KR20240020481A - Airfoil corrugated plate heat exchanger - Google Patents

Abstract

An airfoil corrugated plate heat exchanger is disclosed. An airfoil corrugated plate heat exchanger according to an embodiment of the present invention includes a plate assembly formed by stacking a plurality of heat transfer plates, a first fixed plate coupled to one side of the plate assembly, and a first fixed plate coupled to the other side of the plate assembly, and a first fluid and a first fixed plate are coupled to the other side of the plate assembly. A plate heat exchanger including a second fixed plate through which two fluids enter and exit, wherein the heat transfer plate includes: a first distribution area formed at a first end and having a first distribution pattern; a second distribution region formed at the second end and having a second distribution pattern; a heat transfer area formed between the first distribution area and the second distribution area and having a heat transfer wrinkle pattern; a first port hole formed at the first end through which the first fluid flows; a second port hole formed at the second end through which the first fluid flows; a third port hole formed at the second end and connected to the second distribution area through which the second fluid flows; And it may include a fourth port hole formed at the first end and connected to the first distribution area through which the second fluid flows.

Description

Airfoil corrugated plate heat exchanger}

The present invention relates to an airfoil corrugated plate heat exchanger, and more specifically to a plate heat exchanger in which a heat transfer channel made of airfoil-shaped corrugations is formed.

A heat exchanger is a device designed to exchange heat between two or more fluids. Heat exchangers are used to exchange heat between different fluids for the purpose of cooling the fluid or heating to increase the temperature of the fluid.

Heat exchangers have applications in numerous industries such as power generation, heat recovery, food and beverage, chemical industry and electronics. Among them, plate heat exchangers are the most commonly used due to their advantages such as high thermal hydraulic performance, compact installation space, and expandability.

A plate heat exchanger fixes a plate assembly consisting of a plurality of thin, corrugated heat transfer plates stacked between a pair of fixed frames, and alternately flows a relatively high temperature fluid and a relatively low temperature fluid through heat transfer channels defined by the stacked heat transfer plates. It is a device that causes heat exchange between fluids by allowing them to flow.

A plate pack, in which a plurality of heat transfer plates are sequentially stacked to form a heat transfer channel, may be fixed between a pair of fixed frames using fastening means such as high-tensile fastening bolts.

At this time, a gasket is installed on the edge of the heat transfer plate, so that when the heat transfer plates are stacked, the two heat transfer plates come into close contact with each other with the gasket in between, thereby preventing leakage of fluid flowing through the heat transfer channel. In this structure, a relatively high-temperature fluid and a relatively low-temperature fluid can transfer heat through a heat transfer plate while flowing along independent heat transfer channels.

Korean Patent Publication No. 10-2009-0106521 (Publication date: 2009.10.09.)

One problem that the present invention seeks to solve is to provide an airfoil corrugated plate heat exchanger through which fluid can be uniformly distributed and flow in a heat transfer channel.

Another problem to be solved by the present invention is to provide an airfoil corrugated plate heat exchanger that can minimize the pressure drop occurring in the heat transfer channel.

Another problem to be solved by the present invention is to provide an airfoil corrugated plate heat exchanger formed with a simple structure.

In order to achieve the above object, the airfoil corrugated plate heat exchanger according to an embodiment of the present invention includes a plate assembly formed by stacking a plurality of heat transfer plates, a first fixed plate coupled to one side of the plate assembly, and the other side of the plate assembly. A plate heat exchanger including a second fixed plate coupled to and through which the first fluid and the second fluid enter and exit, wherein the heat transfer plate includes: a first distribution area formed at the first end and having a first distribution pattern; a second distribution region formed at the second end and having a second distribution pattern; a heat transfer area formed between the first distribution area and the second distribution area and having a heat transfer wrinkle pattern; a first port hole formed at the first end through which the first fluid flows; a second port hole formed at the second end through which the first fluid flows; a third port hole formed at the second end and connected to the second distribution area through which the second fluid flows; And it may include a fourth port hole formed at the first end and connected to the first distribution area through which the second fluid flows.

