JP5650153B2 - Air bleeding structure of container and water server using the same - Google Patents

Description

  The present invention relates to an air vent structure for a container and a water server using the same, and more specifically, the liquid is placed below the first container from a first container that can be reduced and deformed as the liquid filled therein decreases. The present invention relates to an air vent structure for a container configured to be sent to the second container thus formed and a third container installed further below the second container, and a water server using the same.

  When the drinking water is sent from a water bottle containing drinking water to a cold water tank installed below the water bottle and a hot water tank installed further below the cold water tank, these water bottles and cold water are supplied. Various so-called airless water servers have been developed that make it difficult for the drinking water and the air to come into contact with each other in the tank or hot water tank, particularly in consideration of hygiene. As a container for the water server, a container such as a glass bottle or a plastic bottle is not deformed even if the drinking water is reduced by taking out the drinking water filled inside by gravity alone. It was used. In that case, as a result of air being mixed into the container by replacing the reduced amount of drinking water with the outside air, the germs originally contained in the air propagate in the container and preserve the drinking water. It was the main cause of damaging sex.

  On the other hand, a bag made of a plurality of synthetic resin films is disclosed as a container that can be reduced and deformed as the drinking water filled therein decreases (see, for example, Patent Document 1). In this bag body, it is preferable not to provide any spout or the like mainly for consideration of hygiene, cost reduction and prevention of leakage during transportation. In that case, when the drinking water is taken out from the inside of the bag body, it is necessary to make a hole in the bag body with a needle or the like.

  On the other hand, as shown by the solid line in FIG. 8A, a hole 42a is opened in the bottom surface 41a of a plastic bag (a kind of the bag body) 4a containing drinking water, and the drinking water is placed below the bag body 4a. A water server provided with a needle 8a to be sent to a storage tank (not shown) installed is disclosed (for example, see Patent Document 2). When the plastic bag 4a is above the needle 8a, the needle 8a automatically protrudes upward due to the weight of the drinking water in the plastic bag 4a and the tip of the needle 8a has a hole 42a in the bottom surface 41a of the plastic bag 4a. Can be opened.

  However, in the needle 8a of Patent Document 2 above, the hole 42a is opened in the bottom surface 41a of the plastic bag 4a containing drinking water, and at the same time, the tension acting to reduce the plastic bag 4a and the gravity applied to the drinking water are combined. As a result, the drinking water inside is taken out into the storage tank through the needle 8a. And when the drinking water in the plastic bag 4a decreases, as shown by the two-dot chain line in FIG. 8A, the tip of the needle 8a protruding on the bottom surface 41a of the reduced-sized plastic bag 4a ′ becomes an obstacle, It becomes difficult to take out the beverage liquid 40a 'above the needle 8a.

  Further, when the used plastic bag 4a ′ is lifted in order to replace the used plastic bag 4a ′ with a new one, the needle 8a is automatically accommodated downward, and the needle 8a is transferred from the plastic bag 4a ′. In this case, the residual liquid 40a ′ may leak out from the hole 42a opened in the bottom surface 41a of the plastic bag 4a ′. Accordingly, there has been a demand for reducing the residual liquid 40a 'as much as possible.

  Furthermore, at the start of use of the water server, only air is contained in the cold water tank and the hot water tank, and this air needs to be discharged out of the cold water tank and the hot water tank. For this reason, for example, in Patent Document 3, an exhaust valve that is manually operated as an exhaust means is provided in the upper part of the cold water tank, and when the air is discharged from the exhaust valve to the outside of the cold water tank, the discharged air is filled. Thus, a configuration in which drinking water flows down to a cold water tank is disclosed.

  According to Patent Document 3, it is troublesome to manually operate the exhaust valve, and the operation may be forgotten. Further, when the exhaust valve of the cold water tank stops functioning due to a failure or the like, drinking water may continue to leak from the exhaust valve. Furthermore, since the exhaust valve has a movable part, there is a problem that regular maintenance is required so that the movable part functions reliably.

  Therefore, for example, in Patent Document 4, as shown in FIG. 28, a cold water tank 5a to which drinking water W is supplied from a water bottle 4a via a needle 8a and the like is provided, and the cold water tank 5a is supplied from the cold water tank 5a. In the water server in which the discharge pipe 51a is pulled out and the drinking water W in the cold water tank 5a can be discharged to the outside of the cold water tank 5a through the discharge pipe 51a, the discharge pipe 51a goes into the cold water tank 5a. There is disclosed a main pipe part 51c having an opening 51b and a guide pipe part 53a that branches from the main pipe part 51c in the cold water tank 5 and faces the upper part in the tank 5a.

  According to the above-mentioned patent document 4, when air A is interposed in the upper part of the cold water tank 5a, if the internal drinking water W is discharged to the outside through the discharge pipe 51a, the inside of the main pipe portion 51c of the discharge pipe 51a is drinking water. A phenomenon occurs in which the air A intervening in the upper part of the cold water tank 5a is drawn to the main pipe part 51c side through the guide pipe part 53a due to the movement of the drinking water W in the main pipe part 51c. Thereby, the air A interposed in the upper part of the cold water tank 5a can be discharged | emitted out of the cold water tank 5a with the drinking water W of the cold water tank 5a. As a result, in the cold water tank 5a, it is possible to reduce the chance that the drinking water W and the air A are in contact with each other, and the exhaust means provided in the cold water tank 5a can be reduced in failure and require less maintenance. , And is described.

  However, in Patent Document 4, when the liquid level in the cold water tank 5a is low, the drinking water W becomes difficult to move in the main pipe portion 51c of the discharge pipe 51a, and the flow of the drinking water W in the main pipe portion 51c The phenomenon that the air A intervening in the upper part of the cold water tank 5a is drawn to the main pipe part 51c side through the guide pipe part 53a is less likely to occur. As a result, the air A accumulated in the cold water tank 5a is hardly exhausted to the outside.

  This does not correspond to the case where the most air needs to be discharged (at the time of initial air discharge), such as when the water server starts to be used, and it takes a long time until the inside of the cold water tank 5a becomes airless. There is a bug. Although not shown, the hot water tank installed further below the cold water tank 5a has the same problem as described above.

  The present invention was made in view of such circumstances, and an object of the present invention is to provide an air vent structure for a container and a water server using the same that can significantly reduce the time until the inside of the container becomes airless. To do.

  According to a first aspect of the present invention, there is provided a second container disposed below the first container, and a further lower part of the second container from the first container that can be reduced and deformed as the liquid filled therein decreases. An air vent structure for a container configured to sequentially supply to an installed third container, and a communication pipe that communicates the vicinity of the top in the second container and the inside of the third container in a descending manner; When the liquid is supplied to the second container through the needle by inserting a needle into the first container with the first container set at a predetermined position, the second container is connected to the second container via the communication pipe. A discharge pipe for discharging air or liquid discharged from the container into the third container from the vicinity of the top of the third container, and when the liquid is supplied from the first container to the second container, The air in the second container is compressed and this compressed air is The air is discharged into the third container through the communication pipe, and the air discharged into the third container is discharged from the third container to the outside through the discharge pipe. The liquid is filled, and the liquid filled in the second container is discharged into the third container through the communication pipe, so that the liquid is filled in the third container. To do.

  According to the first invention, in the state where the vicinity of the top in the second container and the inside of the third container communicate with each other in a descending manner, the first container is set in a predetermined position. When the liquid is supplied through the needle, the air or liquid discharged from the second container into the third container through the communication pipe is passed through the top of the third container. And a discharge pipe that discharges from the vicinity. When the liquid is supplied from the first container to the second container, the air in the second container is compressed, and the compressed air passes through the communication pipe. Air is discharged into the third container, and the air discharged into the third container is discharged from the third container to the outside through the discharge pipe, so that the liquid is filled in the second container. The liquid filled in the second container is transferred to the third container through the communication pipe. Liquid is filled into the third container by being discharged. As a result, particularly when the initial air is discharged, the time until the second container and the third container become airless can be greatly reduced.

  Moreover, it is preferable to comprise so that the said needle may be stabbed in the direction which becomes parallel or parallel to this bottom face near the bottom face of said 1st container.

  In this case, since the needle is pierced in the vicinity of the bottom surface of the first container in a direction parallel to or downward from the bottom surface, as shown by the solid line in FIG. The hole 42b is opened in a direction parallel to the bottom surface 41b or in a downward direction, and at the same time, the tension acting in the direction of contracting the container 4b and the gravity acting on the liquid act together, so that the liquid inside the needle 42 It is taken out through 8b.

  When the liquid in the container 4b decreases, the container 4b contracts and deforms. At this time, as shown by a two-dot chain line in FIG. 8B, the tip of the needle 8b does not get in the way. Most of the liquid in 4b 'can be taken out. When the liquid contained in the container 4b ′ is used up, as shown by the two-dot chain line in FIG. 8B, the container 4b ′ sticks around the needle 8b, and from the used container 4b ′ to the needle 8b. When removing the residual liquid 40b ', the residual liquid 40b' is less likely to leak from the hole 42b opened in the container 4b '.

  Further, the needle includes a needle body having a spire-shaped tip portion, and a needle guide having a guide portion for guiding the needle body, the tip portion of the needle body along the guide portion of the needle guide, It is preferable to configure so as to appear and disappear by manual operation or automatically.

  In this case, the needle includes a needle body having a spire-shaped tip portion, and a needle guide having a guide portion for guiding the needle body, and the tip portion of the needle body is provided along the guide portion of the needle guide. Since it is configured so that it can be manually operated or automatically infested, the needle can be easily pierced in a direction parallel to or downward from the bottom surface of the container 4b filled with the liquid, and the container from which the liquid is used up The needle can be easily pulled out.

  The guide portion of the needle guide is preferably straight.

  In this case, since the guide part of the needle guide is straight, the needle body can be reliably pierced by pushing the tip of the needle body into the container.

  Alternatively, the guide portion of the needle guide is preferably spiral.

  In this case, since the guide part of the needle guide is spiral, the needle body can be reliably pierced by screwing the tip of the needle body into the container.

  Further, it is preferable to provide a step portion which is asymmetric in the direction perpendicular to the axis at the tip of the needle body.

  In this case, since the step portion which is asymmetric in the direction perpendicular to the axis is provided at the distal end portion of the needle body, the distal end portion of the needle body can be further pierced into the container.

  Moreover, it is preferable that a spiral rib is attached to at least the tip of the needle body.

  In this case, since the spiral rib is attached to at least the distal end portion of the needle body, the distal end portion of the needle body can be more reliably pierced into the container.

  And a blocking mechanism that prevents the tip of the needle main body from being moved up and down manually or automatically along the guide portion of the needle guide. It is preferable that the blocking mechanism is released on manual operation.

  In this case, it is provided with a blocking mechanism for preventing the tip portion of the needle body from appearing and retracting manually or automatically along the guide portion of the needle guide. Since the condition is that the blocking mechanism has been released by manual operation, there is no possibility that the tip of the needle body will appear and disappear without permission.

Further, a supporting portion supporting the first container, prior Symbol support portion, a portion sticking the needle of the supported first container so as to be constrained, is projected to a side facing to the site It is preferable to form them.

In this case, a support portion supporting the first container, prior Symbol supporting portion, a portion sticking the needle of the supported first container so as to be constrained, projects a side opposed to the site Since the first container filled with drinking water is supported in a substantially standing posture by the support portion, the first container is deformed by its own weight and at least comes into close contact with the protruding portion. In this way, by piercing the needle into the first container supported by the support portion, it is possible to surely open a hole at that site.

  Further, it is preferable that a convex portion is formed near the top portion in the second container, and that the upper end of the communication pipe is opened in the convex portion.

  In this case, since the convex portion is formed near the top in the second container and the upper end of the communication pipe is opened in the convex portion, the air in the second container is collected in the convex portion and communicated. It becomes easy to be discharged from the pipe.

  Moreover, it is preferable to comprise so that the liquid from said 1st container may be supplied in the said convex part.

  In this case, since the liquid from the first container is supplied into the convex portion, the nozzle arrangement near the top of the second container is facilitated.

  Moreover, it is preferable to provide a notch in the site | part which removed the liquid supply side of the upper end of the said communicating pipe.

  In this case, since the notched portion is provided at a portion of the upper end of the communication pipe where the liquid supply side is removed, the supply of the liquid from the first container to the convex portion is not hindered, and the first through the communication pipe. It becomes easier to discharge air from the second container into the third container.

  By the way, even after the initial air is discharged, it is conceivable that air enters the container for some reason. In this regard, in Patent Document 4, in FIG. 28, when the liquid level in the cold water tank 5a becomes somewhat high, the drinking water W moves in the main pipe portion 51c of the discharge pipe 51a, and the drinking water W in the main pipe portion 51c. Although the phenomenon that the air A intervening in the upper part of the cold water tank 5a is drawn to the main pipe part 51c side through the guide pipe part 53a occurs due to the flow of the drinking water W is eventually drawn from the guide pipe part 53a to the main pipe part 51c side. A phenomenon will also occur. Then, the relatively cold drinking water W near the bottom of the cold water tank 5a is heated while the relatively warm air A and the drinking water W thereabove are sucked by the guide pipe portion 53a in the cold water tank 5a. As a result, the cooling efficiency is lowered, which is against the demand for energy saving.

  Therefore, it is preferable to provide a drain pipe for discharging the liquid in the second container from the vicinity of the bottom of the second container.

  In this case, since the drainage pipe for discharging the liquid in the second container from the vicinity of the bottom of the second container is provided at the lower end, particularly when the second container is a cold water tank, Since the cold drinking water can be discharged out of the cold water tank without being mixed with the relatively warm drinking water near the top, the cooling efficiency can be improved.

