JP2005177505A - Washing machine cum drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine cum drying machine that improves the drying performance by minimizing the flow rate of hot air and heat loss and prevents damage to a gasket and the shortening of life. <P>SOLUTION: This washing machine cum drying machine is equipped with a tub (60) supported on a cabinet (50), a drum (70) rotatably arranged inside the tub and in which a through hole (72) is formed, a condensation duct (80) connected to one side of the tub, a heater (85) connected to the condensation duct, a heater duct 90 having a fan (87) built therein and a connecting duct (100) communicating with the heater duct and the tub so as to guide air passing through the heater duct into the interior of the tub. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dryer / dryer, and more particularly, to a dryer / dryer that supplies air heated through a heater duct directly into a tub without supplying it through a gasket. .

Generally, a washing machine is a device that removes contaminants such as clothes and bedding (hereinafter referred to as 'cloth') by the action of detergent and water (hereinafter referred to as 'washing water'), It is classified into a dryer and a washing machine for both dryers.
FIG. 1 is a partially cutaway side cross-sectional view showing the inside of a conventional dryer and washing machine.
As shown in FIG. 1, the conventional washing machine combined with a dryer includes a cabinet 2, a tab 10 that is installed in the cabinet 2 and stores washing water, and is rotatably positioned in the tab 10. a drum 20 that accommodates m, a motor 30 that supports and rotates the drum 20, and the air in the drum 20 is sucked, condensed, and heated, and then circulated in the drum 20 to dry the cloth m again. And a drying device 40.

The cabinet 2 is formed with an entrance / exit hole 3 through which the cloth m is taken in / out, and a door 4 for opening / closing the entrance / exit hole 3 is mounted.
The door 4 includes a door frame 4a that is rotatably connected to the cabinet 2, and a door glass 4b that is attached to the door frame 4a and has a convex shape toward the rear.

The tab 10 is suspended by a spring 5 connected to the upper part of the cabinet 2 and is placed on a damper 6 attached to the lower part of the cabinet 2 so as to be supported in a bufferable manner.
The tub 10 is connected to a water supply device 12 that supplies wash water supplied from the outside into the tub 10, and a drain device 14 that drains the wash water inside the tub 10 to the outside.
When the door 4 is closed, the tab 10 is fitted with a gasket 16 that is in close contact with the door 4 and prevents outflow of the cloth m, washing water, and air.

The gasket 16 is formed with a cylindrical drying device connection port 18 connected to the drying device 40 so as to protrude on one side.
The drying device connection port 18 is formed on the outer peripheral surface of the gasket 16 so as to protrude in the radial direction.
The drum 20 is formed with an entry / exit hole 21 through which the cloth m, washing water and air enter and exit, and a through hole 22 through which the washing water and air enter and exit.

The motor 30 is supported by a bearing with a rotating shaft passing through the tab 10, and a tip of the motor 30 is connected to the drum 20.
The drying device 40 includes a condensing duct 42 connected to one side of the tub 10, a cooling water valve 43 that controls cooling water, and a cooling that is connected to the cooling water valve 43 and causes cooling water to flow through the condensing duct 42. The water injection port 44 is connected to the condensing duct 42, and includes a drying duct 48 that incorporates a circulation fan 45 and a drying heater 46 and circulates high-temperature and low-humidity air inside the drum 20.
The outlet end of the heater duct 48 is fixed by being inserted into or removed from the drying device connection port 18 of the gasket 16.

Hereinafter, the operation of the conventional dryer and washing machine configured as described above will be described.
First, after the cloth m is put into the drum 20, when the door 4 is closed and the washing machine is operated, the washing machine supplies washing water through the water supply device 12.
Next, the supplied washing water is supplied and stored in the tub 10 and flows into the drum 20 through the inlet / outlet 21 or the through hole 22 of the drum 20 so that the cloth is immersed.

When the motor 30 is driven after the water supply, the drum 20 rotates and the cloth m in the drum 20 flows inside the drum 20, so that the cloth m and the washing water The action causes the pollutant to fall.
After the washing process is completed, the washing machine drains the contaminated washing water in the tab 10 through the drainage device 14 to the outside of the washing machine.

