KR100795416B1 - Gas heater and dryer therewith - Google Patents

Abstract

A gas heater and a dryer having the same are provided to shorten time and reduce cost for manufacturing the dryer by arranging an inlet hole and a connection unit between a guide pipe and an intake pipe. A gas heater includes a cabinet(50), a drum(60), a gas pipe(130), a nozzle and a valve(150), a mixing pipe(120), a spark plug, a guide pipe(110), an intake pipe(70), an auxiliary suction port, and a connection unit. The drum is arranged in the cabinet. The gas pipe is arranged along the cabinet, and supplies gas into the cabinet. The nozzle and the valve are mounted on the gas pipe. The mixing pipe is mounted on the nozzle to mix gas and air. The spark plug is arranged outside the mixing pipe. The guide pipe is arranged outside the mixing pipe so as to guide hot air into the drum. The intake pipe is arranged between the guide pipe and the drum. The auxiliary suction port is formed at the guide pipe so as to permit air to flow into the guide pipe from the cabinet. The intake pipe has one end having an inlet hole with a diameter relatively larger than that of the guide pipe. The connection unit is interposed between the inlet hole and the guide pipe.

Description

GAS HEATER AND DRYER THEREWITH}

1 is a configuration diagram showing a flow path structure of a dryer according to the prior art.

Figure 2 is a partial cutaway perspective view of a dryer according to the prior art.

Figure 3 is a block diagram showing a dryer having a gas heater according to an embodiment of the present invention.

4 is an exploded perspective view showing a gas heater according to an embodiment of the present invention.

5 is a partially enlarged view illustrating a mixing tube of a gas heater according to an embodiment of the present invention.

6 is a perspective view showing a suction amount adjusting means of the gas heater according to an embodiment of the present invention.

7 is a perspective view showing a bracket of a gas heater according to an embodiment of the present invention.

8 is a perspective view showing a guide tube mounting structure of the gas heater according to an embodiment of the present invention.

9 is a plan view illustrating a suction passage of a dryer having a gas heater according to an embodiment of the present invention.

10 is a side sectional view showing a circulation passage of a dryer having a gas heater according to an embodiment of the present invention.

11 is a plan view illustrating an exhaust passage of a dryer having a gas heater according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

50: cabinet 54: discharge port

60 drum 62 support panel

62a: through hole 64a: outlet

70: intake pipe 80: exhaust pipe

82: exhaust fan 84: connector

86 housing 90 drive motor

100: heater 110: guide tube

120: mixing tube 124: mixing section

130 gas pipe 140 nozzle

150: valve 160: bracket

170: spark plug 180: flame holder

190: suction amount control means 200: seating means

230: fastening means 300: connection means

310: support 312: locking portion

320: seating groove

The present invention relates to a gas heater, and in particular, by improving the structure of the guide tube to which the mixture of gas and air is moved, it is easy to install the guide tube, the gas heater to prevent the inside from overheating more than necessary and It relates to a dryer having this.

1 is a configuration diagram showing a flow path structure of a dryer according to the prior art, Figure 2 is a partial cutaway perspective view showing a dryer according to the prior art.

1 and 2, the dryer according to the prior art forms the appearance of the dryer and the case (2) is formed in the front door to the object, the rotatable disposed inside the case (2) and the blood inside The drum 12, which is opened in the front-rear direction so that the dry matter is accommodated and the air passes therethrough, the heater 18 which is disposed inside the case 2 and heats the sucked air, and passes through the heater 18 An intake duct 20 for guiding heated air to the rear of the drum 12, an exhaust means 22 for discharging the turbid air while drying the object to the outside of the case 2, and the exhaust means ( 22 is provided with a blowing fan (not shown), a motor (not shown) and a belt 40 for rotationally driving the drum 12 and the blowing fan.

A lifter 11 is disposed on the inner circumferential surface of the drum 12 to lift and drop the object to be dried.

The exhaust means 22 has a lint duct 25 through which air in the drum 12 is sucked and a filter 24 is mounted to filter foreign matter, and the lint duct 25 communicates with the blower fan 30. It consists of a fan housing 26 enclosing the exhaust housing and an exhaust duct 27 having one end communicating with the fan housing 26 and the other end disposed outside the case 2.

Looking at the operation of the prior art configured as described above are as follows.

