KR20220069230A - Apparatus and Method of drying red fine matched red pine oil extraction - Google Patents

Abstract

A method of extracting red pine oil and simultaneously drying red pine in a drying chamber of the present invention comprises: a step of increasing the temperature by operating a circulation fan and a heater installed in the drying chamber to circulate hot air in the drying space loaded with red pine; a step of discharging steam generated in the drying space to the outside by operating an exhaust fan installed in the middle of an exhaust duct while opening an exhaust damper installed at an inlet side of the exhaust duct for discharging steam in the drying chamber to the outside; a step of cooling the steam discharged through the exhaust duct through a cooler installed on an outlet side of the exhaust duct so that extracted red pine oil is collected by falling into an oil container; a step of controlling the exhaust damper to a cut-off state and stopping the operation of the exhaust fan to block the steam discharge to the exhaust duct when the temperature inside the drying space rises to a drying temperature of 70 to 90 ℃ and the oil extraction end time is reached after 90 to 170 hours have elapsed; and a step of stopping the operation of the circulation fan and the heater when the internal humidity of the drying space falls below the humidity that satisfies the condition of 15% or less of the internal moisture content of the red pine. Accordingly, it is possible to increase the economic value of domestic red pine lumber.

Description

Red pine drying apparatus and drying method for oil extraction {Apparatus and Method of drying red fine matched red pine oil extraction}

The present invention relates to a drying apparatus and a drying method for red pine oil for extracting red pine oil, and in particular, a drying apparatus and drying method for red pine oil for extracting red pine oil, which can improve the economic value of red pine wood by maximizing oil extraction at the same time as drying the red pine wood is about

Pine wood has a beautiful pattern and color and a strong bending moment, so it is used as the main material of hanok and is used for windows and traditional joinery. However, if it is to be used as a building material or furniture material, it must be cut in winter because it has a close correlation with wood moisture. This is because cutting down in winter when wood moisture is low is less likely to be damaged by moisture or mold fungus after sawing or processing. Due to these shortcomings, the economical utilization rate as a high-quality material for building furniture is very low.

On the other hand, pine extracts such as pine needles and pine needles have been widely used as folk remedies for health maintenance and disease prevention since ancient times. It is recorded that it relaxes the five intestines, makes the body lighter when wearing long clothes, does not go hungry or thirsty even when grain is cut, and suppresses stroke, heart disease, and aging.

In modern times, it has been found that pine needle extract contains various active ingredients with strong pharmacological action such as terpenes, vitamins, essential/non-essential amino acids, flavonoids, and polyphenols, It is known that red pine has a high content of polyphenols, terpenes, and the like used as indicators, and is excellent in pharmacological effects. For example, Pinus resinosa (red pine) has an EC50 of 61 μg/L, whereas Pinus strobes (Strobe pine) has an EC50 of 159 μg/L, which is known to have more than double the antioxidant activity.

In addition, it has been found that red pine extract has a positive effect on skin aging by reducing the SOD expression of the skin due to ultraviolet rays and having free radical scavenging activity.

Various products for red pine leaf extract with such effects as anti-aging and sterilization are on the market, and in particular, for convenience, products containing red pine leaf extract oil in soft capsules are being sold.

On the other hand, trees cut down in summer have a lot of moisture, which makes it easy for insects to grow and turn blue. Also, in the summer, it is difficult to transport the felled trees because of overgrown trees and grass. The best time to harvest is in the fall of the last year. In autumn, trees that have fallen leaves lose moisture as well. Therefore, wood harvested in winter is hard and has low moisture content, so it has high economic value as wood. Therefore, the timber harvested in summer is expensive to transport and dry, so the efficiency of wood production is reduced. The harvested trees have a drying period of about 3 years or more. If wood that has not been dried properly is used, it will become twisted and cracked, so the peeled wood should be dried slowly in the shade. It requires a lot of sincerity to dry the wood without going against the nature of the wood.

As described above, natural drying takes a lot of time, so the production cost of wood is high, so it is not widely used.

