KR20110017311A - Apparatus for cooling condenser of airconditioner - Google Patents

Abstract

PURPOSE: A device for cooling a condenser of an air conditioner is provided to rapidly reduce condensing temperature and to improve cooling efficiency by reducing condensing pressure. CONSTITUTION: A device for cooling a condenser of an air conditioner comprises a cooling fan(22), a spray nozzle(23), a cooling water control unit(25), and a cooling water supply source(29). The spray nozzle is installed in one side of the cooling fan and sprays cooling water to a condenser. The cooling water control unit controls the cooling water depending on the condensing temperature of a refrigerant, discharged from the condenser, and supplies the cooling water to the spray nozzle. The cooling water supply source supplies the cooling water to the cooling water control unit.

Description

Condenser chiller for air conditioners {APPARATUS FOR COOLING CONDENSER OF AIRCONDITIONER}

The present invention relates to a condenser cooling device for an air conditioner, and more particularly, to reduce the amount of electricity used by lowering the condensation temperature and condensation pressure of the condenser according to the spraying of the cooling water, and to adjust the spray amount of the cooling water according to the refrigerant temperature after condensation. The present invention relates to a condenser chiller for an air conditioner, thereby cooling the device structure.

In general, an air conditioning system refers to a system that generates cold and warm air by repeating a process of compressing, condensing, expanding, and evaporating a refrigerant, and using the same, to maintain indoor air at a comfortable state at all times.

Among these air conditioning systems, the air conditioner plays a key role in generating cold air, and is mainly composed of a compressor, a condenser, an evaporator, and an expansion valve.

First, the compressor compresses the refrigerant into a gaseous state of high temperature and high pressure, and sends the compressed refrigerant to a condenser, a swash plate type, a vane rotary type, and a wobble plate. Type (Wobble plate type).

The condenser serves to condense the high temperature and high pressure refrigerant sent from the compressor to the liquid by external air and to send it to the expansion valve. The evaporator is a free gas through the expansion valve. Receives a rapidly expanded refrigerant to evaporate to a low temperature low pressure gas to take the heat of the evaporation when the evaporation to obtain a cold wind.

Looking at the operating principle of the air conditioner of the configuration as described above, the refrigerant gas of the high temperature and high pressure compressed in the compressor is introduced into the condenser and heat exchange, thereby changing to a liquid low temperature high pressure refrigerant. The low-temperature and high-pressure refrigerant from the condenser passes through the expansion valve (capillary tube) to become a low-temperature, low-pressure liquid refrigerant and enters the evaporator, and the low-temperature refrigerant is exchanged with indoor air to become a gas state, whereby the refrigerant is introduced again into the compressor. .

Here, a blower fan is installed around the evaporator, so that air at room temperature passes between the cooling fins of the evaporator through the blower fan. The cooling fins take heat from the air while the refrigerant turns into a gas and evaporate to cool the surroundings. As the blower fan moves around the cold fins, the cold wind comes out.

On the other hand, the compressor of the refrigerating and air conditioning machine is the main electric consumption mechanism, the electricity consumption of the compressor is basically proportional to the condensation pressure. In addition, the condensation pressure is increased in proportion to the condensation temperature, and when the condensation temperature is lowered, the condensation pressure is naturally reduced, resulting in improved cooling efficiency of the refrigerator and saving of electric charges.

In order to increase the cooling efficiency of the air conditioner and reduce the electric charges according to the same principle, lowering the temperature of the condensed refrigerant should be preceded. Actually, the refrigerant gas compressed to high temperature and high pressure generates considerable heat of condensation during the condensation into the liquid phase in the condenser. Since the condenser and the air temperature around the condenser increases, the condensation efficiency is lowered. As such, when the condensation efficiency is lowered, the thermal efficiency of the cooling cycle is lowered, thereby lowering the cooling performance of the air conditioner.

Thus, conventionally, as one of the methods of cooling the condenser, by installing a cooling fan on one side of the condenser by forcibly generating wind toward the condenser by increasing the heat exchange rate of the refrigerant passing through the condenser to cool the condenser Is being used.

