KR20150098835A - Condenser - Google Patents

Abstract

The present invention relates to a condenser and, more specifically, relates to a condenser formed to have a different number of tube holes on each path by taking a state of a refrigerant circulated on a tube into consideration; thereby minimizing pressure loss and maximizing heat transfer.

Description

Condenser

The present invention relates to a condenser, and more particularly, to a condenser capable of minimizing a pressure loss and maximizing heat transfer by forming tubes having different tube odds for each path in consideration of the state of refrigerant circulated in the tubes.

A heat exchanger is a device that absorbs one heat between two environments with temperature differences and releases heat to the other.

Generally, a heat exchange system is composed of an evaporator for absorbing heat from the surroundings, a compressor for compressing the heat exchange medium, a condenser for releasing heat to the surroundings, and an expansion valve for expanding the heat exchange medium, wherein evaporators and condensers are typical heat exchangers.

The gaseous refrigerant flowing into the compressor from the evaporator is compressed to a high temperature and a high pressure in the compressor, and the refrigerant in the compressed gaseous state passes through the condenser and is liquefied, and the liquefied heat is discharged to the periphery. After passing through the expansion valve, it becomes a low-temperature and low-pressure wetted vapor state, and then flows into the evaporator again to be vaporized to form a cycle.

As described above, in the condenser, the refrigerant in a gaseous state at a high temperature and a high pressure flows into the liquid state while being discharged from the liquid state by releasing the heat of liquefaction due to heat exchange. Since the refrigerant is in the process of changing from a gas phase to a liquid phase, The refrigerant and the liquid refrigerant are mixed.

However, when the gaseous refrigerant and the liquid-phase refrigerant are mixed, only the equilibrium condition can be obtained in temperature and pressure. Therefore, in order to further improve the efficiency of the condenser, it is preferable to separate the liquid refrigerant already condensed and the gaseous refrigerant that has not yet condensed Do.

In order to separate the gaseous refrigerant and the liquid refrigerant from each other as described above, a condenser usually includes a receiver dryer. Therefore, generally, the refrigerant passing through a region in the condenser flows into the receiver drier, and the flow path is formed in such a manner that the gas phase and the liquid phase are separated and then reintroduced into the condenser.

The region in the condenser where the refrigerant passes before entering the receiver dryer is referred to as the condensing region, and the region where the refrigerant is re-introduced from the receiver dryer and cooled is referred to as the supercooling region.

Figure 1 shows a front view of a typical condenser and receiver dryer.

Generally, the condenser 10 has a plurality of tubes 11 arranged in parallel in the air blowing direction; A pin (12) interposed between the tubes (11) and increasing a heat transfer area with air flowing between the tubes (11); A pair of header tanks 15 connected to both ends of the tube 11 and having an inlet 13 and an outlet 14 and through which the heat exchange medium flows; At least one baffle (16) provided in the header tank (15) to block flow of the heat exchange medium to form a flow path region; .

The condenser 10 is provided with the inlet 13 and the outlet 14 in one side header tank 15 and the gas-liquid separator 20 in the other header tank 15, have.

The condenser shown in FIG. 1 has a 6-pass flow path, and the gaseous refrigerant flows through the No. 1 pass. The liquid refrigerant condensed through No. 1 pass passes through the No. 4 and No. 5 passes through the gas- It is supercooled in the pass. The gas phase refrigerant passing through the first pass passes through the No. 2 pass and passes through the No. 3 pass and is condensed. The gaseous refrigerant and the liquid phase refrigerant coexist on the pass. The liquid phase refrigerant separated through the gas- And passes through the path to be supercooled and discharged.

As a related patent, a condenser having a 6-pass flow path of a pass different from that of FIG. 1 has been disclosed in Korean Patent Laid-Open No. 2008-0004857 (published on Jan. 10, 2008, entitled: a condenser equipped with a receiver dryer).

Meanwhile, the condenser performs a phase change to the liquid refrigerant through the heat exchange between the high-temperature and high-pressure gas refrigerant with the outside air. Generally, a tube having the same number of holes regardless of the refrigerant state inside the condenser .

