TWI697308B - Extraction device and extracting method - Google Patents

Abstract

The disclosure relates to an extraction device configured for a mixture of a liquid and raw ingredients. The extraction device includes a first container, a second container, a liquid channel, a valve and an air suction device. The second container is configured to contain the mixture. The liquid channel is connected to the second container and the first container. The valve is disposed on the liquid channel. The air suction device is connected to the first container in order to suck air in the first container so as to decrease an internal pressure of the first container to a predetermined valve. When the internal pressure of the first container reaches the predetermined valve, the valve is opened to let the liquid in the second container to flow into the first container via the liquid channel, thereby forcing the extracts of the raw ingredients to flow out with the liquid. In addition, the disclosure also relates to an extracting method.

Description

Extraction device and extraction method

The present invention relates to an extraction device and an extraction method, in particular to an extraction device and an extraction method having a valve body and an air extraction device.

With the continuous improvement of living standards, coffee is no longer just a refreshing drink, but is further regarded as a manifestation of lifestyle. This trend tends to make coffee more popular, and various types and production methods of coffee also have a vast consumer market.

For example, cold brew coffee, also known as "ice brewed coffee", has been loved by more and more consumers in recent years because it reflects the unique flavor of coffee. Traditionally, cold brew coffee is made by steeping coffee powder in water at a relatively low temperature (for example, room temperature or lower) for a long time, so that the fragrant substances in the tiny pores of the coffee powder gradually dissolve into the water.

However, the soaking time needs at least 12~24 hours, and the production time is long. Therefore, it needs to be prepared in advance and cannot be consumed immediately. For modern people whose lives are getting faster and faster, traditional production methods are troublesome and inconvenient, and the process is Zhongdu needs to keep it refrigerated, which not only takes up a large amount of storage space in the refrigerator, but also increases electricity costs accordingly. For stores selling cold brew coffee, although cold brew coffee stocks have been pre-made to supply sales demand, there are often situations where the stock is insufficient to meet consumer demand, or the stock is too much and the coffee needs to be discarded. In addition, if coffee is soaked in water for a long time, it is easy to dissolve too much bad impurities in the coffee powder and affect the coffee flavor.

In view of this, the present invention provides an extraction device and an extraction method, whereby beverages such as coffee can be extracted in a more convenient, fast and high-quality manner.

According to an embodiment of the present invention, an extraction device is disclosed for a mixture, and the mixture includes a liquid and a raw material. The extraction device includes a first storage tank body, a second storage tank body, a valve body and an air extraction device. The second storage tank is used for storing the mixture. The valve body is connected between the second storage tank body and the first storage tank body. The air pumping device is connected to the first storage tank body for extracting gas in the first storage tank body so as to reduce the internal pressure of the first storage tank body to a predetermined pressure value. When the internal pressure of the first storage tank reaches a predetermined pressure value, the valve body opens.

According to an embodiment of the present invention, an extraction method is disclosed for an extraction device. The extraction device includes a first storage tank and a valve body. The valve body is connected to the first storage tank. The extraction method includes: The storage tank performs a pressure reduction procedure; it is determined whether the internal pressure of the first storage tank is less than or equal to a predetermined pressure value; when the internal pressure of the first storage tank is determined to be less than or equal to the predetermined pressure value, the valve body is opened ; And when the internal pressure of the first storage tank is determined to be greater than the predetermined pressure value, continue to perform the pressure reduction procedure on the first storage tank.

According to the extraction device and extraction method disclosed in the foregoing embodiments of the present invention, the gas extraction device can extract gas from the first storage tank first, so that the internal pressure of the first storage tank first drops to a predetermined pressure value before the The valve body is opened, so that the first storage tank body and the second storage tank body can generate a sufficient pressure difference due to the negative pressure, so that the extract in the raw material body can be driven by the pressure difference to be quickly extracted and combined Flow into the first storage tank body, after experiments, such a negative pressure extraction procedure can extract the extract in the raw material body in a short time.

For example, when applied to cold brew coffee, a sufficient pressure difference generated by the negative pressure can force and accelerate the fragrant substances (ie extracts) in the tiny pores of the coffee powder (ie the raw material) in a short time Was extracted.

Compared with the traditional cold extraction method that waits for a long time for the aromatic substances to diffuse naturally from the pores of the coffee powder and dissolve into the water, the extraction device of the present invention can greatly reduce the extraction time, even to only a few minutes, so as to realize immediate consumption There is no need to make a large amount of inventory in advance, save the space of the refrigerator, and reduce the cost of electricity for making. Moreover, because the coffee powder is in contact with water for a short time, it can also greatly reduce impurities that dissolve into the water due to too long soaking time And affect the probability of flavor.

The above description of the disclosure of the present invention and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient to enable anyone familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of patent application and drawings In this way, anyone who is familiar with the relevant art can easily understand the purpose and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention by any viewpoint.

In addition, the embodiments of the present invention will be disclosed in the following drawings. For clear description, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the present invention.

In addition, in the drawings in this case, some conventional structures and components may be drawn in a simple schematic manner to keep the drawing surface tidy. In addition, some of the features in the drawings of this case may be slightly enlarged or their scales or dimensions may be changed to facilitate the understanding of the technical features of the present invention. However, this is not intended to limit the present invention, and is based on the content disclosed in the present invention. The actual size and specifications of the manufactured product should be adjusted according to the requirements during production, the characteristics of the product itself, and the content disclosed below in conjunction with the present invention, which is stated here.

In addition, the following terms may use terms such as "部", "part" or "location" to describe specific elements and structures or specific technical features on or between them, but these elements and structures are not affected by these terms. limit. And, in the following, terms such as "substantially", "substantially" or "about" may also be used. When used in combination with a range of size, concentration, temperature, or other physical or chemical properties or characteristics, it is intended to cover possible Deviations existing in the upper and/or lower limits of the range of these properties or characteristics may indicate allowable manufacturing tolerances or acceptable deviations caused by the analysis process, but still achieve the desired effect.

Furthermore, unless otherwise defined, all words used in this article, including technical and scientific terms, have their usual meanings, and their meanings can be understood by those familiar with this technical field. Furthermore, the above-mentioned definitions of vocabulary should be interpreted in this specification as having the same meaning as in the technical field related to the present invention. Unless there is a clear definition, these words will not be interpreted as overly ideal or formal meaning.

First of all, please refer to Figures 1 to 4. Figure 1 is a three-dimensional schematic diagram of an extraction device according to an embodiment of the present invention, Figures 2 to 3 are exploded schematic views of the extraction device in Figure 1 from different perspectives, and Figure 4 is Fig. 1 is a partial schematic diagram of the interior of the extraction device.

