JP2023006008A - Pressurization tank - Google Patents

Abstract

To provide a hardly deformable pressurization tank.SOLUTION: A pressurization tank 200 connected to an air compressor, and internally housing liquid comprises: an upper wall part 310; a lower wall part 410; side wall parts (a first side wall part 320 and a second side wall part 420) continuous with the upper wall part 310 and the lower wall part 410; first reinforcing walls (a first upper reinforcing wall 350 and a first lower reinforcing wall 450) arranged in a space surrounded by the upper wall part 310, the lower wall part 410, and the side wall parts, and continuous with at least one of the upper wall part 310 and the lower wall part 410, and the side wall parts; and second reinforcing walls (a second upper reinforcing wall 360 and a second lower reinforcing wall 460) arranged in the space, continuous with at least one of the upper wall part 310 and the lower wall part 410, and the side wall parts, and connected to the first reinforcing walls.SELECTED DRAWING: Figure 3

Description

The present invention relates to pressurized tanks.

In recent years, a liquid stored in a pressurized tank is pressurized and supplied to a two-fluid nozzle, and compressed air is supplied to the two-fluid nozzle to mix the liquid and gas and atomize the liquid. A device is known (see, for example, Patent Document 1).

JP 2019-188290 A

By the way, in order to distribute the internal pressure of the pressurized tank evenly, a pressurized tank formed in a cylindrical shape may be employed in the spray device. However, if the cylinder-shaped pressurized tank is used, a surplus space is generated when the tank is mounted on the spray device, resulting in a decrease in space efficiency. On the other hand, it is also being considered to form the pressurized tank in a shape corresponding to the installation space of the pressurized tank in the spray device. For example, when the installation space is a rectangular parallelepiped space, the surplus space can be reduced by making the outer shape of the pressure tank also rectangular parallelepiped. However, in pressurized tanks other than cylindrical or spherical, the internal pressure is not evenly distributed, so stress concentration may deform the pressurized tank.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pressurized tank that is resistant to deformation.

A pressurized tank according to an aspect of the present invention is a pressurized tank that is connected to an air compressor and stores liquid therein, and comprises an upper wall portion, a lower wall portion, and the upper wall portion and the lower wall. a side wall portion continuous with the portion, and disposed in a space surrounded by the upper wall portion, the lower wall portion, and the side wall portions, and connected to at least one of the upper wall portion and the lower wall portion and the side wall portion; and a second reinforcing wall arranged in the space, continuous with at least one of the upper wall portion and the lower wall portion, and the side wall portion, and connected to the first reinforcing wall. have

ADVANTAGE OF THE INVENTION According to this invention, the pressurization tank which is hard to deform|transform can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows schematic structure of the spraying apparatus which concerns on embodiment. 1 is a perspective view showing a schematic configuration of a pressurized tank according to an embodiment; FIG. 1 is an exploded perspective view of a pressurized tank according to an embodiment as viewed from above; FIG. 1 is an exploded perspective view of a pressurized tank according to an embodiment as viewed from below; FIG. It is a top view which shows schematic structure of the 1st accommodating part which concerns on embodiment. FIG. 4 is a cross-sectional perspective view of the first accommodating portion, looking at a cut plane parallel to the XY plane including the VI-VI cut line in FIG. 3; It is a bottom view which shows schematic structure of the 2nd accommodating part which concerns on embodiment. FIG. 5 is a cross-sectional perspective view of the second accommodating portion, looking at a cut plane parallel to the XY plane including the VIII-VIII cut line of FIGS. 3 and 4; FIG. 11 is a bottom view showing a second accommodation portion according to Modification 1; FIG. 11 is a perspective view showing a schematic configuration of a pressurized tank 200B according to Modified Example 2;

EMBODIMENT OF THE INVENTION Below, embodiment of the pressurization tank which concerns on this invention is described in detail using drawing. It should be noted that each of the embodiments described below is a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement and connection of components, steps, order of steps, etc. shown in the following embodiments are examples and are not intended to limit the present invention.

It should be noted that the accompanying drawings and the following description are provided for a full understanding of the invention by those skilled in the art and are not intended to limit the claimed subject matter.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code|symbol is attached|subjected to substantially the same structure, and the overlapping description may be abbreviate|omitted or simplified.

