JP2011183869A - Condenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a condenser which is not likely to hinder other equipment even when other equipment is arranged near the same. <P>SOLUTION: An end side of the condenser 1 includes: a first header tank 3, to which a first heat exchange pipe 2A of each of a third and a fourth heat exchange paths P3 and P4 are connected; and a second header tank 4, to which a second heat exchange pipe 2B of each of a first and a second heat exchange paths are connected, an upper end of the first header tank 3 is positioned above a lower end of the second header tank 4. A coolant-passing cylindrical body 23 is arranged in the first header tank 3 so that part thereof is positioned at part communicated with a first heat exchange pipe 2A of the fourth heat exchange path P4 inside the first header tank 3. The inside of the first header tank 3 is divided into a first part 27 communicated with the first heat exchange pipe 2A of the fourth heat exchange path 4 through a partitioning part 29 and into a second part 28 higher than the first part 27. The cylindrical body 23 is formed with a first communication opening 31 opened in the first part 27 and a second communication opening 32 opened in the second part 28. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a capacitor suitably used for, for example, a car air conditioner mounted on an automobile.

  In this specification and claims, the term “capacitor” includes a subcool condenser having a condenser section and a supercooling section in addition to a normal condenser.

  Further, in this specification and claims, the top and bottom and the left and right refer to the top and bottom and the left and right of FIG.

  For example, as a condenser of a car air conditioner, it is provided with a plurality of heat exchange tubes arranged in parallel at intervals in the vertical direction, and a header tank extending in the vertical direction to which both left and right ends of the heat exchange tubes are connected. Three heat exchange paths composed of a plurality of heat exchange pipes arranged in series are provided in the vertical direction, and the refrigerant flow directions of all the heat exchange pipes constituting each heat exchange path are the same and adjacent to each other. The first header tank is a condenser in which the refrigerant flow directions of the heat exchange pipes of the two matched heat exchange paths are different, and the heat exchange pipe constituting the heat exchange path at the lower end is connected to either one of the left and right ends. And a second header tank to which a heat exchange pipe constituting the heat exchange path excluding the heat exchange path at the lower end is connected separately, the second header tank is disposed on the first header tank, Header tank thickness When the thickness of the second header tank becomes much larger than the thickness of the second header tank, a desiccant is disposed in the first header tank, so that the first header tank uses gravity to separate the gas and liquid and store the liquid. The first heat exchange pipe connected to the first header tank and the second heat exchange pipe connected to the second header tank have the same function as the liquid tank, and the lengths of the first heat exchange pipe and the second header tank are equal. The first header tank side end of the heat exchange pipe and the second header tank side end of the second heat exchange pipe are located on the same vertical line, and all the heat exchange paths are a refrigerant condensation path for condensing refrigerant. A capacitor is known (see Patent Document 1).

  In the capacitor described in Patent Document 1, in order to effectively perform gas-liquid separation in the first header tank, the inner volume of the first header tank needs to be considerably larger than that of the second header tank. The thickness of one header tank is considerably larger than the thickness of the second header tank, and there is a problem that a large space is required to arrange the capacitor.

  Usually, other devices are arranged near the capacitor. However, according to the capacitor described in Patent Document 1, the first header tank interferes with other devices. For example, a radiator is generally disposed on the downstream side in the ventilation direction of a condenser for a car air conditioner. However, according to the condenser described in Patent Document 1, the first header tank interferes with the installation of the radiator, and the engine Unnecessary space is generated in the room, and space cannot be saved. Moreover, since the heat exchange pipe is connected over almost the entire length of the first header tank, there is a problem that the gas-liquid separation performance is not sufficient.

Japanese Utility Model Publication 3-31266

  An object of the present invention is to provide a capacitor that solves the above-described problems and is less likely to interfere with other devices as compared with the capacitor described in Patent Document 1 even when other devices are arranged in the vicinity.

  In order to achieve the above object, the present invention comprises the following aspects.

