Pre-cooling outdoor unit and air conditioner

Abstract

The invention provides a pre-cooling outdoor unit and an air conditioner. The pre-cooling outdoor unit comprises a condenser and a pre-cooling device arranged on the air inlet side of the condenser. The pre-cooling device comprises a spraying mechanism and a water supply mechanism; the water supply mechanism is connected to the spraying mechanism, the water supply mechanism is used for supplying water to the spraying mechanism, and the spraying mechanism is used for spraying water to reduce the inlet air temperature of the condenser. Water is sprayed to the air inlet side of the condenser through the water supply mechanism and the spraying mechanism of the pre-cooling device, hot air entering from the outside of the condenser and water in the pre-cooling device are fully subjected to heat exchange, the water is evaporated under the heated condition, a large amount of heat is taken away, the air inlet temperature of the condenser is effectively reduced, the working environment of an outdoor unit is improved, and the service life of the outdoor unit is prolonged. The heat exchange efficiency of the outdoor unit is improved, exhaust pressure and temperature rise are reduced, and the requirements for energy conservation and consumption reduction of the air conditioner are met.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and more particularly to a pre-cooling outdoor unit and an air conditioner. Background Art

[0002] With the rapid development of computer technology, the amount of heat dissipated per unit area in data centers has increased dramatically, placing higher demands on energy conservation and consumption reduction in computer room air conditioners. During harsh summer weather, the energy efficiency of computer room air conditioners significantly decreases, and in some areas, even fails to meet cooling needs. This can lead to equipment failures in data centers, causing user distress and financial losses. More specifically, during high summer temperatures, solar heat radiation and the heat island effect severely impact the operating environment of outdoor air conditioner units, potentially causing inlet air temperatures as high as 45°C. This increased inlet air temperature significantly reduces the heat exchange efficiency of the outdoor unit, while also increasing exhaust pressure and temperature. This increases the power consumption of the indoor unit's compressor, making it more susceptible to tripping or even damage. When compressor exhaust pressure and temperature exceed safety thresholds, the compressor's safety factor decreases, internal gaskets age faster, and lubricant oil oxidizes, weakening its lubrication capacity and reducing bearing lubrication effectiveness. This leads to increased bearing wear and significantly shortens the compressor's service life.

[0003] Therefore, there is an urgent need for a pre-cooling outdoor unit and an air conditioner to achieve pre-cooling of the air entering the outdoor unit, so as to reduce the air entering temperature of the outdoor unit, thereby reducing the energy consumption of the outdoor unit and the air conditioner. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a pre-cooling outdoor unit and an air conditioner to solve the technical problem that the air inlet temperature of the traditional outdoor unit is too high, resulting in high energy consumption of the air conditioner.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a pre-cooling outdoor unit, which includes: a condenser and a pre-cooling device arranged on the air inlet side of the condenser; the pre-cooling device includes: a spray mechanism and a water supply mechanism; the water supply mechanism is connected to the spray mechanism, the water supply mechanism is used to supply water to the spray mechanism, and the spray mechanism is used to spray water to reduce the air inlet temperature of the condenser.

[0007] Wherein, the spray mechanism includes: a water inlet pipe and at least one nozzle; the nozzle is connected to the water outlet end of the water inlet pipe, and the water outlet end of the water inlet pipe is arranged at the top of the air inlet side of the condenser.

[0008] Wherein, the spray mechanism includes: a cover body; the cover body is provided with an air inlet end and an air outlet end, the air outlet end is connected to the air inlet side of the condenser, the air outlet end and the air outlet end are symmetrically arranged, and the nozzle is arranged between the air inlet end and the air outlet end.

[0009] Wherein, the air inlet end is provided with an air inlet grille; and the water inlet pipe is arranged through the air inlet grille.

[0010] Wherein, the air outlet end is provided with a water blocking member; the water blocking member includes a plurality of baffles, and the plurality of baffles are arranged in sequence from top to bottom, and there are gaps between adjacent baffles.

[0011] Wherein, the baffle is arranged to be inclined from the air outlet end toward the bottom of the condenser.

