阅读说明：本技术 用于车辆的热交换器的管销组件 (Tube pin assembly for heat exchanger of vehicle ) 是由 李东映 尹圣日 河锡 于 2019-08-20 设计创作，主要内容包括：一种用于车辆的热交换器的管销组件,包括：壳体,具有废气流入的入口；多个管,设置在壳体内以提供废气流经的通道；和冷却销,设置在管之间以提供冷却剂流经的冷却剂通道,其中由多孔材料制成的泡沫金属设置在至少一个管内。(A tube pin assembly for a heat exchanger of a vehicle, comprising: a housing having an inlet into which exhaust gas flows; a plurality of tubes disposed within the housing to provide a passage through which exhaust gas flows; and a cooling pin disposed between the tubes to provide a coolant passage through which a coolant flows, wherein a metal foam made of a porous material is disposed within at least one of the tubes.)

1. A tube pin assembly for a heat exchanger of a vehicle, comprising:

a housing having an inlet into which exhaust gas flows;

a plurality of tubes disposed within the housing to provide a passage through which the exhaust gas flows; and

a cooling pin disposed between the tubes to provide a coolant passage through which a coolant flows,

wherein a metal foam made of a porous material is disposed within at least one of the tubes.

2. The pipe pin assembly of claim 1 wherein said pipe comprises:

a first tube having the metal foam disposed therein; and

a second tube comprising: a tube region in contact with the coolant and a cooling pin region of a bent structure disposed in the tube region.

3. The pipe pin assembly of claim 2 wherein the pipe region and the cooling pin region are integrally formed with one another.

4. A pipe pin assembly according to claim 1, wherein a partition is provided in the inlet to divide the inlet into a first inlet and a second inlet.

5. The pipe pin assembly of claim 4 wherein the first and second inlets are defined to have different open areas from one another.

6. A pipe-pin assembly according to claim 4,

wherein the tubes comprise a first tube having the metal foam disposed therein and a second tube having a cooling pin region of a bent configuration disposed therein,

wherein the first inlet flows the exhaust gas to the first pipe; and is

Wherein the second inlet flows the exhaust gas to the second pipe.

7. The pipe pin assembly of claim 6 wherein the first inlet is defined by an open area that is larger than the second inlet.

8. The pipe pin assembly of claim 6,

wherein a front end of the inlet is provided with a bypass valve for determining a flow passage of the exhaust gas, and

wherein the bypass valve is controlled in accordance with the temperature of the exhaust gas.

9. A pipe pin assembly according to claim 8, wherein the bypass valve is controlled such that the exhaust gas flows to the second inlet when the temperature of the exhaust gas is below a predetermined temperature.

10. The pipe pin assembly according to claim 8, wherein when the temperature of the exhaust gas is higher than a predetermined temperature, the bypass valve is fully opened such that the exhaust gas flows in proportion to an opening area of each of the first and second inlets.

11. A pipe pin assembly according to claim 8, wherein the bypass valve is controlled such that the exhaust gas flows to the first inlet when the temperature of the exhaust gas is above a predetermined temperature.

Technical Field

The present invention relates to a pipe pin assembly for a heat exchanger of a vehicle, and more particularly, to a pipe pin assembly for cooling exhaust gas by using a pipe containing a metal foam.

Background

The tubes and pins are used in various types of heat exchangers used to cool exhaust gases discharged from a vehicle engine. Generally, a tube is a plate type having a cavity therein, and a pin is a bent plate type. The heat exchanger cools the high-temperature exhaust gas flowing in the tubes by using a coolant flowing outside the tubes.

Generally, a flat pin and a wave pin (wavy pin) are applied to a heat exchanger and a cooling pin (cooler pin) of a vehicle. However, there is a problem in that the cooling performance of the flat pin, the corrugated pin, and the like deteriorates because the contact area of the exhaust gas is limited in area (i.e., not wide). In addition, there is a problem that welding is performed in order to dispose the cooling pin in the tube, which causes corrosion of the tube during welding and deteriorates durability of the tube.

The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art in this country.

Disclosure of Invention

The present disclosure provides a tube pin assembly for a heat exchanger of a vehicle, wherein the tube pin assembly includes: a tube comprising a metal foam.

