KR102152460B1 - Printed circuit heat exchanging plate and printed circuit heat exchanger including the same - Google Patents

Abstract

An embodiment of the present invention provides a printed circuit heat exchanger including the same and a printed board heat exchanger capable of uniformly transferring heat in all channels by making the flow rate uniform for all channels. Here, the printed board type heat exchange plate includes an inlet head part and a heat exchange part. The inlet head portion has an inlet end through which a fluid enters, a head chamber through which the incoming fluid moves, and an outlet end through which the fluid is discharged. The heat exchanger has a plurality of channels connected to the outlet end and arranged to be spaced apart so that fluid is distributed and moved. The outlet end is formed to be asymmetrical around a virtual reference line extending in the first direction from the center of the inlet end, and the heat exchange unit includes a first edge region channel and a second edge region channel disposed adjacent to sidewalls provided on both sides. , Has a center area channel disposed between the first edge area channel and the second edge area channel, and the second edge area channel, which is disposed farther from the virtual reference line, protrudes from the center area channel toward the entrance end. Is formed.

Description

Printed board type heat exchanger and printed board type heat exchanger including the same {PRINTED CIRCUIT HEAT EXCHANGING PLATE AND PRINTED CIRCUIT HEAT EXCHANGER INCLUDING THE SAME}

The present invention relates to a printed board type heat exchanger and a printed board type heat exchanger including the same, and more particularly, a printed board type heat exchange plate capable of evenly transferring heat in all channels by making the flow rate uniform for all channels, and including the same. It relates to a printed board type heat exchanger.

Printed Circuit Heat Exchanger (PCHE) is manufactured by stacking several to tens of thin and small heat exchangers with micro-channels processed using MEMS (Micro Electro-Mechanical System) technology. The microchannel used in the heat exchange plate refers to a channel whose characteristic length is between 1 μm and several mm.

Printed board type heat exchanger equipped with micro-channels uses the fact that the heat transfer coefficient in the pipe is inversely proportional to the pipe diameter in the flow of the pipe in a steady state. A narrow micro-channel is made and the fluid flows into the channel to exchange high temperature and low temperature fluids. You can do it.

As the size of the channels decreases and the number of channels increases, the heat transfer area per unit volume increases, so the printed board type heat exchanger shows superior performance compared to the existing macro unit heat exchangers, and it is possible to reduce size and weight. Due to these advantages, there is increasing interest in the application of micro-channel type heat exchangers in micro-electronic devices and various examples requiring local cooling.

In the process of moving the fluid through the microchannels, the high-temperature fluid and the low-temperature fluid respectively pass through adjacent channels up and down to exchange heat with each other.

Typically, the heat exchange plate has an inlet head on one side of a microchannel in which heat exchange occurs while a fluid moves, and a discharge head on the other side of the microchannel.

However, in the conventional printed circuit board type heat exchange plate, there is a problem that the velocity of the fluid moving from the inlet head to the plurality of microchannels is not uniform. In this case, since heat transfer is different for each channel, there is a problem in that the overall heat exchange efficiency is lowered.

Korean Registered Patent Publication No. 13179920 (2013. 10. 16. Announcement)

In order to solve the above problems, the technical problem to be achieved by the present invention is to provide a printed board type heat exchanger including the same and a printed board type heat exchanger capable of uniformly transferring heat across all channels by making the flow rate uniform for all channels. Is to do.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

In order to achieve the above technical problem, an embodiment of the present invention has an inlet end through which the fluid enters, a head chamber through which the fluid entering the inlet end moves, and an outlet end through which the fluid moving into the head chamber is discharged. Inlet head; And a heat exchanger having a plurality of channels connected to the outlet and extending along a first direction to distribute and move the flowing fluid, and having a plurality of channels spaced apart from each other along a second direction crossing the first direction, The outlet end is formed so as to be asymmetrical around a virtual reference line extending in the first direction from the center of the inlet end, and the heat exchange part is a first edge disposed adjacent to sidewalls provided in the first direction on both sides. The second edge region having an region channel and a second edge region channel, and a center region channel disposed between the first edge region channel and the second edge region channel, and disposed further from the virtual reference line The channel provides a printed circuit board type heat exchange plate, characterized in that the front end of the channel is protruded toward the inlet end.

