JP6850060B2 - Capacitor - Google Patents

Description

The present invention relates to, for example, capacitors used in refrigeration cycles constituting car air conditioners.

Within the scope of this specification and claims, the top and bottom and left and right of FIGS. 1 and 2 are referred to as top and bottom and left and right.

As a refrigerating cycle condenser constituting a car air conditioner, it is provided with a condensing part, an overcooling part provided above the condensing part, and a liquid receiver provided between the condensing part and the overcooling part. At least one heat exchange path consisting of a plurality of heat exchange tubes arranged in parallel with the longitudinal direction directed to the left-right direction and vertically spaced apart from each other is provided in the condensing portion and the supercooling portion from the condensing portion. The outflowing refrigerant flows into the overcooling section via the liquid receiver, and is located above the refrigerant inflow port and the refrigerant inflow port into which the refrigerant flows from the condensing section and is overcooled. A refrigerant outlet for flowing out the refrigerant is formed in the portion, and at a height position between the condensing portion and the overcooling portion in the receiver, the inside of the condensing portion is formed as a first space leading to the condensing portion via the refrigerant inflow port. , Horizontal plate-shaped partition members that are located above the first space and partition from the second space that leads to the supercooling section via the refrigerant outlet are arranged, and both upper and lower ends are arranged in the first space of the receiver. Is open and a suction pipe is arranged to allow the first space and the second space to pass through, and the inside of the suction pipe is communicated to the second space through a through-hole-shaped communication portion provided in the partition member, and the partition portion is provided. A capacitor in which an operating member is provided on the upper surface of the refrigerant is known (see Patent Document 1).

In the capacitor described in Patent Document 1, the refrigerant that has passed through the condensing portion flows into the first space in the receiver from the refrigerant inflow port, then flows into the second space through the suction pipe, and then from the refrigerant outflow port. It is designed to enter the supercooling section.

However, in the capacitor described in Patent Document 1, when the refrigerant is filled in the refrigeration cycle using the capacitor, it takes a relatively long time to set the refrigerant filling amount to an appropriate filling amount at which the supercooling degree is constant. At the same time, there is a problem that the width of the stabilization region where the supercooling degree is constant becomes relatively narrow.

Japanese Patent No. 4743802

An object of the present invention is to solve the above problems, to set the amount of refrigerant charged in the refrigeration cycle to an appropriate amount at an early stage, and to widen the width of the stabilization range in which the supercooling degree is constant. It is to provide a capacitor.

The present invention comprises the following aspects in order to achieve the above object.

1) It is provided with a condensing part, an overcooling part provided above the condensing part, and a liquid receiver provided between the condensing part and the overcooling part, and the condensing part and the overcooling part are respectively provided. At least one heat exchange path consisting of a plurality of heat exchange tubes arranged in parallel with the longitudinal direction oriented in the left-right direction and spaced in the vertical direction is provided, and the refrigerant flowing out from the condensing portion receives the receiver. The refrigerant flows into the overcooling section through the above, and the refrigerant inflow port into which the refrigerant flows from the condensing section and the refrigerant outflow port located above the refrigerant inflow port and causing the refrigerant to flow out to the overcooling section. Is formed, and in the receiver, there is a first space that leads to the condensing part via the refrigerant inlet and a second space that is located above the first space and leads to the overcooling part through the refrigerant outlet. A partition portion is provided in the receiver to divide the inside of the receiver into a first space and a second space, and both upper and lower ends are opened in the first space of the receiver and the first space is formed. When tube siphoning of establishing communication between the second space is disposed Oite inside the suction tube is vented to the second space through the communicating portion provided on the partition portion capacitor,
The partition is provided with a tubular portion that is composed of a peripheral wall and a closing wall that closes the upper end opening of the peripheral wall and opens downward, and a tubular portion that protrudes outward from the peripheral wall of the tubular portion, and the peripheral portion is a refrigerant inflow port. It is composed of a seal portion that is in contact with the inner peripheral surface of the receiver at a height position between the pipe and the refrigerant outlet, and the internal space of the tubular portion is communicated to a portion below the seal portion in the first space. The tubular portion of the partition portion is an internal volume adjusting portion that adjusts the internal volume of the portion below the seal portion and the internal volume of the portion above the seal portion in the first space, and the suction pipe closes the tubular portion. It is provided in a hanging shape on the wall, and the inner diameter of the peripheral wall of the tubular part is larger than the outer diameter of the suction pipe, and there is a gap over the entire circumference between the inner peripheral surface of the peripheral wall of the tubular part and the outer peripheral surface of the suction pipe. The upper end of the tubular portion of the partition is located above the refrigerant outlet, and above the seal, between the outer peripheral surface of the peripheral wall of the tubular portion of the partition and the inner peripheral surface of the receiver. A capacitor with a gap formed all around.