[0012] Wherein, the water supply mechanism includes: a low-temperature cooling source, a water supply pipe and a water pump; the water pump is connected to the spray mechanism and the water outlet end of the water supply pipe, and the water supply pipe is in contact with the low-temperature cooling source.

[0013] Wherein, the water supply mechanism further includes: a return water pipe; the return water pipe is arranged below the spray mechanism, and the water outlet end of the return water pipe is connected to the water inlet end of the water supply pipe.

[0014] Wherein, the low-temperature cooling source is a soil source or a renewable water source.

[0015] In a second aspect, the present invention provides an air conditioner comprising the above-mentioned pre-cooling outdoor unit.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: the present invention adopts the water supply mechanism and the spray mechanism of the pre-cooling device to spray water on the air inlet side of the condenser, so that the hot air entering from the outside of the condenser can fully exchange heat with the water in the pre-cooling device. The water evaporates under heating conditions, taking away a large amount of heat, thereby reducing the temperature of the air entering the pre-cooling device, thereby effectively reducing the condenser inlet air temperature, avoiding the problem of excessively high outdoor unit inlet air temperature due to solar thermal radiation and heat island effect; by spraying water to pre-cool the inlet air, the working environment of the outdoor unit is improved, the heat exchange efficiency of the outdoor unit is improved, the exhaust pressure and temperature rise are reduced, and the risk of compressor tripping failure or damage is reduced, while also reducing air conditioning energy consumption, meeting the high requirements of data centers for energy saving and consumption reduction of computer room air conditioners, effectively avoiding data room equipment failures caused by low air conditioning energy efficiency and insufficient refrigeration, and reducing users' economic losses.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of an air conditioner provided by the present invention;

[0019] Figure 2 A schematic diagram of the overall structure of a pre-cooling outdoor unit provided by the present invention;

[0020] Figure 3 A schematic diagram of water flow direction of a pre-cooling outdoor unit provided by the present invention;

[0021] Figure 4 A schematic diagram of air flow of a pre-cooling outdoor unit provided by the present invention;

[0022] Figure 5 A schematic diagram of the main structure of a spray mechanism of a pre-cooling outdoor unit provided by the present invention;

[0023] Figure 6 A side structural diagram of a spray mechanism of a pre-cooling outdoor unit provided by the present invention;

[0024] Figure 7 This is a structural schematic diagram of a water blocking component of a pre-cooling outdoor unit provided by the present invention.

[0025] Reference numerals:

[0026] 1. Condenser; 2. Pre-cooling device; 21. Spray mechanism; 211. Water inlet pipe; 212. Nozzle; 213. Cover; 214. Air inlet grille; 215. Water blocking member; 2151. Baffle; 22. Water supply mechanism; 221. Low-temperature cooling source; 222. Water supply pipe; 223. Water pump; 224. Return pipe; 225. Embedded pipe; 3. Fan; 4. Evaporator; 5. Refrigerant transmission pipe; 6. Refrigerant return pipe. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0031] Example 1

[0032] See also Figure 1-7 As shown, this embodiment discloses a pre-cooling outdoor unit. The pre-cooling outdoor unit of this embodiment is applied to an air conditioner, especially a computer room air conditioner. During specific implementation, the pre-cooling outdoor unit is connected to the indoor unit of the air conditioner.

[0033] Specifically, the pre-cooling outdoor unit of this embodiment includes: a condenser 1 and a pre-cooling device 2 arranged on the air inlet side of the condenser 1; the pre-cooling device 2 includes: a spray mechanism 21 and a water supply mechanism 22; the water supply mechanism 22 is connected to the spray mechanism 21, the water supply mechanism 22 is used to supply water to the spray mechanism 21, and the spray mechanism 21 is used to spray water to reduce the air inlet temperature of the condenser 1.

