KR102342956B1 - High efficiency evaporative condenser - Google Patents

Abstract

The present invention relates to a high-efficiency evaporative condenser. According to the present invention, a condenser in which condensing pipes are installed in multiple stages so that a refrigerant discharged from a compressor of a refrigeration cycle is condensed is provided with a plurality of heat dissipation fin members installed to be spaced apart from each other at regular intervals in the uppermost condensing pipe among the multi-stage condensing pipes. Accordingly, the cooling efficiency of the condenser can be increased by installing a heat sink fin on the condenser, water from the heat sink fin installed at the top can continuously fall to the condensing pipe at the bottom, and the cooling efficiency of the condensing pipe can be maximized by the latent heat of evaporation of water.

Description

High efficiency evaporative condenser

The present invention relates to a high-efficiency evaporative condenser, and more particularly, to a high-efficiency evaporative condenser that uses the latent heat of water to increase the condensation efficiency of the condenser while making the size of the condenser compact.

In general, a refrigeration system is composed of an evaporator, a compressor, a condenser, an expansion valve, and the like. As the refrigerant flows through the cooling pipe of the evaporator, it takes heat from the air around the cooling pipe, for example, the air in a low-temperature region such as the inside of the refrigerator to obtain a liquid phase. It undergoes a phase change from to gaseous phase (on the other hand, the air in the refrigeration space becomes low temperature because heat is lost) and exits the evaporator.

Then, the gaseous refrigerant is compressed to a high temperature and high pressure by the compressor, passes through the condenser, releases heat to the high temperature region, changes to a high temperature and high pressure liquid phase again, and is then decompressed by the expansion valve and supplied to the evaporator.

At this time, the high-temperature and high-pressure refrigerant exiting the compressor exchanges heat with cooling water or cooling air flowing around the condenser's condensing pipe while passing through the condenser's condensing pipe, and it changes its phase from gaseous to liquid. Condensation by air is called air cooling.

The dry method introduces the refrigerant decompressed from the expansion valve into the evaporator and evaporates gradually while proceeding through the tube without separating liquid and vapor until the outlet of the evaporator. It is suitable for small refrigeration equipment because it has a characteristic that the amount of refrigerant used or refrigeration oil remaining in the evaporator is small while the heat transfer effect is not good.

In the liquid pump type, in a low-pressure receiver where low-temperature, low-pressure gaseous refrigerant and liquid refrigerant coexist, liquid refrigerant 4 to 5 times the refrigerant circulating amount required for refrigeration is pumped to the evaporator and supplied to the evaporator, the refrigerant passes through the evaporator While absorbing heat from the low-temperature region, a part of the refrigerant changes to a gas phase, and the rest exits the evaporator as a liquid phase and is introduced into the low-pressure receiver again.

After that, only low-temperature and low-pressure gaseous refrigerant in the low-pressure receiver is compressed into high-temperature and high-pressure gas by the compressor and then supplied to the condenser, and the gaseous refrigerant passes through the condensing pipe of the condenser and is After transferring heat to the cooling water sprayed around the condensing pipe and the external air sucked into the air circulation fan, it is condensed and phase-changed into a high-temperature, high-pressure liquid refrigerant.

After that, the liquid refrigerant flows into the high-pressure receiver, is stored, and passes through the expansion valve again to become liquid and gaseous refrigerants of low temperature and low pressure, and is introduced into the low-pressure receiver.

Since a sufficient amount of refrigerant is supplied to the evaporator or condenser, the liquid pump type has the advantage of high cooling efficiency and no retention of refrigeration oil, so it is used for a large-capacity refrigeration system.

When the refrigeration system becomes large-capacity, the refrigerant flow distance becomes very long, the pipe resistance in the evaporator or condenser increases, and the efficiency of the system greatly decreases. The am pump type is adopted, which is forcibly pumped and supplied to the evaporator.

