JP2020051661A - Liquid receiver and condenser using the same - Google Patents

Abstract

To provide a liquid receiver that does not require the use of an O-ring that has a risk of being cut or damaged.SOLUTION: A liquid receiver (4) includes a liquid receiver main body 23 having an upper end opened and a lower end closed, a plug 24 closing an upper end opening in the liquid receiver main body 23, and a partition member 27 interposed between the closed end of the liquid receiver main body 23 and the plug 24. The liquid receiver 4 has a first space 25 located between the closed end of the liquid receiver main body 23 and the partition member 27, and a second space 26 located between the plug 24 and the partition member 27. A female screw 35 for a partition member is formed in the liquid receiver main body 23, and a male screw 36 formed on the outer peripheral surface of the partition member 27 is screwed into the female screw 35 for the partition member. The ridge of the male screw 36 of the partition member 27 is crushed and brought into close contact with the bottom the female screw 35 for the partition member, so that a gap between the first space 25 and the second space 26 is sealed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a liquid receiver that separates a gas-liquid mixed-phase refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant, and a condenser using the same, for example, in a car air conditioner that is a refrigeration cycle mounted on an automobile.

  In the claims, the upper and lower parts in FIG. 1 are referred to as upper and lower parts.

  In this specification, the term "liquid-phase refrigerant" includes a liquid-phase main-phase refrigerant mixed with a small amount of a gas-phase refrigerant.

  As a condenser for a car air conditioner, a condenser, a supercooling section provided above the condenser, and a liquid receiver provided between the condenser and the supercooler and having a longitudinal direction directed vertically. A condenser outlet header is provided on the receiver side of the condenser for the refrigerant to flow out of the condenser to the receiver, and is located above the condenser outlet header on the receiver side of the supercooler. And a supercooling section inlet header through which the refrigerant flows from the receiver is provided. The receiver is detachable in the receiver main body having the upper end opened and the lower end closed, and the upper end opening of the receiver main body. A plug fitted into the receiver to close the upper end opening of the receiver body, and a partition member disposed in an intermediate portion between the closed end and the plug in the receiver body. Inside, the refrigerant is located between the closed end (lower end) of the receiver main body and the partition member. A first space that flows in and a second space that is located between the plug and the partition member and through which the refrigerant flows out are formed, and the first space communicates with the outer wall of the receiver main body and the refrigerant condenses. A refrigerant inflow hole that flows into the first space from the unit outlet header, and a refrigerant outflow hole that allows the second space to communicate with the outside and allows the refrigerant to flow out of the second space to the supercooling unit inlet header. The space between the space and the second space is sealed by an inner O-ring disposed between the outer peripheral surface of the partition member and the inner peripheral surface of the peripheral wall of the liquid receiver main body. The space is sealed by an outer O-ring disposed between the outer peripheral surface of the plug and the inner peripheral surface of the peripheral wall of the receiver main body, so that the lower part of the first space and the second space can pass through the first space. And a suction pipe for guiding the refrigerant flowing into the first space from the refrigerant inflow hole to the second space is arranged. The upper end of the suction pipe is fixed to the partition member, and the refrigerant flowing out of the condensation section outlet header of the condensation section passes through the first space of the receiver, the suction pipe and the second space of the receiver, and passes through the supercooling section. A condenser designed to flow into a cooling unit inlet header is known (see Patent Document 1).

  In the condenser receiver described in Patent Document 1, after the two O-rings are mounted on the outer periphery of the partition member and the plug, the partition member is inserted into the receiver body, and the plug is further inserted into the receiver body. It has become so.

  However, when the inner O-ring passes through the refrigerant outflow hole, it may enter the refrigerant outflow hole, and the inner O-ring may be cut or may be damaged if not cut.

JP 2017-20700 A

  SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a liquid receiver which does not need to use an O-ring which may be cut or damaged, and a capacitor using the same.

  The present invention has the following aspects to achieve the above object.

1) a liquid receiver main body having a tubular shape having one end opened and the other end closed; and a plug fitted into the liquid receiver main body through the one end opening to close the one end opening of the liquid receiver main body. A partition member disposed in an intermediate portion between the closed end and the plug in the receiver main body, and the refrigerant is located between the closed end of the receiver main body and the partition member and the refrigerant. Is formed between the plug and the partition member, and a second space is formed between the plug and the partition member, and the refrigerant flows out. A liquid receiver in which a refrigerant inflow hole flowing into the first space and a refrigerant outflow hole through which the second space communicates to the outside and the refrigerant flows out of the second space are formed,
A female thread for the partition member is formed on the inner peripheral surface of the peripheral wall of the receiver body, and a screw is formed on the outer peripheral surface of the partition member. A liquid receiver in which the first space and the second space are sealed by tightly fitting the female screw for the partition member of the liquid receiver body and the male screw of the partition member by being screwed into the screw.

