KR20220032791A - System for non-thermal sterilized cold brew tea and method for preparing cold brew tea using the same - Google Patents

Abstract

The present invention provides a system for manufacturing unheated sterilized cold brew tea, comprising: a frame; an extracting tank; a storing tank; a supplying line; a controlling valve; and an ozone generating device. The frame has a first nozzle arranged therein for supplying sterilized water to an upper part. The extracting tank is arranged inside the frame, has a second nozzle for supplying sterilized water for extraction mounted on an upper end or the inside, and has a plurality of extracting holes formed for allowing an extracting liquid to pass through on a lower surface. The storing tank is arranged in a lower part of the extracting tank inside the frame, and accommodates the extracting liquid generated in the extracting tank. The supplying line supplies the sterilized water to the first nozzle and the second nozzle. The controlling valve selectively controls the supply of the sterilized water of the supplying line. The ozone generating device generates ozone water by providing ozone to water supplied from the outside. The present invention can improve economic feasibility of a cold brew product.

Description

System for non-thermal sterilized cold brew tea and method for preparing cold brew tea using the same}

The present invention relates to a cold brew tea manufacturing system, and more particularly, it proposes a system and a new cold brew tea manufacturing method that not only manufacture high-quality cold brew tea in large quantities, but also can be distributed at room temperature for a long period of time.

Most of the tea is brewed by pouring hot water and brewing the tea leaves to drink the water from which the taste and aroma have been extracted.

In the case of coffee, when hot water extraction is used, the strong aroma and taste of coffee are brewed, while excessive caffeine and astringent or bitter taste that inhibits the sensory from the flavor of coffee are also extracted. There is a disadvantage in that it cannot be completely extracted. In contrast, the cold brew extraction method is extracted using cold water at room temperature for a long time.

Cold brew tea is mainly applied to coffee, but it can also be applied to other traditional teas such as green tea or black tea. As of 2016, the size of the coffee sales market was KRW 6.4 trillion, a 30.6% increase compared to 2014, and coffee shops have a significant impact on the growth of the coffee sales market. is rather gentle. As the growth rate of the overseas coffee bean market is rapidly increasing due to the increase in demand for high-quality coffee, and the growth rate of the coffee bean market is expected to exceed that of the instant coffee market, Starbucks launched cold brew coffee in 2017. More than 10 million cups were sold at Dunkin' Donuts, surpassing 1 million cups within two months of launch.

Cold brew coffee is easy to drink and is expected to continue to grow in the domestic and overseas beverage market due to its good preference for clean taste. It is a common situation in the industry to mainly use the night time zone. However, the existing cold brew production method extracts coffee in a drip method in a small glass bottle, so there is a fundamental limitation in that the production amount is small and the manufacturing time is excessive, so that it cannot meet the preferences of consumers. In addition, in the extraction apparatus such as a glass bottle and a dropper, a water clogging phenomenon occurs due to a change in the amount of water, and extraction is frequently stopped. also. During the dripping process, only a part of the coffee powder was extracted and the remaining part was excluded from extraction, so it was often not possible to obtain coffee with a uniform taste and aroma.

These technical problems lead to a decrease in the production of cold brew coffee, and are a factor in raising the price of cold brew, becoming an obstacle to making high-quality coffee for consumers. In addition to the technical limitations of the cold brew manufacturing system, cold brew coffee, unlike finished coffee products of beverage companies, has difficulties in storing it at room temperature, and there is a limitation in extending the shelf life due to quality changes during long-term storage even in refrigerated conditions.

In the related art, various techniques using a cold brew method have been proposed in relation to a coffee manufacturing method. For example, according to Patent Registration No. 10-1512564, it is mounted on the base and the upper end is open, a space for storing coffee is formed inside, and at least one outlet network for discharging the extracted undiluted solution is formed on the lower bottom surface. A technology has been proposed that includes a formed coffee tank and a nozzle installed on the top of the coffee tank and spraying water supplied from the outside into the coffee filled in the coffee tank in the form of a spray.

