JP2020101335A - Condenser - Google Patents

Abstract

To provide a condenser capable of uniformizing a flow amount of a refrigerant flowing in a total heat exchange tube of a heat exchange path for refrigerant condensation without increasing a cost of manufacture.SOLUTION: An inlet member 16 having a refrigerant inflow passage 17 is connected to a part deviating toward a lower end side from a longitudinal center part in a condensation part inlet header 12 of a condenser. A part deviating toward a lower end side of a peripheral wall 12a of the condensation part inlet header 12 is provided with an inflow part 18 which makes a refrigerant sent out of the refrigerant inflow passage 17 of the inlet member 16 flow into the upper side as a longitudinal center part side in the condensation part inlet header 12. The inflow part 18 comprises: a guide part 24 integrally provided so as to be recessed to the inner side of the peripheral wall 12a of the condensation part inlet header 12, and capable of guiding upward the refrigerant sent out of the refrigerant inflow passage 17 of the inlet member 16; and an inflow port 25 formed so as to be opened upward, between an upper end part of the guide part 24, and a non-deformation part at an upper side from the guide part 24 in the peripheral wall 12a.SELECTED DRAWING: Figure 3

Description

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

In this specification and claims, up and down, left and right refer to the up and down, left and right in FIGS. 1, 5 and 8, and the ventilation direction in the front and back of the paper in FIGS. 1, 5 and 8. ..

For example, as a condenser for a car air conditioner, at least one heat exchange path composed of a plurality of heat exchange tubes arranged in parallel with the longitudinal direction oriented in the left-right direction and the longitudinal direction oriented in the vertical direction And the condenser section inlet header through which the refrigerant flow direction upstream end of the heat exchange path on the most upstream side of the refrigerant flow direction communicates, and the longitudinal direction is arranged in the vertical direction, and the most downstream side of the refrigerant flow direction. The heat exchanger is provided with a condenser having a condenser outlet header through which the downstream end in the refrigerant flow direction of the heat exchange path communicates and the refrigerant that has flowed through the total heat exchange path of the condenser enters, and the condenser inlet header has both ends. An inlet member that has an opened refrigerant inflow path and sends the refrigerant into the condensation section inlet header is joined, and a refrigerant outflow path with both ends opened is provided in the condensation section outlet header and the refrigerant is sent out from the inside of the condensation section outlet header. A capacitor to which an outlet member is joined is widely known (hereinafter referred to as a known capacitor).

In order to improve the heat exchange efficiency in the above-mentioned known condenser, the height position of the inflow part where the refrigerant flows into the condensation part inlet header and the height position of the outflow part where the refrigerant flows out from the condensation part outlet header are adjusted. It is effective to equalize the flow rate of the refrigerant flowing through the total heat exchange tubes forming the heat exchange path leading to the condenser inlet header.

By the way, in the case of a car air conditioner installed in an automobile, the height position of the refrigerant inflow part to the condenser inlet header of the condenser may be restricted in consideration of the arrangement of the pipes connecting the parts constituting the car air conditioner. In the known condenser described above, it may be difficult to make the flow rate of the refrigerant flowing through the total heat exchange tubes of the heat exchange path leading to the condenser inlet header uniform.

As a condenser capable of equalizing the flow rate of the refrigerant flowing through the total heat exchange tubes of the refrigerant condensing heat exchange path without adjusting the height positions of the refrigerant inflow portion and the refrigerant outflow portion, the present applicant firstly A plurality of condensing part inlet headers arranged in the up-down direction, and arranged in parallel with the longitudinal direction oriented in the left-right direction and at intervals in the vertical direction, and one end in the longitudinal direction connected to the condensing part inlet header. And a heat exchange path consisting of a heat exchange tube, the condenser inlet header has a refrigerant inflow passage with both ends open, and a portion biased toward the one end side from the central portion in the longitudinal direction in the condenser inlet header. The inlet member for sending the refrigerant to is joined to, the one end opening of the refrigerant inflow passage of the inlet member serves as the inflow port from the outside, and the other end opening serves as the outflow port into the condensation unit inlet header. An opening is formed in a portion of the peripheral wall of the inlet header that is biased toward one end side with respect to the central portion in the longitudinal direction, and the insertion portion inserted into the condensation portion inlet header through the opening is inserted into the inlet member and the condensation portion inlet. It is provided so that there is a gap between it and a part of the peripheral wall of the header, the outlet of the refrigerant inflow passage is open to the insertion portion, the outlet of the refrigerant inflow passage, the refrigerant to the condenser inlet header A capacitor proposed so as to flow out toward the central portion side in the longitudinal direction (see Patent Document 1).

JP, 2008-13322, A

However, in the condenser described in Patent Document 1, an opening is formed in a portion of the peripheral wall of the condenser inlet header that is biased toward one end side from the central portion in the longitudinal direction, and the inlet member is inserted into the condenser inlet header through the opening. The inserted portion is provided so that a gap exists between the inserted portion and a part of the peripheral wall of the condenser inlet header, and the outlet of the refrigerant inflow path is open to the inserted portion, and the refrigerant inflow is formed. The outlet of the passage is designed to allow the refrigerant to flow out toward the central portion side in the longitudinal direction of the condenser inlet header, which complicates the shape of the inlet member and increases the manufacturing cost. There is a problem of high cost.

