JP6989922B2 - Hot water supply device - Google Patents

Description

The present invention relates to a hot water supply device . More specifically, the present invention relates to a hot water supply device that can easily supply hot water at a desired temperature.

Conventionally, the factors that determine the taste of Japanese tea include "hot water temperature", "extraction time", "brewing method", etc., but of these, "hot water temperature" is the most important, and it is different 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 "appropriate 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. Astringency) Ingredients ooze out a lot. On the other hand, at a hot water temperature within the proper hot water temperature range (hereinafter referred to as “suitable temperature”), “umami components” such as theanine, which is a kind of amino acid, are exuded, and the above-mentioned bitter component is difficult to exude.

Therefore, in order to brew tea with hot water at an appropriate temperature, the hot water is transferred to a cup or teapot at room temperature a predetermined number of times to lower the temperature to the appropriate temperature (hereinafter referred to as the "hot water cooling method"), or the hot water becomes the appropriate temperature. The temperature of the hot water is visually checked using a hot water temperature gauge until it drops (hereinafter referred to as the "temperature measurement method").

Furthermore, like an electric kettle or an automatic tea dispenser, the water in the water storage tank is heated using a heater, temperature sensor, hot water temperature control device, etc., and this heated hot water is taken out from the water storage tank to make it hot water at an appropriate temperature. Techniques relating to a hot water supply device for sending to the outside are known (see, for example, Patent Documents 1 and 2).

In addition, a technique relating to a coffee extractor including a cartridge formed by covering the upper surface of a dish-shaped filter containing coffee powder with a special film that melts at a predetermined temperature is also known (for example, a patent). See Document 3).

According to this technology, by mounting the cartridge on the bottom of the dripper, injecting water, and then heating it in a microwave oven, the special film that is in contact with the water is melted at a predetermined temperature by the heated water, and the top surface of the cartridge is melted. Opens, and this hot water invades the cartridge through the opening and is poured into coffee powder to extract coffee. By storing tea leaves in a cartridge instead of this coffee powder, it can be applied to tea brewing.

Japanese Unexamined Patent Publication No. 7-303565 Japanese Unexamined Patent Publication No. 2013-236691 Jikkai Sho 63-153927

However, in the hot water cooling method, the temperature drop range differs depending on the capacity, material, wall thickness, etc. of the cup, teapot, etc., and it is difficult to accurately lower the hot water to an appropriate temperature. Further, it may be necessary to transfer the cup many times in order to lower the temperature of the hot water to an appropriate temperature, in which case the burden on the user is large.

Further, in the temperature measurement method, it is necessary to continuously visually monitor the temperature display of the hot water temperature gauge until the hot water drops to an appropriate temperature. For this reason, the temperature of the hot water may deviate significantly from the optimum temperature by mistake, and it is difficult to accurately lower the temperature to the optimum temperature. Furthermore, since it is constantly monitored visually, the burden on the user is heavy.

Further, in the above-mentioned hot water supply device, for example, in the case of an electric kettle, a temperature sensor is provided near the heater provided at the bottom of the inner container which is a water storage tank, and in the case of an automatic tea dispenser, a heater is provided at the bottom of the water storage tank. On the other hand, the temperature sensor is provided on the outer peripheral surface of the water storage tank away from the heater, and none of the hot water supply devices controls the hot water temperature based on the temperature of the hot water at the actual spout. Therefore, the temperature of the hot water to be supplied varies widely, and it is difficult to supply hot water accurately set to a predetermined temperature. Furthermore, if hot water that has been boiled once is kept warm for a long time like a water storage tank, it will deteriorate, so if tea is brewed with this hot water, the taste of tea will be significantly deteriorated.

Further, in the above-mentioned coffee extractor, the special film is melted in hot water at a predetermined temperature, and the hot water temperature that can be set is one point. Therefore, before the entire hot water temperature in the dripper drops to the predetermined temperature, local hot water is used. Since the special film may melt due to the temperature drop, it is difficult to accurately reduce the temperature of the hot water to an appropriate temperature.

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

In order to achieve the above object, the hot water supply device of the present invention injects and stores hot water, and at the same time, the hot water supply device main body in which the outlet through which the hot water flows down is formed, and the flow communicating with the outlet. It has a valve body that can open and close the path, and a shape memory material that moves the valve body by utilizing the shape memory effect according to the temperature of the hot water that comes into contact with the valve body, and the shape memory material is 47 ° C. or higher and 63 ° C. or lower. Alternatively, one of 67 ° C. or higher and 83 ° C. or lower is set as the operating temperature range, and when the temperature of the hot water in contact exceeds the operating temperature range, the valve is closed to close the flow path and the temperature of the hot water in contact is set. It is provided with a valve mechanism configured to open the valve at an operating temperature within the operating temperature range to open the flow path.

Further, in order to achieve the above object, the hot water supply device of the present invention injects and stores hot water, and communicates with the hot water supply device main body in which the outlet through which the hot water flows down is formed and the outlet. It has a valve body that can open and close the flow path to be opened and closed, and a shape storage material that moves the valve body by utilizing the shape memory effect according to the temperature of the hot water in contact, and the temperature of the hot water in contact is the shape memory. It is configured to close the valve at a high temperature exceeding a predetermined operating temperature range of the material to close the flow path, and open the valve at an operating temperature within the operating temperature range of the contacting hot water to open the flow path. It is equipped with a valve mechanism.

Further, in order to achieve the above object, the hot water supply processing tool of the present invention injects and stores hot water, and at the same time, the hot water supply device main body in which the outlet through which the hot water flows down is formed, and the outlet. It has a valve body that can open and close the flow path that communicates with it, and a shape memory material that moves the valve body by utilizing the shape memory effect according to the temperature of the hot water that comes into contact with it, and the shape memory material is 47 ° C. or higher 63 ° C. or higher. The operating temperature range is either 1 ° C. or lower or 67 ° C. or higher and 83 ° C. or lower, and when the temperature of the hot water in contact exceeds the operating temperature range, the valve is closed to close the flow path and the hot water in contact. A valve mechanism configured to open the valve to open the flow path at an operating temperature within the operating temperature range, and an object to be treated exposed to hot water flowing down from the outlet can be accommodated. Moreover, it is configured to be attachable to the hot water supply main body, and is provided with a treatment plug in which hot water after processing the object to be treated is filtered out and discharged.

