KR102309692B1 - Water storage tank - Google Patents

Abstract

Start the water storage tank.
A water storage tank according to an embodiment of the present invention includes a tank body having a first outlet and a second outlet through which water flows; and provided inside the tank body so as to be connected to the first outlet, and the water flows in or out through the first outlet while water flows out or flows into the inside of the tank body through the second outlet. bladder; Including, the bladder is stable even when full of water and can be made so that back pressure does not act to the first outlet.

Description

Water storage tank {WATER STORAGE TANK}

The present invention relates to a water storage tank, and more particularly, even if the bladder provided in the tank body of the water storage tank is full of water, the bladder is stable and connected to the bladder so that water flows in and out, and is provided in the tank body It relates to a water storage tank that prevents back pressure from acting on the first outlet.

The water storage tank stores water, and may be used to store water treated in a water treatment device such as a water purifier and then provide it when a user desires.

In general, a water storage tank has a storage space inside which water is stored, and is connected to a water supply source and a storage space to be stored in a storage space where water is introduced and is connected to a water discharge member such as a cock or a faucet An outlet for discharging water stored in the storage space to the outside is provided.

In the water storage tank of this configuration, since the water stored in the storage space is discharged by the pressure according to the height difference, the discharge port is provided in the lower part of the water storage tank, or the discharge port is provided in the water storage tank so that the discharge port is connected to the lower part of the water storage tank Or, there was a restriction that the outlet should be provided at a position lower than the water level stored in the storage space.

In addition, there is a restriction that the water discharging member cannot be located higher than the water storage tank.

In order to solve this problem, a separate bladder connected to the water supply source and the water discharge member is provided inside the tank body of the water storage tank, so that the water from the water source is stored in the bladder and the water stored in the bladder is removed from the water discharge member. to be discharged to the outside through

Then, in order to discharge the water stored in the bladder to the outside, water from a water source connected to the bladder or water from another water source was supplied to the space between the inside of the tank body and the bladder. In addition, when water is stored in the bladder, the water in the space between the inside of the tank body and the bladder is discharged.

In addition, as water flows into and out of the bladder, the bladder's durability deteriorates in the process of changing the volume of the bladder.

The present invention has been made in recognition of at least one of the needs or problems occurring in the prior art as described above.

One aspect of the object of the present invention is that even when the bladder provided inside the tank body of the water storage tank is full of water, the bladder is stable and connected to the bladder so that water flows in and out, and at the first outlet provided in the tank body. to prevent back pressure from acting.

Another aspect of the object of the present invention is that when the bladder is full of water, among the surfaces of the bladder, except for the surface on the side of the second outlet provided in the tank body so that water flows into and out of the tank body, the remaining surfaces are of the tank body. This is to ensure that it adheres to the inside without being expanded.

Another aspect of the object of the present invention is that the bladder has a shape corresponding to the inner shape of the tank body, and the outer diameter of the bladder is larger than the inner diameter of the tank body.

Another aspect of the object of the present invention is to allow water to easily flow into the tank body through the second outlet.

A water storage tank related to an embodiment for realizing at least one of the above problems may include the following features.

A water storage tank according to an embodiment of the present invention includes: a tank body provided with a first outlet and a second outlet through which water flows; and a bladder provided inside the tank body so as to be connected to the first outlet and through which water flows in or out through the first outlet while water flows out or flows into the inside of the tank body through the second outlet; Including, the bladder is stable even when full of water and can be made so that back pressure does not act to the first outlet.

In this case, the bladder may have a shape corresponding to the internal shape of the tank body.

In addition, when the bladder is full of water, the remaining surfaces of the bladder, except for the surface on the side of the second outlet, may be in close contact with the inside of the tank body without being expanded.

In addition, the outer diameter of the bladder may be greater than the inner diameter of the tank body.

In addition, the outer diameter of the bladder may be 0mm to 1.2mm larger than the inner diameter of the tank body.

In addition, the surface of the bladder on the side of the second outlet may be spaced apart from the inside of the tank body by a predetermined distance.

In addition, the interval may be 0.5mm to 1.5mm.

In addition, the surface on the side of the second outlet of the bladder may be an upper surface of the bladder.

In addition, a spacer protrusion may be formed in a portion inside the tank body around the second outlet.

