JPH1014783A - Ejection port for pot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the disturbance of an ejection flow by providing a notch in a radial direction in the middle of a surface on the opposite side to the port front surface side of a downward pipe part and forming a guide part of a gutter shape reaching to the lower end of a downward pipe continuously to it. SOLUTION: The notch 9 of a depth which is the half of the pipe diameter is provided in the radial direction in the middle of the surface on the opposite side to the barrel 7 side of a pot of the downward pipe part 6, and the guide part 11 of a semicylindrical shape is formed in a range from the notch 9 to the lower end of the downward pipe part 6. A notch angle is appropriately selected in the range from 90 degrees to 270 degrees. By providing the notch, the flow F1 opened to atmosphere at this part is drawn to the side of the flow F2 of the guide part 11 by the action of the surface tension of fluid and the flows F1 and F2 are merged and separated and dropped from the ejection port 1 at a tip. The action is generated by deeply making the notch 9 in a direction perpendicular to the downward pipe part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge port of a pot provided with a bellows pump or an electric pump.

[0002]

2. Description of the Related Art In a conventional pot, a water supply passage is provided between a water supply port on the bottom of the inner container and a safety valve on the top of the pot, and a discharge pipe is connected to the outlet side of the safety valve. An outlet is provided. When a bellows type pump is used, it is provided above the pot, and the inside of the inner container is pressurized by the action of the pump to discharge the liquid from the discharge port.

[0003] When an electric pump is used, it is provided in the middle of the above-mentioned water supply passage, and its pumping action causes
The liquid is discharged from the discharge port in the same manner as described above.

[0004] As shown in FIG. 3, the conventional discharge port 1 has a bent portion 5 from the connection port 4 on the safety valve 3 side of the discharge pipe 2.
Is formed at the lower end of the downward pipe portion 6 bent downward through the above. The discharge port 1 is a circular opening cut in a direction perpendicular to the length direction of the downward pipe portion 6. In addition, reference numeral 7 denotes a body of the pot, and reference numeral 8 denotes an undercover of a discharge portion.

[0005]

DISCLOSURE OF THE INVENTION Discharge port 1 as described above
In the pot provided with, the discharge flow falling from the discharge port 1 is less turbulent in order to prevent scattering,
It is desirable to fall in a laminar flow.

However, in the case of a circular opening in which the tip of the downward panel portion 6 is cut in a right angle direction like the above-described discharge port 1, the flow is disturbed when leaving the discharge port 1, and a desired discharge flow cannot be obtained. Was.

[0007] The flow is disturbed when leaving the discharge port 1 because the flow is released to the atmosphere at the discharge port 1 and the pressure is reduced at a stretch, and the flow of liquid around the lower end of the downward pipe 6 is reduced. This is because surface tension acts.

In order to solve such a problem, a rectifying rib is provided inside the downward pipe portion 6 in the flow direction.
It is known that this prevents turbulence in the flow.

However, if such a rib is provided, there is an inconvenience that the obstruction plug cannot be inserted into the discharge port 1 because of the obstruction of the rib at the time of an air leak inspection performed at a factory before the product is shipped.

Accordingly, an object of the present invention is to suppress the disturbance of the discharge flow by a structure that does not hinder the air leak inspection.

[0011]

In order to achieve the above object, the present invention bends the distal end of the discharge pipe downward at a predetermined distance from the front surface of the pot, and downwardly extends from the bent portion. A pipe section is provided, and a radial cut is provided in the middle of the surface of the downward pipe section opposite to the front side of the pot at a discharge port of the pot configured to discharge the liquid inside the pot from the lower end of the downward pipe section. And a gutter-like guide portion which reaches the lower end of the downward pipe continuously to the cut.

In the pot having the above-described discharge port, of the discharge flow flowing through the downward pipe portion, the flow released from the cut portion to the outside is drawn to the flow flowing through the gutter-shaped guide portion. The arc length in the width direction of the gutter-shaped guide portion is shorter than the inner circumference of the downward pipe portion, so that the range of contact with the flow is narrower than that of the conventional discharge port. Therefore, the surface tension acting on the flow at the time of leaving the tip of the guide portion is also reduced. By these actions, the discharge flow falling from the tip of the guide portion is less turbulent.

The cutting angle θ of the above-mentioned cutting can be set in a range of 90 ° to 270 ° around the center line of the downward pipe portion. Is smaller than 90 degrees, the arc length in the width direction of the guide portion becomes longer, the surface tension when the flow separates from the discharge port becomes large, and the discharge flow is disturbed. If the angle is larger than 270 degrees, the arc length becomes small, and most of the flow is released to the atmosphere at the notch, and the discharge flow is disturbed due to the rapid pressure change and the surface tension at the notch. Is done.

It is also possible to adopt a configuration in which the side edges of the guide portion are inclined so that the length of the arc in the width direction of the guide portion becomes shorter toward the lower end. According to this configuration, the width of the leading end of the guide portion is reduced, so that the surface tension when the discharge flow is separated from the discharge port can be reduced.

