KR101837087B1 - Curved surface micro-channel heat exchanger and the method of manufacturing the same - Google Patents

Abstract

The present invention provides a micro-channel heat exchanger and a method of manufacturing the same. According to the present invention, the micro-channel heat exchanger comprises: a housing having an entrance unit into which a first fluid flows and an exit unit through which the first fluid passes; and a heat exchanger having a plurality of micro-channel pipes in which the first fluid and a second fluid move, and having one side opened for the first fluid to flow into an internal space thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved surface micro-channel heat exchanger and a method of manufacturing the same,

Embodiments of the present invention are directed to an apparatus and method. More particularly, to a curved microchannel heat exchanger and a method of manufacturing the same.

In general, a plate-type heat exchanger having a microchannel is a device in which a plurality of thin and small metal plates having a plurality of microchannels are formed only on one side, and heat is exchanged between fluids flowing through the microchannels of the odd-numbered layer and the even- . When microchannel is applied, the smaller the channel diameter, the higher the heat transfer coefficient and the heat transfer area can be increased. Therefore, a small size high performance heat exchanger can be manufactured.

Since the plate heat exchanger exchanges heat with each other while moving different fluids, the operating range is limited depending on the temperature and pressure of each fluid, and the utilization is limited by plate type. The fluid passing through the microchannel must have a pressure above a certain level. If the fluid has a lot of heat but the flow pressure is low, it can not recover heat and must be discarded.

Therefore, there is a need for a microchannel heat exchanger capable of recovering the heat of a fluid having a low flow pressure and a high flow rate in various environments, and having improved thermal efficiency.

The above-described background technology is technical information that the inventor holds for the derivation of the present invention or acquired in the process of deriving the present invention, and can not necessarily be a known technology disclosed to the general public prior to the filing of the present invention.

Embodiments of the present invention aim to provide a microchannel heat exchanger with improved heat exchange efficiency and improved space utilization and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a microfluidic device including a housing having an inlet portion through which a first fluid flows, an outlet through which the first fluid flows, and a plurality of microchannel tubes through which a second fluid other than the first fluid moves, And a heat exchange unit which is opened to allow the first fluid to flow into the internal space.

The heat exchanger includes a tube having a plurality of microchannel tubes therein and curved therein, a core channel enclosed by an inner circumferential surface of the tube, a core channel through which the first fluid can move, And an inflow opening for guiding the first fluid to the core flow path.

Further, the heat exchanger may have a continuous spiral shape.

The heat exchanger may have a predetermined radius and may be stacked in a height direction.

The heat exchanger may be laminated in the width direction to increase the radius.

Also, the heat exchanger may be arranged to have a predetermined gap between neighboring spirals.

The first fluid may be in contact with the outer wall of the heat exchange unit and the inner wall of the heat exchange unit, and may exchange heat with the second fluid while moving along the inner wall of the heat exchange unit.

The flow rate of the first fluid passing through the housing may be greater than the flow rate of the second fluid.

The heat exchange unit may include a first heat exchange unit having a first inlet opening through which the first fluid flows, and a second heat exchange unit disposed around the first heat exchange unit and having a second inlet opening through which the first fluid flows, May be provided.

Further, the first inflow opening and the second inflow opening may be arranged to face each other.

The first fluid may be in contact with the core flow path of the first heat exchange section, the flow path between the first heat exchange section and the second heat exchange section, and the outer wall of the second heat exchange section.

According to another aspect of the present invention, there is provided a fluid treatment apparatus including a housing having an inlet portion through which a first fluid flows and an outlet through which the first fluid passes, and a second fluid having a spiral shape in a longitudinal direction, And a heat exchanging part having a plurality of microchannel tubes arranged in a curved shape and at least a part of which is curved and a core flow path formed inside the tube so as to curl the first fluid.

In addition, the tube may have a circular tubular shape at least partially open.

The plurality of heat exchanging units may be disposed to surround the core flow channel.

According to another aspect of the present invention, there is provided a method of manufacturing a microchannel, comprising the steps of: disposing and joining a second plate having a microchannel tube on a first plate; bonding the first plate and the second plate; Processing the heat exchanging part such that a gap is formed between both ends of the heat exchanging part, and processing the heat exchanging part into a continuous spiral shape.

Also, in the step of machining the heat exchanging part, both ends of the first plate and the second plate may be bent and the core flow path may be disposed therein.

