JPH11294992A - Integrally juxtaposed heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bring out the performance of both heat exchangers to the maximum by differentiating at least one of the width between tubes in the stacking direction of a first heat exchanger from that of a second heat exchanger thereby setting fins and tubes freely. SOLUTION: The interval between tubes 3 constituting a condenser 5 in the stacking direction, i.e., the so-called height FH1 of fins 4 of the condenser 5, is differentiated from the interval between tubes 7 constituting a radiator 9 in the stacking direction, i.e., the so-called height FH2 of fins 8 of the radiator 9 in order to regulate the heat exchanging capacity through the fins of the condenser 5 and the radiator 9. Furthermore, the height TH1 of the tubes 3 in the condenser 5 is differentiated from the height TH2 of the tubes 7 in the radiator 9 in the stacking direction so that the volume of fluids, i.e., refrigerant and cooling water, flowing between the tubes can be regulated by respective heat exchangers 5, 9 thus ensuring an optimal heat exchanging capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a conventional heat exchanger in which a plurality of heat exchangers are arranged one behind the other in the airflow direction, and adjacent heat exchangers are integrally connected so that respective heat exchange portions face each other. The present invention relates to an integrated heat exchanger.

[0002]

2. Description of the Related Art Japanese Utility Model Publication No. Hei 6-45155 discloses a heat exchanger including a pair of headers, a plurality of tubes communicating between the headers, and fins interposed between the tubes. A tube and a header are formed of separate members, and a fin is shared by both heat exchangers.

[0003] Japanese Patent Application Laid-Open No. 1-88163 discloses that the heat exchangers are temporarily assembled separately and then the heat exchangers are connected via separate connecting members.

[0004]

However, in a configuration in which fins are shared between adjacent heat exchangers, when a slit formed for preventing heat transfer is formed, the slit is formed to improve the heat transfer effect. If the size is increased, there is a problem that the strength of the portion where the slit is formed is reduced, and it is necessary to work so as not to deform the fin at the time of temporary assembly before brazing.

[0005] Further, in the case where the heat exchangers are separately assembled temporarily and then connected by connecting members, the fins of adjacent heat exchangers also need to face each other at a predetermined interval. Therefore, extra jigs such as spacers need to be attached at the time of assembling, and there is a concern that the number of work steps is increased and production efficiency is reduced.

[0006] From the above, the present applicant has constructed the fins of adjacent heat exchangers as separate members and joined (brazed) the adjacent fins out of phase to form a joint area between the fins. Has already been proposed to reduce the heat transfer to reduce the heat transfer (Japanese Patent Application No. 9-320388).
issue).

[0007] However, in this type of the parallel-integrated heat exchanger, the manufacturing operation can be facilitated by making the width (fin height) between the tubes in the stacking direction and the thickness of the tubes the same. Since the purpose of use and the capacity of each heat exchanger are different from each other, there is a possibility that if the capacity of one heat exchanger is matched, the capacity of the other heat exchanger is too large or too small.

Therefore, an object of the present invention is to provide a side-by-side integrated heat exchanger capable of maximizing the performance of each heat exchanger.

[0009]

Accordingly, a side-by-side integrated heat exchanger according to the present invention includes a corrugated fin,
The first and second heat exchangers each including a heat exchanging section composed of a plurality of tubes alternately stacked with the fins, and a pair of headers communicating with the plurality of tubes; The heat exchanging part of the heat exchanger and the heat exchanging part of the second heat exchanger are coupled to face each other in the same stacking direction of the tubes, and the fin of the first heat exchanger and the And the fins of the two heat exchangers are formed independently of each other, and the fins of the heat exchangers adjacent to each other between the opposing heat exchange portions are joined out of phase with each other. In the above, at least one of the width between the tubes or the thickness of the tubes in the stacking direction of the first heat exchanger is different in size from that of the second heat exchanger.

