JP5664063B2 - Condenser - Google Patents

Description

  The present invention relates to a condenser having a modulator tank having a liquid storage function.

  A modulator tank provided in a conventionally well-known condenser is provided in a form to be joined to a side portion of one header tank connected to end portions of a plurality of tubes. That is, the modulator tank is provided in a vertically long shape at the side end portion of the condenser so as to follow a header tank arranged with the vertical direction as a longitudinal direction (hereinafter referred to as a vertically placed modulator tank).

  In recent years, there has been a demand in the market for a thin condenser having a small mounting space while maintaining the performance of a conventional condenser. In response to this requirement, even if the thickness of the core portion can be reduced, it is necessary to secure the volume of the modulator tank in order to ensure the performance of the condenser. And, in the case of a conventional vertically placed modulator tank, the tank diameter cannot be reduced from the viewpoint of securing the volume, and the thickness in the front-rear direction of the modulator tank increases with respect to the thickness of the core part and the header tank. There is a problem that a dead space is generated around the core portion, and the entire condenser cannot be thinned.

  As a technique that can solve such a problem, a condenser of Patent Document 1 is known. The condenser disclosed in Patent Document 1 is a horizontally placed tank provided in a posture of being laid sideways along the core portion at the upper end portion of the core portion, in addition to the vertical modulator tank provided at the side end portion of the condenser. It has a modulator tank. The vertical modulator tank and the horizontal modulator tank are connected by a connecting pipe, and the interiors of both tanks are in communication. The horizontally placed modulator tank is disposed on side plates provided at both upper and lower ends of the core portion to reinforce the core portion, and is fixed to the side plate by fasteners.

Korean Published Patent No. 10-0795551

  However, since the horizontal modulator tank in the condenser of Patent Document 1 is fixed to the side plate at the upper end of the core portion via a stopper, there is a problem that the number of parts and the number of manufacturing steps are required.

  Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a condenser capable of reducing the thickness and the number of parts while ensuring the charging characteristics of the refrigerant.

  The present invention employs the following technical means to achieve the above object. In addition, the code | symbol in the parenthesis as described in a claim and each following means shows the correspondence with the specific means described in embodiment as one aspect.

The invention according to claim 1 includes a plurality of tubes (3) in which a refrigerant passage through which a refrigerant flows is formed, and a plurality of outer layers that are joined to the outer surface of the tubes and stacked alternately with the tubes. A header tank (2) that includes fins (4), and a header tank that communicates with the inside of the plurality of tubes by connecting ends of the tubes in the longitudinal direction (X) of the plurality of tubes that form the core portion. 6) and a first tank that communicates with the inside of the header tank so that refrigerant from the header tank can flow in, and is provided along the side of the header tank in the tube longitudinal direction (X), and has a function of storing liquid refrigerant. The second modulator tank that communicates with the interior of the first modulator tank and that is provided along the side of the core portion in the tube stacking direction (Z). With click and (12), a
The second modulator tank is provided above the core portion (2) and is joined to an outer fin disposed at an end portion of the core portion in the tube stacking direction among the plurality of outer fins. To do.

  According to this invention, in addition to the first modulator tank provided on the side portion of the header tank, the second modulator tank provided on the side portion of the core portion in the tube stacking direction is provided, thereby increasing the tank diameter of the modulator tank. Even if the structure which does not do is adopted, the condenser which ensures the volume required as a modulator is obtained. Moreover, since the tank diameter can be suppressed, the size of the condenser can be suppressed, the dead space around the condenser can be reduced, and the mountability of the condenser can be improved. Furthermore, since the second modulator tank functions as a reinforcing member due to the structure in which the second modulator tank is joined to the outer fin, the function of the conventional side plate and the like is also ensured and the rigidity of the condenser is secured. Can be abolished. Therefore, it is possible to provide a condenser capable of reducing the thickness and the number of parts while ensuring the refrigerant charging characteristics.

According to invention of Claim 2, a 2nd modulator tank is joined to the outer fin arrange | positioned at the edge part of the tube lamination direction in a core part among several outer fins,
Furthermore, the relay tank (9) which communicates with the inside of the second modulator tank by disposing the opening end (122) of the cylindrical body constituting the second modulator tank (12) inside the header tank (6 ) In the upper part,
A through hole (201) is formed, and includes a communication plate (20) interposed between the relay tank and the first modulator tank (11).
In the first modulator tank, a refrigerant outlet (112) is formed in a wall portion facing the relay tank, and in the relay tank, a refrigerant inlet (91) is formed at a position facing the refrigerant outlet (112).
The communication plate is arranged between the relay tank and the first modulator tank so as to connect the refrigerant inlet (91), the through hole (201), and the refrigerant outlet (112).

  According to the present invention, the header tank, the relay tank, and the first modulator tank are directly joined by connecting the relay tank and the first modulator tank so as to communicate with each other through the communication plate. Even if it does not take, since it can comprise so that both can communicate, the amount of heat transmission between both can be suppressed and the performance fall of a condenser can be suppressed. Furthermore, since both are connected by a plate material called a communication plate, the heat loss when the refrigerant passes through the communication plate can be reduced as compared with the case of duct connection, which contributes to securing the performance of the condenser.

According to invention of Claim 3, a 2nd modulator tank is joined to the outer fin arrange | positioned in the edge part of the tube lamination direction in a core part among several outer fins,
The cylindrical body constituting the second modulator tank (12A) passes through the header tank (6A), and the open end (122) of the cylindrical body is located inside the first modulator tank (11A). The inside of the first modulator tank and the inside of the second modulator tank communicate with each other so that the refrigerant can flow from the inside of the first modulator tank to the inside of the second modulator tank. .

  According to the present invention, by extending the second modulator tank, which is a cylindrical body, to the inside of the first modulator tank, the inside of the first modulator tank and the first modulator tank can be reduced in number of parts and with a simple configuration. A communication path with the inside of the second modulator tank can be realized.

According to invention of Claim 4, a 2nd modulator tank is joined to the outer fin arrange | positioned in the edge part of the tube lamination direction in a core part among several outer fins,
Furthermore, a cylindrical connecting member (22) connected to the second modulator tank (12B) is provided,
The connecting member passes through the header tank (6B) and is provided so that the open end (221) of the connecting member is located inside the first modulator tank (11B).
The inside of the first modulator tank and the inside of the second modulator tank communicate with each other via a connecting member so that the refrigerant can flow from the inside of the first modulator tank to the inside of the second modulator tank. To do.

  According to the present invention, by extending the cylindrical connecting member connected to the second modulator tank to the inside of the first modulator tank, the second modulator tank whose outer diameter can be increased is provided in the first modulator tank. Since extending to the inside of one modulator tank can be avoided, the brazing joint area can be reduced. Further, a communication path between the inside of the first modulator tank and the inside of the second modulator tank can be realized with a small number of parts and a simple configuration.

According to invention of Claim 5, a 2nd modulator tank is joined to the outer fin arrange | positioned at the edge part of the tube lamination direction in a core part among several outer fins,
An opening end portion (122) of a cylindrical body constituting the second modulator tank (12) is arranged inside the header tank (6C), and the inside of the second modulator tank and the inside of the header tank are communicated with each other. ,
The first modulator tank (11) has a refrigerant outlet (112) formed on the wall facing the header tank, and the header tank has a refrigerant inlet (68) formed at a position facing the refrigerant outlet.
The first modulator tank and the header tank are integrally provided so as to connect the refrigerant inlet (68) and the refrigerant outlet (112).

  According to this invention, in the condenser in which the condensing part forms a so-called all-pass refrigerant flow, the opening end of the second modulator tank, which is a cylindrical body, is disposed inside the header tank, and the first modulator tank By connecting each opening to communicate the inside of the header tank and the inside of the header tank, a communication path between the inside of the first modulator tank and the inside of the second modulator tank is realized with a small number of parts and a simple configuration. be able to.