In a conventional refrigeration system using a liquid pump type, since only a screw-type condensing tube is used for the condenser, the size or length of the condensing tube is inevitably increased, which inevitably leads to an enlargement of the condenser.

This not only requires a large installation space due to the large size of the refrigeration system, high production and installation costs, but also increases the amount of refrigerant used, cooling water and circulating air. It causes a problem that a lot of power is required to drive it.

In particular, recently, in relation to environmental problems, the use of freon-based refrigerants is prohibited, and as the use of ammonia refrigerants with high efficiency and natural refrigerants as an alternative refrigerant has been expanded, the toxicity problem of ammonia refrigerants is newly emerging.

As safety regulations for such toxicity problems are strengthened, there is an urgent need to develop a refrigeration system that can satisfy safety regulations and obtain high efficiency at the same time, that is, development of an evaporator and a condenser. In response to these demands, studies on evaporators are being actively carried out, whereas studies on condensers are non-existent.

In order to solve such a problem, an 'evaporative condenser' is disclosed, and a specific configuration thereof is shown in FIG. 1 .

The condenser 100 includes a condenser coil 110 , a spray pipe 120 , a circulation pump 121 , a cooling water scattering prevention plate 122 , an air circulation fan 123 , an air intake port 124 , a cooling water storage box 125 and It consists of a housing 126 surrounding it.

Among them, the condenser coil 110 includes an inlet pipe 111 through which vapor phase refrigerant flows, an inlet header 112 connected to the inlet pipe, and a plurality of condensing pipes 113 having one end connected to the inlet header 112 . ), an outlet header 114 connected to the other ends of the plurality of condensing tubes 113, respectively, and an outlet tube 115 connected to the outlet header 114, and on the outer peripheral surface of the condensing tube 113, It is composed of a plurality of fins 116 formed and a head plate 117 responsible for fixing the position of the condenser coil.

As shown in Figure 1 (a), the fins 116 laid on the outer circumferential surface of the condensing tube are flat, and thus have the following problems. First, when using the condenser, scale is attached to the fins of the condenser and the condensation efficiency is reduced.

However, in the prior art, the fins are installed over the entire longitudinal direction of the condenser coil, so only the upper or lower parts of the fins are washed during washing, and the washing power of water does not reach the middle part of the fins, so the scale in the middle part cannot be removed and the middle part is washed I had a hard time doing it.

In addition, since the condensing pipe 113 is horizontally connected, as shown in FIG. 2 , the refrigerant (eg, ammonia) or refrigerant oil (R) flowing into the condensing pipe stays in the condensing pipe, thereby reducing the condensation efficiency. there was.

And, since the condensing pipe 113 has a circular cross-section as shown in FIG. ), there was a problem that the condensation efficiency was lowered.

Existing evaporative condensers spray water on the outside of the heat exchanger (radiator) and install a fan on the top to apply high-temperature and high-pressure refrigerant gas in the tube of the heat exchanger and use the latent heat of evaporation of water by the fan on the top to use the high-temperature and high-pressure of the refrigerant to a certain pressure and temperature.

In such an evaporative condenser, the amount of water is excessive when water is sprayed outside the pipe, and the latent heat of evaporation of water is used in some sections where water is wetted, so it takes up a lot of installation space, and the power cost due to the use of excessive amount of water for cooling There is a problem with the rise.

For example, Patent Document 1 below discloses an 'evaporative condenser coil having a corrugated fin'.

An evaporative condenser coil having a corrugated fin according to the following Patent Document 1 includes an inlet pipe through which a high-temperature and high-pressure refrigerant in a gaseous phase is introduced, an inlet header connected to the inlet pipe to distribute the refrigerant in the gaseous phase, and one end of the inlet header A condenser coil comprising a plurality of condensing pipes connected, an outlet header connected to the other ends of the plurality of condensing pipes, respectively, and an outlet pipe connected to the outlet header, wherein the condensing pipe has a streamlined cross section and is inclined downward; The first straight pipe in a row and the second straight pipe bent at one end of the first straight pipe and inclined downward in the opposite direction to the first straight pipe are sequentially connected and arranged, and there is a corrugation between the arrangement of each straight pipe Shaped pins are installed.