However, since the conventional air-cooled cooling method is a method of cooling by air having a relatively low specific heat, the cooling performance is low and sufficient condensation efficiency cannot be obtained, thereby reducing the cooling performance of the air conditioner.

In order to solve such a problem, a method of increasing the blowing capacity of the cooling fan may be devised. In this case, the overall size of the air conditioner is increased and the noise is increased by the operation of the large-capacity cooling fan. There was also an increasing problem.

On the other hand, as another method of cooling the condenser, a water-cooled cooling method is applied in which cooling water is supplied separately from the outside to cool the heat generated from the condenser, and the cooling water used for cooling the condenser is discharged to the outside of the air conditioner and circulated again.

However, the above-mentioned water-cooled cooling method is mainly used in large machines having a higher cooling efficiency than air-cooled, but has a large amount of heat of condensation. There was.

In addition, as a method of cooling the condenser, a mixed (eva) -type cooling method in which the above air-cooling and water-cooling are combined is also applied. In other words, the condenser dissipates heat by cooling with a cooling fan and simultaneously sprays cooling water to cool the condenser.

However, the above-described mixed cooling method has a risk of corrosion of the internal mechanism of the air conditioner by the cooling water, and also has a problem that the structure is complicated and the price is high because the cooling water must have a circulation structure such as water cooling.

In addition, the cooling water sprayed on the condenser is rapidly cooled and the temperature rises by the condenser in the process of being recollected, so that microorganisms multiply rapidly and foreign matters are mixed and reacted to form sludge. Therefore, the circulation line and the piping system through which the coolant is circulated are blocked by sludge, so that the circulation and supply of the coolant are not smoothly performed, and thus there is a problem in that maintenance and maintenance are not easy.

The present invention has been made to solve the conventional problems as described above, by reducing the condensation temperature and condensing pressure of the condenser in accordance with the spraying of the cooling water to improve the cooling performance of the condenser and to significantly reduce the amount of electricity used To provide a condenser chiller.

Another object of the present invention is to provide a condenser cooling device for an air conditioner by controlling the spray amount of the cooling water according to the condensation temperature of the refrigerant liquefied in the condenser so that a separate cooling water circulation and drainage facility are unnecessary.

Another object of the present invention is to provide a condenser cooling device for an air conditioner which minimizes the amount of electricity required for cooling the condenser and simplifies the device structure.

The configuration of the present invention for achieving the above object, the refrigerant gas compressed in the compressor of the air conditioner flows into the condenser to cool the liquid refrigerant in the cooling state by the cooling fan, the refrigerant flows into the evaporator through the expansion valve In the evaporator is a device that takes the heat in the air while the refrigerant changes to gas to evaporate to cool the surroundings, and at the same time the outside air passes through the cooling fins of the evaporator through the blowing fan mounted around the evaporator to discharge the cold wind Install a spray nozzle on one side of the cooling fan to evaporate the cooling water by spraying the condenser, and connect the cooling water control unit so that the cooling water is supplied to the spray nozzle by adjusting the cooling water according to the condensation temperature of the refrigerant discharged from the condenser. It is specially designed to connect the cooling water supply source that supplies cooling water to the cooling water control unit. It shall be.

Here, the cooling water control unit, the temperature sensor is installed adjacent to the pipe from which the refrigerant of the condenser is discharged, the high temperature expansion valve in the supply pipe to control the presence or absence of cooling water in accordance with the temperature of the refrigerant detected by the temperature sensor In the supply pipe located between the injection nozzle and the high temperature expansion valve, a capacity control valve is installed to adjust the capacity of the cooling water by the capacity adjustment screw.

In addition, the cooling water control unit, the temperature sensor is installed adjacent to the pipe from which the refrigerant of the condenser is discharged, the high-temperature expansion valve in the supply pipe to control the presence or absence of cooling water in accordance with the temperature of the refrigerant detected by the temperature sensor To install, the high-temperature expansion valve is connected to the capacity adjusting screw so as to adjust the capacity of the cooling water.

Then, a pump is installed in the supply pipe between the cooling water control unit and the cooling water supply source.