An object of the present invention is to solve the above problems and to provide a condenser capable of equalizing the flow rate of the refrigerant flowing through the total heat exchange tubes of the refrigerant condensing heat exchange path without increasing the manufacturing cost.

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

1) Condensing part inlet headers with the longitudinal direction oriented in the up-down direction, and condensing part inlet headers with the longitudinal direction oriented in the left-right direction and vertically spaced apart from each other, and one end in the longitudinal direction being the condensing part inlet header. And a plurality of heat exchange pipes connected to each other, and has a refrigerant inflow path with both ends open at a portion of the outer peripheral surface of the peripheral wall of the condenser inlet header that is biased toward one end side from the central portion in the longitudinal direction. In the condenser where the inlet member for sending the refrigerant into the inlet header is joined,
An inflow that causes the refrigerant sent from the refrigerant inflow passage of the inlet member to flow toward the central portion in the longitudinal direction in the condensing portion inlet header to a portion of the peripheral wall of the condensing portion inlet header that is deviated to one end side from the central portion in the longitudinal direction. Is provided on the peripheral wall of the condenser inlet header, and the inflow portion is recessed inward and the refrigerant sent from the refrigerant inflow passage of the inlet member is provided at the center in the longitudinal direction of the condenser inlet header. The guide portion that can be guided toward the side of the condensation portion, the end portion of the condensation portion inlet header in the longitudinal direction of the guide portion, and the center portion of the circumferential wall of the condensation portion inlet header in the longitudinal direction of the condensation portion inlet header rather than the guide portion. And a non-deformable portion on the side of the condenser, and an inlet formed so as to open toward the central portion side in the longitudinal direction of the condenser inlet header.

2) A linear notch that extends in the ventilation direction is formed in a portion of the peripheral wall of the condenser inlet header that is biased toward one end side with respect to the center in the longitudinal direction. 2. The capacitor according to 1) above, wherein the guide portion and the inlet of the inflow portion are formed by indenting the portion on the opposite side to the inside.

3) A condenser section, a supercooling section provided below or above the condenser section, and a liquid receiving section provided between the condenser section and the subcooler section. At least one heat exchange path consisting of a plurality of heat exchange tubes arranged in parallel in the left-right direction and at intervals in the up-down direction, and the refrigerant flow direction downstream end of the most downstream heat exchange path in the refrigerant flow direction And a condensing part outlet header into which the refrigerant flowing through the total heat exchange path of the condensing part flows, and the condensing part inlet header has a refrigerant flow direction upstream side end part of the refrigerant flow direction uppermost side heat exchange path. The supercooling section is made to pass through, and the supercooling section inlet header is arranged with its longitudinal direction oriented in the vertical direction, the subcooling section outlet header is arranged with its longitudinal direction oriented in the vertical direction, and the longitudinal direction is oriented in the left-right direction. And at least one subcooling heat exchange path composed of a plurality of heat exchange pipes arranged in parallel at a distance in the vertical direction, and the supercooling section inlet header is provided with a supercooling section on the most upstream side in the refrigerant flow direction. The refrigerant flow direction upstream side end portion of the cooling heat exchange path is communicated, the refrigerant flow direction downstream side end portion of the refrigerant cooling direction most downstream side supercooling heat exchange path is communicated to the supercooling section outlet header, The liquid receiving part is made to communicate with the condensing part outlet header and the supercooling part inlet header, and the refrigerant flowing out from the condensing part outlet header flows into the subcooling part inlet header via the liquid receiving part. The capacitor described in 1) or 2) above.

4) The condenser according to the above 3), wherein the condensing part is provided with one heat exchange path, and all the heat exchange pipes of the heat exchanging path are connected to the condensing part inlet header and the condensing part outlet header.

5) A first header tank whose longitudinal direction is oriented vertically is arranged at one end side in the longitudinal direction of the heat exchange tube, and a second header tank and a third header tank whose longitudinal direction is oriented vertically are arranged at the other end side. The header tank is provided such that the third header tank is located outside the second header tank in the left-right direction, and the first header tank has the condensation section inlet header and the supercooling section outlet header that are located on the upper side. Is provided in the second header tank, a condenser outlet header is provided in the entire second header tank, a total heat exchange pipe of a heat exchange path of the condenser is connected to the condenser outlet header, and the lower end of the third header tank is the second header tank. Is located below the lower end of the second header tank, the upper end is located above the lower end of the second header tank, and the supercooling section inlet is located in a portion of the third header tank located below the lower end of the second header tank. The header is provided, and the inside of the condenser outlet header of the second header tank and the portion of the third header tank located above the lower end of the second header tank are communicated with each other through the communicating portion. ) Capacitors listed.

