WO2023017782A1 - Accumulator - Google Patents

Abstract

Provided is an accumulator capable of preventing flowing-out of a fluorescent source to the outside even while being able to efficiently conduct elution of a fluorescent agent. This accumulator comprises: a body; a pipe disposed inside the body; and a strainer fitted to the lower end of the pipe. A wafer holding part for holding a wafer impregnated with a fluorescent agent is formed in the outer circumference of the strainer.

Description

accumulator

The present invention relates to accumulators.

A receiver tank, accumulator, etc. are used to separate and store the refrigerant circulating in the refrigeration cycle. This type of accumulator is equipped with a tank that separates the refrigerant that has flowed into the interior into a vapor phase refrigerant and a liquid phase refrigerant, and that stores the liquid phase refrigerant inside. is built-in.

By the way, when a refrigerant leak occurs in the piping of a refrigeration cycle, it is required to detect it early and take countermeasures such as leak prevention. I have a problem that I can't. Therefore, as shown in Patent Document 1, the refrigerant passing through the pipe is mixed with a fluorescent agent that emits light when irradiated with ultraviolet rays, for example, and when the fluorescent agent is visible from the outside, the visible location is the leakage location of the refrigerant. A technology has already been developed to identify the problem and take measures such as leak prevention.

JP 2012-202640 A

As a method for mixing the fluorescent agent into the refrigerant, if a wafer pre-impregnated with the fluorescent agent is placed inside the accumulator in contact with the refrigerant flowing into the accumulator, the fluorescent agent can be easily eluted into the refrigerant. can. However, if the wafer itself flows out of the accumulator to the outside, it may flow as foreign matter into the pipes of the refrigeration cycle and clog various devices. Therefore, it is necessary to devise a way to prevent the wafers from flowing out of the accumulator.

On the other hand, it is also an idea to pack the desiccant and the fluorescent agent in the desiccant bag that the accumulator contains. However, the bag of desiccant is often placed inside the upper part of the accumulator to absorb moisture from the gaseous refrigerant. There is a problem that the fluorescent agent cannot be eluted efficiently because the fluorescent agent is immersed in the phase refrigerant.

Therefore, it is an object of the present invention to provide an accumulator that does not allow the phosphor source to flow out to the outside even though the fluorescent agent can be efficiently eluted.

In order to achieve the above object, the accumulator according to the present invention is
torso and
a pipe located inside the fuselage;
a strainer attached to the lower end of the pipe;
A wafer holder for holding a wafer impregnated with a fluorescent agent is formed around the strainer.

According to the present invention, it is possible to provide an accumulator that does not allow the phosphor source to flow out to the outside even though the fluorescent agent can be efficiently eluted.

FIG. 1 is a vertical cross-sectional view of an accumulator according to a first embodiment. FIG. 2A is a top view of the strainer of the first embodiment; FIG. 2B is a front view of the strainer of the first embodiment; FIG. FIG. 3A is a top view of the strainer of the second embodiment; FIG. FIG. 3B is a side view of the strainer of the second embodiment; FIG. 4A is a top view of the strainer of the third embodiment; FIG. FIG. 4B is a front view of the strainer of the third embodiment; FIG. 5A is a top view of the strainer of the fourth embodiment; FIG. FIG. 5B is a side view of the strainer of the fourth embodiment; FIG. 6A is a top view of the strainer of the fifth embodiment; FIG. FIG. 6B is a side view of the strainer of the fifth embodiment; FIG. 7A is a top view of the strainer of the sixth embodiment; FIG. FIG. 7B is a side view of the strainer of the sixth embodiment;

An accumulator 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is a longitudinal sectional view of an accumulator 1 according to the first embodiment. The accumulator 1 has a tank body 2 , a double pipe 5 arranged in the tank body 2 , a bag 11 containing a desiccant (hygroscopic agent) DA, and a strainer 20 .

