JPH10263294A - Duct fastening device for dryer air - Google Patents

Abstract

(57) [Summary] PROBLEM TO BE SOLVED: To provide a blower duct fastening device for fastening a blower duct installed in a dryer such as a clothes dryer, a drum-type washing dryer, a dishwasher, etc. The leakage of hot air at the fitting portion of the duct is eliminated, and the reliability of the seal is improved. SOLUTION: A suction port 22 of a packing member is fitted around an outer circumference of an exhaust port 24 of a heater cover having a substantially rectangular cross section for blowing hot air or the like, and a fitting portion between the exhaust port 24 and the suction port 22 is provided. Is fixed by a fixing bracket 29 so as to cover the outer peripheral surface 25, the fixing bracket 29 curves inward a surface 30 corresponding to the longitudinal direction of the outer peripheral surface 25 of the fitting portion, and a screw fastening portion 31 provided at a distal end portion. It was concluded with.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower duct fastening device for fastening a blower duct installed in a dryer such as a clothes dryer, a drum type washer-dryer, a dishwasher or the like.

[0002]

2. Description of the Related Art Conventionally, this type of dryer, for example, a blower duct fastening device of a drum type washer-dryer has been configured as shown in FIGS. Hereinafter, the configuration will be described.

FIG. 3 is a sectional view of a drum type washer / dryer equipped with a blower duct fastening device. A rotating drum 1 has a large number of water passage holes 2 formed on the outer peripheral surface thereof, and a rotating drum 1 is provided in an outer tub 3. Arranged freely. One end of the rotating shaft 4 is fixed to the rotation center of the rotating drum 1 in a substantially horizontal direction, and a drum pulley 5 is fixed to the other end of the rotating shaft 4. The drive motor 6 is connected to the drum pulley 5 by a belt 7 and drives the rotary drum 1 to rotate.

The outer tub 3 is swingably suspended from the body 8 by a spring body 9, the vibration at the time of dehydration start is reduced by the vibration damper 10, and the vibration during the steady dehydration is prevented from being transmitted to the body 8. It is supported. The substantially cylindrical packing member 11 connects between the opening 13 of the outer tub 3 corresponding to the front opening 12 of the rotary drum 1 and the front opening 14 of the body. A window 15 is provided in the body front opening 14 so as to be openable and closable.

[0005] The blower fan 16 circulates hot air between the heat exchanger 17, the heating unit 18 and the rotating drum 1. Heating unit 1
Reference numeral 8 denotes a heater 19 and a heater cover 20 that holds the heater 19 and guides hot air. Heat exchanger 1
Numeral 7 has a function of guiding tap water as cooling water into a duct for guiding wind to dehumidify. The control device 21 controls operations of the drive motor 6, the blower fan 16, the heater 19, and the like, and sequentially controls a series of processes such as washing, rinsing, dehydrating, and drying.

The heater cover 20 and the suction port 22 of the packing member 11 are joined in a narrow space between the rotary drum 1 and the body front surface 23, and have a substantially rectangular cross section to secure an area required for air blowing. ing. This suction port 2
Numeral 2 is fitted so as to embrace the exhaust port 24 of the heater cover 20, and a substantially rectangular band-shaped fixing bracket 26 is fastened and held on an outer peripheral surface 25 thereof. As shown in FIG. 4, a part of the fixing bracket 26 is open, and a flange 27 is provided at an end of the fixing bracket 26.

[0007] The operation of the drum type washer-dryer in the above configuration will be described. When the window 15 is opened to load laundry into the rotary drum 1 and operation is started, the rotary drum 1 is driven to rotate at a low speed by the drive motor 6 during the washing process, and the laundry in the rotary drum 1 is lifted. It is dropped on the water surface and washing proceeds. The same operation as the washing process is performed in the rinsing process. In the dehydration process, the rotating drum 1 is driven to rotate at high speed, and the laundry is centrifugally dehydrated.

Finally, in the drying process, the rotating drum 1 is driven to rotate at a low speed, and the heater 19 and the blowing fan 1 are rotated.
6 operates to circulate hot air through the rotary drum 1 and the heat exchanger 17. The hot air containing moisture evaporated from the clothes in the rotating drum 1 is cooled and dehumidified by the heat exchanger 17, heated again by the heater 19, enters the rotating drum 1 and circulates to dry the clothes. The hot air flowing into the rotary drum 1 enters from above the front opening 12 and flows below the outer tub 3 so that the hot air uniformly hits the clothes and can be dried most efficiently.

