KR101536280B1 - Heating apparatus with fuel preheating system - Google Patents

Abstract

The present invention relates to a heating apparatus with a fuel preheating system, which supplies waste heat exhausted to the outside together with exhaust gas generated in a combustion tank to a fuel storage device in order to increase a temperature of wood derived fuel stored in the fuel storage device and dehumidify the wood derived fuel, thereby improving fuel efficiency. The heating apparatus with a fuel preheating system comprises: the fuel storage device storing the wood derived fuel; a fuel tank generating heat while fuel is supplied from the fuel storage device and is burned and having an exhaust pipe allowing the burned exhaust gas to be exhausted to the outside; a ventilator supplying outer air into the combustion tank; a blower forcibly discharging exhaust gas processed from the exhaust pipe of the combustion tank; and an exhaust chamber connecting the blower to the exhaust pipe of the combustion tank to form an exhaust gas flowing passage and providing a recovery space for waste heat included in the exhaust gas; and a fuel pre-heating device pre-heating fuel in the combustion storage device while supplying the waste heat of the exhaust gas flowing through the combustion chamber to the fuel storage device.

Description

[0001] HEATING APPARATUS WITH FUEL PREHEATING SYSTEM [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus having a fuel preheating system, and more particularly, to a heating apparatus having a fuel preheating system, To a heating apparatus having a fuel preheating system capable of improving the combustion efficiency of fuel.

In recent years, heating devices such as a hearth furnace or a boiler using wood fuel have been actively developed as one of the measures to reduce the cost of expensive fuel.

As for the boiler using the conventional wood-based fuel among the heating devices,

A fuel reservoir for storing wood fuel and supplying it to the combustion chamber, a conveyance screw connected to the fuel reservoir through a fuel conveyance pipe for supplying wood fuel, a burner for burning the wood fuel transferred through the conveyor screw, A combustion chamber, an air blower capable of supplying air to the combustion chamber, an air blower for discharging the combustion gas burned in the combustion chamber to the atmosphere, and an ignition device for igniting the wood based fuel in the combustion chamber.

The conventional heating device burns the wood-based fuel supplied to the combustion chamber through the conveying screw from the fuel reservoir through the ignition device while the fan blows the fuel smoothly by forcibly supplying the outside air into the combustion chamber. .

At this time, the exhaust gas burned in the combustion chamber is exhausted to the outside through the fan, and is discharged to the outside together with the waste heat contained in the exhaust gas.

On the other hand, wood-based fuel does not burn immediately when it contacts with combustion air such as gas or petroleum fuel but burns in a state of having fuel to some extent in the combustion chamber. Therefore, And supplied to the combustion chamber.

That is, since the wood-based fuel must be stored in the fuel reservoir continuously, the state of the fuel reservoir changes depending on the external conditions such as the temperature and humidity of the installation place. Especially, when the humidity of the installation place is high, There arises a problem that the combustion efficiency of the fuel decreases as the internal humidity increases.

Further, when the fuel storage device is installed outside because the condition of the installation place is not good, the fuel storage device is directly exposed to the external temperature and humidity environment, and the combustion efficiency of the fuel is further deteriorated.

Korean Patent No. 10-1224631 Korean Patent No. 10-1436424

The present invention has been made in order to overcome the problems of the prior art as described above, and it is an object of the present invention to preheat the fuel in the fuel reservoir through waste heat exhausted to the outside together with the exhaust gas through the exhaust chamber, It is an object of the present invention to provide a heating device having a fuel preheating system capable of raising the temperature and improving the combustion efficiency.

Specifically, the present invention provides a heating device having a fuel preheating system capable of smoothly preheating wood-based fuel by heating air and supplying air through waste heat of an exhaust chamber while supplying a part of air by a blower to a fuel reservoir That is the purpose.

It is another object of the present invention to provide a heating device having a fuel preheating system capable of controlling the supply of warm air according to the temperature / humidity inside the fuel reservoir.