However, in order to maximize the performance of the condenser, it is necessary to maximize the heat transfer performance by changing the tube odd number for each refrigerant state (gas, abnormal state, liquid).

That is, since the conventional condenser has the same number of tube odd numbers in all the regions, it is difficult to cope with the change of the refrigerant state, so that the additional pressure loss increases and heat transfer may be deteriorated.

As related patents, Korean Patent Publication No. 2008-0004857 (published on January 10, 2008, entitled: condenser equipped with receiver drier)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to minimize the pressure loss and maximize the heat transfer by forming the tube odd number different for each pass considering the state of the refrigerant circulating in the tube A condenser is provided.

In other words, it is an object of the present invention to provide an apparatus and a method for controlling a refrigerant in which a first tube and a second tube each having a different number of partitions, And the second tube having a larger tube number than the first tube is disposed in the region where the liquid refrigerant flows, the tube cross-sectional area is increased in the first tube having a lower density and a higher flow rate, thereby minimizing the pressure loss on the refrigerant side And to provide a condenser in which the heat transfer area is increased in a second tube having a high density and a relatively low flow rate to maximize heat transfer efficiency.

The condenser of the present invention includes a first header tank (110) and a second header tank (120) spaced apart from each other by a predetermined distance. An inlet 510 formed in the first header tank 110 or the second header tank 120 and through which refrigerant flows and a refrigerant outlet 520; A plurality of tubes (200) having both ends fixed to the first header tank (110) and the second header tank (120) to form a refrigerant channel; A plurality of pins (300) interposed between the tubes (200); And a gas-liquid separator (400) for separating the gas-phase refrigerant and the liquid-phase refrigerant; The condenser 1 includes a first tube 210 and a second tube 220 having different numbers of partitions in which the tubes 200 are formed in the longitudinal direction of the condenser 1, The first tube (210) is disposed in a region where a gas or an abnormal refrigerant flows, and the second tube (220) is disposed in a region where a liquid refrigerant flows.

The number of the first tube holes 211 formed in the first tube 210 by the partition walls is larger than the number of the second tube holes 221 formed in the second tube 220 by the partition wall Is smaller than the number.

The first tube hole 211 is larger in cross-sectional area than the second tube hole 221 and has a smaller heat transfer area.

The condenser 1 further includes a first path 610 through which the refrigerant introduced through the inlet 510 first passes through the tube 200; A second path 620 through which the refrigerant having passed through the first path 610 is conveyed upward from the second header tank 120 and passes through the tube 200; A third path 630 through which the refrigerant having passed through the second path 620 is conveyed upward from the first header tank 110 and passes through the tube 200; A fourth path 640 through which refrigerant having passed through the first path 610 is conveyed downward from the second header tank 120 and passes through the tube 200; A fifth path 650 through which the refrigerant having passed through the third path 630 is conveyed downward from the first header tank 110 and passes through the tube 200; The refrigerant having passed through the third path 630 is separated from the gas-liquid separator 400 and then the liquid refrigerant flows into the second header tank 120 again and flows along the tube 200 A sixth pass 660 disposed at the lowermost end of the second pass 660; And the tube 200 disposed in the first path 610, the second path 620 and the third path 630 is the first tube 210 and the fourth path 640 ), The fifth pass (650), and the sixth pass (660) are the second tubes (220).

The first tube 210 and the second tube 220 are painted in different colors to prevent misassembly of the first tube 210 and the second tube 220, And an assembly region of the header 131 in which the first tube 210 and the second tube 220 are assembled is colored with a color corresponding to a color.

The first and second tubes 210 and 220 have a first alignment mark 212 and a second alignment mark 222 formed thereon to prevent misassembly of the condenser 1, A first alignment mark 212 and a second alignment mark 222 are formed in an assembly region of the header 131 in which the first tube 210 and the second tube 220 are assembled .

The condenser of the present invention is formed to have different tube odd numbers for each path in consideration of the state of the refrigerant circulating in the tube, thereby minimizing the pressure loss and maximizing the heat transfer.

