KR20180057834A - Evaporation tank for a concentrator in a vacuum and low temperature - Google Patents

Abstract

The present invention relates to an evaporation tank in a vacuum low-temperature concentrator, which comprises: a space for a high-vacuum heat medium oil which is formed by outer and inner containers at a lower end portion by a height about less than or equal to half the height of a floor and an evaporation tank; a heat medium oil introduced into the space in a high-vacuum state; a suction valve connected to the outer container for highly vacuuming the space; a first temperature sensor connected to the inner container to sense an internal temperature of the evaporation tank; a second temperature sensor connected to the outer container to sense a temperature of the thermal medium oil in the space; and a heating means installed at the bottom of the outer container to heat the heat medium oil. Accordingly, the present invention does not generate any odor as a result of performing vacuum treatment after inserting the heat medium oil, is free from the hassle of recharging, and is efficient in temperature transfer due to the vacuum state.

Description

[0001] The present invention relates to a vaporization tank for a vacuum low-temperature concentrator,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporization tank for a vacuum low-temperature concentrator, and more particularly, to a vaporization tank in which a space containing a heat medium oil is vacuumed.

Typically, vacuum low temperature concentrators include evaporation tanks, collecting tanks (overflow tanks), liquefaction members and storage tanks and high vacuuming members. Here, the evaporation tank is heated by extracting the extractant from the vegetable raw materials (fruits, vegetables, medicines, etc.), and the water is converted into steam and evaporated, and the extract is concentrated to form a concentrate. The collecting tank collects the vapor from the evaporating tank and also serves as an overflow preventing tank which overflows with steam or air bubbles due to the heating of the evaporating tank and induces it to not overflow in the evaporating tank. The liquefying member is a device for forming a condensate by cooling or liquefying the vapor collected in the collection tank, and may include at least one of an air-cooled heat exchanger and a water-cooled heat exchanger. In the liquefying member, the collected vapor is separated into a condensate containing distilled water and an active ingredient. The distilled water is sent to the storage tank and the condensate is sent back to the evaporation tank. Therefore, the active ingredient of the extract of the vegetable raw material is not discharged to the outside, but later comes out as a concentrate in the evaporation tank. The high vacuuming member lowers the evaporation temperature of the raw material in the evaporation tank and makes the evaporation tank high in vacuum to prevent the raw material from burning. The collection tank is also highly vacuumed. The storage tank can also be vacuumed. Thus, the vegetable raw material is extracted and concentrated at high temperature and high pressure.

In order to solve the irregular heat transfer problem of the evaporation tank and to control the internal temperature of the evaporation tank in the conventional concentration, the evaporation tank of the publication No. 10-2009-0085720 (published on August 10, 2009) An inner container for storing the ginseng, red ginseng and the like therein; An outer vessel provided on an outer circumferential surface of the inner vessel, the outer vessel being provided with a hole through which a heating rod can be inserted; A space portion provided between the inner container and the outer container and filled with thermal oil or paraffin oil and having a heating rod inserted into one side thereof; A heating bar directly attached to the space portion to directly heat the heating medium or the paraffin oil filled in the space portion; And a sensor rod mounted on the inner side of the inner vessel to monitor the temperature in the vessel and to turn the heating rod on and off when the temperature changes to a predetermined temperature or lower, do.

In this publication, since the sealed space is filled with thermal oil or paraffin oil and heated, pressure is generated in these spaces to form a pore or discharge port in order to prevent explosion by pressure. And the smell of paraffin from the outlet was awful, and there was the inconvenience that the paramin should be charged every certain cycle.

In another patent document, Patent No. 10-1606328 (registered on March 18, 2016), the evaporation tank is made of an inner passage outer tube, and a heating medium is introduced into a space portion between the inner passage and the outer tube through a loading port. The vacuum is formed in the evaporation tank (concentrator main body), the collecting tank, the liquefying member (condensing portion) and the storage tank (storage portion), but the space portion is not vacuumed. Therefore, there are problems such as the evaporation tank of this patent or the above-mentioned patent publication.