Further, in the step of machining the heat exchanging part into a spiral shape, the heat exchanging part can be processed to have a predetermined radius and stacked in the height direction.

In addition, the step of machining the heat exchanging part into a spiral shape may be performed so as to be laminated in the width direction so that the radius of the heat exchanging part increases.

Embodiments of the present invention can increase the heat exchange efficiency by increasing the contact area between the fluid passing through the curved microchannel tube and the fluid passing through the housing 110.

In addition, the curved microchannel heat exchanger can be formed in a spiral shape with a substantially tubular heat exchanger to reduce its size, thereby increasing the space utilization and can be used in various environments.

Also, the curved microchannel heat exchanger can heat exchange with the fluid moving along the microchannel tube while the fluid passing through the inlet opening moves along the corechannel, thereby increasing the heat exchange amount.

In addition, the curved microchannel heat exchanger can recover waste heat of any fluid having a low operating pressure and a large amount of heat and flow rate.

1 is a perspective view illustrating a curved microchannel heat exchanger according to an embodiment of the present invention.
2 is a cross-sectional view of a curved microchannel heat exchanger taken along line II-II in FIG.
3 is a cross-sectional view showing a cross section of the heat exchanging portion of Fig.
4 is a cross-sectional view showing a modified example of the heat exchanger of FIG.
5 is a perspective view illustrating a microchannel heat exchanger according to another embodiment of the present invention.
6 is a cross-sectional view of a curved microchannel heat exchanger of FIG. 5;
7 is a perspective view showing a curved microchannel heat exchanger according to another embodiment of the present invention.
8 is a flowchart illustrating a method of manufacturing a curved microchannel heat exchanger according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning. Also, the singular expressions include plural expressions unless the context clearly dictates otherwise. Also, the terms include, including, etc. mean that there is a feature, or element, recited in the specification and does not preclude the possibility that one or more other features or components may be added.

Also, in the drawings, for convenience of explanation, the components may be exaggerated or reduced in size. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings. Also, if an embodiment is otherwise feasible, the particular process sequence may be performed differently than the sequence described. For example, two processes that are described in succession may be performed substantially concurrently, and may be performed in the reverse order of the order described.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

FIG. 1 is a perspective view showing a curved microchannel heat exchanger 100 according to an embodiment of the present invention, and FIG. 2 is a sectional view of a curved microchannel heat exchanger 100 taken along II-II of FIG. 1 And Fig. 3 is a sectional view showing a cross section of the heat exchanging part 120 of Fig.

1 to 3, the curved microchannel heat exchanger 100 may include a housing 110 and a heat exchange unit 120. The first fluid may flow into the inner space of the housing 110 and the second fluid may pass through the heat exchange unit 120 to exchange heat with the first fluid.

The housing 110 may include an inlet 111 through which the first fluid flows and an outlet 112 through which the first fluid is discharged and may exchange heat with the second fluid in the inner space.

 The housing 110 may have an internal space capable of accommodating the heat exchanging part 120, and is not limited to a specific form. Hereinafter, for convenience of explanation, the housing 110 will be described mainly with reference to an example of a substantially hexahedral shape.

The heat exchanging part 120 may have a plurality of microchannel tubes 122 through which the second fluid can flow, and the first fluid may be introduced into the internal space. The heat exchange unit 120 may include a tube 121, a microchannel tube 122, a core channel 123, and an inlet opening 124. Further, the second fluid flows through the inlet end 128 of the heat exchange unit 120, and the second fluid is discharged through the outlet end 129.

The tube 121 includes a microchannel tube 122 therein. The tube 121 may be manufactured by joining the first plate 121a and the second plate 121b and the microchannel tube 122 may be formed in one of the first plate 121a or the second plate 121b So that it can be produced by joining two plates.

The tube 121 may be at least partially bent. The tube 121 may be curved such that at least a portion thereof has a curvature. For example, it can have the shape of a roughly circular tube.

A plurality of microchannel tubes 122 may be provided and disposed inside the tube 121. The microchannel tube 122 may be arranged radially around the core channel 123. The microchannel tube 122 is not limited to a specific shape, and may have a linear shape, a zigzag shape, a curved shape, or an oblique shape extending in the longitudinal direction.