According to the condensers of 1) to 5) above, the refrigerant sent out from the refrigerant inflow passage of the inlet member is provided in the condenser inlet header in a portion of the peripheral wall of the condenser inlet header that is biased toward one end side with respect to the central portion in the longitudinal direction. An inflow portion for inflowing toward the central portion side in the longitudinal direction of the condenser is provided integrally with the peripheral wall of the condenser inlet header and is recessed inward and sent out from the refrigerant inflow passage of the inlet member. The guide portion that can guide the collected refrigerant toward the central portion side in the longitudinal direction of the condensation portion inlet header, the longitudinal central portion side end portion of the condensation portion inlet header in the guide portion, and the peripheral wall of the condensation portion inlet header Between the guide portion and the non-deformable portion on the central side in the longitudinal direction of the condensation section inlet header, since the inlet is formed so as to open toward the central section side in the longitudinal direction of the condensation section inlet header, Refrigerant sent into the condenser inlet header through the refrigerant inlet passage of the inlet member is guided by the guide portion and the inlet of the inlet of the peripheral wall of the condenser inlet header to the longitudinal center side in the condenser inlet header. It is also possible to flow to the side opposite to the central portion in the longitudinal direction through the gap between the guide portion and the peripheral wall of the condenser inlet header. Therefore, the refrigerant fed into the condenser inlet header through the refrigerant inlet passage of the inlet member can be spread over the entire length in the condenser inlet header. As a result, the refrigerant that has flowed into the condenser inlet header through the inflow portion can be evenly distributed to all the heat exchange tubes connected to the condenser inlet header, and the performance of the condenser is prevented from deteriorating. It will be possible.

Moreover, the guide part and the inflow port are provided with a linear cut extending in the ventilation direction on the peripheral wall of the condensation part inlet header, and the part on the opposite side to the central part in the longitudinal direction of the condensation part inlet header is sandwiched between the guide parts and the inflow port. Since it can be formed by denting in one direction, the manufacturing cost is lower than that in the case of forming the inlet member described in Patent Document 1. Therefore, it is possible to prevent an increase in the manufacturing cost of the entire capacitor.

1 is a front view specifically showing the overall configuration of a first embodiment of a capacitor according to the present invention. It is a front view which shows the capacitor of FIG. 1 typically. It is the vertical cross section seen from the front which shows a part of capacitor|condenser of FIG. It is an expansion perspective view which shows a part of condensation part inlet header of the condenser of FIG. It is a front view which shows concretely the whole structure of the 2nd Embodiment of the capacitor by this invention. It is a front view which shows the capacitor of FIG. 5 typically. FIG. 6 is a diagram corresponding to FIG. 3 showing a main part of the capacitor of FIG. 5. It is a front view which shows concretely the whole structure of the 3rd Embodiment of the capacitor by this invention. It is a front view which shows the capacitor of FIG. 8 typically.

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

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

Further, the same reference numerals are given to the same parts and the same parts throughout the drawings.

1 specifically shows the overall configuration of a first embodiment of a capacitor according to the present invention, FIG. 2 schematically shows the capacitor of FIG. 1, and FIGS. 3 and 4 show the configuration of the main part of the capacitor of FIG. Indicates. In FIG. 2, illustration of individual heat exchange tubes is omitted, and illustration of corrugated fins and side plates is also omitted.

In FIGS. 1 and 2, the condenser (1) includes a condenser section (2), a supercooling section (3) provided below the condenser section (2), and a condenser in a state in which the longitudinal direction is oriented vertically. Liquid that is provided between the section (2) and the supercooling section (3) and that stores the liquid-phase-based refrigerant condensed in the condensation section (2) and supplies the liquid-phase-based refrigerant to the supercooling section (3) It consists of an aluminum tank-shaped liquid receiver (4) (liquid receiving part) that has the function of a reservoir, and is oriented vertically with the longitudinal direction in the horizontal direction and the longitudinal direction in the horizontal direction. A plurality of flat heat exchange tubes (5) made of aluminum are arranged, and the longitudinal end portions of the heat exchange tubes (5) are arranged with a space in the left-right direction with the longitudinal direction facing up and down. The heat exchange pipes (5) are arranged between the two connected aluminum header tanks (6) and (7) and adjacent heat exchange pipes (5) and outside the heat exchange pipes (5) at both upper and lower ends. Aluminum corrugated fins (8) joined by brazing material, and aluminum side plates (9) arranged outside the corrugated fins (8) at the upper and lower ends and joined by brazing material to the corrugated fins (8). Equipped with. Hereinafter, joining with a brazing material is referred to as brazing.

The condenser section (2) and the supercooling section (3) of the condenser (1) each include at least one heat exchange tube (5), which is vertically aligned in succession. P1) (P2) is provided, the heat exchange path (P1) provided in the condensing part (2) becomes the refrigerant condensing path, and the heat exchange path (P2) provided in the subcooling part (3) is the refrigerant It is a supercooling path. All the heat exchange tubes (5) constituting each heat exchange path (P1) (P2) have the same refrigerant flow direction, and the heat exchange tubes (5) of the two adjacent heat exchange paths are the same. The refrigerant flow direction is different. Here, the heat exchange path (P1) of the condensing part (2) is called a first heat exchange path, and the heat exchange path (P2) of the supercooling part (3) is called a second heat exchange path. In addition, in this embodiment, since one first heat exchange path (P1) is provided in the condensation section (2), the first heat exchange path (P1) is arranged in the refrigerant flow direction of the condensation section (2). At the same time as the heat exchange path on the most upstream side, it is also the heat exchange path on the most downstream side in the refrigerant flow direction.