  2) At least the portion of the entire receiver body where the female thread for the partition member is formed is made of metal and the partition member is made of plastic. The liquid receiver according to 1) above, which is in close contact with the bottom of the female thread for a partition member.

  3) In the state before the external thread of the partition member is screwed into the internal thread for the partition member of the receiver main body, the root diameter of the internal thread for the partition member of the receiver main body is larger than the outer diameter of the external thread of the partition member. The liquid receiver according to the above 2), wherein the inner diameter of the female screw for the partition member is smaller than the root diameter of the external thread of the partition member.

  4) Before the male screw of the partition member is screwed into the female screw for the partition member of the receiver body, the root diameter of the female screw for the partition member of the receiver body and the outer diameter of the male screw of the partition member. The receiver according to the above item 3), wherein the difference between the two is 0.1 to 0.3 mm.

  5) The volume of the gap of one pitch between the female thread for the partition member of the receiver body and the external thread of the partition member is larger than the volume of the crushed portion of the thread of the external thread of the partition member. The receiver according to 3) or 4) above.

  6) A female screw for the plug is formed on the inner peripheral surface of the peripheral wall of the receiver body on the opening end side with respect to the female screw for the partition member, and a screw is formed on the outer peripheral surface of the plug. The internal thread of the female thread for the plug of the receiver is larger than the root diameter of the thread of the partition member. A liquid receiver according to any one of the above.

  7) The liquid receiver according to 6) above, wherein the internal diameter of the female thread for the plug of the liquid receiver body is larger than the external diameter of the external thread of the partition member.

  8) The liquid receiver according to the above 6) or 7), wherein the partition member and the plug are separately formed, and the partition member and the plug are separated from each other.

  9) The liquid receiver according to the above 6) or 7), wherein the partition member and the plug are connected by a plurality of connection members provided integrally with the partition member and the plug in the second space.

  10) The partition member and the plug are provided on one synthetic resin cylindrical member at intervals in the longitudinal direction of the cylindrical member, and are located at least one diameter between the partition member and the plug in the cylindrical member. Is formed, and the inside of the through hole is a second space, and the second space communicates with the refrigerant outflow hole of the receiver main body through an opening at one end of the through hole. The liquid receiver according to the above 6) or 7).

  11) The outer diameter of the cylindrical member is equal over the entire length, and one male screw is formed on the outer peripheral surface of the cylindrical member over the entire length, and the male screw is formed at a portion serving as a partition member of the cylindrical member. The first part is screwed into the female thread for the partition member of the receiver main body, and the second part, which is also formed in a part to be a plug, is screwed into the female thread for the plug of the receiver main body. The liquid receiver according to 10).

  12) The columnar member is stepped and has a small diameter portion and a large diameter portion, a partition member is provided in the small diameter portion, a plug is provided in the large diameter portion, and the inside is the second space. The outer peripheral surface of the small diameter portion and the outer peripheral surface of the large diameter portion of the cylindrical member are each formed with one male screw over the entire length, and the small diameter male screw is a partition member of the receiver main body. The liquid receiver according to the above item 10), wherein a part of the large-diameter external thread formed in a part to be a plug is screw-fitted to a female screw for a plug of the liquid receiver body.

13) A condensing section, a subcooling section provided above the condensing section, and a liquid receiver provided between the condensing section and the subcooling section. A condenser that flows into the subcooling section via a liquid container,
The liquid receiver comprises the liquid receiver described in any one of the above 1) to 12), and upper and lower ends are open in the first space of the liquid receiver, and the lower end opening communicates with the first space. In addition, a suction pipe whose upper end opening communicates with the second space is arranged, and a through-hole is formed in the partition member that extends vertically and passes through the first space and the second space, and the upper end of the suction pipe is penetrated by the partition member. Refrigerant inserted into the hole and fixed to the partition member, flowing from the condenser through the refrigerant inflow hole into the first space of the receiver, enters the second space through the suction pipe, passes through the refrigerant outflow hole, A condenser designed to flow to the subcooling section.

  According to the liquid receivers of 1) to 12) above, the female screw for the partition member is formed on the inner peripheral surface of the peripheral wall of the liquid receiver main body, and the screw is formed on the outer peripheral surface of the partition member. The first space and the second space are formed by fitting the male screw of the member into the female screw for the partition member of the receiver main body so that the female screw for the partition member of the receiver main body and the male screw of the partition member come into close contact with each other. Between the first space and the second space in the liquid receiver, as in the liquid receiver used in the condenser described in Patent Document 1. There is no need for an O-ring that could be broken or damaged used to seal the seal. In addition, the number of parts is reduced.