[0010] A side-by-side integrated heat exchanger according to the present invention is characterized in that a heat exchanging portion composed of corrugated fins and a plurality of tubes alternately stacked with the fins; The first and second heat exchangers each include a pair of headers that communicate with each other, and the heat exchange part of the first heat exchanger and the heat exchange part of the second heat exchanger are formed by stacking the tubes. The fins of the first heat exchanger and the fins of the second heat exchanger are connected independently in the same direction and are formed independently of each other.
And the tubes of the second heat exchanger are formed of a clad material in which the brazing material is clad, and the fins of the first and second heat exchangers are formed of a bare material in which the brazing material is not clad. In the side-by-side integrated heat exchanger, at least one of the width between the tubes or the thickness of the tubes in the stacking direction of the first heat exchanger is different in size from that of the second heat exchanger.

Therefore, in the above-described two side-by-side integrated heat exchangers, the width between the tubes, that is, the so-called fin height and the tube thickness are made different, so that the performance of each heat exchanger is matched. Since the fin height and the tube thickness can be selected, the above object can be achieved.

Similarly, the number of stacked fins and tubes in the first heat exchanger and the number of stacked fins and tubes in the second heat exchanger are different, so that the performance of each heat exchanger is matched. Since the number of stacking stages can be set, the above-mentioned problem can be achieved.

Further, the width of the fin of the first heat exchanger along the direction of the wind is formed larger than the width of the tube along the direction of the wind of the first heat exchanger, and the width of the second fin is changed. The width of the fins of the second heat exchanger along the wind direction of the vessel is formed larger than the width of the tubes of the second heat exchanger along the wind direction of the second heat exchanger, and 1
A predetermined distance is provided between the tube of the second heat exchanger and the fin of the second heat exchanger, and a predetermined distance is also provided between the tube of the second heat exchanger and the fin of the first heat exchanger. Is provided, so that it is possible to prevent the tubes from contacting each other or the tubes and the fins of another heat exchanger. Since it is possible to prevent the problem that the member formed by the erosion is eroded,
The erosion by the brazing material can be prevented.

[0014]

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

The side-by-side integrated heat exchanger 1 shown in FIGS. 1 and 2 is composed of an aluminum alloy and has two different heat exchangers, for example, a condenser 5.
And a radiator 9.

The capacitor 5 includes a pair of headers 2a,
2b, a plurality of flat tubes 3 communicating the pair of headers 2a and 2b, and fins 4 on a corrugated member inserted and joined between the tubes 3. The radiator 9 includes a pair of headers 6a. , 6b, a plurality of flat tubes 7 communicating the pair of headers 6a, 6b, and corrugated fins 8 inserted and joined between the tubes 7. The fins 4 and 8 are formed by cutting and raising the louvers 4a and 8a in order to improve the heat exchange rate of the fins 4 and 8.

As shown in FIG. 2, an extruded tube is used for the tube 3 of the condenser 5, and the headers 2a and 2b of the condenser 5 are made of a cylindrical tubular member 10.
And both ends are closed with a lid 11,
A plurality of tube insertion holes 12 into which the ends of the tubes 3 are inserted are formed in the peripheral wall of the tubular member 10. The inside of the headers 2a, 2b is provided with partition walls 15a, 15b, 15
c defines a plurality of flow chambers 10a to 10e. The most upstream flow chamber 10a communicates with the inlet 13 into which the refrigerant flows, and the most downstream flow chamber 10e allows the refrigerant to flow out. An outlet 14 is provided. As a result, the channel chamber 10a on the most upstream side through the tube 3
b, channel chamber 10c, channel chamber 10d, and channel chamber 10e
And the refrigerant is reciprocated two times. The tube 3 and the fins 7 form a heat exchange portion 5a of the condenser 5.