In addition, according to Patent Registration No. 10-1828858, a cooling tank for cooling by receiving water; an oxygen supply unit connected to the cooling tank and supplying oxygen to generate oxygen water in which the dissolved oxygen amount of water is increased; It is connected to the cooling tank and has a low pressure oxygen water discharge device that sprays oxygen water at a natural pressure or a low pressure, and the ground coffee powder is filled in the sealed inside, and powdered coffee is prevented from being discharged to the open lower part. Extraction tank through which the extracted stock solution is passed through; a storage tank connected to the lower portion of the extraction tank to store the extract stock solution; A high-concentration cold brew coffee mass extraction device is proposed, which is connected to the storage tank and consists of a vacuum unit that increases the extraction speed by applying vacuum pressure.

In addition, according to Patent No. 10-1943753, an extraction tank for extracting the extract from the input extraction target by receiving water; a storage tank capable of receiving and storing the extract solution from the extraction tank; and a pump capable of circulating the extract stored in the storage tank, wherein the extraction tank includes: a first cover part covering the extraction tank; a stirring unit provided under the first cover unit and capable of stirring the extraction target by a stirrer; and a first storage unit located under the stirring unit and capable of primarily storing the extract, wherein the first cover unit includes a plurality of first through holes, and among the plurality of first through holes. By using at least a part, a room temperature extraction device is proposed in which a pipe for nitrogen supply and a pipe for water supply are inserted.

This prior art may contribute in part to solving the problems of cold brew coffee extracted at room temperature, but it does not provide a fundamental solution that can ensure high quality and mass production and long-term storage to ensure room temperature distribution.

The present invention has been devised under the technical background described above, and an object of the present invention is to provide a system capable of mass-producing cold brew tea with excellent taste and aroma and uniform quality.

Another object of the present invention is to provide a method for producing cold brew tea with excellent flavor and solving the temporal/spatial productivity degradation of the existing drip extraction method.

Another object of the present invention is to provide a new cold brew tea extraction system so that cold brew tea can be produced in large quantities and can be distributed at room temperature and stored for a long time.

In addition, other objects and technical features of the present invention will be presented in more detail in the following detailed description.

In order to achieve the above object, the present invention is a frame in which an internal space in which a plurality of parts are disposed and a first nozzle for supplying sterilizing water for sterilization is disposed on the upper part, the frame is disposed inside the frame and is disposed at the top or inside An extraction tank equipped with a second nozzle for supplying sterile water for extraction and provided with a plurality of extraction holes through which the extraction liquid passes on the lower surface, a storage tank disposed below the extraction tank inside the frame and accommodating the extraction liquid generated in the extraction tank; A supply line for supplying sterilized water to the first and second nozzles, a control valve for selectively controlling the supply of sterilized water to the supply line, an ozone generator for generating ozone water by supplying ozone to water supplied from the outside, ozone It provides a non-heating sterilization cold brew tea manufacturing system comprising a sterile water storage tank for storing ozone water generated through a generator, and a pump for supplying sterile water to the supply line.

In the present invention, it is preferable that the bottom surface of the extraction tank is formed by dividing a first area in which the extraction liquid passage hole is disposed and a second area in which there is no passage hole, for example, For example, the bottom surface of the extraction tank may be formed such that a first region in which an extract passage hole is disposed is formed in the center, and a second region in which there is no passage hole is disposed outside the first region.

In addition, in the present invention, it is preferable that an ozone outlet is provided at the upper end of the sterilized water storage tank, and it is connected to the ozone outlet and further includes a filter for destroying the ozone.

In addition, external water supplied to the ozone generator may be delivered to the ozone generator through a water filter.

In the present invention, the extraction tank may be disposed in a stationary manner inside the frame, and the storage tank may be placed in a movable tray and disposed inside the frame.