As described above, according to the embodiment of the present invention, the bladder provided inside the tank body of the water storage tank has a shape corresponding to the inside shape of the tank body, and the outer diameter of the bladder may be larger than the inner diameter of the tank body.

In addition, according to an embodiment of the present invention, when the bladder is full of water, among the surfaces of the bladder, the remaining surface is the tank except for the surface on the side of the second outlet provided in the tank body so that water flows into and out of the tank body. It can be closely adhered to the inside of the body without being expanded.

And, according to the embodiment of the present invention, even if the bladder is full of water, the bladder is stable and connected to the bladder so that water flows in and out, and counter pressure does not act on the first outlet provided in the tank body. have.

And, according to an embodiment of the present invention, water can be easily introduced into the tank body through the second outlet.

1 is a perspective view of a water storage tank according to an embodiment of the present invention.
2 is an exploded perspective view of a water storage tank according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 1;
Fig. 4 is a cross-sectional view of only the tank body in Fig. 3;
5 is a bottom view of the tank body of the water storage tank according to an embodiment of the present invention and a view showing a portion of the water treatment device to which the tank body is assembled.
Fig. 6 is a cross-sectional view of only the bladder in Fig. 3;
7 to 10 are partially cutaway views showing the operation of the water storage tank according to an embodiment of the present invention.
11 to 13 are schematic views showing a method of manufacturing a bladder of a water storage tank according to an embodiment of the present invention.
14 and 15 are views illustrating a water pipe diagram of a water treatment device using a water storage tank according to an embodiment of the present invention and an operation thereof.

In order to help understanding of the features of the present invention as described above, a water storage tank related to an embodiment of the present invention will be described in more detail below.

The embodiments described below will be described on the basis of the most suitable embodiments for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments. It is to illustrate that the present invention can be implemented as in the following embodiments. Accordingly, the present invention is capable of various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will fall within the technical scope of the present invention. And, in the reference numerals shown in the accompanying drawings to help the understanding of the embodiments to be described below, related components among components that perform the same operation in each embodiment are indicated by the same or extended numbers.

Hereinafter, a water storage tank according to an embodiment of the present invention will be described with reference to FIGS. 1 to 13 .

1 is a perspective view of a water storage tank according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a water storage tank according to an embodiment of the present invention.

In addition, Figure 3 is a cross-sectional view taken along line A-A' in Figure 1, Figure 4 is a cross-sectional view of only the tank body in Figure 3, Figure 5 is a bottom surface of the tank body of the water storage tank according to an embodiment of the present invention. It is a view showing a part of the water treatment device to which the tile and tank body are assembled, and FIG. 6 is a cross-sectional view of only the bladder in FIG.

7 to 10 are partially cutaway views showing the operation of the water storage tank according to an embodiment of the present invention, and FIGS. 11 to 13 are the manufacture of the bladder of the water storage tank according to an embodiment of the present invention. It is a schematic diagram showing the method.

The water storage tank 100 according to an embodiment of the present invention may include a tank body 200 and a bladder 300 .

tank body

The tank body 200 may be provided with a first outlet 211 and a second outlet 212 . As shown in FIGS. 7 to 10 , water may flow in and out through the first outlet 211 and the second outlet 212 .

The first outlet 211 may be connected to the bladder 300 . Accordingly, water may be introduced and stored in the bladder 300 through the first outlet 211 , or water stored in the bladder 300 may flow out through the first outlet 211 .

In addition, water may flow into the inside of the tank body 200 through the second outlet 212 , or water inside the tank body 200 may flow out through the second outlet 212 .

And, as the water inside the tank body 200 flows out through the second outlet 212 as shown in FIG. 7 , water can be introduced into the bladder 300 through the first outlet 211 . have. In addition, as water flows into the tank body 200 through the second outlet 212 as shown in FIGS. 9 and 10 , the water stored in the bladder 300 passes through the first outlet 211 . can be leaked through.

The tank body 200 may have a substantially cylindrical shape as shown in FIG. 1 . However, the shape of the tank body 200 is not particularly limited and any shape is possible.

2 to 4 , the tank body 200 may include an upper body 210 and a lower body 220 .

The upper body 210 may be provided with the first outlet 211 and the second outlet 212 described above. The first outlet 211 and the second outlet 212 may be provided on the upper surface of the upper body 210 .

However, the location of the first outlet 211 or the second outlet 212 is not particularly limited, and may be provided anywhere in the upper body 210 . In addition, the first outlet 211 or the second outlet 212 may be provided in the lower body 220 .