  According to the liquid receiver of the above 2), the space between the first space and the second space can be effectively sealed with a relatively simple configuration.

  According to the liquid receivers of the above 3) to 5), the thread of the external thread of the partition member can be reliably crushed and brought into close contact with the bottom of the female thread for the partition member of the liquid receiver body.

  According to the liquid receiver of the above 6) and 7), when the partition member is inserted into the liquid receiver main body and the external thread is screwed into the female screw for the partition member and the partition member is assembled in the liquid receiver main body, The thread of the external thread of the partition member is not crushed by the root of the female screw for the plug of the liquid receiver main body, and the assemblability of the partition member is improved.

  According to the liquid receivers of the above 9) to 12), the number of parts can be reduced, and the number of steps when assembling the partition member and the plug to the liquid receiver main body can be reduced.

It is a front view which shows the whole structure of the condenser using the receiver of this invention concretely. FIG. 2 is a front view schematically showing the capacitor shown in FIG. 1. FIG. 2 is a partially cutaway vertical cross-sectional view seen from the front showing an enlarged view of a liquid receiver of the condenser shown in FIG. 1 and a header tank to which the liquid receiver is fixed. It is a figure which expands and shows the screwing part of the partition member external thread and the partition member internal thread in the receiver of the capacitor shown in FIG. It is the elements on larger scale of FIG. FIG. 4 is a diagram corresponding to FIG. 3 and showing a second embodiment of the liquid receiver of the present invention used in the condenser shown in FIG. 1. FIG. 5 is a diagram corresponding to FIG. 3 and showing a third embodiment of the liquid receiver of the present invention used in the condenser shown in FIG. 1. It is a perspective view which shows the column member which comprises the partition member and plug of the liquid receiver shown in FIG. FIG. 6 is a diagram corresponding to FIG. 3 and illustrating a fourth embodiment of the liquid receiver of the present invention used in the condenser illustrated in FIG. 1.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The same components and portions are denoted by the same reference symbols throughout the drawings.

  In the following description, the left and right in FIG.

  In the following description, the term “aluminum” includes an aluminum alloy in addition to pure aluminum.

  1 specifically shows the entire configuration of a capacitor using the liquid receiver of the present invention, FIG. 2 schematically shows the capacitor of FIG. 1, and FIGS. 3 to 5 show the configuration of the main part of the capacitor of FIG. Is shown. In FIG. 2, the illustration of the individual heat exchange tubes is omitted, and the illustration of the corrugated fin, the side plate, the refrigerant inlet member, and the refrigerant outlet member is also omitted.

  In FIG. 1 and FIG. 2, the condenser (1) includes a condenser (2), a supercooler (3) provided above the condenser (2), and a condenser with the longitudinal direction directed vertically. The gas-liquid mixed-phase refrigerant provided between the section (2) and the subcooling section (3) and condensed in the condenser section (2) is separated into a gas-phase refrigerant and a liquid-phase refrigerant, and the liquid-phase refrigerant is stored. And a tank-shaped receiver (4) having a gas-liquid separation function of supplying a liquid-phase refrigerant to the supercooling section (3).

  The condenser (1) has a plurality of aluminum flat heat exchange tubes (5) arranged in the vertical direction with the width direction oriented in the ventilation direction and the longitudinal direction oriented in the left-right direction, and in the longitudinal direction. With two aluminum header tanks (6) and (7) that are arranged at intervals in the left and right direction and that the left and right ends of the heat exchange tube (5) are joined by brazing material An aluminum corrugated fin (8) disposed between the heat exchange tubes (5) and outside the heat exchange tubes (5) at the upper and lower ends and joined to the heat exchange tubes (5) by brazing material; An aluminum side plate (9) disposed outside the corrugated fin (6) and joined to the corrugated fin (8) by a brazing material. Hereinafter, the joining with the brazing material is referred to as brazing.

  The condenser (2) of the condenser (1) is provided with at least one, here one heat exchange path (P1), composed of a plurality of heat exchange tubes (5) arranged vertically one above the other. The supercooling section (3) of the condenser (1) is provided with at least one, here one heat exchange path (P2), composed of a plurality of heat exchange tubes (5) arranged vertically one above the other. ing. The refrigerant flow direction of all the heat exchange tubes (5) constituting each heat exchange path (P1) (P2) is the same, and the heat flow of two adjacent heat exchange paths (P1) (P2) is The refrigerant flow direction of the exchange pipe (5) is different. Here, the heat exchange path (P1) of the condensing section (2) is referred to as a first heat exchange path, and the heat exchange path (P2) of the subcooling section (3) is referred to as a second heat exchange path.

