KR19980025296A - Freeze Drying System - Google Patents
Freeze Drying System Download PDFInfo
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- KR19980025296A KR19980025296A KR1019980012737A KR19980012737A KR19980025296A KR 19980025296 A KR19980025296 A KR 19980025296A KR 1019980012737 A KR1019980012737 A KR 1019980012737A KR 19980012737 A KR19980012737 A KR 19980012737A KR 19980025296 A KR19980025296 A KR 19980025296A
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- heat exchanger
- air
- cooling
- reheat
- rotary
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
Abstract
냉풍건조시스템의 건조효율을 증대시킬 수 있고, 냉동시스템의 부하를 줄일 수 있는 냉풍건조시스템을 제공하기 위하여, 본 발명은 증발기 전후에 로터리식 교환기를 설치하여 증발기 즉, 냉각장치의 용량을 감소시키고, 냉각장치의 폐열을 이용한 재열용 열교환기를 이용하여 급기의 온도를 상승시키고, 고정식 현열교환기를 설치하여 외기와 배기를 통한 열교환으로 중간기, 동기에 저습의 외기를 이용하여 냉각장치의 운전부하를 감소시키게 된다.In order to provide a cold air drying system that can increase the drying efficiency of the cold air drying system and reduce the load of the refrigeration system, the present invention provides a rotary exchanger before and after the evaporator to reduce the capacity of the evaporator, that is, the cooling device. Increasing the temperature of the air supply using a reheat heat exchanger using waste heat from the cooling system, and installing a fixed sensible heat exchanger to reduce the operating load of the cooling system by using low-humid outdoor air in the middle and synchronous periods through heat exchange with outside air and exhaust. Let's go.
Description
본 발명은 건조시스템에 관한 것으로, 보다 상세하게는 벼, 고추, 무, 양파 등의 농산물, 혹은 당면 등과 같은 가공식품이나 멸치와 같은 수산 물 등 여러 가지 재료를 건조시켜주기 위한 건조시스템에 관한 것이다.The present invention relates to a drying system, and more particularly, to a drying system for drying a variety of materials, such as agricultural products such as rice, red pepper, radish, onion, or processed foods such as vermicelli or fish such as anchovy .
특히, 본 발명은 빠른 건조시간과 피건조물의 박테리아수를 감소시키고, 에너지 소비량을 감소시킬 수 있는 건조시스템에 관한 것이다.In particular, the present invention relates to a drying system that can reduce the fast drying time, the number of bacteria in the dry matter, and reduce the energy consumption.
건조시스템에는 열풍건조기타입과, 냉풍건조기 타입이 있으나, 열풍건조기는 버너 등에 의해 가열된 공기를 송풍기를 통하여 건조실의 피건조물을 건조시키는 타입으로 고온으로 인하여 피건조물이 변색되는 등 오염이나 손상의 우려가 있다.There are hot air dryer type and cold air dryer type in the drying system, but hot air dryer is a type that dries dry items in the drying room by blowing air heated by a burner and the like. There is.
한편, 냉풍건조시스템은 냉동기가 공기중의 습기를 제습건조하는 능력이 탁월한 것을 이용하여 건조실내의 공기를 흡입하여 냉각제습건조하고 이 건조공기를 전기히이터 또는 응축기(condenser) 등으로 적절하게 상승시킨 후 건조실내로 되돌려 건조시키는 시스템이고, 수분만을 증발시키므로 건조효율이 열풍건조시스템에 비하여 월등히 우수하지만, 종래에는 이러한 냉풍건조시스템에 적용되는 냉동시스템 등으로 인하여 제조가격이 비싸고 또한 유지비가 높아 잘 활용되고 있지 못하고 있는 실정이다.On the other hand, the cold air drying system utilizes the excellent ability of the freezer to dehumidify and dry the moisture in the air, so that the air in the drying chamber is sucked and dried by cooling and dehumidifying, and the air is properly raised by an electric heater or a condenser. It is a system for drying after returning to the drying room and drying efficiency is much better than the hot air drying system because only water is evaporated, but in the past, due to the refrigeration system applied to such a cold air drying system, the manufacturing price is high and the maintenance cost is well utilized. It is not happening.
