KR20060042633A - Gas burner of clothes dryer - Google Patents

Abstract

The present invention relates to a gas combustion apparatus of a dryer, which is easy to manufacture a funnel gas combustion is generated in the gas combustion apparatus and hot air is generated, there is almost no defect in the production, the parts connected to both edges can be smooth. It would be.

The present invention for this purpose, the hot air supply duct for guiding the hot air to the drum to be put into the drying object; Composed of a gas combustion unit that receives the gas from the outside mixed with the primary air and combusts, and a cylindrical funnel installed in front of the gas combustion unit to guide the hot air generated by the gas combustion unit to the hot air supply duct In a dryer having a gas combustion device, the funnel provides a gas combustion device of the dryer, wherein both edges thereof are interconnected by seaming.

Dryer, gas burner, funnel, seaming, seaming

Description

Gas burner of clothes dryer

1 is a perspective view showing the structure of a funnel for a gas combustion device of a conventional dryer

2 is an exploded perspective view showing an example of the configuration of a dryer to which the gas combustion device of the present invention is applied;

3 is a perspective view of an embodiment of the gas combustion device of FIG.

Figure 4 is a perspective view showing another embodiment of the funnel for gas combustion apparatus according to the present invention

5 is a side view of the funnel of FIG.

6A and 6B are cross-sectional views taken along lines I-I and II-II of FIG. 5, respectively.

Explanation of symbols on the main parts of the drawings

20, 120: Funnel 20a, 120a, 120b: seaming part

22: gas nozzle 23: gas pipe

24: mixing tube 25: valve assembly

The present invention relates to a dryer, and more particularly, to a gas combustion apparatus for producing hot air by burning a gas so as to dry the dried matter put into a drum.

In general, a dryer is a device that blows hot air generated by a heater into a drum to absorb moisture of a drying object and to dry the drying object. Such a dryer generates hot air by heating the air using an electrothermal heater that generates heat by electric energy, or by heating the air by heat generated when the gas of the gas combustion device is burned.

A dryer using a gas combustion apparatus has a funnel for guiding hot air generated by gas combustion toward a gas supply passage connected to a drum.

The funnel has a conical duct shape with both ends open, as shown in FIG. 1 of the accompanying drawings.

The funnel 200 is manufactured by rolling a flat metal plate to face each other's edges and then welding the contact portions.

However, when welding in the state in which both edges of the funnel 200 abut each other as described above, there is a problem that the welding operation is difficult, the productivity is worse, a lot of defects in the welding process. In addition, since the welded part remains in a sharp state, there is a problem that work is likely to be hurt during the assembly process or damage to other structures.

The present invention is to solve the above problems, an object of the present invention is easy to manufacture a funnel in which gas combustion and hot air generation in the gas combustion device, there is almost no defect during the production, both edges are connected It is to provide a gas combustion device of a dryer so that the parts can be smoothly connected.

The present invention for achieving the above object, and a hot air supply duct for guiding hot air to the drum into which the object to be dried; Composed of a gas combustion unit that receives the gas from the outside mixed with the primary air and combusts, and a cylindrical funnel installed in front of the gas combustion unit to guide the hot air generated by the gas combustion unit to the hot air supply duct In a dryer having a gas combustion device, the funnel provides a gas combustion device of the dryer, wherein both edges thereof are interconnected by seaming.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the gas combustion device of the dryer according to the present invention will be described in detail.

Figure 2 is an exploded perspective view showing the main configuration of the dryer to which the gas combustion device of the present invention is applied, the dryer comprises a structure in which the drum (1) is provided inside the cabinet (not shown) constituting the appearance. The drum 1 is formed in a cylindrical shape so that the front and rear sides are opened, and a belt groove 2 around which a belt (not shown) driven by a separate driving source is wound.

A drying chamber 5, which is a space in which drying proceeds, is formed in the drum 1, and inside the drum 1, the object to be dried in the drying chamber 5 is dragged up when the drum 1 is rotated. A plurality of lifters 6 are formed to invert the object to be dried, thereby increasing the drying efficiency.                     

The front supporter 7 and the rear supporter 9 are provided to correspond to the front end and the rear end of the drum 1, respectively. Here, the front supporter 7 and the rear supporter 9 serve to block the front and rear of the drum 1 to form a drying chamber 5 and to support the front and rear ends of the drum 1, respectively. .

At this time, a sealing material 10 is installed between the front supporter 7 and the rotating drum 1 and between the rear supporter 9 and the rotating drum 1 to prevent leakage. Of course, the front supporter 7 and the rear supporter 9 are provided with a plurality of rollers (not shown) for supporting the drum 1 at corresponding positions at the front and rear of the drum 1, respectively. .

On the other hand, the front supporter (7) is formed with a through hole (8) for communicating the drying chamber 5 and the outside. The through hole 8 is selectively opened and closed by a door (not shown).

In addition, a hot air supply duct 12 is installed in the rear supporter 9, and the hot air supply duct 12 serves as a passage for supplying hot air to the drying chamber 5. In communication with

In addition, one side of the front supporter 7 corresponding to the lower end of the through hole 8 of the front supporter 7 is provided with an outlet assembly 13 which is a portion through which the air escapes from the drying chamber 5. In addition, the outlet assembly 13 is provided with a lint filter 14.

The lint filter 14 serves to filter foreign matter (for example, seams or dust) mixed in the air exiting the drying chamber 5.                     

On the other hand, the lint duct 15 is installed in communication with the outlet assembly 13, the lint filter 14 is located to the interior of the lint duct 15. A blower 17 is installed to be connected to the lint duct 15 to suck air from the drying chamber 5 through the lint duct 15. The blower 17 is installed inside the blower housing 18.