  The inside of both header tanks (6) and (7) is an aluminum partition plate provided between the first heat exchange path (P1) and the second heat exchange path (P2) and at the same height position on the upper side. 11) is divided into two sections (6a) (6b) (7a) (7b) arranged in the vertical direction, and the portion of the condenser (1) located below the two partition plates (11) is a condensing part. (2), and a portion located above both partition plates (11) is a supercooling section (3).

  A section (6a) below the partition plate (11) in the right header tank (6) is a condenser inlet through which the upstream end of the heat exchange pipe (5) of the first heat exchange path (P1) flows in the refrigerant flow direction. The upper section (6b) is also a header (12), and the subcooling section outlet header (13) through which the downstream end of the heat exchange pipe (5) of the second heat exchange path (P2) flows in the refrigerant flow direction. ). The section (7a) below the partition plate (11) in the left header tank (7) is condensed with the downstream end of the heat exchange pipe (5) of the first heat exchange path (P1) in the refrigerant flow direction. The sub-cooling section inlet header through which the upstream end of the heat exchange pipe (5) of the second heat exchange path (P2) communicates with the upstream side in the refrigerant flow direction is also provided. (15).

  A refrigerant inlet (16) is formed at a vertically intermediate portion of the condensation section inlet header (12) of the right header tank (6), and an aluminum refrigerant inlet member ( 17) are joined. Further, a refrigerant outlet (18) is formed in the supercooling section outlet header (13) of the right header tank (6), and an aluminum refrigerant outlet member (19) communicating with the refrigerant outlet (18) is formed in the right header tank (6). Are joined. A header-side refrigerant outlet (21) is formed in a portion of the left header tank (7) near the lower end of the condensing part outlet header (14), and a header-side refrigerant flow is also provided in the lower part of the subcooling part inlet header (15). An inlet (22) is formed.

  As shown in FIG. 3, the liquid receiver (4) is a cylindrical liquid receiver having an axial direction facing up and down and having one end, here the upper end is open and the other end, here the lower end is closed. A main body (23), a synthetic resin plug (24) removably fitted into the receiver main body (23) through the upper end opening and closing the upper end opening of the receiver main body (23); A synthetic resin partition member (27) disposed at an intermediate portion between the closed end and the plug (24) in the main body (23).

  A first space into which the refrigerant flows from the condenser outlet header (14) into a portion between the lower end (closed end) of the receiver main body (23) and the partition member (27) inside the receiver (4). (25) is formed, and a second space (26) through which the refrigerant flows out to the subcooling section inlet header (15) is formed in a portion between the plug (24) and the partition member (27). The two spaces (25) and (26) are separated from each other by a partition member (27).

  The upper end of the first space (25) is located near the upper end of the condensing section outlet header (14), and the lower end of the second space (26) is located near the lower end of the subcooling section inlet header (15). In the peripheral wall of the receiver main body (23), the first space (25) is communicated with the header-side refrigerant outlet (21) of the condenser outlet header (14), and the refrigerant flows from the condenser outlet header (14) to the first space. The refrigerant inflow hole (28) flowing into the space (25) and the second space (26) are communicated with the header-side refrigerant inflow port (22) of the subcooler inlet header (15), and the refrigerant flows into the second space (26). ) Is formed into a refrigerant outflow hole (29) for flowing out of the subcooling section inlet header (15).

  The liquid receiver main body (23) is arranged with the longitudinal direction facing up and down, and a cylindrical aluminum tank member (31) having upper and lower ends open, and brazed to the lower end of the tank member (31). An aluminum closing member (32) for closing the lower end opening, and a cylindrical end member (33) brazed to the upper end of the tank member (31), and whose longitudinal direction is oriented in the vertical direction and whose upper and lower ends are open. Become. A refrigerant inflow hole (28) is formed in a portion of the receiver body (23) near the lower end of the tank member (31), and is located closer to the partition plate (11) of the end member (33) of the receiver body (23). A refrigerant outflow hole (29) is formed at an upper height position. The tank member (31) and the end member (33) of the receiver main body (23) are brazed to the left header tank (6).

  In the end member (33) of the receiver body (23), a separately formed plug (24) and a partition member (27) are separated from each other in the vertical direction (the longitudinal direction of the end member (33)). Are located. The plug (24) is disposed above the refrigerant outflow hole (29), the partition member (27) is disposed below the refrigerant outflow hole (29), and the first space (25) is The second space (26) is formed to communicate with the refrigerant inflow hole (28) below the (27), so that the second space (26) communicates with the refrigerant outflow hole (29) between the plug (24) and the partition member (27). Is formed. The partition member (27) is formed with a through hole (34) extending vertically and passing through the first space (25) and the second space (26).

