JP6449350B2 - Tea extraction apparatus and tea extraction method - Google Patents

Description

  The present invention relates to a tea extraction method for extracting drinkable components from dry tea leaves, and even if hot water at approximately 100 ° C. is supplied immediately after boiling, this hot water is naturally suitable for the first tea. The present invention relates to a novel tea extraction apparatus and tea extraction method that can be cooled to temperature and anyone can brew delicious tea.

  For example, when drinking green tea in the form of leaf typified by Japanese tea, it is extracted using teapots such as teapots. The same tea leaves as senme can be drunk several times with different flavors. This is because umami components composed of amino acids such as theanine are extracted at a relatively low temperature, whereas catechins as astringent components and caffeine as a bitter component are not extracted unless they are at a relatively high temperature. Using such characteristics, for example, it is possible to taste the first decoction with low temperature hot water and taste the umami, and after the second brew with high temperature hot water to taste astringency and bitterness. Furthermore, density adjustment by adjusting extraction time (leaching time) is also possible. In particular, in the first savory that tastes the umami component, in order to extract a large amount of theanine, which is an amino acid of the umami component, and a small amount of catechin and caffeine that exhibit bitterness and astringency, boil hot water and pour it into a teapot. At this time, the boiling water is usually transferred to a tea pot or teacup called “hot water chiller” several times, and then cooled to an appropriate temperature. For example, hot water at an appropriate temperature of about 70 ° C. to 80 ° C. is poured into a teapot to extract tea. It is common to do this, and this is said to be how to make delicious tea.

However, this method of making water chillers is difficult to handle and tends to be avoided because tea utensils for making water chillers and teacups themselves are extremely hot.
In addition, in order to brew tea deliciously using a teapot, keep the temperature of hot water, the relationship between the amount of hot water and the amount of tea leaves properly, or properly manage the brewing time (extraction time), and the type of tea leaves It was necessary to change the temperature of hot water every time, and it was difficult to make these judgments, especially for those who are not familiar with how to brew tea.
In addition to the above, the extraction using the teapot requires the disposal of the tea husk after drinking, the washing of the teapot, and the like, and the post-treatment after the extraction takes time.

Of course, in order to make up for these drawbacks, for example, tea-drinking components were extracted in advance at the factory, filled and sealed in plastic bottle containers, etc., or extracted with tea bags or drip-type drinks. Various green tea products are also offered.
However, in such a product form, it is very difficult to faithfully reproduce the delicate taste and aroma of high-quality tea, and from the viewpoints of logistics costs and environmental impact, etc., while using normal tea leaves, Tea dispensers that can extract tea without using a teapot have been proposed (see, for example, Patent Documents 1 to 6).

  However, in these prior arts, for example, a plurality of temperature zone extraction supply units such as a hot water supply unit and a cold water supply unit are required, the structure is complicated and the manufacturing cost is high, and it is not easy to carry around Therefore, further improvement was desired.

JP 2003-310445 A JP 2004-208743 A JP 2009-529 A Japanese Utility Model Publication No. 3-49723. Japanese Utility Model Publication No. 5-48826 Japanese Utility Model Publication No. 6-24638

  The present invention has been made in view of such a background, and even when hot water immediately after boiling is used as hot water for extraction, it is possible to generate hot and cold water naturally at a proper temperature in the apparatus. This is an attempt to develop a new tea extraction apparatus and tea extraction method that allow a person who is unfamiliar with how to brew to easily brew delicious tea.

That is, the tea extraction device according to claim 1 is:
A hot water storage container having an appropriate capacity, an extraction container for extracting drinking components from tea leaves received from the hot water storage container, and a hot water feeding siphon tube for transferring hot water from the hot water storage container to the extraction container; In the tea extraction device comprising
The hot water feeding siphon tube is provided with a bypass portion at least in part, and the hot water is transferred by the hot water feeding siphon tube having the bypass portion, thereby reducing the temperature of the hot water. It consists of.

Further, the tea extraction device according to claim 2 is in addition to the requirement according to claim 1,
The bypass portion is formed of a metal material having excellent thermal conductivity.

Further, the tea extraction device according to claim 3 is in addition to the requirement according to claim 1 or 2,
The hot water feeding siphon tube is characterized in that the bypass portion is formed in an ascending transfer portion that reaches a hot water discharge start level that is the highest height.

Moreover, in addition to the requirements of any one of the said Claims 1 to 3, the tea extraction apparatus of Claim 4 WHEREIN:
As a path for transferring hot water from the hot water storage container to the extraction container, in addition to the hot water feeding siphon pipe, a bypass short pipe having a short transfer length is provided in parallel with the hot water feeding siphon pipe,
Further, a switching valve for transferring hot water from the hot water storage container to either the hot water feeding siphon pipe or the bypass short pipe is provided.

Moreover, in addition to the requirements of any one of the said Claims 1 to 4, the tea extraction apparatus of Claim 5 WHEREIN:
In the subsequent stage of the extraction vessel, an extract siphon tube for transferring the extract extracted from tea leaves to a container such as a cup of water is provided.
The siphon tube for the extract is characterized in that the extract discharge start level at the maximum height can be changed.

The tea extraction method according to claim 6 is:
After supplying hot water to the hot water storage container, this hot water is sent to a subsequent extraction container through a siphon tube for feeding hot water, and then cooled to the subsequent extraction container, where the tea leaves are leached into the hot water and the drinking ingredients are extracted from the tea leaves. In the tea extraction method in which the extract is sent to the subsequent injection portion through the extract siphon tube and injected into a container such as a hot water drink,
During the transfer of hot water by the siphon tube for hot water feeding, it takes an appropriate hot water cooling generation time,
Further, during the transfer of the extract by the siphon tube for the extract, an appropriate leaching time is required,
The entire extraction time is controlled by adjusting one or both of the hot water cooling generation time and the leaching time.

The above-described problems can be solved by using the configuration of the invention described in each of the claims.
First, according to the first aspect of the present invention, since a bypass portion having a long transfer length is provided in a part of the siphon pipe for hot water feeding, the hot water has a relatively long time to be transferred, and hot water can be cooled even when hot water is supplied. Even people who are naturally accustomed to how to brew tea can easily produce the appropriate temperature of water. For this reason, anyone can easily perform extraction that fully utilizes the characteristics of leaf green tea.
Incidentally, the reason why the present applicant mainly assumed “hot water” as a pouring target is that hot water is inevitably mainstream in the current general home environment. Specifically, there are many instant foods such as instant cup noodles that can be cooked in just a few minutes after pouring hot water, cup soups made by pouring hot water into powdered ingredients, cup coffee, instant miso soup, etc. This is because it is widely used in homes, and hot water is used frequently in daily life. For this reason, every household normally has a so-called electric pot, and hot water is always available.

