JP2019080795A - Hot water server and hot water supply processing tool - Google Patents

Abstract

To easily supply hot water at an optimum temperature of 47-63°C for gyokuro (refined green tea).SOLUTION: When a hot water temperature is a high temperature exceeding 63°C, a shape-memory spring 11 is put into a shortened state so as to close a channel 6. When the hot water temperature reaches 63°C, the shape-memory spring 11 is put into a stretched state so as to open the channel 6. These operations make the hot water at a desired temperature flow down.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a hot water feeder and a hot water supply processing tool. Specifically, the present invention relates to a hot water supply device and a hot water supply processing tool capable of easily supplying hot water at a desired temperature.

  Conventionally, factors that determine the taste of Japanese tea include "hot water", "extraction time", and "how to drink", among which "hot water" is the most important, and for each type of Japanese tea It is known that there is a range of hot water temperature suitable for obtaining a delicious taste (hereinafter referred to as "the proper hot water temperature range").

  The appropriate hot water temperature range is, for example, 47 ° C. or higher and 63 ° C. or lower for Gyokuro, 67 ° C. or higher and 83 ° C. or lower for Sencha, and “bitterness (tannin or caffeine etc.) Astringent ingredients "Leach". On the other hand, at a bath temperature within the proper bath temperature range (hereinafter referred to as "the appropriate temperature"), "umami components" such as theanine, which is a kind of amino acid, leach out, and the above-mentioned bitterness component hardly leaches out.

  Therefore, in order to make tea with appropriate temperature water, the temperature is transferred to a cup or teapot at normal temperature a specified number of times, and the temperature is lowered to the appropriate temperature (hereinafter referred to as "hot water cooling method") The water temperature is checked visually using a water temperature gauge until it drops (hereinafter referred to as "temperature measurement method").

  Furthermore, the water in the water storage tank is heated using a heater, a temperature sensor, a hot water temperature control device, etc. like an electric pot or an automatic tea feeder, and the heated water is taken out from the water storage tank and made into hot water of an appropriate temperature. Techniques related to a water heater to be sent out to the outside are known (see, for example, Patent Documents 1 and 2).

  In addition, there is also known a technology related to a coffee extraction tool including a cartridge formed by covering the upper surface of a dish-like filter containing coffee powder inside with a special film that melts at a predetermined temperature (for example, patent Reference 3).

  According to this technique, the special film in contact with the water is melted at a predetermined temperature by the heated water by mounting the cartridge on the bottom of the dripper and injecting water and heating it with a microwave oven etc. Is open, and the hot water enters the cartridge through the opening and is poured into coffee powder to extract coffee. And by replacing with this coffee powder and accommodating a tea leaf in a cartridge, application also to a tea-drinking becomes possible.

Japanese Patent Application Laid-Open No. 7-303565 Unexamined-Japanese-Patent No. 2013-236691 Japanese Utility Model Application Publication No. 63-153927

  However, in the hot water cooling method, a difference in temperature drop occurs due to the difference in capacity, material, thickness and the like of cups and teapots, and it is difficult to lower the hot water accurately to the appropriate temperature. Furthermore, it may be necessary to transfer the cup many times in order to lower the hot water to a suitable temperature, in which case the burden on the user is large.

  Further, in the temperature measurement method, it is necessary to continuously monitor the temperature display of the water temperature gauge by visual observation until the water temperature drops to an appropriate temperature. For this reason, the temperature of the hot water may be largely deviated from the appropriate temperature by mistaken temperature, and it is difficult to make the temperature of the hot water fall down to the appropriate temperature with high accuracy. Furthermore, the user's burden is heavy because of constant monitoring by visual observation.

  Further, in the water heater as described above, for example, a temperature sensor is provided in the vicinity of the heater provided at the bottom of the inner container which is a water storage tank in the case of an electric pot, and a heater at the bottom of the water storage tank in the case of an automatic water dispenser On the other hand, the temperature sensor is provided on the outer peripheral surface of the water storage tank apart from the heater, and in any of the water heaters, hot water temperature control based on the temperature of the hot water in the actual pouring spout is not performed. For this reason, it is difficult to supply the hot water which is set to a predetermined temperature with high accuracy because the temperature of the hot water to be supplied varies widely. Furthermore, if the hot water heated once is kept warm for a long time like a water storage tank, the taste of the tea is greatly deteriorated if the hot water is used for making hot water with this hot water.

  Moreover, in the above-mentioned coffee extraction tool, the special film is melted with hot water of a predetermined temperature, and since the settable hot water temperature is one point, local hot water before the entire hot water temperature in the dripper drops to the predetermined temperature The special film may dissolve due to the temperature drop, and it is difficult to lower the hot water to the appropriate temperature with high accuracy.

  The present invention has been made in view of the above points, and it is an object of the present invention to provide a hot water supply device and a hot water supply processing tool capable of easily supplying hot water of a desired temperature.

  In order to achieve the above object, the hot water feeder according to the present invention injects and stores hot water, and a hot water feeder main body in which an outlet through which the hot water flows down is formed, and a flow communicating with the outlet. A valve body capable of opening and closing a path, and a shape memory material for moving the valve body by utilizing a shape memory effect according to the temperature of the hot water in contact with the shape memory material is 47 ° C. or more and 63 ° C. or less, Alternatively, any one of 67 ° C. or more and 83 ° C. or less is in the operating temperature range, and the valve is closed when the temperature of the contacting hot water exceeds the operating temperature range to close the flow path and the temperature of the contacting hot water is And a valve mechanism configured to open at the operating temperature within the operating temperature range and open the flow path.

  Further, in order to achieve the above object, the hot water feeder according to the present invention injects and stores hot water and communicates with the hot water feeder main body in which an outlet through which the hot water flows down is formed, and the outlet. A valve body capable of opening and closing the flow path, and a shape memory material for moving the valve body using a shape memory effect according to the temperature of the hot water in contact with the temperature of the hot water in contact with the shape memory The valve is closed and the flow path is closed when the temperature is higher than the predetermined operating temperature range of the material, and the temperature of the contacting hot water is configured to open and open the flow path at the operating temperature within the operating temperature range. And a valve mechanism.

  Furthermore, in order to achieve the above object, the hot water supply treatment tool of the present invention injects and stores hot water, and a hot water supply main body having an outlet through which the hot water flows down, and the outlet. A valve body capable of opening and closing a communicating flow path, and a shape memory material for moving the valve body by using a shape memory effect according to the temperature of the hot water in contact with the shape memory material is 47 ° C. or higher. C. or less, or one of 67.degree. C. and 83.degree. C. as an operating temperature range, and closes the flow path when the temperature of the hot water coming in contact with the hot water exceeds the operating temperature range to close the flow path and contact the hot water The valve mechanism is configured to open at the operating temperature within the operating temperature range to open the flow path, and to be able to accommodate an object to be processed by being exposed to hot water flowing down from the outlet, And when it is configured to be attachable to the hot water feeder main body , And a processing plug discharged hot water is strained after processing the processing object.