On the other hand, the tube 7 of the radiator 9
As shown in FIG. 2, the radiator 9 is formed of a flat tube whose interior is not partitioned, and the headers 6a and 6b of the radiator 9 are formed in a cross section having a tube insertion hole into which the end of the tube 7 is inserted. Character-shaped first header member 16
And a second header member 17 laid between the side wall portions of the header member 16 and constituting the peripheral wall of the header 6 together with the first header member 16 to form a tubular body having a rectangular cross section. The opening is closed by closing plates at both ends of the body.

One header 6b of the radiator 9 is provided with an inlet 26 through which fluid flows in, and the other header 6a is provided with an outlet 27 through which fluid flows out.
In this embodiment, the inside of both headers 6a and 6b is not partitioned, and the fluid (cooling water) entering from the inlet 26 is moved from one header 6b to the other header 6a via the entire tube 7. , And flows out from the outlet portion 27. The tube 7 and the fins 8 form a heat exchange portion 9a of the radiator 9.

In the above configuration, side plates 20 are attached to both outer sides of the tubes 3 and 7 and the fins 4 and 8 in the laminating direction, and the condenser 5 and the radiator 9 are integrally connected with the side plates 20. Things. The side plate 20 is formed of, for example, one plate shared by the heat exchangers 5 and 9, and a ventilation hole 21 is formed in a portion facing between the heat exchangers 5 and 9.
Are formed. At least one ventilation hole 21 is formed as a long hole extending in the longitudinal direction of the side plate 20, and is provided between the condenser 5 arranged on the upstream side and the radiator arranged on the downstream side at a low wind speed. To prevent the radiating action of the condenser 5 from dropping due to the relatively high temperature of the air, and to directly guide the relatively low temperature air flowing through the ventilation holes 21 to the radiator 9, thereby promoting the radiating action of the radiator 9. It is supposed to.

In the side-by-side integrated heat exchanger 1, the fins 4 of the condenser 5 and the fins 8 of the radiator 9 abut at points or lines in the ventilation direction to connect the heat exchangers 5, 9 in the ventilation direction. The fins 4 and 8 may be held in contact with each other, or the contact points or tangents of the fins 4 and 8 may be brazed. The difference is
The difference is whether the fin is formed of a bare material not clad with a brazing material or formed of a clad material clad with a brazing material, and the present invention holds in both cases. Further, when brazing the fins with their phases shifted, even if a part where the fins are in phase with each other due to manufacturing variations is part of the technical idea of the present invention.

In the side-by-side integrated heat exchanger 1 according to the first embodiment having the above-described structure, as shown in FIG. 2, the ventilation area of the condenser 5 and the ventilation area of the radiator 9 are substantially equal. Therefore, the spacing in the stacking direction between the tubes 3 forming the condenser 5, the so-called fin height FH1 of the fins 4 of the condenser 5, and the spacing in the stacking direction between the tubes 7 forming the radiator 9, the fins 8 of the radiator 9. The fin height FH2 is formed differently, and the heat exchange rates of the condenser 5 and the radiator 9 by the fins are adjusted so that the heat exchange capacity of the heat exchangers 5 and 9 is optimized. is there.

In the first embodiment,
Further, the thickness T of the condenser 5 in the stacking direction of the tubes 3 is
H1 and the thickness T of the tube 7 of the radiator 9 in the stacking direction.
H2 is formed differently, and the amount of fluid flowing between the tubes, in this case, the amounts of refrigerant and cooling water can be adjusted by each of the heat exchangers 5 and 9, so that the heat exchange capacity is optimized. Things.

Further, in the first embodiment, the length B1 of the condenser 5 in the ventilation direction of the fin 4 is formed to be longer than the length C1 of the tube 3 in the ventilation direction. The length B2 of the fin 8 in the ventilation direction is formed to be longer than the length C2 of the tube 7 in the ventilation direction.
1 and the fin 4 and the tube 7 are formed so as to have an interval A2, so that the tubes 3 and 7 do not contact each other, and the tubes 3 and 7 are connected to the fins 8 and
4 so as not to come into contact with it. As a result, the fin or tube made of a member clad with a brazing material comes into contact with the tube or fin made of a bare material with no brazing material clad, so that the tube or fin made of a bare material is included in the brazing material. It is possible to prevent erosion by components to be improved, and to improve corrosion resistance.