On the other hand, the washing machine performs the rinsing process for rinsing the foam remaining on the cloth m a plurality of times, and, similarly to the washing process, controls the water supply device 12 and the motor 30 to rinse the foam remaining on the cloth, The contaminated water containing is drained to the outside of the washing machine through the drainage device 14.
The washing machine performs the rinsing process a plurality of times, and then performs a dehydration process of centrifugally dehydrating the water of the cloth m.

Next, after the dehydration process, the washing machine operates the drying device 40 to dry the cloth m.
During the drying process, the washing machine drives the motor 30 to rotate the drum 20 and turns on the cooling water valve 43, the circulation fan 45, and the heater 46.
Cooling water flows into the condensing duct 42 when the cooling water valve 43 is turned on, and low-temperature and humid air in the drum 20 is sucked into the condensing duct 42 through the tab 10 by the rotation of the circulation fan 45. Then, it is condensed by the cooling water while passing through the condensation duct 42.

  The air that has passed through the condensing duct 42 is heated by the heater 46 while passing through the heater duct 48 to be changed into hot air, and this hot air passes through the drying device connection port 18 of the gasket 16 and passes through the heater 16. After being discharged inside and hitting the door glass 4b of the door 4, it is blown toward the drum 20 to dry the cloth, thereby changing to low-temperature and humid air.

  However, in the conventional washing machine, since the drying device 40 is connected to the gasket 16, the structure of the gasket 16 becomes complicated, and hot air passes through the gasket 16 and hits the door glass 4b, and then toward the cloth m. Therefore, there is a problem in that the hot air inflow passage is complicated, and the flow rate and heat loss are large.

  Further, when the gasket 16 is deformed by the vibration of the tab 10 or the drum 20 and the hot air inflow passage is deformed or closed, the hot air that has passed through the heater duct 48 is less likely to flow into the drum 20, There was a problem that the gasket 16 was damaged by hot air.

The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a dryer and washing machine capable of improving the drying performance by minimizing the flow rate and heat loss of hot air.
It is another object of the present invention to provide a dryer and washing machine that can prevent gasket damage and life reduction.

  To achieve the above object, a dryer and washing machine of the present invention includes a tab supported by a cabinet; a drum that is rotatably disposed inside the tab and has a through hole; and one side of the tab A condensing duct connected to the condensing duct; a heater duct connected to the condensing duct and including a heater and a blower fan; the heater duct and the tab so that air passing through the heater duct is guided into the tub And a connecting duct communicated with each other.

  The dryer and washing machine according to the present invention further includes a heater duct gasket that is installed between the heater duct and the connection duct and seals between the heater duct and the connection duct. Features.

  The dryer and washing machine according to the present invention further includes a tab gasket that is installed between the connection duct and the tab and seals between the connection duct and the tab. .

  The connection duct is fastened to the upper portion of the front surface of the tab by a fastening bolt.

  A boss is formed on the front upper portion of the tab, and the connection duct is fastened to the boss with a fastening bolt.

  The tab is characterized in that a first communication hole communicating with the condensing duct is formed on one side, and a second communication hole communicating with the connection duct is formed on the other side.

  The connecting duct is characterized in that a protrusion is inserted into the second communication hole.

  The connection duct is fastened to the heater duct with fastening bolts.

  The drum is characterized in that a plurality of hot-air passage holes are formed so that the hot air that has passed through the connecting duct travels straight into the drum.

  In the dryer and washing machine of the present invention, the heater duct having the heater and the blower fan built in is connected to the condensing duct, and the connecting duct for guiding the air that has passed through the heater duct to the inside of the tab is connected to the heater duct and the tab. Thus, there is an effect that the drying performance can be improved by minimizing the flow rate and heat loss of the hot air.

  Further, in the washing machine combined with the dryer of the present invention, the air that has passed through the heater duct passes through the connecting duct without passing through the gasket. Therefore, the damage to the gasket that occurs when the air that has passed through the heater duct passes through the gasket. In addition, there is an effect that the lifetime can be prevented from being reduced.

  Further, the dryer and washing machine of the present invention is configured such that a heater duct gasket is installed between the heater duct and the connecting duct, and a tab gasket is installed between the connecting duct and the tab. Has the effect of minimizing.

  In the dryer and washing machine of the present invention, the connecting duct is fastened to the upper front portion of the tab by a fastening bolt and fastened to the lower end side of the heater duct by the fastening bolt. There is an effect that there is.

