KR100822809B1 - A hot wind drier and method for drying - Google Patents

Abstract

An apparatus and a method drying a target by inverting the direction of heated wind in order to dry upper and lower layers of the target uniformly are provided to obtain a high-quality target by uniformly drying the target without changing the direction of the target. A drying chamber is divided into a first drying chamber(120) and a second drying chamber(130). The first drying chamber is formed at a sidewall thereof with four input/output ports(170a-170d) of circulating heat wind. The four input/output ports have reverse plates(172) so that the reverse plates close the input/output ports simultaneously. The reverse plate is fixed to an opening/closing shaft(171). A driving motor(173) is mounted on one end of the opening/closing shaft.

Description

A hot wind drier and method for drying that can invert the direction of hot air to make the drying rate between the upper and lower layers uniform.

The present invention relates to a dryer, and more particularly, to a hot air dryer that does not have to replace the drying box by sending hot air from the bottom to the top or from the top to the bottom of the drying box installed in multiple stages.

In general, a hot air dryer is composed of a repeated action of making hot air from a burner or a heater and supplying it into a drying room, and recovering and resupplying it back to a burner or a heater. The hot air dryer stacks a plurality of drying boxes from the bottom to the top in a drying chamber, and supplies hot air to dry the dried items placed on the drying box.

Such a dryer is classified into a bottom wind type and a side wind type according to the direction of the wind. First, a look at the bottom wind type hot air dryer.

1 is a cross-sectional view schematically showing the underwind type hot air dryer.

Referring to FIG. 1, the bottom wind type hot air dryer 10 includes a heat source 11 at one side and a drying chamber 12 at the other side. At this time, the heat source 11 is provided with fossil fuel or electric heater and the like so that hot air circulates through the drying chamber 12 and the heat source 11 by the blower 13. In the drying chamber 12, a plurality of drying boxes 14 are stacked up and down, and the dry items are placed on the drying boxes 14.

Therefore, the above-described hot air dryer 10 is blown by the blower 13 to the bottom of the drying chamber 12, the hot air generated from the heat source 11, the hot air passes through the multi-stage drying box 14 By circulating back through the top to the heat source (11).

However, such underwind type hot air dryer has a difference in temperature between the drying box of the lower layer to which the hot air is first supplied and the drying box of the upper layer to which the hot air is finally discharged. There is a problem that needs to replace the drying box of the upper and lower layers.

Designed to solve this problem is a side wind type hot air dryer, Figure 2 is a cross-sectional view schematically showing a side wind type hot air dryer.

Referring to FIG. 2, the side wind-type hot air dryer 20 includes a heat source 21 and a drying chamber 22 in the same way as the bottom wind-type hot air dryer, but a barrier film 24 prevents hot air from entering the bottom of the drying chamber 22. ), The duct 25 is provided on both sides of the drying chamber 22, so that hot air is supplied by the duct 25 to be supplied to the drying box 24 of each layer.

Therefore, the side wind type hot air dryer 20 enters the duct 25 while the hot air generated from the heat source 21 is blown by the blower 23 and supplied to the drying chamber 22, and then the drying box for each floor from the duct 25. The hot air supplied to the lower part of the 24 is passed through the drying boxes 24 and circulated back to the heat source 21 through the upper part of the drying chamber 22.

However, such a side wind-type hot air dryer also has a problem that the drying difference of the dried object is caused by the temperature difference between both sides and the center of the drying box because the hot air is supplied from the side.

The present invention is devised to solve the problems of the above-described bottom and side wind hot air dryer, it is possible to allow the hot air supplied from the heat source to be supplied from the bottom of the drying chamber to the top, or to be supplied from the top of the drying chamber to the bottom It is to provide a hot air dryer and a drying method that may enable.

Hot air dryer of the present invention for solving the above problems,

In a hot air dryer for drying a dry item by stacking a drying box in multiple stages in a drying chamber and circulating the drying chamber and the heat source by hot air generated from a normal heat source,

The drying chamber is composed of a first drying chamber and a second drying chamber divided into equal parts by a partition wall so as to communicate with the upper side, and four entrances and exits are formed on the side wall of the first drying chamber, and hot air is circulated. It passes through and communicates with the second drying chamber, and between the four inlet and outlet provides a hot air dryer, characterized in that the reverse plate is installed to block the upper and lower two inlet and outlet at the same time.

At this time, the inversion plate is fixed to the opening and closing shaft transversely between the four inlet and outlet, it is preferable that the driving motor is mounted on one end of the opening and closing shaft.

Alternatively, the drying method of the hot air dryer as described above,

In a drying method in which a hot air supplied from a heat source is circulated to a drying chamber and the dried object is placed in a drying box stacked in multiple stages in the drying chamber, and dried.

The drying chamber is partitioned in the longitudinal direction and provided as two drying chambers, so that the partitioned upper side communicates with each other,

The circulation of the hot air,

풍) Hot air is supplied from the heat source to the first drying chamber, proceeds upward in the first drying chamber, communicates with the partitioned upper part, proceeds downward in the second drying chamber, and recovers the heat source.

