WO2018037897A1

WO2018037897A1 - Cooling device

Info

Publication number: WO2018037897A1
Application number: PCT/JP2017/028660
Authority: WO
Inventors: 真樹原田; 位司安田; ヴァスコブルゲーテ
Original assignee: 株式会社デンソー; ホアンジデウスエフィリョスソシエダッドアノニマ
Priority date: 2016-08-24
Filing date: 2017-08-08
Publication date: 2018-03-01
Also published as: JP2018031297A; JP6662241B2; DE112017004227B4; DE112017004227T5

Abstract

This cooling device is provided with a high-temperature-side tank (1), a core section (2), a low-temperature-side tank (3), and a water suction pipe (44, 144, 244). The high-pressure-side tank has an inflow section (10) into which supercharged air flows. The core section cools supercharged air by heat exchange between outside air and supercharged air flowing out of the high-temperature-side tank and flowing through the inside of the core section. The low-temperature-side tank has an outflow section (43) out of which supercharged air cooled by the core section flows toward external equipment. The water suction pipe is provided so as to extend from the bottom section (52) of the low-temperature-side tank to the inside of the outflow section. The low-temperature-side tank has a first tank section (4) and a second tank section (5), which are formed from a resin. The first tank section has: a bottom plate section (42, 142) having a through-hole (420) partially formed therein; an upper end section (45) connected to the core section; and an upper chamber (41) formed within the first tank section. In a state in which the upper end peripheral edge (50) of the second tank section is connected to the first tank section, the second tank section forms a lower chamber (51) located below the upper chamber. The first tank section and the second tank section form joints (40, 50) where the first and second tank sections are welded together.

Description

Cooling system

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2016-164003 filed on Aug. 24, 2016, the disclosure of which is incorporated herein by reference.

The present disclosure relates to a cooling device that cools supercharged air with air.

For example, in the case of a downflow type intercooler in which supercharged air flows downward, the intake air condenses and condensate accumulates in the tank, and the water accumulated in the tank flows out into the engine all at once during acceleration. is there. Therefore, in Patent Document 1, an intake air cooling device in which a reservoir for temporarily storing condensed water is provided in the lower part of the low temperature side tank, and a water suction pipe extending from the bottom of the reservoir to a position opening in the outlet pipe is provided. Is disclosed.

Japanese Patent Laying-Open No. 2015-63913

The interior of the low temperature side tank in Patent Document 1 is divided into an upper chamber and a lower chamber constituting a reservoir by an intermediate partition plate into which the supercharged air after cooling at the core portion flows. According to this configuration, since the inner surface area of one low temperature side tank having a bottom portion is increased, the area receiving pressure is increased, and a low temperature side tank having high pressure resistance is required.

Further, in the apparatus of Patent Document 1, in order to form a reservoir, a separate partition plate, which is a separate part, is fixed to the low temperature side tank with a bolt or the like. For this reason, assembly man-hours are required and there is room for improvement in assembly costs.

In view of the above points, an object of the present disclosure is to provide a cooling device that reduces the pressure receiving area of the tank and improves the assemblability.

The cooling device according to one aspect of the present disclosure includes a high temperature side tank, a core portion, a low temperature side tank, and a water suction pipe. The high-pressure side tank has an inflow portion into which supercharged air flows. The core portion cools the supercharged air by exchanging heat between the supercharged air flowing out of the high-temperature side tank and circulating inside and the outside air. The low temperature side tank has an outflow part through which the supercharged air cooled in the core part flows out toward the external device. The water suction pipe is provided so as to extend from the bottom of the low temperature side tank to the inside of the outflow part. The low temperature side tank has a first tank portion and a second tank portion made of resin. The first tank portion has a bottom plate portion partially provided with a through hole, an upper end portion connected to the core portion, and an upper chamber formed inside. The second tank portion forms a lower chamber positioned below the upper chamber in a state where the upper peripheral edge portion is connected to the first tank portion. The first tank part and the second tank part form a joint part welded to each other.