The present invention also provides a frame on which a first nozzle for supplying sterilizing water for sterilization is disposed on the upper portion, a second nozzle disposed on the inside of the frame and equipped with a second nozzle for supplying sterile water for extraction at the upper end or inside, and on the lower surface of the extract solution An extraction tank having a plurality of extraction holes to pass through, a storage tank disposed below the extraction tank inside the frame and accommodating the extract generated in the extraction tank, and a supply line for supplying sterile water to the first and second nozzles and a control valve selectively controlling the supply of sterilized water to the supply line, and an ozone generator that provides ozone to water supplied from the outside to generate ozone water, and supplies the ozone water through a first nozzle to sterilize the entire system and supplying the ozone water through a second nozzle to extract the tea powder in the extraction tank at room temperature. The first process of changing the dry tea powder stored in the extraction tank to a wet state by repeatedly spraying and stopping the ozone water through the first nozzle, and repeating the spraying and stopping of the ozone water through the first nozzle to the extraction tank and a second process of obtaining a liquid tea extract from the tea powder maintained in a wet state, wherein ozone water injected into the extraction tank through the first nozzle is supplied at a flow rate of 0.1 to 1.0 ℓ/min. A method for preparing brew tea is provided.

In the present invention, the first process is sprayed through the first nozzle for 0.5 to 2 minutes, and the process of stopping for 1 to 5 minutes is repeatedly performed 2 to 10 times, and the second process is 0.5 to through the first nozzle It is preferable to repeatedly perform the process of spraying for 3 minutes and stopping for 1 to 5 minutes 50 to 200 times.

According to the present invention, it is possible to provide a cold brew tea manufacturing system fused with non-heating sterilization technology to meet consumer preferences and contribute to the expansion of the room temperature extraction beverage market.

In addition, the present invention prepares sterilized water using ozone and uses it to control microorganisms in the tea extraction space, while allowing the extracted tea to be stored at room temperature.

In particular, the present invention produces a large amount of high-quality tea in one continuous process controlled and designed from the viewpoint of food and microorganisms, can be distributed at room temperature for a long period without post-sterilization, and is the same by improving the existing production system that requires a large-scale space. It can be mass-produced 10 times or more compared to the area or space, thereby improving the economic feasibility of cold brew products.

As a result, it is expected that it will be possible to expand domestic and overseas sales channels by enhancing the quality competitiveness of cold brew products and securing unit price competitiveness, and to greatly contribute to the development of related industries.

1a and 1b are perspective views showing a cold brew tea manufacturing system of the present invention;
Figure 2 is a side view showing the cold brew tea manufacturing system of the present invention
3 is a schematic diagram showing the process of supplying ozone sterilized water in the cold brew tea manufacturing system of the present invention;
Figure 4 is a schematic view showing the sterilized water sprayed to the tea powder stored in the extraction tank
5a and 5b are perspective views showing the structure of the extraction tank;
6a and 6c are photos showing examples of over-extraction and non-extraction
7a and 7c are photos showing an example of the structure of the bottom of the extraction tank
8a and 8b are a plan view and a photograph showing a preferred embodiment of the bottom structure of the extraction tank;
9 is a perspective view showing a moving tray of the storage tank;
10 is a perspective view of a system including a plurality of extraction tanks;
11 is a schematic diagram showing a process of supplying ozone sterilized water in a condensate extraction tank system;

The present invention proposes a new cold brew tea manufacturing system and method capable of producing high-quality cold brew tea in large quantities, while using sterilized water by non-heating sterilization to distribute at room temperature for a long period of time.

There are two types of cold brew extraction method: a drip method, which is extracted by dropping a drop, and a leaching method, in which a whole container of coffee powder is placed in water and brewed. While expanding the drip area by supplying it, the flow of the extract water deposited on the tea powder and the retention time of the extract water in the extraction tank are controlled so that the flavor of the tea undiluted solution extracted in large quantities is not deteriorated.

The production of cold drip coffee is mostly made at room temperature for a long time of 8 to 10 hours, so it is not safe from microorganisms, so it is difficult to distribute it at room temperature. It is safe from contamination and it is also possible to monitor the extraction status in real time.

