KR101452161B1 - Drying method for agricultural products using drier of agricultural products - Google Patents

Abstract

The present invention relates to a drier for drying agricultural products and a drying method of agricultural products using the same, in which moisture discharged from products (subject to be dried) during drying increases humidity in a drying room and then an opening air damper discharges moisture, leading to prevention (inhibition) of mold caused by humidity in the drying room; regular discharge and maintenance of moisture and drying prevent agriculture products (2) from being over dried and under drying (unripened), leading to a quality of dried agricultural products; an electric heater(24) and a burner (B) are simultaneously driven to make the temperature of the drying room reach a preset temperature in early time to need a huge quantity of heat; and two energy sources like electricity and oils (or gas) can be used together or separately by the electric heater (24) controlling temperature during drying.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for drying agricultural products,

The present invention relates to a dryer for agricultural products and a method for drying agricultural products using the same. Specifically, when the humidity of the drying room is raised by the moisture discharged from agricultural products (drying materials) during the drying process, the air damper is opened to regulate fungal growth And to achieve good aging and drying of the agricultural products through appropriate moisturizing and drying.

Generally, agricultural products such as anchovy, mushrooms, rice, barley, wheat, dried persimmon, jujube, omija, gugija, blueberry, chungkukjang, onion, meju, and herbaceous plants are heated by using heating means such as an electric heater Etc.) has a problem in that the drying time is shortened because the agricultural products are dried while discharging moisture and heat, but the commerciality is deteriorated.

For example, when dry persimmon is dried and matured, the conventional agricultural driers are configured to circulate heated air and dry the persimmon dry easily, so that there is no mold generation. However, the moisturizing and moisturizing is not maintained for a suitable period of time, There is a problem in that the commercial quality is deteriorated and the texture of the dried perspiration skin is hard and the overall beauty is lowered due to overdrying.

Korean Patent Laid-Open Publication No. 10-2012-0063098 (title of the invention: Drying system for agricultural products using hot and cold air freshener, patented on Jun. 15, 2012) Korean Patent Publication No. 10-0869578 (entitled: Drying Apparatus for Agricultural Products, Patent Publication on Nov. 21, 2008) Korean Registered Patent No. 10-0975021 (Name of the invention: Dryer for Agricultural Products, issued on Aug. 11, 2010)

In the present invention, when the humidity of the drying room is raised by the moisture released from the agricultural products in the drying process, the air damper is opened and the air is damped for a predetermined time to prevent (suppress) fungus caused by the humidification. And a method for drying agricultural products using the same.

It is another object of the present invention to provide an agricultural product dryer in which agricultural products are aged and dried by allowing the moisture generated in the agricultural product drying process to be moistened with a blower for a predetermined time, and a method for drying agricultural products using the same.

Another object of the present invention is to provide an agricultural product dryer in which economical drying is achieved by simultaneously or selectively using an electric heater and a burner, and a method for drying agricultural products using the same.

The agricultural produce dryer of the present invention comprises a drying chamber (4) of a predetermined volume; A top face member 5 and a bottom face member 6 and a side face member 7 and a rear face member 8 and a door 9 surrounding the drying chamber 4; A circulation duct (10) installed on the top surface member (5) and having a circulation path (11) formed therein; A suction hole 12 formed at the center of the upper surface member 5; An inflow hole 13 formed on both sides of the top surface member 5; A blower 23 installed above the suction hole 12; An electric heater 24 installed around the blower 23; A duct-shaped induction member (14) vertically installed on an inner side surface of the side member (7) and connected to the inflow hole (13); A plurality of discharge holes (15) formed at predetermined intervals in the guide member (14); An intake duct (28) installed outside the circulation duct (10); An air damper 25 installed at one side of the intake duct 28; Opening / closing means (26) for opening / closing the air damper (25); An intake hole (29) connecting the intake path (27) and the drying chamber (4); A guide member 32 installed at a lower portion of the suction hole 12; A drain port (30) installed on one side of the drying chamber (4); A temperature sensor 20 installed in an upper space of the drying chamber 4; . ≪ / RTI >

The agricultural produce dryer of the present invention comprises a drying chamber (4) of a predetermined volume; A drain port (30) installed on the drying chamber (4); A circulation path (11) separated from the drying chamber (4) by an isolating member (44); A suction hole (12) formed on the upper portion of the isolation member (44); An inflow hole 13 formed in the lower portion of the isolation member 44; A blower 23 installed on the circulation path 11; An electric heater 24 installed below the blower 23; A heat exchanger Bb installed under the electric heater 24; A burner B connected to the heat exchanger Bb; An air damper 25 and an air damper opening / closing means 26 installed on the circulation path 11; A temperature sensor 20 installed in an upper space of the drying chamber 4; . ≪ / RTI >

