Air conditioning equipment

Abstract

To solve the problem that since in a technology of cooling air, a cooling method, namely indirect evaporative cooling, which uses the latent heat of water evaporation to directly cool indoor air with outdoor air, has insufficient performance, it is necessary to combine it with a new technology to improve its performance.SOLUTION: For this reason, it is effective to add a new technical method to realize a system that can be used for hybrids by combining indirect evaporative cooling and a heat pump system that compresses and cools a refrigerant, and a specific method and its technology are presented.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] In the air conditioning technology field proposed here, there are some basic issues to be addressed in order to develop the next generation of air conditioning equipment that will be required in the future. 1) Impact of a significant increase in electricity consumption on global warming 2) Concurrent concerns about power shortages 3) Air conditioning and ventilation of the processing space 4) Global warming due to increased use of refrigerants in air conditioners The invention presented here is a core technology for realizing and commercializing a new future air conditioning system that solves these problems, as well as a technology related to the field of practical application. [Background technology]

[0002] Current air conditioners, especially the technology used for cooling, utilize the heat and cold generated by the compression and expansion of refrigerants, but this has led to problems 1) to 4) above. To solve these problems, Patent Document 1 presents a technology for realizing a cooling and dehumidification system that utilizes the latent heat of evaporation of water. According to the abstract, the technology presents a new cooling and dehumidification system equipped with an indirect evaporative cooling device (referred to as a water evaporation indirect cooling air heat exchanger in this proposal) and a laminate of desiccant slips (drying material), which realizes a cooling and dehumidification system with high cooling and dehumidification capabilities. 1. In order to utilize the wet bulb temperature generated by flowing cooling air through the wet channel of the indirect evaporative cooling device of the water evaporation indirect cooling air heat exchanger, a water-retaining agent is attached to the heat transfer surface to form a wet film, which cools the air to be cooled (processed air) passing through the dry channel through the heat transfer surface. 2. To enhance the cooling effect, cooled air and non-cooled air are flowed in counter currents. 3. By extracting a portion of the air to be cooled flowing through the dry channel at its outlet and flowing it through the wet channel in a counterflow direction to the dry channel, this portion of the air is cooled, thereby more efficiently cooling the processed air in the dry channel. The above three technologies are extremely effective in cooling process air with high energy efficiency. However, if the cooling effect is achieved solely through the latent heat of vaporization of water, it is difficult to achieve a sufficient temperature drop, and the cooling effect is only about 1 to 2°C, especially when the humidity of the cooling side air is high (such as on rainy days).

[0003] Therefore, a technology to further improve the cooling effect is presented in Patent Document 2. Patent Document 2 proposes many improvements, such as using a thin aluminum heat transfer plate, forming it into a corrugated plate, and creating two countercurrent air flows. However, some improvement can be expected even with this alone, and Document 3 shows new innovations in the configuration of a water evaporative indirect cooling air heat exchanger and the way the air flows, but it has been found that neither of these methods can provide a cooling effect that is sufficiently practical. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2015-190633 [Patent Document 2] Patent Publication No. 2020-76552 [Patent Document 3] Patent Publication No. 2016-90136 Summary of the Invention [Problem to be solved by the invention]

[0005] The issues with currently popular air conditioning equipment (heat pump air conditioners) are as follows: 1) As its popularity expands, the amount of electricity used will increase, which could become a major cause of global warming. Solution goal: Reduce power consumption 2) The realization of high cooling performance that can cope with the rising temperature of the Earth's atmosphere is accelerating item 1). Solution goal: Ensure efficient cooling performance even at high temperatures 3) Heat pump air conditioners use a large amount of refrigerant, and leakage of this refrigerant accelerates global warming. Solution goal: Drastic reduction in refrigerant usage (to about 1 / 5) 4) The countermeasures against air pollution in the processing space are not effective as air conditioners. Solution goal: Realization of a system that can ventilate and circulate clean air from the outside at the same time as air conditioning 5) Solar power generation is not being used effectively Solution goal: Use solar heat for air conditioning in the evening and morning In addition to the issues arising from needs such as those mentioned above, the technical challenges to resolve them are even more extensive.