In both header tanks (6) and (7), an aluminum partition member is provided between the first heat exchange path (P1) and the second heat exchange path (P2) and at the same level on the lower side ( It is divided into two compartments lined up and down by 11), and the part of the condenser (1) that is located above both partition members (11) is the condensing part (2), and is separated from both partition members (11). Also, the part located below is the supercooling part (3). Since the condenser section (2) is provided with one first heat exchange path (P1), the compartment above the partition member (11) in the right header tank (6) becomes the condenser section inlet header (12). In addition, the partition above the partition member (11) in the left header tank (7) serves as the condensation section outlet header (13). Further, since one second heat exchange path (P2) is provided in the supercooling section (3), the section below the partition member (11) in the left header tank (7) is located at the subcooling section inlet header ( 14), and a section below the partition member (11) in the right header tank (6) serves as a supercooling section outlet header (15).

A portion of the outer peripheral surface of the peripheral wall (12a) of the condenser inlet header (12) that is closer to one end side than the central portion (X) in the longitudinal direction, here, a portion that is closer to the lower end side, is a refrigerant inflow path with both ends open (17 And an aluminum inlet member (16) for feeding the refrigerant into the condenser inlet header (12) is brazed. Further, the refrigerant sent out from the refrigerant inflow path (17) of the inlet member (16) is provided in a portion of the peripheral wall (12a) of the condensation section inlet header (12) that is biased toward the lower end side with respect to the central portion (X) in the longitudinal direction. An inflow part (18) for inflowing toward the central portion (X) side (upper side) in the longitudinal direction in the condensation part inlet header (12) is provided.

On the outer surface of the peripheral wall (15a) of the supercooling section outlet header (15), there is a refrigerant outlet passage (20) with both ends open, and an aluminum outlet member (19) for sending out the refrigerant to the outside of the supercooling section outlet header (15). ) Is brazed. In addition, the peripheral wall (15a) of the condenser outlet header (15) is provided with an outflow portion (21) that is formed of a through hole and that allows the refrigerant to flow out of the condenser outlet header (15).

The receiver (4) is made of aluminum and has a cylindrical shape with its longitudinal direction oriented vertically and its upper and lower ends closed, and the left header tank (7) (condenser outlet header (13) and supercooling unit). It is provided separately from the inlet header (14) and is fixed to the left header tank (7). Although not shown, a filter and a desiccant for removing foreign matters from the refrigerant are placed in the liquid receiver (4). The lower part inside the condenser outlet header (13) and the lower part inside the receiver (4), and the upper part inside the supercooling part inlet header (14) and the lower part inside the receiver (4) are left header tanks respectively. (7) and the liquid receiver (4) are communicated by the aluminum communication members (22) and (23) brazed, and the refrigerant flowing out from the condenser outlet header (13) is transferred to the liquid receiver (4). ) And flows into the supercooling section inlet header (14).

As shown in FIGS. 3 and 4, the inlet part (18) provided on the peripheral wall (12a) of the condenser inlet header (12) is integrally provided on the peripheral wall (12a) of the condenser inlet header (12). , And a guide part that can guide the refrigerant sent out from the refrigerant inflow path (17) of the inlet member (16) toward the central portion (X) in the longitudinal direction of the condensation part inlet header (12). 24), and the end portion (upper end portion) of the condensation section inlet header (12) in the longitudinal direction of the condensation section inlet header (12) and the guide section on the peripheral wall (12a) of the condensation section inlet header (12). An inlet formed so as to open upward between the non-deformed portion of the header (12) in the longitudinal direction of the condensation section inlet header (12) side (upper side) than (24). (25) consists of The guide portion (24) is inclined inwardly of the condensation portion inlet header (12) toward the central portion (X) side (upper side) in the longitudinal direction of the condensation portion inlet header (12) and has a tip end at the condensation portion inlet header (12). It is composed of an inclined part (24a) located near the central part in the left-right direction of 12) and a vertical part (24b) extending straight upward from the upper end of the inclined part (24a). The guide part (24) and the inflow port (25) of the inflow part (18) form a linear cut (26) extending in the ventilation direction in the peripheral wall (12a) of the condensing part inlet header (12), and the condensing part inlet It is formed by indenting the lower part of the peripheral wall (12a) of the header (12) with the notch (26) in between. Heat is exchanged between the guide part (24) of the inflow part (18) and a part of the peripheral wall (12a) of the condensation part inlet header (12) where the guide part (24) is not formed, and with the guide part (24). There is a gap between the end of the tube (5).

