JPH04165103A - Accumulator - Google Patents

Abstract

PURPOSE:To prevent pressurized gas from being enclosed in a shell and simplify the structure of an accumulator by providing a spring for depressing a diaphragm toward a liquid chamber in the gas chamber of the diaphragm for partitioning the inside of the shell into the gas chamber and the liquid chamber. CONSTITUTION:A diaphragm 13 partitions the inside of a shell 11 into a gas chamber 12A and a liquid chamber 12B, wherein the inside of the shell 11 is provided with a shell cap body 11B having a shell main body 11A and a liquid entrance 11b4. A spring 14 is provided on the side of the liquid chamber 12A of the diaphragm 13 through a guarding member 15 to depress the diaphragm 13 to the side of the liquid chamber 12B. Subsequently, no pressure gas enclosure is required so that deterioration of the function by the transmission of pressurized gas is not caused to simplify the structure.

Description

Detailed Description of the Invention (11) Object of the Invention [Field of Industrial Application] The present invention relates to an accumulator, and in particular, the present invention relates to an accumulator that divides the internal space of a shell into a gas chamber and a liquid chamber by a diaphragm, and This invention relates to an accumulator provided with a spring for pressing a diaphragm.

[Prior Art] Conventionally, this type of accumulator has a gas chamber separated from the liquid chamber by a diaphragm or bladder, which is filled with pressurized gas to alleviate pressure fluctuations in the liquid applied to the liquid chamber. It was proposed that something would be done.

[Problems to be solved]- However, conventional accumulators have the disadvantage that pressurized gas must be sealed in the fil gas chamber, and (ii) a gas filling inlet is formed in the shell and a bladder is provided. There was a drawback that had to be done.

In addition, conventional accumulators have the disadvantage that when installed in water pipes in ordinary homes, they are (iii) large, making it difficult to secure installation space, and (1v) small. (V) The disadvantage is that the gas permeation of the diaphragm or bladder is accelerated and its functionality deteriorates in a short period of time.Furthermore, (V) the range of liquid pressure fluctuation is large, so the life of the diaphragm or bladder is shortened. There were drawbacks.

Therefore, in order to eliminate these drawbacks, the present invention divides the internal space of the shell into a gas chamber and a liquid chamber by a diaphragm, and provides a spring for pressing the diaphragm against the gas chamber. It is intended to provide an accumulator.

(2) Structure of the invention [Means for solving the problems] The means for solving the problems provided by the present invention are as follows:
A shell (11) formed with a liquid inlet/outlet (llb21) and a liquid inlet/outlet (12A+) are arranged inside the shell (11), and the internal space of the shell (11) is connected to a gas chamber (12A+) and a liquid inlet/outlet (12A+). 11) A diaphragm (13) that partitions the liquid chamber (12B+) into a liquid chamber (12B+) communicating with the gas chamber (12B+) connected to the gas chamber (12B+) of the shell (11); (12B) and a spring (14) for suppressing the accumulator.

[Function] As specified in the above-mentioned section of [Means for solving problems], the accumulator according to the present invention comprises (a) a shell in which a liquid inlet/outlet is formed, and (l) disposed inside the shell. (c) a diaphragm for dividing the internal space of the shell into a gas chamber and a liquid chamber communicating with a liquid inlet/outlet;
It is disposed in the gas chamber of the shell and is equipped with a spring for pressing the diaphragm toward the liquid chamber, so that it (i) prevents pressurized gas from being enclosed, and (11) prevents pressurization. It serves to avoid functional deterioration due to permeation of pressurized gas, and (iii) also serves to remove the gas sealing port and bladder.

[Embodiments] Next, preferred embodiments of the accumulator according to the present invention will be described in detail with reference to the accompanying drawings.

However, the examples described below are described to facilitate or accelerate understanding of the present invention, and are not described to limit the present invention.

In other words, each element disclosed in the embodiments described below includes all design changes and equivalent substitutions that fall within the spirit and technical scope of the present invention.

"Attachment Am1 FIG. 1 is a sectional view showing one embodiment of an accumulator according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of an embodiment of an accumulator according to the present invention will be described in detail with reference to FIG.