According to the second aspect of the present invention, since the bypass portion is formed of a metal material having excellent thermal conductivity, when the hot water flows through the bypass portion of the siphon pipe for hot water supply, the cooling effect is particularly enhanced and determined. It becomes easier to generate a desired hot water cooling in the created space. That is, when downsizing, weight reduction, etc. are important as a tea extraction device, it is assumed that the transfer length of the siphon pipe for hot water feeding is long and difficult to secure, but even in such a case, the desired cooling performance can be achieved. Can be achieved.
In addition, when the full length of the siphon pipe for hot water feeding is limited, as a method for enhancing the cooling effect, for example, fins are formed on the outer side of the metal siphon pipe for hot water feeding (bypassing part) to improve heat dissipation. (So-called fin tube).

  According to the invention of claim 3, since the detour portion is formed in the rising transfer portion of the hot water feeding siphon tube, the hot water rises in the hot water feeding siphon tube toward the hot water discharge start level. In addition, a relatively long transfer time can be secured, and the hot water being transferred can be cooled over a relatively long time.

  According to the invention described in claim 4, as the transfer path for transferring hot water from the hot water storage container to the extraction container, either one of a long transfer length siphon pipe for hot water transfer and a short transfer length bypass short pipe is selected. can do. That is, if you want to transfer the hot water to the extraction vessel in a state of being cooled properly, select the siphon tube route for hot water feeding, and if you want to transfer the hot water to the extraction vessel in a high temperature state, select the bypass short tube route. For example, a hot water feeding route suitable for each roast can be selected. In general, tea is extracted by chilling the first decoction and using the same tea leaves after the second decoction with hot water. The present invention is a method for brewing such an original tea. Anyone can easily do.

  According to the fifth aspect of the present invention, since the extraction liquid siphon tube can change the extraction liquid discharge start level which is the maximum height, the leaching time during which the tea leaves are immersed in hot water can be adjusted. Specifically, for example, when it is desired to secure a long extraction time, the extraction liquid discharge start level of the extraction siphon tube is increased, while when the extraction time is desired to be shortened, the extraction liquid discharge start level may be decreased. it can. As described above, in the present invention, the adjustment of the brewing time can be set by a very simple operation depending on the type of tea leaves, the number of times of roasting, and the like.

  According to the sixth aspect of the present invention, the hot water is transferred by the hot water feeding siphon tube so that an appropriate hot water cooling time is required, and the tea leaf leaching time is obtained by transferring the extracted liquid by the extract liquid siphon tube. The overall extraction time can be controlled by adjusting these times. Thereby, even a person unfamiliar with how to brew tea can brew tea in accordance with, for example, the extraction time (hot water cooling time / leaching time) according to the original method of brewing. Of course, such extraction time (water cooling generation time / leaching time) does not necessarily have to be adapted to the original method of cooking, and can be appropriately arranged according to the user's preference and the like.

The perspective view (a) which shows a mode that the hot water for extraction (hot water) is inject | poured into the tea extraction apparatus as one Example of this invention from an electric pot, and explanatory drawing which shows the internal structure of this tea extraction apparatus skeletally (B). It is explanatory drawing which shows typically the extraction principle of a tea extraction apparatus. It is explanatory drawing which shows a mode that after pouring hot water into a hot water storage container, this hot water goes up the hot water discharge siphon pipe | tube from the lower part of a hot water storage container toward the hot water discharge start level (maximum height). It is explanatory drawing which shows a mode that the hot water poured into the hot water storage container exceeds the hot water discharge start level of the siphon pipe for hot water feeding, and is discharged to the extraction container of the latter stage. The hot water (extracted liquid) discharged to the extraction container rose from the lower part of the extraction container toward the extract discharge start level (maximum height) through the extract siphon tube and reached this extract discharge start level. It is explanatory drawing which shows a mode. It is explanatory drawing which shows a mode that the extraction liquid which raises the inside of the siphon pipe | tube for extraction liquids exceeds the extraction liquid discharge start level, and is inject | poured into containers, such as a drinking cup, in an injection | pouring part of a back | latter stage. It is a perspective view which shows skeletally the filter and extraction container which enabled it to squeeze a water | moisture content from the tea leaf (tea husk) which finished extraction. FIG. 6 is a cross-sectional view showing a state in which the flow path of hot water or an extract is switched to a siphon tube (a siphon tube for hot water feeding / a siphon tube for an extract) or a bypass short tube by a switching valve provided below the hot water storage container or the extraction container. (A) is a view in which the switching valve is closed and hot water or an extract is sent to the siphon tube, and (b) is a state in which the switching valve is opened and hot water or an extract is sent to the bypass short tube. FIG. It is explanatory drawing which shows the tea extraction apparatus (automatic teapot of a server injection | pouring specification) which incorporated the server in the apparatus and stored the tea (extracted liquid) extracted to this server. It is explanatory drawing which shows the tea extraction apparatus (automatic teapot of a hot water pouring specification) which made it possible to place a hot water cup in the apparatus and poured tea (extracted liquid) extracted into this hot water cup. It is explanatory drawing which shows a mode that the hot water adjustment part of a tea extraction apparatus (automatic teapot of a server injection | pouring specification) is open | released in order to take out the tea husk after tea leaf insertion or extraction. An explanatory diagram (a) skeletally showing a tea extraction device in which a non-foldable metal tea strainer is applied as a filter and this filter is provided in an exposed state, and a non-container shape so that tea leaves cannot be accommodated inside It is explanatory drawing (b) which shows the filter formed in. It is explanatory drawing which shows the various modifications of the detour part in the hot water feeding siphon pipe, (a) is the figure which formed the detour part in both the rising transfer part and the downward transfer part of the hot water siphon pipe. (B) is the figure which formed the detour part only in the downward transfer part of the siphon pipe for hot water feeding.

  The mode for carrying out the present invention includes one described in the following embodiments, and further includes various methods that can be improved within the technical idea.

As shown in FIG. 1 and FIG. 2 as an example, the tea extraction device 1 includes a hot water adjustment unit 2 that adjusts the hot water HW for extraction to a temperature suitable for extraction according to the type and properties of the tea leaves TL, In particular, an extraction unit 3 for extracting a drinking component from tea leaves TL and an extraction liquid (a so-called “tea” with the same symbol HW as the extraction hot water HW) extracted from the drinking component are poured into a container 41 such as a drinking cup. The injection part 4 is provided, and for example, these are suitably accommodated in the housing 11 as shown in FIG.
Here, reference numeral 12 in the figure is a handle provided so as to protrude to the outside of the housing 11, and is used for carrying the tea extraction device 1, for example. Of course, if the tea extraction device 1 is an automatic teapot with server injection specifications (an automatic teapot in which a server is incorporated in the tea extraction device 1 and the tea extracted in this server is temporarily stored) However, by holding the handle 12 and tilting the tea extraction device 1, the extract HW stored in the server can be poured into drinking water or the like.
Note that the tea extraction apparatus 1 of the present invention generates the hot water HW naturally (automatically) in the apparatus without changing the hot water HW to a tea cooler or the like even if it is hot water HW immediately after boiling. It is a big feature to be able to do. Incidentally, in this specification, the hot water HW for tea extraction is commonly given the symbol “HW” regardless of the temperature (even when the water is cooled), and this symbol “HW” is described above. Thus, it uses similarly about the extract which extracted the drinking component from tea leaf TL.
Hereinafter, each component which comprises the tea extraction apparatus 1 is further demonstrated.