One side of the blower housing 18 communicates with the lint duct 15, and the other side is connected to the exhaust pipe 19. Therefore, the air exiting the drying chamber 5 and passing through the lint duct 15 is discharged to the outside through the exhaust pipe 19 by the blowing action of the blower 17.

On the other hand, the funnel 20 (Guide funnel) is connected to the inlet side of the hot air supply duct (12). The funnel 20 serves to guide the hot air generated by the combustion of the gas to the inlet side of the hot air supply duct.

In addition, a gas combustion unit 21 is installed at the inlet side of the funnel 20 to mix and combust the gas supplied from the outside and the primary air.

Here, the gas combustion unit 21, as shown in Figure 3, the gas pipe 23 for supplying gas from an external gas supply source, and the gas nozzle for injecting the gas supplied through the gas pipe 23 ( 22), a mixing tube 24 in which the gas injected from the gas nozzle 22 and the primary air are mixed, and a valve assembly 25 for controlling the injection of the gas through the gas nozzle 22, and mixing It is composed of a spark plug 26 installed in the outlet of the tube 24 to generate a spark for ignition.

The mixing tube 24 is installed in such a state that its outlet portion has entered a predetermined distance from the inlet of the funnel 20.

On the other hand, the funnel 20 is formed in a conical shape in which both ends are open and the diameter decreases from the inlet side to the outlet side.

The funnel 20 is connected to each other by seaming processing in a state where both edges of the metal plate are rolled to face each other. For convenience, the seamed and dried portion seaming as described above is referred to as seaming portion 20a.

In this embodiment, the seaming portion 20a is processed to protrude outward from the inlet end to the outlet end of the funnel 20, so that the inner surface of the funnel 20 is smoothly continued.

However, as shown in another embodiment in FIGS. 4-6B, the seaming portions 120a, 120b are located at predetermined points of the funnel 120, strictly speaking, the inlet portion of the hot air supply duct 12 (see FIG. 2). On the basis of the point connected to the seaming portion 120a located at the inlet side of the funnel, the seaming portion 120b positioned at the outlet side is preferably protruded inward.

As described above, when the seaming parts 120a and 120b are formed such that the inlet side of the funnel 120 protrudes outward and the outlet side protrudes inward, the inlet side of the funnel 120 is smoothly connected to the inner surface so that air flow is not disturbed and smooth. It can keep the flow. On the other hand, on the outlet side, the outer surface of the funnel 120 is smoothly connected without a protrusion, so that the funnel 120 is inserted between the hot air supply duct 12 and the funnel 120 when the funnel 120 is inserted into the inlet of the hot air supply duct 12. It is possible to maintain excellent airtightness without a gap.

Referring to the operation of the dryer having the configuration as described above are as follows.                     

After putting an object to be dried (eg, laundry cloth) into the drying chamber 5 formed in the drum 1 and closing the door, pressing the operation button causes the belt wound around the belt groove 2 to be driven to a separate driving source. The drum 1 is rotated while being driven.

Then, the blower 17 is operated to suck the air of the drying chamber 5 through the lint duct 15. In this case, external air is introduced into the drying chamber 5 through the hot air supply duct 12 due to the pressure difference.

At this time, the air supplied to the hot air supply duct 12 is heated by a gas combustion device to enter a relatively high temperature state.

That is, gas is injected into the mixing tube 24 through the gas nozzle 22, and primary air flows into the inlet of the mixing tube 24, and the gas is mixed with the gas in the mixing tube 24. The primary air is mixed and is first ignited and burned by the spark plug 26 at the outlet of the mixing tube 24. As such, the heat energy generated by the combustion of the gas heats the air introduced into the funnels 20 and 120 to make hot air.

On the other hand, the hot air flows into the drying chamber 5 formed inside the drum 1 through the hot air supply duct 12. Then, the hot air introduced into the drying chamber 5 absorbs the moisture contained in the laundry cloth, and then exits the drying chamber 5 through the outlet assembly 13. At this time, the air exiting from the drying chamber 5 through the outlet assembly 13 is made by the suction force of the blower 17. In addition, foreign matters such as dust or seams contained in the air exiting the outlet assembly 13 are filtered while passing through the lint filter 14.

As described above, according to the present invention, since the funnel gas burning in the gas combustion device is manufactured by the seaming processing, not only is it easy to manufacture, but there is little defect in manufacturing, and the edges connected to both edges are smooth and smooth. Can be connected.

Claims (5)

A hot air supply duct for guiding hot air to a drum into which a drying object is inserted; A gas combustion unit which receives gas from outside and mixes and combusts with primary air, and a cylindrical funnel installed in front of the gas combustion unit to guide the hot air generated by the gas combustion unit to the hot air supply duct. In a dryer provided with a combustion device, The funnel is a gas combustion device of the dryer, characterized in that both edges are interconnected by seaming processing. 2. The gas combustion apparatus of claim 1, wherein the seamed and dried portion of the funnel is formed to protrude to the outside of the funnel. The gas combustion apparatus of claim 1, wherein the seamed and dried portions are formed to protrude in opposite directions with respect to the funnel face based on any one point of the funnel. According to claim 3, wherein the one portion of the funnel, the portion close to the gas combustion portion is seamed and the dried portion protrudes outward, the end portion of the funnel inserted into the hot air supply duct is seamed Gas burner of the dryer, characterized in that the dried portion protrudes inward. The gas combustion apparatus of claim 1, wherein the funnel is formed in a conical shape which gradually decreases in diameter toward the distal end.

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