This embodiment proposes an extraction device 1a, which can be used for a mixture, and the mixture can be a liquid and a raw material that are uniformly or heterogeneously mixed. The liquid described here can be, but not limited to, water or other liquid-type substances. Further, the liquid described herein can be, but not limited to, an edible liquid substance; and the raw material can be, but not limited to, Coffee powder or other infusible beverage raw material solids, therefore, the raw material body is not limited to raw material solids such as granules or flakes, such as tea leaves. Furthermore, the raw material body is not limited to being in solid or liquid form, and is not limited to being insoluble or soluble in the aforementioned liquid. In addition, the ratio of the liquid to the raw material in the aforementioned mixture is not limited. Furthermore, the liquid can be, but not limited to, mixed with one or more of the same or different raw materials. That is to say, the present invention is not limited to the type, quantity, form and ratio of the liquid and the raw material, and the mixture can be, but not limited to, the coexistence of liquid and solid or solution. In this embodiment and other embodiments, the extraction device 1a, for example, but not limited to, can be used to extract (extraction) the extract of the raw material mixed in the liquid (none of which is shown), which can be used to extract the raw material in the aforementioned mixture. The extract, but the present invention is not limited to the composition of the extract in the raw material.

In order to understand the connotation of the present invention, the following will take cold brew coffee (or called ice brew coffee or ice brew coffee) as an example. Therefore, in the following paragraphs, according to the raw materials required in the general cold brew coffee production process, liquid It can be referred to as "water" for short. The raw material is coffee powder in solid form, so it can be referred to as "coffee powder". The mixture of water and coffee powder can be referred to as "powder water" for short. The fragrance extracted from the pores of coffee powder Substances can be referred to as "extracts" or "aromatic substances" for short, and the mixed solution of water and coffee extracts is "cold brew coffee", which is stated here.

It is added that the process of immersing coffee powder in water to form powder water can be called Wetting, which is the physical reaction process of coffee powder absorbing water, during which some volatile compounds in the pores of coffee powder can be made , The gas substance is replaced by water, and some of the gas substance is dissolved in the water, and the appearance of the coffee powder can be observed from the naked eye. In addition, the aforementioned "extraction" of coffee refers to the process in which gas and volatile substances are dissolved in water when the coffee powder is soaked, and the soluble substances are also pulled out of the coffee powder. During this process, the soluble substances in the pores of the coffee powder can leave the coffee powder through different forms of chemical reactions, including dissolution, hydrolysis, diffusion, etc. These processes are not sequential or occur only once. Usually these processes It can be repeated to increase the coffee extraction rate. Low (under-extraction) or high (over-extraction) will show different characteristics in perception. For example, for some coffee beans, under-extraction may cause flavor bias. Sour and over-extraction may make the flavor bitter and astringent, but the present invention is not limited to this.

In addition, the size, density, shape and distribution of coffee powder, the way of adding water, and any power added before and after the soaking process will also affect the soaking speed and extraction rate, but the present invention is not limited to this, and Please describe the part of the additional power applied later.

It should also be stated first that the size, quantity, shape and type of the aforementioned coffee extracts will vary with the type of coffee powder, and the present invention is not limited to this, and in the present invention, the types of coffee powder and water Or amount, the mixing ratio of coffee powder and water in the powder water, the extraction rate of the extract, and the concentration of the extract or coffee in the cold brew coffee are also not limited, and in order to keep the diagram simple to facilitate the description of the present invention, The drawings of the present invention do not show coffee powder, water and mixtures thereof, coffee powder extracts or mixed solutions of extracts and water.

In this embodiment, the extraction device 1a may at least include a first storage tank body 10a, a second storage tank body 20, a valve body 30, a liquid channel 40, an air extraction device 50, and an air extraction channel 60. The first storage tank 10a is, for example, used to collect and store cold brewed coffee (not shown) after mixing water and coffee powder extract. Therefore, the first storage tank 10a in the following embodiment is, for example, a "coffee maker". The form of "" may also be called "coffee maker", but the present invention is not limited to this. The second storage tank body 20 can be, for example, a tank body that can be used for a mixture of liquid and raw material. Since the following is an example of cold brew coffee, the second storage tank body 20 in the following embodiments is for example to store coffee powder and water The mixed powder water.

The liquid channel 40 is a liquid pipeline connected between the second storage tank body 20 and the first storage tank body 10a for allowing the powder water in the second storage tank body 20 to flow into the first storage tank body 10a. It is not limited to being constituted by one or more flow tubes (not labeled), and the present invention is not limited to this. In this embodiment or other embodiments, no matter the type, number or connection of the flow pipes, as long as it is a structure that allows powder water to circulate between the second storage tank body 20 and the first storage tank body 10a, it can be seen It is the liquid channel of the present invention. In this embodiment or other embodiments, the two ports of the liquid channel 40 may be provided with, but not limited to, anti-leakage joints (not labeled).

The valve body 30 is arranged on the liquid passage 40. When the valve body 30 is closed, it can be used to stop the powder water in the liquid passage 40, thereby preventing the powder water flowing out of the second storage tank body 20 from flowing into the first storage tank body 10a , And when the valve body 30 is opened, the powder water can flow into the first storage tank body 10a. However, the present invention is not limited to the type of valve body 30. In addition, in this embodiment or other embodiments, a driving motor (not labeled) may be additionally provided on the valve body 30 to control the opening and closing of the valve body 30, but the invention is not limited to this. In addition, it is supplemented that the liquid channel 40 can be optional. In other embodiments, the extraction device can also omit the aforementioned liquid channel. In this case, the valve body can be directly connected to the second storage tank body and The design between the first storage tanks, but the present invention is not limited to this or its related changes.

The air extraction channel 60 is a gas pipeline connected between the air extraction device 50 and the first storage tank 10a, which can be, but is not limited to, constituted by one or more air pipes (not labeled). The present invention is not based on this limit. In this embodiment or other embodiments, no matter the type, number or connection of the air pipes, as long as it is a structure that allows gas to flow out of the first storage tank 10a and flow to the air extraction device 50, it can be regarded as the present invention Exhaust channel. In this embodiment or other embodiments, the two ports of the air suction channel 60 can be provided with but not limited to anti-leakage joints (not labeled). The suction device 50 can be used to suck the air in the suction passage 60, thereby sucking the air in the first storage tank 10a through the suction passage 60, so that the internal pressure of the first storage tank 10a drops to form a negative pressure, but the present invention is not It is limited by the type of the suction device 50 and its suction capacity. In addition, it is supplemented that the air extraction channel 60 can also be optional. In other embodiments, the extraction device can also omit the aforementioned air extraction channel. In this case, the extraction device can be directly connected to the first storage tank instead. The design of body connection, but the present invention is not limited to this or its related changes.