A method for drying agricultural products using a dryer for agricultural produce according to the present invention comprises the steps of: A. feeding agricultural products into a drying chamber; B. heating the air with a temperature controlled electric heater; C. heating and drying the agricultural product while forcibly circulating the heated air to the drying chamber using a blower; D. stopping the electric heater and introducing outside air into the drying chamber for a predetermined time while moistening air of the drying chamber to the outside, aging and drying the agricultural product; E. repeating the above heat drying and aging drying to complete the drying of agricultural products; Lt; / RTI >

A method for drying agricultural products using a dryer for agricultural produce according to the present invention comprises the steps of: I. heating air with a temperature controlled electric heater and a burner; J. heating and drying the agricultural products while forcibly circulating the heated air to the drying chamber using a blower; K. heating and drying the agricultural product while stopping the burner and controlling the temperature with an electric heater; L. The step of aging and drying the agricultural products by stopping the electric heater and introducing the outside air into the drying chamber for a predetermined time while moisturizing the air in the drying chamber to outside; M. repeating the above-mentioned heat drying and aging drying to complete the drying of agricultural products; Lt; / RTI >

The method for drying agricultural products using the dryer of the present invention comprises: a. Setting drying conditions such as the type of the agricultural product to be dried, the drying amount, and the drying property; b. Detecting a drying chamber temperature with a temperature sensor and inputting the detected temperature to the controller; c. Comparing the current temperature of the drying chamber inputted from the temperature sensor with a preset temperature preset in the controller; d. If the current temperature of the drying chamber is lower than the set temperature, turning on the electric heater and blower and closing the air damper to circulate the heated air to dry the agricultural product; e. Heating the electric heater until the current temperature inputted from the temperature sensor coincides with the preset temperature; turning off the electric heater when the current temperature is equal to the set temperature, and opening the air damper for moisturizing; f. Discharging the drying room air whose humidity is raised by the moisture discharged from agricultural products through the drain port to the outside by turning on the blower during the set time; g. Stopping the blower when the set time is exceeded and closing the air damper to complete the dehumidification of the drying chamber; h. If the agricultural produce is less dry, continue to b. Returning to the step, continuing the drying until the agricultural product is dried, and terminating the drying when the drying of the agricultural product is completed; Lt; / RTI >

The method for drying agricultural products using the dryer of the present invention comprises: a. Setting drying conditions such as the type of the agricultural product to be dried, the drying amount, and the drying property; b. Detecting a drying chamber temperature with a temperature sensor and inputting the detected temperature to the controller; c. Comparing the current temperature of the drying chamber inputted from the temperature sensor with a preset temperature preset in the controller and judging it; d. If the current temperature of the drying chamber is lower than the set temperature, turning on the electric heater and blower and closing the air damper to circulate air while drying the agricultural product; e. Even if the drying room temperature rises due to the heating of the electric heater and the circulating air heating, if the temperature difference between the current temperature and the set temperature is less than 2 to 4 DEG C, the electric heater is kept ON to warm the drying chamber, Increasing the drying chamber heating rate by turning on the burner in the ON state of the electric heater when the temperature difference of the temperature exceeds 2 to 4 DEG C; f. Turning off the burner when the temperature of the drying room rises due to the ON operation of the burner and the current temperature is lower than the set temperature but the temperature difference is maintained at 2 to 4 DEG C or less; g. Turning off the electric heater when the current temperature of the drying chamber inputted from the temperature sensor coincides with the set temperature, and opening the air damper for moisturizing; h. Discharging the drying room air whose humidity is raised by the moisture discharged from agricultural products through the drain port to the outside by turning on the blower during the set time; i. Stopping the blower when the set time is exceeded and closing the air damper to complete the moisturizing; j. If the agricultural produce is less dry, continue to b. Returning to the step, continuing the drying until the agricultural product is dried, and terminating the drying when the drying of the agricultural product is completed; Lt; / RTI >

The present invention achieves proper drying and / or aging of the agricultural product 2 by suitably setting and controlling the ON / OFF (i.e., the hysteresis width) of the electric heater 24 which is one of the drying means, Since the temperature and humidity of the agricultural product (2) are maintained by appropriately controlling the ON / OFF time of the electric heater (24) until the set drying temperature is reached, the moisture in the agricultural product (2) Drying is achieved.

The present invention circulates heated air to the blower 23 when the electric heater 24 is ON and turns off the electric heater 24 when the current temperature reaches the set temperature, The air blower 23 is operated for a predetermined period of time and the air is appropriately moisturized by the pouring port 30 to prevent the occurrence of fungi and to achieve excellent aging and drying and also to prevent overdrying and non- .