1) It is equipped with a plurality of heat exchange pipes extending in the left-right direction and arranged in parallel at intervals in the vertical direction, and a header tank extending in the vertical direction to which both left and right ends of the heat exchange pipe are connected. The heat exchange paths composed of a plurality of heat exchange pipes arranged side by side are provided three or more in the vertical direction, and all the heat exchange pipes constituting each heat exchange path have the same refrigerant flow direction and are adjacent to each other. A condenser in which the refrigerant flow directions of the heat exchange pipes of the two heat exchange paths are different,
A first header tank to which a first heat exchange pipe constituting at least two heat exchange paths including a heat exchange path at the lower end and continuously arranged is connected to either one of the left and right ends; and a first header tank And a second header tank to which a second heat exchange pipe constituting a heat exchange path provided above the heat exchange path formed by the first heat exchange pipe connected to the first heat exchange pipe is connected. However, the upper end of the first header tank is located higher than the lower end of the second header tank, and the first header tank uses gravity. A heat exchange path at the upper end of a heat exchange path comprising a first heat exchange pipe connected to the first header tank and a second header tank connected to the second header tank. A heat exchange path consisting of two heat exchange tubes and A refrigerant condensing path for condensing the refrigerant, wherein the heat exchanging path excluding the upper end heat exchanging path among the heat exchanging paths composed of the first heat exchanging pipes connected to the first header tank supercools the refrigerant. Refrigerant subcooling, which is a supercooling path, in which a refrigerant passing tubular body is disposed in the first header tank, and at least a part of the refrigerant passing tubular body is adjacent to the lower side of the refrigerant condensing path in the first header tank. The refrigerant is condensed in the first header tank in the first header tank between the peripheral wall of the first header tank and the refrigerant passage cylindrical body. A partition that divides into a first part through which the first heat exchange pipe of the refrigerant supercooling path adjacent to the lower part of the path communicates and a second part above the first part is provided, and is a cylinder for refrigerant passage. Open to the first part in the first header tank in the body Second communication port is formed, the capacitor at least one of the communication port of the first and second communication port is closed by a filter having an opening to the first communication port and a second moiety.

  2) The first header tank according to 1) above, wherein the first header tank is composed of a cylindrical main body having an open end at least one of the upper end and the lower end, and a closing member detachably attached to the open end of the cylindrical main body. Capacitor.

  3) The refrigerant passing cylindrical body is a bottomed cylindrical shape having an upper end opened and a lower end closed, and a first communication port and a second communication port are formed on the peripheral wall of the refrigerant passing cylindrical body. The capacitor described in 1) or 2) above, wherein a desiccant container in which a desiccant is placed is accommodated in a passing cylindrical body.

  4) The refrigerant passing cylindrical body is a bottomed cylindrical shape having an upper end opened and a lower end closed, and a first communication port and a second communication port are formed on a peripheral wall of the refrigerant passing cylindrical body. The capacitor described in 1) or 2) above, wherein a desiccant is placed in the passing cylinder, and the upper end opening of the refrigerant passing cylinder is closed by a lid.

  5) The partition provided between the peripheral wall of the first header tank and the refrigerant passage cylindrical body is composed of a plate body joined to the peripheral wall of the first header tank, and the refrigerant passage cylindrical body is plate-like. A movement blocking means is provided through the through-hole formed in the body, and the refrigerant passage cylindrical body is provided with a movement blocking means for blocking the vertical movement of the refrigerant passage cylindrical body by sandwiching a partition portion made of a plate-like body from above and below. The capacitor according to any one of 1) to 4) above.

  6) The movement preventing means is provided in an outwardly projecting shape from the refrigerant passing tubular body and is provided in an outwardly projecting shape from the refrigerant passing tubular body and the upper movement preventing portion engaging the upper surface of the partitioning portion. The capacitor as described in 5) above, which further comprises a lower movement blocking portion engaged with the lower surface of the partition portion.

  7) The upper movement prevention portion is formed of a flange provided over the entire circumference of the peripheral wall of the refrigerant passage cylindrical body, and the lower movement prevention portion is spaced circumferentially from the peripheral wall of the refrigerant passage cylindrical body. The capacitor as described in 6) above, comprising a plurality of protrusions provided.

  8) The condenser according to any one of 2) to 7) above, wherein an upper end of the refrigerant passing tubular body is located above the first heat exchange pipe at the upper end connected to the first header tank. .

  9) The first header exchange tank constituting at least two heat exchange paths is connected to the first header tank, and the second heat exchange pipe constituting at least one heat exchange path is connected to the second header tank. The capacitor according to any one of 1) to 8).

  According to the above capacitors 1) to 9), the first heat exchange pipe constituting at least two heat exchange paths arranged in succession including the heat exchange path at the lower end is connected to one of the left and right ends. A first header tank that is connected to a second heat exchange pipe that constitutes a heat exchange path provided above a heat exchange path that is composed of a first heat exchange pipe connected to the first header tank. 2 header tanks are provided, the first header tank is disposed on the outer side in the left-right direction than the second header tank, and the upper end of the first header tank is located above the lower end of the second header tank. Since the first header tank has a function of separating gas and liquid using gravity and storing the liquid, the upper end of the first header tank is extended upward, for example, to the vicinity of the upper end of the second header tank. Of Patent Document 1 Compared with the capacitor, the inner volume of the first header tank can be made large enough to effectively perform gas-liquid separation without making the thickness of the first header tank larger than the thickness of the second header tank. it can. Therefore, the space for disposing the capacitor can be reduced as compared with the capacitor described in Patent Document 1. In particular, even when the radiator is disposed downstream of the air-conditioner condenser in the direction of ventilation, the first header tank is disposed on the outer side in the left-right direction of the second header tank. There is no hindrance to installation, and there is no wasted space in the engine room. As a result, it is possible to save space. In addition, since the space exists above the portion of the first header tank to which the heat exchange pipe is connected, the gas-liquid separation effect by gravity is excellent.

