JP2015127551A - Flow straightener device and liquid storage device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flow straightener device of which installation and removal can be performed without disassembling a tank and provide a liquid storage device using the same.SOLUTION: A straightener 2 includes a fixed part 20, a middle rod part 30, and an umbrella part 40. The umbrella part 40 deforms its shape into a first closed state in which the umbrella is closed to one end part 31 with the other end 32 of the middle rod part 30 being applied as a reference under application of a force added toward the middle rod part 30 along a direction perpendicular to a longitudinal direction of the middle rod part 30; an opened state in which the umbrella shows an acute angle between the middle rod part 30 and the umbrella part 40 at a sectional part along the longitudinal direction of the middle rod part 30 under releasing of force applied toward the middle rod part 30; and a second closed state in which the umbrella is closed to a side opposite to one end part 31 with the other end part 32 being applied as a reference under application of a force directing from one end part 31 of the middle rod part 30 to the other end part 32 to the umbrella part 40.

Description

  The present invention relates to a rectifier that can be installed and removed without disassembling a tank, and a liquid storage device using the rectifier.

  2. Description of the Related Art A hot water storage device including a tank that stores hot water boiled using gas or electricity, and a liquid storage device including a tank that stores a high-temperature fluid used in a vehicle heat storage system are known. In these tanks, in order to prevent the liquid such as water injected from the water injection port from mixing with the liquid stored in the tank, rectification is performed to suppress the momentum of the liquid injected into the tank. A plate may be provided.

  However, for example, when the tank is made of resin and formed by blow molding, it is difficult to provide the current plate in the tank. In some cases, it is desired to provide a current plate in an existing tank. In these cases, there is a request to provide a current plate without disassembling the tank.

  Patent Document 1 below describes a current plate that can be provided later in a completed tank. This current plate has an umbrella shape, and corresponds to an umbrella bone corresponding to the bone of the umbrella, a current plate corresponding to the booth (cloth portion) of the umbrella, and a middle rod (handle) of the umbrella. With a center pipe. Then, the current plate part is folded into a state in which an umbrella is folded and inserted into the tank. After the rectifying plate portion is inserted, the rectifying plate portion is expanded in a state that an umbrella is spread in the tank. As the rectifying plate portion is expanded in the tank, the rectifying plate portion suppresses mixing of the liquid poured into the tank and the liquid contained in the tank before the water is poured.

JP 2009-47352 A

  Incidentally, the tank of the liquid storage device may be subjected to maintenance such as internal cleaning. For this reason, there is a demand not only to install the current plate in the tank after completion of the tank as described above, but also to remove the current plate from the tank. However, when the current plate part described in Patent Document 1 is expanded from the folded state and installed in the tank, it cannot be folded again and the above request cannot be met.

  Then, an object of this invention is to provide the rectifier which can be installed and removed without dismantling a tank, and a liquid storage apparatus using the same.

  In order to solve the above problems, the present invention provides a rectifier for rectifying a liquid poured from a water injection section of a tank, wherein a fixed section fixed to the water injection section and one end thereof are connected to the fixed section. And while the fixing portion is fixed to the water injection portion, an intermediate rod portion whose other end portion is located in the tank, and an umbrella portion that is locked to the other end portion of the intermediate rod portion, A first closed state in which the umbrella portion is closed toward the one end portion with respect to the other end portion by a force applied toward the middle rod portion, and applied toward the middle rod portion. When the generated force is released, the center rod portion and the umbrella portion are opened so as to have an acute angle, and the force in the direction from the one end portion of the center rod portion toward the other end portion Is added to the umbrella portion so that it is closed on the side opposite to the one end side with respect to the other end portion. It is characterized in that the deformed second and closed state, that.

  According to such a rectifier, a force is applied to the umbrella portion so that the umbrella portion is in the first closed state, and the umbrella portion is in the first closed state, through the water inlet of the water injection portion provided in the tank. The umbrella part can be inserted into the tank from the other end side of the part. Thereafter, when the force is no longer applied, the umbrella portion is opened. Since the umbrella part is opened and the fixing part is fixed to the water injection part, the umbrella part can suppress the momentum of the liquid injected from the water injection part of the tank. Thus, the umbrella portion can function as a current plate. Further, by applying a force to the umbrella portion in the second state, the umbrella portion is brought into a second closed state that is closed to the opposite side of the first closed state with respect to the other end of the middle rod portion, and the inside of the tank The rectifier can be removed from. At this time, the umbrella portion is pulled out of the tank from the side of the portion locked to the other end portion of the middle rod portion. Therefore, it can be prevented that the edge of the umbrella portion is caught on the inner surface of the tank and the rectifier cannot be removed from the tank. Thus, according to the rectifier of the present invention, the tank can be installed and removed without dismantling.