Ii) supplied from the heat source to the second drying chamber by direct flow without passing through the first drying chamber, proceeding upward in the second drying chamber, communicating with the partitioned upper part and proceeding downward in the first drying chamber, and then recovering the heat source.

Have two types,

It provides a drying method of the hot air dryer, characterized in that two types of hot air circulation method is selectively repeated with time.

As described above, the hot air dryer and the drying method thereof according to the present invention can repeat the supply direction of the hot air once upward and downward downward, so that the difference in drying between the upper and lower layers of the dried object placed in the drying chamber can be evenly changed without a replacement operation. It is possible to obtain a high-quality dry matter.

Hereinafter, a hot air dryer according to a preferred embodiment of the present invention with reference to the accompanying drawings.

Figure 3 is a perspective view showing a hot air dryer according to the present invention, Figure 4 is a perspective view showing a coupling portion of the drying source and the heat source by removing the heat source shown in FIG.

Referring to FIGS. 3 and 4, the hot air dryer 100 according to the present invention includes a sealed container-shaped drying container 110 and a heat source 150 installed below one side of the drying container 110.

First, the drying bin 110 is divided in the longitudinal direction is provided with two drying chambers (120, 130). At this time, the plate 111 partitioning the two drying chamber (120, 130) is the upper portion of the hot air moving passage 125 so that the upper portion is not in close contact with the ceiling of the drying chamber 110 to communicate the two drying chamber (120, 130). ) Is formed. In the first drying chamber 120 and the second drying chamber 130 of the drying barrel 110 formed as described above, a plurality of drying boxes 140 are installed to be detachably installed vertically.

On the other hand, the heat source 150 is installed on one side lower portion of the drying cylinder 110, four hot air inlet and outlet is formed in this portion. That is, the entrances 1 and 2 formed at the top and bottom of the left side are the inlets through which the hot air is supplied from the heat source 150, and the entrances 3 and 4 formed at the top and the bottom of the right side traverse the first and second drying chambers 120 and 130. And the exit to be recovered. At this time, the second entrance 170b is passed through the direct without passing through the first drying chamber 120 to communicate with the lower portion of the second drying chamber 130, and the first entrance 170a is the first drying chamber 120 immediately. It communicates with the lower part of. And exit 3 (170c) is communicated to the lower portion of the second drying chamber 130 by direct tract without passing through the first drying chamber 120, like entry 2 (170b), exit 4 (170d) is the first entrance ( As in 170a), it directly communicates with the first drying chamber 120.

Alternatively, the first entrance 170a and the fourth exit 170d may communicate with the second drying chamber 130, and the second entrance 170b and the third exit 170c may communicate with the first drying chamber 120. It's okay.

On the other hand, the reverse opening and closing plate 172 for selectively opening and closing the four entrances and exits to reverse the circulation direction of the hot air is provided transversely to the center of the four entrances and exits. That is, the reversal opening and closing plate 172 is provided in pairs, and rotates in the transverse direction between the first entrance 170a and the second entry 170b and between the third exit 170c and the fourth exit 170d. It is fixed to the opening and closing shaft 171 to be mounted. One end of the opening and closing shaft 171 is provided with a driving motor 173 for rotating the opening and closing shaft 171. Accordingly, the opening / closing shaft 171 rotated by the driving motor 173 is rotated halfway at 180 ㅀ and the first inlet 170a and the third outlet 170c formed on the upper side, or the second inlet 170b formed on the lower side. And 4 exit 170d are opened and closed at the same time.

In addition, the front of the drying tank 110 is formed with a swing door 115 for opening and closing the first drying chamber 120 and the second drying chamber 130, the opening door 115 is inspected so that the inside of the drying chamber can be observed. Window 116 is formed.

The heat source 150 for supplying hot air to the drying vessel 110 formed as described above is composed of a blower 151, a heater 152, a humidity controller 160, an inlet 153, and an outlet 154. . That is, the blower 151 is installed at the first inlet 170a and the second inlet 170b to supply hot air, and the heater 152 is installed at the third outlet 170c and the fourth outlet 170d to provide hot air. And the inlet 153 is formed between the heater 152 and the blower 151 to draw in the outside air, and the outlet 154 is provided with the outside air as much as the outside air comes in from the inlet 153. The humidity control device 160 checks the humidity of the hot air circulated therein so as to properly open and close the inlet 153.

The configuration of such a heat source can be used as a heat source using a burner in addition to the electric heater method selected as an embodiment in the present invention in a conventional configuration.

And the upper part of the heat source 150 is provided with a control panel 180 for controlling the entire device. The operation panel 180 is a place for managing various sensors, and is configured to check and apply the temperature and humidity of the hot air, and apply and check the temperature of the heater.