2) A suction pipe is integrally provided on the closing wall of the tubular portion that constitutes the internal volume adjusting portion of the partition portion, and the closed wall is communicated with a through hole and allows the inside of the suction pipe to communicate with the second space. The capacitor described in 1) above, which is provided with a part.

3) A tubular operation part that protrudes upward and has both upper and lower ends open is provided around the through hole in the closing wall of the tubular part that constitutes the internal volume adjustment part of the partition part, and the inside of the tubular operation part penetrates. The capacitor according to 2) above that leads to the hole and the second space.

4) The suction pipe is formed separately from the tubular part that constitutes the internal volume adjustment part of the partition, and the upper end of the suction pipe is inserted into the through hole formed in the closed wall of the tubular part, and the suction pipe is inserted. The capacitor described in 1) above, in which the upper end opening of the capacitor faces the second space.

5) A tubular desiccant accommodating portion is provided connected to the lower end of the peripheral wall of the tubular portion constituting the internal volume adjusting portion of the partition portion and extends downward, and the desiccant is put in from the inside of the desiccant accommodating portion to the inside of the tubular portion. The capacitor according to any one of 1) to 4) above.

6) The capacitor according to any one of 1) to 4) above, in which a desiccant bag having breathability and liquid permeability and containing a desiccant is arranged in the first space in the receiver. ..

According to the capacitors 1) to 6) above, the receiver has a refrigerant inlet that allows the refrigerant to flow in from the condensing portion and a refrigerant outlet that is located above the refrigerant inlet and allows the refrigerant to flow out to the overcooling portion. A first space that is formed and leads to the condensing portion via the refrigerant inlet and a second space that is located above the first space and leads to the overcooling portion via the refrigerant outlet are formed in the receiver. Then, a partition portion is provided in the receiver to divide the inside of the receiver into a first space and a second space, and both upper and lower ends are opened in the first space of the receiver and the first space is used. In a capacitor in which a suction pipe is arranged to pass through the second space and the inside of the suction pipe is communicated to the second space through a communication portion provided in the partition portion, the partition portion is the peripheral wall and the upper end opening of the peripheral wall. A tubular portion that is composed of a closing wall and opens downward, and a tubular portion that is provided outward on the peripheral wall of the tubular portion and has a peripheral portion that receives liquid at a height position between the refrigerant inlet and the refrigerant outlet. It consists of a seal portion that is in contact with the inner peripheral surface of the vessel, and the internal space of the tubular portion is communicated to a portion below the seal portion in the first space, and the tubular portion of the partition portion is the seal portion in the first space. Since it is an internal volume adjusting part that adjusts the internal volume of the lower part and the internal volume of the upper part , when the refrigerant is filled in the refrigeration cycle using this capacitor, the second receiver. The space is filled with the liquid-phase refrigerant in a relatively short time as compared with the case where there is no tubular portion. Therefore, when the refrigerant is filled, the inside of the heat exchange pipe of the refrigerant supercooling path can be filled with the liquid phase refrigerant at an early stage, and as a result, the amount of the refrigerant filled in the refrigeration cycle becomes constant at an early stage. It becomes possible to set an appropriate encapsulation amount.

Further, since the internal volume adjusting portion increases the internal volume of the portion below the seal portion in the first space of the receiver as compared with the case where there is no tubular portion , the degree of supercooling is stabilized. The width of the region, that is, the width of the refrigerant filling amount at which the supercooling degree is constant becomes wide. Therefore, more stable supercooling characteristics can be obtained against load fluctuations and refrigerant leakage. Further, in general, the capacity of the receiver is determined in order to determine the width of the stabilization region required for the capacitor, but an internal volume adjusting unit for increasing the internal volume of the first space is provided. As a result, the receiver can be made more compact and lighter.