  Here, according to the temperature of the hot water supply main body in which the hot water is injected and stored, and the outlet which the hot water flows down is formed, the valve body which can open and close the flow passage communicating with the outlet, and the hot water in contact By providing the valve mechanism having the shape memory material for moving the valve body by utilizing the shape memory effect, it is possible to supply the hot water precisely set to the desired temperature downward. That is, when the hot water injected into the hot water feeder main body comes in contact with the shape memory material, the shape memory material is restored to a predetermined shape with high temperature response, and the valve body moves by this restoring force and the flow path to the outlet When the hot water in contact with the hot water reaches a desired temperature, the flow path is rapidly opened to allow the hot water to flow down from within the hot water feeder main body through the flow path and the outlet.

Further, when the shape memory material has any one of 47 ° C. to 63 ° C. or 67 ° C. to 83 ° C. as the operating temperature range, it is possible to supply hot water suitable for jade dew or sencha.
That is, the operating temperature range of the shape memory material is made to match either one of 47 ° C. or more and 63 ° C. or less, which is the proper boiling temperature range of bead dew, or 67 ° C. or more and 83 ° C or less, which is the proper boiling temperature range of Sencha. When the hot water reaches an appropriate temperature within the proper range of hot water of Onyo or Sencha, the shape memory material operates with the hot water in contact, the valve moves, the flow path opens, and the hot water can flow down from the outlet. is there.

  The temperature of hot water is 63 ° C in the case of setting Gyoyu with a suitable temperature range of 47 ° C or more and 63 ° C or less, by blocking light on the leaves and suppressing photosynthesis to increase the theanine of the umami component. Exceeding, "Bitterness (astringent) component" such as tannin and caffeine exudes a lot, and the original "umami" of Gyokuro can not be obtained, and cups and teapots made of low heat resistant material are hot water It is because it may be thermally deformed. On the other hand, if the water temperature is less than 47 ° C, tannin and caffeine are difficult to leach out, but the theanine also has a small leaching amount, and the natural umami taste of Gyokuro becomes thin, and sterilization to a cup or teapot with hot water It is because the action also decreases.

  In addition, to set the appropriate temperature range of Sencha to 67 ° C or more and 83 ° C or less, light is sufficiently applied to the leaves to promote photosynthesis, and the tannin of the astringent component is appropriately blended with the theanine of the umami component In the case of sencha, when the water temperature exceeds 83 ° C, the leaching amount of "bitter (stirring) components" such as tannin and caffeine is too large, and the "good astringency" inherent to sencha can not be obtained, and heat resistance Cups and teapots made of low-grade materials may be thermally deformed by high-temperature water. On the other hand, if the hot water temperature is less than 67 ° C., the leaching amount of tannin or caffeine is too small, so the "good astringency" inherent to Sencha becomes thin, and the sterilizing effect on the cup or teapot by hot water also decreases. It is.

Furthermore, the valve is closed to close the flow path when the temperature of the contacting hot water exceeds the operating temperature range, and the flow path is closed when the temperature of the contacting hot water is within the operating temperature range. The valve mechanism can reduce the work load on the user.
That is, when the hot water injected into the hot water feeder main body is higher than the operating temperature range that matches the proper hot water temperature range, the hot water is not supplied downward from the hot water feeder main body while the flow path is closed. When the hot water is cooled to the outside air temperature and falls to the operating temperature within the proper hot water temperature range with the passage of time, the flow path naturally opens and the hot water is supplied downward from the hot water feeder body. Therefore, it is not necessary to transfer the cup many times as in the hot water cooling method, and to continuously monitor the temperature display continuously as in the temperature measurement method, thereby reducing the work load on the user.

  The operating temperature range is more preferably 50 ° C. or more and 60 ° C. or less, or 70 ° C. or more and 80 ° C. or less.

  This is because, in the case of Gyokuro, when the water temperature exceeds 60 ° C., tannin and caffeine are still abundant, and miscellaneous taste is felt in the natural umami of Gyokuro. On the other hand, if the temperature of the hot water is less than 50 ° C., the amount of leaching of theanine is still small, and therefore, depending on the amount of tea leaves, “umami” may not be ensured.

  In the case of Sencha, when the temperature exceeds 80 ° C., tannins and caffeine are still abundant, so miscellaneous taste can be felt in the “good astringency” inherent to Sencha. On the other hand, if the hot water temperature is less than 70 ° C., the amount of leaching such as tannin and caffeine is still small, so that depending on the amount of tea leaves, “somewhat good astringency” may not be secured.

  In addition, it becomes possible to respond | correspond also besides the above-mentioned Gyokuro and an Sencha by making the operation temperature range of a shape-memory material correspond with the appropriate hot-water temperature range of various Japanese tea. Furthermore, the present invention may be applied to other than Japanese tea (for example, coffee, soup, etc.).

In addition, the shape memory material has a sensing unit for sensing hot water by contacting hot water, and the sensing unit is in the vicinity of the position where the low laminar flow flowing along the inner bottom surface of the hot water feeder flows into the outlet. If provided, it can be expected to further improve the setting accuracy to the desired temperature.
That is, the temperature of the hot water in the vicinity of the outlet is directly sensed by the sensing unit, and the shape memory material is restored to a predetermined shape based on the temperature of the hot water just before flowing down from the outlet. Therefore, it can be expected that the setting accuracy to the desired temperature is further improved.

  Further, the valve mechanism is provided with a partition member in which the flow outlet is formed so as to be able to close the outlet, and the flow path is formed, and is configured to open and close the flow path by moving the valve body with respect to the partition member. In this case, the valve mechanism can be simplified and made compact, and the device cost and the running cost can be reduced.

  In addition, the valve mechanism has a columnar inner column portion disposed inside as a partition member, and a cylindrical outer pipe portion disposed outside as a valve body, and the convex provided on the outer periphery of the inner column portion A shape memory material, a shape memory spring, is wound around an inner column portion in one of the spaces formed between the sliding portion and the sliding direction front and rear ends of the outer pipe portion, and the return spring is In the case where the outer tube portion is configured to be slidable relative to the inner post portion by the restoring force of the shape memory effect of the shape memory spring and the elastic force of the return spring by being wound and disposed on the post portion. The valve mechanism can be configured as a multiple pipe (including a double pipe) having an inner column portion and an outer pipe portion, and the valve mechanism can be further miniaturized.

  Furthermore, in the case where at least a portion near the valve mechanism in the hot water feeder main body is made transparent or translucent, or when the hot water feeder main body is provided with an upper opening, sliding against the inner column portion of the outer tube portion as the valve body The appearance change accompanying with can be visually recognized from the outside, and opening and closing of a flow path can be easily grasped as an appearance change of a valve, or the appearance change of this valve can be enjoyed as an aesthetic change.

  In addition, the valve mechanism has a cylindrical outer pipe portion disposed outside as a partition member and a columnar inner column portion disposed inside as a valve body, and the convex provided on the outer periphery of the inner column portion A shape memory material, a shape memory spring, is wound around an inner column portion in one of the spaces formed between the sliding portion and the sliding direction front and rear ends of the outer pipe portion, and the return spring is When the inner column portion is configured to be slidable relative to the outer tube portion by the restoring force of the shape memory effect of the shape memory spring and the elastic force of the return spring by being wound and disposed on the column portion. The valve mechanism can be configured as a multiple pipe (including a double pipe) having an inner column portion and an outer pipe portion, and the valve mechanism can be further miniaturized.

