JP2008164272A - Liquid storage container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid storage container holding desiccant in an interior while reducing manufacturing costs. <P>SOLUTION: A hollow space of an outer tube 21 interior is partitioned by tabular members (partition parts 22, 23) integrally formed on an inner side face of the tube shaped outer tube 21, into first to third spaces 21c-21d respectively extending in an axial direction. Communication parts 24, 25 communicating the first space 21c with the third space 21e via the second space 21d are formed on the partition parts 22, 23. The second space 21d functions as a desiccant filling space to be filled with the desiccant 40. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a liquid reservoir that separates moisture in a refrigerant.

  2. Description of the Related Art Conventionally, in a refrigeration cycle such as a car air conditioner, a liquid reservoir (liquid tank or accumulator) for storing excess refrigerant in the refrigeration cycle, gas-liquid separation, or removing moisture and dust is known.

For example, Patent Document 1 discloses an accumulator having a configuration in which a housing is partitioned into an upper chamber and a lower chamber by a desiccant unit. Specifically, a desiccant unit is disposed at an intermediate portion in the height direction in the housing, and the inside of the housing is partitioned into an upper chamber and a lower chamber with the desiccant unit interposed therebetween. These upper and lower chambers communicate with each other through a desiccant unit, and the upper chamber is partitioned by a separator into a chamber on the refrigerant inlet side and a chamber on the refrigerant outlet side, and these left and right chambers are provided in the separator. Are communicated through the vents.
Japanese Patent Laid-Open No. 10-23201

  However, according to the technique disclosed in Patent Document 1, a plate for holding the desiccant at the intermediate position of the housing is necessary, or the desiccant unit is fixed at the intermediate position of the housing. There is an inconvenience that manufacturing costs such as material costs and processing costs are large.

  This invention is made | formed in view of such a situation, The objective is providing the liquid reservoir of the structure which hold | maintained the desiccant inside, reducing the cost on manufacture.

  A liquid reservoir according to claim 1 of the present invention is a liquid reservoir used in a refrigeration cycle, and includes an outer cylinder formed by a cylindrical outer cylinder and a plate-shaped member integrally formed on an inner surface of the outer cylinder. A partition part that partitions the internal hollow space into first to third spaces each extending in the axial direction, and formed in the partition part, and the first space and the third space via the second space A communication portion that communicates with the first space, an inflow port through which the refrigerant flows into the first space, and an outflow port through which the refrigerant flows out from the third space, and seals one open end of the outer cylinder. It has a top plate and a bottom plate that seals the other opening end of the outer cylinder, and the second space functions as a desiccant filling space filled with the desiccant.

  In the liquid reservoir according to claim 2 of the present invention, the communication portion may be configured by a plurality of openings each having a width smaller than the diameter of the desiccant.

  In the liquid reservoir according to claim 3 of the present invention, the partition portion is formed so as to protrude from the bottom plate, and the bottom plate has an opening corresponding in shape to the partition portion, and the opening of the partition portion is formed in this opening. While the protruding part is fitted, the fitting part may be welded.

  In the liquid reservoir according to claim 4 of the present invention, the partition portion is formed with an opening serving as an oil bleed that allows the oil to flow through the first space and the second space at the end on the bottom plate side. May be.

  According to a fifth aspect of the present invention, there is provided a liquid storage device used in a refrigeration cycle, wherein a cylindrical outer tube and a plate-like member integrally formed on an inner surface of the outer tube are provided inside the outer tube. A partition portion that divides the hollow space into a plurality of spaces each extending in the axial direction, an inflow port through which the refrigerant flows into the outer cylinder, and an outflow port through which the refrigerant flows out of the outer cylinder. And a bottom plate for sealing the lower end of the outer cylinder. Here, the partition portion has a communication portion that forms a series of refrigerant passages that sequentially pass through each space by communicating with spaces adjacent to each other, and a starting point of the series of passages among the plurality of spaces. The 1st space which functions becomes a space filled with a desiccant.

  In the liquid reservoir according to claim 6 of the present invention, it is preferable that the inflow port causes the refrigerant to flow into the first space.

  In the liquid reservoir according to claim 7 of the present invention, it is desirable that the second space following the first space has a larger cross-sectional area perpendicular to the axial direction than the first space.

  In the liquid reservoir according to claim 8 of the present invention, the partition portion that partitions the first space and the second space following the first space has an extension length on the upper end side, and an upper end portion of the outer cylinder. It is preferable to set it shorter.

  In the liquid reservoir according to claim 9 of the present invention, the first space has its own space, each of which extends in the axial direction, the desiccant filling space filled with the desiccant, and the desiccant not filled. It is preferable to have a space partition portion that partitions into a non-desiccant filling space. In this case, it is desirable for the inflow port to allow the refrigerant to flow into both the desiccant filling space and the non-desiccant filling space.