The condenser (1) constitutes a refrigeration cycle together with a compressor, an expansion valve (pressure reducer) and an evaporator, and is installed in a 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 is sent out from the refrigerant inflow path (17) of the inlet member (16) toward the inflow section (18). The refrigerant sent out toward the inflow part (18) is guided to the inclined part (24a) and the vertical part (24b) of the guide part (24) and also passes through the inflow port (25) to condense part inlet header (12). ) Flows toward the central portion (X) in the longitudinal direction. Therefore, a large amount of the refrigerant flows to the upper end of the condensing part inlet header (12), and the remaining refrigerant is the guide part (24) and the peripheral wall (12a) of the condensing part inlet header (12) and the heat exchange pipe (5). Flows below the inflow portion (18) through the gap between the end portion. As a result, the refrigerant that has flowed into the condensation section inlet header (12) through the inflow section (18) spreads throughout the condensation section inlet header (12) and is connected to the first condensation section inlet header (12). It is evenly distributed to the total heat exchange tubes (5) of the heat exchange path (P1). The refrigerant flowing into the heat exchange pipe (5) of the first heat exchange path (P1) flows leftward in the heat exchange pipe (5) of the first heat exchange path (P1) and is condensed to the outlet header (13) of the condensation section. ) Flows in. The refrigerant flowing into the condenser outlet header (13) flows into the liquid receiver (4) through the upper communication member (22).

The refrigerant that has flowed into the receiver (4) is a gas-liquid mixed phase refrigerant, and the liquid phase-based refrigerant of the gas-liquid mixed phase refrigerant accumulates in the lower part inside the receiver (4) due to gravity, and the lower communication member. Enter into the subcooler inlet header (14) through (23). The refrigerant that has entered the supercooling section inlet header (14) enters the heat exchange pipe (5) of the second heat exchange path (P2), and flows through the heat exchange pipe (5) of the second heat exchange path (P2). After being supercooled while flowing to the right, it enters the subcooler outlet header (15), flows out through the outflow portion (21) and the refrigerant outflow passage (20) of the outlet member (19), and the expansion valve And sent to the evaporator.

5 to 7 show a second embodiment of the capacitor according to the present invention. FIG. 5 specifically shows the overall configuration of the second embodiment of the capacitor according to the present invention, and FIG. 6 schematically shows the capacitor of FIG. In FIG. 6, illustration of individual heat exchange tubes is omitted, and illustration of corrugated fins and side plates is also omitted. Further, FIG. 7 shows a main part of the capacitor of FIG.

5 to 7, a portion of the condenser header inlet header (6) of the condenser (30), which is closer to one end side than the central portion (X) in the longitudinal direction of the condenser inlet header (12), is biased to the upper end side here. An aluminum inlet member (31), which has a refrigerant inflow path (17) with both ends open and which sends the refrigerant into the condenser inlet header (12), is brazed to the portion. The inlet member (31) is the inlet member (16) used in the capacitor (1) of the first embodiment described above, which is turned upside down.

Further, in the outer peripheral surface of the peripheral wall (12a) of the condensation section inlet header (12), a portion deviated to the upper end side from the central portion (X) in the longitudinal direction was sent out from the refrigerant inflow passage (17) of the inlet member (31). An inflow part (32) is provided to allow the refrigerant to flow toward the central portion (X) side (lower side) in the longitudinal direction inside the condensation part inlet header (12). The inflow part (32) is provided integrally with the peripheral wall (12a) of the condensing part inlet header (12), is recessed inward, and condenses the refrigerant sent out from the refrigerant inflow path (17) of the inlet member (16). Guide portion (33) that can be guided toward the central portion (X) side (lower side) in the longitudinal direction of the section inlet header (12), and the longitudinal center of the condensation section inlet header (12) in the guide portion (33). (X) side end (lower end) and the central portion (X) in the longitudinal direction of the condensation section inlet header (12) with respect to the guide section (33) in the peripheral wall (12a) of the condensation section inlet header (12) ( Between the non-deformed portion on the lower side) and the non-deformed portion, an inflow port (34) formed so as to open downward. The guide part (33) is inclined inwardly of the condensation part inlet header (12) toward the central portion (X) side (lower side) in the longitudinal direction of the condensation part inlet header (12) and has a tip at the condensation part inlet header. It is composed of an inclined part (33a) located near the central part in the left-right direction of (12) and a vertical part (33b) extending straight downward from the lower end of the inclined part (33a). The guide part (33) and the inflow port (34) of the inflow part (32) form a linear cut (35) extending in the ventilation direction in the peripheral wall (12a) of the condensing part inlet header (12), and the condensing part inlet It is formed by denting the upper part inward of the notch (35) in the peripheral wall (12a) of the header (12). Heat exchange between the guide part (33) of the inflow part (32) and the part of the peripheral wall (12a) of the condensation part inlet header (12) where the guide part (33) is not formed, and the guide part (33). There is a gap between the end of the tube (5).

Other configurations are similar to those of the capacitor according to the first embodiment.