A fusion groove 213 may be formed at the lower end of the upper body 210 as shown in FIG. 4 . A fusion protrusion 221 to be described later of the lower body 220 may be inserted into the fusion groove 213 of the upper body 210 as shown. In addition, the fusion grooves 213 of the upper body 210 may be fused to the fusion protrusions 221 of the lower body 220 by, for example, rotational fusion, and may be connected to each other.

The lower body 220 may be connected to the upper body 210 so as to cover the open lower portion of the upper body 210 . The lower body 220 may be connected to the upper body 210 by fusion such as rotational fusion as described above. To this end, a fusion protrusion 221 inserted into the fusion groove 213 of the upper body 210 may be formed at the upper end of the lower body 220 .

In addition, as shown in FIGS. 2 and 4 , a burr bump 222 may be formed at the upper end of the lower body 220 . It is possible to prevent the fusion burr (BR) generated during fusion by the burr bump 222 from being exposed inside the tank body 200 .

That is, even if a fusion burr (BR) occurs at a portion where the fusion groove 213 of the upper body 210 and the fusion protrusion 221 of the lower body 220 are fused, the generated fusion burr BR is a burr bump. (222) may not be exceeded.

Accordingly, the bladder 300 may not be damaged by the fusion burr BR with a sharp tip.

To this end, the burr bump 222 may be formed on the inside of the fusion protrusion 221 as shown in FIGS. 2 and 4 . And, between the burr bump 222 and the fusion protrusion 221 , a portion of the lower end of the upper body 210 , that is, an inner part of the part forming the fusion groove 213 may be inserted.

Accordingly, the burr bump 222 may wrap the inner side of the lower end of the upper body 210 .

In addition, the burr bump 220 may extend upwards higher than the fusion protrusion 221 . And, the surface of the burr bump 222 facing the lower end of the upper body 210 may be made of a stepped surface. Such a step surface may be formed such that the space between the upper body 210 and the lower end of the upper body 210 increases.

Accordingly, even if the fusion burr (BR) is generated and grown, it can be rolled up in a space between the step surface of the burr bump 222 and the lower end of the upper body 210 . Therefore, the fusion burr BR may not be exposed to the inside of the tank body 200 beyond the burr bump 222 .

A plurality of first connection holes 223 may be provided in the lower body 220 at a predetermined angle as shown in FIG. 5A . For example, as shown, ten first connection holes 223 may be provided at intervals of 36°.

However, the number of the first connection holes 223 formed in the lower body 220 or the angles they make with each other are not particularly limited, and any number or angle is possible.

In addition, if the water storage tank 100 according to the present invention is used in a water treatment device 10 such as a water purifier, the housing 20 of the water treatment device 10 has a first connection as shown in FIG. 5 ( b ). A plurality of arc-shaped second connection holes 21 corresponding to the holes 223 may be provided at a predetermined angle.

Thereby, the bolt or the like passes through the second connection hole 21 of the housing 20 and is fastened to the first connection hole 223 of the lower body 220, so that the water storage tank ( 100 may be stably coupled to the housing 20 of the water treatment device 10 .

In this case, the number of the second connection holes 21 may be half of the number of the first connection holes 221 . In addition, the central angle of the arc-shaped second connection hole 21 may be 1 to 1.5 times the angle between the first connection hole 223 and each other.

Accordingly, when the water storage tank 100 according to the present invention is located in the portion of the housing 20 of the water treatment device 10 in which the second connection hole 21 is formed, the arc-shaped second connection hole ( 21 ) may communicate with at least one first connection hole 223 .

Therefore, the position of the water storage tank 100 is adjusted so that the first connection hole 223 of the water storage tank 100 and the second connection hole 21 of the housing 20 of the water treatment device 10 communicate with each other. The time required for adjustment can be saved.

Accordingly, one embodiment of the water storage tank 100 according to the present invention can be easily coupled to the housing 20 of the water treatment device 10 .

On the other hand, when the central angle of the arc-shaped second connection hole 21 is less than 1 times the angle between the first connection hole 223 and each other, at least one of the second connection hole 21 is for the first connection It cannot communicate with the hole 223 .