  Further, the liquid reservoir according to claim 10 of the present invention is the liquid reservoir used in the refrigeration cycle, wherein the cylindrical outer cylinder and the plate-shaped member integrally formed on the inner side surface of the outer cylinder, A partition for partitioning the hollow space inside the outer cylinder into first to third spaces each extending in the axial direction, an inlet for allowing the refrigerant to flow into the outer cylinder, and an outlet for allowing the refrigerant to flow out of the outer cylinder And a top plate that seals one open end of the outer cylinder, and a bottom plate that seals the other open end of the outer cylinder. In this case, the partition portion has a communication portion that forms a series of passages that connect the first space, the second space, and the third space by communicating adjacent spaces. The second space functions as a space filled with the desiccant and has its own space extending in the axial direction, each of which is filled with the desiccant and filled with the desiccant. It has a space partition that divides into a desiccant filling space, and the refrigerant from the first space merges into the third space after separating into the desiccant filling space and the non-desiccant filling space. The desiccant filling space is separated from the third space via the non-desiccant filling space.

  According to the liquid reservoir according to claim 1 of the present invention, the second space, which is the desiccant filling space, can be integrally formed as a molded product inside the outer cylinder, so that the main body housing is made at low cost. be able to. As a result, it is possible to provide a liquid reservoir having a structure in which a desiccant is held inside while suppressing manufacturing costs.

  According to the liquid storage device of the second aspect of the present invention, it is possible to suppress the disadvantage that the granular desiccant flows out from the second space to the first or third space.

  According to the liquid storage device of the third aspect of the present invention, both can be reliably fixed by a technique such as welding by fitting the protruding portion of the first partitioning portion into the opening on the bottom plate side. .

  According to the reservoir of the fourth aspect of the present invention, oil bleed can be realized by a simple method.

  According to the liquid reservoir according to claim 5 of the present invention, the plurality of spaces including the space filled with the desiccant can be integrally formed inside the outer cylinder as a molded product, such as extrusion molding. Therefore, the main body housing can be made at low cost. Thus, unlike the conventional case, there is no need to separately prepare a plate for holding the desiccant, so that it is possible to provide a liquid reservoir having a structure in which the desiccant is held inside while suppressing manufacturing costs. it can. Further, since the refrigerant passage and the desiccant holding space can be used together, it is not necessary to have an extra space inside the main body housing, and the liquid reservoir can be made compact.

  According to the liquid storage device of the sixth aspect of the present invention, the refrigerant flow can be initially rectified by the small desiccant by passing through the first space.

  According to the liquid reservoir according to claim 7 of the present invention, the flow rate of the refrigerant flowing from the first space into the second space can be suppressed, so that the liquid is stored on the lower surfaces of the first and second spaces. Even if the liquid level of the liquid refrigerant is disturbed by the flow of the refrigerant, this can be suppressed as much as possible.

  According to the liquid storage device of the eighth aspect of the present invention, it is not necessary to pass the stored liquid refrigerant and flow the gas refrigerant to the subsequent space, thereby preventing the liquid refrigerant from being disturbed. Can be suppressed.

  According to the liquid storage device of the ninth aspect of the present invention, it is possible to secure a refrigerant passage by the non-desiccant filling space side even when contamination accumulates and the resistance of the desiccant filling space increases. it can. Thereby, the situation where the flow of the refrigerant is inhibited can be suppressed, and the deterioration of the system performance can be suppressed.

  According to the liquid storage device of the tenth aspect of the present invention, it is possible to secure a refrigerant passage by the non-desiccant filling space side even when contamination accumulates and the resistance of the desiccant filling space increases. it can. Thereby, the situation where the flow of the refrigerant is inhibited can be suppressed, and the deterioration of the system performance can be suppressed.

(First embodiment)
FIG. 1 is an exploded perspective view schematically showing the overall configuration of the liquid reservoir 1 according to the first embodiment of the present invention. A liquid reservoir 1 according to this embodiment is an accumulator used in a refrigeration cycle such as an air conditioner for a vehicle. This accumulator separates the refrigerant supplied from the upstream process into a gas phase and a liquid phase, sends out the gas phase refrigerant to the downstream process, and has a function of temporarily storing the liquid phase refrigerant. Yes.

  The liquid reservoir 1 is mainly composed of a top plate 10, a cylindrical main body housing 20, and a bottom plate 30, and the pair of open end portions 21 a and 21 b in the cylindrical main body housing 20 are provided on the top plate 10. And the bottom plate 30 are respectively sealed.

  The top plate 10 includes an inflow port 11 through which the refrigerant flows into the inside of the main body housing 20 and an outflow port 12 through which the gas-phase refrigerant separated in the gas-liquid state in the main body housing 20 flows out. And is disposed at one open end (upper end) 21 a of the main body housing 20. On the other hand, the bottom plate 30 is disposed at the other open end (lower end) 21 b of the main body housing 20. The top plate 10 and the bottom plate 30 are fixed to the main body housing 20 by, for example, a technique such as welding, thereby sealing the internal space of the main body housing 20.

  FIG. 2 is a schematic diagram showing the main body housing 20. The main body housing 20 includes a cylindrical outer cylinder 21 and a pair of partition portions 22 and 23 that partition the internal space of the outer cylinder 21. The pair of partition portions 22 and 23 are integrally formed on the inner peripheral surface of the outer cylinder 21 by a technique such as extrusion molding.