The present invention relates to a method of drying dried persimmon which is one of the agricultural products (2), which uses an air damper (25), a blower (23) and a feed port (30) And it is prevented from the occurrence of fungi. Since the moisturizing and moisturizing are given for the appropriate amount of time on the sensory skin, it is aged by the same color and texture as dried in dried persimmon vetch, natural dehydration by proper moisturizing and moisturizing and drying, And the moisture content is maintained at about 25 ~ 30%, and the sugar content is very high, so that it is possible to obtain a good quality dried persimmon which can be enjoyed by both sexes.

The present invention can also use the electric heater 24 and the burner B so that the electric heater 24 and the burner B are simultaneously operated for the initial drying requiring a large amount of heat so that the temperature of the drying chamber 4 is maintained at the set temperature And it is also a very useful invention that has the effect of being able to use two kinds of energy of electricity and oil together or selectively.

1 is a flowchart of a method of drying agricultural products using an agricultural product dryer shown in an embodiment of the present invention.
2 is a flow chart of a method of drying an agricultural product using an agricultural product dryer shown in another embodiment of the present invention.
3 is an external perspective view of the agricultural product dryer shown in one embodiment of the present invention.
4 is a longitudinal sectional view of the dryer of the agricultural product dryer shown in one embodiment of the present invention.
Fig. 5 is a cross-sectional view of the dryer of the agricultural product dryer shown in one embodiment of the present invention in the widthwise direction.
6 is a cross-sectional view of the agricultural product dryer shown in one embodiment of the present invention in the width direction.
7 is a sectional view of the dryer of the agricultural product dryer shown in one embodiment of the present invention.
8 is a cross-sectional view of the agricultural product dryer shown in one embodiment of the present invention.
Fig. 9 is a side view of the agricultural product dryer shown in another embodiment of the present invention. Fig.
10 is a cross-sectional view of the dryer of the agricultural product dryer shown in another embodiment of the present invention.
11 is a cross-sectional view of the agricultural product dryer shown in another embodiment of the present invention.
12 is a circuit block diagram of the controller shown in one embodiment of the present invention.
13 is a front view of the touch panel of the controller shown in the embodiment of the present invention.
Fig. 14: Flow chart of the method of drying agricultural produce shown in one embodiment of the present invention.
Figure 15: Flow chart of the method of drying agricultural produce shown in another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention, the same components as in the drawings are denoted by the same reference numerals as possible, and detailed descriptions of known configurations and functions are omitted so as not to obscure the gist of the present invention.

FIG. 1 is a flow chart of a method for drying agricultural products according to an embodiment of the present invention, which shows a process of heating and drying agricultural products using an electric heater, and aging and drying the agricultural products. Examples of the agricultural products include drying products such as pepper, mushroom, rice, barley, (A) introducing agricultural products (including marine products such as anchovies) such as jujube, omija, gugija, blueberry, chonggukjang, onion, meju and herbals into a drying chamber, heating the air with a temperature- (C) heating and drying the agricultural product while forcibly circulating the heated air using a blower to the drying chamber, stopping the electric heater, introducing outside air into the drying chamber for a predetermined time using a blower, (D) a step of moisturizing the humidified air in the drying room by external agitation to dry the agricultural product, and the drying of the agricultural product is completed by repeating the heat drying and aging drying It is in step (E).

FIG. 2 is a flow chart of a method of drying agricultural produce according to an embodiment of the present invention, showing a process of heat-drying and aging and drying agricultural products using burners and electric heaters using fossil fuels such as oil, gas, (H) a step (H) of putting agricultural products (including marine products such as anchovies) into the drying chamber such as pepper, mushroom, rice, barley, wheat, dried persimmon, jujube, (I) heating the air with a temperature controlled electric heater and a burner, (J) heating and drying the agricultural product while forcibly circulating the heated air using a blower to the drying chamber, stopping the burner, (K) heating and drying the agricultural product, stopping the electric heater, introducing outside air into the drying chamber for a predetermined time using a blower, and humidifying by the moisture discharged from agricultural products Baeseup to the room air humidity to the outside is a step to produce (L), step (M) repeating the heating and drying and dried to complete the drying of the fermentation of agricultural products for dry aging.

In addition, since humidity of the drying room is appropriately maintained by the moisturizing air, the humidity of the drying room is maintained constantly, and the dryness of the agricultural products is aged and dried, and excessive deformation of the agricultural product skin is prevented during the drying process, Drying is achieved.

In the case of the burner, the burner or the burner and the electric heater are simultaneously operated for the initial drying requiring a large amount of heat, the temperature of the drying room is rapidly raised to the set temperature, the burner is stopped, It is economical because it can be dried.

