KR20150088151A - Flat type refrigerator - Google Patents

Abstract

The present invention relates to a planar heat exchanger. The planar heat exchanger comprises: a heat exchanging tube bank arranging a plurality of heat exchanging tubes in a row direction and a transverse direction, receiving a refrigerant to guide a flow of the coolant; an upper header provided on an upper side of the heat exchanging tubes arranged in the same row direction, sequentially guiding a flow of coolant to the heat exchanging tube in the row direction; and a lower header provided on a lower side of the heat exchanging tubes arranged on the same row direction, sequentially guiding the flow of coolant to the heat exchanging tube in the row direction. A channel connects the lower headers adjacent to each other in the transverse direction. The coolant passage is formed in multi-stages in the heat exchanger unlike in an existing technique in order to reduce material costs and processing costs, and improve heat exchange efficiency.

Description

[0001] FLAT TYPE REFRIGERATOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flat plate type heat exchanger, and more particularly, to a flat plate type heat exchanger in which a refrigerant flow path is constituted in multiple stages in a heat exchanger, thereby reducing material and processing costs and improving heat exchange efficiency.

And conveys heat to perform a heating or cooling action on a fluid required by a system such as an air conditioner.

The plate-type heat exchanger is a device that allows a heat fluid flow path formed by a heat transfer plate having a large heat transfer area and a fluid having a temperature difference to flow to a fluid flow path to be heated to cause heat exchange between the respective fluids.

Such a plate heat exchanger is higher in heat exchange efficiency than other heat exchangers, and can be made smaller and lighter in its structure, and its application is increasing in the field of a heat exchanger including an air conditioner and a heat pump.

Particularly, the flat plate type heat exchanger is constituted by two openings, and the refrigerant flowing into one side and the heat-exchanged refrigerant flows out to the opposite side. At this time, the tube is separated to allow a large amount of refrigerant to flow, and the refrigerant is configured to be introduced using a distributor.

The high-temperature and high-pressure refrigerant gas discharged from the compressor flows through the condenser, is liquefied, passes through the expander, and then flows into the evaporator. The refrigerant that has passed through the refrigerant inlet pipe is divided into a plurality of refrigerant by the refrigerant distributor and flows into the evaporator. The refrigerant flow path generally evaporates while passing through the front and rear surfaces, and then the refrigerant is discharged to the refrigerant outflow tube.

The plate heat exchanger is proposed in Korean Patent Registration No. 10-0305865 entitled Plate Absorber of Absorption Heat Pump.

Conventional plate type heat exchangers are configured such that refrigerant is distributed in a plurality of rows through a distributor, so that material cost and processing cost are high and it is difficult to circulate.

Therefore, there is a need to improve this.

Disclosure of the Invention The present invention has been conceived to overcome the above problems and provides a flat plate type heat exchanger in which a heat exchange tube is arranged so as to constitute a multi-stage refrigerant channel in a heat exchanger, thereby reducing material and processing costs and improving heat exchange efficiency It has its purpose.

It is another object of the present invention to provide a flat plate heat exchanger in which a heat exchange tube is formed in a flat shape to widen the surface area to further improve heat exchange efficiency.

The plate-type heat exchanger according to the present invention comprises: a heat exchange tube group formed by arranging a plurality of heat exchange tubes respectively in a heat direction and a transverse direction and being flow-guided by receiving refrigerant; An upper header for guiding the flow of the refrigerant in order to the heat exchange tubes in the column direction, and a lower header provided below the heat exchange tubes corresponding to the same column direction and guiding the flow of the refrigerant sequentially to the heat exchange tubes in the column direction do.

The lower transverse header adjacent to the transverse direction may be connected to the channel for supplying the refrigerant discharged from the corresponding heat exchange tube to the neighboring heat exchange tubes.

The heat exchange tubes are preferably flat.

The upper header is preferably arranged in parallel so as to be separated from each other.

The heat exchange tube located at one side edge of the outermost row has a supply port for receiving refrigerant, and the heat exchange tube located at one side or the other edge of the heat exchanger tube has a discharge port for discharging the refrigerant.