Patent Document 2 below discloses an 'outside air cooling evaporative condenser'.

The outdoor air cooling evaporative condenser according to the following Patent Document 2 includes a cooling tower case having a flow path connecting an intake port through which air is sucked and a discharge port through which air is discharged, a blower installed so that air is sucked through the suction port and discharged to the discharge port, A condensing coil installed on the flow path, receiving refrigerant from the compressor, condensing it, and sending it to the evaporator; A first spray for spraying cooling water, a water storage tank formed below the cooling tower case to store the cooling water sprayed from the first spray, a cooling water circulation device for supplying the cooling water stored in the water storage tank to the first spray, cold water from a load side device One end is connected to the cold water recovery line for recovering to the evaporator, the other end is a bypass recovery line connected to the coil inlet, a recovery line selection valve selectively connecting the cold water recovery line between the coil inlet and the evaporator, one end is A bypass supply line connected to the coil outlet, the other end of which is connected to a cold water supply line for supplying cold water from the evaporator to the load-side device, and a supply line selectively connecting the cold water supply line between the coil outlet and the evaporator made of valves

Republic of Korea Patent Registration No. 10-0636720 Republic of Korea Patent Registration No. 10-1305234 Korean Patent Publication No. 10-2019-0006781

An object of the present invention is to solve the above problems, and to provide a high-efficiency evaporative condenser that allows the condenser to be manufactured in a small and compact structure.

Another object of the present invention is to provide a high-efficiency evaporative condenser that can increase the cooling efficiency of the condenser.

Another object of the present invention is to provide a high-efficiency evaporative condenser that can be installed in an installation space without restrictions by manufacturing the condenser in a small size.

In order to achieve the above object, the high-efficiency evaporative condenser according to the present invention is a condenser in which the condensing pipe 20 is installed in multiple stages so that the refrigerant from the compressor of the refrigeration cycle is condensed, the multi-stage condensing pipe ( 20) of a plurality of heat dissipation fin members (10) installed to be spaced apart at regular intervals in the uppermost condensing pipe; characterized in that it includes.

The heat dissipation fin member 10 may include a first heat dissipation fin 11 installed on the top of the condensing pipe installed in the first row of the uppermost one of the condensing pipes; a second heat dissipation fin (12) installed between the first row and the second row of the condensing pipes; a third heat dissipation fin (13) installed between the second row and the third row of the condensing pipes; a fourth heat dissipation fin (14) installed between the third row and the fourth row of the condensing pipes; a fifth heat dissipation fin (15) installed between the fourth row and the fifth row of the condensing pipes; and a sixth heat dissipation fin (16) installed under the fifth heat condensing pipe.

The heat dissipation fin member 10 includes an upper surface groove portion 17 formed at regular intervals on the upper surface to be seated on a multi-stage condensing tube; Including;;

The upper surface groove portion 17 and the lower surface groove portion 18 are characterized in that they are formed to alternate with each other.

The sixth heat dissipation fin 16 has an upper surface groove portion 17 to seat the condensing tube, and on the lower surface of the sixth heat dissipation fin 16, the first heat dissipation fin 11 to the sixth heat dissipation fin 16 are outside. It is characterized in that the water dripping protrusion 19;

The dripping protrusions 19 are formed at regular intervals to correspond to the condensing pipe at the lower end, so that the water of the first heat dissipation fin 11 to the sixth heat dissipation fin 16 falls into the condensing pipe at the lower end due to the latent heat of evaporation of water. It is characterized in that heat dissipation is made.