According to the capacitor of 1) above , an internal volume adjusting portion can be provided in the partition portion with a relatively simple configuration.

According to the capacitor of 2 ) above, the suction pipe that allows the first space and the second space to pass through can be easily and surely arranged in the first space of the receiver.

According to the condenser in 3) above, if the upper end of the receiver can be opened and closed, the partition and suction pipe can be easily installed and removed in the receiver by using the operation unit. ..

According to the capacitor of 4) above, the suction pipe that allows the first space and the second space to pass through can be easily and surely arranged in the first space of the receiver.

According to the capacitor in 5) above, it is not necessary to separately prepare a container for the desiccant, and the number of parts can be reduced. Further, since the desiccant can be arranged in the upper part in the first space, the lower part in the first space can be efficiently used. For example, the space for installing the filter can be increased, or the space immediately after the inflow from the condensing part of the receiver can be expanded to prevent the flow of the refrigerant from being obstructed by obstacles, resulting in a stable refrigeration cycle. It becomes possible to maintain the operating status.

It is a front view which shows the whole structure of the capacitor of this invention. It is a front view which shows typically the capacitor of FIG. It is a vertical cross-sectional view which omitted the middle which shows the internal structure of the receiver of the condenser of FIG. 1 enlarged. It is an exploded perspective view which shows the internal structure of the receiver of the condenser of FIG. 1 enlarged. It is a vertical cross-sectional view which omitted a part which shows the modification of the internal structure of the receiver of the condenser of FIG. It is a perspective view which cut out the main part which shows the modification of the internal structure of the receiver of the condenser of FIG.

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

In the following description, it is assumed that the front and back directions of the paper surface of FIG. 1 are the ventilation directions.

Further, in the following description, the term "aluminum" shall include an aluminum alloy in addition to pure aluminum.

FIG. 1 specifically shows the overall configuration of the capacitor of the present invention, and FIG. 2 schematically shows the capacitor of FIG. 1 by omitting the illustration of some members. Further, FIGS. 3 and 4 show the configuration of a main part of the capacitor of FIG.

In FIGS. 1 and 2, the condenser (1) is condensed with a condensing portion (1A), a supercooling portion (1B) provided above the condensing portion (1A), and a state in which the longitudinal direction is directed in the vertical direction. It is provided between a section (1A) and a supercooling section (1B), and is provided with a tank-shaped receiver (2) having a gas-liquid separation function.

The condenser (1) consists of a plurality of aluminum flat heat exchange tubes (3) arranged at intervals in the vertical direction with the width direction facing the ventilation direction and the longitudinal direction facing the left-right direction, and the longitudinal direction. Next to the two aluminum header tanks (4) (5), which are arranged vertically and spaced apart from each other in the left-right direction, and both ends of the heat exchange tube (3) in the longitudinal direction are joined by brazing material. Aluminum corrugated fins (6) placed between the matching heat exchange tubes (3) and outside the heat exchange tubes (3) at the upper and lower ends and joined to the heat exchange tubes (3) with brazing material, and the upper and lower ends. It is provided with an aluminum side plate (7) arranged outside the corrugated fin (6) and joined to the corrugated fin (6) by a brazing material. Hereinafter, joining with a brazing material will be referred to as brazing.

The condensing portion (1A) of the capacitor (1) is provided with at least one heat exchange path (P1) composed of a plurality of heat exchange tubes (3) arranged one above the other in succession. Further, the supercooling portion (1B) of the capacitor (1) is provided with at least one heat exchange path (P2) composed of a plurality of heat exchange tubes (3) arranged one above the other in succession. ing. Then, the refrigerant flow directions of all the heat exchange tubes (3) constituting each heat exchange path (P1) (P2) are the same, and the heat exchange tubes (3) of the two adjacent heat exchange paths The refrigerant flow direction is different. Here, the heat exchange path (P1) of the condensing section (1A) is referred to as a first heat exchange path, and the heat exchange path (P2) of the supercooling section (1B) is referred to as a second heat exchange path.

