JP2006207957A - Manifold device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve castability and workability by simplifying structure of a whole, and to miniaturize a facility in a manifold device provided with a manifold body formed with a gas passage and a plurality of nozzles jetting out gas of the gas passage, and opening and closing valves capable of opening and closing the gas passage. <P>SOLUTION: Valve seat parts 14a-14d of the opening and closing valves 4a-4d are formed on one face 10a of the manifold body 10, and the opening and closing valves 4a-4d are attached to a case body 11 provided as a separate member from the manifold body 10 which can be joined to the manifold body 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a manifold device, and more particularly to a gas supply manifold device provided with a plurality of nozzles for supplying gas to each of gas burners incorporated in a hot water supply device or the like.

As a combustion device for a heat exchanger built in a hot water supply device or the like, generally, a burner unit (30) in which a plurality of flat gas burners (3) are arranged side by side as shown in FIG. 7 is used. A gas supply manifold device (20) including a plurality of nozzles (2) for supplying gas to each gas introduction port (32) of (3) is attached.
The gas supplied from the gas supply port (31) is a gas passage (15 in the manifold body (1) of the manifold device (20) as shown in FIG. 8 showing a state in which the back cover (23) is removed. ) To the nozzles (2), and gas is ejected from the nozzles (2) toward the gas inlets (32) of the gas burners (3).
The manifold device (20) is provided with an on-off valve (4) for opening and closing the gas passage, and a case body (22) to which the on-off valve (4) is attached is integrated with the manifold body (21). Provided.
Japanese Patent Laid-Open No. 8-86416

In the conventional manifold device (20), as described above, the case body (22) for attaching the gas passage (15), the nozzle (2), and the on-off valve (4) to the manifold body (21) is integrated. Therefore, there is a problem that the overall shape of the manifold device (20) is complicated, the castability is poor, and the defective product generation rate is high. Further, since the valve seat portion (41) of the on-off valve (4) is formed inside the case body (22), it is difficult to process the valve seat portion (41) to a smooth surface. . Furthermore, in recent years, as the capacity of the hot water supply device has increased, the manifold device (20) has also been increasing in size, and in order to produce a large manifold device (20), a large die-casting device is required. There is also a problem that the cost of investment is enormous.
The present invention has been made in view of such a point, and includes: “a manifold body in which a gas passage and a plurality of nozzles for ejecting gas in the gas passage are formed; and an on-off valve capable of opening and closing the gas passage. An object of the present invention is to improve the castability and workability by simplifying the entire structure of the manifold device provided, and to realize downsizing of the equipment.

(1) The manifold device of the invention according to claim 1 is: "On one surface of the manifold body, the valve seat portion of the on-off valve is formed,
The on-off valve is provided separately from the manifold body and is attached to a case body that can be joined to the manifold body.
The technical means operates as follows.
The case body for supporting the on-off valve is manufactured separately from the manifold body, and the manifold body may be configured to include a gas passage, a nozzle, and a valve seat portion. Any structure that can support the on-off valve may be used, and each structure is simplified. Further, since the valve seat portion is formed so as to be exposed on the one surface of the manifold body, the valve seat portion can be finished into a smooth surface before joining the case body. Further, since the manifold main body and the case body are manufactured separately, the die casting equipment may be small. When the manifold body and the case body manufactured separately are joined so that the on-off valve of the case body corresponds to the valve seat portion of the manifold body, the manifold device is completed.

(2) The manifold device of the invention according to claim 2 is the invention according to claim 1, wherein “the ridge that surrounds the valve seat portion is formed on the surface of the manifold body on which the valve seat portion is provided. It is characterized in that it protrudes higher than the valve seat part '', and an external impact may be applied to one surface on which the valve seat part is provided during transportation or cleaning of the manifold body. However, the impact is received by the ridge, and the valve seat is protected.

(3) A manifold device according to a third aspect of the present invention is the manifold device according to any one of the above inventions, wherein the case body has a gas introduction passage communicating with a gas supply port, and a branch end on both sides of the downstream end of the gas introduction passage. Two branch passages are provided,
The on-off valve is disposed in each of the branch passages,
The manifold body includes a valve seat portion of an on-off valve disposed in one of the branch passages, a first plate in which a gas passage and a nozzle communicating with the valve seat portion are formed, and an on-off valve disposed in the other branch passage. And a gas passage communicating therewith and a second plate having a nozzle formed thereon, and the gas sent from one gas supply port passes through the gas introduction passage, At the downstream end, the gas flows into two branch passages provided on both sides thereof, flows out to the gas passage of the first plate or the gas passage of the second plate via the on-off valve, and is ejected from each nozzle. Go. If these first and second plates are made to correspond to two different combustion devices, gas can be supplied to two combustion devices with one manifold device.