First, the hot water adjusting unit 2 will be described.
The hot water adjustment unit 2 is a part that adjusts hot water HW immediately after boiling supplied from, for example, an electric pot or a medicine cup to a hot water temperature suitable for extraction, and a hot water storage container 21 that can store a certain amount of hot water HW. Have.
In the present embodiment, the hot water HW to be supplied is often hot water HW, so that the supplied hot water HW is cooled to an appropriate temperature and transferred to the extraction unit 3 after the hot water storage container 21. A siphon tube (a siphon tube for hot water cooling) 22 and a bypass short tube 24 that transfers the supplied hot water HW to the extraction unit 3 in the state of hot water are provided in parallel, and the hot water HW supplied to the hot water storage vessel 21 is These are transferred to the extraction unit 3 through any of the pipes (flow paths), and for this purpose, a switching valve 25 for switching the flow path is provided.
In addition, although the code | symbol 26 shown in FIG. 1 is a cover body for closing the upper part of the hot water storage container 21 suitably, this is not necessarily an essential structural member.

Here, the difference in extraction to which the siphon pipe 22 for feeding hot water or the bypass short pipe 24 is applied will be described.
When the hot water feeding siphon tube 22 is applied (the switching valve 25 is closed), naturally, the hot water HW poured into the hot water storage container 21 is sent to the extraction unit 3 via the hot water feeding siphon tube 22. It is done. At this time, the hot water HW poured into the hot water storage container 21 is sent from the lower part into the hot water feeding siphon tube 22 and is gradually transferred upward toward the hot water discharge start level LB which becomes the maximum height in this tube. The At this time, the liquid level in the hot water feeding siphon tube 22 rises while always maintaining the same level as the liquid level in the hot water storage container 21. For this reason, the hot water HW is held in the hot water feeding siphon tube 22 and the hot water storage container 21 for an appropriate time until it reaches the hot water discharge start level LB in the hot water feeding siphon tube 22.

  Then, the liquid level in the hot water feeding siphon tube 22 reaches the hot water discharge start level LB, and when this level is exceeded, the siphon action functions and is stored in the hot water feeding siphon tube 22 or the hot water storage container 21. The hot water HW is discharged at a stretch toward the extraction unit 3 at the subsequent stage. For this reason, it is preferable that the supply of hot water HW poured into the hot water storage container 21 is stopped when the liquid level in the hot water feeding siphon tube 22 reaches the hot water discharge start level LB.

  On the other hand, when the bypass short pipe 24 is applied (the switching valve 25 is opened), the hot water HW poured into the hot water storage container 21 does not pass through the hot water feeding siphon pipe 22 and enters the hot water storage container 21. Without being stored, it passes through the bypass short pipe 24 and is sent to the extraction unit 3 almost as it is. As described above, when the passage route of the bypass short pipe 24 is selected, the hot water HW poured into the hot water storage container 21 simply passes through here (without being held for an appropriate time as described above). ) And discharged to the extraction unit 3 as it is.

Hereinafter, the hot water feeding siphon tube 22 will be described in more detail.
As shown in FIG. 1 and FIG. 2 as an example, the hot water feeding siphon tube 22 rises from the connecting portion with the hot water storage container 21 to be transferred to the hot water discharge start level LB in the hot water feeding siphon tube 22. The transfer part (outward path) 22U is formed so as to constitute a zigzag-shaped detour part 23, and the descending transfer part 22D after the hot water discharge start level LB is continued several straight pipes (straight path), In other words, it is formed in a crank shape.
Here, the bypass portion 23 has a longer transfer length than the case where the hot water HW transfer path is formed in a straight line or a short path close thereto, for example, the hot water feeding siphon tube 22 is formed in an upside-down inverted U shape. It indicates a route (image of detouring a short route), and has a transfer length of about 1 m, for example, in a state where the detour portion 23 is straightened. Naturally, the hot water HW flowing through the bypass 23 takes more time to transfer than when passing through a short path, and the hot water temperature is lowered during that time.

In addition, since the detouring portion 23 takes on the action of generating such hot water cooling HW, the detouring portion 23 is preferably formed of a metal material (metal tube) having excellent heat conductivity, such as a stainless steel tube or a copper tube. Can be applied. Of course, in order to enhance the cooling effect of the hot water HW flowing in the hot water feeding siphon tube 22, fins or the like are appropriately provided on the outer surface of the metal tube constituting the bypass portion 23 (so-called fin tube) to further improve heat dissipation. It is possible.
In the planar projection view as shown in FIG. 2, for example, the detour portion 23 is illustrated so as to draw a zigzag substantially in the vertical direction, but in a three-dimensional manner, for example, a spiral as shown in FIG. A step-like configuration is also possible, or various paths such as a spiral shape along a side surface of a cone or a pyramid, which is referred to as a “toggle shape”, can be assumed.

On the other hand, the bypass short pipe 24 is formed as a path having a short transfer length with respect to the hot water feeding siphon pipe 22 having a long transfer length. That is, “short” of the bypass short pipe 24 means that it has a shorter transfer length than the hot water feeding siphon pipe 22.
The short short pipe 24 is formed shortly because the hot water HW supplied to the hot water storage container 21 passes through the hot water storage container 21 without being substantially stored, and is transferred from the hot water adjustment unit 2 to the extraction unit 3. This is so that it is hardly subjected to cooling.
In addition, although the bypass short pipe 24 in this embodiment is formed as a straight pipe that goes almost straight downward from the hot water adjusting section 2 to the extraction section 3, it may be inclined as appropriate, for example, bent in a "<" shape. It may be formed.

Further, as shown in FIG. 2, as an example, a normal inverted U-shaped siphon tube 28 is provided between the hot water feeding siphon tube 22 and the bypass short tube 24. Switching valves 251 and 252 can be provided on the sending siphon tube 22. In such a case, for example, a mode in which the hot water HW from the hot water storage container 21 is transferred to any one of the hot water feeding siphon tube 22, the bypass short tube 24, and the inverted U-shaped siphon tube 28 by a valve operation can be employed. And by such an aspect, the temperature of hot water HW (hot water cooling) transferred to the extraction part 3, time, the amount of hot water (the amount of hot water stored in a siphon tube), etc. can be controlled more variously.
Specifically, the temperature of the hot water HW to be selected and transferred as described above is “low temperature (cooled)”, and the temperature of the hot water HW that is selected and transferred as the bypass short tube 24 is “high temperature”. However, when the inverted U-shaped siphon tube 28 is selected, the temperature of the hot water HW can be set to an intermediate temperature. Further, the transfer time of the hot water HW that is selected and transferred by the siphon tube 22 for hot water feeding is “long”, while the transfer time of the hot water HW that is selected and transferred by the bypass short tube 24 is “short”, whereas When the pipe-like siphon tube 28 is selected, the transfer time of the hot water HW can be set to “medium” which is about the middle. Furthermore, when the detour portion 23 is fed by the hot water feeding siphon tube 22 provided in the ascending transfer portion 22U, the amount of hot water that can be stored in the hot water feeding siphon tube 22 is “large (large amount)”, whereas an inverted U-shape. When the hot water is fed through the pipe-shaped siphon tube 28, the amount of hot water that can be stored in the inverted U-shaped siphon tube 28 can be "small (small amount)".