According to this cooling device, the low temperature side tank is formed by welding the first tank part forming the upper chamber and the second tank part forming the lower chamber capable of storing water. For this reason, since the length dimension of the vertical direction can be made small about each tank part, the internal surface area which receives the pressure of supercharging air in one tank part can be made small. Thereby, the pressure | voltage resistant capability which one container should be equipped with can be reduced significantly compared with the case of one low temperature side tank like a prior art. For this reason, since the pressure | voltage resistant capability required for each of a 1st tank part and a 2nd tank part can be suppressed, it becomes possible to form a 1st tank part and a 2nd tank part with a resin material instead of a metal, and product cost Can contribute to the reduction of

Furthermore, according to this cooling device, since the upper chamber and the lower chamber in the low temperature side tank can be partitioned by the bottom plate portion of the first tank portion, there is no need to attach the partition plate to the low temperature side tank as in the prior art. Can be. As described above, it is possible to provide a cooling device that reduces the pressure receiving area of the tank and improves the assemblability.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings.
It is the perspective view which showed the outline | summary of the cooling device of 1st Embodiment. It is the perspective view which showed the outline | summary of the 1st tank part and 2nd tank part which comprise a low temperature side tank. It is the fragmentary sectional view which showed the internal structure of the low temperature side tank. It is the fragmentary sectional view which showed the combined state of the water suction pipe and the 1st tank part in 2nd Embodiment. It is the fragmentary sectional view which showed the combined state of the water suction pipe and the 1st tank part in 3rd Embodiment.

Hereinafter, a plurality of modes for carrying out the present disclosure will be described 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. Not only combinations of parts that clearly indicate that the combination is possible in each embodiment, but also a combination of the embodiments even if they are not clearly specified unless there is a problem with the combination. It is also possible.

(First embodiment)
A cooling device 100 according to the first embodiment will be described with reference to FIGS. 1, 2, and 3. The cooling device 100 is a heat exchanger that is installed in a passage through which supercharged air flows in an internal combustion engine including a supercharger and cools air that has risen in temperature due to compression of the supercharger. The cooling device 100 contributes to improving fuel efficiency and output.

As shown in FIG. 1, the cooling device 100 includes a core that cools the supercharged air by exchanging heat between the high temperature side tank 1 into which the supercharged air flows and the supercharged air that has flowed out of the high temperature side tank 1 and the external air. Part 2, low temperature side tank 3 into which supercharged air cooled by core part 2 flows, and water suction pipe 44. The high temperature side tank 1, the core part 2, and the low temperature side tank 3 are provided in this order from the upstream side to the downstream side of the supercharged air flow.

The high temperature side tank 1 has an inflow portion 10 that forms an inflow port through which supercharged air flows. A duct or hose that forms an intake path of the internal combustion engine is connected to the inflow portion 10. This duct or hose is connected, for example, to the discharge part of the supercharger.

The core part 2 is a downflow type core in which supercharged air flows downward as shown in FIG. The core portion 2 includes a plurality of passages through which supercharged air flows, and air flows around the tubes constituting the passages. The plurality of tubes in the core portion 2 are fixed to the core plates at both ends by inserting each of both ends into the holes of the core plate. The core plate that supports the plurality of tubes on the high temperature side tank 1 side is caulked so as to cover the outer surface of the high temperature side tank 1, and the core plate that supports the plurality of tubes on the low temperature side tank 3 side is the low temperature side tank 3. It is caulked so as to cover the outer surface. Thereby, the core part 2 is caulked and fixed to each of the high temperature side tank 1 and the low temperature side tank 3.

The supercharged air that has flowed out of the high temperature side tank 1 is distributed to a plurality of passages in the core portion 2 and then merges inside the low temperature side tank 3. The external air exchanges heat with the supercharged air flowing in the tube by directly contacting the tube or indirectly through the fins. Since the heat of the supercharged air moves to the air flowing outside through the tubes and fins, the supercharged air can be cooled.

The low temperature side tank 3 includes an outflow portion 43 that forms an outflow port through which the supercharged air cooled in the core portion 2 flows out toward an external device. This external device is, for example, a throttle valve or an internal combustion engine. The outflow portion 43 is connected to a duct or hose that forms an intake path of the internal combustion engine. This duct or hose is connected to, for example, an intake portion of the internal combustion engine. The high temperature side tank 1 and the low temperature side tank 3 are each connected to a vehicle side member via a bracket or the like.

