Integrated condensation refrigeration system

Abstract

The utility model discloses an integrated condensation refrigeration system, and relates to the technical field of machine room cooling, the integrated condensation refrigeration system comprises an air conditioning box and an outdoor closed cooling device, the air conditioning box comprises a box body, an evaporator, a condenser, a throttle valve, a compressor and a heat exchange core body, and an indoor air duct and an outdoor air duct are arranged in the box body. And heat exchange between the indoor air duct and the outdoor air duct is achieved through the heat exchange core body. The condenser is located at the air outlet end of the outdoor air duct, liquid cooling heat dissipation is achieved through the independently-arranged outdoor closed cooling device, and the temperature of the condenser can be rapidly reduced in a liquid cooling heat dissipation mode. Compared with the prior art, according to the embodiment of the utility model, rapid heat dissipation and cooling of the condenser can be realized through an independent liquid cooling heat dissipation mode, so that the heat dissipation effect of the whole system is ensured, and the use effect of the system under the condition that the outdoor temperature is too high is improved.

Description

Technical Field

[0001] This utility model relates to the field of computer room cooling technology, and more specifically, to an integrated condensing refrigeration system. Background Technology

[0002] In recent years, some regions have gradually tightened energy conservation reviews and usage controls on water resources and electricity. Traditional AHUs (Air Handling Units) are mostly used in northern regions with higher altitudes and lower year-round ambient temperatures. However, their effectiveness is significantly reduced in the warmer central and southern regions. This is partly due to the limitations of air-to-air heat exchange in terms of outdoor ambient temperature requirements, and partly due to the high heat dissipation demands on the condenser side during the hot summer months. The condenser is air-cooled, resulting in poor heat dissipation and difficulty in quickly cooling it down. Furthermore, the condenser becomes dirty due to inconvenient maintenance over the years, thus affecting the cooling performance of the refrigerant system. Utility Model Content

[0003] The purpose of this invention is to provide an integrated condensing refrigeration system that can rapidly cool the condenser through a separate liquid cooling method, thereby ensuring the overall system's heat dissipation effect and improving the system's performance in high outdoor temperatures.

[0004] The embodiments of this utility model are implemented as follows:

[0005] This utility model embodiment provides an integrated condensing refrigeration system, including:

[0006] An air conditioning unit includes a housing, an evaporator, a condenser, a throttling valve, a compressor, and a heat exchange core. The evaporator, the compressor, the condenser, and the throttling valve are connected end-to-end to form a circulation loop. The housing has an indoor air duct that communicates with the indoor space and an outdoor air duct that communicates with the outdoor space. The heat exchange core is disposed within the housing and configured to achieve heat exchange between the air in the indoor air duct and the outdoor air duct. The evaporator is disposed at the air outlet of the indoor air duct, and the condenser is disposed at the air outlet of the outdoor air duct.

[0007] An outdoor closed-loop cooling device is connected to the condenser and is configured to provide liquid cooling to the condenser.

[0008] In an optional embodiment, the condenser is laid flat inside the outdoor air duct.

[0009] In an optional embodiment, the outdoor closed-loop cooling device includes a liquid supply line, a return line, a closed-loop heat exchange coil, and a cooling assembly. One end of the liquid supply line is connected to the liquid inlet of the condenser, and the other end is connected to the liquid outlet of the closed-loop heat exchange coil. One end of the return line is connected to the liquid outlet of the condenser, and the other end is connected to the liquid inlet of the closed-loop heat exchange coil. The cooling assembly is correspondingly arranged with the closed-loop heat exchange coil and is configured to cool the closed-loop heat exchange coil.

[0010] In an optional embodiment, the cooling assembly includes a spray pipe and a spray head, the spray pipe being connected to the spray head and configured to supply cooling water to the spray head, and the spray head being disposed above the closed heat exchange coil and configured to spray cooling water onto the closed heat exchange coil.

[0011] In an optional embodiment, the cooling assembly further includes a spray pump and a softened water pan. The softened water pan is disposed below the closed heat exchange coil and is configured to collect cooling water dripping from the closed heat exchange coil. One end of the spray pipe is connected to the softened water pan, and the other end is connected to the spray head. The spray pump is disposed on the spray pipe and is configured to pump the cooling water in the softened water pan to the spray head.

[0012] In an optional embodiment, the cooling assembly further includes a cooling fan disposed above the closed heat exchange coil and configured to blow air toward the closed heat exchange coil.

