JPS6127590Y2 - - Google Patents

Description

[Detailed description of the invention] This invention condenses the moisture contained in the hot air passing through the rotating drum into water in a cooled heat exchanger.
This relates to a dehumidifying clothes dryer that discharges this water outside the machine and reheats the air from which the moisture has been removed to provide a drying effect.It efficiently processes the condensed water and improves drying performance. , which aims to stabilize electrical insulation performance.

There are generally two types of clothes dryers: the floor-standing type, which is placed directly on the floor, and the laundry type, which is installed on a unit stand to utilize the space above the washing machine. If this changes, a floor-standing type may be installed on a unit stand, or conversely, a laundry type may be used as a floor-standing type.

Generally, when designing for laundry type use, the rotating drum inlet is placed near the bottom of the main body.
The time switch is also mounted at the bottom of the front of the main unit, making it easy to use even for short people. However, if you install this type of thing directly on the floor,
The input slot and time switch are located close to the floor, and when operating them, it is necessary to bend your back or put your knees on the floor, making it difficult to handle. It was hot.

On the other hand, in the floor type, the input slot and time switch are installed in the upper part of the main unit, making it easier to operate the unit, but when this is placed on the unit stand, the input slot and time switch are It is located high, making it difficult for short people to operate it.

Therefore, a clothes dryer has been proposed in which drying air is passed through a rotating drum and then discharged outside the machine, and can be used with the main body either upright or upside down. In other words, when the unit is placed upright on the floor, the input slot and time switch are located at the top of the unit, making it easy to operate; when placed upside down on the unit stand, the input slot and time switch are easily accessible. are located in the lower part of the main body, so even short people can easily perform these operations.

I understand that a dryer that can be used in an upright or inverted position is excellent in practical terms, but some clothes dryers simply can be used in an upright or inverted position. Some configurations do not provide the desired drying effect. That is, it has a heat exchanger for dehumidification in the middle of the hot air circulation path.

This type of clothes dryer cools the air containing moisture discharged from the rotating drum by passing it through a heat exchanger, and then condenses the moisture and discharges it as water. If this water is not drained out of the machine immediately after leaving the heat exchanger, there is a high risk of re-evaporation, and when this re-evaporation occurs, the humidity in the hot air increases and the clothes in the rotating drum become evaporated. It will take time to dry.

Therefore, a drain port is provided near the outlet side of the heat exchanger for discharging the water coming out of the heat exchanger to the outside of the machine. However, in the case of this type of dehumidifying type, there has not been one that was designed to be used in an inverted position, and the drain port is simply for discharging water when used in an upright position. In this case, water cannot be guided to the drain.

The present invention is a dehumidifying clothes dryer in which the heat exchanger is placed in the upper part of the main body, and the water generated in the heat exchanger can be reliably discharged to the outside of the machine. Examples will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a main body, in which a rotary drum 2 having a horizontally long central rotation axis is rotatably arranged. 3 is a circulation fan; 4 is a fan case housing the circulation fan 3;
It is connected to the rear side of the. Reference numeral 5 denotes a motor provided inside the upper surface of the main body 1, which rotates the circulation fan 3 via a fan belt 6a and rotates the rotary drum 2 via a drum belt 6b.

One end opening side of a blower body 7 is connected to the fan case 4 , and this blower body 7 is connected to the fan case 4 .
It communicates with the inside of the rotating drum 2 via. Reference numeral 8 denotes a heat exchanger having a pipe 8a installed in the upper part of the main body 1 so that hot air flows in a substantially horizontal direction, and has a heat radiation fan 8b, as shown in FIG. It is located inside the upper surface of the main body 1. The inlet side of the heat exchanger 8 is airtightly connected to the other open end of the blower cylinder 7.

Reference numeral 9 denotes an exhaust duct whose one open end is airtightly connected to the outlet side of the heat exchanger 8, and the other open end is equipped with a nichrome wire heater, a heater having positive resistance-temperature characteristics, etc. One end opening side of the heating air cylinder 10 equipped with the heating element 11 is connected in an airtight manner, and the other end opening side of the heating air cylinder 10 is connected to the front wall part 12 of the rotating drum 2 through a hot air intake formed therein. It is connected airtightly so as to communicate with the hole 13.

The above-mentioned rotating drum 2, fan case 4, blast cylinder 7, heat exchanger 8, exhaust duct 9, and heating cylinder 10 constitute a circulation path through which air is circulated by rotation of the circulation fan 3.

A cooling fan 14 rotates when the rotational force of the motor 5 is transmitted, and as a result of this rotation, cooling air is sucked in from an intake port 15 provided on the front surface of the main body 1. Reference numeral 16 denotes a cooling fan case that guides the intake air to cool the heat exchanger 8 from the outside, and its discharge port 17 is open at the bottom surface of the main body 1. A filter 18 is detachably attached to the intake port 15 to capture dust in the intake air. The cooling fan 14 described above is constituted by a Sirotskov fan that takes in air from its axis and discharges it in the direction of centrifugal force.

