KR20240051753A - Tray structure for heat exchanger and heat exchanger including the same - Google Patents

Abstract

The present invention relates to a tray structure for a heat exchanger and a heat exchanger including the same. More specifically, it relates to a tray structure for a heat exchanger including a first fin and a second fin and a heat exchanger including the same.
According to the present invention, the length of the flow path of the refrigerant is increased by the first fin and the second fin, thereby providing a tray structure for a heat exchanger in which gaseous refrigerant and liquid refrigerant can be effectively separated, and a heat exchanger including the same. There is an advantage to being able to do this.

Description

Tray structure for heat exchanger and heat exchanger including the same {Tray structure for heat exchanger and heat exchanger including the same}

The present invention relates to a tray structure for a heat exchanger and a heat exchanger including the same. More specifically, it relates to a tray structure for a heat exchanger including a first fin and a second fin and a heat exchanger including the same.

Generally, an evaporator is a device that evaporates refrigerant through a heat exchange process. Cold water flows inside the evaporator and exchanges heat with the refrigerant, so that the refrigerant evaporates and the cold water is cooled and discharged.

Depending on the method, these evaporators can be roughly divided into flooded type evaporators and falling film type evaporators. In a flooded evaporator, the refrigerant comes into contact with a tube while filled inside the housing, and the refrigerant evaporates through heat exchange with the tube.

In contrast, the falling liquid film evaporator is a method in which a mixed gas and liquid refrigerant flows into the housing, and then the separated liquid refrigerant falls into a tube, forming a liquid film on the surface of the tube and evaporating the refrigerant. The falling liquid film evaporator has the advantage of being able to be operated at low cost compared to the flooded liquid evaporator.

In a falling liquid film evaporator, it is important that the gaseous refrigerant and liquid refrigerant are effectively separated from each other. Otherwise, if the refrigerant is not properly separated, liquid refrigerant may flow into the compressor, which may cause compressor failure.

Republic of Korea Public Patent No. 10-2017-0114320

Based on the technical background described above, the present invention provides a tray structure for a heat exchanger that can effectively separate gaseous refrigerant and liquid refrigerant, and a heat exchanger including the same.

The tray structure for a heat exchanger according to an embodiment of the present invention is a tray structure for a heat exchanger installed in a heat exchanger in which a gaseous and liquid mixed refrigerant flows into the inlet, and then the gaseous refrigerant is separated and discharged to the outlet, comprising a first tray and a second tray. Includes 1st pin and 2nd pin. The first tray is disposed inside the heat exchanger, communicates with the inlet and outlet of the heat exchanger through which the refrigerant flows, has a first lower hole formed at the bottom, and has first inner surfaces and first inner surfaces facing each other on one side and the other side of the interior. The second medial surface is formed. The first fin extends from the first inner side toward the second inner side. The second fin includes a second fin extending from the second inner side toward the first inner side.

Additionally, at least one first pin and one second pin are provided, and the first pin and second pin may be arranged alternately along the direction toward the inlet and outlet.

Additionally, the tip portions of each of the first pin and the second pin may be formed to extend beyond the center of the width direction of the first tray.

In addition, it further includes a second tray disposed below the first tray, where the upper part of the second tray communicates with the first lower hole, and a second lower hole may be formed in the lower part of the second tray.

Additionally, the first tray may have a first demister disposed in a portion communicating with the outlet of the heat exchanger through which gaseous refrigerant passes and liquid refrigerant is separated.

Additionally, the first tray may have a second demister disposed below and outside the first tray in the width direction through which gaseous refrigerant passes and liquid refrigerant is separated.

In addition, it may further include a third pin disposed inside the first tray and extending vertically.

Additionally, the third fin may be disposed around the outlet of the heat exchanger.

A heat exchanger according to an embodiment of the present invention includes a housing, an inlet, an outlet, a cold water pipe, a first tray, a first fin, and a second fin. The housing forms the outer shape. The inlet is formed in the housing through which gaseous and liquid mixed refrigerant flows. The outlet is formed by separating and discharging the gaseous refrigerant and being spaced apart from the inlet in the housing. The cold water pipe is disposed inside the housing, and cold water flows through it. The first tray is disposed inside the housing, communicates with the inlet and outlet through which the refrigerant flows, has a first lower hole formed in the lower part, and has a first inner surface and a second inner surface facing each other on one side and the other side of the interior. This is formed. The first fin extends from the first inner side toward the second inner side. The second fin extends from the second inner side toward the first inner side.

In addition, the inlet and outlet are respectively disposed at the top of the housing, the cold water pipe is disposed below the first tray, and a drain pipe through which liquid refrigerant is discharged may be further disposed below the cold water pipe.