  Thus, in order for the umbrella part to be changed from the first closed state to the opened state, the umbrella part is made of resin, and the umbrella part is changed from the first closed state to the opened state by the elastic force of the resin. It is preferable.

  By opening the umbrella portion with the elastic force in this way, the umbrella portion can be easily changed from the first closed state to the open state without using a special mechanism. In addition, since the umbrella part is elastically deformed when the umbrella part is deformed from the open state to the second closed state, the umbrella part can be prevented from being damaged. it can.

  In addition, it is preferable that the umbrella portion is formed with a plurality of creases in which a mountain fold and a valley fold are alternately located while centering on a portion locked to the other end.

  By forming such a plurality of folds, the first closed state and the second closed state can be easily obtained. Moreover, even if it is a case where it receives water flow pressure from a water inlet in an open state in a tank, it can suppress that it deform | transforms by a crease | fold.

  In addition, it is preferable that the umbrella portion is changed from the open state to the second closed state by pulling out the middle rod portion with a predetermined force in a state where the umbrella portion is opened in the tank.

  By pulling out the rectifier in which the umbrella part is in the open state, the edge of the umbrella part is caught inside the tank, and a force in the direction from the fixing part to the umbrella locking part is applied to the umbrella part. Therefore, the umbrella portion is changed from the open state to the second closed state. As described above, since the rectifier can be removed simply by pulling out the middle rod portion, the rectifier can be easily removed.

  Moreover, in order to solve the said subject, the liquid storage apparatus of this invention is equipped with the tank which has a water injection part, and the rectifier which rectifies the liquid poured from the said water injection part, The said rectifier is fixed to the said water injection part A fixing portion that is connected to the fixing portion, and the other end portion is located in the tank with the fixing portion being fixed to the water injection portion, and the middle portion An umbrella portion that is locked to the other end portion of the rod portion, and the umbrella portion is the one end portion on the basis of the other end portion by a force applied toward the middle rod portion. A first closed state that is closed to the side, an open state in which the middle rod portion and the umbrella portion are opened at an acute angle by releasing a force applied toward the middle rod portion, and the middle rod portion When the force in the direction from the one end to the other end is applied to the umbrella, Those, wherein the second closed state to close the other end opposite the one end side as a reference, to deform.

  Since such a liquid storage device can install and remove the rectifier without dismantling the tank, it is excellent in maintainability such as cleaning the inside of the tank.

  As described above, according to the present invention, a rectifier that can be installed and removed without disassembling a tank, and a liquid storage device using the rectifier are provided.

It is a figure which shows the liquid storage apparatus which concerns on embodiment of this invention. It is a figure which shows the mode of the rectifier installed in the tank. It is a figure which shows the water flow in the case of pouring water in a tank main body from a lower water injection part. It is a figure which shows the mode in the middle of installing a rectifier in a tank. It is a figure which shows the mode in the middle of removing a rectifier from a tank.

  Hereinafter, preferred embodiments of a rectifier according to the present invention and a liquid storage device using the rectifier will be described in detail with reference to the drawings. For easy understanding, the scale described in each drawing may be different from the scale described in the following description.

  FIG. 1 is a diagram showing a liquid storage device according to an embodiment of the present invention. As shown in FIG. 1, the liquid storage device 100 includes a tank 1 and a rectifier 2 as main components. The liquid storage device 100 of the present embodiment is a hot water storage device used in a hot water storage system, for example, and stores hot water boiled by a heat source in the tank 1.

