KR20180067069A - food drying equipment using cool and hot air - Google Patents

Abstract

The present invention relates to a dehumidifying dryer using cool and hot air which can alternately perform cool air drying, hot air drying, or cool/hot air drying in accordance with the type of an object to be dried, and be used as low temperature storage when needed without being limited to dryer use. A cart with an object to be dried positioned on a tray enters a chamber to dry water lower the water content of the object to be dried by driving a heater and a dehumidifier. The chamber includes a drying space where the cart with the loaded tray enters to be dried, a rear space is formed by a partition behind the drying space, and an upper space is formed by a ceiling wall above the drying space. A circulation fan is installed between the drying space and the rear space to circulate dry air. An upper portion of the rear space and the rear of the upper space are connected. A front of the upper space and an upper portion of a front of the drying space are connected. A variable damper is installed to adjust the direction of air supplied from the upper space to the drying space. A dehumidifying unit including a dehumidifying coil, a condensing coil, a blower, and an auxiliary heater are installed in the upper space. The dehumidifying unit and outdoor unit are connected by a refrigerant line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying /

The present invention is used to dry various agricultural and marine products. More specifically, it is possible to carry out cold air dehumidification drying, hot air dehumidification drying or cold / warm air temperature dehumidification drying alternately depending on the type of the drying object. The present invention relates to a dehumidifying and drying dehumidifier for dehumidifying air.

The agricultural products such as ginseng, bellflower, celadon, hwanggi, and hwanggi, and various kinds of herbs and red pepper are required to be dried for improving the efficacy or for improving the flavor or for long-term storage. For natural drying such as daylight drying or shade drying, And a considerable spatial space and a lot of labor are required. In addition, there is a possibility that contamination due to foreign substances such as various dusts may occur during the drying process.

Meanwhile, these herbs and agricultural products are dried using a dryer for artificial drying. However, the conventional agricultural dryer has a problem that excessive fuel and electric power are wasted compared to the drying performance, and the structure of the equipment is complicated and large, And there is a problem in that it is difficult to produce high quality herb or dried agricultural products if the operation management or the know-how of the facility is not possessed.

On the other hand, in the rotary drum type agricultural produce dryer of Patent Document 1, since agricultural products are flowed and dried through the rotary drum, there is an advantage in that the position of the tray is not changed by hand, but there is a limit in the drying capacity of the dryer, The process of feeding and discharging agricultural products becomes cumbersome.

In the low temperature cold air dehumidification type pepper drying apparatus of Patent Document 2, heat recovery is minimized by minimizing heat loss, but heat efficiency is improved. However, the structure of the heat pump type air conditioner is complicated, So that it is a cause of generation of noise and dust in the room and the sanitary property is deteriorated.

The low temperature storage device of Patent Document 3 has a structure in which the storage room and the air conditioner room are detachably coupled, so that the air conditioner room having the refrigeration cycle can be separated from the storage room and connected to other devices or devices.

In the dryer using the refrigeration cycle of Patent Document 4, the cooler for condensing water in the dryer and the evaporator constituting the heat pump are separated from each other in the circulation cycle of the refrigerant, and the object is dried using the heat pump condensation heat, So that the drying efficiency can be improved by removing the moisture generated in the drying process.

Korean Patent No. 10-1137774 " Rotary drum type agricultural product dryer " Korean Patent Laid-Open No. 10-2013-0019881 " Low temperature cold air dehumidifying method pepper drying apparatus & Korean Patent No. 10-1302249 " Low temperature storage device " Korean Patent No. 10-1536819 " Dryer using refrigeration cycle "

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a drying machine which can maintain a clean and clean structure suitable for HACCP, And to provide a dryer capable of facilitating the maintenance of the facility.

Second, the present invention is to provide a dryer capable of producing energy-saving and high-quality dry agricultural products by using high efficiency heat energy at low operating cost by applying a heat pump principle of a refrigerator.

Third, it is an object of the present invention to provide a multi-purpose dryer capable of performing hot air drying, hot air drying, cold air drying, and cold storage when not used as a dryer.

