JP2007003183A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of improving work efficiency when temporarily fixing a partition member. <P>SOLUTION: The heat exchanger suitably used as a condenser is provided with a pair of headers 2 arranged with an interval to each other, and a plurality of heat exchange tubes with both ends arranged between both headers 2 connected to both headers 2. At least one of the headers 2 is partitioned into a plurality of header parts 2b, 2c aligned in a length direction of the header 2 by the partition member 8. An outlet side joint member 14 having a refrigerant passage 15 communicated with a refrigerant outlet 9 and connecting refrigerant outlet tubes is fixed to the header 2 partitioned into the plurality of header parts 2b, 2c. The partition member 8 is integrally formed with the outlet side joint member 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat exchanger used in, for example, a refrigeration cycle constituting a car air conditioner.

  As a heat exchanger used in the refrigeration cycle, it includes a pair of headers spaced apart from each other and a plurality of heat exchange tubes disposed between both headers and having both end portions connected to both headers. There is known a heat exchanger in which one header is partitioned by two header portions arranged in the length direction of the header by a partition member (see Patent Document 1). In the heat exchanger described in Patent Document 1, the partition member is formed independently of other members and has two protrusions extending in a direction perpendicular to the longitudinal direction of the header, and is formed in the header. The partition member is brazed to the header in a state where it is inserted into the slit and bent so that both protrusions sandwich the header from a direction perpendicular to the longitudinal direction of the header.

However, in the case of the heat exchanger described in Patent Document 1, it is necessary to fold and fix the protrusions to the header after inserting the partition member into the slit formed in the header, and the temporary fixing operation of the partition member is troublesome. .
JP 2002-267388 A

  The objective of this invention is providing the heat exchanger which can solve the said problem and can improve workability | operativity at the time of temporarily fixing a partition member.

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

1) A pair of headers arranged at a distance from each other, and a plurality of heat exchange pipes arranged between both headers and having both ends connected to both headers, at least one of the headers being The heat exchanger is partitioned into a plurality of header portions arranged in the length direction of the header by a partition member,
A heat exchanger in which another component mounting member is fixed to a header partitioned into a plurality of header portions, and the partition member is integrally formed with the other component mounting member.

  2) The heat exchanger according to 1), wherein the other component mounting member is a joint member that connects a pipe of the refrigeration cycle, and the joint member has a refrigerant passage that communicates with one header portion.

  3) The heat exchanger according to 2) above, wherein one end opening of the refrigerant passage of the joint member is directly communicated with a refrigerant passage hole formed in the header portion.

  4) The heat exchanger according to 2) above, wherein one end opening of the refrigerant passage of the joint member and the refrigerant passage hole formed in the header portion are communicated with each other via a tubular communication member.

  5) The first header is partitioned into a plurality of header portions by a partition member, and the second header is one less than the number of header portions of the first header and two adjacent first headers. A header portion arranged so as to straddle the header portion, all the heat exchange tubes are divided into a plurality of paths made of a plurality of heat exchange tubes arranged in the length direction of the header, and one partition member The heat exchanger according to any one of 2) to 4), which is integrally formed with the joint member.

  6) Each of the first header and the second header is divided into the same number of header portions by the partition member, and the header portion of each header is arranged so as to straddle two adjacent header portions of the other header, Among the above 2) to 4), the exchange pipe is divided into a plurality of paths composed of a plurality of heat exchange pipes arranged in the length direction of the header, and one partition member is formed integrally with the joint member. The heat exchanger in any one of.

  7) The refrigerant flow directions in the heat exchange pipes constituting each path are the same, and the refrigerant flow directions in the heat exchange pipes constituting the two adjacent paths are opposite to each other 5) or 6) The described heat exchanger.

  8) The heat exchanger according to 7) above, wherein the number of heat exchange tubes constituting each path decreases from one end side to the other end side in the length direction of the header.

  9) The heat exchanger according to 8) above, wherein a partition member formed integrally with the joint member is disposed between a path having the smallest number of heat exchange tubes and a path adjacent thereto.

  10) The heat exchanger according to 9) above, wherein the joint member connects the refrigerant outlet pipe.

  11) A refrigeration cycle comprising a compressor, a condenser, a decompressor and an evaporator, and using a chlorofluorocarbon refrigerant, wherein the condenser comprises the heat exchanger according to any one of 1) to 10) above Refrigeration cycle.

  12) A refrigeration cycle comprising a compressor, a gas cooler, an evaporator, a decompressor, and an intermediate heat exchanger for exchanging heat between the refrigerant coming out of the gas cooler and the refrigerant coming out of the evaporator, and using a supercritical refrigerant. A refrigeration cycle in which the gas cooler includes the heat exchanger according to any one of 1) to 10) above.

