JPH0350360Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a direct-contact hot water heater with a burner attached sideways, in which a burner is installed horizontally on the side of the combustion chamber of the direct-contact hot water heater. The present invention relates to a direct-contact type hot water heater with a burner attached next to it, which can prevent an auxiliary combustion tube that attaches the burner to the heater main body from being heated and burned out by the flame injected from the burner.

[Conventional technology]

Conventionally, a combustion chamber is provided above a hot water storage section provided at the lowest part, an endothermic chamber filled with an endothermic material is provided above the combustion chamber, and a Direct contact with a structure in which the water that is sprinkled and falls onto the heat absorbing material and the combustion gas of the fuel combusted in the combustion chamber are brought into direct contact to obtain hot water at a desired temperature in the hot water storage section at the bottom. The technical philosophy regarding hot water heaters was published in 15983.
No. 39-10965, etc.

Such direct contact type hot water heaters have a structure in which the water to be heated comes into direct contact with the combustion gas as it flows from the heat absorption chamber above the combustion chamber to the hot water storage section below, resulting in extremely high thermal efficiency. Unlike conventional boilers that heat water in a sealed container, it heats water under atmospheric pressure, so it can be easily used at home, and the hot water obtained is free from dissolved water contained in it. It is hot water that has been degassed of oxygen and is good for rust prevention, and it also incorporates carbon dioxide contained in combustion gas, so when used for bathing, it can be used to relieve fatigue.You can heat normal tap water as it is in a bath pot. It has effects that hot water does not have, and its uses are expected to be quite wide.

[Problem that the invention attempts to solve]

However, such a direct contact type hot water heater has an endothermic chamber filled with an endothermic material provided above a combustion chamber provided above a hot water storage section provided at the bottom. Water that falls from above the heat absorption chamber onto the heat absorption material is brought into direct contact with the combustion gas of the fuel combusted in the combustion chamber to obtain hot water at a desired temperature in the hot water storage section at the bottom. Due to the structure of the heater, there is a risk that water droplets may fall from the heat absorption chamber into the combustion chamber and cause the burner to become wet with moisture. There is a problem that the flame injected from the burner overheats and burns out the auxiliary combustion tube that attaches the burner to the heater body, and if the auxiliary combustion tube is lined with fireproof insulation material, there is a problem that the fireproof insulation material may fall off. It was hot.

One possible solution to this problem is to eliminate the auxiliary combustion tube or to extremely shorten its length. There was a problem that this method could not be used in cases where the burner had to be removed frequently for repairs or where the flame emitted from the burner was long.

[Means for Solving the Problems] The present inventors have developed a direct contact type hot water heater with a burner attached sideways, in which a burner is installed horizontally on the side of the direct contact type hot water heater via an auxiliary combustion tube. As a result of intensive research, in order to prevent the auxiliary combustion tube from being overheated and burnt out, and to solve the problems of the conventional direct contact type hot water heater with a burner installed sideways, the structure has no problems in terms of durability. In the combustion chamber, the water flows down along the side wall of the combustion chamber, and the auxiliary combustion tube installed between the combustion chamber and the burner has a double tube structure consisting of an inner tube and an outer tube. We discovered that it would be a good idea to create a structure in which the hot water flowing down along the pipe is introduced between the outer and inner cylinders of this double-pipe structure, circulated in one direction, and then overflowed, and completed the present invention. be.

That is, the present invention has a combustion chamber provided above the hot water storage section provided at the lowest part, and a conical perforated plate that is attached above the combustion chamber and guides water sprinkled from above to the outer peripheral surface. An endothermic chamber filled with an endothermic material is provided above the endothermic chamber, and the water that is sprinkled onto the endothermic material and falls from above the endothermic chamber and the combustion gas of the fuel combusted in the combustion chamber are collected. In a direct-contact type hot water heater that obtains hot water at a desired temperature in the hot water storage part by direct contact, a double-tube structure auxiliary combustion in which a water cooling chamber is provided between an outer cylinder and an inner cylinder on the side of the combustion chamber. A burner is installed horizontally through a cylinder, and there is a weir plate whose upper end is located above the outer cylinder at the upper part of the combustion chamber side of the auxiliary combustion cylinder, and a height from both ends of the weir plate to the inner wall of the combustion chamber. A receiving tray is provided which receives hot water flowing down along the side wall of the combustion chamber and guides it to the water cooling chamber, and the receiving tray and the upper part of the water cooling chamber are connected to a partition plate. The present invention provides a direct contact type hot water heater with a burner attached next to it, which is characterized by being partitioned by.