First, after the object is put into the drum 12, the door is closed and the dryer is operated. As the motor is driven, the drum 12 and the blowing fan rotate, and the heater 18 is also operated. Done.

At this time, as the drum 12 is rotated, the dry matter in the drum 12 is lifted by the lifter 11 and falls. In addition, the outside air is heated by high temperature and low humidity air while being sucked into the inside of the heater 18 by the blowing force generated when the blowing fan is rotated, and then the inside of the drum 12 through the intake duct 20. Is discharged.

After the high temperature and low humidity air supplied into the drum 12 is in direct contact with the object to be dropped, the air is dried and moved to the front end side of the drum 12 while being converted into air of low temperature and high humidity. It is discharged out of the dryer through the exhaust duct 27.

However, the dryer according to the prior art has a problem that it is difficult to shorten the time it takes for the heater to heat up after the drying operation is started because the coil is heated by the supply of electrical energy installed inside the pipe communicating with the intake duct. In addition, since relatively expensive electrical energy is used as a heat source, it is difficult to reduce the time and cost required for the drying operation.

The present invention has been made to improve the above problems of the prior art, it is an object of the present invention to provide a gas heater and a dryer having the same to reduce the time and cost required for the drying operation by reducing the preheating time.

In addition, an object of the present invention is to provide a gas heater and a dryer having the same, which can prevent the air supplied to the object to be dried from being heated more than necessary.

The gas heater according to the present invention for solving the above problems is a cabinet, a drum installed inside the cabinet, a gas pipe installed in the cabinet to supply gas into the cabinet, nozzles and valves installed in the gas pipe, the nozzle A mixing tube installed in the mixing tube to mix gas and air, an ignition plug installed outside the mixing tube to generate a flame, and a guide tube installed outside the mixing tube to guide the heated air into the drum, and the guide tube. And an intake pipe installed between the drum and the auxiliary intake port formed in the guide pipe to introduce air into the cabinet.

In addition, an end of the intake pipe corresponding to the guide tube of the present invention is formed with an inlet hole having a relatively large diameter compared to the diameter of the guide tube, the connection means is provided between the inlet hole and the guide tube It is characterized by.

In addition, the auxiliary suction port of the present invention is characterized in that a portion of the guide tube circumferential surface is cut.

In addition, the auxiliary suction port of the present invention is characterized in that the circumferential surface of the guide tube is cut in a 'c' shape and the cut portion is bent to the outside of the guide tube.

In addition, the connecting means of the present invention is characterized in that it comprises a plurality of supports extending from the edge of the inlet hole to the center side, and a seating recess formed in the guide tube corresponding to the support.

In addition, the support of the present invention is characterized in that the end corresponding to the seating groove portion is bent a predetermined amount is formed a locking portion forming the end of the curved surface.

In addition, a dryer having a gas heater according to the present invention includes a cabinet, a drum installed inside the cabinet, a gas pipe installed in the cabinet and supplying gas into the cabinet, nozzles and valves installed in the gas pipe, and the nozzle. A mixing tube installed to mix gas and air, an ignition plug installed outside the mixing tube to generate a flame, a guide tube installed outside the mixing tube to guide heated air into the drum, and the guide tube; And a gas heater including an intake pipe installed between the drums, and an auxiliary intake port formed in the guide pipe and into which air in the cabinet flows.

Hereinafter, an embodiment of a gas heater and a dryer having the same according to the present invention will be described in detail with reference to the accompanying drawings.

For convenience of explanation, the dryer will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator.

Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 3 is a block diagram showing a dryer having a gas heater according to an embodiment of the present invention.

Referring to FIG. 3, the dryer according to the present invention forms a predetermined space, an opening is formed at one side, and a cabinet 50 formed with an inlet (not shown) and an outlet 54 is rotatably installed inside the opening. A drum (60) in which laundry is stored, a plurality of lifters (60a) installed on the inner wall of the drum (60) to rotate the laundry, and an air inlet pipe for guiding the air inside the cabinet (50) to the drum (60); 70, a heater 100 provided on one side of the intake pipe 70, an exhaust fan 82 (see FIG. 10) provided between the drum 60 and the discharge port 54, an exhaust fan 82 and the discharge port. The exhaust pipe 80 provided between the 54 and the drive motor 90 (refer FIG. 10) connected with the rotating shaft of the exhaust fan 82 is comprised.