In addition, in order to achieve the above problem, the plate assembly of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention has heat transfer plates arranged in odd or even numbers centered on a rotation axis that passes through the center of one side and the rear side. It can be rotated 180 degrees and stacked.

In addition, in order to achieve the above problem, the heat transfer wrinkle pattern of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention is divided into an airfoil-shaped first wrinkle that protrudes upward and a lower portion based on the longitudinal center plane of the heat transfer plate. The protruding airfoil-shaped second wrinkles may be arranged alternately.

In addition, in order to achieve the above problem, the heat transfer wrinkle pattern of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention has a first continuous wrinkle in which the first wrinkle is continuous at least twice and a second wrinkle in which the first wrinkle is continuous at least twice. The second continuous wrinkles may be arranged alternately.

In addition, in order to achieve the above problem, the heat transfer wrinkle pattern of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention may be inclined to extend on both sides toward the first end or the second end with respect to the longitudinal center line of the heat transfer plate. there is.

In addition, in order to achieve the above object, the heat transfer plate of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention includes a first separation groove area formed between the first distribution area and the heat transfer area; And it may further include a second separation groove area formed between the second distribution area and the heat transfer area.

Additionally, in order to achieve the above object, the airfoil shape of the first wrinkle of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention may be formed differently from the airfoil shape of the second wrinkle.

In addition, in order to achieve the above problem, the airfoil shape of the first continuous wrinkle of the airfoil corrugated plate heat exchanger according to the embodiment of the present invention may be formed differently from the airfoil shape of the second continuous wrinkle.

In addition, in order to achieve the above problem, the plate assembly of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention has the first continuous wrinkles formed in different airfoil shapes, and the second continuous wrinkles The second wrinkles may be formed in different airfoil shapes.

In addition, in order to achieve the above problem, the plate assembly of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention has a length of the heat transfer wrinkle pattern of the heat transfer plate located at odd numbers and the heat transfer wrinkle pattern of the heat transfer plate located at even numbers. They may be formed to protrude in opposite directions based on the direction center plane.

According to the airfoil corrugated plate heat exchanger according to an embodiment of the present invention, the fluid can be uniformly distributed and flow in the heat transfer channel, so the heat transfer performance of the airfoil corrugated plate heat exchanger can be improved.

In addition, according to the airfoil corrugated plate heat exchanger according to an embodiment of the present invention, the pressure drop occurring in the heat transfer channel can be minimized, and thus the thermal hydraulic performance of the airfoil corrugated plate heat exchanger can be improved.

In addition, according to the airfoil corrugated plate heat exchanger according to an embodiment of the present invention, the airfoil corrugated plate heat exchanger can be formed with a simple structure, thereby reducing production and maintenance costs of the airfoil corrugated plate heat exchanger.

Figure 1 shows a perspective view of an airfoil corrugated plate heat exchanger according to an embodiment of the present invention.
Figure 2 shows an exploded perspective view of an airfoil corrugated plate heat exchanger according to an embodiment of the present invention.
Figure 3 shows a top view of the heat transfer plate of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention.
FIG. 4 schematically shows a cross section of the heat transfer plate along line AA′ of FIG. 3.
Figure 5 shows an enlarged cross-sectional view of a portion of the plate assembly of an airfoil corrugated plate heat exchanger according to an embodiment of the present invention.
Figure 6 shows a schematic conceptual diagram of the airfoil corrugation of the airfoil corrugated plate heat exchanger according to an embodiment of the present invention.
Figure 7 shows an enlarged cross-sectional view of a portion of the plate assembly of an airfoil corrugated plate heat exchanger according to another embodiment of the present invention.
Figure 8 shows a schematic conceptual diagram of the airfoil corrugation of an airfoil corrugated plate heat exchanger according to another embodiment of the present invention.
Figure 9 schematically shows types of airfoil shapes.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

However, in describing the present invention, descriptions of already known functions or configurations will be omitted to make the gist of the present invention clear.

The X, Y, and Z axes shown in the drawing are arbitrarily determined for the convenience of explanation and not for the purpose of limiting rights. The and the Z-axis is defined as indicating the upward and downward directions.