Therefore, to dry wood in a short period of time, wood drying with a moisture content of 15% or less is used through artificial drying such as hot air drying, steam drying, smoke drying, vacuum drying, or high frequency drying.

In general, hot air drying focuses on shortening the drying time rather than extracts and drying in a high temperature and low humidity environment of 100° C. or higher, so there is no interest in extracts. On the other hand, the method focusing on the extract uses a method of extracting from wood by-products such as pine leaves, sawdust, and pulverized products rather than the production of wood.

As described above, in spite of occupying more than 80% of domestic forests, most of them depend on imported timber, and more than 90% of the hanok and timber market depend on imported goods. Accordingly, research efforts are underway to reduce the production cost of domestic pine products and to increase the value stock and utilization rate.

Registered Patent No. 10-2039262 Registered Patent No. 10-1773452 Registered Patent No. 10-1813863 Registered Patent No. 10-1817505 Registered Patent No. 10-1903630 Registered Patent No. 10-1361756 Patent Publication No. 10-2018-0116955 Patent Publication No. 10-2013-0134495

It is an object of the present invention to provide a red pine drying apparatus and drying method for red pine oil extraction, which can improve the overall utility of red pine wood by increasing the amount of red pine oil extracted while drying the red pine wood.

Another object of the present invention is to provide a drying apparatus for red pine and a drying method for extracting red pine oil, which can collect rosin extracted during drying of red pine.

The drying apparatus of the present invention for achieving the above object includes a drying room provided with a machine installation space above the drying space, a circulation fan installed in the machine installation space, a heater installed in front of the circulation fan in the machine installation space, and steam in the drying space Exhaust duct for discharging to the outside, an exhaust fan installed on the roof of the drying room to discharge the steam in the exhaust duct to the outside, an exhaust damper installed on the steam inlet side of the exhaust duct, and installed on the steam outlet side of the exhaust duct A cooler for cooling the steam discharged from the exhaust duct, an oil tank installed below the outlet of the exhaust duct to collect falling oil, a temperature sensor for measuring the temperature in the drying space, and a humidity sensor for measuring the humidity in the drying space and a control unit for controlling a circulation fan, a heater, an exhaust fan, an exhaust damper, and a cooler in response to the temperature and humidity information in the drying space sensed through the temperature sensor and the humidity sensor.

In the present invention, the control unit operates the circulation fan and heater to circulate hot air in the drying space to increase the temperature, and operates the exhaust fan with the exhaust damper open to discharge steam generated in the drying space to the outside and exhaust The steam discharged through the duct is cooled through the cooler, and the extracted red pine oil is controlled to be collected in the oil barrel, and the temperature inside the drying space rises to the set drying temperature, and when the set oil extraction end time is set, the steam goes to the exhaust duct. It is desirable to execute a control program to control the exhaust damper to a blocked state to block the exhaust, stop the operation of the exhaust fan, and stop the operation of the circulation fan and the heater when the internal humidity of the drying space falls to the set dry humidity.

The drying temperature set here is 70 to 90 ℃, and the oil extraction end time is preferably 90 hours to 170 hours. If it is less than 70℃, the overall drying time is long, and the amount of extracted red pine oil is relatively reduced. do. On the other hand, depending on the processing type of the wood to be dried, it is preferable that the time setting is programmed to vary from 90 to 120 hours when the thickness is thin such as a plate, but 120 to 170 hours when the thickness is thick such as a structural wood or a column wood.

The drying humidity set in the present invention is preferably programmed to a humidity that satisfies the condition that the internal moisture content of red pine is 15% or less.

In addition, in the present invention, the red pine loaded in the drying space is loaded on a metal platen, and it is preferable to configure the metal platen to collect rosin extracted from the loaded red pine.