Fig. 3 is a perspective view of the agricultural produce dryer 1 shown in Fig. 3, and Fig. 4 and Fig. 5 are longitudinal and lateral cross-sectional views of the agricultural produce dryer 1 shown as an example of the present invention. A drying chamber 4 having a predetermined volume in which the conveyance truck 3 on which the conveyance truck 3 is loaded and unloaded and the upper surface member 5 and the lower surface member 6 and the side surface member 7 surrounding the drying chamber 4, A circulation duct 10 provided in the upper part of the upper surface member 5 and having a circulation path 11 formed therein so that the heating air can be circulated; A suction hole 12 connecting the drying chamber 4 and the circulation path 11, an inlet hole 13 formed at both sides of the upper surface member 5, An air blower 23 for sucking air and circulating the air to the inflow hole 13, an electric heater 24 provided around the blower 23 for heating the circulating air, A duct type induction member which is vertically provided on a surface of the induction member and is connected to the induction hole to introduce heated air of the circulation path; A plurality of discharge holes 15 for discharging the heated air introduced into the drying chamber 4 through the intake duct 4 and an intake duct 28 provided inside the circulation duct 10 and having an intake passage 27 therein, An air damper 25 installed at one side of the air damper 25 for allowing outside air to flow into the air intake path 27, opening and closing means 26 for opening and closing the air damper 25, And an air damper 25 which is provided directly below the suction hole 12 and guides the air in the drying chamber 4 to be introduced into the circulation path 11 through the suction hole 12, A guide member 32 formed with a guide hole 31 for allowing the air introduced through the intake path 27 to flow into the circulation path 11 and a part of the moisture generated in the drying process A drain port 30 provided on one side of the drying chamber 4 so as to be discharged to the outside of the drying chamber 4 and an upper space of the drying chamber 4 or an inner surface of the upper surface member 5, And a temperature sensor (20) for inputting to the controller (19).

The humidity sensor senses the humidity of the drying chamber 4 and inputs the humidity to the controller.

The agricultural products (2) which can be dried or aged and dried in the present invention include agricultural products such as pepper, mushroom, rice, barley, wheat, persimmon, jujube, omija, gugija, blueberry, chungkukjang, onion, meju, And aquatic products).

The blower 23 is composed of a fan 21 and a fan motor 22 and circulates the air heated by the electric heater 24 to the drying chamber 4 to dry the agricultural product 2. The fan 21 may be a sirocco fan or a turbo fan that efficiently sucks air in the drying chamber 4 and then discharges the air to the circulation path 11. The fan 21 may be installed around the fan 21, The electric heater 24 to be installed is preferably circular or elliptical so as to uniformly heat the air circulated by the fan 21. A helical or circular heat sink or radiating fin is arranged on the outer surface of the electric heater 24 at a predetermined pitch Thereby achieving more efficient heat dissipation. Of course, a plurality of bar-shaped electric heaters can be installed horizontally or vertically at even intervals.

The air damper 25 includes an intake pipe 25a connected to one end of the air passage 11, a shaft rod 25b provided on the shaft in a direction orthogonal to the longitudinal direction of the intake pipe 25a, A damper 25c installed on the side of the intake pipe 25a and fixed to the shaft rod 25b and the damper 25c at 90 ° or a proper inclination, 5 and 7 show a state in which the damper 25c is vertically closed by the opening and closing means 26 and the intake tube 25a is closed.

The opening / closing means 26 may be a DC motor or a DC motor and a speed reducer, a rotary cylinder, or a solenoid for rotating the shaft rod 25b in normal and reverse directions.

The guide member 31 formed on the guide member 32 is opened to one side. 4 and 5, the heated air discharged to the drying chamber 4 through the discharge hole 15 is not sucked (discharged) directly to the suction hole 12 by the suction force of the blower 23, The drying efficiency of the agricultural product 2 is improved by heating and drying the agricultural product 2 while staying for a while. After that, the drying efficiency of the agricultural product 2 is improved and then the guide member 31 and the suction hole 12 of the guide member 32 are lifted up to the circulation path 11, The product 2 is dried by repeating the circulation process in which the heated air is discharged to the drying chamber 4 through the inlet hole 13 and the discharge hole 15 of the guide member 14. [

4 and 5 show a state in which the air is dried while circulating the air in the drying chamber 4 in a state that the electric heater 24 is turned on and the air damper 25 is closed A part of the water discharged from the agricultural product 2 in the drying process is discharged to the discharge port 30 in a state where the agricultural product 2 is aged by the air damper 25 being opened and the air damper 25 being opened, (Humidified) to maintain the proper humidity and aged. The moisturizing may be performed periodically by the controller 19 or may reflect the dry state.

4 and 5 show a state (drying mode) in which the agricultural product 2 is dried by the circulation of the heated air. The damper 25c is closed by the opening / closing means 26, 4 and 5, the air in the drying chamber 4 is guided through the guide hole 31, the suction hole 12, the fan 21, and the suction hole 21 by the suction force of the blower 23, The electric heater 24 is turned on and the circulation path 11 to the inflow hole 13 to the induction member 14 to the discharge hole 15 to the drying chamber 4 As the heated air circulates, the agricultural product 2 is dried to the set temperature.