  Moreover, the heat exchange path | pass of the upper end of the heat exchange path | pass which consists of a 1st heat exchange pipe | tube connected to the 1st header tank, and the heat exchange path | pass which consists of a 2nd heat exchange pipe | tube connected to the 2nd header tank A refrigerant condensing path for condensing the refrigerant, wherein the heat exchanging path excluding the upper end heat exchanging path among the heat exchanging paths composed of the first heat exchanging pipes connected to the first header tank supercools the refrigerant. Refrigerant subcooling, which is a supercooling path, in which a refrigerant passing tubular body is disposed in the first header tank, and at least a part of the refrigerant passing tubular body is adjacent to the lower side of the refrigerant condensing path in the first header tank. Since the first heat exchange pipe of the path is located at a portion that communicates with the first heat exchange pipe, the volume of the portion of the first header tank that communicates with the first heat exchange pipe of the refrigerant supercooling path adjacent to the lower side of the refrigerant condensation path. However, the cylinder for refrigerant passage is arranged It is smaller as compared with the case not, the gas-liquid separation of the first header tank is improved. Therefore, the amount of the gas-phase refrigerant flowing into the first heat exchange pipe of the refrigerant subcooling path can be reduced.

  Further, the first heat exchange pipe of the refrigerant supercooling path adjacent to the lower side of the refrigerant condensing path in the first header tank between the peripheral wall of the first header tank and the refrigerant passage tubular body. Is provided with a partition section that is divided into a first portion that communicates with the second portion and a second portion that is above the first portion, and the first portion that opens to the first portion in the first header tank is provided in the refrigerant passage tubular body. Since the communication port and the second communication port opened in the second portion are formed, and at least one of the first and second communication ports is closed by the filter, It is possible to prevent the desiccant and foreign matter from flowing out.

  According to the capacitor of 2), at the time of manufacturing the capacitor, only the cylindrical body of the first header tank is brazed together with other parts at the same time, and then the refrigerant passing cylindrical body is placed in the cylindrical main body. Since the closing member can be detachably attached to the opening end portion of the cylindrical main body after being put in, the mounting of the refrigerant passing cylindrical body into the first header tank can be easily performed.

  According to the capacitors 5) to 7), it is possible to arrange the refrigerant passing tubular body so as not to move into the first header tank.

  According to the capacitor of the above 8), for example, when a desiccant container containing a desiccant is accommodated in the refrigerant passage cylindrical body, only the cylindrical main body of the first header tank is replaced with other parts when the capacitor is manufactured. At the same time, brazing is performed in a lump, and then the closing member is detachably attached to the opening end of the cylindrical body after the refrigerant passing cylindrical body and the desiccant container are placed in the cylindrical main body. In this case, the first heat brazed to the tubular body of the first header tank when the refrigerant passing tubular body and the desiccant container are put into the tubular body by the action of the refrigerant passing tubular body. Damage to the desiccant container due to the end of the exchange tube is prevented.

  According to the condenser of 9) above, the refrigerant flows into the first header tank from the plurality of heat exchange tubes constituting the refrigerant condensing path located at the lower end, and the gas and liquid are separated in the first header tank. It is possible to prevent the liquid phase refrigerant from being re-vaporized by suppressing the occurrence of the drop.

  Further, according to the condenser 9), the refrigerant flows into the first header tank from the plurality of heat exchange pipes constituting the refrigerant condensation path located at the lower end, and the gas and liquid are separated in the first header tank. The gas-liquid separation can be efficiently performed in the first header tank. That is, a gas-liquid mixed phase refrigerant with a large amount of gas phase component flows in the upper heat exchange tube among the plurality of heat exchange tubes constituting the refrigerant condensation path, and a gas with a large amount of liquid phase component in the lower heat exchange tube. Although the liquid-phase refrigerant flows, these gas-liquid refrigerants flow into the first header tank without being mixed, so that gas-liquid separation can be performed efficiently.

It is a front view which shows concretely the whole structure of the capacitor | condenser by this invention. FIG. 2 is a front view schematically showing the capacitor shown in FIG. 1. It is the vertical longitudinal cross-sectional view which abbreviate | omitted and showed the part which expanded and showed the part of the 1st header tank of the capacitor | condenser shown in FIG. FIG. 4 is a sectional view taken along line AA in FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a disassembled perspective view which shows a part of 1st header tank of the capacitor | condenser shown in FIG. 1, and the cylindrical body for refrigerant | coolant passage. It is a figure equivalent to FIG. 2 which shows the modification of the cylindrical body for refrigerant | coolant passage.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the following description, the back side of FIG. 1 (the upper side in FIG. 2) is the front, and the opposite side is the back.