[0034] The pre-cooling outdoor unit of this embodiment adopts the water supply mechanism 22 and the spray mechanism 21 of the pre-cooling device 2 to spray water on the air inlet side of the condenser 1, so that the hot air entering from the outside of the condenser 1 can fully exchange heat with the water in the pre-cooling device 2. The water evaporates under the heating condition, taking away a large amount of heat, so that the temperature of the air entering the pre-cooling device 2 is reduced, thereby effectively reducing the air inlet temperature of the condenser 1, avoiding the problem of excessively high air inlet temperature of the outdoor unit due to solar heat radiation and heat island effect; by spraying water to pre-cool the incoming air, the working environment of the outdoor unit is improved, the heat exchange efficiency of the outdoor unit is improved, the rise of exhaust pressure and temperature is reduced, and the risk of compressor tripping failure or damage is reduced, while also reducing air conditioning energy consumption, meeting the high requirements of the data center for energy saving and consumption reduction of computer room air conditioning, effectively avoiding data room equipment failure caused by low air conditioning energy efficiency and insufficient refrigeration, and reducing users' economic losses.

[0035] Specifically, the spray mechanism 21 includes an inlet pipe 211 and at least one nozzle 212; the nozzle 212 is connected to the outlet end of the inlet pipe 211, which is located at the top of the air inlet side of the condenser 1. When water flows through the inlet pipe 211 and reaches the nozzle 212, it is sprayed out in the form of fine water droplets. When the hot air enters the air inlet side of the condenser 1, it will fully contact these water droplets. According to the principle of heat transfer, the heat of the hot air is transferred to the relatively low-temperature water droplets. The water droplets absorb heat and evaporate, and the evaporation process removes a large amount of heat, thereby effectively lowering the air temperature. Because the outlet end of the inlet pipe 211 is located at the top, the water droplets have a longer contact time with the air during their fall, allowing for more complete heat exchange, effectively pre-cooling the air before entering the condenser 1, improving the heat exchange efficiency of the outdoor unit, and thus ensuring the stable operation of the indoor unit and the entire air conditioning system.

[0036] Specifically, the spray mechanism 21 includes a housing 213 having an air inlet and an air outlet, the air outlet being connected to the air inlet side of the condenser 1 and symmetrically arranged with respect to the air outlet. The nozzle 212 is positioned between the air inlet and the air outlet, forming a spray area between the air inlet and air outlet of the housing 213. This means that the spray mechanism 21 sprays water only in the spray area. When hot air from the outside enters the housing 213 through the air inlet, due to the spatial structure of the housing 213, the air can only flow along a predetermined path, passing through the air inlet, the spray area, and the air outlet in sequence. During this process, the water droplets continuously sprayed by the nozzle 212 are fully mixed with the air, and the heat of the hot air is quickly transferred to the water droplets. As the water droplets absorb heat, the water gradually evaporates. The large amount of heat absorbed during the evaporation process comes from the hot air, thereby continuously reducing the air temperature. After the heat exchange, the low-temperature air finally enters the condenser 1 smoothly from the air outlet, providing a low-temperature air source for the efficient heat exchange of the condenser 1. The setting of the cover 213 plays a key role in regulating the air flow path, so that the air is forced to fully exchange heat with the water, effectively avoiding the situation where the hot air directly enters the condenser 1 without being fully cooled, ensuring that the air can be effectively cooled before entering the condenser 1, and improving the working efficiency of the entire pre-cooling system. In actual application, no matter in the case of high temperature or large fluctuation of ambient temperature, the cover 213 structure can ensure that the temperature of the air entering the condenser 1 is maintained at a low level, significantly improving the overall performance of the outdoor unit; at the same time, the cover 213 stabilizes the pre-cooling effect by forcing the airflow to flow in a directional manner and reducing environmental interference. The stable pre-cooling effect helps to reduce the energy consumption of the air conditioner, reduce the frequent start and stop of the compressor, and extend the service life of the compressor and other key components, thereby ensuring the stability of the ambient temperature inside the computer room, providing a good operating environment for communication equipment, servers and other electronic equipment in the computer room, reducing the risk of equipment failure due to unstable temperature, and improving the reliability and safety of data center operation.