[0013] In an optional embodiment, the housing is further provided with an indoor fan and an outdoor fan. The outdoor fan is located at the air outlet of the outdoor air duct and on the side of the condenser away from the heat exchange core along the direction of outdoor airflow. The indoor fan is located at the air outlet of the indoor air duct and on the side of the evaporator away from the heat exchange core along the direction of indoor airflow.

[0014] In an optional embodiment, the air conditioning unit further includes a water circulation cooling component disposed within the unit and at least partially disposed at the air inlet end of the outdoor air duct, configured to cool the air entering the heat exchange core.

[0015] In an optional embodiment, the water circulation cooling component includes a cooling wet film and a water supply pipe. The cooling wet film is disposed inside the housing and located at the air inlet end of the outdoor air duct, and is configured to cool the air entering the heat exchange core. The water supply pipe is connected to the top of the cooling wet film and is configured to supply water to the cooling wet film.

[0016] In an optional embodiment, the water circulation cooling assembly further includes a softened water tank, a return water pipe, and a circulation pump. The softened water tank is disposed inside the tank. One end of the return water pipe is connected to the bottom of the cooling wet membrane, and the other end is connected to the upper part of the softened water tank. The end of the water supply pipe away from the cooling wet membrane is connected to the bottom of the softened water tank, and the circulation pump is disposed on the water supply pipe.

[0017] In an optional embodiment, the softened water tank is located below the compressor and is configured to collect the condensate produced by the compressor.

[0018] In an optional embodiment, the integrated condensing refrigeration system further includes a first loop network and a second loop network. There are multiple air conditioning units and multiple outdoor closed-loop cooling devices. The liquid inlet of multiple outdoor closed-loop cooling devices is simultaneously connected to the first loop network, the liquid outlet of multiple outdoor closed-loop cooling devices is simultaneously connected to the second loop network, the liquid outlet of multiple condensers is simultaneously connected to the first loop network, and the liquid inlet of multiple condensers is simultaneously connected to the second loop network.

[0019] The beneficial effects of this utility model embodiment are:

[0020] The integrated condensing refrigeration system provided in this embodiment of the invention features indoor and outdoor air ducts within a housing, with heat exchange cores facilitating heat exchange between the two ducts. Simultaneously, an evaporator, compressor, condenser, and expansion valve are sequentially connected within the housing to form a circulation loop. The evaporator, located at the outlet of the indoor air duct, provides secondary cooling to the indoor air that has undergone primary cooling by the heat exchange cores, further reducing the return air temperature. The condenser, located at the outlet of the outdoor air duct, utilizes a separate outdoor closed-loop cooling device for liquid cooling. This liquid cooling method rapidly lowers the condenser temperature, achieving condensation, and further enhances the condenser's performance with the help of the heat-exchanged outdoor air. Compared to existing technologies, this embodiment of the invention achieves rapid cooling of the condenser through this separate liquid cooling method, ensuring the overall system's heat dissipation effect and improving its performance under conditions of high outdoor temperatures. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1A schematic diagram of the integrated condensing refrigeration system provided in this embodiment of the utility model;

[0023] Figure 2 A partial schematic diagram of an integrated condensing refrigeration system provided in an embodiment of this utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of airflow in the central air conditioning unit;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure of the indoor closed cooling unit;

[0026] Figure 5 for Figure 2 A schematic diagram of the structure of the central air conditioning unit.

[0027] icon:

[0028] 10 - Integrated condensing refrigeration system; 100 - Air conditioning unit; 110 - Unit body; 111 - Indoor air duct; 112 - Outdoor air duct; 113 - Indoor fan; 114 - Outdoor fan; 115 - Outdoor air inlet; 116 - Outdoor air outlet; 117 - Indoor air inlet; 118 - Indoor air outlet; 120 - Evaporator; 130 - Condenser; 140 - Expansion valve; 150 - Compressor; 160 - Heat exchange core; 170 - Water circulation cooling assembly; 171-Cooling wet film; 172-Water supply pipe; 173-Softened water tank; 174-Return water pipe; 175-Circulation pump; 200-Outdoor closed-loop cooling device; 210-Liquid supply line; 220-Return line; 230-Closed-loop heat exchange coil; 240-Cooling components; 241-Spray pipe; 242-Spray head; 243-Spray pump; 244-Softened water tank; 245-Cooling fan; 300-First ring network pipeline; 400-Second ring network pipeline. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] As disclosed in the background section, traditional AHUs typically use an air-to-air heat exchanger and an evaporator to cool the circulating indoor air. However, the condenser inside the enclosure usually employs air-cooling, meaning it is cooled by outdoor air and needs to be placed vertically in an outdoor air duct to maximize its surface area for airflow. This setup significantly reduces the cooling effect in southern regions with high summer outdoor temperatures or other extreme temperatures. The reasons are: 1. The air-to-air heat exchanger has limitations in its ability to withstand high outdoor temperatures; its heat exchange efficiency is poor when outdoor temperatures are too high. 2. The air-cooled condenser makes it difficult to quickly cool down, and the condenser's frequent and inconvenient maintenance leads to dirt buildup, which in turn affects the cooling performance of the refrigerant system (evaporator).

