# US 4,394,839 A · Combustion apparatus

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- Number: US 4,394,839 A
- Document ID: US4394839A
- Status: Granted
- Kind: A
- Application number: 06/265,596
- Filed: 1981-05-20
- Granted: 1983-07-26
- Earliest claimed: 1980-10-16
- Inventors: Ikeda Toshio
- Web page: https://patentgrep.com/patent/US4394839A

## CPC

- F23J 15/027: {using cyclone separators}
- F23G 5/165: {arranged at a different level}
- F23G 5/245: {with perforated bottom or grate}
- F24H 1/26: the water mantle forming an integral body
- F24H 1/28: including one or more furnace or fire tubes
- F24H 2230/00: Solid fuel fired boiler
- F23J: REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G7/06)
- F23G: CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22)

## Abstract

A combustion apparatus and a process used to obtain hot water without producing any pollution therefrom, including a hermetic casing, a furnace and cyclone device, all of which are disposed in the hermetic casing. The furnace being designed to combust a waste material and the exhaust gases including dust being introduced into the cyclone device to eliminate the dust. The hot water is obtained by surrounding the furnace and cyclone device with a space including water which contacts directly to the heated walls thereof.

## Claims

### Claim 1

A combustion apparatus comprising:
a hermetic casing including a furnace and a cyclone device operatively disposed therein with a space being provided therebetween;
said furnace being in communication with said cyclone device through a passage;
said hermetic casing having an inlet port for supplying fluid to said space and an outlet port for discharging fluid from said space;
said furnace including a firing port and a fire hole for supplying waste materials and an ashes hole for removing ashes all of which extend out of said hermetic casing;
an exhaust pipe being operatively positioned to extend through the top portion of said hermetic casing and a fire grate being disposed adjacent a bottom portion of said furnace;
a blower being operatively connected with said exhaust pipe and said fire grate to supply air to said furnace;
and said cyclone device including an ashes hole for removing ashes at the bottom portion thereof which extends out of said hermetic casing.

### Claim 2 (depends on 1)

A combustion apparatus according to claim 1, wherein said furnace includes plural combustion chambers therein both of which are defined by a plate member disposed between the bottom portion and top portion of said furnace.

### Claim 3 (depends on 1)

A combustion apparatus according to claim 1, wherein said exhaust pipe is connected with said blower by means of a flexible tube for adjusting the position of said exhaust pipe within said furnace.

### Claim 4 (depends on 3)

A combustion apparatus according to claim 3, wherein said exhaust pipe includes holes provided radially at the lower portion thereof.

### Claim 5 (depends on 3)

A combustion apparatus according to claim 3, wherein said exhaust pipe includes holes through a section of an upper portion thereof, said upper portion being adapted to be directed towards said passage to said cyclone device.

### Claim 6 (depends on 1, 2, 3, 4, 5)

A combustion apparatus according to claim 1, 2, 3, 4 or 5, wherein a hot water tank is positioned on said hermetic casing and connected to a pipe connecting member for communicating said hot water tank with said space.

### Claim 7 (depends on 1, 2, 3, 4, 5, 6)

A combustion apparatus according to claim 1, 2, 3, 4, 5 or 6 therein an indicator tank containing a floating member therein is operatively connected to said hermetic casing and a pipe connecting member for communicating said indicator tank with said space in said hermetic casing.