Inside both header tanks (4) and (5), aluminum partition members (8) and (9) are provided at height positions between the first heat exchange path (P1) and the second heat exchange path (P2), respectively. ) Divides into two compartments (4a) (4b) (5a) (5b) arranged vertically, and the portion of the capacitor (1) located below both partition members (8) and (9) is It is a condensing part (1A), and the part located above both partition members (8) and (9) is a supercooling part (1B).

The section (4a) below the partition member (8) in the right header tank (4) is the inlet of the condensing section through which the upstream end of the heat exchange pipe (3) of the first heat exchange path (P1) passes in the refrigerant flow direction. It is a header part (11), and the upper section (4b) is also an overcooling part outlet header part through which the downstream end in the refrigerant flow direction of the heat exchange pipe (3) of the second heat exchange path (P2) communicates. It is (12). Further, in the compartment (5a) below the partition member (9) in the left header tank (5), the condensate through which the downstream end in the refrigerant flow direction of the heat exchange pipe (3) of the first heat exchange path (P1) communicates. The section outlet header section (13) is also the upper section (5b), and the upper section (5b) is the inlet of the overcooling section through which the upstream end of the heat exchange pipe (3) of the second heat exchange path (P2) passes in the refrigerant flow direction. It is the header part (14).

Refrigerant inlet (15) is formed in the vertical middle of the condensing portion inlet header (11) of the right header tank (4), and the right header tank (4) is an aluminum refrigerant inlet member leading to the refrigerant inlet (15). (16) is joined. Further, a refrigerant outlet (17) is formed in the supercooled outlet header portion (12) of the right header tank (4), and an aluminum refrigerant outlet member (18) leading to the refrigerant outlet (17) is formed in the right header tank (4). Are joined. The refrigerant outlet (19) on the header side is formed in the portion near the lower end of the condensing outlet header (13) of the left header tank (5), and the header is also formed in the lower portion of the supercooling inlet header (14). A part-side refrigerant inlet (21) is formed.

As shown in FIGS. 3 and 4, the receiver (2) is brazed to the aluminum cylinder (23) and the lower end of the cylinder (23) to close the lower end opening of the cylinder (23). A cylinder made of synthetic resin that is composed of a lower end closing member (24) and is brazed to the left header tank (5) and closes the upper end opening of the receiver main body (22). It is equipped with a plug (25) (closing member). A refrigerant inlet (26) on the receiver side leading to a refrigerant outlet (19) on the header portion side is formed in a portion of the receiver body (22) near the lower end of the cylinder (23), and a partition member (partition member) is also formed. A refrigerant outlet (27) on the receiver side leading to the refrigerant inlet (21) on the header portion side is formed at a height position above 9). A female screw (23a) is formed on the upper end of the inner peripheral surface of the cylindrical body (23) of the receiver body (22), and a male screw (25a) formed on the upper part of the outer peripheral surface of the plug (25). Is screwed into the female screw (23a) of the receiver body (22), so that the plug (25) is detachably attached to the upper end of the receiver body (22). The portion of the cylinder body (23) of the receiver body (22) below the female screw (23a) on the inner peripheral surface and the portion below the male screw (25a) on the outer peripheral surface of the plug (25). Is sealed by an O-ring (28).

The inside of the liquid receiver (2) is divided into two compartments (2a) and (2b) arranged in the vertical direction by a synthetic resin partition member (29) (partition), and the lower compartment (2a) receives the receiver. It becomes the first space (31) leading to the condensing part (1A) through the liquid vessel side refrigerant inflow port (26), the upper section (2b) is located above the first space (31), and the liquid receiver side refrigerant. It is a second space (32) leading to the supercooling section (1B) via the outlet (27). The partition member (29) is provided with an internal volume adjusting portion (33) that adjusts the internal volume of the first space (31) and the internal volume of the second space (32).

