JPH116684A - Drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drier capable of effecting drying treatment in a short time without applying high temperature to an object and drying the object without causing warps, chips, other deformations and damages on the object. SOLUTION: This drier comprises a vertically postured drying chamber 1 having a supply duct 2 connected to an upper part and an exhaust duct 3 connected to a bottom part, a blower 4 for supplying air into the drying chamber 1 via the supply duct 2, a heating means 5 provided midway in the supply duct 2, an exhaust pipe 6 connected to the exhaust duct 3, a water drain 30 provided in a bottom part of the exhaust duct 3, a distributing plate composed of a perforated plate or a network body installed in the bottom of the drying chamber 1 and a door 11 installed at a side part of the drying chamber 1. In this case, in the midway of the exhaust pipe 6 a circulation cylinder 60 in communication with the blower 4 side can be installed for communication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a drying apparatus, and more specifically, to a method for drying objects to be processed having different sizes and types, such as plated products after washing. It relates to a suitable drying device.

[0002]

2. Description of the Related Art For example, for drying a plated product after washing,
Oven dryers and centrifugal drying systems are used. The oven dryer puts a product contained in a predetermined container into an oven, and evaporates moisture or the like adhering to the product by heating to dry the product. The centrifugal drying device puts the product contained in the basket into a basket of a centrifuge, rotates the basket while applying warm air, and dry by centrifugation. The rotation of the car gradually shifts from low-speed rotation to high-speed rotation, and after a predetermined processing time elapses, gradually shifts from high-speed rotation to low-speed rotation and stops.

[0003]

As described above, an oven dryer takes a long time because it evaporates water and the like adhering to a product by heating to dry the product. If the temperature in the oven is increased (for example, 150 ° C.) to shorten the drying process time, the surface of the product becomes stained and the appearance becomes poor, or when the product is an IC component or other electronic component, Or its electrical characteristics change.
Therefore, in order to dry the product in a relatively short time without raising the temperature in the oven too much, the washed product should be manufactured with industrial alcohol (Freon was also used, but its use has been regulated recently) After being immersed in the product, it is placed in an oven to promote the evaporation of the moisture adhering to the product. There was a problem of becoming high.

[0004] The drying apparatus of the centrifugal separation type has the following problems. First, a small object (an object having a small surface area) is difficult to dry and takes a long time to dry. Secondly, if you put small granular objects in a basket and centrifuge, the objects will stick together and become clumpy,
After drying, this must be loosened with a shaker or the like, and shape defects such as chipping are likely to occur when loosened. Third, those having a length of several centimeters or more tend to bend or otherwise deform during centrifugation.

An object of the present invention is to provide a drying apparatus capable of performing a drying process in a shorter time without applying a high temperature to an object. Another object of the present invention is to provide a drying apparatus that can perform a drying process without bending, chipping, or other deformation or damage to an object. Still another object of the present invention is to provide a drying apparatus capable of performing a drying process at lower cost.

[0006]

The drying apparatus according to the present invention is configured as follows to solve the above-mentioned problems. That is, the drying device according to the first aspect of the present invention provides a drying chamber 1 in a vertical position in which an air duct 2 is connected to an upper part and an exhaust duct 3 is connected to a lower part, and air to the drying chamber 1 through the air duct 2. Blower 4, heating means 5 installed in the middle of the air duct 2,
An exhaust pipe 6 connected to the exhaust duct 3, a drainage drain 30 provided at a lower portion of the exhaust duct 3, a rectifying plate 10 formed of a perforated plate or a mesh body installed at the bottom of the drying chamber, , And a door 11 installed on the side of the vehicle.

According to a second aspect of the present invention, in the drying apparatus according to the first aspect, the door of the drying chamber, the suction portion of the blower, and the end of the exhaust pipe are located outside. The entirety is stored in the storage room 7 in a state of facing or exposed.