The tray structure for a heat exchanger and a heat exchanger including the same according to the present invention can provide a tray structure for a heat exchanger that includes first fins and second fins and can effectively separate gaseous refrigerant and liquid refrigerant, and a heat exchanger including the same. .

Figure 1 is a perspective view showing the overall appearance of a heat exchanger according to a first embodiment of the present invention.
Figure 2 is an enlarged perspective view of a portion of the tray structure for a heat exchanger according to the first embodiment of the present invention.
Figure 3 is a plan view showing the inside of a heat exchanger according to the first embodiment of the present invention.
Figure 4 is a rear view showing the inside of a heat exchanger according to the first embodiment of the present invention.
Figure 5 is a perspective view showing the overall appearance of the heat exchanger according to the second embodiment of the present invention.
Figure 6 is an enlarged perspective view of a portion of the tray structure for a heat exchanger according to the second embodiment of the present invention.
Figure 7 is a rear view showing the inside of a heat exchanger according to a second embodiment of the present invention.
Figure 8 is a perspective view showing the overall appearance of the heat exchanger according to the third embodiment of the present invention.
Figure 9 is an enlarged perspective view of a portion of the tray structure for a heat exchanger according to the third embodiment of the present invention.
Figure 10 is a side cross-sectional view showing the interior of a heat exchanger according to a third embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be exemplified and explained in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention. The terms used in the present invention 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 dictates otherwise. In the present invention, terms such as 'include' or 'have' are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. At this time, note that in the attached drawings, identical components are indicated by identical symbols whenever possible. Additionally, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically shown in the accompanying drawings.

Hereinafter, with reference to the attached drawings, a tray structure for a heat exchanger and a heat exchanger including the same according to an embodiment of the present invention will be described in detail.

Figure 1 is a perspective view showing the overall appearance of the heat exchanger according to the first embodiment of the present invention, Figure 2 is an enlarged perspective view showing a portion of the tray structure for the heat exchanger according to the first embodiment of the present invention, and Figure 3 is It is a plan view showing the inside of the heat exchanger according to the first embodiment of the present invention, and Figure 4 is a rear view showing the inside of the heat exchanger according to the first embodiment of the present invention.

Hereinafter, with reference to FIGS. 1 to 4, a tray structure for a heat exchanger 1000 according to a first embodiment of the present invention and a heat exchanger 1000 including the same will be described. The heat exchanger 1000 according to an embodiment of the present invention includes a housing 1110 and a cold water pipe 1140, and a tray structure is installed inside the heat exchanger 1000. The tray structure refers to a structure composed of components of the heat exchanger 1000 excluding the housing 1110 and the cold water pipe 1140.

The housing 1110 forms the overall appearance of the heat exchanger 1000. The overall external shape of the housing 1110 may be cylindrical and elongated in the longitudinal direction. An inlet 1120 and an outlet 1130 are formed in the housing 1110.

A mixed refrigerant containing a mixture of gas and liquid flows into the inlet 1120. Of course, the refrigerant flowing in from the inlet 1120 may be a liquid refrigerant in a supercooled state. However, hereinafter, for convenience of explanation, it is assumed that the state of the refrigerant flowing in from the inlet 1120 is saturated, and gas and liquid are present at the inlet 1120. This explanation assumes that a mixed refrigerant is introduced.

Gas refrigerant is discharged from the outlet 1130. The mixed refrigerant flowing in from the inlet 1120 is separated into gaseous refrigerant and liquid refrigerant inside the heat exchanger 1000 to housing 1110, and the gaseous refrigerant is discharged to the outlet 1130, and the liquid refrigerant is discharged through the cold water pipe ( It is evaporated at 1140 and discharged to the outlet 1130.

The inlet 1120 and outlet 1130 may be disposed on the upper side of the housing 1110. The inlet 1120 and the outlet 1130 may be arranged to be spaced apart from each other on one side and the other side of the upper side of the housing 1110, respectively. The inlet 1120 may be placed in the central portion of the upper side of the housing 1110. In this case, the mixed refrigerant flowing in from the inlet 1120 may be distributed and flow on both sides of the housing 1110.

A cold water pipe 1140 is disposed inside the housing 1110. The cold water pipe 1140 may be composed of a bundle of a plurality of pipes. The cold water pipe 1140 may be disposed on the lower side of the housing 1110. Inside the cold water pipe 1140, cold water supplied from outside flows. Among the gas and liquid mixed refrigerant flowing inside the housing 1110, the liquid refrigerant falls into the cold water pipe 1140 and forms a liquid film on the surface of the cold water pipe 1140. The refrigerant formed as a liquid film in the cold water pipe 1140 exchanges heat with cold water flowing inside the cold water pipe 1140 and evaporates. The evaporated gaseous refrigerant is discharged through the outlet 1130 of the housing 1110.