Here, depending on the temperature of the hot water supply device body in which the hot water is injected and stored, the hot water outlet is formed, the valve body that can open and close the flow path communicating with the hot water outlet, and the hot water in contact with the hot water. By providing a valve mechanism having a shape memory material that moves the valve body by utilizing the shape memory effect, it is possible to supply hot water accurately set to a desired temperature downward. That is, when the hot water injected into the main body of the hot water supply device comes into contact with the shape storage material, the shape storage material is restored to a predetermined shape with high temperature response, and this restoring force causes the valve body to move and the flow path to the outlet. When the hot water in contact reaches a desired temperature, the flow path is quickly opened, and the hot water can flow down from the inside of the hot water supply device body through the flow path and the outflow port.

Further, by setting either 47 ° C. or higher and 63 ° C. or lower or 67 ° C. or higher and 83 ° C. or lower as the operating temperature range for the shape storage material, it is possible to supply hot water suitable for gyokuro or sencha.
That is, the operating temperature range of the shape memory material should be the same as either 47 ° C or higher and 63 ° C or lower, which is the appropriate hot water temperature range for gyokuro, or 67 ° C or higher and 83 ° C or lower, which is the proper hot water temperature range for sencha. When the temperature of the hot water reaches the appropriate temperature within the appropriate temperature range of gyokuro or sencha, the shape memory material operates with the contacting hot water, the valve body moves, the flow path opens, and the hot water can flow down from the outlet. be.

The proper hot water temperature range for gyokuro is set to 47 ° C or higher and 63 ° C or lower. If it exceeds the limit, a lot of "bitter (astringent) components" such as tannin and caffeine will seep out, and the original "umami" of gyokuro will not be obtained. This is because it may be thermally deformed. On the other hand, if the temperature of the water is less than 47 ° C, tannins and caffeine are difficult to exude, but the amount of theanine exuded is also small, the original "umami" of gyokuro is weakened, and sterilization into cups and teapots with hot water. This is because the action is also reduced.

In addition, setting the appropriate hot water temperature range of sencha to 67 ° C or higher and 83 ° C or lower is to illuminate the leaves sufficiently to promote photosynthesis, and the tannin of the "astringent ingredient" is appropriately mixed with theanine of the "umami ingredient". In the case of sencha, if the hot water temperature exceeds 83 ° C, the amount of "bitter (astringent) components" such as tannin and caffeine leached out too much, and the original "moderate astringency" of sencha cannot be obtained, and heat resistance is not obtained. This is because cups and sencha made of low-quality materials may be thermally deformed by hot water. On the other hand, if the temperature of the hot water is less than 67 ° C, the amount of tannin and caffeine leached out is too small, and the original "moderate astringency" of sencha is weakened, and the sterilizing effect of hot water on cups and teapots is also reduced. Is.

Furthermore, it is configured to close the valve and close the flow path when the temperature of the hot water in contact exceeds the operating temperature range, and open the valve and open the flow path when the temperature of the hot water in contact 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 supply 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 supply main body with the flow path closed, but the time When the hot water is cooled by the outside air temperature and drops to the operating temperature within the appropriate 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 supply device main body. Therefore, unlike the hot water cooling method, it is not necessary to transfer the cup many times, and unlike the temperature measurement method, it is not necessary to constantly visually monitor the temperature display, and the work load on the user can be reduced.

Further, it is more preferable that the operating temperature range is either 50 ° C. or higher and 60 ° C. or lower, or 70 ° C. or higher and 80 ° C. or lower.

This is because in the case of gyokuro, when the hot water temperature exceeds 60 ° C., tannins and caffeine are still abundant, so that the original "umami" of gyokuro has a miscellaneous taste. On the other hand, when the temperature of the hot water is less than 50 ° C., the amount of theanine exuded is still small, so that "umami" may not be ensured depending on the amount of tea leaves.

Further, in the case of sencha, when the hot water temperature exceeds 80 ° C., tannins and caffeine are still abundant, so that the original "moderate astringency" of sencha can be felt as a miscellaneous taste. On the other hand, when the temperature of the hot water is less than 70 ° C., the amount of tannin, caffeine and the like leached out is still small, so that "moderate astringency" may not be ensured depending on the amount of tea leaves.

By matching the operating temperature range of the shape storage material with the appropriate hot water temperature range of various Japanese teas, it is possible to deal with other than the above-mentioned gyokuro and sencha. Further, it may be applied to other than Japanese tea (for example, coffee, soup, etc.).

Further, the shape storage material has a sensing unit that senses the temperature of the hot water in contact with the hot water, and the sensing unit is located near the position where the low-rise flow flowing along the inner bottom surface of the hot water supply device flows into the outlet. If it is provided, it can be expected that the setting accuracy to the desired temperature will be further improved.
That is, by directly sensing the change in the hot water temperature near the outlet with the sensing unit and restoring the shape memory material to a predetermined shape based on the hot water temperature immediately before flowing down from the outlet, the valve body can be made more accurate. It can be moved based on the above, and it can be expected that the setting accuracy to the desired temperature will be further improved.

Further, the valve mechanism is provided so that the outlet can be closed, and has a partition member in which a 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 easily simplified and made compact, and the device cost and running cost can be reduced.

Further, the valve mechanism has a columnar inner pillar portion arranged inside as a partition member and a tubular outer pipe portion arranged outside as a valve body, and is provided on the outer periphery of the inner pillar portion. A shape memory spring, which is a shape memory material, is wound around the inner column in one of the spaces formed between the portion and the front and rear ends in the sliding direction of the outer pipe portion, and a return spring is inside in the other of the spaces. When the outer tube is slidable with respect to the inner column due to the restoring force of the shape memory effect of the shape memory spring and the elastic force of the return spring by being wound around the column. Can be configured as a multi-tube (including a double tube) having an inner column portion and an outer tube portion, and the valve mechanism can be further made compact.