[0037] Specifically, an air inlet grille 214 is provided at the air inlet end. More specifically, in this embodiment, the air inlet grille 214 includes a plurality of horizontal bars and a plurality of vertical bars. The horizontal bars are perpendicular to the vertical bars, and the plurality of horizontal bars are arranged linearly in the horizontal direction, while the vertical bars are arranged linearly in the vertical direction. The air inlet grille 214 provides preliminary filtration of the air entering the outdoor unit, effectively blocking larger debris in the air, such as leaves, paper scraps, and insects, to prevent such debris from entering the spray mechanism 21, clogging the nozzle 212, or affecting the normal spraying process. At the same time, the evenly arranged bar structure of the air inlet grille 214 provides a uniform channel for air to enter the spray mechanism 21, allowing the air to be evenly dispersed when passing through the air inlet end. The setting of the air inlet grille 214 ensures the cleanliness of the air entering the spray mechanism 21, effectively prevents debris from clogging the nozzle 212, and avoids uneven water spraying or failure to spray water due to clogging of the nozzle 212, thereby ensuring that the water spraying effect and heat exchange efficiency are not affected, and also helps to reduce dust accumulation inside the outdoor unit, reduce the maintenance frequency and maintenance cost of the outdoor unit, extend the service life of the outdoor unit, and improve the reliability and stability of the entire air-conditioning system; at the same time, the evenly dispersed incoming air can be more fully in contact with the water, thereby improving the pre-cooling effect. In actual operation, the stable pre-cooling effect helps to maintain the stable operation of the outdoor unit, reduce problems such as compressor overload and increased exhaust pressure caused by excessively high inlet air temperature, and ensure the normal operation of the compressor and other key components.

[0038] It is understood that in other embodiments, a filter or louver may be used instead of the air inlet grille 214. The filter can filter out tiny impurities such as dust and pollen in the air, improving the cleanliness of the air entering the spray mechanism 21. The angle of the louver can be adjusted to control the air intake volume and direction, ensuring uniform air intake while also blocking debris.

[0039] Specifically, the water inlet pipe 211 is provided through the air inlet grille 214. The water inlet pipe 211 is provided through the air inlet grille 214 so that the water inlet end of the water inlet pipe 211 is located outside the air inlet grille 214 and the water outlet end is located deep inside the spraying area. This facilitates the connection and maintenance of the water inlet pipe 211 and the water supply mechanism 22, greatly reduces the space occupied by the water inlet pipe 211 in the spraying area, and thus improves the space utilization of the spraying area, increases the space and time for hot air to contact water, thereby achieving sufficient heat exchange between water and hot air, and thus improving the cooling effect of the hot air.

[0040] Specifically, a water-blocking member 215 is provided at the air outlet; the water-blocking member 215 comprises a plurality of baffles 2151, which are arranged sequentially from top to bottom, with gaps between adjacent baffles 2151. The provision of the water-blocking member 215 effectively blocks splashing of water droplets during spraying, preventing water droplets from entering the condenser 1, thereby protecting the normal operation of the condenser 1 and avoiding corrosion, short circuits, and other faults caused by water droplets, thereby extending the service life of the condenser 1. Furthermore, the gaps between the baffles 2151 ensure that air can pass through the water-blocking member 215 normally, thereby smoothly exchanging heat with the condenser 1.

[0041] Specifically, the baffle 2151 is tilted from the air outlet end toward the bottom of the condenser 1. The tilted setting of the baffle 2151 allows water droplets to flow smoothly downward along the lower surface of the baffle 2151 under the action of gravity. The tilted baffle 2151 can also allow water droplets to slide down quickly, avoiding the retention of water droplets on the baffle 2151, ensuring the continuous and effective operation of the water blocking member 215, improving the drainage efficiency and water blocking effect of the water blocking member 215, and further improving the dryness of the air entering the condenser 1; at the same time, the tilted setting of the baffle 2151 will not cause a significant obstruction to the flow of air, and the air can still smoothly pass through the water blocking member 215 into the condenser 1, ensuring the normal flow of air and temperature stability.

[0042] In this embodiment, the angle between the baffle 2151 and the horizontal plane where the top end of the baffle 2151 is located is 25-30 degrees. When air passes through the water blocking member 215, due to the angle setting of the baffle 2151, the airflow direction will change appropriately, so that the water droplets can be effectively separated, ensuring the water droplet separation efficiency of the water blocking member 215 and the smooth passage of air, thereby achieving a good air-water separation effect, providing dry air intake for the condenser 1, and within the angle range of 25-30°, the water droplets can slide down the surface of the baffle 2151 at a suitable speed, and will not accumulate on the baffle 2151 due to the angle being too small, causing the water droplets to slide down too slowly, nor will they splash due to the angle being too large, causing the water droplets to slide down too quickly. At the same time, this angle has relatively little obstruction to the air flow, and the air can pass through the water blocking member 215 more smoothly, and provides a guiding effect for the flow of the air, so that the air flows to the bottom of the condenser 1, and then flows upward from the bottom of the condenser 1, increasing the contact and heat exchange time between the air and the condenser 1, further improving the overall performance of the outdoor unit, and helping to reduce the energy consumption of the outdoor unit.