Moreover, as shown in FIG.1 (b) and FIG. 2, it is preferable to provide the hot water adjustment part 2 (hot water storage container 21) as an example, and the overflow mechanism 6 is demonstrated below.
The overflow mechanism 6 is a mechanism for escaping (discharging) the excess amount to the extraction unit 3 when a predetermined amount or more of hot water HW is supplied to the hot water storage container 21, and thereby a certain amount (for example, It is configured to supply hot water HW for one cup of hot water. Of course, the excessive hot water HW can be discharged not only to the extraction unit 3 but also to a container 41 such as a hot water drinker in the injection unit 4.
The overflow mechanism 6 includes an overflow recovery bowl 61 provided at the upper edge of the hot water storage container 21 and an overflow recovery pipe 62 that causes the extraction section 3 to drop the hot water HW received by the bowl.

In FIG. 2, the sign LA indicates the height at which overflow begins (this is referred to as the overflow start level), while the sign LB in the figure indicates the hot water discharge start level of the hot water feeding siphon tube 22, The overflow start level LA is set to a level (height) higher than the hot water discharge start level LB. That is, the overflow from the hot water storage container 21 may not be performed depending on the supply amount of the hot water HW, and the overflow mechanism 6 is safe for preventing the hot water HW from overflowing from the tea extraction apparatus 1 (hot water storage container 21). It can be said that it is a countermeasure.
Incidentally, it is preferable that the overflow start level LA and the hot water discharge start level LB are displayed on the inner side of the hot water storage container 21 by engraving or marking so that the user who performs extraction can see from the outside. When pouring hot water HW, it can be used as a guide for pouring hot water.

Next, the extraction unit 3 will be described.
As described above, the extraction unit 3 is an extraction site where the dried tea leaves TL are brought into contact with the hot water HW supplied from the hot water adjustment unit 2 to leach out the drinking components of the tea leaves TL. The extraction unit 3 includes an extraction container 31 that is substantially an extraction space, and a filter 32 that is set in the extraction container 31, and the tea leaves TL are extracted from the extraction container 31 (filter 32) prior to extraction. It is accommodated in advance.
Further, in the subsequent stage of the extraction container 31, the extraction liquid siphon tube 33 for transferring the extraction liquid HW extracted from the tea leaves TL to the injection unit 4, and the extraction liquid HW without passing through the extraction liquid siphon tube 33. A bypass short pipe 34 that is directly transferred to the injection unit 4 is provided in parallel, and the extract HW extracted in the extraction container 31 is transferred to the injection unit 4 through any one of the pipes (flow paths). For this purpose, a switching valve 35 for switching the flow path is provided.

Here, the difference in extraction to which the siphon tube 33 for extraction liquid or the bypass short tube 34 is applied will be described.
First, when the siphon pipe 33 for the extraction liquid is applied (the switching valve 35 is closed), the hot water HL supplied from the hot water adjusting unit 2 (the hot water feeding siphon pipe 22 or the bypass short pipe 24) is supplied to the extraction container 31. After being supplied, it reaches the extraction liquid siphon pipe 33 and gradually rises toward the extraction liquid discharge start level which is the highest height in the pipe. At this time, the liquid level of the siphon tube 33 for the extraction liquid rises while always maintaining the same height as the liquid level in the extraction container 31. For this reason, the extraction liquid HW stays in the extraction liquid siphon pipe 33 or the extraction container 31 for an appropriate time until the liquid level in the extraction liquid siphon pipe 33 reaches the extraction liquid discharge start level. Become.

  Then, when the extract HW rising in the extract siphon tube 33 exceeds the extract discharge start level, the siphon function is activated and stays in the extraction container 31 and the extract siphon tube 33. Extract liquid HW is discharged into container 41 such as a cup of water at once in injection part 4. Note that while the extract HW gradually rises in the extract siphon tube 33 (the residence time), the tea leaves TL in the extraction container 31 are immersed in the hot water HW, and the drinking components are extracted. That is, the residence time is a leaching time during which the tea leaves TL are soaked in the hot water HW, and the longer the leaching time, the thicker the extract HW is and the more the tea is extracted as dark tea.

  On the other hand, when the bypass short pipe 34 is applied (the switching valve 35 is opened), the hot water (extracted liquid) HW in contact with the tea leaves TL in the extraction space (extraction container 31) is not stored in the extraction container 31. It is poured as it is into a container 41 such as a cup of water without passing through an appropriate leaching time.

Hereinafter, the siphon tube 33 for the extract will be described in more detail.
As shown in FIG. 1 and FIG. 2, the extraction siphon tube 33 is different from the hot water feeding siphon tube 22 in that the ascending transfer portion (outward path) and the descending transfer portion (return path) are substantially straight. In particular, here, the inverted U-shaped siphon tube 33 for extraction liquid is generally installed in an inclined state.

Further, the siphon tube 33 for the extract in this embodiment includes a level adjusting mechanism 8 so that the extract discharge start level that is the maximum height of the siphon tube 33 for the extract can be changed. Mechanism. That is, when the extraction liquid discharge start level is set to a low height, the leaching time is shortened, and when the extract liquid discharge start level is set to a high level, the leaching time is increased.
This is because it is usually desirable for green tea to have different leaching times for the first decoction depending on the difference in steaming time in the manufacturing process. That is, in general, it is necessary to shorten the brewing time for deep steamed tea having a longer steaming time and to increase the brewing time for shallow steamed tea having a shorter steaming time. For this reason, the level adjustment mechanism 8 changes the extraction liquid discharge start level of the extraction siphon tube 33 so that the residence time of the extraction liquid HW, that is, the leaching time can be changed. Of course, an extract discharge start level (low height) with a short leaching time is suitable for deep steamed tea, and an extract discharge start level (high height) with a long leaching time is suitable for shallow steamed tea.