On the other hand, in order to achieve the above technical problem, an embodiment of the present invention is an inlet end through which the fluid enters, a head chamber through which the fluid entering the inlet end is moved, and an outlet end through which the fluid moving into the head chamber is discharged. Inlet head portion having a; And a heat exchange unit having a plurality of channels connected to the outlet end and extending along a first direction to distribute and move the incoming fluid, and being spaced apart along a second direction crossing the first direction, the The outlet end is formed to be symmetrical about a virtual reference line extending in the first direction from the center of the inlet end, and the heat exchange part is a first edge region disposed adjacent to sidewalls provided in the first direction on both sides. A channel and a second edge area channel, and a center area channel disposed between the first edge area channel and the second edge area channel, and the first edge area channel and the second edge area channel are the center area channel It provides a printed circuit board type heat exchange plate, characterized in that the front end of the channel protrudes toward the inlet end.

In an embodiment of the present invention, the plurality of channels may be formed such that the front end of the plurality of channels protrude in a round shape.

In an embodiment of the present invention, the plurality of channels may be formed such that the front end of the plurality of channels protrude in a wedge shape.

In an embodiment of the present invention, the front end of the second edge region channel may be formed to protrude toward the adjacent sidewall.

In an embodiment of the present invention, the outlet end of the inlet head is divided into an open part connected to the plurality of channels and a closed part not connected to the plurality of channels, and as the length of the closing part increases in the second direction , The protruding length of the second edge region channel may also increase proportionally.

In an embodiment of the present invention, the front end portions of the first edge region channel and the second edge region channel may be formed to protrude toward the adjacent sidewalls, respectively.

On the other hand, in order to achieve the above technical problem, an embodiment of the present invention is a printed board type heat exchange plate provided by stacking a plurality of vertically; And it provides a printed board type heat exchanger including a housing for receiving and fixing the printed board type heat exchanger plate provided by being stacked therein.

On the other hand, in order to achieve the above technical problem, an embodiment of the present invention is a printed board type heat exchange plate provided by stacking a plurality of vertically; And it provides a printed board type heat exchanger including a housing for receiving and fixing the printed board type heat exchanger plate provided by being stacked therein.

According to an embodiment of the present invention, the front end of the channel included in the edge region channel adjacent to the sidewall is formed to protrude toward the entrance end, and in particular, the front end of the channel is protruded toward the adjacent sidewall so that it is adjacent to the sidewall. It is possible to reduce the flow resistance of the fluid flowing into the channel of the edge region. Through this, it is possible to reduce the occurrence of the flow separation phenomenon, thereby making the flow uniform, and making the flow velocity uniform for all channels, so that heat transfer can be made evenly in all channels.

In addition, according to an embodiment of the present invention, the front end of the channel is formed to protrude in a round shape or a wedge shape, so that the flow resistance of the fluid moving between the channels can be reduced.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is an exemplary view schematically showing a printed board type heat exchanger according to a first embodiment of the present invention.
FIG. 2 is a plan view showing the inlet head and channels of the printed board type heat exchange plate according to the first embodiment of the present invention.
3 is an exemplary view for explaining the pressure change in the printed circuit heat exchanger plate according to the first embodiment of the present invention.
4 is a graph for explaining the flow rate of each channel of the printed circuit board type heat exchange plate according to the first embodiment of the present invention.
5 is an exemplary view schematically showing a printed board type heat exchanger according to a second embodiment of the present invention.
6 is an exemplary plan view showing a channel of a printed board type heat exchange plate according to a second embodiment of the present invention.
7 is a graph for explaining a flow rate for each channel of a printed board type heat exchange plate according to a second embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be “connected (connected, contacted, bonded)” to another part, it is not only “directly connected”, but also “indirectly connected” with another member in the middle. This includes cases where there is "". In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

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

1 is an exemplary view schematically showing a printed board type heat exchanger according to a first embodiment of the present invention, and FIG. 2 is a plan view showing a center of an inlet head portion and a channel of the printed board type heat exchanger according to the first embodiment of the present invention. It is an exemplary diagram.

1 and 2, the printed board type heat exchange plate 10 may include an inlet head part 100 and a heat exchange part 200.

A fluid may be introduced through the inlet head unit 100, and the fluid flowing into the inlet head unit 100 may be distributed and moved to the heat exchange unit 200.

