JP6034206B2 - Condenser - Google Patents

Description

  The present invention relates to a condenser used for an air conditioner heat exchanger or the like, which integrally includes a liquid receiver that separates the gas-liquid of the refrigerant. More specifically, the present invention relates to a brazing structure between the liquid receiver and the header.

A method is known in which a refrigerant header and a liquid receiver are integrally joined, and a refrigerant flows in and out of the two to perform gas-liquid separation of the refrigerant inside the liquid receiver. As a structure for joining the header and the liquid receiver, the thing of the following patent document 1 arrange | positions the block-shaped bracket which has a communicating hole between a liquid receiver and a header. Moreover, the thing of the following patent documents 2-4 arrange | positions the plate which has a communicating hole between a header and a liquid receiver. And as a plate, Patent Document 2 and Patent Document 3 are formed by forming the entire cross section in an M shape.
Furthermore, the one described in Patent Document 4 is formed with a curved surface that matches one end side of the plate with the outer surface of the header and the other end side with a curved surface that is opposite to the curved surface, and the curved surface is formed on the outer surface of the receiver. Aligned. And the notch is provided in the width direction between one end part and the other end part, and formation of both curved surfaces was made easy.

JP 2010-175166 A Japanese Patent No. 4726692 JP 2007-292401 A JP2003-21490

The conventional liquid receiver-integrated condenser needs to have extremely strict molding accuracy of a block or a plate interposed between the header and the liquid receiver, and its manufacture is difficult. This is because the entire one surface of the block or plate needs to be accurately aligned with the outer surface of the header, and the other outer surface needs to be a curved surface that accurately aligns with the outer periphery of the receiver. If the two outer surfaces do not exactly match, there is a possibility that the refrigerant leaks at the joint.
Accordingly, an object of the present invention is to provide a structure that can be seated stably and accurately on the outer surface of the header.

The present invention as set forth in claim 1 includes a core (3) in which a large number of fins (1) and tubes (2) are alternately arranged in the vertical direction, and is arranged at both left and right ends of the core (3). A pair of headers (4) penetrating both ends of (2), and a liquid receiver (6) fixed to one of the headers (4) via a mounting plate (5),
Refrigerant outlets (7, 8, 9) and inlets (10, 11, 12) passing through the one header (4), the mounting plate (5) and the liquid receiver (6) in the direction of the wall surface thereof , In the condenser formed in each, separated vertically
The mounting plate (5) is made of a press-formed body of a metal plate, and an intermediate holding portion (13) formed in an arc shape in which the cross section of the intermediate portion in the longitudinal direction is aligned with the outer periphery of the liquid receiver (6). And having a pair of end holding portions (14) formed at both ends in the longitudinal direction,
The end holding portion (14) has a center curved surface (14a) whose center in the width direction is formed in the same manner as the curved surface of the intermediate holding portion (13), and the header ( 4) It has a pair of legs (14b) bent at the side, and the end holding section (14) formed by the central curved surface (14a) and the pair of legs (14b) has a substantially M-shaped cross section. Formed into a shape,
A pair of refrigerant that protrudes toward the header (4) and aligns with the outer surface of the header (4) at each hole edge of the outlet (8) and the inlet (11) of the refrigerant provided in the intermediate holding portion (13). The seat (15a) is formed,
The end holding portion (14) is a contact curved surface (14c) on the inner surface of the distal end portion of the pair of leg portions (14b) when the pair of seat portions (15a) is seated on the outer surface of the header (4). Only formed to contact and align with the outer periphery of the header (4),
A pair of notch portions (16a) are formed from the both ends in the width direction toward the center at the boundary between the intermediate holding portion (13) and the end holding portion (14),
The header (4) and the liquid receiving part are seated on the pair of seats (15a) of the mounting plate (5) with the hole edges of the outlet (7) and the inlet (10) of the header (4) seated. The condenser (6) and the condenser (6) are fixed to each other via a mounting plate (5) (see the embodiment of FIGS. 9 and 10).