  Furthermore, in the case where at least a portion near the valve mechanism in the hot water feeder main body is made transparent or translucent, or when the hot water feeder main body is provided with an upper opening, sliding of the inner column as a valve body with respect to the outer tube The appearance change accompanying with can be visually recognized from the outside, and opening and closing of a flow path can be easily grasped as an appearance change of a valve, or the appearance change of this valve can be enjoyed as an aesthetic change.

  Further, the valve mechanism has a case body disposed as a partition member and a slide piece disposed inside the case body as a valve body, and the sliding direction end face of the slide piece and the sliding direction of the inside of the case body A shape memory spring, which is a shape memory material, is disposed in one of the spaces formed between the front and rear surfaces, and a return spring is disposed in the other of the spaces, thereby restoring force by the shape memory effect of the shape memory spring. When the slide piece is configured to be slidable with respect to the case body by the elastic force of the return spring and the return spring, the valve mechanism can be configured in an integrated structure in which the slide piece is accommodated in the case body. Further compactness of the valve mechanism can be achieved.

  Furthermore, in the case where at least a portion near the valve mechanism in the hot water feeder main body is made transparent or translucent, or when the hot water feeder main body is provided with an upper opening, the sliding piece as a valve body is accompanied by the sliding relative to the case body. The appearance change can be visually recognized from the outside, and the opening and closing of the flow path can be easily grasped as the appearance change of the valve body, or the appearance change of the valve body can be enjoyed as the aesthetic change.

  In addition, the valve mechanism includes a plate body disposed as a partition member and a bending piece disposed on the outlet side of the plate body as a valve body, and the bending piece includes a shape memory spring of which the shape memory is used. When at least a part of the bending piece is configured to be bendable with respect to the plate body by the restoring force by the shape memory effect of the shape memory spring and the water pressure by which the bending piece is pushed to the outlet side by the hot water In addition, the valve body and the shape memory material are integrated, and a member such as a return spring can be omitted by utilizing the water pressure to push the shape memory material to balance in a predetermined open position, Further compactness of the valve mechanism can be achieved.

  Furthermore, in the case where at least a portion near the valve mechanism is made transparent or translucent in the hot water feeder main body, or when the hot water feeder main body is provided with an upper opening, the appearance of the bending piece as the valve body with bending to the plate body. The change can be visually recognized from the outside, and the opening and closing of the flow path can be easily grasped as the appearance change of the valve, or the appearance change of the valve can be enjoyed as the aesthetic change.

  The hot water supply apparatus and the hot water supply treatment tool of the present invention can easily supply hot water at a desired temperature.

It is a schematic diagram (1) for demonstrating the whole structure of an example of the hot-water supply apparatus of this invention. It is a schematic diagram (2) for demonstrating the whole structure of an example of the hot water supply apparatus of this invention. It is a schematic diagram for demonstrating the valve mechanism of 1st Embodiment. It is a schematic diagram for demonstrating the valve mechanism of 2nd Embodiment. It is a schematic diagram for demonstrating the valve mechanism of 3rd Embodiment. It is a schematic diagram for demonstrating the valve mechanism of 4th Embodiment. It is a schematic diagram for demonstrating the modification of this invention.

Hereinafter, modes for carrying out the invention (hereinafter, referred to as “embodiments”) will be described with reference to the drawings. The description will be made in the following order.
1. First Embodiment Second Embodiment Third Embodiment Fourth Embodiment Modified example

<1. First embodiment>
[Description of the overall configuration]
1 (FIG. 1 (a) is a perspective view, FIG. 1 (b) is a front sectional view) and FIG. 2 (FIG. 2 (a) is a perspective view, FIG. 2 (b) is a front sectional view) applies the present invention It is a schematic diagram for demonstrating an example of the hot-water supply apparatus, The dripper 1 (an example of a hot-water supply apparatus) shown here is equipped with the dripper main body 4 (an example of a hot-water supply apparatus main body) and the valve mechanism 5. .

  Here, the dripper main body 4 is formed in a truncated cone shape with an enlarged diameter upward, and hot water can be injected and stored from the upper opening 4a. Further, a cylindrical projecting portion 4b is vertically provided from substantially the center in plan view of the dripper main body 4, and an outlet 4d is formed (pierced) at a lower end (tip end) portion of the projecting portion 4b.

  Further, the valve mechanism 5 opens and closes (opens and closes) a flow passage 6 (not shown in FIGS. 1 and 2) communicating with the outlet 4 d of the dripper main body 4.

  Then, the projection 4b of the dripper body 4 is inserted from above into the upper opening of each of the cup 2 (see FIG. 1) and the teapot 3 (see FIG. 2), whereby the dripper body 4 is placed on the cup 2 or teapot 3 Can be stably placed on the

  In the dripper 1 configured in this manner, the hot water injected from the upper opening 4a is allowed to flow down from the outlet 4d, and the hot water is poured into the tea leaves (Gyokuro in this embodiment) 15 accommodated in the cup 2 or teapot 3 It is possible to make a cup of tea by supplying it.

[Description of valve mechanism]
FIG. 3 (a) is a schematic view for explaining an example of the valve mechanism of the hot water feeder to which the present invention is applied, and the valve mechanism 5 shown here is a hollow columnar inner column 9 arranged inside and And a cylindrical outer pipe portion 8 disposed outside the inner column portion 9 as a valve body.

  In FIGS. 3 (a) and 3 (b), the front right view shows a side cross sectional view in the valve open state, and the front view left view shows a side cross sectional view in the valve closed state.

Here, the inner column portion 9 is fixed to the dripper body 4 as a partition member.
Specifically, a disk-like seal member 14 such as a packing is inserted into and fixed to the protrusion 4b of the dripper body 4 from above, and a groove is provided on the side surface of the vertical through hole 14a of the seal member 14 ing. The inner pillar portion 9 is fixed to the dripper main body 4 by engaging the groove portion with the uneven portion 9 a provided at the lower portion of the inner pillar portion 9.

  Further, a ridge-like convex portion 9b is formed on the outer periphery in the vertical direction of the inner columnar portion 9, and the inner columnar portion 9 is penetrated in the radial direction between the convex portion 9b and the concavo-convex portion 9a. A cylinder flow passage 9c is formed.

Furthermore, the outer tube portion 8 is on the common axial center 13 with the inner column portion 9, and the upper sliding frame 8a is folded in the upper portion of the cylinder inward and downward, and the lower portion of the cylinder is folded inward and upward And a lower sliding frame 8b. The upper sliding frame 8 a is fitted on the outer periphery of the inner column 9 so as to be slidable on the outer periphery above the convex 9 b, and the lower sliding frame 8 b is lower than the convex 9 b of the inner column 9. The outer periphery is fitted so as to be slidable.
The lower end of the outer tube portion 8 abuts on the upper surface of the seal member 14 to define the lower limit position of the outer tube portion 8.

Further, the space surrounded by the peripheral wall 8 c constituting the outer periphery of the outer pipe portion 8, the upper sliding frame 8 a, the lower sliding frame 8 b and the outer peripheral surface of the inner column 9 is a convex portion of the inner column 9 An upper space 16 formed above 9b (in other words, between the projection 9b and the upper inner end 8d) and below the projection 9b of the inner column 9 (in other words, the projection 9b and the lower inside And the lower space 17 formed between the end 8e).
Then, in the upper space 16, the return spring 10 is wound around the inner pillar portion 9 in a compressed state. In the lower space 17, a shape memory spring 11 (an example of a shape memory material) is wound around the inner column portion 9.

