JPS6364239B2 - - Google Patents

Description

Detailed Description of the Invention The present invention guides hot air from a heat generating source into a rotating drum, and sends the high-temperature and humid air generated in the rotating drum into a heat exchanger to dehumidify it and dry the material to be dried. The present invention relates to a dehumidifying clothes dryer, and specifically relates to an improvement in a cooling path through which cooling air for cooling the heat exchanger passes.

This type of conventional dehumidifying clothes dryer is equipped with a circulating air path that sends high-temperature and humid air generated in a rotating drum to a heat exchanger and circulates it through a heated air cylinder that has a heating element inside. However, the airtightness of the sliding parts and connecting parts of the functional parts that make up the circulating air path is currently not perfect due to deterioration of seals and dimensional variations in the functional parts. In order to achieve perfect airtightness, it is necessary to significantly improve the structure of sliding parts and connecting parts, use special materials, and eliminate variations in functional parts, which would make the product extremely expensive. , and is accompanied by many difficulties. On the other hand, even if there is a small gap, the product's function is fully fulfilled, and as mentioned above, the airtightness is not perfect at present. A complete wall here means 100% airtight.

Therefore, under such a circulating air path, during operation, a small amount of circulating air leaks into the interior space of the aircraft, resulting in hot and humid air condensing on the interior walls of the aircraft, deterioration of the insulation of electrical components, and the temperature of the aircraft. This had negative effects such as increasing the

The present invention solves the above-mentioned conventional problems by connecting the air intake opening of the cooling blower provided in the main body to cool the heat exchanger and the outside air intake port provided in the main body to reduce the space inside the main body. By communicating through the heat exchanger and discharging the air blown to the heat exchanger to the outside of the main unit, the small amount of hot and humid air leaking into the main unit is immediately exhausted to the outside of the machine, preventing dew condensation inside the main unit. This is intended to prevent the temperature of the aircraft from rising.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is the main body of the dryer, 2 is a rotating drum that is rotatably supported within the main body 1, and 3 is a heater that is a heating element provided in the middle of the circulating air path.
Reference numeral 4 denotes a circulation fan that guides the hot air heated by the heater 3 into the rotating drum 2. As the circulation fan 4 rotates, the high-temperature and humid air that has passed through the rotating drum 2 passes through the blower duct 5. Furthermore, it is sent into the dew condensation pipe 6 of the heat exchanger 8 which is composed of the dew condensation pipe 6 and plate fins 7 . The air that has passed through the condensation pipe 6 passes through the drainage duct 9, is reheated by the heater 3, and is sucked into the rotating drum 2 again.

As mentioned above, the circulation air path for dry air is
It is mainly formed by the inside of the rotating drum 2, the air duct 5, the condensation pipe 6 of the heat exchanger 8, and the drainage duct 9, and by keeping these members airtight with a sealing member or the like, The dry air flows in the direction of arrow a without leaking to the outside.

Reference numeral 10 denotes a drive motor that rotationally drives the rotating drum 2 and circulation fan 4 via belts 11 and 12. A cooling fan 1 is disposed on the coaxial core of the drive motor 10, that is, at the end of the rotating shaft 10a.
There are 3. The cooling fan 13 and the fan casing 14 constitute a cooling device. The cooling fan 13 is composed of a centrifugal fan or the like, and the air suction opening 14a provided in the fan casing 14 is open into the main body 1, and the fan casing 14 allows air to be blown by the rotation of the cooling fan 13. It is guided to the plate fins 7 of the heat exchanger 8. Reference numeral 15 denotes a cover that surrounds the heat exchanger 8, one end of which communicates with the air discharge side of the fan casing 14, and the other end of the cover 15 connected through an exhaust port 16 formed on the bottom surface of the main body 1. It communicates with the outside of the aircraft.

Reference numeral 17 denotes an outside air intake port 17 formed in the main body 1, to which a removable intake filter 18 is attached. The air intake opening 14a and the outside air intake port 17 communicate with each other through the interior space of the main body 1, thereby forming an intake path. That is, the rotation of the cooling fan 13 reduces the pressure of the air inside the main body 1, and the outside air is taken in from the outside air intake port 17. Arrow a indicates the flow of drying air, and arrow b indicates the flow of cooling air. Moreover, 19 is a drainage port provided at the bottom of the drainage duct 9.

