JPS61232898A - Clothing 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 Industrial Application This invention relates to a dehumidifying type clothes dryer for drying clothes and the like.

2. Description of the Related Art A conventional dehumidifying clothes dryer of this type is disclosed in, for example, Japanese Patent Application Laid-open No. 58
As shown in Japanese Patent No. 67997, it had a structure as shown in FIG.

In Fig. 3, 1 is an outer frame of the dryer, 2 is a drum rotatably installed inside the outer frame 1, 3 is a front door for introducing the material to be dried into the drum 2, and 4 is a heat exchange type blower. A substantially ring-shaped flexible sealing material 6 is fixed to the outer periphery of this heat exchange type blower.

6 is a rotating shaft for rotating the heat exchange type blower 4; 7 is a casing that encloses the heat exchange type blower 4 and forms a ventilation passage; 8 is a partition plate that partitions the air flow on both sides of the heat exchange type blower 4 at the ventilation passage part. , 9 is a duct for guiding hot and humid drying circulation air, and a heater 10 is provided in the middle. 11 is a duct for exhausting the intake cooling air. 12.
13 indicates the flow of drying circulating air and cooling air, respectively. 14 is a discharge port for discharging dehumidified water to the outside of the machine.

With the above configuration, the heat exchange type blower 4 is rotated to perform drying.

Problems to be Solved by the Invention However, with this type of structure, the heat exchange type blower rotates at high speed, so it requires mechanical strength and precision, and there is a limit to reducing the thickness of the fins that perform heat exchange. there were.

In addition, it is necessary to separate the drying circulating air and the cooling air near the air outlet on the outer periphery of the heat exchange type blower, which requires a seal structure for air sealing, which increases cost and separates the drying circulating air from the cooling air. Complete sealing is difficult because there is a pressure difference between the cooling air and the cooling air. Moreover, depending on long-term use, there are problems in terms of reliability due to wear of the seal, etc., and there are also problems such as the need for extra starting torque of the motor.

SUMMARY OF THE INVENTION Therefore, the present invention provides a dehumidifying type clothes dryer with a simple structure that improves heat exchange performance, eliminates the need for a seal structure, and improves reliability.

Means for Solving the Problem In order to solve this problem, the dehumidifier of the present invention has a circulation fan and a cooling fan coaxially arranged, and a heat exchanger that also serves as a partition wall installed between the two fans. It is something that

action The effect of this technical means is as follows.

That is, when the circulation fan and the cooling fan are rotated, each fan generates a circulation air flow and a cooling air flow.

The circulating air for drying is heated by a heating element, heats the clothes in the clothes storage, passes through a circulation fan, passes between the fins of a heat exchanger that also serves as a partition wall, and returns to the heating element via a drying air path. Head in the direction. Cooling air is drawn in from outside the machine, passes through a cooling fan, passes between the fins of a heat exchanger that also serves as a partition wall, and exits the machine again via a cooling air path. and,
Both air flows next to each other with a partition wall in between, and at this time,
Heat is transferred from the high-temperature, high-humidity drying circulating air to the low-temperature cooling air through a heat exchanger that also serves as a partition wall, and the circulating air is cooled, and the moisture contained in it condenses and forms water droplets. Water is drained and the circulating air for drying is dehumidified.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In Figure 2, 15 is the outer frame of the dryer, 16 is the outer frame 1
17 is a front door for putting the items to be dried into the clothes storage 1θ, 18 is a circulation fan that blows dry air, and 19 is a cooling fan that blows cooled air. Both fans 18 and 19 are provided on the same axis, and a heat exchanger 2o that also serves as a partition wall is provided in the middle to partition the two fans. The heat exchanger 20, which also serves as a partition wall, is composed of a thin plate made of metal, resin, etc., and fins 202L and 20b are provided radially on both sides thereof. Reference numeral 21 denotes a rotating shaft on which two fans 18 and 19 are coaxially mounted and rotated, and is driven by a motor (not shown). 22 is two fans 18. This is a casing that encloses the heat exchanger 2o and the heat exchanger 2o to form a ventilation passage, the details of which are shown in FIG.