The flat plate type heat exchanger according to the present invention can reduce the material and processing costs and improve the heat exchange efficiency by arranging the heat exchange tubes so as to constitute multi-stage refrigerant channels in the heat exchanger.

In addition, the present invention can further improve the heat exchange efficiency by forming the heat exchange tube in a flat shape to widen the surface area.

1 is a perspective view of a flat plate type heat exchanger according to an embodiment of the present invention.
2 is an exploded perspective view of a planar heat exchanger according to an embodiment of the present invention.
3 is a cross-sectional view taken along line AA of a planar type heat exchanger according to an embodiment of the present invention.
4 is a cross-sectional view taken along line BB of the planar type heat exchanger according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a planar heat exchanger according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a plate type heat exchanger according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a plate type heat exchanger according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along line AA of a planar type heat exchanger according to an embodiment of the present invention, and FIG. 4 is a sectional view taken along line BB of a planar type heat exchanger according to an embodiment of the present invention.

1 to 4, a planar type heat exchanger 10 according to an embodiment of the present invention includes a heat exchange tube group 20, an upper header 32, 34, and a lower header 42, 44 .

The heat exchange tube group 20 is formed by disposing a plurality of heat exchange tubes 22, 24, 26, 28 in the heat (crack) direction and transverse (橫) direction, respectively. For convenience, two heat exchange tubes 22-28 are arranged in the column direction, and two heat exchange tubes 22-28 are arranged in the lateral direction. That is, the first heat exchange tube 22 and the second heat exchange tube 24 are disposed adjacent to each other in the front row, and the third heat exchange tube 26 and the fourth heat exchange tube 28 Are arranged adjacently.

In the transverse direction, the first heat exchange tube 22 and the fourth heat exchange tube 28 are disposed adjacent to each other, and the second heat exchange tube 24 and the third heat exchange tube 26 are disposed adjacent to each other. The first heat exchange tube 22 and the fourth heat exchange tube 28 are disposed on one side and the second heat exchange tube 24 and the third heat exchange tube 26 are disposed on the other side.

Accordingly, the first heat exchange tube 22, the second heat exchange tube 24, the third heat exchange tube 26, and the fourth heat exchange tube 28 are arranged in order clockwise.

Particularly, the contact portions of the first heat exchange tube 22, the second heat exchange tube 24, the third heat exchange tube 26 and the fourth heat exchange tube 28 are bonded to each other by welding or the like.

Of course, the number of the heat exchange tubes 22 to 28 is not limited.

The first heat exchange tube 22 disposed on the outside of the front side includes a supply port 23 for receiving the refrigerant and a fourth heat exchange tube 28 disposed on the outer side of the rear side or a third heat exchange tube The third heat exchange tube 26 has a discharge port 29 for discharging heat-exchanged refrigerant. For convenience, the outlet port 29 is shown as being provided in the fourth heat exchange tube 28.

The supply port 23 is provided below the first heat exchange tube 22 and the discharge port 29 is provided below the fourth heat exchange tube 28.

On the other hand, the upper header (32, 34) is provided by the number of columns of the heat exchange tube group (20). Thus, the upper header 32, 34 is provided on the upper side of the heat exchange tubes 22, 24 or 26, 28 corresponding to the same column direction and is arranged in the heat exchange tube 22, 24 or 26, And serves to guide the flow of the refrigerant.

At this time, since the heat exchange tubes 20 are arranged in two rows, the upper header 32 and the upper header 34 comprise the first upper header 32 and the second upper header 34, respectively.

That is, the first upper header 32 is disposed on the upper side of the first heat exchange tube 22 and the second heat exchange tube 24 to guide the refrigerant having passed through the first heat exchange tube 22, ). The second upper header 34 is disposed on the upper side of the third heat exchange tube 26 and the fourth heat exchange tube 28 to guide the refrigerant having passed through the third heat exchange tube 26, ).