Fig. 6 shows a state (aging mode) in which the agricultural product 2 is aged in a moisturizing state. In the state where the damper 25c is opened by the opening / closing means 26 and the intake tube 25a is opened, The air outside the drying chamber 4 is sucked by the suction force of the blower 23 through the intake pipe 25a, the intake path 27, the intake air hole 29, the guide hole 31, The suction hole 12, the fan 21, the electric heater 24, the circulation path 11, the inflow hole 13, the induction member 14, The air is discharged to the outside of the agricultural product dryer 1 through the discharge hole 15, the drying chamber 4 and the discharge port 30a of the discharge port 30, 31) -> suction hole 12 -> fan 21 -> off electric heater 24 -> circulation path 11 -> inlet hole 13 -> induction member (2) of the drying chamber (4) is maintained while the water is circulated to the drying chamber (14) -> the discharge hole (15) -> the drying chamber (4)

When the humidity of the drying chamber 4 is raised by moisture discharged from the agricultural product 2 in the drying process, the air damper 25 is opened and moisturized to prevent the generation of moisture and fungi in the drying chamber 4, Moisturizing and drying of the agricultural product (2) prevents drying and non-drying of the agricultural product (2).

7 shows a state in which the damper 25c of the air damper 25 is vertically held by the opening and closing means 26 so that the intake tube 25a is closed and Figure 8 shows the air damper 25 The damper 25c is horizontally held and the intake pipe 25a is opened.

The present invention may include a burner (B) for instantly raising the temperature at the initial stage of drying or for instantly heating the air to a desired temperature by using fuel such as gas or oil when the temperature deviation is severe.

9 to 11 are a side view and a cross-sectional view of another embodiment of the agricultural product dryer 1a that also uses the burner B and the electric heater 24. The burner B is under the control of the controller 19 and can raise the temperature of the drying chamber 4 by directly supplying the heated air to the circulation path 11. The burner B can be used as the electric heater 24, Can be used.

The agricultural produce dryer 1a includes a drying chamber 4 having a predetermined volume for receiving a plurality of trays 39 on which the agricultural product 2 to be dried is placed, a feed port 30 provided on the top of the drying chamber 4, A circulation path 11 which is separated from the drying chamber 4 by an isolating member 44 installed at the top of the isolating member 44 and a suction hole 12 formed at the top of the isolating member 44, A blower 23 installed on the upper part of the circulation line 11 and composed of a fan 21 and a fan motor 22, an electric heater 24 provided below the blower 23, An oil or gas burner B connected to the heat exchanger Bb under the control of the controller 19 and an air damper (not shown) provided on the circulation path 11 25 and an air damper opening and closing means 26 and a temperature sensor 20 installed in the space above the drying chamber 4 or on the ceiling and sensing the temperature of the drying chamber 4 and inputting it to the controller 19. [

The electric heater (24) and the heat exchanger (Bb) can exchange installation positions. Further, the blower 23, the electric heater 24, and the heat exchanger Bb may be disposed in the reverse order.

The air damper 25 is provided with a damper 25c that is opened and closed by the opening and closing means 26. The damper 25c opens the air intake hole 29 formed in the upper part of the circulation path 11 during aging, During the drying period, the air intake holes (29) are closed to shut off the moisturization and the agricultural products (2) are dried while the heated air is circulated to the drying chamber (4).

The opening and closing means 26 is provided with a DC motor or a DC motor and a speed reducer or a cylinder rod so that the damper 25c provided in the direction of the opening and closing means 26 is horizontally or inclined to open or close the air intake hole 29 A cylinder, a solenoid, or the like.

The drain port 30 is connected to the upper portion of the circulation line 11 so that a part of the moisture generated in the drying process of the agricultural product 2 can be discharged to the outside through the drain hole 30a during the aging period in which the blower 23 operates. .

FIG. 10 is a cross-sectional view showing a dry state (drying mode) of another embodiment of the present invention. In a state in which an appropriate amount of dried agricultural product (dried product) 2 is put in a drying chamber 4, The air circulated by the blower 23 is firstly heated while passing through the electrothermal heater 24 and is heated by the operation of the burner B Passes through the heat exchanger (Bb), and then flows into the lower portion of the drying chamber (4) through the air suction hole (29) under the isolating member (44).

The heated air introduced into the lower portion of the drying chamber 4 is moved to the upper portion of the drying chamber 4 by the circulating pressure of the blower 23 to dry the agricultural products 2 contained in the tray, To the isolated circulation path (11) through the circulation path (11).

In the case of the agricultural product dryer 1a, the electric heater 24 and the burner B can be used in common, so that the electric heater 24 and the burner B are simultaneously operated for the initial drying requiring a large amount of heat, 4) The temperature can be raised rapidly to the set temperature. Thereafter, drying can be performed by heating and drying with an electric heater (24) which is easy to control the temperature. Thus, the drying efficiency is excellent and the electric energy and oil (or gas) Can be used together or selectively so that economical drying can be achieved which can reduce drying cost and drying time.