  Alternatively, a drain pipe for discharging the liquid in the second container from the vicinity of the bottom of the second container, and an exhaust pipe for discharging the air in the second container from the vicinity of the top of the second container through the throttle portion. It is preferable to provide a connecting portion for connecting the exhaust pipe to the drain pipe.

  In this case, a drain pipe for discharging the liquid in the second container from the vicinity of the bottom of the second container, and an exhaust for discharging the air in the second container from the vicinity of the top of the second container through the throttle portion. And a connecting portion for connecting the exhaust pipe to the drainage pipe is provided, which makes it difficult to suck the liquid near the top of the second container from the exhaust pipe. Therefore, especially when the second container is a cold water tank, the relatively cool drinking water near the bottom can be discharged outside the cold water tank without mixing with the relatively warm drinking water near the top, thus improving the cooling efficiency. Can be achieved.

  Moreover, it is preferable that the said throttle part is an orifice.

  In this case, since the throttle portion is an orifice, it has a simple configuration and is advantageous in terms of cost.

  Here, if the orifice is provided in such a posture that the axial center of the hole is in the horizontal direction, a part of the air that has passed first stays around the hole of the orifice, and then the liquid passes through the hole of the orifice. This may cause a phenomenon in which the resistance loss of the orifice becomes unstable. Therefore, it is preferable to provide the orifice in such a posture that the axial center of the hole is in the vertical direction.

  In this case, since the orifice is provided in such a posture that the axial center of the hole is in the vertical direction, a part of the air that has passed previously does not stay around the orifice hole, and the liquid is then supplied to the orifice hole. Will not interfere with the passage. Therefore, it is possible to reliably prevent the occurrence of a phenomenon that makes the resistance loss of the orifice unstable.

  Moreover, it is preferable that the said connection part exists in a position lower than the bottom part of said 2nd container.

  In this case, since the connection portion is located at a position lower than the bottom portion of the second container, even when the liquid level in the second container is low, it is somewhat between the liquid surface and the connection portion. The head difference can be taken.

  Therefore, the liquid moves in the drainage pipe, and the flow of the liquid in the drainage pipe tends to cause a phenomenon that the air intervening in the upper part of the second container is drawn to the connection part of the drainage pipe through the exhaust pipe. The air accumulated in the second container is easily exhausted to the outside. Thereby, for example, when the water server is used, it is possible to significantly reduce the time until the inside of the second container becomes airless again.

  Further, when the liquid level in the second container becomes high to some extent, the liquid moves in the drainage pipe, and the air flowing in the upper part of the second container is caused to flow through the drainage pipe by the flow of the liquid in the drainage pipe. Although the phenomenon of being drawn to the connection portion side of the liquid occurs, the phenomenon that the liquid is drawn from the exhaust pipe to the connection portion side of the drainage pipe eventually occurs.

  Even in this case, since the exhaust pipe does not pass through the second container, particularly when the second container is a cold water tank, the relatively cold drinking water near the bottom of the cold water tank is moved to the relatively warm air above it. It does not warm while drinking water is drawn through the exhaust pipe. As a result, the cooling efficiency is not lowered, and the demand for energy saving is met.

  Moreover, it is preferable that the said connection part is comprised by the venturi pipe.

  In this case, since the connecting portion is constituted by a Venturi tube, when the liquid is discharged, more air is sucked so that the second container can be quickly brought into an airless state.

  Further, in Patent Documents 3 and 4, when the airless structure of the container is adopted, the water bottle or the cold water tank is slightly decompressed in order to extract air from the water bottle or the cold water tank. Also, the pressure is slightly reduced. In the hot water tank under this reduced pressure, hot water heated to about 80 to 90 ° C. boiled, and there was a possibility that the boiled hot water would flow backward through the water supply pipe and enter the water bottle or the cold water tank. As a result, the cooling efficiency particularly in the cold water tank is lowered, and in this case, there is a problem that it is against the demand for energy saving. Therefore, it is preferable that the communication pipe is provided with a fluid element that increases the line resistance when the liquid flows backward than when it is supplied.

  In this case, since the fluid element is provided in the communication pipe so that the line resistance is larger than when the liquid is supplied when the liquid flows backward, the liquid from the first container or the second container is easily supplied to the third container, Therefore, as in Patent Documents 3 and 4, the heating efficiency and the cooling efficiency in the second container are not reduced, and the demand for energy saving is met.

  Further, unlike the case where a backflow prevention valve is provided in the supply line, the backflow prevention valve becomes a resistance and does not hinder the flow of the liquid, and the maintenance thereof becomes unnecessary. Further, as in the case where a coil part, a U-seal part, etc. are provided in the supply line, the coil part, the U-seal part, etc. become resistance and do not hinder the flow of liquid, and air stays there. Nothing will happen. Therefore, even when the airless structure is adopted, it is possible to always stably supply liquid by suppressing the backflow of the liquid from the third container to the first container or the second container.

  The fluid element includes a cylindrical main body, a first nozzle connected in a tangential direction on a peripheral surface of the main body, and a second nozzle connected in a central axis direction on one end surface of the main body. A vortex diode is preferred.

  In this case, the fluid element includes a cylindrical main body, a first nozzle connected in a tangential direction on a peripheral surface of the main body, and a second nozzle connected in a central axis direction on one end surface of the main body. Since this is a vortex diode, the line resistance is increased when liquid is flowing backward than when it is supplied. Thereby, even when an airless structure is employed, the liquid backflow from the third container to the first container or the second container can be reliably suppressed, and more stable liquid supply can be performed.

  Here, depending on the arrangement posture of the vortex diode, a part of the air that has passed first remains in the main body, and then the liquid flows in from the second nozzle and then passes through the main body, A phenomenon may occur in which the flow of liquid in the vortex diode becomes unstable. Therefore, it is preferable that at least one end surface of the main body of the vortex diode and the first nozzle are laterally arranged and the second nozzle is directed upward.

  In this case, since at least one end surface of the main body of the vortex diode and the first nozzle are disposed sideways and the second nozzle is directed upward, a part of the air that has passed previously remains in the main body. It becomes difficult to prevent the liquid from subsequently flowing into the second nozzle and passing through the main body. As a result, it is possible to reliably prevent the occurrence of a phenomenon that makes the liquid flow in the vortex diode unstable.

  The vortex diode preferably includes a guide fin configured to guide the liquid to the first nozzle side during the supply and not to guide the liquid to the second nozzle side during the back flow.

  In this case, the vortex diode includes a guide fin configured to guide the liquid to the first nozzle side during the supply, but not to guide the liquid to the second nozzle side during the backflow. The liquid backflow to the first container or the second container can be more reliably suppressed, and more stable liquid supply can be performed.

  Moreover, it is preferable that the said guide fin is curving along the flow direction of the liquid assumed at the time of the said supply.

  In this case, since the guide fin is curved so as to follow the flow direction of the liquid assumed at the time of the supply, the backflow of the liquid from the third container to the first container or the second container is more reliably suppressed. Thus, more stable liquid supply can be performed.

  2nd invention is equipped with the air bleeding structure of the container of any one of Claims 1-24, said 1st container is a stretchable bag body, and said 2nd container cools the drinking water as a liquid The water server is characterized in that the cold water tank and the third container are warm water tanks for warming drinking water as a liquid.

  According to the second invention, the container is provided with the air vent structure according to any one of claims 1 to 24, the first container is an elastic bag, and the second container is a drinking water as a liquid. Since the cold water tank for cooling the water and the third container are the hot water tank for warming the drinking water as the liquid, the effects as in the first invention are achieved.

  According to the first invention, in the state where the vicinity of the top in the second container and the inside of the third container communicate with each other in a descending manner, the first container is set in a predetermined position. When the liquid is supplied through the needle, the air or liquid discharged from the second container into the third container through the communication pipe is passed through the top of the third container. And a discharge pipe that discharges from the vicinity. When the liquid is supplied from the first container to the second container, the air in the second container is compressed, and the compressed air passes through the communication pipe. Air is discharged into the third container, and the air discharged into the third container is discharged from the third container to the outside through the discharge pipe, so that the liquid is filled in the second container. The liquid filled in the second container is transferred to the third container through the communication pipe. Liquid is filled into the third container by being discharged. As a result, particularly when the initial air is discharged, the time until the second container and the third container become airless can be greatly reduced.

  According to the water server of the second invention, the container has the air vent structure according to any one of claims 1 to 24, wherein the first container is a stretchable bag, and the second container is a liquid. Since the cold water tank which cools the drinking water as and the third container is the warm water tank which warms the drinking water as the liquid, the effects as in the first invention are achieved.

It is a sectional side view which shows typically the whole structure of the water server which concerns on Embodiment 1-5 of this invention. It is a cross-sectional view of the bottle holder of the water server according to the first to fifth embodiments. It is a main-body part enlarged view (side view) of the needle which concerns on this Embodiment 1. FIG. It is a main-body part enlarged view (front view) of the needle concerning this Embodiment 1. It is a guide part enlarged view (plan view) of a needle concerning this Embodiment 1. It is a guide part enlarged view (AA arrow sectional view of Drawing 3A) of a needle concerning this Embodiment 1. It is explanatory drawing (step S1) which shows the usage example of the needle which concerns on this Embodiment 1. FIG. It is explanatory drawing (step S2) which shows the usage example of the needle which concerns on this Embodiment 1. FIG. It is explanatory drawing (step S3) which shows the usage example of the needle which concerns on this Embodiment 1. FIG. It is a main-body part enlarged view (side view) of the needle which concerns on this Embodiment 2. FIG. It is a main-body part enlarged view (plan view) of the needle concerning Embodiment 2. FIG. 6 is an enlarged view of a guide portion of a needle according to Embodiment 2 (having a 360 ° spiral groove). FIG. 6 is an enlarged view of a guide portion of a needle according to Embodiment 2 (having a 180 ° spiral groove). FIG. 6 is an enlarged view of a guide part of a needle according to Embodiment 2 (a part having a spiral groove). It is explanatory drawing (step S11) which shows the usage example of the needle which concerns on this Embodiment 2. FIG. It is explanatory drawing (step S12) which shows the usage example of the needle which concerns on this Embodiment 2. FIG. It is explanatory drawing (step S13) which shows the usage example of the needle which concerns on this Embodiment 2. FIG. It is explanatory drawing of the liquid extraction mechanism from the container of a prior art example. It is explanatory drawing of the liquid extraction mechanism from the container of this invention. It is explanatory drawing (step S21) which shows the usage example of the needle which concerns on this Embodiment 3. FIG. It is explanatory drawing (step S22) which shows the usage example of the needle which concerns on this Embodiment 3. FIG. It is explanatory drawing (step S23) which shows the usage example of the needle which concerns on this Embodiment 3. FIG. It is a conceptual diagram of the air bleeding structure of the cold water tank and hot water tank which concerns on this Embodiment 4. It is a perspective view around the convex part of the cold water tank which concerns on this Embodiment 4. FIG. It is a conceptual diagram of the air bleeding structure of the cold water tank and hot water tank which concerns on this Embodiment 5. It is a perspective view around the convex part of the cold water tank which concerns on this Embodiment 5. FIG. It is a sectional side view which shows typically the whole structure of the water server which concerns on Embodiment 6, 7 of this invention. It is a conceptual diagram of the air bleeding structure of the cold water tank and hot water tank which concerns on this Embodiment 6. It is a perspective view of the convex part concerning this Embodiment 6. FIG. It is a perspective view of a venturi tube concerning this Embodiment 6. It is a perspective view of the orifice which concerns on this Embodiment 6. It is a conceptual diagram of the air bleeding structure of the cold water tank which concerns on the modification 1 of this Embodiment 6. It is a conceptual diagram of the air bleeding structure of the cold water tank and hot water tank which concerns on this Embodiment 7. It is a perspective view of a vortex diode according to the seventh embodiment. It is explanatory drawing (side view) which shows the liquid supply operation | movement of the vortex diode which concerns on this Embodiment 7. It is explanatory drawing (plan view) which shows the liquid supply operation | movement of the vortex diode which concerns on this Embodiment 7. It is explanatory drawing (side view) which shows the backflow operation | movement of the vortex diode which concerns on this Embodiment 7. It is explanatory drawing (plan view) which shows the backflow operation | movement of the vortex diode which concerns on this Embodiment 7. It is a perspective view of the vortex diode which concerns on the modification 2 of this Embodiment 7. It is explanatory drawing (side view) which shows the liquid supply operation | movement of the vortex diode which concerns on the modification 2 of this Embodiment 7. It is explanatory drawing (plan view) which shows the liquid supply operation | movement of the vortex diode which concerns on the modification 2 of this Embodiment 7. It is explanatory drawing (side view) which shows the backflow operation | movement of the vortex diode which concerns on the modification 2 of this Embodiment 7. It is explanatory drawing (plan view) which shows the backflow operation | movement of the vortex diode which concerns on the modification 2 of this Embodiment 7. It is a conceptual diagram of the line heater which concerns on the modification 3 of this Embodiment 7. It is a conceptual diagram of the air vent structure of the cold water tank in a prior art example.

(Embodiment 1)
FIG. 1A is a side sectional view schematically showing the overall configuration of the water server 1 according to Embodiments 1 to 3 of the present invention, and FIG. 1B is a transverse sectional view of the bottle holder 2. In FIG. 1A, the left side shows the front, the right side shows the back, the lower side in FIG. 1B shows the front, and the upper side shows the back. Further, as a material for the water server 1, synthetic resin, rubber, metal, and the like are mainly used in place.