[0036] To address the aforementioned issues, this invention provides a novel integrated condensing refrigeration system that can rapidly cool the condenser through separate liquid cooling, thereby ensuring the overall system's heat dissipation performance and improving its performance in high outdoor temperatures.

[0037] See Figures 1 to 3 This utility model provides an integrated condensing refrigeration system 10, which can rapidly dissipate heat and cool the condenser 130 through a separate liquid cooling method, thereby ensuring the overall system's heat dissipation effect and improving the system's performance in high outdoor temperatures. Furthermore, it reduces the wind resistance of the outdoor air duct 112, thereby reducing system energy consumption and facilitating the maintenance or replacement of the condenser 130, resulting in better maintainability.

[0038] The integrated condensing refrigeration system 10 provided in this embodiment of the utility model includes an air conditioning unit 100 and an outdoor closed-loop cooling device 200. The air conditioning unit 100 includes a housing 110, an evaporator 120, a condenser 130, a throttle valve 140, a compressor 150, and a heat exchange core 160. The evaporator 120, compressor 150, condenser 130, and throttle valve 140 are connected end to end in sequence to form a circulation loop. The housing 110 has an indoor air duct 111 that communicates with the indoor space and an outdoor air duct 112 that communicates with the outdoor space. The heat exchange core 160 is disposed inside the housing 110 and is configured to realize heat exchange between the air in the indoor air duct 111 and the outdoor air duct 112. The evaporator 120 is disposed at the air outlet of the indoor air duct 111, and the condenser 130 is disposed at the air outlet of the outdoor air duct 112. The outdoor closed-loop cooling device 200 is connected to the condenser 130 and is configured to realize liquid cooling heat dissipation for the condenser 130.

[0039] It should be noted that in this embodiment, the evaporator 120, compressor 150, condenser 130, and expansion valve 140 are connected end-to-end by copper pipes to form a circulation loop. The compressor 150 can be a dual-compressor 150 group, which significantly improves energy efficiency and redundancy reliability by using two independent compressors 150. The refrigerant in this circulation loop can be refrigerant, such as R12, R22, R134a, R407c, R410a, R290, or R32, preferably Freon. The refrigerant undergoes liquid cooling in the condenser 130 through the outdoor closed-loop cooling device 200. After cooling, the refrigerant flows into the evaporator 120 through the expansion valve 140, exchanging heat with the air in the indoor air duct 111, thereby cooling the air in the indoor air duct 111. The refrigerant, after heat exchange, is then compressed again by the compressor 150 and flows back into the condenser 130, completing the circulation. It should be noted that the circulation path and heat exchange of the circulation loop can refer to existing AHU systems. The condenser 130 is cooled down quickly by using liquid cooling, which ensures the overall heat dissipation effect of the system and improves the system's performance when the outdoor temperature is high.

[0040] It is worth noting that in this embodiment, the indoor air duct 111 and the outdoor air duct 112 inside the housing 110 are separated from each other, that is, the indoor air and the outdoor air will not circulate with each other. The heat exchange core 160 can be an air-to-air heat exchanger, which has a first air flow channel and a second air flow channel. The first air flow channel is connected to the indoor air duct 111, and the second air flow channel is connected to the outdoor air duct 112. Through the heat exchange between the first air flow channel and the second air flow channel, the heat exchange between the indoor air duct 111 and the outdoor air duct 112 is realized.