In the condenser (30) having the above-described configuration, the high-temperature and high-pressure vapor-phase refrigerant compressed by the compressor is sent from the refrigerant inflow path (17) of the inlet member (31) toward the inflow section (32). The refrigerant sent toward the inflow part (32) is guided to the inclined part (33a) and the vertical part (33b) of the guide part (33) and also passes through the inflow port (34) to condense part inlet header (12). ) Flows toward the central portion (X) in the longitudinal direction. Therefore, a large amount of the refrigerant flows to the lower end of the condensation section inlet header (12), and the remaining refrigerant forms the guide section (33), the peripheral wall (12a) of the condensation section inlet header (12), and the heat exchange tube (5). Flows above the inflow portion (32) through the gap between. As a result, the refrigerant that has flowed into the condenser inlet header (12) through the inflow portion (32) spreads throughout the condenser inlet header (12) and is connected to the first inlet header (12). It is evenly distributed to the total heat exchange tubes (5) of the heat exchange path (P1). The refrigerant flowing into the heat exchange pipe (5) of the first heat exchange path (P1) flows leftward in the heat exchange pipe (5) of the first heat exchange path (P1) and is condensed to the outlet header (13) of the condensation section. ) Flows in. The refrigerant flowing into the condenser outlet header (13) flows into the liquid receiver (4) through the upper communication member (22).

The refrigerant that has flowed into the receiver (4) is a gas-liquid mixed phase refrigerant, and the liquid phase-based refrigerant of the gas-liquid mixed phase refrigerant accumulates in the lower part inside the receiver (4) due to gravity, and the lower communication member. Enter into the subcooler inlet header (14) through (23). The refrigerant that has entered the subcooling section inlet header (14) enters the heat exchange pipe (5) of the second heat exchange path (P2), and then the heat exchange pipe (5) of the second heat exchange path (P2). After being supercooled while flowing to the right through, it enters the subcooler outlet header (15), flows out through the outflow portion (21) and the refrigerant outflow passage (20) of the outlet member (19), and expands. It is sent to the evaporator through the valve.

In the condensers (1) and (30) of the first and second embodiments described above, the supercooling section (3) is provided below the condensing section (2), but the invention is not limited to this. A supercooling unit may be provided above the condensing unit. For example, it is provided with a condensing unit, a subcooling unit provided above the condensing unit, and a liquid receiver provided between the condensing unit and the subcooling unit, and the refrigerant flowing out from the condensing unit is It is designed to flow into the supercooling section through the liquid container, and to the liquid receiver, a refrigerant inlet into which the refrigerant flows from the condensing section, and a refrigerant which is located above the refrigerant inlet and flows into the supercooling section. A refrigerant outlet is formed, and a partition member that divides the inside of the receiver into upper and lower portions is provided at a height position between the refrigerant inlet and the refrigerant outlet in the receiver, and the partition is provided in the receiver. A first space through which the refrigerant inlet below the member communicates and a second space through which the refrigerant outlet above the partition member communicates are provided, and the first space and the second space pass through in the liquid receiver. It is also applicable to a condenser in which a suction pipe is arranged.

8 and 9 show a third embodiment of the capacitor according to the present invention. FIG. 8 specifically shows the overall configuration of the third embodiment of the capacitor according to the present invention, and FIG. 9 schematically shows the capacitor of FIG. In FIG. 9, the individual heat exchange tubes are not shown, and the corrugated fins and the side plates are also not shown.

In FIG. 8 and FIG. 9, the condenser (40) is a condenser section (2), a supercooling section (3) provided below the condenser section (2), and a condenser in a state where the longitudinal direction is oriented vertically. A liquid receiving section (41) provided between the section (2) and the supercooling section (3) and having a gas-liquid separation function is provided.

The condenser section (2) and the subcooling section (3) of the condenser (40) each have at least one heat exchange tube (5), which is a plurality of heat exchange tubes (5) arranged vertically in succession. P1) (P2) is provided, the heat exchange path (P1) provided in the condensing part (2) becomes the refrigerant condensing path, and the heat exchange path (P2) provided in the subcooling part (3) is the refrigerant It is a supercooling path. All the heat exchange tubes (5) constituting each heat exchange path (P1) (P2) have the same refrigerant flow direction, and the heat exchange tubes (5) of the two adjacent heat exchange paths are the same. The refrigerant flow direction is different. Here, the heat exchange path (P1) of the condensing part (2) is called the first heat exchange path (P1), and the heat exchange path (P2) of the supercooling part (3) is called the second heat exchange path (P2). I shall. In addition, in this embodiment, since one first heat exchange path (P1) is provided in the condensation section (2), the first heat exchange path (P1) is arranged in the refrigerant flow direction of the condensation section (2). At the same time as the heat exchange path on the most upstream side, it is also the heat exchange path on the most downstream side in the refrigerant flow direction.

A first header tank (42) to which the right ends of all the heat exchange tubes (5) constituting the first and second heat exchange paths (P1) (P2) are connected to the right end side of the condenser (40) Are arranged. The first header tank (42) is divided into two upper and lower sections by an aluminum partition member (11) provided at a height position between the first heat exchange path (P1) and the second heat exchange path (P2). Is divided into A condenser section inlet header (12) through which the upstream end of the first heat exchange path (P1) of the condenser section (2) in the refrigerant flow direction communicates with a section above the partition member (11) of the first header tank (42). ) Is also provided in the lower section, and a subcooling section outlet header (15) through which the downstream end of the second heat exchange path (P2) of the subcooling section (3) in the refrigerant flow direction is provided.