(Aging mode) of another embodiment of the present invention. After the electric heater 24 and the burner B are stopped by the controller 19, the air damper 25 The outside air is introduced into the circulation path 11 through the intake hole 29 and then flows into the drying chamber 11 through the intake hole 29 under the isolation member 44 The humidity of the agricultural products 2 discharged into the drying chamber 4 is increased and the humid air is introduced into the drying chamber 4 through the discharge port 30a of the discharge port 30, And a part of the air is introduced into the circulation path 11 and then the above process is repeated during the aging period in which the blower 23 is operated so that the moisturization of the drying chamber 4 is attained and the proper moisture of the agricultural product 2 ). When the aging period is exceeded, the drying process of Fig. 10 and the aging process of Fig. 11 And then complete drying and aging are carried out.

The temperature sensor 20 or the temperature sensor 20 installed on the upper side of the drying chamber 4 or the inner surface of the upper surface member 5 or on the upper side of the circulation path 11 as shown in FIGS. A humidity sensor is installed to detect the temperature of the drying chamber 4 in real time and input to the controller 19. The controller 19 controls the input temperature inputted from the temperature sensor 20 and the setting unit S ) To control the electric heater 24 and / or the burner B so that the input temperature (the drying room temperature) is maintained at the set temperature.

11, the controller 19 determines the drying conditions such as the type of the agricultural product 2, the drying amount and the drying characteristics, etc., at the input of the control unit C composed of a central processing unit (CPU), a microcomputer A setting section S for setting the drying temperature, the blower operating time, the drying time, the drying period, the moistening time (air blowing delay time), the humidity conditioning period, whether the electric heater 24 and the burner B are operated singly or in combination, And a temperature sensor 20 for detecting (detecting) the temperature of the drying chamber 4 are connected to the control unit C. The electric heater 24, the fan motor 22 of the blower 23, (26) of the burner (25) and the burner (B), respectively.

13 is a touch panel of the controller 19 shown as an example of the present invention.

At the top of the touch panel, there are displayed a step display, a current temperature and set temperature, a set time and a remaining time, a moistening time (ventilation delay time), an aging time and an aging deviation and an air damper, A set temperature, a set time and a remaining time, a moistening time (blowing delay time), an aging (deviation), and a damper state for each of the four stages are displayed. And a movement button (not shown) for selecting the closing / opening / automatic opening / closing of the air damper 25, and the like, Is displayed. If you press the "Select" button after setting or selecting with each button, the setting or selection status is set.

Reference numeral 35 denotes a pedestal, reference numeral 36 denotes a wheel of the conveyance truck, reference numeral 37 denotes a frame of the conveyance truck 3, reference numeral 38 denotes a tray in which the object to be dried 2 is accommodated Reference numeral 39 denotes a supporting member for guiding and supporting the trays 38. Reference numeral 40 denotes a door hinge. Reference numeral 41 denotes a door handle. Reference numeral 42 denotes a viewing window installed on the door. Bb is the flue of the heat exchanger Ba and 25d is the supporting member of the air damper 25d.

FIG. 14 is a flowchart illustrating a method of drying agricultural products using an agricultural product dryer, which is illustrated in detail in one embodiment of the present invention. The drying method includes considering the type of dried agricultural product 2, drying temperature, drying time, drying time, (Step S1) of setting appropriate drying conditions such as the humidity control time (aging time, blowing delay time), the moisture treatment cycle (aging cycle), whether the electric heater 24 and the burner B are operated singly or in combination, A step S2 of sensing the temperature of the drying chamber 4 by the temperature sensor 20 and inputting the temperature to the controller 19 and a step S2 of setting the temperature of the drying chamber 4 inputted from the temperature sensor 20 to the controller 19, (Step S3) of comparing the set temperature with the preset temperature (step S3); if the current temperature (for example, 34 deg. C) of the drying chamber 4 is less than the set temperature Closing the damper 25 to circulate the air while heating and drying (S4), and the electric heater 20 is heated by the electric heater 20 until the current temperature of the drying chamber 4 inputted from the temperature sensor 20 coincides with the set temperature. If the current temperature and the set temperature coincide with each other (S5) The air damper 25 is opened in step S6 and the blower 23 is turned on for a predetermined period of time such as 2 minutes to turn off the agricultural product 2 in the drying process, The air blower 23 is stopped when the set time, for example, 2 minutes, is exceeded, and the air damper 30 is turned off when the humidity is raised by the moisture discharged from the air damper 30 The control unit 19 detects the temperature of the drying chamber 4 by the temperature sensor 20 until the dried product 2 is dried until the dried product 2 is dried, (Step S2) and continues to dry the agricultural product (2) until the dried product And the drying of the agricultural product 2 is completed (step S2).