[0041] In some embodiments, the condenser 130 is laid flat within the outdoor air duct 112. Specifically, the condenser 130 is disc-shaped and laid flat within the outdoor air duct 112. Since the condenser 130 uses liquid cooling, it does not require a large surface area for heat dissipation and can be laid flat. Here, "laid flat" means that the projected area of ​​the condenser 130 in the airflow direction is smaller than its projected area perpendicular to the airflow direction. By adopting a flat installation method, the surface area facing the wind can be significantly reduced compared to a vertical installation, thereby reducing the wind resistance of the outdoor air duct 112 and thus reducing the overall fan energy consumption, achieving energy saving. Furthermore, the flat installation of the condenser 130 allows for a larger installation space on its working surface (i.e., the surface perpendicular to the airflow direction), facilitating maintenance and repair or replacement of the condenser 130.

[0042] In some embodiments, the housing 110 also includes an indoor fan 113 and an outdoor fan 114. The outdoor fan 114 is located at the air outlet of the outdoor duct 112 and on the side of the condenser 130 away from the heat exchange core 160 along the outdoor airflow direction. The indoor fan 113 is located at the air outlet of the indoor duct 111 and on the side of the evaporator 120 away from the heat exchange core 160 along the indoor airflow direction. Specifically, the indoor fan 113 and the outdoor fan 114 are used to provide aerodynamics for the indoor duct 111 and the outdoor duct 112, respectively. Because the condenser 130 is laid flat, the power consumption of the outdoor fan 114 is reduced, achieving energy saving. Furthermore, the power requirement for the outdoor fan 114 is lower, allowing the use of a lower-power outdoor fan 114, further reducing costs.

[0043] See Figure 3 It is worth noting that the housing 110 in this embodiment is provided with multiple ventilation openings. The housing 110 is provided with an indoor air duct 111 and an outdoor air duct 112. The indoor air duct 111 and the outdoor air duct 112 are separated from each other. The housing 110 is divided into an upper chamber and a lower chamber. The upper chamber can form the outdoor air duct 112, and the upper chamber and the lower chamber can form the indoor air duct 111. The two ends of the upper chamber are the outdoor air inlet 115 and the outdoor air outlet 116 of the outdoor air duct 112, respectively. The upper end of the upper chamber is the indoor air inlet 117, and one end of the lower chamber is the indoor air outlet 118. At the same time, the indoor air duct 111 extends from the upper chamber to the lower chamber. The space between the upper chamber and the lower chamber is an internal ventilation opening. Furthermore, in order to prevent excessive expansion of the indoor air duct 111, a baffle is installed on the side of the internal vent that is away from the indoor air outlet 118. This baffle can guide the flow of indoor air.

[0044] It should be noted that, in this embodiment, the air outlet of the indoor air duct 111 refers to the area between the air-to-air heat exchanger and the indoor air outlet 118; the air inlet of the outdoor air duct 112 refers to the area between the air-to-air heat exchanger and the outdoor air inlet 115; and the air outlet of the outdoor air duct 112 refers to the area between the air-to-air heat exchanger and the outdoor air outlet 116.

[0045] Please continue reading Figure 1 and Figure 2In some embodiments, the integrated condensing refrigeration system 10 further includes a first loop network 300 and a second loop network 400. There are multiple air conditioning units 100 and multiple outdoor closed-loop cooling devices 200. The liquid inlet of each of the multiple outdoor closed-loop cooling devices 200 is simultaneously connected to the first loop network 300, and the liquid outlet of each of the multiple outdoor closed-loop cooling devices 200 is simultaneously connected to the second loop network 400. The liquid outlet of each of the multiple condensers 130 is simultaneously connected to the first loop network 300, and the liquid inlet of each of the multiple condensers 130 is simultaneously connected to the second loop network 400. Specifically, the number of air conditioning units 100 can be N, and the number of outdoor closed-loop cooling devices 200 can be M. N and M can be the same or different. This embodiment uses N as 3 and M as an example for illustration. The specific numbers of N and M are not limited here.

[0046] It should be noted that, in this embodiment, the condenser 130 has a liquid-cooled coil and a circulating coil that exchange heat with each other. The circulating coil is connected to the circulation loop, that is, its two ends are connected to the throttle valve 140 and the compressor 150 through copper pipes, while the two ends of the liquid-cooled coil are connected to the outdoor closed cooling device 200 through pipes. In this embodiment, the liquid inlet and liquid outlet of the condenser 130 refer to the liquid inlet and liquid outlet of the liquid-cooled coil.