According to a third aspect of the present invention, in the drying apparatus according to the second aspect, the exhaust duct 3 is connected to the drying chamber 1 through a pipe-shaped connecting portion 31. Is characterized in that the cross-sectional area perpendicular to the ventilation direction is larger than the cross-sectional area perpendicular to the ventilation direction in the connection portion 31. A drying apparatus according to a fourth aspect is characterized in that, in the drying apparatus according to the second or third aspect, a filter 41 is provided in the suction section 40 of the blower 4.

[0009] The drying apparatus according to claim 5 is the drying apparatus according to claim 2.
4. The drying device according to claim 4, wherein
Is characterized in that a circulation cylinder 60 connected to the intake section 40 of the blower 4 is communicated in the middle of.

A drying apparatus according to a fifth aspect of the present invention is characterized in that, in the drying apparatus according to the fifth aspect, the circulation cylinder 60 is supplied with air that has passed through a moisture absorption filter 61. I have.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a drying apparatus according to the present invention will be described below with reference to the drawings. FIG.
FIG. 2 is a cross-sectional view of an embodiment in which a drying apparatus according to the present invention is applied to a dryer for a plated product after washing, FIG. 2 is a partial cross-sectional view along the arrow AA in FIG. 1, and FIG. FIG. 4 is an enlarged sectional view of a connection portion between the exhaust pipe and the circulation pipe,
FIG. 5 is an enlarged plan view showing a modified example of the exhaust duct.

In this embodiment, reference numeral 7 denotes a storage room including a frame 70, a cover 71 made of metal or synthetic resin, and legs 72, and a main part of the drying device is stored in the storage room 7. 1 is a drying chamber installed almost vertically, 2 is a ventilation duct connected to the upper part of the drying chamber 1, 3 is a drying chamber 1
The exhaust duct 4 connected to the bottom of the blower 4 is a blower that blows air to the drying chamber 1 via the blower duct 2, 5 is a heating means including a heater installed in the middle of the blower duct 2, and 6 is connected to the exhaust duct 3. Exhaust stack. Reference numeral 42 denotes a motor of the blower 4, and reference numeral 40 denotes a suction unit of the blower 4, and a filter 41 is installed in the suction unit 40.

A door 11 having lock means (not shown) is attached to the front of the drying chamber 1, and the door 11 is exposed from the storage room 7. As shown enlarged in FIG.
The drying room 1 includes a bottom frame 12 and a peripheral wall plate 1 excluding the door 11.
3 and a ceiling plate 14, and the bottom frame 12, the peripheral wall plate 13 and the ceiling plate 14 are made of heat-resistant resin.
The connection part 31 of the exhaust duct 3 is attached to the ceiling plate 14, and the connection part 20 of the air duct 2 is attached to the ceiling plate 14. The connecting sections 20 and 31 of the ducts 2 and 3 are designed to have substantially the same horizontal cross-sectional area. Drying room 1
The upper part of the connection part 30 with the exhaust duct 3 and the bottom frame 1
2, a rectifying plate 10 made of a perforated plate (perforated plate) or a net;
10a is detachably attached so as to be orthogonal to the ventilation direction. These current plates 10, 10a
Is installed to slightly increase the static pressure in the drying chamber 1. For example, when the dried material supplied into the drying chamber 1 is small and the resistance of the fluid in the drying chamber 1 is large. Used have a large total hole area, and vice versa.

As shown in FIG. 3, the exhaust duct 3 has a flat L-shape. The upper part of one end of the flat L-shape is connected to the drying chamber 1, and the upper part of the other end is FIG. The drain drain 30 is installed in the lower part of the part connected with the exhaust pipe 6 as shown in FIG. FIG.
The cross-sectional area of the portion b of the exhaust duct 3 orthogonal to the flow direction of the wind shown by the arrow a is formed larger than the cross-sectional area of the portion c of the connecting portion 31 communicating the drying chamber 1 and the exhaust duct 3. In this embodiment, the former is set to be approximately three times the latter. A moisture absorption filter 61 is provided in the middle of the exhaust pipe 6, and a downstream side of the moisture absorption filter 61 is branched into an exhaust end 6 a and a circulation pipe 60. 40. In this embodiment, as shown in FIG.
On the downstream side, a flange 62 at the end of the circulation tube 60 is fixed so as to close the exhaust tube 6.
3 is formed, a part of the air in the exhaust pipe 6
The air is discharged to the upper space through the exhaust end 6 a through the hole 63, and the other part of the air flows in the direction of the blower 4 through the circulation tube 60.