In this embodiment and other embodiments, the air extraction device 50 can extract the gas in the first storage tank 10a to reduce the internal pressure of the first storage tank 10a to a predetermined pressure value. The process in which the gas in the tank body 10a gradually decreases the internal pressure of the first storage tank body 10a can be called a depressurization process, and the predetermined pressure mentioned here is, for example, a pressure lower than the internal pressure of the second storage tank body 20. Pressure value, but the present invention does not use the pressure reduction rate or execution time of the pressure reduction program, the internal pressure value of the first storage tank body 10a and the second storage tank body 20, the value of the predetermined pressure value or the predetermined pressure value and the second storage The difference in the internal pressure of the tank body 20 is limited, and here, the present invention is not limited to how to detect the predetermined pressure value. For example, it can be, but not limited to, the air extraction device 50 or the air extraction device. This is achieved by installing pressure sensing elements (not shown) on the connected pipes.

When the internal pressure of the first storage tank body 10a reaches the predetermined pressure value, it means that the internal pressure of the first storage tank body 10a reaches less than or equal to the predetermined pressure value, which means that the first storage tank body 10a and the second storage tank body 10a The internal pressure difference between the storage tanks 20 meets the requirements of the current extraction. At this time, the valve body 30 is opened so that the water in the second storage tank 20 starts to flow into the first storage tank 10a through the liquid channel 40. As a result, the extract in the pores of the coffee powder is sucked out along with the flow of water, and then flows into the first storage tank 10a through the liquid channel 40 together with the water to become cold brew coffee. In detail, since the internal pressure of the first storage tank body 10a drops to less than or equal to the predetermined pressure value, a certain degree of pressure difference is formed between the first storage tank body 10a and the second storage tank body 20, so that the The fragrant substances (ie extracts) in the pores are forced to be extracted within time, and flow into the first storage tank body 10a through the liquid channel 40 along with the water. The aforementioned process of driving the extract and water into the first storage tank 10a through the pressure difference can be referred to as a negative pressure extraction process. It should be explained that the predetermined pressure value and its use in the first storage tank are different according to different requirements. The pressure difference generated between the body 10a and the second storage tank body 20 (that is, the demand for the pressure difference between the first storage tank body and the second storage tank body in the current extraction) is not limited, and the aforementioned The time of the negative pressure extraction procedure is not limited.

According to the experimental test results, at room temperature (about 20 degrees), the extraction device 1a of this embodiment performs cold extraction on 20 grams of coffee powder and 200 ml of water under a predetermined pressure of -150 torr. As a result, the time of the negative pressure extraction procedure only needs about 30 seconds to complete.

Compared with the traditional cold extraction method that waits for a long time for aromatic substances to diffuse naturally from the pores of the coffee powder into the water, the extraction device 1a of this embodiment can greatly shorten the extraction time from 12 to 24 hours to only about a few minutes. Realize the advantages of immediate consumption without the need to make a large amount of inventory in advance, save the space of the refrigerator, and reduce the cost of electricity for making, and because the contact time of coffee powder and water is short, it can also greatly reduce impurities due to too long soaking time. The probability of dissolving into water and affecting the flavor. In addition, due to the short extraction time, the ratio of coffee powder to water (which can be referred to as the powder-water ratio) used in the extraction device 1a of this embodiment can be about 1:10~1 under the premise of producing the same extraction rate: 12. However, compared with the traditional cold extraction method that uses long-term steeping of coffee, the ratio of powder to water is 1:4~1:12. Therefore, the amount of coffee powder required by the extraction device 1a is lower. Moreover, since the extraction time required by the cold extraction method of this embodiment is short, the caffeine concentration of the cold brew coffee extracted by the extraction device 1a of this embodiment is also relatively low.

On the other hand, in order to completely seal the first storage tank body 10a and facilitate the negative pressure extraction procedure inside the first storage tank body 10a, the following will continue to introduce how to seal the first storage tank body 10a to form the inside. The way to completely seal the space.

Please refer to FIGS. 1 to 4 again. In this embodiment, the extraction device 1a further includes a sealing member 70a, a stirring assembly 80, and a housing 100a. The casing 100a may include a main casing portion 101a, a connecting casing portion 102a, and a carrier plate 103a.

The aforementioned valve body 30, air extraction device 50, part of the liquid channel 40, and part of the air extraction channel 60 can all be accommodated in the main housing portion 101a. In addition, in this embodiment or other embodiments, a control center (not shown) may be contained in the main housing portion 101a, which may include electronic components such as a circuit board, a processor, and a circuit, which can be used to control the valve body 30. Other electronic components or electrical devices on the extraction device 1a, such as the air extraction device 50, or feedback their information to the user. In addition, the main housing 101a can be provided with an on-off key for the user to press to activate the entire device, and an extraction start key (none of which is labeled) can be provided for the user to press to start the extraction. program. It is supplemented that the present invention is not limited to the material, structure, appearance, etc. of the host casing 101a, as long as the aforementioned components can be assembled and fixed, the design can be adjusted according to actual needs.

The connecting shell portion 102a can be, but not limited to, detachably connected to one side of the main shell portion 101a, and the other part of the liquid channel 40 and the other part of the suction channel 60 pass through the main shell portion 101a to be accommodated. In the connecting shell 102a. The second storage tank body 20 is detachably disposed on the connecting shell portion 102a, and the connecting shell portion 102a is provided with a hole 1021 on one side facing the second storage tank body 20, which can be used for connecting one end of the liquid channel 40 to the second storage tank. The outlet connector 21 of the tank body 20. Thereby, as shown in FIGS. 3 to 4, when the second storage tank body 20 is disposed on the connecting shell portion 102a, the liquid outlet joint 21 is connected to one end of the liquid channel 40 at the hole 1021, so that the second storage tank body 20 The powder and water inside can enter the liquid channel 40.

The carrier plate 103a can be, but not limited to, detachably connected to the main casing 101a, and is located on the same side of the main casing 101a as the connecting casing 102a, but is located below the connecting casing 102a and is connected to the connecting casing. The part 102a keeps a distance. In other words, the connecting shell portion 102a is located on the carrier plate 103a and keeps a distance from the carrier plate 103a. The first storage tank body 10a is suitable to be placed on the carrier plate 103a and is located between the connecting shell portion 102a and the carrier plate 103a, that is, the distance between the connecting shell portion 102a and the carrier plate 103a can be based on the first storage groove The size of the body 10a is adjusted, and the present invention is not limited to this.

