JPH0240954Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a so-called dehumidifying type dryer.

[Technical background of the invention]

Conventionally, this type of dryer has been designed to dry the material to be dried by performing a circulation operation in which the air inside the drying chamber is dehumidified through a heat exchanger and then returned to the drying chamber. Some devices are designed to prevent the outside of the machine from becoming humid by dehumidifying the air, even if the air is discharged outside the machine without being returned to the drying chamber. In these dehumidifying types, the water generated by dehumidification is discharged outside the machine from a cylindrical drain port through a drain hose connected to the drain port. This prevents water from accumulating inside the aircraft.

[Problems with background technology]

However, the above-mentioned drain hose is often left hanging on the outer box of the dryer or other objects and is left in a so-called forget-to-set state, and even if it is set, it may be bent in the middle or for some reason. In these cases, water is not drained smoothly and tends to accumulate, and eventually overflows into the outer box and accumulates inside the outer box, or There was a risk that touching electrical parts such as heaters could reduce their insulation and cause electric shock accidents.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to prevent water from accumulating inside the outer box or outside the case even if there is an abnormality such as forgetting to set the drain hose, bending it, or clogging it. To provide an extremely practical dryer that does not touch electrical parts inside the box.

[Summary of the idea]

The present invention forms a concave part in the cylindrical drain port, which extends from the tip edge toward the base beyond the length of the part to which the drain hose is connected, and opens radially outward and axially forward. If there is an abnormality in the drain hose, such as forgetting to set it, bending, or clogging, the water can be drained from the recess along the drain hose.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. First, in Figure 1, 1 is the outer box,
It has a drying material inlet/outlet 2 approximately in the center of the front surface, and a door 3 for opening and closing the drying material inlet/outlet 2 is pivotally provided in front of the drying material inlet/outlet 2. 4 is a drum disposed inside the outer box 1, the inside of which serves as a drying chamber 5;
The front portion thereof is supported by a drum support 6 via a bearing packing 7, and at the same time communicates with the dried material inlet/outlet 2 via the drum support 6. On the other hand, reference numeral 8 denotes a shaft protruding further rearward from the center of the rear surface of the drum 4, and a front and rear wing fan 9, which also serves as a heat exchanger, is rotatably attached to this shaft. Reference numeral 10 denotes a casing surrounding the above-mentioned double wing fan 9, and the inside of this casing is connected to the drum 4 by a partition ring 11.
The front part 9 of the double-winged fan 9 communicates with the inside and the drying chamber 5.
It is divided into a front chamber 10a where a is located, and a rear chamber 10b which communicates with the outside of the outer box 1 and where the rear portions 9b of the double wing fans 9 are located. 12 is a support plate, on which bearing 1 is attached.
3 is attached to the shaft 8 through the bearing 13.
Therefore, the rear part of the drum 4 and the double wing fan 9 are supported. 14 is a back plate. Also, 15 is drum 4
16 is a belt hung around the pulley part 9c of both wing fans 9, and these belts 1
A motor (not shown) rotates the drum 4 and the double-wing fan 9 via the motors 5 and 16. Reference numeral 17 denotes a connecting duct whose one end communicates with the front chamber 10a of the casing 10, especially the lower part thereof,
The other end communicates with the drying chamber 5 (inside the drum 4) with a heater duct 18 facing from the front, and a heater 19 such as a semiconductor heater is disposed within the heater duct 18. and 20
As shown in FIG. 2, numeral 21 denotes a cylindrical drainage port which protrudes further downward from the central lower part of the heater duct 18, and 21 is a drainage hose connected to the drainage port 20 using a stopper 22. Here, the above drain port 2
0, as shown in FIGS. 3 and 4, a connection hose 21 is inserted from its tip edge (lower edge) toward the base.
The concave portion 23 extends beyond the length L of the portion to which the connecting hose 21 is connected and is open radially outward and axially forward (downward). is forming.

Now, in the case of the device configured as described above, when the operation is started, the heater 19 generates heat and at the same time the motor (not shown) is activated, thereby rotating the drum 4 and both wing fans 9. Of these, both wing fans 9, the air in the drying chamber 5 is transferred to the front chamber 10a of the casing 10 in the front section 9a.
On the other hand, at the rear part 9b, air outside the outer box 1, that is, outside the machine, is sucked into the rear chamber 10b of the casing 10. Therefore, within the casing 10, heat is exchanged between the air inside the drying chamber 5 and the air outside the machine via the double-wing fans 9, whereby the air inside the drying chamber 5 is condensed with the air outside the machine and dehumidified. The dehumidified air then passes through the connection duct 17 into the heater duct 18, is heated by the heater 19 in the heater duct 18, and is then returned to the drying chamber 5 where it comes into contact with the material to be dried (not shown) and is heated. Stir up the humidity,
Furthermore, the process of being sucked out and dehumidified by the front part 9a of the double-winged fan 9 is repeated, thus drying the material to be dried.

On the other hand, due to the above-mentioned dehumidification, both wing fans 9
Condensation occurs on the surface of the front part 9a of the casing 10, and the water falls one after another and flows from the front chamber 10a of the casing 10 into the connecting duct 17, and then from the drain port 20 to the drain hose 2.
1 and if there is no abnormality in the drain hose 21, it will be discharged to the outside of the machine through the drain hose 21. On the other hand, when the drain hose 21 is forgotten to be set, bent, or clogged, the water that has entered the drain hose 21 tends to accumulate and eventually reaches the drain port 20. And after that
It enters into the recess 23 through the axially forward (lower) open port 23a of the recess 23 formed in the drain port 20, passes through this, exits to the outside through the radially outward open port 23b at the upper part, and then drains. It flows along the outer surface of the hose 21 and along the drainage hose 21. Therefore, in the case of this embodiment, water does not accumulate inside the outer box 1, and
Therefore, the water does not come into contact with electrical components such as the heater 19, and thus safety can be sufficiently ensured. Further, by looking at the water flowing along the outer surface of the drain hose 21, the user can know that there is an abnormality in the drainage situation, and can thereby promptly take appropriate measures to deal with the problem.

The present invention is not limited to the embodiments described above and shown in the drawings, but may be modified as appropriate without departing from the gist, such as being widely applicable to general dehumidifying type dryers other than drum type dryers. It can be implemented by

[Effect of idea]

As is clear from the above description, according to the present invention, if the drainage hose for discharging water generated by dehumidification inside the machine outside the machine is forgotten to be set, bent, or clogged, the water is The water can be discharged along the drain hose through a recess formed in the drain port, which prevents the water from accumulating inside the outer box or coming into contact with electrical components inside the outer box, providing sufficient safety. It has excellent practical effects, such as ensuring safety.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
2 is a perspective view of the area around the drain port, FIG. 3 is an enlarged broken perspective view of the main part, and FIG. 4 is an enlarged longitudinal side view of the same part. In the figure, 5 is a drying chamber, 9 is a double fan (heat exchanger), 10 is a casing, 17 is a connecting duct, 1
9 is a heater, 20 is a drain port, 21 is a drain hose,
23 is a recessed portion, 23a is an axially forward opening, 23b
is a radially outward opening.

Claims (1)

[Scope of utility model registration request] A tube that dehumidifies the air inside the drying chamber through a heat exchanger and returns it to the drying chamber or discharges it outside the machine, and discharges the water produced by the dehumidification to the outside of the machine through a drain hose. A concave portion is formed in the drain port, extending from the distal edge toward the base beyond the length of the portion to which the drain hose is connected, and opening outward in the radial direction and forward in the axial direction. dryer.