  Further, a plurality of outer holes 8f penetrating in the radial direction in the circumferential wall 8c are provided in parallel in the vertical direction, and an inner hole 8g penetrating in the lower sliding frame 8b from the lower space 17 diagonally inward and downward.

Here, by utilizing the shape memory effect according to the temperature of the hot water in contact with the shape memory spring 11, the outer pipe portion 8 which is a valve body is moved, and the flow path 6 can be opened and closed.
That is, when the hot water injected into the dripper body 4 comes in contact with the shape memory spring 11, the shape memory spring 11 is restored to a predetermined shape (shortened shape or extended shape in this embodiment) with high temperature response. The force moves the outer pipe portion 8 to open and close the flow path to the outlet 4 d. Therefore, when the contacting hot water reaches a desired temperature, the flow path 6 opens rapidly, and the hot water can flow down from inside the dripper body 4 through the outlet 4 d.

  Then, in the present embodiment, the operating temperature range of the shape memory spring 11 is made to coincide with 47 ° C. or more and 63 ° C. or less, which is the proper hot water range of Gyokuro. That is, when the temperature of the hot water in contact with the shape memory spring 11 exceeds the operating temperature range (high temperature exceeding 63 ° C.), the valve mechanism 5 closes to close the flow path and contact the shape memory spring 11 When the temperature is within the operating temperature range (temperature of 47 ° C. or more and 63 ° C. or less), the valve mechanism 5 is opened to open the flow path. Note that, in the valve mechanism 5 of the present embodiment, the valve opening state is maintained even at a low temperature below the operating temperature range (a low temperature below 47 ° C.).

  The shape memory spring 11 may be configured so as to be able to sense the temperature of the hot water as a whole, or sense the temperature of the hot water only at portions contacting the low laminar flow (described later) 18 flowing along the inner bottom surface of the dripper main body 4 It may be configured as possible. Further, the form of the sensing unit is not particularly limited as long as the temperature of the low laminar flow 18 can be reliably detected.

[Operation explanation]
In the dripper 1 of the present embodiment, the shape memory spring 11 of the lower space 17 is shortened as shown in the right figure of FIG. Therefore, the elastic force of the return spring 10 in the upper space 16 pushes up the upper inner end 8d of the outer tube 8 starting from the convex portion 9b of the inner column 9, and the return spring 10 is in an extended state. As a result, the upper end of the outer tube portion 8 is in a state of projecting upward from the upper end of the inner column portion 9 (hereinafter, referred to as “projected state”).

  In this projecting state, the outer pipe portion 8 is pushed up, the lower sliding frame 8b of the outer pipe portion 8 is positioned above the inner cylinder flow passage 9c of the inner column portion 9, and the inner cylinder flow passage 9c is opened. The Rukoto. Further, the inner cylinder flow passage 9c communicates with the lower space 17 through the inner hole 8g.

  In this projecting state, when hot water immediately after boiling is poured into the dripper main body 4 from the upper opening 4a, low temperature laminar flow 18 in which high temperature hot water (hot water exceeding 63 ° C.) flows along the inner bottom surface 4c of the dripper main body 4 As a result, it flows into the lower space 17 through the outer hole 8 f and contacts the sensing portion of the shape memory spring 11.

  Then, when the low laminar flow 18 contacts the shape memory spring 11, as shown in the left view of FIG. 3A, the shape memory spring 11 in the lower space 17 resists the elastic force of the return spring 10 by its restoring force. Stretch and become stretched. Therefore, the lower inner end 8e of the outer pipe portion 8 is pushed down from the convex portion 9b of the inner column portion 9, and the return spring 10 of the upper space 16 is shortened. As a result, the upper end of the outer pipe portion 8 becomes substantially flush with the upper end of the inner column portion 9 (hereinafter, referred to as “the flush state”).

  In this flush state, the outer pipe portion 8 is pushed down, the lower end of the lower sliding frame 8b of the outer pipe portion 8 abuts on the seal member 14 and the inner column portion 9, and the inner cylindrical flow path 9c of the inner column portion 9 Will be closed. Further, the inner hole 8 g of the outer pipe portion 8 is also closed by the inner column portion 9.

  In this manner, when the hot water injected into the dripper main body 4 is in a high temperature state, the flow path 6 is closed, and the hot water is not supplied from the dripper main body 4 downward.

  After that, when the hot water is cooled to the outside air temperature with the standing time and the water temperature falls to the operating temperature range (47 ° C. or more and 63 ° C. or less), the protruding state as shown in FIG. It becomes.

Then, in the projecting state, the inner cylinder flow passage 9c of the inner column portion 9 is opened, and the inner cylinder flow passage 9c communicates with the lower space 17 through the inner hole 8g. In this way, the flow path 6 is opened, and a flow-down path from the outside of the valve mechanism 5 through the flow path 6 to the outlet 4 d is formed.
That is, when the temperature of the hot water drops to the operating temperature, a flow-down path is naturally formed, and the hot water is supplied downward from the dripper main body 4.

[effect]
In the dripper 1 to which the present invention described above is applied, the flow path 6 is opened and closed with high temperature responsiveness by utilizing the shape memory effect of the shape memory spring 11, and the temperature of the hot water in contact with the sensing portion of the shape memory spring 11 Immediately after the temperature reaches 63 ° C., the flow path 6 can be opened, and high-precision temperature control can be realized. Moreover, it is not necessary to transfer to a cup many times like a hot-water cooling method, and to continuously monitor a temperature display continuously visually like a temperature measurement method.

  Furthermore, since it is possible to control to the proper hot water temperature range of Gyokuro with high accuracy, it is possible to fully feel the natural "umami" of Gyokuro.

  Further, since the waiting time until the hot water starts to flow down from the outlet 4d can be secured, this waiting time can be functioned as an expectation effect given to the user. That is, when the dripper 1 is used, the user can feel the expectation that the hot water in the dripper main body 4 is supplied downward and poured into the tea leaf 15 so that a delicious tea can be tasted soon.

  Further, the valve mechanism 5 is configured as a double pipe structure of the inner column portion 9 and the outer pipe portion 8, and the simplification and downsizing of the dripper 1 can be achieved through the simplification and simplification of the valve mechanism 5. Cost can be expected.

[Modification]
In the present embodiment, the return spring 10 is wound in the upper space 16 and the shape memory spring 11 is wound in the lower space 17 as an example, but as shown in FIG. Alternatively, the shape memory spring 11 may be wound in the upper space 16 and the return spring 10 may be wound in the lower space 17 in accordance with the depth of the protrusion 4 b of the dripper 1.

That is, when the depth of the protruding portion 4b of the dripper 1 is shallow (see FIG. 3A), the low laminar flow 18 easily flows into the lower space 17, whereas the depth of the protruding portion 4b of the dripper 1 is When deep (see FIG. 3 (b)), the low laminar flow 18 tends to flow into the upper space 16.
Therefore, when the depth of the protrusion 4b of the dripper 1 is deep (see FIG. 3B), the shape memory spring 11 is wound in the upper space 16 where the low laminar flow 18 easily flows, so that the temperature is highly accurate. Control can be expected.

