint can absorb manufacturing errors of the trapezoidal part due to packing. This is done reliably and the airtightness inside the outer shell can be maintained. At this time, depending on the division of the air supply side and exhaust side in the outer shell by the partition plate and sealing material, the uneven shape of the joint, the relationship between the outer shell and the support legs, the contact between the locking piece and the stopper piece, etc. Therefore, the insertion and assembly of the internal structure into the outer shell, the evacuation and separation, and the positioning during assembly can be performed accurately and easily.

In addition, the trapezoidal bottom of the engagement protrusion allows for the insertion and fixation of water supply connection pipes, gas connection pipes, hot water supply connection pipes, etc., making it convenient for connecting piping to the hot water supply function section and piping connections from outside. In addition, since the piping connection part is housed within the outer shell and is not exposed to the outside, the lid of the proximal opening of the outer shell can be made into a simple flat plate shape, so the shape of the lid can be simplified. Moreover, since the shape of the mounting flange on the outer shell side can be simplified, it is not only easier to manufacture and lower costs, but also the device can be made smaller, and the proximal opening of the outer shell can be airtight. Retention can also be achieved reliably.

Therefore, in forced air water heaters that require airtightness within the outer shell, especially the proximal joint between the outer shell and the internal structure, which has traditionally been a bottleneck,
It can maintain airtight joints at piping connections, and because it is small and horizontal, it has high practical value when applied to water heaters that are installed using wall holes in high-rise apartment buildings, for example. It is.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional side view showing one embodiment of the water heater according to this invention, Fig. 2 is a cross-sectional plan view, Fig. 3 is an isolated plan view of only the main parts, and Fig. 4 is the outer shell and internal structure. FIG. 2 is an overall perspective view with parts separated. A... Outer shell, B... Internal structure, 1... Combustion chamber, 2... Heat exchanger, 3... Base end opening, 4...
Notch recess, 5... Standing piece, 6... Base plate, 7...
...Engaging convex portion, 8... Packing, 18... Piping connection part.

Claims (1)

[Scope of utility model registration request] Outer cylinder A inserted and fixed from the side into the mounting hole 11 of wall C
In a water heater in which an internal structure B in which functional parts such as a combustion chamber 1 and a heat exchanger 2 are integrated is removably provided while maintaining a certain relationship, the bottom plate of the proximal opening 3 of the outer shell A. A trapezoidal notched recess 4 is provided in the base plate 6, a raised piece 5 is provided on the edge of the notched recess 4, and the base plate 6 is integrally connected to the combustion chamber 1 of the internal structure B. An engaging convex portion 7 having a vertical wall having a similar shape to the raised piece 5 is provided at the end, and the vertical wall of the engaging convex portion 7 and the raised piece 5 of the notch recess 4 are interposed with a packing 8 in between. Providing a joint that can be brought into contact with
Furthermore, the water heater is characterized in that the trapezoidal bottom part of the engagement convex part 7 of the joint part is used as a pipe connection part 18.