According to an aspect of the present invention, there is provided a drier for drying moisture of a laundry,

Wherein the chamber comprises a drying space in which a tray loaded with trays is loaded and dried, a rear space formed as a partition wall behind the drying space, and an upper space formed as a ceiling wall at an upper portion of the drying space;

A circulation fan for circulating dry air is installed between the drying space and the rear space,

A variable damper for adjusting the direction of the air supplied from the upper space to the drying space is installed in the upper part of the rear space and the rear part of the upper space and is communicated with the front part of the upper space and the upper part of the drying space,

The upper space is provided with a dehumidifying unit including a dehumidifying coil, a hot air drying heating coil, an air blower and an auxiliary heater. The dehumidifying unit provides a cold air dehumidifying dryer connected to an outdoor unit.

In the present invention, the outdoor unit includes a compressor and an outdoor condensing coil, and the outdoor condensation coil side is provided with a cold / hot air switching three-way valve. By switching the hot / cold air switching three- So that the hot air dehumidification drying and the cold air dehumidification drying can be selected.

According to the present invention, an air supply damper and an air discharge damper for discharging humid air from the inside are installed in the upper part of the dryer, and the air supply and exhaust damper is opened and closed by a motor.

The air supply damper is provided with a filter for keeping cleanliness and the exhaust damper is provided with a discharge blower for discharging the humidifier in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing a configuration of a cold air dehumidifying and drying dryer according to an embodiment of the present invention,
2 is a plan view showing a configuration of a cold air dehumidifying and drying dryer according to an embodiment of the present invention,
3 is a plan view of a dryer according to another embodiment of the present invention, in which the door for carrying in and carrying out is changed to one,
4 is a plan view of a cold air dehumidifying and drying dryer according to another embodiment of the present invention,
5 is a circuit diagram showing a connection state of a dehumidifying unit and an outdoor unit of a dryer according to the present invention,
6 is a refrigerant flow chart during dehumidification and drying of warm air.
7 is a flowchart showing a refrigerant flow in a cold air dehumidification drying process,
8 is a flowchart of the refrigerant flow during the cold and hot weather dehumidification and drying,
9 is a refrigerant flow chart during low-temperature storage.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show the overall structure of the cold air dehumidifying and drying dryer 1 according to the first embodiment of the present invention.

As shown in the drawing, the dryer 1 according to the present embodiment is configured to dry the moisture of the drying object by loading the laundry C in the chamber with the laundry being placed on the drum T,

The chamber includes a drying space 100 in which a tray C loaded with a teaspoon T is loaded and dried, a rear space 120 formed as a partition 110 at the rear of the drying space 100, And an upper space 140 formed as a ceiling barrier 130 on the upper part of the upper wall 100,

A circulation fan 200 for circulating dry air is installed in the partition 110 between the drying space 100 and the rear space 120,

The front space of the rear space 120 communicates with the rear space of the upper space 140. The front space of the upper space 140 and the front space of the drying space 100 communicate with each other, A variable damper 300 for adjusting the direction of the air supplied to the drying space 100 is installed in the drying space 100. In addition to the variable damper 300, A direction adjusting plate 310 is provided,

A guard rail 170 is installed in the drying space 100 for the smooth movement of the carriage C and the guard rail 170 prevents the carriage C from being moved in and out of the carriage C, (100) so that the drying space (100)

A cold air dehumidifying unit 500 including a dehumidifying coil 510, a hot air drying heating coil 520 (indoor condenser coil), a blower 530 and an auxiliary heater 540 is installed in the upper space 140, The air desiccant unit 500 is connected to the outdoor unit 600 installed outside the building and connected to the refrigerant line.

An exhaust damper 150 and a discharge blower 152 are installed on a front upper roof of the upper space 140. A supply damper 160 and a filter 162 are installed on a rear upper roof of the upper space 140 Is installed.

In the present embodiment, the door 180 for loading and unloading the bogie C is installed on the left and right sides of the drying space 100, so that it is possible to quickly carry out the goods receipt and the goods quickly. When the door of the other side is used only for goods leaving, when a lot of bogies are waiting in a row, when the drying is finished, the door for exclusive use of the goods is opened, and the bogie with the drying is opened and the door on the opposite side is opened, By sequentially wearing the bogies, the bogie of the bogie can be made the shortest distance, so that the efficiency of the work can be improved.