The core flow path 123 is surrounded by the inner circumferential surface of the tube 121 and may extend along the longitudinal direction of the heat exchange portion 120. The first fluid can be heat-exchanged with the second fluid while passing through the core flow path 123.

The inlet opening 124 may extend longitudinally at one side of the tube 121. That is, the inlet opening 124 may open one side of the tube 121 to allow the first fluid to flow into the core flow path 123. The shape and arrangement of the inlet opening 124 is not limited to any particular shape and arrangement. For example, the inflow opening 124 may have a slit shape and may extend continuously in the longitudinal direction of the tube 121. Further, the inflow opening may be arranged to have a slit shape, a hole, and a long hole shape and to be spaced apart in the longitudinal direction of the tube 121. Hereinafter, for convenience of explanation, the inflow opening 124 will be described with reference to an example in which the inflow opening 124 has a slit shape and extends continuously in the longitudinal direction of the tube 121.

The inflow opening 124 can be set at a distance between both ends of the first plate 121a and the second plate 121b. The first plate 121a and the second plate 121b are bent so that the tube 121 is formed at a predetermined interval without manufacturing the first plate 121a and the second plate 121b at the time of manufacturing, The opening 124 can be formed.

The heat exchanging part 120 may have a spiral shape. The heat exchanging part 120 may have a helical shape continuously rotating with a predetermined radius. The heat exchanging part 120 may be formed so as to be stacked between the inlet end 128 and the outlet end 129 which are in the height direction. At this time, a predetermined gap g1 may be set between neighboring spirals of the heat exchanging unit 120. [ The first fluid can pass through the gap g1 and the amount of heat exchange area can be increased.

The first fluid flows into the inlet portion 111 of the housing 110 and is discharged to the outlet portion 112. The second fluid flows into the inlet end 128 of the heat exchanging part 120 and is discharged to the outlet end 129. The second fluid can move along the helical microchannel tube 122.

The first fluid may pass through the interior space of the housing 110. In detail, an A flow passing through the space surrounded by the spiral tube 121 is generated while moving from the inlet portion 111 to the outlet portion 112. Also, a B flow through the space between the helical tubes 121 is also created. Further, a C flow that rotates the spiral tube 121 along the core flow passage 123 through the inlet opening 124 is generated.

The first fluid contacts the outer surface of the heat exchanging part 120 during the A flow and can exchange heat with the second fluid. The A flow is capable of heat exchange with the second fluid in a large amount since the flow amount or the flow velocity is large. B flow can pass through the space between the tubes 121 to increase the heat exchange area. C flow can be moved along the core flow path 123 to increase the amount of heat exchange with the second fluid.

 The flow rate of the first fluid is larger than the flow rate of the second fluid. Further, the flow pressure of the first fluid is smaller than the flow pressure of the second fluid. Conventionally, both the first fluid and the second fluid are heat-exchanged by using a microchannel tube. However, when the flow pressure of the first fluid is low and the flow volume is large, the first fluid flows into the microchannel tube The heat exchange efficiency is lowered.

The second fluid having a high pressure moves along the microchannel tube 122 and the first fluid having a large amount of heat and flow can move to move along the housing 110 to easily recover the waste heat of the first fluid can do.

The microchannel heat exchanger 100 according to an embodiment of the present invention can increase the heat exchange efficiency by increasing the contact area between the fluid passing through the microchannel tube 122 and the fluid passing through the housing 110.

In addition, the micro-channel heat exchanger 100 according to an embodiment of the present invention can reduce the size of the micro-channel heat exchanger 100 by forming the substantially tubular heat exchanging part 120 in a spiral shape, Available.

The microchannel heat exchanger 100 according to an embodiment of the present invention is configured such that the fluid that has passed through the inlet opening 124 moves along the core channel 123 and the fluid that moves along the microchannel tube 122, As a result, the amount of heat exchange can be increased.

In addition, the microchannel heat exchanger 100 according to an embodiment of the present invention can recover waste heat of any fluid having a low operating pressure and a large amount of heat and flow rate.

4 is a cross-sectional view showing a modified example of the heat exchanging portion 120a of Fig.

4, a plurality of heat exchanging units 120a may be provided, and each heat exchanging unit may be disposed so as to surround the core flow paths 123. Referring to FIG. The heat exchanging part 120a may include a first heat exchanging part and a second heat exchanging part, and the second heat exchanging part may be disposed to surround the outside of the first heat exchanging part.