In the following description and drawings, the direction in which the first housing portion and the second housing portion provided in the pressurized tank are arranged is the Z-axis direction, the lateral direction of the pressurized tank as viewed in the Z-axis direction is the X-axis direction, and the longitudinal direction is Define the Y-axis direction. These X-axis direction, Y-axis direction, and Z-axis direction are directions that cross each other (perpendicularly in this embodiment). Although the Z-axis direction may not be the vertical direction depending on the mode of use, the Z-axis direction will be described below for convenience of explanation.

In addition, in the following embodiments, expressions using "substantially" such as a substantially rectangular parallelepiped shape are used. For example, "substantially rectangular parallelepiped" means not only a perfect rectangular parallelepiped but also a substantially rectangular parallelepiped. That is, for example, it also means that a rectangular parallelepiped including some unevenness on the surface is also included. The same applies to expressions using other "abbreviations".

(Embodiment)
[Spraying device]
First, a spray device 100 having a pressurized tank according to an embodiment will be described. FIG. 1 is a perspective view showing a schematic configuration of a spray device 100 according to an embodiment. As shown in FIG. 1 , the spray device 100 includes a rectangular parallelepiped main body 110 and a spray unit 120 attached to the upper side surface of the main body 110 . The body portion 110 includes a pressurized tank 200 that stores a liquid such as water or a sterilizing liquid, and an air compressor (compressor: not shown) that communicates with the pressurized tank 200 and the spray unit 120 and serves as a pressurization source. , a control unit for controlling the air compressor, etc. The spray unit 120 is provided with a plurality of two-fluid nozzles 121 for mixing and spraying high-pressure air supplied from the air compressor and high-pressure liquid supplied from the pressurization tank 200 .

[Pressure tank]
Next, the pressurized tank 200 will be described in detail. FIG. 2 is a perspective view showing a schematic configuration of the pressurized tank 200 according to the embodiment. FIG. 3 is an exploded perspective view of the pressurized tank 200 according to the embodiment viewed from above. FIG. 4 is an exploded perspective view of the pressurized tank 200 according to the embodiment viewed from below.

As shown in FIGS. 2 to 4, the pressurized tank 200 has a substantially rectangular parallelepiped shape by assembling a first housing portion 300 and a second housing portion 400 . The first containing portion 300 forms the upper half of the pressurized tank 200 , and the second containing portion 400 forms the lower half of the pressurized tank 200 . The first housing portion 300 and the second housing portion 400 are made of a resin material such as PPS, for example.

[First containment unit]
Next, the first housing portion 300 will be described. FIG. 5 is a top view showing a schematic configuration of the first housing portion 300 according to the embodiment. FIG. 6 is a cross-sectional perspective view of the first accommodating portion 300, looking at a cut plane parallel to the XY plane including the VI-VI cut line in FIG.

As shown in FIGS. 2 to 6, the first accommodating portion 300 is formed in a bowl shape with an open bottom. Specifically, the first housing portion 300 has an upper wall portion 310 and a first side wall portion 320 that is continuous with the upper wall portion 310 . The first side wall portion 320 is an example of a side wall portion that continues downward over the entire circumference of the upper wall portion 310 . A first flange portion 321 is formed continuously over the entire circumference of the lower end portion of the first side wall portion 320 . A plurality of through holes 322 penetrating in the Z-axis direction are arranged in the first flange portion 321 at predetermined intervals in the circumferential direction.

The upper wall portion 310 is a wall portion that forms the top surface of the pressurized tank 200, and includes a supply port 311 to which liquid is supplied from the outside, a pair of sealing ports 312 and 313, and a pair of vent ports 314 and 315. is provided. The supply port 311 and the pair of sealing ports 312 and 313 are arranged in the center of the upper wall portion 310 in the X-axis direction so as to be arranged along the Y-axis direction. Specifically, the sealing port 312, the sealing port 313, and the supply port 311 are arranged in this order from the Y-axis negative direction.

The supply port 311 protrudes upward from the upper wall portion 310 in a cylindrical shape, and is detachably attached with a cap 330 (see FIG. 2). For example, a male screw is formed on the outer peripheral surface of the supply port 311, and a female screw formed on the inner peripheral surface of the cap 330 is screwed into the male screw. When liquid is supplied to the pressurized tank 200 , the operator removes the cap 330 and pours the liquid into the pressurized tank 200 from the supply port 311 .