The method of extracting red pine oil and drying red pine at the same time as extracting red pine oil in the drying room according to the present invention comprises the steps of operating a circulation fan and a heater installed in the drying room to circulate hot air in a drying space loaded with red pine to increase the temperature; Discharging the steam generated in the drying space to the outside by operating the exhaust fan installed in the middle of the exhaust duct with the exhaust damper installed on the inlet side of the exhaust duct for exhausting the steam to the outside open; The step of cooling the vapor discharged through the exhaust duct to be collected by falling into the oil barrel through a cooler installed on the outlet side of the exhaust duct, and the temperature inside the drying space is increased to a drying temperature of 70 to 90 ° C., and 90 to 170 hours When the time elapses and the oil extraction end time has elapsed, the exhaust damper is controlled to a blocked state to block the vapor discharge to the exhaust duct and the exhaust fan is stopped. and stopping the operation of the circulation fan and the heater when the humidity falls below the desired level.

As described above, the red pine drying apparatus and drying method for extracting red pine oil of the present invention can collect oil extract or rosin at the same time as red pine is dried. In addition, by hot-air distillation drying at a low temperature of less than 100 ℃, cracking or warping is less, it is possible to increase the economic value of domestic red pine wood.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned above will be clearly understood by those skilled in the art without departing from the spirit and scope of the present invention.

1 is a schematic front configuration view for explaining a preferred embodiment of a red pine drying apparatus for extracting red pine oil according to the present invention.
FIG. 2 is a side view of the drying apparatus of FIG. 1; FIG.
Fig. 3 is a timing diagram for explaining the operation of Fig. 1;
Figure 4 is a process flow chart for explaining a preferred embodiment of the red pine drying method for extracting red pine oil of the present invention.

With respect to the embodiments of the present invention disclosed in the text, specific structural or functional descriptions are only exemplified for the purpose of describing the embodiments of the present invention, and the embodiments of the present invention may be embodied in various forms and the text It should not be construed as being limited to the embodiments described in .

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals are used for components.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate that the specified feature, number, step, action, component, part, or combination thereof exists, and is one or more It should be understood that this does not preclude the possibility of addition or existence of other features or numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, specific examples of the red pine drying apparatus and method for extracting red pine oil according to the present invention will be described in detail.

1 is a schematic front configuration view for explaining a preferred embodiment of a red pine drying apparatus for extracting red pine oil according to the present invention, and FIG. 2 is a side configuration diagram of the drying apparatus of FIG. 1 .

Referring to the drawings, the drying apparatus 10 includes a drying space 102 and a mechanical equipment space 104 in the drying chamber 100 . The mechanical equipment space 104 is located above the rolling space 102 . The drying room 100 is composed of a wall and a roof reinforced with urethane insulation and an iron plate on a concrete floor. A hot air passage 106 is formed on one side wall. The hot air supplied to the hot air passage 106 flows into the lower side of the drying space 102 through a ventilation hole located below the side wall, and flows out into the machine installation space 104 through an outlet located on the ceiling of the drying space 102 . will form a passage.

A circulation fan 110 and a heater 120 are installed in the mechanical facility space 104 . The circulation fan 110 is composed of, for example, three sets of 800φ and aero fin type 15KW heaters are installed in front of each. Accordingly, the heat generated by the heater 120 is circulated in the drying space 102 as hot air by the circulation fan 110 (refer to the solid arrow in FIG. 1 ).

An exhaust duct 130 is installed in the drying chamber 100 . The inlet of the exhaust duct 130 communicates with the drying space 102 and is installed to extend to the outside through the roof. A sirocco type exhaust fan 140 is installed on the roof and disposed in the middle of the exhaust duct 130 to discharge the steam in the drying space 102 to the outside. An exhaust damper 150 is installed on the inlet side of the exhaust duct 130 . A cooler 160 is installed at the outlet side of the exhaust duct 130 , and an oil tank 170 is disposed below the outlet. Therefore, the steam discharged along the exhaust duct 130 is condensed on the inner surface while being cooled by the cooler 160 installed on the outlet side, and the condensed water falls on the inner surface and is collected in the oil tank 170 (FIG. 1). See dotted arrow).

A temperature sensor 180 and a humidity sensor 190 are installed in the drying space 102 of the drying room 100 , and the temperature and humidity data sensed by the controller 200 are provided.

