JP2010266184A - Device for heating air during duty cycle of heating boiler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a boiler capable of saving fuel consumption by recovering heat from an exhaust gas with high recovery rate. <P>SOLUTION: This device is composed of one conduit for supplying the air 3 to a furnace and one conduit for discharging the exhaust gas 2 from one heating boiler 1 into one hot air flue 8, and the conduit for discharging the exhaust gas has the shape similar as one cosine curve over the whole length to be connected with the hot air flue 8, and has a vertical exhaust gas conduit 4 adhered to a vertical air conduit 11, and the conduit for supplying the air has the shape similar as one sine curve over the whole length of the air pipe and has the vertical air pipe 11. The vertical exhaust gas conduit 4 has the shape decreasing a volume in the hot air flue direction, and the vertical air pipe 11 has the shape increasing the volume in the direction of the boiler. Thus the air 3 can recover heat from the exhaust gas 2 with high recovery rate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for heating air during an operation cycle of a heating boiler, particularly a central heating water boiler using solid fuel or biomass as fuel.

  Patent Document 1 describes an environmentally friendly central heating water boiler designed to provide solid heating, particularly wood and coal, to provide central heating for homes and other facilities. The water jacket surrounding the combustion chamber, housed in the boiler body, is additionally heated from the outside by the exhaust gas leaking from the exhaust gas partition plate surrounding the water jacket. The exhaust gas divider is insulated by chamotte bricks and mineral wool mats.

  Patent Document 2 describes a combustion method and a combustion boiler that reduce the emission of nitrogen oxides in exhaust gas from a solid fuel boiler with a retort burner by lowering the flame core temperature. This is due to the retort burner being injected by one fan via one moving recirculation pipe, a nozzle located on the ceiling of the boiler, or a nozzle located around the retort burner, or a combination thereof. This is achieved by using recirculated exhaust gas, exhaust gas / air mixture, steam or steam / air mixture flowing or flowing directly over the flame into the combustion chamber.

A water boiler that uses solid fuel, particularly biomass, as described in Patent Document 3 includes one circular lid that houses one main body and one water jacket, and a combustion chamber is disposed thereunder. A circular lid that houses the water jacket is connected to the water chamber of the boiler body. The lower arm portion of the body is provided with a conduit for a portion of overfire air, the amount of overfire air being adjusted by a rotating flap driven by a lower electric stepper motor. The upper part of the recovery combustion chamber is provided with an injection conduit for additional overfire air, the amount of which is controlled by a rotating flap driven by an upper electric stepper motor. The grate tube located under the circular lid containing the water jacket is cooled using water and cleaned between the grate tubes by a scraper driven by one linear electromagnetic drive unit. The exhaust gas collector comprises one oxygen probe that controls the stepper motor to ensure that the level of toxic substances in the exhaust gas is very low. Boiler order to simplify the operation of the user, and one laser sensor for detecting that one of the recovery combustion chamber automatic fuel supply device has reached the one particular upper fuel level, recovery combustion chamber of one A second one laser sensor is provided for detecting that a specific lower fuel level has been reached and activating the automatic fuel supply.

  Patent Document 4 describes one central heating water boiler having one system for supplying primary air and overfire air to a combustion chamber. The system includes an injection nozzle on the boiler side. The nozzle operates with a single inlet fan located in an air conduit that injects air into the space between the water jacket and the outer jacket. The injection nozzle is a fixed pipe disposed between the walls of the water jacket and connects the combustion chamber, the space between the water jacket and the outer jacket. The number of injection nozzles depends on the size and capacity of the boiler.

  Patent Document 5 describes a heating boiler including one furnace chamber, one furnace, one blower for supplying compressed air, and one fuel supplier. In the upper part of the furnace chamber there is one heat exchanger in the form of a boiler drum with an internal ring, formed by a longitudinal exhaust pipe. The exhaust pipe is arranged radially around the longitudinal axis of the heat exchanger and has at least one outer ring arranged in the water jacket and formed by the exhaust pipe, the outlet of which is a boiler hot air pipe The inlet is located above the furnace chamber and forms a ring of at least one outlet below the outlet, the inlet being arranged in the exhaust gas return chamber.

  Patent Document 6 describes a water boiler that burns anthracite. The boiler comprises one heat exchanger with two retort furnaces that are fueled from symmetrical and different coal supply systems. The air required for the combustion process is supplied onto the furnace by one contrasting dual primary air system. These systems are operated by a separate fan. The heat exchanger is connected to the exhaust gas via a single multicyclone.