A pair of sealing openings 312 and 313 protrude upward from the upper wall portion 310 in a cylindrical shape. Inside each of the pair of sealing openings 312 and 313 is a portion where a mold (protrusion in the mold) exists for forming a communication opening 370 (see FIG. 6, which will be described later) during injection molding. That is, the pair of sealing openings 312 and 313 become unnecessary openings after manufacturing. For this reason, the pair of sealing openings 312 and 313 are closed by enclosing the plug member 331 so as not to be removed.

The pair of vents 314 and 315 are arranged in the Y-axis minus direction from the sealing port 313, and are arranged in the X-axis direction so as to sandwich the sealing port 313 as viewed in the Y-axis direction. A pair of air vents 314 and 315 protrude upward from the upper wall 310 in a cylindrical shape, and are fitted with L-shaped one-touch joint pipes 340 (see FIG. 2). The one-touch joint pipe 340 is a member that can not only be connected to the vents 314 and 315 with a one-touch operation, but also can ensure airtightness with the vents 314 and 315 simply by attaching. In other words, no sealing tape or sealant is required to ensure airtightness. If fragments of the sealing tape or sealing agent enter the pressurized tank 200, the two-fluid nozzle 121 will be clogged. . A threaded joint pipe may be attached to the pair of vents 314 and 315 .

A one-touch joint pipe 340 attached to the vent 314 is connected to a pipe leading to an air compressor. In other words, the compressed air from the air compressor is supplied into the pressurized tank 200 through the air vent 314 . On the other hand, a one-touch joint pipe 340 attached to the vent 315 is connected to a pipe that is connected to a water level gauge for measuring the water level in the pressurized tank 200 . Therefore, the internal pressure of the water gauge is equalized with the internal pressure of the pressurized tank 200 .

Further, as shown in FIGS. 4 to 6, the first housing portion 300 is provided with a first upper reinforcing wall 350 and a plurality of second upper reinforcing walls 360. As shown in FIGS. The first upper reinforcing wall 350 is an example of a first reinforcing wall formed inside the first accommodating portion 300 so as to be continuous with the upper wall portion 310 and the first side wall portion 320 . The first upper reinforcing wall 350 is a plate-like wall portion that is arranged in the center of the first accommodation portion 300 in the X-axis direction and extends along the Y-axis direction. A substantially trapezoidal concave portion 351 is formed in the center portion in the Y-axis direction at the tip portion (lower end portion) of the first upper reinforcing wall 350 . Therefore, the first upper reinforcing wall 350 has the longest length (length in the Z-axis direction) from the upper wall portion 310 at both ends in the Y-axis direction. That is, the first upper reinforcing wall 350 has a shape in which the central portion in the Y-axis direction is scooped out.

A plurality of second upper reinforcing walls 360 are formed inside the first housing portion 300 so as to be continuous with the upper wall portion 310 and the first side wall portion 320 and to be connected to the first upper reinforcing wall 350 . It is an example of a reinforcing wall. The plurality of second upper reinforcing walls 360 are arranged at positions that divide the interior of the first housing portion 300 substantially equally in the Y-axis direction, and are flat wall portions extending along the X-axis direction. be. Therefore, the second upper reinforcing wall 360 and the first upper reinforcing wall 350 are arranged so as to intersect with each other when viewed from the bottom. A substantially trapezoidal concave portion 361 is formed in the center portion in the X-axis direction at the tip portion (lower end portion) of each second upper reinforcing wall 360 . Therefore, the second upper reinforcing wall 360 has the longest length (length in the Z-axis direction) from the upper wall portion 310 at both ends in the X-axis direction. That is, the second upper reinforcing wall 360 has a shape in which the central portion in the X-axis direction is scooped out.

