KR102599202B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, comprising: a case having an accommodating space therein and header joints formed on both open sides; a plurality of flow path plates provided inside the case and each forming a flow path through which coolant and air flow by stacking; and a pair of headers respectively inserted into and joined to the header fitting portion of the case; The header includes an opening penetrating both sides on the inside of the frame, and a support part connecting the inside of the frame part, wherein the support part is formed in a twisted form at both ends connected to the frame part. This relates to a heat exchanger that can reduce the flow resistance of air passing through the header and secure sufficient internal pressure performance of the header against the pressure or external force of the air passing inside.

Description

Heat exchanger {Heat exchanger}

The present invention relates to a heat exchanger that can cool air compressed at high temperature and pressure by a supercharger to increase engine output.

Among heat exchangers, the intercooler is a device that cools air compressed at high temperature and pressure by a supercharger to increase engine output.

The temperature of the air rapidly compressed by the supercharger becomes very high, causing the volume to expand and the oxygen density to decrease, resulting in a decrease in charging efficiency in the cylinder. Therefore, the intercooler cools the high-temperature air compressed in the supercharger, thereby increasing the intake efficiency of the engine cylinder and improving combustion efficiency to increase fuel efficiency.

Intercoolers that play this role can be divided into water-cooled and air-cooled types depending on the cooling method. Among these, the water-cooled intercooler 10 is similar in principle to the air-cooled intercooler, but differs in that compressed air is cooled using vehicle coolant or water instead of external air when cooling the intercooler through which high-temperature air passes. .

The water-cooled intercooler 10 shown in FIG. 1 includes a first header tank 20 and a second header tank 30 formed in parallel and spaced apart by a certain distance; A first inlet pipe 40 through which air flows in and a first outlet pipe 50 through which air is respectively formed in the first header tank 20 or the second header tank 30; a plurality of tubes (60) fixed at both ends to the first header tank (20) and the second header tank (30) to form an air passage; and a fin 70 interposed between the tubes 60; a cover member 80 that accommodates the assembly of the tube 60 and the fin 70 and is open on one side and the other side where one end of the tube 60 is located; and a second inlet pipe 41 through which the coolant flows and a second outlet pipe 51 formed on one side of the cover member 80 through which the coolant flows; It is formed including.

In addition, on the contrary, the coolant passes through the inside of the tube, and the heat exchanger core, which is an assembly of header tanks, tubes, and fins, is placed on the inside and a case is formed to surround the core, so that air passes through the inside of the case and the core The air may be configured to be cooled by.

However, a water-cooled intercooler must have sufficient pressure resistance performance to prevent it from being deformed or damaged by external forces or the pressure of coolant and air passing inside. In particular, the header constituting the header tank must have an opening to allow air to pass through, so it must be formed in a structure that can reduce resistance to air flow and at the same time have sufficient pressure resistance performance.

KR 10-1116844 B1 (2012.02.08)

The present invention was created to solve the problems described above. The purpose of the present invention is to reduce the flow resistance of air passing through the header and to provide sufficient internal pressure performance of the header against the pressure or external force of air passing inside. The goal is to provide a heat exchanger that can be secured.

The heat exchanger of the present invention for achieving the above-described object includes a case 100 having an accommodating space formed therein and open on both sides; A plurality of flow path plates 200 provided inside the case 100 and each forming a flow path through which coolant and air flow by stacking; and a pair of headers 300 coupled to both open sides of the case 100; It includes an opening 330 penetrating both sides of the header 300 on the inside of the frame 310, and a support 320 connecting the inside of the frame 310. , the support portion 320 may be formed in a twisted form with connection portions 321 at both ends connected to the frame portion 310.

Additionally, the support portion 320 may be formed parallel to the direction of air flow.

Additionally, the support portion 320 may be formed as a flat plate portion 322 with a width (w) wider than the thickness (t) between the connecting portions 321 on both sides.

Additionally, the flat portion 322 of the support portion 320 may be formed perpendicular to the plane formed by the frame portion 310.

Additionally, the frame side and the flat side of the connection portion 321 may be formed perpendicular to each other.

Additionally, the flat portion 322 of the support portion 320 may be formed to be inclined to the plane formed by the frame portion 310.