From a further point of view, the carrier plate 103a has a first guiding structure 1031 on the surface facing the connecting shell portion 102a, and the bottom surface of the first storage tank body 10a has a second guiding structure 11a. In this embodiment or other implementations In an example, the first guiding structure 1031 is, for example, a protrusion, and the second guiding structure 11a is, for example, a groove, and the extending direction of the protrusion and the groove is substantially parallel to the mounting direction of the first storage tank body 10a. The direction is set (as shown in the auxiliary dotted line next to the first storage tank in FIG. 2), but the present invention is not limited to the first guiding structure 1031 and the second guiding structure 11a, and their shapes or forms.

When the first storage tank 10a is placed on the tray 103a, the second guide structure 11a is detachably or slidably disposed on the first guide structure 1031, so that the first storage tank 10a is guided Lead to a ready position. The so-called preparation position, as shown in FIG. 1, refers to the position when the first storage tank 10a is set to start cold extraction.

In this embodiment, the sealing member 70a is movably fixed on the housing 100a, for example, the connecting shell portion 102a of the housing 100a is movably fixed to the side of the carrier plate 103a. The sealing member 70a can be used to cover and close the opening O of the first storage tank 10a when the first storage tank 10a is placed in the preparation position. Moreover, in this embodiment, the sealing member 70a has a liquid outlet 71 and an air suction opening 72, which are respectively connected to the aforementioned liquid channel 40 and the air suction channel 60. Therefore, the liquid channel 40 can discharge the solution of water and extract from the liquid outlet 71 of the sealing member 70a, and the suction channel 60 can form a suction airflow from the suction port 72 to extract air.

It can be seen that, from the perspective of the liquid channel 40, the powder and water in the second storage tank body 20 can flow into one end of the liquid channel 40 from the liquid outlet connector 21 located in the hole 1021 of the connecting shell 102a. If the valve body 30 is Turn on, the powder water can flow to the other end of the liquid channel 40 as the liquid channel 40 flows through the valve body 30, so that it can then enter the liquid outlet 71 on the sealing member 70a and be discharged from the opening of the first storage tank body 10a. O flows into the first storage tank body 10a. On the other hand, from the perspective of the suction passage 60, the suction device 50 can suck the suction passage 60 from one end of the suction passage 60 to generate a suction airflow, so that the other end of the suction passage 60 is the sealing member The air suction port 72 of the 70a generates a suction airflow to extract the air inside the first storage tank 10a through the opening O of the first storage tank 10a.

The stirring assembly 80 is detachably fixed on the second storage tank body 20, and the second storage tank body 20 can be assembled on the housing 100a through the stirring assembly housing 800 of the stirring assembly 80 at the same time, for example, assembled on the housing The top side of the main housing portion 101a of 100a. Please refer to FIG. 5, which is a schematic side sectional view of the extraction device 1a. In this embodiment or other embodiments, the stirring assembly 80 may further include a stirring member 810, a transmission member 820, and a driving motor 830. The driving motor 830 can be installed in the main housing 101a, and is electrically connected to the control center to be controlled by the control center. The stirring member 810 is detachably fixed on the stirring assembly 80. When the stirring assembly 80 is fixed on the second storage tank body 20, the stirring member 810 is movably located in the second storage tank body 20. The stirring member 810 is, for example, a piece of The shape structure extends downward from the opening of the second storage tank body 20 to the bottom of the second storage tank body 20. The transmission member 820 is located in the stirring assembly 80, and one end of the transmission member 820 is connected to the stirring member 810, and the other end is connected to the driving motor 830, so that it can be linked between the stirring member 810 and the driving motor 830 to increase the power of the driving motor 830. It is transmitted to the stirring member 810, so that the stirring member 810 can rotate at a specific speed in the second storage tank body 20. Specifically, the stirring member 810 can perform, for example, on the center line of the second storage tank body 20 (not shown) The revolving movement can also be said that the stirring member 810 can rotate around the center line of the second storage tank body 20, and its purpose is to agitate the powder water in the second storage tank body 20. However, it is reminded that the present invention is not limited to the shape and number of the stirring member 810 and the speed at which it revolves.

In addition, as shown in the figure, the second storage tank body 20 can also be provided with a filter structure 22, which can be used to filter coffee powder to prevent the coffee powder from entering the liquid channel 40, thereby preventing coffee powder from entering the first storage tank. The appearance can be, but is not limited to, similar to an inverted T shape, presenting a structure with a flat outer periphery but an upwardly extending and protruding center at the center. The protruding structure is, for example, convenient for the user to grab and take it out of the second storage tank 20. The contact surface between the bottom of the filter structure 22 and the second storage tank body 20 can be made of a soft material such as silicone or rubber. Its softness and elasticity are used to ensure that the filter structure 22 is installed in the second storage tank body 20 and the second storage tank. The inner edge of the storage tank body 20 is completely tight to prevent coffee powder from entering the liquid channel 40 from the gap. However, the present invention is not limited to the structure of the filter structure 22, and the structure of the filter structure 22 extending upward is not limited to being located at its center. As shown in the figure, the stirring member 810 can also be generally regarded as revolving with the protruding structure of the filtering structure 22 as the center of rotation.

In addition, the present invention is not limited to the structure and design of the stirring assembly 80. For example, in other embodiments, the stirring assembly can omit the drive motor and change from the aforementioned automatic assembly to a manual assembly. In this case, the transmission member It can be changed to a structure extending from the stirring member to the outside for the user to grasp and operate, so that the user can rotate the stirring member by grasping and rotating the transmission member.

In addition, in this embodiment or other embodiments, the extraction device 1a may also include a positioning detector D and a positioning detector D', which can be but not limited to a pressure switch. The positioning detector D is arranged on the surface of one side of the main casing portion 101a of the casing 100a and slightly protrudes outward, and is located between the connecting casing portion 102a and the carrier plate 103a. When the first storage tank body 10a is located in the preparation In the position, one side of the first storage tank 10a can press the positioning detector D. At this time, the positioning detector D can send a signal to the control center so that the control center can determine whether the first storage tank 10a is ready. Positioning. The positioning detector D'is also arranged on the main casing portion 101a of the casing 100a, and is located on the same side of the main casing portion 101a as the positioning detector D, but on the connecting casing portion 102a, when the second When the storage tank body 20 is assembled to the connecting shell 102a, one side of the second storage tank body 20 can press against the positioning detector D'. At this time, the positioning detector D'can send a signal to the control center to control The center determines whether the second storage tank 20 has been positioned. It is supplemented that when the control finger center does not receive the signals from the positioning detector D and the positioning detector D'that the first storage tank body 10a and the second storage tank body 20 are installed and positioned, it will pass through the housing 100a To remind users.