[0043] Preferably, a wet curtain (not shown) is further provided between the air inlet and the air outlet of the cover body 213. The wet curtain is a paper honeycomb structure material with a corrugated fiber design on its surface. Water droplets flow from top to bottom under the action of gravity. When they contact the wet curtain, a pleated water film with a total area equivalent to more than 10 times the outer area of the wet curtain is formed on the corrugated fiber surface of the wet curtain, thereby increasing the contact area between the water film and the air. Under the action of the fan 3, the outdoor unit forms an air pressure difference between the air inlet side of the condenser 1 and the inside of the condenser 1, thereby increasing the flow rate of the airflow. When the fast-flowing air passes through the wet curtain, the airflow collides with the water film of the wet curtain, so that the heat in the air is quickly absorbed by the water film over a wide area. The water in the water film absorbs the heat in the air and evaporates, taking away a large amount of heat, thereby reducing the temperature of the air passing through the wet curtain, thereby achieving the purpose of cooling. Moreover, the higher the temperature, the faster the water droplets evaporate under the action of the wet curtain, and the more obvious the cooling effect. The setting of the wet curtain increases the contact area between water and air, prolongs the heat exchange time, greatly improves the heat exchange efficiency, and allows the air entering the condenser 1 to participate in the subsequent heat exchange process at a lower temperature, creating better working conditions for the condenser 1.

[0044] Specifically, the water supply mechanism 22 comprises a low-temperature cooling source 221, a water supply pipe 222, and a water pump 223. The water pump 223 is connected to the spray mechanism 21 and the outlet end of the water supply pipe 222, which is in contact with the low-temperature cooling source 221. In this embodiment, the water supply mechanism 22 is located below the spray mechanism 21. As water flows through the water supply pipe 222, it exchanges heat with the low-temperature cooling source 221, lowering its temperature. The water pump 223 delivers the low-temperature water to the nozzle 212 of the spray mechanism 21. The sprayed low-temperature water comes into contact with the hot air, removing heat from the air through heat transfer and water evaporation, effectively cooling the incoming air. Using the low-temperature cooling source 221 to cool the water ensures a low temperature for the spray water, enhancing the driving force for heat exchange between water and air, significantly improving the pre-cooling effect, reducing air conditioning energy consumption, and increasing the efficiency and stability of the outdoor unit in high-temperature environments.

[0045] Specifically, the water supply mechanism 22 also includes: a return pipe 224; the return pipe 224 is arranged below the spray mechanism 21, and the water outlet end of the return pipe 224 is connected to the water inlet end of the water supply pipe 222. More specifically, the water inlet end of the return pipe 224 is arranged at the bottom of the cover body 213. The water after spraying does not evaporate, and drips to the bottom of the spray mechanism 21 under the action of gravity. This water is collected by the return pipe 224, transported back to the water supply pipe 222, and re-enters the low-temperature cooling source 221 for cooling, forming a water circulation system. The recycled water continues to exchange heat with the hot air to ensure the continuity of the pre-cooling process. The setting of the return pipe 224 realizes the recycling of water resources, reduces water resource waste, and reduces operating costs; at the same time, it ensures the stability of the water supply, so that the spray mechanism 21 is continuously supplied with low-temperature water, maintains a stable pre-cooling effect, and ensures the long-term and efficient operation of the outdoor unit.