[0006] Currently popular air conditioners, known as heat pump air conditioners, use the heat of outdoor air to cool or heat indoor air. They contain a refrigerant. An overview of this system is shown in Figure 1. Air conditioners that compress a refrigerant in a compressor and then use outdoor (or indoor) air to cool the heated refrigerant have been developed and are widespread worldwide. However, as can be seen in Figure 1, this system uses outdoor air, which is the cooling air blown by a blower 10, to cool the finned-tube refrigerant condenser 4. During high-load summer periods, the outdoor air can reach temperatures of around 40°C, reducing the cooling effect of the refrigerant. This increases the refrigerant temperature, increasing the compression work of the refrigerant compressor 6 and increasing power consumption. This reduces the refrigerant circulation flow rate, resulting in a decrease in the air conditioning performance.

[0007] In this air conditioner, refrigerant piping 110 connects outdoor unit 121 and indoor unit 92 to circulate the refrigerant, and depending on the installation condition of the device, the length is usually 5 to 10 meters, which necessitates an increase in the amount of fluorocarbon refrigerant sealed in the piping. As a result of leakage during construction or operation, several tens of percent of the refrigerant is released into the atmosphere, polluting the outdoor air and adversely affecting global warming.

[0008] Furthermore, the indoor unit 92 typically does not have an air duct that functions to ventilate the indoor air, as shown in Figure 1. Even in models with ventilation, there are issues such as the construction burden of passing the ventilation hose and both the exhaust and intake hoses through the exterior walls of the building, concerns about deterioration of the appearance and leaks, the construction costs for both the refrigerant piping and hose (or duct) installation, and the deterioration of heating and cooling performance due to ventilation, i.e., inability to cool or heat, and increased electricity consumption, and these fundamental problems remain unresolved, and these are issues that have prevented the widespread use of ventilation-capable air conditioners that ensure sufficient ventilation.

[0009] The idea of ​​using solar power to cover the electricity consumed by air conditioners has been worked on for a long time, but the times when air conditioners are used for cooling and heating are in the evening, during mealtimes, while sleeping, and after waking up in the morning, so these times do not coincide with the times when solar power is generated, which has prevented practical progress. Local production and consumption of solar-generated electricity to power air conditioners is a desire of many people, and is a future challenge. [Means for solving the problem]

[0010] Cooling with an air conditioner using a heat pump refrigeration cycle consumes a lot of power, resulting in high electricity bills and environmental impact. The technology described in claim 1 aims to alleviate this issue by achieving both high energy efficiency and effective cooling. This technology utilizes the lower wet-bulb temperature and the evaporative cooling effect of water, rather than the conventional cooling method using outdoor air. A method is needed to significantly improve the efficiency of cooling and heat dissipation from the refrigerant heat-dissipating fin-tube heat exchanger (4) to the atmosphere. This method focuses on utilizing the latent heat of evaporation of water, and claim 1 describes the core technology for this purpose. The gist of this technology is that the entire refrigeration cycle is installed within an integrated unit. Drain water extracted from the air by the refrigerant cooling fin-tube heat exchanger is used for water spray evaporation cooling of the condensing heat-dissipating fin-tube heat exchanger. Since this drain water alone is insufficient, tap water is supplied from an external source to ensure sufficient cooling. The drain water and cooling water, including tap water, are stored together in a water tank, and a water pump is used to spray water on the condenser to cool it. This new technology is the basis of this system.

[0011] Figure 1 shows the general configuration of a split-type air conditioner currently on the market. The indoor unit 92 and outdoor unit 121 are installed in separate locations and connected by refrigerant piping and power cables. Figure 1 shows a plan view of the outdoor unit 121 as seen from above, and a side view of the indoor unit as seen from the left. Therefore, the effect of cooling the condenser with drain water, as described above, is difficult to achieve with the current air conditioners shown in Figure 1. The reason for this is that the refrigerant evaporation finned tube heat exchanger 3 and the refrigerant condensation finned tube heat exchanger 4 are separated, as mentioned above, but there are other major issues. This is because the outdoor unit's refrigerant condensation fin tube heat exchanger corresponds to the case where the end faces of the fins are installed vertically as shown in Figure 2, and even if cooling water is sprayed with a sprinkler, it falls without sufficiently wetting the fin surfaces, making it difficult to achieve the effect of cooling the fins and further cooling the refrigerant.In addition, there is no water tank 13 to catch the cooling water that falls, and there is no pump 12 to circulate the cooling water, so continuous cooling is not possible.

