US3575143A

US3575143A - Boiler and an ordinary type hot water device

Info

Publication number: US3575143A
Application number: US834415A
Authority: US
Inventors: Noboru Maruyama
Original assignee: Individual
Current assignee: Individual
Priority date: 1968-07-12
Filing date: 1969-06-18
Publication date: 1971-04-20
Anticipated expiration: 1988-04-20
Also published as: BE735357A; FR2012870A1; DE1935309A1; GB1240925A; CH509550A; NL6910719A; SE347569B

Abstract

A boiler and an ordinary-type hot water device comprising; a vertically oriented shell defining a hollow portion in the interior thereof, a heat absorbing body having an inwardly depressed concave form disposed within and spaced from said shell defining a fluid region therebetween, said fluid region including a peripheral fluid region portion about said heat absorbing body, a slanted inner flat body disposed within said heat absorbing body defining a semicylindrical heating gas chamber, successively narrowed upwardly, between a downside of said slanted flat body and said heat absorbing body, and also a semicylindrical heating gas space, successively enlarged upwardly, between an upside of said slanted flat body and said heat absorbing body, said inner flat body defining an opening at the top thereof communicating said semicylindrical heating gas chamber with said semicylindrical heating gas space, said flat body including a conduit communicating with said fluid region, means for passing a vaporizable fluid into said conduits, means for providing a heating gas in said semicylindrical heating gas chamber at the bottom thereof, and flue gas exit means communicating with said peripheral fluid region portion for removing said heating gas from said peripheral fluid region portion at the bottom thereof.

Description

United States Patent [72] Inventor Noboru Maruyama No. 26-14 Shirasagi 2-ch0me, Nakano-Ku, Tokyo, Japan [21] App]. No. 834,415 [22] Filed June 18, 1969 [45] Patented Apr. 20, 1971 [32] Priority July 12, 1968 [33] Japan [31] 43/48456 [54] BOILER AND AN ORDINARY TYPE HOT WATER DEVICE 6 Claims, 4 Drawing Figs.

[52] U.S.Cl 122/166 [51] Int. Cl F22b 7/08 [50] Field of Search 122/155, 156, 165, 166

[56] References Cited FOREIGN PATENTS 1,482,303 4/1967 France 122/155 855,716 11/1952 Germany 122/165 Primary Examiner-Kenneth W. Sprague AttorneyWoodhams, Blanchard and Flynn ABSTRACT: A boiler and an ordinary-type hot water device comprising; a vertically oriented shell defining a hollow portion in the interior thereof, a heat absorbing body having an inwardly depressed concave form disposed within and spaced from said shell defining a fluid region therebetween, said fluid region including a peripheral fluid region portion about said heat absorbing body, a slanted inner flat body disposed within said heat absorbing body defining a semicylindrical heating gas chamber, successively narrowed upwardly, between a downside of said slanted flat body and said heat absorbing body, and also a semicylindrical heating gas space, successively enlarged upwardly, between an upside of said slanted flat body and said heat absorbing body, said inner flat body defining an opening at the top thereof communicating said semicylindrical heating gas chamber with said semicylindrical heating gas space, said flat body including a conduit communicating with said fluid region, means for passing a vaporizable fluid into said conduits, means for providing a heating gas in said semicylindrical heating gas chamber at the bottom thereof, and flue gas exit means communicating with said peripheral fluid region portion for removing said heating gas from said peripheral fluid region portion at the bottom thereof.

PATENTEUAPRZOIHYI 3575143 INVENTOR BY wax, w??? ATTORNEY BOILER AND AN ORDINARY TYPE HOT WATER DEVICE BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiler or an ordinary-type water heating device heated by combustion gas utilizing a special cooling of the combustion gas in addition to providing a unifon'n heat distribution.

2. Description of the Prior Art Since the method of combustion utilized in the conventional boiler of a similar type is based upon the upward movement of combustion gas which is caused in direct proportion to the diameter of chimney and height thereof, the supply of air and the discharge of carbon dioxide could not necessarily be carried out smoothly. Accordingly, it is quite difficult in the conventional combustion method to conduct combustion and heat absorption with sufficient efficiency, so that a carefully designed chimney is needed for improving the operation.

In order to eliminate these drawbacks, the applicant previously invented a boiler and an ordinary-type hot water device heated by combustion gas and utilizing a special cooling of the combustion gas in addition to providing a uniform heat distribution. That invention has already been granted as US. Pat. No. 3,358,651.