The present invention through the above problem solving means, by spraying the cooling water into the droplets of the mist form, the cooling water particles can quickly absorb the heat of the condenser to quickly and surely lower the condensation temperature. Therefore, as the condensation temperature is lowered, the condensation pressure is lowered to improve the cooling efficiency and cooling performance, and the load applied to the freezer is reduced, thereby greatly reducing the electric charge due to the air conditioner operation.

Furthermore, by adjusting the cooling water injection amount according to the refrigerant temperature after condensation and the capacity of the condenser, there is an effect that the condenser can be cooled using an appropriate amount of cooling water without a separate cooling water drainage and circulation facility.

In addition, the condenser is cooled by using a small amount of coolant, which makes it unnecessary to enlarge the condenser, which simplifies the cooling device and structure, and also allows the cooling water injected into the condenser to evaporate, thus providing separate cooling water circulation facilities and drainage. There is no need for facilities, and the use of electricity is reduced to a minimum to evaporate the cooling water, further reducing the electricity bill.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

1 to 4 show a condensate water evaporator for an air conditioner according to the present invention, which includes a spray nozzle 23, a coolant control unit 25, and a coolant supply source 29.

Thus, prior to looking at the characteristic configuration of the present invention, the configuration and operation principle of the compressor 10, the condenser 20, the expansion valve 30, the evaporator 40, which are the main components of the air conditioner through FIG. Looking at it, the high-pressure high-pressure refrigerant gas compressed by the compressor 10 is introduced into the condenser 20, the cooling fan 22 is installed around the condenser 20, the high-temperature high-pressure refrigerant gas is a liquid low temperature Heat exchange with high pressure refrigerant.

The low temperature and high pressure refrigerant discharged from the condenser 20 becomes a low temperature low pressure liquid refrigerant while passing through the expansion valve 30, and the low temperature low pressure refrigerant flows into the evaporator 40 while the cooling fins of the evaporator 40 are cooled. In the process, the refrigerant takes heat from the air and evaporates to cool the environment as it turns into gas. At the same time, the outside air is passed through the cooling fins through the blowing fan 410 mounted around the evaporator 40 to discharge cold wind. In addition, the refrigerant in the evaporator 40 is exchanged with the indoor air to be in a gas state, so that the refrigerant is introduced into the compressor 10 again, and this process is repeatedly performed, thereby driving the air conditioner.

On the other hand, the condenser cooling device for an air conditioner of the present invention sprays the cooling water supplied from the outside to the cooling fan 22 in the form of small droplets or mist, and sprayed onto the condenser 20 by the cooling fan 22 to condenser ( 20) to cool the heat dissipated.

2 to 4, the spray nozzle 23 is installed on one side of the cooling fan 22 to spray the cooling water supplied from the cooling water supply source 29 to the condenser 20, and the condenser 20 Cooling water control unit 25 is installed in the supply pipe 24 to control the cooling water according to the refrigerant temperature after the condensation discharged from the).

Referring to FIG. 2 for the first embodiment of the cooling water control unit 25, the temperature sensor 26a is adjacent to or connected to a pipe 21 through which the refrigerant after condensation is discharged from the condenser 20. The high temperature expansion valve 26 is installed in the supply pipe 24 to supply the cooling water or block the supply according to the temperature of the refrigerant sensed by the temperature sensor 26a.

And, between the high temperature expansion valve 26 and the injection nozzle 23 to install a capacity control valve 27 in the supply pipe 24 to adjust the amount of cooling water supplied to the injection nozzle 23, which It is possible to configure through the control of the capacity adjustment screw 28 mounted on the capacity control valve 27.

Subsequently, a second embodiment of the cooling water control unit 25 will be described with reference to FIG. 3. The temperature sensor 26a may be adjacent to or in contact with a pipe 21 through which the refrigerant of condensed water is discharged from the condenser 20. ), And a high-temperature expansion valve 26 for supplying cooling water or cutting off the supply according to the temperature of the refrigerant detected by the temperature sensor 26a is installed in the supply pipe 24.