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

  Furthermore, the same parts and the same parts are denoted by the same reference numerals throughout the drawings, and redundant description is omitted.

  FIG. 1 specifically shows the overall configuration of a capacitor according to the present invention, and FIG. 2 schematically shows a capacitor according to the present invention. In FIG. 2, illustration of individual heat exchange tubes is omitted, and illustration of corrugated fins, side plates, a refrigerant inlet member, and a refrigerant outlet member is also omitted. 3 to 6 show the configuration of the main part of the capacitor shown in FIG.

  In FIG. 1, a capacitor (1) has a plurality of flat aluminum heat exchange tubes (2A) spaced apart in the vertical direction with the width direction directed in the front-rear direction and the length direction directed in the left-right direction. ) (2B) and three aluminum header tanks (3), (4) and (5) extending in the vertical direction where the left and right ends of the heat exchange tubes (2A) and (2B) are connected by brazing. Aluminum corrugated fins (6A) (6B) placed between the exchange tubes (2A) (2B) and outside the upper and lower ends and brazed to the heat exchange tubes (2A) (2B), and corrugations on the upper and lower ends It is equipped with aluminum side plates (7) that are placed outside the fins (6A) (6B) and brazed to the corrugated fins (6A) (6B). Three or more heat exchange paths (P1), (P2), (P3), and (P4) made up of pipes (2A) and (2B) are arranged in the vertical direction. The four heat exchange paths are referred to as first to fourth heat exchange paths (P1) (P2) (P3) (P4) in order from the top. The refrigerant flow directions of all the heat exchange tubes (2A) (2B) constituting each heat exchange path (P1) (P2) (P3) (P4) are the same, and two adjacent heat exchange paths The refrigerant flow directions in the heat exchange tubes (2A) and (2B) are different. The left and right ends of the heat exchange pipes (2A) and (2B) are passed through the pipe insertion holes (3a) (see FIGS. 3 and 6) formed in the header tanks (3), (4) and (5). It is brazed to the tank (3) (4) (5).

  As shown in FIGS. 1 and 2, at the left end side of the condenser (1), there are at least two heat exchange paths, including the lower end heat exchange path and arranged in series, here, the third and fourth heat exchange paths. (P3) The first header tank (3) to which the heat exchange pipe (2A) constituting (P4) is connected by brazing and the heat exchange constituting the first and second heat exchange paths (P1) (P2) A second header tank (4) to which the pipe (2B) is connected by brazing is provided separately. Here, the heat exchange pipe (2A) connected to the first header tank (3) is the first heat exchange pipe, and the heat exchange pipe (2B) connected to the second header tank (4) is the second heat. It is an exchange tube. The corrugated fins (6A) disposed between the adjacent first heat exchange pipes (2A) and between the first heat exchange pipe (2A) at the lower end and the lower side plate (7) are connected to the first corrugate. The corrugated fins (6B) arranged between the adjacent second heat exchange pipes (2B) and between the upper second heat exchange pipe (2B) and the upper side plate (7) are referred to as fins. This is called a corrugated fin.

  The front and rear dimensions of the first header tank (3) and the second header tank (4) are substantially the same, but the horizontal header is larger in the first header tank (3) than in the second header tank (4). Is bigger than. The first header tank (3) is arranged on the left side (outside in the left-right direction) of the second header tank (4), and the center in the left-right direction of the first header tank (3) is the second header tank (4). The center of the first and second header tanks (3) and (4) in the front-rear direction is located on the same vertical plane extending in the left-right direction. Therefore, the first header tank (3) and the second header tank (4) are displaced without overlapping when seen from the plane. Also, the upper end of the first header tank (3) is above the lower end of the second header tank (4), here, at the same height as the upper end of the second header tank (4). 3) has a function as a liquid receiving part that separates gas and liquid using gravity and stores the liquid. That is, the internal volume of the first header tank (3) is such that the liquid-phase mixed refrigerant flows into the lower part of the first header tank (3) due to gravity. At the same time, the gas phase component of the gas-liquid mixed-phase refrigerant is accumulated in the upper part of the first header tank (3) due to gravity, and thereby enters the first heat exchange pipe (2A) of the fourth heat exchange path (P4). The internal volume is such that the liquid-phase main mixed refrigerant flows in.