[0009]

In such a conventional structure, the outer tub 3 and the rotary drum 1 are made larger than the size of the body 8, so that the capacity is increased, the drying performance is maintained at a high level, and the circulation is performed. The hot air guide from the heater cover 20 to the rotary drum 1 is formed in a slender, substantially rectangular shape so as not to reduce the amount of hot air. For this reason, the heater cover 20 and the suction port 22 of the packing member 11 also have a substantially rectangular cross section to secure an area required for air blowing.

The suction port 22 is formed integrally with the packing member 11 and is made of rubber. Therefore, the suction port 22 is fitted so as to embrace the exhaust port 24 of the heater cover 20 and substantially fits on the outer peripheral surface 25 thereof. Even if it is held by the rectangular band-shaped fixing bracket 26, there is a problem that the holding force in the longitudinal direction is particularly weak and hot air easily leaks.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to eliminate the leakage of hot air at a fitting portion of a duct having a substantially rectangular cross section and to improve the reliability of a seal.

[0012]

According to the present invention, in order to achieve the above object, a second duct is fitted around the outer periphery of a first duct having a substantially rectangular cross section for blowing hot air or the like, and The outer peripheral surface of the fitting portion between the duct and the second duct is held by a fixing bracket so as to cover the outer peripheral surface, and the fixing bracket is provided at the distal end portion by bending a surface corresponding to the longitudinal direction of the outer peripheral surface of the fitting portion inward. It was fastened with a screw fastening part.

Thus, when the fixing bracket is fastened by the screw fastening portion, the second portion is also provided at the center in the longitudinal direction of the fitting portion.
Can be pressed inward, and even at the fitting portion of the duct having a substantially rectangular cross section, hot air does not leak and the reliability of the seal can be improved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a first duct having a substantially rectangular cross section for blowing hot air and the like, and a second duct fitted to the outer periphery of the first duct. A duct, and a fixture for holding the outer peripheral surface of the fitting portion between the first duct and the second duct so as to cover the outer peripheral surface, and the fixing bracket corresponds to a longitudinal direction of the outer peripheral surface of the fitting portion. The surface is curved inward and fastened by a screw fastening portion provided at the tip portion, and when the fixing bracket is fastened by the screw fastening portion, the second duct is also formed at the center in the longitudinal direction of the fitting portion. Hot air can be prevented from leaking even at the fitting portion of the duct having a substantially rectangular cross section, and the reliability of the seal can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the fixing bracket is provided with a folded portion on one side of a tip portion to form a temporary holding portion for a screw fastening portion. Even if the surface corresponding to the longitudinal direction of the outer peripheral surface of the fitting portion is curved inward and the screw fastening portion at the tip is largely open before fastening, the temporary holding portion temporarily temporarily holds the tip. After fixing, the screw of the screw fastening portion can be easily attached, and the workability can be improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings for a drum type washing and drying machine. Note that the overall configuration of the drum-type washing / drying machine is the same as that of the conventional example, and a description thereof will be omitted.

(Embodiment 1) As shown in FIG. 1, a heater cover 20 holds a heater and guides hot air, and has a substantially rectangular cross section made of a rigid material. The suction port (second duct) 22 of the packing member 11 is
It is formed of a flexible material such as rubber, and is fitted to the outer periphery of the exhaust port (first duct) 24 of the heater cover 20,
They are joined in a narrow space between the rotating drum and the front of the body.

The fixing bracket 29 is partially open,
Exhaust port 24 of heater cover 20 and packing member 11
The surface 30 corresponding to the longitudinal direction of the outer peripheral surface 25 of the fitting portion with the suction port portion 22 is curved inward, a screw fastening portion 31 provided at the distal end portion is provided, and it is fastened and fixed with a screw 32. doing.

In the above configuration, the operation will be described with reference to the entire configuration of the drum type washing and drying machine shown in FIG. 3. In the drying process, the rotating drum 1 is driven to rotate at a low speed, and the heater 19 and the blowing fan The hot air circulates through the rotary drum 1 and the heat exchanger 17 by the operation of 16. The hot air containing moisture evaporated from the clothes in the rotating drum 1 is cooled and dehumidified by the heat exchanger 17, heated again by the heater 19, enters the rotating drum 1 and circulates to dry the clothes. At this time, the hot air flowing into the rotary drum 1 enters from above the front opening 12 and flows below the outer tank 3, so that the hot air uniformly hits the clothes and can be dried most efficiently.

