KR20190009500A - Drying System - Google Patents

Abstract

The present invention relates to a drying system. More specifically, the drying system is nature friendly, can minimize apparatus and maintenance costs and destruction of food nutrients, and can rapidly dry various agricultural products, marine products (dried fishes), dried fruits, herbal medicine, jerky and the like by compositely using solar heating and drying with sunlight, cooling and dehumidification with underground water, cooling and dehumidification with a heat pump, heating and drying with a heat pump, and the like. The drying system of the present invention includes: a transparent housing (10) in which a drying chamber (13) is formed in an internal space blocked from external air, and which enables sunlight to be transmitted into the drying chamber (13); a blowing means (20) which is provided at one side of the drying chamber and sucks air of the drying chamber; a first dehumidification unit which cools air sucked from the blowing means by including a plurality of underground water circulation pipes (30) having underground water circulated therethrough; a second dehumidification unit which cools air passing through the first dehumidification unit by including an evaporator (40) of the heat pump; a condensing unit which heats air passing through the second dehumidification unit by including a condenser (60) of the heat pump; and an exhaust port (14) which exhausts the air heated in the condensing unit to the drying chamber.

Description

[0001] Drying System [0002]

The present invention relates to a drying system, and more particularly, to a method of drying a solar cell, which comprises the steps of: (1) heat drying using sunlight, (2) cooling and dehumidifying using ground water, (3) cooling and dehumidifying using heat pump, And to a drying system for minimizing maintenance costs and allowing quick drying.

Generally, the methods of drying agricultural products, fishes (dried fish), etc. can be broadly classified into a heat drying method and a freeze drying method, and the heat drying method can be further classified into a sun drying method, a hot air drying method and a hot plate drying method.

One of the heat drying methods, sun drying, is a traditional method of drying using sunlight and natural wind. It does not require a separate installation cost and is inexpensive. However, drying time is long and hygienic treatment is difficult. There is a fear that the quality is deteriorated.

In addition, a heating plate drying method (see Patent Document 2, for example) in which a hot air drying method using hot air (see Patent Document 1, for example) and a heated hot plate are directly contacted is an apparatus for drying in an artificial manner, It is possible to dry quickly, hygienic treatment is possible, and it is possible to prevent quality deterioration due to microorganisms. However, since the apparatus cost is high, the problem of nutrient destruction of food by high temperature treatment, There is a problem such that it takes a lot of cost to manage it.

On the other hand, the freeze-drying method (see Patent Document 3, for example) includes a contact freeze-drier, an accelerated freeze-drier, a radiative freeze-drier and the like. And it is possible to minimize the migration of solute in food, but it requires expensive equipments for freezing and vacuum, has a long drying time, has an excessive drying cost until drying, There is a drawback that it is easy.

1. Korean Utility Model Registration No. 20-0415334 (2006.5.2 notice) 2. Korean Patent Application No. 10-2009-0132156 (disclosed on December 30, 2009) 3. Korean Registered Patent No. 10-1340151 (issued on January 17, 2014)

In order to solve the problems of the prior art, the present invention is applied to a combination of solar heat drying using sunlight, cooling and dehumidifying using ground water, cooling dehumidification using heat pump, and heat drying It provides a drying system that is environmentally friendly, minimizes equipment cost, maintenance cost, and destruction of food nutrients, and also enables rapid drying of various agricultural products, fish (dried fish), dried fruit, herbal medicine and jerky It has its purpose.

According to an aspect of the present invention,

A transparent housing which forms a drying chamber in an inner space blocked by outside air and allows sunlight to pass through the drying chamber;

A blowing means provided at one side of the drying chamber and sucking air in the drying chamber;

A first dehumidifier for cooling air sucked from the blowing means by providing a plurality of groundwater circulation pipes through which groundwater is circulated;

A second dehumidifier for cooling the air passed through the first dehumidifier by the evaporator of the heat pump;

A condenser for heating the air passed through the second dehumidifying part by having a condenser of a heat pump;

An exhaust port for exhausting the air heated by the condenser to the drying chamber; And a control unit.

According to the drying system of the present invention, by applying a combination of methods such as solar heat drying using sunlight, cooling and dehumidifying using ground water, cooling dehumidification using heat pump, and heat drying, The temperature can be easily controlled and the electricity consumption can be minimized, so that the drying cost and the maintenance cost can be reduced. Therefore, it is economical and minimizes the deterioration in quality caused during drying, and can be dried quickly.