In addition, when the central angle of the arc-shaped second connection hole 21 exceeds 1.5 times the angle between the first connection hole 223 and each other, the two second connection holes 21 are formed for the first connection It may communicate with the hole 223 or the second connection hole 21 may be connected to each other.

Therefore, the central angle of the arc-shaped second connection hole 21 through which the second connection hole 21 can communicate with the at least one first connection hole 223 is the first connection hole 223 . 1 to 1.5 times the angle formed with each other is preferable.

bladder

The bladder 300 may be provided inside the tank body 200 . In addition, the bladder 300 may be connected to the first outlet 211 of the tank body 200 .

As described above and shown in FIG. 7 , the bladder 300 closes the first outlet 211 while the water inside the tank body 200 flows out through the second outlet 212 of the tank body 200 . Water may flow in and be stored.

In addition, as water flows into the tank body 200 through the second outlet 212 of the tank body 200 as described above and shown in FIGS. 9 and 10 , the water is introduced through the first outlet 211 through the The water stored in the 300 may flow out.

The bladder 300 is stable even when full of water and may be formed so that no back pressure acts on the first outlet 211 .

The bladder 300 may have a shape corresponding to the internal shape of the tank body 200 . For example, as shown in FIG. 2 , in one embodiment of the water storage tank 100 according to the present invention, the inner shape of the tank body 200 may be approximately cylindrical. Accordingly, the shape of the bladder 300 may also be approximately cylindrical.

However, the shape of the bladder 300 is not particularly limited, and any shape is possible as long as it corresponds to the internal shape of the tank body 200 .

On the other hand, when the bladder 300 is filled with water as shown in FIG. 8 , the remaining surface of the bladder 300 except for the surface on the side of the second outlet 212 side of the tank body 200 is the tank. It can be closely adhered to the inside of the body 200 without being expanded.

To this end, the outer diameter D2 of the bladder 300 may be greater than the inner diameter D1 of the tank body 200 or may be the same as the inner diameter D1 of the tank body 200 . Accordingly, as shown in FIG. 8 , when the bladder 300 is filled with water, the remaining surface of the bladder 300 except for the surface on the side of the second outlet 212 of the tank body 200 is the tank. It can be closely adhered to the inside of the body 200 without being expanded.

The outer diameter D2 of the bladder 300 may be 0mm to 1.2mm larger than the inner diameter D1 of the tank body 200 .

If the outer diameter D2 of the bladder 300 is smaller than the inner diameter D1 of the tank body 200, when the bladder 300 is filled with water, the bladder 300 may expand and be damaged.

And, if the outer diameter (D2) of the bladder 300 is larger than the inner diameter (D1) of the tank body 200 by more than 1.2 mm, the insertion of the bladder 300 into the tank body 200 is not easy. can Also, the filling of the bladder 300 with water may be hindered by the tank body 200 .

With this configuration, even when the bladder 300 is filled with water as shown in FIG. 8 , the pressure in the bladder 300 is applied to the bladder 300 through the first outlet 211 of the tank body 200 . ) cannot be increased more than the supply pressure of the water supplied to the

Therefore, the bladder 300 may not be damaged by the internal pressure, so it is stable, and the back pressure may not act to the first outlet 211 of the tank body 200 connected to the bladder 300 .

The surface of the bladder 300 on the side of the second outlet 212 may be spaced apart from the inside of the tank body 200 by a predetermined distance (G). Accordingly, even when the bladder 300 is full of water, water can easily flow into the tank body 200 through the second outlet 212 of the tank body 200 . Therefore, the water stored in the bladder 300 can easily flow out through the first outlet 211 of the tank body 200 .

The gap (G) between the surface of the bladder 300 on the second outlet 212 side and the inside of the tank body 200 may be 0.5 mm to 1.5 mm.

If the gap (G) between the surface of the second outlet 212 side of the bladder 300 and the inside of the tank body 200 is less than 0.5 mm, the second When water is introduced into the tank body 200 through the outlet 212, the incoming water cannot provide sufficient pressure to contract the bladder 300, so the water inside the bladder 300 is It can be difficult to leak to the outside.

In addition, if the gap (G) between the surface of the second outlet 212 side of the bladder 300 and the inside of the tank body 200 exceeds 1.5 mm, the bladder 300 is shown in FIG. As shown, when the water is full, the bladder 300 expands through the gap G so that the internal pressure of the bladder 300 is transferred to the bladder 300 through the first outlet 211 of the tank body 200. It may rise above the supply pressure of the supplied water.