But it should be stated that the present invention is not limited to the design or type of the positioning detector D and the positioning detector D'. For example, in other embodiments, the positioning detector can also be changed to a non-contact detection. The detector, for example, is a light sensor detector using laser or infrared rays. In this case, when the first storage tank 10a and the second storage tank 20 are positioned, that is, the first storage tank 10a and the second storage tank When the storage tank body 20 is located at a specific position, the positioning detector can be triggered to realize the function of determining whether the positioning is located, and there is no need to directly touch or press the detector.

Next, please refer to FIGS. 6A to 6B in conjunction with FIG. 5 to see a partial enlarged schematic side sectional view of the position of the sealing member 70a of the extraction device 1a being switched. In this embodiment, the housing 100a further includes an actuating key 104 disposed on the connecting shell portion 102a and exposed on the surface of the connecting shell portion 102a. In addition, the extraction device 1a further includes an elastic member 91 and an elastic member 92. The elastic member 91 is disposed in the connecting shell portion 102a and sandwiched between the actuating key 104 and the connecting shell 102a, thereby driving the actuating key 104 to Move away from the connecting shell portion 102a; the elastic member 92 is provided in the connecting shell portion 102a and sandwiched between the sealing member 70a and the connecting shell portion 102a, thereby driving the sealing member 70a to move away from the connecting shell portion 102a ( For example, the sealing member 70a is driven to move in the direction of the tray 103a).

In detail, the actuating key 104 has a pressing inclined surface 1041, and the sealing member 70a has a pressed inclined surface 701, which can be pressed by the pressing inclined surface 1041. When the actuating key 104 is pushed by an external force, it moves toward the connecting shell portion. When 102a moves inside, the actuating key 104 can squeeze the elastic member 91, and use the pushing inclined surface 1041 to push against the pressure inclined surface 701 of the sealing member 70a. Since the pushing inclined surface 1041 and the pressure inclined surface 701 are in contact with each other, The force against the actuation key 104 generates a component force that lifts the sealing member 70a upward, so that the sealing member 70a squeezes the elastic member 92 upward, and rises from the lowered position (as shown in FIG. 6A) to the raised position (as shown in FIG. 6B) to expose Out of the opening O of the first storage tank 10a. It is understandable that when the external force applied to the actuation key 104 is cancelled, the elastic potential energy accumulated by the elastic element 91 can drive the actuation key 104 to reset, and the elastic potential energy accumulated by the elastic element 92 can drive the sealing member 70a to return. The lowered position covers and closes the opening O of the first storage tank 10a. At that time, the liquid outlet 71 and the suction port 72 of the aforementioned sealing member 70a only communicate with the inner space of the first storage tank 10a but not with the extraction device 1a The outside world is connected. It is supplemented that in order to enhance the sealing effect of the sealing member 70a on the first storage tank body 10a, the sealing member 70a may be made of a soft material such as silicone or rubber, and its softness and elasticity are used to reliably seal the first storage tank.体10a.

As can be seen from the foregoing description, in the step of using the extraction device 1a, the user can, for example, first press the actuation key 104 to lift the sealing member 70a so that the first storage tank 10a can follow the first guiding structure 1031 and The second guiding structure 11a is guided to the ready position to reduce the error rate in operation. At that time, the positioning detector D can be touched by the first storage tank 10a to inform the extraction device 1a of the first storage tank 10a It is already positioned, and the user can release the actuating key 104 to allow the sealing member 70a to descend and reset to automatically seal the first storage tank body 10a, and then the second storage tank body 20 can be assembled on the housing 100a, Next, the stirring assembly 80 is assembled on the housing 100a to close the liquid passage (including the internal space of the second storage tank 20, the liquid channel 40, the internal space of the first storage tank 10a, etc.) and the circulating gas in the extraction device 1a. (Including the internal space of the second storage tank body 20, the air extraction device 50, the air extraction channel 60, the internal space of the first storage tank body 10a, etc.). It can be seen that the user only needs a simple operation process to complete the preparation work before the extraction procedure, and the operation is convenient and the error rate is low.

Here, the operation flow is specifically as follows: the user can first press the switch key to activate the extraction device 1a; and then use the aforementioned first guiding structure 1031 and second guiding structure 11a to store the first The tank body 10a is guided and positioned so that the first storage tank body 10a is sealed and covered by the sealing member 70a, and the second storage tank body 20 is placed in position. Here, the positioning detectors D and D'can automatically determine the first Whether the storage tank body 10a and the second storage tank body 20 are positioned, that is, confirm whether the first storage tank body 10a is sealed; then, put the filter structure 22 (as shown in FIG. 5) into the second storage tank body 20 and add the raw material body ( Such as coffee powder) and liquid (such as water); then a stirring assembly 80 can be installed on the second storage tank body 20 to extend its stirring member 810 (as shown in FIG. 5) into the second storage tank body 20 to at least partially insert the liquid and In the mixture of raw materials, the pre-operation of the cold extraction process (that is, the preparation before the negative pressure extraction process) will be completed by then.

Then, the user can touch the extraction start button to make the extraction device 1a execute the extraction process, please match the aforementioned figure and FIG. 7. FIG. 7 is a flowchart of the extraction method of the present invention. First, step S01, detect the second The storage tank 20 stores the mixture. Specifically, in step S01, a sensor (not shown) in or on the second storage tank 20 can be used to detect whether the second storage tank 20 stores the aforementioned liquid The mixture with the raw material, or to further detect whether the second storage tank 20 stores a sufficient amount of the mixture, the result can also be used as one of the judgment basis for the completion of the preceding cold extraction process. If it is determined that the second storage tank 20 does not store the mixture or does not store a sufficient amount of the mixture, the sensor can send a signal to the control center, and the control center can then remind the user through a light to let the user know Whether the mixture has not been added or the amount of the mixture to be extracted is insufficient, etc. It should be noted that the present invention is not limited to the sensor used for detecting the mixture on the second storage tank body 20 and its principle, and the actual value of the “sufficient amount” of the mixture.

If it is determined in step S01 that the second storage tank body 20 contains a mixture or a sufficient amount of mixture, then go to step S02 to perform a stirring procedure to make the stirring member 810 move in the second storage tank body 20, thereby stirring the second storage tank Body 20 in the mixture. In detail, in step S02, the control center can drive the motor 830 to start to operate, so as to drive the stirring member 810 through the transmission member 820 to start stirring the mixture in the second storage tank 20 for a specific period of time. The rate, time, and manner of movement or rotation of the member 810 relative to the second storage tank body 20 can be adjusted according to actual needs, and the present invention is not limited thereto.