Public number 10-2009-0085720 (public date August 10, 2009) Patent No. 10-1606328 (Registration date: March 18, 2016)

In the vacuum low temperature concentrator, the inner temperature and the vacuum degree of the evaporation tank are kept constant. In addition, the double structure evaporation tank is filled with the heating medium (eg paraffin) and sealed to prevent the heat medium oil from leaking to the outside, Is to provide an evaporation tank that does not require recharging paraffin.

A vacuum low-temperature concentrator comprising a vaporizing tank, a collecting tank, a liquefying member, a storage tank, and a high-vacuuming member, wherein the evaporation tank has a bottom and a bottom of the evaporation tank, A first temperature sensor connected to the inner cylinder for sensing an internal temperature of the evaporation tank, a second temperature sensor connected to the inner cylinder for detecting the internal temperature of the evaporation tank, A bimetal connector connected to a second temperature sensor connected to the outer tube for sensing the temperature of the heat medium oil in the space, and heating means installed at the bottom of the outer tube for heating the heat medium oil.

In a preferred embodiment of the present invention, the thermal oil preferably comprises paraffin oil.

In a preferred embodiment of the present invention, it includes a controller for controlling the heating time and heating temperature, and the pressure according to the concentration of the concentrate.

In a preferred embodiment of the present invention, a heat transfer tube is provided in which the heat medium oil is drawn in a vacuum state in a space of a double structure consisting of an inner passage outer tube.

In a preferred embodiment of the present invention, the evaporation tank of the present invention is usable in an extractor or an extraction and concentration apparatus.

As a result of vacuum treatment after injection of liquid paraffin, there is no smell at all, and there is no hassle of recharging and vacuum transfer is efficient. Therefore, it can contribute to the market that needs extraction and enrichment such as health center, oriental medicine clinic, orchard, farm, food company, maintenance of high efficiency and cost reduction.

1 is a perspective view of a vacuum low temperature thickener of the invention;
2 is a cross-sectional view of the evaporation tank of the first embodiment of the vacuum low-
3 is a cross-sectional view of a vaporization tank of a second embodiment for a vacuum low-temperature concentrator.

1 is a perspective view of a low-temperature vacuum concentrator equipped with a vaporizing tank of the present invention. The low-temperature vacuum concentrator of the present invention includes a vaporizing tank, a collecting tank, a liquefying member, a storage tank, and a high-vacuum member.

 In the evaporation tank 10, when the extract liquid of the herbal medicine or the like is heated and the moisture is converted into steam and evaporated and the extract liquid (the raw material in the case of the extractor) is concentrated to form a concentrated liquid, It is.

The collection tank 30 is placed at a position higher than the evaporation tank 10, so that the vapor formed in the evaporation tank 10 is raised to be collected. That is, the vaporized vapor or bubbles in the evaporation tank 10 are prevented from overflowing to the outside.

The liquefying member 40 liquefies the vapor collected in the collection tank 30 to form a condensate. Illustratively, the liquefier member 40 includes at least one of an air-cooled heat exchanger and a water-cooled heat exchanger. The vapor collected in the collection tank (30) is separated into condensate and distilled water containing the components of the extract by the liquefying member (40). The distilled water is sent to and stored in the storage tank 50 through the connection pipe, and the condensed liquid is returned to the evaporation tank. By repeating this operation, only the concentrate of the raw material of the extract is left in the evaporation tank, and it can be automatically controlled by the control means according to the concentration and viscosity of the concentrate. For example, it takes 30 minutes to make a concentrate, 50 minutes for a concentrated gel, and 70 minutes for a powder.

For the sake of understanding, reference is made to a conventional low-temperature vacuum concentrator and can be more easily understood with reference to Patent No. 10-1235146 registered by the applicant of the present invention.

Next, the evaporation tank 10, which is a characteristic component of the present invention, will be described with reference to FIG.