More specifically, the present invention is characterized in that the tube is composed of a first tube and a second tube, the number of which is different from each other in the longitudinal direction of the tube, And the second tube having a larger number of tube odd than the first tube is disposed in the region where the liquid refrigerant flows, the sectional area of the tube is increased in the first tube having a lower density and a higher flow rate, thereby minimizing the pressure loss on the refrigerant side And the heat transfer area is increased in the second tube having a high density and a relatively low flow rate, thereby maximizing heat transfer efficiency.

That is, according to the present invention, by matching a tube having a tube odd number that can exhibit the maximum performance for each refrigerant state, the single product performance of the condenser and the air conditioner performance of the vehicle can be improved.

In addition, according to the present invention, different colors of the first tube and the second tube, or by displaying different alignment marks on the surface, it is possible to prevent misassembly that may occur during the assembly process.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional heat exchanger medium flow of a condenser; FIG.
2 is a partially exploded perspective view of a condenser according to the present invention;
3 is a schematic diagram illustrating the heat exchange medium flow of a condenser according to the present invention.
4 is a cross-sectional view of a first tube and a second tube of a condenser according to the present invention.
5 is a perspective view showing another first tube and a second tube of the condenser according to the present invention.
FIG. 6 is a perspective view of a condenser equipped with the first tube and the second tube of FIG. 5;
7 is a perspective view showing another first tube and a second tube of the condenser according to the present invention.

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

2 and 3, the condenser 1 of the present invention mainly includes a first header tank 110, a second header tank 120, an inlet 510, (200), a fin (300), and a gas-liquid separator (400).

The first header tank 110 and the second header tank 120 are generally formed by a combination of the header 131 and the tank 132 and are spaced apart from each other by a predetermined distance.

The inlet 510 and the outlet 520 are formed in either the first header tank 110 or the second header tank 120 so that the refrigerant is introduced or discharged. In the embodiment of FIGS. 2 and 3, There is shown a six-pass condenser 1 in which the inlet 510 and the outlet 520 are all formed in the first header tank 110 and the inlet 510 is provided on the upper side of the outlet 520.

Of course, the positions of the inlet 510 and the outlet 520 may be variously changed depending on the flow path to be constructed.

Both ends of the tube 200 are fixed to the first header tank 110 and the second header tank 120 to form refrigerant flow paths. The fin 300 is bent upward and downward between the tubes 200 to increase the heat transfer area with the air flowing between the tubes 200.

The condenser 1 of the present invention includes a gas-liquid separator 400 disposed at one side of the second header tank 120 and separating the gaseous refrigerant from the liquid-phase refrigerant. The gas-liquid separator 400 separates refrigerant The gas-liquid separator separates the gas-phase refrigerant into the upper stream and the liquid-phase refrigerant into the lower stream, and finally the gas-liquid separator 400 collects only the liquid-phase refrigerant.

Particularly, the tube 200 includes a first tube 210 and a second tube 220 which are different in the number of partitions formed in the tube 200 in the longitudinal direction.

In the condenser 1 of the present invention, the first tube 210 is disposed in a region where a gas or an abnormal refrigerant flows, and the second tube 220 is disposed in a region where a liquid refrigerant flows And the number of the first tube holes 211 formed in the first tube 210 by the partition wall is smaller than the number of the second tube holes 221 formed in the second tube 220.

4, the first tube holes 211 are formed to be smaller in number than the second tube holes 221, so that the cross-sectional area is larger and the heat transfer area is smaller than that of the second tube holes 221 .

For reference, the cross-sectional area is an odd number of tubes 200 occupied by the holes of each tube 200, and the heat transfer area means the total heat transfer receiving length of the tube 200. [

Accordingly, since the condenser 1 of the present invention has a low density and a fast flow rate when the refrigerant is in a gaseous state, the refrigerant side pressure loss can be minimized by reducing the number of tubes 200 by increasing the sectional area of the tube 200, The heat transfer efficiency can be maximized by increasing the number of the tubes 200 by increasing the heat transfer area because the density of the refrigerant in the liquid state is high and the flow velocity is relatively low.