As shown in FIG. 3, the low temperature side tank 3 is formed by combining a first tank part 4 and a second tank part 5. The 1st tank part 4 and the 2nd tank part 5 form the coupling | bond part welded mutually. The lower end peripheral portion 40 of the first tank portion 4 and the upper end peripheral portion 50 of the second tank portion 5 have the same shape. By joining the lower end peripheral part 40 and the upper end peripheral part 50, one joint surface is formed, and the outer periphery of the joint part becomes a joint part welded. The outer periphery of the joint is welded over the entire periphery by, for example, vibration welding, hot plate welding, or laser welding, thereby forming a seal portion that blocks the inside and outside of the tank portion.

The first tank portion 4 is a resin container having an opening at the upper end and a bottom plate portion 42 serving as a bottom at the lower portion. The bottom plate part 42 is located above the lower end peripheral part 40. The second tank unit 5 is a resin container that includes an upper end peripheral portion 50 that is located at the upper end and forms an opening, and that forms a lower chamber 51 that is positioned below the upper chamber 41 in the first tank unit 4. is there. The lower chamber 51 functions as a reservoir tank that temporarily accumulates condensed water. The first tank portion 4 and the second tank portion 5 can be formed of a resin having high hardness such as 6,6-nylon or glass-containing resin.

The first tank portion 4 is formed between an upper end portion 45 having an opening and connected to the core portion 2, a bottom plate portion 42 facing the upper end portion 45, and the upper end portion 45 and the bottom plate portion 42. And an upper chamber 41. The upper chamber 41 is a chamber into which the supercharged air that has flowed out of the core portion 2 flows first in the low temperature side tank 3. The bottom plate portion 42 is provided with a plurality of through holes 420 at arbitrary locations. The upper chamber 41 and the lower chamber 51 are partitioned by the bottom plate portion 42 but communicated by the through hole 420.

As shown in FIGS. 2 and 3, the bottom plate portion 42 preferably has a shape in which an end portion closer to the outflow portion 43 is positioned below the opposite side. In this case, the through hole 420 is provided at least in a portion of the bottom plate portion 42 that is located below the outflow portion 43. Since the supercharged air that has flowed into the first tank portion 4 flows toward the outflow portion 43, the side close to the outflow portion 43 in the bottom plate portion 42 is a downstream portion and the opposite side is an upstream portion. Accordingly, the bottom plate portion 42 has a shape that descends from the upstream portion to the downstream portion. With this configuration, the water that has dropped onto the bottom plate portion 42 flows to the lower side of the bottom plate portion 42, passes through the through hole 420, and falls to the second tank portion 5.

The outflow part 43 is provided in the first tank part 4. The outflow part 43 extends so that the tip is positioned higher than the base side near the side wall of the first tank part 4. With this configuration, even if condensed water or the like that has entered the inside of the low temperature side tank 3 overflows into the outflow portion 43, it returns to the inside of the low temperature side tank 3 due to gravity.

The water suction pipe 44 is provided so that both ends thereof are open and extend from the bottom portion 52 of the low temperature side tank 3 to the inside of the outflow portion 43. The water suction pipe 44 in the bottom portion 52 of the low temperature side tank 3 is preferably provided so that the opening end portion thereof is positioned at the lowermost portion of the bottom surface of the second tank portion 5. The water suction pipe 44 is provided integrally with the first tank portion 4 in a state of being integrally formed with the bottom plate portion 42. Therefore, the water suction pipe 44 extends from the inside of the first tank part 4 to the bottom surface of the second tank part 5 so as to penetrate the bottom plate part 42. The water suction pipe 44 can be formed of the same resin material as that of the first tank portion 4, for example, a resin having high hardness such as 6,6-nylon or glass-containing resin.

The passage sectional area in the outflow portion 43 is smaller than the passage sectional area in the low temperature side tank 3. With this configuration, the flow rate of the supercharged air in the outflow portion 43 is larger than the flow rate of the supercharged air in the low temperature side tank 3. That is, since the supercharged air that has flowed into the low temperature side tank 3 increases in speed when passing through the outflow portion 43, the static pressure in the tank changes to the dynamic pressure in the outflow portion 43, and the inside of the outflow portion 43 The static pressure in the tank will be lower than the static pressure in the tank. Due to this pressure difference, the water accumulated in the lower chamber 51 is sucked into the outflow portion 43 from the bottom portion 52 of the second tank portion 5 through the water suction pipe 44.