  A female screw (35) for a partition member is formed at a portion of the inner peripheral surface of the peripheral wall of the end member (33) below the refrigerant outflow hole (29) (closed end side of the receiver main body (23)). A thread (36) is formed on the outer peripheral surface of the partition member (27), and the external thread (36) of the partition member (27) is screwed into the female thread (35) for the partition member of the end member (33). As a result, the partition member (27) is fixed to the receiver main body (23). Further, a female screw (37) for a plug is formed in a portion of the inner peripheral surface of the peripheral wall of the end member (33) above the refrigerant outflow hole (29) (opening end side of the receiver main body (23)). A screw (38) is formed on the outer peripheral surface of the plug (24), and the male screw (38) of the plug (24) is screwed into the female screw (37) of the end member (33). A plug (24) is fixed to the receiver main body (23). An annular groove (39) is formed in a portion of the outer peripheral surface of the plug (24) above the male screw (38), and the second space is formed by an O-ring (41) fitted in the annular groove (39). There is a seal between (26) and the outside.

  As shown in FIG. 4, the ridge (361) of the external thread (36) of the partition member (27) is crushed and closely contacts the bottom (351) of the female thread (35) for the partition member of the receiver body (23). This seals the space between the first space (25) and the second space (26) in the liquid receiver (4). In FIG. 4, the outline of the crushed portion (361a) of the ridge (361) of the male screw (36) is shown by an imaginary line, and the crushed portion is hatched. In the state before the male screw (36) of the partition member (27) is screwed into the female screw (35) for the partition member of the receiver body (23) (the state before the ridge (361) is crushed), The root diameter (D1) of the partition member internal thread (35) of the liquid container body (23) is smaller than the outer diameter (d1) of the partition member (27) external thread (36), and the partition member internal thread ( The inner diameter (D2) of the partition member (27) is larger than the root diameter (d2) of the external thread (36) of the partition member (27). In addition, before the male screw (36) of the partition member (27) is screwed into the female screw (35) of the receiver body (23), the female part of the receiver body (23) is used. The difference between the root diameter (D1) of the screw (35) and the outer diameter (d1) of the external thread (36) of the partition member (27) is preferably 0.1 to 0.3 mm. Further, a gap (42) for one pitch between the female thread (35) for the partition member of the receiver body (23) and the external thread (36) of the partition member (27), that is, the straight line (L1) and the straight line (L1) (L2), the volume of the gap (42) is greater than the volume of the crushed portion (361a) of the ridge (361) of the external thread (36) of the partition member (27). Is preferred.

  As shown in FIG. 5, the internal diameter (D3) of the female screw (37) for the plug of the receiver body (23) is larger than the root diameter (d2) of the external thread (36) of the partition member (27). Preferably, the inner diameter (D3) of the female screw (37) for the plug of the liquid receiver main body (23) is in a state before being screwed into the female screw (35) for the partition member of the liquid main body (23). It is desirable that the outer diameter (d1) of the external thread (36) of the partition member (27) is larger than the root diameter (D1) of the female thread (35) for the partition member.

  A suction pipe having a circular cross section and having a first space (25) in a liquid receiver (4), which is open at both upper and lower ends and allows a portion near the lower end of the first space (25) to pass through the second space (26). (43) is arranged. The upper end of the suction pipe (43) is fitted into the through hole (34) of the partition member (27) and is fixed to the partition member (27). At the lower end of the suction pipe (43), a foreign matter removing member (44) for removing foreign matter from the refrigerant flowing into the suction pipe (43) from the first space (25) is provided. In addition, a desiccant bag (45) having air permeability and liquid permeability and containing a desiccant is disposed in the first space (25).

  The condenser (1) forms a refrigeration cycle together with a compressor, an expansion valve (decompressor) and an evaporator, and is mounted on a vehicle as a car air conditioner.

  In the condenser (1) having the above-described configuration, the high-temperature and high-pressure gas-phase refrigerant compressed by the compressor passes through the refrigerant inlet member (17) and the refrigerant inlet (16), and enters the condenser inlet header of the right header tank (6). (12) and is condensed while flowing to the left in the heat exchange pipe (5) of the first heat exchange path (P1), and is condensed in the condensing section outlet header (14) of the left header tank (7). Flows into. The refrigerant flowing into the condensing portion outlet header (14) of the left header tank (7) passes through the header side refrigerant outlet (21) and the refrigerant inflow hole (28), and enters the first space in the receiver (4). Enter (25).

  The refrigerant that has flowed into the first space (25) in the receiver (4) is a gas-liquid mixed-phase refrigerant, and the liquid-phase refrigerant of the gas-liquid mixed-phase refrigerant accumulates in the lower part of the receiver (4) due to gravity. . The liquid-phase refrigerant accumulated in the lower part of the liquid receiver (4) enters the suction pipe (43) after passing through the foreign matter removing member (45) to remove foreign matter, and passes through the suction pipe (43). It flows into the second space (26).