Therefore, as shown in FIG. 8, when the bladder 300 is filled with water, water easily flows into the tank body 200 through the second outlet 212 of the tank body 200 while The gap (G) between the surface of the second outlet 212 side of the bladder 300 and the inside of the tank body 200, which may not expand the bladder 300, is preferably between 0.5 mm and 1.5 mm. do.

In the water storage tank 100 according to an embodiment of the present invention, the second outlet 212 is provided on the upper surface of the upper body 210 of the tank body 200 . Therefore, the surface on the side of the second outlet 221 of the bladder 300 may be the upper surface of the bladder 300 .

However, the surface of the bladder 300 on the side of the second outlet 221 is not limited to the upper surface of the bladder 300 , and the side surface of the bladder 300 depends on the location of the second outlet 221 . Any aspect is possible.

In addition, as shown in FIG. 4 , a spacer protrusion 212a may be formed in the inner portion of the tank body 200 around the second outlet 212 . Accordingly, a gap may be formed between the bladder 300 and the inner portion of the tank body 200 around the second outlet 212 . And, even if the bladder 300 is full of water, water can easily flow into the tank body 200 through the second outlet 212 .

Meanwhile, a pole member 400 may be provided inside the bladder 300 as shown in FIGS. 3 and 6 . As such, when the pole member 400 is provided inside the bladder 300 , the bladder 300 can be easily provided inside the tank body 200 .

That is, when the user holds the bladder 300 , the pawl member 400 is held together, so that the user can more easily hold the bladder 300 .

Therefore, in a state in which the lower body 220 of the tank body 200 is separated from the upper body 210, the bladder 300 is inserted into the upper body 210 through the open lower part of the upper body 210. It can be easily inserted. In addition, the bladder 300 can be easily connected to the upper body 210 in a state where it is located inside the upper body 210 .

In addition, as shown in FIGS. 9 and 10, when the water stored in the bladder 300 flows out through the first outlet 211 of the tank body 200, the inside of the bladder 300 becomes a vacuum and the bladder The bladder 300 may be folded while the internal volume of the bladder 300 is reduced.

In this case, the bladder 300 may be folded around the pole member 400 . Accordingly, the bladder 300 may be folded in a relatively uniform pattern, and wrinkles occurring in the bladder 300 when the bladder 300 is folded may also occur in a relatively uniform pattern. For example, longitudinal wrinkles may occur in parallel to the side surface of the bladder 300 .

In addition, as the thickness of the lower surface of the bladder 300 is thick, as shown in FIG. 10 , when water from the bladder 300 is discharged to some extent, the lower surface 300a of the bladder 300 maintains its shape while maintaining the bladder ( 300), it is possible to form wrinkles of a certain pattern.

Therefore, when the volume inside the bladder 300 is reduced, the bladder 300 intersects each other. The occurrence of wrinkles can be minimized. In particular, wrinkles that cross each other may hardly occur on the side surfaces of the bladder 300 .

The portion of the bladder 300 where the wrinkles intersect is less durable than other portions of the bladder 300 . And, when the bladder 300 is repeatedly unfolded and folded according to the inflow and outflow of water into and out of the bladder 300, the intersecting portion of the wrinkles generated in the bladder 300 is broken first, so that the bladder 300 can be easily damaged. have.

However, when the pole member 400 is provided in the bladder 300 , as described above, the occurrence of wrinkles intersecting each other in the bladder 300 is minimized, and wrinkles intersecting each other are formed on the side surface of the bladder 300 . It may almost never happen. Therefore, in this case, even if the bladder 300 is repeatedly unfolded and folded, the bladder 300 may not be easily damaged. Also, durability of the bladder 300 may be improved.

As shown in FIGS. 2 and 6 , a connection part 310 connected to the first outlet 211 of the tank body 200 may be formed in the bladder 300 . And, as shown in FIG. 3 , one end of the pole member 400 may be connected to the connection part 310 of the bladder 300 .

To this end, one end of the pole member 400 may be inserted into the connection hole 311 formed in the connection part 310 , and the outer periphery of the connection part 310 may be tightened by the tightening member 420 . Accordingly, while one end of the pole member 400 is connected to the connection part 310 , a space between one end of the pole member 400 and the connection hole 311 may be sealed by the connection part 310 .