As described above, according to the high-efficiency evaporative condenser according to the present invention, it is possible to increase the cooling efficiency of the condenser by installing a heat dissipation fin in the condenser, and the water of the heat dissipation fin installed at the top corresponds to the condensing pipe at the bottom, respectively, so that it falls continuously It is possible to directly dissipate heat from the condensing pipe by the latent heat of evaporation of water, and the effect of maximizing the cooling efficiency of the condensing pipe by the latent heat of evaporation of water is obtained.

According to the high-efficiency evaporative condenser according to the present invention, the cooling efficiency of the condenser is improved, so that the driving of the pump can be reduced, and the effect of increasing the cooling efficiency of the condenser to make the condenser compact is obtained.

1 is a block diagram showing a conventional evaporative condenser;
2 is a front view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention;
3 is an exploded stereoscopic view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention;
4 is an exploded cross-sectional view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention;
5 is a three-dimensional view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention;
6 is a bottom stereoscopic view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention;
7 is a cross-sectional view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention.

However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text.

For example, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea because the embodiments are capable of various changes and may have various forms.

In addition, the scope of the present invention should not be construed as being limited thereby because the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects.

In the present specification, the present embodiment is provided so that the disclosure of the present invention is complete, and to fully inform those of ordinary skill in the art to which the present invention belongs, the scope of the invention. And the invention is only defined by the scope of the claims.

Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques have not been specifically described in order to avoid obscuring the present invention.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined.

Terms defined in general used in the dictionary should be interpreted as having the same meaning in the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, a high-efficiency evaporative condenser according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The high-efficiency evaporative condenser according to a preferred embodiment of the present invention is a condenser in which condensing pipes 20 are installed in multiple stages so that the refrigerant from the compressor of the refrigeration cycle is condensed. It includes a plurality of heat dissipation fin members 10 that are installed to be spaced apart from each other at regular intervals on the tube.

2 is a front view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention, FIG. 3 is an exploded stereoscopic view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention, and FIG. It is an exploded cross-sectional view showing a high-efficiency evaporative condenser according to a preferred embodiment.

As shown in FIG. 2, the evaporative condenser 20 according to the embodiment of the present invention is formed by a plurality of condensing pipes 21 to 26 in multiple stages, and the condensing pipes 21 to 26 are located at the uppermost end. A first-stage condensing pipe 201, a second-stage condensing pipe 202 installed under the first-stage condensing pipe 201, a third-stage condensing pipe installed under the second-stage condensing pipe 202 203 , a fourth-stage condensing tube 204 installed under the third-stage condensing tube 203 , and a fifth-stage condensing tube 205 installed under the fourth-stage condensing tube 204 .

Of course, this condenser 20 may be formed in three or four stages as needed.

A heat dissipation fin member 10 is installed in the first-stage condensing pipe 201 so as to smoothly dissipate heat from each of the condensing pipes 21 to 26 .

The heat dissipation fin member 10 is formed of a plurality of heat dissipation fins 11 to 16 at regular intervals in the first-stage condensing pipe 201 , and these heat dissipating fin members 10 are installed in the first-stage condensing pipe 201 .

These heat dissipation fin members 10 are installed in the first-stage condensing pipe 201 and the second-stage condensing pipe 202 , and may be installed in the first-stage condensing pipe 201 if necessary.

3 and 4, the heat dissipation fin member 10 includes a first heat dissipation fin 11 installed on the upper surface of the first condensing pipe 21, a first condensing pipe 21 and a second condensing pipe ( 22) The second heat dissipation fin 12 installed between, the third heat dissipation fin 13 installed between the second condensing pipe 22 and the third condensing pipe 23, the third condensing pipe 23 and the fourth condensation The fourth heat dissipation fin 14 installed between the pipes 24 , the fifth heat dissipation fin 15 installed between the fourth condensing pipe 24 and the fifth condensing pipe 25 , and the fifth condensing pipe 25 . It consists of a sixth heat dissipation fin 16 installed at the lower portion.