  A third header tank (5) to which all the heat exchange pipes (2A) (2B) constituting the first to fourth heat exchange paths (P1) to (P4) are connected to the right end side of the condenser (1). ) Is arranged. The cross-sectional shape of the third header tank (5) is the same as that of the second header tank (4). The third header tank (5) has a height position between the first heat exchange path (P1) and the second heat exchange path (P2), and the third heat exchange path (P3) and the fourth heat exchange path. Aluminum partition plates (8) and (9) respectively provided at a height position between (P4) and the upper header portion (11), the intermediate header portion (12), and the lower header portion (13) It is divided into. The left end of the second heat exchange pipe (2B) of the first heat exchange path (P1) is the second header tank (4), and the right end is the upper header (11) of the third header tank (5). The left end of the second heat exchange pipe (2B) of the second heat exchange path (P2) is connected to the second header tank (4), and the right end is the intermediate header (12) of the third header tank (5). ), The left end of the first heat exchange pipe (2A) of the third heat exchange path (P3) is the first header tank (3), and the right end is the intermediate header of the third header tank (5). The left end of the first heat exchange pipe (2A) of the fourth heat exchange path (P4) is connected to the first header tank (3) and the right end is connected to the third header tank (5). Are connected to the lower header section (13).

  The second header tank (4), the portion of the first header tank (3) where the first heat exchange pipe (2A) of the third heat exchange path (P3) is connected, the upper side of the third header tank (5) The header section (11), the intermediate header section (12), and the first to third heat exchange paths (P1) to (P3) form a condensing section (1A) for condensing the refrigerant, and the first header tank (3) In the fourth heat exchange path (P4) in which the first heat exchange pipe (2A) is connected, the lower header portion (13) of the third header tank (5) and the fourth heat exchange path (P4). A supercooling section (1B) for supercooling is formed, and the first to third heat exchange paths (P1) to (P3) serve as a refrigerant condensation path for condensing the refrigerant, and a fourth heat exchange path (P4 ) Is a refrigerant supercooling path for supercooling the refrigerant.

  A refrigerant inlet (14) is formed in the upper header part (11) of the third header tank (5) constituting the condensing part (1A), and is located under the third header tank (5) constituting the supercooling part (1B). A refrigerant outlet (15) is formed in the side header portion (13). A refrigerant inlet member (16) communicating with the refrigerant inlet (14) and a refrigerant outlet member (17) communicating with the refrigerant outlet (15) are joined to the third header tank (5).

  Between the first heat exchange pipe (2A) at the upper end of the third heat exchange path (P3) and the second heat exchange pipe (2B) at the lower end of the second heat exchange path (P2), these heat exchange pipes ( An aluminum refrigerant leakage prevention member (18) extending in the left-right direction is disposed so as to be separated from 2A) and (2B) and substantially parallel to both heat exchange tubes (2A) and (2B). A first corrugated fin (6A) is disposed between the first heat exchange pipe (2A) at the upper end of the third heat exchange path (P3) and the refrigerant leakage prevention member (18), and the first heat exchange pipe (2A ) And the refrigerant leakage prevention member (18), and a second corrugated fin is interposed between the second heat exchange pipe (2B) at the lower end of the second heat exchange path (P2) and the refrigerant leakage prevention member (18). (6B) is arranged and brazed to the second heat exchange pipe (2B) and the refrigerant leakage prevention member (18). The left and right ends of the refrigerant leakage prevention member (18) are located close to the first header tank (3) and the third header tank (5), and the first header tank (3) and the third header tank (5). It is not inserted in. As the refrigerant leakage prevention member (18), a pipe having the same configuration as that of the second heat exchange pipe (2B) is used. Since both ends of the refrigerant leakage prevention member (18) are not inserted into the first header tank (3) and the third header tank (5), a pipe having the same configuration as the second heat exchange pipe (2B) is used. It is possible.

  The first header tank (3) is composed of a cylindrical body having both ends opened and a bottom member brazed to the lower end of the cylindrical body, and an aluminum tubular body having an upper end opened and a lower end closed ( 21) and a closing member (22) that is detachably attached to the upper end of the cylindrical main body (21) and closes the upper end opening of the cylindrical main body (21).

  As shown in FIGS. 3 to 6, a synthetic resin refrigerant passing tubular body (23) having a bottomed tubular shape with one end opened and the other end closed in the first header tank (3). , The length direction is put in the vertical direction so that the open end is on the upper side. A bag-shaped desiccant container (25) made of a material having liquid permeability and containing a desiccant (24) is disposed in the refrigerant passage cylindrical body (23).

  The refrigerant passing tubular body (23) has an upper end positioned between the second heat exchange path (P2) and the third heat exchange path (P3) and a lower end of the fourth heat exchange path (P4). Is located below the first heat exchange pipe (2A) at the lower end of the pipe, and at least a part, here, the lower part is the fourth heat exchange path (P4) (the refrigerant subcooling path adjacent to the refrigerant condensation path at the lower end) Is located in the part where the first heat exchange pipe (2A) communicates with the upper part in the part where the first heat exchange pipe (2A) of the third heat exchange path (P3) (the refrigerant condensing path at the lower end) communicates positioned. The right side portion of the peripheral wall (26) of the refrigerant passage cylindrical body (23) is not interfered with the left end portion of the first heat exchange pipe (2A) of the third and fourth heat exchange paths (P3) and (P4). Is provided with a flat portion (26a). The portion excluding the flat portion (26a) in the peripheral wall (26) of the refrigerant passing tubular body (23) is a partial cylindrical shape forming a part of a cylinder. The partial cylindrical part is indicated by (26b). The lower part of the desiccant container (25) is placed in the refrigerant passage cylindrical body (23), and the upper end of the desiccant container (25) is located above the upper end of the refrigerant passage cylindrical body (23), for example, It is in a position near the upper end of the first header tank (3).