  The tank 1 mainly includes a tank main body 11, a lower water injection section 12 provided at the lower portion of the tank main body 11, and an upper water injection section 13 provided at the upper portion of the tank main body 11. The tank body 11 has a vertically long shape, and the horizontal cross-sectional shape is circular. The lower water pouring part 12 has a shape in which a short pipe is connected in the tank body 11, and a through hole of this pipe is used as a water pouring port. The lower water pouring unit 12 is a part for pouring cold water into the tank main body 11 from the water pouring port or discharging the cold water out of the tank main body 11. Moreover, the upper water injection part 13 is made into the shape where the short pipe | tube was connected in the tank main body 11 similarly to the lower water injection part 12, and let the through-hole of this pipe | tube be a water injection port. The upper water pouring unit 13 is a part for pouring hot water into the tank body 11 or discharging the hot water from the tank body 11.

  Moreover, in this embodiment, the tank 1 consists of multilayered resin, and the tank main body 11, the lower water injection part 12, and the upper water injection part 13 are integrally formed by blow molding. For example, the tank 1 is made of three layers of resin, the inner layer is made of polyphenylene ether resin, the intermediate layer is made of polyphenylene ether resin containing polyamide resin, and the outer layer is made of polyamide resin.

  A rectifier 2 is fixed to the lower water injection section 12 of the tank 1, and the rectifier 2 is located in the tank 1. FIG. 2 is a diagram illustrating a state of the rectifier installed in the tank 1. As shown in FIG. 2, the rectifier 2 includes a fixed portion 20, a middle rod portion 30, and an umbrella portion 40 as main components.

  In this embodiment, the fixing portion 20 is made of a plate-like member, and includes a triangular portion 21 and a quadrangular portion 22 connected to the triangular portion 21. The triangular portion 21 has one side connected to one side of the quadrangular portion 22. The length of the side connected to the triangular portion 21 of the quadrangular portion 22 is longer than the length of the side of the connected triangular portion 21. Accordingly, the fixing portion 20 is formed with a protruding portion 23 in which a quadrangular portion 22 protrudes from the triangular portion 21.

  The middle rod portion 30 is a rod-shaped portion, and one end portion 31 is connected to the fixed portion 20. Specifically, a vertex of the triangular portion 21 of the fixing portion 20 facing the side connected to the quadrangular portion 22 and one end portion 31 of the middle rod portion 30 are connected. The diameter of the middle rod portion 30 is substantially equal to the thickness of the fixed portion 20. Further, the other end portion 32 of the middle rod portion 30 is formed to have a larger diameter than other portions of the middle rod portion 30. A hole having a predetermined length is formed in the other end portion 32 from the end surface of the other end portion 32 along the longitudinal direction of the middle rod portion 30, and a locking member 33 is fitted into the hole. The locking member 33 is configured so as not to come out once it is inserted into the hole of the middle rod portion 30.

  The umbrella part 40 is comprised from the resin-made board | plate materials which have elasticity. In this embodiment, it is formed from a regular polygonal resin plate. Specifically, a plurality of folds 45 are formed radially from the center 41 of the resin plate material that is the regular polygon, and each vertex (each vertex of the regular polygon) and the center of the umbrella portion 40 are formed. The fold connecting 41 is a mountain fold 45m, and the fold connecting the middle point of each side (each side of the regular polygon) of the umbrella 40 and the center 41 is a valley fold 45v. Therefore, the mountain fold 45m and the valley fold 45v are alternately formed. The umbrella portion 40 is arranged so as to cover the middle rod portion 30 from the other end side 32 side of the middle rod portion 30, and the center 41 of the umbrella portion 40 is one of the middle rod portions 30 by the locking member 33. Locked to the end 32. As a result, as shown in FIG. 2, in the situation where the part that is the valley fold 45v is arranged closer to the middle rod part 30 than the part that is the mountain fold 45m, no force is applied to the umbrella part 40. In the cross section along the longitudinal direction of the rod portion 30, the middle rod portion 30 and the umbrella portion 40 are opened to open at an acute angle.

  In addition, when a force is applied to the umbrella portion 40 along the direction perpendicular to the longitudinal direction of the middle rod portion 30, each fold is further folded, and the middle rod portion 30 is centered. Folded up. That is, when such a force is applied, the first closed state in which the other end portion 32 of the middle rod portion 30 is closed to the one end portion 31 side is set. In addition, the umbrella portion 40 is elastically deformed when a force in a direction from the one end portion 31 of the middle rod portion 30 toward the other end portion 32 is applied, and is once expanded to the maximum. Folded to the opposite side of the first closed state. That is, the umbrella part 40 is set to a second closed state in which the umbrella part 40 is closed on the side opposite to the one end part 31 with the other end part 32 of the middle rod part 30 as a reference.