  Here, when the shape memory spring 11 is wound in the upper space 16, as shown in the right figure of FIG. 3 (b), the shape memory spring of the upper space 16 at a normal temperature of about 15 to 25.degree. 11 becomes a shortening state. Therefore, the elastic force of the return spring 10 in the lower space 17 causes the lower inner end 8e of the outer pipe portion 8 to be pushed down from the convex portion 9b of the inner column 9 and the return spring 10 is in an extended state. As a result, the upper end of the outer tube portion 8 is in a state (the flush state) substantially flush with the upper end of the inner column portion 9.

  In the modification, the lower sliding frame 8b is configured such that the inner space 8g is not provided, and the lower space 17 and the inner cylindrical flow passage 9c communicate with each other in a flush state.

  In this flush state, when hot water immediately after boiling is poured into the dripper main body 4 from the upper opening 4a, a low laminar flow 18 in which high temperature hot water (hot water exceeding 63 ° C.) flows along the inner bottom surface 4c of the dripper main body 4 As a result, the air flows into the upper space 16 through the outer hole 8 f and comes in contact with the sensing portion of the shape memory spring 11.

  When the low laminar flow 18 contacts the shape memory spring 11, as shown in the left view of FIG. 3B, the shape memory spring 11 in the upper space 16 resists the elastic force of the return spring 10 by its restoring force. Stretch and become stretched. Therefore, the upper inner end 8d of the outer tube portion 8 is pushed up starting from the convex portion 9b of the inner column portion 9, and the return spring 10 of the lower space 17 is shortened. As a result, the upper end of the outer tube portion 8 is in a state (protruding state) in which the upper end protrudes above the upper end of the inner column portion 9.

  And in a modification, inner cylinder channel 9c will be closed by lower slide frame 8b in a projection state.

<2. Second embodiment>
The dripper 1 of the second embodiment differs from that of the first embodiment only in the configuration of the valve mechanism 5, and hence the description of the entire configuration is omitted.

[Description of valve mechanism]
FIG. 4 (a) is a schematic view for explaining another example of the valve mechanism of the hot water feeder to which the present invention is applied, and the valve mechanism 5 shown here is a cylindrical outer pipe portion disposed outside. 8 and a columnar inner column 9 disposed inside the outer tube 8 as a valve body.

  4 (a) and 4 (b), the front right view shows a side cross sectional view in the valve open state, and the front view left view shows a side cross sectional view in the valve closed state.

Here, the outer tube portion 8 is fixed to the dripper main body 4 as a partition member.
Specifically, the O-ring 21 (annular packing) is fitted in a recess provided in the outer pipe portion 8 and is inserted into and fixed to the projecting portion 4 b of the dripper main body 4 from above.

  Further, the outer tube portion 8 has an upper frame 8h in which the upper portion of the cylindrical body is folded inward and downward, and a lower frame 8i in which the lower portion of the cylindrical body is folded inward and upward.

  Furthermore, the inner column portion 9 is on the common axial center 13 with the outer pipe portion 8, and a ridge-like convex portion 9 b is formed on the outer periphery in the vertical direction of the inner column portion 9. Further, the inner column portion 9 is slidably fitted in the outer pipe portion 8 in a state where the outer peripheral surface above the convex portion 9b is in contact with the upper frame 8h.

Further, a space surrounded by the peripheral wall 8c, the upper frame 8h, the lower frame 8i, and the outer peripheral surface of the inner column portion 9 constituting the outer periphery of the outer pipe portion 8 is higher than the convex portion 9b of the inner column portion 9. (In other words, between the upper space 16 formed between the projection 9 b and the upper inner end 8 d) and below the projection 9 b of the inner column 9 (in other words, between the projection 9 b and the lower inner end 8 And the lower space 17 formed in between).
Then, in the upper space 16, the return spring 10 is wound around the inner pillar portion 9 in a compressed state. In the lower space 17, a shape memory spring 11 (an example of a shape memory material) is wound around the inner column portion 9.

  Furthermore, a plurality of outer holes 8 f penetrating in the radial direction are provided in parallel in the vertical direction in the peripheral wall 8 c.

Here, by utilizing the shape memory effect according to the temperature of the hot water in contact with the shape memory spring 11, the inner column portion 9 which is a valve body is moved, and the flow path can be closed.
That is, when the hot water injected into the dripper body 4 comes in contact with the shape memory spring 11, the shape memory spring 11 is restored to a predetermined shape (shortened shape or extended shape in this embodiment) with high temperature response. The force moves the inner column 9 to open and close the flow passage to the outlet 4 d. Therefore, when the contacting hot water reaches a desired temperature, the flow path 6 opens rapidly, and the hot water can flow down from inside the dripper body 4 through the outlet 4 d.

  Then, in the present embodiment, the operating temperature range of the shape memory spring 11 is made to coincide with 47 ° C. or more and 63 ° C. or less, which is the proper hot water range of Gyokuro. That is, at a high temperature where the temperature of the hot water in contact with the shape memory spring 11 exceeds the operation range temperature (high temperature exceeding 63 ° C.), the valve mechanism 5 closes to close the flow path and contact the shape memory spring 11 When the temperature is within the operating temperature range (temperature of 47 ° C. or more and 63 ° C. or less), the valve mechanism 5 is opened to open the flow path. Note that, in the valve mechanism 5 of the present embodiment, the valve opening state is maintained even at a low temperature below the operating temperature range (a low temperature below 47 ° C.).

  The shape memory spring 11 may be configured so as to be able to sense the temperature of the hot water as a whole, or may be configured to sense the temperature of the hot water only at portions contacting the low laminar flow 18 flowing along the inner bottom surface of the dripper main body 4 It may be done. Further, the form of the sensing unit is not particularly limited as long as the temperature of the low laminar flow 18 can be reliably detected.

[Operation explanation]
In the dripper 1 of the present embodiment, the shape memory spring 11 of the lower space 17 is shortened as shown in the right drawing of FIG. Therefore, the elastic force of the return spring 10 in the upper space 16 causes the convex portion 9b of the inner column 9 to be depressed starting from the upper inner end 8d of the outer tube portion 8, and the return spring 10 is in an extended state. As a result, the upper end of the inner column portion 9 becomes substantially flush with the upper end of the outer pipe portion 8 (the flush state).

  In this flush state, the inner column portion 9 is pushed down, the contact between the inner column portion 9 and the lower frame 8i of the outer tube portion 8 is released, and the flow path 6 is opened.

  In this flush state, when hot water immediately after boiling is poured into the dripper main body 4 from the upper opening 4a, low temperature laminar flow in which high temperature hot water (hot water exceeding 63 ° C.) flows along the inner bottom surface 4c of the dripper main body 4 18 and flows into the lower space 17 through the outer hole 8 f to contact the sensing portion of the shape memory spring 11.