The first heat dissipation fin 11 is installed on the upper surface of the first condensing pipe 21 , and the second heat dissipating fin 12 is installed between the first condensing pipe 21 and the second condensing pipe 22 , and the third The heat dissipation fin 13 , the fourth heat dissipation fin 14 , and the fifth heat dissipation fin 15 are respectively installed between the second condensing pipe 22 to the fifth condensing pipe 25 .

A sixth heat dissipation fin 16 is installed at a lower portion of the fifth condensing pipe 15 .

Grooves 18 are formed at regular intervals so that the first condensing pipe 21 is seated in these first heat dissipation fins 11, and on the upper surfaces of the second to fifth heat dissipating fins 12 to 15, respectively, the condensing pipes 21 to 25) is coupled to the upper surface groove portion 17 is formed, and the lower surface of the second to fifth heat dissipation fins 12 to 15 are formed with groove portions 18 to which the condensing pipes 22 to 25 are coupled, respectively.

The upper and lower grooves 17 and 18 are spaced apart to correspond to the condensing pipes 21 to 25 spaced apart by a predetermined distance, respectively.

On the other hand, on the upper surface of the sixth heat dissipation fin 16 , upper surface grooves 17 are formed to be spaced apart at regular intervals so that the fifth condensing pipe 25 is coupled, and water is condensed on the lower surface of the sixth heat dissipation fin 16 at the bottom. A dripping protrusion 19 is formed so as to fall into the tubes 202-205.

As shown in FIG. 4 , the dripping protrusions 19 are respectively formed to correspond to the sixth condensation pipes 26 arranged at regular intervals so that water falls to the lower part of the second-stage condensation pipe 202 .

That is, the dripping protrusion 19 is formed to correspond to the upper condensing pipe 26a and the lower condensing pipe 26b disposed at the lower part of the sixth condensing pipe 26 located at the lower part.

This is so that the water of the heat dissipation fin 10 installed in the first-stage condensing tube 201 is in contact with the second condensing tube 26 at the lower end, respectively.

Accordingly, in the above-described heat dissipation fins 10, water can flow down along the vertically installed heat dissipation fins 11 to 16 .

In this way, water flows down to the second-stage condensing tube 202 to the fifth-stage condensing tube 205 at the lower end along each heat dissipation fin 11 to 16 and comes into contact with each of the condensing tubes 26 .

Next, the coupling relationship of the high-efficiency evaporative condenser according to a preferred embodiment of the present invention will be described.

5 is a three-dimensional view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention, FIG. 6 is a bottom stereoscopic view showing a high-efficiency evaporative condenser according to a preferred embodiment of the present invention, and FIG. 7 is the present invention It is a cross-sectional view showing a high-efficiency evaporative condenser according to a preferred embodiment of the.

2 to 7, the evaporative condenser according to an embodiment of the present invention installs a plurality of heat dissipation fin members 10 spaced apart from each other at regular intervals in a first-stage condensing pipe 201 having multiple stages.

The heat dissipation fin member 10 includes a first heat dissipation fin 11 having a lower surface groove 18 and a second heat dissipation fin 12 to a fifth heat dissipation fin 15 in which the upper and lower grooves 17 and 18 are formed, and an upper groove portion 17 . and a sixth heat dissipation fin 16 having a dripping protrusion 19 formed therein.

A first heat dissipation fin 11 is installed at an upper portion of the first condensing pipe 21 , a second heat dissipation fin 12 is installed at a lower portion of the first condensing pipe 21 , and an upper portion of the second condensing pipe 22 . A second heat dissipation fin 12 and a third heat dissipation fin 13 are installed at the lower and lower portions, respectively.

As such, the third heat dissipation fin 13 , the fourth heat dissipation fin 14 and the fifth heat dissipation fin 15 are sequentially installed in the third condensing pipe 23 and the fourth condensing pipe 24 , respectively.