According to invention of Claim 6, a 2nd modulator tank is joined to the outer fin arrange | positioned at the edge part of the tube lamination direction in a core part among several outer fins,
The header tank (6D) and the first modulator tank (11C) are separate members formed by extrusion molding.
The first modulator tank is formed including a cylindrical portion through which a refrigerant flows and a flat side plate portion (113) provided on a side portion of the cylindrical portion on the header tank side,
A refrigerant outlet (112) is formed through the side plate portion, and a refrigerant inlet (68) is formed in the header tank at a position facing the refrigerant outlet (112).
A through hole (201) is formed, and includes a communication member (20A) interposed between the header tank and the first modulator tank,
The communication member includes claw-shaped hanging portions (202, 203), and the header tank and the first modulator tank are connected to connect the refrigerant inlet (68), the through hole (201), and the refrigerant outlet (112). The header tank and the first modulator tank are fixed by a latching portion.

  According to this invention, the second header tank and the first modulator tank can be connected so that the refrigerant can communicate with the communication member, so that a communication path between the two tanks is formed without directly adhering the two tanks. be able to. Therefore, transfer of heat between the second header tank and the first modulator tank can be suppressed, which contributes to improvement in heat exchange performance. In addition, since the second header tank and the first modulator tank can be temporarily fixed by adopting the hooking portion and then brazed and joined, the communication path between the two tanks can be reliably formed.

According to invention of Claim 7, a 2nd modulator tank is joined to the outer fin arrange | positioned in the edge part of the tube lamination direction in a core part among several outer fins,
The header tank (6E) and the first modulator tank (11D) are a common member formed integrally by extrusion molding.
A communication plate (20B) in which a through hole (201) is formed;
By attaching the communication plate to the common member, the inside of the header tank and the inside of the first modulator tank communicate with each other through a through hole.

  According to this invention, since the second header tank and the first modulator tank are provided as a common member by extrusion molding, a reduction in the number of parts, a reduction in parts management man-hours, and a reduction in management man-hours for brazing joining can be expected. Manufacturing cost can be reduced. In addition, by attaching a communication plate in which a through hole is formed to a common member to form a communication path, the second header tank and the first modulator tank can be joined to each other without going through a step. A condenser that reliably forms a communication path can be provided.

  In the invention according to claim 8, in the second modulator tank (12C), the base portion (124C) in which the joining portion with the outer fin (4) is flat, and the refrigerant from the first modulator tank circulates. And is formed by extrusion molding.

  According to the present invention, the contact area between the second modulator tank and the outer fin 4 can be made as large as possible by having the base portion 124C in which the joint portion with the outer fin is flat, and the brazed joint area can be secured. I can plan. Moreover, the force transmitted from the core part side can be dispersed by the stable base part against vibrations acting on the condenser. Therefore, the reinforcing function of the second modulator tank with respect to the core portion can be improved.

  The invention according to claim 9 is characterized in that the second modulator tank (12D) is formed by integrally laminating a plurality of the same tubes as the tubes (3) constituting the core portion. According to the present invention, since the tube employed in the core portion is used as a member constituting the second modulator tank, the sharing of components has progressed, the number of components can be reduced, the number of component management steps can be reduced, and the manufacturing cost can be reduced. Reduction can be achieved.

  The invention according to claim 10 is characterized in that the second modulator tank (12E, 12F, 12G) is formed by combining a plurality of members formed by pressing. According to the present invention, by performing the easy processing method, a high contact area can be obtained on the joint surface with the outer fin in the second modulator tank, and the manufacturing cost can be reduced.

It is the perspective view which showed the condenser of 1st Embodiment to which this invention is applied. In the condenser of 1st Embodiment, it is the fragmentary sectional view which showed a 2nd modulator tank and a part of core part. It is the schematic diagram which showed the path | route of the refrigerant | coolant flow in the condenser of 1st Embodiment. In the condenser of a 1st embodiment, it is a fragmentary sectional view for explaining the composition about the path through which a refrigerant flows from the 1st modulator tank to the 2nd modulator tank. It is a schematic diagram explaining the difference in the magnitude | size of a modulator tank about the condenser of 1st Embodiment, and the conventional condenser. It is the graph which showed the experimental result of the filling characteristic of the refrigerant | coolant performed about the condenser of 1st Embodiment, and the conventional condenser. In the condenser of 2nd Embodiment to which this invention is applied, it is a fragmentary sectional view for demonstrating the structure regarding the path | route through which a refrigerant | coolant flows from a 1st modulator tank to a 2nd modulator tank. In the condenser of 3rd Embodiment to which this invention is applied, it is a fragmentary sectional view for demonstrating the structure regarding the path | route through which a refrigerant | coolant flows from a 1st modulator tank to a 2nd modulator tank. In the condenser of 4th Embodiment to which this invention is applied, it is a fragmentary sectional view for demonstrating the structure regarding the path | route through which a refrigerant | coolant flows from a 1st modulator tank to a 2nd modulator tank. In the condenser of 5th Embodiment to which this invention is applied, it is the fragmentary sectional view which showed a part of 2nd modulator tank and core part. In the condenser of 6th Embodiment to which this invention is applied, it is the fragmentary sectional view which showed a 2nd modulator tank and a part of core part. In the condenser of 7th Embodiment to which this invention is applied, it is the fragmentary sectional view which showed a 2nd modulator tank and a part of core part. It is a fragmentary sectional view showing the 1st modification concerning the 2nd modulator tank of a 7th embodiment. It is a fragmentary sectional view showing the 2nd modification concerning the 2nd modulator tank of a 7th embodiment. In the condenser of 8th Embodiment to which this invention is applied, it is a fragmentary sectional view for demonstrating the structure regarding a 1st modulator tank and a 2nd header tank. In the condenser of 9th Embodiment to which this invention is applied, it is a fragmentary sectional view for demonstrating the structure regarding a 1st modulator tank and a 2nd header tank. In the condenser of 9th Embodiment, it is a fragmentary sectional view for demonstrating the structure regarding the path | route through which a refrigerant | coolant flows from a 1st modulator tank to a 2nd header tank.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. In addition to combinations of parts that clearly indicate that each embodiment can be combined specifically, the embodiments may be partially combined even if they are not clearly specified, unless there is a problem with the combination. Is possible.

(First embodiment)
The condenser 1 of the first embodiment has a condensing part 2a and a subcooling part 2b (supercooling part) in a core part 2 formed by laminating tubes 3 through which a refrigerant flows, and for retaining the refrigerant in the refrigeration cycle. , It has a refrigerant reservoir function. Such a condenser 1 will be described with reference to FIGS. FIG. 1 is a perspective view showing the configuration of the condenser 1 of the first embodiment. FIG. 2 is a partial cross-sectional view showing a part of the second modulator tank 12 and the core portion 2 in the condenser 1. FIG. 3 is a schematic diagram showing a refrigerant flow path in the condenser 1.

  As shown in FIG. 1, the condenser 1 is a refrigerant condenser integrated with a modulator tank applied to a refrigeration cycle used in a vehicle air conditioner. The condenser 1 includes a condensing unit 2a that cools the refrigerant discharged from a compressor (not shown) of the refrigeration cycle and condenses the gas-phase refrigerant, and converts the refrigerant flowing out of the condensing unit 2a into a gas-phase refrigerant and a liquid-phase refrigerant. The surplus refrigerant in the refrigeration cycle is stored as a liquid phase refrigerant and the modulator tank 10 that flows out the liquid phase refrigerant, and the subcool section that cools the liquid phase refrigerant that flows out from the modulator tank 10 and increases the degree of supercooling of the refrigerant 2b, which are integrally formed. The modulator tank 10 of the present embodiment has an L-shaped cylindrical body, the internal space communicates with each other, and the first modulator tank 11 disposed at the lateral end portion of the condenser 1 and the upper end portion. The second modulator tank 12 is made up of.