The tank body 2 is composed of a bottomed cylindrical body 3 with an open upper end, and a header 4 that is joined to the body 3 by circumferential welding via a welding portion 10 and seals the open end of the body 3 . The body 3 and header 4 are both made of metal such as aluminum alloy. In this specification, the side of the header 4 is referred to as the upper side, and the bottom side of the body 3 with respect to the header 4 is referred to as the lower side.

A coolant inflow hole 8 and a coolant outflow hole 9 are vertically formed through the header 4 which is formed in a substantially disk shape. An inner pipe 6 extending close to the inner bottom of the body 3 is connected to the coolant outflow hole 9 . A double pipe 5 is formed by wrapping an outer pipe (also simply referred to as a pipe) 7 on the outside of the inner pipe 6 .

Below the header 4, the mixed refrigerant (refrigerant in which gas phase and liquid phase are mixed) from the refrigerant inflow hole 8 is mixed with high-density liquid-phase refrigerant and compressor oil (hereinafter referred to as "oil"). A gas-liquid separation member 16 is provided in the shape of an inverted dish for separating the refrigerant into a gas phase refrigerant having a low temperature.

The inner pipe 6 is made of metal such as an aluminum alloy, and has an open lower end and an upper end connected to the coolant outlet hole 9 of the header 4 . The outer circumference of the inner pipe 6 is fitted inside a plurality of pipe ribs 7a projecting from the inner circumference of the outer pipe 7, thereby stably holding the inner pipe 6 inside the outer pipe 7. As shown in FIG.

The outer pipe 7 is made of synthetic resin and is attached inside the body 3 with its upper end open. A cylindrical strainer 20 is provided at the bottom of the outer pipe 7 .

A collar-shaped portion 7b extending radially outward and having a passage opening is connected to the central portion in the longitudinal direction of the outer pipe 7 . A holding member 7c for holding the bag 11 containing the desiccant DA is arranged on the outer periphery of the outer pipe 7 above the brim portion 7b, and the holding member 7c is attached to the outer pipe 7 using a binding band 7d. ing.

FIG. 2A is a top view of the strainer 20 of the first embodiment, and FIG. 2B is a front view of the strainer 20 of the first embodiment. The strainer 20 is placed and fixed on the bottom of the body 3, and includes a bottomed cylindrical case 21 made of synthetic resin and a cylindrical mesh filter 22 integrated with the case 21 by insert molding or the like. consists of The mesh filter 22 is made of, for example, a wire mesh or synthetic resin mesh material.

The case 21 includes a cylindrical upper cylindrical portion 21a to which the lower end portion of the outer pipe 7 is fitted and fixed, a circular bottom plate portion 21b, and the bottom plate portion 21b. and four columnar portions 21c connected to the cylindrical portion 21a. Four rectangular window portions 21d are defined between the four columnar portions 21c, and the mesh filter 22 is stretched over each window portion 21d. Note that the method of providing the mesh filter 22 in the case 21 is not limited to the above.

A pair of holding plate portions 21e and 21f are provided so as to bridge the outer circumference of the upper cylindrical portion 21a and the outer circumference of the bottom plate portion 21b on both sides of one columnar portion 21c in the circumferential direction. The holding plate portions 21e and 21f include parallel plate portions 21g and 21h extending outward in parallel from the case 21, and distal end portions 21i and 21j extending away from the ends of the parallel plate portions 21g and 21h. and Furthermore, holding openings 21k and 21m forming a wafer holding portion are formed from the parallel plate portions 21g and 21h to the tip portions 21i and 21j.

The wafer 23 is disc-shaped and made of felt, and is pre-impregnated with a fluorescent agent. As the fluorescent agent, for example, one that emits light when irradiated with ultraviolet rays can be used, but it is not limited thereto. The vertical height of the holding openings 21 k and 21 m is substantially equal to the thickness of the wafer 23 . Also, the distance between the parallel plate portions 21g and 21h is smaller than the outer diameter of the wafer 23. As shown in FIG.