The control unit 200 is programmed to control the operation and stop of the circulation fan 110, the heater 120, the exhaust fan 140, the exhaust damper 150 and the cooler 160 in response to the sensed temperature and humidity data, have.

The red pine wood loaded in the drying space 102 is processed into various shapes such as boards, square wood, structural wood, and pillar materials, and then is bent and mounted on the metal platen 300 to be loaded in the drying space 102 .

FIG. 3 is a timing diagram of a preferred embodiment for explaining the operation of FIG. 1 .

Referring to FIG. 3 , when a drying operation command is issued, the control unit 200 operates the circulation fan 110 and the heater 120 to circulate hot air and increase the temperature inside the drying space 102 . After about 2 days, that is, 48 hours, it rises to about 50℃, and when about 2 days have elapsed, it rises to the target set temperature of 80℃.

At the same time, the exhaust fan 140 , the exhaust damper 150 , and the cooler 160 are also operated to leave the exhaust damper 150 in an open state to discharge the vapor inside the drying space 102 to the outside.

Therefore, the extracted oil is included in the condensed water while the moisture component inside the red pine is discharged as steam by the initial hot air drying and is collected in the oil tank 170 . On the other hand, the rosin component discharged from the wood falls downward and is collected on the metal platen 300 .

When the drying temperature set through the temperature sensor 180 rises to, for example, 80° C., the control unit 200 determines whether the oil extraction end time has elapsed through a timer, and the oil extraction end time, for example, 150 hours, that is, 6 days to 7 days. When a certain amount of time has elapsed, the exhaust fan 140 and the exhaust damper 150 are controlled to stop the steam discharge, the oil extraction is terminated, and the wood drying is continued by hot air circulation.

The control unit 200 stops the operation of the circulation fan 110 and the heater 120 when, for example, 300 hours, that is, about 2 weeks have elapsed, and maintains the temperature drop state for 2 to 3 days.

The steam discharge time and drying time are programmed according to the harvesting period of red pine, for example in summer and winter, depending on the thickness of the wood. Use value can be increased.

4 is a process flow chart for explaining a preferred embodiment of the red pine drying method for extracting red pine oil according to the present invention.

Referring to Figure 4, first prepare the loading wood (S100). For example, domestic red pine logs with a length of 2,400mm or more and a thickness of 100φ or more are harvested and delivered to the sawmill within 20 days. Then, the received red pine logs are placed on a log cart and then cut vertically to a certain thickness. Trees lit vertically are laid down and cut horizontally. Cut the processed wood in the form of boards or slats with a cutter. Bend after lamination by putting the sander on a bending plate. The bent wood is loaded into the drying chamber 100 by a forklift or the like in a state of being mounted on a surface plate.

When a drying start command is input, the control unit 200 operates the circulation fan 110 and the heater 120 installed in the drying room 100 to circulate hot air in the drying space 102 loaded with red pine to increase the temperature ( S102).

The control unit 200 operates the exhaust fan 140 installed in the middle of the exhaust duct 130 with the exhaust damper 150 installed on the inlet side of the exhaust duct 130 for discharging the vapor in the drying room to the outside in an open state. The steam generated in the drying space 102 is discharged to the outside (S104).

The controller 200 cools the steam discharged through the exhaust duct 130 through the cooler 160 installed at the outlet side of the exhaust duct 130 so that the extracted red pine oil is collected by falling into the oil barrel 170 (S106). ).

The control unit 200 exhausts the exhaust so that the temperature inside the drying space 102 rises to a drying temperature of 70 to 90° C., and when 90 to 170 hours have elapsed and the oil extraction end time comes, the steam discharge to the exhaust duct 130 is blocked. The damper 150 is controlled to the cut-off state and the operation of the exhaust fan 140 is stopped (S108).