FIG. 8 is a table comparing and evaluating the performance of the single unit of the condenser 1 having the above-described characteristics and the performance when applied to an actual vehicle. As shown in FIG. 8, It can be confirmed that the performance is improved when the number of holes 211 is increased.

In the above experiment, the condenser 1 of the present invention increased the heat radiation performance by about 3%, not only showed no increase in the pressure loss due to the odd number increase of the tube 200 in the second tube 220 through which the liquid refrigerant flows, It has been confirmed that the indoor cooling performance in the initial (quick-acting) and idle state of 50 kph is improved even when applied to a vehicle.

The condenser 1 shown in FIG. 3 includes a first path 610 through which the refrigerant introduced through the inlet 510 first passes through the tube 200; A second path 620 through which the refrigerant having passed through the first path 610 is conveyed upward from the second header tank 120 and passes through the tube 200; A third path 630 through which the refrigerant having passed through the second path 620 is conveyed upward from the first header tank 110 and passes through the tube 200; A fourth path 640 through which refrigerant having passed through the first path 610 is conveyed downward from the second header tank 120 and passes through the tube 200; A fifth path 650 through which the refrigerant having passed through the third path 630 is conveyed downward from the first header tank 110 and passes through the tube 200; The refrigerant having passed through the third path 630 is separated from the gas-liquid separator 400 and then the liquid refrigerant flows into the second header tank 120 again and flows along the tube 200 A sixth pass 660 disposed at the lowermost end of the second pass 660; Way refrigerant flow path.

That is, after the refrigerant introduced through the inlet 510 formed at the middle of the first header tank 110 passes through the first path 610, the condensed refrigerant is separated into vapor and liquid, The separated gaseous refrigerant is transferred to the upper side and passes through the second path 620 and the third path 630.

The liquid refrigerant condensed while passing through the first path 610 is conveyed downward to pass through the fourth path 640 and the fifth path 650 and flows into the gas-liquid separator 400, Passes through the third pass 630 and the sixth pass 660 together with the liquid refrigerant separated by the gas-liquid separator 400.

The second path 620, the third path 630, the fourth path 640 and the fifth path 650 are connected to the first path 610 and the fifth path 650, And the liquid phase refrigerant is present in a mixed state. In the sixth pass 660, the liquid phase refrigerant is supercooled.

Particularly, the first to sixth passages 610 to 630 are flow paths through which the refrigerant in the gaseous state flows and is condensed. The first to sixth passages 610 to 630 pass through the first tube 610, The second passages 640 to 660 are preferably arranged such that the second tubes 220 are disposed in a flow path in which liquid refrigerant flows and is condensed .

The condenser 1 in which the first tube 210 and the second tube 220 having different odd numbers of tubes 200 are disposed in consideration of the state of the refrigerant circulating in the tube 200 as described above is assembled The first tube 210 and the second tube 220 may be misassembled.

Since the first tube 210 and the second tube 220 have the same appearance, they may be painted in different colors to be distinguished.

When the first tube 210 and the second tube 220 are inserted and fixed in the tube insertion hole 133 of the header 131, the tube 200 corresponding to a desired path, The header 131 may be colored in colors corresponding to the colors of the first tube 210 and the second tube 220 so as to be assembled in the column.

According to another embodiment of the present invention, the condenser 1 is provided with a first alignment mark 212 and a second alignment mark 212 on the first tube 210 and the second tube 220, respectively, 222 and the first and second tubes 210 and 220 are assembled in an assembling area of the header 131 in which the first tube 210 and the second tube 220 are assembled to correspond to the first and second alignment marks 212 and 222, (222) may be formed.

At this time, the first tube 210 and the second tube 220 may be divided into an aline mark so that the first tube 210 and the second tube 220 are divided, An alignment mark may be displayed only on an assembly area of the header 131 in which the second tube 220 is assembled.

In addition, the condenser 1 of the present invention may be modified in various ways to prevent misassembly of the first tube 210 and the second tube 220.