  The pair of partitioning portions 22 and 23 are configured by plate-like members, and extend in the axial direction in the internal space of the outer cylinder 21. The pair of partition portions 22 and 23 are formed integrally with each other, and the cross section has a substantially T-shape. By the pair of partitioning portions 22 and 23, the space inside the outer cylinder 21 is partitioned into three spaces. Specifically, the internal space of the outer cylinder 21 is partitioned into two spaces by the first partition portion 22, and one space divided by the first partition portion 22 by the second partition portion 23. However, it is further divided into two spaces.

  The first to third spaces 21c to 21e, which are the three spaces in the outer cylinder 21, are mutually independent spaces, and each extend in the axial direction of the outer cylinder 21. The first space 21c defined by the first partition 22 and the inner peripheral surface of the outer cylinder 21 is a space having the largest volume among the three spaces 21c to 21e. The second and third spaces 21c and 21d partitioned by the first partition 22, the second partition 23, and the inner peripheral surface of the outer cylinder 21 are the second space 21d and the first space. The third space 21e is a space having a volume smaller than that of the second space 21d.

  The first partition portion 22 has a semicircular opening formed on the upper end side thereof, that is, the top plate 10 side, and the first space 21c and the second space 21d communicate with each other through the opening. A first communication unit 24 is configured. The second partition portion 23 has a substantially rectangular opening formed on the lower end side thereof, that is, on the bottom plate 30 side, and the second space 21d and the third space 21e communicate with each other through the opening. The second communication part b25 is configured. By the pair of communication portions 24 and 25, the first space 21c and the third space 21e are communicated with each other via the second space 21d, whereby the second space 21d is communicated from the first space 21c. A series of passages that pass through to the third space 21e is formed.

  The inlet 11 of the top plate 10 described above is provided in a position corresponding to the first space 21 c in the main body housing 20, and the outlet 12 of the top plate 10 is provided in the third housing 20. It is provided in correspondence with the space 21e. Therefore, the refrigerant that has flowed into the main body housing 20 from the inlet 11 is first supplied to the first space 21c. The refrigerant supplied to the first space 21c flows into the second space 21d from the opening of the first partition portion 22, that is, from the first communication portion 24. Then, the refrigerant supplied to the second space 21d flows into the third partition 21e from the opening of the second partition 23, that is, the second communication portion 25, and then the flow of the top 10 It flows out from the outlet 12 to the outside.

  Here, as one of the characteristics of the present embodiment, the desiccant 40 is filled in the second space 21 d in the main body housing 20. In other words, the second space 21d functions as a filling space filled with the desiccant 40. In this way, by filling the second space 21d with the desiccant 40, the desiccant 40 is present in the refrigerant circulation process in the main body housing 20 from the first space 21c to the third space 21e. It will be. At this time, the first and second communication portions 24 and 25 are configured so that the desiccant 40 accommodated in the second space 21d does not enter the first and third spaces 21c and 21e. The opening has a size smaller than the diameter of the desiccant 40.

  Such a liquid reservoir 1 is applied to a refrigeration cycle of a vehicle air conditioner. The refrigeration cycle includes a compressor that compresses refrigerant and discharges a high-temperature and high-pressure refrigerant, an external heat exchanger and an internal heat exchanger that respectively cool the refrigerant discharged from the compressor, and decompresses the cooled refrigerant. An expansion valve for evaporating the refrigerant expanded by the expansion valve, separating the refrigerant sent from the evaporator into a gas phase and a liquid phase, and converting the gas phase refrigerant to an internal heat exchanger And a reservoir (accumulator) 1 to be sent to the compressor. Then, moisture is removed from the gas refrigerant by the desiccant in the second space 21d, and the gas refrigerant is supplied from the outlet 12 to the compressor via the third space 21e. And heat exchange is performed using the refrigerant | coolant which circulates in this refrigerating cycle, and cooling air is supplied with an evaporator. Here, in the liquid storage device 1, in the first space 21c, the gas-liquid mixed refrigerant is first separated into a gas refrigerant and a liquid refrigerant, and the liquid refrigerant is stored in the bottom.

  Thus, according to the present embodiment, the internal space of the main body housing 20 is divided into a plurality of spaces (in the present embodiment, three spaces 21c) that extend in the axial direction of the main body housing 20 by the partition portions 22 and 23. To 21e). These spaces form a series of passages through which the refrigerant flows from the inlet side to the outlet side. Of the plurality of spaces 21 c to 21 e, the second space 21 d existing in the course of the refrigerant flow functions as a desiccant filling space filled with the desiccant 40. Here, since the second space 21d, which is a desiccant filling space, can be integrally formed inside the outer cylinder 21 as a molded product, such as extrusion molding, the main body housing 20 can be made at low cost. . Thus, unlike the conventional case, there is no need to separately prepare a plate for holding the desiccant, and thus the liquid reservoir 1 having a structure in which the desiccant is held inside is provided while suppressing the manufacturing cost. Can do.