  The condenser 1 has a cylindrical first header tank 5 and second header tank 6 which are a pair of header tanks arranged at a predetermined interval. Between the 1st header tank 5 and the 2nd header tank 6, the core part 2 for heat exchange is arrange | positioned, and the core part 2 contains the condensation part 2a and the subcool part 2b. The condenser 1 is a so-called multiflow type in which the refrigerant flowing into the first header tank 5 is divided into a plurality of refrigerant passages and flows toward the second header tank 6.

  As shown in FIG. 2, the core portion 2 is provided with a plurality of laminated tubes 3 having a flat cross section that allows the refrigerant to flow in the horizontal direction between the first header tank 5 and the second header tank 6. Between them, a corrugated outer fin 4 is interposed and brazed to each other. One end of the tube 3 in the tube longitudinal direction X is arranged to communicate with the first header tank 5, and the other end is arranged to communicate with the second header tank 6. Each tube 3 constituting the core portion 2 is a multi-hole tube having a plurality of small passages 31 therein. Such a multi-hole tube can be formed by extrusion. In addition, D shown in FIG. 2 represents the thickness dimension of the core part 2.

  A refrigerant inlet-side piping joint 7 is disposed on the upper end side of the first header tank 5, and a refrigerant outlet-side piping joint 8 is disposed on the lower end side, and each is joined to the first header tank 5.

  As shown in FIG. 3, two separators 51 and 52 that partition the inner space vertically are arranged inside the first header tank 5, and two separators are similarly arranged inside the second header tank 6. 61 and 62 are arranged. With these separators, the interiors of the first header tank 5 and the second header tank 6 are each partitioned into three spaces in the vertical direction. For this reason, the core part 2 has four flow path groups arranged in the vertical direction, of which the condensing part 2a constitutes three flow path groups arranged in the vertical direction, and the subcool part 2b is formed by the lowest flow path group. Composed.

  Furthermore, in the condenser 1 of the present embodiment, a communication path 66 is provided between the internal space 64 located second above the second header tank 6 and the internal space 111 of the first modulator tank 11. It communicates with. The internal space 65 located at the lowest position of the second header tank 6 and the internal space 111 of the first modulator tank 11 communicate with each other by providing a communication path 67.

  Accordingly, the refrigerant flowing in from the inlet side pipe joint 7 is located in the uppermost space of the first header tank 5, the flow path group located in the uppermost position of the condensing part 2 a, and the uppermost position of the second header tank 6. An internal space 63, a flow path group located second above the condensing part 2a, an internal space located second highest above the first header tank 5, a flow path group located lowest in the condensing part 2a, 2 The internal space 64 positioned second above the header tank 6, the internal space 111 of the first modulator tank 11, the internal space 65 positioned at the lowest position of the second header tank 6, and the flow path constituting the subcool portion 2 b After flowing through the group, the inner space located at the lowermost position of the first header tank 5 and the second header tank 6 in this order, it flows out from the outlet side pipe joint 8 to the outside. For this reason, the refrigerant forms a flow that reciprocates once in the condensation portion 2a (a flow that crosses the condensation portion 2a three times).

  A cylindrical first modulator tank 11 that separates the gas-liquid refrigerant and stores the liquid refrigerant is integrally provided outside the second header tank 6. The first modulator tank 11 and the second header tank 6 are in a relationship in which their internal spaces communicate with each other through the communication path 66 and the communication path 67. The condensing part 2a, the subcooling part 2b, and each part of the first modulator tank 11 are formed of aluminum material or aluminum alloy material by press working, extrusion molding or the like, and are assembled by integral brazing, for example, in-furnace brazing.

  Furthermore, the condenser 1 communicates with the inside of the first modulator tank 11 and is arranged at the uppermost part of the core part 2 so as to be along the side part (upper end part) of the core part 2 in the tube stacking direction Z. The modulator tank 12 is provided. The first modulator tank 11 and the second modulator tank 12 contain a desiccant that absorbs moisture in the refrigeration cycle and a filter that collects foreign matter in the refrigeration cycle. The second modulator tank 12 is, for example, a cylindrical body having a rectangular cross section, and includes a flat portion 124 where at least a joint portion with the outer fin 4 located at the uppermost portion of the core portion 2 is flat.

  The second modulator tank 12 has a length over the entire lateral direction of the core portion 2, and both end portions are connected to the relay tank 9 disposed on the upper portion of the second header tank 6 and the upper portion of the first header tank 5. Has been. The second modulator tank 12 is connected to the upper portion of the first header tank 5, but the internal space 121 of the second modulator tank 12 and the internal space of the first header tank 5 are separated by a partition member 21 or the like. It is configured not to communicate. With such a configuration, since both ends of the second modulator tank 12 are supported by other members, the core unit 2 maintains a desired strength against vibration and the like, and the actual use time has elapsed. Can exert a reinforcing function. The internal space of the first header tank 5 to which the second modulator tank 12 is connected has a modulator function together with the internal space of the second modulator tank 12.

  The outer fin 4 and the second modulator tank 12 positioned at the uppermost part of the condensing part 2a are formed by press working, extrusion molding or the like with an aluminum material or an aluminum alloy material, and are integrally brazed, for example, in a furnace Be joined. Thereby, the 2nd modulator tank 12 exhibits the function which supports the outer fin 4 located in the uppermost part from the upper part, protects the core part 2 from a vibration and the deformation | transformation by a heat | fever, and reinforces the core part 2. FIG.

  FIG. 4 is a partial cross-sectional view for explaining a configuration relating to a path through which the refrigerant flows from the first modulator tank 11 to the second modulator tank 12. As shown in FIG. 4, the condenser 1 includes a relay tank 9 that functions as a member that allows the second modulator tank 12 and the first modulator tank 11 to communicate with each other. The relay tank 9 is integrally provided on the upper part of the second header tank 6 and has an open end 122 of the second modulator tank 12 that is a cylindrical body disposed therein. As a result, the internal space 121 communicating with the internal space 121 of the second modulator tank 12 communicates.

  Further, a communication plate 20 is interposed between the first modulator tank 11 and the relay tank 9. A through hole 201 is formed in the communication plate 20. In the first modulator tank 11, a refrigerant outlet 112 is formed in a wall portion facing the relay tank 9. A coolant inlet 91 is formed in the relay tank 9 at a position facing the coolant outlet 112 of the first modulator tank 11. The communication plate 20 is disposed between the relay tank 9 and the first modulator tank 11, thereby fulfilling a function of connecting the refrigerant inlet 91, the through hole 201, and the refrigerant outlet 112. In order to form a gap equivalent to the thickness of the communication plate 20 between the modulator tanks 11, a heat insulating air layer is formed between the two tanks so as to suppress the transfer of heat between the two tanks.

  The first modulator tank 11, the second header tank 6, the relay tank 9, the communication plate 20, and the first modulator tank 11 are formed of an aluminum material or an aluminum alloy material, and are integrally brazed, for example, in a furnace Joined by brazing.