That is, the operation panel 180 may be configured to control the driving motor 173 to supply hot air in one direction and to reverse the hot air in the opposite direction after a predetermined time, and to control humidity by a wet bulb sensor. By controlling the device 160, the humidity of the hot air can be adjusted, and the temperature of the heater and hot air can be set by the dry bulb sensor. Here, the dry bulb sensor (A) is disposed between the inlet and outlet and the blower as shown in Figure 3, the wet bulb sensor (B) is preferably disposed in the lower portion of the second drying chamber.

Hereinafter, an operation method of the hot air dryer 100 formed as described above and a drying method of the dried product will be briefly described.

First, the dried items are put in a drying box 140 and placed in the first drying room 120 and the second drying room 130.

Next, the swing door 115 is closed and the operation panel 180 is set. At this time, the operation panel 180 is set to match the temperature and humidity of the hot air. In other words, the temperature and humidity of the hot air is preferably set to a temperature and humidity specified according to the type of the dry matter.

After all the settings are completed, when the start button is pressed, the heater 152 is heated and the blower 151 is operated to supply the hot air generated through the first inlet 170a that is opened. At this time, the inverting plate 172 is rotated downward to block the first entrance 170b and the fourth exit 170d will be described in the form of the first entrance 170a and the third exit 170c open.

The hot air supplied to the first inlet 170a enters the lower part of the first drying chamber 120 and moves upward from the lower part of the drying box 140 and the dry items stacked in the first drying chamber 120.

The hot air moved to the upper portion of the first drying chamber 120 is transferred to the second drying chamber 130 through the hot air moving passage 125 formed at the upper portion of the diaphragm 111.

The hot air passed to the second drying chamber 130 enters the upper portion of the second drying chamber 130 and moves downward from the upper portion through the drying box 140 and the dried object stacked in the second drying chamber 130.

The hot air moved to the lower part of the second drying chamber 130 is circulated to the heater 152 through the third exit 170c that is opened.

When the hot air becomes hot and humid due to the moisture absorbed from the dry matter while performing such a repeating operation, the humidity control device 160 is operated to open the inlet 153, and the outside air is opened by the open inlet 153. Will come in. Therefore, hot air that is hot and humid is discharged to the outside as much as the outside air is discharged 154 to maintain the internal humidity.

On the other hand, after a predetermined time passes by the program of the control panel, the driving motor 173 is operated to rotate the inverting plate 172 to block the first entrance 170a and the third exit 170c, and the second entrance 170b. And 4 exit 170d.

When the 2nd entrance 170b and the 4th exit 170d are opened, the hot air supplied from the blower 151 is supplied directly to the lower part of the 2nd drying chamber 130 through the 2nd entrance 170b, and the 2nd drying room ( The hot air passed from the lower part of the 130 to dry the dried material is moved to the upper part of the first drying room 120 through the hot air moving passage 125 formed at the upper part of the diaphragm 111 and the upper part of the first drying room 120. After proceeding downward from the dried to dry, it is traversed through the exit 4 (170d).

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims You will understand.

1 is a cross-sectional view schematically showing a downwind hot air dryer according to the prior art,

Figure 2 is a cross-sectional view schematically showing a side wind hot air dryer according to the prior art,

3 is a perspective view showing a hot air dryer according to the present invention;

Figure 4 is a perspective view showing the coupling portion of the drying tank and the heat source by removing the heat source in Figure 3, and

5 is a perspective view showing two types of hot air flow of the hot air dryer according to the present invention.

Claims (3)

In a hot air dryer for drying a dry item by stacking a drying box in multiple stages in a drying chamber and circulating the drying chamber and the heat source by hot air generated from a normal heat source, The drying chamber is composed of a first drying chamber and a second drying chamber divided into equal parts by a partition wall so as to communicate with each other from the upper side. A hot air dryer, passing through one drying chamber, communicating with the second drying chamber, and an inverting plate disposed between the four entrances and exits to simultaneously block two upper and lower entrances and exits. The hot air dryer according to claim 1, wherein the inverting plate is fixed to an opening / closing shaft transversely disposed between the four inlets and outlets, and a driving motor is mounted at one end of the opening / closing shaft. In a drying method in which a hot air supplied from a heat source is circulated to a drying chamber and the dried object is placed in a drying box stacked in multiple stages in the drying chamber, and dried. The drying chamber is partitioned in the longitudinal direction and provided with two first drying chambers and a second drying chamber, the partitioned upper side is in communication with each other, The circulation of the hot air, Iii) hot air is supplied from the heat source to the first drying chamber, proceeds upward in the first drying chamber, communicates with the partitioned upper part and proceeds downward in the second drying chamber, and then recovers the heat source. Ii) supplied from the heat source to the second drying chamber through the first drying chamber without going through the first drying chamber, proceeding upward in the second drying chamber, communicating with the partitioned upper part and proceeding downward from the first drying chamber, and then recovering the heat source. , Have two types, Drying method of the hot air dryer, characterized in that the two types of hot air circulation method is selectively repeated with time.

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