In the present embodiment, the door 180 is installed in both the left and right sides of the drying space 100. However, the present invention is not limited to this, It may be provided in front of the main body 100.

In the present embodiment, the capacity of the dryer is shown to be capable of accommodating two to four bogies. However, the present invention is not limited to this, and as shown in FIG. 4, It is of course possible to dry the clothes by collecting the bins at once.

In the figure, C denotes a control box, and S denotes a sensor for detecting the temperature and humidity inside the dryer.

In the present embodiment, the air direction regulating plate 310 is for uniformly supplying air to the goblets T stacked on each end of the carriage C, The flaps are arranged in a multistage manner so that the air can be supplied toward the trays T of the respective stages and serve as a kind of cascade, (T) from the respective flaps.

5 shows a refrigerant line (indicated by a solid line and a flow of a refrigerant) between a cold air dehumidifying unit 500 installed in the upper space 140 of the chamber 1 of the dryer 1 and a dehumidifying and drying unit 600 separately installed outdoors in the embodiment of the present invention. Are indicated by arrows).

In the present embodiment, since the outdoor unit 600 is separately installed in the cold / warm air dehumidifying unit 500, the dryer installed in the room can be kept quiet and clean, thereby facilitating the management of the dryer.

In the drawings, reference numerals 550 and 560 denote solenoid valves and swing valves, respectively. Reference numeral 610 denotes a refrigerant line liquid separator, 620 denotes a compressor, 630 denotes a high-pressure oil separator, 640 denotes a receiver, 650 denotes an outdoor condenser coil, Three-way valves, and 670 and 680 are hot-air refrigerant line check valves and cold-air refrigerant line check valves, respectively.

Reference numerals 622, 624, and 626 denote high and low pressure regulating switches, high pressure regulating switches, and oil pressure switches, respectively.

The concrete configuration and operation of the outdoor unit 600 are the same as those of the compressor and the condenser of the refrigeration cycle, and thus a detailed description thereof will be omitted.

The dehumidifying unit 500 is connected to the outdoor unit 600 through a refrigerant line (solid line in the figure), and the outdoor unit 600 includes a compressor 620 and an outdoor condensing coil 650, A cold / wind switching three-way valve 660 is provided on the side of the condensing coil 650. By switching the cold / hot air switching three-way valve 660, refrigerant is selectively supplied to the hot air drying heating coil and the outdoor condensing coil, Cold air dehumidification drying is selected.

In the dryer of this embodiment configured as described above, the drying space 100, the rear space 120, and the upper space 140 are communicated with each other to circulate air continuously to dry the laundry in the drying space 100, 6, the cold / wind switching three-way valve 660 is opened to the warm air refrigerant system and is connected to the compressor 620, the hot air drying heating coil 520, the expansion valve 560, and the dehumidifying coil 510 The hot air drying heating coil 520 of the cold air dehumidifying unit 500 acts as a kind of condenser to generate condensation heat and the dehumidifying coil 510 acts like an evaporator, Dehumidification drying is performed.

During the dehumidification and dehumidification of the hot air, the circulating air joins with the heat of the auxiliary heater 540 while taking the moisture of the object to be dried, flows into the upper space 140 through the rear space 120 of the circulation fan 200, 500 is dehumidified by the dehumidifying coil 510 and then cooled by the heating coil 520. The heated air is heated again by the hot air drying heating coil 520 to be re-introduced into the drying space 100 in a dry hot air state and continuously circulated, And drying is performed while maintaining the same taste, flavor, color and nutrition.

Meanwhile, when the wind from the upper space 140 flows into the drying space 100, the variable damper 300 rotates at a predetermined angle to continuously change the direction of the wind toward the lower portion and the upper portion of the truck, The drying air is uniformly dried by the air direction regulating plate 310 in addition to the variable damper 300. At this time, the dry air is fed to the tray T So as to smoothly supply the fluid.

7, the cold / wind switching three-way valve 660 is opened to the cool air refrigerant system so that no refrigerant is supplied to the hot air drying heating coil 520 of the cold air dehumidifying unit 500, The refrigerant is supplied only to the cooling and dehumidifying coil 510 while the compressor 620, the outdoor condenser coil 650, the expansion valve 560 and the dehumidifying coil 510 form a refrigeration cycle so that only the cold air is supplied to the drying space 100 And dehumidifying and drying by cold air is performed.