The partition member (29) consists of a peripheral wall (34a) and a closing wall (34b) that closes the upper end opening of the peripheral wall (34a), and has a cylindrical portion (34) that opens downward and a peripheral wall of the cylindrical portion (34). The receiver is provided at the lower end of (34a) in the radial direction outward, and the peripheral edge is at a height position between the refrigerant inlet (26) on the receiver side and the refrigerant outlet (27) on the receiver side. It consists of a seal portion (35) in contact with the inner peripheral surface of the cylindrical body (23) of (2). The internal space of the cylindrical portion (34) of the partition member (29) is communicated to the first space (31), whereby the contents of the portion below the seal portion (35) in the first space (31). As the product is increased, the internal volume of the portion above the seal portion (35 ) in the second space (32) is reduced, and the cylindrical portion (34) constitutes the internal volume adjusting portion (33). There is. Further, the upper end of the cylindrical portion (34) of the partition member (29) is located at a height above the refrigerant outlet (27) on the receiver side, whereby the second portion in the receiver (2) is located. The internal volume of the portion above the seal portion (35 ) in the space (32) is effectively reduced. Further, the outer peripheral surface of the peripheral wall (34a) of the cylindrical portion (34) of the partition member (29) and the inner peripheral surface of the cylindrical body (23) constituting the receiver main body (22) of the receiver (2). A gap is formed over the entire circumference between the two. A through hole (36) is formed in the central portion of the closing wall (34b) of the cylindrical portion (34) of the partition member (29).

A suction pipe with a circular cross section that has both upper and lower ends open in the first space (31) in the receiver (2) and allows the portion near the lower end of the first space (31) to pass through the second space (32). (37) is arranged. The upper end of the suction pipe (37) is integrated with the peripheral portion of the through hole (36) on the lower surface of the closed wall (34b) of the cylindrical portion (34) of the partition member (29). Therefore, the inside of the suction pipe (37) is communicated to the second space (32) through the communication portion formed by the through hole (36). At the lower end of the suction pipe (37), a filter (38) for removing foreign matter from the refrigerant flowing into the suction pipe (37) from the first space (31) is provided.

A cylindrical desiccant accommodating portion (39) is integrally provided so as to project downward from the lower end of the peripheral wall (34a) of the cylindrical portion (34) of the partition member (29). The desiccant (41) is contained from the inside of 39) to the inside of the cylindrical part (34). The lower end of the desiccant accommodating portion (39) is located above the lower end of the suction pipe (37), and the portion around the suction pipe (37) at the lower end opening of the desiccant accommodating portion (39) is made of synthetic resin. It is blocked by a closing member (42). Further, a plurality of refrigerant passage holes (43) are formed in a through shape on the peripheral wall (34a) of the desiccant accommodating portion (39).

Further, a cylindrical operating portion (44) protruding upward and having both upper and lower ends open in a portion around a through hole (36) on the upper surface of the closing wall (34b) of the cylindrical portion (34) of the partition member (29). ) Is provided integrally. Therefore, the inside of the suction pipe (37) leads to the second space (32) through the through hole (36) and the operation part (44) of the closed wall (34b) of the cylindrical part (34). A through hole (44a) is formed in a portion of the peripheral wall of the operation unit (44) located on one diameter. The upper end of the operating portion (44) is located in a recess (25b) formed on the lower surface of the plug (25).

The cylindrical portion (34), the seal portion (35), the suction pipe (37), the desiccant accommodating portion (39), and the operating portion (44) of the partition member (29) are integrally formed of synthetic resin.

The condenser (1), together with the compressor, expansion valve (decompressor) and evaporator, constitutes a refrigeration cycle and is installed in the vehicle as a car air conditioner.

In the condenser (1) having the above-described configuration, the high-temperature and high-pressure vapor-phase refrigerant compressed by the compressor passes through the refrigerant inlet member (16) and the refrigerant inlet (15) to the right header tank (4) condensing portion inlet header. It flows into the part (11) and is condensed while flowing to the left in the heat exchange tube (3) of the first heat exchange path (P1). ) Inflow. The refrigerant that has flowed into the condensing outlet header (13) of the left header tank (5) passes through the header side refrigerant outlet (19) and the receiver side refrigerant inlet (26) to the receiver (2). ) Enter the first space (31).