As described above, according to the first aspect of the present invention, since the structure of the manifold body is simple, casting becomes easy and castability is improved. In addition, the valve seat portion can be easily processed and the valve seat portion can be finished before being joined to the case body, so that the incidence of defective products is reduced. Therefore, useless expenses can be reduced and costs can be reduced. Further, since the die casting apparatus can be miniaturized, even when a large manifold apparatus having a high hot water supply capacity is required, it can be manufactured with conventional equipment.
According to the invention which concerns on Claim 2, a valve seat part will be protected from an external impact by providing a protruding item | line, and the gas leak by damage to a valve seat part can be prevented.
Further, according to the invention according to claim 3, for example, even in an appliance in which two combustion devices each having a manifold body are mounted, such as a hot water bath with a hot water supply function, one manifold device is used. Therefore, the structure of the entire hot water supply apparatus can be simplified and the size can be reduced as compared with the conventional apparatus in which a manifold apparatus has to be prepared for each. In addition, by replacing the first and second plates with plates of other sizes, it is possible to cope with various combustion devices with different capacities while making the case body a common component, and propose a user-friendly manifold device. can do.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic explanatory view of a manifold device for supplying gas to a combustion device mounted on a hot water supply device, and FIG. 2 is an exploded perspective view thereof.
The gas burner (G) as a combustion device is a flat burner as shown in the conventional example, and is a so-called light and dark burner in which a pair of upper and lower gas inlets (33) and (34) are open. The flow path following the lower inlet (34) is a light gas flow path (34a) through which the air-rich mixture flows, and the flow path following the upper inlet (33) is a concentrated gas flow path through which the gas-rich mixture flows. (33a).
A manifold device (1) is provided, and each of the upper and lower two-stage nozzles (2a) (2b) is opposed to each inlet (33) (34), and each inlet (33) (34) The primary combustion air is sucked by the ejector effect together with the fuel gas ejected from the nozzles (2a) and (2b).
The manifold device (1) includes a manifold main body (10) having a plurality of the nozzles (2a) and (2b) groups, and the manifold main body (10) as a separate body and an on-off valve (4a) to The case body (11) for attaching (4d), and the gas introduction passage (35) communicating with the gas supply port (31) is provided in the case body (11).

The case body (11) is substantially configured to include the gas introduction passage (35) and two branch passages (36) and (37) branched right and left at the downstream end of the gas introduction passage (35). It is formed in a T-shape, and three attachment cylinders (36a) (36b) (36c) to which three on-off valves (4a) (4b) (4c) are attached are provided in one of the branch passages (36). In the other branch passage (37), one mounting cylinder (37a) to which one on-off valve (4d) is attached is formed. Then, the case body (11) is mounted so that these mounting cylinders (36a) (36b) (36c) and (37a) correspond to the through holes (12a) to (12d) provided in the manifold body (10), respectively. Join the manifold body (10) with screws.
Peripheries of the passage holes (12a) to (12d) are valve seat portions (14a) to (14d) of the on-off valves (4a) to (4d), and the valve seat portions (14a) (14b) A protruding line (40a) is provided so as to surround (14c), and a protruding line (40b) is also provided so as to surround the valve seat part (14d).

The manifold body (10) includes a plate surface (10a) on which the nozzles (2a) and (2b) protrude and valve seat portions (14a) to (14d) and ridges (40a) and (40b) are formed. The frame portion (10b) integrally connected to the back surface of the plate surface (10a) and the cover plate (13) for closing the rear open end of the frame portion (10b) are formed hollow. As shown in FIG. 3, a plurality of gas passages (15a) to (15d) are formed in the hollow portion, and these gas passages (15a) to (15d) communicate with the nozzles (2a) and (2b). is doing.
As a result, the fuel gas introduced from the gas supply port (31) flows through the gas introduction passage (35) into the branch passages (36) and (37), and flows into the on-off valves (4a) to (4d). When the valve is open, it flows into the gas passages (15a) to (15d) through the valve seats (14a) to (14d) and communicates with each of the gas passages (15a) to (15d). Gas is ejected from the nozzles (2a) and (2b) to the gas inlets (33) and (34) of the gas burner (G).

Since both the manifold body (10) and the case body (11) are configured to be cast separately by die casting, a small die casting apparatus is sufficient for casting each of them, and a large facility with a small facility is required. The manifold device (1) can be manufactured.
In addition, the manifold body (10) has a simple configuration that does not include an on-off valve mounting portion or a gas introduction passage, and the valve seat portions (14a) to (14d) are exposed on the plate surface (10a). Accordingly, the finishing of the valve seat portions (14a) to (14d) is also facilitated. Therefore, castability and workability are improved, and the defective product occurrence rate is reduced. When the cover plate (13) is attached to the open portion of the frame portion (10b) and the cover plate (38) is attached to the gas introduction passage (35), the manifold body (10) and the case body (11) are completed. If the on-off valves (4a) to (4d) are attached to the mounting cylinders (36a) to (36c) and (37a) and the case body (11) is joined to the manifold body (10) with screws, the manifold The device (1) is completed.
Even when an external impact is applied to the plate surface (10a) during transportation or cleaning of the manifold body (10), the ridges (40a) (40a) around the valve seat portions (14a) to (14d) 40b) overhangs, the external impact is received by these ridges (40a) and (40b), and the direct impact on the valve seats (14a) to (14d) is mitigated, and the valve The inconvenience that the seats (14a) to (14d) are damaged and cause gas leakage is prevented.