According to an aspect of the present invention, there is provided a heating apparatus having a fuel preheating system including: a fuel reservoir for storing wood-based fuel; A combustion tank having an exhaust pipe through which the fuel of the fuel reservoir is supplied and burned to provide heat and the exhausted exhaust gas is exhausted to the outside; A blower for supplying outside air into the combustion tank; An exhaust fan for forcibly exhausting the exhaust gas exhausted from an exhaust pipe of the combustion tank; An exhaust chamber connecting the ventilator and the exhaust pipe of the combustion tank to provide a space for recovering waste heat contained in the exhaust gas while forming a path for moving the exhaust gas; And a fuel preheater for preheating the fuel in the fuel reservoir while supplying waste heat of the exhaust gas to the exhaust chamber to the fuel reservoir.

For example, the fuel pre-heater may be connected at one end to the blower while the other end of the fuel pre-heater is connected to the fuel reservoir to supply the air of the blower to the fuel reservoir. Part of the air passes through the inside of the exhaust chamber, A waste heat supply pipe heated by the waste heat supply pipe to supply warm air to the fuel storage; And a jet member connected to the other end of the waste heat supply pipe in a state of being installed in the fuel reservoir and spraying the warm air supplied to the waste heat supply pipe into the fuel reservoir.

For example, the injection member may include at least one connection pipe installed at a side wall of the fuel reservoir and connected to the waste heat supply pipe; And at least one spraying pipe extending into the storage space of the fuel reservoir at one end thereof communicably connected to the connection pipe and having a plurality of spray holes formed in a longitudinal direction thereof to spray hot air through the spray hole, ; ≪ / RTI >

The fuel preheater may further include a warm air controller for controlling supply of hot air through the waste heat supply pipe while opening / closing the waste heat supply pipe in accordance with the temperature or humidity inside the fuel reservoir.

For example, the hot air controller may include a temperature / humidity sensor installed inside the fuel reservoir; And an open / close valve installed in the waste heat supply pipe to open / close the waste heat supply pipe while being operated by a detection signal of the temperature / humidity sensor.

The heating apparatus of the present invention further includes a dust collector installed inside the exhaust chamber to drop the fine particles contained in the exhaust gas to the bottom of the exhaust chamber while rotating the exhaust gas moving to the fan, The waste heat supply pipe may extend in a shape of a portion passing through the inside of the exhaust chamber so as to be wound along the outer circumferential surface of the dust collector.

In the heating apparatus having the fuel preheating system according to the present invention as described above, the waste heat discharged to the exhaust chamber is supplied to the fuel reservoir by the fuel preheater, so that the woody fuel is preheated, so that even when the fuel reservoir is installed at a high humidity The moisture of the fuel can be removed and the combustion efficiency can be improved.

Specifically, the present invention supplies hot air to a spraying member installed in a fuel reservoir while a part of a waste heat supply pipe constituting a fuel preheater is heated by an exhaust chamber, so that woody fuel can be smoothly preheated by warm air and moisture can be removed .

Further, according to the present invention, the opening / closing valve constituting the warm air controller can prevent unnecessary energy consumption by opening / closing the waste heat supply pipe according to the detection signal of the on / humidity sensor installed in the fuel reservoir, have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall structural view showing a heating apparatus having a fuel preheating system according to the present invention; FIG.
Fig. 2 is an exploded perspective view showing the injection member of the present invention. Fig.
3 is a configuration diagram showing another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. It is to be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ",or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

1, a heating apparatus having a fuel preheating system according to an embodiment of the present invention includes a fuel reservoir 10, a combustion tank 30, a boiler body 40, a blower 70, an evaporator 80 And a swivel (100).

The fuel reservoir 10 stores fuel made of wood-based fuel, for example, pellet fuel in which the wood is crushed in the form of small particles and molded in the form of pellets.

1, the combustion tank 30 is provided in the form of a tank to provide a combustion space for the fuel, and an exhaust pipe 31 is provided at one side of the combustion tank 30 And exhausts the combustion gas to the outside.

1, the exhaust pipe 31 of the combustion tank 30 is connected to the ventilator 80 through an exhaust chamber 90, which will be described later, to exhaust the exhaust gas by combustion.