Further, when at least the vicinity of the valve mechanism in the hot water supply main body is made transparent or translucent, or when the hot water supply main body is provided with an upper opening, the outer pipe portion as the valve body slides with respect to the inner pillar portion. The change in appearance due to the change in appearance can be visually recognized from the outside, the opening and closing of the flow path can be easily grasped as the change in appearance of the valve body, and the change in appearance of the valve body can be enjoyed as an aesthetic change.

Further, the valve mechanism has a tubular outer pipe portion arranged on the outside as a partition member and a columnar inner pillar portion arranged on the inside as a valve body, and is provided on the outer periphery of the inner pillar portion. A shape memory spring, which is a shape memory material, is wound around the inner column in one of the spaces formed between the portion and the front and rear ends in the sliding direction of the outer pipe portion, and a return spring is inside in the other of the spaces. When the inner pillar part is configured to be slidable with respect to the outer pipe part by the restoring force due to the shape memory effect of the shape memory spring and the elastic force of the return spring by being wound around the pillar part. Can be configured as a multi-tube (including a double tube) having an inner column portion and an outer tube portion, and the valve mechanism can be further made compact.

Further, when at least the vicinity of the valve mechanism is made transparent or translucent in the hot water supply main body, or when the hot water supply main body is provided with an upper opening, the inner pillar portion as the valve body slides with respect to the outer pipe portion. The change in appearance due to the change in appearance can be visually recognized from the outside, the opening and closing of the flow path can be easily grasped as the change in appearance of the valve body, and the change in appearance of the valve body can be enjoyed as an aesthetic change.

Further, the valve mechanism has a case body arranged as a partition member and a slide piece arranged inside the case body as a valve body, and the sliding direction end face of the slide piece and the sliding direction inside the case body. A shape memory spring, which is a shape memory material, is arranged on one side of the space formed between the front and rear surfaces, and a return spring is arranged on the other side of the space. And, when the slide piece is made slidable with respect to the case body by the elastic force of the return spring, the valve mechanism can be made into an integrated structure in which the slide piece is housed in the case body. The valve mechanism can be further made more compact.

Furthermore, if at least the vicinity of the valve mechanism is made transparent or translucent in the hot water supply main body, or if the hot water supply main body is provided with an upper opening, the slide piece as the valve body slides with respect to the case body. The change in appearance can be visually recognized from the outside, the opening and closing of the flow path can be easily grasped as the change in the appearance of the valve body, and the change in the appearance of the valve body can be enjoyed as an aesthetic change.

Further, the valve mechanism has a plate body arranged as a partition member and a bent piece arranged on the outlet side of the plate body as a valve body, and the bent piece has a shape memory spring which is a shape memory material. Therefore, when at least a part of the bent piece is configured to be bendable with respect to the plate body by the restoring force due to the shape memory effect of the shape memory spring and the water pressure at which the bent piece is pushed toward the outlet side by hot water. In addition to integrating the valve body and the shape memory material, it is possible to omit members such as a return spring by using water pressure to push the shape memory material and balance it at a predetermined open position. The valve mechanism can be further made compact.

Further, when at least the vicinity of the valve mechanism in the hot water supply main body is made transparent or translucent, or when the hot water supply main body is provided with an upper opening, the appearance of the bent piece as the valve body due to bending with respect to the plate body. The change can be visually recognized from the outside, the opening and closing of the flow path can be easily grasped as a change in the appearance of the valve body, and the change in the appearance of the valve body can be enjoyed as an aesthetic change.

The hot water supply device 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 the example of the hot water supply device of this invention. It is a schematic diagram (2) for demonstrating the whole structure of the example of the hot water supply device 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 the 2nd Embodiment. It is a schematic diagram for demonstrating the valve mechanism of the 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, embodiments for carrying out the invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings. The explanation will be given in the following order.
1. 1. First Embodiment 2. Second embodiment 3. Third embodiment 4. Fourth Embodiment 5. Modification example

<1. First Embodiment>
[Explanation of the overall configuration]
The present invention is applied to FIGS. 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 and FIG. 2 (b) is a front sectional view). It is a schematic diagram for demonstrating an example of a hot water supply device, and the dripper 1 (an example of a hot water supply device) shown here includes a dripper main body 4 (an example of a hot water supply device main body) and a valve mechanism 5. ..

Here, the dripper main body 4 is configured 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 protrusion 4b is vertically hung from the substantially center of the dripper main body 4 in a plan view, and an outlet 4d is formed (drilled) at the lower end (tip) of the protrusion 4b.

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

Then, by inserting the protruding portion 4b of the dripper main body 4 into the upper openings of the cup 2 (see FIG. 1) and the teapot 3 (see FIG. 2) from above, the dripper main body 4 is placed on the cup 2 and the teapot 3. Can be placed stably in.

In the dripper 1 configured in this way, 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 the present embodiment) 15 housed in the cup 2 and the teapot 3. Tea can be brewed by supplying it.

[Explanation of valve mechanism]
FIG. 3A is a schematic view for explaining an example of the valve mechanism of the hot water supply device to which the present invention is applied, and the valve mechanism 5 shown here is a hollow columnar inner pillar portion 9 arranged inside. It has a tubular outer pipe portion 8 arranged outside the inner pillar portion 9 as a valve body.

In addition, in FIGS. 3A and 3B, the right view of the front view shows the side sectional view in the valve open state, and the left view of the front view shows the side sectional view in the closed state.

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

Further, a hakama-shaped convex portion 9b is formed on the outer periphery of the inner pillar portion 9 in the vertical direction, and the inner pillar portion 9 penetrates the inner pillar portion 9 in the radial direction between the convex portion 9b and the uneven portion 9a. A tubular flow path 9c is formed.