During assembly, the wafer 23 is opposed to the holding plate portions 21e and 21f with respect to the case 21 as indicated by the dotted line in FIG. 2A. From here, when the wafer 23 is brought closer to the case 21, the tip portions 21i and 21j first come into contact with the wafer 23, and by further pushing the wafer 23, the parallel plate portions 21g and 21h are elastically deformed so as to separate from each other. When the wafer 23 is engaged with the holding openings 21k and 21m, the parallel plate portions 21g and 21h are restored from elastic deformation. Therefore, since the side of the wafer 23 away from the strainer 20 is held by the outer ends of the holding openings 21k and 21m, the wafer 23 is prevented from falling off.

According to this embodiment, the wafer 23 can be attached simply by pushing the wafer 23 toward the strainer 20 without using a special jig or the like, so assembly is easy and manufacturing man-hours can be reduced. The strainer 20 with the wafer 23 attached thereto is attached to the accumulator 1 together with the outer pipe 7 by inserting the lower end of the outer pipe 7 into the upper cylindrical portion 21a.

The operation of the accumulator 1 configured as above will be described with reference to FIG. In the following description, the accumulator 1 is arranged between the evaporator and the compressor of the refrigeration cycle, water contained in the refrigerant from the evaporator is removed to generate gaseous refrigerant, and this is sent to the compressor. A case of returning will be described as an example.

When the refrigerant is discharged from the evaporator, it is conveyed to the accumulator 1 through a connecting pipe (not shown). After reaching the accumulator 1, the refrigerant flows into the body 3 from the refrigerant inflow hole 8, and then collides with the gas-liquid separation member 16 to separate the high-density liquid-phase refrigerant and oil from the low-density gas-phase refrigerant (gas refrigerant). ) and

The liquid-phase refrigerant and oil after gas-liquid separation are stored in the body 3 due to their own weight. In the process, the separation between the liquid-phase refrigerant and the oil progresses, and the oil accumulates below the liquid-phase refrigerant. At this time, the liquid surface of the liquid-phase refrigerant reaches a height position where a part of the desiccant-containing bag 11 is immersed. Therefore, both moisture contained in the liquid-phase refrigerant and moisture contained in the gas-phase refrigerant are absorbed by the desiccant DA.

In addition, since the wafer 23 held by the strainer 20 positioned at the bottom of the body 3 is also immersed in the liquid phase refrigerant, the fluorescent agent impregnated in the wafer 23 dissolves into the liquid phase refrigerant and circulates in the pipe. Become. Therefore, when the refrigerant leaks, the fluorescent agent also leaks out at the same time, thereby facilitating identification of the leaking location. According to this embodiment, since the wafer 23 is held by the holding plates 21e and 21f, the exposed area of the wafer 23 is large, and the impregnated fluorescent agent can be efficiently eluted into the liquid phase coolant.

On the other hand, the gas-phase refrigerant separated from gas and liquid flows in from the upper end opening of the outer pipe 7 and descends inside the outer pipe 7 . After that, the coolant is folded back at the bottom of the outer pipe 7 and flows into the inner pipe 6 , rises inside the inner pipe 6 , and is guided to the coolant outlet hole 9 .

Oil that collects in the lower part of the body 3 together with the liquid-phase refrigerant moves to the bottom side of the body 3 due to differences in specific gravity and properties from the liquid-phase refrigerant, and is attracted by the gas-phase refrigerant sucked into the compressor suction side. Then, it passes through the mesh filter 22 of the strainer 20, the oil return hole 7e, and the inner space of the inner pipe 6 in this order, and is returned to the suction side of the compressor together with the gas-phase refrigerant to circulate. Foreign matter such as sludge is caught when passing through the mesh filter 22, and the foreign matter is removed from the circulating refrigerant (including oil).