More specifically, since the drying system of the present invention uses sunlight as a basic heat source and requires little heating energy and also performs primary dehumidification using ground water, the operation time and frequency of use of the heat pump The cooling energy can be saved.

In addition, when the far-infrared radiation paint is applied, a large amount of far-infrared rays are emitted by the sunlight to directly heat the moisture in the inside of the to-be-dried object to evaporate moisture in the inside of the to- It is possible to suppress the corruption of the environment and to establish a closed type drying room which is blocked from the outside, so that the energy efficiency is high and it is not influenced by the climate change.

Furthermore, since the heat of the condenser is recovered by the second cooled air by the evaporator of the heat pump after the first cooling by the ground water circulation pipe, the energy efficiency of the heat pump can be increased.

Accordingly, it is a very useful invention that can efficiently dry various foods such as various agricultural products, fish (dried fish), dried fruits, herb medicine, and jerky at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the structure of a drying system and the flow of air according to the present invention. FIG.
2 is a top view and a side view of a filter element of a drying system according to the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It is to be understood, however, that the intention is not to limit the invention to the embodiments illustrated, but on the contrary, the intention and scope of the invention encompass conventional variations and equivalents of the illustrated forms.

In addition, throughout the specification, it is to be understood that a portion is referred to as being "directly connected" to another portion, or "indirectly connected" to any element, Means that other elements may be added, without excluding other elements, unless otherwise stated.

FIG. 1 is a structural view showing a construction of a drying system and a flow state of air according to the present invention, and FIG. 2 is a plan view (a) and a side view (b) of a filter member of a drying system according to the present invention.

1, the drying system of the present invention includes a transparent housing 10, a blowing means 20, an underground water circulation pipe 30, an evaporator 40 of a heat pump, the auxiliary heater 70, and the light shielding film 80. The condenser 60 may be provided with a filter member 50, a supplementary heater 70, and a light shielding film 80 as needed.

The transparent housing 10 may be made of transparent glass or transparent plastic that allows sunlight to be transmitted through the drying chamber 13 to the outside of the transparent housing 10, have.

The transparent housing 10 may be formed of a double wall having an outer wall 11 and an inner wall 12 spaced from each other by a predetermined distance. In this case, an airtight space is formed between the outer wall 11 and the inner wall 12, (S) can be formed, so that the barrier property between the drying chamber 13 and the outside air and the warming property can be enhanced. The gap between the outer wall 11 and the inner wall 12 is not limited, but may be 150 to 180 mm in order to maximize the insulation effect without causing a convection phenomenon.

The outer wall 11 is made of flat glass or flat plastic to allow sunlight to penetrate without scattering while the inner wall 12 forms an uneven surface on the surface in order to scatter sunlight, Scattering and diffusing.

The sunlight transmitted by the transparent inner wall 12 is scattered by the irregular surface and diffused in the drying chamber 13, so that it is possible to prevent the direct sunlight from being directly irradiated to the drying object. Therefore, And deformation of the shape can be prevented.

A part of the inner surface of the transparent housing 10 may be coated with a far infrared ray emitting paint layer 15 for converting visible light of the sunlight into far infrared rays and when the transparent housing 10 is made of a double wall as described above The far-infrared radiation paint layer 15 is formed on a part of the inner wall 12.

The far-infrared ray road layer 15 may be, for example, loess paint, charcoal paint, etc. traded on the market. When the far-infrared ray is irradiated on the workpiece, the moisture in the workpiece is directly heated and evaporated, And the surface damage of the workpiece can be reduced.

The air blowing means 20 is provided at one side of the drying chamber 13, preferably at the upper side thereof, for sucking air in the drying chamber 13. In order to smoothly evaporate water in the drying chamber 13, The means 20 preferably reduces the pressure in the drying chamber 13 to a level lower than the cooling chamber (the duct in which the groundwater circulation pipe 30, the evaporator 40, the condenser 60, etc. are installed) by applying a pressure reducing pump.

The first dehumidifying unit is provided with a plurality of groundwater circulation pipes (30) through which groundwater having a low temperature is circulated, thereby cooling water in the air sucked from the air blowing means (20) to be converted into water. At this time, a first condensed water collecting part 31 for collecting condensed water may be provided below the groundwater circulation pipe 30, and the condensed water collected in the first condensed water collecting part 31 may be discharged to the outside.

The second dehumidifying unit is provided with an evaporator 40, which is one of heat pumps, to cool and convert the residual moisture in the air transferred from the first dehumidifying unit.