The first heat exchanger includes a first tube 121 having a first plate 121a and a second plate 121b, a first microchannel tube 122 formed between the first plate 121a and the second plate 121b, A core channel 123 formed inside the first tube 121 and a first inlet opening 124 formed to open at one side of the first tube 121. [

The second heat exchanger includes a second tube 131 having a third plate 131a and a fourth plate 131b, a second microchannel tube 132 formed between the third plate 131a and the fourth plate 131b, A connection flow path 133 formed between the inside of the second tube 131 and the outside of the first tube 121 and a second inflow opening 134 formed to be opened at one side of the second tube 131 have.

The first inlet opening 124 is disposed to face the second inlet opening 134 so that the first fluid can flow into the core flow passage 123 quickly.

The first fluid may flow into the core flow path 123 and the connection flow path 133 through the first inflow opening 124 and the second inflow opening 134. That is, the first fluid moves along the core flow path 123 by the C flow, and can perform heat exchange while moving along the connection flow path 133 by the D flow.

The microchannel heat exchanger 100 having the heat exchanging unit 120a can increase the heat exchange efficiency of the fluid to be heat-exchanged by increasing the heat exchange area.

FIG. 5 is a perspective view illustrating a microchannel heat exchanger 200 according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view illustrating a microchannel heat exchanger 200 of FIG.

5 and 6, the microchannel heat exchanger 200 includes a housing 210 having an inlet 211 and an outlet 212, a heat exchanger 220 having a microchannel 222, ).

The heat exchange unit 220 includes a tube 221 having an inlet end 228 and an outlet end 229, a microchannel tube 222 included in the tube 221, And an inlet opening 224 in which one side of the core channel 223 and the tube 221 are opened to open. The respective constitutions are the same as or similar to those described above, and there are differences in shape.

The heat exchanging part 220 may have a continuous spiral shape. In particular, the heat exchanging part 220 may be formed so that the radius increases in the width direction. A predetermined gap g2 may be set between neighboring spirals of the heat exchanging unit 220. [ The first fluid can pass through the gap g2 and the amount of the heat exchange area can be increased.

The first fluid can pass through the interior space of the housing 210. Specifically, while moving from the inlet portion 211 to the outlet portion 212, an A flow that moves while contacting the upper side or the lower side of the spiral tube 221 is generated. Further, a B flow passing through the space between the helical tubes 221 is also generated. Further, a C flow that rotates the helical tube 221 along the core flow passage 223 through the inlet opening 224 is generated.

 The microchannel heat exchanger 200 according to the embodiment of the present invention can increase the heat exchange efficiency by increasing the contact area between the fluid passing through the microchannel tube 222 and the fluid passing through the housing 210.

7 is a perspective view showing a curved microchannel heat exchanger 320 according to another embodiment of the present invention.

The curved microchannel heat exchanger 320 is disposed inside the reservoir 310 and includes a housing 321, a microchannel tube 322, an inlet header 323, an outlet header 324, an inlet line 328, An outlet line 329 may be provided.

The housing 321 may have a predetermined radius of curvature R. [ A plurality of microchannel tubes 322 may be disposed in the housing 321.

The inlet header 323 is connected to the inlet line 328 and is connected to the inlet end of the plurality of microchannels 322. The fluid entering the inlet line 328 is branched and moved to the respective microchannel tube 322 in the inlet header 323.

The outlet header 324 is connected to the outlet line 329 and is connected to the outlet end of the plurality of microchannel tubes 322. The fluid that has passed through each microchannel tube 322 is combined in the outlet header 324 and discharged to the outlet line 329.

That is, the fluid moves in the i direction along the inlet header 323 at the inlet line 328, moves in the j direction along the microchannel tube 322 and flows from the outlet header 324 toward the outlet line 329 direction.

Since the curved microchannel heat exchanger 320 has a curved shape, the contact area of the fluid passing through the microchannel tube 322 can be increased to improve the heat exchange efficiency.

8 is a flowchart illustrating a method of manufacturing a microchannel heat exchanger according to another embodiment of the present invention.

8, a method of manufacturing a microchannel heat exchanger includes a step (S10) of arranging and joining a second plate 121b having a microchannel tube on a first plate 121a, (S20) of machining the heat exchanger so that the second plate (121b) is curved and a gap is formed between both ends of the first plate (121a) and the second plate (121b) (S30). ≪ RTI ID = 0.0 >

First, the second plate 121b on which the microchannel tube is formed may be disposed on the first plate 121a and may be bonded using diffusion bonding or brazing.

