JPS59194798A - Dehumidification type dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heat exchange structure of a dehumidifying dryer, particularly a fan.

Structure of conventional example and its problems Conventional dehumidifying dryers of this type introduce hot air into a drum, pass the hot air coming out of the drum through a heat exchanger, and then
Two types of fans were installed independently: a circulation fan that generates circulating air that is reheated by a heating element and returned into the drum, and a cooling fan that cools the heat exchanger. Unfortunately, the impellers that make up each fan,
The fan case and its ventilation path had to be installed separately.In addition, the ventilation path for circulating air normally allows humid air to pass through, condense in the heat exchanger, and cause moisture to get trapped in clothing. In order to gradually remove the moisture that is present in the air, special airtightness and watertightness are required. A solid watertight structure had to be installed at the connection between the drainage channel and the water route.

Conventional dehumidifying dryers use this type of heat exchanger.

Circulation fans, cooling fans, ventilation channels and drainage channels that connect these fans, and many parts to maintain airtightness and watertightness between them are required, making it complicated and requiring a large number of parts in the dryer. In order to maintain long-term performance and maintain quality, it takes a lot of experience and a large amount of man-hours from the assembly workers.
The manufacturing cost was high.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and provides a dehumidifying dryer that has a small number of parts and is simple in structure, and can sufficiently exhibit the desired performance.

Structure of the Invention In order to achieve the above object, the present invention provides a rotating drum for stirring the loaded clothes, a circulation fan for circulating hot air within the rotating drum, and a circulation fan provided integrally with the circulation fan. a double-winged fan consisting of a cooling fan for blowing cooling air; the double-winged fan is configured to exchange heat between the circulating air and the cooling air through its thin plate portion; A groove is formed, and a bendable sealing member having a substantially V-shaped cross section is attached to the U-shaped groove, and a partitioning member is disposed inside the sealing member to partition a circulating air side and a cooling air side. be.

EXAMPLE A sister example of the present invention will be explained below. In the figure, 1 is a body that rotatably supports a drum 2 that rotates and stirs clothing, and 4 is a case that houses the heating element 3. It is. 5
is a double-blade fan, with a boss 6 arranged in the center, a pair of oil-less metals 7 inserted into the boss 6 to rotatably support the double-blade fans, and a U-shaped groove in the outer periphery. 8, and the impeller part 9 which protrudes substantially radially and has a substantially serpentine cross-sectional shape in the circumferential direction is collapsed.The impeller part 9 is made of a relatively thin resin film. The unevenness on one side forms a circulation fan 10 that introduces hot air from the heating element 3 into the drum 2, and the unevenness on the other side forms a circulation fan 10 that introduces hot air from the intake air 1-311 at the rear outer gage 1 of the fuselage 1. , and forms a cooling fan 13 that generates cooling air from an exhaust port 12 on the lower outer wall of the aircraft body 1.This relatively thin resin film allows the circulating air and the cooling air to pass through. Since a thin boundary film is formed, heat transfer takes place through this thin film. That is, this impeller portion 9 plays the role of a heat exchanger.

One side of the double-winged fan 5 forms the circulation fan 1o, and the other side forms the cooling fan 13, but both are integral.

Reference numeral 14 denotes a disk-shaped reinforcing plate that covers the central part of the circulation side of the double-winged fan 6. The outer peripheral edge of this reinforcing plate 14 is screwed and fixed to a mounting boss 15 provided on the double-winged fan 6. It plays a role in correcting distortions.

However, the temperature of the circulating air of the double-blade fan 6 rises, and the warpage of the entire double-blade fan 5 due to the difference in the elongation of the resin on the circulation side and the resin on the cooling side is alleviated.