  As shown in FIG. 1A, the water server 1 includes a bottle holder 2 and a main body 3. The bottle holder 2 sets a bag body (corresponding to a first container) 4 containing drinking water as a liquid inside, or on the main body 3 in order to take out the set bag body 4 to the outside. It is attached so that it can be opened and closed (reference numeral 2 in FIG. 1A indicates a closed state, and reference numeral 2 ′ indicates an open state). Further, inside the main body 3, a cold water tank 5 (corresponding to a second container) for cooling drinking water and a hot water tank (corresponding to a third container) 6 for warming drinking water are arranged vertically. ing.

  The bag body 4 is made of a material having a high elasticity such as a nylon film having a multilayer structure, and can be deformed by shrinking as the drinking water filled therein decreases. And in the initial state filled with drinking water, it is roundish as a whole and has a slightly flat hexahedral shape. Here, the bag body 4 is supported by the support portion 7 in a substantially standing posture. The shape of the bag body 4 in the initial state may be another shape such as a square or a cylindrical shape.

  The support portion 7 is provided with a relatively large radius from the back to the front so as not to obstruct the reduction deformation of the bag body 4 as much as possible, and is provided with a relatively small radius at the front. The bag 4 can be set so as to be reduced and deformed without excessive twisting when the drinking water filled in the bag 4 is taken out between the two rounds. Although not shown in the figure, appropriate rounds are provided on both the left and right sides of the support portion 7 to achieve the same effect. Further, as shown in FIG. 1B, a bulging portion 71 is formed by projecting the vicinity of the center in the left-right direction of the support portion 7 to the back side with an appropriate radius. Accordingly, when the bag body 4 filled with drinking water is supported in a substantially standing posture by the support portion 7, the bag body 4 is deformed by its own weight, and the bulging portion of the support portion 7 is near the bottom surface 41 of the front surface. A state of being in close contact with 71 is obtained.

  Thus, the bag body 4 supported by the support portion 7 can reliably open the hole 42 in the vicinity of the bottom surface 41 on the front side by piercing the needle 8 substantially parallel to the bottom surface 41. it can. The needle 8 includes a needle guide 82 attached to the support 7 on the front side, and a needle body 81 that is guided by the needle guide 82 and pierces the bag body 4. The needle 8 is preferably pierced as close as possible to the bottom surface 41 of the bag body 4, but the needle 8 may be pierced into a portion away from the bottom surface 41 of the bag body 4 depending on the shape or the like of the bag body 4. In that case, the needle 8 may be pierced in a direction that is lowered or raised. Further, in an extreme case, the needle 8 may be pierced downward from the upper portion of the bag body 4.

  And the drinking water taken out from the bag body 4 is made into cold water through the flexible hose 9 made of, for example, silicon rubber connected to the needle body 81 of the needle 8 and the line 10 further connected to the hose 9. The tank 5 and the hot water tank 6 are respectively supplied.

  The cold water tank 5 is provided with a cooling means 50 such as a refrigerator for cooling the drinking water, and the drinking water supplied from the bag body 4 is cooled by the cooling means 50, whereby the cold water tank 5. The temperature is maintained at about 4 to 10 ° C. Further, the inside of the cold water tank 5 is brought into an airless state by a communication pipe 102 and the like which will be described later.

  The warm water tank 6 is provided with a heating means 60 such as a band heater or a sheathed heater for heating the drinking water, and the drinking water supplied from the bag body 4 is heated by the heating means 60. The hot water tank 6 is maintained at a temperature of about 80 to 90 ° C. The hot water tank 6 is also brought into an airless state by a discharge pipe 63 and the like which will be described later.

  Further, the drinking water cooled in the cold water tank 5 and the drinking water warmed in the hot water tank 6 are opened and closed at their respective water supply ports (water faucets) 11 and 12 by a predetermined amount in a cup or the like (not shown). It is supposed to be poured.

  2A is an enlarged view (side view) of the main body of the needle 8 according to the first embodiment, and FIG. 2B is a front view thereof. 3A is an enlarged view (plan view) of a guide portion of the needle 8 according to the first embodiment, and FIG. 3B is a cross-sectional view taken along the line AA.

  As shown in FIGS. 2A and 2B, the needle body 81 of the needle 8 is further fixed to the spire-shaped tip portion 811, a substantially cylindrical intermediate portion 812 fixed to the tip portion 811, and the intermediate portion 812. It consists of a base 813. As a material of at least a portion of the tip 811 of the needle body 81 that contacts the bag body 4, a hole made in the bag body 4 by using a synthetic resin having good adhesion to the bag body 4 is used. Can reduce the leakage of drinking water as much as possible. As a result, there is no need to provide extra attachment means such as a ring or a flange around the hole 42 of the bag body 4.

  Substantially trapezoidal openings 814 and 814 are respectively formed on the front side and the back side of the side surface of the tip portion 811. The openings 814 and 814 communicate with a passage 816 formed around the axis of the intermediate portion 812 by a passage 815 formed around the axis of the tip portion 811.

  The intermediate portion 812 is formed so that the passage 816 is bent downward in the vicinity of the center in the axial direction, and the connecting portion 817 of the hose 9 is provided at the lower end of the bent passage 816. Further, a stopper 818 that restricts the movement range protrudes above the intermediate portion 812. Note that the left and right side surfaces of the intermediate portion 812 may be provided with a steady rest that does not cause a rotation operation during the movement.

  The base portion 813 is enlarged in diameter to form a door knob shape so that when the needle 8 is pierced, the pushing operation becomes easy. When the needle 8 is pulled back to the original state, the pulling operation is performed by pulling the upper portion of the stopper 818. Note that a lever (not shown) may be provided on the upper portion of the stopper 818 to serve as the base 813 and the stopper 818. Further, a button (not shown) may be provided near the base 813 or the lever, and the needle body 81 may be prevented from moving without permission by operating this button when operating the base 813 or the lever (blocking mechanism). Equivalent to Here, when the needle main body 81 is moved manually as in the first embodiment, it is originally unthinkable that the needle main body 81 moves arbitrarily. In addition, it is intended to ensure safety in the event of an emergency. A specific configuration of such a blocking mechanism will be described later in a third embodiment.

  As shown in FIGS. 3A and 3B, the needle guide 82 of the needle 8 is a cylindrical portion (corresponding to a straight guide portion) 821 attached so as to protrude forward on the support portion 7, and this cylinder. A flat portion 822 that is further above the portion 821 and extends forward in parallel therewith is integrally formed.

  The cylindrical portion 821 has a through groove 823 formed in the lower portion thereof for preventing interference with the hose connecting portion 817, and a through groove 824 formed in the upper portion thereof for preventing interference with the stopper 818. It has. The flat portion 822 includes a through groove 825 that is directly above the through groove 824 and restricts the movement range of the stopper 818. Therefore, the tip of the through groove 825 is cut so as to be closer to the support portion 7 than the tips of the other through grooves 823 and 8234.

  Then, as shown in FIG. 4A described later, the tip 811 of the needle body 81 is slightly inserted into the cylindrical portion 821 of the needle guide 82. At this time, the hose connecting portion 817 is in front of the cylindrical portion 821, but the stopper 818 is fitted in the through groove 824 of the cylindrical portion 821 and the through groove 825 of the flat portion 822 so as to be able to advance and retract.

  Further, in this state, by pressing the base portion 813 of the needle body 81, the hose connection portion 817 enters the through groove 823 of the cylindrical portion 821, and the stopper 818 includes the through groove 824 of the cylindrical portion 821 and the flat portion 822. In each of the through-grooves 825, the process proceeds toward the bag body 4, and the progress is stopped by interfering with the through-groove 825.

  Thereby, when the needle 8 is pierced into the bag body 4, the pushing operation can be reliably performed. When the needle 8 is pulled back to the original state, the pulling operation is performed by pulling the upper portion of the stopper 818.

  4A to 4C are explanatory views (steps S1 to S3) showing examples of use of the needle 8 according to the first embodiment, respectively. In addition, before entering step S1, the bottle holder 2 of the water server 1 is opened, and the bag body 4 is supported in a substantially standing posture on the support portion 7 in a state like the bottle holder 2 ′. Assume that the bag body 4 is set at a predetermined position.

  In step S1, as shown in FIG. 4A, the needle body 81 of the needle 8 is set on the needle guide 82 attached to the support portion 7. At this time, the tip 811 of the needle body 81 is slightly inserted into the cylindrical portion 821 of the needle guide 82 so that the hose connecting portion 817 is in front of the cylindrical portion 821, but the stopper 818 penetrates the cylindrical portion 821. The groove 824 and the through groove 825 of the flat portion 822 are slidably fitted. And the front-end | tip part 811 of the needle main body 81 and the bag body 4 of the state supported by the support part 7 are not contacting at all.

  In step S2, as shown in FIG. 4B, the user manually operates the base 813 of the needle body 81 so as to push it in the X direction in FIG. 4B. Then, the intermediate portion 812 and the tip portion 811 of the needle body 81 are integrated and slide in the cylindrical portion 821 of the needle guide 82, and the bag is supported by the tip portion 811 and the support portion 7. The body 4 comes into contact. At this time, the hose connecting portion 817 is in the through groove 823 of the cylindrical portion 821, and the stopper 818 is in the through groove 824 of the cylindrical portion 821 and the through groove 825 of the flat portion 822.

  In step S3, as shown in FIG. 4C, the tip 811 of the needle body 81 breaks through the front lower side of the bag body 4 to reach the inside thereof, and the stopper 818 of the needle body 81 is the through groove of the flat portion 822. When interfering with 825, the needle body 81 will not advance any further. Then, the tension acting in the direction in which the bag body 4 shrinks and the gravity of the drinking water itself filled in the bag body 4 act simultaneously, so that the drinking water in the bag body 4 becomes the tip of the needle body 81. It flows out from the openings 814 and 814 of the portion 811. The beverage liquid that has flowed out is discharged into the hose 9 through the passage 815 of the tip 811, the passage 816 of the intermediate portion 812, and the hose connection portion 817 in this order. After that, the bottle holder 2 ′ of the water server 1 is closed so that the bottle holder 2 is in the state.

  The drinking water discharged to the hose 9 is further supplied to the cold water tank 5 and the hot water tank 6 through the line 10. The drinking water cooled in the cold water tank 5 and the drinking water heated in the hot water tank 6 are poured into a cup or the like (not shown) by a predetermined amount by opening and closing the respective water supply ports 11 and 12.

  When the drinking water in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with drinking water. At this time, the bottle holder 2 of the water server 1 is opened again, The needle 8 is pulled back to the original state in the state of the bottle holder 2 '. That is, the upper part of the stopper 818 is pulled, and the pull back operation in the Y direction in FIG. 4C is performed. Thereby, the needle 8 is pulled out from the bag body 4 in the reverse procedure as in each of steps S1 to S3. And after setting another bag 4 in a predetermined position, water supply can be performed now by repeating said each step S1-S3 again in order.

  As described above, according to the water server 1 using the needle 8 of the first embodiment, the needle guide 82 having the cylindrical portion 821 as the guide portion formed to face the bag body 4, and the spire-like shape By projecting the distal end portion 811 from the needle guide 82 along the cylindrical portion 821 of the needle guide 82, the distal end portion 811 near the bottom surface 41 of the bag body 4 has the distal end portion 811. Since the hole 42 is formed so as to be parallel or downward with the bottom surface 41, the hole 42 can be easily opened near the bottom surface 41 of the bag 4 filled with drinking water (the solid line portion in FIG. 8B). See).

  Thereby, even if the drinking water in the bag body 4 has decreased, the tip of the needle 8 does not get in the way, and most of the drinking water in the bag body 4 can be taken out. Further, when the needle 8 is removed from the used bag body 4 in order to replace the used bag body 4 with a new one, the residual liquid 40b ′ is hardly leaked from the hole 42 opened in the bag body 4. (Refer to the chain double-dashed line portion in FIG. 8B).

  In addition, by opening the hole 42 in the bag body 4 with the needle 8, the drinking water that has entered the bag body 4 through the needle 8 is surely transferred to the cold water tank 5 and the hot water tank 6 in the bag body 4. Can be sent to.

  Thereby, not only the drinking water contained in the bag body 4 but also the drinking water stored in the cold water tank 5 and the hot water tank 6 to which it is sent may be included in the mixed air. Can suppress the propagation of various germs as much as possible.

(Embodiment 2)
By the way, in Embodiment 1 described above, the needle 8 is pierced straight into the bag body 4 by manual operation. However, the needle may be screwed into the bag body 4 automatically and spirally. Such a configuration will be described in detail below as a second embodiment. The basic structure of the water server 1 itself is substantially the same as that of the first embodiment shown in FIGS. 1A and 1B. The structure of the needle 8 ′ will be mainly described in detail, and the description of the other elements common to the first embodiment will be omitted.

  5A is an enlarged view (side view) of the main body of the needle 8 'according to the second embodiment, and FIG. 5B is a plan view thereof. 6A is an enlarged view of a guide portion of a needle according to the second embodiment (having a 360 ° spiral groove), FIG. 6B is having a 180 ° spiral groove, and FIG. 6C is a spiral groove in a part thereof. Each of these is shown.

  As shown in FIGS. 5A and 5B, the needle body 83 of the needle 8 ′ has a tapered tip portion 831, a substantially cylindrical intermediate portion 832 connected to the tip portion 831, and a diameter larger than that of the intermediate portion 832. And a base portion 833 connected to each other. As the material of the tip 831 and the intermediate part 832 of the needle body 83, leakage of drinking water from the hole 42 opened in the bag 4 by using a synthetic resin having good adhesion to the bag 4. Is expected to be as low as possible.

  Substantially trapezoidal openings 834 and 834 are respectively formed on the front side and the back side of the side surface of the distal end portion 831. The openings 834 and 834 communicate with passages 835 formed in the tip portion 831, the intermediate portion 832, and the base portion 833.