[0047] See Figure 4In some embodiments, the outdoor closed-loop cooling device 200 includes a liquid supply line 210, a return line 220, a closed-loop heat exchange coil 230, and a cooling assembly 240. One end of the liquid supply line 210 is connected to the liquid inlet of the condenser 130, and the other end is connected to the liquid outlet of the closed-loop heat exchange coil 230. One end of the return line 220 is connected to the liquid outlet of the condenser 130, and the other end is connected to the liquid inlet of the closed-loop heat exchange coil 230. The cooling assembly 240 is correspondingly arranged with the closed-loop heat exchange coil 230 and is configured to cool the closed-loop heat exchange coil 230. Specifically, the liquid supply line 210 is connected to the second ring network line 400 and is connected to the liquid inlet of the condenser 130 via a pipe. The return line 220 is connected to the first ring network line 300 and is connected to the liquid outlet of the condenser 130 via a pipe, thereby forming a cooling loop with the closed-loop heat exchange coil 230. The cooling loop can be filled with a coolant, which can be R12, R22, R134a, R407c, R410a, R290, or R32, etc. Preferably, the coolant is a mixture of softened water and ethylene glycol with a freezing point of -25°C. The coolant is cooled and dissipated through the closed heat exchange coil 230 and cooling assembly 240 on the outdoor side. After the temperature is reduced, the coolant flows through the supply pipe 210 and the second loop network pipe 400 to the liquid cooling coil of the condenser 130, where it exchanges heat and carries away the heat from the condenser 130. It then flows through the first loop network pipe 300 and the return pipe 220 back to the closed heat exchange coil 230 for circulating heat dissipation. Through liquid cooling, the condenser 130 in the circulating loop can be continuously cooled. Furthermore, the cooling loop provides centralized outdoor heat dissipation, so it can simultaneously supply heat to multiple indoor air conditioning units 100.

[0048] In some embodiments, the cooling assembly 240 includes a spray pipe 241 and a spray head 242. The spray pipe 241 is connected to the spray head 242 and configured to supply cooling water to the spray head 242. The spray head 242 is disposed above the closed heat exchange coil 230 and configured to spray cooling water onto the closed heat exchange coil 230. Specifically, there may be multiple spray heads 242, which are evenly distributed above the closed heat exchange coil 230, while the spray pipe 241 can supply cooling water. The multiple spray heads 242 can spray cooling water onto the surface of the closed heat exchange coil 230, allowing heat exchange between the outside of the closed heat exchange coil 230 and the cooling water, thereby removing internal heat and ensuring heat dissipation effect.

[0049] Furthermore, the cooling assembly 240 also includes a spray pump 243 and a softened water tray 244. The softened water tray 244 is located below the closed heat exchange coil 230 and is configured to collect the cooling water dripping from the closed heat exchange coil 230. One end of the spray pipe 241 is connected to the softened water tray 244, and the other end is connected to the spray head 242. The spray pump 243 is located on the spray pipe 241 and is configured to pump the cooling water in the softened water tray 244 to the spray head 242. Specifically, the softened water tray 244 is correspondingly arranged with multiple spray heads 242, so as to fully catch the cooling water sprayed from the spray head 242 and the cooling water dripping from the closed heat exchange coil 230. At the same time, the softened water tray 244 can temporarily store cooling water for cooling. The cooled water can be pumped back to the multiple spray heads 242 through the spray pump 243 and the spray pipe 241, thereby realizing the recycling of cooling water.

[0050] It should be noted that the cooling water here is softened water, which can be recycled for a long time to reduce the formation of scale and reduce its impact on the conveying effect.

[0051] In some embodiments, the cooling assembly 240 further includes a cooling fan 245, which is disposed above the closed heat exchange coil 230 and configured to blow air toward the closed heat exchange coil 230. Specifically, the cooling fan 245 can blow air toward the closed heat exchange coil 230, thereby blowing surrounding cool air toward the closed heat exchange coil 230 to achieve heat exchange between the air and the closed heat exchange coil 230. In addition, in conjunction with the spray head 242, the cooling fan 245 can promote the evaporation of cooling water, further enhancing the cooling capacity of the cooling water, thereby effectively removing heat from the closed heat exchange coil 230.