Meanwhile, a drain pipe (not shown) may be further disposed on the lower side of the housing 1110. Among the liquid refrigerants separated from the mixed refrigerant flowing into the housing 1110, the liquid refrigerant that has not yet evaporated will be discharged to the outside of the housing 1110 through a drain pipe (not shown) disposed on the lower side of the housing 1110. You can. At this time, the liquid refrigerant may accumulate on the lower side of the housing 1110 by gravity and then be discharged to the outside.

A tray structure is installed inside the heat exchanger 1000. In the tray structure, at least some of the gaseous refrigerant among the mixed refrigerant is separated. The tray structure includes a first tray 1200. The first tray 1200 is disposed inside the housing 1110. A cold water pipe 1140 is disposed below the first tray 1200. The first tray 1200 is in communication with the inlet 1120 and outlet 1130 of the housing 1110, so that the refrigerant flows therein.

The first tray 1200 may be formed to extend long along the longitudinal direction of the housing 1110. The first tray 1200 consists of a lower part and a side wall. A first lower hole 1230 is formed in the lower part. The first lower hole 1230 may be formed vertically through. Mixed refrigerant or liquid refrigerant passes through the first lower hole 1230.

The side wall of the first tray 1200 may be composed of a first side wall and a second side wall. The first side wall and the second side wall are spaced apart and arranged to face each other. Here, the inner surface of the first side wall is the first inner surface 1210, and the inner surface of the second side wall is the second inner surface 1220.

A first fin 1240 is formed on the first inner surface 1210. The first pin 1240 is a pin extending from the first inner surface 1210 toward the second inner surface 1220. A second fin 1250 is formed on the second side wall. The second pin 1250 is a pin extending from the second inner side 1220 toward the first inner side 1210.

At least one first pin 1240 and at least one second pin 1250 may be provided. The first pin 1240 and the second pin 1250 may be arranged alternately. That is, the second fin may be disposed between the first pins 1240, and the first pin 1240 may be disposed between the second pins 1250.

The mixed refrigerant flows from the housing 1110 to the inlet 1120 and flows to the outlet 1130. During the flow, the gaseous refrigerant is separated and discharged through the outlet 1130 of the housing 1110. Here, the mixed refrigerant or liquid refrigerant that is not separated moves downward, and the liquid refrigerant falls into the cold water pipe 1140. At this time, the longer the length of the refrigerant flow path, the more effectively the separation of gaseous refrigerant and liquid refrigerant is achieved.

As described above, when the first fin 1240 and the second fin 1250 are arranged alternately, the mixed refrigerant flowing into the inlet 1120 of the housing 1110 flows to the outlet 1130. The length of the flow path increases. Accordingly, separation of gaseous refrigerant and liquid refrigerant can be effectively achieved.

In addition, while the refrigerant passes through the first pin 1240 and the second pin 1250, the refrigerant rotates and moves. When moving while rotating, centrifugal force acts on the refrigerant, and thus, depending on the density difference, the refrigerant may be centrifugally separated into gas and liquid. Because of this, separation of the mixed refrigerant can be achieved more effectively.

The tip portions of each of the first pin 1240 and the second pin 1250 may be formed to extend beyond the center of the width direction of the first tray 1200. In this case, the tip of one of the first pins 1240 may be formed to extend toward the second inner surface 1220 beyond the virtual straight line connecting the tip of each of the two adjacent second pins 1250. . In this case, the tip of one of the second pins 1250 may be formed to extend toward the first inner surface 1210 beyond the virtual straight line connecting the tip of each of the two adjacent first pins 1240. . Additionally, in this case, when the tray is viewed from the front or rear of the tray, the first pin 1240 and the second pin 1250 appear to overlap at least a portion of each other.

As described above, when the tip portions of each of the first pin 1240 and the second pin 1250 are formed to extend beyond the center of the width direction of the first tray 1200, the inside of the first tray 1200 The length of the flow path of the refrigerant flowing in can be maximized.

A second tray 1300 may be placed below the first tray 1200. The upper part of the second tray 1300 may communicate with the first lower hole 1230 of the first tray 1200. That is, a hole corresponding to and communicating with the first lower hole 1230 may be formed in the upper part of the second tray 1300, or the upper part of the second tray 1300 may be open. A second lower hole 1310 may be formed vertically through the lower portion of the second tray 1300. Refrigerant flows inside the second tray 1300, of which the separated gaseous refrigerant rises and the liquid refrigerant falls.