  Between the peripheral wall (26) of the refrigerant passage cylindrical body (23) and the peripheral wall (21a) of the cylindrical main body (21) of the first header tank (3), the inside of the first header tank (3) is A partition section partitioned into a first part (27) through which the first heat exchange pipe (2A) of the four heat exchange path (P4) communicates and a second part (28) above the first part (27) (29) is provided. A first communication which is open in the first portion (27) below the partition (29) in the first header tank (3) and which is open in the up-down direction on the peripheral wall (26) of the refrigerant passage cylindrical body (23). A plurality of second communication ports (32) that are open in the vertical direction and open in the second portion (28) above the mouth (31) and the partition (29) are formed at intervals in the circumferential direction, The first and second communication ports (31) and (32) are respectively closed by a mesh filter (33). The first and second communication ports (31), (32) occupy most of the peripheral wall (26) of the refrigerant passing tubular body (23).

  The partition part (29) which divides the inside of the first header tank (3) into a first part (27) and a second part (28) is a peripheral wall of the cylindrical body (21) of the first header tank (3) ( It consists of an aluminum plate-like body (35) inserted into the slit (34) formed in 21a) from the outside and brazed to the peripheral wall (21a). The plate-like body (35) is formed with a through hole (36) through which the refrigerant passage cylindrical body (23) is passed, and the refrigerant passage cylindrical body (23) is tightly passed through the through hole (36). ing. And the part around the through hole (36) in the part which exists in the 1st header tank (3) of a plate-shaped body (35) becomes the partition part (29).

  At the height position between the first communication port (31) and the second communication port (32) in the peripheral wall (26) of the refrigerant passage cylindrical body (23), a through hole ( 36), a movement blocking means (37) for blocking the vertical movement of the refrigerant passage cylindrical body (23) by sandwiching the partition (29) from above and below, is provided. Movement of the passing cylinder (23) is prevented. The movement prevention means (37) is provided on the upper side of the plate-like body (35) and is provided in an outwardly projecting manner from the peripheral wall (26) of the refrigerant passage cylindrical body (23). And a lower movement prevention part (39) provided outwardly projecting from the refrigerant passing tubular body (23) and engaging the lower surface of the partition part (29). The upper movement blocking part (38) is a flange provided over the entire circumference of the peripheral wall (26) of the refrigerant passage cylindrical body (23), and the lower movement blocking part (39) is the refrigerant passage cylindrical body. The peripheral wall (26) of (23) is composed of a plurality of protrusions provided at intervals in the circumferential direction.

  The first communication port (31) and the second communication port (32) of the refrigerant passage cylindrical body (23) are formed on the flat portion (26a) of the peripheral wall (26) and the partition portion (26b) on the partial cylindrical portion (26b), respectively. 29) above and below the first communication port (31) and the second communication port (32) in the vertical direction, the fourth and third heat exchange paths ( All the first heat exchange tubes (2A) constituting P4) and (P3) are arranged. Both sides of the first and second communication ports (31) and (32) in the flat portion (26a) of the peripheral wall (26) of the refrigerant passage cylindrical body (23) are the refrigerant passage cylindrical body (23) and the drying portion. When placing the desiccant container (25) in the first header tank (3), it has the function of preventing the desiccant container (25) from being damaged by the end of the first heat exchange pipe (2A). ing. Further, an outward flange (41) is integrally formed at the upper end of the refrigerant passage tubular body (23), and the outer peripheral edge of the outward flange (41) is the tubular shape of the first header tank (3). The main body (21) is in contact with the inner peripheral surface of the peripheral wall (21a). The size of the mesh-shaped filter (33) that closes the first and second communication ports (31) and (32) is such that there are more than 100 eyes in the length of 1 inch. Preferably there is. The filter (33) may be formed integrally with the peripheral wall (26) of the refrigerant passage cylindrical body (23) or separately from the peripheral wall (26) of the refrigerant passage cylindrical body (23). What is formed may be fixed to the peripheral wall (26).