  In order for the umbrella part 40 to be deformed in this way, the resin having elasticity is, for example, polyethylene (PE), polypropylene (PP), polystyrene (PS), acrylonitrile butadiene styrene copolymer (ABS), vinyl acetate. (EVA), ethyl vinyl ether (EVE), vinyl chloride (PVC), polybutene 1 (PB), polyvinyl alcohol (PVOH), vinylidene chloride (PVDC), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), Any of fluororesin, thermoplastic elastomer, and thermosetting elastomer may be used. In particular, the resin is polyethylene (PE), polypropylene (PP), vinyl chloride (PVC), polybutene 1 (PB), polyamide (PA), polyethylene terephthalate (PET), thermoplastic elastomer, thermosetting elastomer, Since it is excellent in elastic performance, it is preferable from the viewpoint of excellent restoration performance in which the umbrella part 40 is in a closed state or an open state.

  Such a rectifier 2 is fixed to the tank 1 as follows. As shown in FIG. 2, a tubular nozzle joint 50 is connected to the lower water injection section 12 of the tank 1. A cutout 51 is formed in the nozzle joint 50 in a direction perpendicular to the direction of the hole of the tube, and the protrusion 23 in the fixed portion 20 of the rectifier 2 is fitted into the cutout 51. A part of the nozzle joint 50 is inserted into the water injection port 12 </ b> H of the lower water injection part 12 of the tank 1, and the nozzle joint 50 is fixed to the lower water injection part 12 by a quick fastener 54. In this state, an O-ring 53 is interposed between the nozzle joint 50 and the inner wall of the water inlet 12H to provide a seal. Thus, the fixing part 20 is fixed to the lower water injection part 12 via the nozzle joint 50.

  As described above, in the present embodiment, since the fixing portion 20 is plate-shaped, the through hole of the nozzle joint 50 is not blocked by the fixing portion 20 in a state where the fixing portion 20 is fixed to the lower water injection portion 12, and water is sufficient. A gap that flows through is formed. Further, in this state, the middle rod portion 30 of the rectifier 2 is positioned at the approximate center of the water injection port 12H toward the tank body 11 of the lower water injection unit 12 and extends in the opening direction of the water injection port 12H. It is fixed at a position extending from the lower water injection part 12 to the inside of the tank body 11. Thus, the other end portion 32 of the middle rod portion 30 is located in the tank body 11. In this state, the umbrella part 40 is located in the tank main body 11 and is open as described above.

  Water injection from the lower water injection unit 12 to the liquid storage device 100 is performed as follows. FIG. 3 is a diagram showing a water flow when water is poured into the tank body 11 from the lower water pouring unit 12. When water flows from the cold water pipe (not shown) connected to the nozzle joint 50 to the nozzle joint 50, the water flows from between the fixed portion 20 in the through hole of the nozzle joint 50 and the inner wall of the nozzle joint 50. The flowing water flows into the tank body 11 from the water inlet 12H of the lower water inlet 12. At this time, as shown in FIG. 3, since the middle rod portion 30 extends as described above, the middle rod portion 30 is positioned at the approximate center of the flow of water flowing from the lower water injection portion 12 into the tank body 11. . Then, the direction of the flow of the flowing water is changed by the umbrella portion 40, and the momentum in the direction from the lower water injection portion 12 to the inside of the tank body 11 is suppressed. In particular, the umbrella portion 40 is opened so that the middle rod portion 30 and the umbrella portion 40 have an acute angle in the cross section along the longitudinal direction of the middle rod portion 30 as described above. 11 flows between the wall surfaces of the eleventh wall in a vortex, and a part of the water flows upward from the gap between the edge of the umbrella portion 40 and the wall surface of the tank body 11. In this way, the momentum of the water flowing from the lower water injection section 12 is suppressed by the umbrella section 40.