  In addition, the washing machine with a dryer according to the present invention has a plurality of hot air passage holes formed in the drum so that the hot air that has passed through the connecting duct travels straight into the drum, so that air flows smoothly. Thus, the drying performance can be improved.

Hereinafter, embodiments of a washing machine combined with a dryer according to the present invention will be described with reference to the drawings.
FIG. 2 is a partially cutaway sectional view showing a first embodiment of a washing machine combined with a dryer according to the present invention, and FIG. 3 is a partially exploded view showing a first embodiment of a washing machine combined with a dryer according to the present invention. It is a perspective view.

  As shown in FIGS. 2 and 3, the dryer and washing machine according to the present embodiment includes a cabinet 50 that forms the appearance of a dryer and washing machine, and a tab 60 that is supported in the cabinet 50 so as to be buffered. A drum 70 that is rotatably arranged inside the tab 60 and accommodates a cloth, a condensing duct 80 that communicates with one side of the tab 60, a condensing duct 80, and a heater 85 and a blower fan 87. A drying duct 86 communicated with the other side of the tab 60 is configured so that the air that is built in and heated by the heater 85 is directly blown into the tab 60.

  The cabinet 50 includes a bottom plate 52, a cabinet body 54 installed above the bottom plate 52, a cabinet cover 56 installed on the front surface of the cabinet body 54, and a top cover installed on the top surface of the cabinet body 54. 58.

The cabinet cover 56 is formed with a cloth inlet / outlet 56a through which the cloth is taken in / out, and a door 56b for opening / closing the cloth inlet / outlet 56a is rotatably connected by a hinge.
On the upper side of the cabinet cover 56 or on the upper surface of the top cover 58, a control panel 59 for operating the dryer and washing machine is installed.

The tab 60 has a cylindrical shape that is horizontally or inclined at a predetermined angle. An opening 61a is formed at the rear of the cloth inlet / outlet 56a, is connected to the cabinet body 54 by a spring 61b, and is connected to the bottom plate 52 with a damper. Connected at 61c.
A water supply device 62 for supplying washing water is connected to the tab 60, and a drainage device 63 for discharging contaminated washing water or water dehydrated from the cloth m to the outside of the washing machine. The

  The water supply device 62 is connected to an external hose 62a and controls a wash water supplied from the external hose 62, a water supply valve 62b for guiding the wash water that has passed through the water supply valve 62b, and the water supply A detergent basket 62d through which the washing water guided by the hose 62c passes and a water supply bellows pipe 62e for guiding the washing water that has passed through the detergent basket 62d to the tab 60 are included.

  The drainage device 63 is connected to the tab 60 and guides the washing water or water in the tab 60, and the drainage pump 63b that pumps the washing water or water guided by the drainage bellows pipe 63a. And a drainage hose 63c that guides the washing water or water pumped by the drainage pump 63b to the outside of the washing machine combined with the dryer.

  On the other hand, the tab 60 is formed with a first communication hole 64a that communicates with the condensing duct 80 so that the air inside the tab 60 flows out into the condensing duct 80. A second communication hole 64 b communicating with the drying duct 86 is formed so as to directly flow out to the tab 60.

The first communication hole 64 a is formed on the back surface of the tab 60.
The second communication hole 64 b is formed in the front surface portion of the tab 60.
The second communication hole 64 b is formed in the upper front portion of the tab 60.

The tab 60 is mounted with drum driving means for supporting and rotating the drum 70.
The drum driving means may be configured by a motor that is mounted on the back surface of the tab and directly rotates the drum, the front end of the drum is connected to the drum side through the back surface of the tab, and the rear end is the tab. A drive shaft 65 projecting rearward of the motor 60, a motor 66 mounted on the tab 60, a drive pulley 67 installed on the rotating shaft of the motor 66, and a follower installed on the rear end of the drive shaft 65. The pulley 68 and the belt 69 wound around the drive pulley 67 and the driven pulley 68 can also be configured, and hereinafter, the drive shaft 65, the motor 66, the drive pulley 67, the driven pulley 68, and the belt 69 are configured. The explanation will be limited to the above.