  US Pat. No. 6,057,017 particularly includes one fan assembly, one drive motor, a suction fan located on the rotary shaft of the drive motor, which is located in the suction pipe and ensures forced introduction of air from the room or the outside, and An exhaust gas boiler is described comprising a single exhaust fan located on the rotary shaft of a drive motor that is located in the exhaust pipe and ensures exhaust gas exhaust. In this way, air from the inside or outside of the room is forcibly introduced into the suction pipe by the suction fan, and the exhaust gas is forcibly introduced into the discharge pipe by the exhaust fan. This scheme ensures one stable air flow for intake, combustion, and exhaust.

  Patent document 8 describes one boiler consisting of one retort furnace having one extended heating surface. This boiler is an environmentally friendly device. It consists of a two-stage furnace that generates heat from solid fuel and one extended heating surface. The two-stage retort furnace has an air slot, and the symmetrical structure of the collector supplies the boiler with air and fuel from both the left and right sides. The heat exchanger consists of several parts, forming a single water unit, one lower part around the furnace, one central part formed by a boiler drum with tubes, and around the exhaust gas collector It consists of an upper part and an outer part that forms a passage pocket.

  Patent document 9 describes one heating boiler by gasification that burns solid fuel, especially wood. The heating boiler has one pear-shaped cross section, and consists of one fuel and a vaporization chamber concentrated in the center and the top line. In the top line part and the center part, there is one slot-like grate having a length 1/5 to １ ／ of the length of the top line part. Above the grate, primary air inlets are arranged on both sides at a height of 0.4-0.6, the maximum height of the fuel and vaporization chamber. A slot-like combustion nozzle is disposed below the grate. The nozzle is approximately equal in length to the grate and forms a connection to the combustion chamber. The combustion chamber is divided into a pre-combustion mixing chamber and an underlying post-combustion chamber by a slightly inclined horizontal wall. The cross sections of both chambers resemble the kidney and expand in the direction of flow. Overfire air from the air supply pipe and the air superheater is supplied to the pre-combustion mixing chamber. There is one return / post-combustion chamber on the exhaust port of the pre-combustion mixing chamber and the suction port side of the post-combustion chamber. There is another post-combustion chamber between the exhaust port of the post-combustion chamber and the exhaust gas pipe, through which one supply pipe for overfire air is connected to the air superheater.

Polish patent application 378703 Polish patent application 380100 Polish patent application 381102 Polish patent application 381355 Polish patent application 368210 Polish patent application 376356 Polish patent 196625 Polish patent 192574 Polish patent 188246

The subject of the invention is one conduit for supplying air to the furnace;
One conduit for discharging exhaust gas from one heating boiler to one hot air pipe;
An air heating device during an operation cycle of a heating boiler using a solid fuel or biomass as a fuel,
The apparatus has a shape resembling a cosine curve over its entire length up to the connection to the hot air pipe, and is advantageously a recirculated exhaust gas pipe having a vertical exhaust gas pipe that adheres to the vertical air pipe With
The vertical air tube here has a shape resembling a sinusoid over the entire length of the air tube,
There is also a device characterized in that there is one pump fan on the last vertical air pipe, which is located where the end portion of the exhaust gas pipe is connected to the hot air feed pipe.
A circulating exhaust gas pipe having a shape resembling a cosine curve has a vertical exhaust gas pipe whose volume decreases in the direction of the hot air pipe, and an air pipe having a shape resembling a sine curve is a boiler. It has a vertical air tube that increases in volume in the direction.
An air guide is provided inside the vertical air pipe.
Vertical air tubes have lower mesh connections and upper mesh connections alternately in the curved portion.
The lower mesh connection and the upper mesh connection have the shape of a cylindrical conduit.
An air pipe is advantageously connected to the ash pan of the heating boiler.
A vertical air tube is provided with an agglomerate outlet in the lower part.