  The liquid-phase refrigerant flowing into the second space (26) in the liquid receiver (4) passes through the refrigerant outlet hole (29) and the header-side refrigerant inlet (22), and is supplied to the supercooling section of the left header tank (7). Enter the entrance header (15).

  The liquid-phase refrigerant entering the supercooling section inlet header (15) of the left header tank (7) is supercooled while flowing to the right in the heat exchange pipe (5) of the second heat exchange path (P2). After that, the refrigerant enters the subcooler outlet header (13) of the right header tank (6), flows out through the refrigerant outlet (18) and the refrigerant outlet member (19), and is sent to the evaporator via the expansion valve.

  6 to 9 show second to fourth embodiments of the liquid receiver of the present invention used for the condenser shown in FIG.

  In the case of the liquid receiver (50) shown in FIG. 6, the partition member (27) and the plug (24) are provided integrally with the partition member (27) and the plug (24) in the second space (26). They are connected by a plurality of connecting members (51). Although not shown in detail, the connecting member (51) has an arcuate horizontal cross section, and is provided integrally with the partition member (27) and the plug (24) at intervals in the circumferential direction. The radially outer surface of all the connecting members (51) is located on one circumference in a horizontal section. The diameter of the circumference is preferably smaller than the root diameter of the external thread (36) of the partition member (27).

  Other configurations are the same as those of the liquid receiver (4) shown in FIGS.

  In the case of the liquid receiver (60) shown in FIGS. 7 and 8, a partition member for dividing the inside of the liquid receiver (60) into a first space (25) into which the refrigerant flows and a second space (26) through which the refrigerant flows out. (61) and a plug (62) for closing the open end of the liquid receiver main body (23) are provided on a single synthetic resin cylindrical member (63) at intervals in the longitudinal direction of the cylindrical member (63). Is provided.

  At least one, here two through-holes (64) (65) located on two diameters orthogonal to each other, are formed in a portion of the cylindrical member (63) between the partition member (61) and the plug (62). While being formed, the inside of the through holes (64) and (65) is a second space (26). The second space (26) communicates with the refrigerant outlet hole (29) of the receiver main body (23) through an opening (64a) at one end of one of the through holes (64).

  The outer diameter of the cylindrical member (63) is equal over the entire length, and one male screw (66) is formed on the outer peripheral surface of the cylindrical member (63) over the entire length. A first portion (66a) formed at a portion of the male screw (66) that becomes a partition member (61) of the cylindrical member (63) is used as a partition member for the end member (33) of the receiver body (23). A second part (66b), which is screw-fitted to the screw (35) and is also formed in a part to be a plug (62), is a female screw (37) for an end member (33) of the receiver body (23). It is screwed into.

  Although not shown, as in the case shown in FIG. 4, the mountain of the first portion (66a) of the male screw (66) is crushed and the partition member of the end member (33) of the liquid receiver main body (23). It is in close contact with the valley bottom (351) of the female screw (35), thereby sealing between the first space (25) and the second space (26) in the liquid receiver (4). In a state before the first portion (66a) of the male screw (66) is screwed into the female screw (35) for the partition member and the second portion (66b) is screwed into the female screw (37) for the plug. The diameter of the female thread (35) for the partition member of the receiver body (23) is smaller than the outer diameter of the first portion (66a) of the male screw (66), and the female thread (35) for the partition member is The inner diameter is larger than the root diameter of the first portion (66a) of the male screw (66). The first portion (66a) of the male screw (66) is screwed into the female screw (35) for the partition member, and the second portion (66b) is in a state before being screwed into the female screw (37) for the plug. The difference between the root diameter of the female screw (35) for the partition member and the outer diameter of the first portion (66a) of the male screw (66) is preferably 0.1 to 0.3 mm. Further, the volume of the gap of one pitch between the partition member internal thread (35) of the receiver main body (23) and the first portion (66a) of the external thread (66) is equal to the first thread of the external thread (66). It is preferable that the size be equal to or larger than the volume of the crushed portion in the mountain of one portion (66a).

  Further, as in the case shown in FIG. 5, the inner diameter of the female screw (37) for the plug of the receiver body (23) is larger than the root diameter of the first portion (66a) of the male screw (66). Preferably, the internal diameter of the female screw (37) for the plug of the receiver body (23) is in the state before being screwed into the female screw (35) for the partition member of the receiver body (23). Preferably, it is larger than the outer diameter of the first portion (66a) of the screw (66).

  Other configurations are the same as those of the liquid receiver (4) shown in FIGS.

  In the case of the liquid receiver (70) shown in FIG. 9, a partition member (71) that divides the inside of the liquid receiver (70) into a first space (25) into which the refrigerant flows and a second space (26) from which the refrigerant flows out. And a plug (72) for closing the open end of the liquid receiver body (23) are provided on one synthetic resin cylindrical member (73) at intervals in the longitudinal direction of the cylindrical member (73). I have.