Further, in the side-by-side integrated heat exchanger 1b according to the second embodiment shown in FIG. 3, after the condenser 5 and the radiator 9 are temporarily assembled to each other, the tubes 3 and 7 are alternately laminated. Each of the side plates 20a and 20b holding the fins 4 and 8 from both ends in the stacking direction is temporarily assembled by bringing the flange portions 22 formed on the respective side plates 20a and 20b into contact with each other, and integrated in a furnace. It is brazed. Also in the side-by-side integrated heat exchanger 1b having this configuration, similarly to the first embodiment, the fin heights FH1 and FH2 are formed differently, and the tube thicknesses TH1 and TH2 are different. Thus, a similar effect can be obtained. Further, the fin lengths B1 and B2 are also formed so as to be longer than the tube lengths C1 and C2, and are formed so that the intervals A1 and A2 are present, as in the first embodiment. The effect of can be exhibited. In this embodiment and the embodiments described below, the same portions or portions having the same effects are denoted by the same reference numerals, and description thereof is omitted.

Further, in the side-by-side integrated heat exchanger 1c according to the third embodiment shown in FIG. 4, the length of the tube 3 of the condenser 5 in the longitudinal direction is longer than the length of the tube 7 of the radiator 9. In this case, the ventilation area of the condenser 5 is made smaller than that of the radiator 9. Thus, by adding this configuration to the above-described configuration, an optimum ventilation area for the condenser 5 and the radiator 9 can be obtained, so that the performance of each heat exchanger can be maximized.

In the side-by-side integrated heat exchanger 1d according to the fourth embodiment shown in FIGS. 5 and 6, the length of the condenser 5 in the stacking direction is reduced to adjust the ventilation area. Things. In this embodiment, the upper end in the stacking direction of the side-by-side integrated heat exchanger 1d is
0, but the lower end of the heat exchanger 1d is
The side plate 20c that holds the lower end of the capacitor 5 in the stacking direction and the side plate 20d that holds the lower end of the radiator 9 in the stacking direction are held and fixed via a connecting member 20e. Also in the side-by-side integrated heat exchanger 1d according to this embodiment, similarly to the above-described embodiment, the fin heights FH1 and FH2 are formed to be different, and the tube thicknesses TH1 and TH2 are further reduced. Since they are formed differently, similar effects can be obtained. Further, the fin lengths B1 and B2 are also formed so as to be longer than the tube lengths C1 and C2, and are formed so that the intervals A1 and A2 are present, as in the first embodiment. The effect of can be exhibited.

Further, a side-by-side integrated heat exchanger 1e according to the fifth embodiment shown in FIG. After attaching, alternately stacked tubes 3,
7 and the fins 4 and 8 at the upper end in the stacking direction, and the side plates 20a and 20b are
a, 20b are brought into contact with each other, and the lower end of the side plate 2
0c and 20d are connected and fixed via a connecting member 20e, temporarily assembled, and integrally brazed in a furnace. In the side-by-side integrated heat exchanger 1b having this configuration,
As in the above embodiment, each fin height FH
1, the FH2 is formed differently, and the tube thicknesses TH1 and TH2 are formed differently, so that the same effect can be obtained. Further, the fin lengths B1 and B2 are formed longer than the tube lengths C1 and C2, as in the first embodiment.
Since it is formed such that A2 exists, the same effect as described above can be obtained.

[0029]

As described above, according to the present invention, in the two heat exchangers constituting the side-by-side integrated heat exchanger, the distance between the tubes in the stacking direction, that is, the so-called fin height and tube thickness, is reduced. Since at least one of the heat exchangers is made different, the fins and tubes can be set freely, so that a configuration that can maximize the performance of both heat exchangers can be obtained. Further, since contact between the tubes and contact between the tubes and the fins of the other heat exchangers can be avoided, erosion by the brazing material can be prevented, so that the corrosion resistance can be improved.