FIG. 15 is a flow chart showing a method of drying agricultural products using an agricultural product drier according to another embodiment of the present invention. FIG. 15 is a flowchart illustrating a method of drying agricultural products using the agricultural product drier according to another embodiment of the present invention. (Step S11) of setting appropriate drying conditions such as the humidity control time (aging time, air blowing delay time), the moistening period (aging period), whether the electric heater 24 and the burner B are operated singly or in combination, A step S12 of sensing the temperature of the drying chamber 4 by the temperature sensor 20 and inputting the temperature of the drying chamber 4 to the controller 19, (Step S13) in which the set temperature is compared with the set temperature, and the electric heater 20 is turned ON when the present temperature (for example, 34 DEG C) of the drying chamber 4 is less than the set temperature The air damper 25 is closed, the air is circulated, the air is heated and dried Even if the temperature of the drying chamber 4 is raised by the heating of the electric heater 24 and the circulating air, the temperature difference between the current temperature of the drying chamber 4 and the set temperature of the controller 19 is 2 If the temperature difference between the current temperature and the set temperature exceeds 2 to 4 DEG C (step S15), the drying time is slowed down because the electric heater 24 is kept ON to warm the drying chamber 4 (Step S16) of increasing the heating speed of the drying chamber 4 by turning on the burner B in the ON state of the electric heater 24, When the temperature is lower than the set temperature but the temperature difference is maintained below 2 to 4 DEG C in step S17 and the burner B is turned OFF in step S18, If the current temperature and the set temperature of the drying chamber 4 inputted from the drying chamber 4 match (Step S19), the electric heater 24 is turned off and the air damper 25 is opened The air in the drying room 4 whose humidity has been raised by the moisture discharged from the agricultural product 2 during the drying process is discharged through the discharge port 30 (Step S23) of stopping the blower 23 and closing the air damper 25 (step S23) when the set time, for example, 2 minutes, is exceeded (step S22) The drying temperature of the drying chamber 4 is sensed by the temperature sensor 20 until the drying of the agricultural product 2 is completed by the controller 19 And the drying of the agricultural product 2 is completed (step S24).

The duration of the operation of the blower 23 in the aging mode of the present invention is 2 minutes, but it may be suitably adjusted depending on the state of the agricultural product 2, such as the characteristics of the agricultural product 2, the size and density and the drying amount Respectively.

The present invention properly sets and controls the ON / OFF (i.e., ON / OFF) width of the electric heater 24, which is one of the drying means, to appropriately dry and / or agate the agricultural product 2 such as persimmon (2) Since the proper temperature and humidity are maintained as the moisture in the agricultural product (2) is discharged out by appropriately controlling the ON / OFF time of the electric heater until the drying temperature is reached, Is superior in drying quality.

When the current temperature of the drying chamber (4) is lower than the set temperature set in the controller (19), the air damper (25) is heated and circulated to the inside air in a closed state to dry the agricultural product The humidity of the drying chamber 4 is increased by the moisture discharged from the agricultural product 2 so that the air damper 25 is automatically opened and is moistened through the drain port 30 so that the humidity of the drying chamber 4 is prevented Fungal generation is suppressed or prevented.

The present invention circulates heated air to the blower 23 when the electric heater 24 is ON and turns off the electric heater 24 when the current temperature reaches the set temperature, The operation (ON) and the opening of the air damper 25 are stopped and closed after being operated for the set time for moisturizing, thereby preventing overdrying and immobility of the agricultural product (2).

The present invention can also use the electric heater 24 and the burner B so that the electric heater 24 and the burner B are simultaneously operated at the initial stage where a large amount of heat is required, It can be raised quickly, and the two types of energy, electricity and oil, can be selectively used.

The present invention not only prevents the generation of fungi by maintaining an appropriate humidity, but also maintains the humidity of the drying room at a constant level, thereby uniformly aging and drying, and excessive deformation of the agricultural product (2) skin during the drying process is prevented.

In the case of drying dried persimmon which is one of the agricultural products (2), the humidity of the drying chamber (4) is increased due to the moisture discharged from the persimmon dust, and mold may be generated on the surface of the persimmon dust. Since the humidifying air is discharged through the pouring port while flowing into the drying chamber (4), temperature and humidity necessary for optimum aging of the perspex can be maintained, and moisturizing and moisturizing can be provided for a suitable amount of time, so that a high quality dried persimmon can be produced.

In other words, it is matured with the same color and texture as dried in dried persimmon vinegar, natural dehydration by proper moisturizing, moisturizing and drying, and insoluble tannin disappears, and the moisture content is kept at about 25 ~ 30% And the sugar content is very high, so you can get a dried persimmon which can be enjoyed by both sexes.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It is self-evident to those of ordinary skill.

