JPH03178697A - Dryer - Google Patents

Abstract

PURPOSE:To improve cooling performance or drying performance by providing a first circular groove group, which is integrally formed concentrically to one surface on a drying air path side and a cooling air path side, and a second circular groove group to be loosely fitted to the first circular groove group, and providing a fan, which is equipped with the same function as that of a fan provided on the surface of a side opposite to the second circular groove group, on the back of the second circular groove group. CONSTITUTION:An outer-most peripheral wall 79a of a rotary groove group 79 is protruded on the cooling air path side and a cooling fan 73 is extended to the back side of the rotary groove group 79 so as to be continued to this outer-most peripheral wall 79a. The diameter of the cooling fan 73 is enlarged only for L and the amount of cooling air is increased for the increased diameter. Then, a cooling effect is improved and dehumidifying performance by a double-side fan 71 is made satisfactory. On the other hand, a cooling fan 72 is extended to the back side of the rotary groove group 79 and recessed parts 1... are formed on the back of the cooling fan 72 in the rotary groove group 79. Then, the cross-sectional area of the air dust is enlarged in labyrinth coupling and however, by installing a rib 2 in the recessed part 1, a seal effect is prevented from being lowered.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a dryer.

(b) Conventional technology Conventionally, a heat exchange type double-sided fan is used to circulate drying air into the drying chamber, while introducing external air as cooling air, and the drying air and cooling air are heated by the fan. A so-called dehumidifying clothes dryer that removes moisture by replacing the drying air and then reheats the drying air with a heater and supplies it to the drying chamber is disclosed in Japanese Patent Publication No. 60-56318. In Japanese Patent Application No. 189108/1989, the applicant has proposed a groove for preventing drying air from leaking into the cooling chamber. This will be explained based on FIGS. 7 to 8.

51 is a machine frame of a clothes dryer 52, 53 is a front plate fixed to the front side of the second machine frame 51, and an Iλ inlet 54 for clothes is provided in the center. Reference numeral 55 denotes a rear plate fixed to the rear surface of the machine frame 5I, and has an external air introduction hole 56 in the center and an outlet 57 in the lower part. 58 is a door for opening and closing the input port 54; 59 is an annular sheet metal drum support plate installed in the machine frame 51 so as to surround the input port 54; 60 is a door at the rear of the machine frame 51; , is installed in the lateral direction so as to be spaced apart from the rear plate 55! An L-shaped support plate 61 is a fan casing 12 fixed to the support plate 60, so that the inside of the machine frame 51 is
It is divided into a drying chamber 62 and a fan chamber 63. 64 is a horizontal shaft type drum disposed within the drying chamber 62;
It is supported by the drum support plate 59 via felt or the like with the front opening facing the input port 54,
The rear side is rotatably supported by a shaft 63. 66...
. is a dry air outlet provided at the center of the rear surface of the drum 64, 67 is a lint filter that filters this outlet 66, 68...
- is a drying air inlet provided at the lower part of the drum support plate 59; 69 is provided on the support plate 6o, and 69 is provided in the drying chamber 62;
A communication port 70 that communicates between the dry air outlet 66 and the fan chamber 63 is a sealing member that reliably sends the air from the dry air outlet 66 to the communication port 69.

Reference numeral 71 denotes a disk-shaped double-sided fan made of synthetic resin fixed to the shaft 65 in the fan chamber 63, and a circulation fan 72 located on the drying chamber 62 side and a circulation fan 72 located on the rear plate 55 side. The cooling fans 73 are formed integrally with each other in a radial manner, and a pulley 74 is integrally formed in the central portion on the side of the cooling fan. 75 is a synthetic 1B resin partition plate provided in the fan casing 61 so as to surround the double-sided fan 71;
By housing the double-sided fan 71 in the circular opening at the center of the partition plate 75 and the double-sided fan 71
The interior of the fan chamber 63 is divided into a drying air passage 77 and a cooling air passage 78.