The refrigerant that has flowed into the first space (31) in the receiver (2) is a gas-liquid mixed-phase refrigerant, and among the gas-liquid mixed-phase refrigerants, the liquid-phase-based mixed-phase refrigerant is the lower part in the receiver (2) due to gravity. Accumulate in. Further, in the first space (31) of the receiver (2), the refrigerant comes into contact with the desiccant (41) in the desiccant accommodating portion (39) through the refrigerant passage hole (43), so that the refrigerant is contained in the refrigerant. Moisture is removed. The liquid-phase-based mixed-phase refrigerant accumulated in the lower part of the receiver (2) passes through the filter (38) and enters the suction pipe (37), and enters the suction pipe (37) and the cylinder of the partition member (29). It flows into the second space (32) through the through hole (36) of the shape portion (34) and the operation portion (44).

The liquid-phase-based mixed-phase refrigerant that has flowed into the second space (32) in the receiver (2) passes through the refrigerant outlet (27) on the receiver side and the refrigerant inlet (21) on the header side, and the left header tank. Enter the supercooled part inlet header part (14) of (5).

The refrigerant that entered the overcooling section inlet header section (14) of the left header tank (5) was overcooled while flowing to the right in the heat exchange tube (3) of the second heat exchange path (P2). After that, it enters the overcooling part outlet header part (12) of the right side header tank (4), flows out through the refrigerant outlet (17) and the refrigerant outlet member (18), and is sent to the evaporator via the expansion valve.

When the refrigerant is sealed in the car air conditioner using the above-mentioned capacitor, the internal volume adjusting portion (33) of the partition member (29) acts to be lower than the seal portion (35) in the first space (31). since the internal volume of the upper part than the seal portion (35) in the second space (32) together with the internal volume of the portion is increased is sera reduced, the second space (32 liquid receiver (2) ) Will be filled with the liquid phase refrigerant in a relatively short time. Therefore, the inside of the heat exchange pipe (3) of the second heat exchange path (P2), which is the refrigerant supercooling path, can be filled with the liquid phase refrigerant at an early stage, and as a result, the amount of the refrigerant filled in the refrigeration cycle can be filled at an early stage. , It becomes possible to set an appropriate filling amount so that the degree of supercooling is constant. Moreover, since the width of the stabilization region where the supercooling degree is constant, that is, the width of the refrigerant filling amount where the supercooling degree is constant is widened, more stable supercooling characteristics can be obtained against load fluctuations and refrigerant leakage. ..

In the above-described embodiment, the space between the outer peripheral surface of the seal portion (35) of the partition member (29) and the inner peripheral surface of the cylindrical body (23) of the receiver body (22) of the receiver (2) is , May be sealed by an O-ring.

5 and 6 show a modified example of the internal structure of the receiver (2) used in the condenser (1).

In FIGS. 5 and 6, the first space (31) in the receiver (2) is arranged, and both upper and lower ends are opened, and the portion near the lower end of the first space (31) and the second space (32). The suction pipe (50) having a circular cross section is formed separately from the cylindrical portion (34) constituting the internal volume adjusting portion (33) of the partition member (29), and is formed separately from the suction pipe (50). Is attached to the closed wall (34b) of the cylindrical part (34). That is, a circular through hole (51) is formed at a position eccentric from the center of the closed wall (34b) of the cylindrical portion (34), and the upper end of the suction pipe (50) is inserted into the through hole (51). Thereby, the suction pipe (50) is attached to the closed wall (34b), and the upper end opening of the suction pipe (50) faces the second space (32). Further, an upward projecting portion (52) projecting upward and having a protruding end abutting on the lower surface of the plug (25) at a position deviated from the through hole (51) on the upper surface of the closing wall (34b) of the cylindrical portion (34). ) Are integrally formed so as not to block the entire lower end opening of the recess (25b).

In the first space (31) in the receiver (2) and below the seal portion (35) of the partition member (29), the desiccant is contained and has breathability and liquid permeability. A desiccant bag (53) having a longitudinal direction facing up and down is arranged.

Other configurations are the same as the internal structure of the receiver (2) in the above-described embodiment.

The capacitor according to the present invention is suitably used for a car air conditioner mounted on an automobile.