This combustion tank 30 is supplied with wood-based fuel through the fuel injector 20 as shown in Fig.

That is, the fuel injector 20 is a component that supplies the fuel stored in the fuel reservoir 10 to the combustion tank 30, which will be described later. The fuel injector 20 is, for example, a transfer pipe for connecting the combustion tank 30 and the fuel reservoir 10 And the fuel is continuously supplied through the rotation of the screw incorporated in the engine.

The fuel injector 20 controls the screw through a controller (not shown) to supply the fuel. The fuel injector 20 supplies the fuel to the fuel injector 20 through the controller, not shown, and calculates the number of revolutions of the screw in accordance with the internal temperature of the combustion tank 30 or the pressure or the heat temperature of the boiler body 40 Provides fuel while proportional control.

1, the grate 50 is installed in the combustion tank 30 so that the fuel supplied from the fuel injector 20 is burnt, and the grate 50 is a hollow- Thereby providing an air supply space 50a at a lower portion of the fuel.

In addition, as shown in FIG. 1, the combustion tank 30 is provided at the lower part of the grate 50 with a reed receiver 37 so as to be able to draw out the ash to be discharged after the combustion of the fuel.

The combustion tank 30 may be provided with an igniter 60 for igniting the fuel loaded in the grate 50. The igniter 60 may be composed of a gas igniter or a spark igniter, and may be constituted by a burner using oil as fuel.

1, a boiler body 40 in the form of a water jacket is installed on the outer circumferential surface of the combustion tank 30 to heat or evaporate water through the burning heat.

As shown in FIG. 1, the boiler body 40 is installed to receive the combustion tank 30 while separating from the outer circumferential surface of the combustion tank 30, and circulates water in the space to heat the water.

This boiler body 40 is provided with unillustrated inlet and outlet to circulate the heated water.

The blower 70 is installed outside the combustion tank 30 and operates the controller to supply the outside air to the air supply space 50a of the grate 50 inside the combustion tank 30. [

The heating device of the present invention may further include an external air intake duct 200 and a damper 250, as shown in FIG.

The external air intake duct 200 is configured separately from the blower 70 so that external air can be naturally introduced into the combustion tank 30.

The damper 250 is a member that opens and closes the external air intake duct 200. The damper 250 operates under the control of a controller (not shown) to control the amount of air flow while controlling the opening and closing amount of the external air intake duct 200.

A temperature sensor (not shown) may be installed in the external air intake duct 200 to sense the temperature of the external air intake duct 200 and provide the sensed temperature to the damper 250.

The temperature sensor senses the temperature of the air communicating with the external air intake duct 200 and provides the sensed temperature to the damper 250 to open and close the damper 250 so that the heat of the combustion tank 30 is transmitted to the external air intake duct 200 Prevents loss.

The ventilator 80 is a component for forcibly exhausting the exhaust gas discharged from the combustion tank 30 to the atmosphere and is connected to the exhaust pipe 31 of the combustion tank 30 through the exhaust chamber 90, And is operated by a controller (not shown) to provide a negative pressure to the exhaust pipe 31, thereby forcibly exhausting the exhaust gas.

The exhaust chamber 90 provides a waste heat recovery space for recovering the waste heat contained in the exhaust gas while providing a space for moving the exhaust gas. The exhaust chamber 90 is formed as a tank as shown in FIG. 1, 31 and the other end thereof is connected to the fan 80 to move the exhaust gas exhausted from the exhaust pipe 31 to the fan 80. [

As shown in FIG. 1, it is preferable that the exhaust chamber 90 is connected to the ventilator 80 while the exhaust pipe 31 is connected to the upper portion. This is for dropping and separating the fine powder (material) contained in the exhaust gas in the exhaust chamber 90.

The fuel preheater 100 recovers waste heat of the exhaust gas moving to the exhaust chamber 90 and supplies the waste heat to the fuel reservoir 10 to remove the moisture of the wood-based fuel stored in the fuel reservoir and raise the temperature, It is a component that promotes improvement.