Further, the outer pipe portion 8 is located on the axis 13 common to the inner pillar portion 9, and the upper sliding frame 8a in which the upper portion of the tubular body is folded inward and downward and the lower portion of the tubular body are folded inward and upward. It also has a lower sliding frame 8b. The upper sliding frame 8a is slidably fitted on the outer periphery above the convex portion 9b of the inner pillar portion 9, and the lower sliding frame 8b is below the convex portion 9b of the inner pillar portion 9. The outer circumference is slidably fitted.
The lower end of the outer pipe portion 8 abuts on the upper surface of the seal member 14, thereby defining the lower limit position of the outer pipe portion 8.

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

Further, a plurality of outer holes 8f penetrating in the radial direction are arranged side by side in the peripheral wall 8c, and an inner hole 8g penetrating diagonally downward from the lower space 17 is provided in the lower sliding frame 8b.

Here, the outer pipe portion 8 which is a valve body is moved by utilizing 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 main body 4 comes into contact with the shape memory spring 11, the shape memory spring 11 is restored to a predetermined shape (shortened shape or elongated shape in the present embodiment) with high temperature response, and this restoration is performed. The outer pipe portion 8 is moved by the force to open and close the flow path to the outlet 4d. Therefore, when the hot water in contact reaches a desired temperature, the flow path 6 is quickly opened, and the hot water can flow down from the inside of the dripper main body 4 through the outlet 4d.

In the present embodiment, the operating temperature range of the shape memory spring 11 is matched with the appropriate hot water range of gyokuro, which is 47 ° C. or higher and 63 ° C. or lower. 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 and closes the flow path, and the hot water in contact with the shape memory spring 11 At an operating temperature within the operating temperature range (a temperature of 47 ° C. or higher and 63 ° C. or lower), the valve mechanism 5 opens the valve to open the flow path. In the valve mechanism 5 of the present embodiment, the valve open state is maintained even at a low temperature below the operating temperature range (low temperature below 47 ° C.).

The shape memory spring 11 may be configured to be able to detect the hot water temperature as a whole, or detect the hot water temperature only at a portion in contact with the low-rise 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 hot water temperature of the low-rise stream 18 can be reliably sensed.

[Operation explanation]
In the dripper 1 of the present embodiment, when the outside air is at room temperature of about 15 to 25 ° C., the shape memory spring 11 of the lower space 17 is in a shortened state as shown in the right figure of FIG. 3A. Therefore, the elastic force of the return spring 10 of the upper space 16 pushes up the upper inner end 8d of the outer pipe portion 8 starting from the convex portion 9b of the inner pillar portion 9, and the return spring 10 is in an extended state. As a result, the upper end of the outer pipe portion 8 protrudes upward from the upper end of the inner pillar portion 9 (hereinafter, referred to as “protruding state”).

In this protruding state, the outer pipe portion 8 is pushed up, the lower sliding frame 8b of the outer pipe portion 8 is located above the inner cylinder flow path 9c of the inner pillar portion 9, and the inner cylinder flow path 9c is opened. The Rukoto. Further, the inner cylinder flow path 9c communicates with the lower space 17 via the inner hole 8g.

In this protruding 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 along the inner bottom surface 4c of the dripper main body 4. Then, it flows into the lower space 17 through the outer hole 8f and comes into contact with the sensing portion of the shape memory spring 11.

Then, when the low-rise flow 18 comes into contact with the shape memory spring 11, the shape memory spring 11 in the lower space 17 resists the elastic force of the return spring 10 by its restoring force, as shown in the left figure of FIG. 3 (a). It stretches and becomes an stretched state. Therefore, the lower inner end 8e of the outer pipe portion 8 is pushed down from the convex portion 9b of the inner pillar 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 is substantially flush with the upper end of the inner pillar portion 9 (hereinafter, referred to as “plane”).

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 comes into contact with the seal member 14 and the inner pillar portion 9, and the inner cylinder flow path 9c of the inner pillar portion 9 Will be blocked. Further, the inner hole 8g of the outer pipe portion 8 is also closed by the inner pillar portion 9.

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

After that, the hot water is cooled by the outside air temperature with the leaving time, and when the hot water temperature drops to the operating temperature within the operating temperature range (47 ° C. or higher and 63 ° C. or lower), the protruding state as shown in the right figure of FIG. 3 (a) again. It becomes.

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

[effect]
In the dripper 1 to which the present invention is applied as described above, the shape memory effect of the shape memory spring 11 is used to open and close the flow path 6 with high temperature response, and the temperature of the hot water in contact with the sensing portion of the shape memory spring 11 is reached. The flow path 6 can be opened immediately after the temperature reaches 63 ° C., and highly accurate temperature control can be realized. In addition, it is not necessary to transfer the temperature to the cup many times as in the hot water cooling method, or to continuously monitor the temperature display visually as in the temperature measurement method.

Furthermore, since the temperature range of gyokuro can be controlled with high accuracy, the original "umami" of gyokuro can be fully felt.

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 made to function as an expected effect given to the user. That is, when the dripper 1 is used, the hot water in the dripper main body 4 is supplied downward and poured into the tea leaves 15, and the user can have the expectation that the delicious tea will be tasted soon.

Further, the valve mechanism 5 is configured as a double pipe structure of the inner pillar portion 9 and the outer pipe portion 8, and the valve mechanism 5 can be easily made compact and compact, so that the dripper 1 can be made compact and low. Expected to increase costs.

[Modification example]
In the present embodiment, the case where the return spring 10 is wound around the upper space 16 and the shape memory spring 11 is wound around the lower space 17 is described as an example, but as shown in FIG. 3 (b). In addition, the shape memory spring 11 may be wound around the upper space 16 and the return spring 10 may be wound around the lower space 17 according to the depth of the protruding portion 4b 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-rise flow 18 easily flows into the lower space 17, whereas the depth of the protruding portion 4b of the dripper 1 is small. When it is deep (see FIG. 3B), the low-rise flow 18 easily flows into the upper space 16.
Therefore, when the depth of the protruding portion 4b of the dripper 1 is deep (see FIG. 3B), the shape memory spring 11 is wound around the upper space 16 in which the low-rise flow 18 easily flows, so that the temperature is highly accurate. Control can be expected.