한편, 종래의 냉풍건조시스템은 건조실을 통과한 고온공기가 그대로 증발기(evaporator)를 통과하므로 증발기가 고온화되고 압축기가 과부하가되어 냉동기 전체가 전력만 소비하고 냉동효율이 떨어지는 결과를 가져오게 되는 문제점이 있다.On the other hand, in the conventional cold air drying system, since the high temperature air passing through the drying chamber passes through the evaporator as it is, the evaporator becomes hot and the compressor is overloaded so that the entire refrigerator consumes only power and the refrigeration efficiency is reduced. have.
따라서 이 발명의 목적은 냉풍건조시스템의 건조효율을 증대시킬 수 있고, 냉동시스템의 부하를 줄일 수 있는 냉풍건조시스템을 제공하는 것이다.Therefore, an object of the present invention is to provide a cold air drying system that can increase the drying efficiency of the cold air drying system and reduce the load of the refrigeration system.
기타 목적과 장점들은 다음의 상세한 설명과 첨부된 청구범위로부터 명백해질 것이다.Other objects and advantages will be apparent from the following detailed description and the appended claims.
도 1은 본발명에 따른 냉동건조시스템의 개략블록도이다.1 is a schematic block diagram of a freeze drying system according to the present invention.
도 2는 본 발명에 따른 냉동건조시스템의 냉각시스템을 도시한 개략블록도이다.2 is a schematic block diagram showing a cooling system of the freeze drying system according to the present invention.
*도면의 주요부분에 대한 부호의 간단한 설명** Brief description of symbols for the main parts of the drawings *
1: 압축기 3: 3방향밸브1: compressor 3: 3-way valve
5: 고정형 현열교환기 6: 급기통로5: Fixed type heat exchanger 6: Supply passage
12: 회전형 교환기12: rotary exchanger
13: 냉각용 열교환기13: Cooling heat exchanger
14: 냉각용 공조기14: cooling air conditioner
17: 재열용 열교환기17: Heat exchanger for reheat
25: 응축용 열교환기25: heat exchanger for condensation
상기 목적을 달성하기 위하여, 본 발명의 구성을 대략 설명하면, 증발기 전후에 로터리식 열교환기를 설치하여 증발기 즉, 냉각장치의 용량을 감소시키고, 냉각장치의 폐열을 이용한 재열용 열교환기를 이용하여 급기의 온도를 상승시키고, 고정식 현열교환기를 설치하여 외기와 배기를 통한 열교환으로 중간기, 동기에 저습의 외기를 이용하여 냉각장치의 운전부하를 감소시키게 된다.In order to achieve the above object, the configuration of the present invention is roughly described, by installing a rotary heat exchanger before and after the evaporator to reduce the capacity of the evaporator, that is, the cooling device, and using the reheat heat exchanger using the waste heat of the cooling device The temperature is increased, and a fixed sensible heat exchanger is installed to reduce the operating load of the cooling device by using low-humid outdoor air in the middle and synchronous by heat exchange through the outside and exhaust.
이하, 본 발명에 따른 실시예를 첨부된 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명에 따른 냉풍건조시스템의 일예를 도시한 것으로, 건조실(23)에서 나온 고온 다습한 공기는 일정속도로 회전하는 회전형열교환기(12)의 일측(12a)을 통과한다. 이때 건조실(23)에서 나온 공기는 대체로 40-50℃를 유지하고 있으며 상기 열교환기(12)를 통과하면서 약 10℃가량 하강하여 30-40℃가 된다. 이 공기는 배기통로(11)을 통과하고, 냉각용 열교환기 즉, 냉동시스템의 증발기(evaporator)(13)를 통해서 냉각, 제습되어 습기가 제거되게 된다.Figure 1 shows an example of a cold air drying system according to the present invention, the hot and humid air from the drying chamber 23 passes through one side 12a of the rotary heat exchanger 12 rotating at a constant speed. In this case, the air from the drying chamber 23 is generally maintained at 40-50 ° C., while descending about 10 ° C. while passing through the heat exchanger 12 to 30-40 ° C. The air passes through the exhaust passage 11, and is cooled and dehumidified by the cooling heat exchanger, that is, the evaporator 13 of the refrigeration system to remove moisture.
본 발명에서 회전식 열교환기를 적용하는 이유는 공간축소를 위함이다.The reason for applying the rotary heat exchanger in the present invention is for space reduction.
증발기(13)를 거친 저온건조한 공기는 냉각용송풍기(16)에 의해 회전형 열교환기(12)의 다른 측(12b)을 통과하면서 일정온도가 올라가게 된다. 여기서 일부의 공기는 상부의 배기팬(21)을 통해 배기된다.The low temperature dry air passing through the evaporator 13 is increased by a constant temperature while passing through the other side 12b of the rotary heat exchanger 12 by the cooling blower 16. Here some air is exhausted through the upper exhaust fan (21).