In addition, the printed board type heat exchange plate 10 may include a discharge head part 300, and fluid distributed and moved by the heat exchange part 200 may be discharged through the discharge head part 300.

The printed board type heat exchange plate 10 may be formed in a single plate shape, and the inlet head 100 and the discharge head 300 may be formed at both ends.

In addition, the heat exchange unit 200 may be formed between the inlet head unit 100 and the discharge head unit 300, and a plurality of channels 201 connecting the inlet head unit 100 and the discharge head unit 300 ).

The printed board type heat exchanger may include a printed board type heat exchange plate 10 that is provided by stacking a plurality of the printed board type heat exchangers in the vertical direction, and a high-temperature fluid and a low-temperature fluid may move between each printed board type heat exchange plate 10.

Since a plurality of channels 201 can protrude to increase the surface area of the heat exchange unit 200, the high temperature fluid and the low temperature fluid moving between each of the printed circuit board type heat exchange plates 10 are transferred to the heat exchange unit 200. It can be exchanged effectively while passing through.

In order to increase the heat exchange efficiency between the high-temperature fluid and the low-temperature fluid, the high-temperature fluid and the low-temperature fluid may be moved alternately for each layer of the laminated printed circuit board type heat exchange plate 10.

The printed board type heat exchanger may include a printed board type heat exchange plate 10 that is stacked and provided, and a housing 20 that accommodates and fixes the printed board type heat exchange plate 10 that is stacked and provided inside.

Hereinafter, for convenience of description, a front end/front end/forward direction and a rear end/rear end/rear direction are described based on the flow direction of the fluid. That is, when the fluid moves from the first point to the second point, the first point will be described as the front end/front end/forward direction and the second point as the rear end/rear end/rear direction.

The inlet head 100 may have an inlet end 110, a head chamber 120 and an outlet end 130.

Fluid may enter into the inlet end 110.

The head chamber 120 may be connected to the rear end of the inlet end 110, and the fluid entering the inlet end 110 may move to the head chamber 120.

The outlet end 130 may be connected to the rear end of the head chamber 120, and the fluid entering the inlet 110 and moving to the head chamber 120 may be discharged to the outlet 130.

The heat exchange part 200 may be connected to the outlet end 130 and extend along the first direction A1 so that the flowing fluid is distributed and moved. In addition, the heat exchange unit 200 may have a plurality of channels 201 that are disposed to be spaced apart along a second direction A2 crossing the first direction A1.

In this embodiment, the exit end 130 may be formed to be asymmetrical around the virtual reference line SL extending in the first direction A1 from the center of the entrance end 110.

In addition, the outlet end 130 may be divided into an open portion connected to the plurality of channels 201 and a closed portion 21 not connected to the plurality of channels 201. The closing portion 21 may be formed on the housing 20, but is not limited thereto, and may be formed directly on the printed circuit board type heat exchange plate 10. The closing portion 21 may be formed to extend in the second direction A2.

The heat exchange unit 200 may have a first edge area channel 220a, a second edge area channel 220b, and a center area channel 230.

The first edge region channel 220a and the second edge region channel 220b may be channels disposed adjacent to sidewalls 210a and 210b provided in the first direction A1 on both sides of the heat exchange unit 200. have.

Here, the sidewalls 210a and 210b are side surfaces of the housing 20 provided to surround the printed board type heat exchange plate 10, or a channel provided at the outermost of the channels provided in the heat exchange part 200, or, It may be a wall surface separately provided on both sides of the heat exchange part 200.

Each of the first edge region channel 220a and the second edge region channel 220b may include a plurality of channels, and the channels included in the first edge region channel 220a and the second edge region channel 220b The number can be predetermined.

The center region channel 230 may be a channel disposed between the first edge region channel 220a and the second edge region channel 220b, and may be provided in the center of the heat exchange unit 200. The center area channel 230 may include a plurality of channels, and the channels included in the center area channel 230 exclude channels included in the first edge area channel 220a and the second edge area channel 220b. It can be a channel.

The first edge area channel 220a may be a channel disposed relatively close to the virtual reference line SL, and the second edge area channel 220b is relatively farther away from the virtual reference line SL. It may be an arranged channel.