[0052] It should be noted that the outdoor closed-loop cooling system (cooling loop) contains a mixture of softened water and ethylene glycol with a freezing point of -25°C. During most operating conditions in transitional seasons (spring and autumn), simply turning on the cooling fan 245 is sufficient to meet cooling requirements. In hot summer weather, however, softened water (cooling water) spraying is required to cool the closed-loop heat exchange coil 230 to meet cooling needs. In winter, the outdoor closed-loop cooling device 200 does not need to be turned on, as the heat exchange core 160 can meet the indoor air supply temperature requirements through air-to-air heat exchange.

[0053] See Figure 5In some embodiments, the air conditioning unit 100 further includes a water circulation cooling component 170, which is disposed within the housing 110 and at least partially disposed at the air inlet of the outdoor air duct 112, and is configured to cool the air entering the heat exchange core 160. Specifically, the water circulation cooling component 170 can cool the air in the outdoor duct with water, thereby further cooling the outdoor air about to enter the air-to-air heat exchanger, thereby improving the heat exchange effect of the air-to-air heat exchanger and further reducing the temperature of the air after heat exchange in the indoor air duct 111.

[0054] The water circulation cooling component 170 includes a cooling wet membrane 171 and a water supply pipe 172. The cooling wet membrane 171 is disposed inside the housing 110 and located at the air inlet of the outdoor air duct 112, configured to cool the air entering the heat exchange core 160. The water supply pipe 172 is connected to the top of the cooling wet membrane 171 and configured to supply water to the cooling wet membrane 171. The water supply pipe 172 may contain softened water, and the water supply pipe 172 supplies water to the cooling wet membrane 171, ensuring a continuous flow of water to the cooling wet membrane 171. After passing through the cooling wet membrane 171, the water exchanges heat with the outdoor air flowing through it, thereby lowering the outdoor air temperature.

[0055] Furthermore, the water circulation cooling component 170 also includes a softened water tank 173, a return water pipe 174, and a circulation pump 175. The softened water tank 173 is located inside the housing 110. One end of the return water pipe 174 is connected to the bottom of the cooling wet membrane 171, and the other end is connected to the top of the softened water tank 173. The end of the supply water pipe 172 away from the cooling wet membrane 171 is connected to the bottom of the softened water tank 173. The circulation pump 175 is mounted on the supply water pipe 172. Specifically, the softened water tank 173 stores a large amount of softened water. Using the softened water to supply water to the cooling wet membrane 171 can effectively reduce scale formation and alleviate clogging. The circulation pump 175, supply water pipe 172, cooling wet membrane 171, return water pipe 174, and softened water tank 173 can form a water circulation loop to achieve circulating cooling. The softening water tank 173 can collect the softened water that has flowed through the cooling wet membrane 171 through the return water pipe 174, and the circulation pump 175 can provide power for the circulation of water.

[0056] In some embodiments, a softened water tank 173 is disposed below the compressor 150 and configured to collect the condensate produced by the compressor 150. Specifically, the compressor 150 produces condensate during operation. In this embodiment, the softened water tank 173 is disposed below the compressor 150 to collect and replenish the condensate, and also to prevent the disorderly dripping of condensate inside the housing 110.

[0057] It should be noted that in this embodiment, the softened water tank 173 can be centrally prepared and supplied by a softened water device in the equipment room. Softened water is pumped to the cooling wet film 171 by the circulating pump 175. The softened water flows naturally from the upper end to the lower end, and then flows back to the softened water tank 173 through the return pipe, thus circulating repeatedly. The softened water tank 173 is located in the lower cavity of the tank 110, so that the softened water can be recovered by gravity. If the liquid level in the softened water tank 173 drops during the circulation process, it is replenished in real time by a mechanical float valve in the softened water tank 173. The wet film cooling of the water circulation cooling component 170 is only used in a few high-temperature conditions in summer and transitional seasons. In winter, it is completely drained to prevent freezing.

[0058] The integrated condensing refrigeration system 10 provided in this embodiment of the present invention operates on the following principle during summer conditions:

[0059] Firstly, the coolant in the cooling loop of the outdoor closed-loop cooling unit 200 is a mixture of softened water and ethylene glycol with a freezing point of -25℃. It is cooled by spraying from the outdoor closed-loop heat exchange coil 230 and the cooling fan 245. After the temperature is lowered, the coolant flows from the supply line 210 and the second loop network 400 to the liquid-cooled coil of the condenser 130, achieving heat exchange and carrying away the heat from the condenser 130. It then flows back to the closed-loop heat exchange coil 230 via the first loop network 300 and the return line 220, achieving circulating heat dissipation. This closed-loop cycle is repeated. Through liquid cooling, the condenser 130 in the circulating loop can be continuously cooled. This system provides centralized outdoor cooling and can simultaneously supply cooling for multiple indoor air conditioners operating at the same time.