  13) A vehicle equipped with the refrigeration cycle described in 11) or 12) above as a car air conditioner.

  According to the heat exchanger of the above 1), it becomes possible to temporarily fix the partition member to the header by temporarily fixing the other component mounting member to the header, and the workability of temporarily fixing the partition member to the header is improved. . That is, the other component mounting member is usually brazed to the header at the same time as the header, the heat exchange pipe, the fin, etc. in a state of being temporarily fixed to the header. It is a normal operation in manufacturing. And when the partition member is integrally formed in the other component mounting member, it becomes possible to temporarily fix the partition member only by temporarily fixing the other component mounting member. Thus, it becomes unnecessary to temporarily fix the partition member alone, and workability is improved.

  According to the heat exchangers 2) to 10), the number of parts is reduced, and the workability during production is improved. That is, the joint member is an indispensable part in the heat exchanger, and if the partition member is formed integrally with the joint member, the number of parts is reduced compared to the case where the joint member and the partition member are formed separately. .

  Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the heat exchanger according to the present invention is applied to a condenser of a refrigeration cycle using a chlorofluorocarbon refrigerant.

  In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum. Further, in the following description, the top and bottom, left and right in FIG. 1 are referred to as top and bottom and left and right, and the back side (downstream side in the ventilation direction) of FIG.

  FIG. 1 shows the overall configuration of a capacitor to which a heat exchanger according to the present invention is applied, and FIGS. 2 and 3 show the configuration of the main part thereof.

  In FIG. 1, a capacitor (1) includes aluminum first and second headers (2) (3) arranged in parallel in the left-right direction and extending in the vertical direction, and both headers (2) ( 3) A plurality of aluminum flat heat exchange tubes (with the width direction directed in the front-rear direction and spaced apart in the vertical direction, and both ends connected to both headers (2) and (3), respectively ( 4) and an aluminum corrugated fin (5) disposed between adjacent heat exchange tubes (4) and brazed to the heat exchange tubes (4). Aluminum side plates (6) are arranged outside the heat exchange tubes (4) at the upper and lower ends, respectively, spaced from the heat exchange tubes (4), and the side plates (6) and the heat exchange tubes (4 ) And an aluminum corrugated fin (5) are also brazed to the side plate (6) and the heat exchange pipe (4).

  The first header (2) is divided into upper, middle, and lower three header portions (2a), (2b), and (2c) by a plurality of, here two plate-like partition members (7) and (8). A refrigerant inlet (refrigerant passage hole) (not shown) is formed at the upper end of (2a). The lengths of the three header portions (2a), (2b), and (2c) of the first header (2) are shortened in order from the top. Moreover, the refrigerant | coolant exit (9) (refrigerant passage hole) is formed in the upper end part of the lower header part (2c) (refer FIG. 2). The number of the second header (3) is one less than the partition members (7) and (8) of the first header (2). Here, the upper and lower header sections (3a) are formed by one plate-like partition member (11). (3b) so that the number of header parts (3a) and (3b) of the second header (3) is greater than the number of header parts (2a), (2b) and (2c) of the first header (2). Is one less. The partition member (11) of the second header (3) is located slightly below the middle of the height between the two partition members (7), (8) of the first header (2).

  The capacitor (1) includes a portion above the upper partition member (7) of the first header (2), and a partition between the upper partition member (7) of the first header (2) and the second header (3). A portion between the member (11), a portion between the partition member (11) of the second header (3) and the lower partition member (8) of the first header (2), and a portion of the first header (2) A plurality of heat exchange pipes (4) arranged in a row vertically below the lower partition member (8), here a plurality of first to fourth four paths (12A) (12B) (12C) and (12D) are provided. The number of heat exchange tubes (4) constituting each path (12A) to (12D) decreases from one end side in the length direction of both headers (2) and (3), here from the upper side to the lower side. Yes. Further, the flow direction of the refrigerant in the heat exchange pipe (4) constituting each path (12A) to (12D) is the same, and two adjacent paths (12A) (12B), (12B) (12C) and (12C) The flow direction of the refrigerant in the heat exchange pipe (4) constituting (12D) is opposite. Therefore, the gas phase refrigerant flowing into the condenser (1) from the refrigerant inlet passes through the condenser (1) in units of each path (12A) to (12D) before flowing out from the refrigerant outlet (9) as a liquid phase. It is designed to flow in a meandering manner.