In the above configuration, by rotating the drive motor 10 and energizing the heater 3, dry air heated by the heater 3 enters the rotating drum 2 as shown by arrow a due to the rotation of the circulation fan 4. The hot and humid air generated here passes through the dew condensation pipe 6 of the heat exchanger 8.

On the other hand, due to the rotation of the cooling fan 13, the fan casing 1, which covers the outside air intake port 17 of the main body 1 and the cooling fan 13, is moved as shown by arrow b.
The outside air guided into the cover 15 through the air intake opening 14a of the heat exchanger 8 and the fan casing 14 passes between the plate fins 7 of the heat exchanger 8. As a result, the heat exchanger 8 is entirely cooled,
The hot and humid air inside the dew condensation pipe 6 is cooled, and water droplets form on the inner wall of the dew condensation pipe 6. These water droplets are pushed out from inside the condensation pipe 6 by wind pressure and gravity in the direction in which the circulating air passes, and are discharged to the outside of the machine through a drain port 19 provided in the drain duct 9. The cooling air subjected to heat exchange is passed through the cover 1.
Exhaust port 1 provided on the bottom surface of main body 1 while exiting from 5
6 and is discharged outside the machine.

As described above, the air intake path of the cooling fan 13 includes the air intake opening 14a and the outside air intake port 17.
Since it is configured by communicating with each other through the space inside the main body 1,
As the cooling fan 13 rotates, the air inside the main body 1 is reduced in pressure, and outside air is taken in through the outside air intake port 17. At this time, from the air intake opening 14a,
A small amount of dry air, that is, high-temperature and humid air leaking into the main body 1 from a small gap in the circulating air path is also taken in and discharged to the outside of the machine.

In addition, the outside air intake port 17 and the air intake opening 14a
The outside air intake port 17 can be formed at any position on the wall surface of the main body 1 as long as it is on a wall different from the exhaust port 16, and the outside air intake port 17 can be formed at any position on the wall surface of the main body 1. By preventing the air exhausted from the intake port 17 from being sucked in again, cooling efficiency can be improved, and the occurrence of dew condensation can also be effectively prevented. Furthermore, the air intake opening 14a may be placed at any position within the main body 1, thus providing flexibility in design.
For example, it becomes possible to design a product that is advantageous in making it more compact.

As described above, according to the present invention, in particular, in the cooling structure of a heat exchanger for dehumidification, the air intake opening of the cooling blower and the outside air intake port provided in the main body are connected through the space inside the main body. By operating the above-mentioned air blower, the air inside the main unit is depressurized and an intake path is created to take in outside air from the outside air intake port, thereby quickly removing the small amount of dry air (hot and humid air) that leaks into the main unit. It can be discharged to the outside, preventing dew condensation on the internal walls of the main body and reducing the temperature rise of the aircraft.
Moreover, members such as a connecting duct between the air intake opening of the cooling blower and the outside air intake port are not required, thereby simplifying the structure and streamlining the assembly. Furthermore, the outside air intake port, which is the intake port for cooling air, can be provided at any location on the wall of the main body that is different from the exhaust port, and the air intake opening can be located at any location within the main body. It is also possible to provide a large amount of benefits, such as streamlining the design.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view mainly showing the cooling air path portion thereof, and FIG. 3 is a back sectional view thereof. 1...Main body of the dryer, 2...Rotating drum, 3...
...Heater (heating element), 4...Circulation fan, 8...
Heat exchanger, 13... Cooling fan, 14a...
...Air intake opening, 16...Exhaust port, 17...Outside air intake port.

Claims (1)

[Claims] 1. A rotating drum rotatably disposed within the main body, a circulating air path communicating between the inside and outside of the rotating drum via a heat exchanger and a heating air cylinder with a heating element inside, and cooling the heat exchanger. The air intake opening of the cooling air blower and the outside air intake port provided on the wall side of the main body are connected through a space inside the main body to The operation of the air blower reduces the pressure of the air inside the main body and forms an intake path for sucking outside air from the outside air intake port, and the air blown to the heat exchanger is discharged to a side of a wall different from the outside air intake port. A dehumidifying clothes dryer configured to