Further, in the present embodiment, the second edge region channel 220b disposed further away from the virtual reference line SL may be formed such that the front end of the center region channel 230 protrudes toward the inlet end 110. .

That is, when the channel included in the second edge area channel 220b and the rear end of the channel included in the center area channel 230 are positioned on the same line provided in the second direction, the second edge area channel 220b The length of the channel included in) may be longer than the length of the channel included in the central area channel 230.

In addition, the front ends of the channels 221 to 226 included in the second edge region channel 220b may be formed to protrude toward the sidewall 210b.

That is, among the channels 221 to 226 included in the second edge region channel 220b, the front end of the first channel 221 disposed closest to the sidewall 210b is relatively the largest toward the inlet end 110. It may be formed to protrude. In addition, the front end of the sixth channel 226 disposed closest to the central region channel 230 may be formed to protrude relatively the least.

In addition, as the channel provided in the direction of the sidewall 210b, that is, from the fifth channel 225 to the fourth channel 224, the third channel 223, and the second channel 222, the front end is formed to protrude. I can.

As in the present embodiment, when the center of the outlet end 130 is asymmetric with the center of the inlet end 110, a flow separation phenomenon occurs in a channel adjacent to the sidewall provided relatively far from the center of the inlet end 110. As a result, the flow rate may become unstable. When the flow separation phenomenon occurs, when viewed from one channel, flow separation occurs at the inlet of the channel and the fluid is pulled up or down in the channel, thereby reducing the cross-sectional area through which the fluid can flow. As a result, the flow rate of the fluid may increase.

On the other hand, the flow occurs in a positive pressure gradient, and when the fluid passes through the channel, the positive pressure gradually decreases due to the frictional force with the channel surface, resulting in a negative pressure, and the flow velocity gradually decreases. Therefore, the flow rate is relatively fast at the inlet of the channel, but when the flow progresses to a certain extent, the flow falls off the wall of the channel and the flow is stagnated and retarded.When discharged from the channel, the flow rate is reduced. Can be.

In this case, since the flow rate of the fluid is different for each channel, heat transfer cannot be evenly performed in all channels.

Referring to the present embodiment, the flow separation phenomenon is the second edge region located away from the virtual reference line SL extending in the first direction A1 from the center of the inlet end 110 of the inlet head 100 It is more likely to occur in channel 220b. That is, since the flow path F1 when the fluid entering the inlet 110 moves to the channel close to the virtual reference line SL has a linear shape, the flow resistance of the fluid at the channel inlet may be small.

On the other hand, when the fluid entering the inlet has a flow path F2 entering the second edge region channel 220b, the flow angle increases, so the flow resistance of the fluid at the channel inlet increases, and the flow Peeling may occur.

To solve this, in this embodiment, the front ends of the channels 221 to 226 included in the second edge region channel 220b are formed to protrude toward the inlet end 110, and in particular, the second edge region channel 220b ), the front end of the channels 221 to 226 included in the sidewall 210b is formed to protrude toward the sidewall 210b, thereby reducing the flow resistance of the fluid flowing into the second edge region channel 220b, through which flow separation It can reduce the occurrence of phenomena.

The front ends of the channels 221 to 226 included in the second edge region channel 220b may be formed to increase linearly toward the sidewall 210b, but is not limited thereto.

Further, the first edge region channel 220a may be formed such that its front end is positioned on the same line as the front end of the center region channel 230.

That is, when the channel included in the first edge area channel 220a and the rear end of the channel included in the center area channel 230 are positioned on a line provided in the second direction A2, the first edge area channel The length of the channel included in 220a and the length of the channel included in the central region channel 230 may be the same.

Meanwhile, as shown in (a) of FIG. 2, the channel provided in the heat exchange part 200 may be formed such that the front end of the channel protrudes in a round shape.

Alternatively, as shown in (b) of FIG. 2, the channel provided in the heat exchange part 200 may be formed such that the front end of the channel protrudes in a wedge shape.

Since the front end of the channel 201 is formed to protrude in a round shape or a wedge shape, the flow resistance of the fluid entering the inlet head portion 100 and flowing into the heat exchange portion 200 may be reduced.