Hereinafter, the level adjusting mechanism 8 will be described in more detail.
As shown in FIG. 2 as an example, the level adjusting mechanism 8 has a lower end portion of the extraction liquid siphon tube 33 formed so as to be rotatable (connected so that the inclination angle can be changed), and the extraction liquid is discharged. The starting level can be arbitrarily adjusted by the height of LC to LD. Specifically, for example, the siphon tube 33 for the extraction liquid is connected to the lower end (discharge port) of the extraction container 31 and the discharge port to the injection unit 4 by a joint 33J whose inclination angle can be changed.
Of course, the level adjustment mechanism 8 is not necessarily limited to such a structure. For example, the extraction siphon tube 33 itself is formed of a flexible synthetic resin tube or the like, and the extraction siphon is formed. It is also possible to change the extraction liquid discharge start level by suspending the tube 33 from the casing 11 or the frame and changing the height of the suspension position.

On the other hand, the bypass short tube 34 is a path whose transfer length is shorter than that of the siphon tube 33 for the extraction liquid, similarly to the bypass short tube 24, and the bypass short tube 34 is also connected to the injection part 4 substantially straight below. Although it is formed in a straight tubular shape, it may be inclined as appropriate, for example, it may be bent into a “<” shape.
In addition, it is also possible not to provide the bypass short pipe 34 for the extraction unit 3. This is because the extraction siphon pipe 33 includes the level adjusting mechanism 8 such as a tiltable configuration as described above. If the maximum height of the extraction siphon tube 33 is set to a very low height by the adjusting mechanism 8, the time during which the extract HW flows through the extract siphon tube 33 (the time to rise) can be set to an extremely short time. (See FIG. 12A).

In addition, the extraction container 31 of the extraction unit 3 preferably includes a tea squeeze squeezing mechanism 7 that squeezes out moisture from the tea leaves that have been extracted from the drinking components (this is referred to as “tea husk” and is given the same symbol TL as the tea TL) Hereinafter, the tea squeezing mechanism 7 will be described.
As shown in FIG. 7, as an example, the extraction container 31 includes a pair of plate-like flat wall surfaces 31F and a pair of bellows wall surfaces 31B connecting the same, so that the entire container can be folded. It is preferably configured (extendable / shrinkable), and water is squeezed out from the tea husk TL accommodated in the extraction container 31 by overlapping the flat wall surfaces 31F facing each other after extraction in an interlaced manner. In the present embodiment, the opposing bellows wall surfaces 31B are both formed so as to be rotatable around the lower end like a fan, and the extraction container 31 has a folding structure in which the flat wall surfaces 31F are superposed. Incidentally, the reference numeral 36 in the drawing is a rotation fulcrum when the extraction container 31 (flat wall surface 31F) is folded.

  Further, for such a foldable extraction container 31, the filter 32 set therein is also preferably easily deformed in response to the flat wall surface 31F, such as a nylon mesh filter or Nonwoven fabric filters and the like can be applied. In addition, the code | symbol 32C in a figure is a nail | claw (for example, paper-made) for hooking such a filter 32 to the extraction container 31. FIG.

Moreover, the code | symbol 71 shown in FIG.1, FIG.9-FIG.11 is a lever for squeezing out the water | moisture content of the tea-shell TL, and it is preferable that this lever 71 can be operated from the outside of an apparatus. Further, reference numeral 72 in the figure is a rotation fulcrum of the lever 71, and reference numeral 36 in the figure is a rotation fulcrum when the extraction container 31 (flat wall surface 31F) is folded as described above.
For example, as shown in FIG. 1A, when the lever 71 of the tea squeezing mechanism 7 is provided so as to intersect the handle 12, the user holding the handle 12 uses his / her index finger to move the lever 71. It is convenient that the residual moisture of the tea husk TL can be squeezed out by one-handed operation such as pushing up.

Further, the water squeezed from the tea husk TL can be received by the infusion unit 4 such as a cup of water, and when the tea husk TL is discarded for each filter by the tea squeeze squeezing mechanism 7, the water drops from the tea husk TL. And can be easily discarded.
Of course, it is possible to adopt a form in which residual moisture is not squeezed out of the tea husk TL. In such a case, the extraction container 31 does not need to be foldable, and the filter 32 is also formed of a flexible material that is easily deformed. There is no need, for example, a material that is difficult to be deformed called “tea bowl”, specifically, a stainless steel container-shaped wire mesh may be applied (see FIG. 12A).

Next, the injection part 4 will be described.
As described above, the injection unit 4 is a part for pouring the extract HW obtained by extracting the drinking component from the tea leaves TL in the extraction unit 3 into a container 41 such as a hot water drink or a server.
Here, FIG. 1 (b), FIG. 9 and FIG. 11 show the tea extraction apparatus 1 (an automatic teapot of the server injection specification) assuming a server as the container 41 for injection, and FIG. The tea extraction device 1 (in other words, an automatic teapot for drinking water injection specifications) is shown.

The tea extraction apparatus 1 of the present invention has the basic structure as described above. Hereinafter, an aspect of extracting a drinking component from the tea leaves TL using this apparatus will be described.
In the extraction, as shown in FIG. 11, for example, as shown in FIG. 11, the hot water adjustment unit 2 is opened, the filter 32 is set in the extraction container 31, and an appropriate amount of tea leaves TL is placed therein. is there. Of course, after such a preparatory work, the hot water adjustment part 2 is closed and the hot water HW can be supplied (poured).

For example, when brewing tea for two people (two cups) with common sencha (one cup), the amount of tea leaves TL is about 4 g and the amount of hot water HW is about 200 ml (milliliter). It is said that the time is about 30 seconds and the hot water cooling temperature is about 70 ° C. to 80 ° C. Therefore, it is preferable to set (determine) the tea leaf amount, the hot water amount, the leaching time, and the hot water cooling temperature based on this. Of course, if the type of tea leaf TL to be applied is different, it is preferable to change these settings and the like. For example, in the case of Gyokuro, it is better to extract carefully with low-temperature hot water HW of about 50 ° C to 60 ° C. Since the components can be extracted, it is preferable to lower the temperature of the hot water cooling HW (lengthen the cooling time of the hot water HW) and lengthen the leaching time by about 2 minutes. For example, in the case of brown rice tea, hojicha, black tea, and some Chinese teas, the hot water HW is extracted with a high temperature hot water, so the hot water during extraction is set to a high temperature of about 90 ° C to 100 ° C. It is preferable.
And about the siphon pipe | tube 33 for extract liquids, an extract discharge start level (maximum height) is suitably adjusted according to the suitable extraction time of the tea leaf TL to apply, for example. In the following description, it is assumed that the tea leaves TL are shallow steamed tea, and the extraction siphon tube 33 is set to the maximum height (extraction liquid discharge start level LC) in order to ensure a long leaching time so as to be suitable for this extraction. It will be described as being set.

(1) Extraction of 1st rice (valve setting)
As described above, in general, the hot water HW for extraction is preferably not the hot water HW but the water-cooled HW with the temperature lowered appropriately. For this reason, when performing the extraction of the first crack, for example, as shown in FIG. 8A, the switching valve 25 of the hot water adjusting unit 2 is closed and the hot water HW is transferred to the hot water feeding siphon tube 22. The road is set so that the water can be naturally cooled and HW can be generated.
Moreover, since the extract HW which extracted the drinking component from tea leaf TL as mentioned above is sent to the siphon tube 33 for extract, the switching valve 35 of the extraction part 3 is also closed (refer Fig.8 (a)).