Additionally, the connection portion 321 of the support portion 320 may be formed in a portion connected to the frame portion 310 in a width (w) direction along the direction in which the frame portion 310 is formed.

Additionally, the support portion 320 may be formed integrally with the frame portion 310.

Additionally, the connection portions 321 on both sides of the support portion 320 may be twisted in opposite directions.

In addition, the support parts 320 are composed of a plurality of supports and are arranged to be spaced apart from each other. Some of the plurality of support parts 320 have connection parts 321 twisted in one direction, and the rest have a twisted shape in the other direction. It can be.

Additionally, the direction in which the connecting portions 321 of the supporting portions 320 are twisted may be symmetrical with respect to the center where the supporting portions 320 are arranged.

Additionally, the support portion 320 may be disposed at a position corresponding to the flow path plates 200.

In addition, the support portion 320 is formed of a flat plate portion 322 with a width (w) wider than the thickness (t) between the connecting portions 321 on both sides, and the flat portion 322 has a flow path. It may be formed so as not to block the air passage between the plates 200.

In addition, it may further include a plurality of fins 400 interposed in the air passage between the passage plates 200.

In addition, header matching portions 110-1 and 110-2 are formed on both open sides of the case 100, and the pair of headers 300 have the header matching portions 110-1 and 110-2, respectively. ) can be inserted and combined.

The support portion connecting the frame portion of the header of the present invention is formed in a twisted form, which has the advantage of being very easy to manufacture in a form in which the support portion is formed integrally with the frame portion.

In addition, there is an advantage in that the flow resistance of the air passing through the header can be reduced and sufficient internal pressure performance of the header can be secured against the pressure or external force of the air passing inside.

Figure 1 is an exploded perspective view showing a conventional water-cooled intercooler.
Figures 2 and 3 are an assembled perspective view and an exploded perspective view showing a heat exchanger according to an embodiment of the present invention.
Figures 4 and 5 are an exploded perspective view and an assembled perspective view showing the stacked structure of flow path plates and fins in a heat exchanger according to an embodiment of the present invention.
Figure 6 is a front view showing a heat exchanger according to an embodiment of the present invention.
FIG. 7 is a cross-sectional view taken in the direction AA' of FIG. 6.
Figure 8 is a cross-sectional view taken in the direction BB' of Figure 6.
9 and 10 are perspective views showing a support portion formed on a header in a heat exchanger according to an embodiment of the present invention.

Hereinafter, the heat exchanger of the present invention having the above-described configuration will be described in detail with reference to the attached drawings.

Figures 2 and 3 are assembled and exploded perspective views showing a heat exchanger according to an embodiment of the present invention, and Figures 4 and 5 show a stacked structure of flow plates and fins in a heat exchanger according to an embodiment of the present invention. This is an exploded perspective view and an assembled perspective view. In addition, Figure 6 is a front view showing a heat exchanger according to an embodiment of the present invention, and Figures 7 and 8 are a cross-sectional view in the direction AA' and a cross-sectional view in the direction BB' of Figure 6.

As shown, a heat exchanger according to an embodiment of the present invention may be largely composed of a case 100, a plurality of flow path plates 200, and a pair of headers 300. Although not shown, a tank may be coupled to each of the pair of headers 300 so as to form a space within which air can flow. At this time, the tank may be formed in the form of a container with the side facing the header open, and the tank may have an inlet through which air flows in and an outlet through which air is discharged.

Case 100 may be composed of a first member 100-1 and a second member 100-2, and the first member 100-1 and the second member 100-2 are combined to form an internal structure. An accommodation space may be formed. And the case 100 has header fitting parts 110-1 and 110-2 formed at both ends where the first member 100-1 and the second member 100-2 are joined, so that the header fitting parts 110 The header 300 can be inserted and accepted at -1, 110-2). Here, the case 100 may be formed in the form of a square tube in the body (130-1, 130-2), and the header fitting portion (110) formed on both open ends of the body (130-1, 130-2). -1, 110-2) may be formed in a form in which both ends of the body are expanded outward.