Each direction described below is based on this, except where otherwise specifically limited.

In the description and claims of the invention, directions such as up (up), down (bottom), left and right (lateral or lateral), anterior (forward, front), posterior (belly, rear), etc. are not intended to limit rights. For convenience of explanation, the relative positions between drawings and structures are set as a standard, and each direction described below is based on this, except where otherwise specifically limited.

Referring to Figures 1 to 6, the airfoil corrugated plate heat exchanger 1 according to an embodiment of the present invention includes a plate assembly 10 formed by stacking a plurality of heat transfer plates 100 and the plate assembly 10. A first fixing plate 200 coupled to one side (rear) and a second fixing plate 300 coupled to the other side (front) of the plate assembly 10 and through which the first fluid and the second fluid enter and exit. It relates to a plate heat exchanger (1).

The airfoil corrugated plate heat exchanger (1) has a structure in which a plate assembly (10) is coupled between a first fixed plate (200) and a second fixed plate (300).

The first fixing plate 200 and the second fixing plate 300 correspond to frames respectively coupled to both sides of the plate assembly 10.

The second fixing plate 300 is formed with a first port 310 and a second port 320 through which the first fluid can move, and a third port 330 and a fourth port through which the second fluid can move ( 340) can be formed.

The first fluid and the second fluid may be a material such as water or a refrigerant R410A, R32, R290, R134a, or CO2.

Hereinafter, the description will be based on the case where the first fluid is a fluid with a relatively higher temperature than the second fluid.

Referring to Figures 1 to 6, the heat transfer plate 100 includes a first distribution area 111 formed at the first end 110 and having a first distribution pattern 112; a second distribution area 121 formed at the second end 120 and having a second distribution pattern 122; a heat transfer area 130 formed between the first distribution area 111 and the second distribution area 121 and having a heat transfer wrinkle pattern 131; a first port hole formed in the first end 110 through which the first fluid flows; a second port hole formed in the second end 120 through which the first fluid flows; a third port hole formed at the second end 120 and connected to the second distribution area 121 through which the second fluid flows; And it may include a fourth port hole formed at the first end 110 and connected to the first distribution area 111 through which the second fluid flows.

The heat transfer plate 100 is a configuration in which heat exchange occurs between a first fluid and a second fluid, and a plurality of approximately rectangular plates can be stacked to form the plate assembly 10.

The heat transfer plate 100 has a first distribution area 111 formed at the first end 110 on the right side with respect to the heat transfer area 130, and a second distribution area 121 formed at the second end 120 on the left side. can be formed.

The heat transfer plate 100 may have a first port hole 113 and a fourth port hole 114 formed at the first end 110.

The heat transfer plate 100 may have a second port hole 123 and a third port hole 124 formed at the second end 120.

The first fluid may flow through the first port hole 113 and the second port hole 123 in any one of the longitudinal directions of the first heat transfer channel 11.

The second fluid may flow through the third port hole 124 and the fourth port hole 114 in any one of the longitudinal directions of the second heat transfer channel 12.

The first fluid and the second fluid may flow in the same direction or in opposite directions.

The heat transfer plate 100 may have a virtual center plane C extending in parallel between a virtual upper plane and a virtual lower plane.

The heat transfer plate 100 may have a virtual longitudinal center line (L) and a virtual rotation axis (I) passing through the center of one side and the rear side.

The number of heat transfer plates 100 stacked on the plate assembly 10 can be arbitrarily determined based on the design heat load of a specific application field.

The plate assembly 10 can adjust the number of heat transfer plates 100 according to the required design heat load.

Among the plurality of heat transfer plates 100 stacked on the plate assembly 10, the heat transfer plates 100 arranged in odd or even numbers may be stacked by rotating 180 degrees about the rotation axis I.

When the odd-numbered heat transfer plates 100 or even-numbered heat transfer plates 100 in the plate assembly 10 are stacked by rotating them 180 degrees around the rotation axis (I), the fluid flowing on the front and back of the heat transfer plates 100 The types can be different.