The auxiliary heater 540 does not operate during the above-described cold air dehumidification and drying.

As shown in Fig. 6 and Fig. 7, the hot air dehumidifying drying mode and the cold air dehumidifying mode are switched alternately at predetermined time intervals, as shown in Fig. 8, The drying mode is repeated.

Finally, when the drying space 120 is to be used as a low temperature reservoir, two solenoid valves 550 and 550 'and two expansion valves 560 and 560' are provided at the front end of the dehumidifying coil 510, Temperature drying expansion valve 560 'instead of the dehumidifying expansion valve 560 by operating the solenoid-operated valves 550 and 550' in parallel and selectively interrupting the solenoid valves 550 and 550 ' ° C to a temperature suitable for dehumidification and then switched to -5 ° C to -15 ° C suitable for lowering the room temperature during low temperature storage.

1: dryer
100: Dry space
110:
120: rear space
130: Ceiling wall
140: Upper space
150: exhaust damper
152: discharge blower
160: intake damper
162: Filter
170: Guard rail
180: Door
200: Circulation fan
300: Variable damper
310: air direction control plate
500: dehumidifying unit
510: Dehumidifying coil
520: Hot air drying heating coil (Indoor condensation coil)
530: blower
540: auxiliary heater
550,550 ': Solenoid valve
560: Expansion valve (for dehumidification)
560 ': Expansion valve (for low temperature storage)
600: outdoor unit
610: Refrigerant line liquid separator
620: Compressor
622: High and low pressure regulating switch
624: High pressure control switch
626: Oil pressure switch
630: High pressure oil separator
640: Receiver
650: outdoor condensing coil
660: Three-way valve for switching between cold and hot wind
670,680: Check valve
C: Control box
S: Sensor (temperature / humidity)

Claims (6)

A bogie bearing the dried body on the tray is put into the chamber, and the moisture of the dried body is dried by driving the heater, the fan and the dehumidifier,
Wherein the chamber comprises a drying space in which a tray loaded with trays is loaded and dried, a rear space formed as a partition wall behind the drying space, and an upper space formed as a ceiling wall at an upper portion of the drying space,
A circulation fan for circulating dry air is installed between the drying space and the rear space,
A variable damper for adjusting the direction of the air supplied from the upper space to the drying space is installed in the upper part of the rear space and the rear part of the upper space is communicated with the front part of the upper space and the upper part of the drying space,
The dehumidifying unit includes an outdoor unit and a refrigerant line. The outdoor unit includes a compressor and an outdoor condenser coil. The outdoor unit includes a compressor and an outdoor condenser coil. The outdoor unit includes a compressor and an outdoor condenser coil. And the outdoor condensation coil side is provided with a cold / hot air switching three-way valve. By switching the cold / hot air switching three-way valve, refrigerant is selectively supplied to the hot air drying heating coil and the outdoor condenser coil to select hot air dehumidification drying and cold air dehumidification drying Wherein the dehumidifying / dehumidifying device is a dehumidifying / drying device.
The method according to claim 1,
Wherein an exhaust damper is installed on a front upper roof of the upper space, a supply damper is installed on a rear upper roof of the upper space, a discharge blower is installed in the exhaust damper, and a filter is installed in the supply damper Dehumidifier dryer.
The method according to claim 1,
Wherein an air direction regulating plate is installed at a lower portion of the variable damper so as to smoothly circulate dry air between the trays.
The method according to claim 1,
Wherein a door for loading and unloading a bogie is installed on left and right sides of the drying space, respectively.
The method according to claim 1,
Wherein a door for loading and unloading a bogie is installed in front of the drying space.
The method according to claim 1,
A dehumidifying expansion valve and a low temperature storage expansion valve are connected in parallel to the front end of the dehumidifying coil of the dehumidifying unit and the electromagnetic valve provided at the front end of each expansion valve is selectively interrupted to enable switching to a low temperature storage Wherein the dehumidifying / dehumidifying device is a dehumidifying / drying device.

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