JPS5913556Y2 - gas water heater - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a heat exchanger that is connected to the rear outer shell at an upper part of the outer shell that is formed by removably attaching the front outer shell to the front opening of the rear outer shell. At the same time, a flashing mechanism (gas adjustment device, water volume adjustment device) is removably installed in the lower part of the outer shell, and a flashing mechanism (gas adjustment device, water volume adjustment device) is removably installed on the rear outer shell, and a flashing mechanism is installed between the heat exchanger and the flashing mechanism. The present invention relates to an improvement in a gas water heater in which a gas burner is detachably connected to the blinking mechanism.

Conventionally, in this type of gas water heater, the upper end of the gas burner faces the inside of the cylinder constituting the combustion chamber of the heat exchanger and is stacked vertically, and in order to remove the gas burner, the heat exchanger or flasher must be removed at the same time. The mechanism must be moved upwards or downwards to remove it, and the gas burner must be removed at the same time to remove the heat exchanger.

Therefore, when performing maintenance and inspection on this type of gas water heater,
Components that do not need to be removed often have to be removed, and their maintenance and inspection requires complicated removal and installation work.

The present invention was developed based on the above-mentioned circumstances, and its main purpose is to easily remove and install the gas burner, heat exchanger, and flashing mechanism independently of each other in this type of gas water heater, and to facilitate maintenance and inspection. It is an object of the present invention to provide a closed type gas water heater that is easy to work with and can be accurately and easily maintained airtight.The present invention will be explained below based on the drawings.

The drawing shows an example of a gas water heater according to the present invention.
Figure 1 shows the cutout side of the gas water heater, Figure 2 shows the outer shell of the gas water heater, and Figure 3 shows the internal components of the gas water heater. .

The gas water heater includes an outer shell 10, a heat exchanger 20 disposed above the inside of the outer shell 10, a blinking mechanism 30 disposed below inside the outer shell 10, and the heat exchanger 20 and the blinking mechanism 30. It is constituted by a gas burner 40 arranged between them.

Thus, the outer shell 10 is formed by a rear outer shell 11, and an upper front outer shell 12 and a lower front outer shell 13 that are removably attached to the front opening of the rear outer shell 11 and cover it. There is.

In addition, partition plates 14 and 15 are formed in the lower part of the rear shell 11 and the lower end of the upper front shell 12, and a front opening above the partition plate 14 in the rear shell 11 is formed. upper front shell 12 via seal members 16,17 to
is attached, and a lower front outer shell 13 is attached to the front opening below the partition plate 14.

As a result, a sealed storage chamber in which the heat exchanger 20 and gas burner 40 are arranged is formed above the partition plate 14.15 in the outer shell 10, and a flashing mechanism 30 is formed below the partition plate 14.15.
A storage chamber is formed in which the

Furthermore, semi-cylindrical portions 14 a and 15 a that constitute a through hole through which a gas conduit 42 of a gas burner 40 (to be described later) passes are formed substantially in the center of the ends of the bipolar cut plates 14 and 15 to face each other. Furthermore, a recess 14b into which a block gasket 53, which will be described later, is fitted is formed on the side of the end of the partition plate 14.

On the other hand, a surrounding plate 22 is fixed to the lower end opening of the cylindrical body 21 of the heat exchanger 20, which surrounds both left and right sides from the rear of the opening edge.

The lower left and right ends of the enveloping plate 22 are bent into a U-shaped cross section to form guide grooves 22a, and locking pieces 22b are punched inward at several locations on the sides thereof. is formed, and the surrounding plate 22 connects the lower end of the cylinder body 21 with a locking piece 22.
It is secured to the cylinder body 21 with screws while being held between the parts b.

Each guide groove portion 22a has a predetermined width in the vertical direction.

In this state, the heat exchanger 20 is configured such that the both-side mounting portions 23 a of the exhaust body 23 are screwed to the both-side upper mounting portions 11 a of the rear outer shell 11 and the both-side mounting portions 22 are fixed to the surrounding plate 22 .
C is screwed to the center mounting portions 11b on both sides of the rear outer shell 11, and is removably attached within the rear outer shell 11.

Prior to this, the rear mounting part 11 was attached to the rear outer shell 11.
C has a rear support frame 51 that has a U-shape in both the cross section and the longitudinal section.
is attached with screws, and this rear support frame 51
By fitting the surrounding plate 22 with the rear end of the guide groove 22a of the surrounding plate 22 partially overlapping the surrounding plate 22, the surrounding plate 22
The rear part and both rear side parts are hidden by a rear support frame 51.

The main body of the blinking mechanism 30 is removably attached to the bottom surface of the rear outer shell 11 of the bracket 14C1 provided on the lower surface of the partition plate 14 by screwing.