열교환기(12b)를 통과한 공기는 상부의 유입팬(20)을 통해 유입된 외기와 합쳐지면서 급기,환기칸막이(15)를 거쳐 급기통로(6)를 통해 재열용 열교환기(17)로 공급된다.The air passing through the heat exchanger (12b) is combined with the outside air introduced through the inlet fan 20 of the upper portion and supplied to the reheat heat exchanger (17) through the air supply passage (6) through the air supply and ventilation partition (15). do.
한편, 이때 급기,환기칸막이(15)에는 바이패스댐퍼(15a)가 설치되어 습도센서에 의해 건조실을 거친 공기의 습도가 낮을 경우(예를들어 상대습도 40%이하)에는 바로 급기통로(6)로 바이패스시킨다. 이 댐퍼는 일반적으로 사용되는 볼륨댐퍼이므로 자세한 도시는 생략한다.On the other hand, at this time, the air supply passage (6) is provided with a bypass damper (15a) in the air flow through the drying chamber by the humidity sensor is low (for example, 40% relative humidity or less) immediately the air supply passage (6) Bypass Since this damper is a commonly used volume damper, detailed illustration is omitted.
열교환기(12a) 또는 바이패스된 공기는 냉각장치의 폐열을 이용한 재열용열교환기(17)를 통과한 급기는 온도 상승후 건조실(23)에 다시 공급된다.The heat exchanger 12a or the bypassed air passes through the reheat heat exchanger 17 using waste heat of the cooling device and is supplied to the drying chamber 23 after the temperature rises.
여기서 상부에 설치된 고정현열교환기(5)는 중간기와 동기에 저습의 외기를 이용하게 되며, 다습한 여름철에는 이용되지 않는 것이 바람직하므로 외기의 유입팬(20)을 작동하지 않는다.Here, the fixed string heat exchanger 5 installed in the upper portion uses low-humidity outdoor air in synchronization with the intermediate phase and does not operate the inflow fan 20 of the external air because it is preferably not used in a humid summer season.
한편, 건조실의 입구에는 순환용송풍기(18)가 설치되어 있고, 피건조물은 예를들어 컨베이어를 통해 반입 및 배출되도록 한다.On the other hand, the circulation blower 18 is installed at the inlet of the drying chamber, and the dried object is brought in and discharged through a conveyor, for example.
미설명 부호 10, 19는 각각 외부벽과 내부벽을 지칭한다.Reference numerals 10 and 19 refer to an outer wall and an inner wall, respectively.
다음으로 도 2는 본 발명에 따른 냉동시스템을 도시한 것으로, 압축기(compressor)(1)에서 고온고압의 냉매가스가 응축용 열교환기(25)와 재열용 열교환기(17)로 3방향밸브(3)에 의해 분배되고 각각 응축되어 냉각용 열교환기(13)에서 증발하여 압축기(1)로 돌아오는 시스템이다.Next, Figure 2 shows a refrigeration system according to the present invention, the refrigerant gas of the high temperature and high pressure in the compressor (1) to the three-way valve (condensation heat exchanger 25 and the reheat heat exchanger 17) 3) is a system distributed by each condensation and evaporated in the cooling heat exchanger (13) to return to the compressor (1).
한편, 도시한 바와 같이 본 냉동시스템은 다수의 전자변(A,B,C,D)이 설치되어 있으나, 평상시에는 모두 닫혀있고, 냉각용 열교환기(13)의 열부하가 감소할 때 즉, 건조실(23)의 건조부하가 감소하는 경우에는 전자변(A,B)가 열려서 과열증기가 냉각용 열교환기(13), 즉 증발기를 통과한 습윤증기와 혼합하여 포화증기가 유지되므로 압축기(1)의 부하가 줄어들게 된다.On the other hand, as shown in the drawing, a large number of electromagnetic valves (A, B, C, D) are installed, but are normally closed, and when the heat load of the cooling heat exchanger (13) decreases, that is, the drying chamber ( When the dry load of 23) decreases, the solenoid valves A and B are opened so that the superheated steam is mixed with the cooling heat exchanger 13, i.e., the wet steam passed through the evaporator, so that the saturated steam is maintained. Will be reduced.