FIG. 4 is an exploded perspective view of the manifold device (1) of the second embodiment.
In this case, the case body (11) is the same as the one adopted in the first embodiment, and the manifold body (10) is provided with valve seats (14a) to (14c). The first plate (101) and the second plate (102) provided with the valve seat (14d) are divided.
By dividing the manifold body (10) into the first plate (101) and the second plate (102), the gas that has passed through the gas introduction passage (35) flows from the upstream end to the first plate (101). Between the first plate (101) and the second plate (102), a closing plate (5) is provided in a bridging state so as not to leak between the first plate and the second plate (102). . The closing plate (5) can be easily provided integrally with the case body (11) when the case body (11) is cast.

In this embodiment, on the side where the first plate (101) is provided, the on-off valves (4a) to (4c) of the case body (11) pass through the first plate (101) as shown in FIG. Gas passages (15a) provided independently through the passage holes (12a) to (12c), corresponding to the valve seats (14a) to (14c) of the holes (12a) to (12c) It communicates with ~ (15c). On the side where the second plate (102) is provided, the valve seat (14d) of the passage hole (12d) of the second plate (102) is made to correspond to the on-off valve (4d) of the case body (11), The gas passage (15d) communicates with the passage hole (12d).
These gas passages (15a) to (15d) communicate with the plurality of nozzles (2a) and (2b), respectively.If all the on-off valves (4a) to (4d) are opened, all the gas passages (15a ) To (15d), gas can be ejected from all the nozzles (2a) and (2b). Further, by partially opening the on-off valves (4a) to (4d), the gas passages (15a) to (15d) can be partially opened, and gas can be discharged from a part of the nozzles (2a) and (2b). Can be ejected. In this way, the capacity of the manifold device (1) can be determined variously according to the number of combustion devices and the hot water supply capacity.

In this embodiment, for example, even when it is necessary to mount two separate combustion devices such as a hot water bath with a hot water supply or a heat source for a hot water heater, a single gas supply port (31) is provided. One manifold device (1) can be used. That is, it is not necessary to prepare two manifold devices, and the overall size of the hot water supply device can be prevented.
Further, in the second embodiment, the first plate (101) or the second plate (102) is replaced with another plate having a different number of gas passages, nozzles, and the like, thereby allowing combustion with various capacities. Can be a device.
In the above embodiment, the gas burner employs a density burner in which the gas inlets (33) and (34) are arranged in two upper and lower rows, and the nozzles (2a) and (2b) of the manifold device (1) are arranged in two upper and lower stages. However, a gas burner of a type that burns a single type of air-fuel mixture with a single line of gas inlets may be cast so that only one stage of nozzle is formed.
Further, as the gas introduction passage (35), a cylindrical pipe (16) as shown in FIG. 6 may be screwed to a predetermined portion of the case body (11).

The schematic explanatory drawing of the manifold apparatus of 1st Embodiment. The disassembled perspective view of the manifold apparatus of 1st Embodiment. Explanatory drawing of the manifold main body of the state which removed the cover board of the manifold apparatus of 1st Embodiment. The disassembled perspective view of the manifold apparatus of 2nd Embodiment. The cross-sectional view of the manifold device of the second embodiment. Explanatory drawing of the case body of other embodiment. The perspective view of the conventional manifold apparatus. Explanatory drawing of the state which removed the back cover of the conventional manifold apparatus.

Explanation of symbols

・ ・ ・ ・ ・ ・ ・ Manifold device
(10) ... Manifold body
(11) ... Case body
(14a)-(14d) ... Valve seat
(15a)-(15d) ・ ・ ・ Gas passage
(2a) (2b) ・ ・ ・ ・ ・ Nozzle
(4a) to (4d) ... Open / close valve

Claims (3)

In a manifold apparatus comprising a manifold body in which a gas passage and a plurality of nozzles for ejecting gas in the gas passage are formed, and an on-off valve capable of opening and closing the gas passage,
Forming a valve seat portion of the on-off valve on one surface of the manifold body;
The manifold device, wherein the on-off valve is provided separately from the manifold body and is attached to a case body that can be joined to the manifold body.   The manifold device according to claim 1, wherein a protrusion that surrounds the valve seat portion is protruded higher than the valve seat portion on a surface of the manifold body on which the valve seat portion is provided. Manifold equipment to be used. 3. The manifold device according to claim 1, wherein the case body is provided with a gas introduction passage communicating with a gas supply port and two branch passages branched on both sides at a downstream end of the gas introduction passage. ,
The on-off valve is disposed in each of the branch passages,
The manifold body includes a valve seat portion of an on-off valve disposed in one of the branch passages, a first plate in which a gas passage and a nozzle communicating with the valve seat portion are formed, and an on-off valve disposed in the other branch passage. And a second plate in which a gas passage and a nozzle communicating therewith are formed.

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