  The refrigerant discharged from the compressor of the refrigeration cycle flows from the inlet side pipe joint 7 into the uppermost space in the first header tank 5 and then flows through the uppermost flow path group of the condensing part 2a to the second header tank. 6 flows into the inner space 63 at the uppermost portion of the condenser 6, and further flows in the order of the flow path group in the middle of the condensing part 2a, the middle space in the first header tank 5, and the lowermost flow path group in the condensing part 2a. 2 flows into the inner space 64 in the middle of the header tank 6. Then, the refrigerant passes through the communication path 66 from the middle inner space 64 of the second header tank 6 and flows into the inner space 111 of the first modulator tank 11. It flows to the outside through the lower internal space 65, the subcool portion 2b, the lowermost space in the first header tank 5 and the outlet side pipe joint 8. In addition, since the refrigerant that has flowed into the internal space 111 of the first modulator tank 11 can also flow into the internal space 121 of the second modulator tank 12, the volume of the modulator can be increased and the refrigerant filling property of the condenser can be improved. Can be achieved.

  FIG. 5 is a schematic diagram illustrating the difference in the size of the modulator tank between the condenser 1 and the conventional condenser. FIG. 6 is a graph showing experimental results of refrigerant charging characteristics performed for the condenser 1 and the conventional condenser.

  As shown in FIG. 5, in the case of a conventional condenser, the modulator tank 50 has a tank diameter dimension of a second header in order to secure a necessary tank volume because it is necessary to secure a predetermined amount of refrigerant in the refrigeration cycle. It becomes larger with respect to the tank 6. For this reason, when one end part of the external fluid circulation direction Y is matched with respect to both tanks, the modulator tank 50 protrudes about the dimension B shown in FIG. 5 on the other end side. In the case of a conventional condenser, the length dimension in the tube longitudinal direction X is increased by about dimension A shown in FIG.

  However, in the case of the condenser 1, since the tank volume of the modulator can be secured by the second modulator tank 12 in addition to the first modulator tank 11, the tank diameter of the first modulator tank 11 can be kept small. It is. Therefore, the tank diameter dimension of the first modulator tank 11 can be brought close to the thickness dimension of the core portion 2 and the tank diameter dimension of the second header tank 6. In the configuration of the present embodiment, the physique of the condenser 1 is made the core. It is possible to reduce the size in both the thickness direction (circulation direction Y of the external fluid) and the core width direction (tube longitudinal direction X).

  Next, the inventors experimentally operated the refrigeration cycle under predetermined conditions for each of the conventional condenser and the condenser 1 of the present embodiment, and verified the change in the subcooling degree with respect to the change in the refrigerant charge amount of the cycle. The results will be described. The condenser used in the experiment conventionally has a core part of the same size in both of the embodiments, and the core part has a horizontal width direction (tube longitudinal direction X) dimension of 600 mm and a vertical width direction (tube lamination direction Z) dimension of 400 mm. It has been found that the same result can be obtained even when the widthwise dimension is in the range of 600 to 700 mm and the widthwise dimension is in the range of 300 to 500 mm. Further, the volume of the vertically placed modulator tank in the conventional condenser and the total volume of the first and second modulator tanks in the condenser 1 of the present embodiment are set to be equal.

  As shown in FIG. 6, when the refrigerant charge amount in the cycle is increased, both condensers reach a stable range where the subcooling is stabilized at about 9 ° C. in the refrigerant charge amount range of 480 g to 640 g. In this way, the condenser 1 has a refrigerant charging characteristic comparable to that of a conventional condenser and ensures equivalent performance despite the fact that the tank diameter is reduced by the structure of the modulator tank divided into two. I confirmed that I can do it.

  Next, the effect which the condenser 1 of this embodiment brings is demonstrated. The condenser 1 includes a first header tank 5 into which refrigerant flows in and out of the outside, a core portion 2 configured by alternately stacking tubes 3 and outer fins 4, a first modulator tank 11, A second modulator tank 12 that communicates with the inside of the first modulator tank 11 and is provided along the side of the core portion 2 in the tube stacking direction Z. The first modulator tank 11 communicates with the inside of the second header tank 6 so that the refrigerant from the second header tank 6 can flow in, and is provided along the side of the second header tank 6 in the tube longitudinal direction X. It is done. The second modulator tank 12 is joined to the outer fin 4 disposed at the end of the core portion 2 in the tube stacking direction Z.

  According to this configuration, in addition to the first modulator tank 11 provided on the side portion of the second header tank 6, the second modulator tank 12 provided on the side portion of the core portion 2 in the tube stacking direction Z is provided. Even if a structure that suppresses the tank diameter of each modulator tank is employed, the volume necessary for the modulator can be secured. That is, the required volume can be shared by both tanks. Since the tank diameter can be suppressed in this way, it is possible to suppress the size of the condenser in the thickness direction and the width direction, reduce the dead space around the condenser, and improve the mountability of the condenser. This is particularly useful in a condenser mounted in a vehicle engine room or the like.

  Furthermore, since the second modulator tank 12 functions as a reinforcing member due to the configuration in which the second modulator tank 12 is joined to the outer fin 4, it can also function as a conventional side plate or the like. Thereby, while being able to maintain and improve the rigidity of the condenser 1, it is also possible to abolish the side plate and to prevent an increase in the number of parts. Therefore, it is possible to provide the condenser 1 that can reduce the thickness and the number of parts while ensuring the charging characteristics of the refrigerant.

  Further, the condenser 1 arranges the relay tank 9 communicating with the inside of the second modulator tank 12 by arranging the opening end 122 of the cylindrical body constituting the second modulator tank 12 in the second header. The tank 6 is integrally provided at the top, and a through hole 201 is formed, and a communication plate 20 is provided between the relay tank 9 and the first modulator tank 11. In the first modulator tank 11, a refrigerant outlet 112 is formed in a wall portion facing the relay tank 9. A refrigerant inlet 91 is formed in the relay tank 9 at a position facing the refrigerant outlet 112. The communication plate 20 is disposed between the relay tank 9 and the first modulator tank 11 so as to connect the refrigerant inlet 91, the through hole 201, and the refrigerant outlet 112.

  According to this configuration, by connecting the relay tank 9 and the first modulator tank so as to communicate with each other through the communication plate 20, the second header tank 6, the relay tank 9, and the first modulator tank 11 are connected. Even if it does not take the structure to join directly, since it can constitute so that both can communicate, the amount of heat transfer between both can be controlled and the performance fall of condenser 1 can be controlled. Furthermore, since both are connected by the plate material called the communication plate 20, the path | route when a refrigerant | coolant passes a communication plate is short, and the heat loss at the time of passage can be reduced compared with the case of duct connection etc. Therefore, the performance of the condenser 1 can be ensured by adopting the communication plate 20.

(Second Embodiment)
2nd Embodiment demonstrates the other form with respect to 1st Embodiment regarding the structure regarding the path | route with which a refrigerant | coolant flows from the 1st modulator tank 11A to the 2nd modulator tank 12A. FIG. 7 is a partial cross-sectional view for explaining a configuration related to a path through which a refrigerant flows from the first modulator tank 11A to the second modulator tank 12A in the condenser of the second embodiment. In FIG. 7, the components given the same reference numerals as those in FIG. 4 are the same elements, and the operational effects thereof are also the same.

  The condenser according to the second embodiment is different from the condenser 1 according to the first embodiment in that the second modulator tank 12A extends to the internal space 111 of the first modulator tank 11A, and the opening end 122 thereof is inside. The point which has the structure arrange | positioned in the space 111 is different. Except for this difference, the condenser according to the second embodiment and the condenser 1 according to the first embodiment are the same and exhibit the same effects.

  As shown in FIG. 7, the cylindrical body constituting the second modulator tank 12A penetrates through the second header tank 6A so that the open end 122 thereof is located inside the first modulator tank 11A. It is extended. With this configuration, the second header tank 6A has through-holes having an inner diameter through which the second modulator tank 12A can pass through the wall portion on the first header tank 5 side and the wall portion on the first modulator tank 11A side. Is formed. In the first modulator tank 11A, a through-hole having an inner diameter through which the second modulator tank 12A can pass is formed in a wall portion facing the second header tank 6A with a gap therebetween.