Like the first tray 1200, the second tray 1300 may be formed to extend long along the longitudinal direction of the housing 1110. The width of the second tray 1300 may be larger than the width of the first tray 1200.

When the second tray 1300 is provided, the cold water pipe 1140 may be placed below the second tray 1300. In this case, liquid refrigerant may fall from the second lower hole 1310 of the second tray 1300 into the cold water pipe 1140. Additionally, the width of the second tray 1300 may be formed to correspond to the width of the cold water pipe 1140 bundle.

Figure 5 is a perspective view showing the overall appearance of the heat exchanger according to the second embodiment of the present invention, Figure 6 is an enlarged perspective view of a portion of the tray structure for the heat exchanger according to the second embodiment of the present invention, and Figure 7 is This is a rear view showing the inside of the heat exchanger according to the second embodiment of the present invention.

Hereinafter, with reference to FIGS. 5 to 7, the tray structure for the heat exchanger 1000 according to the second embodiment of the present invention and the heat exchanger 1000 including the same will be described in detail. The tray structure for the heat exchanger 1000 according to the second embodiment of the present invention and the heat exchanger 1000 including the same have the first demister 1410 and/or the second demister 1420. The tray structure for the heat exchanger 1000 according to the embodiment and the heat exchanger 1000 including the same are the same. Accordingly, hereinafter, the tray structure for the heat exchanger 1000 according to the first embodiment of the present invention and the same parts as the heat exchanger 1000 including the same are omitted since they are redundant descriptions.

The tray structure for the heat exchanger 1000 according to the second embodiment of the present invention may further include a first demister 1410 and/or a second demister 1420. The first demister 1410 is configured to allow gaseous refrigerant to pass through and separate liquid refrigerant. When the gas and liquid mixed refrigerant passes through the first demister 1410, the gas refrigerant passes as is, and the liquid refrigerant is separated and filtered. When more than a certain amount of the separated liquid refrigerant is contained in the first demister 1410, it falls. Through this process, the gas refrigerant and the liquid refrigerant can be separated in the first demister 1410. The second demister 1420 can also separate gaseous refrigerant and liquid refrigerant in the same way as the first demister 1410. Liquid refrigerant that has not yet been separated from the refrigerant may be separated through the first demister 1410 and/or the second demister 1420.

The first demister 1410 may be disposed on the outlet 1130 side of the housing 1110. The first demister 1410 may be disposed in a portion of the first tray 1200 that communicates with the outlet 1130 of the housing 1110. That is, the first demister 1410 may be disposed on the refrigerant flow path on the outlet 1130 side of the housing 1110. The first tray 1200 may be formed in a size corresponding to the outlet 1130, or may be formed in a size that can completely cover the outlet 1130. Alternatively, it may be formed and arranged to cover only a portion of the flow path on the outlet 1130 side.

The second demister 1420 may be disposed below the first tray 1200 and outside the first tray 1200 in the width direction. The second demister 1420 may be disposed on both sides of the first tray 1200. The second demister 1420 may be formed to extend from the first tray 1200 to the inner surface of the housing 1110, and the second demister 1420 may be formed to extend from the first tray 1200 and the inner surface of the housing 1110. It may be formed and arranged so that it can all contact. Alternatively, the second demister 1420 may be formed and arranged to occupy only a portion of the space between the first tray 1200 and the inner surface of the housing 1110.

The second demister 1420 may be disposed above the cold water pipe 1140. And, when the second tray 1300 is provided and the width of the second tray 1300 is larger than the width of the first tray 1200, the second demister 1420 corresponds to the second tray 1300. It can also be placed at any height.

Figure 8 is a perspective view showing the overall appearance of the heat exchanger according to the third embodiment of the present invention, Figure 9 is an enlarged perspective view of a portion of the tray structure for the heat exchanger according to the third embodiment of the present invention, and Figure 10 is This is a side cross-sectional view showing the inside of a heat exchanger according to a third embodiment of the present invention.

Hereinafter, with reference to FIGS. 8 to 10, a tray structure for a heat exchanger 1000 according to a third embodiment of the present invention and a heat exchanger 1000 including the same will be described in detail. The tray structure for the heat exchanger 1000 according to the third embodiment of the present invention and the heat exchanger 1000 including the same are the heat exchanger according to the first or second embodiment except for the third fin 1260. It is the same as the tray structure for (1000) and the heat exchanger (1000) including it. Accordingly, hereinafter, the tray structure for the heat exchanger 1000 according to the first or second embodiment of the present invention and the same parts as the heat exchanger 1000 including the same are omitted since they are redundant descriptions.