In the drying process, the heater cover 20
Since the internal pressure of the blower fan 16 is applied to the fitting portion between the exhaust port 24 and the suction port 22 of the packing member 11, a sealing property is required so as not to leak steam or the like.

The fitting portion between the exhaust port 24 of the heater cover 20 and the suction port 22 of the packing member 11 is
And the fixing bracket 29 is fixed to the outer peripheral surface 2 of the fitting portion.
5 is curved inward and the distal end is largely open, so that it can be easily inserted into the outer peripheral surface 25, and even if one screw fastening portion 31 is provided, the outer peripheral surface 2 of the fitting portion can be inserted.
5 can be pressed inward by the surface 30 corresponding to the longitudinal direction, so that hot air does not leak even at a fitting portion having a substantially rectangular cross section, and the reliability of the seal can be improved.

(Embodiment 2) As shown in FIG. 2, the fixing bracket 33 has a surface 34 corresponding to the longitudinal direction of the outer peripheral surface of the fitting portion between the exhaust port 24 of the heater cover 20 and the suction port 22 of the packing member 11. Is bent inward, and a folded portion 35 is provided on one side of the distal end portion to form a screw fastening portion 36,
It is configured to be fixed with screws 32. Other configurations are the same as those in the first embodiment.

The operation of the above-described structure will be described. In the mounting operation of the fixing bracket 33, since the distal end is largely open, it can be easily inserted into the outer peripheral surface 25 of the suction port 22 of the packing member 11, and the distal end can be attached. The workability can be improved by attaching the screw 32 to the screw fastening portion 36 after temporarily holding the folded portion 35 to the opposite end portion 37 by pressing it down.

In each of the above embodiments, the duct for hot air blowing of the drum type washing and drying machine has been described. However, the duct for air blowing provided in a clothes dryer, a dishwasher and the like can be similarly configured. The operation and effect of the present invention can be obtained.

[0025]

As described above, according to the first aspect of the present invention, the first duct having a substantially rectangular cross section for blowing hot air or the like is fitted to the outer periphery of the first duct. A second duct, and a fixing bracket for holding the outer peripheral surface of the fitting portion between the first duct and the second duct so as to cover the outer peripheral surface of the fitting portion. Since the surface corresponding to the direction is curved inward and fastened with the screw fastening part provided at the tip, when fastening the fixing bracket with the screw fastening part,
The second duct can be pressed inward even in the central portion in the longitudinal direction of the fitting portion, and even in the fitting portion of the duct having a substantially rectangular cross section, hot air does not leak,
The reliability of the seal can be improved.

According to the second aspect of the present invention, since the fixing bracket is provided with a folded portion on one side of the distal end portion to form a temporary holding portion for the screw fastening portion, the length of the outer peripheral surface of the fitting portion is long. Even if the surface corresponding to the direction is curved inward and the screw fastening part at the tip part is largely open before fastening, the temporary holding part temporarily temporarily fixes the tip part, and then the screw fastening part Screws can be easily attached, and workability can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a blower duct fastening device of a dryer according to a first embodiment of the present invention, which is partially cut away.

FIG. 2 is a perspective view of a fixing fitting of a duct fastening device for a blower of a dryer according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of a conventional drum-type drying washing machine having a blower duct fastening device.

FIG. 4 is an exploded perspective view of the blower duct fastening device of the dryer, with a portion cut away.

[Explanation of symbols]

 22 Suction port of packing member (second duct) 24 Exhaust port of heater cover (first duct) 25 Outer peripheral surface 29 Fixing bracket 30 Surface 31 Screw fastening portion

Claims (2)

[Claims] 1. A first duct having a substantially rectangular cross section for blowing hot air or the like, a second duct fitted on an outer periphery of the first duct, and a first duct and a second duct. A fixture for holding the outer peripheral surface of the fitting portion so as to cover the outer peripheral surface of the fitting portion. A duct fastening device for the dryer that was fastened in the section. 2. The duct fastening device for a dryer according to claim 1, wherein the fixing member is provided with a folded portion on one side of a tip portion to form a temporary holding portion for a screw fastening portion.