Thus, when power is supplied to the driving motor 90 by the user's operation, the exhaust fan 82 is rotated to circulate air, and the air introduced through the suction port is converted into hot air while passing through the heater 100. Then, the drum 60 is supplied into the drum 60 along the intake pipe 70, and the drying or sterilization operation of the laundry is performed while contacting the laundry in the drum 60.

Thereafter, the air discharged by the exhaust fan 82 is discharged to the outside through the discharge port 54 of the cabinet 50 along the exhaust pipe 80, thereby circulating the air.

In addition, the drum 60 is formed in a cylindrical shape with a front surface and a rear surface opened so that the front surface corresponds to the opening of the cabinet 50, and the rear surface is rotatably installed on the support panel 62 having the through hole 62a formed therein. .

Here, the support panel 62 is installed on the rear inner wall of the cabinet 50 so that the drum 60 can be rotatably supported, and the intake pipe 70 is installed in the through hole portion 62a.

In addition, the front panel 64 is provided between the front end of the drum 60 and the opening of the cabinet 50, and a discharge port 64a is formed at the lower end of the front panel 64.

An extension pipe 84 facing the exhaust fan 82 side is provided at this discharge port 64a, and a housing 86 is installed between the extension pipe 84 and the exhaust pipe 80 so that the exhaust fan 82 is rotatably embedded. .

In addition, the intake pipe 70 is formed of a passage extending from the heater 100 to the upper portion of the rear surface of the cabinet 50 corresponding to the through hole portion 62a, so that air introduced from the inside of the cabinet 50 is heated by the heater 100. As it passes through the air over a predetermined temperature is moved along the intake pipe 70 to the upper side of the cabinet 50, it is introduced into the drum 60 through the through-hole portion 62a.

At this time, as the drum 60 connected to the drive motor 90 and the belt (not shown) is rotated so that the contact area of the hot air and the laundry increases, a drying operation or a sterilization operation of the laundry is performed.

Figure 4 is an exploded perspective view showing a gas heater according to an embodiment of the present invention, Figure 5 is a partially enlarged view showing a mixing tube of the gas heater according to an embodiment of the present invention, Figure 6 is a view of the present invention 7 is a perspective view showing a suction amount adjusting means of the gas heater according to an embodiment, Figure 7 is a perspective view showing a bracket of the gas heater according to an embodiment of the present invention, Figure 8 is a gas according to an embodiment of the present invention A guide tube mounting structure of the heater is shown in perspective view.

3 to 8, the heater 100 is installed at one side of the cabinet 50 to supply a gas into the cabinet 50, and a nozzle installed at an inner end of the gas pipe 130 ( 140, a valve 150 installed at one side of the gas pipe 130, a mixing pipe 120 connected to the nozzle 140 to mix gas and air, and a flame installed at the outside of the mixing pipe 120 The spark plug 170 causing the guide pipe, the guide pipe 110 is installed outside the mixing pipe 120 to guide the heated air to a predetermined space, the gas pipe 130, the mixing pipe 120, the guide pipe 110 Is mounted and installed between the bracket 160 installed on one side of the inner wall of the cabinet 50 and the mixing pipe 120 and the guide pipe 110 to form a flame generated by the spark plug 170 larger than a predetermined size. It comprises a flame holder 180 to suppress that.

Thus, when the valve 150 is opened and the gas is supplied to the mixing pipe 120 along the gas pipe 130, the valve 150 is mixed with the air in the cabinet 50 to be injected outside the mixing pipe 120, and at this time, the spark plug 170 Flames are generated by the flames generated from).

The flame generated in this way is controlled by the flame holder 180 so that the size and position of the flame are controlled so that the flame is positioned inside the guide tube 110, so that the air introduced along the guide tube 110 passes through the flame and is heated to a high temperature. The temperature is changed by the hot air of the sprayed to the laundry, so the drying operation is made.

Mixing tube 120 is a mixing unit 124 is formed on one side to allow the air in the cabinet 50 to flow in, the mixing unit 124, the nozzle 140 is coupled to the gas to the mixing tube 124 Inflow is made, and the air in the cabinet 50 is introduced to a predetermined amount.

In addition, the mixing pipe 124 has a pair of coupling ribs 122 formed at both ends, the coupling rib 122 is formed with a hole portion (122a) bolts to the fastening hole portion 162a of the bracket 160 to be described later Are combined by.