(2) Supply of hot water to hot water storage container After performing such valve setting, hot water HW (for example, about 100 ° C.) immediately after boiling is poured (supplied) into the hot water storage container 21 from, for example, an electric pot or a bowl. . In addition, the supply amount of hot water HW is an amount corresponding to the amount of tea finally extracted (drinked). Specifically, if you want to extract (inject) only a cup of tea for a cup of water in the end, the amount of hot water should be about one cup of drink, or if you want to extract several cups at a time on the server, The hot water HW also supplies hot water according to the number of cups (for the number of people).

(3) Transfer of hot water into the siphon pipe for hot water supply (liquid level rise)
Since the switching valve 25 is closed, the hot water HW supplied to the hot water storage container 21 is sent into the hot water feeding siphon tube 22 from the lower part of the hot water storage container 21 as shown in FIG. 3 as an example. It gradually rises toward the hot water discharge start level LB. At this time, the liquid level in the hot water feeding siphon tube 22 gradually increases while maintaining the same level as the liquid level in the hot water storage container 21. For this reason, the hot water HW is held in the hot water feeding siphon tube 22 or the hot water storage container 21 without being discharged into the subsequent extraction container 31 until reaching the hot water discharge start level LB in the hot water feeding siphon tube 22. (Retained for an appropriate time).

(4) Siphon action of the hot water feeding siphon tube Thereafter, as shown in FIG. 4 as an example, the liquid level in the hot water feeding siphon tube 22 reaches the hot water discharge start level LB, and this level (maximum height) is reached. If it exceeds, the siphon action of the hot water feeding siphon tube 22 works, and the hot water HW held in the hot water feeding siphon tube 22 or the hot water storage container 21 is discharged toward the extraction unit 3 at once.
For this reason, the supply of hot water HW poured into the hot water storage container 21 is preferably stopped when the liquid level in the hot water feeding siphon tube 22 reaches the hot water discharge start level LB. Of course, even if a large amount of hot water is supplied to the hot water storage container 21, the hot water adjusting unit 2 is provided with the overflow mechanism 6, so that the excess hot water HW passes through the overflow recovery tank 61 and the overflow recovery pipe 62 and is then extracted in the subsequent extraction container. 31 is discharged.

Moreover, while the hot water HW being transferred passes through the hot water feeding siphon tube 22 having a long transfer length formed in a detour shape, heat is mainly dissipated in the detour portion 23 and cooled appropriately. There is a so-called “hot water cooling HW”, which is cooled to about 70 ° C. to 80 ° C. as described above, for example. Of course, the hot water HW is most easily cooled while flowing through the metal bypass portion 23, but is also cooled while being held in the hot water storage container 21, and the hot water feeding siphon tube other than the bypass portion 23. Cooling is also performed while flowing through the lower part 22 (here, the downward transfer part 22D).
In addition, when fins are formed on the outer surface of the hot water feeding siphon tube 22, particularly the bypass portion 23 (so-called fin tube), the heat dissipation of the hot water feeding siphon tube 22 is enhanced even with the same transfer length, and the hot water HW The cooling effect can be further enhanced.

(5) Transfer from the extraction container to the siphon tube for the extraction liquid The hot water cooling HW supplied to the extraction container 31 in this manner is closed as shown in FIG. From the lower portion of the liquid into the siphon tube 33 for the extract. When the water-cooled HW is supplied to the extraction container 31, the tea leaves TL are soaked in the water-cooled HW, so that the water-cooled HW is in the state of tea (extracted liquid HW) extracted from the tea leaves TL. In this state, it reaches the siphon tube 33 for the extract.

(6) Transfer within siphon tube for extract (liquid level rise)
The extract HW in the extract siphon tube 33 gradually rises in the tube toward the extract discharge start level LC, which is the highest height of the tube. In this case as well, the extraction liquid HW in the extraction liquid siphon tube 33 rises while maintaining the same height as the liquid level in the extraction container 31 in the same manner as described above. Therefore, the extraction liquid HW is not discharged (injected) into the subsequent container 41 until the extraction liquid HW reaches the maximum height (extraction liquid discharge start level LC) in the extraction liquid siphon tube 33, and the extraction container 31 and the extraction container 31 are extracted. It is held in the siphon tube 33 for liquid (stays for an appropriate residence time).
Here, this residence time is a leaching time in which the tea leaves TL are soaked in the extract HW, and the longer the leaching time, the more extractable components (extensive) are extracted from the tea leaves TL.

(7) Siphon action of extract siphon tube Thereafter, as shown in FIG. 5, for example, the level of the extract HW rising in the extract siphon tube 33 reaches the extract discharge start level LC. 6, the siphon action of the extract siphon tube 33 works as shown in FIG. 6, and the extract HW staying in the extract siphon tube 33 or the extraction container 31 is immediately set in the injection unit 4. It is discharged (injected) toward the container 41.

(8) Adjustment of Extraction Time As described above, in the tea extraction apparatus 1 of the present invention, an appropriate time is required between the hot water adjustment unit 2 generating the hot water HW and the time of immersing the tea leaves TL in this hot water cool HW. Multiply. That is, the hot water adjusting unit 2 holds the hot water HW for an appropriate time until the hot water HW reaches the hot water discharge start level LB in the hot water feeding siphon tube 22, and the time required for this is defined as a hot water cooling generation time. Further, in the extraction unit 3, the tea leaves TL are cooled in hot water and immersed in the HW for an appropriate time until the extract HW reaches the extract discharge start level LC (maximum height) in the extract siphon tube 33, and this is the leaching time. It is. The sum of these times, that is, the sum of the hot water cooling generation time and the leaching time is almost the tea extraction time.

For this reason, the entire extraction time can be controlled by adjusting one or both of the hot water cooling generation time and the leaching time. Specifically, for example, in the hot water adjustment unit 2, by forming the bypass unit 23 with a longer transfer length, or preparing a plurality of bypass units 23 having different transfer lengths in advance, the longest transfer length is selected from these. By attaching the detour part 23, it is possible to obtain a long time for hot water cooling generation.
Further, for example, in the extraction unit 3, the leaching time can be shortened by lowering the maximum height of the siphon tube 33 for the extraction liquid (for example, the extraction liquid discharge start level LD).
Thus, in the tea extraction apparatus 1 of the present invention, the entire extraction time can be controlled by adjusting one or both of the hot water cooling generation time and the leaching time.