At this time, the holding plate portions 21e and 21f and the wafer 23 are arranged at positions facing the columnar portion 21c, that is, the window portion 21d is not closed, so oil passing through the window portion 21d is not blocked. In addition, even if the wafer 23 falls off the holding plates 21e and 21f, it cannot pass through the mesh filter 22 and stays outside the strainer 20, thereby preventing foreign matter from being sucked into the piping of the refrigeration cycle.

(Second embodiment)
FIG. 3A is a top view of the strainer 20A of the second embodiment, and FIG. 3B is a side view of the strainer 20A of the second embodiment. The strainer 20A can be assembled with the accumulator 1 shown in FIG. Further, in the strainer 20A, the case 21A and the mesh filter 22A have the same configurations as the case 21 and the mesh filter 22 of the above-described embodiment, so redundant description will be omitted. Moreover, the wafer 23 is also common to the first embodiment.

A holding plate portion 21Ae is continuously provided on the outer periphery of the bottom plate portion 21Ab below one columnar portion 21Ac. The holding plate portion 21Ae extends radially outward of the case 21A. The lower surfaces of the bottom plate portion 21Ab and the holding plate portion 21Ae are preferably flush with each other.

A vertical plate portion 21Af extending upward in parallel with the outer peripheral surface of the case 21A is connected to the outer end of the holding plate portion 21Ae. An inclined plate portion 21Ag inclined so as to be spaced apart from is continuously provided. Further, a holding opening 21Ah forming a wafer holding portion is formed from the inclined plate portion 21Ag to the vertical plate portion 21Af.

The width of the holding opening 21Ah is approximately equal to the thickness of the wafer 23. Further, the distance between the outer peripheral surface of the case 21A and the vertical plate portion 21Af is smaller than the outer diameter of the wafer 23. As shown in FIG.

During assembly, the wafer 23 is positioned above the holding plate portion 21Ae as indicated by the dotted line in FIG. 3B. When the wafer 23 is lowered from this position, the inclined plate portion 21Ag first comes into contact with the wafer 23, and by further pressing the wafer 23, the vertical plate portion 21Af is elastically deformed away from the outer peripheral surface of the case 21A. When the wafer 23 engages with the holding opening 21Ah and comes into contact with the holding plate portion 21Ae, the vertical plate portion 21Af recovers from elastic deformation. Therefore, since the side of the wafer 23 away from the holding plate portion 21Ae is held by the outer end of the holding opening 21Ah, the wafer 23 is prevented from falling off. A portion of the wafer 23 protrudes outside the vertical plate portion 21Af.

According to this embodiment, the wafer 23 can be attached simply by pushing the wafer 23 toward the strainer 20A without using a special jig or the like, so assembly is easy and manufacturing man-hours can be reduced. The strainer 20A with the wafer 23 attached thereto is attached to the accumulator 1 together with the outer pipe 7 by inserting the lower end of the outer pipe 7 (FIG. 1) into the upper cylindrical portion 21Aa.

(Third Embodiment)
FIG. 4A is a top view of the strainer 20B of the third embodiment, and FIG. 4B is a front view of the strainer 20B of the third embodiment. The strainer 20B can be assembled with the accumulator 1 shown in FIG. Further, in the strainer 20B, the case 21B and the mesh filter 22B have the same configurations as the case 21 and the mesh filter 22 of the above-described embodiment, so redundant description will be omitted. Moreover, the wafer 23 is also common to the first embodiment.

A pair of lower holding beams 21Be and 21Bf are implanted on the outer circumference of the bottom plate portion 21Bb sandwiching one columnar portion 21Bc and extend outward in parallel. An upper holding beam portion 21Bg is planted on the outer periphery and extends parallel to the lower holding beam portions 21Be and 21Bf. The lengths of the lower holding beam portions 21Be and 21Bf and the upper holding beam portion 21Bg are equal, and the interval between the lower holding beam portions 21Be and 21Bf is set smaller than the outer diameter of the wafer 23. As shown in FIG.

