JPS6014461Y2 - Dryer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dryer that exchanges heat between intake air and exhaust air.

Conventionally, in clothes dryers in which the outside air drawn into the machine is heated by a heater and supplied into the drying chamber, and the exhaust air from the drying chamber is discharged outside the machine, moisture is removed from the clothes in the drying chamber. Since the hot air is exhausted as it is, there is a drawback that there is a large heat loss and the drying efficiency is low.Also, the moisture contained in the exhaust air is directly released into the room, causing mold on the room walls near the exhaust vent. There was also a risk that it would be released.

For this reason, in the past, clothes dryers have been provided that are configured to reduce heat loss by installing a heat exchanger inside the machine to exchange heat between intake air and exhaust air, and at the same time dehumidify the exhaust air. There is.

However, with this configuration, if a large heat exchanger with a large heat exchange area is used, the machine that houses it will become large. If a small device with a small area is used, the heat exchange ability will be low and it will not be possible to expect much improvement in drying efficiency and dehumidification ability.

The present invention was developed in response to the above circumstances, and its purpose is to improve drying efficiency and dehumidification ability by efficiently exchanging heat between the inhaled outside air and the discharged air. To provide a dryer which can perform such heat exchange with a closing plate member for closing the rear opening of the fuselage body, and which exhibits effects such as eliminating the possibility of increasing the size of the fuselage body. .

An embodiment in which the present invention is applied to a rotary drum type dryer will be described below with reference to the drawings.

Reference numeral 1 denotes an outer box where the fuselage is covered, for example, where almost the entire front and rear sides are open respectively, 2 is a front plate that closes the front opening of the outer case 1, and this front plate 2 has a door receiving recess 3 and this A short cylindrical clothing opening 4 is formed extending from the door receiving recess 3 into the outer box 1, and a door 5 for opening and closing the clothing opening 4 is pivotally installed in the door receiving recess 3.

Reference numeral 6 denotes a rotating drum with a drying chamber 7 inside, and this has an inner periphery of a short cylindrical opening 9 formed in its front end plate 8 supported on the outer periphery of the clothes slot 4 to communicate with each other. At the same time, a shaft 11 protruding from the rear end plate 10 is rotatably supported by a support plate 12 installed between the left and right side walls of the outer box 1, and the rear end plate 10 is provided with a large number of ventilation holes 13. is forming.

Reference numeral 14 denotes an air expansion plate fixedly attached to the support plate 12, which is positioned so as to face the rear end plate 10 with a predetermined space 15 in between. 16
has been set up.

Reference numeral 17 denotes a fan casing disposed below the rotating drum 6, whose suction side end is communicated with the inside of the drying chamber 7 via the gap 18 between the door receiving recess 3 and the door 5;
A discharge side end (not shown) is communicated with a front end of a duct 19 disposed in the lower part of the outer box 1 so as to be oriented back and forth.

Reference numeral 20 denotes a double-shaft type motor, with one end of a rotating shaft 20a protruding into the fan casing 17, and a fan 21 attached to the protruding end.
At the same time, a pulley 22 is connected to the other end of the rotating shaft 20a.
is attached.

A belt 23 is installed between the pulley 22 and the outer periphery of the rotating drum 6, and a constant tension is applied to the belt 23 by a tension pulley 24.

Reference numeral 25 denotes a closing plate member attached to the edge of the rear opening of the outer box 1 so as to close it, and this will be described below.

That is, this closing plate member 25 connects the heat exchange plate 26 in the intermediate portion and the outer plates 37 and 28, which are a pair of plate-like members positioned so as to sandwich this from both sides, by roll bonding or the like. An intake passage 29 and an exhaust passage 30 are provided between the heat exchange plate 26 and the outer plates 27 and 28 along the front and back sides of the heat exchange plate 26, respectively.
is formed.

The upper part of the intake passage 2.9 is communicated with the outside of the outer case 1 via an intake port 31 formed on the upper right side of the outer panel 27 in FIG.

On the other hand, the upper right area of the closing plate member 25 in FIG. 2 has a structure in which the outer plate 27 and the heat exchange plate 26 are in close contact with each other, as shown in FIG. An exhaust port 32 is formed, and an exhaust pipe 33 is provided protruding from the outer plate 27 to communicate with the upper part of the exhaust passage 30 via the exhaust port 32.

Further, the lower part of the exhaust passage 30 is communicated with the rear end portion of the duct 19 via a communication port 34 formed in the lower part of the outer plate 28, and the lower part of the intake passage 29 is connected to the heat exchange plate 26 and the outer plate. Communication ports 3 formed at the lower left side in FIG. 2 of 28, respectively.
It communicates with the inside of the outer box 1 via 5 and 36.

Here, as shown in FIG. 4, the heat exchange plate 26 and the outer plate 28
The peripheral portions of the communication holes 35 and 36 are in airtight contact with each other so that the exhaust passage 30 does not directly communicate with the intake passage 29. Therefore, there is no communication port between the intake passage 29 and the exhaust passage 30. No air flows through 35.

On the other hand, 37 is a water drain hole that penetrates the outer plate 27 and the heat exchange plate 26 and communicates with the lower part of the exhaust passage 30, and is closed by a removable cap 38.

Further, 39 is a timer.

Next, the operation of the above configuration will be explained.