[0012] In other words, technology related to the technology of claim 1, including the method of securing and using cooling water, is also important. While we have stated that the commercialization will be based on tap water utilization, we must further develop the technology for rainwater utilization as a system. One of the ultimate goals is to collect rainwater from the ceiling of this air conditioning system and utilize it. From the perspective of water conservation, it is desirable to be able to continue operating the system even when tap water is insufficient for cooling, or in areas with water shortages, when no cooling water is supplied to the refrigerant condensation finned-tube heat exchanger. Specific technologies, such as increasing and adjusting the output of the cooling air blower when a cooling water shortage is detected in the water tank or when the water-saving operation mode is selected, are important so that operation can continue even without spraying water on the refrigerant condensation finned-tube heat exchanger.

[0013] Claim 2 proposes a specific technology for improving condenser performance when water is sprayed, in addition to the technology of claim 1, to actually utilize water evaporation cooling through ventilation and water spraying in air conditioning systems. Because the condenser is both air-cooled and water-evaporatively cooled, specific technical measures are incorporated into an air-cooled finned-tube heat exchanger. In other words, to achieve the cooling effect of water evaporation, the outer surface of the heat-dissipating aluminum fins of the heat exchanger 4 must be thoroughly wetted with cooling water. To achieve this, it is effective to use a pump 12 to continuously spray cooling water onto the heat exchanger 4, as shown in Figure 4. Furthermore, rather than simply installing the heat exchanger vertically as shown in Figure 1, it is necessary to install it in a manner as shown in Figure 2, ensuring that the cooling water is distributed evenly over the aluminum fin surfaces. To improve the cooling effect of the evaporation of cooling water, a finned-tube heat exchanger is installed with the fins positioned vertically, as shown in Figure 1. However, spraying cooling water from the sides or top of the fins to wet the entire heat transfer surface of the fins poses numerous difficulties, and no effective solution has been found. To achieve a uniform spray of cooling water over the entire side of the refrigerant-radiating finned-tube heat exchanger (4) into the inlet air, it is necessary to spray water upstream to create mist-like air or to install multiple sprayers near the fins to thoroughly distribute the cooling water. At the same time, the nozzles of the sprayers must be shaped with very fine holes, which can lead to practical problems, such as clogging due to contamination caused by dirty cooling water.

[0014] Therefore, in order to spray the cooling water not in a mist form but in a slightly larger, fine droplet form to thoroughly wet the outer surface of the fins, the technology presented in claims 2 and 3 optimizes the installation condition of the fin-tube heat exchanger, the condition of the outer surface of the fins, and the shape of the outer surface of the fins. The subject is finned tube heat exchangers, which are widely used as air-cooled refrigerant condensers, and three technical measures are presented. As a premise, the surface of the fins is treated with a hydrophilic coating to promote the spreading of cooling water. The hydrophilic coating is made of silicone and water-based glass components, and has the effect of blending with water and spreading the cooling water over the surface. Of the three approaches, the first technology, shown in the center of Figure 2 (a diagonal installation) and the right (approximately horizontal installation), involves installing the heat exchanger at an angle as shown in Figure 2, rather than vertically as in Figure 1, and spraying coolant from the side using a sprinkler 15. The second technology, shown in Figure 5, divides the flat fin-tube heat exchanger 4 into two halves and uses a sprinkler 14 to spray a large amount of water into the gap between the two halves, allowing for a thorough and extensive spraying of water to both fin-tube heat exchangers. The third technology, shown in Figure 2, is characterized by the inclusion of horizontal grooves 120 molded into the flat surface of each fin. For example, the refrigerant-radiating fin-tube heat exchanger in current air conditioners, as shown in Figure 1, has the fins installed with their side edges vertical. In this state, coolant sprayed from the side quickly runs down the fin surfaces and does not reach the outer surface of the fins, making it difficult to achieve sufficient water evaporation cooling, making the sprinkler cooling method ineffective.

[0015] Therefore, the diagram on the left side of Figure 2 presents a technology that is effective even in vertical installations. Specifically, by using aluminum fins with horizontal grooves 120 shaped as shown, the sprayed cooling water does not fall straight down but instead flows slowly down in a zigzag pattern along the horizontal grooves. During this time, the cooling water penetrates and spreads throughout the fins due to the hydrophilic properties of their outer surfaces, evaporating into the cooling air and lowering its own temperature to cool the aluminum fins, condensing the gas refrigerant flowing inside the tubes 21 and dissipating heat. To optimize the retention and spreading of the sprayed cooling water, it is recommended that the horizontal grooves be shaped to a depth of 0.3 to 0.5 mm and a width of 2 to 4 mm, as shown in Figure 2.