The control unit 200 stops the operation of the circulation fan 110 and the heater 120 when the internal humidity of the drying space 102 falls below the humidity that satisfies the condition that the moisture content inside the red pine is 15% or less (S110)

The oil-containing condensed water extracted in this way and collected in the oil barrel 170 is purified to remove impurities to obtain an oil component, and the obtained oil component may be packaged or provided as a raw material for manufacturing functional products.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains.

10: drying device
100: drying room
102: drying space
104: Machine facility space
106: hot air passage
110: circulation fan
120: heater
130: exhaust duct
140: exhaust fan
150: exhaust damper
160: cooler
170: oil tank
180: temperature sensor
190: humidity sensor
200: control unit
300: metal plate
310: red pine wood

Claims (5)

a drying room 100 in which a machine installation space 104 is provided on an upper part of the drying space 102;
a circulation fan 110 installed in the machine installation space 104;
a heater 120 installed in front of the circulation fan 110 in the machine installation space 104;
an exhaust duct 130 for discharging the vapor inside the drying space 102 to the outside;
an exhaust fan 140 installed on the roof of the drying chamber 100 to discharge the steam in the exhaust duct 130 to the outside;
an exhaust damper 150 installed at the steam inlet side of the exhaust duct 130;
a cooler 160 installed on the steam outlet side of the exhaust duct 130 to cool the discharged steam;
an oil tank 170 installed below the outlet of the exhaust duct 130 to collect falling oil;
a temperature sensor 180 for measuring a temperature in the drying space 102;
a humidity sensor 190 for measuring the humidity in the drying space 102; and
In response to the temperature and humidity information inside the drying space 102 sensed through the temperature sensor 180 and the humidity sensor 190, the circulation fan 110, the heater 120, the exhaust fan 140, the exhaust and a control unit 200 for controlling the damper 150 and the cooler 160,
The control unit 200 operates the circulation fan 110 and the heater 120 to circulate hot air in the drying space to increase the temperature,
By operating the exhaust fan 140 with the exhaust damper 150 open, the steam generated in the drying space 102 is discharged to the outside;
Controlled so that the red pine oil extracted by cooling the steam discharged through the exhaust duct 130 through the cooler 160 is collected into the oil barrel 170,
When the temperature inside the drying space 102 rises to a set drying temperature, and at the set oil extraction end time, the exhaust damper is controlled to a blocked state so that the steam discharge to the exhaust duct 130 is blocked, and the exhaust fan ( 140) stop the operation,
A red pine drying apparatus for extracting red pine oil that stops the operation of the circulation fan 110 and the heater 120 when the internal humidity of the drying space 102 drops to a set drying humidity. The red pine drying apparatus for extracting red pine oil according to claim 1, wherein the set drying temperature is 70 to 90° C. and the oil extraction end time is 90 to 170 hours. The drying apparatus for extracting red pine oil according to claim 2, wherein the set drying humidity is a humidity that satisfies the condition that the internal moisture content of red pine is 15% or less. The red pine for extracting red pine oil according to claim 1, wherein the red pine loaded in the drying space (102) is loaded on a metal surface plate (300), and rosin extracted from the loaded red pine is collected on the metal surface plate (300). drying device. In the method of extracting red pine oil in a drying room and drying red pine at the same time,
increasing the temperature by circulating hot air in the drying space 102 loaded with red pine by operating the circulation fan 110 and the heater 120 installed in the drying room;
The exhaust damper 150 installed on the inlet side of the exhaust duct 130 for discharging the steam in the drying chamber to the outside is opened, and the exhaust fan 140 installed in the middle of the exhaust duct 130 is operated to operate the drying space. (102) discharging the generated steam to the outside;
cooling the steam discharged through the exhaust duct 130 through a cooler 160 installed on the outlet side of the exhaust duct 130 so that the extracted red pine oil is collected by falling into the oil barrel 170;
The exhaust damper ( 150) controlling the shut-off state and stopping the operation of the exhaust fan 140;
Red pine for extracting red pine oil comprising the step of stopping the operation of the circulation fan 110 and the heater 120 when the internal humidity of the drying space 102 falls below the humidity that satisfies the condition that the internal moisture content of the red pine is 15% or less drying method.

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