Reference numeral 16 denotes a fan pulley for driving the double-wing fan 5 provided at the center of the cooling fan 5 1'1j, which is made of a metal plate, and has a circumferentially inclined side surface 17 at the center part c' of the double-wing fan 5.
A fan pulley forming portion is provided, and this inclined side surface 1
7, the fan boob 1)-16 is inserted several times, and the belt 18 for driving the double-winged fan is inserted into the 7-shaped groove formed by both fan boos 17-16, including the inclined side surface. It is hung.

19 is a motor, and its axis is the motor IJ-20.
The fan driving belt 18 is looped between the motor pulley 20 and the fan pulley 16. A drum pulley 21 is fixed to the shaft of the morrow 19, and a V-belt 22 is hung between it and the drum 21i''d I to rotate the drum 2.

Reference numeral 23 denotes a shaft that pivotally supports the double-wing fan 5, and is crimped and fixed to the center of a beam 24 fixed to the rear of the fuselage 1. 25
1] is a second ring provided on the shaft of the double-cylinder fan 5 to restrict the position in the axial direction so as to sandwich the boss 6 at the center of the double-blade fan 5, and the double-blade fan 6 has an appropriate amount of axial play. Gap 2
6 is provided.

27id, a flexible and bendable sealing member having a V-shaped cross section attached to the U-shaped groove 8 formed on the outside and inside of the double-blade fan 5; 28, a fan case constituting the circulation fan side of the double-blade fan 5; -728 is a partition portion 2 integrally formed of resin or the like and forming the outer peripheral edge of the rotating surface of the double-cylinder fan 6.
9 and the circulation air passage 3 generated by the circulation fan 10.
The airtightness of the 41-1 chamber 31 that leads the circulating air to zero, the intake port 32 that takes the circulating air into the circulation fan 10, and the passage that connects the drum 2 to the intake port 32 of the fan case 28 is ensured. A drum seal 33 provided for extrusion is slidably connected to the saccel drum seal part 34 and the cooling channel (on the outer wall of the fuselage 1) at the outer edge of the fan case 28 is connected to the air opening 12.
forming a partition wall 36 constituting a vortex chamber section 35 of a reservoir that leads to
An end surface 37 of the bulkhead 36 is inscribed in the fuselage 1&.

38 has a cross-section shaped like the fan case 28.
The sealing fitting 38 is a metal fitting attached to the inner end V of the partitioning part 29 of the fan case 28, and is provided across the entire inner circumference of the partitioning part 29 of the fan case 28, facing the sealing member 27 of the double-wing fan 5. The narrow gap 3 in the partition plate thickness of the fan case 28
9 and the bent part 40 at one end and the fan case 28.
It is formed by injecting or inserting caulking material or panoging 42 into the V-shaped groove 41 formed by the partition 29.

43 is a reinforcing plate of the fan case 28 that is provided in close contact with the inner wall surface of the peripheral edge 44 of the intake port 32 of the fan case 28;
The center of the reinforcing plate 43 has a reflective surface that is in close contact with the fan case 28 pressed against the retaining ring 25 provided on the shaft 23 of the double-winged fan 5, and the midsection has the circulating air vent 45. ℃, the outer periphery is provided with a chevron-shaped protruding ring 46 facing the inner wall surface of the fan case 28, and is fitted into the recess 47 of the fan 7 ring 28 provided corresponding to this shape, and the four parts of the fan case 28 are fitted. A drum seal 33 adhesively fixed to the tram 2 is pressed and slid onto the outer peripheral wall 48 of the rear surface of the tram 47.

Reference numeral 49 denotes a metal fitting that fastens the nozzle part opening 27 that is attached to the U-shaped groove 8 formed on the outer IJ part of the double-wing fan 5.

During use, when the double-blade fan 6 rotates at high speed, the inner surface of the sealing member 27 mounted in a V-shape comes into sliding contact with the sealing metal fitting 38, resulting in severe wear. Due to this abrasion, the fuzz generated on the felt surface of the sealing member 27 is scattered,
-゛ - This fluff may be carried by the heating elements 3 through the ventilation passage through the heating element 30 case on the circulating wind. If a large amount of this fluff is generated and remains on the ventilation surface of the heating element 3, the amount of circulating air passing through the heating element 3 will be reduced, and as a result, the heating element 3 will not be able to fully exhibit its intended performance.