Further, one side 31 a of the water supply pipe 31 is screwed to a connecting block 52 fixed to the partition plate 14 and described later, and the other side 31 b is attached to a bottom mounting portion 11 d in the rear outer shell 11 .
It is fixed with screws.

As shown in FIG. 4, the connection block 52 connects the water supply passage P.
The block main body 52a and the tube portion 52b are made of a block body 52a and a tube portion 52b having a sealing member 52C. It is screwed to the lower surface of the partition plate 14.

Note that one end 24 a of the heat absorption tube 24 of the heat exchanger 20 is screwed onto the tube portion 52 b of the connecting block 52 .

Further, one end 32a of the hot water supply pipe 32 is passed through the through hole 11f of the partition plate 14 in an airtight manner, and the other end 32a of the heat absorption pipe 24 is connected to the other end 24 of the heat absorption pipe 24.
b, and the other end 32b of the hot water supply pipe 32 is screwed to the bottom mounting portion 11g.

Further, the tip 33a of the gas supply pipe 33 is attached to the bottom mounting portion 1.
It is screwed to 1h.

On the other hand, each piping wiring 34a to the ignition pilot device 34 attached to the front surface of the gas burner 40, which will be described later, passes through a block backing 53, which will be described later, which is fitted into a recess 14b of the partition plate 14 and secured with screws.

As shown in FIG. 5, this block packing 53 consists of a rubber cut packing 53a and a support member 53b that fits and supports the cut packing 53a.
has a hole 53C in the center thereof through which the flexible pilot conduit 34a passes, and a cut groove 53d for inserting the pilot conduit 34a into the hole 53C in the radial direction.

Thus, the split gasket 53a is fitted into the recess 14b of the partition plate 14 via the support member 53b and fixed with screws, and is compressed by the pressing force of the partition plate 15.
The abutment surface and surrounding surface are made airtight to maintain airtightness of the pilot conduit 34a.

In the figure, reference numeral 35 is a water cock shaft for temperature adjustment, reference numeral 36 is a gas capacity switching adjustment cock shaft, and reference numeral 37 is an ignition operating shaft.

The gas burner 40 consists of a burner body 41 and a gas conduit 42 for supplying gas to each nozzle of the burner main body 41. One end of the gas conduit 42 is connected to a nozzle fixed to the lower surface of the burner body 41 with screws. The burner body 41 is connected to the pipe and the other end is screwed to the gas supply section of the blinking mechanism 30 at a flange portion 42a, whereby the burner body 41 is detachably attached.

Further, flat flange portions 41a are formed on the upper end edge of the burner main body 41 on both left and right sides thereof and project outward.

This flange portion 41a is connected to the surrounding plate 22 of the heat exchanger 20.
It is formed in a size that allows it to be inserted into and removed from the front surface of a pair of guide groove portions 22a provided in the guide groove portions 22a.

Thereby, the gas burner 40 has its flange portion 41 a
is inserted into the guide groove 22a of the surrounding plate 22 to connect the heat exchanger 2.
It can be installed in a suspended state at the lower end of the 0.

In addition, a pilot device 34 is provided on the front of the burner main body 41.
A front support frame 43 having a U-shaped cross section and bent into an L-shape is fixed to the opposite side of the mounting portion with screws.

As a result, when the gas burner 40 is attached to the heat exchanger 20, substantially the entire circumference of the attachment portion between the gas burner 40 and the heat exchanger 20, except for the attachment portion of the ignition pilot device 34, is the rear support frame 51. It is hidden by the surrounding plate 22 and the front support frame 43.

The gas conduit 42 is airtightly sandwiched between the half-cylindrical portion 14a of the partition plate 14 and the semi-cylindrical gasket 54b formed on the sealing member 17 via the semi-cylindrical gasket 54a. .

In the gas water heater, a heat exchanger 20, a flashing mechanism 3
0 and gas burner 40 in the rear shell 11 as described above.
After installing it inside, insert the upper and lower front outer shells 12 into its front opening.
．． 13 completes the assembly.

The upper front shell 12 is airtightly attached to the rear shell 11 via sealing members 16.17, and the gas conduit 42 of the gas burner 40 is connected to bicylindrical tubes 54a, 54b.
The upper part of the partition plate 14.15 inside the outer shell 10 is sealed by being airtightly sandwiched between the two partition plates 14.15 via the outer shell 10, the heat exchanger 20, and the gas burner 40.
A combustion air passage P2 is formed between them.

The air supplied through this passage P2 is supplied from below the burner body 41 of the gas burner 40 to the burner flame around and above the flame nozzle.