Reference numeral 23 denotes a circulating air cylinder for guiding hot and humid drying circulating air, which houses a heating element 24 in the middle, and forms a drying air path together with the clothing storage 16. Reference numeral 26 denotes a wind barrel for discharging the intake cooling air, and constitutes a cooling air path for cooling the circulating air in the dry air path.

26 and 27 indicate the flows of drying circulating air and cooling air, respectively. 28 is a discharge port for discharging dehumidified water to the outside of the machine.

FIG. 1 shows details of 20 parts of the heat exchanger.

That is, a heat exchanger 2o that also serves as a partition wall is provided to partition the middle portion of both the circulation fan 18 and the cooling fan 19, and the heat exchanger 2o is provided with heat exchangers 2o on both sides near the outer periphery of the fans 18 and 19 of the heat exchanger 2o. Fi7202L.

20b are provided radially and form air guides. And both the fans 18 and 19 and the heat exchanger 2o
A casing 22 is provided enclosing the casing 22 to form a ventilation path.

Next, the operation of the configuration of this embodiment will be explained.

In the above configuration, when the power is turned on and the motor (not shown) is rotated, the rotational force is used to connect the circulation fan 18 and the cooling fan 1.
9 and clothes drying cabinet 16, a circulating air flow 26 and a cooling air flow 27 are generated by the respective fans 18,19. The circulating air for drying is heated by the heating element 24 and then heats the clothes in the clothes drying cabinet 16. Thereafter, the air passes through the circulation fan 18, passes between the fins 20& of the heat exchanger 2o which also serves as a partition wall, and heads toward the heating body 24 again via the circulation air cylinder 23. Cooling air is sucked in from outside the machine, passes through the cooling fan 19, passes between the fins 20b of the heat exchanger 20 which also serves as a partition wall, and exits the machine again via the wind IP+25. Both airs are connected to heat exchanger 2, which also serves as a partition wall made of a single thin plate.
At this time, heat is transferred from the high-temperature, high-humidity drying circulating air to the lower-temperature cooling air via the heat exchanger 2o, which also serves as a partition wall, and the circulating air It is cooled, and the water contained therein condenses into water droplets and is drained from the drain port 28. Therefore, the drying circulating air is dehumidified and the clothes in the clothes dryer 16 are dried.

Effects of the Invention In the present invention, the intermediate portion of both the circulation fan and the cooling fan is partitioned by a heat exchanger that also serves as a partition wall, and this heat exchanger has fins radially attached to both sides near the outer periphery of the fan. Therefore, the heat exchange performance can be greatly improved, and the following effects are also achieved.

That is, since the blowing function section and the heat exchange function section are provided separately, the fan can be rotated at high speed, and the thickness of the heat exchanger can be made extremely thin. Furthermore, since the middle part of both fans is partitioned, the opening area of the rotating shaft penetrating part can be reduced, and the conventional seal structure that separates drying circulating air and cooling air is no longer required, simplifying the configuration. At the same time, reliability is improved, and the driving torque of the motor can be reduced, so costs can be reduced. Clothes dryers in particular have a pressure difference between the circulating air for drying and the cooling air, so air leaks are likely to occur due to this pressure difference, and the outer periphery from which the air is blown must be sealed. However, eliminating the seal section can improve the performance of the clothes dryer. In addition, the fins near the outer periphery of the fan are radial and also serve as air guides, resulting in smoother air flow, less heat exchange loss, and a more compact configuration.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an enlarged main part of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a vertical sectional view of the same clothes dryer, and FIG. 3 is a conventional clothes dryer. FIG. 15...Dryer outer frame, 16...Clothing storage, 18...Circulation fan, 19...Cooling fan, 2°... Partition wall, 20 & , 20b
······fin. Name of agent: Patent attorney Toshio Nakao and 1 other person
2 Figure
f! ;-fif: Me (Tato Shuttle 6-)-゛Ulni, 1B=t! ix farm 1n 26 people ti'r%--huin

Claims (1)

[Claims] A drying air path including a clothing storage and a circulating air cylinder containing a heating element, a cooling air path for cooling the circulating air in this drying air path, and a circulation provided on the same axis for blowing dry air. A clothes dryer comprising a fan, a cooling fan that blows cooling air, and a heat exchanger that also serves as a partition wall that partitions an intermediate portion between the two fans and has fins radially provided on both sides near the outer periphery of the fan.