Then, the first plate 121a and the second plate 121b can be curved. That is, the flat first plate 121a and the second plate 121b may be bent to produce a cylindrical tube-shaped heat exchanger having a predetermined curvature. At this time, core flow paths are disposed inside the first plate 121a and the second plate 121b, and both ends of the first plate 121a and the second plate 121b are spaced apart from each other by a predetermined distance, .

Thereafter, the heat exchanging unit 120 can be processed to have a spiral shape. The heat exchanging part 120 may be stacked in the height direction with a predetermined radius. Further, the heat exchanging part 120 may be laminated in the width direction to increase the radius.

Although the present invention has been described with reference to the limited embodiments, various embodiments are possible within the scope of the present invention. It will also be understood that, although not described, equivalent means are also incorporated into the present invention. Therefore, the true scope of protection of the present invention should be defined by the following claims.

100 200 320: Micro channel heat exchanger
110 210 321: Housing
120 120a 220: Heat exchanger
121 221: tube
122 222 322: Microchannel tube
123 223:
124 224: inlet opening

Claims (18)

A housing having an inlet through which the first fluid flows and an outlet through which the first fluid passes; And
And a heat exchange unit having a plurality of microchannel tubes through which a second fluid other than the first fluid moves, and one side of which is opened to allow the first fluid to flow into the internal space,
The heat-
A tube including the plurality of microchannel tubes therein and continuously stacked in a spiral shape having a predetermined radius around a first direction;
A core flow channel surrounding the inner circumferential surface of the tube and capable of moving in a spiral manner along the tube; And
And an inflow opening that opens in the tube in a radial direction of the first direction and at least a portion extends along the helical shape to guide the first fluid to the core flow path. A housing having an inlet through which the first fluid flows and an outlet through which the first fluid passes; And
And a heat exchange unit having a plurality of microchannel tubes through which a second fluid other than the first fluid moves, and one side of which is opened to allow the first fluid to flow into the internal space,
The heat-
A tube including the plurality of microchannel tubes therein and continuously stacked in a spiral shape with a radius increasing from a center in a first direction;
A core flow channel surrounding the inner circumferential surface of the tube and capable of moving in a spiral manner along the tube; And
And an inlet opening that opens in the tube in the first direction and at least a portion extends along the spiral to guide the first fluid to the core flow path. delete delete delete 3. The method according to claim 1 or 2,
The heat-
And is arranged to have a predetermined gap between neighboring spirals. 3. The method according to claim 1 or 2,
Wherein the first fluid contacts the outer wall of the heat exchange unit and the inner wall of the heat exchange unit and exchanges heat with the second fluid while moving along the inner wall of the heat exchange unit. 3. The method according to claim 1 or 2,
Wherein a flow amount of the first fluid passing through the housing is larger than a flow amount of the second fluid. 3. The method according to claim 1 or 2,
The heat-
A first heat exchange unit having a first inlet opening through which the first fluid flows; And
And a second heat exchange unit arranged to surround an outer side of the first heat exchange unit and having a second inflow opening through which the first fluid flows. 10. The method of claim 9,
Wherein the first inlet opening and the second inlet opening are disposed to face each other. 10. The method of claim 9,
Wherein the first fluid is in contact with the core flow path of the first heat exchange section and the flow path between the first heat exchange section and the second heat exchange section and the outer wall of the second heat exchange section. delete delete delete Disposing and bonding a second plate having a microchannel tube on a first plate;
The first plate and the second plate are bent so that the inner space of the first plate forms a core flow path and the heat exchanging portion is processed so that a gap is formed between both ends of the first plate and the second plate step; And
Wherein the heat exchanger has a predetermined radial center around the first direction and the core flow paths are continuously stacked in a spiral shape and the inflow opening is arranged in the radial direction of the first direction or the heat exchange portion has a radius And processing the heat exchanging portion so that the inlet opening is disposed in the first direction and the heat exchanging portion is continuously stacked in the increasing helical shape and the inlet opening is arranged in the first direction. 16. The method of claim 15,
The step of processing the heat exchanger
Wherein the inlet opening extends spirally along the core flow path. delete delete

Images