(Second Embodiment)
FIG. 3 is a perspective view schematically showing the main body housing 20 of the liquid reservoir 1 according to the second embodiment. The liquid reservoir 1 according to the second embodiment is different from that of the first embodiment in the shapes of the first and second communication portions 24 and 25 in the main body housing 20. In addition, about the same structure as 1st Embodiment, a referential mark is quoted and the overlapping description is abbreviate | omitted.

  As shown in FIG. 3, in the second embodiment, the first and second communication portions 24, 25 have a plurality of slit-shaped openings, specifically, a width smaller than the diameter of the desiccant 40. It is comprised by the some opening which has. By forming the first and second communication portions 24 and 25 in the slit shape in this manner, the granular desiccant 40 flows out from the second space 21d to the first or third space 21c and 21e. Inconveniences such as this can be suppressed. Further, when the first and second communication portions 24 and 25 are configured by a single opening, it is necessary to reduce the size of the opening in order to prevent the desiccant 40 from flowing out. There is a risk of disrupting the distribution of However, when the first and second communication portions 24 and 25 are configured by a plurality of slit-shaped openings, the height of the slit and the number of slits are adjusted to prevent the refrigerant from flowing and prevent drying. The outflow of the agent 40 can be suppressed. Note that the shapes of the slit-like first and second communication portions 24 and 25 shown in the second embodiment can be similarly applied to embodiments described later.

(Third embodiment)
FIG. 4 is an exploded perspective view schematically showing the configuration of the liquid reservoir 1 according to the third embodiment, and FIG. 5 is a schematic view of the bottom plate 30 side of the liquid reservoir 1 according to the third embodiment. FIG. The liquid reservoir 1 according to the third embodiment is different from that of the first embodiment described above in the connection structure between the main body housing 20 and the bottom plate 30. In addition, about the same structure as 1st Embodiment, a referential mark is quoted and the overlapping description is abbreviate | omitted.

  Specifically, in the main body housing 20, the first partition 22 formed integrally with the outer cylinder 21 has a protruding portion that protrudes from the opening end (lower end) 21 b of the outer cylinder 21 on the bottom plate 30 side. 26 is integrally formed. The length of the protruding portion 26, that is, the protruding length of the first partition portion 22 has a dimension larger than the plate thickness of the bottom plate 30. Correspondingly, an opening 31 corresponding to the shape of the protruding portion 26 protruding from the first partition portion 22 is formed in the bottom plate 30.

  In such a configuration, the main body housing 20 and the bottom plate 30 are fitted to the opening 31 on the bottom plate 30 side with the protruding portion 26 on the main body housing 20 side, and then the opening end (lower end) of the main body housing 20. 21 b is sealed by the bottom plate 30.

  Thus, according to this embodiment, both can be reliably fixed by techniques, such as welding, by making the protrusion part 26 fit in the opening 31 by the side of the baseplate 30. FIG. The connection structure between the main body housing 20 and the bottom plate 30 shown in the third embodiment can be similarly applied to the embodiments described later.

(Fourth embodiment)
FIG. 6 is a perspective view schematically showing the main body housing 20 of the liquid reservoir 1 according to the fourth embodiment. The reservoir 1 according to the fourth embodiment is different from that of the first embodiment described above in that an oil bleed is formed in the main body housing 20. In addition, about the structure same as 1st Embodiment, the overlapping description is abbreviate | omitted by quoting a reference symbol.

  In the present embodiment, the first partition 22 formed integrally with the outer cylinder 21 of the main body housing 20 is formed with a semicircular opening on the bottom plate 30 side, and an oil bleed 27 is configured by this opening. ing. When the lubricating oil contained in the refrigerant is separated in the first space 21c, the separated lubricating oil enters the third space 21e from the first space 21c by the oil bleed 27, thereby compressing together with the refrigerant. It will be returned to the machine.

  According to this configuration, since the oil bleed 27 can be configured by providing an opening in the main body housing 20, the oil bleed 27 can be realized by a simple technique.

  As shown in FIG. 6, as the oil bleed 27, in addition to forming a semicircular opening in the first partition portion 22, as shown in FIG. Part) From the side of 21b, a drill or the like may be inserted to form a through hole in the first partition part 22, and the oil bleed 27 may be constituted by this through hole. Further, as shown in FIG. 8, a through hole is formed from the side surface side of the outer cylinder 21 to the first partition 22 by a drill or the like, and the through hole of the outer cylinder 21 is closed by welding or the like. The oil bleed 27 may be configured by a through hole on the partition 22 side.

(Fifth embodiment)
FIG. 9 is a schematic perspective view schematically showing the main body housing 20 in the liquid reservoir 1 according to the fifth embodiment of the present invention. The liquid reservoir 1 according to the fifth embodiment is different from the above-described embodiment in the configuration of the second space 21 d in the main body housing 20.