Now, at the periphery of the double-sided fan 71, the drying air passage 7
A concentric rotating groove group 79 that opens toward the cooling air passage 78 is integrally formed, while a concentric fixing groove group that opens toward the cooling air passage 78 is formed on the inner peripheral edge of the partition plate 75. 80 are integrally formed, and the rotating groove group 79 is connected to the fixed groove group 8.
0, they are loosely fitted in a non-contact state. That is, the rotating groove group 79 and the fixed groove group 80 form a labyrinth connection. 81 is within the labyrinth bond;
This is a drainage hole that directs the dehumidified water that has fallen to the drying air path side.

Although not shown, a screw boss is provided on the back side of the fixing groove group 8o and is screwed onto the wall of the opposing drying air passage, so there is a possibility that the partition plate 75 may warp due to heat or the like. is extremely small.

82 is the lower part of the drying air passage 77 and the drying air inlet 68.
It is a drying duct that connects the..., and a heating heater 83 is disposed inside. 84 is a discharge port provided at the bottom of the duct 82 to discharge the dehumidified water condensed in the duct to the outside of the machine; 85 is a drive motor, which is connected to the pulley 74 via a small boob 186 and a belt 87; It is also connected to the drum 64 via a boot 9 (not shown) and a belt.

Therefore, during drying, the driving force of the drive motor 85
The drum 64 is rotated at a low speed and the double-sided fan 71 is rotated at a high speed in one direction, and at the same time, the heater 83 is energized to heat the drying air.

As a result, the wind generated by the rotation of the circulation fans 72 is transferred to the drying air passage 77, the drying duct 82, the drum 6
4 and exchanges heat with the material to be dried in the drum 64. Additionally, due to the rotation of the supplementary cooling fan 73...
Outside air is introduced into the cooling air passage 78 from the introduction holes 36 and is led out from the outlet 57, at which time the double-sided fan 71 is cooled. After heat exchange, the drying air is cooled by contacting the double-sided fan 71, and moisture in the drying air is condensed, flows down the drying air path 77, and is discharged from the outlet 84. During this time, the drying air passage 77 and the cooling air passage 7
8 is sealed by the labyrinth connection.

(c) 5 Problems that Akira is trying to solve In the conventional example, the sealing effect between the drying air path and the cooling air path is good due to the labyrinth connection between the fixed groove group and the rotating groove group. Since the double-sided fan is provided with a group of rotating grooves, there is a problem in that the diameter of the fan becomes small, the air volume decreases, and both drying performance and cooling performance deteriorate.

The present invention relates to an improvement of a dryer and is intended to solve such problems.

(d) Means for Solving the Problems The present invention circulates drying air in a drying chamber using a heat exchange type double-sided fan molded from a synthetic resin material, and
The dryer introduces external air as cooling air, and removes moisture by exchanging heat between the drying air and the cooling air using the double-sided fan, and the drying air path and the cooling air path are connected together with the double-sided fan. arranged around the double-sided fan for partitioning,
and a synthetic resin type partition plate having an opening in the center for arranging the double-sided fan, and a parallel plate on one side of the drying air path side and the cooling air path side along the periphery of the opening of this partition plate. a first annular groove group integrally molded, and a first annular groove group integrally molded in the same shape along the outer peripheral edge of the double-sided fan;
a second groove group that is loosely fitted into the annular groove group, and a fan having the same function as the fan on the surface opposite to the surface where the second annular groove group is provided; It is installed at the back of the group.

(E) Effect: When the second annular groove group is provided on the drying air path side, a fan with the same function as the cooling fan is provided on the back side of the second annular groove group, and the cooling fan is effectively Increase the diameter and increase the cooling air volume.

Further, when the second annular groove group is provided on the surface on the cooling air path side, a fan having the same function as the circulation fan is provided on the back side of the second annular groove group to increase the actual diameter of the circulation fan. , increase the drying air volume.