The present invention according to claim 2 is the condenser according to claim 1,
A burring portion (15) is formed at each hole edge of the outlet (8) and the inlet (11) of the refrigerant provided in the intermediate holding portion (13) so as to protrude toward the receiver (6), The condenser is formed such that the outer periphery of the burring portion (15) is aligned with the inner periphery of the outlet (9) and the inlet (12) of the receiver (6).

The present invention as set forth in claim 3 includes a core (3) in which a large number of fins (1) and tubes (2) are alternately arranged in the vertical direction, and arranged at the left and right ends of the core (3). A pair of headers (4) penetrating both ends of (2), and a liquid receiver (6) fixed to one of the headers (4) via a mounting plate (5),
Refrigerant outlets (7, 8, 9) and inlets (10, 11, 12) passing through the one header (4), the mounting plate (5) and the liquid receiver (6) in the direction of the wall surface thereof , In the condenser formed in each, separated vertically
The mounting plate (5) is made of a press-formed body of a metal plate, and an intermediate holding portion (13) formed in an arc shape in which the cross section of the intermediate portion in the longitudinal direction is aligned with the outer periphery of the liquid receiver (6). And having a pair of end holding portions (14) formed at both ends in the longitudinal direction,
The end holding portion (14) has a center curved surface (14a) whose center in the width direction is formed in the same manner as the curved surface of the intermediate holding portion (13), and the header ( 4) It has a pair of legs (14b) bent at the side, and the end holding section (14) formed by the central curved surface (14a) and the pair of legs (14b) has a substantially M-shaped cross section. Formed into a shape,
Further, when the end holding portion (14) is seated on the outer surface of the header (4), only the center in the width direction on the header (4) side of the central curved surface (14a), the pair of leg portions ( Only the contact curved surface (14c) of the inner surface of the tip end portion of 14b) is formed so as to be in contact with the outer periphery of the header (4),
A pair of burring portions (15) projecting in a short tube shape toward the header (4) at the hole edges of the outlet (8) and the inlet (11) of the refrigerant provided in the intermediate holding portion (13) A pair of notches (16a) are formed at the boundary between the intermediate holding portion (13) and the end holding portion (14) from both ends in the width direction toward the center,
With the pair of burring portions (15) of the mounting plate (5) being fitted into the outlet (7) and the inlet (10) of the header (4), the header (4) and the liquid receiver (6) Is a condenser characterized by being brazed and fixed to each other via a mounting plate (5) (see the embodiments of FIGS. 7 and 8).

According to a fourth aspect of the present invention, in the condenser according to any one of the first to third aspects,
A positioning convex part (16) is formed on the liquid receiver (6) side of the end holding part (14) at the center position in the width direction of the mounting plate (5), and the liquid receiver is in a position aligned therewith. This is a condenser in which a recess or a hole (17) is formed on the outer periphery of (6).

The present invention according to claim 5 is the condenser according to any one of claims 1 to 4,
The liquid receiver (6) is formed by blocking both ends of the pipe material, and the length thereof is substantially equal to that of the header (4), and the liquid receiver (6) is received at the lower end position of the liquid receiver (6). The mounting plate (5) is disposed between the liquid container (6) and the header (4),
An auxiliary mounting plate (18) is interposed between the receiver (6) and the header (4) at the upper end position of the receiver (6).
The auxiliary attachment plate (18) is a condenser having the same cross section as the end holding portion (14) of the attachment plate (5).

A sixth aspect of the present invention provides the condenser according to the fifth aspect,
At the central position in the width direction of the auxiliary mounting plate (18), a positioning convex part (19) is formed on the liquid receiver (6) side, and a concave part is formed on the outer periphery of the liquid receiver (6) at a position aligned therewith. Or it is the condenser in which the hole (20) was formed.