  Specifically, the second space 21d functions as a space filled with the desiccant 40. The second space 21d has a space partition 28 that divides its own space into a desiccant filling space 21f filled with the desiccant 40 and a non-desiccant filling space 21g not filled with the desiccant 40. Yes. Each of the desiccant filling space 21 f and the non-desiccant filling space 21 g extends in the axial direction of the outer cylinder 21. Therefore, in the second space 21d, the refrigerant from the first space 21c joins after flowing in the desiccant filling space 21f and the non-desiccant filling space 21g in parallel and flows to the third space 21e. ing. Here, the non-desiccant filling space 21g is laid out so that the refrigerant passing through the space 21g joins the refrigerant passing through the desiccant filling space 21f on the downstream side. In other words, the desiccant filling space 21f and the third space 21e are separated by the non-desiccant filling space 21g. It should be noted that the extension length of the space partition portion 28 on the lower end side, that is, the bottom plate 30 side, is larger than that of the outer cylinder 21 so as not to hinder the flow of the refrigerant flowing through the desiccant filling space 21f. Is also set short.

  In the liquid reservoir 1 having the main body housing 20 having such a configuration, a gas-liquid mixed refrigerant sent from a heat exchanger (not shown) is introduced into the main body housing 20 from a refrigerant pipe (not shown) through an inlet port 11. . When the liquid refrigerant contained in the gas-liquid mixed refrigerant flowing in from the inflow port 11 flows into the first space 21c, the liquid refrigerant moves downward due to its own weight, and is stored below the first space 21c. Further, when the gas refrigerant contained in the gas-liquid mixed refrigerant flowing in from the inlet 11 flows into the first space 21c, it then flows into the second space 21d from the first communication portion 24. In the second space 21d, a part of the refrigerant supplied to the second space 21d flows through the desiccant filling space 21f and passes through the desiccant 40, where moisture is removed and the rest is the non-desiccant. It flows through the filling space 21g. The refrigerant that has flowed through the individual spaces 21f and 21g merges, flows into the third space 21e from the second communication portion 25, and then flows out from the outlet 12 of the top plate 10 to the outside.

  Thus, according to the present embodiment, in the second space 21d, which is a space filled with the desiccant 40, the refrigerant from the first space 21c is the desiccant-filled space 21f and the non-desiccant-filled space 21g. And flow in parallel, then merge and flow into the third space 21e. Here, the desiccant filling space 21f is separated from the third space 21e via the non-desiccant filling space 21g, and the refrigerant passing through the non-desiccant filling space 21g passes through the desiccant filling space 21f. It merges with the refrigerant on the downstream side. For this reason, even if contamination accumulates and the resistance of the desiccant filling space 21f increases, the refrigerant passage can be secured by the non-desiccant filling space 21g side. Thereby, the situation where the flow of the refrigerant is inhibited can be suppressed, and the deterioration of the system performance can be suppressed.

(Sixth embodiment)
FIG. 10 is an exploded perspective view schematically showing the overall configuration of the liquid reservoir 1 according to the sixth embodiment of the present invention. The liquid reservoir 1 mainly includes a top plate 10, a cylindrical (in this embodiment, cylindrical) main body housing 50, and a bottom plate 30.

  The top plate 10 includes an inflow port 11 through which refrigerant flows into the main body housing 50 and an outflow port 12 through which gas-liquid separated gas-liquid refrigerant flows out of the main body housing 50. It is disposed at the upper end 51 a of the main body housing 50. On the other hand, the bottom plate 30 is disposed at the lower end 51 b of the main body housing 50. The top plate 10 and the bottom plate 30 are fixed to the main body housing 50 by, for example, a technique such as welding, and thereby the internal space of the main body housing 50 is sealed.

  FIG. 11 is a perspective view schematically showing the main body housing 50. The main body housing 50 includes an outer cylinder 51 and partition parts 52 to 54 that partition the hollow space inside the outer cylinder 51 into a plurality of spaces. The outer cylinder 51 has a cylindrical shape, and an upper end 51a and a lower end 51b are opened. The partition parts 52 to 54 are integrally formed on the inner surface of the outer cylinder 51 by a technique such as extrusion molding.

  The partition parts 52 to 54 are configured by plate-like members, and extend in the axial direction in the internal space of the outer cylinder 51. By the partition parts 52 to 54, the hollow space inside the outer cylinder 51 is partitioned into four spaces 51c to 51f. Specifically, the internal space of the outer cylinder 51 is partitioned into two spaces by the first partition portion 52, and one space divided by the first partition portion 52 by the second partition portion 53. However, it is further divided into two spaces. Furthermore, one space divided by the second partition portion 53 is further partitioned into two spaces by the third partition portion 54.