[0016] The right side of Figure 2 shows an example where the installation angle is zero, i.e., the aluminum fin end faces 22 are installed close to horizontal. The cooling water sprayed from above is able to wet the entire surface of the aluminum fins 18 horizontally due to the effect of the horizontal grooves 120, which are formed almost horizontally. However, the surface tension of the water causes water to form bridges between the adjacent aluminum fins on the lower end face of the aluminum heat transfer plate, which impedes the flow of cooling air and actually reduces the cooling effect, which must be avoided. The inclination angle of the aluminum fin end faces of the fin-tube heat exchanger shown on the right side of Figure 2 is approximately 15 degrees, and it should be avoided to incline it any closer to horizontal than this.

[0017] The technology of claim 4 relates to the realization of an integrated cooling unit equipped with both a water evaporative indirect cooling air heat exchanger and the above-mentioned refrigeration cycle, as a new technology that ensures the lowest level of power consumption and the maximum cooling capacity, and the cooling air conditioning devices in Figures 4, 5, and 6 adopt this technology. The water evaporative indirect cooling air heat exchanger (2) is a type of air-to-air heat exchanger that enables cooling without a refrigerant compressor or other equipment, consuming no power other than a fan. It works by spraying cooling water (23) onto the air being cooled, cooling it to nearly its wet-bulb temperature. Its exterior is shown in Figure 3. Multiple aluminum heat transfer surfaces, approximately 0.1-0.15 mm thick and coated with a hydrophilic coating, are stacked with gaps of approximately 3 mm between them. The air being cooled (9) and the air being cooled (7) flow perpendicularly through the gaps between adjacent aluminum heat transfer surfaces (50) in the illustrated direction, while remaining separate and never mixing, exchanging heat with each other. The method and structure for preventing the two airs from mixing are not shown here, but are a well-known technology in the product field known as IDEC (Indirect Evaporative Cooling).

[0018] Claim 4 presents a technology for realizing a cooling and air-conditioning system with even higher performance (high cooling capacity and low power consumption) by adding and incorporating this water evaporative indirect cooling air heat exchanger 2 to the cooling and air-conditioning system realized by claims 1, 2, and 3. This is a technology for adding this water evaporative indirect cooling air heat exchanger 2 to the refrigeration cycle presented in claims 1, 2, and 3, to further cool the air to be cooled without increasing power consumption. The air to be cooled is first cooled in a water evaporative indirect cooling air heat exchanger at the wet-bulb temperature of the air to be cooled by spraying water, then passes through a refrigerant heat-dissipating fin tube heat exchanger 4 cooled at the wet-bulb temperature of the air to be cooled, and is further cooled to a lower temperature by the refrigerant cooling heat-dissipating fin tubes 3, through which refrigerant whose temperature has been further lowered by a refrigeration cycle using a low-pressure refrigerant flows. The effect of both types of coolers has been proven to more than halve total power consumption compared to current air conditioner technology, which uses inverter technology to rotate the compressor 8 at high speed to compress the refrigerant, consuming a large amount of power while pressurizing the refrigerant to achieve cooling performance.

[0019] The technology described in claim 5, examples of which are shown in Figures 4, 5 and 6, is a simple but important technology in which two coolers are installed in upper and lower positions, and most of the cooling water 23 flows into the upper cooler, where it falls naturally into the lower cooler, and then flows into a cooling water tank located at the bottom. The technology shown in claim 6 presents a technology in which the drain water and the sprayed cooling water are all allowed to fall naturally into a water tank and stored within an integrated unit.

[0020] Claim 7 presents a technology in which the pumps for circulating the cooling water described in claims 4, 5, and 6 are performed by a single pump. Claim 8 describes a technology that uses two water evaporative indirect cooling air heat exchangers, arranged vertically in two tiers, to improve cooling performance. The air to be cooled and the cooling water flow vertically in communication with each other, while the air to be cooled flows horizontally separately through the two vertically stacked water evaporative indirect cooling air heat exchangers. This technology is used in the air conditioner shown in Figure 5. Because the volume of the air to be cooled is typically 2 / 3 to 1 / 2 of the volume of the air to be cooled due to the cooling effect of the water spray, a vertically long arrangement such as the one described above is selected in terms of the design of the air velocity distribution, which is determined by ventilation pressure loss. The same reason is also true for water evaporative indirect cooling air heat exchangers with a rectangular, vertically long heat transfer surface, which can be selected to achieve the same effect as when installed in two tiers.