In other words, the amount of heat generated is significantly reduced and the dryer no longer functions properly. However, in this actual case (in this case, if the felt table
The fuzz that occurs on the surface of the material is burned off with a flame, making the sliding surface relatively smooth.

To explain the function of the dehumidifying dryer in this embodiment, the clothes that are put into the drum 2 and rotated are stirred, and the hot air sent into the tram 2 evaporates the moisture contained in the instep of the clothes, causing the temperature to drop. Double wing fan 6 due to high humidity air
It is sent to the circulation fan side. The double-blade fan 5 removes heat from the circulating air, condenses moisture contained in the circulating air, and returns to the heating element 3 again. The dew-condensed moisture is blown off by the dual handling fan 6, collected in the fan case 28, and is discharged from a drain port (not shown) provided in a part of the ventilation path 30. Such circulation of the lice is repeated, and the clothes are successively dried.

emit] effect Thus, according to the invention, a conventional heat exchanger.

The circulation fan and the cooling fan are composed of a single double-blade fan, and the path from the fan case to the ventilation path and the heating element is simplified, making it possible to realize a dehumidifying dryer with an extremely simple configuration.

In addition, since the two-sided fan is integrally molded with resin, when the circulating air reaches a high temperature, the entire body may warp due to the temperature difference between the circulation of the two-wing fan and the cooling side.
A bendable sealing member having a substantially V-shaped cross section is attached to the U-shaped groove, and a partition side is provided inside the sealing member to partition the circulating air side and the cooling air side. Because it was arranged, both 9J
The outer peripheral edge of the fan does not move in the axial direction, and warping of both blades can be prevented.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a dehumidifying dryer showing a practical example of the present invention, Fig. 2 is an exploded view of the 1iJii wing fan section of the dehumidifying dryer, and Fig. 3 is an exploded view of the suction section of the same dehumidifying dryer. It is an enlarged sectional view. 2...Drum, 3...Heating element, 5...
...Double wing fan, 8...U-shaped groove, 1o...
Circulation fan, 11...Intake port, 13...Cooling fan, 14...Reinforcement plate, 16...Fan pulley, 17...Slanted side surface, 23... -axis, 2
5... Retaining ring, 26... Play, 27... Seal 'J material, 2a-... Fan case, 29...
... Partition part, 30... Ventilation path, 31.35... Vortex chamber part, 33... Drum seal, 36... l'
AA wall, 38... Seal fittings, 42... Caulking example.

Claims (1)

[Scope of Claims] (1) A rotating drum that stirs the loaded clothes, a circulation fan that circulates hot air into the rotating drum, and a cooling device that blows cooling air provided integrally with the circulation fan. a double-winged fan consisting of a fan, the double-winged fan is configured to exchange heat between the circulating air and the cooling air through its thin plate portion, and a U-shaped groove is formed in the outer periphery of the double-winged fan, and A bendable sealing member having a substantially V-shaped cross section is attached to the U-shaped groove, and the double-winged fan has a substantially disk-shaped reinforcing plate on one side of which the outer periphery is fixed to the double-winged fan. A fan boo IJ-forming portion having an inclined side surface is provided on the other side, and a substantially V-shaped groove for belt tensioning is formed by the inclined 111111 surface of the fan pulley forming portion and the corresponding fan pulley. A dehumidifying dryer according to claim 1. (3) The dehumidifying dryer according to claim 1, wherein the sealing member is made of a nonwoven fabric whose surface has been subjected to a burning treatment. (4) The double-blade fan has a play that is movable in the axial direction at its shaft support, and the amount of the play is approximately equal to the amount of deformation in the axial direction of the outer circumference of the double-blade fan. Dehumidifying dryer as described.