At intersections P11, P12, and P13 between the second upper reinforcing walls 360 and the first upper reinforcing walls 350, the lower edges of the second upper reinforcing walls 360 and the first upper reinforcing walls 350 are flush with each other. (See Figure 4). Here, the sealing port 312 is arranged at a position centered on the intersection point P11, the sealing port 313 is arranged at a position centered on the intersection point P12, and the supply port 311 is arranged at a position centered on the intersection point P13. (see FIG. 5). Further, cutouts are formed in each of the second upper reinforcing wall 360 and the first upper reinforcing wall 350 near the upper wall portion 310 at the intersections P11, P12, and P13 (see FIG. 6). These notches form communication ports 370 that communicate a plurality of spaces separated by the second upper reinforcing wall 360 and the first upper reinforcing wall 350 . Since the communication port 370 is provided at each of the intersections P11, P12, and P13, a plurality of spaces separated by the second upper reinforcing wall 360 and the first upper reinforcing wall 350 can be communicated with each other. It is possible to equalize the internal pressure of the space.

[Second storage unit]
Next, the second housing portion 400 will be described. FIG. 7 is a bottom view showing a schematic configuration of the second housing portion 400 according to the embodiment. FIG. 8 is a cross-sectional perspective view of the second accommodating portion 400, looking at a cut plane parallel to the XY plane including the VIII-VIII cut line of FIGS. 3 and 4. FIG.

As shown in FIGS. 2 to 4, 7, and 8, the second housing portion 400 is formed in a bowl shape with an open top. Specifically, the second housing portion 400 has a lower wall portion 410 and a second side wall portion 420 continuous with the lower wall portion 410 . The second side wall portion 420 is an example of a side wall portion that continues upward over the entire circumference of the lower wall portion 410 . A second flange portion 421 is continuously formed on the upper end portion of the second side wall portion 420 over the entire circumference. A plurality of through holes 422 penetrating in the Z-axis direction are arranged in the second flange portion 421 at predetermined intervals in the circumferential direction. The second housing portion 400 and the first housing portion 300 are assembled by overlapping the second flange portion 421 with the first flange portion 321 and screwing nuts onto the bolts inserted through the through holes 322 , 422 . be done. An annular groove 423 continuous over the entire circumference is formed in the upper surface of the second flange portion 421 , and an O-ring (not shown) is fitted in the groove 423 . Since the O-ring is sandwiched between the first flange portion 321 and the second flange portion 421 and compressed, the seal between the first flange portion 321 and the second flange portion 421 is ensured.

The lower wall portion 410 is a wall portion forming the bottom surface of the pressurized tank 200, and includes a discharge port 411 through which the liquid is discharged, three sealing ports 412 to 414, and a fixing portion 490 fixed to the main body portion 110. is provided. The discharge port 411 and the three sealing ports 412 to 414 are arranged in the center of the lower wall portion 410 in the X-axis direction so as to be arranged along the Y-axis direction. Specifically, they are arranged in order of the sealing port 412, the discharge port 411, the sealing port 413, and the sealing port 414 from the Y-axis negative direction.

The discharge port 411 protrudes downward from the lower wall portion 410 in a cylindrical shape, and is attached with an L-shaped one-touch joint pipe (not shown). For this reason, the discharge port 411 does not require a sealing tape or a sealing agent for ensuring airtightness, so that clogging of the two-fluid nozzle 121 can be suppressed. A threaded joint pipe may be attached to the discharge port 411 .

Each of the sealing ports 412 to 414 protrudes downward from the lower wall portion 410 in a cylindrical shape. Inside each of the sealing ports 412 to 414 is a portion where a mold (protrusion in the mold) exists for forming a communication port 470 (described later; see FIG. 8) during injection molding. In other words, each of the sealing openings 412 to 414 becomes an unnecessary opening after manufacturing. For this reason, each of the sealing ports 412 to 414 is sealed with a plug member (not shown) so as not to be removed.

The fixing portion 490 protrudes downward from the lower wall portion 410 and is formed in an H shape as a whole when viewed from above. Specifically, the fixed portion 490 includes a pair of long portions 491 that are elongated in the Y-axis direction and spaced apart in the X-axis direction, and a pair of long portions 491 that extend in the X-axis direction. 491 and a connecting portion 492 that connects between them.