The cold brew tea manufacturing system of the present invention introduces a spray-type spraying method to prevent local over-extraction or non-extraction in the process of extracting cold brew tea in large quantities, while seeking standardization of the extraction process, and By controlling the retention time (flow rate) of the extraction water, it is possible to provide optimal extraction conditions. For this purpose, by adjusting the amount of extraction water and extraction time according to the type of tea powder to be extracted, while specializing the shape of the extraction tank, mass production is possible while expressing the original taste and aroma of tea.

Cold brew refers to a method of brewing a coffee extract from coffee powder for a long time with cold water (mainly room temperature water) or coffee brewed in that way. In the present invention, the extraction method in this way is defined as cold brew, It is used as a method applied to room temperature extraction of traditional tea using green tea, black tea, grain tea, various medicinal herbs, etc. including coffee, and tea prepared in this way is defined as cold brew tea. However, in order to facilitate understanding, in the embodiment of the present invention, the cold brew tea manufacturing process will be described by taking as an example room temperature extraction using roasted coffee powder.

The inventors of the present invention developed a system capable of manufacturing high-quality cold brew products by fusion of drip extraction technology improvement, extraction process improvement for quality control suitable for mass production, and non-heating sterilization technology.

1A, 1B, and 2 show the appearance and main components of the cold brew tea manufacturing system 100 of the present invention. A plurality of components are disposed in the frame 110 that divides the internal space while giving the external shape of the system. As shown, the frame is not only open-type, but also can be finished in a non-exposed form with a side wall coupled to the outside, and is preferably made of a corrosion-resistant metal so that corrosion does not occur even for internal sterilization by ozone water.

A first nozzle 112 for supplying sterilizing water for sterilization is disposed on the upper portion of the frame. Ozone water generated from an ozone generator to be described later is supplied to the first nozzle to periodically sterilize the inside of the system, thereby preventing the growth of microorganisms and maintaining the sterilization state of the entire system.

An extraction tank 120 for extracting tea powder and a storage tank 130 for storing the extract are vertically arranged inside the frame. The extraction tank is disposed between the first nozzle and the storage tank in the frame, and a second nozzle (see 122 in FIG. 4 ) for supplying sterile water for extraction is mounted on the top or inside of the extraction tank. The extraction tank has an internal space in which a large amount of tea powder can be contained, and a plurality of extraction holes through which the extract passes are formed on the lower surface. The extraction tank is preferably formed of corrosion-resistant metal to enable stable extraction of tea powder while maintaining sterility, and the shape and arrangement of extraction holes need to be controlled so that over-extraction or local non-extraction does not occur during the extraction process and this will be described later.

The storage tank is disposed under the extraction tank inside the frame and may further include a supply pipe connected to the bottom of the extraction tank to receive the extraction liquid generated in the extraction tank, and store the extract solution in a state of being disposed inside the frame and then easily remove it from the frame A separate moving means for discharging may be further provided.

An ozone generator 200 for generating ozone water by providing ozone to water (Win) supplied from the outside is mounted at an appropriate location of the system, for example, at the rear of the frame. Ozone used in the cold brew tea production system of the present invention It is preferable that the silver is air ozone generated at room temperature by blowing air by a microplasma generator. Microplasma, which is atmospheric pressure low-temperature plasma, is a plasma having a size of several tens to several thousand micrometers in diameter, and a high voltage is not required for plasma generation of the injected gas, and excellent cold plasma can be generated at less than about 2000V. . Therefore, there is no need for a large cooling device or a heat sink for heat dissipation, and the ozone generator is advantageous in lightening the system of the present invention as the device size is not large, eco-friendly sterilization is possible, energy consumption is low, and it is safe and suitable for extraction of cold brew tea at room temperature. Do.

The ozone water generated through the ozone generator is stored in the sterilized water storage tank 140 , and the sterilized water is supplied to each of the above-mentioned nozzles through the pump 150 .