On the left end side of the condenser (40), a second header tank (where the left end of the total heat exchange pipe (5) of the first heat exchange path (P1) provided in the condenser (2) is connected by brazing ( 43) and a third header tank (44) in which the left end of the total heat exchange pipe (5) of the second heat exchange path (P2) provided in the supercooling section (3) is connected by brazing, The third header tank (44) is separately provided so as to be located outside in the left-right direction. The upper end of the third header tank (44) is higher than the lower end of the second header tank (43), and at the same height as the upper end of the second header tank (43). Further, the lower end of the third header tank (44) is located below the lower end of the second header tank (43), and is located below the second header tank (43) of the third header tank (44). The heat exchange pipe (5) that constitutes the second heat exchange path (P2) is connected to the portion to be connected by brazing. The third header tank (44) stores the liquid phase main refrigerant condensed in the condensation section (2) and also has a liquid receiving section (function as a liquid storage section for supplying the liquid phase main refrigerant to the supercooling section (3) ( Also serves as 41).

The entire second header tank (43) is provided with a condenser outlet header (13) through which the downstream end of the first heat exchange path (P1) of the condenser (2) in the refrigerant flow direction communicates. At the portion of the third header tank (44) located below the lower end of the second header tank (43), the upstream end of the second heat exchange path (P2) of the supercooling section (3) in the refrigerant flow direction is provided. A supercooling section inlet header (14) is provided to communicate with. Then, the lower end portion of the condenser header outlet header (13) of the second header tank (43) and a portion of the third header tank (44) above the supercooling portion inlet header (14) communicate with each other ( 45). The portion above the supercooling section inlet header (14) in the third header tank (44) and the supercooling section inlet header (14) communicate with each other in the third header tank (44).

The condenser (1) of the first embodiment is provided in a portion of the outer peripheral surface of the peripheral wall (12a) of the condenser inlet header (12) that is closer to one end side than the central portion (X) in the longitudinal direction, here, the portion that is closer to the lower end side. The aluminum inlet member (16) used in (1) is brazed, and the inlet member is provided in a portion of the peripheral wall (12a) of the condenser inlet header (12) that is biased to the lower end side from the central portion (X) in the longitudinal direction. The condenser (1) of the first embodiment in which the refrigerant sent out from the refrigerant inflow path (17) of (16) is caused to flow toward the central portion (X) side (upper side) in the longitudinal direction in the condenser inlet header (12). The inflow part (18) used for this is provided.

Other configurations are similar to those of the capacitor of the first embodiment.

The condenser (40) constitutes a refrigeration cycle together with a compressor, an expansion valve (pressure reducer) and an evaporator, and is installed in a vehicle as a car air conditioner.

In the condenser (40) having the above-described configuration, the high-temperature and high-pressure vapor-phase refrigerant compressed by the compressor is sent out from the refrigerant inflow passage (17) of the inlet member (16) toward the inflow portion (18). The refrigerant sent out toward the inflow part (18) is guided to the inclined part (24a) and the vertical part (24b) of the guide part (24) and also passes through the inflow port (25) to condense part inlet header (12). ) Flows toward the central portion (X) in the longitudinal direction. Therefore, a large amount of the refrigerant flows to the upper end of the condensation section inlet header (12), and the remaining refrigerant forms the guide section (24) and the heat exchange pipe (5) and the peripheral wall (12a) of the condensation section inlet header (12). Flows below the inflow portion (18) through the gaps between. As a result, the refrigerant that has flowed into the condensation section inlet header (12) through the inflow section (18) spreads throughout the condensation section inlet header (12) and is connected to the first condensation section inlet header (12). It is evenly distributed to the total heat exchange tubes (5) of the heat exchange path (P1). The refrigerant flowing into the heat exchange pipe (5) of the first heat exchange path (P1) flows leftward in the heat exchange pipe (5) of the first heat exchange path (P1) and is condensed to the outlet header (13) of the condensation section. ) Flows in. The refrigerant flowing into the condenser outlet header (13) of the second header tank (43) passes through the communication member (45) and is located above the supercooling unit inlet header (14) in the third header tank (44). Flows into the part of.

The refrigerant that has flowed into the portion above the supercooling section inlet header (14) in the third header tank (44) is a gas-liquid mixed phase refrigerant, and the liquid phase-based refrigerant of the gas-liquid mixed phase refrigerant is the first due to gravity. 3 It collects in the supercooling section inlet header (14) of the header tank (44) and enters the heat exchange pipe (5) of the second heat exchange path (P2). The refrigerant having entered the heat exchange pipe (5) of the second heat exchange path (P2) is supercooled while flowing to the right in the heat exchange pipe (5), and then is overheated in the first header tank (42). It enters the cooling section outlet header (15), flows out through the outflow section (21) and the refrigerant outflow passage (20) of the outlet member (19), and is sent to the evaporator through the expansion valve.

The capacitor according to the present invention is suitable for use in a car air conditioner mounted on an automobile.