[0060] The principle of fresh air treatment on the indoor and outdoor sides of the enclosure 110: In summer, the fresh air on the outdoor side is pre-cooled by the cooling wet membrane 171 and then sent to the heat exchange core 160 to cool the return air in the indoor air duct 111; after passing through the heat exchange core 160, some of the fresh air on the outdoor side continues to blow over the surface of the condenser 130 to cool the condenser 130 a second time; finally, the outdoor air is sent to the outside.

[0061] The principle of indoor return air treatment: The indoor return air passes through the heat exchange core 160 for initial pre-cooling, and then continues to pass through the evaporator 120 for secondary cooling to meet the supply air temperature requirements of the indoor side; the circulation loop system (Freon system) is then repeatedly compressed and circulated for cooling by the compressor 150.

[0062] The integrated condensing refrigeration system 10 provided in this embodiment of the utility model operates on the following principle in winter (considering the low outdoor dry-bulb temperature in winter, if the outdoor temperature in the area is 0℃ or below in winter, the following principle can be followed):

[0063] Firstly, the outdoor closed cooling unit 200 can be completely shut down; and since the coolant is a mixture of softened water and ethylene glycol with a freezing point of -25℃, venting is not required.

[0064] The principle of fresh air treatment on the indoor and outdoor sides of the box 110: In winter, the fresh air on the outdoor side is sent to the heat exchange core 160 to cool the return air in the room; after passing through the heat exchange core 160, the fresh air on the outdoor side is directly sent to the outside by the outdoor fan.

[0065] The principle of indoor return air treatment in the cabinet 110: The indoor return air passes through the heat exchange core 160 and can be directly cooled to the indoor supply air temperature point without the need for secondary cooling by the evaporator 120 (i.e., without the need to turn on the compressor 150); it is sent to the room, absorbs indoor heat, and then circulates back to the indoor return air point.

[0066] In summary, the integrated condensing refrigeration system 10 provided in this embodiment of the present invention has an indoor air duct 111 and an outdoor air duct 112 arranged inside the housing 110, and heat exchange between the indoor air duct 111 and the outdoor air duct 112 is achieved using a heat exchange core 160. Simultaneously, within the housing 110, an evaporator 120, a compressor 150, a condenser 130, and a throttling valve 140 are connected sequentially to form a circulation loop. The evaporator 120 is located at the air outlet of the indoor air duct 111, enabling secondary cooling of the indoor air that has been cooled once by the heat exchange core 160, further reducing the return air temperature. The condenser 130 is located at the air outlet of the outdoor air duct 112, and achieves liquid cooling through a separately provided outdoor closed cooling device 200. This liquid cooling method rapidly reduces the temperature of the condenser 130, achieving condensation, and the condenser 130 can also be further cooled by the outdoor air after heat exchange. This embodiment of the invention enables rapid cooling of the condenser 130 through a separate liquid cooling method, thereby ensuring the overall system's heat dissipation effect and improving the system's performance in high outdoor temperatures. Furthermore, by laying the condenser 130 flat, wind resistance is reduced, thus lowering energy consumption, and the maintenance and replacement of the condenser 130 are also facilitated.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated condensing refrigeration system, characterized in that, include: An air conditioning unit (100) includes a housing (110), an evaporator (120), a condenser (130), a throttle valve (140), a compressor (150), and a heat exchange core (160). The evaporator (120), the compressor (150), the condenser (130), and the throttle valve (140) are connected end to end in sequence to form a circulation loop. The housing (110) has an indoor air duct (111) that communicates with the indoor space and an outdoor air duct (112) that communicates with the outdoor space. The heat exchange core (160) is disposed in the housing (110) and configured to realize heat exchange of air in the indoor air duct (111) and the outdoor air duct (112). The evaporator (120) is disposed at the air outlet of the indoor air duct (111), and the condenser (130) is disposed at the air outlet of the outdoor air duct (112). An outdoor closed-loop cooling device (200) is connected to the condenser (130) and configured to provide liquid cooling to the condenser (130).

2. The integrated condensing refrigeration system according to claim 1, characterized in that, The condenser (130) is laid flat inside the outdoor air duct (112).