Further, a configuration may be adopted in which a diagonal cut is provided on the surface of the downward pipe portion opposite to the front side of the pot, from the middle thereof to the lower end of the downward pipe.
According to this configuration, the discharge flow is drawn along the oblique cut and flows. Also, the surface tension at the time of separating from the tip becomes small.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the first embodiment shown in FIG. 1, the structure of the pot and the structure of discharging the liquid are the same as those of the conventional example shown in FIG. The difference lies in the structure of the discharge pipe 2. That is, a cut 9 having a half depth of the pipe diameter is provided radially in the middle of the surface of the downward pipe 6 opposite to the pot body 7 side, and the cut 9 extends from the cut 9 to the lower end of the downward pipe 6. A semi-cylindrical guide portion 11 is formed in the range. The lower end of the guide 11 is the discharge port 1.

In the illustrated case, the inner diameter S of the downward pipe 6 is 9 mm, and the length L of the guide 11 is 22.5 mm. The cut angle θ about the center line of the cut 9 is 180 degrees.

The above-mentioned cutting angle is appropriately selected in the range from θ ₁ (90 degrees) to θ ₂ (270 degrees) as shown in FIG. By providing the above notches 9, FIG.
(C), the flow F _1, which is open to the atmosphere at that portion, by the action of the surface tension of the liquid drawn into the flow F ₂ of the guide portion 11, are merged F ₁ and F ₂ is the tip Dropping away from the discharge port 1.

The above-mentioned action of drawing the flow F ₁ to the side of F ₂ occurs when the cut 9 is made deeper in a direction perpendicular to the downward pipe portion 6, as shown in FIG.
The same operation can be obtained even if the round portion 12 exists at the boundary between the cut 9 and the guide portion 11.

Further, when the flows F ₁ and F ₂ merge and leave the outlet 1 at the tip, the contact area of the flows is less than half the area of the conventional circular outlet. The effect of tension is also reduced. Further, when the both side edges of the guide portion 11 are inclined as shown in FIG. 1E, the arc length in the width direction becomes shorter toward the tip. For this reason, the contact area with the flow at the discharge port 1 is reduced, and the influence of the surface tension is further reduced.

In the second embodiment shown in FIG. 2, an oblique cut 13 is provided in a range from the middle to the lower end of the surface of the downward pipe 6 opposite to the side of the barrel 7 (see FIG. 1A). is there.

In this case, since the cut 9 as described above does not exist, the action of drawing the flow F ₁ to the side of F ₂ acts only gradually, but if the length L ′ of the oblique cut 13 is set appropriately long, A sufficient pulling action occurs. Further, in this case, the lower end of the oblique cut 13 becomes the discharge port 1 and the width of that portion is minimized, so that the influence of surface tension on the flow in this portion is also reduced.

[0023]

As described above, the discharge port of the pot according to the present invention is provided with a cut in the middle of the downward pipe portion of the discharge pipe, and the range from that portion to the lower end is formed as a gutter-shaped guide portion. In addition, it is possible to suppress the turbulence of the discharge flow falling from the tip of the guide portion, and to reduce scattering.

The same effect can be obtained when an oblique cut from the middle of the downward pipe portion to the lower end is formed.

In any of the above cases, there is no problem in closing the discharge port with the plug in the air leak test before shipping the product.

[Brief description of the drawings]

1A is a partial cross-sectional view of a first embodiment; FIG. 1B is an enlarged cross-sectional view of a guide unit according to the first embodiment; FIG. Another modification of the downward pipe section

FIG. 2A is a partial cross-sectional view of the second embodiment. FIG.

FIG. 3 is a partial sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Discharge port 2 Discharge pipe 3 Safety valve 4 Connection port 5 Bent part 6 Downward pipe part 7 Body 8 Under cover 9 Cut 11 Guide part 12 Round part 13 Diagonal cut

Claims (4)

[Claims] 1. A distal end of a discharge pipe is bent downward at a predetermined distance from a front surface of a pot, a downward pipe is provided below the bent portion, and a liquid inside the pot is provided from a lower end of the downward pipe. At the discharge port of the pot, which discharges water, a radial cut is provided in the middle of the surface of the downward pipe portion opposite to the front surface of the pot, and a gutter-like shape that reaches the lower end of the downward pipe continuously to the cut. A discharge port of a pot, wherein a guide portion of the pot is formed. 2. The outlet of a pot according to claim 1, wherein the cut angle θ of the cut is set in a range of 90 ° to 270 ° around a center line of the downward pipe portion. 3. The guide portion according to claim 1, wherein the guide portion is formed by inclining both side edges so that the arc length of the guide portion becomes shorter toward the lower end. The outlet of the pot. 4. A downwardly bent distal end of the discharge pipe at a predetermined distance from the front surface of the pot, and a downwardly directed pipe is provided below the bent portion. A discharge opening of the pot, wherein an oblique cut is provided from the middle of the surface of the downward pipe portion opposite to the front surface of the pot to the lower end of the downward pipe.