In order to supply ozone sterilized water into the system sterilization and extraction tank, a supply line 160 extending from a sterilized water storage tank through a pump is disposed, and the supply line supplies sterilized water to the first and second nozzles. It is branched into the second supply line 162 and the first supply line 161, and at least one control valve 163, 164 for selectively controlling the supply of sterile water is connected to each supply line.

In the non-heating sterilization cold brew tea manufacturing system of the present invention, an ozone discharge unit 142 is provided at the upper end of the sterilized water storage tank, and a filter that is connected to the ozone discharge unit and destroys the ozone (see 220 in FIG. 3 ) ) is preferably further included.

In addition, although not shown, the system of the present invention is located at an appropriate position in the frame for integrated control of the sterilization process and extraction process through the control of the ozone generator, supply of external water, on/off selection of pumps and nozzles, and various valves. A control unit or a display can be mounted.

3 is a schematic diagram showing the process of supplying ozone sterilized water in the cold brew tea manufacturing system of the present invention. When external water is supplied through the inlet Win, it may go through the water filter 210 before being delivered to the ozone generator 200 . Ozone water (WO) is generated as the air ozone and water generated by the ozone generator are mixed, and the ozone water is primarily accommodated in the sterile water storage tank 140 . After that, if necessary, the first nozzle 112 and the second nozzle 122 of the extraction tank are selectively supplied (W1, W2). In order to supply ozone sterilized water to each nozzle, control valves 163 and 164 are disposed on the supply line to regulate the flow rate. Separately from the supply of ozone sterilized water, ozone (O3) separated from the ozone water in the sterilized water storage tank is discharged to the outside.

When microbial sterilization through heat sterilization process is performed for the distribution of cold brew coffee, the flavor of cold brew coffee changes and quality deteriorates. acts as On the other hand, in the non-heating sterilization cold brew tea manufacturing system of the present invention, CIP (Cleaning in Place) using ozone water and COP (Cleaning out of Place) using ozone water spray in all process steps such as before, during, and after extraction It is possible to implement a Semi-Aceptic system for cold brew tea similar to the filling method handled in an aseptic booth. As a result, from the viewpoint of food and microorganisms, it is possible to safely manufacture high-quality, extracted tea at room temperature in a single process, and long-term distribution at room temperature for more than one year without a post-sterilization process is possible.

4 schematically shows the sterilized water sprayed onto the tea powder P stored in the extraction tank 120 as a partially different configuration of the system structure of the present invention. In this embodiment, the second nozzle is disposed inside the extraction tank and includes a total of four nozzles, and the ozone sterilized water is uniformly sprayed onto the upper portion of the tea powder through the nozzle. Room temperature extraction of tea is carried out with ozone sterilized water supplied to the tea powder in the extraction tank, and the extraction liquid is discharged to the lower storage tank. In order to check the extraction liquid, a window 131 for visual identification may be installed in the extraction tank or the storage tank.

The present invention solves the difficulties in extraction using the existing cold brew facility by improving the drip extraction method and increasing the capacity of the extraction tank. By using a spray-type uniform spraying method through a plurality of nozzles, the extraction efficiency of cold brew coffee, etc. is increased, while over-extraction that occurs during drip extraction in a single glass container is prevented and a large amount of tea powder in the extraction tank is removed. Ensure sufficient retention time. As a result of implementing such a system, based on the 8 to 12 hours normally required to extract tea with room temperature water, the existing facility only obtained about 1 liter of extract, but in the case of the present invention, it is possible to obtain a large amount of extract of more than 60 liters. there has been This increase in extraction efficiency has resulted in at least a 10-fold increase in the production capacity with one system of the present invention for the area of 6 existing small-capacity room temperature extraction apparatuses, and is expected to contribute to improving the space efficiency of cold brew factories in the future. .

In the present invention, ozone sterilized water is sprayed on the tea powder in the extraction tank to proceed with the wetting process (soaking process) and the extraction process. It affects the quality of tea, and the injection method will be described later.