[0021] Claim 9 relates to a technology that allows for the selection of operation at 100% cooling capacity or operation at half capacity or less. Because the refrigeration cycle consumes power to operate the compressor, when weak cooling is selected, it is effective to stop the compressor and operate only the water evaporative indirect cooling air heat exchanger. Similar control is adopted for all types of cooling air conditioners shown in Figures 4, 5, and 6.

[0022] Claim 10 presents a technology to further reduce the supply temperature of the air to be cooled when it is cooled and blown out, thereby improving the cooling effect. This method involves separating approximately 20 to 50% of the amount of air to be cooled and output, and combining it with the air to be cooled to operate as cooling air, thereby further lowering the temperature of the air to be cooled. Specifically, this is shown in the air conditioner shown in Figures 4 and 6, where the air to be cooled by the additional cooling air blower 11 is turned around and added to the air to be cooled.

[0023] Claim 11 presents a technology that, when there is no supply of tap water or rainwater from outside, stops the operation of the cooling water circulation pump 12 by detecting the water level in the water tank or by information from a selection switch, and continues the cooling operation. Claim 12 presents a technology for realizing a cooling air-conditioning device that cools indoor air with outdoor air, using the most basic structural method shown in Figure 4. In this case, the structural method does not include the additional cooling air blower 11 or the intake ventilation blower 17 shown in Figure 4. In contrast, claim 13 is a structure and technology that allows for the selective operation of both cooling operation without ventilation as shown in claim 12 and operation that enables ventilation by activating fans 11, 17, etc. as shown in Figure 4.

[0024] Claim 14 is a method that assumes ventilation, and is an air conditioning system that uses the air outside the building as the air to be cooled and the air inside the building as the air that cools, as shown in Figure 5, and uses all the air volume for ventilation. This 100% ventilation method is effective in places where the air is heavily polluted, such as factories and pig farms, or spaces with high concentrations of carbon dioxide. Claim 15 presents a case where the entire device shown in Figures 5 and 6 is installed inside a building in a manner that eliminates the building exterior wall 16, and both the air to be cooled 7 and the air that cools 9 are air inside the building. In this case, the cooled air can be exhausted either upwards to the outside of the building by an exhaust fan on the ceiling of the building as in Figure 5, or towards the back of the device where there is an opening in the building, and then exhausted outside the building through the opening as in Figure 6. In either case, the major advantage is that the air to be cooled and the flow of the cooled air can be selected to meet various needs arising from the layout and configuration of the building. [Effects of the Invention]

[0025] Currently widely used, this system consists of an outdoor unit and an indoor unit connected by refrigerant piping. Compared to cooling devices commonly known as split air conditioners 1) Power consumption can be halved, significantly reducing the risk of global warming. 2) Therefore, the burden of power consumption costs can be significantly reduced. 3) It can simultaneously achieve cooling and ventilation effects, and can easily demonstrate characteristics that will become increasingly important in air conditioning equipment in the future, such as measures against air pollution and infectious diseases. 4) The amount of refrigerant used in the refrigeration cycle is about one-fifth of that used in conventional air conditioners, making it environmentally friendly. 5) The temperature rise of the exhaust air due to the exhaust heat during cooling is small, and the temperature rise in the exhaust space known as the heat island effect can be significantly reduced. 6) The device can be placed inside a building or in an outdoor space and can be easily used as a spot cooler that uses the cold air blown out. The following effects can be achieved. [Brief explanation of the drawings]