(1): Capacitor
(1A): Condensation part
(1B): Supercooled part
(2): Receiver
(3): Heat exchange tube
(26): Refrigerant inflow port on the receiver side
(27): Refrigerant outlet on the receiver side
(29): Partition member (partition part)
(31): First space
(32): Second space
(33): Internal volume adjustment unit
(34): Cylindrical part
(34a): Circumferential wall
(34b): Closed wall
(35): Seal part
(36): Through hole
(37): Suction pipe
(39): Desiccant housing
(41): Desiccant
(44): Operation unit
(50): Suction pipe
(51): Through hole
(53): Desiccant bag
(P1) (P2): Heat exchange path

Claims (6)

It is provided with a condensing part, an overcooling part provided above the condensing part, and a liquid receiver provided between the condensing part and the overcooling part, and the condensing part and the overcooling part are provided in the longitudinal direction, respectively. At least one heat exchange path consisting of a plurality of heat exchange tubes arranged in parallel at intervals in the vertical direction is provided, and the refrigerant flowing out from the condensing portion passes through the receiver. It is designed to flow into the cooling section, and the receiver has a refrigerant inlet that allows the refrigerant to flow in from the condensing section, and a refrigerant outlet that is located above the refrigerant inlet and allows the refrigerant to flow out to the overcooling section. Then, in the liquid receiver, a first space leading to the condensing portion via the refrigerant inflow port and a second space located above the first space and communicating with the overcooling portion via the refrigerant outlet are formed. , A partition portion is provided in the receiver to divide the inside of the receiver into a first space and a second space, and both upper and lower ends are opened in the first space of the receiver, and the first space and the first space are open. In a condenser in which a suction pipe is arranged to pass through the two spaces and the inside of the suction pipe is communicated to the second space through a communication portion provided in a partition portion.
The partition is provided with a tubular portion that is composed of a peripheral wall and a closing wall that closes the upper end opening of the peripheral wall and opens downward, and a tubular portion that protrudes outward from the peripheral wall of the tubular portion, and the peripheral portion is a refrigerant inflow port. It is composed of a seal portion that is in contact with the inner peripheral surface of the receiver at a height position between the pipe and the refrigerant outlet, and the internal space of the tubular portion is communicated to a portion below the seal portion in the first space. The tubular portion of the partition portion is an internal volume adjusting portion that adjusts the internal volume of the portion below the seal portion and the internal volume of the portion above the seal portion in the first space, and the suction pipe closes the tubular portion. It is provided in a hanging shape on the wall, and the inner diameter of the peripheral wall of the tubular part is larger than the outer diameter of the suction pipe, and there is a gap over the entire circumference between the inner peripheral surface of the peripheral wall of the tubular part and the outer peripheral surface of the suction pipe. The upper end of the tubular portion of the partition is located above the refrigerant outlet, and above the seal, between the outer peripheral surface of the peripheral wall of the tubular portion of the partition and the inner peripheral surface of the receiver. A capacitor with a gap formed all around. A suction pipe is integrally provided on the closing wall of the tubular portion constituting the internal volume adjusting portion of the partition portion, and the closing wall has a communication portion formed of a through hole and communicating the inside of the suction pipe to the second space. The capacitor according to claim 1, which is provided. A tubular operation part that protrudes upward and has both upper and lower ends open is provided around the through hole in the closed wall of the tubular part that constitutes the internal volume adjustment part of the partition part, and the inside of the tubular operation part is provided with the through hole and the through hole. The capacitor according to claim 2, which is open to the second space. The suction pipe is formed separately from the tubular portion that constitutes the internal volume adjusting portion of the partition portion, the upper end portion of the suction pipe is inserted into the through hole formed in the closing wall of the tubular portion, and the upper end of the suction pipe is formed. The capacitor according to claim 1, wherein the opening faces the second space. A tubular desiccant accommodating portion that extends downward from the lower end of the peripheral wall of the tubular portion that constitutes the internal volume adjusting portion of the partition portion is provided, and the desiccant is contained from the inside of the desiccant accommodating portion to the inside of the tubular portion. The capacitor according to any one of claims 1 to 4. The capacitor according to any one of claims 1 to 4, wherein a desiccant bag having breathability and liquid permeability and containing a desiccant is arranged in a first space in a receiver.

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