An object of the present disclosure is to provide a pipe pin assembly capable of adjusting the degree of cooling of exhaust gas according to the temperature of the exhaust gas.

A tube-pin assembly (tube-pin assembly) according to an embodiment of the present disclosure includes: a housing having an inlet into which exhaust gas flows; a plurality of tubes disposed within the housing to provide a passage through which exhaust gas flows; and a cooling pin disposed between the tubes to provide a coolant passage through which a coolant flows, a metal foam made of a porous material being disposed within at least one of the tubes.

According to an example, the tube comprises a first tube having a metal foam disposed therein and a second tube comprising: a tube region contacting the coolant and a cooling pin region of a bent structure disposed in the tube region.

According to an example, the tube region and the cooling pin region are integrally formed with each other.

According to an example, a partition for dividing the inlet into a first inlet and a second inlet is provided in the inlet.

According to an example, the first inlet and the second inlet are defined to have different opening areas from each other.

According to an example, the tube comprises: a first pipe having a metal foam disposed therein and a second pipe having a cooling pin area of a bent structure disposed therein, the first inlet flowing the exhaust gas to the first pipe and the second inlet flowing the exhaust gas to the second pipe.

According to an example, the first inlet is defined by an open area that is larger than the second inlet.

According to an example, the front end of the inlet is provided with a bypass valve for determining a flow passage of the exhaust gas, and the bypass valve is controlled according to the temperature of the exhaust gas.

According to an example, the bypass valve is controlled such that the exhaust gas flows to the second inlet when the temperature of the exhaust gas is below a predetermined temperature.

According to an example, when the temperature of the exhaust gas is higher than a predetermined temperature, the bypass valve is fully opened so that the exhaust gas flows in proportion to the opening area of each of the first and second inlets.

According to an example, the bypass valve is controlled such that the exhaust gas flows to the first inlet when the temperature of the exhaust gas is above a predetermined temperature.

According to an embodiment of the present disclosure, the interior of the at least one tube may be provided with a metal foam made of a porous material. When the first pipe containing the metal foam is applied to the heat exchanger, the performance of cooling the exhaust gas can be improved. In addition, since the metal foam is generally lighter than the pin structure provided in the tube, the overall weight of the tube pin assembly may be reduced. Therefore, when the tube pin assembly according to the embodiment of the present disclosure is applied to a heat exchanger, fuel efficiency of a vehicle may be improved.

The second pipe according to the embodiment of the present disclosure may be formed by bending one metal plate a plurality of times without performing a welding process. Therefore, problems of corrosion and deterioration in durability, which may occur according to the welding process, are not caused in the second pipe.

In addition, the tube and the pin according to an embodiment of the present disclosure may have an integrated structure. Accordingly, a separate assembly process may be omitted, and a process of manufacturing the tube may be simplified.

The above and other features of the present disclosure are discussed below.

Drawings

The above and other features of the present disclosure will now be described in detail with reference to certain exemplary embodiments thereof, which are illustrated in the accompanying drawings, given by way of illustration only, and thus not by way of limitation, and wherein:

FIG. 1 is a diagram illustrating a tube pin assembly according to an embodiment of the present disclosure.

Fig. 2 is a cross-sectional view illustrating an inlet according to an embodiment of the present disclosure.

Fig. 3 is a diagram illustrating a method for manufacturing an integrated tube (integral tube) according to an embodiment of the present disclosure.

Fig. 4 is a diagram illustrating a method for controlling a bypass valve when exhaust gas is low temperature according to an embodiment of the present disclosure.

Fig. 5 is a diagram illustrating a method for controlling a bypass valve when exhaust gas is high temperature according to an embodiment of the present disclosure.

It should be understood that the drawings are not necessarily to scale, presenting a somewhat simplified representation of various preferred features illustrative of the basic principles of the disclosure. The specific design features of the present disclosure, including specific dimensions, orientations, locations, and shapes for example, as disclosed herein are determined in part by the particular intended application and use environment.

In the drawings, like reference numerals designate identical or equivalent parts of the present disclosure throughout the several views.