In the gas water heater configured in this manner, the flange portions 41 a provided on both left and right sides of the upper end of the gas burner 40 are arranged in the guide groove portions 22 a provided on both left and right sides of the lower end of the heat exchanger 20.
The gas burner 4 can be inserted and removed in a loosely fitted state.
0 is disposed at the lower end of the heat exchanger 20 and connected to the flashing mechanism 30, so that the heat exchanger 20, the flashing mechanism 30, and the gas burner 40 can be independently removed when performing maintenance and inspection.

As a result, the work of removing and attaching components that do not need to be removed during maintenance and inspection work is eliminated, and the maintenance and inspection work is facilitated.

In addition, in this water heater, the gas conduit 42 of the gas burner 40 is airtightly sandwiched between the two partition plates 14 and 15 via the amphibious cylindrical gaskets 54a and 54b, so that The installation is precise and easy to maintain airtightness.
In addition, the flange portion 42a and the main body of the blinking mechanism 30 can be easily connected.

In this embodiment, in particular, substantially the entire circumference of the attachment portion between the heat exchanger 20 and the gas burner 40 is covered with the front support frame 43 and the surrounding plate 2.
2 and the rear support frame 51 to prevent air from flowing into the gas burner 40 from the sides between the mounting parts, the air flowing in from below is not interfered with and flows into the gas burner 40 in a rectified state. and maintains good combustion conditions.

In this embodiment, an example in which the guide groove portion 22 a is formed in the enveloping plate 22 attached to the cylinder body 21 of the heat exchanger 20 is shown, but in the present invention, the guide groove portion 22 a is
a may be formed integrally with the lower end of the barrel 21.

As is clear from the above description, in the present invention, the heat exchanger is installed in the upper part of the outer shell formed by removably attaching the front outer shell to the front opening of the rear outer shell. At the same time as being removably attached to the shell, a flashing mechanism is removably attached to the rear outer shell at the lower part of the outer shell, and the flashing mechanism is removably attached between the heat exchanger and the flashing mechanism. In the gas water heater, flat flange portions are provided on both left and right sides of the upper end portion of the gas burner, and flange portions of the gas burner are provided on both left and right sides of the lower end portion of the heat exchanger. A guide groove portion having a predetermined width in the vertical direction is provided that can be inserted from the front, and the flange portion of the gas burner is inserted into the guide groove portion of the heat exchanger in a loosely fitted state, so that the gas burner is disposed at the lower end portion of the heat exchanger. and partition plates extending horizontally and facing each other are provided inside the rear and front side outer shells, and a part of the flashing mechanism is removably attached to the partition plates of the rear outer shell. The gist of the gas water heater is characterized in that a gas conduit connected to the flashing mechanism of the gas burner is airtightly sandwiched between the partition plates.

Therefore, according to the present invention, the heat exchanger, the flashing mechanism, and the gas burner can be independently removed and installed in the front and rear directions, and the airtightness can be properly and easily maintained. This makes maintenance and inspection work for a type gas water heater extremely easy.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an example of a gas water heater according to the present invention, Fig. 2 is a perspective view showing constituent members of the outer shell of the gas water heater, and Fig. 3 is a side view showing an example of the gas water heater according to the present invention. FIG. 4 is a perspective view showing the internal components of the vessel; FIG. 4 is a vertical cross-sectional view showing the connecting block;
The figure is a perspective view showing the block packing. Explanation of symbols 10... Outer shell, 11...
Rear shell, 12゜13...Front shell, 14.1
5... Partition plate, 14 a, 15 a...
...Half cylinder part, 16.17... Seal member, 20
... Heat exchanger, 22 a ... Guide groove section, 30 ... Flashing mechanism, 40 ... Gas burner, 41 ... Burner body, 41 a...
... Flange part, 42 ... Gas conduit, 54 a
, 54 b... Semi-cylindrical packing.

Claims (1)

[Scope of utility model registration request] A heat exchanger is removably attached to the rear outer shell at the upper part of the outer shell formed by removably attaching the front outer shell to the front opening of the rear outer shell. In a gas water heater, a flashing mechanism is removably attached to the rear shell at the lower part, and a gas burner removably connected to the flashing mechanism is arranged between the heat exchanger and the flashing mechanism. , a flat plate-shaped 7 run part is provided on both left and right sides of the upper end of the gas burner, and a guide having a predetermined width in the vertical direction through which the 7 run part of the gas burner can be inserted from the front is provided on both left and right sides of the lower end of the heat exchanger. A groove is provided, the flange of the gas burner is loosely inserted into the guide groove of the heat exchanger, and the gas burner is disposed at the lower end of the heat exchanger, and both of the rear and front outer shells are provided with a groove. partition plates extending horizontally and facing each other are provided on the inside, a part of the flashing mechanism is removably attached to the partition plate of the rear outer shell, and a gas conduit is connected to the flashing mechanism of the gas burner. A gas water heater characterized in that the gas water heater is airtightly sandwiched between the side partition plates.