3. The integrated condensing refrigeration system according to claim 1 or 2, characterized in that, The outdoor closed-loop cooling device (200) includes a liquid supply line (210), a return line (220), a closed-loop heat exchange coil (230), and a cooling assembly (240). One end of the liquid supply line (210) is connected to the liquid inlet of the condenser (130), and the other end is connected to the liquid outlet of the closed-loop heat exchange coil (230). One end of the return line (220) is connected to the liquid outlet of the condenser (130), and the other end is connected to the liquid inlet of the closed-loop heat exchange coil (230). The cooling assembly (240) is correspondingly arranged with the closed-loop heat exchange coil (230) and is configured to cool the closed-loop heat exchange coil (230).

4. The integrated condensing refrigeration system according to claim 3, characterized in that, The cooling assembly (240) includes a spray pipe (241) and a spray head (242), the spray pipe (241) being connected to the spray head (242) and configured to supply cooling water to the spray head (242), the spray head (242) being disposed above the closed heat exchange coil (230) and configured to spray cooling water onto the closed heat exchange coil (230).

5. The integrated condensing refrigeration system according to claim 4, characterized in that, The cooling assembly (240) also includes a spray pump (243) and a softened water tray (244). The softened water tray (244) is disposed below the closed heat exchange coil (230) and is configured to collect the cooling water dripping from the closed heat exchange coil (230). One end of the spray pipe (241) is connected to the softened water tray (244) and the other end is connected to the spray head (242). The spray pump (243) is disposed on the spray pipe (241) and is configured to pump the cooling water in the softened water tray (244) to the spray head (242).

6. The integrated condensing refrigeration system according to claim 4, characterized in that, The cooling assembly (240) also includes a cooling fan (245) disposed above the closed heat exchange coil (230) and configured to blow air toward the closed heat exchange coil (230).

7. The integrated condensing refrigeration system according to claim 1 or 2, characterized in that, The housing (110) is also equipped with an indoor fan (113) and an outdoor fan (114). The outdoor fan (114) is located at the air outlet of the outdoor air duct (112) and on the side of the condenser (130) away from the heat exchange core (160) along the direction of outdoor airflow. The indoor fan (113) is located at the air outlet of the indoor air duct (111) and on the side of the evaporator (120) away from the heat exchange core (160) along the direction of indoor airflow.

8. The integrated condensing refrigeration system according to claim 1 or 2, characterized in that, The air conditioning unit (100) also includes a water circulation cooling component (170), which is disposed inside the housing (110) and at least partially disposed at the air inlet of the outdoor air duct (112), and is configured to cool the air entering the heat exchange core (160).

9. The integrated condensing refrigeration system according to claim 8, characterized in that, The water circulation cooling component (170) includes a cooling wet membrane (171) and a water supply pipe (172). The cooling wet membrane (171) is disposed inside the housing (110) and located at the air inlet of the outdoor air duct (112). It is configured to cool the air entering the heat exchange core (160). The water supply pipe (172) is connected to the top of the cooling wet membrane (171) and is configured to supply water to the cooling wet membrane (171).

10. The integrated condensing refrigeration system according to claim 9, characterized in that, The water circulation cooling component (170) also includes a softening water tank (173), a return water pipe (174), and a circulation pump (175). The softening water tank (173) is located inside the housing (110). One end of the return water pipe (174) is connected to the bottom of the cooling wet membrane (171), and the other end is connected to the upper part of the softening water tank (173). The end of the water supply pipe (172) away from the cooling wet membrane (171) is connected to the bottom of the softening water tank (173). The circulation pump (175) is located on the water supply pipe (172).

11. The integrated condensing refrigeration system according to claim 10, characterized in that, The softened water tank (173) is located below the compressor (150) and is configured to collect the condensate produced by the compressor (150).

12. The integrated condensing refrigeration system according to claim 1 or 2, characterized in that, The integrated condensing refrigeration system further includes a first ring network pipeline (300) and a second ring network pipeline (400). There are multiple air conditioning units (100) and multiple outdoor closed-loop cooling devices (200). The liquid inlet of multiple outdoor closed-loop cooling devices (200) is simultaneously connected to the first ring network pipeline (300), the liquid outlet of multiple outdoor closed-loop cooling devices (200) is simultaneously connected to the second ring network pipeline (400), the liquid outlet of multiple condensers (130) is simultaneously connected to the first ring network pipeline (300), and the liquid inlet of multiple condensers (130) is simultaneously connected to the second ring network pipeline (400).

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