  The first to fourth spaces 51 c to 51 f that are four spaces in the outer cylinder 51 are independent from each other, and each extend in the axial direction of the outer cylinder 51. The first space 51 c is a space formed by the first partition portion 52 and the inner surface of the outer cylinder 51. The first space 51c is a space where the refrigerant primarily flows in the main body housing 50, and corresponds to the inflow port 11 so that the inflow port 11 of the top plate 10 is connected. . The second space 51 d is a space formed by the first and second partition parts 52, 53 and the inner surface of the outer cylinder 51, and is the largest of the four spaces 51 c to 51 f constituting the main body housing 50. The space has a volume (that is, an area of a cross section perpendicular to the axial direction). The third space 51e is a space formed by a part of the second partition 53, the third partition 54, and the inner surface of the outer cylinder 51, and is larger than a fourth space 51f described later. The space has a volume. Further, the fourth space 51 f is a space formed by a part of the second partition 53, the third partition 54, and the inner surface of the outer cylinder 51. The fourth space 51f is a space through which the refrigerant flows out of the main body housing 50, and corresponds to the outflow port 12 so that the outflow port 12 of the top plate 10 is connected.

  The partition portions 52 to 54 have communication portions 56 to 58 that form a series of refrigerant passages that sequentially pass through the individual spaces 51c to 51f by communicating with adjacent spaces. Specifically, the extension length of the first partition portion 52 on the lower end side, that is, the bottom plate 30 side is set to be shorter than that of the outer cylinder 51, thereby the first space. A first communication portion 56 that communicates 51c and the second space 51d is configured. Further, the second partition 53 has a semicircular opening formed on the upper end side thereof, that is, the top plate 10 side, and the second space 51d and the third space 51e are communicated with each other by the opening. A second communication portion 57 is configured. Further, the third partition portion 54 has an extension length on the lower end side thereof, that is, on the bottom plate 30 side, set to be shorter than that of the outer cylinder 51, whereby the third space 51e and the third partition portion 54 are A third communication portion 58 that communicates with the four spaces 51f is configured. A series of refrigerant passages connecting the first space 51c as the starting point to the fourth space 51f through the second space 51d and the third space 51e in sequence are configured by these partition portions 52 to 54. ing.

  Here, as one of the features of this embodiment, the first space 51c into which the refrigerant is primarily introduced is filled with a small desiccant 40. In other words, the first space 51c functions as a space filled with the desiccant 40. This desiccant 40 has functions of gas-liquid separation and moisture adsorption. As described above, the desiccant 40 is present in the refrigerant circulation process in the main body housing 50 from the first space 51c to the fourth space 51f by filling the first space 51c with the desiccant 40. It will be. Here, the first communication portion 56 has a size smaller than the diameter of the desiccant 40 so that the desiccant 40 stored in the first space 51c does not enter the second space 51d. Or it is preferable to set to the shape (for example, slit shape) which suppresses approach of the desiccant 40.

  FIG. 12 is a cross-sectional view schematically showing a main body housing 50 according to the sixth embodiment. In the liquid reservoir 1 having such a configuration, the gas-liquid mixed refrigerant sent from a heat exchanger (not shown) is introduced into the main body housing 50 from a refrigerant pipe (not shown) through the inlet 11. When the liquid refrigerant contained in the gas-liquid mixed refrigerant flowing in from the inflow port 11 flows into the first space 51c, the liquid refrigerant moves downward due to its own weight, and the first space 51c via the first communication portion 56. Since the first space 51d communicates with the second space 51d, the second space 51d is stored below the first and second spaces 51c and 51b. Further, when the gas refrigerant contained in the gas-liquid mixed refrigerant flowing in from the inlet 11 flows into the first space 51c, it passes through the desiccant 40 when flowing through the first space 51c, and moisture is removed here. And flows into the second space 51d. The refrigerant supplied to the second space 51d flows from the second communication portion 57 into the third space 51e. And the refrigerant | coolant supplied to the 3rd space 51e flows in into the 4th space 51f from the 3rd communication part 58, and flows out outside from the outflow port 12 of the top plate 10 after that.

  As described above, according to the present embodiment, the first to fourth spaces 51c to 51f in which the hollow spaces inside the outer cylinder 51 constituting the main body housing 50 extend in the axial direction by the partition portions 52 to 54, respectively. It is divided into. These spaces are connected to the fourth space 51f sequentially from the first space 51c through the second space 51d and the third space 51e, and form a series of passages through which the refrigerant flows. Of the first to fourth spaces 51c to 51f, the first space 51c functions as a space filled with the desiccant 40. Here, the first to fourth spaces 51c to 51f including the space filled with the desiccant 40 can be integrally formed as an molded product inside the outer cylinder 51, such as extrusion molding. The housing 50 can be made at low cost. Thus, unlike the conventional case, there is no need to separately prepare a plate for holding the desiccant, and thus the liquid reservoir 1 having a structure in which the desiccant is held inside is provided while suppressing the manufacturing cost. Can do. Further, since the refrigerant passage and the holding space for the desiccant 40 can be used together, it is not necessary to have an extra space inside the main body housing 50, and the liquid reservoir 1 can be made compact. .

  Moreover, according to this embodiment, the inflow port 11 in the top plate 10 allows the refrigerant to flow into the first space 51c. Therefore, the refrigerant introduced from the inflow port 11 into the main body housing 50 primarily flows into the first space 51c. The refrigerant flowing from the outside has a high flow velocity and the flow is disturbed, but the refrigerant flow can be initially rectified by the small desiccant 40 by passing through the first space 51c.