[0026] [Figure 1] This is a diagram showing the configuration of a typical split-type air conditioner that is currently widely used. [Figure 2]The detailed shapes of three examples of aluminum fin shapes of a refrigerant-cooled fin-tube heat exchanger for utilizing the water evaporative cooling effect of an air-conditioning system according to the present invention are shown. [Figure 3] 1 is an external view of a water evaporative indirect cooling air heat exchanger used in a cooling air conditioning system according to the present invention. [Figure 4] 1 is a side cross-sectional view of a cooling air-conditioning apparatus according to the present invention. [Figure 5] FIG. 1 is a side cross-sectional view of a cooling air conditioner that uses 100% ventilation air according to the present invention. [Figure 6] 1 is a side cross-sectional view of a cooling air conditioner that uses 100% outdoor air according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] Figure 4 shows a cooling air conditioning system 1 according to the present invention. Air 7 to be cooled is usually room air, which is doubly cooled as it passes through both water evaporative indirect cooling air heat exchanger 2 and refrigerant-cooled finned tube heat exchanger 5, and is then supplied to the room by blower 8. Water is sprayed onto heat exchanger 2 by sprinkler 15, and onto heat exchanger 4 by sprinkler 14, for water evaporation cooling. Compared to dry-bulb temperature cooling without cooling water spray, the cooling effect is greatly improved by wet-bulb temperature cooling, with 2 to 2.5 times the amount of cooling heat obtained, and the cooled air 7 supplied from the cooling system 1 is sufficiently cooled with little power consumption. The reason for this is that heat exchanger 2, which serves as the cooling means, cools without consuming any power, and the compression ratio of compressor 6, which cools heat exchanger 4, is reduced, so its power consumption is halved. Although fans 8 and 10 consume power at the same rate as a normal air conditioner, the total power consumption of these combined is less than 50% of the power consumed by a normal air conditioner.

[0028] Furthermore, blower 11 bypasses indoor air to the outdoor air side, and blower 17 bypasses outdoor air to the indoor air side, and their operation improves the cooling performance of the cooling and air-conditioning device 1 while also achieving a ventilation effect. In addition, the refrigeration cycle as a cooling system, which is comprised of the refrigerant compressor 6, the water evaporative indirect cooling heat exchanger 2, and the refrigerant radiation finned tube heat exchanger 4 connected by refrigerant piping (not shown), has all of its piping connected by welding within the integrated cooling air conditioner 1, and assembly is completed at the time of shipment from the factory. As for the size of the refrigeration cycle, as shown in Figure 1, compared to the refrigeration cycle of current air conditioners, which is separated into the outdoor unit 121 and the indoor unit 92 and consists of indoor / outdoor connecting refrigerant piping 110, the total length of the piping has been reduced to 1 / 3 to 1 / 5, so the amount of refrigerant to be sealed can also be reduced proportionally.

[0029] Furthermore, when the cooling and air conditioning device 1 is no longer needed and is to be discarded, the refrigeration cycle 24 can be easily removed as a single unit in a welded state and carried to a disposal factory, and there is less concern about refrigerant leakage when removing the intermediate mechanical joints as in current air conditioners. In other words, the risk of refrigerant leakage can be greatly reduced. In addition, the temperature of the air to be cooled 9 in Figure 4 when it is exhausted is low because it has been cooled by the water evaporation cooling effect mentioned above. For example, when operating at an outdoor temperature of 35°C, the exhaust temperature of current air conditioners is 5 to 55°C, whereas this air conditioner will have an exhaust temperature of around 45°C, which has the advantage of causing very little thermal pollution to the surrounding area compared to current air conditioners, which can sometimes cause a scorching hell with their hot air.

[0030] This makes it extremely useful as a spot cooler that uses the cold air blown out in factories and outdoor spaces.Another important practical effect is that when installed at the entrance of an open restaurant or logistics warehouse, the hot air from the exhaust is felt to be extremely soft. [Industrial Applicability]

[0031] Taking advantage of the six advantages of this product as mentioned above, we can expect it to become widespread in the air conditioning market. This market is extremely large, and it can meet the cooling needs of all spaces, including not only residential and other consumer uses, but also stores, factories, work sites, schools, restaurants, hospitals, facilities, pig farms, cow farms, and chicken coops. It is expected to become widespread in the market. As a result, it is expected that there will be a mitigating effect on the global issue of concerns about the negative impact of increasing air conditioner power consumption on global warming, and there is a possibility that requests and support for its widespread use will be made not only by the private sector but also by the public and even national governments, leading to rapid spread. [Explanation of symbols]

[0032] 1. Air conditioning unit 2. Water-evaporative indirect cooling air heat exchanger 3 Refrigerant-Cooled Finned-Tube Heat Exchanger 4 Refrigerant heat dissipation fin tube heat exchanger 5. Dry refrigerant finned tube heat exchanger 6 Refrigerant compressor 7. Cooled air 8. Cooled air blower 9. Cooling Air 10 Cooling air blower 11 Additional cooling air blower 12 Pump 13 Aquarium 14 Sprinkler for refrigerant heat dissipation fin tube heat exchanger 15 Sprinkler for water evaporative indirect cooling air heat exchanger 16 Building exterior wall 17 Air supply ventilation fan 18 Aluminum fins 19 Cooling air intake 20 Cooled air intake 21 tubes 22 Aluminum fin end face 23 Cooling water 24 Refrigeration Cycle 50 Aluminum heat transfer surface 92 Indoor unit 102 Compressor power supply 110 Indoor / outdoor connecting refrigerant piping 120 Yokomizo 121 Outdoor unit 122 Cooling air fan motor 123 Power supply