In addition, the internal structure of the extraction tank is important for the retention time and flow rate in the extraction tank of the ozone sterilized water sprayed on the tea powder. 5A and 5B are perspective views illustrating the structure of an extraction tank according to an embodiment, in which an extraction tank 120 having a substantially cylindrical structure is shown, a cover 121 is mounted on the upper end, and a plurality of through holes 121a are provided on the upper surface of the cover. is formed The through hole may be used, for example, as an inlet of the ozone sterilized water spray nozzle, and when the spray nozzle is mounted inside the extraction tank, only one through hole may be formed in the center of the cover of the extraction tank. In addition, for sealing, the extraction tank may be fixed by a separation latch so that the upper cover and the lower body are firmly coupled. A mounting handle 120a is mounted on the side of the brewing tank to facilitate movement of the brewing tank or mounting in the frame. A plurality of extraction holes 124 are formed in the lower portion of the extraction tank, the tea powder contained in the extraction tank is extracted at room temperature by ozone sterilized water, and the extract may be discharged to the outside of the extraction tank through the extraction holes.

The shape of the extraction tank itself, the number or size (diameter) of the extraction holes, and the arrangement shape of the extraction holes affect the extraction of tea powder at room temperature. In particular, the inventors of the present invention were was confirmed to be closely related.

In relation to high-quality extraction at room temperature, the size of the tea powder, the tamping condition of the tea powder, and the structure of the extraction tank act as factors that change the extraction amount, extraction rate, extraction concentration, etc. of tea, especially the pore size and pores of the lower surface of the extraction tank The arrangement of water and pores became a major factor in the flow rate or flow rate of the extract water. It was found that when the ozone sterilized water was maintained in the extraction tank for a long time and the tea powder was submerged for a long time, similar to the leaching method, the oil component in the tea extract increased and became thick like a chocolate lump, and the extraction efficiency was decreased. In addition, if the flow of ozone sterilized water was excessive and only some tea powders were extracted quickly, wetted parts were generated in the tea powder in the extraction tank, and the overall extraction efficiency was lowered. 6a to 6c show examples of over-extraction and non-extraction.

For this phenomenon, it was not sufficient to control the pressure of ozone sterilized water sprayed through the nozzle, and it was experimentally confirmed that it is more effective to change the structure of the extraction tank. 7a to 7c show an example of an extraction tank having a different bottom structure. In this way, the structure of the bottom of the extraction tank was differently modified and the extraction efficiency was compared to confirm a suitable structure related to the extraction efficiency.

In the present invention, it is preferable that the bottom surface of the extraction tank is formed by dividing a first area in which the extraction liquid passage hole is disposed and a second area in which there is no passage hole, for example, the bottom surface of the extraction tank has an extraction liquid passage hole in the center An arranged first region may be formed, and a second region having no through hole may be disposed outside the first region. 8A is a plan view showing a preferred embodiment of the extraction floor structure, in which there is an extract liquid passing part 124a including a plurality of extraction holes in the center, and an annular extract liquid non-passing part 124b having no extraction holes is disposed around it. you can see what happened 8B shows the shape of the bottom surface of the actually manufactured extraction tank.

In this way, the structure of the bottom surface of the extraction tank, in which the extraction liquid passing part and the extract liquid non-passing part are divided into regions, are properly maintained by maintaining the flow of ozone sterilized water involved in the extraction of tea powder at room temperature in the extraction tank and the retention time in the extraction tank. Over-extraction or local non-extraction was prevented. In the extraction tank bottom structure, in addition to disposing the passing part and the non-passing part in an annular structure, the bottom surface is divided into separate sectors according to the angle, and the passing part and the non-passing part are alternately arranged in each sector, or basically an annular arrangement In the structure, it can be variously changed by alternately arranging passing parts and non-passing parts with different extraction hole sizes.

Cold brew tea production system of the present invention. The ozone water is supplied through the first nozzle to sterilize the entire system, and the ozone water is supplied through the second nozzle to extract the tea powder in the extraction tank at room temperature. In such a system, in order to perform extraction at room temperature in large quantities while maintaining the quality of cold brew tea, it is necessary to repeatedly spray ozone water through the first nozzle and stop it, thereby changing the dry tea powder stored in the extraction tank to a wet state. It is preferable to proceed with the extraction process including the first step and the second step of obtaining a liquid tea extract from the tea powder maintained in a wet state in the extraction tank by repeating spraying and stopping the ozone water through the first nozzle.