In FIG. 1 and FIG. 3, reference numeral 8 denotes a control panel installed in the front of the storage room 7, and the control of each section is performed through the control panel 8. As shown in FIGS. 1 and 2, a temperature sensor 80 is installed at the connection portion 20 of the air duct 2 of the drying chamber 1, and a heating unit detects a temperature detected by the temperature sensor 80 and a set temperature set in a control system. 5 is controlled.

When the cleaned plating product stored in the basket 1a shown in FIG. 2 is put into the drying chamber 1 and the blower 4 is operated together with the heating means 5, warm air passes through the drying chamber 1. The temperature of the hot air passing through the drying chamber 1 increases until the temperature detected by the temperature sensor 80 reaches a set temperature set in the control system. The static pressure in the drying chamber 1 is slightly higher than the normal state (500 mg / cm ² ), and the hot air uniformly contacts and passes through the plating products (not shown) placed in the basket 1a. There is no scattering in the drying chamber 1. Therefore, the plated product is not deformed or damaged. When the high-humidity air that has passed through the drying chamber 1 enters the exhaust duct 3, the cross-sectional area orthogonal to the ventilation direction of the exhaust duct 3 is larger than the cross-sectional area of the connection portion 31 orthogonal to the ventilation direction. Is weakened and muted, and most of the moisture in the moist air flows along the bottom plate of the duct 3 as shown by the arrow d in FIG. The air in the duct 3 becomes spiral at the end of the exhaust duct 6 on the side of the exhaust cylinder 6 of the plane L-shaped exhaust duct 3 in FIG. 3 (this portion is evacuated), and the moisture flowing along the bottom plate is downward. From the drainage drain 30. The air from which the water has been separated is dehumidified by the moisture absorption filter 61 in the exhaust pipe 6, and a part of the air is taken into the blower 4 via the circulation pipe 60 and recirculated. It is discharged upward from the exhaust end 6a.

According to the drying apparatus of the embodiment, the air is supplied from the upward blower 4 to the upper part of the drying chamber 1 through the blowing duct 2, passes through the drying chamber 1, and is exhausted from the exhaust duct 3 through the exhaust pipe 6. With such a configuration, it can be installed in a narrower space. Drying room 1
The inside has a slightly higher static pressure, and the warm air uniformly contacts and passes through the processing object in the drying chamber 1, so that the processing object may scatter or deform in the drying chamber 1. While being prevented, do not raise the temperature in the drying chamber 1 too much,
It can be dried in a shorter time. Part of the air that has been heated and passed through the drying chamber 1 after being dehumidified is again taken into the blower duct 2 from the blower 4 and supplied to the drying chamber 1, so that the heat energy of the heating means 5 is effectively used. Thus, even if the heat capacity of the heating means 5 is small, it becomes necessary and sufficient heat energy. Therefore, the energy consumption is smaller and the drying process can be performed at lower cost.

In the above embodiment, a part of the air reaching the exhaust pipe 6 from the exhaust duct 3 is
The other part of the air is configured to flow to the exhaust end 6a side. However, a damper or the like is provided in the circulation cylinder 60, and all the air in the exhaust duct 3 is exhausted by operating the damper. The gas may be exhausted from the section 6a. At the end of the exhaust duct 3 on the exhaust cylinder 6 side, a guide wall 64 bent in a plane arc shape as shown in FIG. The spiraling can be promoted below the exhaust pipe 6.