Here, the mixing part 124 is formed by the end of the mixing tube 120 is extended, the insertion hole portion 124a is formed in a hollow cylindrical shape forcing the nozzle 140 at the end corresponding to the nozzle 140 Is formed, the inlet hole portion 124b is formed on one side of the circumferential surface air is sucked in the cabinet (50).

As a result, when gas is injected into the mixing unit 124 by the nozzle 140, air inside the cabinet 50 is supplied into the mixing unit 124 through the inlet hole 124b, thereby mixing gas and air. The gas flows along the mixing tube 120 and is injected into the guide tube 110.

The suction amount adjusting means 190 is installed in the mixing part 124 to adjust the amount of air introduced therein, and the suction amount adjusting means 190 is installed inside the inlet hole part 124b to provide the inlet hole part 124b. By varying the size, the amount of air introduced can be controlled.

The suction amount adjusting unit 190 is rotatably installed inside the mixing unit 124 to adjust the size of the inlet hole 124b and the control tube 192 and the gear unit formed at one side of the control tube 192 ( 192c, the long hole portion 196 formed in the mixing portion 124 corresponding to the gear portion 192c, and is inserted into the mixing portion 124 through the long hole portion 196, the gear bit 192c And a driven gear 198 and a driven gear 198 and a geared motor 194.

Here, the control pipe 192 is formed in a cylindrical shape with one side open and hollow inside, the intake hole 192a is formed on the front side corresponding to the insertion hole 124a, the circumference corresponding to the inlet hole 124b The adjustment hole 192b is formed on the surface.

As a result, when the motor 194 is driven, the control tube 192 is rotated by the rotation of the driven gear 198 geared to the rotation shaft of the motor 194, and the adjustment hole 192b of the control tube 192 The size of the inflow hole 124b may vary according to the distance from the inflow hole 124b.

In addition, the gas heater according to the present invention, the gas pipe 130, the mixing pipe 120, the guide pipe 110 is mounted and further includes a bracket 160 is installed on one side of the inner wall of the cabinet 50. The bracket 160 is installed between the bracket 160 and the cabinet 50 to allow the bracket 160 to be placed at the correct position, and is installed between the bracket 160 and the cabinet 50. The fastening means 230 is formed.

Thus, the bracket 160 may be fixed by the fastening means 230 after the bracket 160 is seated at the correct position of the bottom surface of the cabinet 50 by the seating means 200 when the heater 100 is installed. have.

Here, the bracket 160 is formed in a shape of a long frame in the front and rear direction in the shape of the front surface is open in a square, the seating portion 162 and the guide tube formed on the upper surface corresponding to the mixing tube 120 It comprises a support portion 168 formed with a stepped portion at the rear end portion corresponding to the 110, and a fastening hole portion 162a formed at one side of the seating portion 162 to which the mixing pipe 120 is coupled.

In addition, the seating means 200 is formed on the guide protrusions 210 formed at both end portions of the bracket 160 and the inner wall of the cabinet 50 corresponding to the guide protrusions 210 so that the guide protrusions 210 are slid and fitted. The insertion part 220 and the stopper 212 formed by bending the outer end of the guide protrusion 210 are formed.

In addition, the stopper 212 is formed with a coupling groove 214 for cutting the upper portion to allow the gas pipe 130 is seated.

Thus, when installing the heater 100, after installing the mixing pipe 120 and the gas pipe 130 in the bracket 160, the guide protrusion 210 is pushed into the insertion portion 220, the bolt through the through-hole portion 232 When fastening the bolt passing through the through hole 232 is fastened to the coupling hole 234, the mounting of the heater 100 is made.

Flame holder 180 is installed between the mixing tube 120 and the guide tube 110, a plurality of supports 184 extending from one side of the flame holder 180 is coupled to the end of the mixing tube 120, and ignition A cover 188 is formed on one side of the support 184 corresponding to the plug 170 and partitions between the mixing pipe 120 and the spark plug 170.

In addition, the flame holder 180 is a support 184 extends from the main body 182 formed in a ring shape, a plurality of wings 186 protrude radially between the support 184 and the support 184.

Here, the blade 186 is bent at a predetermined angle toward the mixing tube 120 side, the cover portion 188 is a portion of the support 184 is made by extending a predetermined amount in the circumferential direction.