The condenser 1 of the present invention is characterized in that the first tube 210 is disposed in a region where a gas or an abnormal state refrigerant flows, The second tube 220 having a larger number of odd tubes 200 than the first tube 210 is disposed so that the sectional area of the tube 200 is increased in the first tube 210 having a lower density and a higher flow rate, And the heat transfer area is increased in the second tube 220 having a high density and a relatively low flow rate, thereby maximizing the heat transfer efficiency.

That is, the present invention can improve the performance of the single unit of the condenser 1 and the air conditioner performance of the vehicle by matching the tube 200 having the odd number of the tubes 200 that can exhibit the maximum performance for each refrigerant state.

It will be understood by those skilled 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. It goes without saying that various modifications can be made.

1: condenser
110: first header tank 120: second header tank
131: header 132: tank
133: tube insertion hole
200: tube
201:
210: first tube
211: first tube hole 212: first alignment mark
220: second tube
221: second tube hole 222: second alignment mark
300: pin
400: gas-liquid separator
510: inlet 520: outlet
610: First pass 620: Second pass
630: Third pass 640: Fourth pass
650: fifth pass 660: sixth pass

Claims (6)

A first header tank (110) and a second header tank (120) spaced apart from each other by a predetermined distance; An inlet 510 formed in the first header tank 110 or the second header tank 120 and through which refrigerant flows and a refrigerant outlet 520; A plurality of tubes (200) having both ends fixed to the first header tank (110) and the second header tank (120) to form a refrigerant channel; A plurality of pins (300) interposed between the tubes (200); And a gas-liquid separator (400) for separating the gas-phase refrigerant and the liquid-phase refrigerant; (1), wherein the condenser
The condenser (1)
A first tube 210 and a second tube 220 having different numbers of partitions formed in the longitudinal direction of the tube 200,
The first tube 210 is disposed in a region where a gas or an abnormal state refrigerant flows,
And the second tube (220) is disposed in a region where liquid refrigerant flows.
The method according to claim 1,
The condenser (1)
The number of the first tube holes 211 formed in the first tube 210 by the partition wall is smaller than the number of the second tube holes 221 formed in the second tube 220. [ .
3. The method of claim 2,
The first tube hole (211)
Sectional area larger than that of the second tube hole (221) and having a smaller heat transfer area.
The method of claim 3,
The condenser (1)
A first path 610 through which the refrigerant introduced through the inlet 510 first passes through the tube 200;
A second path 620 through which the refrigerant having passed through the first path 610 is conveyed upward from the second header tank 120 and passes through the tube 200;
A third path 630 through which the refrigerant having passed through the second path 620 is conveyed upward from the first header tank 110 and passes through the tube 200;
A fourth path 640 through which refrigerant having passed through the first path 610 is conveyed downward from the second header tank 120 and passes through the tube 200;
A fifth path 650 through which the refrigerant having passed through the third path 630 is conveyed downward from the first header tank 110 and passes through the tube 200;
The refrigerant having passed through the third path 630 is separated from the gas-liquid separator 400 and then the liquid refrigerant flows into the second header tank 120 again and flows along the tube 200 A sixth pass 660 disposed at the lowermost end of the second pass 660; Respectively,
The tube 200 disposed in the first pass 610, the second pass 620, and the third pass 630 is the first tube 210,
Wherein the tubes (200) disposed in the fourth pass (640), the fifth pass (650), and the sixth pass (660) are the second tubes (220).
The method according to claim 1,
The condenser (1)
The first tube 210 and the second tube 220 are painted in different colors to prevent misassembly,
The assembly area of the header 131 in which the first tube 210 and the second tube 220 are assembled is colored with colors corresponding to the colors of the first tube 210 and the second tube 220 Features a condenser.
6. The method of claim 5,
The condenser (1)
A first alignment mark 212 and a second alignment mark 222 are formed on the first tube 210 and the second tube 220, respectively,
A first alignment mark 212 and a second alignment mark 222 are formed in an assembly region of the header 131 in which the first tube 210 and the second tube 220 are assembled Features a condenser.

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