An inverted T-shaped holding portion 21Bh is connected to the outer ends of the lower holding beam portions 21Be, 21Bf and the upper holding beam portion 21Bg so as to connect the respective ends. A pocket-shaped space surrounded by the lower holding beams 21Be and 21Bf, the upper holding beams 21Bg, and the holding portion 21Bh constitutes a wafer holding portion.

During assembly, the wafer 23 is positioned below the upper holding beam portion 21Bg as indicated by the dotted line in FIG. 4B. When the wafer 23 is lifted from this position, the wafer 23 is elastically deformed, enters the space surrounded by the lower holding beams 21Be and 21Bf and the holding portion 21Bh, and further contacts the upper holding beam 21Bg. locked. When the wafer 23 passes through the lower holding beams 21Be and 21Bf, the wafer 23 recovers from the elastic deformation, so that it is prevented from falling off.

According to this embodiment, the wafer 23 can be attached simply by pushing the wafer 23 toward the strainer 20B without using a special jig or the like, so assembly is easy and manufacturing man-hours can be reduced. The strainer 20B with the wafer 23 attached thereto is attached to the accumulator 1 together with the outer pipe 7 by inserting the lower end of the outer pipe 7 (FIG. 1) into the upper cylindrical portion 21Ba. When the strainer 20B is incorporated in the accumulator 1, the bottom of the body 3 is positioned below the lower holding beams 21Be and 21Bf and the holding portion 21Bh, so the wafer 23 is prevented from falling off.

(Fourth embodiment)
FIG. 5A is a top view of the strainer 20C of the fourth embodiment, and FIG. 5B is a side view of the strainer 20C of the fourth embodiment. The strainer 20C can be assembled with the accumulator 1 shown in FIG. Further, in the strainer 20C, the case 21C and the mesh filter 22C have the same configurations as the case 21 and the mesh filter 22 of the above-described embodiment, so redundant description will be omitted. Moreover, the wafer 23 is also common to the first embodiment.

A holding plate portion 21Ce is continuously provided on the outer circumference of the upper cylindrical portion 21Ca above one columnar portion 21Cc. The holding plate portion 21Ce extends radially outward of the case 21C.

A vertical plate portion 21Cf extending downward in parallel with the outer peripheral surface of the case 21C is connected to the outer end of the holding plate portion 21Ce. An inclined plate portion 21Cg inclined so as to be spaced apart from is continuously provided. Further, a holding opening 21Ch constituting a wafer holding portion is formed from the inclined plate portion 21Cg to the vertical plate portion 21Cf.

The width of the holding opening 21Ch is approximately equal to the thickness of the wafer 23. Also, the distance between the outer peripheral surface of the case 21C and the vertical plate portion 21Cf is smaller than the outer diameter of the wafer 23 . The lower end of the inclined plate portion 21Cg is preferably at substantially the same height as the lower surface of the bottom plate portion 21Cb.

During assembly, the wafer 23 is positioned below the holding plate portion 21Ce as indicated by the dotted line in FIG. 5B. When the wafer 23 is lifted from this position, the inclined plate portion 21Cg first comes into contact with the wafer 23, and by further pressing the wafer 23, the vertical plate portion 21Cf is elastically deformed away from the outer peripheral surface of the case 21C. When the wafer 23 is engaged with the holding opening 21Ch and comes into contact with the holding plate portion 21Ce, the vertical plate portion 21Cf recovers from elastic deformation. Therefore, since the side of the wafer 23 away from the holding plate portion 21Ce is held by the outer end of the holding opening 21Ch, the wafer 23 is prevented from falling off. A portion of the wafer 23 protrudes outside the vertical plate portion 21Cf.

According to this embodiment, the wafer 23 can be attached simply by pushing the wafer 23 toward the strainer 20C without using a special jig or the like, so assembly is easy and manufacturing man-hours can be reduced. The strainer 20C with the wafer 23 attached thereto is attached to the accumulator 1 together with the outer pipe 7 by inserting the lower end of the outer pipe 7 (FIG. 1) into the upper cylindrical portion 21Ca.