  The condenser (1) is formed by brazing the parts excluding the refrigerant passing cylinder (23), the desiccant container (25) and the closing member (22) in a lump, and then the cylinder of the first header tank (3). The cylinder (23) for passing refrigerant and the desiccant container (25) are put into the main body (21) from above, and then the closure member (22) is attached to the cylindrical main body (21). The lower movement preventing portion (39) of the movement blocking means (37) of the refrigerant passing cylindrical body (23) is provided on the peripheral wall (26) of the refrigerant passing cylindrical body (23) at intervals in the circumferential direction. Therefore, when the refrigerant passage cylindrical body (23) is put into the cylindrical main body, the lower movement preventing portion (39) is deformed and the through hole (36 ) To return to the original shape. Further, when the refrigerant passing cylindrical body (23) and the desiccant container (25) are placed in the cylindrical main body (21) by the action of the peripheral wall (26) of the refrigerant passing cylindrical body (23), The desiccant container (25) is prevented from being damaged by the portion of the first heat exchange pipe (2A) protruding into the cylindrical main body (21) of the first header tank (3).

  The condenser (1) constitutes 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 (16) and the refrigerant inlet (14), and the upper header portion of the third header tank (5). (11) flows into the second heat exchange pipe (2B) of the first heat exchange path (P1) and is condensed while flowing leftward and flows into the second header tank (4). The refrigerant flowing into the second header tank (4) is condensed while flowing to the right in the second heat exchange pipe (2B) of the second heat exchange path (P2), and the third header tank (5). Into the intermediate header portion (12). The refrigerant flowing into the intermediate header portion (12) of the third header tank (5) is condensed while flowing leftward in the first heat exchange pipe (2A) of the third heat exchange path (P3). 1 Flows into the header tank (3).

  The refrigerant flowing into the first header tank (3) is a gas-liquid mixed phase refrigerant. Among the gas-liquid mixed phase refrigerant, the liquid-phase main mixed phase refrigerant is accumulated in the lower part of the first header tank (3) due to gravity. Enter the first heat exchange pipe (2A) of the heat exchange path (P4). At this time, the fourth portion in the first header tank (3) is operated by the portion of the refrigerant passage tubular body (23) below the partition portion (29) and the desiccant container (25) existing in the portion. The volume of the first portion (27) through which the first heat exchange pipe (2A) of the heat exchange path (P4) communicates is smaller than that in the case where the refrigerant passage cylindrical body (23) is not disposed, The gas-liquid separation property in the first header tank (3) is improved. Therefore, the amount of the gas-phase refrigerant flowing into the first heat exchange pipe (2A) of the fourth heat exchange path (P4) can be reduced.

  The liquid phase main mixed refrigerant entering the first heat exchange pipe (2A) of the fourth heat exchange path (P4) is supercooled while flowing rightward in the first heat exchange pipe (2A), It enters the lower header portion (13) of the three header tank (5), flows out through the refrigerant outlet (15) and the refrigerant outlet member (17), and is sent to the evaporator through the expansion valve.

  On the other hand, the gas phase component of the gas-liquid mixed phase refrigerant that has flowed into the first header tank (3) accumulates in the upper part of the first header tank (3).

  In the embodiment described above, the upper end portion of the refrigerant passing tubular body (23) may be positioned slightly above the partition portion (29). In this case, the upper end opening of the refrigerant passage cylindrical body (23) becomes a second communication port opened in the second portion (28) above the partition portion (29) in the first header tank (3). .

  FIG. 7 shows a modification of the refrigerant passing tubular body.

  The refrigerant passing tubular body (45) shown in FIG. 7 has a bottomed tubular shape with an upper end opened and a lower end closed, and the configuration thereof is the same as that of the refrigerant passing tubular body (23) of the above-described embodiment. It is the same. A desiccant (24) is placed inside the refrigerant passing tubular body (45), and an upper end opening thereof is closed by a lid (46). A through hole (47) is formed in the lid (46), and the through hole (47) is closed by a mesh filter (48). The mesh size of the mesh filter (48) is preferably such that there are more than 100 eyes in the length of 1 inch.

  Other configurations are the same as those of the refrigerant passing tubular body (23) of the above-described embodiment.

  In the refrigerant passing tubular body (45) shown in FIG. 7, the upper end portion may be positioned slightly above the partition portion (29). In this case, the through hole (47) of the lid (46) serves as a second communication port opened in the second portion (28) above the partition portion (29) in the first header tank (3).

  The capacitor | condenser by this invention is used suitably for the car air conditioner mounted in a motor vehicle.