3 is an exemplary view for explaining the pressure change in the printed board type heat exchange plate according to the first embodiment of the present invention, and FIG. 4 is a diagram illustrating the flow rate of each channel of the printed board type heat exchange plate according to the first embodiment of the present invention. Fig. 4(a) shows the flow rate of fluid flowing into the channel in a conventional printed board type heat exchange plate having a heat exchange part in a state in which the front end of the channel is flat and protruded equally, and Fig. 4(b) ) Shows the flow rate of the fluid flowing into the channel in the printed board type heat exchange plate according to the present embodiment.

Hereinafter, it will be described further including FIGS. 3 and 4.

First, as shown in FIG. 3, the fluid entering the inlet end 110 moves to the outlet end 130 through the head chamber 120.

However, the head chamber 120 is formed to have a larger cross-sectional area toward the rear, and a part of the rear end of the head chamber 120 is blocked by the closing portion 21. Accordingly, some of the fluid entering the head chamber 120 may be blocked by the closing portion 21 and thus flow may be stagnated, and the pressure inside the head chamber 120 may increase.

In this state, when the front end of the channel is not in a round shape or a wedge shape, but in a flat shape along the second direction A2 as in the prior art, the fluid in the head chamber 120 passes through the outlet end 130 and the channel 201 ), the fluid resistance further increases, and thus, the pressure inside the head chamber 120 is further increased.

In FIG. 4, the horizontal axis of the graph represents a channel, the leftmost channel in the graph is the lowermost channel when referring to FIG. 2, and the rightmost channel in the graph is the uppermost channel when referring to FIG. 2. And, the vertical axis of the graph represents the flow velocity.

Referring to FIG. 4A, a relatively fast inflow velocity B1 occurs in a channel disposed relatively close to the sidewall 210b due to the flow separation phenomenon.

However, in the present invention, the front end of the channel 201 is formed to protrude in a round shape or a wedge shape, so that the flow resistance of the fluid moving between the channels 201 is lower than when the front end of the channel is flat. In addition, by making the front end of the channel included in the second edge region channel 220b protrude in the direction of the inlet end 110, the degree of separation of the flow may be reduced so that the flow becomes uniform.

That is, referring to FIG. 4B, a uniform inflow velocity may occur in the entire channel including channels disposed relatively close to the sidewall. In this way, the flow rate can be uniform over the entire channel, so heat transfer can be evenly achieved.

The protruding length L2 of the second edge region channel 220b may increase proportionally as the length L1 of the closing portion 21 in the second direction increases. Through this, even if the flow rate of the fluid toward the second edge region channel 220b further increases due to an increase in the second length L1 of the closing portion 21, the flow separation in the second edge region channel 220b can be effectively alleviated. I can.

5 is an exemplary view schematically showing a printed board type heat exchange plate according to a second embodiment of the present invention, and FIG. 6 is a plan view showing a center of a channel of a printed board type heat exchange plate according to a second embodiment of the present invention. . In this embodiment, the shape of the exit end may be different, and description of the same contents as in the first embodiment will be omitted as much as possible.

5 and 6, the printed board type heat exchange plate 1010 may include an inlet head part 1100 and a heat exchange part 1200.

A fluid may be introduced through the inlet head unit 1100, and the fluid flowing into the inlet head unit 1100 may be distributed and moved to the heat exchange unit 1200. In addition, the printed circuit board type heat exchange plate 1010 may include a discharge head unit 1300, and a fluid distributed and moved by the heat exchange unit 1200 and heat exchanged may be discharged through the discharge head unit 1300.

In addition, the printed board heat exchanger may include a printed board heat exchange plate 1010 stacked and provided, and a housing 1020 receiving and fixing the printed board heat exchange plate 1010 stacked therein.

The inlet head 1100 may have an inlet end 1110, a head chamber 1120, and an outlet end 1130, and a fluid may enter the inlet end 1110. The head chamber 1120 may be connected to the rear end of the inlet end 1110, and the fluid entering the inlet end 1110 may move to the head chamber 1120. The outlet end 1130 may be connected to the rear end of the head chamber 1120, and the fluid entering the inlet 1110 and moving to the head chamber 1120 may be discharged to the outlet 1130.

In this embodiment, the exit end 1130 may be formed to be symmetrical about the virtual reference line SL extending in the first direction A1 from the center of the entrance end 1110.

In addition, the heat exchange unit 1200 may have a first edge region channel 1220a, a second edge region channel 1220b, and a center region channel 1230.