〔Example〕

Hereinafter, the burner side-mounted direct contact type hot water heater according to the present invention will be described in detail.

Fig. 1 is an explanatory cross-sectional view of one embodiment of the direct contact hot water heater with a burner attached next to it according to the present invention;
The figure is a cross-sectional view taken along the line A--A in FIG. 1, and FIG. 3 is an enlarged cross-sectional view taken along the line B--B in FIG.

In the drawings, 1 is a heater main body, and 2 is a hot water storage section provided at the lowest part of the heater main body 1. Reference numeral 3 denotes a combustion chamber provided above the hot water storage section 2. A burner 4 is installed horizontally on the side wall of the combustion chamber 3 via an auxiliary combustion tube as shown in the figure, and the fuel supplied to the burner 4 is is combusted in this combustion chamber 3, and the combustion gas is discharged from the upper part of the heater body 1. 5 is an endothermic chamber provided above the combustion chamber 3, and this endothermic chamber 5 is provided with a conical perforated plate 6 which is installed above the combustion chamber 3 and guides water sprinkled from above to the outer peripheral surface. A heat absorbing material 7 is filled on top. 8 is a water supply nozzle that is installed above the heat absorbing material 7 of the heat absorbing chamber 5 and sprays water to be heated onto the heat absorbing material 7; 9 is a water supply nozzle that is installed above the heat absorbing chamber 5 of the heater body 1 and serves as a combustion chamber. This is an exhaust stack from which the combustion gas that is combusted in step 3 and heats water in the endothermic chamber 5 is discharged. 10
11 is a hot water outlet for supplying the hot water stored in the hot water storage section 2 to hot water usage points, and 11 is the top of the conical perforated plate 6 attached above the combustion chamber 3. This branch pipe 11 is for supplying a part of the water supplied to the water supply nozzle 8 to the top of the conical perforated plate 6 in order to prevent it from being overheated by gas and burned out. It is preferable that it is provided. Reference numeral 12 denotes a film of hot water that has flowed down along the side wall of the combustion chamber 3 from the outer peripheral surface of the conical perforated plate 6 at the bottom of the heat absorption chamber 5. 13 is combustion chamber 3
It is an auxiliary combustion tube for attaching burner 4 to the
The auxiliary combustion cylinder 13 is composed of an outer cylinder 13a and an inner cylinder 13b, and has a double pipe structure in which a water cooling chamber 13c is provided between the outer cylinder 13a and the inner cylinder 13b. The upper ends of each of the outer cylinders 13a
Weir plate 13d located higher up and this weir plate 13d
A receiving tray is provided which receives the hot water flowing down along the side wall of the combustion chamber 3 and guides it to the water cooling chamber 13c. ing. 14
is a partition plate that partitions the saucer and the upper part of the cold water chamber 13c, and the water level on both sides partitioned by this partition plate 14 is such that the water level on the higher side plate 13e side is higher than the water level on the lower side plate 13f side. Therefore, the stored hot water is circulated in one direction due to the water level difference and overflows from the lower side plate 13f. In order to circulate hot water in one direction regardless of the heating state by the burner 4, the position of the partition plate 14 is set so that the plane area partitioned by the partition plate 14 is larger on the side of the side plate 13e, which has a higher height. It is preferable to do so.

[Effect]

In order to use the burner side-mounted direct contact type hot water heater of the present invention having such a structure, fuel is supplied from the burner 4 to the combustion chamber 3 for combustion, and at the same time, the fuel is supplied from the water supply nozzle 8 to the conical perforated plate 6. When water is sprinkled on the heat absorbing material 7 of the heat absorbing chamber 5, the combustion gas is discharged from the combustion chamber 3 through the heat absorbing chamber 5 and from the upper exhaust pipe 9, and the sprayed water passes through the heat absorbing material 7 through the conical perforated plate. The hot water is heated by the combustion gas before flowing down along the slope of the combustion chamber 3, and then flows down along the conical perforated plate 6 to the periphery of the conical perforated plate 6. In the process of flowing down as a water film 12, it is received by a tray at the upper part of the combustion chamber 3 side of the auxiliary combustion cylinder 13 and flows into the water cooling chamber 13c between the outer cylinder 13a and the inner cylinder 13b, and then circulates in one direction. The hot water is heated in the process of overflowing from above the side plate 13f, which has a low height, and is further heated from the upper surface while being stored in the hot water storage section 2 to become hot water at a desired temperature.