In addition, the high temperature expansion valve 26 may be equipped with a capacity adjusting screw 28 capable of rotating control to adjust the amount of cooling water supplied to the injection nozzle 23.

That is, the high temperature expansion valve 26 installed in the cooling water control unit 25 is opened when the temperature detected by the temperature sensor 26a is 30 ° C. or more, for example, and the cooling water is introduced into the spray nozzle 23. When the temperature sensed by the temperature sensor 26a is below 30 ° C., for example, the temperature is closed and the flow of the coolant flowing in the injection nozzle 23 is blocked.

In addition, it is possible to adjust the amount of cooling water flowing into the injection nozzle 23 through the adjustment of the capacity adjusting screw 28.

Subsequently, the high temperature expansion valve 26 installed in the coolant control unit 25 is connected to a coolant supply source 29 through a supply pipe 24 to supply coolant to the coolant control unit 25. At this time, when the cooling water supply source 29 as shown in Figure 4 is not able to form a constant water pressure, such as a pump (P) in the supply pipe 24 located between the high-temperature expansion valve 26 and the cooling water supply source (29) A pressurization device can be further installed.

Referring to the operation and effect of the present invention configured as described in detail as follows.

Looking at the action of cooling the condenser 20 through the condensate cooling device for air conditioner according to the present invention, the refrigerant compressed to high temperature and high pressure in the compressor 10 is condensed in the condenser 20, the condensed refrigerant is piped again ( 21 is introduced into the expansion valve 30, which is introduced into the evaporator 40 again to generate a cold wind.

At this time, since the temperature sensor 26a is installed adjacent to the pipe 21 between the condenser 20 and the evaporator 40, the refrigerant temperature after condensation discharged through the pipe 21 can be measured in real time. Will be.

When the temperature measured by the temperature sensor 26a is measured at a predetermined temperature, for example, 30 ° C. or more, the high temperature expansion valve 26 connected to the temperature sensor 26a is opened, and then through the supply pipe 24. Cooling water is supplied from the cooling water supply source 29 and supplied to the injection nozzle 23.

Then, the spray nozzle 23 transforms the cooling water into a very small volume of droplets or mist droplets and sprays it toward the cooling fan 22, and the sprayed cooling water is sprayed by the cooling fan 22 and the wind. While touching the condenser 20 together, the evaporator can be instantaneously evaporated and the condenser 20 can be cooled more quickly.

At this time, in order to adjust the amount of cooling water sprayed to the condenser 20, it is possible to adjust the spray amount of the cooling water through a simple operation of the capacity adjusting screw 28.

As such, when the condenser 20 is cooled, the temperature of the refrigerant discharged from the condenser 20 gradually decreases, and the temperature measured by the temperature sensor 26a falls below 30 ° C.

Then, the high temperature expansion valve 26 connected to the temperature sensor 26a is interrupted to stop the supply of the cooling water supplied to the injection nozzle 23, and the cooling action of the condenser 20 causes the cooling fan 22 to be stopped. Only through.

As described above, the condenser cooling device for air conditioners of the present invention can adjust the amount of cooling water discharged according to the refrigerant temperature after condensation discharged from the condenser 20, the capacity and size of the condenser 20, and the like, and thus an appropriate amount of cooling water can be used. As a result, it is possible to prevent water pooling of the floor due to excessively supplied cooling water, and thus, separate cooling water drainage facility is unnecessary.

In particular, the condenser cooling device for an air conditioner of the present invention by spraying the cooling water into the droplets of the mist form, the surface area of the cooling water relative to the weight is relatively increased so that the cooling water particles quickly absorb the heat of the condenser 20 due to this The condensation temperature can be lowered quickly and surely. That is, while the specific heat of water is 1 kW / g, while the heat of vaporization is 539 kW / g, the condensation temperature can be easily lowered by only spraying a small amount of water.

Therefore, as the condensation temperature is lowered, the condensation pressure is lowered to improve cooling efficiency and cooling performance, and the life of the refrigerator can be extended, and the load on the refrigerator is reduced by 10% or more as shown in Table 1 below. It is possible to greatly reduce the electric charges associated with the operation.