  Accordingly, the refrigerant that has passed through the communication path 66 from the second header tank 6 and has flowed into the first modulator tank 11A flows into the internal space 121 from the open end 122 of the second modulator tank 12A. The inside of the modulator tank 12A can be used as a modulator space.

  According to the condenser of the second embodiment, the second modulator tank 12A, which is a cylindrical body, extends to the inside of the first modulator tank 11A, thereby reducing the number of parts and the first configuration with a simple configuration. A communication path between the inside of the modulator tank 11A and the inside of the second modulator tank 12A can be realized. For example, as compared with the first embodiment, the partition member 21 and the communication plate 20 are not necessary, and the number of parts can be reduced. Further, since the rigidity of the second modulator tank 12A is increased by extending the second modulator tank 12A to the inside of the first modulator tank 11A, the core by the second modulator tank 12A is increased even when the length is increased. The reinforcement function with respect to the part 2 can be improved.

(Third embodiment)
3rd Embodiment demonstrates the other form with respect to 2nd Embodiment regarding the structure regarding the path | route through which a refrigerant | coolant flows from the 1st modulator tank 11B to the 2nd modulator tank 12B. FIG. 8 is a partial cross-sectional view for explaining a configuration related to a path through which a refrigerant flows from the first modulator tank 11B to the second modulator tank 12B in the condenser of the third embodiment. In FIG. 8, the constituent elements denoted by the same reference numerals as those in FIG.

  The condenser according to the third embodiment is different from the condenser according to the second embodiment in that the open end 221 of the connecting member 22 connected to the second modulator tank 12B is disposed in the internal space 111. The difference is that the second modulator tank 12B and the first modulator tank 11B communicate with each other. Except for this difference, the condenser according to the third embodiment and the condenser according to the second embodiment are the same and have the same effects.

  As shown in FIG. 8, the second modulator tank 12B is connected to the open end 222 of the cylindrical connecting member 22 outside the second header tank 6B. The connecting member 22 extends through the second header tank 6B so that the open end 221 is located inside the first modulator tank 11B. With this configuration, the second header tank 6B is formed with a through hole having an inner diameter through which the connecting member 22 can pass through the wall portion on the first header tank 5 side and the wall portion on the first modulator tank 11B side. Yes. In the first modulator tank 11B, a through hole having an inner diameter through which the connecting member 22 can pass is formed in a wall portion facing the second header tank 6B with a gap therebetween.

  Accordingly, the refrigerant that has flowed from the second header tank 6B through the communication passage 66 into the first modulator tank 11B passes through the passage in the communication member 22 from the open end 221 of the communication member 22 and passes through the second modulator tank. Since it flows into the internal space 121 of 12B, the inside of the second modulator tank 12B can be used as the modulator space.

  According to the condenser of the third embodiment, by extending the cylindrical connecting member 22 connected to the second modulator tank 12B to the inside of the first modulator tank 11B, the outer diameter dimension is increased. The adoption of the configuration in which the obtained second modulator tank 12B extends to the inside of the first modulator tank 11B can be avoided. For this reason, by brazing and joining the connecting member 22 whose outer diameter can be formed smaller than that of the second modulator tank 12B, the brazed joint area can be reduced and quality can be ensured. Further, the partition member 21 is not necessary as compared with the first embodiment, and a communication path between the inside of the first modulator tank 11 and the inside of the second modulator tank 12 is realized with a small number of parts and a simple configuration. Can do.

(Fourth embodiment)
In the fourth embodiment, another embodiment of the first embodiment will be described with respect to the configuration related to the path through which the refrigerant flows from the first modulator tank 11 to the second modulator tank 12. FIG. 9 is a partial cross-sectional view for explaining a configuration related to a path through which a refrigerant flows from the first modulator tank 11 to the second modulator tank 12 in the condenser of the fourth embodiment. In FIG. 9, the constituent elements having the same reference numerals as those in FIG.

  The condensing part 2a in the condenser of the fourth embodiment forms a so-called all-pass refrigerant flow. That is, in the condenser of the fourth embodiment, a single separator that partitions the internal space vertically is arranged inside the first header tank 5, and similarly a single sheet is arranged inside the second header tank 6 </ b> C. A separator is arranged. With these separators, the interiors of the first header tank 5 and the second header tank 6C are partitioned into two spaces in the vertical direction. Accordingly, the refrigerant flowing in from the inlet side pipe joint 7 flows in the order of the first header tank 5, the entire condensing part 2a, and the second header tank 6C. Therefore, the refrigerant flows through the so-called all paths in the condensing part 2a. Form.

  As shown in FIG. 9, the condenser of the fourth embodiment is different from the condenser 1 of the first embodiment in that the refrigerant outlet 112 of the first modulator tank 11 and the refrigerant inlet 68 of the second header tank 6C. Is different in that the first modulator tank 11 and the second header tank 6C are integrally joined. Except for this difference, the condenser according to the fourth embodiment and the condenser 1 according to the first embodiment are the same and exhibit the same effects. Further, since the portion where the opening end 122 of the second modulator tank 12 is located is the internal space 63A of the second header tank 6C, the refrigerant also enters the second modulator tank 12 from the second header tank 6C. It is an inflow structure.

  Therefore, the refrigerant flowing from the second header tank 6C through the communication path 66 and flowing into the first modulator tank 11 passes through the refrigerant outlet 112 and the refrigerant inlet 68 and passes through the internal space 63A of the second header tank 6C. Then, it flows into the internal space 121 of the second modulator tank 12 from the open end 122, so that the inside of the second modulator tank 12 can be utilized as the modulator space. Further, a part of the refrigerant flowing into the second header tank 6C from the condensing unit 2a can move upward and flow into the internal space 121 of the second modulator tank 12 from the opening end 122 that opens in the internal space 63A. .

  According to the condenser of the fourth embodiment, in the condenser in which the condensing unit 2a forms a so-called all-pass refrigerant flow, the opening end 122 of the second modulator tank 12 that is a cylindrical body is connected to the second header tank 6C. The first modulator tank 11 is arranged with a small number of parts and a simple configuration by connecting the openings for communicating the inside of the first modulator tank 11 and the inside of the second header tank 6C. A communication path between the inside and the inside of the second modulator tank 12 can be realized. Further, the partition member 21 is not necessary as compared with the first embodiment, and a communication path between the inside of the first modulator tank 11 and the inside of the second modulator tank 12 is realized with a small number of parts and a simple configuration. Can do.

(Fifth embodiment)
5th Embodiment demonstrates the other form with respect to 1st Embodiment regarding a 2nd modulator tank. FIG. 10 is a partial cross-sectional view showing a part of the second modulator tank 12C and the core part 2 in the condenser of the fifth embodiment. In FIG. 10, the components given the same reference numerals as those in FIG. 2 are the same elements, and the operational effects thereof are also the same.

  The condenser of the fifth embodiment is different from the condenser 1 of the first embodiment in the configuration of the second modulator tank 12C. Except for this difference, the condenser of the fifth embodiment and the condenser 1 of the first embodiment are the same, and have the same effects.

  As shown in FIG. 10, the second modulator tank 12C has a cross-sectional shape orthogonal to the tube longitudinal direction X as shown in FIG. The second modulator tank 12 </ b> C has a flat base portion 124 </ b> C where a portion to be brazed and joined to the outer fin 4 is easy to ensure a contact area with the outer fin 4, and the refrigerant from the first modulator tank 11 circulates. And a cylindrical tubular portion. The second modulator tank 12C having such a configuration is formed by extrusion molding. In addition, D shown in FIG. 10 represents the thickness dimension of the core part 2.