The evaporation tank 10 has an outer tube 12 and an outer tube 12 which form a double structure, that is, a space 14 containing a heating medium oil 13 together with an inner tube 11 and an inner tube 11 forming the inside of the evaporation tank. And an outlet 15 for discharging the concentrated liquid. The height of the outer cylinder 12 is about half the height of the inner cylinder 11 so that the space 14 containing the thermal oil 13 is formed to a height of about 1/2 of the evaporation tank. The height of the space 14 can be set according to the amount of the concentrated liquid to be produced. For example, when the amount of concentrated liquid in the 20-liter evaporation tank is 2 liters, the height of the heat-transfer oil space 14 of the evaporation tank is about 2 liters of the volume of the evaporation tank 10 considering the area of the bottom surface of the evaporation tank . The heating medium oil 13 is drawn into the heating medium oil space 14 so that the heating medium oil 13 is heated by the heating means 20 so that heat is uniformly transmitted to the extracting liquid inside the evaporation tank, The extract is boiled and evaporated.

The thermal oil is sealed in the evaporation tank and is operated to indirectly heat the evaporation tank. These thermal oils are easy to control the temperature and can prevent pyrolysis due to local heating with uniform heat. The breaking point of the extract in the low temperature vacuum concentrator of the present invention is about 70 캜. Therefore, since the boiling point of the heat medium oil introduced into the evaporation tank is 200 ° C or higher, evaporation of the heat medium oil does not occur. These types are petroleum and synthetic. Since the thermal oil is used for a long time in the sealed circulation system, it should not cause thermal decomposition and oxidation, and should not be corroded because it is exposed to the metal part of the outer cylinder and inner cylinder for a long time, and various seals between the valve and the contact, Do not damage it. In addition, there should be no sharp drop in viscosity for fluidity.

The paraffin in the preferred embodiment of the thermal oil oil is a paraffinic hydrocarbon CH3 (CH2) nCH3. The melting point is in the range of 47 to 65 ° C and the breaking point is 350 ° C. And satisfies the above-mentioned conditions, pyrolysis, oxidation resistance, corrosion resistance and the like.

The first temperature sensor 16 for sensing the temperature inside the evaporation tank 10 is connected to the inside of the evaporation tank 10 through the inner tube 11 so that the temperature inside the evaporation tank 10 is constant Control. In a typical operation, the internal temperature of the evaporation tank 10 is set by the first temperature sensor 16 and accordingly the heating means 20 is operated. Since the internal temperature is about 70 degrees and the boiling point of the heat medium oil is significantly lower than the breaking point of about 200 to 300 degrees, there is no fear that the heat medium oil 13 breaks down and overflows. However, in case the heating means 20 continues to operate due to the failure of the first temperature sensor and the heating medium oil 13 rises to a high temperature, it is connected to a second temperature sensor for sensing the temperature of the heating medium oil 13 The second temperature sensor detects the temperature of the heating medium oil 13 and when the temperature of the heating medium oil 13 is pyramid, when the temperature becomes 100 to 110, the heating means 20 ). In this way, the evaporation tank is not damaged by the heating of the heat medium oil 13 at all. The bimetal connector 17 may be provided on the bottom surface of the evaporation tank 10 (see FIG. 2) or on the side surface (see FIG. 3).

The evaporation tank 10 includes a valve 18 for supplying the thermal oil 13 to the outer cylinder 12 and a valve 19 connected to a pump (not shown) for high vacuuming. The heat medium oil 13 is introduced into the heat medium oil space 14 through the valve 18 so as to occupy about 1/2 to 2/3. The valve (19) and the valve (18) may be installed as shown in the figure, or two valves may be provided by a single valve. When the heat medium oil 13 is drawn into the space 14, the valve 18 is sealed to prevent the heat medium oil from leaking. And a pump is used to evacuate the pressure in the space 14 through the valve 19 for vacuum. This valve 19 is also sealed to prevent the heat medium oil from leaking. In this way, the outer tube is completely sealed and the heat medium oil 13 does not leak to the outside at all, so that the smell due to the heat medium flow path can be prevented. Also, there is no need to recharge the heat medium oil for a long time.