Here, when the shape memory spring 11 is wound around the upper space 16, when the outside air is at room temperature of about 15 to 25 ° C., as shown in the right figure of FIG. 3B, the shape memory spring of the upper space 16 is formed. 11 is in the shortened state. Therefore, the elastic force of the return spring 10 in the lower space 17 pushes down the lower inner end 8e of the outer pipe portion 8 starting from the convex portion 9b of the inner pillar portion 9, and the return spring 10 is in an extended state. As a result, the upper end of the outer pipe portion 8 is substantially flush with the upper end of the inner pillar portion 9 (flat state).

In the modified example, the inner hole 8g is not provided, and the lower sliding frame 8b is configured so that the lower space 17 and the inner cylinder flow path 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, high-temperature hot water (hot water exceeding 63 ° C.) flows along the inner bottom surface 4c of the dripper main body 4. Then, it flows into the upper space 16 through the outer hole 8f and comes into contact with the sensing portion of the shape memory spring 11.

Then, when the low-rise flow 18 comes into contact with the shape memory spring 11, the shape memory spring 11 in the upper space 16 resists the elastic force of the return spring 10 by its restoring force, as shown in the left figure of FIG. 3 (b). It stretches and becomes an stretched state. Therefore, the upper inner end 8d of the outer pipe portion 8 is pushed up from the convex portion 9b of the inner pillar portion 9, and the return spring 10 of the lower space 17 is in a shortened state. As a result, the upper end of the outer pipe portion 8 protrudes upward from the upper end of the inner pillar portion 9 (protruding state).

Then, in the modified example, the inner cylinder flow path 9c is blocked by the lower sliding frame 8b in the protruding state.

<2. Second Embodiment>
Since the dripper 1 of the second embodiment is different from the first embodiment only in the configuration of the valve mechanism 5, the description of the overall configuration will be omitted.

[Explanation of valve mechanism]
FIG. 4A is a schematic view for explaining another example of the valve mechanism of the hot water supply device to which the present invention is applied, and the valve mechanism 5 shown here is a tubular outer pipe portion arranged on the outside. It has 8 and a columnar inner pillar portion 9 arranged inside the outer pipe portion 8 as a valve body.

In FIGS. 4A and 4B, the right view in the front view shows a side sectional view in the valve open state, and the left view in the front view shows the side sectional view in the closed state.

Here, the outer pipe portion 8 is fixed to the dripper main body 4 as a partition member.
Specifically, the O-ring 21 (annular packing) is fitted into the recess provided in the outer pipe portion 8 and is inserted and fixed to the protruding portion 4b 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 tubular body is folded inward and downward, and a lower frame 8i in which the lower portion of the tubular body is folded inward and upward.

Further, the inner pillar portion 9 is located on the axis 13 common to the outer pipe portion 8, and a hakama-shaped convex portion 9b is formed on the outer periphery of the inner pillar portion 9 in the vertical direction. Further, the inner pillar 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, the space surrounded by the peripheral wall 8c, the upper frame 8h, the lower frame 8i, and the outer peripheral surface of the inner pillar portion 9 constituting the outer peripheral surface of the outer pipe portion 8 is above the convex portion 9b of the inner pillar portion 9. (In other words, the upper space 16 formed between the convex portion 9b and the upper inner end 8d) and below the convex portion 9b of the inner pillar portion 9 (in other words, the convex portion 9b and the lower inner end 8). It is divided into the lower space 17 formed in the space).
Then, in the upper space 16, the return spring 10 is wound around the inner pillar portion 9 in a compressed state. Further, a shape memory spring 11 (an example of a shape memory material) is wound around an inner pillar portion 9 in the lower space 17.

Further, a plurality of outer holes 8f penetrating in the radial direction are arranged side by side in the peripheral wall 8c in the vertical direction.

Here, the shape memory effect according to the temperature of the hot water in contact with the shape memory spring 11 is used to move the inner pillar portion 9 which is a valve body so that the flow path can be closed.
That is, when the hot water injected into the dripper main body 4 comes into contact with the shape memory spring 11, the shape memory spring 11 is restored to a predetermined shape (shortened shape or elongated shape in the present embodiment) with high temperature response, and this restoration is performed. The inner pillar portion 9 is moved by the force to open and close the flow path to the outlet 4d. Therefore, when the hot water in contact reaches a desired temperature, the flow path 6 is quickly opened, and the hot water can flow down from the inside of the dripper main body 4 through the outlet 4d.

In the present embodiment, the operating temperature range of the shape memory spring 11 is matched with the appropriate hot water range of gyokuro, which is 47 ° C. or higher and 63 ° C. or lower. That is, when the temperature of the hot water in contact with the shape memory spring 11 exceeds the operating range temperature (high temperature exceeding 63 ° C.), the valve mechanism 5 closes and closes the flow path, and the hot water in contact with the shape memory spring 11 At an operating temperature within the operating temperature range (a temperature of 47 ° C. or higher and 63 ° C. or lower), the valve mechanism 5 opens the valve to open the flow path. In the valve mechanism 5 of the present embodiment, the valve open state is maintained even at a low temperature below the operating temperature range (low temperature below 47 ° C.).

The shape memory spring 11 may be configured to be able to detect the hot water temperature as a whole, or may be configured to be able to detect the hot water temperature only at a portion in contact with the low-rise flow 18 flowing along the inner bottom surface of the dripper main body 4. May be done. Further, the form of the sensing unit is not particularly limited as long as the hot water temperature of the low-rise stream 18 can be reliably sensed.

[Operation explanation]
In the dripper 1 of the present embodiment, when the outside air is at room temperature of about 15 to 25 ° C., the shape memory spring 11 of the lower space 17 is in a shortened state as shown in the right figure of FIG. 4 (a). Therefore, the elastic force of the return spring 10 of the upper space 16 pushes down the convex portion 9b of the inner pillar portion 9 starting from the upper inner end 8d of the outer pipe portion 8, and the return spring 10 is in an extended state. As a result, the upper end of the inner pillar portion 9 is substantially flush with the upper end of the outer pipe portion 8 (flat state).