  According to the condenser of the fifth embodiment, the second modulator tank 12 </ b> C has a base portion 124 </ b> C in which a joint portion with the outer fin 4 is flat, and a cylindrical shape through which the refrigerant from the first modulator tank 11 flows. These are formed by extrusion molding. With this configuration, since the contact area between the flat base portion 124C and the outer fin 4 can be increased, the reinforcing function of the second modulator tank 12C with respect to the core portion 2 can be enhanced. Further, in the case of the second modulator tank 12C having such a configuration, the same parts as the first modulator tank 11 can be used, so that the number of parts can be reduced and the number of parts management man-hours can be reduced. Reduction can be achieved.

(Sixth embodiment)
In the sixth embodiment, another embodiment of the second modulator tank will be described with respect to the first embodiment. FIG. 11 is a partial cross-sectional view showing a part of the second modulator tank 12D and the core part 2 in the condenser of the sixth embodiment. In FIG. 11, the constituent elements having the same reference numerals as those in FIG.

  The condenser of the sixth embodiment is different from the condenser 1 of the first embodiment in the configuration of the second modulator tank 12D. Except for this difference, the condenser according to the sixth embodiment and the condenser 1 according to the first embodiment are the same and exhibit the same effects.

  As shown in FIG. 11, the second modulator tank 12D has a cross-sectional shape perpendicular to the tube longitudinal direction X as shown in FIG. The second modulator tank 12D is configured by laminating a plurality of flat tubes. The plurality of tubes 3 used for the second modulator tank 12 </ b> D are the same tubes as the tubes 3 constituting the core portion 2. Since the adhesive 30 is filled between the stacked tubes 3, the plurality of tubes 3 are closely and integrally formed as a single tank. In addition, D shown in FIG. 11 represents the thickness dimension of the core part 2. The adhesive 30 can be substituted for a clad material in which a brazing material is clad. Since the clad material is disposed between the tubes 3, the tubes 3 are bonded to each other through the clad material after the brazing process. Form.

  According to the condenser of the sixth embodiment, the second modulator tank 12D is configured by laminating a plurality of the same tubes as the tubes 3 constituting the core portion 2 integrally. According to this configuration, since the tube 3 employed in the core portion 2 is used as a member constituting the second modulator tank 12D, the sharing of components proceeds, and the number of components and the number of component management man-hours can be reduced. Manufacturing cost can be reduced. In addition, since the tube 3 has a flat shape, the same effect as the flat base portion 124C of the fifth embodiment can be obtained, and the reinforcing function of the second modulator tank 12C with respect to the core portion 2 can be enhanced.

(Seventh embodiment)
7th Embodiment demonstrates the other form with respect to 1st Embodiment regarding a 2nd modulator tank. FIG. 12 is a partial cross-sectional view showing a part of the second modulator tank 12D and the core 2 in the condenser of the seventh embodiment, and shows the structure of the second modulator tank 12E of the seventh embodiment. Yes. FIG. 13 is a partial cross-sectional view showing a second modulator tank 12F which is a first modification of the second modulator tank 12E. FIG. 14 is a partial cross-sectional view showing a second modulator tank 12G as a second modification. In FIGS. 12 to 14, the components denoted by the same reference numerals as those in FIG. 2 are the same elements, and the operational effects thereof are also the same. In addition, D shown in each figure of FIGS. 12-14 represents the thickness dimension of the core part 2. FIG.

  The condenser of the seventh embodiment is different from the condenser 1 of the first embodiment in the configuration of the second modulator tank. Except for this difference, the condenser according to the seventh embodiment and the condenser 1 according to the first embodiment are the same and exhibit the same effects.

  First, as shown in FIG. 12, the second modulator tank 12E is formed by combining a plurality of members 12e1 and 12e2 formed by pressing. The second modulator tank 12E includes a first member 12e1 having a U-shaped cross-section perpendicular to the tube longitudinal direction X, and a second member 12e2 having a U-shape that is similarly U-shaped and smaller in outer shape than the first member 12e1. Consists of. The second modulator tank 12E is formed by aligning the outer surface of the second member 12e2 with the inner surface of the first member 12e1 in the middle, and brazing and joining them.

  Further, as shown in FIG. 13, a second modulator tank 12F, which is a first modification of the second modulator tank 12E, is formed by combining a plurality of members 12f1 and 12f2 formed by pressing. The second modulator tank 12F includes a first member 12f1 having a flat cross-sectional shape perpendicular to the tube longitudinal direction X and a second member 12f2 having a U-shaped cross-sectional shape. The second modulator tank 12F is formed by placing the first member 12f1 on the end face on the opening side of the U-shaped second member 12f2 joined to the outer fin 4, and brazing and joining them. .

  Further, as shown in FIG. 14, a second modulator tank 12G, which is a second modification of the second modulator tank 12E, is formed by combining a plurality of members 12g1, 12g2 formed by pressing. The second modulator tank 12G includes a first member 12g1 whose cross-sectional shape orthogonal to the tube longitudinal direction X is L-shaped, and a second member 12g2 whose cross-sectional shape is also L-shaped. The second modulator tank 12G is formed by combining the first member 12g1 in an inverted L-shaped posture with the L-shaped second member 12f2 joined to the outer fin 4 and brazing and joining them. Is done.

  According to the condenser of the seventh embodiment, by performing an easy processing method, a high contact area can be obtained on the joint surface with the outer fin 4 in the second modulator tanks 12E, 12F, and 12G, and the manufacturing cost can be further reduced. Can be planned.

(Eighth embodiment)
In the eighth embodiment, with respect to the configuration related to the connection between the first modulator tank 11C and the second header tank 6D, another form of the fourth embodiment will be described. FIG. 15 is a partial cross-sectional view for explaining a configuration related to the first modulator tank 11C and the second header tank 6D in the condenser of the eighth embodiment. The cross-sectional view shown in FIG. 15 shows a shape when a communication portion that connects the inside of the first modulator tank 11C and the inside of the second header tank 6D is cut by a cross section orthogonal to the tube stacking direction Z. In FIG. 15, the constituent elements having the same reference numerals as those in FIG.

  The condenser of the eighth embodiment is different from the fourth embodiment in that the condenser is connected by a communication member 20A in which the first modulator tank 11C and the second header tank 6D are interposed. Except for this difference, the condenser according to the eighth embodiment and the condenser according to the fourth embodiment are the same and have the same effects.

  As shown in FIG. 15, the second header tank 6D and the first modulator tank 11C are separate members formed by extrusion molding. 11C of 1st modulator tanks are provided with the cylindrical part through which a refrigerant | coolant distribute | circulates, and the side plate part 113 which makes the flat part integrally provided in the side part by the side of the 2nd header tank 6D of a cylindrical part. A penetrating refrigerant outlet 112 is formed in the side plate 113. A refrigerant inlet 68 is formed in the second header tank 6D at a position facing the refrigerant outlet 112.

  A communication member 20A having a through hole 201 is mounted between the second header tank 6D and the first modulator tank 11C. The communication member 20A includes claw-shaped hooking portions 202 and 203 that are bent from both ends. When the communication member 20A is mounted between the second header tank 6D and the first modulator tank 11C to connect the two tanks, the refrigerant inlet 68, the through hole 201, and the refrigerant outlet 112 are arranged in the tube longitudinal direction X. Arranged so that they are connected together.

  The hooking portion 202 is further bent and held so as to hold the end portion of the side plate portion 113 of the first modulator tank 11C, and the hooking portion 203 holds the second header tank 6D. Then, bend and hold. By brazing and joining the respective parts in this state, the second header tank 6D and the first modulator tank 11C are fixed while securing a communication state between the internal space 63A and the internal space 111.