The plurality of flow path plates 200 may be stacked in the height direction and joined, and after being stacked, they may be joined by brazing or the like to form a coolant flow path through which coolant flows and an air flow path through which air flows, respectively. As shown as an example, the channel plates 200 have holes penetrating the top and bottom on both sides in the longitudinal direction, and the periphery of the hole protrudes toward the air flow path to form a cup portion 202. That is, the cup portion 202 is formed in the shape of a cup with a hole in the bottom, and may be concave on the surface toward the coolant passage with respect to the plate 201 and protrude convexly on the surface toward the air passage. In addition, an inflow blocking portion 203 and a side support portion 204 are formed to block the periphery of the cup portion 202 at a position close to the cup portion 202, so that air flows toward the cup portion 202 by the inflow blocking portion 203. may be blocked and the pin 400 may be supported by the side support 204. That is, when high-temperature air flows into the air passage, which is the space where the fins 400 between the passage plates 200 are arranged on one side in the longitudinal direction, the air flows toward the cup portion 202 by the inflow blocking portion 203. Since air cannot flow in, air can flow in toward the fins 400 disposed on both sides of the cup portion 202 in the width direction and flow in the longitudinal direction. Thus, by stacking a plurality of flow plates 200, an inlet tank portion 210 through which coolant flows in can be formed on one side in the longitudinal direction, and an outlet tank portion 220 through which coolant is discharged can be formed on the other side. In addition, the flow path plate 200, for example, is formed as a single tube in which two flow path plates are stacked and joined to face each other to form a coolant flow path inside, and a corrugated fin 400 is interposed between the tubes. It can be joined to a tube, and the empty space between the tubes can be formed as an air channel through which air flows. 4 and 5 show an assembly in which pins 400 are stacked between two flow path plates 200, and air flows between the two flow path plates 200 on which the fins 400 are placed. A euro can be formed. In addition, a plurality of assemblies as described above may be stacked to form an assembly in which passage plates and pins are stacked and assembled as shown in FIG. 3 . In addition, the shape of the fin is not shown in FIGS. 2 and 3, and only a portion of the fin 400 is shown in FIG. 6. However, as described above and in the structure shown, the fins are arranged in a uniform manner. It can be.

The header 300 is a part that is coupled to the tank as described above to form a space where air can flow inside, and the header 300 is connected to the header fitting portions 110-1 and 110-2 on both sides of the case 100. ) can be inserted into each and then joined by brazing, etc. The header 300 is formed in the form of a square frame 310 and has an opening 330 penetrating both sides in the longitudinal direction on the inside, and the opening 330 is an air channel formed by stacking flow passage plates 200. can be connected with And the header 300 may be formed with support parts 320 that connect and support the inside of the frame 310. Additionally, the support portion 320 may be formed to be spaced apart from the plurality of flow path plates 200.

Accordingly, the coolant flowing into the coolant inlet portion 131-2 formed in the second member 100-2 of the case 100 flows to the inlet tank portion 210 formed by stacking the flow path plates 200 to the flow path plate. The coolant outlet portion 131- formed in the second member 100-2 of the case 100 passes through the coolant flow path formed by (200) and gathers at the outlet tank portion 220 formed by stacking flow path plates 200. 1) can be discharged. In addition, the air may flow from one header 300 toward the other header, and the air passes through the opening 330 of the longitudinal one header 300 and the air flow path between the flow path plates 200 to the longitudinal other header. It may flow through the opening 330 of 300.

Here, the header 300 is composed of a frame part 310 with an opening 330 and a plurality of support parts 320, and the support parts 320 have both ends in the width direction facing each other in the frame part 310. It can be formed in a connected form. Additionally, the support portion 320 may include twisted connection portions 321 formed at both ends of the flat plate portion 322. At this time, the flat portion 322 of the support portion 320 may be arranged in a direction parallel to the longitudinal direction, which is the direction of air flow, and connection portions 321 are formed at both ends of the flat portion 322 in the width direction of the heat exchanger. The flat plate portion 322 may be connected to the frame portion 310 by the connecting portion 321. That is, the support portion 320 is formed integrally with the frame portion 310 so as to be parallel to the plane formed by the frame portion 310, and then the portion corresponding to the flat portion 322 is held and twisted to form a flat portion of the support portion 320 ( 322) may be erected in a direction perpendicular to the plane formed by the frame portion 310, and the connection portions 321 connected to both ends of the flat portion 322 may be formed in a twisted form.