The tray structure according to the third embodiment of the present invention further includes a third pin 1260. The third pin 1260 is disposed on the first tray 1200. The third fin 1260 is formed to extend in the vertical direction. The width of the third pin 1260 may match the inner width of the first tray 1200. The third pin 1260 changes the flow of refrigerant in the up and down direction. Accordingly, the length of the refrigerant flow path can be further increased.

The third pin 1260 may be disposed on the upper side of the first tray 1200 and have a tip extending downward. In this case, after the flow of refrigerant is guided downward, the flow direction is changed and the refrigerant may flow upward again.

The third pin 1260 may be disposed around the outlet 1130 of the housing 1110. When the third fin 1260 is disposed at the outlet 1130, the flow of refrigerant that has passed through the first fin 1240 and the second fin 1250 flows upward and downward again just before being discharged through the outlet 1130. This can be converted. Additionally, during this process, liquid refrigerant that has not been separated may hit the third pin 1260 and form condensation.

A plurality of third pins 1260 may be provided. The third pin 1260 may be disposed not only at a position adjacent to the outlet 1130 of the housing 1110 in the first tray 1200, but also between the first pin 1240 and the second pin 1250.

Above, an embodiment of the present invention has been described, but those skilled in the art can add, change, delete or add components without departing from the spirit of the present invention as set forth in the patent claims. The present invention may be modified and changed in various ways, and such modifications and changes will also be included within the scope of the rights of the present invention.

1000: heat exchanger
1110: housing
1120: Entrance
1130: Exit
1140: Cold water piping
1200: 1st tray
1210: 1st medial side
1220: 2nd medial side
1230: 1st lower hole
1240: 1st pin
1250: 2nd pin
1260: 3rd pin
1300: 2nd tray
1310: 2nd lower hole
1410: 1st demister
1420: 2nd demister

Claims (10)

In the tray structure for a heat exchanger installed in a heat exchanger in which a gaseous and liquid mixed refrigerant flows into the inlet, and then the gaseous refrigerant is separated and discharged to the outlet,
It is disposed inside the heat exchanger, is in communication with the inlet and the outlet of the heat exchanger, so that the refrigerant flows, and a first lower hole is formed in the lower part, and on one side and the other side of the interior, first inner surfaces facing each other and A first tray on which a second inner side is formed;
a first pin extending from the first inner side toward the second inner side; and
A tray structure for a heat exchanger including a second fin extending from the second inner side toward the first inner side.
According to paragraph 1,
The first pin and the second pin are each provided at least one,
The first pin and the second pin are
A tray structure for a heat exchanger arranged alternately along a direction toward the inlet and the outlet.
According to paragraph 2,
The tip of each of the first pin and the second pin is,
A tray structure for a heat exchanger formed to extend beyond the width direction center of the first tray.
According to paragraph 1,
Further comprising a second tray disposed below the first tray,
The second tray is,
The upper part communicates with the first lower hole,
A tray structure for a heat exchanger in which a second lower hole is formed in the lower part of the second tray.
According to paragraph 1,
The first tray is,
A tray structure for a heat exchanger in which a first demister through which gaseous refrigerant passes and liquid refrigerant is separated is disposed in a portion communicating with the outlet of the heat exchanger.
According to paragraph 1,
The first tray is,
A tray structure for a heat exchanger in which a second demister is disposed below and outside the first tray in the width direction through which gaseous refrigerant passes and liquid refrigerant is separated.
According to paragraph 1,
A tray structure for a heat exchanger further comprising a third fin disposed inside the first tray and extending vertically.
In clause 7,
The third pin is,
A tray structure for a heat exchanger disposed around the outlet of the heat exchanger.
A housing that forms an outline;
an inlet formed in the housing through which a gaseous and liquid mixed refrigerant flows;
an outlet through which gaseous refrigerant is separated and discharged, and which is formed in the housing to be spaced apart from the inlet;
a cold water pipe disposed inside the housing and through which cold water flows;
It is disposed inside the housing, communicates with the inlet and the outlet so that the refrigerant flows, a first lower hole is formed in the lower part, and a first inner surface and a second inner surface facing each other are formed on one side and the other side of the interior. A first tray formed;
a first pin extending from the first inner side toward the second inner side; and
A heat exchanger including a second fin extending from the second inner side toward the first inner side.
According to clause 9,
The inlet and the outlet are each disposed at an upper part of the housing,
The cold water pipe is disposed below the first tray,
A heat exchanger in which a drain pipe through which liquid refrigerant is discharged is further disposed below the cold water pipe.

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