  The drum 70 has a cylindrical shape that is positioned horizontally or inclined at a predetermined angle inside the tab 60, and an opening 71 through which cloth m and washing water is taken in and out is formed at the center of the front surface. A through-hole 72 through which washing water or air flows in and out is formed on at least one side of the back surface, and a lifter 73 that drops after lifting the cloth m is mounted on the inner peripheral surface.

Hereinafter, the through-hole 72 will be described as being limited not only to the periphery of the drum 70 but also to the back surface.
Meanwhile, the drum 70 is formed with a plurality of hot air passage holes 74 so that the hot air blown directly into the tab 60 through the drying duct 86 goes straight into the drum 70.

The plurality of hot air holes 74 are formed in the front portion of the drum 70.
The condensing duct 80 has a lower end communicating with the first communication hole 64a of the tab 60, and is disposed up and down beside or behind the tab 60, or is inclined at a predetermined angle. It communicates with the rear end of the drying duct 86.

The condensing duct 80 is provided with cooling water supply means for supplying cooling water therein.
The cooling water supply means is connected to a cooling water injection port 81 formed in the condensing duct 80 and an external hose 82 so as to guide the cooling water into the condensing duct 80, and is supplied through the external hose 82. A cooling water valve 83 that controls the cooling water B, a cooling water hose 84 that is connected to the cooling water valve 83 and guides the cooling water that has passed through the cooling water valve 83 to the inside of the cooling water injection port 81; It is comprised including.

  The drying duct 86 has one end communicating with the condensation duct 80 and the heater duct 90 including the heater 85 and the blower fan 87, one end communicating with the heater duct 90, and the other through the second communication hole 64b. And a connecting duct 100 whose ends communicate with each other.

The heater duct 90 is disposed long on the upper side of the tab 60 in the front-rear direction, the rear end thereof is in communication with the condensing duct 80, the heater 85 and the blower fan 87 are disposed therein, and the front end side is the front surface of the tab 60. Folded in an “L” shape in front of the part.
The heater duct 90 is provided with a fan motor 88 to which the blower fan 87 is axially coupled.

The fan motor 88 is configured by a brushless direct current motor (BLDC motor) that varies the rotational force.
The connection duct 100 has an elbow shape, and an upper end communicates with the interior of the heater duct 90 and a rear end communicates with the second communication hole 64 b of the tab 60.
The connection duct 100 is formed with a protrusion 111 that is inserted into the second communication hole 64b when the connection duct 100 is connected to the tab 60.

The dryer and washing machine further includes a tab gasket 110 that is installed between the connection duct 100 and the tab 60 and seals between the connection duct 100 and the tab 60.
The dryer and washing machine further includes a heater duct gasket 120 that is installed between the heater duct 90 and the connection duct 100 and seals between the heater duct 90 and the connection duct 100.

In the figure, reference numeral 95 indicates that the heater duct 90 is mounted with fastening bolts and installed on the upper side of the tab 60 so as to minimize the transfer of the heat of the heater duct 90 to the tab 60 side. It is a fixed bracket.
In the figure, reference numeral 130 is disposed between the opening 61 a of the tab 60 and the cloth entrance / exit hole 56 a of the cabinet cover 56, and the cloth m, washing water, and air flow out between the tab 60 and the cabinet cover 56. It is a gasket which prevents it from being done.
In the figure, reference numerals 132 and 134 denote left and right balance weights that are mounted on both sides of the front surface of the tab 60 and are spaced apart from each other by a width larger than the width of the connection duct 100 so that the connection duct 100 is connected to the tab 60. It is.

FIG. 4 is a perspective view showing a state before the connecting duct of FIG. 3 is attached to the tab and the heater duct.
As shown in FIG. 4, the connection duct 100 is fastened to the upper front portion of the tab 60 by fastening bolts 101 and 102.
Left and right fastening bosses 61f and 61g formed with fastening holes 61d and 61e are spaced apart and protrude forward from the upper side of the opening of the tab 60. The left and right lower fastening pieces 103, 104 formed with fastening holes 103a, 104a that coincide with the fastening holes 61d, 61e of the bosses 61f, 61g are projected.

When the connection duct 100 is connected to the tab 60, the tab gasket 110 is fitted to the outside of the protrusion 111 of the connection duct 100, and the protrusion 111 of the connection duct 110 is connected to the second communication of the tab 60. When inserted into the hole 64b, the connecting duct 100 is brought into close contact with the tab 60 with the tab gasket 110 interposed therebetween.
At this time, in the connecting duct 100, the protrusion 111 is locked to the second communication hole 64b in the front-rear and left-right directions to restrict the movement thereof, and the assembly position is determined.