(2) is an accumulator according to the present invention, in which a threaded portion 11b2 formed on the outer circumferential surface 11b of the opening is screwed into a threaded portion 11a2 formed on the inner circumferential surface 11a of the opening of the shell body 11A. shell body 11
The edge portion 13a is held between the shell 11 with the shell lid 11B attached to the opening of the shell body 11A, the inner peripheral surface 11aI of the opening of the shell body 11A, and the outer peripheral surface 1 l b + of the opening of the shell lid 11B. 11 into a gas chamber 12A and a liquid chamber 12B. The opening of the shell lid body 11B is
The edge part 13 of the diaphragm 13 as the push-out part 111) 3
a, and its edge 13a is inserted into the shell body 1.
This prevents it from falling off between the inner circumferential surface 11a+ of the opening of the shell 1A and the outer circumferential surface 11b of the opening of the shell lid 1 and IB. The shell lid body 11B has a liquid inlet/outlet 11 for communicating the liquid chamber 12B with a liquid supply source (not shown).
b4, and a threaded portion 11b5 for attaching a liquid supply pipe (not shown) for communicating the liquid inlet/outlet 11b4 with a liquid supply source.

The accumulator (2) according to the present invention is arranged in the gas chamber 12A by having one end locked in the locking recess 11a of the shell body 11A and the other end abutting the center of the diaphragm 13. A spring 14 is arranged in contact with the center of the diaphragm 13 and receives the other end of the spring 14 to urge the diaphragm 13 toward the liquid inlet/outlet port 1 l b. and a guard member 15 that prevents excessive deformation of the spring 14 and prevents excessive deformation of the spring 14. Guard member 15 may be removed if desired.

Also, with reference to FIG. 1, the assembly procedure and installation procedure for an embodiment of the accumulator according to the present invention will be briefly explained.

First, the accumulator base according to the present invention has a locking recess 1.
The spring 14 is housed inside the shell body 11A in an appropriate environment (for example, the atmosphere) so that one end thereof is engaged with the shell body 11A.

Next, with the center portion of the diaphragm 13 in contact with the other end of the spring 14 via the guard member 15, the diaphragm 13 brings the outer peripheral surface of its edge portion 13a into contact with the inner peripheral surface 11a+ of the opening of the shell body 11. They are housed inside the shell main body 11A while being in contact with each other.

Furthermore, the pushing protrusion 11b is attached to the edge portion 13 of the diaphragm 13.
In the state where the shell lid body 11B is engaged with the inner circumferential surface of the shell body 1. I A screw part
11a2.

Therefore, in the accumulator according to the present invention, the spring 14 is sealed together with an environmental gas (for example, the atmosphere) in the gas chamber 12A.

Finally, the accumulator according to the present invention is attached to the liquid supply source by screwing the threaded portion 11b5 of the shell lid 11B onto the threaded portion of the liquid supply pipe.

Furthermore, with reference to FIG. 1, the operation of an embodiment of the accumulator according to the present invention will be explained in detail.

When the accumulator according to the present invention is attached to and communicates with a liquid supply source, the liquid pressure of the liquid supply source increases to the gas chamber 12.
The total force of the filled gas pressure of A and the spring force of the spring 14 (
In other words, if the predetermined value exceeds the lower limit of operation), the liquid supplied to the liquid chamber 12B as shown by the arrow x1 through the liquid inlet/outlet 11b4 formed in the shell lid 11B,
While resisting the combined force of the gas pressure in the gas chamber 12A and the spring force of the spring 14, the diaphragm 13 is moved toward the gas chamber 12A as indicated by the arrow ¥1, thereby expanding the liquid chamber 12B.

Along with this, the liquid supplied from the liquid inlet/outlet 11b4 as shown by the arrow x1 is sucked into the liquid chamber 12B. When the diaphragm 13 moves to a position where the liquid pressure in the liquid chamber 12B (that is, the liquid pressure of the liquid supply source) counteracts the combined force of the gas pressure in the gas chamber 12A and the spring force of the spring 14, the diaphragm 13 moves in the direction of arrow Y1. (See Figure 1).