(9) Other method of adjusting hot water cooling generation time Note that the siphon tube 22 for feeding hot water, particularly the bypass portion 23, has a frictional resistance of the hot water HW flowing in the tube wall as the flow diameter for transferring the hot water HW is made thinner. (Flow resistance) increases and the flow rate decreases. For this reason, as for the siphon pipe | tube 22 for hot_water | molten_metal feeding, the one where a flow diameter dimension is narrower takes time to pass here. Therefore, in adjusting the hot water cooling generation time, not only the length of the transfer length but also the diameter of the flow diameter portion can be adjusted. In other words, even in the bypass unit 23 having the same transfer length, the hot water cooling generation time can be secured longer as the flow diameter is smaller.
Further, as another method for adjusting the hot water cooling generation time, for example, it is conceivable to provide a flow rate adjusting valve in the descending transfer portion 22D of the hot water feeding siphon tube 22 to adjust the amount (speed) of the hot water HW flowing down.

(10) Other methods of adjusting the leaching time The leaching time in the extraction unit 3 can also be adjusted by the length of the transfer length of the siphon tube 33 for the extract. For example, when it is desired to increase the leaching time For example, by forming a part of the siphon tube 33 for the extraction liquid in a detour shape, it is possible to flow the entire transfer length.
Of course, the length of time of the hot water cooling generation time in the hot water adjusting unit 2 can be adjusted by changing the maximum height of the siphon tube 22 for hot water feeding, for example.

Next, an extraction mode in the case of performing extraction after the second rice crack using the tea leaves TL after extracting the first rice crack will be described.
(11) Extraction after the second decoction Since hot water HW is suitable for the extraction after the second decoction and it is not necessary to generate the water-cooled HW, for example, as shown in FIG. The switching valve 25 of the adjustment unit 2 is opened, a flow path is set so that the hot water HW is transferred to the bypass short pipe 24, and hot water (hot water) is supplied to the extraction unit 3 as it is.

Further, in the extraction after the second decoction, the tea leaves TL are already immersed in the hot water HW by the extraction of the first decoction, etc., and the drinking components are easily eluted from the tea leaves TL. It is common to do. Therefore, for example, the switching valve 35 of the extraction unit 3 is closed (see FIG. 8A), and the hot water HW supplied from the hot water adjustment unit 2 is transferred to the siphon pipe 33 for the extract, but the maximum height is It is possible to set a low level (for example, extraction liquid discharge start level LD) so that the leaching time is shorter than the first spot. As a result, in the extraction container 31, after the leaching time shorter than the first crack has elapsed, the extraction liquid HW is discharged to the container 41 through the extraction liquid siphon tube 33.
In this case, the extraction time is strictly the sum of the time during which the hot water HW passes (falls) the hot water adjusting unit 2 and the leaching time, but since the passing time of the hot water adjusting unit 2 is extremely short, the leaching time is almost the same. You can think that it will be the extraction time.
Of course, depending on the water content of the tea leaves TL, the switching valve 35 of the extraction unit 3 is opened (see FIG. 8B), almost without leaching time (without staying in the extraction container 31), It is also possible to inject the extract HW into the container 41 almost as it is. In this case, the hot water HW is discharged to the injection unit 4 immediately after coming into contact with the tea leaves TL. Incidentally, in this case, the extraction liquid HW hardly stays in the extraction container 31, so that the total extraction time is extremely short.

(12) Negative pressure discharge It should be noted that in the extraction after the second crack, even if a slight amount of hot water HW remains in the hot water feeding siphon tube 22 in the previous extraction, it can be discharged. The inside of the siphon tube 22 for use can be maintained in a sanitary manner. That is, for example, when hot water HW remains in the hot water feeding siphon tube 22 at the first run, if the second hot water HW flows through the bypass short tube 24, a negative pressure is generated in the hot water feeding siphon tube 22. For this reason, the hot water HW remaining in the hot water feeding siphon tube 22 at the time of discharging the second rice can be discharged together.

(13) Discarding the tea husk After several extractions in this manner, the tea husk TL is discarded. In this disposal, for example, as shown in FIG. 11, the hot water adjusting unit 2 is again opened and the tea leaves TL can be taken out.
Here, if the filter 32 can be repeatedly used, for example, in the form of a wire mesh, the tea shell TL is taken out together with the filter 32, and the tea shell TL remaining in the filter 32 is discarded, for example, as garbage, and the filter 32 is made of water or the like. Wash.
In addition, when the tea container TL is provided with the tea container squeezing mechanism 7, the tea container TL can be discarded together with the filter 32 after squeezing out the moisture of the tea container TL using this. In some cases, the water can be easily removed without dropping from the tea husk TL.

[Other Examples]
The present invention has the above-described embodiment as one basic technical idea, but the following modifications can be considered.
First, in the basic embodiment described above, it is assumed that hot water HW immediately after boiling is poured into the hot water storage container 21, and based on this assumption, a hot water feeding siphon tube 22 (bypassing portion 23) for generating hot water cooling HW is assumed. However, for example, when a relatively low temperature hot water HW is injected, or when the outside air temperature is extremely low and the hot water HW is simply put into the hot water storage container 21, a hot water cooling HW of a desired temperature is formed. If possible, it is also possible to open the switching valve 25 (see FIG. 8B) and send the hot water HW to the extraction unit 3 without passing through the hot water feeding siphon tube 22 even if it is the first stitch. It is.

Further, in the basic embodiment described above, when the tea leaf TL is set in the tea extraction device 1 for extraction or when the tea husk TL is taken out from the tea extraction device 1 after the extraction, the hot water adjustment unit 2 is opened and closed. However, for example, as shown in FIG. 12A, it is also possible to adopt a structure in which the filter 32 is exposed, that is, a structure in which the filter 32 can be directly accessed from the outside of the apparatus. In this case, it is not necessary to open and close the hot water adjusting unit 2 each time the tea leaf TL is set to the tea extraction device 1 or the tea husk TL is taken out, and the filter 32 can be easily detached from the tea extraction device 1 alone. Can do.
Further, it is more preferable that the entire extraction unit 3 (in FIG. 12A, the extraction container 31, the filter 32, and the siphon tube 33 for the extraction liquid) can be easily detached from the tea extraction device 1. This is because the extraction component 3 extracts the drinking component from the tea leaf TL for the first time, and this extract HW passes through the extraction unit 3 (others the hot water HW flows), and the extraction unit 3 is most dirty with tea astringent. That is, by making the entire extraction unit 3 easily detachable from the tea extraction device 1, during cleaning, the entire extraction unit 3 is removed from the tea extraction device 1 and dirt (tea astringency) adhering to the extraction unit 3 is removed. It can wash out reliably, and the hygiene state of the extraction part 3 and hence the tea extraction apparatus 1 can be maintained at a high level by doing in this way.
Further, the filter 32 does not necessarily have to be formed in a container shape that can accommodate the tea leaves TL. For example, as shown in FIG. 12B, the filter 32 itself is formed in a protruding shape and extracted. The bottom of the container 31 can be erected so as to cover the outlet of the extract HW.