In this flush state, the inner pillar portion 9 is pushed down, the contact between the inner pillar portion 9 and the lower frame 8i of the outer pipe 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, high-temperature hot water (hot water exceeding 63 ° C.) flows along the inner bottom surface 4c of the dripper main body 4. It becomes 18, and flows into the lower space 17 through the outer hole 8f and comes into contact with the sensing portion of the shape memory spring 11.

Then, when the low-rise flow 18 comes into contact with the shape memory spring 11, the shape memory spring 11 in the lower space 17 resists the elastic force of the return spring 10 by its restoring force, as shown in the left figure of FIG. 4 (a). It stretches and becomes an stretched state. Therefore, the convex portion 9b of the inner pillar portion 9 is pushed up from the lower inner end 8e of the outer pipe portion 8, and the return spring 10 of the upper space 16 is shortened. As a result, the upper end of the inner pillar portion 9 is in a state of protruding upward from the upper end of the outer pipe portion 8 (protruding state).

In this protruding state, the inner pillar portion 9 is pushed up, the inner pillar portion 9 and the lower frame 8i of the outer pipe portion 8 come into contact with each other, and the flow path 6 is closed.

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

After that, the hot water is cooled by the outside air temperature with the leaving time, and when the hot water temperature drops to the operating temperature within the operating temperature range (47 ° C. or higher and 63 ° C. or lower), the surface as shown in the right figure of FIG. 4A again. It becomes one state.

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

[effect]
In the dripper 1 to which the present invention is applied as described above, the shape memory effect of the shape memory spring 11 is used to open and close the flow path 6 with high temperature responsiveness. Highly accurate temperature control can be realized. In addition, it is not necessary to transfer the temperature to the cup many times as in the hot water cooling method, or to continuously monitor the temperature display visually as in the temperature measurement method.

Furthermore, the above-mentioned first point is that the original "umami" of Gyokuro can be fully felt, that the user can have a sense of expectation, that the dripper 1 can be made compact and that the cost can be reduced. It is the same as the embodiment of.

[Modification example]
In the present embodiment, the case where the return spring 10 is wound around the upper space 16 and the shape memory spring 11 is wound around the lower space 17 is described as an example, but as shown in FIG. 4 (b). In addition, the shape memory spring 11 may be wound around the upper space 16 and the return spring 10 may be wound around the lower space 17 according to the depth of the protruding portion 4b 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-rise flow 18 easily flows into the lower space 17, whereas the depth of the protruding portion 4b of the dripper 1 is small. When it is deep (see FIG. 4B), the low-rise flow 18 tends to flow into the upper space.
Therefore, when the depth of the protruding portion 4b of the dripper 1 is deep (see FIG. 4B), the shape memory spring 11 is wound around the upper space 16 in which the low-rise flow 18 easily flows, so that the temperature is highly accurate. Control can be expected.

Here, when the shape memory spring 11 is wound around the upper space 16, when the outside air is at room temperature of about 15 to 25 ° C., as shown in the right figure of FIG. 4B, the shape memory spring of the upper space 16 is formed. 11 is in the shortened state. Therefore, the elastic force of the return spring 10 in the lower space 17 pushes up the convex portion 9b of the inner pillar portion 9 starting from the lower inner end 8e of the outer pipe portion 8, and the return spring 10 is in an extended state. As a result, the upper end of the inner pillar portion 9 is in a state of protruding upward from the upper end of the outer pipe portion 8 (protruding state).

Then, in the modified example, the contact between the inner pillar portion 9 and the lower frame 8i of the outer pipe portion 8 is released in the protruding state, and the flow path 6 is configured to open.

In this protruding 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-rise flow 18 flowing along the inner bottom surface 4c of the dripper main body 4. , It flows into the upper space 16 through the outer hole 8f and comes into contact with the sensing portion of the shape memory spring 11.

Then, when the low-rise flow 18 comes into contact with the shape memory spring 11, the shape memory spring 11 in the upper space 16 resists the elastic force of the return spring 10 by its restoring force, as shown in the left figure of FIG. 4 (b). It stretches and becomes an stretched state. Therefore, the convex portion 9b of the inner pillar portion 9 is pushed down from the upper inner end 8d of the outer pipe portion 8, and the return spring 10 of the lower space 17 is in a shortened state. As a result, the upper end of the inner pillar portion 9 is substantially flush with the upper end of the outer pipe portion 8 (flat state).

In the modified example, the inner pillar portion 9 and the lower frame 8i of the outer pipe portion 8 are in contact with each other in a flush state, and the flow path 6 is closed.

<3. Third Embodiment>
Since the dripper 1 of the third embodiment is different only in the configuration of the valve mechanism 5 from the first embodiment and the second embodiment, the description of the overall configuration will be omitted.

[Explanation of valve mechanism]
5 (a) is a plan view, FIG. 5 (b) is a side sectional view in a valve closed state, and FIG. 5 (c) is a side sectional view in a valve open state) of the hot water supply device to which the present invention is applied. It is a schematic diagram for demonstrating still another example of a valve mechanism, and the valve mechanism 5 shown here has a case body 22 arranged as a partition member, and a slide piece arranged inside the case body 22 as a valve body. 23 and.

Here, the case body 22 is fixed to the dripper main body 4.
Specifically, a disk-shaped seal member 14 such as a packing is inserted and fixed to the protruding portion 4b of the dripper main body 4 from above, and a groove portion is provided on the side surface of the vertical through hole 14a of the seal member 14. ing. Then, the case body 22 is fixed to the dripper main body 4 by engaging such a groove portion with the uneven portion 22b provided at the lower part of the case body 22.

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

Further, the slide piece 23 is provided with a vertical through hole 23a and is slidably housed in the storage space of the case body 22. Then, when the slide piece 23 slides and the vertical through hole 23a is located substantially in the center of the dripper main body 4 in the 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. Will be.

Further, the return spring 10 is arranged in a compressed state on one side between the slide piece 23 and the inner surface of the accommodation space of the case body 22. Further, a shape memory spring 11 (an example of a shape memory material) is arranged on the other side between the slide piece 23 and the inner surface of the accommodation space of the case body 22, and the upper region (reference numeral) of the arrangement position of the shape memory spring 11 is arranged. The region (indicated by 22c) is open.