  The tip portion 831 is formed with a step portion 835 a that is asymmetric in the direction perpendicular to the axis at the most distal end portion, thereby making it easier to open the hole 42 in the bag body 4. Here, a spiral rib 836 of about half rotation is formed, which makes it easier to open the hole 42 in the bag body 4. Unlike the first embodiment, the intermediate portion 832 is only formed with a straight passage 835.

  A pin hole 837 in the direction perpendicular to the axis is formed in the base 833, and a pin 87 is inserted into the pin hole 837 as shown in FIG. The pin 87 is brought into contact with one end side of the spring 89 through a disc-shaped spacer 88 and the other end of the spring 89 is screwed and fixed at an appropriate position of the support portion 7 in advance. I am trying to keep up. Note that a hose connection portion 837 a for connecting the hose 9 is formed at the rearmost portion of the base portion 833.

  The base 833 is locked to a locking member (not shown) so that the needle main body 83 does not move freely, and the locking state of the base 833 to the locking member is changed to, for example, the bottle holder 2. The needle body 83 is guided by the needle guide 84 and automatically moves toward the bag body 4 by the return force of the spring 89 by releasing it by operating an external button or the like (in the blocking mechanism). Equivalent to).

  Thereby, when the needle 8 ′ is pierced into the bag body 4, the pushing operation can be performed with one touch. When the needle 8 'is pulled back to the original state, a handle or the like (not shown) is provided to perform the pulling back operation.

  Here, as shown in FIG. 6A, the needle guide 84 of the needle 8 ′ is rotated 360 ° around the cylindrical portion 841 attached so as to protrude forward on the support portion 7 and the peripheral surface 842 of the cylindrical portion 841. And a spiral groove 843 (corresponding to a spiral guide portion) formed in such a manner. In this case, when the pin 87 protruded from the base portion 833 of the needle body 83 is guided by the spiral groove 843 of the needle guide 84, the tip portion 831 is screwed into the bag body 4 while rotating by 360 °. Become.

  Alternatively, as shown in FIG. 6B, the needle guide 85 of the needle 8 'rotates a cylindrical portion 851 attached so as to protrude forward on the support portion 7 and a peripheral surface 852 of the cylindrical portion 851 by 180 °. And a spiral groove 853 (corresponding to a spiral guide) formed as described above. In this case, when the pin 87 protruded from the base 833 of the needle body 83 is guided by the spiral groove 853 of the needle guide 85, the tip 831 is screwed into the bag body 4 while rotating by 180 °. Become.

  Alternatively, as shown in FIG. 6C, the needle guide 86 of the needle 8 ′ is spirally formed by a cylindrical portion 861 attached so as to protrude forward on the support portion 7 and a part of the peripheral surface 862 of the cylindrical portion 861. And a spiral groove (corresponding to a spiral guide portion) 863 having the remaining portion cut into a straight shape. In this case, when the pin 87 protruding from the base portion 833 of the needle body 83 is guided by the spiral groove 863 of the needle guide 86, the tip end portion 831 is rotated only at the beginning and screwed into the bag body 4, and thereafter Move straight.

  According to the experimental results according to the present invention, the so-called torsional action required when the tip 831 of the needle body 83 is pierced into the bag body 4 in any of the cases of FIGS. 6A, 6B, and 6C. Was found to be obtained. Accordingly, here, the needle 8 ′ uses a combination of the needle body 83 and the needle guide 84, but other combinations may be used.

  7A to 7C are explanatory views (steps S11 to S13) showing examples of use of the needle 8 'according to the second embodiment, respectively. Again, before entering the step S11, by opening the bottle holder 2 of the water server 1 and supporting the bag body 4 on the support portion 7 in a substantially standing posture in a state like the bottle holder 2 ′, It is assumed that the bag body 4 is set at a predetermined position.

  First, in step S11, it is assumed that the needle body 83 of the needle 8 'is set on the needle guide 84 as shown in FIG. 7A. At this time, the pin 87 inserted into the pin holes 837 and 837 of the base portion 833 of the needle body 83 is brought into contact with one end side of the spring 89 via the spacer 88 and the other end of the spring 89 is appropriately connected to the support portion 7. Although it is elastically biased by screwing it in place, these setting operations are performed in advance by the manufacturer of the water server 1. At this time, since the base portion 833 is locked to a locking member (not shown), the needle body 83 is on the front side of the needle guide 84, and the distal end portion 831 and the bag body 4 are not in contact at all.

  In step S <b> 12, the bottle holder 2 ′ of the water server 1 is closed and the bottle holder 2 is in the state. Thereafter, as shown in FIG. 7B, the needle body 83 is automatically advanced in the X direction by the elastic biasing force of the spring 89 by releasing the locked state by, for example, a button operation. Then, the base portion 833, the intermediate portion 832, and the distal end portion 831 of the needle body 83 are integrated and guided to the spiral groove 843 of the cylindrical portion 841 of the needle guide 84, and slide while rotating in the R direction. The tip 831 eventually comes into contact with the bag body 4.

  In step S13, as shown in FIG. 7C, the needle body 83 slides while rotating in the R direction, breaks through the front lower side of the bag body 4, and reaches the inside thereof. Then, the drinking water in the bag body 4 flows out from the openings 834 and 834 of the distal end portion 831 of the needle body 83 by the simultaneous action of the tension that works to reduce the bag body 4 and the gravity applied to the drinking water. . The outflowed drinking water passes through the tip portion 831, the intermediate portion 832, the passage 835 of the base portion 833, and the hose connection portion 837 a in this order, and is discharged to the hose 9.

  The drinking water discharged to the hose 9 is further supplied to the cold water tank 5 and the hot water tank 6 through the line 10. The drinking water cooled in the cold water tank 5 and the drinking water heated in the hot water tank 6 are poured into a cup or the like (not shown) by a predetermined amount by opening and closing the respective water supply ports 11 and 12.

  When the drinking water in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with drinking water. At this time, the bottle holder 2 of the water server 1 is opened again, In the state of the bottle holder 2 ′, a needle body 83 of the needle 8 ′ is pulled out from the bag body 4 by operating a handle (not shown). And after setting another bag 4 in a predetermined position, water supply can be performed now by repeating said each step S11-S13 again.

  As described above, according to the water server 1 of the second embodiment, the tip 831 of the needle body 83 in the needle 8 ′ is projected from the needle guide 84 while being twisted, so that the tip 831 is attached to the bag body 4. Since the hole is opened and the drinking water contained in the bag body 4 is sent to the cold water tank 5 and the hot water tank 6 installed at the lower part of the bag body 4, in addition to the function and effect of the first embodiment, The hole 42 can be further easily opened in the bag body 4 filled with drinking water.

(Embodiment 3)
Further, in the first and second embodiments, the needle 8 is caused to appear and disappear from the bag body 4 manually or automatically. However, the needle 8 is provided with a blocking mechanism for preventing this, and when It is preferable that the blocking mechanism is released manually. Such a configuration will be described in detail below as a third embodiment. Here, a case will be described as an example in which a lever 818a serving as both the base 813 and the stopper 818 of the needle 8 according to the first embodiment is provided, and the needle 8 ″ is moved in and out by manually operating the lever 818a. Needless to say, the present invention can be similarly applied to the case where the base 813 of the needle 8 according to the first embodiment is manually operated or the needle 8 'according to the second embodiment is automatically retracted. Since the structure itself is substantially the same as that of the first embodiment shown in FIG. 1, the blocking mechanism in the structure of the needle 8 ″ will be mainly described in detail below, and other elements common to the first embodiment will be described below. I will omit the explanation.

  That is, as shown in FIGS. 9A to 9C to be described later, the needle 8 ″ includes a needle main body 81a and a needle guide 82a, and the needle main body 81a further includes steady rests 819a and 819b extending left and right. (The length of the steady rest 819a is set longer than that of the steady rest 819b.) The tip of the steady rest 819a is moved up and down by the pressing force of the button 826 or the return force by the compression spring 826a. The blocking mechanism is embodied by being freely detachable from the stepped portions 827a and 827b of the regulating plate 827.

  9A to 9C are explanatory diagrams (steps S21 to S23) illustrating an example of use of the needle 8 ″ according to the third embodiment, where the upper stage is a plan view and the lower stage is a P-P cross-sectional view thereof. In this case as well, before entering the step S21, the user opens the bottle holder 2 of the water server 1 and supports the bag body 4 in a substantially standing posture on the support portion 7 in a state like the bottle holder 2 ′. Thus, it is assumed that the bag body 4 is set at a predetermined position.

  First, in step S21, as shown in FIG. 9A, it is assumed that the user has set the needle main body 81a of the needle 8 ″ to the needle guide 82a. At this time, the steady rest 819a of the needle main body 81a is a restriction plate. The needle main body 81a is on the front side of the needle guide 82a, and the tip end portion thereof is not in contact with the bag body 4 at all.

  In step S <b> 22, the user closes the bottle holder 2 ′ of the water server 1 so that the bottle holder 2 is used. Thereafter, as shown in FIG. 9B, when the user presses the button 826 and pushes down the restricting plate 827 against the urging force of the compression spring 826a, the steady stop 819a of the needle body 81a becomes the restricting plate 827. The stepped portion 827a is removed. Accordingly, the user can hold the lever 818a and advance the needle body 81a forward. Then, the needle main body 81a is guided by the needle guide 82a and slides, and the tip end part comes into contact with the bag body 4 in the end.

  In step S23, as shown in FIG. 9C, the needle body 81a slides further forward. When the end of the stroke is slid, the compression spring 826a is extended, and the restricting plate 827 is pushed up by the urging force of the compression spring 826a. Stopped. At this time, the needle main body 81a penetrates the front lower side of the bag body 4 and reaches the inside thereof. Then, the drinking water in the bag body 4 is discharged to the hose 9 through the needle body 81a by the simultaneous action of the tension that works to shrink the bag body 4 and the gravity applied to the drinking water.

  The drinking water discharged to the hose 9 is further supplied to the cold water tank 5 and the hot water tank 6 through the line 10. The drinking water cooled in the cold water tank 5 and the drinking water heated in the hot water tank 6 are poured into a cup or the like (not shown) by a predetermined amount by opening and closing the respective water supply ports 11 and 12.

  When the drinking water in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with drinking water. At this time, the bottle holder 2 of the water server 1 is opened again, In the state of the bottle holder 2 ′, the lever 818a is pulled back while pressing the button 826, and the needle body 81a of the needle 8 ″ is pulled out from the bag body 4. Then, another bag is used. After the body 4 is set at a predetermined position, water can be supplied by repeating the steps S21 to S23 again.

  As described above, according to the water server 1 using the needle 8 ″ according to the third embodiment, the tip of the needle main body 81a is prevented from appearing and retracting manually along the guide portion of the needle guide 82a. When the prevention mechanism is provided and is caused to appear and disappear by the manual operation, it is a condition that the prevention mechanism is released by the manual operation.

  In addition, although the said Embodiment 1-3 demonstrated the water server 1 provided with both the cold water tank 5 and the hot water tank 6 which are supplied from the bag body 4, the water provided only with one of those tanks The same applies to servers.

  In the first and third embodiments, the needle 8 is pushed straight into the bag body 4 by manual operation. In the second embodiment, the needle 8 'is automatically screwed into the bag body 4. In the first and third embodiments, the needle 8 may be automatically pushed straight into the bag body 4, or in the second embodiment, the needle 8 ′ may be manually screwed into the bag body 4.

  In the first and third embodiments, the user presses the base 813 of the needle main body 81, but a manual operation may be performed via a link mechanism or the like. In this case, even a child, an elderly person, or a woman who does not have physical strength compared to an adult male can easily perform the operation. However, it is preferable to make the configuration as simple as possible from the viewpoint of low cost.

  In the second embodiment, the needle body 83 is automatically pressed using the elastic biasing force of the spring 89. However, the pressing operation may be performed by an electric motor or the like. In this case, it is preferable that the configuration be as simple and reliable as possible from the viewpoint of energy saving and the like in addition to low cost.

  In the second embodiment, both the step portion 835a and the spiral rib 836 are provided at the tip 831 of the needle body 83 of the needle 8 ′ so as to be screwed into the bag body 4 as much as possible. When the resistance from the bag body 4 is small, one of them may be provided, or in some cases, none of them may be provided as in the first embodiment.

(Embodiment 4)
FIG. 1A is a side sectional view schematically showing the overall configuration of the water server 1 according to the first to third embodiments of the present invention, and FIG. 1B is a transverse sectional view of the bottle holder 2. In FIG. 1A, the left side shows the front, the right side shows the back, the lower side in FIG. 1B shows the front, and the upper side shows the back. Further, as a material for the water server 1, synthetic resin, rubber, metal, and the like are mainly used in place.

  As shown in FIG. 1A, the water server 1 includes a bottle holder 2 and a main body 3. The bottle holder 2 sets a bag body (corresponding to a first container) 4 containing drinking water as a liquid inside, or on the main body 3 in order to take out the set bag body 4 to the outside. It is attached so that it can be opened and closed (reference numeral 2 in FIG. 1A indicates a closed state, and reference numeral 2 ′ indicates an open state). A cold water tank (corresponding to the second container) 5 for cooling the drinking water and a hot water tank (corresponding to the third container) 6 for warming the drinking water are arranged inside the main body 3 vertically. ing.

  The bag body 4 is made of a material having a high elasticity such as a nylon film having a multilayer structure, and can be deformed by shrinking as the drinking water filled therein decreases. And in the initial state filled with drinking water, it is roundish as a whole and has a slightly flat hexahedral shape. Here, the bag body 4 is supported by the support portion 7 in a substantially standing posture. The shape of the bag body 4 in the initial state may be another shape such as a square or a cylindrical shape.