For example, the fuel preheater 100 may include a waste heat supply pipe 110 and an injection member 120 as shown in FIG.

The waste heat supply pipe 110 is a member for supplying warm air to the fuel reservoir 10. As shown in FIG. 1, one end is connected to the blower 70 and the other end is connected to the fuel reservoir 10 The air in the blower 70 is supplied to the fuel reservoir 10.

1, a portion of the waste heat supply pipe 110 extends through the exhaust chamber 90 and heats the air through waste heat that moves to the exhaust chamber 90, (10).

Here, it is preferable that a portion of the waste heat supply pipe 110 passing through the exhaust chamber 90 is formed in a coil shape while being adjacent to the exhaust pipe 31 as shown in FIG. Accordingly, the heat exchange area of the waste heat supply pipe 110 with the exhaust gas exhausted from the exhaust pipe 31 increases and can be smoothly heated.

The injection member 120 is a component that is installed in the fuel reservoir 10 and injects the warm air supplied to the waste heat supply pipe 110 into the fuel reservoir 10.

The injection member 120 may include a connection pipe 121 and a spray pipe 122 as shown in FIG.

The connection pipe 121 is installed on the side wall of the fuel reservoir 10 in a tubular shape and connected to the waste heat supply pipe 110 to supply warm air.

The connection pipe 121 may divide the warm air of the waste heat supply pipe 110 in a plurality of forms according to the size or shape of the fuel reservoir 10 or may be directly connected to the waste heat supply pipe 110 .

2, the spray pipe 122 extends into the storage space of the fuel reservoir 10 with one end connected to the connection pipe 121, and the hot air supplied to the connection pipe 121 is injected into the storage space do.

The injection pipe 122 preheats the woody fuel while injecting hot air into the storage space of the fuel reservoir 10 through the injection holes 122a formed through the longitudinal direction.

2, the injection holes 122a are formed through the lower portions of both sides of the injection pipe 122 while being paired with each other as shown in FIG. 2, and are formed to pass through the injection pipe 122 in the longitudinal direction.

Meanwhile, the injection pipes 122 may be provided along the longitudinal direction of the connection pipe 121 in a plurality of depending on the size and shape of the fuel reservoir 10, or alternatively may be formed of a single number.

The fuel preheater 100 of the present invention may further include a warm air controller 130 as shown in FIG.

The warm air controller 130 is a component for preventing the overheating of the fuel by controlling the warm air supplied through the waste heat supply pipe 110 according to the temperature and humidity inside the fuel reservoir 10.

For example, the warm air controller 130 may include an on / humidity sensor 131 and an on / off valve 132 as shown in FIG.

The ON / humidity sensor 131 is installed inside the fuel reservoir 10 to detect the internal temperature and humidity and provide the controller to an unshown controller.

The open / close valve 132 is openably and closably provided in the waste heat supply pipe 110, and opens and closes the waste heat supply pipe 110 while operating under the control of the controller by the detection signal of the on / humidity sensor 131, .

That is, the warm air controller 130 opens the waste heat supply pipe 110 through the opening / closing valve 132 to preheat the fuel when the data sensed by the temperature / humidity sensor 131 is below the permissible temperature or above the permissible humidity, When the data sensed by the humidity sensor 131 is equal to or higher than the allowable temperature or is lower than the permissible humidity, the waste heat supply pipe 110 is closed through the opening / closing valve 132 to shut off the supply of the warm air.

The present invention may further include a dust collector 95 as shown in FIG.

The dust collector 95 is a component for dropping the fine particles contained in the exhaust gas to the bottom of the exhaust chamber 90 and separating them.

3, the dust collector 95 is installed in the exhaust chamber 95 while being adjacent to the exhaust pipe 31. The dust collector 95 has a cyclone shape in which the diameter of the dust collector 95 becomes narrower toward the lower side, And the gas is transferred to the fan (80).

That is, the dust collector 95 separates the fine particles from the exhaust gas by centrifugal force by rotating the exhaust gas, and drops it to the bottom of the exhaust chamber 90.