Then, go to step S03 to perform a pressure reduction procedure on the first storage tank body 10a. In detail, the depressurization procedure means that the control center starts the air extraction device 50 to gradually extract the gas in the first storage tank 10a through the air extraction channel 60 so that the internal pressure of the first storage tank 10a is gradually reduced. program. Wherein, the depressurization procedure can be performed at a suitable decompression rate such as fixed or variable, and the present invention is not limited to this.

Next, in step S04, it is determined whether the internal pressure of the first storage tank 10a is less than or equal to a predetermined pressure value. If not, that is, when the internal pressure of the first storage tank body 10a is judged to be greater than the predetermined pressure value, it means that the internal pressure of the first storage tank body 10a has not reached the predetermined pressure value, or in other words, it means that the first storage tank body 10a and the The pressure difference between the second storage tank body 20 has not yet reached the requirement of this extraction, and at this time, return to step S03 to continue the pressure reduction procedure on the first storage tank body 10a. Furthermore, before the internal pressure of the first storage tank body 10a drops to less than or equal to the predetermined pressure, the valve body 30 is kept in a closed state to prevent the powdered water from being stored from the second storage before the internal pressure of the first storage tank body 10a reaches the predetermined pressure. The tank body 20 flows into the first storage tank body 10 a through the liquid channel 40.

The judgment result in step S04 is yes, that is, when the internal pressure of the first storage tank 10a is determined to be less than or equal to the predetermined pressure value, it means that the internal pressure of the first storage tank 10a has reached or fallen below the predetermined pressure value. In other words, it means that the pressure difference between the first storage tank body 10a and the second storage tank body 20 has reached or exceeded the requirements for this extraction. At this time, step S05 is then performed to open the valve body 30 to make the first A storage tank body 10a and a second storage tank body 20 are connected through the opening of the valve body 30, so that the extract of the raw material in the second storage tank body 20 is affected by the first storage tank body 10a and the second storage tank body 20. The pressure difference between the two is driven by the rapid extraction, and flows into the first storage tank 10a along with the liquid through the liquid channel 40, so as to collect the final cold brew coffee in the first storage tank 10a.

However, the aforementioned operation flow and extraction method are only for illustrative purposes. The sequence or part of the steps can be adjusted or omitted according to the user's preference. For example, the user can also install and position both the first and second storage tanks and After the liquid and the raw material are filled, touch the key to start the extraction device, or in some cases where the raw material and the liquid do not need to be stirred, the extraction method can also omit the aforementioned step S02 without performing the stirring procedure. Or in some embodiments, the extraction method can also omit step S01 without detecting whether the second storage tank body stores the mixture, and the present invention is not limited to these adjustments.

In addition, it is supplemented that the aforementioned procedure of stirring the powder and water in the second storage tank body 20 before the pumping device 50 starts pumping has a positive effect on the extraction rate. For example, in the following table 1, this experiment is based on Kenyan coffee beans, and the ratio of powder to water, water temperature and other conditions are the same. Among them, Total Dissolved Solids (TDS) is used to indicate water solubility The ratio of substance to water, that is, the ratio of coffee in the coffee liquid, ie TDS (%) = extract weight (g) / coffee liquid volume (ml), and extraction rate BRIX (%) = extract weight (g) / Coffee powder weight (g). It can be seen that in the first to third groups with the same soaking time, the increase in stirring has a positive effect on the extraction rate; while in the second, 4 to 5 with the same agitation, the longer soaking time has a positive effect on the extraction rate. To performance.

Table I

No. Stirring time (1 circle/sec) Wetting time (min) TDS(%) Extraction rate (%) 1 50 3 1.54 15.4 2 60 3 2.08 20.8 3 70 3 2.30 twenty three 4 60 2 1.55 15.5 5 60 4 2.30 twenty three

However, it should be supplemented that if the powder water in the second storage tank body 20 is already in a state of being stirred or the negative pressure extraction procedure can be directly executed without stirring, the extraction procedure can also omit the aforementioned stirring procedure. The present invention is not limited to this.

However, the present invention is not limited to the aforementioned extraction device 1a, please continue to refer to FIGS. 8-11. FIG. 8 is a three-dimensional schematic diagram of an extraction device according to another embodiment of the present invention, and FIGS. 9-10 are the extraction devices of FIG. The exploded schematic diagram of the device from different viewing angles, and FIG. 11 is a partial schematic diagram of the inside of the extraction device of FIG. 8. This embodiment proposes an extraction device 1b, but it should be stated first that the extraction device 1b is similar to the extraction device 1a of the previous embodiment. The main difference lies in the method of installing the first storage tank and sealing the first storage tank. Therefore, the following Only the differences between this embodiment and the previous embodiment are described. For other parts such as the extraction procedure that are not described again, please refer to the description of the foregoing embodiment.

Different from the foregoing embodiment, in this embodiment, the extraction device 1b includes a housing 100b and a sealing member 70b. Wherein, the sealing member 70b is detachably fixed on the first storage tank 10a to seal the opening O; the housing 100b includes a connecting shell portion 102b, and the connecting shell portion 102b is provided with two first storage tanks on the side facing the carrier plate 103a. The alignment structure 1021b, and the sealing member 70b has two second alignment structures 702 on the side facing away from the first storage tank 10a. In this embodiment or other embodiments, the first alignment structure 1021b is, for example, a groove , And the second alignment structure 702 is, for example, a bump, but the present invention is not limited to the first alignment structure 1021b, the second alignment structure 702, and other shapes or forms. When the first storage tank 10a is placed on the carrier plate 103a, the second alignment structure 702 is detachably or slidably disposed on the first alignment structure 1021b, so that the first storage tank 10a can be guided To the ready position (as shown in Figure 8), and then align the liquid outlet 71 and the air suction port 72 of the sealing member 70b with the ports of the liquid channel 40 and the air suction channel 60, respectively, to complete the first storage tank 10a Preparations for forming a confined space inside.

Or, please refer to FIGS. 12-15. FIG. 12 is a perspective view of an extraction device according to another embodiment of the present invention. 13-14 are exploded schematic diagrams of the extraction device of FIG. 12 from different perspectives. Figure 15 is a partial schematic diagram of the interior of the extraction device of Figure 12. This embodiment proposes an extraction device 1c, but it needs to be stated first that the extraction device 1c is similar to the extraction devices 1a and 1b of the previous embodiment. The main difference lies in the way of installing the first storage tank and sealing the first storage tank. Therefore, only the differences between this embodiment and others are described below, and other parts such as the extraction procedure that are not described again can be referred to the description of the foregoing embodiment.