  Furthermore, according to the present embodiment, the second space 51d has a larger cross-sectional area perpendicular to the axial direction than the first space 51c. For this reason, the flow velocity of the refrigerant flowing into the second space 51d from the first space 51c can be suppressed. Therefore, even if the liquid level of the liquid refrigerant stored in the lower surfaces of the first and second spaces 51c and 51b is disturbed by the flow of the gas refrigerant, this can be suppressed as much as possible.

(Seventh embodiment)
FIG. 13 is a perspective view schematically showing the main body housing 50 in the liquid reservoir 1 according to the seventh embodiment of the present invention. The liquid reservoir 1 according to the seventh embodiment is different from that of the fifth embodiment in the configuration of the first space 51 c in the main body housing 50. In addition, about the structure same as 6th Embodiment, the same code | symbol is quoted and the overlapping description is abbreviate | omitted.

  As one of the features of this embodiment, the first partition portion 52 that partitions the first space 51c and the second space 51d has an extended length on the upper end side, that is, on the top plate 10 side. It is set shorter than that of the outer cylinder 51. That is, on the upper end 51a side of the outer cylinder 51, the first space 51c and the second space 51d are spatially shared. Moreover, the 1st space 51c functions as a space with which the desiccant 40 is filled similarly to 6th Embodiment. The first space 51c is provided with a space partition 59 that partitions its own space into a desiccant filling space 51g filled with the desiccant 40 and a non-desiccant filling space 51h not filled with the desiccant 40. ing. The desiccant filling space 51g and the non-desiccant filling space 51h are each extended in the axial direction of the outer cylinder 51 by a plate-shaped space partition 59. The inlet 11 of the top plate 10 is provided in a position corresponding to the first space 51c. In the present embodiment, the inlet 11 includes both the desiccant filling space 51g and the non-desiccant filling space 51h. The refrigerant is allowed to flow into the tank.

  Thus, according to the present embodiment, the upper end portion side of the first partition portion 52 is set shorter than the outer cylinder 51. Therefore, among the gas-liquid mixed refrigerant introduced into the first space 51c, the gas refrigerant is the upper end side of the first partition 52 by the liquid refrigerant stored in the first and second spaces 51c and 51b. Flows into the second space 51d through the first space. Of the gas-liquid mixed refrigerant introduced into the first space 51 c, the liquid refrigerant flows into the second space 51 d via the first communication portion 56 on the lower end side of the first partition 52. To do. Thereby, it is not necessary to allow the stored liquid refrigerant to flow and flow the gas refrigerant to the subsequent space, and the liquid level of the liquid refrigerant can be prevented from being disturbed.

  Further, according to the present embodiment, the refrigerant from the inlet 11 flows in parallel to both the desiccant filling space 51g and the non-desiccant filling space 51h. Therefore, even if contamination accumulates and the resistance of the desiccant filling space 51g increases, a refrigerant passage can be secured by the non-desiccant filling space 51h side. Thereby, the situation where the flow of the refrigerant is inhibited can be suppressed, and the deterioration of the system performance can be suppressed.

The disassembled perspective view which shows typically the whole structure of the liquid reservoir 1 concerning 1st Embodiment. The schematic diagram which shows the main body housing 20 in the liquid reservoir 1 concerning 1st Embodiment. The perspective view which shows typically the main body housing 20 of the liquid reservoir 1 concerning 2nd Embodiment. The disassembled perspective view which shows typically the structure of the liquid reservoir 1 concerning 3rd Embodiment. The side view which shows typically the baseplate 30 side of the liquid reservoir 1 concerning 3rd Embodiment. The perspective view which shows typically the main body housing 20 of the liquid reservoir 1 concerning 4th Embodiment. Explanatory drawing which shows the modification of oil bleed 27 Explanatory drawing which shows the modification of oil bleed 27 The schematic perspective view which shows typically the main body housing 20 in the liquid reservoir 1 concerning 5th Embodiment. The disassembled perspective view which shows typically the whole structure of the liquid reservoir 1 concerning 6th Embodiment. The perspective view which shows typically the main body housing 50 concerning 6th Embodiment. Sectional drawing which shows typically the liquid reservoir 1 concerning 6th Embodiment The perspective view which shows typically the main body housing 50 in the liquid reservoir 1 concerning 7th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid storage device 10 Top plate 11 Inlet 12 Outlet 20 Main body housing 21 Outer cylinder 21a Open end (upper end)
21b Open end (lower end)
21c 1st space 21d 2nd space 21e 3rd space 21f Desiccant filling space 21g Non-desiccant filling space 22 1st partition part 23 2nd partition part 24 1st communication part 25 2nd communication part 26 Protruding portion 27 Oil bleed 28 Space partition portion 30 Bottom plate 31 Opening 40 Desiccant 50 Main body housing 51 Outer cylinder 51a Upper end portion 51b Lower end portion 51c First space 51d Second space 51e Third space 51f Fourth space 51g Desiccant filling space 51h Non-desiccant filling space 52 First partition portion 53 Second partition portion 54 Third partition portion 56 First communication portion 57 Second communication portion 58 Third communication portion 59 Space partition portion