  An aluminum inlet side joint member (13) is brazed to the upper end of the upper header portion (2a) of the first header (2), and a refrigerant inlet pipe (not shown) is connected to the inlet side using an aluminum fixing member. It is connected to the joint member (13). The inlet side joint member (13) has a refrigerant passage (not shown) communicating with the refrigerant inlet. An aluminum outlet side joint member (14) as another component mounting member is brazed so as to straddle the middle header portion (2b) and the lower header portion (2c) of the first header (2), not shown. The refrigerant outlet pipe is connected to the outlet side joint member (14) using an aluminum fixing member. A lower partition member (8) of the first header (2) is integrally formed with the outlet side joint member (14).

  As shown in FIGS. 2 and 3, the outlet side joint member (14) is formed with a refrigerant passage (15) communicating with the refrigerant outlet (9) of the lower header portion (2c) of the first header (2). . The refrigerant passage (15) has a bottomed first portion (15a) extending horizontally from the left side surface of the outlet side joint member (14) to the right at a height slightly above the lower partition member (8). A penetrating second portion (15b) connected to the right end portion of the first portion (15a) and extending obliquely downward to the right toward the refrigerant outlet (9) and opened on the right surface of the outlet side joint member (14); It becomes more. The right side opening of the outlet side joint member (14) in the second part (15b) is directly communicated with the refrigerant outlet (9). The lower partitioning member (8) formed integrally with the outlet side joint member (14) is formed in the first header (2), and passes through the slit (16) connected to the upper end of the refrigerant outlet (9). Inserted in 2) and brazed to the first header (2).

  The condenser (1) described above constitutes a refrigeration cycle that uses a chlorofluorocarbon refrigerant together with a compressor, a decompressor (expansion valve), an evaporator, and a gas-liquid separator. Such a refrigeration cycle is used as a car air conditioner of a vehicle such as an automobile.

  In the condenser (1), the refrigerant flowing from the refrigerant inlet pipe into the upper header portion (2a) of the first header (2) through the refrigerant passage and the refrigerant inlet of the inlet side joint member (13) passes through the first path ( 12A) flows into the upper header portion (3a) of the second header (3), passes through the second path (12B), flows into the middle header portion (2b) of the first header (2), It flows into the lower header part (3b) of the second header (3) through the third path (12C), and further passes through the fourth path (12D) to the lower header part (2c) of the first header (2). Flows in. The refrigerant flowing into the lower header portion (2c) flows out to the refrigerant outlet pipe through the refrigerant outlet (9) and the refrigerant passage (15) of the outlet side joint member (14).

  FIG. 4 shows another embodiment of a condenser to which the heat exchanger according to the present invention is applied.

  In the case of the capacitor shown in FIG. 4, the slit (16) for inserting the lower partition member (8) of the first header (2) is spaced above the refrigerant outlet (9) of the lower header portion (2c). Formed. In addition, the refrigerant passage (21) leading to the refrigerant outlet (9) of the lower header portion (2c) of the first header (2) in the outlet side joint member (20) as the other component mounting member is provided in the lower partition member (8). At a height slightly above the bottom, the bottom-side first portion (21a) extending horizontally from the left side surface of the outlet side joint member (20) to the right end of the first portion (21a). It consists of a penetrating second portion (21b) that extends downward and opens in the lower surface of the outlet side joint member (20). One end portion of the aluminum tubular communication member (22) is inserted into the second portion (21b) and brazed to the outlet side joint member (20), and the other end portion is also the refrigerant outlet (9). The lower end opening of the second portion (21b) in the refrigerant passage (21) of the outlet side joint member (20) is inserted into the first header (2), thereby the tubular communication member (22). Through the refrigerant outlet (9).

  Other configurations are the same as those of the capacitor (1) of the first embodiment described above, and the same components and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  Similarly to the capacitor (1) of the first embodiment, the capacitor of the second embodiment also constitutes a refrigeration cycle that uses a fluorocarbon refrigerant together with a compressor, a decompressor (expansion valve), an evaporator, and a gas-liquid separator. It is supposed to be. Such a refrigeration cycle is used as a car air conditioner of a vehicle such as an automobile.

In the two embodiments described above, the heat exchanger according to the present invention is applied to a condenser of a refrigeration cycle that includes a compressor, a condenser, a decompressor (expansion valve), an evaporator, and a gas-liquid separator, and uses a chlorofluorocarbon refrigerant. However, the present invention is not limited thereto, and other heat exchangers such as a compressor, a gas cooler, an evaporator, a decompressor, a gas-liquid separator, and a refrigerant that has come out of the evaporator and a refrigerant that has come out of the evaporator Is used as a gas cooler in a refrigeration cycle that uses a supercritical refrigerant such as CO ₂ . The refrigeration cycle using this supercritical refrigerant is used as a car air conditioner of a vehicle such as an automobile.