The configuration of the tightening member 420 is not particularly limited, and in a state where one end of the pole member 400 is inserted into the connection hole 311 of the connection part 310, any configuration that can tighten the outer periphery of the connection part 310 configuration is also possible.

The connection part 310 of the bladder 300 may be formed on the bladder 300 . In addition, the pole member 400 may extend from the connecting portion 310 to a lower portion of the central portion of the bladder 300 . Accordingly, the user can easily hold the pawl member 400 together with the bladder 300 .

The pole member 400 may be sealedly connected to the first outlet 211 of the tank body 200 by the fitting member 430 . To this end, a sealing member 440 such as an O-ring may be provided between the fitting member 430 and one end of the pole member 400 .

Accordingly, the bladder 300 together with the pole member 400 can be easily connected to the first outlet 211 of the tank body 200 .

The configuration of the fitting member 430 is not particularly limited, and any configuration is possible as long as the configuration allows the pole member 400 to be sealedly connected to the first outlet 211 of the tank body 200 .

2 and 6, the pole member 400 may have a communication hole 410 communicating with the first outlet 211 of the tank body 200 and the inside of the bladder 300 may be formed. . Accordingly, water may be introduced into the bladder 300 through the first outlet 211 and the communication hole 410 of the pole member 400 . In addition, the water stored in the bladder 300 may flow out through the communication hole 410 and the first outlet 211 of the pole member 400 .

On the other hand, the thickness T1 of the lower surface of the bladder 300 may be thicker than the thickness T2 of the upper surface and the thickness T3 of the side surface.

Accordingly, when the water stored in the bladder 300 flows out through the first outlet 211 of the tank body 200, the lower surface of the bladder 300 itself is not folded, so wrinkles may not occur. However, as shown in FIG. 10 , the entire lower surface 300a of the bladder 300 may only be superimposed on the side surface of the bladder 300 by folding the side surface of the bladder 300 .

Therefore, it is possible to reduce the occurrence of wrinkles that intersect while being folded in different shapes by repeatedly forming wrinkles of a certain shape in the bladder 300, thereby preventing the bladder 300 from being damaged by the wrinkles. .

In addition, when water is introduced through the first outlet 211 of the tank body 200 and stored in the bladder 300 , the lower surface of the bladder 300 can be unfolded from the side of the bladder 300 first. have. Then, thereafter, the bladder 300 may be spread out in a substantially cylindrical shape based on the lower surface of the bladder 300 .

Accordingly, since the bladder 300 is folded and unfolded in a relatively constant pattern to reduce the occurrence of wrinkles, it is possible to prevent the bladder 300 from being damaged by the wrinkles.

Also, the thickness T2 of the upper surface of the bladder 300 may be thicker than the thickness T3 of the side surface of the bladder 300 .

Accordingly, when the water stored in the bladder 300 flows out through the first outlet 211 of the tank body 200, it can be folded from the side of the bladder 300 as shown in FIG. . Even by this, the bladder 300 may be folded in a relatively constant pattern without being irregularly folded. That is, the occurrence of wrinkles intersecting each other in the bladder 300 can be minimized. And, the occurrence of wrinkles in the bladder 300 can be reduced.

Therefore, it is possible to prevent the bladder 300 from being damaged by the wrinkles. That is, even if the bladder 300 is repeatedly unfolded and folded, the bladder 300 may not be easily damaged. Also, durability of the bladder 300 may be improved.

The bladder 300 may be cylindrical. However, the shape of the bladder 300 is not particularly limited, and corresponds to the internal shape of the tank body 200 as described above, and water is introduced by the outflow of water from the inside of the tank body 200 or the tank body 200 ) Any shape is possible as long as the shape allows water to flow out by the inflow of water into the interior.

The bladder 300 may be made of polyolefin elastomer. Polyolefin elastomer has superior elasticity and fatigue failure compared to polyethylene (Poly Ethylene). Accordingly, even if the bladder 300 is repeatedly folded and unfolded by the inflow and outflow of water, damage to the bladder 300 can be minimized. That is, durability of the bladder 300 may be improved.

However, the material constituting the bladder 300 is not particularly limited, and any material may be used as long as the durability of the bladder 300 can be improved.