  The cylindrical member (73) is stepped and includes a lower small-diameter portion (73a) and an upper large-diameter portion (73b) .The small-diameter portion (73a) is provided with a partition member (71). A plug (72) is provided above (73b). At the lower end of the large-diameter portion (73b), that is, at a portion between the partition member (71) and the plug (72) in the cylindrical member (73), at least one is located on two diameters perpendicular to each other here. Two through holes (74) and (75) are formed, and the inside of the through holes (74) and (75) is a second space (26). The second space (26) communicates with the refrigerant outlet hole (29) of the receiver main body (23) through an opening (74a) at one end of one of the through holes (74).

  One male screw (76) over the entire length is formed on the outer peripheral surface of the small diameter portion (73a) of the cylindrical member (73), and one male screw (77) over the entire length is formed on the outer peripheral surface of the large diameter portion (73b). Is formed. The male screw (76) of the small diameter portion (73a) of the cylindrical member (73) is screwed into the female screw (35) for the partition member of the end member (33) of the receiver body (23), and the large diameter portion ( 73b) A part (77a) formed on the part of the male screw (77) that becomes the plug (72) is screwed into the female screw (37) of the end member (33) of the receiver body (23). Have been.

  Although not shown, as in the case shown in FIG. 4, the ridge of the external thread (76) of the small-diameter portion (73a) is crushed and the end member (33) of the receiver main body (23) is used for the partition member. It is in close contact with the bottom (351) of the female screw (35), thereby sealing between the first space (25) and the second space (26) in the liquid receiver (4). Further, the male screw (76) of the small diameter portion (73a) is screwed into the female screw (35) for the partition member, and a part (77a) of the male screw (77) of the large diameter portion (73b) is female In a state before being screwed into the 37), the root diameter of the partition member internal thread (35) of the receiver body (23) is smaller than the outer diameter of the external thread (76), and the partition member internal thread ( The inner diameter of 35) is larger than the root diameter of the male screw (76). Further, the male screw (76) of the small diameter portion (73a) is screwed into the female screw (35) for the partition member, and a part (77a) of the male screw (77) of the large diameter portion (73b) is female It is preferable that the difference between the root diameter of the female screw (35) for the partition member and the outer diameter of the male screw (76) in a state before being screwed into the 37) is 0.1 to 0.3 mm. Further, the volume of the gap for one pitch between the partition member internal thread (35) of the liquid receiver main body (23) and the external thread (76) was crushed at the peak of the external thread (76). It is preferable that the size is larger than the volume of the portion.

  Further, similarly to the case shown in FIG. 5, the inner diameter of the female screw (37) for the plug of the receiver body (23) is preferably larger than the root diameter of the male screw (76). The inner diameter of the female screw (37) for the plug of the liquid main body (23) is the outer diameter of the male screw (76) before being screwed into the female screw (35) for the partition member of the liquid receiver main body (23). It is desirable that it be larger than that.

  Other configurations are the same as those of the liquid receiver (4) shown in FIGS.

  The condenser provided with the liquid receiver according to the present invention is suitably used for a car air conditioner mounted on an automobile.

(1): Capacitor
(2): Condensing section
(3): Subcooling section
(4) (50) (60) (70): Liquid receiver
(34): Through hole
(43): Suction pipe
(23): Receiver body
(24) (62) (72): Plug
(25): First space
(26): Second space
(27) (61) (71): Partition member
(28): Refrigerant inflow hole
(29): Refrigerant outflow hole
(34): Through hole
(35): Female thread for partition member
(351): Bottom of female thread for partition member
(36): Thread of partition member
(361): Thread of partition thread
(361a): crushed part of the thread of the partition member
(37): Female thread for plug
(38): Plug external thread
(42): Gap
(43): Suction pipe
(51): Connecting member
(63) (73): Cylinder member
(73a): Small diameter part
(73b): Large diameter part
(64) (65) (74) (75): Through hole
(64a) (74a): One end opening of through hole
(66) (76): Male thread of cylindrical member
(66a): First part of male screw
(66b): Second part of male screw
(77): Male thread
(77a): Part of male thread
(D1): Root diameter of female thread for partition member
(D2): Inner diameter of female thread for partition member
(D3): Inner diameter of female thread for plug
(d1): Outer diameter of external thread of partition member
(d2): Thread diameter of the thread of the partition member

Claims (13)