  When the low laminar flow 18 contacts the shape memory spring 11, as shown in the left view of FIG. 4A, the shape memory spring 11 in the lower space 17 resists the elastic force of the return spring 10 by its restoring force. Stretch and become stretched. Therefore, the convex part 9b of the inner column part 9 is pushed up starting from the lower inner end 8e of the outer tube part 8, and the return spring 10 of the upper space 16 is shortened. As a result, the upper end of the inner column portion 9 is in a state (protruding state) in which the upper end of the inner pipe portion 9 protrudes above the upper end of the outer pipe portion 8.

  In this projecting state, the inner column portion 9 is pushed up, the inner column portion 9 and the lower frame 8i of the outer pipe portion 8 abut, and the flow path 6 is closed.

  In this manner, when the hot water injected into the dripper main body 4 is in a high temperature state, the flow path 6 is closed, and the hot water is not supplied from the dripper main body 4 downward.

  After that, when the hot water is cooled to the outside air temperature with the standing time and the water temperature falls to the operating temperature range (47 ° C. or more and 63 ° C. or less), the surface as shown in the right figure of FIG. It becomes one state.

Then, in the flush state, the flow path 6 is opened, and a flow-down path from the outside of the valve mechanism 5 through the flow path 6 to the outlet 4 d is formed.
That is, when the temperature of the hot water drops to the operating temperature, a flow-down path is naturally formed, and the hot water is supplied downward from the dripper main body 4.

[effect]
In the dripper 1 to which the present invention described above is applied, the flow path 6 is opened and closed with high temperature response using the shape memory effect of the shape memory spring 11, and as in the first embodiment, Highly accurate temperature control can be realized. Moreover, it is not necessary to transfer to a cup many times like a hot-water cooling method, and to continuously monitor a temperature display continuously visually like a temperature measurement method.

  Furthermore, the first point mentioned above is that the point that the user can fully feel "Umami", which is the natural taste of Gyokuro, that the user can feel a sense of expectation, and that the dripper 1 can be made more compact and less expensive. Is the same as the embodiment of FIG.

[Modification]
In the present embodiment, the return spring 10 is wound in the upper space 16 and the shape memory spring 11 is wound in the lower space 17 as an example, but as shown in FIG. Alternatively, the shape memory spring 11 may be wound in the upper space 16 and the return spring 10 may be wound in the lower space 17 in accordance with the depth of the protrusion 4 b of the dripper 1.

That is, when the depth of the protruding portion 4b of the dripper 1 is shallow (see FIG. 4A), the low laminar flow 18 easily flows into the lower space 17, whereas the depth of the protruding portion 4b of the dripper 1 is When deep (see FIG. 4 (b)), the low laminar flow 18 tends to flow into the upper space.
Therefore, when the depth of the projecting portion 4b of the dripper 1 is deep (see FIG. 4B), the shape memory spring 11 is wound around the upper space 16 where the low laminar flow 18 easily flows, so that the temperature is highly accurate. Control can be expected.

  Here, when the shape memory spring 11 is wound in the upper space 16, as shown in the right figure of FIG. 4 (b), the shape memory spring of the upper space 16 at a normal temperature of about 15 to 25.degree. 11 becomes a shortening state. Therefore, the elastic force of the return spring 10 in the lower space 17 pushes up the convex portion 9b of the inner column 9 starting from the lower inner end 8e of the outer tube portion 8, and the return spring 10 is in an extended state. As a result, the upper end of the inner column portion 9 is in a state (protruding state) in which the upper end of the inner pipe portion 9 protrudes above the upper end of the outer pipe portion 8.

  And in a modification, contact with inner pillar part 9 and lower frame 8i of outer tube part 8 is canceled in a projection state, and it is constituted so that channel 6 may open.

  In this projecting state, when hot water immediately after boiling is poured into the dripper main body 4 from the upper opening 4a, high temperature hot water (hot water exceeding 63 ° C.) becomes a low laminar flow 18 flowing along the inner bottom surface 4c of the dripper main body 4 The air flows into the upper space 16 through the outer hole 8 f and comes into contact with the sensing portion of the shape memory spring 11.

  When the low laminar flow 18 contacts the shape memory spring 11, as shown in the left view of FIG. 4B, the shape memory spring 11 in the upper space 16 resists the elastic force of the return spring 10 by its restoring force. Stretch and become stretched. Therefore, the convex part 9b of the inner column part 9 is pushed down from the upper inner end 8d of the outer tube part 8 as a starting point, and the return spring 10 of the lower space 17 is shortened. As a result, the upper end of the inner column portion 9 becomes substantially flush with the upper end of the outer pipe portion 8 (the flush state).

  And in a modification, it is constituted so that inner pillar part 9 and lower frame 8i of outer tube part 8 contact in a flush state, and channel 6 is closed.

<3. Third embodiment>
The dripper 1 of the third embodiment differs from the first embodiment and the second embodiment only in the configuration of the valve mechanism 5, and therefore the description of the entire configuration is omitted.

[Description of valve mechanism]
FIG. 5 (FIG. 5 (a) is a plan view, FIG. 5 (b) is a side sectional view in the valve closed state, and FIG. 5 (c) is a side sectional view in the valve open state) of the hot water feeder to which the present invention is applied. It is a schematic diagram for demonstrating the further another example of a valve mechanism, and the valve mechanism 5 shown here is the slide piece arrange | positioned inside the case body 22 arrange | positioned as a valve body as case body 22 arrange | positioned as a partition member. And 23.

Here, the case body 22 is fixed to the dripper body 4.
Specifically, a disk-like seal member 14 such as a packing is inserted into and fixed to the protrusion 4b of the dripper body 4 from above, and a groove is provided on the side surface of the vertical through hole 14a of the seal member 14 ing. The case body 22 is fixed to the dripper main body 4 by engagement of the groove portion and the concavo-convex portion 22 b provided in the lower portion of the case body 22.

  Further, the case body 22 is provided with a vertical through hole 22a, and a housing space for housing the slide piece 23 is formed therein.

  The slide piece 23 is provided with the vertical through holes 23 a and is slidably accommodated in the accommodation space of the case body 22. Then, when the slide piece 23 slides and the vertical through hole 23a is positioned approximately at the center of the dripper main body 4 in plan view, the vertical through hole 22a of the case body 22 and the vertical through hole 23a of the slide piece 23 communicate with each other. It becomes.

  Further, the return spring 10 is disposed in a compressed state on one side between the slide piece 23 and the inner surface of the housing space of the case body 22. Furthermore, a shape memory spring 11 (an example of a shape memory material) is disposed on the other side between the slide piece 23 and the inner surface of the housing space of the case body 22. The region 22c) is open.

Here, the slide piece 23 which is a valve body is moved using the shape memory effect according to the temperature of the hot water in contact with the shape memory spring 11, and the flow path 6 can be opened and closed.
That is, when the hot water injected into the dripper body 4 comes in contact with the shape memory spring 11, the shape memory spring 11 is restored to a predetermined shape (shortened shape or extended shape in this embodiment) with high temperature response. The slide piece 23 is moved by the force to open and close the flow path to the outlet 4 d. Therefore, when the contacting hot water reaches a desired temperature, the flow path 6 opens rapidly, and the hot water can flow down from inside the dripper body 4 through the outlet 4 d.