However, in order that the heating gas, as it descends through the heating gas space, can be applied to the surfaces of the heat absorbing body as well as to the inner cylinder uniformly along every corner of both surfaces, the inner body disposed within said heat absorbing body must be oriented closer to the heat absorbing body adjacent to the flue gas exit than at the portion remote from said flue gas exit. Further, a suitable interference board must be provided adjacent to the convection coupling portion. These features were drawbacks because they caused difficulty in designing and manufacturing.

SUMMARY OF THE INVENTION The object of the present invention is to provide a boiler or an ordinary-type water heating device wherein the drawbacks of the conventional-type water heating device are eliminated. An inner flat body is disposed in place of the inner cylindrical body used in the prior invention so that a cooling of the combustion gas and a uniform heat distribution can be effected in an improved way, thereby causing an effective combustion and high efficiency of heat absorption. In addition designing as well as manufacturing is made easier and simpler.

Further, no chimney or stack need be used.

A further object of the present invention is to provide a boiler or an ordinary-type water heating device comprising an inner flat heat absorbing body slantedly disposed within an outer heat absorbing body, whereby the combustion gas arising from combustion means positioned at the bottom of the combustion chamber moves upwardly along one side of the inner flat body heat absorbing body and then descends along the other side of the inner flat heat absorbing body to be discharged through a flue gas exit, causing a decrease of the flow resistance of the combustion gas all through its flow path. Combustion is facilitated thereby and the cooling of the combustion gas is utilized to provide a uniform heat distribution so that the combustion and efficiency of heat absorption are improved and further the design and manufacture are made easier.

A still further object of the present invention is to provide a boiler or an ordinary-type water heater device comprising a plurality of vertical heat absorbing bodies projecting inwardly from the inner side of the heat absorbing surface portion of the heat absorbing body, and in which an inner flat heat absorbing body is disposed slantedly within said outer heat absorbing body, said inner vertical heat absorbing body rectifying thereby the upward flow as well as the downward flow of the heating gas for increasing the eff ciency of the combustion and in addition providing a uniform heat distribution and also efiecting a remarkable enlargement of the heat absorbing area together with a further increase of the combustion efiiciency.

BRIEF DESCRIPTION OF THE DRAWING FIG. I is a longitudinal sectional view of a boiler in accordance with the present invention.

FIG. 2 is a cross-sectional view taken along the line [H1 in FIG. 1.

FIG. 3 is a longitudinal sectional view of a water heating device to which the present invention is applied.

FIG. 4 is a longitudinal sectional view of an instant hot water boiler to which the present invention is applied.

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawing, and more particularly to FIGS. 1 and 2, a hollow, generally cylindrical heat absorbing body 4 having a heat absorbing surface portion 2 and an inner side heat absorbing surface portion 3 is located within and spaced from a main body or shell 1 of a boiler, the portion 2 of the heat absorbing body 4 having a concave shape.

Within the heat absorbing body 4 is disposed an inner hollow flat body 6 which is inclined with respect to the vertical. On one side of the inner flat body 6, there is defined a heating gas chamber 15. The chamber 15 is progressively smaller in cross section in an upward direction. On the other side of the body 14, there is defined heating gas space 5 which becomes progressively narrower in the downward direction. The heating gas initially rising from the-combustion device 16 through said partially cylindrical heating gas chamber 15 descends in turn through said partially cylindrical heating gas space 5.

A member or conduit 7 for carrying water is connected at its one end with the lower end of said flat body 6, and the other end of said member 7 communicates with the lower part of the side heat absorbing portion 3 of the heat absorbing body 4. The upper end of said cooling water member or conduit 7 is connected to a convection coupling member 9, which in turn is connected with one portion of the upper heat absorbing surface portion 2 of the heat absorbing body. Thus the water circulates by convection upwardly from the conduit 7 through the body 6 into the space between the upper wall 2 and the upper wall of the shell 1.

Further, a plurality of inner hollow vertical bodies 10 and 10' extend inwardly from the inner surface of the inner side heat absorbing portion 3 of the heat absorbing body 4. The bodies I0 project into the chamber 15 and the body 10' projects into the space 5. Each of the inner

vertical bodies

10 and 10 communicates at its upper end with the upper part of said side heat absorbing portion 3 through a convection coupling member 11, while its lower end communicates with the lower part of said side heat absorbing portion 3 through a convection cooling water communicating member or conduit 12.