Here, the slide piece 23, which is a valve body, is moved by utilizing 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 main body 4 comes into contact with the shape memory spring 11, the shape memory spring 11 is restored to a predetermined shape (shortened shape or elongated shape in the present embodiment) with high temperature response, and this restoration is performed. The slide piece 23 moves by the force to open and close the flow path to the outlet 4d. Therefore, when the hot water in contact reaches a desired temperature, the flow path 6 is quickly opened, and the hot water can flow down from the inside of the dripper main body 4 through the outlet 4d.

In the present embodiment, the operating temperature range of the shape memory spring 11 is matched with the appropriate hot water range of gyokuro, which is 47 ° C. or higher and 63 ° C. or lower. 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 and closes the flow path, and the hot water in contact with the shape memory spring 11 At an operating temperature within the operating temperature range (a temperature of 47 ° C. or higher and 63 ° C. or lower), the valve mechanism 5 opens the valve to open the flow path. In the valve mechanism 5 of the present embodiment, the valve open state is maintained even at a low temperature below the operating temperature range (low temperature below 47 ° C.).

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

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

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

Then, when the hot water comes into 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 is in an extended state. .. As a result, the slide piece 23 is pushed to the right in FIG. 5, and the return spring 10 is in the shortened state.

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

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

After that, the hot water is cooled by the outside air temperature with the leaving time, and when the hot water temperature drops to the operating temperature within the operating temperature range (47 ° C. or higher and 63 ° C. or lower), the state as shown in FIG. 5 (c) is obtained again.

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

[effect]
In the dripper 1 to which the present invention is applied as described above, the shape memory effect of the shape memory spring 11 is used to open and close the flow path 6 with high temperature responsiveness. Similar to the embodiment, highly accurate temperature control can be realized. In addition, it is not necessary to transfer the temperature to the cup many times as in the hot water cooling method, or to continuously monitor the temperature display visually as in the temperature measurement method.

Further, it is the same as the first embodiment and the second embodiment described above in that the original "umami" of gyokuro can be fully felt and the user can have a feeling of expectation. ..

Further, the valve mechanism 5 is configured as an integrated structure in which the slide piece 23 is housed in the case body 22, and the valve mechanism 5 can be easily simplified and made compact, so that the dripper 1 can be made compact and cost-reduced. Can be expected.

<4. Fourth Embodiment>
Since the dripper 1 of the fourth embodiment is different only in the configuration of the valve mechanism 5 from the first to third embodiments, the description of the overall configuration will be omitted.

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

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

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

Further, the bent piece 25 is configured to have a shape memory spring (not shown), and by fixing only one end side to the plate body 24 and making the other end side a free end, it is in a flat plate state (non-flat state). It is configured to be able to form a bent state) and a bent state.

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

In the present embodiment, the operating temperature range of the shape memory spring is matched with the appropriate hot water range of gyokuro of 47 ° C. or higher and 63 ° C. or lower. 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 and closes the flow path, and the temperature of the hot water in contact with the shape memory spring operates. At an operating temperature within the temperature range (a temperature of 47 ° C. or higher and 63 ° C. or lower), the valve mechanism 5 opens the valve to open the flow path. In the valve mechanism 5 of the present embodiment, the valve open state is maintained even at a low temperature below the operating temperature range (low temperature below 47 ° C.).

[Operation explanation]
In the dripper 1 of the present embodiment, when the outside air is at room temperature of about 15 to 25 ° C., as shown by the solid line in FIG. 6B, the bent piece 25 is in a bent state 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, hot water (hot water exceeding 63 ° C.) comes into contact with the sensing portion of the shape memory spring.

When the hot water comes into contact with the shape memory spring, the bent piece 25 becomes a flat plate and the flow path 6 is closed, as shown by the dotted line in FIG. 6B.

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

After that, the hot water is cooled by the outside air temperature with the leaving time, and when the hot water temperature drops to the operating temperature within the operating temperature range (47 ° C. or higher and 63 ° C. or lower), the state as shown by the solid line in FIG. Become.

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

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

Furthermore, the points that the original "umami" of gyokuro can be fully felt and that the user can have a sense of expectation are also the above-mentioned first embodiment, second embodiment, and third embodiment. It is the same as the embodiment.

Further, the valve mechanism 5 is configured without using the return spring 10, and the valve mechanism 5 can be easily simplified and made compact, so that the dripper 1 can be expected to be made compact and cost-reduced.

<5. Modification example>
[Modification 1]
In the first to fourth embodiments described above, the case where gyokuro is used as the tea leaf 15 is described as an example, but the tea leaf 15 does not have to be gyokuro and is sencha. Is also good. When sencha is used as the tea leaves 15, the operating temperature range of the shape memory spring 11 is matched with the appropriate hot water range of sencha, which is 67 ° C. or higher and 83 ° C. or lower.

[Modification 2]
Further, in the first to fourth embodiments described above, the case where the tea leaves are contained in the cup 2 (see FIG. 1) and the teapot 3 (see FIG. 2) will be described as an example. However, as shown in FIG. 7, even if the teapot 26 is screwed (attached) to the dripper main body 4, the teapot net 27 is laid in the teapot 26, and the tea leaves 15 are housed in the teapot 26. good.
7 (a) is a cross-sectional view in a state where the protruding portion 4b of the dripper main body 4 is cut substantially horizontally and the tea strainer stopper 26 is attached, and FIG. 7 (b) is the outer periphery of the protruding portion 4b of the dripper main body 4. It is sectional drawing of the state which attached the tea strainer stopper 26 to.