(F) Embodiment An embodiment of the present invention will be explained based on FIGS. 1 to 4. However, since the configuration other than the double-sided fan is the same as that of the conventional example, the same reference numerals will be used and the explanation will be omitted.

In this embodiment, the outermost peripheral wall 79a of the rotary groove group 79 is made to protrude toward the cooling air path, and the cooling fan 73 is connected to the outermost peripheral wall 79a.
It extends to the back side of the rotary groove group 79 so as to be continuous with a. Therefore, the diameter of the cooling fan 73 is increased by L compared to the conventional one, and the cooling air volume increases accordingly.
The cooling effect is enhanced, and the dehumidification performance of the double-sided fan 71 is improved.

On the other hand, by extending the cooling fan 72 to the back side of the rotary groove group 79, a recess l.
... is formed, and the cross-sectional area of the air path within the labyrinth joint increases, but ribs 2... are formed within the recesses 1...
By erecting the recess 1, the cross-sectional area of the air passage at the recess 1 is reduced and the sealing effect is prevented from deteriorating.

FIGS. 5 and 6 each show a different embodiment.

That is, in FIG. 5, a large number of plate-like ribs 3 are formed in the radial direction on the back side of the rotary groove group 79, and are connected to the end surface 73a of the cooling fan 73. These plate-like ribs 3... reinforce the rotating groove group 79 and the outer peripheral wall 73a and prevent thermal deformation of both during drying. In other words, when dry,
Since the temperature of the drying air path 77 yen increases, the double-sided fan 71 tends to warp toward the cooling air path, but the plate-like ribs 3 reduce and prevent such deformation. do. Furthermore, the plate-like ribs 3 rotate together with the double-sided fan 71 and contribute to the generation of cooling air, increasing the amount of cooling air and improving dehumidification efficiency.

FIG. 6 shows an enlarged area of the plate-like ribs 3 in FIG. 5 to further increase the amount of cooling air.

In the above embodiment, the substantial diameter of the cooling fan 73 is increased to increase the cooling air volume, but if the rotating groove group 79 is provided on the surface on the cooling air path side,
The circulation fan 72 is provided up to the back side of the rotating groove group 79,
The drying air volume may be increased.

(g) If the structure of the dryer has the effect of light + 5F2 light, it is possible to increase the cooling air volume or drying air volume while ensuring a good sealing effect due to the labyrinth combination. Improved performance can be achieved.

[Brief explanation of drawings]

FIG. 1 shows a seventh embodiment of the dryer according to the present invention.
Figure 2 is a diagram corresponding to part A of Figure 7, and Figure 3 is a diagram corresponding to part B of Figure 7.
The figure is a perspective view of the double-sided fan as seen from the cooling air path side, FIG. 4 is a perspective view of the double-sided fan as seen from the drying air path side, FIGS. The figure is a sectional view of the internal mechanism of a conventional clothes dryer, FIG. 8 is a rear view of the cooling air passage, and FIG. 9 is a sectional view of the fan chamber. 3...Plate rib (fan), 71...Double-sided fan, 75
・・Partition plate, 76・・Opening, 77・・Drying air path, 78・
・Cooling air passage, 79...Rotating groove group (second annular groove group), 80
... Fixed groove group (first annular groove group).

Claims (1)

[Claims] (1) A heat exchange type double-sided fan made of synthetic resin circulates drying air into the drying chamber, and external air is introduced as cooling air, and the drying air and cooling air are exchanged by the double-sided fan. The device removes moisture by exchanging heat, and is arranged around the double-sided fan and has the double-sided fan in the center to partition the drying air path and the cooling air path together with the double-sided fan. a synthetic resin partition plate having an opening for placement, and a first annular groove group integrally molded concentrically on one surface of the drying air path side and the cooling air path side along the periphery of the opening of this partition plate. and a second annular groove group integrally molded concentrically along the outer periphery of the double-sided fan and loosely fitted into the first annular groove group, the second annular groove group being provided. A dryer characterized in that a fan having the same function as the fan on the opposite side is provided on the back side of the second annular groove group.