Therefore, the heat exchanger of the present invention has the advantage that it is very easy to manufacture because the support part connecting the frame part of the header is formed in a twisted form, and the support part is formed integrally with the frame part. In addition, the flow resistance of the air passing through the header can be reduced and sufficient internal pressure performance of the header can be secured against the pressure of the air passing inside or external force.

Hereinafter, the detailed configuration of the support portion 320 of the header 300 will be described in detail.

9 and 10 are perspective views showing a support portion formed on a header in a heat exchanger according to an embodiment of the present invention.

As shown, the support portion 320 may be formed as a flat plate portion 322 with a width (w) wider than the thickness (t) between the connecting portions 321 on both sides. That is, sufficient structural strength can be secured by the flat plate portion 322.

Additionally, the flat portion 322 of the support portion 320 may be formed perpendicular to the plane formed by the frame portion 310. That is, as shown, the flat plate portion 322 is arranged parallel to the longitudinal direction perpendicular to the surface formed by the frame portion 310 to minimize flow resistance to air passing through the opening 330. Here, the connection parts 321, which are both ends of the support part 320, may be formed perpendicular to each other on the frame side, which is the part connected to the frame part 310, and the flat side, which is the part connected to the flat plate.

Additionally, the flat portion 322 of the support portion 320 may be formed to be inclined to the plane formed by the frame portion 310. Although not shown, an inlet or outlet through which air flows in or out may be formed in a tank that is combined with the header 300 to form a space where air flows inside. The direction of the inlet or outlet or the shape of the tank may be formed. Accordingly, the direction in which air flows toward the opening 330 of the header 300 may be formed in an inclined direction with respect to the longitudinal direction, so the angle at which the flat plate portion 322 is inclined may be formed to be inclined according to the direction of air flow. You can.

Additionally, the connection portion 321 of the support portion 320 may be formed in a portion connected to the frame portion 310 in a width (w) direction along the direction in which the frame portion 310 is formed. That is, since the support portion 320 can be formed into a twisted shape by holding and twisting the flat plate portion 322, the connecting portion 321 is formed in the width (w) direction of the frame portion connected to the frame portion 310. It may be formed along the portion 310.

Additionally, the support portion 320 may be formed integrally with the frame portion 310. More specifically, one flat plate is pressed to form the shape of the frame portion 310 and the opening 330, and the portion remaining between the openings 330 and connected to the frame portion 310 is held and twisted to form a support portion. (320) can be formed. Thus, the support part 320 can be formed integrally with the frame part 310, and since there is no need to form and couple the support part 322 separately from the frame part 310, manufacturing is easy and pressure resistance can be improved.

Additionally, the connection portions 321 on both sides of the support portion 320 may be twisted in opposite directions. That is, since the support part 320 can be formed by holding and twisting the flat part 322, the connection parts 321 on both sides of one support part 320 can be formed in a form twisted in opposite directions.

In addition, the support parts 320 are composed of a plurality of supports and are arranged to be spaced apart from each other. Some of the plurality of support parts 320 have connection parts 321 twisted in one direction, and the remaining support parts 320 have connection parts 321. ) may be formed in a twisted form in the other direction. That is, as shown, there may be support parts 320 twisted clockwise and support parts 320 twisted counterclockwise. Therefore, when holding and twisting the flat plate portion 322 to form the support portions 320, twisting force is applied in both directions, thereby preventing the frame portion 310 from being deformed to one side.

Additionally, the direction in which the connecting portions 321 of the supporting portions 320 are twisted may be symmetrical with respect to the center where the supporting portions 320 are arranged. That is, if the direction in which the support parts 320 are twisted is formed symmetrically with respect to the central part, it is possible to prevent the support parts from being deformed to only one side due to pressure acting from the inside to the outside of the frame part 310. there is.