  Accordingly, the refrigerant flowing from the second header tank 6D through the communication path 66 and flowing into the first modulator tank 11C passes through the refrigerant inlet 68, the through hole 201, and the refrigerant outlet 112, and then passes through the second header tank 6D. To the internal space 63A. Furthermore, since the refrigerant flows into the internal space 121 from the opening end 122 of the second modulator tank 12, the inside of the second modulator tank 12 can be utilized as the modulator space.

  According to the condenser of the eighth embodiment, since the refrigerant is connected to the second header tank 6D and the first modulator tank 11C by the communication member 20A, the two tanks are not integrated so as to be in direct contact with each other. The structure can be adopted. Therefore, it is possible to form an air layer for heat insulation between both tanks, and heat transfer between both tanks can be suppressed. In addition, since the hooking portions 202 and 203 are used, the second header tank 6D and the first modulator tank 11C are temporarily fixed and then brazed and joined, so that a communication path between the two tanks is reliably formed. be able to.

(Ninth embodiment)
9th Embodiment demonstrates the other form with respect to 1st Embodiment regarding the structure regarding connection with 1st modulator tank 11D and 2nd header tank 6E. FIG. 16 is a partial cross-sectional view for explaining a configuration related to the first modulator tank 11D and the second header tank 6E in the condenser of the ninth embodiment. The cross-sectional view shown in FIG. 16 shows a shape when a portion where a communication path is not formed between the first modulator tank 11D and the second header tank 6E is cut by a cross section orthogonal to the tube stacking direction Z. ing. FIG. 17 is a partial cross-sectional view for explaining a configuration relating to a path through which a refrigerant flows from the first modulator tank 11D to the second header tank 6E in the condenser of the ninth embodiment. The cross-sectional view shown in FIG. 17 shows a shape when a communication portion that connects the inside of the first modulator tank 11D and the inside of the second header tank 6E is cut by a cross section orthogonal to the tube stacking direction Z. In FIG. 16 and FIG. 17, the constituent elements having the same reference numerals as those in FIG.

  In the condenser of the ninth embodiment, the first modulator tank 11D and the second header tank 6E that are integrally formed with respect to the fourth embodiment are mounted in slit-like holes formed in both tanks. It is different in that it is connected by the communication plate 20B. Except for this difference, the condenser of the ninth embodiment and the condenser of the fourth embodiment are the same, and have the same effects.

  As shown in FIG. 16, the second header tank 6E and the first modulator tank 11D are a common member formed integrally by extrusion molding. This common member is one member formed by, for example, extrusion molding. This common member is formed in a common side portion 40 where a cylindrical portion of the first modulator tank 11D that forms a columnar inner space and a cylindrical portion of the second header tank 6E that also forms a columnar inner space overlap. They are connected and formed integrally. The common side part 40 is formed in the whole or a part between both tanks so as to extend in the tube stacking direction Z.

  As shown in FIG. 17, in the common member, a slit-like hole 40a is formed at a portion where a communication path between both tanks is to be formed in the common side portion 40 extending in the tube stacking direction Z. . The communication plate 20B in which the through hole 201 is formed is attached to the hole 40a, and the common member and the communication plate 20B are brazed and joined. Thereby, the internal space 111 of the first modulator tank 11D and the internal space 63A of the second header tank 6E communicate with each other through the through hole 201.

  Therefore, the refrigerant flowing from the second header tank 6E through the communication path 66 and flowing into the first modulator tank 11D passes through the through hole 201 and reaches the internal space 63A of the second header tank 6E. Furthermore, since the refrigerant flows into the internal space 121 from the opening end 122 of the second modulator tank 12, the inside of the second modulator tank 12 can be utilized as the modulator space.

  According to the condenser of the ninth embodiment, the second header tank 6E and the first modulator tank 11D are a common member formed integrally by extrusion molding. In the condenser, the communication plate 20B in which the through hole 201 is formed is attached to the common member, so that the internal space 63A of the second header tank 6E and the internal space 111 of the first modulator tank 11D pass through the through hole 201. Communicate through.

  According to this configuration, since the second header tank 6E and the first modulator tank 11D are formed as a common member by extrusion molding, the number of parts and the number of parts management can be reduced, and the manufacturing cost can be reduced. Also, a brazing step of fixing the second header tank 6E and the first modulator tank 11D by mounting the communication plate 20B in which the through hole 201 is formed at a predetermined position of the common member (hole portion 40a). Without passing through, the communication path between the two tanks can be reliably formed. It is possible to provide a condenser manufacturing process that reduces the brazing joint area.

(Other embodiments)
In the above-described embodiment, the preferred embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. It is.

  In the said embodiment, although the 2nd modulator tank 12 is provided over the whole horizontal direction length of the core part 2, this invention is not limited to this. For example, the second modulator tank 12 may be joined to the outer fin 4 over a part of the core portion 2 so that the reinforcing function of the core portion 2 can be exhibited.

  Each member constituting the condenser of the above embodiment has been described as being formed of an aluminum material or an aluminum alloy material, but may be formed of iron, copper, stainless steel, or an alloy thereof.

  In the above embodiment, the tube 3 has a multi-hole tube structure formed by extrusion, but a structure in which an inner fin is provided inside the tube 3 may be adopted. The inner fin is a corrugated member in which peaks and valleys are alternately and continuously formed, and is brazed and joined to the inner wall surface of the tube 3. Further, the present invention can be applied to a condenser having a tube not provided with an inner fin.

DESCRIPTION OF SYMBOLS 1 ... Condenser 2 ... Core part 2a ... Condensing part 3 ... Tube 4 ... Outer fin 6, 6A, 6B, 6C, 6D, 6E ... 2nd header tank (header tank)
DESCRIPTION OF SYMBOLS 9 ... Relay tank 11, 11A, 11B, 11D ... 1st modulator tank 12, 12A, 12B, 12C, 12D ... 2nd modulator tank 20, 20B ... Communication board 20A ... Communication member 22 ... Communication member 68, 91 ... Refrigerant inlet 112 ... Refrigerant outlet 113 ... Side plate portion 122,221 ... Open end 124C ... Base portion 201 ... Through hole 202,203 ... Hanging portion X ... Longitudinal direction of tube Y ... Flow direction of external fluid Z ... Tube Stacking direction

Claims (10)