Hereinafter, effects brought about by the cooling device 100 of the first embodiment will be described. The cooling device 100 includes a high temperature side tank 1, a core portion 2 that cools the supercharged air that has flowed out of the high temperature side tank 1 by heat exchange with external air, and supercharged air that has been cooled in the core portion 2 flows out. A low temperature side tank 3 and a water suction pipe 44 that sucks up water in the low temperature side tank 3 are provided. The low temperature side tank 3 is below the upper chamber 41 formed inside the first tank portion 4 in a state where the first tank portion 4 made of resin and the upper peripheral edge 50 are connected to the first tank portion 4. And a second tank portion 5 made of resin that forms the lower chamber 51. The first tank portion 4 and the second tank portion 5 form a coupling portion in which the lower end peripheral portion 40 and the upper end peripheral portion 50 are welded to each other, and constitute the low temperature side tank 3.

According to this cooling device 100, the low temperature side tank 3 is formed by welding the first tank part 4 forming the upper chamber 41 and the second tank part 5 forming the lower chamber 51 capable of storing water to each other. The inner surface area that receives the pressure of the supercharged air in one tank portion can be reduced. In particular, since the length in the vertical direction can be reduced for each tank part, it contributes to increasing the rigidity of the tank part. Thereby, compared with the case of one low temperature side tank for the upper chamber and the water reservoir chamber, the pressure resistance capability that one container should have can be greatly reduced.

For this reason, it is possible to suppress the pressure resistance required for each of the first tank portion 4 and the second tank portion 5. Therefore, it becomes possible to form the 1st tank part 4 and the 2nd tank part 5 with a resin material instead of a metal, and it can contribute to reduction of product cost. By forming the low temperature side tank of the aluminum material with a resin material, the weight can be reduced and the tank cost can be reduced. Furthermore, according to this cooling device 100, since the upper chamber 41 and the lower chamber 51 in the low temperature side tank 3 can be partitioned by the bottom plate portion 42 of the first tank portion 4, the partition plate can be placed on the low temperature side as in the prior art. It does not require a process to attach to the tank. The cooling device 100 can reduce the pressure receiving area of the tank and improve the assemblability.

Further, the water suction pipe 44 is made of the same resin material as that of the first tank part 4 and is integrally formed with the first tank part 4. According to this, the water suction pipe 44 and the 1st tank part 4 can be manufactured by one metal mold | die with a metal mold | die. For this reason, parts management man-hours and parts assembly man-hours can be reduced, and product costs can be reduced.

(Second Embodiment)
The second embodiment is different from the first embodiment in the coupling state of the water suction pipe 144 and the first tank portion 4. The configuration, operation, and effects not particularly described in the second embodiment are the same as those in the first embodiment, and only differences from the above-described embodiment will be described below.

As shown in FIG. 4, the water suction pipe 144 is made of a material different from that of the first tank portion 4, for example, a metal material. For example, the water suction pipe 144 is made of aluminum or an aluminum alloy.

The metal water suction pipe 144 is formed integrally with the first tank portion 4 by integrally molding different materials using a mold. For example, a water suction pipe 144, which is a metal molded product, is installed at a predetermined position in the mold, a resin is injected around the water suction pipe 144, and the water suction pipe 144 is wrapped with a molten resin and solidified. By integrating the metal product and the resin in this way, the water suction pipe 144 and the first tank portion 4 of the metal product can be formed with one component. Further, the water suction pipe 144 made of a metal material may be fixed to the first tank portion 4 in a state where the water suction tube 144 is press-fitted into a hole 142 a formed in the bottom plate portion 142 of the first tank portion 4.