Further, the second housing portion 400 is provided with a first lower reinforcing wall 450 and a plurality of second lower reinforcing walls 460 . The first lower reinforcing wall 450 is an example of a first reinforcing wall formed inside the second housing part 400 so as to be continuous with the lower wall part 410 and the second side wall part 420 . The first lower reinforcing wall 450 is a flat plate-shaped wall portion that is arranged in the center of the second housing portion 400 in the X-axis direction and extends along the Y-axis direction. A substantially trapezoidal concave portion 451 is formed in the central portion in the Y-axis direction at the tip (upper end) of the first lower reinforcing wall 450 . Therefore, the first lower reinforcing wall 450 has the longest length (length in the Z-axis direction) from the lower wall portion 410 at both ends in the Y-axis direction. That is, the first lower reinforcing wall 450 has a shape in which the central portion in the Y-axis direction is scooped out.

A plurality of second lower reinforcing walls 460 are formed inside the second housing portion 400 so as to be continuous with the lower wall portion 410 and the second side wall portion 420 and to be connected to the first lower reinforcing wall 450 . This is an example of two reinforcing walls. The plurality of second lower reinforcing walls 460 are arranged at positions that divide the interior of the second housing portion 400 substantially equally in the Y-axis direction, and are flat wall portions extending along the X-axis direction. be. Therefore, the second lower reinforcing walls 460 and the first lower reinforcing walls 450 are arranged so as to cross each other when viewed from above. A substantially trapezoidal concave portion 461 is formed in the center portion in the X-axis direction at the tip portion (upper end portion) of each second lower reinforcing wall 460 . Therefore, the second lower reinforcing wall 460 has the longest length (length in the Z-axis direction) from the lower wall portion 410 at both ends in the X-axis direction. That is, the second lower reinforcing wall 460 has a shape in which the central portion in the X-axis direction is scooped out.

Among the intersection points P21, P22, P23, and P24 between the second lower reinforcing wall 460 and the first lower reinforcing wall 450, at the intersection points P22 and P23, the second lower reinforcing wall 460 and the first lower reinforcing wall 450 are formed flush with each other (see FIG. 3). On the other hand, at the intersection point P21 and the intersection point P24, the first lower reinforcing wall 450 protrudes upward from each second lower reinforcing wall 460 (see FIG. 3).

Here, the sealing port 412 is arranged at a position centered on the intersection point P21, the discharge port 411 is arranged at a position centered on the intersection point P22, and the sealing port 413 is arranged at a position centered on the intersection point P23. , and the sealing port 414 is arranged at a position centered on the intersection point P24 (see FIG. 7). In FIG. 7, the position where the supply port 311 is arranged is indicated by a chain double-dashed line. As shown in FIG. 7, the supply port 311 and the discharge port 411 are arranged at separated positions when viewed from above.

Further, notches are formed in each of the second lower reinforcing wall 460 and the first lower reinforcing wall 450 near the lower wall portion 410 at the intersections P21 to P24 (see FIG. 8). These notches form communication ports 470 that communicate a plurality of spaces separated by the second lower reinforcing wall 460 and the first lower reinforcing wall 450 . Since the communication port 470 is provided at each of the intersections P21 to P24, the plurality of spaces separated by the second lower reinforcing wall 460 and the first lower reinforcing wall 450 can be communicated. can be guided to the discharge port 411.

[Effects, etc.]
As described above, the pressurized tank according to the embodiment is the pressurized tank 200 that is connected to the air compressor and stores liquid therein. The pressurized tank 200 includes an upper wall portion 310, a lower wall portion 410, side wall portions (a first side wall portion 320 and a second side wall portion 420) continuous with the upper wall portion 310 and the lower wall portion 410, and an upper wall portion. 310, the lower wall portion 410 and the side wall portion, the first reinforcing wall (first upper reinforcing wall 350 and a first lower reinforcing wall 450), and a second reinforcing wall ( A second upper reinforcing wall 360 and a second lower reinforcing wall 460).

According to this, in the pressurized tank 200, at least one of the upper wall portion 310 and the lower wall portion 410 and at least one of the upper wall portion 310 and the lower wall portion 410 and at least one of the upper wall portion 310 and the lower wall portion 410 are provided. A second reinforcing wall that is continuous with the side wall is connected. Therefore, the first reinforcing wall and the second reinforcing wall reinforce at least one of the upper wall portion 310 and the lower wall portion 410 and the side wall portion. Since the internal pressure acting on the pressurized tank 200 is distributed not only to the upper wall portion 310, the lower wall portion 410, and the side wall portions, but also to the first reinforcing wall and the second reinforcing wall, the pressurized tank 200 is deformed. can be made difficult. As a result, the degree of freedom of the external shape of the pressurized tank 200 can be increased. For example, even if the pressurized tank 200 has an external shape corresponding to the installation space of the spray device 100, the deformation of the pressurized tank 200 can be prevented.