In addition, a sixth heat dissipation fin 16 is installed at a lower portion of the fifth condensing pipe 25 , and the first heat dissipation fins 11 to 6 heat dissipation fins 16 are installed to coincide with each other on a vertical line.

In this way, the heat dissipation fins 11 to 16 are installed to be spaced apart from each other at a predetermined interval in the condensing tube 21 to 25 .

Meanwhile, water that has fallen from the water spray pipe (not shown) flows down along the surface of the heat dissipation fins 11 to 16, and the water flows through the second stage condensing pipe 202 at the dripping protrusion 19 of the sixth heat dissipation fin 16. falling towards

Since the dripping protrusions 19 are respectively formed to correspond to the sixth condensing pipes 26 of the second-stage condensing pipe 202 , the water collected by the falling water protrusions 19 is disposed at the upper portion of the sixth condensing pipe 26 . Water falls into the condensing pipe 26a and the lower condensing pipe 26b.

That is, the first-stage condensing pipe 201 is heat-exchanged by a plurality of heat dissipating fins 11 to 16, and water dripping along the heat dissipating fins 11 to 16 is the lower portion of the first condensing pipe 201. The second-stage condensing pipe 202 to the fifth-stage condensing pipe 205 installed in the are sequentially dripped.

As the dripped water comes into contact with the second-stage condensing tube 202 to the fifth-stage condensing tube 205 , the condensation tube 20 is cooled by the latent heat of evaporation of water.

In this way, when water is in contact with the condensing pipe 20, the condensing pipe 20 is cooled more rapidly by the latent heat of evaporation of water.

Although the invention made by the present inventors has been described in detail according to the above embodiments, the present invention is not limited to the above embodiments and various modifications can be made without departing from the gist of the present invention.

10: heat dissipation fin member 11: first heat dissipation fin
12: second heat dissipation fin 13: third heat dissipation fin
14: fourth heat dissipation fin 15: fifth heat dissipation fin
16: sixth heat dissipation fin 17: upper surface groove portion
18: lower groove part 19: falling water protrusion
20: condensing tube 21: first condensing tube
22: second condensing tube 23: third condensing tube
24: fourth condensing tube 25: fifth condensing tube

Claims (5)

In the condenser in which the condensing tube 20 is installed in multiple stages so that the refrigerant discharged from the compressor of the refrigeration cycle is condensed,
A plurality of heat dissipation fin members (10) installed to be spaced apart from each other at regular intervals in the uppermost condensing pipe of the multi-stage condensation pipe (20); includes;
The heat dissipation fin member 10 includes a first heat dissipation fin 11 installed on the uppermost first condensing pipe among the condensing pipes, and a second heat dissipation fin installed between the first and second condensing pipes among the condensing pipes. (12), a third heat dissipation fin 13 installed between the second condensing pipe and the third condensing pipe among the condensing pipes, and a fourth heat dissipation fin installed between the third condensing pipe and the fourth condensing pipe among the condensing pipes (14), a fifth heat dissipation fin 15 installed between the fourth and fifth condensing pipes among the condensing pipes, and a sixth heat dissipation fin 16 installed under the fifth condensing pipe,
The sixth heat dissipation fin 16 has an upper surface groove portion 17 to seat the condensing pipe, and the water of the first heat dissipation fin 11 to the sixth heat dissipation fin 16 is formed on the lower surface of the sixth heat dissipation fin 16 . A high-efficiency evaporative condenser, characterized in that; a plurality of dripping protrusions (19) are spaced apart so as to correspond to the lower condensing pipe (26), respectively.
delete The method of claim 1,
The heat dissipation fin member 10 includes an upper surface groove portion 17 formed at regular intervals on the upper surface to be seated on a multi-stage condensing tube;
Including;;
The high-efficiency evaporative condenser, characterized in that the upper surface groove portion (17) and the lower surface groove portion (18) are formed to be alternated with each other.
delete delete

Images