(1)(30)(40): Capacitor
(2): Condensing part
(3): Supercooling section
(4): Liquid receiver (liquid receiving part)
(5): Heat exchange tube
(12): Condenser inlet header
(12a): Peripheral wall
(13): Condenser section outlet header
(14): Supercooling section inlet header
(15): Supercooling section outlet header
(16)(31): Entrance member
(17): Refrigerant inflow path
(18)(32): Inflow section
(24)(33): Guide part
(25): Inlet
(26): Notch
(41): Liquid receiving part
(42): First header tank
(43): Second header tank
(44): Third header tank
(45): Communication member (communication part)
(P1)(P2): Heat exchange path
(X): Central part in the longitudinal direction of the condenser inlet header

Claims (5)

Condenser inlet headers arranged with the longitudinal direction oriented in the up-down direction, and arranged in parallel with the longitudinal direction oriented in the left-right direction and at intervals in the up-down direction, and one longitudinal end is connected to the condenser inlet header. A plurality of heat exchange pipes, and a refrigerant inlet passage having open both ends at a portion of the outer peripheral surface of the peripheral wall of the condenser inlet header that is biased toward one end side from the central portion in the longitudinal direction, and the condenser inlet In the condenser where the inlet member that sends the refrigerant into the header is joined,
An inflow that causes the refrigerant sent from the refrigerant inflow passage of the inlet member to flow toward the central portion in the longitudinal direction in the condensing portion inlet header to a portion of the peripheral wall of the condensing portion inlet header that is deviated to one end side from the central portion in the longitudinal direction. Is provided on the peripheral wall of the condenser inlet header, and the inflow portion is recessed inward and the refrigerant sent from the refrigerant inflow passage of the inlet member is provided at the center in the longitudinal direction of the condenser inlet header. The guide portion that can be guided toward the side of the condensation portion, the end portion of the condensation portion inlet header in the longitudinal direction of the guide portion, and the center portion of the circumferential wall of the condensation portion inlet header in the longitudinal direction of the condensation portion inlet header rather than the guide portion. And a non-deformable portion on the side of the condenser, and an inlet formed so as to open toward the central portion side in the longitudinal direction of the condenser inlet header. A linear notch extending in the ventilation direction is formed in a portion of the peripheral wall of the condenser inlet header that is biased toward the one end side with respect to the longitudinal center, and is opposite to the longitudinal center of the condenser inlet header across the notch. The capacitor according to claim 1, wherein the guide portion and the inflow port of the inflow portion are formed by recessing the side portion inward. The condensing unit includes a supercooling unit provided below or above the condensing unit, and a liquid receiving unit provided between the condensing unit and the supercooling unit. And at least one heat exchange path composed of a plurality of heat exchange tubes arranged in parallel at intervals in the up-down direction, and the downstream end of the heat exchange path on the most downstream side in the refrigerant flow direction. A condensing part outlet header into which the refrigerant flowing through the total heat exchange path of the condensing part flows, and the condensing part inlet header is made to communicate with the refrigerant flow direction upstream side end part of the refrigerant flow direction uppermost side heat exchange path. The supercooling section has a supercooling section inlet header arranged with its longitudinal direction oriented in the vertical direction, a supercooling section outlet header arranged with its longitudinal direction oriented in the vertical direction, and its longitudinal direction oriented in the left-right direction. And at least one supercooling heat exchange path composed of a plurality of heat exchange tubes arranged in parallel at intervals in the up-down direction, and the supercooling section inlet header for supercooling on the most upstream side in the refrigerant flow direction. The upstream end of the heat exchange path in the refrigerant flow direction is communicated with, and the downstream end of the refrigerant flow direction downstream side of the supercooling heat exchange path in the refrigerant flow direction is communicated with the outlet header of the supercooling unit and receives the liquid. Part is made to communicate with the condensing part outlet header and the supercooling part inlet header, and the refrigerant flowing out from the condensing part outlet header flows into the subcooling part inlet header via the liquid receiving part. The capacitor according to 1 or 2. 4. The condenser according to claim 3, wherein the condensing section is provided with one heat exchange path, and the total heat exchange tubes of the heat exchanging path are connected to the condensing section inlet header and the condensing section outlet header. A first header tank whose longitudinal direction is oriented vertically is arranged on one end side in the longitudinal direction of the heat exchange tube, and a second header tank and a third header tank whose longitudinal direction is oriented vertically on the other end side thereof. However, the third header tank is provided outside the second header tank in the left-right direction, and the first header tank is provided with the condensation section inlet header and the supercooling section outlet header so that the former is located above. The condensing part outlet header is provided in the entire second header tank, the condensing part outlet header is connected to the total heat exchange pipe of the condensing part heat exchange path, and the lower end of the third header tank is the lower end of the second header tank. Is located below the lower header of the second header tank, and the upper end of the third header tank is located below the lower end of the second header tank. The provided inside of the condensation part outlet header of the 2nd header tank, and the part located above the lower end of the 2nd header tank in the 3rd header tank are open for free passage via a free passage part. Capacitors.

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