At the lower portion of the outside of the main body or shell I there is provided a water feeding and discharging pipe (not shown), through which cool water is introduced into the space between said shell and the body 4. The cool water circulates by convection through the inside of the inner flat body 6 and the inner

vertical bodies

10 and 10. The water passes through the convection cooling water communicating member or conduit I2 and then passes through the

convection coupling members

9 and 11.

A suitable means for combustion is provided within a lower portion of the combustion chamber 15 below the flat body 6, and the heating gas arising from the heating device is applied to the inner side heat absorbing plate 13 of the inner flat body 6, the outer side heat absorbing plate of the inner vertical body I0 and the upper heat absorbing surface portion 2 of the heat absorbing body 4 so as to conduct the heat thereto.

A temperature reduction is effected due to the heat absorption by said plates and then the heating gas, on

becoming cooler and heavier, is introduced to the heating gas space 5 to flow down therethrough. The heating gas descends through the heating gas space, conducting heat to the inner side heat absorbing surface portion 3 of the heat absorbing body 4, the outer side heat absorbing surface portion of the inner vertical body and the outer side heat absorbing plate 14 of the inner flat body 6 on its way through the heating gas space. Then the heating gas is gathered at a flue gas exit or exhaust 8 so as to be discharged from a flue passage 17 into the surrounding atmosphere.

In the meantime, while the heating gas flows up in the heating gas chamber and flows down in the semicylindrical heating gas space 5, the flow is rectified into a smooth stream by the inner and outer side

heat absorbing plates

13, 14 of the inner flat body and the heat absorbing surface portions of the inner vertical bodies l0, l0 and thereby there is obtained a uniform heat distribution against each heat absorbing surface portion as well as an increased efficiency of heat absorption thereof.

Since the upper portion of the inner flat body 6 is connected with the upper heat absorbing surface portion through a convection coupling member 9 and, further, the upper portions of the inner vertical bodies l0, 10 are also connected with the inner side heat absorbing surface portion 3, the heated water by heat absorption within the inner flat body 6 and the inner vertical bodies 10, 10' can rapidly move upwardly without any resistance, so that the convection of the hot water in the boiler may be greatly improved.

As described above, the heat absorbing body 4 is located within the boiler l, and the inner flat body 6 is disposed in an inclined position and the inner

vertical bodies

10, 10 are also provided so that the uniform conduction of heat and the convection may be effected by introducing cool water into the inner flat body 6 and

vertical bodies

10 and 10 so as to cool the heating gas and, therefore, the fuel consumption is substantially reduced and hot water or heated stream at the desired temperature may be rapidly and easily obtained.

In FIG. 1, numerical reference 19 designates a fire hole. Hot water or heated steam may be removed by means of a hot water faucet 18 provided at the upper portion of the main body 1.

The inner flat body 6 and outer cylinder 4 or the inner flat body 6 alone may be constituted by pipes arranged parallel. In this case a covering tube or cylinder is mounted on the outer surface of the inner flat body so that the downward movement of heat may be improved or suitably regulated.

The above description has been made primarily with reference to an embodiment of the present invention applied to a boiler. However, the present invention is not limited to a boiler in its application, but the present invention can be applied to any hot water boiler device with highly improved effects.

Referring now again to the drawing and more particularly to FIG. 3, the present invention is illustrated as being applied to a hot water device including seats 20, a handle 21 and a cap or lid 22. FIG. 4 illustrates the present invention as applied to an instant hot water boiler including a heating device 23 utilizing gas or petroleum as a fuel, a fuel supply pipe 24, a water supply valve 25, an igniting and hot water furnishing valve 26 and a regulating valve 27. There is no need to describe furthermore about these embodiments, because their combustion principles, construction and the effects thereof are similar to the boiler which has been described in detail thus far.

As is apparent from the above description of the embodiments of the present invention, the present invention utilizes in most efficient manner the characteristic that the convection phenomenon of heating gas within a boiler body may be greatly improved by heat absorption, in addition to the adoption of a unique combustion method by which the boiler body is uniformly distributed so as to be heated, so that the discharge of carbon dioxide and the supply of air which is necessary for combustion may be simultaneously effected, whereby complete combustion and a high thermal efficiency are obtained.