The plate assembly 10 may have a heat transfer channel formed between the plurality of heat transfer plates 100 that are stacked.

The heat transfer channel can be divided into a first heat transfer channel 11 through which a relatively high temperature first fluid moves and a second heat transfer channel 12 through which a relatively low temperature second fluid moves.

The first heat transfer channel 11 may be formed between the front of the odd-numbered heat transfer plates 100 and the back of the even-numbered heat transfer plates 100.

The second heat transfer channel 12 may be formed between the rear of the odd-numbered heat transfer plates 100 and the front of the even-numbered heat transfer plates 100.

A heat transfer channel may also be formed between the plate assembly 10 and the first fixing plate 200 or the second fixing plate 300.

The heat transfer plates 100 rotated 180 degrees around the rotation axis I and arranged in even numbers may have a second heat transfer channel 12 formed on the front and a first heat transfer channel 11 formed on the back.

The heat transfer plate 100 may be formed with a mounting groove 160 into which the gasket 400 is coupled.

The gasket 400 can maintain sealing between the heat transfer plates 100 even when the pressure and temperature of the first or second fluid change.

The mounting groove 160 forms a closed loop surrounding the fourth port hole 114, the first distribution area 111, the heat transfer area 130, the second distribution area 121, and the third port hole 124. can do.

The mounting groove 160 may further form a closed loop surrounding the first port hole 113 and a closed loop surrounding the second port hole 123.

Referring to Figures 1 to 6, the first distribution area 111 is a part for uniformly collecting or distributing the second fluid flowing between the fourth port hole 114 and the heat transfer area 130.

The first distribution area 111 may include a first distribution pattern 112 .

The shape of the first distribution pattern 112 may be formed so that the second fluid is uniformly collected or distributed in all paths connecting the fourth port hole 114 and the heat transfer area 130.

The first distribution pattern 112 may be formed so that the second fluid receives the same flow resistance in all paths connecting the fourth port hole 114 and the heat transfer area 130.

Referring to Figures 1 to 6, the second distribution area 121 is a part for uniformly collecting or distributing the second fluid flowing between the third port hole 124 and the heat transfer area 130.

The second distribution area 121 may include a second distribution pattern 122 .

The shape of the second distribution pattern 122 may be formed so that the second fluid is uniformly collected or distributed in all paths connecting the third port hole 124 and the heat transfer area 130.

The second distribution pattern 122 may be formed so that the second fluid receives the same flow resistance in all paths connecting the third port hole 124 and the heat transfer area 130.

Referring to Figures 1 to 6, the heat transfer plate 100 includes a first separation groove area 140 and a second distribution area 121 formed between the first distribution area 111 and the heat transfer area 130, and the heat transfer area ( It may further include a second separation groove area 150 formed between 130).

The first separation groove area 140 is a square planar groove formed between the first distribution area 111 and the heat transfer area 130.

The second fluid that has passed through the heat transfer area 130 or the first distribution area 111 may be temporarily collected or mixed in the first separation groove area 140.

The second fluid that arrives at the first separation groove area 140 may be uniformly distributed and flow into the heat transfer area 130 or the first distribution area 111.

The second separation groove area 150 is a square planar groove formed between the second distribution area 121 and the heat transfer area 130.

The second fluid that has passed through the heat transfer area 130 or the second distribution area 121 may be temporarily stored or mixed in the second separation groove area 150.

The second fluid arriving at the second separation groove area 150 may be uniformly distributed and flow into the heat transfer area 130 or the second distribution area 121.

Referring to FIGS. 1 to 6 and 9, the heat transfer area 130 is a part where most of the heat exchange between the first fluid and the second fluid takes place.

The heat transfer area 130 may be formed with a heat transfer wrinkle pattern 131 to increase the effective area and residence time in contact with the first and second fluids.

The heat transfer wrinkle pattern 131 is arranged so that first wrinkles 132 in the shape of an airfoil protruding upward and second wrinkles 133 in the shape of an airfoil protruding downward are alternately arranged with respect to the center plane (C). can be formed.