Claims

1. The refrigerant compressed by the electric compressor is cooled and liquefied in a refrigerant radiation fin tube heat exchanger by cooling air, the liquefied refrigerant is evaporated in a refrigerant cooling fin tube heat exchanger to cool the air to be cooled, and the evaporated gas refrigerant is drawn into the electric compressor to continuously circulate the refrigerant, and this refrigeration cycle is housed in an integrated unit. a pump for circulating the water in the water tank as cooling water; a water tank for receiving and storing water obtained as drain water from the air to be cooled in the refrigerant-cooled finned-tube heat exchanger and falling naturally; cooling water that falls naturally after being pumped up from the water tank by the pump and sprayed on the aluminum fins when cooling the aluminum fins of the refrigerant-radiating finned-tube heat exchanger with cooling air because it does not completely evaporate; and tap water or rainwater sent from outside; and the amount of tap water or rainwater received is adjusted by appropriately controlling the water level in the water tank. The refrigerant heat-radiating fin-tube heat exchanger is cooled by water spray and ventilation with the cooling water and the cooling air.

2. The refrigerant heat-dissipating fin tube heat exchanger is configured with a large number of aluminum fin plate plates whose surfaces are treated with a hydrophilic coating, and a pipeline connecting a large number of parallel tubes that penetrate the aluminum fin plate plates at right angles, and the refrigerant flows inside the pipeline, and the cooling air flows through the gaps held between the large number of aluminum fin plate plates. In this refrigerant heat-dissipating fin tube heat exchanger, the overall outer shape formed by the end faces of the large number of aluminum fin plate plates is flat, 2. The cooling air-conditioning system according to claim 1, wherein the refrigeration cycle is characterized in that the refrigerant radiation finned tube heat exchanger is installed with a cooling water spray device of one of the two spray methods: one in which the flat surface of the flat plate-shaped outer shape of the refrigerant radiation finned tube heat exchanger is inclined and cooling water is sprayed from the flat surface; or two in which the flat surfaces of the flat plate-shaped refrigerant radiation finned tube heat exchanger are installed with a gap between their flat surfaces so that the flat surfaces of the flat plate-shaped refrigerant radiation finned tube heat exchanger face each other, and cooling water is sprayed toward the gap.

3. The refrigerant heat-dissipating fin tube heat exchanger is configured with a large number of aluminum fin plate plates whose surfaces are treated with a hydrophilic coating, and a pipeline connecting a large number of parallel tubes that penetrate the aluminum fin plate plates at right angles, and the refrigerant flows inside the pipeline, and the cooling air flows through the gaps held between the large number of aluminum fin plate plates. In this refrigerant heat-dissipating fin tube heat exchanger, the overall outer shape formed by the end faces of the large number of aluminum fin plate plates is flat, 3. The cooling and air conditioning system according to claim 1, wherein the refrigeration cycle is characterized in that the refrigerant heat dissipation fin tube heat exchanger is a flat plate using an aluminum fin plate with a number of horizontal grooves formed on the flat surface of the aluminum fin plate, and a cooling water spray device is installed to spray water and cool the air by ventilation.

4. a water evaporation indirect cooling air heat exchanger that has a structure in which air to be cooled flows in from a horizontal or vertical direction and air to be cooled flows in from a direction perpendicular to the air to be cooled, and each air flows on both sides of a heat transfer surface made of a number of thin aluminum plates provided inside, and exchanges heat with each other; water is sprayed on the contact surface between the air to be cooled and the heat transfer surface to evaporate, thereby cooling the heat transfer surface and the air to be cooled, and the cooling heat is transferred to the back side of the number of heat transfer surfaces, thereby cooling the air to be cooled without humidifying it; the refrigeration cycle is installed in the integrated unit, and the air to be cooled is cooled by spraying water through the water evaporation indirect cooling air heat exchanger, and then spraying water and cooling air through the refrigerant radiation fin tube heat exchanger, and then exhausting the air; 4. The cooling and air-conditioning system according to claim 1, 2 or 3, wherein the air to be cooled is cooled in the water evaporation indirect cooling air heat exchanger, and then subjected to heat exchange in the refrigerant cooling fin tube heat exchanger to be further cooled to lower its temperature, and then supplied to a target space for cooling.