(1) (1a) - Agricultural Product Drying System (2) - Agricultural Products
(3) - Transfer truck (4) - Drying room
(5) - upper surface member (6) - lower surface member
(7) -Side member (8) -Rear member
(9) -door (10) -circulating duct
(11) - Circulation path (12) - Suction hole
(13) - inlet hole (14) - guiding member
(15) - Discharge hole (19) - Controller
(20) - Temperature sensor (21) - Fan
(22) - Fan motor (23) - Blower
(24) - Electric heater (25) - Air damper
(25a) - intake tube (25b) - shaft
(25b) - damper (26) - opening / closing means
(27) - intake path (28) - intake duct
(29) - Intake air (30) - Vessel
(30a) - an insertion hole (31) - a guide
(32) -guide member (44) -isolation member
(B) - burner (Ba) - heat exchanger
(C) - control unit (S) - setting unit

Claims (4)

In constructing the agricultural product dryer;
A drying chamber (4) of a predetermined volume;
A top face member 5 and a bottom face member 6 and a side face member 7 and a rear face member 8 and a door 9 surrounding the drying chamber 4;
A circulation duct (10) installed on the upper surface member (5) and having a circulation path (11) formed therein;
A suction hole 12 formed at the center of the top surface member 5;
An inflow hole 13 formed on both sides of the top surface member 5;
A blower 23 installed above the suction hole 12;
A temperature sensor 20 installed in an upper space of the drying chamber 4;
An electric heater 24 installed around the blower 23;
A duct type induction member (14) vertically installed on an inner side surface of the side member (7) and connected to the inflow hole (13);
A plurality of discharge holes (15) formed at predetermined intervals in the guide member (14);
, ≪ / RTI &
An intake duct (28) provided outside the circulating duct (10) and having an intake passage (27) formed therein;
An air damper (25) installed at one side of the intake duct (28) and circulating outside air to the intake path (27);
Opening / closing means (26) for opening / closing the air damper (25);
An intake hole (29) connecting the intake path (27) and the drying chamber (4);
And is disposed directly under the suction hole 12 and guides the air in the drying chamber 4 to flow into the circulation path 11 through the suction hole 12 and flows through the opened air damper 25 and the intake path 27, A guide member 32 formed with a guide hole 31 for allowing air to flow into the circulation path 11;
A drain port 30 installed on one side of the drying chamber 4 so that a part of the moisture generated in the drying process can be discharged to the outside;
Further comprising: In constructing the agricultural product dryer;
A drying chamber (4) of a predetermined volume;
A drain port (30) installed on the drying chamber (4);
A circulation path (11) separated from the drying chamber (4) by a vertically installed isolation member (44);
A suction hole (12) formed on the upper portion of the isolator member (44);
An inflow hole 13 formed at a lower portion of the isolation member 44;
A blower 23 installed above the circulation path 11;
A temperature sensor 20 installed in an upper space of the drying chamber 4;
, ≪ / RTI &
An electric heater 24 installed under the blower 23;
A heat exchanger Bb installed under the electric heater 24;
A burner B connected to the heat exchanger Bb and under the control of the controller;
An air damper 25 and an air damper opening / closing means 26 installed above the circulation path 11;
Further comprising:
The air damper 25 is provided with a damper 25c which is opened and closed by the opening / closing means 26,
The damper 25c opens the air intake hole 29 formed in the upper part of the circulation path 11 during the aging period so that the air is exhausted. During the drying period, the air intake hole 29 is closed, And the agricultural product (2) is dried while circulating to the drying chamber (4). A method for drying agricultural products using an agricultural product dryer;
A. feeding agricultural products into a drying chamber;
B. heating the air with a temperature controlled electric heater;
C. heating and drying the agricultural product while forcibly circulating the heated air to the drying chamber using a blower; , ≪ / RTI &
D. stopping the electric heater and introducing outside air into the drying chamber for a predetermined time by using a blower, and moistening the humidified air of the drying room externally by moisture discharged from the agricultural product to agitate and dry the agricultural product;
E. repeating the above heat drying and aging drying to complete the drying of agricultural products;
And drying the agricultural product using the dryer. A method for drying agricultural products using an agricultural product dryer;
H. feeding the dried agricultural product to the drying chamber;
I. heating air with a temperature controlled electric heater and a burner;
J. heating and drying the agricultural products while forcibly circulating the heated air to the drying chamber using a blower; , ≪ / RTI &
K. heating and drying the agricultural product while stopping the burner and precisely controlling the temperature with an electric heater;
L. The step of aging and drying the agricultural products by stopping the electric heater and introducing the outside air into the drying chamber for a predetermined time while moisturizing the air in the drying chamber to outside;
M. repeating the above-mentioned heat drying and aging drying to complete the drying of agricultural products;
And drying the agricultural product using the dryer.

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