The heat pump circulates the refrigerant in the order of the compressor, the condenser, the expansion valve and the evaporator, thereby cooling the ambient air of the evaporator and heating the ambient air of the condenser, which is widely used in various technical fields The detailed description thereof will be omitted.

A second condensed water collecting part 41 for collecting condensed water may be provided below the evaporator 40 and condensed water collected in the second condensed water collecting part 41 may be discharged to the outside.

The condenser is provided with a heat pump condenser 60 to heat the air transferred from the second dehumidifier to raise the temperature of the condenser 60. The evaporator 40 and the condenser 60 are arranged in a single row And may be a component of a heat pump.

Thus, the air heated in the condensing portion flows into the drying chamber 13 through the exhaust port 14 provided at one side, preferably the lower side, of the drying chamber 13 to dry the agricultural product.

As a preferred embodiment, a filter member 50 for removing foreign substances in the air may be provided between the evaporator 40 and the condenser 60. More preferably, the filter member 50 may include a salt filter Lt; / RTI >

As shown in FIG. 2, the salt filter may have a shape in which a plurality of salt pills filled with dried salt 52 are arranged at predetermined intervals in the mesh-shaped column 52.

In this way, the steam of the saturated air transferred via the evaporator 40 can be dehumidified by reacting with the salt of the salt filter to dissolve the salt. Thus, the brine in which the water and the salt are combined falls down And is collected in the brine collection part 51. At this time, the brine collected in the brine storage part 51 may be discharged to the outside, dried and evaporated, and the obtained salt may be recycled again.

The auxiliary heater 70 is disposed between the condenser 60 and the exhaust port 14 to raise the temperature of the air heated by the condenser 60 to a higher temperature as required. pump, or an electric heater may be applied.

On the other hand, a light shielding film 80 for selectively shielding sunlight may be provided on the outer side of the transparent housing 10. That is, when the inside temperature of the drying chamber 13 is higher than the set temperature, the light shielding film 80 is used to reduce the amount of sunlight transmitted through the inside of the drying chamber 13 to prevent overheat in the drying chamber 13 can do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It will not.

10 ... transparent housing 11 ... outer wall
12 ... inner wall 13 ... drying room
14 ... exhaust port 15 ... outermost emission paint layer
20 ... blowing means
30 ... groundwater circulation pipe 31 ... first condensed water collecting part
40 ... evaporator 41 ... second condensed water collecting part
50 ... Filter member 51 ... Brine reservoir
60 ... condenser
70 ... auxiliary heater
80 ... shielding film

Claims (10)

As a drying system,
A transparent housing which forms a drying chamber in an inner space blocked by outside air and allows sunlight to pass through the drying chamber;
A blowing means provided at one side of the drying chamber and sucking air in the drying chamber;
A first dehumidifier for cooling water in the air sucked from the blowing means by providing a plurality of groundwater circulation pipes through which groundwater is circulated;
A second dehumidifier for cooling the moisture in the air passed through the first dehumidifier by the evaporator of the heat pump;
A condenser for heating the air passed through the second dehumidifying part by having a condenser of a heat pump;
An exhaust port for exhausting the air heated by the condenser to the drying chamber; ≪ / RTI > The method according to claim 1,
Wherein the transparent housing is a double wall having an outer wall and an inner wall spaced apart from each other by a predetermined distance so as to prevent heat insulation and convection, and a space between the outer wall and the inner wall is shielded from outside air. The method of claim 2,
Wherein the inner wall is formed with an uneven surface for scattering sunlight, thereby preventing exposure of the drying object to direct sunlight. The method according to claim 1,
And a far infrared ray-emitting paint layer for emitting far-infrared rays to the drying room by sunlight is applied to a part of the inner wall of the transparent housing. The method according to claim 1,
Wherein the blowing means is a pressure reducing pump for lowering the pressure in the drying chamber than the cooling chamber. The method according to claim 1,
Wherein the condensing water collecting unit collects condensed condensed water on each surface of the groundwater circulation pipe and the evaporator, and stores the collected condensed water in the lower part of each of the first dehumidifying unit and the second dehumidifying unit. The method according to claim 1,
And a filter member for removing foreign substances in the air between the evaporator and the condenser. The method of claim 7,
Wherein the filter member is a salt filter that is capable of forming salt water by absorbing water vapor of the saturated air transferred via the evaporator. The method according to claim 1,
And an auxiliary heater for raising the temperature of the air heated by the condenser is provided between the condenser and the exhaust port. The method according to claim 1,
And a light shielding film for selectively shielding sunlight is provided on the outer side of the transparent housing.

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