Thus, the mixed gas injected to the outside of the mixing tube 120 is ignited by the spark generated from the spark plug 170, the spark plug 170 as soon as being injected into the outside of the mixing tube 120 by the cover 188. Since the contact is suppressed, the generation of the flame occurs at a predetermined distance away from the mixing tube 120, and the flame generated because the mixed gas injected by the main body 182 and the blade 186 of the flame holder 180 is dispersed. The shape of the guide tube 110 is not formed long, is formed to be collected near the flame holder.

By this action, the flame is collected in the central portion inside the guide tube 110, so that the mixing pipe 120 or the intake pipe 70 can be prevented from being deformed or damaged by the flame.

In addition, the guide tube 110 is provided with an auxiliary suction port 110a through which the air inside the cabinet 50 is introduced, so that the combustion of the inside of the cabinet 50 is further supplied to the flame generated inside the guide tube 110 so that complete combustion is achieved. At the same time, the effect of preventing the air heated by the flame from being overheated more than necessary is generated.

The auxiliary suction port 110a is formed by cutting a portion of the circumferential surface of the guide tube 110, and the auxiliary suction port 110a has a circumferential surface of the guide tube 110 cut in a 'c' shape to guide the cut portion. It is bent to the outside of the tube (110).

As a result, the auxiliary suction port 110a may be easily manufactured, and the direction to be cut is directed toward the mixing pipe 120, and thus, the air suction and the auxiliary suction port 110a may be moved inside the guide pipe 110. Since the direction of the incoming air to be the same so that the inlet of the air through the auxiliary inlet (110a) is made easy.

Here, the inlet pipe 70 is formed at the end corresponding to the guide pipe 110, the inlet hole 70a having a relatively large diameter compared to the diameter of the guide tube 110, the inlet hole 70a and the guide Connection means 300 is installed between the pipe (110).

And, the connecting means 300 is a plurality of support 310 extending from the edge of the inlet hole (70a) to the center side, and the seating groove 320 is formed concave in the guide tube 110 corresponding to the support (310) It is made, including.

Thus, when the guide tube 110 is installed in the intake pipe 70, the inner end of the guide tube 110 is slid into the inlet hole 70 a of the intake pipe 70, so that the end of the support 310 is guide tube ( Sliding along the outer wall of the 110 while being deformed in a certain amount is fitted into the seating groove 320, the shape of the support 310 is restored to its original state, the connection of the guide tube 110 is made.

In addition, the support 310 has an end corresponding to the seating groove 320 is bent to form a locking portion 312 forming the end of the curved surface is formed so that the curved portion 312 along the outer wall of the guide tube 110 Since the sliding between the engaging portion 312 and the guide tube 110 is minimized, the support 310 is easily slid along the outer wall of the guide tube 110 so that the guide tube 110 can be easily installed. do.

Looking at the operation of the gas heater and the dryer having the same according to the present invention configured as described above are as follows.

9 is a plan view illustrating a suction flow path of a dryer having a gas heater according to an embodiment of the present invention, and FIG. 10 is a side view illustrating a circulation path of the dryer having a gas heater according to an embodiment of the present invention. 11 is a cross-sectional view illustrating an exhaust passage of a dryer having a gas heater according to an embodiment of the present invention.

3, 4, and 9 to 11, first, when a user operates a driving button (not shown), power is supplied to the driving motor 90 and the heater 100 to exhaust the exhaust fan 82 and the drum. As the 60 is rotated, the air introduced into the drum 60 along the suction port by the driving of the exhaust fan 82 passes through the suction port and is formed long in the vertical direction on the rear surface of the cabinet 50 ( 70 is moved upwardly of the cabinet 50, where it is heated by the heater 100 with hot dry air of a predetermined temperature or more.

Thereafter, the air introduced into the drum 60 through the through-hole part 62a flows in a tornado shape and contacts the laundry to perform a drying operation.

A discharge port 64a is formed in the front panel 64 provided between the opening of the drum 60 and the inner wall of the cabinet 50, and the air which has undergone the drying operation is discharged to the outside of the drum 60 along the discharge port 64a. Is discharged, flows through the connecting pipe 84 in communication with the discharge port (64a) to the housing (86) of the exhaust fan (82), is moved along the exhaust pipe (80) in the housing (86) through the discharge port (54) Discharged to the outside of the cabinet 50.