The condenser according to the first to third aspects of the present invention includes an intermediate holding portion 13 in which the cross section of the intermediate portion of the mounting plate 5 is formed in an arc shape matching the outer periphery of the liquid receiver 6, A pair of end holding portions 14 provided on both sides of the holding portion, and a notch 16 a is formed at the boundary between the intermediate holding portion 13 and the end holding portion 14 from both ends in the width direction toward the center. One by one is formed.
Due to the presence of the cutout portion 16a, the curved shape of the intermediate holding portion 13 and the curved surface formation of the end portion holding portion 14 are formed with high accuracy. The end holding portions 14 are disposed on both sides of the intermediate holding portion 13, the intermediate holding portions are joined to the liquid receiver 6, and the pair of end holding portions 14 are joined to the header 4. Therefore, the outer surfaces of the header 4 and the liquid receiver 6 can be stably and easily brought into contact with both sides of the mounting plate 5 with stability.
In particular, the hole edges of the outlet 7 and the inlet 10 of the header 4 are seated on the seating portion 15a of the mounting plate 5, or the burring portion 15 of the mounting plate 5 is fitted to the outlet 7 and the inlet 10 of the header 4. In such a state, these members are brazed and fixed, so that the refrigerant outlets 7, 8, 9 and the inlets 10, 11, 12 of each member are improved in liquid tightness and highly reliable condensation. There is an effect that can provide a vessel.

  Further, the end holding portion 14 is a part of the pair of leg portions 14b when seated on the seat portion 15a or when only the center in the width direction of the back surface of the central curved surface 14a is seated on the outer surface of the header 4. Since only the inner contact curved surface 14c is formed so as to align and contact the outer periphery of the header 4, the outer surface of the header 4 and the end holding portion 14 come into contact at three points. Therefore, the contact part can be seated accurately and both can be joined with high accuracy. Further, since it is sufficient to form the end holding portion 14 only with three points that are in contact with each other with accuracy, there is an effect that it is easy to form each contact portion as compared with the case where the entire surface is curved. This point is particularly different from the prior art.

As described in claim 4, when the positioning convex portion 16 is formed on the mounting plate 5 and the concave portion or hole 17 aligned therewith is formed on the outer periphery of the liquid receiver 6, each component can be more accurately secured. Therefore, it is possible to provide a more reliable condenser.
The length of the liquid receiver 6 is made equal to the header 4, the mounting plate 5 is interposed at the lower end position of the liquid receiver 6, and the liquid receiver is further inserted at the upper end position. When the auxiliary mounting plate 18 is interposed between the header 6 and the header 4, the brazing accuracy can be further improved while maintaining the balance of the entire condenser.
As described in claim 6, when the positioning projection 19 is formed on the auxiliary mounting plate 18 and the recess or hole 20 aligned therewith is provided on the outer periphery of the liquid receiver 6, each component can be more accurately Since it can be reliably assembled and brazed in that state, a more reliable condenser can be provided.

1 is a schematic front view of a condenser according to the present invention. II-II arrow line view of FIG. III-III arrow sectional drawing of FIG. FIG. 4 is a cross-sectional view taken along arrows IV-IV in FIG. 1. VV arrow sectional drawing of FIG. FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5. The principal part disassembled perspective view of the condenser of this invention. VIII-VIII arrow sectional drawing of FIG. The principal part disassembled perspective view of the condenser of 2nd Example of this invention. XX arrow sectional drawing of FIG. The principal part disassembled perspective view of the condenser of 3rd Example of this invention. FIG. 12 is a cross-sectional view taken along arrow XII-XII in FIG.

Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the condenser of the present invention has a plurality of fins 1 and tubes 2 alternately arranged in the vertical direction to form a core 3, and a pair of headers 4 are arranged on the left and right sides of the core 3, Both ends of each tube 2 penetrate through them. Each header 4 is composed of a combination of a header body having an arcuate cross section and a bowl-shaped header plate 21, and a number of flat holes are drilled in the header plate 21, and the end of the tube 2 passes therethrough. The penetrating part is liquid-tightly brazed and fixed. End lids 26 are arranged at both upper and lower ends of each header 4, and partitions 25 are arranged at two locations above and below the middle position in the longitudinal direction. The positions of the upper side partition 25 of the left header 4 and the upper side partition 25 of the right header 4 are different, and the lower side partition 25 of the left header 4 and the lower side partition 25 of the right header 4 have the same height. .