Claims (10)

In the reservoir (1) used for the refrigeration cycle,
A cylindrical outer cylinder (21);
The hollow space inside the outer cylinder is partitioned into first to third spaces (21c to 21e) each extending in the axial direction by a plate-like member integrally formed on the inner surface of the outer cylinder (21). Partitions (22, 23);
A communication part (24, 23) formed in the partition part (22, 23) for communicating the first space (21c) and the third space (21e) via the second space (21d). 25)
The outer cylinder (21) includes an inlet (11) through which refrigerant flows into the first space (21c) and an outlet (12) through which refrigerant flows out of the third space (21e). A top plate (10) for sealing one open end (21a) of
A bottom plate (30) for sealing the other open end (21b) of the outer cylinder (21),
The liquid reservoir (1), wherein the second space (21d) functions as a desiccant filling space filled with a desiccant (40).   The liquid reservoir (1) according to claim 1, wherein each of the communication parts (24, 25) includes a plurality of openings each having a width smaller than the diameter of the desiccant (40). 1). The partition (22, 23) is formed so as to protrude from the bottom plate (30),
The bottom plate (30) has an opening (31) corresponding in shape to the partition portion (22, 23), and the protruding portion (26) of the partition portion (22, 23) in the opening (31). The liquid reservoir (1) according to claim 1 or 2, wherein the fitting part is welded and the fitting part is welded.   The partition portions (22, 23) communicate with the first space (21c) and the second space (21d) at the end on the bottom plate (30) side, and oil bleeds (27 A reservoir (1) according to any one of claims 1 to 3, characterized in that an opening is formed. In the reservoir used for the refrigeration cycle,
A cylindrical outer cylinder (51);
A partition part (52) that partitions the hollow space inside the outer cylinder into a plurality of spaces (51c to 51f) each extending in the axial direction by a plate-like member integrally formed on the inner side surface of the outer cylinder (51). ~ 54),
A ceiling (11a) for sealing the upper end (51a) of the outer cylinder (51) is provided with an inlet (11) through which the refrigerant flows into the outer cylinder and an outlet (12) through which the refrigerant flows out of the outer cylinder. A plate (10);
A bottom plate (30) for sealing the lower end (51b) of the outer cylinder (51),
The partition portions (52 to 54) have communication portions (56 to 58) that form a series of refrigerant passages that sequentially pass through the individual spaces (51c to 51f) by communicating with adjacent spaces. And
Of the plurality of spaces (51c to 51f), a first space (51c) serving as a starting point of a series of passages functions as a space filled with a desiccant (40). ).   The liquid reservoir (1) according to claim 5, wherein the inlet (11) allows a refrigerant to flow into the first space (51c).   The second space (51d) following the first space (51c) has a larger cross-sectional area perpendicular to the axial direction than the first space (51c). 5. A reservoir (1) according to claim 5 or claim 6.   The partition part (52) partitioning the first space (51c) and the second space (51d) following the first space (51c) has an extension length on the upper end side of the outer cylinder ( The reservoir (1) according to any one of claims 5 to 7, characterized in that it is set shorter than the upper end (51a) of 51). The first space (51c) has its own space extending in the axial direction, the desiccant filling space (51g) filled with the desiccant (40), and the desiccant (40) not filled. A space partition part (59) for partitioning with the non-desiccant filling space (51h),
The said inflow port (11) makes a refrigerant | coolant flow in both the said desiccant filling space (51g) and the said non-desiccant filling space (51h), It is any one of Claim 5 to 8 characterized by the above-mentioned. The described reservoir (1). In the reservoir used for the refrigeration cycle,
A cylindrical outer cylinder (21);
The hollow space inside the outer cylinder is partitioned into first to third spaces (21c to 21e) each extending in the axial direction by a plate-like member integrally formed on the inner surface of the outer cylinder (21). Partitions (22, 23);
An inlet (11) through which the refrigerant flows into the outer cylinder and an outlet (12) through which the refrigerant flows out of the outer cylinder are provided, and one open end (21a) of the outer cylinder (21) is sealed. A top plate (10) to be stopped;
A bottom plate (30) for sealing the other open end (21b) of the outer cylinder (21),
The partition portions (22, 23) are connected to each other in a series of spaces from the first space (21c) to the third space (21e) via the second space (21d). Having communication parts (24, 25) constituting the passage,
The second space (21d) functions as a space filled with the desiccant (40), and the desiccant filled with the desiccant (40) that extends in the axial direction of the own space. It has a space partition (28) that partitions the filling space (21f) and the non-desiccant filling space (21g) that is not filled with the desiccant (40), and the refrigerant from the first space (21c) After flowing separately into the desiccant filling space (21f) and the non-desiccant filling space (21g), they merge to flow into the third space (21e),
The reservoir (1), wherein the desiccant filling space (21f) is separated from the third space (21e) via the non-desiccant filling space (21g).

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