  The support portion 7 is provided with a relatively large radius from the back to the front so as not to obstruct the reduction deformation of the bag body 4 as much as possible, and is provided with a relatively small radius at the front. The bag 4 can be set so as to be reduced and deformed without excessive twisting when the drinking water filled in the bag 4 is taken out between the two rounds. Although not shown in the figure, appropriate rounds are provided on both the left and right sides of the support portion 7 to achieve the same effect. Further, as shown in FIG. 1B, a bulging portion 71 is formed by projecting the vicinity of the center in the left-right direction of the support portion 7 to the back side with an appropriate radius. Accordingly, when the bag body 4 filled with drinking water is supported in a substantially standing posture by the support portion 7, the bag body 4 is deformed by its own weight, and the bulging portion of the support portion 7 is near the bottom surface 41 of the front surface. A state of being in close contact with 71 is obtained.

  Thus, the bag body 4 supported by the support portion 7 can reliably open the hole 42 in the vicinity of the bottom surface 41 on the front side by piercing the needle 8 substantially parallel to the bottom surface 41. it can. The needle 8 is attached to the support portion 7 on the front side. The needle 8 is preferably pierced as close as possible to the bottom surface 41 of the bag body 4, but the needle 8 may be pierced into a portion away from the bottom surface 41 of the bag body 4 depending on the shape or the like of the bag body 4. In that case, the needle 8 may be pierced in the direction of the downward or forward ascent. Further, in an extreme case, the needle 8 may be pierced downward from the upper portion of the bag body 4.

  And the drinking water taken out from the bag body 4 through the flexible hose 9 made of, for example, silicon rubber connected to the base portion of the needle 8 and the line 10 further connected to the hose 9 is supplied to the cold water tank 5. To be supplied. A part of the drinking water supplied to the cold water tank 5 is also supplied to the hot water tank 6 via the communication pipe 102.

  The cold water tank 5 is provided with a cooling means 50 such as a refrigerator for cooling the drinking water, and the drinking water supplied from the bag body 4 is cooled by the cooling means 50, whereby the cold water tank 5. The temperature is maintained at about 4 to 10 ° C.

  The warm water tank 6 is provided with a heating means 60 such as a band heater or a sheathed heater for heating the drinking water, and the drinking water supplied from the bag body 4 is heated by the heating means 60. The hot water tank 6 is maintained at a temperature of about 80 to 90 ° C.

  Further, the drinking water cooled in the cold water tank 5 and the drinking water warmed in the hot water tank 6 are poured into a cup or the like (not shown) by a predetermined amount by opening and closing the respective water supply ports 11 and 12. It has become.

  FIG. 10 is a conceptual diagram of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the fourth embodiment, and FIG. 11 is a perspective view around the convex portion 101.

  As shown in FIG. 10, a convex portion 101 is provided near the top of the cold water tank 5, and a communication pipe 102 that communicates the inside of the convex portion 101 with the inside of the hot water tank 6 is provided. Specifically, as shown in FIG. 11, the substantially cylindrical convex portion 101 is slightly protruded from the top of the cold water tank 5, and the upper end of the communication pipe 102 is inserted into the convex portion 101 and opened. It is a so-called double tubular structure. And by connecting the line 10 to the site | part spaced apart from this convex part 101, the drinking water W supplied from the line 10 is prevented from flowing out directly from the communicating pipe 102, and, thereby, the cold water tank 5 The air A inside can easily flow out into the hot water tank 6. Note that the communication pipe 102 is allowed to be bent slightly depending on the arrangement thereof, but it is needless to say that the communication pipe 102 is, for example, a tip-down so as not to cause air accumulation as much as possible.

  In addition, a drain pipe 51 is provided for discharging the drinking water W in the cold water tank 5 from the vicinity of the bottom of the cold water tank 5 downward, and the drinking water W in the hot water tank 6 is discharged from the vicinity of the top of the hot water tank. A discharge pipe 63 is provided.

  Hereinafter, the operation procedure (steps S31 to S33) of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the fourth embodiment will be described. Before entering the step S31, the bottle holder 2 of the water server 1 is opened and the bag body 4 is supported in a substantially standing posture on the support portion 7 in the state of the bottle holder 2 ′. Assume that the bag body 4 is set at a predetermined position.

  In step S31, the supply of the drinking water W from the bag body 4 into the cold water tank 5 is started. First, the needle 8 is set on the support portion 7. The user manually operates to push the needle 8 into the bag body 4. Then, the tip of the needle 8 breaks through the front lower side of the bag body 4 and reaches the inside thereof.

  Then, the tension acting in the direction in which the bag body 4 shrinks and the weight of the drinking water W itself filled in the bag body 4 act simultaneously, so that the drinking water W in the bag body 4 is removed from the needle 8. It is discharged into the hose 9. The drinking water W discharged to the hose 9 is further supplied to the cold water tank 5 through the line 10. After that, the bottle holder 2 ′ of the water server 1 is closed so that the bottle holder 2 is in the state. However, the bottle holder 2 does not necessarily need to be openable and closable, and may be simply placed on the main body 3, for example.

  By the way, in the initial state, the water supply port 11 of the cold water tank 5 and the water supply port 12 of the hot water tank 6 are both closed. Then, even if it is going to supply drinking water W from the bag body 4 into the cold water tank 5 and the hot water tank 6, since both the cold water tank 5 and the hot water tank 6 contain a large amount of air A, both tanks 5 , 6 is difficult to supply drinking water W. Therefore, in step S32, when only the water supply port 12 of the hot water tank 6 is opened, the air A in the cold water tank 5 is collected in the convex portion 101, and then flows out into the hot water tank 6 through the communication pipe 102. The The air A flowing out into the hot water tank 6 is discharged to the outside from the water supply port 12 through the discharge pipe 63. For this reason, the drinking water W comes to be supplied from the line 10 into the cold water tank 5.

  When the inside of the cold water tank 5 is filled with the drinking water W, the drinking water W flows out from the communication pipe 102 to the hot water tank 6 this time. Until the hot water tank 6 is filled with the drinking water W, the air A comes out from the water supply port 12, so that the water supply port 12 remains open until then. The used amount from the respective tanks 5 and 6 after the hot water tank 6 is filled with the drinking water W is supplied to the respective tanks 5 and 6 individually.

  Thus, when the drinking water W is supplied into the cold water tank 5, the initial air in the cold water tank 5 is discharged to the hot water tank 6 through the communication pipe 102 by the supplied drinking water W. The inside of the cold water tank 5 can be quickly brought into an airless state. After that, the water inlet 12 is closed.

  Thereafter, in step S33, the drinking water W cooled in the cold water tank 5 and the drinking water W warmed in the hot water tank 6 are opened and closed by opening and closing the water supply ports 11 and 12, respectively. Only a fixed amount is poured.

  When the drinking water W in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with the drinking water W. At this time, the bottle holder 2 of the water server 1 is opened again. Thus, the needle 8 is pulled out of the bag body 4 in the state of the bottle holder 2 ′. And after setting another bag 4 in a predetermined position, water supply can be performed now by repeating said each step S1-S3 again in order.

  As described above, according to the fourth embodiment, the drinking water W is supplied from the bag body 4 to the cold water tank 5 through the communication pipe 102 that communicates the vicinity of the top in the cold water tank 5 and the inside of the hot water tank 6 in a descending manner. Since it is provided with a discharge pipe 63 for discharging air A or drinking water W discharged from the cold water tank 5 into the hot water tank 6 through the communication pipe 102 from the vicinity of the top of the hot water tank 6 when supplied. When the drinking water W is supplied from the body 4 into the cold water tank 5, the air A in the cold water tank 5 is compressed, and the compressed air A is discharged into the hot water tank 6 through the communication pipe 102. The air A discharged into the hot water tank 6 is discharged from the hot water tank 6 to the outside through the discharge pipe 63. As a result, particularly in the initial state, the time until the inside of the cold water tank 5 and the hot water tank 6 is in an airless state can be greatly shortened.

In addition, according to the fourth embodiment, since the drain pipe 51 for discharging the drinking water W in the cold water tank 5 from the vicinity of the bottom of the cold water tank 5 is provided in the first downward direction, the comparison in the vicinity of the bottom of the cold water tank 5 is performed. Since the cold drinking water W can be discharged out of the cold water tank 5 without being mixed with the relatively warm drinking water W near the top, the cooling efficiency can be improved.
(Embodiment 5)

  FIG. 12 is a conceptual diagram of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the fifth embodiment, and FIG. 13 is a perspective view around the convex portion 101.

  In this Embodiment 5, as shown in FIG. 12, while providing the convex part 101 to which the drinking water W is supplied from the said bag body 4 near the top part of the cold water tank 5, the inside of this convex part 101, the hot water tank 6, and Is provided with a communication pipe 102 that communicates with the lower end. Specifically, as shown in FIG. 13, the substantially cylindrical convex portion 101 is slightly protruded from the top of the cold water tank 5, and the upper end of the communication pipe 102 is inserted into the convex portion 101 and opened. It is a so-called double tubular structure. And the drinking water W supplied from the line 10 does not flow out of the communicating pipe 102 directly by connecting the line 10 to an appropriate part of the side wall of the convex portion 101. Further, a notch 103 is formed by notching a part of the upper end of the communication pipe 102 in a U shape at a part (for example, the front side in FIG. 13) different from the part to which the line 10 is connected in the convex part 101. The air A in the cold water tank 5 is easy to flow out into the hot water tank 6.

  In addition, a drain pipe 51 is provided for discharging the drinking water W in the cold water tank 5 from the vicinity of the bottom of the cold water tank 5 downward, and the drinking water W in the hot water tank 6 is discharged from the vicinity of the top of the hot water tank. A discharge pipe 63 is provided.

  Hereinafter, the operation procedure (steps S41 to S43) of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the fifth embodiment will be described. Before entering the step S41, the bottle holder 2 of the water server 1 is opened and the bag body 4 is supported in a substantially standing posture on the support portion 7 in the state of the bottle holder 2 ′. Assume that the bag body 4 is set at a predetermined position.

  In step S41, supply of the drinking water W from the bag body 4 into the cold water tank 5 is started. First, the needle 8 is set on the support portion 7. The user manually operates to push the needle 8 into the bag body 4. Then, the tip of the needle 8 breaks through the front lower side of the bag body 4 and reaches the inside thereof.

  Then, the tension acting in the direction in which the bag body 4 shrinks and the weight of the drinking water W itself filled in the bag body 4 act simultaneously, so that the drinking water W in the bag body 4 is removed from the needle 8. It is discharged into the hose 9. The drinking water W discharged to the hose 9 is further supplied to the convex portion 101 of the cold water tank 5 through the line 10. After that, the bottle holder 2 ′ of the water server 1 is closed so that the bottle holder 2 is in the state. However, the bottle holder 2 does not necessarily need to be openable and closable, and may be simply placed on the main body 3, for example.

  By the way, in the initial state, the water supply port 11 of the cold water tank 5 and the water supply port 12 of the hot water tank 6 are both closed. Then, even if it is going to supply drinking water W from the bag body 4 into the cold water tank 5 and the hot water tank 6, since both the cold water tank 5 and the hot water tank 6 contain a large amount of air A, both tanks 5 , 6 is difficult to supply drinking water W. Therefore, in step S42, when only the water supply port 12 of the hot water tank 6 is opened, the air A in the cold water tank 5 is collected on the convex portion 101 and then flows out into the hot water tank 6 through the communication pipe 102. The The air A flowing out into the hot water tank 6 is discharged to the outside from the water supply port 12 through the discharge pipe 63. For this reason, the drinking water W comes to be supplied into the cold water tank 5 from the gap between the convex portion 101 and the communication pipe 102.

  When the inside of the cold water tank 5 is filled with the drinking water W, the drinking water W flows out from the communication pipe 102 to the hot water tank 6 this time. Until the hot water tank 6 is filled with the drinking water W, the air A comes out from the water supply port 12, so that the water supply port 12 remains open until then. The used amount from the respective tanks 5 and 6 after the hot water tank 6 is filled with the drinking water W is supplied to the respective tanks 5 and 6 individually.

  Thus, when the drinking water W is supplied into the cold water tank 5, the initial air in the cold water tank 5 is discharged to the hot water tank 6 through the communication pipe 102 by the supplied drinking water W. The inside of the cold water tank 5 can be quickly brought into an airless state. After that, the water inlet 12 is closed.

  Thereafter, in step S43, the drinking water W cooled in the cold water tank 5 and the drinking water W warmed in the hot water tank 6 are opened and closed by opening and closing the water supply ports 11 and 12, respectively. Only a fixed amount is poured.

  When the drinking water W in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with the drinking water W. At this time, the bottle holder 2 of the water server 1 is opened again. Thus, the needle 8 is pulled out of the bag body 4 in the state of the bottle holder 2 ′. And after setting another bag body 4 to a predetermined position, water supply can be performed now by repeating each said step S41-S43 again in order.

  As described above, according to the fifth embodiment, since the drinking water W from the bag body 4 is supplied into the convex portion 101, the cold water tank 5 is further added to the effects of the fourth embodiment. There is an advantage that the nozzle arrangement near the top of the nozzle becomes easy.

(Embodiment 6)
FIG. 14 is a side sectional view schematically showing the overall configuration of the water server 1 according to Embodiments 6 and 7 of the present invention. In the figure, the left side shows the front and the right side shows the back. Further, as a material for the water server 1, synthetic resin, rubber, metal, and the like are mainly used in place.

  As shown in FIG. 14, the water server 1 includes a bottle holder 2 and a main body 3. The bottle holder 2 sets a bag body (corresponding to a first container) 4 containing drinking water as a liquid inside, or on the main body 3 in order to take out the set bag body 4 to the outside. It is attached so that it can be opened and closed (reference numeral 2 in FIG. 14 indicates a closed state, and reference numeral 2 ′ indicates an open state). A cold water tank (corresponding to the second container) 5 for cooling the drinking water and a hot water tank (corresponding to the third container) 6 for warming the drinking water are arranged inside the main body 3 vertically. ing.