[0046] Specifically, the low-temperature cooling source 221 is a soil source or a renewable water source. Soil sources have relatively stable temperatures. At a certain depth underground, the temperature fluctuates little throughout the four seasons. The water supply pipe 222 contacts the soil, allowing the water to exchange heat with the low-temperature soil, achieving cooling. Renewable water sources include, but are not limited to, groundwater and lake water, which are generally relatively low and stable in temperature. The water supply pipe 222 is immersed in these sources or the outer wall of the water supply pipe 222 contacts them, allowing the water in the water supply pipe 222 to exchange heat with the renewable water source, lowering the water temperature before being used for spray pre-cooling. Using a soil source or a renewable water source as the low-temperature cooling source 221 is environmentally friendly and energy-saving, reducing dependence on traditional energy sources and significantly reducing operating costs. Furthermore, the stable low-temperature cooling source 221 can ensure the low temperature of the spray water, improving the pre-cooling effect and enhancing the adaptability and operational stability of the outdoor unit in different environments.

[0047] Specifically, the water supply mechanism 22 also includes a pre-buried pipe 225, which is located within the low-temperature cooling source 221. The return pipe 224 and the supply pipe 222 are connected to both ends of the pre-buried pipe 225. The pre-buried pipe 225 forms a closed channel within the low-temperature cooling source 221. Water in the return pipe first enters the pre-buried pipe 225, undergoes a thorough heat exchange with the low-temperature cooling source 221, and is then transported to the spray mechanism 21 through the supply pipe 222 after its temperature is lowered. The provision of the pre-buried pipe 225 prolongs the heat exchange path and duration between the water and the low-temperature cooling source 221, effectively cooling the water and ensuring that the water used for spraying remains at a low temperature. This in turn enhances the cooling capacity of the pre-cooling outdoor unit.

[0048] Specifically, the pre-cooling outdoor unit of this embodiment further includes: a fan 3; the fan 3 is arranged on the air outlet side of the condenser 1. When the fan 3 is in operation, suction is generated, which accelerates the air flow speed on the air outlet side of the condenser 1, so that negative pressure is generated on the air inlet side of the condenser 1, driving the outdoor air through the pre-cooling device 2 into the condenser 1, and quickly discharged through heat exchange of the condenser 1. The provision of the fan 3. Increases the air circulation volume and flow rate, strengthens the heat exchange process between the pre-cooling device 2 and the condenser 1 and the air, improves the overall cooling capacity and heat exchange efficiency of the outdoor unit, can process more heat in the same time, reduces the energy consumption of air conditioning, and ensures that the equipment in the machine room operates in a suitable temperature environment.

[0049] In this embodiment, the condenser 1 has two air inlet sides, symmetrically arranged on both side walls of the condenser 1. The number of spray mechanisms 21 matches the number of air inlet sides of the condenser 1 and is arranged corresponding to the air inlet sides of the condenser 1. The air outlet side of the condenser 1 is arranged at the top of the condenser 1, and the fan 3 is located above the condenser 1. The two symmetrical air inlets allow air to enter the condenser 1 evenly from both sides, increasing the air inlet area and the air flow rate. The corresponding spray mechanisms 21 pre-cool the air entering from both sides, and the hot air enters the condenser 1 after sufficient heat exchange with water. At the top air outlet side, the fan 3 extracts and discharges the hot air after heat exchange with the condenser 1. The dual-sided air inlet, the corresponding spray mechanisms 21, and the fan 3 enhance the overall heat exchange effect, reduce the problems of local overheating or poor airflow, and extend the service life of the air conditioner.

[0050] Example 2

[0051] See also Figure 1-7 As shown, this embodiment discloses an air conditioner, including: the pre-cooling outdoor unit of embodiment one.

[0052] The air conditioner of this embodiment is equipped with the pre-cooling outdoor unit of embodiment 1, which effectively avoids the problem of excessively high outdoor unit air inlet temperature caused by solar heat radiation and heat island effect, provides more suitable air inlet conditions for the condenser 1, and significantly improves the overall cooling performance and energy efficiency of the air conditioner; the outdoor unit air inlet temperature is lowered by the pre-cooling device 2, the power consumption of the compressor is reduced, the energy consumption of the air conditioner operation is reduced, and the requirements of the data center for energy saving and consumption reduction of air conditioners are met; at the same time, the stable and efficient cooling effect of the pre-cooling outdoor unit ensures the stability of the indoor ambient temperature, provides a good operating environment for the computer room equipment, and reduces the risk of equipment failure.