More specifically, the refrigerant introduced into the first heat exchange tube 22 through the supply port 23 is discharged to the first upper side opening 21 opened to the upper side of the first heat exchange tube 22, (32). The refrigerant in the first header header 32 flows into the second heat exchange tube 24 through the second upper opening 24a opened to the upper side of the second heat exchange tube 24.

In particular, the first upper header 32 is sealed by welding or the like with the lower edge of the first heat exchange tube 22 and the edge of the second heat exchange tube 24. Similarly, the lower edge of the second upper header 34 is sealed by welding with the edges of the third heat exchange tube 26 and the fourth heat exchange tube 28, for example.

On the other hand, the lower header 42 and 44 are provided below the heat exchange tubes 22 and 24 or 26 and 28 corresponding to the same column direction, and are arranged in the heat exchange tubes 22 and 24 or 26 and 28 in order And serves to guide the flow of the refrigerant.

At this time, since the heat exchange tube groups 20 are arranged in two rows, the lower header 42 and 44 are composed of the first lower header 42 and the second lower header 44.

That is, the first lower header 42 is disposed below the first heat exchange tube 22 and the second heat exchange tube 24, and the second lower side opening 24b opened to the lower side of the second heat exchange tube 24 And the refrigerant discharged from the refrigerant circulation line is temporarily stored. The second lower header 44 is disposed below the third heat exchange tube 26 and the fourth heat exchange tube 28.

At this time, the adjacent transversely adjacent lower header 42 and 44 are connected to the channel 50 to supply the refrigerant discharged from the corresponding heat exchange tube 24 to the adjacent heat exchange tube 26.

The refrigerant discharged to the first lower header 42 through the second lower opening 24b flows through the channel 50 to the third lower opening 26b opened to the lower side of the third heat exchange tube 26 To the inside of the third heat exchange tube 26.

The refrigerant supplied into the third heat exchange tube 26 is transferred into the second upper header 34 through the third upper opening 26a of the third heat exchanger. Subsequently, the refrigerant transferred into the second header 34 passes through the fourth heat exchange tube 28 through the fourth upper opening 28a of the fourth heat exchange tube 28, and then flows through the discharge port 29 ≪ / RTI >

Particularly, the supply port 23 may be inserted into the first lower header 42 to be exposed downward, and the discharge port 29 may be inserted into the second lower header 44 to be exposed downward.

In addition, the first lower header 42 and the second lower header 44 may be fabricated to have one internal space without the channel 50.

On the other hand, since the number of heat exchange tubes 22 to 28 is smaller than that of conventional circular tube-shaped tubes, it is preferable that the tubes are formed in a flat shape to increase the surface area.

Since the refrigerant in the first upper header 32 and the second upper header 34 flows in different directions, the first upper header 32 and the second upper header 34 are partitioned from each other .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: Plate type heat exchanger 20: Heat exchange tube group
22: first heat exchange tube 24: second heat exchange tube
26: third heat exchange tube 28: fourth heat exchange tube
32, 34: first and second upper header 42, 44: first and second lower header
50: channel

Claims (4)

A heat exchange tube group formed by arranging a plurality of heat exchange tubes in each of a heat direction and a transverse direction,
An upper header disposed on the upper side of the heat exchange tubes corresponding to the same column direction and guiding the flow of the refrigerant sequentially to the heat exchange tubes in the column direction; And
And a lower header provided below the heat exchange tubes corresponding to the same column direction and guiding the flow of the refrigerant sequentially to the heat exchange tubes in the column direction,
And the lower header adjacent to each other in the set transverse direction is connected to the channel to supply the refrigerant discharged from the corresponding heat exchange tube to the neighboring heat exchange tubes.
The method according to claim 1,
Wherein the heat exchange tube is flat.
The method according to claim 1,
Wherein the upper header is arranged in parallel so as to be partitioned from each other.
4. The method according to any one of claims 1 to 3,
The heat exchange tube located at one side edge of the outermost row has a supply port for receiving refrigerant;
And the heat exchange tube located at one side or the other edge of the rear side column has a discharge port for discharging the refrigerant.

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