  In this example, a liquid receiver 6 made of a pipe material is integrally brazed and fixed to the right header 4 via a mounting plate 5 and an auxiliary mounting plate 18. As shown in FIG. 7, the mounting plate 5 is made of a metal plate press-molded body, and is formed in an arc shape in which the cross section of the intermediate portion in the longitudinal direction is aligned with the outer periphery of the liquid receiver 6. Have A pair of end holding portions 14 are formed at both ends in the longitudinal direction. The end holding portion 14 is formed so that the center in the width direction is the same as the curved surface of the intermediate holding portion 13, and has a central curved surface 14a there. And the both ends of the width direction have a pair of leg portions 14b bent on the header 4 side, and the central curved surface 14a and the leg portions 14b constitute an end holding portion 14, and the cross section thereof is substantially It is formed in an M shape.

The cross section of the auxiliary mounting plate 18 in FIG. 1 has the same shape as the end holding portion 14 of the mounting plate 5. The liquid receiver 6 is brazed and fixed integrally to the header 4 via the auxiliary mounting plate 18 and the mounting plate 5.
When the auxiliary mounting plate 18 and the end holding portion 14 of the mounting plate 5 are seated on the outer surface of the header 4 only at the center in the width direction on the header 4 side of the central curved surface 14a, the inner surfaces of the tip end portions of the pair of leg portions 14b. Is formed in an arc shape, and a contact curved surface 14 c is provided there, which is in contact with the outer periphery of the header 4 in alignment. As shown in FIGS. 2 and 4, the header 4, the auxiliary mounting plate 18 and the mounting plate 5 are in contact at three points on the central curved surface 14a and the leg portion 14b. And it is brazed and fixed in the contact state.

  Further, as shown in FIG. 7, the attachment plate 5 has a long hole 32 formed in the middle of the intermediate holding portion 13 in the height direction, and a pair of outlets 8 and inlets 11 provided on both upper and lower sides of the long hole 32. The cylindrical burring portion 15 is formed with short hole edges. The outer circumference of each burring portion 15 is aligned with the inner circumference of a pair of upper and lower outlets 7 and 10 formed in the header 4. Furthermore, the inner periphery of the outlet 8 and the inlet 11 is aligned with a pair of upper and lower outlets 9 and 12 formed in the liquid receiver 6 as shown in FIGS. Further, a convex portion 16 projects from the liquid receiver 6 side at the center of the central curved surface 14a of the upper end portion of the mounting plate 5. The convex portion 16 is formed by press molding (so-called half-punching process). And the hole 17 corresponding to it is drilled in the liquid receiver 6. Further, a pair of notches 16a are formed from the both ends in the width direction toward the center at the boundary between the intermediate holding portion 13 and the end holding portion 14 of the mounting plate 5, thereby bending the leg portion 14a. And keep its accuracy.

Next, FIGS. 9 and 10 show a second embodiment of the mounting plate 5. This example differs from the first embodiment of FIG. 7 in place of the short cylindrical burring portion 15 of FIG. A pair of seat portions 15 a that protrude toward the header 4 and align with the outer surface of the header 4 are formed at the edge portions of the outlet 8 and the inlet 11 of the intermediate holding portion 13. Then, when the pair of seat portions 15a is seated on the outer surface of the header 4, only the contact curved surface 14c on the inner surface of the tip end portion of the pair of leg portions 14b is aligned with and contacted with the outer periphery of the header 4. Is. Further, in this example, a convex portion 16 is provided at the center of the lower portion of the mounting plate 5 so as to protrude toward the header 4, and is fitted into the hole 17 of the header 4, whereby the header 4 and the mounting plate 5 are positioned.
11 and 12 show a third embodiment of the mounting plate 5. In this example, in addition to the mounting plate of the second embodiment, a pair of burrings are provided at the hole edges of the outlet 8 and the inlet 11. The portion 15 is provided so as to protrude on the liquid receiver 6 side. The pair of burring portions 15 are fitted into the outlet 9 and the inlet 12 of the liquid receiver 6.