The airfoil shape refers to a streamlined shape similar to a vertically cut airplane wing, and the first wrinkle 132 and the second wrinkle 133 can use the upper half of the airfoil shape.

The heat transfer wrinkle pattern 131 can be created using various types of airfoil shapes, including early airfoil, laminar flow airfoil, later airfoil, circular arc airfoil, Clark 'Y' airfoil, and double wedge airfoil. , the angle of attack of the airfoil can take values between 0° and 90°.

The chord line of the airfoil may be located at the center plane (C) of the heat transfer plate 100.

The airfoil-shaped heat transfer wrinkle pattern 131 can increase the heat transfer rate, reduce sediment accumulation on the surface of the heat transfer area 130, and strengthen the structure of the heat transfer area 130.

The airfoil-shaped heat transfer wrinkle pattern 131 can generate turbulence in a large amount of fluid and destroy the boundary layer, thereby improving the effective area, residence time, and heat transfer coefficient.

The airfoil-shaped heat transfer wrinkle pattern 131 may contribute to increasing the heat transfer area and reducing the pressure drop in the heat transfer area 130 formed in a smooth curve.

The heat transfer wrinkle pattern 131 may be formed so that the first wrinkle 132 protrudes upward and the second wrinkle 133 protrudes downward based on the central plane C of the heat transfer plate 100.

The heat transfer wrinkle pattern 131 may be formed so that the leading edge of the second wrinkle 133 is connected to the trailing edge of the first wrinkle 132 based on the central plane C of the heat transfer plate 100.

Pitch (P) refers to the distance from the leading edge to the trailing edge of the first wrinkle 132 or the second wrinkle 133 in the center plane (C) of the heat transfer plate 100.

Depth (D) refers to the distance from the center plane (C) of the heat transfer plate 100 to the most protruding point of the first wrinkle 132 or the second wrinkle 133.

The airfoil shape of the first wrinkle 132 may be the same as or different from the airfoil shape of the second wrinkle 133.

When the airfoil-shaped heat transfer wrinkle pattern 131 is formed, fluid can be evenly mixed throughout the heat transfer area 130, and the pressure drop occurring due to friction in the heat transfer area 130 can be minimized.

The heat transfer wrinkle pattern 131 may be formed symmetrically on both sides with respect to the longitudinal center line (L) of the heat transfer plate 100.

The heat transfer wrinkle pattern 131 may be formed with both sides extending obliquely in the direction of the first end 110 or the second end 120 based on the longitudinal center line (L) of the heat transfer plate 100.

The heat transfer wrinkle pattern 131 is a chevron pattern and may be formed to have an inclination angle (θ) based on the longitudinal center line (L) of the heat transfer plate 100 and extend to both sides.

The inclination angle (θ) may have a value between 0° and 90°.

The spacing (G) of the heat transfer channels is based on the distance between the center planes (C) of a pair of adjacent heat transfer plates (100).

The first fluid or the second fluid can flow throughout the entire heat transfer area 130 through the first distribution area 111 and the second distribution area 121.

Referring to FIGS. 7 and 8, the heat transfer wrinkle pattern 131 includes a first continuous wrinkle 134 in which the airfoil-shaped first wrinkle 132 is continued two or more times and an airfoil-shaped second wrinkle 133. Two or more second continuous wrinkles 135 may be formed to be alternately arranged.

The airfoil shape of the first continuous wrinkle 134 may be the same as or different from the airfoil shape of the second continuous wrinkle 135.

The plurality of first wrinkles 132 forming the first continuous wrinkle 134 may be formed in the same or different airfoil shapes.

The plurality of second wrinkles 133 forming the second continuous wrinkle 135 may be formed in the same or different airfoil shapes.

The plate assembly 10 has the heat transfer wrinkle pattern 131 of the heat transfer plate 100 located at odd numbers and the heat transfer wrinkle pattern 131 of the heat transfer plate 100 located at even numbers based on the longitudinal center plane (C). They can be formed to protrude in opposite directions.

Although specific embodiments of the present invention have been described and shown above, it is known in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. This is self-evident to those who have it.