Detailed Description

It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein include a broad range of motor vehicles, such as passenger vehicles including Sports Utility Vehicles (SUVs), buses, trucks, various commercial vehicles; ships including all kinds of boats and ships; spacecraft, etc.; and include hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuel derived from non-petroleum sources). As referred to herein, a hybrid vehicle is a vehicle having more than two power sources, e.g., gasoline-powered and electric-powered vehicles.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Throughout this specification, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements. In addition, the terms "unit", "device", "apparatus", and "module" described in the specification denote units for processing at least one function and operation, and may be implemented by hardware components or software components, and a combination thereof.

Further, the control logic of the present disclosure may be embodied as a non-transitory computer readable medium having executable program instructions embodied thereon for execution by a processor, controller, or the like. Examples of computer readable media include, but are not limited to, ROM, RAM, Compact Disc (CD) -ROM, magnetic tape, floppy disk, flash drive, smart card, and optical data storage device. The computer readable medium CAN also be distributed over a network coupled computer system so that the computer readable medium is stored and executed in a distributed fashion, such as over a telematics server or a Controller Area Network (CAN).

Advantages and features of the present disclosure and methods for achieving them will become apparent with reference to the following detailed description of embodiments taken in conjunction with the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art to which it pertains, and the disclosure will be limited only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Fig. 1 is a diagram illustrating a tube pin assembly according to an embodiment of the present disclosure.

Referring to fig. 1, a pipe pin assembly 1 may include a housing 100, a first pipe 200, a second pipe 300, a cooling pin 400, a bypass valve 500, and a control unit 600. The tube pin assembly 1 is applicable to various types of heat exchangers applied to vehicles. For example, the types of heat exchangers may include: a radiator for exchanging heat with air, a charge air cooler, a condenser, an automatic transmission fluid (automatic transmission fluid) for dissipating heat (or absorbing heat) by exchanging heat with a coolant, a heater, an exhaust gas recirculator, a cooler, and a transmission oil cooler.

The housing 100 may include an inlet end 110 defining an inlet 105 for receiving exhaust gas at the inlet end 110, and a body portion 130 connected to the inlet end 110 and defining a space in which the first and second tubes 200 and 300 are disposed. The inlet end 110 may be connected to the exhaust line 50, with exhaust gas flowing through the exhaust line 50 to the king pin assembly 1. The housing 100 may include a discharge port (not shown) through which the exhaust gas is discharged.

The first pipe 200 may include a metal foam 210 made of a porous material, and the pipe 230 defines a space in which the metal foam 210 is disposed. The first tube 200 may be provided in plurality. The first pipe 200 may be a passage through which exhaust gas flows, and the outside of the first pipe 200 may be a coolant passage through which coolant flows. Therefore, heat exchange of the exhaust gas may be performed in the first pipe 200.

The metal foam 210 may have a cell structure containing a solid metal, in which a majority of the volume is composed of gas filled pores. The metal foam 210 may include a large number of cells, and the size of the cells may range from about 0.05mm to about 1mm, or may be greater than about 0.1 mm. For example, the porosity of the metal foam 210 may be greater than or equal to 0.9, and its density may be from 0.2g/cm³To 0.4g/cm³. Accordingly, the metal foam 210 may be significantly lighter than the tube 230, and the porous structure may be filled with air therein, so that sound insulation and sound insulation properties may be excellent. In addition, foamed metal210 may have a volume per unit of 790m²/m³To 2740m²/m³And thus has a large contact area with the tube 230. Since the metal foam 210 of the present disclosure generally has a larger contact area with the tube 230 compared to the bent pin structure provided in the tube 230, the heat transfer coefficient of the first tube 200 is higher than that of a general tube. As a result, the first pipe 200 may be more satisfactory in terms of the cooling performance of the exhaust gas than a general pipe.

The second tube 300 is an integral tube and may include a cooling pin region (not shown) and a tube region (not shown). The structure of the second tube 300 will be described later. The second tube 300 may be provided in plurality. The second pipe 300 may be a passage through which exhaust gas flows, and the outside of the second pipe 300 may be a coolant passage through which coolant flows. Therefore, heat exchange of the exhaust gas may be performed in the second pipe 300.

The first tube 200 may have a greater heat transfer coefficient than the second tube 300. This is because the inside of the first pipe 200 is provided with the metal foam 210, but the inside of the second pipe 300 is provided with the cooling pin region (not shown) having a bent structure. That is, the contact area between the tube 230 and the metal foam 210 may be greater than the contact area between the cooling pin region (not shown) and the tube region (not shown).