  Next, the liquid receiver 6 is made of a pipe material, and the lower end portion thereof is slightly expanded as shown in FIG. 6, and the movable stopper 28 is inserted therein from below. An annular groove is formed on the outer periphery of the movable plug 28, and a seal ring 29 is attached thereto. And after inserting the movable stopper 28 in the liquid receiver 6, the retaining ring 30 is detachably attached. A fixing plug 27 is inserted from the upper end side of the liquid receiver 6. As shown in FIGS. 3 and 5, the distal end portion of the fixing plug 27 is reduced in cross section toward the distal end.

  As shown in FIG. 1, the condenser thus constructed is supplied with the refrigerant 24 from the upper inlet bracket 22 to the header 4 and between the upper partition 25 and the upper end lid 26 from the left side in the figure. The refrigerant 24 is circulated on the right side, the U-turn is made in the right header 4, the U-turn is made again in the left header 4, and it is guided to the liquid receiver 6. Then, the inside of the liquid receiver 6 is U-turned and flows out from the outlet bracket 23. At this time, the refrigerant 24 is gas-liquid separated in the liquid receiver 6.

  Here, the feature of the present invention is the shape of the mounting plate 5 and the shape of the auxiliary mounting plate 18. As shown in FIGS. 4 and 5, the liquid receiver 6 side forms a central curved surface 14a, and the contact curved surface 14c is provided on the inner surface of the pair of leg portions 14b on the header 4 side. Thereby, the mounting plate 5 comes into contact with the outer periphery of the header 4 at three points and also comes into surface contact with the outer periphery of the liquid receiver 6. Further, as shown in FIG. 7, the end holding portion 14 of the mounting plate 5 has a notch 16a formed between the intermediate holding portion 13 and the end holding portion 14, so that the center curved surface 14a and the contact curved surface 14c are formed. Molding is easy and accurate.

1 Fin 2 Tube 3 Core 4 Header 5 Mounting plate 6 Liquid receiver 7, 8, 9 Outlet
10, 11, 12 entrance
13 Intermediate holding part

14 End holder
14a Central curved surface
14b Leg
14c Contact curved surface
15 Burring
15a seat
16 Convex
16a Notch
17 holes

18 Auxiliary mounting plate
19 Convex
20 holes
21 Header plate
22 Inlet bracket
23 Exit bracket
24 Refrigerant
25 partition
25a Convex

26 End cover
27 Fixing stopper
28 Movable stopper
29 Seal ring
30 Retaining ring
31 Guide nails
32 oblong holes
33 holes

Claims (6)