  Next, how the rectifier 2 is installed in the tank 1 will be described. FIG. 4 is a diagram showing a state in the middle of installing the rectifier 2 in the tank 1. When installing the rectifier 2 in the tank 1, first, the fixing portion 20 of the rectifier 2 is fixed to the nozzle joint 50. And the force which goes to a center rod part along the direction perpendicular | vertical to the longitudinal direction of the center rod part 30 is applied to the umbrella part 40, and the umbrella part 40 is made into a 1st closed state. Next, as shown by the arrows in the figure, the umbrella portion 40 in the first closed state is inserted into the water injection port 12H of the lower water injection portion 12 from the other end portion 32 side of the middle rod portion 30. When the umbrella part 40 is inserted into the water inlet 12H to some extent, the inner wall of the water inlet 12H prevents the umbrella part 40 from spreading, so that it is not necessary to apply a force for closing the umbrella part 40. This state is the state shown in FIG. Alternatively, if the umbrella portion 40 is to be inserted into the water injection port 12H of the lower water injection portion 12 from the other end 32 side of the middle rod portion 30 with the umbrella portion 40 open, the umbrella portion is formed on the inner wall of the water injection port 12H. 40 abuts, and a force is applied from the inner wall to the umbrella 40 to bring the umbrella 40 into the first closed state. Therefore, also in this case, the umbrella 40 is in the first closed state, and is in the state shown in FIG. Next, when the nozzle joint 50 is pushed into the water injection port 12H from the state shown in FIG. 4, the umbrella portion 40 is pushed completely into the tank body 11. If the umbrella part 40 is located in the tank main body 11, since the umbrella part 40 will separate from the lower water injection part 12, the force which the umbrella part 40 will be in a 1st closed state will not be applied. And the umbrella part 40 will be in an open state with its own elastic force. Then, the nozzle joint 50 is fixed to the lower water injection part 12 using the quick fastener 54, and the rectifier 2 is installed in the tank 1 as shown in FIG.

  Next, how the rectifier 2 is removed from the tank 1 will be described. FIG. 5 is a diagram illustrating a state in the middle of removing the rectifier 2 from the tank 1. When removing the rectifier 2 from the tank 1, first, the quick fastener 54 is removed to release the fixing of the nozzle joint 50 to the lower water injection section 12. Next, the nozzle joint 50 is pulled out from the lower water injection unit 12, and the nozzle joint 50 is moved in a direction away from the lower water injection unit 12. Since the rectifier 2 is fixed to the nozzle joint 50, the movement of the nozzle joint 50 moves the middle rod portion 30 so as to be pulled out from the water injection port 12H of the lower water injection portion 12, and the umbrella portion 40 also moves toward the water injection port 12H. Moving. At this time, since the umbrella portion 40 is in the open state, the edge of the umbrella portion 40 abuts against the inner wall of the tank body 11 by the movement of the middle rod portion 30. Further, when the nozzle joint 50 moves, a force in the direction opposite to the moving direction of the middle rod portion 30 is applied from the inner wall of the tank body 11 to the edge of the umbrella portion 40. This force is a force in a direction from one end portion 31 of the middle rod portion 30 toward the other end portion 32. By this force, the umbrella portion 40 is once expanded to the maximum extent, and then closed to the opposite side to the first closed state. Further, when the nozzle joint 50 is moved, the umbrella portion 40 comes into contact with the edge of the water injection port 12H of the lower water injection portion 12, and from the edge toward the other end portion 32 from one end portion 31 of the middle rod portion 30. Directional force is applied. And it is set as the 2nd closed state. This state is shown in FIG. If it progresses to this state, the force which goes to the middle bar part 30 along the direction perpendicular | vertical to the longitudinal direction of the middle bar part 30 will also be applied to the umbrella part 40. FIG. Further, the rectifier 2 is removed from the tank 1 by further moving the nozzle joint 50 and pulling out the middle rod portion 30. In the process of removing the rectifier 2, the umbrella portion 40 is elastically deformed from the open state to the second closed state, so that damage is suppressed.

  As described above, the rectifier 2 according to the present embodiment is configured so that the umbrella portion 40 has the other end portion 32 by the force applied toward the middle rod portion 30 along the direction perpendicular to the longitudinal direction of the middle rod portion 30. In the cross-section along the longitudinal direction of the intermediate rod portion 30 by releasing the force applied to the intermediate rod portion 30 and the first closed state that closes to the one end portion 31 side as a reference, And the umbrella portion 40 are opened so as to have an acute angle, and the force in the direction from one end portion 31 of the middle rod portion 30 to the other end portion 32 is applied to the umbrella portion 40, so that the other end It changes into the 2nd closed state closed on the opposite side to the one end part 31 side on the basis of the part 32. FIG. Therefore, in a state where the umbrella portion 40 is in the first closed state, the umbrella portion is inserted into the tank body 11 from the other end 32 side of the middle rod portion 30 through the water injection port 12H of the lower water injection portion 12 provided in the tank 1. 40 can be inserted, and the rectifier 2 can be installed in the tank 1. Further, by pulling out the middle rod portion 30 from the water injection port 12H of the lower water injection portion 12, the umbrella portion 40 can be brought into the second closed state, the umbrella portion 40 can be extracted from the tank body 11, and the rectifier 2 Can be removed from the tank 1.