  The bag body 4 is made of a material having a high elasticity such as a nylon film having a multilayer structure, and can be deformed by shrinking as the drinking water filled therein decreases. And in the initial state filled with drinking water, it is roundish as a whole and has a slightly flat hexahedral shape. Here, the bag body 4 is supported by the support portion 7 in a substantially standing posture. The shape of the bag body 4 in the initial state may be another shape such as a square or a cylindrical shape.

  The support portion 7 is provided with a relatively large radius from the back to the front so as not to obstruct the reduction deformation of the bag body 4 as much as possible, and is provided with a relatively small radius at the front. The bag 4 can be set so as to be reduced and deformed without excessive twisting when the drinking water filled in the bag 4 is taken out between the two rounds. Although not shown in the figure, appropriate rounds are provided on both the left and right sides of the support portion 7 to achieve the same effect.

  The bag body 4 supported by the support portion 7 can be pierced in the vicinity of the bottom surface on the front side by piercing the needle 8 horizontally or slightly downward. The needle 8 is attached to the support portion 7 on the front side and pierces the bag body 4.

  And the drinking water taken out from the bag body 4 through the flexible hose 9 made of, for example, silicon rubber connected to the base portion of the needle 8 and the line 10 further connected to the hose 9 is supplied to the cold water tank 5. The convex portion 101 is supplied. A part of the drinking water supplied to the convex portion 101 of the cold water tank 5 is also supplied to the hot water tank 6 through the communication pipe 102.

  The cold water tank 5 is provided with a cooling means 50 such as a refrigerator for cooling the drinking water, and the drinking water supplied from the bag body 4 is cooled by the cooling means 50, whereby the cold water tank 5. The temperature is maintained at about 4 to 10 ° C.

  The warm water tank 6 is provided with a heating means 60 such as a band heater or a sheathed heater for heating the drinking water, and the drinking water supplied from the bag body 4 is heated by the heating means 60. The hot water tank 6 is maintained at a temperature of about 80 to 90 ° C.

  Further, the drinking water cooled in the cold water tank 5 and the drinking water warmed in the hot water tank 6 are poured into a cup or the like (not shown) by a predetermined amount by opening and closing the respective water supply ports 11 and 12. It has become.

  15 is a conceptual diagram of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the sixth embodiment, FIG. 16 is a perspective view of the convex portion 101, FIG. 17 is a perspective view of the venturi tube 52, and FIG. It is a perspective view.

  As shown in FIG. 15, a convex portion 101 to which the drinking water W is supplied from the bag body 4 is provided near the top of the cold water tank 5, and the convex portion 101 and the hot water tank 6 communicate with each other in a descending manner. A communication pipe 102 is provided. Specifically, as shown in FIG. 16, the substantially cylindrical convex portion 101 is slightly protruded from the top of the cold water tank 5, and the upper end of the communication pipe 102 is inserted into the convex portion 101 and opened. It is a so-called double tubular structure. And the drinking water W supplied from the line 10 does not flow out of the exhaust pipe 53 directly by connecting the line 10 and the exhaust pipe 53 to be described later to the opposite parts in plan view of the convex portion 101. It has become. Further, a notch 103 is formed by notching a part of the upper end of the communication pipe 102 in a U-shape at a portion (for example, the front side in FIG. 16) between the line 10 and the exhaust pipe 53 in the convex portion 101. The air A in the cold water tank 5 is easy to flow out into the hot water tank 6. However, when the convex portion 101 is not provided, it is preferable to arrange the line 10 and the exhaust pipe 53 near the top of the cold water tank 5.

  Further, the drainage pipe 51 that discharges the drinking water W in the cold water tank 5 from the vicinity of the bottom of the cold water tank 5 and the air A in the cold water tank 5 is discharged from the convex portion 101 through the throttle portion. In addition to the exhaust pipe 53, a connecting portion for connecting the exhaust pipe 53 to the drain pipe 51 at a position lower than the bottom of the cold water tank 5 is provided.

  At this time, according to “Bernouli's theorem” which is an energy conservation law in the fluid, the static pressure in the connection portion of the drainage pipe 51 is larger than that in the cold water tank 5. Only the dynamic pressure due to decreases. And, as the head difference between the liquid level in the cold water tank 5 and the connection portion of the drainage pipe 51 becomes larger, the flow in the drainage pipe 51 becomes faster. Accordingly, the air A from the exhaust pipe 53 is changed accordingly. It becomes easy to suck. Actually, the head difference is up to the outlet end of the drainage pipe 51, but here, the head difference is made up to the connection portion with a margin. The pipe resistance is negligible.

  The connecting portion is constituted by a venturi tube 52. That is, as shown in FIG. 17, the venturi tube 52 includes a first large diameter portion 521, a reduced diameter portion 522, a small diameter portion 523, an enlarged diameter portion 524, a second large diameter tube 525, and a suction tube 526. And a junction 527. The first large diameter portion 521 is connected to the drain pipe 51 on the cold water tank 5 side, and the second large diameter section 525 is connected to the drain pipe 51 on the water supply port 11 side. The suction pipe 526 is connected at a right angle at the junction 527 of the small diameter part 523, and its tip is connected to the exhaust pipe 53.

  In this venturi pipe 52, the drinking water W that has flowed into the first large diameter part 521 from the drain pipe 51 on the cold water tank 5 side at the speed v1 is guided to the small diameter part 523 while increasing the flow velocity at the reduced diameter part 522. Therefore, the speed is set to v2. Then, since the dynamic pressure in the small diameter portion 523 becomes higher than the dynamic pressure in the drainage pipe 51 described above, the air A from the suction pipe 526 is more easily sucked accordingly. Here, it is assumed that the air A is sucked at the speed v3. The drinking water W that has passed through the small-diameter portion 523 is led from the second large-diameter portion 525 to the drainage pipe 51 on the water supply port 11 side while reducing the flow velocity at the enlarged-diameter portion 524.

  In the middle of the exhaust pipe 53, an orifice 54 as a throttle portion is provided. That is, as shown in FIG. 18, the orifice 54 includes a main body 541 and a hole 542 that passes through the main body 541, and the hole diameter is set according to the passage amount of the air A. The orifice 54 is provided in such a posture that the axial center of the through hole 542 is oriented vertically. The reason is that the drinking water W passes through the through-hole 542 of the orifice 54 after the air A has passed. However, if the axial center of the through-hole 542 of the orifice 54 is in a lateral orientation, A part of the air A that has passed through the stagnation stays around the through-hole 542, thereby inhibiting the subsequent passage of the drinking water W and possibly causing a phenomenon that the resistance loss of the orifice 54 becomes unstable. Because there is. Moreover, it is also for preventing the propagation of various bacteria by the remaining air A.

  The orifice 54 has a specific weight when air A, drinking water W, or a mixture thereof flowing into the through hole 542 of the main body 541 connected to the exhaust pipe 53 at a speed v4 passes through the through hole 542. A pipe resistance proportional to the size is given. For example, the pipe resistance when drinking water W passes through the through hole 542 is approximately 1000 times the pipe resistance when air A passes through the through hole 542. In the case of a mixture of drinking water W and air A, an intermediate pipe resistance is given by their ratio. Thereby, the air A and the mixture easily pass through the through hole 542, but the drinking water W hardly passes through the through hole 542.

  Hereinafter, an operation procedure (steps S51 to S54) of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the sixth embodiment will be described. Before entering the step S51, the bottle holder 2 of the water server 1 is opened and the bag body 4 is supported in a substantially standing posture on the support portion 7 in a state like the bottle holder 2 ′. Assume that the bag body 4 is set at a predetermined position.

  In step S51, supply of the drinking water W from the bag body 4 into the cold water tank 5 is started. First, the needle 8 is set on the support portion 7. The user manually operates to push the needle 8 into the bag body 4. Then, the tip of the needle 8 breaks through the front lower side of the bag body 4 and reaches the inside thereof.

  Then, the tension acting in the direction in which the bag body 4 shrinks and the weight of the drinking water W itself filled in the bag body 4 act simultaneously, so that the drinking water W in the bag body 4 is removed from the needle 8. It is discharged into the hose 9. The drinking water W discharged to the hose 9 is further supplied to the convex portion 101 of the cold water tank 5 through the line 10. After that, the bottle holder 2 ′ of the water server 1 is closed so that the bottle holder 2 is in the state. However, the bottle holder 2 does not necessarily need to be openable and closable, and may be simply placed on the main body 3, for example.

  By the way, in the initial state, the water supply port 11 of the cold water tank 5 and the water supply port 12 of the hot water tank 6 are both closed. Then, even if it is going to supply drinking water W into the cold water tank 5 and the warm water tank 6 from the convex part 101, since both a large amount of air A is contained in the cold water tank 5 and the warm water tank 6, both tanks 5 , 6 is difficult to supply drinking water W. Therefore, in step S52, when only the water supply port 12 of the hot water tank 6 is opened, the air A in the cold water tank 5 flows out from the convex portion 101 through the communication pipe 102 into the hot water tank 6. The air A flowing out into the hot water tank 6 is discharged to the outside from the water supply port 12 through the discharge pipe 63. For this reason, the drinking water W comes to be supplied into the cold water tank 5 from the gap between the convex portion 101 and the communication pipe 102.

  When the inside of the cold water tank 5 is filled with the drinking water W, the drinking water W flows out from the communication pipe 102 to the hot water tank 6 this time. Until the hot water tank 6 is filled with the drinking water W, the air A comes out from the water supply port 12, so that the water supply port 12 remains open until then. The used amount from the respective tanks 5 and 6 after the hot water tank 6 is filled with the drinking water W is supplied to the respective tanks 5 and 6 individually.

  Thus, when the drinking water W is supplied into the cold water tank 5, the initial air in the cold water tank 5 is discharged to the hot water tank 6 through the communication pipe 102 by the supplied drinking water W. The inside of the cold water tank 5 can be quickly brought into an airless state. After that, the water inlet 12 is closed.

  By the way, it is assumed that air A is slightly mixed in the cold water tank 5 for some reason. At this time, the liquid level in the cold water tank 5 should still be high. Therefore, in step S53, drinking water is taken out with the liquid level in the cold water tank 5 being high. At this time, the water supply port 11 is opened. Then, the drinking water W moves in the drainage pipe 51, and the air A intervening in the upper part of the cold water tank 5 flows through the exhaust pipe 53 and the orifice 54 by the flow of the drinking water W in the drainage pipe 51. The phenomenon of being pulled to the tube 52 occurs.

  Eventually, when the air A in the cold water tank 5 decreases, a phenomenon in which a small amount of drinking water W is drawn to the venturi 52 by being mixed with the air A from the exhaust pipe 53 will occur. At this time, the mixture of the air A and the drinking water W passes through the orifice 54, but its specific weight is close to that of the air A, so the resistance loss of the orifice 54 is almost the same as that for the air A. You may think. Therefore, a phenomenon in which the mixture of the air A and the drinking water W interposed in the upper part of the cold water tank 5 is easily drawn by the venturi pipe 52 at the connection portion of the drainage pipe 51 through the exhaust pipe 53 and the orifice 54. ing. As a result, the air A accumulated in the cold water tank 5 is quickly exhausted to the outside together with the drinking water W.

  In step S54, the drinking water W is taken out when the inside of the cold water tank 5 is almost full. That is, it is assumed that the liquid level in the cold water tank 5 has further increased and has risen to the vicinity of the upper part. Then, the drinking water W moves in the drainage pipe 51, and the flow of the drinking water W in the drainage pipe 51 almost eliminates the air A interposed in the upper part of the cold water tank 5. A phenomenon of being pulled to the venturi pipe 52 through the exhaust pipe 53 and the orifice 54 occurs.

  At this time, only the drinking water W passes through the orifice 54, but its specific weight is 1000 times the specific weight of air, so the resistance loss of the orifice 54 is also 1000 times the resistance loss of the air A. Can be easily understood. Therefore, it is difficult for the drinking water W interposed in the upper part of the cold water tank 5 to be drawn by the venturi pipe 52 through the exhaust pipe 53 and the orifice 54. As a result, the drinking water W from near the upper part in the cold water tank 5 is not easily drained to the outside.

  And when it will be in an airless state again, the water supply port 11 is closed. Thereafter, the drinking water W cooled in the cold water tank 5 and the drinking water W warmed in the hot water tank 6 are poured into a glass or the like (not shown) by a predetermined amount by opening and closing the respective water supply ports 11 and 12. It is.

  When the drinking water W in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with the drinking water W. At this time, the bottle holder 2 of the water server 1 is opened again. Thus, the needle 8 is pulled out of the bag body 4 in the state of the bottle holder 2 ′. And after setting another bag body 4 in a predetermined position, water supply can be performed now by repeating said each step S1-S4 again in order.

  As described above, according to the sixth embodiment, the convex portion 101 that supplies the drinking water W from the bag body 4 to the cold water tank 5 is provided near the top of the cold water tank 5, and the convex portion 101 and the hot water are provided. A communication pipe 102 communicating with the inside of the tank 6 in a descending manner, and air A or drinking water W discharged from the cold water tank 5 through the communication pipe 102 into the hot water tank 6 is near the top of the hot water tank 6. When the drinking water W is supplied from the bag body 4 into the cold water tank 5, the air A in the cold water tank 5 is compressed, and the compressed air A is communicated with the communication pipe 63. The hot water tank 6 is discharged into the hot water tank 6 through the pipe 102, and the air A discharged into the hot water tank 6 is discharged from the hot water tank 6 to the outside through the discharge pipe 63. As a result, particularly in the initial state, the time until the inside of the cold water tank 5 and the hot water tank 6 is in an airless state can be greatly shortened.