[0019]

According to the drying apparatus of the first aspect, the static pressure in the drying chamber 1 is slightly increased due to the installation of the current plate 10, and the hot air is subject to processing in the drying chamber 1. The object to be treated is passed through the drying chamber 1
It is possible to prevent the object to be processed from being dried in a short time while preventing the inside of the drying chamber 1 from being splattered or deformed.

In the drying apparatus according to the second aspect, the entirety is stored in a state where the door 11 of the drying chamber, the suction portion 40 of the blower 4, and the end of the exhaust pipe 6 face or are exposed to the outside. Since it is stored in the room 7, it becomes more compact and very easy to use indoors.

In the drying apparatus according to the third aspect, since the ventilation cross-sectional area in the exhaust duct 3 is larger than the ventilation cross-sectional area in the inlet portion of the exhaust duct 3, sound is reduced and gas-liquid separation is promoted in this section. Is done. The drying device according to claim 4,
Since the filter 41 is provided in the suction section 40 of the blower 4, clean air is always supplied to the drying chamber 1.

According to the drying device of the fifth aspect, since the circulation tube 60 connected to the intake section 40 of the blower 4 is communicated in the middle of the exhaust tube 6, the heat energy of the heating means 5 is reduced. In addition to being more effective and usable, sufficient drying can be performed even when the heat capacity of the heating means 5 is small.

According to the drying apparatus of the sixth aspect, since the air that has passed through the moisture absorbing filter 61 is supplied to the circulation tube 60, the air containing moisture is supplied to the drying chamber 1. Circulation can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment in which a drying apparatus according to the present invention is applied to a dryer for a plated product after cleaning.

FIG. 2 is a partial sectional view taken along an arrow AA in FIG.

FIG. 3 is a schematic plan view of the apparatus of FIG.

FIG. 4 is an enlarged sectional view of a connection portion between an exhaust pipe and a circulation pipe in the apparatus of FIG.

FIG. 5 is a partially enlarged plan view showing a modification of the exhaust duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drying room 1a Basket 10, 10a Rectifier plate 11 Door 12 Bottom frame 13 Perimeter wall plate 14 Ceiling plate 2 Blast duct 20 Connection part 3 Exhaust duct 30 Drainage drain 31 Connection part 4 Blower 40 Suction part 41 Filter 42 Motor 5 Heating means 6 Exhaust tube 6a Exhaust end portion 60 Circulating tube 61 Moisture absorption filter 62 Flange 63 Hole 64 Guide wall 7 Storage room 70 Frame 71 Cover 72 Leg 8 Control panel 80 Temperature sensor

Claims (6)

[Claims] 1. A drying chamber 1 in a vertical position in which an air duct 2 is connected to an upper part and an exhaust duct 3 is connected to a bottom part, a blower 4 for blowing air to the drying chamber 1 through the air duct 2, A heating means 5 installed in the middle of the duct 2, an exhaust pipe 6 connected to the exhaust duct 3, and a drainage drain 30 provided below the exhaust duct 3.
A rectifying plate 10 formed of a perforated plate or a mesh body installed at the bottom of the drying chamber 2, and a door 11 installed at the front of the drying chamber 2. . 2. The whole of the storage chamber 7 is stored in a state where the door 11 of the drying chamber, the suction part 40 of the blower 4, and the end of the exhaust pipe 6 face or are exposed to the outside. The drying device according to claim 1. 3. The exhaust duct 3 has a pipe-like connecting portion 3.
1 and connected to the drying chamber 1 and the exhaust duct 3
The drying device according to claim 2, wherein a cross-sectional area perpendicular to the ventilation direction in the inside is larger than a cross-sectional area perpendicular to the ventilation direction in the connection portion 31. 4. The drying device according to claim 2, wherein a filter 41 is provided in the suction section 40 of the blower 4. 5. In the middle of the exhaust pipe 6, the blower 4
The drying device according to any one of claims 2 to 4, wherein a circulation tube 60 connected to the suction unit 40 is connected. 6. The drying device according to claim 5, wherein the circulation cylinder is supplied with air that has passed through a moisture absorption filter.