Additionally, the support portion 320 may be disposed at a position corresponding to the flow path plates 200. As shown, the support part 320 is formed along the width direction of the heat exchanger, and is arranged so that the flat part 322 of the support part 320 is located at the height where the flow path plates 200 are placed when the heat exchanger is viewed from the front. It can be. Here, two flow path plates 200 are joined to form a tube with a coolant flow path, and a fin 400 is interposed in the air flow path, which is the space between the tubes, so that the fin 400 can be joined to the tube. . At this time, the thickness of the flat part 322 is formed to be thinner or the same as the thickness of the tube, so that the flat part 322 can be placed in the area where the tube is arranged in the height direction, and the fin 400 is arranged in the height direction. The flat plate portion 322 may not be disposed in the area. Therefore, the flat part 322 does not block the part through which air flows, thereby reducing air flow resistance.

Additionally, as an example, the first member 100-1 and the second member 100-2 constituting the case 100 may each be bent into an L shape and formed as one piece. That is, the first member 100-1 can be bent into an L shape so that the body 130-1 and both header joints 110-1 are formed as one piece, and similarly, the second member 100-2 By bending into an L shape, the body 130-2 and the header joints 110-2 on both sides may be formed as one body. Here, the second member 100-2 may be formed by rotating the first member 100-1 by 180 degrees. That is, the first member 100-1 and the second member 100-2 may have the same shape, but the arrangement may be rotated 180 degrees. Therefore, since the first member and the second member are the same, the number of parts can be reduced. And the case 100 may be joined by joining the first member 100-1 and the second member 100-2 at adjacent ends. In addition, the header joints 110-1 and 110-2 of the first member 100-1 and the second member 100-2 are bent outward at both ends of the bodies 130-1 and 130-2. It consists of first bent parts (111-1, 111-2) and second bent parts (121-1, 121-2) bent in the longitudinal direction at the ends of the first bent parts (111-1, 111-2). It can be. At this time, the first bent portions 111-1 and 111-2 may be bent in a direction perpendicular to the body 130-1 and 130-2, and the second bent portions 121-1 and 121-2 may be bent in a direction perpendicular to the body 130-1 and 130-2. It may be bent outward in the longitudinal direction perpendicular to the first bent portion.

In addition, as shown, the first member 100-1 and the second member 100-2 constituting the case 100 have case coupling portions 120-1 and 120- with bent ends on one side adjacent to each other. 2) can be formed. That is, the right end of the first surface portion 130-1a, which is a horizontally disposed portion of the body 130-1 of the first member 100-1, is bent upward to form the case coupling portion 120-1. It can be formed, and the case coupling portion 120-1 of the first member 100-1 is a second surface portion ( It can be joined by bonding by surface contacting the inner surface of 130-2b). Likewise, the left end of the first surface portion 130-2a, which is a horizontally disposed portion of the body 130-2 of the second member 100-2, is bent downward to form the case coupling portion 120-2. It can be, and the case coupling portion 120-2 of the second member 100-2 is the second surface portion 130, which is a vertically disposed portion of the body 130-1 of the first member 100-1. -1b) It can be joined by bonding by surface contact with the inner surface.

In addition, the edge of the surface contact portion, which is the adjacent portion of the first member 100-1 and the second member 100-2, is formed in an angled shape, so that the first member 100-1 and the second member 100-2 -2) can be formed so that there is no empty space in the parts where they are adjacent to each other and joined. And both ends of the case coupling portion 120-1 of the first member 100-1 will be integrally formed in a form connected to the first bent portions 111-1 of the header molding portion 110-1. The corner portion where the case coupling portion 120-1 and the first bent portion 111-1 are connected may also be formed in an angled shape. Additionally, among the corner portions where the case coupling portion 120-1 and the body 130-1 meet, the portion adjacent to the first bent portion 111-1 may also be formed in an angled shape. Additionally, the second member 100-2 may be formed in the same shape as the first member.

In addition, in the header joints 110-1 and 110-2 of the case 100, the first bent portions 111-1 and 111-2 are the connection portions 111-1a and 111- of the corner portions bent in an L shape. 2a) may be formed, and the connection portions 111-1a and 111-2a may be formed integrally with the first bent portions 111-1 and 111-2 and the bodies 130-1 and 130-2. . That is, as shown, when the first member 100-1 and the second member 100-2 constituting the case 100 are formed in an L shape, the header fitting portions 110-1 and 110-2 ), the first bent portions 111-1 and 111-2 may also be formed in an L shape. At this time, the connecting portions 111-1a and 111-2a may be formed integrally with the first bent portions 111-1 and 111-2 and the bodies 130-1 and 130-2 by bending.