In the non-heating sterilization cold brew tea manufacturing method of the present invention, the supply flow rate of ozone sterilized water supplied to the extraction tank by spraying is basically important, and the ozone water injected into the extraction tank through the first nozzle is 0.1 to 1.0 ℓ It is preferably supplied at a flow rate of /min. In addition, it is necessary to change the injection conditions and time of ozone sterilized water for each extraction process step to proceed with injection optimized for extraction of tea powder at room temperature. Specifically, in the first process, the process of spraying for 0.5 to 2 minutes through the first nozzle and stopping for 1 to 5 minutes is repeatedly performed 2 to 10 times, and the second process is 0.5 to 3 through the first nozzle The process of spraying for minutes and stopping for 1 to 5 minutes can be repeatedly performed 50 to 200 times. In this way, by appropriately controlling the injection method of the sterilized ozone water in the extraction process, it is possible to control the retention time of the sterilized ozone water in the extraction tank as well as to optimize the structure of the extraction tank as described above. Bulgogi can keep the flavor comparable to or better than the existing small-batch extraction method.

In the cold brew tea manufacturing system of the present invention, in order to improve process efficiency and operation, it is preferable that the extraction tank is mounted in a frame and the storage tank is placed in a movable tray and disposed inside the frame. 9 is a perspective view showing a tray 170 for movement of the storage tank 130, a wheel 171 for movement is mounted on the lower surface of the tray, and a movement handle 172 is mounted on one side of the tray. By using the tray, it is easy to load the storage tank in the frame of the system or discharge the storage tank after the extraction liquid storage is completed, and it is possible to reduce the labor intensity of the operator. If the transfer tray is not used, the transfer wheel may change the structure of the storage tank so that it is mounted on the lower part of the storage tank.

As described above, the cold brew tea production system of the present invention can achieve extraction efficiency 10 times or more compared to the existing small-volume extraction system in the form of a glass bottle, and has excellent space utilization, and furthermore, a plurality of extraction tanks with one ozone generator It is also suitable for implementing a complex system including 10 is a perspective view showing a system including a plurality of extraction tanks. It can be seen that a space is partitioned within one frame 110 so that the first extraction tank 120a and the second extraction tank 120b are arranged side by side. A storage tank may be separately disposed under each extraction tank, and a front panel 111 including a control unit or a display may be installed on the upper front surface of the frame.

Such a plurality of extraction tanks may receive ozone water from one ozone generator and separately perform the extraction process. 11 is a schematic diagram showing a process of supplying ozone sterilized water in a condensate extraction tank system.

External water is supplied through the inlet (Win) and passed through the water filter 210 to the ozone generator 200, the air ozone and water generated in the ozone generator are mixed, and ozone water (WO) is generated to store sterilized water It is stored in the tank 140 . The ozone sterilized water may be respectively accelerated by the first pump 150a and the second pump 150b and supplied to the respective extraction tanks 120a and 120b (W1a, W1b), and a first for the extraction space associated with each extraction tank. A control valve is disposed on each supply line to selectively supply ozone-sterilized water to the first nozzle and the second nozzle. Ozone (O3) separated from the ozone water in the sterile water storage tank may be discharged in a harmless state by passing through one filter 220 to destroy the ozone. Such a complex system is By including a plurality of components related to the extraction tank while having only one set of an ozone generator, a sterile water storage tank, etc., it is advantageous to expand the capacity of the entire system while reducing the space configuration of the system. In particular, it is effective to integrally monitor and control each extraction process.