Here, looking at the operation of the heater 100, with the start of the drying operation, the valve 150 is opened, the gas is injected into the mixing tube 120 through the nozzle 140, the inlet hole of the mixing unit 124 ( The air inside the cabinet 50 is primarily mixed with gas through 124b.

The mixed gas is injected to the outside of the mixing tube 120, the flame is generated by the spark plug 170 installed on the outside of the mixing tube 120, that is, the inner side of the guide tube 110 is supplied to the intake pipe 70 It is possible to supply thermal energy to the air.

In addition, the flame has a shape that is collected in the central portion of the guide tube 110 by the flame holder 180 to prevent the mixing pipe 120 and the intake pipe 70 is deformed or damaged, which is a flame holder Since the cover portion 188 of 180 divides the mixed gas and the spark plug 170 at the discharge port side of the mixing tube 120, the flame is not formed near the mixing tube 120, and the flame holder 180 Since the mixed gas is dispersed by the main body 182 and the wing 186 of the flame, the shape of the flame is prevented from being formed to the inside of the guide tube 110 to prevent the flame from occurring in the intake pipe 70. do.

At this time, since the air inside the cabinet 50 is introduced through the auxiliary suction port 110a of the guide tube 110, by supplying sufficient air to the flame, it induces complete combustion, and the hot air generated by the flame is intake pipe. When the air flows into the drum 60 through the 70, air inside the cabinet 50 is introduced from the inlet hole 70 a to prevent the air injected into the drum 60 from being overheated.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand.

In addition, although a dryer has been described as an example, this is merely exemplary, and the guide tube of the present invention may be used in a gas heater other than the gas heater used in the dryer.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Gas heater according to the present invention configured as described above is formed by the auxiliary suction port in the guide tube, the supply of sufficient air to the inside of the guide tube where the flame is generated to flow completely combustion, so the energy efficiency of the gas heater is improved drying operation There is an advantage that can reduce the time and cost required.

In addition, the present invention is installed between the guide tube and the intake pipe of the gas heater by the inlet hole and the connecting means, the installation of the guide tube is made easy, thereby reducing the time and cost required for the manufacture of the dryer, heating by the flame Since the air introduced through the inlet hole is mixed, it is possible to prevent the air injected into the drum from being overheated more than necessary, and thus there is an advantage of preventing damage to the fabric during the drying operation or malfunction and breakage of the dryer.

Claims (7)

cabinet; A drum installed inside the cabinet; A gas pipe installed in the cabinet to supply gas into the cabinet; A nozzle and a valve installed at the gas pipe; A mixing tube installed at the nozzle to mix gas and air; An ignition plug installed outside the mixing pipe to generate a flame; A guide tube installed outside the mixing tube so that heated air is guided into the drum; An intake pipe disposed between the guide tube and the drum; An auxiliary suction port formed in the guide tube and into which air in the cabinet flows; And An end of the intake pipe corresponding to the guide tube is formed with an inlet hole having a relatively large diameter compared to the diameter of the guide tube, characterized in that it is provided with a connecting means between the inlet hole and the guide tube. Gas heater. delete The method of claim 1, The auxiliary suction port is a gas heater, characterized in that a part of the circumferential surface of the guide tube is cut. The method of claim 3, wherein The auxiliary suction port is a gas heater, characterized in that the circumferential surface of the guide tube is cut in a 'c' shape and the cut portion is bent to the outside of the guide tube. The method of claim 1, The connecting means is a gas heater, characterized in that it comprises a plurality of supports extending from the edge of the inlet hole to the center side, and a seating recess formed in the guide tube corresponding to the support. The method of claim 5, The support is a gas heater, characterized in that the end portion corresponding to the seating groove is bent a predetermined amount to form a locking portion forming the end of the curved surface. cabinet; A drum installed inside the cabinet; A gas pipe installed in the cabinet to supply gas into the cabinet; A nozzle and a valve installed at the gas pipe; A mixing tube installed at the nozzle to mix gas and air; An ignition plug installed outside the mixing pipe to generate a flame; A guide tube installed outside the mixing tube so that heated air is guided into the drum; An intake pipe disposed between the guide tube and the drum; An auxiliary suction port formed in the guide tube and into which air in the cabinet flows; And At the end of the intake pipe corresponding to the guide tube is formed an inlet hole having a relatively large diameter compared to the diameter of the guide tube, and the gas heater including a connecting means between the inlet hole and the guide tube Dryer characterized in that.

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