In this hot water heating process, the conical perforated plate 6
As shown in the diagram, the hole is shaped like a cone or pyramid with an angle of inclination of 10 to 60 degrees to the horizontal, and the water flowing down from above the hole, such as a round hole, flows along the periphery of the hole. Since the water is formed so as to flow downward sequentially, the water sprayed from the water supply nozzle 8 onto the heat absorbing material 7 in the heat absorbing chamber 5 flows down through the heat absorbing material 7 and then flows down along the conical perforated plate 6. A film of hot water 12 flows from around the conical perforated plate 6 to along the side wall of the combustion chamber 3.
The outer cylinder 13a and the inner cylinder 13b of the auxiliary combustion cylinder 13 are received by the tray at the upper part of the combustion chamber 3 side of the auxiliary combustion cylinder 13 to which the burner 4 is attached.
The water inside the water cooling chamber 13c flows into the water cooling chamber 13c, which is partitioned by the partition plate 14, and is divided by the partition plate 14. The hot water circulates in one direction and overflows through the low-height side plate 13f, so even if the auxiliary combustion tube 13 is heated by the combustion flame from the burner, one side is always cooled by the hot water in the water cooling chamber 13c. In addition, since the hot water in the water cooling chamber 13c always flows in one direction, it never boils, so the cooling effect is stable.
This allows for stable operation without overheating and burning out.

〔effect〕

In the burner side-mounted direct contact type hot water heater according to the present invention as described in detail above, the auxiliary combustion tube 13 that attaches the burner 4 to the heater body 1 has a double pipe structure, and the combustion of this auxiliary combustion tube 13 Room 3
At the upper side, there is a saucer that guides the hot water flowing down along the side wall of the combustion chamber 3 into the water cooling chamber 13c between the outer cylinder 13a and the inner cylinder 13b, which have a double pipe structure, and the water level of the hot water received in this saucer. Water cooling chamber 13c with a difference
It has a very simple structure with a partition plate 14 that circulates the fuel in one direction within the heater. This allows the cylinder 13 to operate stably without overheating and burning out.

The burner side-mounted direct contact hot water heater of the present invention, which has such effects, is an effective method for disseminating direct contact hot water heaters, which have various advantages such as high thermal efficiency, to general households. It is of great practical value as it removes obstacles.

[Brief explanation of drawings]

Fig. 1 is an explanatory cross-sectional view of one embodiment of the direct contact hot water heater with a burner attached next to it according to the present invention;
The figure is a cross-sectional view taken along the line A--A in FIG. 1, and FIG. 3 is an enlarged cross-sectional view taken along the line B--B in FIG. DESCRIPTION OF SYMBOLS 1... Heater main body, 2... Hot water storage part, 3... Combustion chamber, 4... Burner, 5... Endothermic chamber, 6... Conical porous plate, 7... Endothermic material, 8... Water supply nozzle, 9
...Exhaust pipe, 10...Hot water outlet, 11...Branch pipe, 12...Hot water film, 13...Auxiliary combustion pipe, 13
a...outer cylinder, 13b...inner cylinder, 13c...water cooling chamber, 13d...weir plate, 13e...high side plate, 13f...low height side plate, 14...dividing plate.

Claims (1)

[Claims for Utility Model Registration] 1. A combustion chamber 3 is provided above the hot water storage section 2 provided at the lowest part, and the combustion chamber 3 is attached above the combustion chamber 3 so that water sprinkled from above is applied to the outer peripheral surface. An endothermic chamber 5 filled with an endothermic material 7 is provided on a conical perforated plate 6 that guides the endothermic material 7 to the endothermic material 7. In a direct contact type hot water heater that obtains hot water at a desired temperature in the hot water storage section 2 by bringing the combustion gas of the fuel combusted in the chamber 3 into direct contact with the combustion gas, an outer cylinder 13a and an inner cylinder are provided on the side of the combustion chamber 3. The burner 4 is installed horizontally through the auxiliary combustion tube 13, which has a double tube structure and has a water cooling chamber 13c between it and the tube 13b.
is attached to the upper part of the combustion chamber 3 side of the auxiliary combustion cylinder 13, and a weir plate 13d whose upper end is located above the outer cylinder 13a, and a height from both ends of the weir plate 13d to the inner wall of the combustion chamber 3. high side plate 13
e and a low-height side plate 13f, a receiving tray is provided which receives the hot water flowing down along the side wall of the combustion chamber 3 and guides it to the water cooling chamber 13c, and the receiving tray and the upper part of the water cooling chamber 13c are connected. A direct contact type hot water heater with a burner attached next to it, characterized in that it is divided by partition plates 14. 2. The direct contact type hot water heater with a burner attached next to it according to claim 1, wherein the planar area divided by the partition plates 14 is larger on the side of the taller side plate 13e.