Further, in the basic embodiment described above, the detour portion 23 in the hot water adjusting portion 2 is formed in the ascending transfer portion 22U of the siphon tube 22 for hot water feeding. For example, as shown in FIG. It is also possible to form both the transfer part 22U and the descending transfer part 22D. In this case, the transfer length of the siphon tube 22 for hot water feeding can be secured longer, and this is suitable when it is desired to generate a lower temperature hot water cooled HW.
Of course, such a detour part 23 can also be formed only in the descending transfer part 22D of the siphon pipe 22 for hot water feeding, as shown in FIG. 13 (b), for example.
Further, for example, as indicated by a broken line in FIG. 13A, a path (this is referred to as a direct path 221) through which the hot water HW flows almost directly from the hot water discharge start level LB to the extraction unit 3 can be added. In this case, the hot water HW that has risen up the ascending transfer unit 22U can be selectively flowed from the hot water discharge start level LB to the descending transfer unit 22D or the direct path 221 by a valve operation (flow path switching operation). The temperature of the hot water can be adjusted. Specifically, the direct path 221 is selected when it is desired to obtain high temperature hot water cooling, and the descending transfer unit 22D having the detour part 23 is selected when desired to obtain low temperature hot water cooling. In addition, the code | symbol 253 in a figure is the switching valve provided in the downward transfer part 22D, and the code | symbol 254 is the switching valve provided in the direct path | route 221. FIG. Of course, such switching valves 253 and 254 are not necessarily provided separately in each path, and for example, a single three-way valve can be used instead, and the path of the hot water HW can be selectively switched by this three-way valve.

Further, for example, when different colors of thermo ink are applied to the ascending transfer unit 22U and the descending transfer unit 22D of the hot water feeding siphon tube 22, the hot water HW flowing through the hot water feeding siphon tube 22 is gradually cooled. For the user, it can be visually observed as a color change, and the tea extraction can be enjoyed not only by the scent but also by the color. In particular, green tea develops into a beautiful green color by extraction, and a beautiful impression can be obtained just by making it visible, so if the change in hot water becomes visible by color, coupled with the aroma at the time of extraction. This will produce a time when the extraction will be more enjoyable. In order to enjoy the extraction even when the color changes, it is desirable to form the casing 11 of the tea extraction device 1 with a transparent material such as glass or acrylic resin.
Of course, the material of the housing 11 is not limited to such a material. For example, the housing 11 can be formed of a wooden material. This is because tea and wood are typical of Japanese. Of course, if the housing 11 is made of wood, the warmth of the wood can be given not only to the appearance but also when the user touches it with the hand. Furthermore, as a material of the casing 11, ceramics (ceramics) applied to a normal teapot can be applied. In this case, it can be said that the material matches tea.

  Moreover, since the pipe itself becomes high temperature due to the hot water HW passing through the inside during extraction, the hot water feeding siphon pipe 22 is formed, for example, in the shape of a rounded portion 23 (when the upper portion is narrowed) If the hot water is covered here, the hot water can be warmed using the waste heat of the hot water flowing through the hot water feeding siphon tube 22. This is an effective waste heat utilization of the hot water HW flowing in the hot water feeding siphon tube 22, but it can be said that warming the hot water itself is suitable for the original method of brewing tea and is desirable. Incidentally, in such a case, the container 41 into which the tea extracted in the tea extraction device 1 is finally poured is preferably a server.

  Further, the hot water feeding siphon tube 22 and the extract siphon tube 33 are not necessarily formed as a single serial transfer path. For example, the hot water feeding siphon tube 22 is formed by a plurality of pipes. It is also possible to configure as a parallel transfer path in which the flow resistance is changed.

TL tea leaves / tea husk HW hot water / hot water / cooled water / extract (tea)
LA overflow start level LB hot water discharge start level LC extract discharge start level (for long-term leaching)
LD extract discharge start level (for short leaching)

DESCRIPTION OF SYMBOLS 1 Tea extraction apparatus 2 Hot water adjustment part 3 Extraction part 4 Injection | pouring part 6 Overflow mechanism 7 Tea squeezing mechanism 8 Level adjustment mechanism

1 Tea Extractor 11 Case 12 Handle

2 Hot water adjustment part 21 Hot water storage container 22 Siphon pipe for hot water feeding 22U Ascending transfer part (outward path)
22D Lowering transfer part (return trip)
221 Direct path 23 Bypass section 24 Bypass short pipe 25 Switching valve 251 Switching valve 252 Switching valve 253 Switching valve 254 Switching valve 26 Lid 28 Reverse U-shaped siphon tube

DESCRIPTION OF SYMBOLS 3 Extraction part 31 Extraction container 31F Flat wall surface 31B Bellows wall surface 32 Filter 32C Claw 33 Extraction siphon tube 33J Joint (angle adjustment joint)
34 Bypass short pipe 35 Switching valve 36 Rotating fulcrum

4 injection part 41 container

6 Overflow mechanism 61 Overflow recovery tank 62 Overflow recovery pipe

7 Tea squeezing mechanism 71 Lever 72 Rotating fulcrum

Claims (6)

A hot water storage container having an appropriate capacity, an extraction container for extracting drinking components from tea leaves received from the hot water storage container, and a hot water feeding siphon tube for transferring hot water from the hot water storage container to the extraction container; In the tea extraction device comprising
The hot water feeding siphon tube is provided with a bypass part at least in part, and the hot water is transferred by the hot water feeding siphon pipe having the bypass part, thereby reducing the temperature of the hot water. Tea extraction equipment.
The tea extraction apparatus according to claim 1, wherein the detour portion is formed of a metal material having excellent thermal conductivity.
The tea extraction device according to claim 1 or 2, wherein the detour portion is formed in an ascending transfer portion where the hot water feeding siphon tube reaches a hot water discharge start level which is a maximum height.
As a path for transferring hot water from the hot water storage container to the extraction container, in addition to the hot water feeding siphon pipe, a bypass short pipe having a short transfer length is provided in parallel with the hot water feeding siphon pipe,
4. The tea extraction according to any one of claims 1 to 3, further comprising a switching valve for transferring hot water from the hot water storage container to either the hot water feeding siphon pipe or the bypass short pipe. apparatus.
In the subsequent stage of the extraction container, an extraction liquid siphon tube is provided for injecting the extraction liquid extracted from tea leaves into a container such as a cup of water.
The tea extraction device according to any one of claims 1 to 4, wherein the siphon tube for extraction liquid is configured to be able to change an extraction liquid discharge start level at a maximum height.
After supplying hot water to the hot water storage container, this hot water is sent to a subsequent extraction container through a siphon tube for feeding hot water, and then cooled to the subsequent extraction container, where the tea leaves are leached into the hot water and the drinking ingredients are extracted from the tea leaves. In the tea extraction method in which the extract is sent to the subsequent injection portion through the extract siphon tube and injected into a container such as a hot water drink,
During the transfer of hot water by the siphon tube for hot water feeding, it takes an appropriate hot water cooling generation time,
Further, during the transfer of the extract by the siphon tube for the extract, an appropriate leaching time is required,
A tea extraction method, wherein the whole extraction time is controlled by adjusting one or both of the hot water cooling generation time and the leaching time.

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