The first reinforcing wall (first upper reinforcing wall 350 and first lower reinforcing wall 450) and the second reinforcing wall (second upper reinforcing wall 360 and second lower reinforcing wall 460) are arranged to cross each other. ing.

According to this, since the first reinforcing wall and the second reinforcing wall intersect each other, the pressurized tank 200 can be reinforced more firmly. Therefore, the deformation of the pressurized tank 200 can be made more difficult.

Communicating holes 370 communicating a plurality of spaces partitioned by the first reinforcing wall and the second reinforcing wall at intersections P11, P12, P13, P21, P22, P23, and P24 of the first reinforcing wall and the second reinforcing wall. , 470 are formed.

According to this, a plurality of spaces partitioned by the first reinforcing wall and the second reinforcing wall are communicated with each of the communication ports 370 and 470 . For example, in the first housing portion 300, a plurality of spaces partitioned by the second upper reinforcing walls 360 and the first upper reinforcing walls 350 are communicated through the communication ports 370. It is possible to equalize the internal pressure. In addition, in the second housing portion 400, a plurality of spaces separated by the second lower reinforcing walls 460 and the first lower reinforcing walls 450 are communicated by the communication ports 470, so that the plurality of spaces Liquids can flow between them. In this way, even in the pressurized tank 200 that is difficult to deform due to the first reinforcing wall and the second reinforcing wall, the flowability of the gas and liquid can be ensured by the communication ports 370 and 470 .

The first upper reinforcing wall 350 is continuous with the upper wall portion 310 and the first side wall portion 320, the second upper reinforcing wall 360 is continuous with the upper wall portion 310 and the first side wall portion 320, and the upper wall A supply port 311 to which liquid is supplied from the outside is formed in the portion 310 , and the communication port 370 is provided in the supply port 311 .

According to this, since the communication port 370 is provided with the supply port 311, the communication port 370 and the supply port 311 can be formed by one projection in the mold during manufacturing. In other words, since the protrusions in the mold can be shared, the mold can be prevented from becoming complicated, and the manufacturing efficiency can be improved.

The first lower reinforcing wall 450 is continuous with the lower wall portion 410 and the second side wall portion 420, and the second lower reinforcing wall 460 is continuous with the lower wall portion 410 and the second side wall portion 420. A discharge port 411 through which liquid is discharged is formed in the wall portion 410 , and the communication port 470 is provided in the discharge port 411 .

According to this, since the communication port 470 is provided with the discharge port 411, the communication port 470 and the discharge port 411 can be formed by one projection in the mold during manufacturing. In other words, since the protrusions in the mold can be shared, the mold can be prevented from becoming complicated, and the manufacturing efficiency can be improved.

The upper wall portion 310 is formed with a supply port 311 through which liquid is supplied from the outside, and the lower wall portion 410 is formed with a discharge port 411 through which the liquid is discharged. 411 are arranged in a position apart from each other when viewed from the top.

Here, it is not preferable for a liquid such as hypochlorous acid water, whose concentration decreases over time, to remain in the pressurized tank 200 for a long period of time. For example, if the discharge port 411 is arranged directly below the supply port 311, the flow from the supply port 311 to the discharge port 411 will be simplified. In this case, the liquid at a location far from the discharge port 411 may remain in the pressurized tank 200 for a long period of time without being discharged. In this embodiment, since the supply port 311 and the discharge port 411 are arranged at positions separated from each other in top view, the path from the supply port 311 to the discharge port 411 becomes long, and the inside of the pressurized tank 200 is agitated. Currents can also occur. Therefore, it is possible to reduce the amount of liquid that stays for a long period of time.

At least one of the first reinforcing wall (first upper reinforcing wall 350, first lower reinforcing wall 450) and second reinforcing wall (second upper reinforcing wall 360, second lower reinforcing wall 460) has a recess 351 at the tip. , 361, 451, 461.