After storing the damp clothes in the drying chamber 7 inside the rotating drum 6,
Set and operate the timer 39 to turn on the heater 16 and motor 2.
When energized to 0, the heater 16 generates heat and the rotating drum 6 and fan 21 are rotated, and the rotation of the rotating drum 6 agitates the clothes in the drying chamber 7.

As the fan 21 rotates, the outside air flows through the intake port 31.
After being sucked into the intake passage 29 through the
It spreads throughout the inside of 9 and flows downward to the communication port 35.3.
6 into the outer box 1.

The outside air that has once flowed into the outer box 1 is sent to the air expansion plate 14.
After flowing into the space 15 formed by the above, and being diffused there, it is hot-aired by the heater 16 and supplied to the drying chamber 7.

The hot air that has removed moisture from the clothes in the drying chamber 7 is sucked into the fan casing 17 through the gap 18, and is discharged from there through the duct 19 into the lower part of the exhaust passage 30 through its communication port 34. After that, it rises in the exhaust passage 30 while expanding throughout, and is discharged from the exhaust pipe 33 to the outside of the outer box 1 through the exhaust port 32.

The clothes in the drying chamber 7 are dried by continuing the drying operation with the gas flow indicated by the arrow A.

During the drying operation, the adult outdoor air flowing through the intake passage 29 is at a low temperature approximately equal to room temperature, whereas the exhaust passage 30 which is adjacent to the intake passage 29 and separated by the heat exchange plate 26 is The temperature of the circulating exhaust air is higher than the adult outdoor air, and there is a temperature difference between them.

Therefore, heat exchange is performed via the heat exchange plate 26 between the exhaust air and the exhaust air flowing in different directions along the front and back surfaces of the heat exchange plate 26, so that the adult outside air is heated and the exhaust air is heated. cooled down.

Since the exhaust air flowing through the exhaust passage 3o contains a lot of moisture taken from the clothes in the drying chamber 7 and becomes humid, dew condenses on the heat exchange plate 26 due to the heat exchange described above, and therefore the exhaust air is Moisture in the air is effectively removed, and the latent heat released when the moisture condenses contributes to heating the adult outdoor air flowing through the intake passage 29.

Incidentally, the dew condensation water can be discharged from the drain hole 37 as necessary.

In the above-mentioned embodiment, the closing plate member 25 for closing the rear opening of the outer case 1 constituting the aircraft body is constituted by a heat exchange plate 26 and outer plates 27 and 28 disposed on both sides of the closing plate member 25. , an intake passage 29 and an exhaust passage 30 for heat exchange are formed along the front and back sides of the heat exchange plate 26.
It is characterized in that it functions as a heat exchanger.

That is, the closing plate member 25 has a relatively large area since it plays the role of closing the rear opening of the outer box 1. Therefore, the heat exchange plate 26 can be enlarged and the effective area for heat exchange is reduced. can be increased, thereby increasing the heat exchange ability and improving the drying efficiency and dehumidification ability.

Moreover, since the horizontal width of the closing plate member 25 is relatively large and the horizontal widths of the intake passage 29 and the exhaust passage 30 are also large, in other words, the longitudinal dimensions of each passage 29 and 30 are reduced. Even if the overall thickness and width dimensions are set small, a sufficient ventilation cross-sectional area (cross-sectional area) of the intake passage 29 and the exhaust passage 30 can be ensured.

That is, according to this embodiment, even if the closing plate member 25 is made thinner, the flow resistance of the intake passage 29 and the exhaust passage 30 does not increase to this extent, and therefore, the overall front-rear dimension does not increase that much. The heat exchange capacity can be increased, and in this case, there is no need to dispose a heat exchanger inside the outer box 1 as in the conventional case, so the outer box 1 does not become large.

In the above embodiment, since the exhaust passage 3o is formed on the inside of the outer box 1 of the heat exchange plate 26, there is a risk that the heat released from the exhaust passage 30 may directly escape to the outside of the outer box 1. This also improves the heat exchange capacity.

Also, a heat exchange plate 26 configuring the closing plate member 25 . Outer panel 2
7.28 is unitized, so there is no need to worry about the assembly work being troublesome, and the closing plate member 25 having such a configuration can also be applied to the conventional model by simply replacing the closing plate of the conventional model. be able to.

According to the present invention, as explained above, by using the closing plate member for closing the rear opening of the machine body, it is possible to efficiently exchange heat between adult outside air and exhaust air, thereby realizing improvement in drying efficiency and dehumidification capacity, and It is possible to provide a dryer that has practical effects such as not causing physical fatigue.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a rotary drum type clothes dryer, in which Fig. 1 is a longitudinal side view, Fig. 2 is a partially cutaway rear view, and Figs. 3 and 4 are cross-sectional views. FIG. 6 is a perspective view of a different section of the closure plate member; In the figure, 1 is an outer box (body), 6 is a rotating drum, 7 is a drying chamber, 25 is a closing plate member, 26 is a heat exchange plate, 27, 28...
. . . Outer plate (plate-like member), 29 is an intake passage, 30 is an exhaust passage, and 37 is a drain hole.

Claims (1)

[Scope of utility model registration request] In a dryer in which a drying chamber is provided in a body with an opening on almost the entire back surface, and the sucked outside air is heated and circulated inside the drying chamber before being discharged to the outside, a A pair of closing plate members attached to close the heat exchange plate are arranged on both sides of the heat exchange plate so as to form an intake passage and an exhaust passage along the outside and inside of the body, respectively. A dryer characterized in that it is formed of a plate-like member.