(Fifth embodiment)
FIG. 6A is a top view of strainer 20D of the fifth embodiment, and FIG. 6B is a side view of strainer 20D of the fifth embodiment. The strainer 20D can be assembled with the accumulator 1 shown in FIG. Further, in the strainer 20D, the case 21D and the mesh filter 22D have the same configurations as the case 21 and the mesh filter 22 of the above-described embodiment, so redundant description will be omitted. Moreover, the wafer 23 is also common to the first embodiment.

The end of the arc-shaped holding plate portion 21De is connected to the outer periphery of the bottom plate portion 21Db below one columnar portion 21Dc. The holding plate portion 21De extends upward in an arc.

An inclined plate portion 21Dg, which is inclined so as to separate from the case 21D as it goes upward, is connected to the upper end of the holding plate portion 21De. Furthermore, a pair of claw portions 21Dh and 21Di extending upward are continuously provided on both sides in the width direction of the holding plate portion 21De in the vicinity of the case 21D. The holding plate portion 21De and the claw portions 21Dh and 21Di constitute a wafer holding portion.

The diameter of the inscribed circle of the holding plate portion 21De is smaller than the outer diameter of the wafer 23. The width of the holding plate portion 21De is approximately equal to the thickness of the wafer 23 . It is preferable that the lengths of the claw portions 21Dh and 21Di are equal to the radius of the wafer 23 .

During assembly, the wafer 23 is positioned above the holding plate portion 21De as indicated by the dotted line in FIG. 6B. When the wafer 23 is lowered from this position, the inclined plate portion 21Dg first comes into contact with the wafer 23, and when the wafer 23 is further pushed in, the holding plate portion 21De is elastically deformed so that the diameter of the holding plate portion 21De increases. can receive the wafer 23 at the . The elastic deformation of the holding plate portion 21De is maintained while the outer peripheral surface of the wafer 23 is in contact with the inner surface of the holding plate portion 21De and the outer peripheral surface of the columnar portion 21Dc. The outer peripheral surface of the wafer 23 is urged and held toward the columnar portion 21Dc by the elastic force, and both end surfaces of the wafer 23 are held by the claw portions 21Dh and 21Di, thereby preventing the wafer 23 from falling off.

According to this embodiment, the wafer 23 can be attached simply by pushing the wafer 23 toward the strainer 20D without using a special jig or the like, so assembly is easy and manufacturing man-hours can be reduced. The strainer 20D with the wafer 23 attached thereto is attached to the accumulator 1 together with the outer pipe 7 by inserting the lower end of the outer pipe 7 (FIG. 1) into the upper cylindrical portion 21Da.

(Sixth embodiment)
FIG. 7A is a top view of the strainer 20E of the sixth embodiment, and FIG. 7B is a side view of the strainer 20E of the sixth embodiment. The strainer 20E can be attached to the accumulator 1 shown in FIG. Further, in the strainer 20E, the case 21E and the mesh filter 22E have the same configurations as the case 21 and the mesh filter 22 of the above-described embodiment, so redundant description will be omitted. Moreover, the wafer 23 is also common to the first embodiment.

An end portion of an arc-shaped holding plate portion 21Ee is connected to the outer periphery of the upper cylindrical portion 21Ea above one columnar portion 21Ec. The holding plate portion 21Ee extends downward in an arc.

An inclined plate portion 21Eg that is inclined away from the case 21E as it goes downward is continuously provided at the lower end of the holding plate portion 21Ee. Furthermore, a pair of claw portions 21Eh and 21Ei extending downward are continuously provided on both sides in the width direction of the holding plate portion 21Ee in the vicinity of the case 21E. The holding plate portion 21Ee and the claw portions 21Eh and 21Ei constitute a wafer holding portion.

The diameter of the inscribed circle of the holding plate portion 21Ee is smaller than the outer diameter of the wafer 23. The width of the holding plate portion 21Ee is approximately equal to the thickness of the wafer 23 . It is preferable that the length of the claw portions 21Eh and 21Ei be equal to the radius of the wafer 23 .