  In addition, according to the sixth embodiment, the drain pipe 51 that discharges the drinking water W in the cold water tank 5 from the vicinity of the bottom of the cold water tank 5 and the air A in the cold water tank 5 are squeezed from the convex portion 101. And a drainage pipe 51 connected to the drainage pipe 53 so that the drainage pipe 51 is connected to the drainage pipe 53, so that the beverage near the top of the cold water tank 5 can be used from the exhaust pipe 53 in use. It becomes difficult to suck the water W. Therefore, since the relatively cold drinking water W near the bottom of the cold water tank 5 can be discharged out of the cold water tank 5 without being mixed with the relatively warm drinking water W near the top, the cooling efficiency can be improved. .

  By the way, depending on the size of the pipe resistance, restrictions on arrangement, etc., the liquid level in the cold water tank 5 does not rise forever, and the head difference from the liquid level to the venturi pipe 52 may be hardly taken. . Therefore, as in Modification 1 shown in FIG. 19, the drainage pipe 51 is once raised between the drainage part 56 for drinking water W and the venturi pipe 52 near the bottom of the cold water tank 5. Then lower it. Thereby, the temporary storage part 55 of the drinking water is formed in the drainage pipe 51, for example in reverse U shape. Reference numeral H <b> 1 is the height of the reservoir portion 55, but it is preferable that the top portion is set below the ceiling of the cold water tank 5 and above the bottom portion, and the Venturi tube 52 is set slightly below the tank bottom portion.

  According to the first modification, the drinking water W is supplied from the bag body 4 to the cold water tank 5 through the needle 8 and the like. The drinking water W that has entered the cold water tank 5 is discharged from the discharge portion 56 of the drain pipe 51 near the bottom of the tank 5. The drinking water W discharged from the discharge portion 56 passes through the pool portion 55 and is discharged from the drainage pipe 51 through the venturi pipe 52.

  Therefore, if the height H1 of the reservoir 55 is set below the ceiling in the cold water tank 5 and above the bottom, the liquid level in the cold water tank 5 rises even if the water supply port 11 is opened. The drinking water W is not discharged until H≈H1. Even at this time, since the water is supplied from the bag body 4 through the needle 8 or the like, the air A in the cold water tank 5 is compressed. Therefore, only air A is exhausted through the exhaust pipe 53.

  Eventually, when the liquid level in the cold water tank 5 rises and the head difference H≈H1, the drinking water W that has entered the cold water tank 5 is discharged from the drain pipe 51 through the venturi pipe 52. At this time, the air A in the cold water tank 5 is discharged by being sucked from the exhaust pipe 53 to the venturi pipe 52 through the orifice 54.

  And the drinking water W will accumulate in the cold water tank 5 until it exceeds the accumulation part 55, but when the accumulated drinking water W is extracted from the tank 5, since the accumulation part 55 works as a siphon, the tank 5 There is very little residual liquid inside.

  As described above, in the first modification, the drainage pipe 51 is once raised between the drainage part 56 and the venturi pipe 52 of the drinking water W in the vicinity of the bottom of the cold water tank 5, and then lowered. Since a temporary reservoir 55 for drinking water is formed, a liquid level in the cold water tank 5 is secured, and a certain head difference H can be obtained between the liquid level and the venturi pipe 52.

(Embodiment 7)
By the way, since the bag body 4 and the cold water tank 5 are slightly depressurized in order to extract the air A from the bag body 4 and the cold water tank 5, the hot water tank 6 communicating therewith is also slightly depressurized. In the hot water tank 6 under this reduced pressure, the hot water heated to about 80 to 90 ° C. boiled, and the boiled hot water may flow back through the communication pipe 102 and enter the bag body 4 or the cold water tank 5. . Thereby, especially the cooling efficiency in the cold water tank 5 falls, and there also existed a malfunction that it became contrary to the request | requirement of energy saving in this case.

  FIG. 20 is a conceptual diagram of the air vent structure of the cold water tank 5 and the hot water tank 6 according to the seventh embodiment, and FIG. 21 is a perspective view of the vortex diode 62. In the seventh embodiment, in order to eliminate the above-described problem, a vortex diode 62 as a fluid element that increases the line resistance compared to the supply time when the drinking water W flows backward is provided in the communication pipe 102 as shown in FIG. Provided. Detailed description of elements common to those in the first to sixth embodiments is omitted.

  21, the vortex diode 62 corresponds to a cylindrical main body 621, a first nozzle 623 connected in a tangential direction on the circumferential surface of the main body 621, and an upper end surface (one end surface) of the main body. ) And a second nozzle 622 connected in the central axis direction.

  In this vortex diode 62, when drinking water flows in from the first nozzle 623 connected in the tangential direction on the peripheral surface of the cylindrical main body 621, a vortex is formed, and centrifugal force thereby acts to act as a central pressure. As a result, the resistance is increased. Conversely, when drinking water flows in from the second nozzle 622 connected in the central axis direction of the one end surface of the main body 621, a vortex is not formed and only a small shape resistance is generated. In this manner, the vortex diode 62 has a resistance that increases when a fluid flows in from one side, and extremely decreases when a fluid flows in from the other side. Therefore, the vortex diode 62 performs a function similar to a diode in an electric system.

  The vortex diode 62 is arranged such that the upper and lower end surfaces of the main body 621 and the first nozzle 623 are oriented sideways, and the second nozzle 622 is oriented upward. The reason for this arrangement is that a part of the air that has passed first does not remain in the main body 621, and then does not prevent drinking water from flowing into the second nozzle and passing through the main body 621. This is to reliably prevent the occurrence of a phenomenon that makes the flow of drinking water in the diode 62 unstable.

  22A and 23A are explanatory diagrams (side views) showing an operation procedure (steps S61 to S64) of the vortex diode 62, and FIGS. 22B and 23B are explanatory diagrams showing an operation procedure (steps S61 to S64) of the vortex diode 62. Is a plan view). This will be described below. Before entering step S61, the bottle holder 2 of the water server 1 is opened and the bag body 4 is supported in a substantially standing posture on the support portion 7 in the state of the bottle holder 2 ′. Assume that the bag body 4 is set at a predetermined position.

  In step S61, the supply of drinking water from the bag body 4 into the cold water tank 5 is started. First, the needle 8 is set on the support portion 7. The user manually operates to push the needle 8 into the bag body 4. Then, the tip of the needle 8 breaks through the front lower side of the bag body 4 and reaches the inside thereof.

  Then, the tension acting in the direction in which the bag body 4 shrinks and the weight of the drinking water itself filled in the bag body 4 act simultaneously, so that the drinking water in the bag body 4 is transferred from the needle 8 to the hose 9. It is discharged inside. The drinking water discharged to the hose 9 is further supplied to the convex portion 101 through the line 10.

  The drinking water supplied to the convex portion 101 is supplied as it is to the cold water tank 5 and stored in the cold water tank 5. The stored drinking water is maintained at a temperature of about 4 to 10 ° C. in the cold water tank 5 by being cooled by the cooling means 50. Further, the air accumulated in the cold water tank 5 is discharged into the hot water tank 6 through the communication pipe 102, so that the inside of the cold water tank 5 is in an airless state. At this time, the inside of the cold water tank 5 may be slightly decompressed.

  Here, since the vortex diode 62 is interposed and connected in the middle of the communication pipe 102, the air from the cold water tank 5 is discharged into the hot water tank 6 through the vortex diode 62. Drinking water supplied from the bag 4 or the cold water tank 5 is also supplied into the hot water tank 6 via the vortex diode 62.

  At this time, as shown in FIGS. 22A and 22B, the drinking water flows around the axis of the main body 621 from the second nozzle 622 connected to the communication pipe 102 (A1 in FIGS. 22A and 22B). Then, the drinking water flows outward in the radial direction within the main body 621 (B1 in FIGS. 22A and 22B) and flows out from the first nozzle 623 in the tangential direction (C1 in FIGS. 22A and 22B). ). Then, it begins to flow from the first nozzle 623 again into the hot water tank 6 through the communication pipe 102. After that, the bottle holder 2 ′ of the water server 1 is closed so that the bottle holder 2 is in the state. However, the bottle holder 2 does not necessarily need to be openable and closable, and may be simply placed on the main body 3, for example.

  In step S62, drinking water is supplied in a state where the liquid level in the hot water tank 6 is low. That is, initially there is no drinking water in the hot water tank 6, but when drinking water enters the hot water tank 6 from the bag body 4 or the cold water tank 5 through the communication pipe 102 as described above, The liquid level gradually increases. At this time, since the hot water tank 6 is connected to the water supply port 12 through the discharge pipe 63, the air accumulated in the hot water tank 6 is discharged to the outside by opening the water supply port 12. In this way, the inside of the hot water tank 6 is also in an airless state, but if the water supply port 12 is closed after that, the hot water tank 6 may be slightly decompressed.

  In step S63, drinking water is supplied in a state where the liquid level in the hot water tank 6 is high. That is, it is assumed that the drinking water supplied in the hot water tank 6 is stored in the hot water tank 6 and heated to about 80 to 90 ° C. by the heating means 60 here. Then, the heated drinking water boils in the hot water tank 6 that has been slightly depressurized, and the drinking water moves in the reverse direction in the communication pipe 102 and tries to flow backward in the vortex diode 62. Suppose that happened.

  At this time, as shown in FIGS. 23A and 23B, the drinking water boiled in the hot water tank 6 flows in the tangential direction from the outer periphery of the main body 621 from the first nozzle 623 connected to the communication pipe 102 (FIGS. 23A and 23B). A2) in 23B. Then, since the drinking water generates a vortex in the main body 621, it is difficult for the drinking water to flow inward in the radial direction (B2 in FIGS. 23A and 23B), and further, it is difficult for the second water 622 to flow around the axis. (C2 in FIGS. 23A and 23B). Accordingly, the vortex formed in the main body 621 makes the resistance extremely large and makes it difficult for the drinking water to flow backward.

  In step S64, the drinking water cooled in the cold water tank 5 and the drinking water warmed in the hot water tank 6 are poured into a cup or the like (not shown) by a predetermined amount by opening and closing the water supply ports 11 and 12, respectively. It is.

  When the drinking water in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with drinking water. At this time, the bottle holder 2 of the water server 1 is opened again, The needle 8 is pulled out of the bag body 4 in the state of being the bottle holder 2 ′. Then, after another bag 4 is set at a predetermined position, water can be supplied by repeating the steps S61 to S64 again in order.

  As described above, according to the seventh embodiment, the communication pipe 102 is provided with the vortex diode 62 as a fluid element that increases the line resistance when the drinking water W flows backward than when it is supplied. Since the drinking water W from the cold water tank 5 is directly supplied to the hot water tank 6 and hardly flows back, the heating efficiency and the cooling efficiency in the cold water tank 5 are not reduced as in Patent Documents 3 and 4, It will meet the demand for energy saving.

  Moreover, unlike the case where a backflow prevention valve is provided, the backflow prevention valve becomes a resistance and does not obstruct the flow of the drinking water W, and the maintenance thereof is also unnecessary. Moreover, like the case where a coil part, a U-seal part, etc. are provided, the coil part, the U-seal part, etc. become resistance and do not hinder the flow of drinking water W, and air A stays there. Disappears. Therefore, even when the airless structure is adopted, the backflow of the drinking water W from the hot water tank 6 to the bag body 4 and the cold water tank 5 can be suppressed, and stable liquid supply can be performed at all times.

  Incidentally, in the seventh embodiment, the vortex diode 62 is used as the fluid element. However, the vortex diode 62 ′ according to the second modification is a further improvement of the vortex diode 62. In the following description, the vortex diode 62 is replaced with the vortex diode 62 'in FIG. However, since elements common to the seventh embodiment are as described above, detailed description thereof is omitted.

  In the water server 1 according to the second modification, as shown in FIG. 20, drinking water to the hot water tank 6 is supplied via an improved vortex diode 62 ′ as a fluid element in the middle of the water. ing.

  FIG. 24 is a perspective view of a vortex diode 62 ′ according to the second modification.

  As shown in FIG. 24, the vortex diode 62 ′ includes a cylindrical main body 621, a first nozzle 623 connected in a tangential direction on the peripheral surface of the main body 621, and a central axis direction on the upper end surface of the main body. The second nozzle 622 and at least one guide fin 624 disposed in place in the main body 621 are provided.

  The vortex diode 62 ′ is also arranged so that the upper and lower end surfaces of the main body 621 and the first nozzle 623 face sideways, and the second nozzle 622 faces upward. In addition to the above reason, this arrangement is used in order to prevent air from remaining around the guide fins 624 in the case of the vortex diode 62 '.

  In the vortex diode 62 ′, the drinking water supplied from the second nozzle 622 flows into the main body 621, is guided by the guide fins 624 in the main body 621, and then flows out from the first nozzle 623. At that time, since the vortex is less easily formed in the main body 621, the resistance is further reduced. On the other hand, the drinking water that has flowed into the main body 621 in the opposite direction from the first nozzle 623 tends to flow out of the second nozzle 622 against the guiding direction of the guide fins 624 in the main body 621. At that time, since the vortex is more easily formed, the resistance is further increased.

  FIGS. 25A and 26A are explanatory diagrams (side views) showing an operation procedure (steps S71 to S74) of the vortex diode 62 ′, and FIGS. 25B and 26B are explanations showing an operation procedure (steps S71 to S74) of the vortex diode 62 ′. It is a figure (plan view). This will be described below. Before entering the step S71, the bottle holder 2 of the water server 1 is opened, and the bag body 4 is supported in a substantially standing posture on the support portion 7 in the state of the bottle holder 2 ′. Assume that the bag body 4 is set at a predetermined position.