A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6) connected to the inside of the plurality of tubes (3) by connecting end portions in the tube longitudinal direction (X) of the plurality of tubes (3) constituting the core portion (2);
The refrigerant from the header tank (6) communicates with the inside of the header tank (6) so that the refrigerant can flow in, and is provided along the side of the header tank (6) in the tube longitudinal direction (X). A first modulator tank (11) having a function of storing liquid refrigerant;
A second modulator tank (12) that communicates with the inside of the first modulator tank (11) and is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
The second modulator tank (12) is provided above the core portion (2), and of the plurality of outer fins (4), the core portion (2) has a tube stacking direction (Z). A condenser characterized by being joined to an outer fin (4) disposed at an end. A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6) connected to the inside of the plurality of tubes (3) by connecting end portions in the tube longitudinal direction (X) of the plurality of tubes (3) constituting the core portion (2);
The refrigerant from the header tank (6) communicates with the inside of the header tank (6) so that the refrigerant can flow in, and is provided along the side of the header tank (6) in the tube longitudinal direction (X). A first modulator tank (11) having a function of storing liquid refrigerant;
A second modulator tank (12) that communicates with the inside of the first modulator tank (11) and is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
The second modulator tank (12) is joined to the outer fin (4) disposed at the end of the core portion (2) in the tube stacking direction (Z) among the plurality of outer fins (4). And
Furthermore, the relay tank (9) communicated with the inside of the second modulator tank (12) by disposing the open end (122) of the cylindrical body constituting the second modulator tank (12) inside. Is integrally provided at the top of the header tank (6),
A through hole (201) is formed, and includes a communication plate (20) interposed between the relay tank (9) and the first modulator tank (11),
The first modulator tank (11) has a refrigerant outlet (112) formed on a wall facing the relay tank (9), and the relay tank (9) faces the refrigerant outlet (112). A refrigerant inlet (91) is formed at a position where
The communication plate (20) connects the relay tank (9) and the first modulator tank (11) so as to connect the refrigerant inlet (91), the through hole (201) and the refrigerant outlet (112). condenser coagulation characterized in that it is disposed between. A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6A) that is connected to the inside of the plurality of tubes (3) by connecting end portions in the tube longitudinal direction (X) of the plurality of tubes (3) constituting the core portion (2);
The refrigerant from the header tank (6A) communicates with the inside of the header tank (6A) so that the refrigerant can flow in, and is provided along the side of the header tank (6A) in the tube longitudinal direction (X). A first modulator tank (11A) having a function of storing liquid refrigerant;
A second modulator tank (12A) that communicates with the inside of the first modulator tank (11A) and is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
Said 2nd modulator tank (12A) is joined to the outer fin (4) arrange | positioned at the edge part of the said tube lamination direction (Z) in the said core part (2) among these outer fins (4). And
The cylindrical body constituting the second modulator tank (12A) penetrates the header tank (6A), and the open end (122) of the cylindrical body is the interior of the first modulator tank (11A). It is provided to be located in
The refrigerant can flow from the inside of the first modulator tank (11A) to the inside of the second modulator tank (12A), and the inside of the first modulator tank (11A) and the second modulator tank ( condenser coagulation characterized in that the internal 12A) communicates. A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6B) that is connected to an end of the tube longitudinal direction (X) in the plurality of tubes (3) constituting the core portion (2) and communicates with the inside of the plurality of tubes (3);
The refrigerant from the inside of the header tank (6B) communicates with the inside of the header tank (6B) so that the refrigerant can flow in, and is provided along the side of the header tank (6B) in the tube longitudinal direction (X). A first modulator tank (11B) having a function of storing liquid refrigerant;
A second modulator tank (12B) that communicates with the inside of the first modulator tank (11B) and is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
The second modulator tank (12B) is joined to the outer fin (4) disposed at the end of the core portion (2) in the tube stacking direction (Z) among the plurality of outer fins (4). And
Furthermore, a cylindrical connecting member (22) connected to the second modulator tank (12B) is provided,
The connecting member (22) passes through the header tank (6B), and is provided so that the open end (221) of the connecting member (22) is located inside the first modulator tank (11B). ,
The refrigerant can flow from the inside of the first modulator tank (11B) to the inside of the second modulator tank (12B), and the inside of the first modulator tank (11B) and the second modulator tank ( condenser coagulation you characterized in that internal and communicate with each other through said connecting member (22) of 12B). A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6C) that is connected to the ends of the tubes (3) in the tube longitudinal direction (X) in the tubes (3) constituting the core portion (2) and communicates with the inside of the tubes (3);
The refrigerant from the header tank (6C) communicates with the inside of the header tank (6C) so that the refrigerant can flow in, and is provided along the side of the header tank (6C) in the tube longitudinal direction (X). A first modulator tank (11) having a function of storing liquid refrigerant;
A second modulator tank (12) that communicates with the inside of the first modulator tank (11) and is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
The second modulator tank (12) is joined to the outer fin (4) disposed at the end of the core portion (2) in the tube stacking direction (Z) among the plurality of outer fins (4). And
An opening end (122) of a cylindrical body constituting the second modulator tank (12) is disposed inside the header tank (6C), and the inside of the second modulator tank (12) and the header The inside of the tank (6C) communicates,
The first modulator tank (11) has a refrigerant outlet (112) formed on a wall facing the header tank (6C), and the header tank (6C) is opposed to the refrigerant outlet (112). A refrigerant inlet (68) is formed at a position where
The first modulator tank (11) and the header tank (6C) is coagulation you characterized in that it is integrally provided so as to connect the coolant inlet (68) and the refrigerant outflow port (112) Contractor. A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6D) that is connected to ends of the tubes (3) in the tube longitudinal direction (X) in the plurality of tubes (3) constituting the core portion (2) and communicates with the inside of the tubes (3);
The refrigerant from the header tank (6D) communicates with the inside of the header tank (6D) so that the refrigerant can flow in, and is provided along the side of the header tank (6D) in the tube longitudinal direction (X). A first modulator tank (11C) having a function of storing liquid refrigerant;
A second modulator tank (12) that communicates with the inside of the first modulator tank (11C) and that is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
The second modulator tank (12) is joined to the outer fin (4) disposed at the end of the core portion (2) in the tube stacking direction (Z) among the plurality of outer fins (4). And
The header tank (6D) and the first modulator tank (11C) are separate members formed by extrusion molding.
The first modulator tank (11C) includes a cylindrical portion through which the refrigerant flows, and a flat side plate portion (113) provided on a side portion of the cylindrical portion on the header tank (6D) side. Formed with
A refrigerant outlet (112) is formed through the side plate (113), and a refrigerant inlet (68) is formed in the header tank (6D) at a position facing the refrigerant outlet (112). And
A through hole (201) is formed, and includes a communication member (20A) interposed between the header tank (6D) and the first modulator tank (11C),
The communication member (20A) includes a claw-shaped hooking portion (202, 203), and the header so as to connect the refrigerant inlet (68), the through hole (201), and the refrigerant outlet (112). It is arranged between the tank (6D) and the first modulator tank (11C), and the header tank (6D) and the first modulator tank (11C) are fixed by the hooking portions (202, 203). condenser coagulation characterized. A plurality of tubes (3) in which refrigerant passages through which refrigerant flows are formed, and a plurality of outer fins (4) joined to the outer surface of the tubes (3) and stacked alternately with the tubes (3) A core part (2) configured to include:
A header tank (6E) that is connected to ends of the tubes (3) in the tube longitudinal direction (X) in the tubes (3) constituting the core portion (2) and communicates with the inside of the tubes (3);
The refrigerant from the header tank (6E) communicates with the inside of the header tank (6E) so as to be able to flow in, and is provided along the side of the tube longitudinal direction (X) of the header tank (6E). A first modulator tank (11D) having a function of storing liquid refrigerant;
A second modulator tank (12) that communicates with the inside of the first modulator tank (11D) and that is provided along the side of the core portion (2) in the tube stacking direction (Z);
With
The second modulator tank (12) is joined to the outer fin (4) disposed at the end of the core portion (2) in the tube stacking direction (Z) among the plurality of outer fins (4). And
The header tank (6E) and the first modulator tank (11D) are a common member formed integrally by extrusion molding.
A communication plate (20B) in which a through hole (201) is formed;
By mounting the communication plate (20B) on the common member, the inside of the header tank (6E) and the inside of the first modulator tank (11D) communicate with each other through the through hole (201). condenser coagulation characterized.   The second modulator tank (12C) has a base portion (124C) in which a joining portion with the outer fin (4) is flat, and a cylindrical shape through which refrigerant from the first modulator tank (11) flows. The condenser according to any one of claims 1 to 7, wherein the condenser is formed by extrusion molding.   The second modulator tank (12D) is formed by integrally stacking a plurality of tubes identical to the tubes (3) constituting the core portion (2). Item 8. The condenser according to any one of Items 7.   8. The second modulator tank (12 </ b> E, 12 </ b> F, 12 </ b> G) is formed by combining a plurality of members formed by press working. Condenser.

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