The bladder 300 may be manufactured by blow molding. Accordingly, the thickness T1 of the lower surface of the bladder 300 is the thickest, the thickness T3 of the side surface is the thinnest, and the thickness T2 of the upper surface is the difference between the thickness T1 of the lower surface and the thickness T3 of the side surface. The bladder 300 may be manufactured as much as possible.

bladder Manufacturing method

As such, the method of manufacturing the bladder 300 by blow molding includes a material mounting step (S100), a material fixing step (S200), and a bladder molding step (S300) as shown in FIGS. 11 to 13 . may include

In the material mounting step ( S100 ), the bladder material (BM) may be mounted on the mold (M). For example, as shown in FIG. 11, the bladder material BM can be mounted between the molds M removed.

The bladder material BM may have a cylindrical shape with at least one side open. Accordingly, air may be blown into the bladder material BM through the open side of the bladder material BM in the bladder forming step S300 .

However, the shape of the bladder material BM is not particularly limited, and any shape is possible as long as it can blow air into the bladder material BM in the bladder forming step S300 .

In addition, the bladder material BM may be formed of a polyolefin elastomer. However, the bladder material BM is not particularly limited, and any material may be used as long as the durability of the bladder 300 made of the bladder material BM can be improved.

In the material fixing step (S200), the bladder material (BM) may be fixed to the mold (M). For example, as shown in FIG. 12 , the bladder material BM may be fixed to the mold M by coupling the separated mold M. FIG.

The bladder material (BM) may be fixed to the mold (M) on the opposite side of the side to which air is blown in the blow molding step (S300).

In the bladder forming step ( S300 ), the bladder 300 may be formed by blowing air into the bladder material BM. To this end, in the bladder forming step (S300), hot air may be blown into the bladder material BM.

Accordingly, the bladder material BM may be moved in the mold M as shown in FIG. 13 while being melted. In addition, the molten bladder material BM may be molded into the bladder 300 by being in close contact with the surface of the mold M by air.

On the other hand, the molten bladder material BM may move relatively much to the side opposite to the side to which the air is blown. Accordingly, the thickness T1 of the lower surface of the bladder 300 to be formed may be thicker than the thickness T2 of the upper surface and the thickness T3 of the side surface. In addition, since more air may be applied to the side surface of the bladder material BM than the other side of the bladder material BM, the thickness T2 of the upper surface of the bladder 300 is thicker than the thickness T3 of the side surface. can

water treatment equipment - of water storage tank usage example

Hereinafter, the water storage tank 100 according to an embodiment of the present invention will be briefly described with reference to FIGS. 14 and 15 to be used in the repair apparatus 10 such as a water purifier.

14 and 15 are views illustrating a water pipe diagram of a water treatment device using a water storage tank according to an embodiment of the present invention and an operation thereof.

The first outlet 211 of the embodiment of the water storage tank 100 according to the present invention may be connected to the purified water line LPW as shown in FIGS. 14 and 15 . In addition, the second outlet 212 of the water storage tank 100 may be connected to the outlet line LEI.

As shown in FIG. 14, when the water discharging member 50 is closed, the raw water flowing through the raw water line LRW is connected to each other by the connecting line LC, the first water filter 31 and the second water filter ( 32) and the third water filter 33 may be filtered to become purified water.

At this time, a first pressure reducing valve 73 is provided in the connection line LC connecting the first water filter 31 and the second water filter 32 to reduce the pressure of the raw water to a predetermined required pressure. have.

The purified water filtered by the third water filter 33 flows through the water purification line LPW and flows through the first outlet 211 of the water storage tank 100 to the bladder 300 of the water storage tank 100 . can be imported and stored.

The household water that is not filtered by the third water purification filter 30 may be drained through the drain line LD provided with the household water valve 75 .

In this case, the flow path switching valve 40 to which the connection discharge line (LCE), the discharge line (LE), the inflow line (LEI), the domestic water line (LLW) and the drain branch line (LDS) are connected is the inflow and outflow line (LEI) and the drain branch line LDS are connected.

Accordingly, as water is stored in the bladder 300 of the water storage tank 100 , the water stored in the tank body 200 of the water storage tank 100 , for example, household water, is connected to the outlet line LEI and the drain. It flows into the drain line LD through the branch line LDS and is drained.

At this time, the water for domestic use may flow through the second pressure reducing valve 74 provided in the inlet/outlet line LEI while being decompressed to a predetermined required pressure.