That is, the fastening hole 103a of the left lower fastening piece 103 of the connection duct 100 coincides with the fastening hole 61d of the left fastening boss 61f, and the fastening hole 104a of the right lower fastening piece 104 of the connection duct 100 and the right fastening boss. The 61g fastening hole 61e matches.
Thereafter, the first fastening bolt 101 is fastened to the fastening hole 103a of the left lower fastening piece 103 and the fastening hole 61d of the left fastening boss 61f, and the second fastening bolt 102 is fastened to the fastening hole 104a and right fastening of the right lower fastening piece 104. When fastened to the fastening hole 61e of the boss 61g, the connecting duct 100 is simply and quickly connected to the tab 60.
Meanwhile, the connecting duct 100 is fastened to the heater duct 90 by fastening bolts 105 and 106.

  Left and right lower fastening pieces 91 and 92 formed with fastening holes 91a and 92a protrude from both side surfaces of the front end of the heater duct 90, and upper portions of both sides of the upper end of the connection duct 100 are provided with the heater duct 90. The left and right upper fastening pieces 107, 108 formed with fastening holes 107a, 108a corresponding to the fastening holes 91a, 92a of the left and right lower fastening pieces 91, 92 are projected.

  When connecting the connecting duct 100 to the heater duct 90, the heater duct gasket 120 is placed between the upper end of the connecting duct 100 and the outlet of the heater duct 90, and the upper left side of the connecting duct 100. With the fastening hole 107a of the fastening piece 107 and the fastening hole 91a of the left lower fastening piece 91 of the heater duct 90 aligned, the third fastening bolt 105 is connected to the fastening hole 91a of the left lower fastening piece 91 and the left upper fastening piece. The fourth fastening bolt 106 is fastened to the fastening hole 107a of the 107, and the fastening hole 108a of the right upper fastening piece 108 of the connection duct 100 is aligned with the fastening hole 92a of the right lower fastening piece 92 of the heater duct 90. Are fastened to the fastening hole 92a of the right lower fastening piece 92 and the fastening hole 108a of the right upper fastening piece 108.

Hereinafter, the operation of the washing and washing machine of the present invention configured as described above will be described.
First, during the washing process, the dryer and washing machine supplies the washing water to the tab 60 by the water supply device 62, and the washing water supplied to the tab 60 is supplied to the opening 71 or the through hole 72 of the drum 70. The cloth is soaked by being introduced into the drum 70 through.
When the motor 66 is driven in a state where the washing water is supplied as described above, the drum 70 rotates and the cloth inside the drum 70 is flowed by the lifter 73, thereby causing contamination of the cloth. Will fall.

After the washing process is completed, the dryer and washing machine drains the contaminated washing water in the tab 60 to the outside by the drainage device 63.
In addition, during the rinsing process, the washing machine combined with the dryer is configured such that the water supply device 62 supplies new washing water to the tab 60, and the new washing water supplied to the tab 60 passes through the opening 71 or the passage of the drum 70. The cloth is immersed by being introduced into the drum 70 through the hole 72.

When the motor 66 is driven in a state where new washing water is supplied as described above, the drum 70 rotates, and the cloth inside the drum 70 is flowed by the lifter 73 so that it remains on the cloth. The foam is rinsed out.
The dryer and washing machine drains the contaminated washing water in the tab 60 to the outside by the drainage device 63 after the rinsing process is completed.

Also, during the dehydration process, in the washing machine combined with the dryer, the drum 70 is rotated at a high speed by the motor 66 being driven at high speed, and the cloth inside the drum 70 is brought into close contact with the inner peripheral surface of the drum 70 to perform centrifugal dehydration. The water that has been centrifugally dehydrated from the cloth is drained to the outside of the washing machine by the drainage device 63.
Meanwhile, during the drying process, the dryer and washing machine drives the motor 66 to rotate the drum 70, and the cloth m in the drum 70 is flowed inside the drum 70 by the lifter 73. .