1 Dripper 2 Cup 3 Kyusu 4 Dripper body 4a Upper opening 4b Protruding part 4c Inner bottom surface 4d Outlet 5 Valve mechanism 6 Flow path 8 Outer pipe part 8a Upper sliding frame 8b Lower sliding frame 8c Circumferential wall 8d Upper inner end 8e Lower inner End 8f Outer hole 8g Inner hole 8h Upper frame 8i Lower frame 9 Inner pillar part 9a Concavo-convex part 9b Convex part 9c Inner cylinder flow path 10 Return spring 11 Shape memory spring 13 Axial center 14 Seal member 14a Vertical through hole 15 Tea leaf 16 Top Space 17 Lower space 18 Low-rise 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 net

Claims (5)

A hot water supply device main body in which hot water is injected and stored, and an outlet through which the hot water flows down is formed at the bottom.
The shape memory material has a valve body that can open and close the flow path communicating with the outlet, and a shape memory material that moves the valve body by utilizing the shape memory effect according to the temperature of the hot water in contact with the valve body. The operating temperature range is either 47 ° C. or higher and 63 ° C. or lower, or 67 ° C. or higher and 83 ° C. or lower. It is provided with a valve mechanism configured to open the valve and open the flow path when the temperature of the hot water in contact is within the operating temperature range.
The valve mechanism is
A case body fixed as a partition member to the lower part of the hot water supply main body and having a vertical through hole leading to the outlet, and a case body.
The case body is horizontally slidably arranged as the valve body in a storage space provided by opening toward the upper opening of the hot water supply main body, and the outlet and the hot water supply device are provided. A slide piece having a through hole that can open and close the flow path formed between the inside of the main body,
Of the spaces formed at two locations between both end faces in the sliding direction of the slide piece and the abutting surfaces in the sliding direction of the slide piece forming the accommodation space, the hot water supply device. A shape memory spring, which is a shape memory material, horizontally arranged inside the space through which a low-rise flow flowing from the inner bottom surface of the main body to the upper surface of the case body passes.
It has a return spring located on the other side of the space and
When the temperature of the hot water deviates from the operating temperature range, the shape memory spring and the return spring have a required length, the slide piece moves, and the through hole and the vertical through hole deviate from each other. When the temperature of the hot water falls within the operating temperature range, the shape memory spring expands or contracts to a required length by the restoring force due to the shape memory effect, so that the slide piece moves to the through hole. A hot water supply device in which the vertical through holes are combined to form the flow path. A hot water supply device main body in which hot water is injected and stored, and an outlet through which the hot water flows down is formed at the bottom.
The shape memory material has a valve body that can open and close the flow path communicating with the outlet, and a shape memory material that moves the valve body by utilizing the shape memory effect according to the temperature of the hot water in contact with the valve body. The operating temperature range is either 47 ° C. or higher and 63 ° C. or lower, or 67 ° C. or higher and 83 ° C. or lower. It is provided with a valve mechanism configured to open the valve and open the flow path when the temperature of the hot water in contact is within the operating temperature range.
The valve mechanism is
A hakama-shaped convex portion is formed on the outer peripheral surface in the middle of the vertical direction, and an inner pillar portion fixed as a partition member to the hot water supply main body and the inner pillar portion.
It is on the same axis as the inner pillar portion, has an upper frame and a lower frame, and is slidably fitted to the inner pillar portion in a state where the upper frame is in contact with the outer peripheral surface above the convex portion. The outer pipe, which is the valve body, forms a space portion between the inner pillar portion and the upper space located above the convex portion and the lower space located below the convex portion. Department and
A return spring that is wound around the inner pillar and accommodated in the upper space or the lower space.
The return spring is wound around the inner pillar portion and accommodated in the upper space or the lower space on which the return spring is not accommodated, and the outer tube is accommodated by utilizing the shape memory effect according to the temperature of the hot water in contact. A shape memory spring, which is a shape memory material capable of forming the flow path connected to the housed upper space or the lower space by moving the portion, and a shape memory spring.
It is provided so as to penetrate the peripheral wall of the outer pipe portion in the radial direction, and is provided from the outside of the outer pipe portion toward the upper space or the lower space in which the shape memory spring is housed, and supplies hot water. A hot water supply device having a plurality of outer holes arranged side by side in the vertical direction through which a low-rise flow flowing along the inner bottom surface of the container body passes. A hot water supply device main body in which hot water is injected and stored, and an outlet through which the hot water flows down is formed at the bottom.
The shape memory material has a valve body that can open and close the flow path communicating with the outlet, and a shape memory material that moves the valve body by utilizing the shape memory effect according to the temperature of the hot water in contact with the valve body. The operating temperature range is either 47 ° C. or higher and 63 ° C. or lower, or 67 ° C. or higher and 83 ° C. or lower. It is provided with a valve mechanism configured to open the valve and open the flow path when the temperature of the hot water in contact is within the operating temperature range.
The valve mechanism is
An outer pipe portion having an upper frame and a lower frame and fixed to the hot water supply main body as a partition member,
A hakama-shaped convex portion is formed on the outer peripheral surface in the middle of the vertical direction, which is on the common axis with the outer pipe portion, and the outer peripheral surface above the convex portion can slide in contact with the upper frame. The valve body is internally fitted and forms a space portion between the outer pipe portion and an upper space located above the convex portion and a lower space located below the convex portion. Inner pillar and
A return spring that is wound around the inner pillar and accommodated in the upper space or the lower space.
The return spring is wound around the inner pillar portion and accommodated in the upper space or the lower space on which the return spring is not accommodated, and the shape memory effect according to the temperature of the hot water in contact is utilized to accommodate the inner pillar. A shape memory spring, which is a shape memory material capable of forming the flow path connected to the housed upper space or the lower space by moving the portion, and a shape memory spring.
It is provided so as to penetrate the peripheral wall of the outer tube portion in the radial direction, and is provided from the outside of the outer tube portion toward the upper space or the lower space in which the shape memory spring is housed, and supplies hot water. A hot water supply device having a plurality of outer holes arranged side by side in the vertical direction through which a low-rise flow flowing along the inner bottom surface of the container body passes. The operating temperature range is
The hot water supply device according to claim 1, 2 or 3, which is either 50 ° C. or higher and 60 ° C. or lower, or 70 ° C. or higher and 80 ° C. or lower. It is configured so that it can accommodate the object to be treated that is exposed to the hot water flowing down from the outlet and can be attached to the main body of the hot water supply device, and the hot water after the treatment of the object to be treated is filtered. The hot water supply device according to claim 1, 2, 3 or 4, comprising a processing plug for being discharged.

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