  In the two embodiments described above, the lower partition member (8) of the first header (2) is integrally formed with the outlet side joint members (14) and (20). However, the present invention is not limited to this. Alternatively, the other partition members (7) and (11) may be integrally formed with another other component mounting member, for example, an inlet side joint member (13), a capacitor mounting bracket (not shown), or the like.

  Furthermore, in the two embodiments described above, the number of header parts (3a) (3b) of the second header (3) is greater than the number of header parts (2a) (2b) (2c) of the first header (2). Although the number is reduced by one, the present invention is not limited to this, and both headers (2) and (3) may be partitioned by a partition member so that the number of header portions is the same. In this case, a refrigerant inlet is formed in one header, and a refrigerant outlet is formed in the other header.

It is a front view showing the whole composition of a 1st embodiment of the capacitor to which the heat exchanger by this invention is applied. FIG. 2 is a partially enlarged vertical sectional view showing a part of the capacitor shown in FIG. 1. FIG. 2 is an exploded perspective view showing a part of a middle header portion and a lower header portion of a first header and an outlet side joint member in the capacitor shown in FIG. 1 in an enlarged manner. It is a figure equivalent to FIG. 2 which shows 2nd Embodiment of the capacitor | condenser to which the heat exchanger by this invention is applied.

Explanation of symbols

(1): Capacitor (heat exchanger)
(2): First header
(2a) (2b) (2c): Header part
(3): Second header
(3a) (3b): Header part
(4): Heat exchange pipe
(7): Partition member
(8): Partition member
(9): Refrigerant outlet (refrigerant passage hole)
(11): Partition member
(12A) (12B) (12C) (12D): Pass
(14) (20): Outlet side joint member (other parts mounting member)
(15) (21): Refrigerant passage
(22): Tubular communicating member

Claims (13)

A pair of headers arranged at a distance from each other and a plurality of heat exchange pipes arranged between both headers and having both ends connected to both headers, at least one of the headers being a partition A heat exchanger that is partitioned into a plurality of header portions arranged in the length direction of the header by a member,
A heat exchanger in which another component mounting member is fixed to a header partitioned into a plurality of header portions, and the partition member is integrally formed with the other component mounting member. The heat exchanger according to claim 1, wherein the other component mounting member is a joint member that connects piping of the refrigeration cycle, and the joint member has a refrigerant passage that communicates with one header portion. The heat exchanger according to claim 2, wherein one end opening of the refrigerant passage of the joint member is directly communicated with a refrigerant passage hole formed in the header portion. The heat exchanger according to claim 2, wherein one end opening of the refrigerant passage of the joint member and the refrigerant passage hole formed in the header portion are communicated with each other via a tubular communication member. The first header is divided into a plurality of header parts by a partition member, and the second header is one less than the number of header parts of the first header and two adjacent header parts of the first header The header part is arranged so as to straddle, all the heat exchange tubes are divided into a plurality of paths composed of a plurality of heat exchange tubes arranged in the length direction of the header, and one partition member is a joint member The heat exchanger according to any one of claims 2 to 4, wherein the heat exchanger is formed integrally with the heat exchanger. The first header and the second header are partitioned into the same number of header portions by the partition members, respectively, and the header portions of each header are arranged so as to straddle two adjacent header portions of the other header, and all the heat exchange tubes Are divided into a plurality of paths composed of a plurality of heat exchange tubes arranged in the length direction of the header, and one partition member is formed integrally with the joint member. The heat exchanger as described in. The heat according to claim 5 or 6, wherein the flow direction of the refrigerant in the heat exchange pipe constituting each path is the same, and the flow direction of the refrigerant in the heat exchange pipe constituting the two adjacent paths is opposite. Exchanger. The heat exchanger according to claim 7, wherein the number of heat exchange tubes constituting each path decreases from one end side in the length direction of the header toward the other end side. The heat exchanger according to claim 8, wherein a partition member formed integrally with the joint member is disposed between a path having the smallest number of heat exchange tubes and a path adjacent thereto. The heat exchanger according to claim 9, wherein the joint member connects the refrigerant outlet pipe. A refrigeration cycle comprising a compressor, a condenser, a decompressor and an evaporator and using a chlorofluorocarbon refrigerant, wherein the condenser comprises the heat exchanger according to any one of claims 1 to 10. A compressor, a gas cooler, an evaporator, a decompressor, and a refrigeration cycle that includes an intermediate heat exchanger that exchanges heat between the refrigerant that has come out of the gas cooler and the refrigerant that has come out of the evaporator, and uses a supercritical refrigerant, A refrigeration cycle in which the gas cooler comprises the heat exchanger according to any one of claims 1 to 10. A vehicle in which the refrigeration cycle according to claim 11 or 12 is mounted as a car air conditioner.

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