Additionally, the fin 400 may have louvers formed to penetrate both sides of the flat surface excluding the curved part forming the peaks and valleys.

The present invention is not limited to the above-described embodiments, and its scope of application is diverse, and anyone skilled in the art can understand it without departing from the gist of the invention as claimed in the claims. Of course, various modifications are possible.

100: case
100-1: First member
110-1: Header joint 111-1: First bent portion
112-1: second bent portion 111-1a: connection portion
120-1: Case joint 130-1: Body
130-1a: 1st side part 130-1b: 2nd side part
131-1: Coolant outlet
100-2: Second member
110-2: Header joint 111-2: First bent portion
112-2: second bent portion 111-2a: connection portion
120-2: Case joint 130-2: Body
130-2a: 1st side part 130-2b: 2nd side part
131-2: Coolant inlet
200: Euro plate
201: plate 202: cup portion
203: inflow blocking part 204: side support part
210: Inlet tank section 220: Outlet tank section
300: header 310: frame part
320: support part 321: connection part
322: Flat plate part 330: Opening
400: pin

Claims (15)

A case 100 with an accommodating space formed inside and open on both sides;
A plurality of flow path plates 200 provided inside the case 100 and each forming a flow path through which coolant and air flow by stacking; and
A pair of headers 300 coupled to both open sides of the case 100; It includes,
The header 300 has an opening 330 penetrating both sides of the frame 310, and a support 320 connecting the inside of the frame 310. The connection portions 321 at both ends connected to the frame portion 310 are formed in a twisted form,
The support portion 320 is formed of a flat plate portion 322 having a width (w) wider than the thickness (t) between the connecting portions 321 on both sides,
The frame side and the flat side of the connection portion 321 are formed perpendicular to each other,
The support portion 320 is a heat exchanger characterized in that it is formed to be spaced apart from the plurality of passage plates 200.
According to paragraph 1,
The support portion 320 is a heat exchanger characterized in that it is formed parallel to the direction of air flow.
delete According to paragraph 1,
A heat exchanger, wherein the flat portion 322 of the support portion 320 is formed perpendicular to the plane formed by the frame portion 310.
delete According to paragraph 1,
A heat exchanger, wherein the flat plate portion 322 of the support portion 320 is formed to be inclined to the plane formed by the frame portion 310.
According to paragraph 1,
The connection portion 321 of the support portion 320 is a heat exchanger characterized in that the width (w) direction of the connection portion connected to the frame portion 310 is formed along the direction in which the frame portion 310 is formed.
According to paragraph 1,
The support portion 320 is a heat exchanger characterized in that it is formed integrally with the frame portion 310.
According to clause 8,
A heat exchanger, wherein the connection portions 321 on both sides of the support portion 320 are twisted in opposite directions.
According to paragraph 1,
The support portions 320 are composed of a plurality of supports and are arranged to be spaced apart from each other, and some of the plurality of support portions 320 have connection portions 321 twisted in one direction, while others have a twisted connection portion 321 in the other direction. A heat exchanger with .
According to clause 10,
A heat exchanger, characterized in that the twisted direction of the connecting portions 321 of the supporting portions 320 is symmetrical with respect to the center where the supporting portions 320 are arranged.
According to paragraph 1,
A heat exchanger, wherein the support portion 320 is disposed at a position corresponding to the flow path plates 200.
According to clause 12,
The support portion 320 is formed of a flat plate portion 322 having a width (w) wider than the thickness (t) between the connecting portions 321 on both sides,
The flat portion 322 is a heat exchanger characterized in that it is formed so as not to block the air passage between the flow path plates 200.
According to paragraph 1,
A heat exchanger further comprising a plurality of fins (400) interposed in an air flow path between the flow path plates (200).
According to paragraph 1,
Header matching portions 110-1 and 110-2 are formed on both open sides of the case 100, and the pair of headers 300 are respectively connected to the header matching portions 110-1 and 110-2. A heat exchanger characterized in that it is inserted and coupled.