A core (3) in which a large number of fins (1) and tubes (2) are alternately arranged in the vertical direction, and a pair of cores (3) that are arranged at the left and right ends of the tube (2) and through which both ends of each tube (2) penetrate. A header (4) and a liquid receiver (6) fixed to one of the headers (4) via a mounting plate (5),
Refrigerant outlets (7, 8, 9) and inlets (10, 11, 12) passing through the one header (4), the mounting plate (5) and the liquid receiver (6) in the direction of the wall surface thereof , In the condenser formed in each, separated vertically
The mounting plate (5) is made of a press-formed body of a metal plate, and an intermediate holding portion (13) formed in an arc shape in which the cross section of the intermediate portion in the longitudinal direction is aligned with the outer periphery of the liquid receiver (6). And having a pair of end holding portions (14) formed at both ends in the longitudinal direction,
The end holding portion (14) has a center curved surface (14a) whose center in the width direction is formed in the same manner as the curved surface of the intermediate holding portion (13), and the header ( 4) It has a pair of legs (14b) bent at the side, and the end holding section (14) formed by the central curved surface (14a) and the pair of legs (14b) has a substantially M-shaped cross section. Formed into a shape,
A pair of refrigerant that protrudes toward the header (4) and aligns with the outer surface of the header (4) at each hole edge of the outlet (8) and the inlet (11) of the refrigerant provided in the intermediate holding portion (13). The seat (15a) is formed,
The end holding portion (14) is a contact curved surface (14c) on the inner surface of the distal end portion of the pair of leg portions (14b) when the pair of seat portions (15a) is seated on the outer surface of the header (4). Only formed to contact and align with the outer periphery of the header (4),
A pair of notches (16a) are formed from the both ends in the width direction toward the center at the boundary between the intermediate holding portion (13) and the both end holding portions (14),
The header (4) and the liquid receiving part are seated on the pair of seats (15a) of the mounting plate (5) with the hole edges of the outlet (7) and the inlet (10) of the header (4) seated. A condenser characterized in that the vessel (6) and the fixing plate (5) are brazed and fixed to each other. The condenser of claim 1,
A burring portion (15) is formed at each hole edge of the outlet (8) and the inlet (11) of the refrigerant provided in the intermediate holding portion (13) so as to protrude toward the receiver (6), A condenser formed such that the outer periphery of the burring portion (15) is aligned with the inner periphery of the outlet (9) and the inlet (12) of the receiver (6). A core (3) in which a large number of fins (1) and tubes (2) are alternately arranged in the vertical direction, and a pair of cores (3) that are arranged at the left and right ends of the tube (2) and through which both ends of each tube (2) penetrate. A header (4) and a liquid receiver (6) fixed to one of the headers (4) via a mounting plate (5),
Refrigerant outlets (7, 8, 9) and inlets (10, 11, 12) passing through the one header (4), the mounting plate (5) and the liquid receiver (6) in the direction of the wall surface thereof , In the condenser formed in each, separated vertically
The mounting plate (5) is made of a press-formed body of a metal plate, and an intermediate holding portion (13) formed in an arc shape in which the cross section of the intermediate portion in the longitudinal direction is aligned with the outer periphery of the liquid receiver (6). And having a pair of end holding portions (14) formed at both ends in the longitudinal direction,
The end holding portion (14) has a center curved surface (14a) whose center in the width direction is formed in the same manner as the curved surface of the intermediate holding portion (13), and the header ( 4) It has a pair of legs (14b) bent at the side, and the end holding section (14) formed by the central curved surface (14a) and the pair of legs (14b) has a substantially M-shaped cross section. Formed into a shape,
Further, when the end holding portion (14) is seated on the outer surface of the header (4), only the center in the width direction on the header (4) side of the central curved surface (14a), the pair of leg portions ( Only the contact curved surface (14c) of the inner surface of the tip end portion of 14b) is formed so as to be in contact with the outer periphery of the header (4),
A pair of burring portions (15) projecting in a short tube shape toward the header (4) at the hole edges of the outlet (8) and the inlet (11) of the refrigerant provided in the intermediate holding portion (13) A pair of notch portions (16a) are formed at the boundary between the intermediate holding portion (13) and the both end holding portions (14) from both ends in the width direction toward the center,
With the pair of burring portions (15) of the mounting plate (5) being fitted into the outlet (7) and the inlet (10) of the header (4), the header (4) and the liquid receiver (6) Are condensers fixed to each other via a mounting plate (5). In the condenser in any one of Claims 1-3,
At the center position in the width direction of the mounting plate (5), a positioning convex part (16) is formed on the liquid receiver (6) side of the both-end holding part (14), and a liquid receiver ( A condenser in which a recess or a hole (17) is formed on the outer periphery of 6). In the condenser in any one of Claims 1-4,
The liquid receiver (6) is formed by blocking both ends of the pipe material, and the length thereof is substantially equal to that of the header (4), and the liquid receiver (6) is received at the lower end position of the liquid receiver (6). The mounting plate (5) is disposed between the liquid container (6) and the header (4),
An auxiliary mounting plate (18) is interposed between the receiver (6) and the header (4) at the upper end position of the receiver (6).
The condenser in which the cross section of the auxiliary mounting plate (18) is formed to be the same as the cross section of the both end holding portions (14) of the mounting plate (5). The condenser according to claim 5, wherein
At the central position in the width direction of the auxiliary mounting plate (18), a positioning convex part (19) is formed on the liquid receiver (6) side, and a concave part is formed on the outer periphery of the liquid receiver (6) at a position aligned therewith. Or a condenser with holes (20) formed.

Images