When the liquid pressure of the liquid supply source increases from a predetermined value, the liquid supplied to the liquid chamber 12B via the liquid inlet/outlet 11b4 formed in the shell lid 11B as shown by the arrow x1 will cause the gas in the gas chamber 12A to The diaphragm 13 is moved from the position shown in FIG. 1 toward the gas chamber 12A as indicated by the arrow Y while resisting the combined force of the pressure and the spring force of the spring 14, so that the liquid chamber 12B is expanded. Along with this, the liquid supplied from the liquid inlet/outlet 11b4 as shown by the arrow x1 is sucked into the liquid chamber 12B, thereby alleviating the increase in the liquid pressure of the liquid supply source.

On the other hand, when the liquid pressure of the liquid supply source decreases from a predetermined value, the liquid inlet/outlet 11b formed in the shell lid 11B
The liquid supplied to the liquid chamber 12B as shown by the arrow X through the gas chamber 12A cannot resist the combined force of the gas pressure in the gas chamber 12A and the spring force of the spring 14. Therefore, the diaphragm 13 moves toward the liquid chamber 12B from the position shown in FIG. It is moved as shown by Y2, and the liquid chamber 12B is reduced. Along with this, the liquid chamber 12B
The liquid sucked into the interior of the liquid chamber 12B in advance is discharged from the liquid chamber 12B through the liquid inlet/outlet port 11b4 as indicated by the arrow x2, thereby alleviating the decrease in the liquid pressure of the liquid supply source.

The liquid pressure of the liquid supply source is the combined force of the sealed gas pressure of the gas chamber 12A and the spring force of the spring 14 (i.e., the lower limit of operation).
, the liquid previously supplied to the liquid chamber 12B as shown by the arrow xl through the liquid inlet/outlet 111) 4 formed in the shell lid 11B is reduced by the gas pressure in the gas chamber 12A and the spring force of the spring 14. cannot resist the comprehensive power of For this reason, the diaphragm 13
It is moved toward the liquid chamber 12B as shown by the arrow ¥2 until it comes into contact with the liquid chamber 1B.

Through the above-described operation, the accumulator according to the present invention can alleviate fluctuations in the liquid pressure of the liquid supply source that exceeds the lower limit of operation.

(3) Effects of the Invention As is clear from the above description, the accumulator according to the present invention comprises (a) a shell in which a liquid inlet/outlet is formed, and [b)
(c) a diaphragm disposed inside the shell for dividing the internal space of the shell into a gas chamber and a liquid chamber communicating with a liquid inlet/outlet; (11) Since it is equipped with a spring for pressing the liquid toward the liquid chamber, it has the effect of avoiding the sealing of pressurized gas, and (11) avoids functional deterioration due to the permeation of pressurized gas. As a result, (iii) the gas filling port and the plug can be removed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of an accumulator according to the present invention. lO......Accumulator 11...Shell 11A...Shell body 11a1.
......Opening inner peripheral surface 11a2...
...Threaded part 11a3......Locking recess 11B...
...Shell lid body 11b, ......
Opening outer circumferential surface 11b2... Threaded portion 11b3... Pushing portion 11b4... Liquid inlet/outlet 11b5...
...Threaded part 12A... Gas chamber 12B...
・・・・・・・・・Liquid chamber 13・・・・・・・・・・
...Diaphragm 13a...
Edge portion 14... Spring 15
・・・・・・・・・・・・・・・Guard member patent applicant
NOK Co., Ltd. Agent Patent Attorney Takashi Kufuji Heisei 3
April 25th

Claims (1)

[Claims] (a) A shell in which a liquid inlet/outlet (11b_2) is formed (
11) and (b) are arranged inside the shell (11), and the internal space of the shell (11) is connected to the gas chamber (12A) and the liquid inlet/outlet (12A).
(c) A diaphragm (13) for dividing the liquid chamber (12B) communicated with the liquid chamber (11b_2); An accumulator comprising a spring (14) for pressing toward the chamber (12B).