Since the exit end 1130 is formed to be symmetrical with the entrance end 1110 around the virtual reference line SL, the first edge region channel 1220a and the second edge region channel 1220b are formed to be symmetrical to each other. I can.

Further, in the present embodiment, the first edge region channel 1220a and the second edge region channel 1220b may be formed such that a front end portion of the center region channel 1230 protrudes toward the inlet end 1110.

In addition, front ends of the channels included in the first edge area channel 1220a and the second edge area channel 1220b may be formed to protrude toward the adjacent sidewalls 1210a and 1210b, respectively.

In this embodiment, since the center of the outlet end 1130 is symmetrical with the center of the inlet end 1110, the first edge region channel 1220a and the second edge region channel 1220b have the same level of flow separation. This can happen.

To solve this, in the present embodiment, the front ends of the channels included in the first edge area channel 1220a and the second edge area channel 1220b are formed to protrude in the direction of the inlet end 1110, and in particular, It is possible to reduce the flow resistance of the fluid flowing into the first edge region channel 1220a and the second edge region channel 1220b by making the front end protrude toward the adjacent sidewalls 1210a and 1210b. Flow separation can be effectively relieved.

7 is a graph for explaining the speed of each channel of the printed board type heat exchange plate according to the second embodiment of the present invention. FIG. 7 (a) is a conventional heat exchanger having a flat and equally protruding front end of the channel. Figure 7(b) shows the flow rate of fluid flowing into the channel in the printed board type heat exchange plate of FIG. 7(b).

First, referring to FIG. 7A, relatively fast inflow velocities B2 and B3 are generated in both channels disposed relatively close to the sidewall due to the flow separation phenomenon.

However, as shown in (b) of FIG. 7, according to the present embodiment, the front ends of the channels included in the first edge area channel 1220a and the second edge area channel 1220b are respectively directed toward the inlet end 1110. By making it protrude, a uniform inflow rate can be generated in the entire channel 1201 of the heat exchange part 1200. In addition, since the flow rate can be uniform for all channels, heat transfer can be made evenly.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains can understand that it is possible to easily transform it into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and the concept of equivalents thereof should be interpreted as being included in the scope of the present invention.

10, 1010: printed board type heat exchanger plate
20, 1020: housing
21: closure
100, 1100: inlet head
200, 1200: heat exchange part
201, 1201: channel
210a, 210b, 1210a, 1210b: side wall
220a, 1220a: first edge region channel
220b, 1220b: second edge region channel
230, 1230: center area channel
300, 1300: discharge head

Claims (9)

An inlet head portion having an inlet end through which the fluid enters, a head chamber through which the fluid entering the inlet end is moved, and an outlet end through which the fluid flowing into the head chamber is discharged; And
A heat exchanger having a plurality of channels connected to the outlet and extending along a first direction to distribute and move the flowing fluid, and having a plurality of channels spaced apart from each other along a second direction crossing the first direction,
The exit end is formed to be asymmetrical around a virtual reference line extending in the first direction from the center of the entrance end,
The heat exchange unit includes a first edge region channel and a second edge region channel disposed adjacent to sidewalls provided in the first direction on both sides,
And a center area channel disposed between the first edge area channel and the second edge area channel,
The printed board type heat exchange plate, wherein the second edge region channel disposed further from the virtual reference line has a front end portion protruding toward the inlet end than the center region channel. delete The method of claim 1,
The plurality of channels is a printed board type heat exchange plate, characterized in that the front end is formed to protrude in a round shape. The method of claim 1,
The plurality of channels is a printed board type heat exchange plate, characterized in that the front end is formed to protrude in a wedge shape. The method of claim 1,
A printed board type heat exchange plate, characterized in that the front end of the second edge region channel is formed to protrude toward the adjacent side wall. The method of claim 1,
The outlet end of the inlet head is divided into an open part connected to the plurality of channels and a closed part not connected to the plurality of channels,
As the length of the closing portion in the second direction increases, the protruding length of the second edge region channel also increases proportionally. delete The printed circuit board type heat exchange plate described in any one of claims 1, 3 to 6 and provided by stacking a plurality of them in the vertical direction; And
A printed circuit heat exchanger comprising a housing for accommodating and fixing the printed circuit heat exchanger plates stacked therein. delete

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