Next, the space 14 into which the heating medium oil 13 is drawn is in a vacuum state, so that the heating medium oil 13 is heated by the heating means 20 at the lower end to travel in the space 14, And then it is heated. At this time, since the pressure in the space 14 maintains the vacuum state, it does not rise any more, and no problem due to the high pressure in the space 14 occurs at all. The temperature of the heat medium oil 13 that transfers heat to the heat medium oil 13 also does not rise up to 100 degrees because the break point of the extractant in the evaporation tank 10 maintains a constant improvement of about 70 degrees. The heat medium oil 13 is never blown off by heating by the heating means 20 at all. Then, when the heating medium oil is continuously heated by the careless heating of the evaporation tank 10 and becomes 110 degrees or more, the operation of the heating means 20 is stopped by the bimetal. In the vacuum state, the thermal oil flows actively and transfers heat uniformly to the extract.

In another embodiment of the present invention, as shown in Fig. 3, a heat transfer tube 60 is provided in a space 14 having a double structure composed of an inner passage outer tube, and the thermal oil 13 is introduced into the space. In this case, the thermal efficiency is somewhat lowered, but the vacuum state in the space can be easily controlled, and leakage of the heat medium oil due to oxidation of the welded portion of the inner tube 12 and the outer tube 13 can be more reliably prevented even after long use.

In the present invention, only one heating means 20 is shown in Fig. 1, but two or more heating means 20 may be provided depending on the capacity of the concentrator.

The present invention solves the problem that irregular temperature transfer of the concentrators of the present invention and the temperature and the degree of vacuum inside the evaporation tank are not constant, but it is also possible to prevent the odor due to leaking of the heat medium oil and to use it for a long time by charging once, , It is possible to maximize the extraction and concentration as well as to maintain the components of the concentrate, thereby reducing the cost.

Although the concentrator has been described in the above-mentioned preferred embodiments, the evaporation tank of the present invention is also applicable to the extractor, the extraction and concentration apparatuses. In order to facilitate understanding, the extractor and the concentrator will be explained in a simple manner. The extractor is made by adding a plant material (fruit, vegetable, medicine, etc.) into a evaporation tank and adding a solvent such as water or ethanol to heat and pressurize the raw material And the concentrator is a device in which the liquid main component generated here is placed in a vaporization tank to evaporate a solvent such as water or ethanol to produce a solid or a concentrated liquid.

10: Evaporation tank
11: My heart
12: outer tube
13: Thermal oil
14: Space
16: first temperature sensor
17: Bimetal connector
18, 19: Valve
20: Heating means
30: Collection tank
40: liquefying member
50: Storage tank
60: Heat transfer tube

Claims (5)

A vacuum low-temperature concentrator comprising a vaporizing tank, a collecting tank, a liquefying member, a storage tank and a high-vacuum member,
Wherein the evaporation tank has a space for a high-vacuum heat medium body formed by an outer cylinder and an inner cylinder at a lower end of the bottom and about 1/2 the height of the evaporation tank, a heat medium oil which is drawn in a high vacuum state in the space, A bimetal connector connected to a second temperature sensor connected to the outer tube for sensing the temperature of the heat medium oil in the space, and a second temperature sensor connected to the outer tube for sensing the temperature of the heat medium oil in the space, And heating means provided on the bottom of the outer cylinder for heating the thermal oil. The method according to claim 1,
Wherein the thermal oil is a paraffin oil. The method according to claim 1,
And a controller for controlling the heating time and heating temperature, and the pressure according to the concentration of the concentrated liquid. The method according to claim 1,
And a heat transfer tube in which the heat medium oil is drawn in a vacuum state in a space of a double structure composed of the inner passage outer tube. An extractor or extraction and concentration device equipped with a evaporation tank according to any one of claims 1, 2 and 4.

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