  In step S71, the supply of drinking water from the bag body 4 into the cold water tank 5 and the hot water tank 6 is started. First, the needle 8 is set on the support portion 7. The user manually operates to push the needle 8 into the bag body 4. Then, the tip of the needle 8 breaks through the front lower side of the bag body 4 and reaches the inside thereof.

  Then, the tension acting in the direction in which the bag body 4 shrinks and the weight of the drinking water itself filled in the bag body 4 act simultaneously, so that the drinking water in the bag body 4 is transferred from the needle 8 to the hose 9. It is discharged inside. The drinking water discharged to the hose 9 is further supplied to the convex portion 101 through the line 10.

  The drinking water supplied to the convex portion 101 is supplied as it is to the cold water tank 5 and stored in the cold water tank 5. The stored drinking water is maintained at a temperature of about 4 to 10 ° C. in the cold water tank 5 by being cooled by the cooling means 50. Further, the air A accumulated in the cold water tank 5 is discharged into the hot water tank 6 through the communication pipe 102, whereby the inside of the cold water tank 5 is in an airless state. At this time, the inside of the cold water tank 5 may be slightly decompressed.

  Here, since the vortex diode 62 'is interposed and connected in the middle of the communication pipe 102, the air from the cold water tank 5 is discharged into the hot water tank 6 via the vortex diode 62'. Drinking water supplied from the bag 4 or the cold water tank 5 is also supplied into the hot water tank 6 via the vortex diode 62 '.

  At this time, as shown in FIGS. 25A and 25B, the drinking water flows around the axis of the main body 621 from the second nozzle 622 connected to the communication pipe 102 (A1 in FIGS. 25A and 25B). Then, the drinking water is guided by the guide fins 624 in the main body 621 and flows outward in the radial direction (B1 in FIGS. 25A and 25B) and flows out tangentially from the first nozzle 623 (FIG. 25A, C1 in FIG. 25B). Then, it begins to flow from the first nozzle 623 again into the hot water tank 6 through the communication pipe 102. After that, the bottle holder 2 ′ of the water server 1 is closed so that the bottle holder 2 is in the state. However, the bottle holder 2 does not necessarily need to be openable and closable, and may be simply placed on the main body 3, for example.

  In step S72, drinking water is supplied in a state where the liquid level in the hot water tank 6 is low. That is, initially there is no drinking water in the hot water tank 6, but when drinking water enters the hot water tank 6 from the bag 4 or the cold water tank 5 as described above, the liquid level gradually increases. Become. At this time, since the hot water tank 6 is connected to the water supply port 12 through the discharge pipe 63, the air A accumulated in the hot water tank 6 is discharged to the outside by opening the water supply port 12. 6 is also airless. At that time, the pressure may be slightly reduced.

  In step S73, drinking water is supplied in a state where the liquid level in the hot water tank 6 is high. That is, it is assumed that the liquid level in the hot water tank 6 has increased to some extent, and the drinking water supplied into the hot water tank 6 has been heated to about 80 to 90 ° C. by the heating means 60. The heated drinking water boils in the hot water tank that has been slightly depressurized, and the drinking water moves in the reverse direction in the communication pipe 102, causing a phenomenon that the drinking water tries to flow backward in the vortex diode 62 ′. Shall happen.

  At this time, as shown in FIGS. 26A and 26B, the drinking water boiled in the hot water tank 6 flows in the tangential direction from the outer periphery of the main body 621 from the first nozzle 623 connected to the communication pipe 102 (FIGS. 25A and 25B). A2) in 25B. Then, the drinking water flows in the main body 621 against the guiding direction of the guide fins 624, but at this time, a vortex is generated, so that it becomes more difficult to flow inward in the radial direction (in FIGS. 25A and 25B). B2) Further, the second nozzle 622 becomes more difficult to flow around the axis (C2 in FIGS. 25A and 25B). Therefore, in the main body 621, the resistance is further increased by the generation of vortices, and the drinking water is less likely to flow backward.

  In step S74, the drinking water cooled in the cold water tank 5 and the drinking water warmed in the hot water tank 6 are poured into a glass (not shown) by a predetermined amount by opening and closing the water supply ports 11 and 12, respectively. It is.

  When the drinking water in the bag body 4 is used up, it is necessary to replace it with another bag body 4 filled with drinking water. At this time, the bottle holder 2 of the water server 1 is opened again, The needle 8 is pulled out of the bag body 4 in the state of being the bottle holder 2 ′. And after setting another bag body 4 in a predetermined position, water supply can be performed now by repeating said each step S71-S74 again in order.

  According to the second modification, the backflow of drinking water from the hot water tank 6 to the bag body 4 can be further suppressed, and more stable water supply can be performed.

  In the sixth embodiment, the venturi pipe 52 is provided at the connection portion between the drain pipe 51 and the exhaust pipe 53. However, when the head difference H is large, the venturi pipe 52 is omitted. You can also As a result, the structure becomes relatively simple, and further cost reduction can be achieved.

  In the sixth embodiment, the orifice 54 is exemplified as the throttle portion, but other throttle portions such as a miniature valve may be used. However, it is preferable to fix the miniature valve so that it is not operated by mistake.

  In the seventh embodiment, the vortex diode 62 (62 ′) as a fluid element is provided in the communication pipe 102 between the cold water tank 5 and the hot water tank 6, but either of the tanks 5 and 6 is provided. May be provided. In that case, it is good also as integrating with a tank.

  Moreover, in the said Embodiment 1-7, although the convex part 101 is made to protrude from the top part of the cold water tank 5, the vicinity of the top part of the cold water tank 5 is good also as the convex part 101 as it is. Moreover, when the line 10 is separated, the notch 103 at the upper end of the communication pipe 102 may be omitted.

  Moreover, a line heater 6 ′ provided instead of the hot water tank 6 may be used as in the third modification shown in FIG. 27. In the line heater 6 ′, the drinking water supplied from the communication pipe 102 is directly heated by the electric heating unit 60 ′ in the line heater 6 ′ to be heated to be discharged from the discharge pipe 63. Then, by incorporating a vortex ode 62 (62 ') similar to the above in the middle of the communication pipe 102, it is possible to eliminate the possibility that the liquid supplied from the communication pipe 102 will flow backward. Note that the line heater 6 'may be one in which the casing is oriented vertically as shown in FIG. 27, but may be one in which the casing is oriented sideways. Furthermore, the second container may be a heat exchanger that can use a heat source other than electricity, such as steam, and in this case, the present invention can be applied in the same manner as described above.

  In addition, although the drinking water W is illustrated as a liquid in the said Embodiments 1-7, all liquids, such as juice and liquor, may be sufficient as other liquids (it is not limited to the liquid for drinks). Further, in order to prevent local retention of the air at the time of air bleeding or the like, an appropriate inclination or radius may be provided in each tank or each line. Moreover, it cannot be overemphasized that said Embodiment 1-7 may be combined suitably. In that case, it is needless to say that any one of the bag body 4, the cold water tank 5, the hot water tank 6, and the needle 8, the communication pipe 102, etc. may be omitted as necessary.

1 Water server 2, 2 'Bottle holder 3 Body 4 Bag body (corresponds to the first container)
41 Bottom 5 Cold water tank (corresponds to second container)
50 Cooling means 51 Drainage pipe 52 Venturi pipe 53 Exhaust pipe 54 Orifice (corresponding to throttle part)
55 Reservoir 6 Warm water tank (corresponds to third container)
60 Heating means 62, 62 ′ Vortex diode (corresponding to fluid element)
621 body 622 second nozzle 623 first nozzle 624 guide fin 63 discharge pipe 7 support part 71 bulging part 8, 8 ', 8 "needle 81, 83, 81a needle body 811, 831 tip part 812, 832 intermediate part 813 833 Base part 814, 834 Opening 815, 816, 835 Passage 835a Step part 836 Rib 817, 837a Hose connection part 818 Stopper 837 Pin hole 82, 84, 85, 86, 82a Needle guide 821 Cylindrical part (equivalent to straight guide part) To do.)
822 Flat portion 823, 824, 825 Through groove 841, 851, 861 Cylindrical portion 842, 852, 862 Peripheral surface 843.853, 863 Spiral groove (corresponding to a spiral guide portion)
87 Pin 88 Spacer 89 Spring 819a Stabilization (corresponding to blocking mechanism)
826 button (corresponds to blocking mechanism)
826a compression spring (corresponding to a blocking mechanism)
827 Restriction plate (corresponding to blocking mechanism)
827a, 827b Stepped portion (corresponding to a blocking mechanism)
9 Hose 10 Line 101 Convex part 102 Communication pipe 103 Notch part 11, 12 Water supply port

Utility Model Registration No. 3164997 Utility Model Registration No. 3164948 JP 2009-35322 A JP 2011-37479 A

Claims (25)

A second container in which the liquid is disposed below the first container, and a third container that is disposed further below the second container, from a first container that can be deformed to shrink as the liquid filled therein decreases. And an air vent structure for the container configured to supply to
A communication pipe that communicates the vicinity of the top in the second container and the third container in a descending manner;
When the liquid is supplied to the second container through the needle by inserting a needle into the first container with the first container set at a predetermined position, the second container is connected to the second container via the communication pipe. A discharge pipe for discharging the air or liquid discharged from the container into the third container from the vicinity of the top of the third container;
When the liquid is supplied from the first container into the second container, the air in the second container is compressed, and the compressed air is discharged into the third container through the communication pipe, The air discharged into the third container is discharged from the third container to the outside through the discharge pipe, so that the liquid is filled in the second container, and the liquid filled in the second container. Is discharged into the third container through the communication pipe, so that the liquid is filled in the third container.   2. The air vent structure for a container according to claim 1, wherein the needle is pierced in a direction parallel to the bottom surface or in a downward direction near the bottom surface of the first container.   The needle includes a needle body having a spire-shaped tip portion and a needle guide having a guide portion for guiding the needle body, and the tip portion of the needle body is manually operated along the guide portion of the needle guide. 3. The air venting structure for a container according to claim 1 or 2, wherein the air venting structure according to claim 1 or 2 is configured so as to automatically appear and disappear.   4. The air bleeding structure for a container according to claim 3, wherein the guide portion of the needle guide has a straight shape.   4. The air bleeding structure for a container according to claim 3, wherein the guide portion of the needle guide has a spiral shape.   6. The air vent structure for a container according to claim 5, wherein a step portion which is asymmetric in the direction perpendicular to the axis is provided at the tip of the needle body.   The air bleeding structure for a container according to claim 5 or 6, wherein a spiral rib is attached to at least the tip of the needle body.   A blocking mechanism for preventing the tip portion of the needle body from appearing or retracting manually or automatically along the guide portion of the needle guide; The air venting structure for a container according to any one of claims 3 to 7, characterized in that the condition is released by manual operation. Forming said first container includes a support portion for supporting the, before Symbol supporting portion, a portion sticking the needle of the supported first container to allow restraint, by projecting the side facing to the site The air bleeding structure for a container according to any one of claims 1 to 8, wherein   The container according to any one of claims 1 to 9, wherein a convex portion is formed near the top in the second container, and the upper end of the communication pipe is opened in the convex portion. Air bleeding structure.   The air vent structure for a container according to claim 10, wherein the liquid from the first container is supplied into the convex portion.   The air vent structure for a container according to claim 11, wherein a notch portion is provided in a portion of the upper end of the communication pipe from which the liquid supply side is removed.   13. The air vent structure for a container according to claim 1, wherein a drainage pipe for discharging the liquid in the second container from the vicinity of the bottom of the second container is provided at the front end. . A drainage pipe for discharging the liquid in the second container from the vicinity of the bottom of the second container;
An exhaust pipe for discharging the air in the second container from the vicinity of the top of the second container through the throttle part, and
The air bleeding structure for a container according to any one of claims 1 to 13, wherein a connecting portion for connecting the exhaust pipe to the drain pipe is provided.   15. The air vent structure for a container according to claim 14, wherein the throttle portion is an orifice.   16. The air bleeding structure for a container according to claim 15, wherein the orifice is provided in a posture in which the axial center of the hole is vertically oriented.   The said connection part exists in the position lower than the bottom part of said 2nd container, The air bleeding structure of the container of any one of Claims 14-16 characterized by the above-mentioned.   A temporary reservoir of liquid is formed in the drainage pipe by raising and lowering the drainage pipe between the liquid discharge part and the connection part in the vicinity of the bottom of the second container. The air bleeding structure for a container according to claim 17.   The said connection part is comprised by the venturi pipe, The air bleeding structure of the container of any one of Claims 14-17 characterized by the above-mentioned.   The air vent structure for a container according to any one of claims 1 to 19, wherein the communication pipe is provided with a fluid element that increases a line resistance when the liquid flows backward than when the liquid flows.   The fluidic element includes a cylindrical main body, a first nozzle connected in a tangential direction on a peripheral surface of the main body, and a second nozzle connected in a central axis direction on one end surface of the main body. 21. The air bleeding structure for a container according to claim 20, wherein   The air venting structure for a container according to claim 21, wherein at least one end surface of the vortex diode body and the first nozzle are disposed sideways and the second nozzle is directed upward.   The vortex diode includes a guide fin configured to guide the liquid to the first nozzle side during the supply, but not to guide the liquid to the second nozzle side during the back flow. 22. The air bleeding structure of the container according to 22.   24. The air vent structure for a container according to claim 23, wherein the guide fin is curved along a flow direction of the liquid to be assumed at the time of supply.   A cold water tank comprising the container air vent structure according to any one of claims 1 to 24, wherein the first container is a stretchable bag body, and the second container is for cooling drinking water as a liquid, third A water server, wherein the container is a hot water tank for warming drinking water as a liquid.

Images