5. 5. The cooling air-conditioning system of claim 4, wherein the water evaporation indirect cooling air heat exchanger and the refrigerant heat dissipation fin tube heat exchanger of the refrigeration cycle are arranged in vertical positions, and the water tank is installed further below them, so that cooling water sprayed from the top flows down through both heat exchangers in sequence and falls by gravity into the water tank at the bottom, where it is stored.

6. 6. The cooling air-conditioning system according to claim 4, wherein the water evaporation indirect cooling air heat exchanger and the refrigeration cycle are housed in an integrated unit, the refrigerant-cooled finned-tube heat exchanger constituting the refrigeration cycle is installed at a position higher than the water tank, and drain water generated from the air cooled by the refrigerant-cooled finned-tube heat exchanger and unevaporated cooling water sprayed on the water evaporation indirect cooling air heat exchanger and the refrigerant heat dissipation finned-tube heat exchanger both fall naturally into the water tank and are stored therein, and are pumped up by the pump and used as cooling water.

7. 7. The cooling and air conditioning system according to claim 4, 5 or 6, wherein all of the devices of the cooling and air conditioning system are housed in an integrated unit, the air to be cooled and the air that cools are taken in from outside the integrated unit, and after heat exchange, the air is exhausted or supplied to the outside of the integrated unit, and water to be sprayed to cool the water evaporation indirect cooling air heat exchanger and the refrigerant heat dissipation fin tube heat exchanger is supplied by the same pump.

8. 8. The refrigerating air-conditioning system according to claim 4, wherein two of the water evaporation indirect cooling air heat exchangers are installed one above the other, and the air to be cooled and the cooling water flow vertically through the two water evaporation indirect cooling air heat exchangers, and the air to be cooled is divided and flows horizontally through the two water evaporation indirect cooling air heat exchangers.

9. 9. The cooling air-conditioning system according to claim 4, wherein the operation of the electric compressor in the refrigeration cycle is stopped, and the system is switched to an operation in which cooling is performed only by operating the water evaporation indirect cooling air heat exchanger, or the system is automatically switched to this operation.

10. 10. The cooling air-conditioning system according to claim 4, wherein the air to be cooled flowing out of the water evaporation indirect cooling air heat exchanger is divided into two parts, the majority of which is supplied as cold air from the cooling air-conditioning system, and the other part is merged with the air to be cooled before flowing into the water evaporation indirect cooling air heat exchanger to form part of the air to be cooled, which is then flowed into the water evaporation indirect cooling air heat exchanger as the air to be cooled.

11. 11. The cooling and air-conditioning device according to claim 1, wherein the device is capable of switching between an operating mode in which tap water or rainwater supplied from the outside is used as cooling water, and an operating mode in which the pump is stopped and the water evaporation effect is not used when the supply of cooling water from the outside is stopped or becomes insufficient.

12. 12. The cooling and air-conditioning system according to claim 1, wherein air in a space inside a building is used as air to be cooled, and air outside the building is used as air to be cooled, and the air in the space inside the building to be cooled is cooled and then supplied into the building, and the air outside the building is used as air to be cooled and then exhausted outside the building.

13. 12. The cooling and air conditioning device according to claim 1, wherein the cooling and air conditioning device can select an operation in which the air inside the building is used as the air to be cooled and the air outside the building is used as the air to be cooled, and the air inside the building to be cooled is divided into two and supplied to the inside and outside of the building, and the air outside the building to be cooled is also divided into two and supplied to or exhausted from the inside and outside of the building, thereby performing air conditioning with ventilation.

14. The cooling and air conditioning system according to any one of claims 1 to 11, characterized in that the air in the space outside the building is cooled and then supplied into the building, and the air inside the building is used as cooling air and then exhausted outside the building.

15. 12. The cooling and air conditioning system according to claim 1, wherein air inside the building is cooled and supplied to the building as the air to be cooled, and other air inside the building is used as the air to be cooled, and the air is then exhausted to an upper space inside the building or to the outside of the building through a duct, and the air conditioning system main body is installed inside the building.

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