Reference numerals 19 and 20 indicate water stop weirs located near the inlet and outlet sides of the heat exchanger 8 and protruding from the inner bottom surfaces of the blower body 7 and the exhaust duct 9 to prevent the flow of the circulating air. It protrudes perpendicular to the direction. Reference numeral 21 denotes a drainage port formed on the lower surface of the exhaust duct 9 between the discharge side of the heat exchanger 8 and the weir 20, and is connected to a joint 23 provided at the bottom of the main body 1 via a drainage hose 22. is further connected to a desired drainage point outside the machine via a drainage hose 24.

The height of the weir 19 described above is set lower than the weir 20 by the dimension h.

In the figure, arrow a indicates the flow of circulating air passing through the heat exchanger 8, and arrow b indicates the flow of cooling air for cooling the heat exchanger 8.

The operation in the above configuration will be explained. By rotating the motor 5 and energizing the heating element 11, the rotation of the circulation fan 3 causes the heating element 11 to be heated.
The heated air enters the rotating drum 2 as shown by arrow a, and the high temperature and humid air generated here passes through the pipe 8a of the heat exchanger 8.

On the other hand, as the cooling fan 14 rotates, outside air passes between the heat radiation fans 8b of the heat exchanger 8 via the intake port 15 on the front surface of the main body 1 and the cooling fan case 16, as shown by arrow b. As a result, the heat exchanger 8 is entirely cooled, and water droplets form on the inner wall of the pipe 8a. These water droplets are pushed out from inside the pipe 8a by wind pressure and gravity in the direction in which the circulating air passes, and are discharged from the drain port 21 provided in the exhaust duct 9 to the outside of the aircraft via the drain hoses 22 and 24.

Here, a weir 19 for stopping water is provided on the bottom surface of the blast barrel 7 at the inlet portion where the circulating air flows into the heat exchanger 8 and is perpendicular to the hot air flow direction, and furthermore, the circulating air flows out from the heat exchanger 8. At the bottom of the exhaust duct 9 at the outlet part, a weir 20 for stopping water is provided, which is perpendicular to the hot air flow direction, and the height of the weir 19 is set lower than that of the weir 20, resulting in the following effects. play.

During normal operation, water droplets generated in the heat exchanger 8 are
It is blocked by a dam 20 provided on the bottom of the exhaust duct 9, and is efficiently discharged from the drain port 21. In addition, a weir 19 provided in the blower body 7 prevents some water droplets from flowing back into the circulation fan 3 when the operation is stopped midway. Therefore, during normal operation, it is possible to prevent the heating element 11 from being flooded with water, and also to prevent the circulation fan 3 from being flooded with water, thereby preventing problems with insulation, deterioration of functional parts, etc.

In addition, if the drain hose 24 for draining water outside the machine is accidentally stepped on or bent, or even if foreign matter gets into the drain hoses 22 and 24, condensed water may leak into the exhaust duct 9 during operation. Of course, it accumulates in the pipe 8a of the heat exchanger 8, etc., but the weir 2
Since the height of the weir 19 is lower than that of the weir 19, dew condensation water actively overflows from the weir 19 and flows into the circulation fan 3. Thereby, it is possible to prevent the heating element 11 from being flooded with water in the above-mentioned abnormal state, and it is possible to prevent the insulation performance from deteriorating. And circulation fan 3
The water injected into the casing accumulates in the casing that covers the circulation fan, and as the circulation fan rotates, a water cutting sound is generated and an abnormal condition can be detected.

As described above, according to the present invention, even if the water droplets generated by the heat exchange action are insufficiently discharged, there is no fear that the water will flood the heating element, and safety in terms of electrical insulation can be ensured. Furthermore, since water can be efficiently discharged under normal conditions, re-evaporation of water is less likely to occur, and drying performance can be improved.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view mainly showing the cooling air path portion thereof, and FIG. 3 is a back cross-sectional view thereof. 1...Main body of the dryer, 2...Rotating drum, 3...
... Circulation fan, 4 ... Fan case, 5 ... Motor, 7 ... Blow air cylinder, 8 ... Heat exchanger, 9 ... Exhaust duct, 10 ... Heating air cylinder, 11 ... Heating element,
14...Cooling fan, 19,20...cough.

Claims (1)

[Scope of utility model registration request] A rotating drum rotatably arranged inside the main body, a fan case connected to the rear side of the rotating drum and containing a circulation fan, and an upper part of the main body so that the direction of flow of hot air is located almost horizontally. a heat exchanger arranged therein, a blowing air barrel that communicates the fan case and the hot air inlet side of the heat exchanger, and an outlet side of the hot air of the heat exchanger and a front side of the rotary drum on the outlet side. The air blower body and the exhaust duct are connected to each other through an exhaust duct arranged in the air, and are equipped with a heating air cylinder having a heating element inside, and a cooling fan device for cooling the heat exchanger. A dehumidifying clothes dryer, in which a weir for stopping water is provided on each lower surface, and the height of the weir provided on the blower body is set lower than that of the weir provided on the exhaust duct.