The cold brew tea manufacturing system and room temperature extraction method of the present invention are suitable for mass production of room temperature extraction tea such as cold brew coffee, and quality standardization can be accelerated by improving the extraction process. In addition, by fusion of room temperature extraction technology and non-heating sterilization technology, microorganisms in the extraction space are controlled. By monitoring the temperature, sugar content, pH, etc. during coffee extraction, it is possible to predict the quality of coffee by monitoring whether coffee production is proceeding smoothly. In addition, it can be applied not only to cold brew coffee but also to the extraction of heat-sensitive teas or pharmaceuticals by changing conditions such as extraction time and temperature depending on the type of raw material.

In the above, the present invention has been exemplarily described through preferred embodiments, but the present invention is not limited to such specific embodiments and may take various forms within the scope of the technical idea presented in the present invention, specifically, the claims. may be modified, changed, or improved.

100: cold brew tea making system 110: frame
111: front panel 112: first nozzle
120: extraction tank 120a: mounting handle
121: cover 121a: through hole
122: second nozzle 124: extraction hole
124a: extract liquid passing part 124b: extract liquid non-passing part
130: storage tank 131: window
140: ozone water storage tank 150: supply pump
160: supply line 161: first supply line
162: second supply line 163, 164: control valve
170: tray 171: moving wheel
172: moving handle 200: ozone generator
210: water filter 220: ozone exhaust filter

Claims (5)

A frame in which an internal space in which a plurality of parts are disposed is provided and a first nozzle for supplying sterilizing water for sterilization is disposed on the upper part;
An extraction tank disposed inside the frame and equipped with a second nozzle for supplying sterile water for extraction at the top or inside, and having a plurality of extraction holes through which the extract passes on the lower surface;
a storage tank disposed under the extraction tank inside the frame and accommodating the extraction liquid generated in the extraction tank;
A supply line for supplying sterilized water to the first and second nozzles and a control valve for selectively controlling the supply of sterilized water to the supply line;
An ozone generator that generates ozone water by supplying ozone to water supplied from the outside;
A sterile water storage tank for storing the ozone water generated through the ozone generator, and
including a pump for supplying sterile water to the supply line
Unheated sterilized cold brew tea making system.
According to claim 1,
The bottom surface of the extraction tank is a non-heating sterilized cold brew tea manufacturing system, characterized in that the first area in which the extraction liquid passage hole is arranged and the second area without the passage hole are formed separately.
According to claim 1,
The brewing tank is installed in a stationary manner inside the frame, and the storage tank is placed on a movable tray and disposed inside the frame.
A frame in which the first nozzle for supplying sterilizing water for sterilization is disposed on the upper part;
An extraction tank disposed inside the frame and equipped with a second nozzle for supplying sterile water for extraction at the top or inside, and having a plurality of extraction holes through which the extract passes on the lower surface;
a storage tank disposed under the extraction tank inside the frame and accommodating the extraction liquid generated in the extraction tank;
A supply line for supplying sterilized water to the first and second nozzles and a control valve for selectively controlling the supply of sterilized water to the supply line;
It includes an ozone generator that generates ozone water by providing ozone to water supplied from the outside,
A cold brew tea manufacturing system for sterilizing the entire system by supplying the ozone water through a first nozzle and extracting the tea powder in the extraction tank at room temperature by supplying the ozone water through a second nozzle.
A first step of changing the dry tea powder stored in the extraction tank to a wet state by repeating spraying and stopping the ozone water through the first nozzle;
a second process of obtaining a liquid tea extract from the tea powder maintained in a wet state in the extraction tank by repeating spraying and stopping the ozone water through the first nozzle,
The ozone water injected into the extraction tank through the first nozzle is supplied at a flow rate of 0.1 to 1.0 ℓ/min.
How to make unheated sterilized cold brew tea.
5. The method of claim 4,
The first process is sprayed through the first nozzle for 0.5 to 2 minutes, and the process of stopping for 1 to 5 minutes is repeatedly performed 2 to 10 times, the second process is sprayed through the first nozzle for 0.5 to 3 minutes, A method of manufacturing unheated sterilized cold brew tea, characterized in that the process of stopping for 1 to 5 minutes is repeatedly performed 50 to 200 times.

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