Accordingly, such modifications or variations should not be understood individually from the technical idea or viewpoint of the present invention, and the modified embodiments should be regarded as falling within the scope of the claims of the present invention.

1: plate heat exchanger 10: plate assembly
11: first heat transfer channel 12: second heat transfer channel
100: heating plate 110: first end
111: first distribution area 112: first distribution pattern
113: 1st port hole 114: 4th port hole
120: second end 121: second distribution area
122: Second distribution pattern 123: Second port hole
124: Third port hole 130: Heat transfer area
131: Heat transfer wrinkle pattern 132: First wrinkle
133: 2nd wrinkle 134: 1st continuous wrinkle
135: second continuous wrinkle 140: first separation groove area
150: Second separation groove area 160: Mounting groove
200: first fixing plate 300: second fixing plate
310: 1st port 320: 2nd port
330: 3rd port 340: 4th port
400: Gasket I: Rotating shaft
C: Center plane L: Center line
P: Pitch G: Channel spacing
D: depth

Claims (10)

It includes a plate assembly formed by stacking a plurality of heat transfer plates, a first fixing plate coupled to one side of the plate assembly, and a second fixing plate coupled to the other side of the plate assembly through which the first fluid and the second fluid enter and exit. As a plate heat exchanger,
The heating plate is,
a first distribution region formed at a first end and having a first distribution pattern;
a second distribution region formed at the second end and having a second distribution pattern;
a heat transfer area formed between the first distribution area and the second distribution area and having a heat transfer wrinkle pattern;
a first port hole formed at the first end through which the first fluid flows;
a second port hole formed at the second end through which the first fluid flows;
a third port hole formed at the second end and connected to the second distribution area through which the second fluid flows; and
An airfoil corrugated plate heat exchanger comprising a fourth port hole formed at the first end and connected to the first distribution area through which the second fluid flows. According to paragraph 1,
The plate assembly is,
An airfoil corrugated plate heat exchanger, characterized in that the heat transfer plates arranged in odd or even numbers are stacked by rotating 180 degrees around a rotation axis that passes through the center of one side and the rear side. According to paragraph 2,
The heat transfer wrinkle pattern is an airfoil characterized in that airfoil-shaped first wrinkles protruding upward and airfoil-shaped second wrinkles protruding downward are alternately arranged based on the longitudinal center plane of the heat transfer plate. Corrugated plate heat exchanger. According to paragraph 3,
The heat transfer wrinkle pattern is an airfoil corrugated plate heat exchanger characterized in that first continuous wrinkles in which the first wrinkles are continuous at least twice and second continuous wrinkles in which the second wrinkles are continuous at least twice are alternately arranged. . According to clause 3 or 4,
The heat transfer wrinkle pattern is an airfoil corrugated plate heat exchanger, characterized in that both sides extend obliquely toward the first end or the second end with respect to the longitudinal center line of the heat transfer plate. According to clause 3 or 4,
The heating plate is,
a first separation groove area formed between the first distribution area and the heat transfer area; and
An airfoil corrugated plate heat exchanger further comprising a second separation groove area formed between the second distribution area and the heat transfer area. According to clause 3 or 4,
An airfoil corrugated plate heat exchanger, characterized in that the airfoil shape of the first wrinkle is formed differently from the airfoil shape of the second wrinkle. According to clause 3 or 4,
An airfoil corrugated plate heat exchanger, characterized in that the airfoil shape of the first continuous wrinkles is formed differently from the airfoil shape of the second continuous wrinkles. According to clause 3 or 4,
The first wrinkles of the first continuous wrinkles are formed in different airfoil shapes,
An airfoil corrugated plate heat exchanger, characterized in that the second wrinkles of the second continuous wrinkles are formed in different airfoil shapes. According to clause 3 or 4,
The plate assembly is,
An airfoil corrugated plate heat exchanger wherein the heat transfer wrinkle pattern of the odd-numbered heat transfer plate and the even-numbered heat transfer wrinkle pattern of the heat transfer plate are formed to protrude in opposite directions with respect to the longitudinal center plane. .

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