  Then, in the present embodiment, the operating temperature range of the shape memory spring 11 is made to coincide with 47 ° C. or more and 63 ° C. or less, which is the proper hot water range of Gyokuro. That is, when the temperature of the hot water in contact with the shape memory spring 11 exceeds the operating temperature range (high temperature exceeding 63 ° C.), the valve mechanism 5 closes to close the flow path and contact the shape memory spring 11 When the temperature is within the operating temperature range (temperature of 47 ° C. or more and 63 ° C. or less), the valve mechanism 5 is opened to open the flow path. Note that, in the valve mechanism 5 of the present embodiment, the valve opening state is maintained even at a low temperature below the operating temperature range (a low temperature below 47 ° C.).

[Operation explanation]
In the dripper 1 of the present embodiment, as shown in FIG. 5C, the shape memory spring 11 is in a shortened state at a normal temperature of about 15 to 25 ° C. as the outside air. Therefore, the slide piece 23 is pushed (pressed in the left direction in FIG. 5) from the inner surface of the accommodation space of the case body 22 by the elastic force of the return spring 10, and the return spring 10 is in an extended state.

  In such a state, the vertical through hole 23 a provided in the slide piece 23 is positioned approximately at the center in plan view of the dripper body 4, and the flow path 6 is opened.

  In this state, when hot water immediately after boiling is poured into the dripper main body 4 from the upper opening 4a, high temperature hot water (hot water exceeding 63 ° C.) flows from the opening area indicated by reference numeral 22 to the housing space of the case body 22. It flows in and contacts the sensing part of the shape memory spring 11.

  Then, when hot water comes in contact with the shape memory spring 11, as shown in FIG. 5B, the shape memory spring 11 is stretched against the elastic force of the return spring 10 by its restoring force and becomes an extended state . As a result, the slide piece 23 is pushed in the right direction in FIG. 5, and the return spring 10 is shortened.

  In such a state, the vertical through holes 22 a provided in the case body 22 and the vertical through holes 23 a provided in the slide piece 23 do not communicate with each other, and the flow path 6 is closed.

  In this manner, when the hot water injected into the dripper main body 4 is in a high temperature state, the flow path 6 is closed, and the hot water is not supplied from the dripper main body 4 downward.

  After that, when the hot water is cooled to the outside air temperature with the standing time and the water temperature drops to the operating temperature range (47 ° C. or more and 63 ° C. or less), the state shown in FIG.

Then, in such a state, the flow path 6 is opened, and a flow-down path from the upper side of the valve mechanism 5 through the flow path 6 to the outlet 4 d is formed.
That is, when the temperature of the hot water drops to the operating temperature, a flow-down path is naturally formed, and the hot water is supplied downward from the dripper main body 4.

[effect]
In the dripper 1 to which the present invention described above is applied, the flow path 6 is opened and closed with high temperature responsiveness by utilizing the shape memory effect of the shape memory spring 11, and the above-described first embodiment, second embodiment As in the embodiment, highly accurate temperature control can be realized. Moreover, it is not necessary to transfer to a cup many times like a hot-water cooling method, and to continuously monitor a temperature display continuously visually like a temperature measurement method.

  Furthermore, the point that the user can fully feel the "umami" inherent to Gyokuro and the point that the user can have a sense of expectation are also the same as in the first and second embodiments described above. .

  Further, the valve mechanism 5 is configured as an integrated structure in which the slide piece 23 is accommodated in the case body 22. The simplification and the cost reduction of the valve mechanism 5 are facilitated, so that the dripper 1 can be made compact and cost-reduced. Can be expected.

<4. Fourth embodiment>
The dripper 1 of the fourth embodiment differs from the first to third embodiments only in the configuration of the valve mechanism 5, and therefore the description of the overall configuration is omitted.

[Description of valve mechanism]
6 (FIG. 6 (a) is a plan view, and FIG. 6 (b) is a side sectional view) is a schematic view for explaining yet another example of the valve mechanism of the hot water feeder to which the present invention is applied, The valve mechanism 5 shown here has a plate body 24 disposed as a partition member, and a bending piece 25 disposed on the side of the outlet 4 d of the plate body 24 as a valve body.

Here, the plate body 24 is fixed to the dripper body 4.
Specifically, the O-ring 21 (annular packing) is fitted in a recess provided in the plate body 24, and is inserted into and fixed to the protrusion 4 b of the dripper main body 4 from above.

  Further, the plate body 24 is provided with a through hole 24 a in the vertical direction.

  Further, the bending piece 25 is configured to have a shape memory spring (not shown), and is fixed to the plate body 24 only at one end side and is a flat state (non It is configured to be able to be in a bending state with the bending state).

Here, by utilizing the shape memory effect according to the temperature of the hot water in contact with the shape memory spring, the bending piece 25 which is a valve body is bent so that the flow path 6 can be opened and closed.
That is, when the hot water injected into the dripper body 4 comes in contact with the shape memory spring, the shape memory spring is restored to a predetermined shape (a flat plate shape or a bent shape in this embodiment) with high temperature response. The bending piece 25 bends to open and close the flow path to the outlet 4 d. Therefore, when the contacting hot water reaches a desired temperature, the flow path 6 opens rapidly, and the hot water can flow down from inside the dripper body 4 through the outlet 4 d.

  Then, in the present embodiment, the operating temperature range of the shape memory spring is made to coincide with 47 ° C. or more and 63 ° C. or less, which is the proper hot water range of Gyokuro. That is, when the temperature of the hot water in contact with the shape memory spring exceeds the operating temperature range (high temperature exceeding 63 ° C.), the valve mechanism 5 closes to close the flow path and the temperature of the hot water in contact with the shape memory spring operates. At an operating temperature (temperature of 47 ° C. or more and 63 ° C. or less) within the temperature range, the valve mechanism 5 is opened to open the flow path. Note that, in the valve mechanism 5 of the present embodiment, the valve opening state is maintained even at a low temperature below the operating temperature range (a low temperature below 47 ° C.).

[Operation explanation]
In the dripper 1 of the present embodiment, when the outside air is at a normal temperature of about 15 to 25 ° C., as shown by the solid line in FIG.

  In this state, when hot water immediately after boiling is poured into the dripper main body 4 from the upper opening 4a, high temperature hot water (hot water exceeding 63 ° C.) comes in contact with the sensing portion of the shape memory spring.

  When the hot water comes in contact with the shape memory spring, as shown by the dotted line in FIG. 6 (b), the bending piece 25 becomes flat and the flow path 6 is closed.

  In this manner, when the hot water injected into the dripper main body 4 is in a high temperature state, the flow path is closed, and the hot water is not supplied downward from the dripper main body 4.

  After that, when the hot water is cooled to the outside air temperature with the standing time and the water temperature falls to the operating temperature range (47 ° C. or more and 63 ° C. or less), the state shown by the solid line in FIG. Become.

  Then, in such a state, the flow path 6 is opened, and a flow-down path from the upper side of the valve mechanism 5 through the flow path 6 to the outlet 4 d is formed.

[effect]
In the dripper 1 to which the present invention described above is applied, the flow path 6 is opened and closed with high temperature responsiveness by utilizing the shape memory effect of the shape memory spring, and the above-described first embodiment, second embodiment As in the embodiment and the third embodiment, highly accurate temperature control can be realized. Moreover, it is not necessary to transfer to a cup many times like a hot-water cooling method, and to continuously monitor a temperature display continuously visually like a temperature measurement method.