The present invention uses heat from the boiler flue and other gases forced to the ambient air during the combustion process, along with heat forced to the ambient air from other devices intended for reuse. The device according to the invention allows heat from the exhaust gas to be used to superheat the air supplied to the boiler ash pan.
Heat recovery from the exhaust gas begins by being sucked through one separate air tube in the opposite direction of the hot gas flow. In the thermal retrograde mechanism, the air conduit begins to absorb heat from the exhaust gas exhaust pipe to the hot air delivery pipe and ends with the boiler smoke pipe. Such a device configuration and method of reusing heat from the exhaust gas allows hot air to be supplied to the combustion chamber of the boiler and improves boiler efficiency. Heat is again introduced into the boiler via the ash pan. The heat may be used to heat other heat exchangers or may be used to warm the room by blowing air.
The equipment used in the central heating boiler room in the home has resulted in high heat recovery (90%) and 50-60% savings in fuel consumption. This device can also be used in commercial boiler rooms and can be used to recover heat from other devices that are releasing used heat directly to the outside air.

  Today, addressing climate warming, the device can reduce exhaust and heat emissions into the atmosphere by 90% by using a thermal retrograde mechanism.

  The device has been technically tested. This device is currently used in the boiler room of single-person households and meets the requirements to reduce heat release to the atmosphere.

FIG. 2 illustrates the connection of two shapes of conduits, an exhaust gas tube and an air tube, illustrating the subject of the present invention.

  The configuration example of the present invention includes one conduit for supplying air (3) to the furnace of the heating boiler (1), and one conduit for sending exhaust gas (2) from the heating boiler (1) to the hot air feed pipe (8). Consists of. This device has a circulation type exhaust gas pipe (2), which has a shape resembling a cosine curve over the entire length up to the connection with the hot air feed pipe (8), and is connected to the vertical air pipe (11). It consists of a vertical exhaust pipe (4) to be bonded, the vertical air pipe (11) being shaped like a sinusoid over the entire length of the air pipe (3), and the exhaust gas The last vertical conduit (5) where the end portion (7) of the tube (2) is connected to the hot air delivery tube (8) is provided with one pump fan (6). The circulating exhaust gas pipe (2) shaped like a cosine curve has a vertical exhaust gas pipe (4) whose volume decreases in the direction of the hot air feed pipe (8), and is shaped air like a sine curve. The pipe (3) has a vertical air pipe (11) whose volume increases in the boiler (1) direction. An air guide (9) is arranged in the air pipe (11). The vertical air pipe (11) has a cylindrical lower mesh connection (13) and a cylindrical upper mesh connection (14) alternately in the curved portion. The air pipe (3) is connected to the ash tray (12) of the heating boiler (1). The vertical air pipe (11) is provided with an outlet (10) for agglomerates generated by the temperature difference between the air and the exhaust gas in the lower part.

DESCRIPTION OF SYMBOLS 1 Heating boiler 2 Exhaust gas pipe 3 Air pipe 4 Vertical exhaust gas pipe 6 Pump fan 8 Hot air feed pipe 9 Air guide 10 Outlet 11 Vertical air pipe 12 Ash tray 13 Lower mesh connection 14 Upper mesh connection

Claims (7)

One conduit for supplying air to the furnace;
One conduit for discharging exhaust gas from one heating boiler to one hot air pipe;
An air heating device during an operation cycle of a heating boiler using a solid fuel or biomass as a fuel,
The device has a shape resembling a cosine curve over its entire length up to the connection to the hot-air pipe (8), and advantageously adheres to a vertical air pipe (11). A circulation exhaust gas pipe (2) having a pipe (4);
Wherein the vertical air pipe (11) has a shape resembling a sinusoid over the entire length of the air pipe (3),
Also, there is one pump fan on the last vertical air pipe (5), which is located where the end portion (7) of the exhaust gas pipe (2) is connected to the hot air feed pipe (8). Features device.   The circulating exhaust gas pipe (2) having a shape resembling one cosine curve has the vertical exhaust gas pipe (4) whose volume decreases in the direction of the hot air feed pipe (8), and one sine 2. Device according to claim 1, characterized in that the air pipe (3) having a shape resembling a curve comprises the vertical air pipe (11) whose volume increases in the direction of the boiler (1).   Device according to claim 1, characterized in that it comprises an air guide (9) inside said vertical air pipe (11).   2. Device according to claim 1, characterized in that the vertical air pipe (11) has lower mesh connections (13) and upper mesh connections (14) alternately in the curved part.   Device according to claim 4, characterized in that the lower mesh connection (13) and the upper mesh connection (14) have the shape of a cylindrical conduit.   2. Device according to claim 1, characterized in that the air pipe (3) is advantageously connected to an ash tray (12) of the heating boiler (1).   2. Device according to claim 1, characterized in that the vertical air pipe (11) comprises an agglomerate outlet (10) in the lower part.

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