According to the second embodiment, when the water suction pipe 144 made of a metal material is integrally formed with the first tank portion 4, the metal water suction pipe 144 and the resin first tank portion 4 are formed. Can be manufactured in one molded part by a mold. For this reason, the number of parts assembling steps can be reduced, and the product cost can be suppressed. Further, since the water sucking pipe 144 can be formed of metal, the shape of the water sucking pipe 144 that does not need to be considered for die cutting can be adopted, so that the water sucking pipe 144 giving priority to the sucking performance can be manufactured.

Further, when the water suction pipe 144 made of a metal material is fixed to the first tank portion 4 while being press-fitted into the hole 142 a of the first tank portion 4, it is not necessary to consider die cutting. Therefore, the degree of freedom regarding the shape of the water suction pipe 144 is high. As a result, the water suction pipe 144 can be formed in a shape that prioritizes the suction performance.

(Third embodiment)
3rd Embodiment differs in the coupling | bonding state of the water suction pipe 244 and the 1st tank part 4 with respect to 1st Embodiment. The configuration, operation, and effects not particularly described in the third embodiment are the same as those in the first embodiment, and only differences from the above-described embodiment will be described below.

As shown in FIG. 5, the water suction pipe 244 is a resin molded product formed of a resin material. The water suction pipe 244 may be formed of the same material as the first tank portion 4 or may be made of a different material. The bottom plate portion 142 and the water suction tube 244 are welded together in a state where the water suction tube 244 that is a resin molded product is inserted into the hole formed in the bottom plate portion 142. Therefore, the water suction pipe 244 and the first tank part 4 are integrally fixed by forming a welded part 142b welded to each other.

According to the third embodiment, the water suction pipe 244 is formed of a resin material and is integrally welded to the first tank portion 4. Compared to the case where the first tank portion 4 and the water suction pipe 244 are integrally formed, it is not necessary to consider die cutting. Thereby, the water suction pipe 244 can be formed in a shape giving priority to the suction performance.

(Other embodiments)
Note that the present disclosure is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present disclosure. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In addition, elements constituting each of the above embodiments are not necessarily essential except when clearly indicated as essential and when considered to be clearly essential in principle.

In each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the components are mentioned, particularly when it is clearly indicated that it is essential, and when it is clearly limited to a specific number in principle. Except for this, the numerical values of the constituent elements are not limited to a specific number. Further, in each of the above embodiments, the material, shape, positional relationship, etc. of the constituent elements are the above-described specific items unless otherwise specified and in principle limited to a specific material, shape, positional relationship, etc. It is not limited to examples.

In the above-described embodiment, the first tank portion 4 and the second tank portion 5 may be formed of a resin material that can be welded to each other. Therefore, it is not limited that the resin material of both tank parts is the same material.

In the above-described embodiment, the method of welding the first tank portion 4 and the second tank portion 5 to each other is not limited to any of vibration welding, hot plate welding, and laser welding.

Claims

A high temperature side tank (1) having an inflow part (10) into which supercharged air flows;
A core portion (2) that cools the supercharged air by heat exchange between the supercharged air that flows out of the high temperature side tank and circulates inside, and external air;
A low temperature side tank (3) having an outflow part (43) through which the supercharged air cooled in the core part flows out toward an external device;
Water suction pipes (44, 144, 244) provided so as to extend from the bottom (52) of the low temperature side tank to the inside of the outflow part,
The low temperature side tank is
A bottom plate part (42, 142) partially provided with a through hole (420), an upper end part (45) connected to the core part, and an upper chamber (41) formed inside. A first tank part (4) made of resin;
A second tank portion (5) made of resin that forms a lower chamber (51) positioned below the upper chamber in a state where the upper peripheral edge portion (50) is connected to the first tank portion. And
The cooling device in which the first tank part and the second tank part form a joint part (40, 50) welded to each other.
The cooling device according to claim 1, wherein the water suction pipe (44) is integrally formed with the first tank portion using the same resin material as the first tank portion.
The cooling device according to claim 1, wherein the water suction pipe (144) is formed of a metal material and is integrally formed with the first tank portion.
The water suction pipe (144) is made of a metal material,
2. The cooling device according to claim 1, wherein the water suction pipe is fixed to the first tank portion while being press-fitted into a hole portion (142 a) formed in the first tank portion.
The cooling device according to claim 1, wherein the water suction pipe (244) is formed of a resin material and is integrally welded to the first tank portion.