[Brief description of the drawings]

FIG. 1A is a front view showing an overall configuration of a side-by-side integrated heat exchanger according to a first embodiment of the present invention,
(B) is a plan view thereof.

FIG. 2 is a partially enlarged sectional view showing the configuration of fins and tubes of the side-by-side integrated heat exchanger according to the first embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view showing a configuration of fins and tubes of a side-by-side integrated heat exchanger according to a second embodiment of the present invention.

FIG. 4 is a front view showing an overall configuration of a side-by-side integrated heat exchanger according to a third embodiment of the present invention.

FIG. 5 (a) is a front view showing the overall configuration of a side-by-side integrated heat exchanger according to a fourth embodiment of the present invention,
(B) is a plan view thereof.

FIG. 6 is a partially enlarged cross-sectional view showing a configuration of fins and tubes of a side-by-side integrated heat exchanger according to a fourth embodiment of the present invention.

FIG. 7 is a partially enlarged cross-sectional view showing a configuration of fins and tubes of a side-by-side integrated heat exchanger according to a fifth embodiment of the present invention.

[Explanation of symbols]

 1, 1b, 1c, 1d, 1e Side-by-side integrated heat exchanger 3, 7 Tube 4, 8 Fin 5 First heat exchanger (condenser) 9 Second heat exchanger (radiator)

Claims (5)

[Claims] 1. A first and a first heat exchanger comprising a corrugated fin, a heat exchanging section composed of a plurality of tubes alternately stacked with the fin, and a pair of headers communicating with the plurality of tubes. The heat exchanger of the first heat exchanger and the heat exchanger of the second heat exchanger are coupled to face each other in the same stacking direction of the tubes, The fins of the first heat exchanger and the fins of the second heat exchanger are formed independently of each other, and the fins of the heat exchangers adjacent to each other between the opposing heat exchangers are out of phase. In the side-by-side integrated heat exchanger, at least one of the width between the tubes or the thickness of the tubes in the stacking direction of the first heat exchanger is different in size from that of the second heat exchanger. Side-by-side integrated heat exchange characterized by . 2. A heat exchanger comprising a corrugated fin, a plurality of tubes alternately stacked with the fin, and a pair of headers communicating with the plurality of tubes. The heat exchanger of the first heat exchanger and the heat exchanger of the second heat exchanger are coupled to face each other in the same stacking direction of the tubes, The fins of the first heat exchanger and the fins of the second heat exchanger are formed independently of each other, and the tubes of the first and second heat exchangers are made of a clad material clad with brazing material. And the fins of the first and second heat exchangers are side-by-side integrated heat exchangers formed of a bare material on which the brazing material is not clad, in the stacking direction of the first heat exchanger. Width between tubes or tube thickness At least one of, juxtaposition integrated heat exchanger therewith dimension of the second heat exchanger are different from each other. 3. The fins and tubes of the first heat exchanger and the fins and tubes of the second heat exchanger are different in the number of stacked layers or in the direction of stacking. Built-in heat exchanger. 4. The tube according to claim 1, wherein the length of the tube of the first heat exchanger in the longitudinal direction is different from the length of the tube of the second heat exchanger in the longitudinal direction. Side-by-side integrated heat exchanger. 5. The width of the fin of the first heat exchanger along the direction of the wind is formed to be larger than the width of the tube along the direction of the wind of the first heat exchanger, and the second heat exchange is performed. The width of the fin of the second heat exchanger along the wind direction of the vessel is
The width of the tube of the second heat exchanger along the wind direction of the second heat exchanger is larger than the width of the tube of the first heat exchanger and the fin of the second heat exchanger. A predetermined interval is provided between the fins of the second heat exchanger and the fins of the first heat exchanger. The side-by-side integrated heat exchanger according to one of the above.