Different from the foregoing embodiment, in this embodiment, the extraction device 1c includes a housing 100c and a sealing member 70c. Wherein, the housing 100c includes a main housing portion 101b and a connecting housing portion 102c, the sealing member 70c is detachably fixed on the first storage tank body 10a to seal the opening O, and the liquid outlet 71 of the sealing member 70c and The suction port 72 is changed from the side of the sealing member 70c away from the first storage tank 10a to the side facing the main casing 101b. Accordingly, the liquid passage 40 and the suction passage 60 in the main casing 101b The port of is changed to be exposed from one side of the main housing portion 101b, and no longer extends into the connecting housing portion 102c. Thereby, when the first storage tank body 10a is placed on the carrier plate 103a, the liquid outlet 71 and the air suction port 72 of the sealing member 70c can respectively be connected to the exposed liquid channel on one side of the main casing 101b 40 and the port of the suction channel 60 to complete the preparation work for forming a sealed space inside the first storage tank 10a.

In addition, the present invention is not limited to the placement position of the aforementioned first storage tank. For example, please refer to FIGS. 16-17. FIG. 16 is a three-dimensional schematic diagram of an extraction device according to still another embodiment of the present invention. Fig. 17 is a partial schematic diagram of the interior of the extraction device of Fig. 16. This embodiment proposes an extraction device 1d, but it needs to be stated first that the extraction device 1d is similar to the extraction devices 1a~1c of the previous embodiment. The main difference lies in the position of the first storage tank. Therefore, the following is only for this embodiment and The differences of the others are described, and other parts such as the extraction procedure that are not described again can be referred to the description of the foregoing embodiment.

Different from the foregoing embodiment, in this embodiment, the extraction device 1d includes a housing 100d, a liquid suction channel 41, and a first storage tank 10b. Wherein, the casing 100d includes a main casing portion 101c, a connecting casing portion 102d, and a carrier plate 103b. The first storage tank body 10b is instead arranged in the main casing portion 101c, and the liquid channel 40 does not penetrate the connecting casing portion. 102d is entirely contained in the housing 100d, and one end of the suction channel 41 is detachably connected to the first storage tank body 10b, and the other end is disposed on the connecting shell 102d and faces from the connecting shell 102d toward one of the supporting trays 103b The side is connected to the outside, and therefore, the first storage tank body 10b located in the housing 100d can be connected to the outside through the suction channel 41. In this embodiment, a pump (not shown) connected to the pumping channel 41 can be provided in the main casing 101c of the extraction device 1d to remove the water in the first storage tank 10b through the pumping channel 41 The solution with the extract is pumped out. As shown in the figure, for example, the solution can be guided out of the cup 93 on the carrier plate 103b.

In this way, the first storage tank 10b can be used as a temporary storage space for cold brew coffee, which can be used by the user at any time. In this case, the overall size of the extraction device 1d of this embodiment can be increased to accommodate the first storage tank body 10b with a larger capacity, thereby increasing the amount of cold brewed coffee in the extraction device 1d. In this way, the extraction device 1d will have a larger and sufficient cold brewed coffee inventory compared to the foregoing embodiment, which is convenient for sellers who need to supply cold brewed coffee for a long time to use. In addition, in order to facilitate access to the first storage tank 10b, the plate on one side of the main casing 101c can be designed as a detachable design, so that the user can open the main casing 101c to take the first storage tank. However, the present invention is not limited to the design of how to open the main casing 101c and the mechanism for opening the main casing 101c.

According to the extraction device and the extraction method shown in the foregoing embodiments of the present invention, the gas extraction device can extract gas from the first storage tank first, so that the internal pressure of the first storage tank first drops to a predetermined pressure value before the valve body Open, so that the first storage tank body and the second storage tank body can generate a sufficient pressure difference due to the negative pressure, so that the extract in the raw material body can be driven by the pressure difference to be quickly extracted and flowed into the second storage tank. A storage tank, through experiments, such a negative pressure extraction procedure can extract the fragrant substances in the raw material in a short time.

For example, when applied to cold brew coffee, a sufficient pressure difference generated by the negative pressure can force and accelerate the fragrant substances (ie extracts) in the tiny pores of the coffee powder (ie the raw material) in a short time Was extracted. The overall process includes stirring, soaking, and extraction, which can be completed in about 5 minutes.

Compared with the traditional cold extraction method that waits for a long time for the aromatic substances to diffuse naturally from the pores of the coffee powder and dissolve into the water, the extraction device of the present invention can greatly reduce the extraction time, even to only a few minutes, so as to realize immediate consumption There is no need to make a large amount of inventory in advance, save the space of the refrigerator, and reduce the cost of electricity for making. Moreover, because the coffee powder is in contact with water for a short time, it can also greatly reduce impurities that dissolve into the water due to too long soaking time And affect the probability of flavor.

In addition, due to various different requirements for coffee flavor and coffee beans, the extraction device of the present invention can record cold extraction templates for various flavors and coffee beans, for example, to highlight the specific flavor of specific coffee beans and need to be stirred , Soaking and extraction time and other operational information are made into templates for users to quickly select in the future. In addition, because of the needs of beverage production, such as making a concentrated liquid for subsequent addition of other flavoring materials, or making it into a drink for direct drinking, or having its specific flavor adjustment in each store, it can be adjusted for the powder-water ratio. Adjust the time of stirring, soaking and extraction to obtain different extraction results.

In addition, in some embodiments, a sealing member is provided to seal the first storage tank to improve the efficiency of the negative pressure extraction procedure. Correspondingly, in some embodiments, the first storage tank and the housing are provided with corresponding guiding and positioning structures to facilitate the user to place the first storage tank quickly and with low error rate. Preparation position.

In addition, the extraction device described in the foregoing embodiments of the present invention can also be applied to cold brewing tea, or even to hot brewing coffee or hot brewing tea, but because the soluble substances (that is, fragrant substances or extracts) in coffee powder are high The environment of water temperature is easier to dissolve. In addition, hot brew coffee requires different extraction rates (TDS 1.15~1.3 is better). Therefore, according to the hot extraction method, adjust the powder-water ratio, stirring, soaking and extraction time, and you can quickly achieve The predetermined extraction rate.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. All changes and modifications made without departing from the spirit and scope of the present invention fall within the scope of patent protection of the present invention. For the scope of protection defined by the present invention, please refer to the attached patent scope.