또한 재열용열교환기(17)의 열부하가 감소할 때 즉, 실내 재열부하가 감소할때는 전자변(C)가 열려 보조응축용 열교환기(25a)에서 냉매가스를 완전히 응축시킴으로써 과냉각도를 유지하게 된다.In addition, when the heat load of the reheat heat exchanger 17 decreases, that is, when the indoor reheat load decreases, the electronic valve C is opened to maintain the supercooling degree by completely condensing the refrigerant gas in the auxiliary condensation heat exchanger 25a.
여기서 미설명부호 30은 일방향밸브이고, 도 1에 도시된 바와 같이, 응축용 열교환기(25)와 보조응축용 열교환기(25a)는 각각 실외에 설치되어 있고, 냉동시스템의 폐열을 이용하는 재열용열교환기(17)는 실외에서 급기를 가열하는 역할을 수행한다.Here, reference numeral 30 denotes a one-way valve, and as shown in FIG. 1, the condensation heat exchanger 25 and the subcondensation heat exchanger 25a are each installed outdoors, for reheating using waste heat of the refrigeration system. The heat exchanger 17 serves to heat the air supply outdoors.
이상에서 설명한 바와 같이, 본 발명은 증발기 전후에 작용하는 로터리식 열교환기를 설치함으로써, 증발기를 통과하는 습윤공기의 온도를 떨어뜨리게 되어 냉동시스템의 압축기의 부하를 줄이게 되어 냉동시스템이 작아지는 잇점이 있다.As described above, the present invention has the advantage of reducing the load of the compressor of the refrigeration system by reducing the temperature of the wet air passing through the evaporator by installing a rotary heat exchanger acting before and after the evaporator has the advantage that the refrigeration system is smaller. .
또한 증발기를 통과한 저온,제습된 공기가 상기 로터리식 교환기의 다른 측을 통과하도록 함으로써, 재열효과를 가져올 수 있게되므로 재열기의 역할을 분담할 수 있는 잇점이 있다.In addition, by allowing the low temperature, dehumidified air passing through the evaporator to pass through the other side of the rotary exchanger, it is possible to bring about the reheating effect, thereby sharing the role of the reheater.
또한 상부에 고정현열교환기를 설치함으로써, 동기 또는 중간기에 건조한 외기를 이용할 수 있으므로 냉각장치의 운전부하를 줄일 수 있는 잇점이 있다.In addition, by installing a fixed sensible heat exchanger on the upper side, it is possible to use dry air in the synchronous or intermediate stage, which has the advantage of reducing the operating load of the cooling device.
상기에서 본 발명은 비록 하나의 실시예만 설명하고 있으나, 이는 단지 예시이며, 본 발명의 정신을 이용하여 여러 가지 변형과 변화가 가능할 것이나, 이는 본 발명의 권리범위에 속하게 됨을 첨부된 청구범위를 통해서 알 수 있을 것이다.Although the present invention has been described above by way of example only, it is merely illustrative, and various modifications and changes may be made using the spirit of the present invention, which fall within the scope of the present invention. You can see it.
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KR1019980012737A KR100263766B1 (en) | 1998-04-10 | 1998-04-10 | Freeze drying system |
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KR100736857B1 (en) * | 2007-01-30 | 2007-07-06 | 이용각 | Drying system using heat pump |
KR101226454B1 (en) * | 2012-05-15 | 2013-01-28 | (주)거성에너지 | Multi-functional refrigerating system for low-temperature storage, curing and drying agricultural or marine products using cool or warm air |
CN108371322A (en) * | 2018-04-03 | 2018-08-07 | 湖南龙旺食品有限公司 | It circles round air-cooled vermicelli process device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111365972B (en) * | 2020-03-20 | 2021-08-17 | 安徽华意智能家居有限公司 | Woodwork drying device for furniture production |
KR102368407B1 (en) | 2021-07-15 | 2022-02-28 | 안태규 | air cooling dry apparatus |
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1998
- 1998-04-10 KR KR1019980012737A patent/KR100263766B1/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100736857B1 (en) * | 2007-01-30 | 2007-07-06 | 이용각 | Drying system using heat pump |
KR101226454B1 (en) * | 2012-05-15 | 2013-01-28 | (주)거성에너지 | Multi-functional refrigerating system for low-temperature storage, curing and drying agricultural or marine products using cool or warm air |
CN108371322A (en) * | 2018-04-03 | 2018-08-07 | 湖南龙旺食品有限公司 | It circles round air-cooled vermicelli process device |
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KR100263766B1 (en) | 2000-08-16 |
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