The first tube 200 may be disposed closer to the upper end than the second tube 300, based on the orientation of the tube pin assembly 1 when installed in a vehicle. The arrangement relationship of the first pipe 200 and the second pipe 300 is to guide the exhaust gas having a temperature higher than the atmospheric temperature to flow toward the first pipe 200 instead of the second pipe 300. However, the relative arrangement between the first tube 200 and the second tube 300 may not be particularly limited thereto.

The cooling pins 400 may be disposed between the first tubes 200, between the second tubes 300, and between the first and second tubes 200 and 300 adjacent to each other. The cooling pin 400 may continuously maintain the interval between the first tubes 200, between the second tubes 300, and between the first and second tubes 200 and 300 adjacent to each other. The cooling pin 400 may be a channel through which a coolant flows. The cooling pin 400 may be formed by bending a single plate into a zigzag shape.

The bypass valve 500 may be disposed in the exhaust line 50 that flows exhaust gas to the dowel assembly 1. The bypass valve 500 may control an opening direction and an opening amount (opening amount) based on the temperature of the exhaust gas.

The control unit 600 may control the opening direction and the opening amount of the bypass valve 500 based on the temperature of the exhaust gas. The control unit 600 may be an Electronic Control Unit (ECU) installed in a vehicle. A temperature sensor 550 for measuring the temperature of the exhaust gas may be provided at the front end of the pipe pin assembly 1, and the control unit 600 may control a passage through which the exhaust gas flows according to whether the temperature of the exhaust gas is higher or lower than a predetermined temperature. The predetermined temperature may vary according to design choice.

According to an embodiment of the present disclosure, the interior of at least one of the tubes 200, 300 may be provided with a metal foam 210 made of a porous material. That is, when the first pipe 200 including the metal foam 210 is applied to a heat exchanger, the cooling performance of the exhaust gas may be improved. In addition, since the metal foam 210 is generally lighter than the pin structure provided in the tube 230, the overall weight of the tube pin assembly 1 may be reduced. Therefore, when the first tube 200 is applied to the heat exchanger, fuel efficiency of the vehicle may be improved.

Fig. 2 is a cross-sectional view illustrating an inlet according to an embodiment of the present disclosure. Fig. 2 is a sectional view taken along line a-a' in fig. 1.

Referring to fig. 1 and 2, a partition 108 may be provided to divide the inlet 105 into a first inlet 105a and a second inlet 105 b. The partition 108 may divide the passage receiving the exhaust gas into two passages. For example, the exhaust gas flowing through the first inlet 105a may flow into the first pipe 200, and the exhaust gas flowing through the second inlet 105b may flow into the second pipe 300. The first inlet 105a and the second inlet 105b may have different opening areas from each other. For example, the first inlet 105a may be defined as having a larger opening area than the second inlet 105 b.

The fluidity of the exhaust gas in the first pipe 200 may be lower than that of the exhaust gas in the second pipe 300 because the metal foam 210 having a large porosity is provided in the first pipe 200. Accordingly, the differential pressure within the first tube 200 may be greater than the differential pressure within the second tube 300. Specifically, a differential pressure between a portion of the first tube 200 adjacent to the inlet 105 and a portion of the first tube 200 adjacent to the outlet (not shown) may be greater than a differential pressure between a portion of the second tube 300 adjacent to the inlet 105 and a portion of the second tube 300 adjacent to the outlet (not shown). In a state where the bypass valve 500 has been fully opened, the amount of exhaust gas discharged toward the second pipe 300 having a relatively small differential pressure may be greater than the amount of exhaust gas discharged toward the first pipe 200. That is, the exhaust gas flows into a region where the differential pressure is relatively small. Since the first inlet 105a has a larger opening area than the second inlet 105b, the amounts of the exhaust gas flowing into the first inlet 105a and the second inlet 105b may be similar to each other in a state where the bypass valve 500 has been fully opened. That is, the partition 108 according to an embodiment of the present disclosure may have a configuration such that the first inlet 105a and the second inlet 105b are opened with different areas. Therefore, in the state where the bypass valve 500 is fully opened, the amount of the exhaust gas flowing into each of the first and second pipes 200 and 300 can be made similar.