1a, 1b, 1c, 1d: extraction device 10a, 10b: the first storage tank 11a: The second guiding structure 20: The second storage tank 21: Outlet connector 22: filter structure 30: valve body 40: Liquid channel 41: Pumping channel 50: Exhaust device 60: exhaust channel 70a, 70b, 70c: sealing member 71: Liquid outlet 72: Exhaust Port 80: mixing component 91, 92: elastic parts 93: cup body 100a, 100b, 100c, 100d: shell 101a, 101b, 101c: main housing 102a, 102b, 102c, 102d: connecting shell 103a, 103b: Carrier plate 104: Actuation key 701: Pressure Incline 702: second alignment structure 800: mixing component shell 810: Stirring component 820: Transmission component 830: drive motor 1021: hole 1021b: The first alignment structure 1031: The first guiding structure 1041: push against the slope D, D’: Positioning detector O: opening S01~S05: steps

Fig. 1 is a three-dimensional schematic diagram of an extraction device according to an embodiment of the present invention. Figures 2 to 3 are exploded schematic diagrams of the extraction device of Figure 1 from different perspectives. Fig. 4 is a partial schematic diagram of the interior of the extraction device of Fig. 1. Fig. 5 is a schematic side sectional view of the extraction device of Fig. 1. 6A-6B are partial enlarged schematic side sectional views of the extraction device of FIG. 1 when the position of the sealing member is switched. Figure 7 is a flow chart of the extraction method of the present invention. FIG. 8 is a three-dimensional schematic diagram of an extraction device according to another embodiment of the present invention. Figures 9-10 are exploded schematic diagrams of the extraction device of Figure 8 from different perspectives. Fig. 11 is a partial schematic diagram of the interior of the extraction device of Fig. 8. Fig. 12 is a three-dimensional schematic diagram of an extraction device according to another embodiment of the present invention. 13-14 are exploded schematic diagrams of the extraction device of FIG. 12 from different perspectives. Figure 15 is a partial schematic diagram of the interior of the extraction device of Figure 12. Fig. 16 is a three-dimensional schematic diagram of an extraction device according to still another embodiment of the present invention. Fig. 17 is a partial schematic diagram of the interior of the extraction device of Fig. 16.

1a: Extraction device

10a: The first storage tank

20: The second storage tank

30: valve body

40: Liquid channel

50: Exhaust device

60: exhaust channel

70a: Sealing member

91, 92: elastic parts

100a: shell

101a: main housing

102a: Connect the shell

103a: Carrier plate

104: Actuation key

1021: hole

Claims (16)

An extraction device for a mixture containing a liquid and a raw material body, the extraction device comprising: a first storage tank body; a second storage tank body for storing the mixture; a valve body connected to Between the second storage tank and the first storage tank; and an air extraction device connected to the first storage tank for extracting gas from the first storage tank to make the first storage tank The internal pressure drops to a predetermined pressure value; wherein when the internal pressure of the first storage tank reaches the predetermined pressure value, the valve body opens. The extraction device according to claim 1, further comprising a liquid channel connected between the second storage tank body and the first storage tank body, and the valve body is arranged on the liquid channel. The extraction device according to claim 1, further comprising an air extraction channel, and the air extraction device communicates with the first storage tank body through the air extraction channel. The extraction device according to claim 2, further comprising a sealing member that detachably covers an opening of the first storage tank, wherein the sealing member has a liquid outlet and an air suction opening, and the liquid outlet is connected to the The liquid channel, the suction port is connected to the suction device. The extraction device according to claim 4, further comprising a casing and a positioning detector. The positioning detector is arranged on the casing, and the first storage tank is detachably arranged on the casing. A preparation position is provided. When the first storage tank is located at the preparation position, the first storage tank or the sealing member triggers the positioning detector. The extraction device according to claim 4, further comprising a housing, the housing includes an actuating key, and the sealing member is movably fixed on the housing to have a lowered position and a raised position, wherein when the When the sealing member is in the lowered position, the sealing member covers the opening of the first storage tank. When the sealing member is in the raised position, the sealing member exposes the opening of the first storage tank, and the result is The movable key is used for linking the sealing member to switch the sealing member between the lowered position and the raised position. The extraction device according to claim 4, further comprising a housing having at least two first alignment structures, and the sealing member has at least two second alignment structures, which are respectively detachably disposed on the housing The at least two first alignment structures guide the first storage tank to a preparation position. The extraction device according to claim 1, further comprising a housing having a first guiding structure, the first storage tank having a second guiding structure, and the second guiding structure detachably The first guiding structure is arranged on the shell to guide the first storage tank to a preparation position. The extraction device according to claim 1, further comprising a stirring assembly, the stirring assembly comprising a stirring member and a transmission member, the transmission member is assembled to the second storage tank body, the stirring member is connected to the transmission member, the The stirring member is movably located in the second storage tank body and extends from the opening of the second storage tank body to the bottom of the second storage tank body for stirring the raw material body and the liquid. The extraction device according to claim 9, wherein the stirring member revolves around the center line of the second storage tank. The extraction device according to claim 9, wherein the stirring assembly further comprises a driving motor, and the transmission member is connected between the stirring member and the driving motor for transmitting the power of the driving motor to the stirring member. The extraction device according to claim 1, further comprising a liquid suction channel detachably connected with the first storage tank body to communicate with the first storage tank body, so that the first storage tank body The mixture of the liquid and the extract of the raw material body can flow out. The extraction device according to claim 1, further comprising a filtering structure, which is disposed on the second storage tank body to prevent the raw material body from entering the first storage tank body. An extraction method for an extraction device, the extraction device comprising a first storage tank and a valve body, the valve body is connected to the first storage tank, the extraction method includes: performing the first storage tank A pressure reduction procedure; determine whether the internal pressure of the first storage tank is less than or equal to a predetermined pressure value; when the internal pressure of the first storage tank is determined to be less than or equal to the predetermined pressure value, open the valve body; And when the internal pressure of the first storage tank is judged to be greater than the predetermined pressure value, continue to perform the pressure reduction procedure on the first storage tank. The extraction method according to claim 14, wherein the extraction device further comprises a second storage tank body, the valve body is connected between the first storage tank body and the second storage tank body, the second storage tank body Used to store a mixture, the mixture includes a liquid and a raw material, and before the step of performing the pressure reduction procedure on the first storage tank body, further includes: performing a stirring procedure so that a stirring member is stored in the second storage tank. Move in the tank body, thereby stirring the mixture in the second storage tank body. The extraction method according to claim 15, wherein before the step of performing the stirring procedure, it further comprises: detecting that the second storage tank body stores the mixture.

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