Room temperature Relative humidity Existing air conditioner
Power Consumption Invention air conditioner
Power Consumption Power saving ratio 19 ℃ 90% 4.7 A 4.5A 4.3% 23 ℃ 90% 4.9A 4.6A 6.1% 25 ℃ 92% 5.2A 4.8A 8.7% 26 ℃ 93% 5.4A 4.9A 9.3%

Furthermore, since the condenser cooling device for air conditioners of the present invention uses a small amount of cooling water to cool the condenser 20, it is not necessary to increase the size of the condenser 20 to cool the condenser 20, thereby simplifying the cooling device and structure, and also condenser 20 Since all the cooling water injected into the e) is evaporated, separate cooling water circulation facilities and drainage systems are unnecessary.

In addition, by simply installing the cooling device of the present invention in the conventional air-cooled condenser cooling structure, it is possible to simplify the structure of the cooling device while doubling the cooling efficiency.

In addition, the device structure for spraying and evaporating the coolant is simple, so there is no downtime, the maintenance is very simple, and the electricity consumption is reduced to a minimum to evaporate the coolant, thereby further reducing the electricity bill. do.

On the other hand, the present invention has been described in detail only with respect to the specific examples described above it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, it is natural that such variations and modifications belong to the appended claims. .

1 is a schematic view showing a configuration for cooling the condenser and the operating relationship of the air conditioner according to the present invention,

Figure 2 is a schematic diagram showing the configuration of a first embodiment of a cooling water control unit according to the present invention,

Figure 3 is a schematic diagram showing the configuration of a second embodiment of the cooling water control unit according to the present invention,

4 is a schematic view of a state in which a pump is installed in the condenser cooling device according to the present invention.

* Description of the major symbols in the drawings *

10 compressor 20 condenser

21: piping 22: cooling fan

23: injection nozzle 24: supply piping

25: cooling water control unit 26: high temperature expansion valve

26a: temperature sensor 27: capacity control valve

28: capacity adjusting screw 29: cooling water supply source

30 expansion valve 40 evaporator

P: Pump

Claims (4)

The refrigerant gas compressed by the compressor of the air conditioner is introduced into the condenser and cooled by the cooling fan to the liquid refrigerant, and the refrigerant is introduced into the evaporator through the expansion valve, and the evaporator takes heat from the air while the refrigerant turns into gas and evaporates. In order to cool the surroundings at the same time, through the blowing fan mounted around the evaporator, the outside air passes through the cooling fins of the evaporator to discharge the cold wind, A spray nozzle 23 is installed at one side of the cooling fan 22 to spray and cool the cooling water onto the condenser 20, and the cooling water is adjusted according to the condensation temperature of the refrigerant discharged from the condenser 20. Condenser cooling device for the air conditioner, characterized in that the cooling water control unit (25) is connected and installed to supply to, and the cooling water supply source (29) is connected to the cooling water control unit (25). The method of claim 1, wherein the cooling water control unit 25, The temperature sensor 26a is installed to be adjacent to the pipe 21 through which the refrigerant of the condenser 20 is discharged. The high temperature expansion valve 26 is installed at the 24, and the supply pipe 24 located between the injection nozzle 23 and the high temperature expansion valve 26 has a capacity for adjusting the capacity of the cooling water by the capacity adjusting screw 28. Condenser cooling device for air conditioning, characterized in that the control valve 27 is installed. The method of claim 1, wherein the cooling water control unit 25, The temperature sensor 26a is installed to be adjacent to the pipe 21 through which the refrigerant of the condenser 20 is discharged, and the supply pipe can be controlled to control the presence or absence of cooling water according to the temperature of the refrigerant detected by the temperature sensor 26a. A high temperature expansion valve (26) is installed at (24), and the high temperature expansion valve (26) is connected to a capacity adjusting screw (28) to adjust the capacity of the cooling water. The condenser cooling device for air conditioners according to claim 1, wherein a pump (P) is provided in a supply pipe (24) between the cooling water control unit (25) and the cooling water supply source (29).

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