Fig. 3 is a diagram illustrating a method for manufacturing an integrated tube according to an embodiment of the present disclosure. In particular, fig. 3 relates to a method for manufacturing the second tube 300 of fig. 1.

Referring to fig. 3, a plate-shaped metal plate 300a may be provided. First, the metal plate 300a may be bent so as to be bent

The shape structure is continuous. Second, one end of the bent metal plate 300b may be bent to surroundA shape bending structure. The second pipe 300 may be formed by brazing bonding without using a welding process.

The second tube 300 may include a cooling pin region 310 in which to bend

The configuration of the shape is continuous and the tube region 330 surrounds the cooling pin region 310. The cooling pin area 310 may contact the exhaust gas, the inner surface of the tube area 330 may contact the exhaust gas, and the outer surface of the tube area 330 may contact the coolant. That is, the outer surface of the tube region 330 may contact the cooling pin 400.

The second tube 300 according to an embodiment of the present disclosure may be formed by bending one metal plate a plurality of times without performing a welding process. Therefore, the problems of corrosion and durability deterioration caused by the conventional welding process are not significant in the second pipe 300.

In addition, the second tube 300 according to an embodiment of the present disclosure may have an integral structure, not a structure in which the cooling pin region 310 and the tube region 330 are separately formed and then coupled. Accordingly, a separate assembly process may be omitted, and the process of manufacturing the second tube 300 may be simplified.

Fig. 4 is a diagram for explaining a method of controlling a bypass valve when exhaust gas is low temperature according to an embodiment of the present disclosure.

Referring to fig. 1 and 4, the opening direction of the bypass valve 500 may be controlled based on the temperature of the exhaust gas flowing into the pipe pin assembly 1. When the temperature of the exhaust gas is lower than a predetermined temperature, the control unit 600 controls the bypass valve 500 to flow the exhaust gas to the second inlet 105 b. The exhaust gas flowing through the second inlet 105b flows into the second pipe region 350 in which the second pipe 300 is disposed. Due to the difference in heat transfer coefficient, the cooling performance of the second tube 300 may be lower than that of the first tube 200. However, when the temperature of the exhaust gas is lower than the predetermined temperature, it may not be necessary to excessively cool the exhaust gas. That is, when the temperature of the exhaust gas is lower than the predetermined temperature, the necessity of cooling the exhaust gas may be low.

Fig. 5 is a diagram for explaining a method for controlling a bypass valve when exhaust gas is high temperature according to an embodiment of the present disclosure.

Referring to fig. 1 and 5, the opening direction of the bypass valve 500 may be controlled based on the temperature of the exhaust gas flowing into the pipe pin assembly 1. The control unit 600 controls the bypass valve 500 such that the exhaust gas may flow only to the first inlet 105a, or to the first inlet 105a and the second inlet 105b when the temperature of the exhaust gas is higher than a predetermined temperature. Exhaust gas flowing through the first inlet 105a may flow into the first pipe region 250 in which the first pipe 200 is disposed.

For example, when the temperature of the exhaust gas is higher than a predetermined temperature, the bypass valve 500 is fully opened so that the exhaust gas may flow into the first and second pipes 200 and 300 through the first and second inlets 105a and 105 b. At this time, the exhaust gas may uniformly flow into the first and second pipe regions 250 and 350 based on the areas of the opening degrees of the first and second inlets 105a and 105b and the differential pressure between the first and second pipes 200 and 300.

When the temperature of the exhaust gas is higher than a predetermined temperature, it may be highly desirable to cool the exhaust gas. Accordingly, the control unit 600 may flow the exhaust gas to the side of the first pipe 200 having relatively excellent cooling performance, or flow the exhaust gas to the first pipe 200 and the second pipe 300. As the exhaust gas flows to the first pipe 200 side, or the exhaust gas flows to the first pipe 200 and the second pipe 300, the exhaust gas may be cooled at a lower temperature than when the exhaust gas flows only to the second pipe 300 side.

As described above, although the embodiments of the present disclosure have been described with reference to the accompanying drawings, those skilled in the art to which the present disclosure pertains will appreciate that other specific forms can be implemented without changing the technical spirit or essential features thereof. It is therefore to be understood that the above described embodiments are illustrative and not restrictive in all respects.