(1): Capacitor
(1A): Condensing part
(1B): Supercooling section
(2A): 1st heat exchange tube
(2B): Second heat exchange tube
(3): First header tank
(4): Second header tank
(5): Third header tank
(21): Tubular body
(22): Closing member
(23) (45): Cylindrical body for refrigerant passage
(24): Desiccant
(25): Desiccant container
(27): 1st part
(28): Second part
(29): Partition
(31): 1st entrance
(32): Second communication port
(33): Filter
(35): Plate
(36): Through hole
(37): Movement prevention means
(38): Upper movement blocking part
(39): Lower movement blocking part
(46): Lid
(6A): 1st corrugated fin
(6B): 2nd corrugated fin
(P1): First heat exchange path
(P2): Second heat exchange path
(P3): Third heat exchange path
(P4): Fourth heat exchange path

Claims (9)

A plurality of heat exchange pipes extending in the left-right direction and arranged in parallel at intervals in the vertical direction, and a header tank extending in the vertical direction to which both left and right ends of the heat exchange pipe are connected, Three or more heat exchange paths are arranged in the vertical direction, and the refrigerant flow directions of all the heat exchange pipes constituting each heat exchange path are the same, and two adjacent heat exchange paths are arranged adjacent to each other. A condenser in which the direction of refrigerant flow in the heat exchange pipe of the heat exchange path is different,
A first header tank to which a first heat exchange pipe constituting at least two heat exchange paths including a heat exchange path at the lower end and continuously arranged is connected to either one of the left and right ends; and a first header tank And a second header tank to which a second heat exchange pipe constituting a heat exchange path provided above the heat exchange path formed by the first heat exchange pipe connected to the first heat exchange pipe is connected. However, the upper end of the first header tank is located higher than the lower end of the second header tank, and the first header tank uses gravity. A heat exchange path at the upper end of a heat exchange path comprising a first heat exchange pipe connected to the first header tank and a second header tank connected to the second header tank. A heat exchange path consisting of two heat exchange tubes and A refrigerant condensing path for condensing the refrigerant, wherein the heat exchanging path excluding the upper end heat exchanging path among the heat exchanging paths composed of the first heat exchanging pipes connected to the first header tank supercools the refrigerant. Refrigerant subcooling, which is a supercooling path, in which a refrigerant passing tubular body is disposed in the first header tank, and at least a part of the refrigerant passing tubular body is adjacent to the lower side of the refrigerant condensing path in the first header tank. The refrigerant is condensed in the first header tank in the first header tank between the peripheral wall of the first header tank and the refrigerant passage cylindrical body. A partition that divides into a first part through which the first heat exchange pipe of the refrigerant supercooling path adjacent to the lower part of the path communicates and a second part above the first part is provided, and is a cylinder for refrigerant passage. Open to the first part in the first header tank in the body Second communication port is formed, the capacitor at least one of the communication port of the first and second communication port is closed by a filter having an opening to the first communication port and a second moiety. The capacitor according to claim 1, wherein the first header tank includes a cylindrical main body having at least one of an upper end and a lower end opened, and a closing member detachably attached to an open end of the cylindrical main body. The cylinder for refrigerant passage has a bottomed cylinder shape whose upper end is open and whose lower end is closed, and the first communication port and the second communication port are formed on the peripheral wall of the refrigerant passage cylindrical body. The capacitor according to claim 1 or 2, wherein a desiccant container in which the desiccant is placed is accommodated in the cylindrical body. The cylinder for refrigerant passage has a bottomed cylinder shape whose upper end is open and whose lower end is closed, and the first communication port and the second communication port are formed on the peripheral wall of the refrigerant passage cylindrical body. 3. The capacitor according to claim 1, wherein a desiccant is placed in the cylindrical body, and an upper end opening of the refrigerant passing cylindrical body is closed by a lid. The partition provided between the peripheral wall of the first header tank and the refrigerant passage cylindrical body is formed of a plate-like body joined to the peripheral wall of the first header tank, and the refrigerant passage cylindrical body is formed into a plate-like body. A movement blocking means is provided through the formed through-hole, and the refrigerant passage cylindrical body is provided with a movement blocking means for blocking the movement of the refrigerant passage cylindrical body in the vertical direction with a partition portion made of a plate-like body sandwiched from above and below. The capacitor according to claim 1. The movement preventing means is provided in an outwardly projecting shape from the refrigerant passing tubular body and engages with the upper surface of the partitioning portion, and the movement preventing means is provided in an outwardly projecting shape from the refrigerant passing tubular body and is partitioned. 6. The capacitor according to claim 5, further comprising a lower movement blocking portion that engages with a lower surface of the portion. The upper movement blocking portion is formed of a flange provided over the entire circumference of the peripheral wall of the refrigerant passing tubular body, and the lower movement blocking portion is provided in the circumferential wall of the refrigerant passing cylindrical body with a circumferential interval. The capacitor according to claim 6, further comprising a plurality of protrusions. The capacitor according to any one of claims 2 to 7, wherein an upper end of the refrigerant passing tubular body is located above a first heat exchange pipe at an upper end connected to the first header tank. The first heat exchange pipe constituting at least two heat exchange paths is connected to the first header tank, and the second heat exchange pipe constituting at least one heat exchange path is connected to the second header tank. The capacitor | condenser in any one of -8.

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