According to this, since each of the first reinforcing wall and the second reinforcing wall has the concave portions 351, 361, 451, 461 at the tip, the usage amount of the resin material can be suppressed, and the pressure tank can be The liquid capacity of 200 can also be increased.

The pressurized tank 200 includes an upper wall portion 310 and a first housing portion 300 having a part of the side wall portion (first side wall portion 320) continuous to the entire circumference of the upper wall portion 310, a lower wall portion 410 and the lower and a second housing portion 400 having a part of the side wall portion (second side wall portion 420) that continues around the entire circumference of the wall portion 410, and each of the first housing portion 300 and the second housing portion 400 has a first It has reinforcing walls (first upper reinforcing wall 350, first lower reinforcing wall 450) and second reinforcing walls (second upper reinforcing wall 360, second lower reinforcing wall 460).

According to this, since each of the first housing portion 300 and the second housing portion 400 has the first reinforcing wall and the second reinforcing wall, the first housing portion 300 and the second housing portion 400 are separated from each other. Each can be made difficult to deform. Therefore, the resistance to deformation of the pressurized tank 200 itself can be further enhanced.

(Modification)
Modifications of the above embodiment will be described below. In the following description, parts that are the same as those in the above-described embodiment are denoted by the same reference numerals, and description thereof may be omitted.

[Modification 1]
In the above embodiment, the case where the first reinforcing wall and the second reinforcing wall intersect is exemplified. However, the first reinforcing wall and the second reinforcing wall need only be joined without intersecting each other. FIG. 9 is a bottom view showing a second accommodation portion 400a according to Modification 1. As shown in FIG. FIG. 9 is a diagram corresponding to FIG. As shown in FIG. 9, the X-axis direction end of each second lower reinforcing wall 460a is joined to the first lower reinforcing wall 450 so as not to protrude. Specifically, each odd-numbered second lower reinforcing wall 460 a from the Y-axis negative direction is joined so that the end portion in the X-axis positive direction does not protrude into the first lower reinforcing wall 450 . Each even-numbered second lower reinforcing wall 460 a from the Y-axis negative direction is joined so that the end portion in the X-axis negative direction does not protrude into the first lower reinforcing wall 450 . In this case as well, the internal pressure acting on the second housing portion 400a is distributed not only to the lower wall portion 410 and the second side wall portion 420, but also to the first lower reinforcing wall 450 and the second lower reinforcing walls 460a. Therefore, deformation of the pressurized tank can be made difficult. Also in the first accommodating portion, the first upper reinforcing wall and the second upper reinforcing wall may be joined without intersecting each other.

[Modification 2]
In the above embodiment, the pressurized tank 200 having the first accommodating portion 300 and the second accommodating portion 400 was illustrated, but the pressurized tank may have at least one of the first accommodating portion and the second accommodating portion. Just do it. FIG. 10 is a perspective view showing a schematic configuration of a pressurized tank 200B according to Modification 2. As shown in FIG. FIG. 10 is a diagram corresponding to FIG.

As shown in FIG. 10, the pressurized tank 200B has a plate-like bottom cover 500b that closes the first container 300. As shown in FIG. The bottom lid 500b is an example of the lower wall. A flange portion 521b that is joined to the first flange portion 321 of the first housing portion 300 is formed along the entire circumference of the outer peripheral edge of the bottom lid 500b. Also, the bottom cover 500b is provided with a discharge port (not shown). In this case also, the internal pressure acting on the pressurized tank 200B is applied to the first upper reinforcing wall 350 and the second upper reinforcing wall in addition to the upper wall portion 310, the lower wall portion (bottom lid 500b) and the first side wall portion 320. 360, the deformation of the pressurized tank 200B can be made difficult.

(others)
As described above, the pressurized tank according to the present invention has been described based on the above embodiment, but the present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the substantially rectangular parallelepiped pressurization tank 200 was illustrated, but the pressurization tank may have any external shape. Other external shapes of the pressurized tank include, for example, a columnar shape, a spherical shape, and a polygonal columnar shape other than a square shape.

In the above-described embodiment, the first housing portion 300 and the second housing portion 400 are made of a resin material such as PPS. The material may form the first housing portion 300 and the second housing portion 400 .