During assembly, the wafer 23 is positioned below the holding plate portion 21Ee as indicated by the dotted line in FIG. 7B. When the wafer 23 is lifted from this position, the inclined plate portion 21Eg first comes into contact with the wafer 23, and when the wafer 23 is pushed further, the holding plate portion 21Ee is elastically deformed so as to expand its diameter. can receive the wafer 23 at the . The elastic deformation of the holding plate portion 21Ee is maintained while the outer peripheral surface of the wafer 23 is in contact with the inner surface of the holding plate portion 21Ee and the outer surface of the columnar portion 21Ec. The outer peripheral surface of the wafer 23 is urged and held toward the columnar portion 21Ec by the elastic force, and both end surfaces of the wafer 23 are held by the claw portions 21Eh and 21Ei, thereby preventing the wafer 23 from falling off.

According to this embodiment, the wafer 23 can be attached simply by pushing the wafer 23 toward the strainer 20E without using a special jig or the like, so assembly is easy and manufacturing man-hours can be reduced. The strainer 20E with the wafer 23 attached thereto is attached to the accumulator 1 together with the outer pipe 7 by inserting the lower end of the outer pipe 7 (FIG. 1) into the upper cylindrical portion 21Ea.

Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the present invention.

1 Accumulator 2 Tank body 3 Body 4 Header 5 Double pipe 6 Inner pipe 7 Outer pipe 8 Refrigerant inflow hole 9 Refrigerant outflow hole 11 Bag 20, 20A, 20B, 20C, 20D, 20E Strainer 21, 21A, 21B, 21C, 21D , 21E case 22, 22A, 22B, 22C, 22D, 22E mesh filter 23 wafer

Claims (8)

torso and
a pipe located inside the fuselage;
a strainer attached to the lower end of the pipe;
A wafer holder for holding a wafer impregnated with a fluorescent agent is formed around the strainer.
An accumulator characterized by: The strainer is
a case having an upper cylindrical portion that engages with the pipe, a bottom plate portion, and a plurality of columnar portions that connect the upper cylindrical portion and the bottom plate portion;
a mesh filter formed between the pillars;
The wafer holding part is arranged at a position facing the columnar part,
The accumulator according to claim 1, characterized in that: a pair of holding plates extending from the case with the columnar portion interposed therebetween; and holding openings formed in the holding plates, wherein the wafer is held in the holding openings.
The accumulator according to claim 2, characterized in that: a holding plate extending from the bottom plate portion below the columnar portion; a vertical plate extending from the holding plate along the outer peripheral surface of the case; and a holding opening formed in the vertical plate; the wafer is held in the holding opening;
The accumulator according to claim 2, characterized in that: a holding plate extending from the upper cylindrical portion above the columnar portion; a vertical plate extending from the holding plate along the outer peripheral surface of the case; and a holding opening formed in the vertical plate. , the wafer is held in the holding opening;
The accumulator according to claim 2, characterized in that: an upper holding beam portion extending from the upper cylindrical portion above the columnar portion; a pair of lower holding beam portions extending from the bottom plate portion across the columnar portion; the upper holding beam portion and the lower holding beam portion; and a holding portion connected to an end of the beam portion,
the wafer is held between the upper retention beam, the lower retention beam, and the holder;
The accumulator according to claim 2, characterized in that: a holding plate extending in an arc shape from the bottom plate portion below the columnar portion; and a pair of claw portions extending from both sides in the width direction of the holding plate;
the wafer is held between the holding plate and the claw portion;
The accumulator according to claim 2, characterized in that: a holding plate extending in an arc shape from the upper cylindrical portion above the columnar portion; and a pair of claw portions extending from both sides in the width direction of the holding plate;
the wafer is held between the holding plate and the claw portion;
The accumulator according to claim 2, characterized in that:

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