3, when the dust collector 95 is installed, a portion of the waste heat supply pipe 110 may be wound and extended in the form of a coil along the outer circumferential surface of the dust collector 95.

As described above, according to the heating apparatus having the fuel preheating system according to the present invention, the waste heat discharged to the exhaust chamber 90 is supplied to the fuel reservoir 10 by the fuel preheater 100, Even if the fuel reservoir 10 is installed at a high humidity level, moisture of the fuel can be removed and the combustion efficiency can be improved.

A part of the waste heat supply pipe 110 constituting the fuel preheater 100 is heated by the exhaust chamber 90 to supply warm air to the injection member 120 installed in the fuel reservoir 10, The fuel can be smoothly preheated by the warm air and moisture can be removed.

The present invention is also applicable to the case where the opening and closing valve 132 constituting the warm air controller 130 opens and closes the waste heat supply pipe 110 in accordance with the detection signal of the temperature / humidity sensor 131 provided in the fuel reservoir 10, It is possible to prevent consumption of wood-based fuel and further prevent overheating of wood-based fuel.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

10: fuel storage device 20: fuel transfer device
30: combustion tank 40: boiler body
50: Grate 50a: Air supply space
60: Igniter 70: blower
80: Aerator 90: Exhaust chamber
95: Dust collector
100: fuel preheater 110: waste heat supply pipe
120: injection member 121: connection pipe
122: jetting tube 122a: jetting hole
130: warm air controller 131: temperature / humidity sensor
132: opening / closing valve

Claims (6)

A fuel reservoir for storing woody fuel;
A combustion tank having an exhaust pipe through which the fuel of the fuel reservoir is supplied and burned to provide heat and the exhausted exhaust gas is exhausted to the outside;
A blower for supplying outside air into the combustion tank;
An exhaust fan for forcibly exhausting the exhaust gas exhausted from an exhaust pipe of the combustion tank;
An exhaust chamber connecting the ventilator and the exhaust pipe of the combustion tank to provide a space for recovering waste heat contained in the exhaust gas while forming a path for moving the exhaust gas; And
And a fuel preheater for preheating the fuel in the fuel storage while supplying waste heat of the exhaust gas to the exhaust chamber to the fuel storage,
The fuel pre-
The other end of which is connected to the fuel reservoir and supplies air of the blower to the fuel reservoir, and a part of the air is heated by the waste heat of the exhaust chamber while passing through the inside of the exhaust chamber, A waste heat supply pipe for supplying warm air to the furnace; And
And a spraying member connected to the other end of the waste heat supply pipe in a state where it is installed in the fuel reservoir and spraying the warm air supplied to the waste heat supply pipe into the fuel storage device. .
delete The method according to claim 1,
Wherein the injection member
At least one connection pipe installed at a side wall of the fuel reservoir and connected to the waste heat supply pipe; And
At least one spray pipe extending into the storage space of the fuel reservoir at one end thereof communicably connected to the connection pipe and having a plurality of spray holes formed in a longitudinal direction thereof to spray warm air through the spray holes; And a fuel preheating system including the fuel preheating system.
The method according to claim 1,
The fuel pre-
And a warm air controller for controlling supply of hot air through the waste heat supply pipe while opening / closing the waste heat supply pipe according to temperature or humidity inside the fuel reservoir.
The method of claim 4,
The hot-
A temperature / humidity sensor installed inside the fuel reservoir; And
And a shut-off valve installed in the waste heat supply pipe for opening / closing the waste heat supply pipe while being operated by a detection signal of the temperature / humidity sensor.
The method according to claim 1,
The heating device includes:
And a dust collector installed in the exhaust chamber to drop the fine particles contained in the exhaust gas to the bottom of the exhaust chamber while rotating the exhaust gas moving to the fan,
The waste heat supply pipe,
Wherein a portion of the exhaust chamber extending through the inside of the exhaust chamber extends in the form of being wound along an outer circumferential surface of the dust collector.

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