When the bladder 300 of the water storage tank 100 is filled with purified water, it is provided in the connection line LC connecting the second purified water filter 32 and the third purified water filter 33 and a pressure transmission line (LP). The automatic shutoff valve 60 connected to the discharge line LE is closed by

Accordingly, raw water does not flow into the third water purification filter 33 , and thus purified water does not flow into the bladder 300 of the water storage tank 100 .

In addition, a first check valve 71 and a second check valve 72 may be provided in the purified water line LPW.

On the other hand, as shown in FIG. 15 , when the water discharge member 50 is opened, the flow path switching valve 40 connects the domestic water line LLW and the inflow and outflow line LEI.

Accordingly, domestic water that has not been filtered by the third purified water filter 33 may be introduced into the tank body 200 through the domestic water line LLW, the inflow and outflow line LEI, and the second outlet 212 .

Then, the purified water stored in the bladder 300 of the water storage tank 100 flows out through the first outlet 211 and flows through the purified water line LPW, and then the purified water line LPW and the discharge line LE are connected to each other. It flows into the connected fourth water filter 34 .

The purified water filtered while passing through the fourth water filter 34 flows to the water discharge member 50 through the discharge line LE, the flow path switching valve 40 and the connection discharge line LCE. In addition, purified water may be discharged to the outside through the water discharging member 50 and supplied to the user.

However, the water storage tank 100 according to an embodiment of the present invention may be used in other devices in addition to the water treatment device 10 described above.

As described above, when the water storage tank according to the present invention is used, the bladder provided inside the tank body of the water storage tank has a shape corresponding to the inside shape of the tank body, and the outer diameter of the bladder can be larger than the inner diameter of the tank body. And, when the bladder is full of water, among the surfaces of the bladder, except for the surface on the side of the second outlet provided in the tank body so that water flows into and out of the tank body, the remaining surfaces are in close contact with the inside of the tank body without expansion. Even if the bladder is full of water, the bladder is stable and connected to the bladder so that water flows in and out, and it is possible to prevent back pressure from acting on the first inlet provided in the tank body, and the second outlet Through this, water can be easily introduced into the inside of the tank body.

In the water storage tank described above, the configuration of the above-described embodiment is not limitedly applicable, but all or part of each embodiment may be selectively combined so that various modifications may be made. .

10: water treatment device 20: housing
21: second connection hole 31: first water filter
32: second water filter 33: third water filter
34: fourth water filter 40: flow path switching valve
50: water discharge member 60: automatic shut-off valve
71: first check valve 72: second check valve
73: first pressure reducing valve 74: second pressure reducing valve
75: household water valve 100: water storage tank
200: tank body 210: upper body
211: first outlet 212: second outlet
212a: spacing projection 213: fusion groove
220: lower body 221: fusion protrusion
222: burr bump 223: first connection hole
300: bladder 300a: lower surface of the bladder
310: connection part 311: connection hole
400: pole member 410: communication hole
420: fastening member 430: fitting member
440: sealing member D1: inner diameter of the tank body
D2: Outer diameter of bladder G: Gap
T1 : Thickness of the bottom of the bladder T2 : Thickness of the top of the bladder
T2 : Thickness of the side of the bladder BR : Fusion burr
BM: bladder material M: mold
LRW : Raw water line LC : Connection line
LPW : Water purification line LE : Discharge line
LCE : Connected discharge line LLW : Household water line
LD : drain line LDS : drain branch line
LEI : Inlet/outlet line LP : Pressure transmission line

Claims (9)

a tank body having a first outlet and a second outlet through which water flows; and
It is provided inside the tank body so as to be connected to the first outlet, and water flows in or out through the first outlet while water flows out or flows into the inside of the tank body through the second outlet. more; includes,
The bladder has a shape corresponding to the internal shape of the tank body,
The outer diameter of the bladder is larger than the inner diameter of the tank body,
The surface on the side of the second outlet of the bladder is spaced apart from the inside of the tank body by a predetermined distance,
A water storage tank in which a spacer protrusion is formed in a portion inside the tank body around the second outlet. delete delete delete The water storage tank of claim 1, wherein an outer diameter of the bladder is greater than an inner diameter of the tank body by 0 mm to 1.2 mm. delete The water storage tank according to claim 1, wherein the interval is 0.5 mm to 1.5 mm. The water storage tank according to claim 1, wherein the surface of the bladder on the side of the second outlet is the upper surface of the bladder.
delete

Images