  Furthermore, the point that the user can fully feel the "umami" inherent to Gyokuro, and the point that the user can feel a sense of expectation are also described in the first embodiment, the second embodiment, and the third embodiment described above. It is the same as that of the embodiment.

  Moreover, since the valve mechanism 5 is configured without using the return spring 10, the simplification and the cost reduction of the dripper 1 can be expected through the simplification and the downsizing of the valve mechanism 5 being easy.

<5. Modified example>
[Modification 1]
In the first to fourth embodiments described above, the case of using Gyokuro as the tea leaf 15 is described as an example, but the tea leaf 15 does not have to be Gyokuro, and it is a sencha. Also good. In addition, when using an Sencha as the tea leaf 15, the operating temperature range of the shape memory spring 11 will be made to correspond with 67 degreeC or more which is the appropriate hot water range of Sencha, and 83 degrees C or less.

[Modification 2]
Further, in the first to fourth embodiments described above, the case where tea leaves are accommodated in the cup 2 (see FIG. 1) and the tea pot 3 (see FIG. 2) will be described as an example. However, as shown in FIG. 7, even if the tea strainer plug 26 is screwed (attached) to the dripper main body 4 and the tea strainer mesh 27 is laid in the tea strainer plug 26, the tea leaf 15 is accommodated in the tea strainer plug 26. good.
7 (a) is a cross-sectional view of a state in which the protrusion 4b of the dripper main body 4 is cut substantially horizontally and the tea plug 26 is mounted, and FIG. 7 (b) is an outer periphery of the protrusion 4b of the dripper main body 4. It is sectional drawing of the state equipped with the tea strainer plug 26. As shown in FIG.

DESCRIPTION OF SYMBOLS 1 dripper 2 cup 3 teapot 4 dripper main body 4a upper opening 4b protrusion part 4c inner bottom face 4d outlet 5 valve mechanism 6 flow path 8 outer tube 8a upper slide frame 8b lower slide frame 8c peripheral wall 8d upper inner end 8e lower inner End 8f Outer hole 8g Inner hole 8h Upper frame 8i Lower frame 9 Inner column 9a Irregular portion 9b Convex part 9c Inner cylinder flow path 10 Return spring 11 Shape memory spring 13 Axis 14 Seal member 14a Vertical through hole 15 Tea leaf 16 Upper Space 17 lower space 18 low laminar flow 21 O ring 22 case body 22a vertical through hole 23 slide piece 23a vertical through hole 24 plate body 24a vertical through hole 25 bending piece 26 tea strainer plug 27 tea strainer mesh

Claims (10)

A hot water supply body for injecting and storing hot water and having an outlet through which the hot water flows down;
A valve body capable of opening and closing a flow passage communicating with the outlet, and a shape memory material for moving the valve body by using a shape memory effect according to the temperature of the hot water in contact with the shape memory material One of 47 ° C. and 63 ° C. or less, or 67 ° C. and 83 ° C. or less is taken as an operating temperature range, and closed at high temperatures where the temperature of the hot water coming in contact exceeds the operating temperature range, the flow path is closed And a valve mechanism configured to open at an operating temperature within the operating temperature range and open the flow path. The operating temperature range is
The hot water feeder according to claim 1, wherein the temperature is 50 ° C to 60 ° C, or 70 ° C to 80 ° C. The shape memory material is
It has a sensing part which senses the temperature of the hot water in contact with the hot water,
The hot water feeder according to claim 1 or 2, wherein the sensing unit is provided near a position where the low laminar flow flowing along the inner bottom surface of the hot water feeder body flows into the outlet. The valve mechanism
The outlet can be occluded, and
The partition member having the flow channel formed therein is configured to open and close the flow channel by moving the valve body with respect to the partition member. Hot water supply device as described. The valve mechanism
It has a pillar-shaped inner pillar portion arranged inside as the partition member, and a cylindrical outer pipe portion arranged outside as the valve body,
In one of the spaces formed between the convex portion provided on the outer periphery of the inner pillar portion and the sliding direction front and rear end of the outer pipe portion, a shape memory spring, which is the shape memory material, is used in the inner pillar portion. By being wound and disposed, in the other of the space, a return spring is wound and disposed on the inner column portion,
The hot water feeder according to claim 4, wherein the outer pipe portion is configured to be slidable with respect to the inner pillar portion by a restoring force by the shape memory effect of the shape memory spring and an elastic force of the return spring. . The valve mechanism
It has a cylindrical outer pipe portion disposed outside as the partition member, and a columnar inner column portion disposed inside as the valve body,
In one of the spaces formed between the convex portion provided on the outer periphery of the inner pillar portion and the sliding direction front and rear end of the outer pipe portion, a shape memory spring, which is the shape memory material, is used in the inner pillar portion. By being wound and disposed, in the other of the space, a return spring is wound and disposed on the inner column portion,
The hot water feeder according to claim 4, wherein the inner column portion is configured to be slidable with respect to the outer pipe portion by a restoring force by a shape memory effect of the shape memory spring and an elastic force of the return spring. . The valve mechanism
A case body disposed as the partition member, and a slide piece disposed inside the case body as the valve body,
A shape memory spring, which is the shape memory material, is disposed in one of the spaces formed between the sliding direction end face of the slide piece and the sliding direction front and back surface inside the case body, and the other in the space , By the return spring being placed,
The hot water feeder according to claim 4, wherein the slide piece is configured to be slidable with respect to the case body by a restoring force by a shape memory effect of the shape memory spring and an elastic force of the return spring. The valve mechanism
It has a plate body disposed as the partition member, and a bending piece disposed on the outlet side of the plate body as the valve body,
By having a shape memory spring in which the bending piece is the shape memory material,
At least a part of the bending piece is configured to be bendable with respect to the plate body by the restoring force by the shape memory effect of the shape memory spring and the water pressure by which the bending piece is pushed toward the outlet by the hot water. The hot water feeder according to claim 4. A hot water supply body for injecting and storing hot water and having an outlet through which the hot water flows down;
A valve body capable of opening and closing a flow passage communicating with the outlet, and a shape memory member for moving the valve body by utilizing a shape memory effect according to the temperature of the hot water in contact When the temperature exceeds a predetermined operating temperature range of the shape memory material, the valve is closed to close the flow path, and the temperature of the hot water in contact is opened at an operating temperature within the operating temperature range to open the flow path And a valve mechanism configured to open. A hot water supply body for injecting and storing hot water and having an outlet through which the hot water flows down;
A valve body capable of opening and closing a flow passage communicating with the outlet, and a shape memory material for moving the valve body by using a shape memory effect according to the temperature of the hot water in contact with the shape memory material One of 47 ° C. and 63 ° C. or less, or 67 ° C. and 83 ° C. or less is taken as an operating temperature range, and closed at high temperatures where the temperature of the hot water coming in contact exceeds the operating temperature range, the flow path is closed A valve mechanism configured to open at an operating temperature within the operating temperature range and open the flow path when the temperature of the hot water in contact is within the operating temperature range;
It is configured to be able to accommodate an object to be treated that is exposed to hot water flowing down from the outlet and to be treated, and to be attachable to the hot water feeder body, and the hot water after treating the object is filtered And a processing plug to be discharged.

Images