Therefore, hot water or steam at a desired temperature may be rapidly obtained and fuel consumption therefore can be substantially reduced.

Further, the present invention is very simple in construction so that the manufacture thereof is simplified and cleaning the device may be easily executed.

I claim:

1, A liquid heating and/or vaporizing device comprising:

a vertically oriented shell defining a hollow portion in the interior thereof;

a heat absorbing body having an inwardly depressed concave form disposed within and spaced from said shell defining a fluid region therebetween;

said fluid region including a peripheral fluid region portion about said heat absorbing body;

a slanted, flat, inner body disposed within said heat absorbing body and defining therewith a heating gas chamber and a heating gas space, said chamber being defined between the lower side of said slanted flat body and said heat absorbing body and being progressively narrower in the upward direction, said heating gas space being defined between the upper side of said slanted flat body and said heat absorbing body and being progressively wider in the upward direction;

said inner flat body defining an opening at the top thereof communicating said semicylindrical heating gas chamber with said semicylindrical heating gas space;

said inner flat body including a conduit communicating with said fluid region;

means for passing a liquid into said conduit;

means for providing a heating gas in said heating gas chamber at the bottom therefore; and

flue gas exit means communicating with said peripheral fluid region portion for removing said heating gas from said peripheral fluid region portion at the bottom thereof.

2. A liquid heating and/or vaporizing device comprising:

a vertically oriented shell defining a hollow portion in the interior thereof;

a plurality of inner vertical bodies disposed within said heat absorbing body, and connected at their upper and lower ends with upper and lower parts of said heat absorbing body;

said inner flat body and said inner vertical bodies including conduits communicating with said fluid region;

means for passing a liquid into said conduits;

means for providing a heating gas in said heating gas chamber at the bottom thereof; and

3. A device according to claim 1 in which the heat absorbing body is constructed of pipes.

4. A device according to claim 1 in which the inner flat body is constructed of pipes.

5. A device according to claim 2 in which the heat absorbing body is constructed of pipes.

6. A device according to claim 2 in which the inner flat body is constructed of pipes.

Claims

1. A liquid heating and/or vaporizing device comprising: a vertically oriented shell defining a hollow portion in the interior thereof; a heat absorbing body having an inwardly depressed concave form disposed within and spaced from said shell defining a fluid region therebetween; said fluid region including a peripheral fluid region portion about said heat absorbing body; a slanted, flat, inner body disposed within said heat absorbing body and defining therewith a heating gas chamber and a heating gas space, said chamber being defined between the lower side of said slanted flat body and said heat absorbing body and being progressively narrower in the upward direction, said heating gas space being defined between the upper side of said slanted flat body and said heat absorbing body and being progressively wider in the upward direction; said inner flat body defining an opening at the top thereof communicating said semicylindrical heating gas chamber with said semicylindrical heating gas space; said inner flat body including a conduit communicating with said fluid region; means for passing a liquid into said conduit; means for providing a heating gas in said heating gas chamber at the bottom therefore; and flue gas exit means communicating with said peripheral fluid region portion for removing said heating gas from said peripheral fluid region portion at the bottom thereof.

2. A liquid heating and/or vaporizing device comprising: a vertically oriented shell defining a hollow portion in the interior thereof; a heat absorbing body having an inwardly depressed concave form disposed within and spaced from said shell defining a fluid region therebetween; said fluid region including a peripheral fluid region portion about said heat absorbing body; a slanted, flat, inner body disposed within said heat absorbing body and defining therewith a heaTing gas chamber and a heating gas space, said chamber being defined between the lower side of said slanted flat body and said heat absorbing body and being progressively narrower in the upward direction, said heating gas space being defined between the upper side of said slanted flat body and said heat absorbing body and being progressively wider in the upward direction; a plurality of inner vertical bodies disposed within said heat absorbing body, and connected at their upper and lower ends with upper and lower parts of said heat absorbing body; said inner flat body defining an opening at the top thereof communicating said semicylindrical heating gas chamber with said semicylindrical heating gas space; said inner flat body and said inner vertical bodies including conduits communicating with said fluid region; means for passing a liquid into said conduits; means for providing a heating gas in said heating gas chamber at the bottom thereof; and flue gas exit means communicating with said peripheral fluid region portion for removing said heating gas from said peripheral fluid region portion at the bottom thereof.