A receiving body having a tubular shape having one end opened and the other end closed; a plug fitted into the receiving body through the one end opening to close the one end opening of the receiving body; A partition member arranged at an intermediate portion between the closed end and the plug in the liquid container main body, wherein the refrigerant is located between the closed end of the liquid receiver main body and the partition member and the refrigerant flows therein. And a second space, which is located between the plug and the partition member and through which the refrigerant flows out, is formed on the peripheral wall of the receiver main body so that the first space communicates with the outside and the first refrigerant flows through the peripheral wall. A refrigerant receiver in which a refrigerant inflow hole flowing into the space and a refrigerant outflow hole through which the second space communicates with the outside and the refrigerant flows out of the second space are formed,
A female thread for the partition member is formed on the inner peripheral surface of the peripheral wall of the receiver body, and a screw is formed on the outer peripheral surface of the partition member. A liquid receiver in which the first space and the second space are sealed by tightly fitting the female screw for the partition member of the liquid receiver body and the male screw of the partition member by being screwed into the screw. At least a portion of the entire receiver body where the female thread for the partition member is formed is made of metal and the partition member is made of plastic, and the threads of the partition member are crushed so that the partition of the receiver body is partitioned. The liquid receiver according to claim 1, wherein the liquid receiver is in close contact with the bottom of the female screw for the member. In a state before the external thread of the partition member is screwed into the internal thread for the partition member of the receiver main body, the root diameter of the internal thread for the partition member of the receiver main body is smaller than the outer diameter of the external thread of the partition member. 3. The liquid receiver according to claim 2, wherein the internal diameter of the partition member internal thread is larger than the root diameter of the external thread of the partition member. Difference between the root diameter of the female thread for the partition member of the receiver body before the external thread of the partition member is screwed into the female thread for the partition member of the receiver body, and the outer diameter of the external thread of the partition member. The liquid receiver according to claim 3, wherein is 0.1 to 0.3 mm. The volume of the gap of one pitch between the female thread for the partition member of the receiver body and the external thread of the partition member is larger than the volume of the crushed portion of the thread of the external thread of the partition member. The liquid receiver according to claim 3. A female screw for a plug is formed on the inner peripheral surface of the peripheral wall of the main body on the opening end side with respect to the female screw for the partition member, a screw is formed on the outer peripheral surface of the plug, and the external thread of the plug is The internal thread of the female thread for the plug of the receiver main body is larger than the root diameter of the external thread of the partition member. A liquid receiver according to item 1. 7. The liquid receiver according to claim 6, wherein the internal diameter of the female screw for the plug of the liquid receiver main body is larger than the external diameter of the external thread of the partition member. 8. The liquid receiver according to claim 6, wherein the partition member and the plug are separately formed, and the partition member and the plug are separated from each other. The liquid receiver according to claim 6, wherein the partition member and the plug are connected in the second space by a plurality of connecting members provided integrally with the partition member and the plug. A partition member and a plug are provided on one synthetic resin cylindrical member at an interval in the longitudinal direction of the cylindrical member, and at least one through-hole is provided between the partition member and the plug in the cylindrical member. The hole is formed, and the inside of the through hole is a second space, and the second space communicates with the refrigerant outflow hole of the receiver main body through an opening at one end of the through hole. The liquid receiver according to 6 or 7. The outer diameter of the cylindrical member is equal over the entire length, and one male screw is formed on the outer peripheral surface of the cylindrical member over the entire length, and the male screw is formed at a portion serving as a partition member of the cylindrical member in the male screw. 11. A part of the receiver main body is screwed into a female thread for a partition member of the receiver body, and a second part, which is also formed as a plug, is screwed into a female thread of the receiver main body. The receiver described. The cylindrical member is stepped, has a small diameter portion and a large diameter portion, a partition member is provided in the small diameter portion, a plug is provided in the large diameter portion, and the inside becomes the second space. A through hole is formed, and one male screw over the entire length is formed on each of the outer peripheral surface of the small diameter portion and the outer peripheral surface of the large diameter portion of the cylindrical member, and the small diameter external screw is used for a partition member of the receiver main body. The liquid receiver according to claim 10, wherein a part of the large-diameter external thread formed as a plug is screw-fitted to the screw, and a part of the female screw for the plug of the liquid receiver main body is screw-fitted. The condenser includes a condenser, a supercooling section provided above the condenser, and a receiver provided between the condenser and the supercooler. Through the supercooling section through the condenser,
A liquid receiver comprises the liquid receiver according to any one of claims 1 to 12, wherein both upper and lower ends are opened in a first space of the liquid receiver, and a lower end opening communicates with the first space. A suction pipe whose upper end opening communicates with the second space is disposed, and a through-hole is formed in the partition member and extends in the up-down direction and allows the first space and the second space to pass through. Into the first space of the receiver through the refrigerant inflow hole through the refrigerant inflow hole, enters the second space through the suction pipe, and passes through the refrigerant outflow hole. A condenser designed to flow to the cooling section.

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