The number of installation of the first upper reinforcing wall 350, the second upper reinforcing wall 360, the first lower reinforcing wall 450 and the second lower reinforcing wall 460 in the above-described embodiment is an example, and the number of installation of these can be any number. good. Moreover, although the first upper reinforcing wall 350 and the second upper reinforcing wall 360 are joined so as to be orthogonal, they may be joined at an angle other than orthogonal. The same applies to the first lower reinforcing wall 450 and the second lower reinforcing wall 460 .

In addition, forms obtained by applying various modifications to the embodiments and modifications that a person skilled in the art can think of, or realized by arbitrarily combining the constituent elements and functions in the embodiments without departing from the scope of the present invention. Also included in the present invention.

INDUSTRIAL APPLICABILITY The present invention can be widely used as a pressurized tank provided in, for example, a spray device.

100 spray device 110 main body 120 spray unit 121 two-fluid nozzles 200, 200B pressurized tank 300 first housing portion 310 upper wall portion 311 supply ports 312, 313, 412, 413, 414 sealing ports 314, 315 vent port 320 One side wall (side wall)
321 first flange portions 322, 422 through hole 330 cap 331 plug member 340 quick joint pipe 350 first upper reinforcing wall (first reinforcing wall)
351, 361, 451, 461 recess 360 second upper reinforcing wall (second reinforcing wall)
370, 470 Communication ports 400, 400a Second housing portion 410 Lower wall portion 411 Discharge port 420 Second side wall portion (side wall portion)
421 second flange portion 423 groove 450 first lower reinforcing wall (first reinforcing wall)
460, 460a second lower reinforcing wall (second reinforcing wall)
490 Fixed portion 491 Long portion 492 Connecting portion 500b Bottom lid (lower wall portion)
521b Flange P11, P12, P13, P21, P22, P23, P24 Intersection

Claims (8)

A pressurized tank connected to an air compressor and containing a liquid therein,
an upper wall;
a lower wall;
a side wall portion continuous with the upper wall portion and the lower wall portion;
a first reinforcing wall disposed in a space surrounded by the upper wall portion, the lower wall portion, and the side wall portion and continuing to at least one of the upper wall portion and the lower wall portion and the side wall portion;
A pressure tank arranged in the space, comprising at least one of the upper wall portion and the lower wall portion, and a second reinforcing wall continuous with the side wall portion and connected to the first reinforcing wall. The pressurized tank according to claim 1, wherein the first reinforcing wall and the second reinforcing wall are arranged so as to cross each other. 3. The communication port defined by the first reinforcing wall and the second reinforcing wall is formed at the intersection of the first reinforcing wall and the second reinforcing wall to communicate a plurality of spaces separated by the first reinforcing wall and the second reinforcing wall. pressurized tank. The first reinforcing wall is continuous with the upper wall portion and the side wall portion,
The second reinforcing wall is continuous with the upper wall portion and the side wall portion,
The upper wall portion is formed with a supply port through which the liquid is supplied from the outside,
The pressurized tank according to claim 3, wherein the communication port is provided in the supply port. The first reinforcing wall is continuous with the lower wall portion and the side wall portion,
The second reinforcing wall is continuous with the lower wall portion and the side wall portion,
The lower wall portion is formed with a discharge port through which the liquid is discharged,
The pressurized tank according to claim 3 or 4, wherein the communication port is provided in the discharge port. The upper wall portion is formed with a supply port through which the liquid is supplied from the outside,
The lower wall portion is formed with a discharge port through which the liquid is discharged,
The pressurized tank according to any one of claims 1 to 5, wherein the supply port and the discharge port are arranged at positions separated from each other when viewed from above. The pressurized tank according to any one of claims 1 to 6, wherein at least one of the first reinforcing wall and the second reinforcing wall has a concave portion at its tip. a first accommodating portion having the upper wall portion and a portion of the side wall portion continuous to the entire circumference of the upper wall portion;
a second housing portion having a portion of the side wall portion continuous to the bottom wall portion and the entire circumference of the bottom wall portion;
The pressurized tank according to any one of claims 1 to 7, wherein each of the first containing portion and the second containing portion has the first reinforcing wall and the second reinforcing wall.

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