Further, the washing machine combined with the dryer turns on the cooling water valve 83 and the heater 85 and drives the fan motor 88 to rotate the blower fan 87.
Inside the condensing duct 80, the cooling water B flows when the cooling water valve 83 is turned on, and the air A in the drum 70 is flowed by the rotation of the blower fan 87, and is cooled by contact with the cloth m. Change to humid.

The low-temperature and humid air A in the drum 70 passes through the through hole 72 and is moved to the outside of the drum 70, and is moved to the inside of the condensation duct 80 through the first communication hole 64 a of the tab 60.
The low-temperature and high-humidity air A that has been moved to the condensation duct 80 is condensed by the cooling water B that has flowed into the condensation duct 80, changes to low-temperature and low-humidity, and is moved into the heater duct 90.

The air A moved to the inside of the heater duct 90 is heated by the heater 85 to be changed into hot air of high temperature and low humidity, and is moved to the inside of the connection duct 100.
The hot air A moved to the connection duct 100 passes through the second communication hole 64b of the tab 60 and is directly moved to the inside of the tab 60, and the hot air passage hole 74 of the drum 70 or the opening 71 of the drum 70. And move to the inside of the drum 70 to remove the moisture of the cloth m by contact with the cloth m.
Thereafter, the air A in the drum 70 dries the cloth m while repeating the circulation / condensation / heating as described above.

It is the sectional side view which showed the conventional drying machine combined washing machine. 1 is a side sectional view showing a first embodiment of a washing machine combined with a dryer according to the present invention. 1 is a partially cutaway perspective view showing a first embodiment of a washing machine combined with a dryer according to the present invention. It is the perspective view which showed the state before the connection duct of FIG. 3 was mounted | worn with a tub and a heater duct.

Explanation of symbols

50 Cabinet 60 Tab 61f Left fastening boss 61g Right fastening boss 61a Opening 62 Water supply device 63 Drainage device 64a First communication hole 64b Second communication hole 70 Drum 71 Opening 72 Through hole 73 Lifter 74 Through hole 80 Condensation duct 82 Cooling water valve 84 Cooling water hose 85 Heater 87 Blower fan 88 Fan motor 90 Heater duct 91 Left lower fastening piece 92 Right lower fastening piece 94 Duct body 96 Upper cover 100 Connection duct 111 Protruding part 101, 102 Fastening bolt 103 Left lower fastening piece 104 Right lower fastening Piece 105, 106 Fastening bolt 107 Left upper fastening piece 108 Right upper fastening piece 110 Gasket for tab 120 Gasket for heater duct 130 Gasket 132 Left balance weight 134 Right balance weight Door

Claims (10)

With tabs supported by the cabinet;
A drum that is rotatably disposed inside the tab and has a through hole;
A condensing duct connected to one side of the tab;
A heater duct connected to the condensing duct and including a heater and a blower fan;
A connecting duct communicated with each of the heater duct and the tub so that air passing through the heater duct is guided into the tub;
A washing machine combined with a dryer, characterized by comprising   The washing machine according to claim 1, further comprising a tab gasket that is installed between the connecting duct and the tab and seals between the connecting duct and the tab.   The washing machine for a dryer according to claim 1, further comprising a gasket for a heater duct installed between the heater duct and the connecting duct and sealing between the heater duct and the connecting duct. Machine. A gasket for a tab installed between the connection duct and the tab and sealing between the connection duct and the tab;
2. The combined dryer according to claim 1, further comprising: a heater duct gasket that is installed between the heater duct and the connection duct and seals between the heater duct and the connection duct. Washing machine.   The dryer as claimed in claim 1, wherein the connecting duct is fastened to a front upper portion of the tab by a fastening bolt. A boss is formed on the front upper portion of the tab,
6. The dryer and washing machine according to claim 5, wherein the connecting duct is fastened to the boss by a fastening bolt.   The first tab is formed on one side of the tab so as to communicate with the condensing duct, and the second communicating hole of the tab is formed on the other side. Dryer combined washing machine.   The washing machine with a dryer according to claim 7, wherein the connecting duct is formed with a protrusion inserted into the second communication hole.   2. The dryer / dryer according to claim 1, wherein the connecting duct is fastened to the heater duct by a fastening bolt.   10. The hot air passing through the connecting duct is formed in the drum so that a plurality of hot air holes are formed in the drum. 10. Dryer combined washing machine.

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