  Therefore, the liquid storage device 100 using such a rectifier 2 is easy to maintain.

  As mentioned above, although this invention was demonstrated to the example for embodiment, this invention is not limited to these, It can change suitably.

  For example, in the above embodiment, the umbrella portion 40 is deformed from the first closed state to the open state and further deformed to the second closed state by elastic deformation of the resin. However, the present invention is not limited to such a configuration, and for example, the umbrella portion 40 may be configured from a member that does not elastically deform. For example, an umbrella part may be comprised from several board | plate materials, and each board | plate material may mutually be couple | bonded with hinges, and you may make it a shape as shown in FIG. At this time, for example, the spring may be deformed from the first closed state to the open state.

  Further, even when the umbrella portion 40 is made of a resin plate material as in the above-described embodiment, the fold line is not necessarily formed, and the resin plate material is not a regular polygon. Also good.

  Moreover, in the said embodiment, although the fixing | fixed part 20 was fixed to the lower water injection part 12 via the nozzle joint 50, the fixing | fixed part 20 may be fixed to the lower water injection part 12 directly. Therefore, the shape of the fixing portion in the above embodiment is merely an example, and can be changed as appropriate.

  As described above, according to the present invention, a rectifier that can be installed and removed without dismantling the tank and a liquid storage device using the rectifier are provided to store liquids other than the hot water storage system and water. It can be used in the field of liquid systems.

DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Rectifier 11 ... Tank main body 12 ... Lower water injection part 13 ... Upper water injection part 20 ... Fixed part 30 ... Middle stick part 40 ... Umbrella part 50 ... Nozzle joint 100 ... Liquid storage device

Claims (5)

A rectifier that rectifies liquid injected from a water injection part of a tank,
A fixing part fixed to the water injection part;
A middle rod portion having one end connected to the fixed portion and the other end positioned in the tank with the fixed portion fixed to the water injection portion;
An umbrella portion locked to the other end of the middle rod portion;
Have
The umbrella part is
A first closed state that closes to the one end portion side with respect to the other end portion by a force applied toward the middle rod portion;
When the force applied toward the middle rod portion is released, the middle rod portion and the umbrella portion are opened so as to have an acute angle; and
A force in a direction from the one end portion of the middle rod portion toward the other end portion is applied to the umbrella portion, so that the other end portion is closed to the side opposite to the one end portion side. A second closed state;
A rectifier characterized by being transformed into The umbrella part is made of resin,
The rectifier according to claim 1, wherein the umbrella portion is changed from a first closed state to an open state by an elastic force of the resin. 3. The umbrella portion is formed with a plurality of folds that radiate and center and alternately have mountain folds and valley folds centered on a portion locked to the other end. Rectifier described in. The umbrella portion is changed from the opened state to the second closed state by pulling out the middle rod portion with a predetermined force in a state where the umbrella portion is opened in the tank. The rectifier according to any one of 1 to 3. A tank having a water injection part;
A rectifier that rectifies liquid injected from the water injection unit;
With
The rectifier includes a fixed portion fixed to the water injection portion, one end portion connected to the fixed portion, and the other end portion in the tank with the fixed portion fixed to the water injection portion. A middle rod portion that is positioned, and an umbrella portion that is locked to the other end portion of the middle rod portion,
The umbrella part is
A first closed state that closes to the one end portion side with respect to the other end portion by a force applied toward the middle rod portion;
When the force applied toward the middle rod portion is released, the middle rod portion and the umbrella portion are opened so as to have an acute angle; and
A force in a direction from the one end portion of the middle rod portion toward the other end portion is applied to the umbrella portion, thereby closing the other end portion on the side opposite to the one end portion side. A second closed state;
The liquid storage device is characterized by being deformed.

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