[0053] The air conditioner of this embodiment further includes an indoor unit connected to a pre-cooling outdoor unit. The indoor unit includes an evaporator 4, a refrigerant transmission pipe 5, and a refrigerant return pipe 6. The refrigerant transmission pipe 5 has two ends connected to the output end of the evaporator 4 and the condenser 1, respectively. The refrigerant return pipe 6 has two ends connected to the receiving end of the evaporator 4 and the condenser 1, respectively. Specifically, during operation, low-temperature, low-pressure liquid refrigerant in the indoor unit's evaporator 4 absorbs heat from the indoor air and evaporates into gaseous refrigerant. The gaseous refrigerant is then transported through the refrigerant transmission pipe 5 to the condenser 1 of the pre-cooling outdoor unit. In the condenser 1, the high-temperature, high-pressure gaseous refrigerant exchanges heat with the pre-cooled outside air, releasing heat to the air before condensing into a liquid state. The liquid refrigerant then returns to the evaporator 4 of the indoor unit through the refrigerant return pipe 6. The connection between the indoor unit and the pre-cooling outdoor unit, as well as the arrangement of the refrigerant transmission pipe 5 and the refrigerant return pipe 6, constitute an air conditioning refrigeration cycle system. The evaporator 4 absorbs indoor heat to achieve indoor cooling, while the pre-cooling outdoor unit improves the cooling capacity and energy efficiency of the entire system by pre-cooling the air and efficiently dissipating heat through the condenser 1, and can provide a stable low-temperature environment indoors, meeting the strict requirements of data centers and other places for constant low temperatures and ensuring the normal operation of the equipment; at the same time, the efficient refrigeration cycle reduces the energy consumption of the air conditioner and reduces operating costs.

[0054] Preferably, the air conditioner of this embodiment further comprises: an intelligent control system; the intelligent control system can start or shut down the pre-cooling device 2 according to the actual temperature or the optimal operating condition of the air conditioning unit, so that the pre-cooling device 2 is only turned on when the inlet air temperature is high or the environment is harsh, which helps to save resources. A temperature threshold can be set in advance. When the intelligent control system detects that the outdoor temperature is lower than the set temperature threshold, or the indoor cooling load is small, and the air conditioning system can meet the cooling demand without additional pre-cooling, the pre-cooling device 2 is kept closed to avoid idling and energy consumption of the equipment; in scenarios such as hot weather and high-load operation of data center servers, once it is detected that the inlet air temperature of the outdoor unit is approaching the temperature threshold, or the load of the air conditioning unit compressor continues to rise, the pre-cooling device 2 is immediately started, and the water supply mechanism 22 and the spray mechanism 21 work together to efficiently pre-cool the inlet air. The dynamic control mechanism of the intelligent control system enables the pre-cooling device 2 to operate on demand. Compared with the traditional fixed operation mode, it can significantly reduce additional energy consumption. It not only significantly saves water and electricity resources, but also reduces equipment operation wear and tear, and extends the service life of the pre-cooling outdoor unit and related components. It takes into account both energy saving and economy, and fully meets the application needs of data centers and other applications that require efficient energy utilization and strict cost control.

[0055] Preferably, the temperature threshold is 35-40°C. In specific implementation, when the outdoor temperature is lower than the temperature threshold in winter, transitional seasons, and summer, the intelligent control system controls the water pump 223 to shut down, disables the air-cooled pre-cooling device 2, and operates the air conditioner in accordance with a conventional computer room air conditioning system. The fan 3 of the pre-cooling outdoor unit is turned on, causing the condenser 1 of the pre-cooling outdoor unit to exchange heat with the outdoor air to remove heat, thereby causing the evaporator 4 of the indoor unit to exchange heat with the air in the computer room to perform cooling. When the high temperature in summer reaches or exceeds the threshold, the intelligent control system controls the water pump 223 to start. After the water exchanges heat with the soil source, the water is continuously and evenly sprayed in the spraying area through the water supply pipe 222. The fan 3 of the pre-cooling outdoor unit is turned on to allow the outdoor air to enter the pre-cooling device 2. The hot air entering the pre-cooling device 2 fully exchanges heat with the water in the spraying area. The water evaporates under the heating condition, taking away a large amount of air heat, so that the temperature of the air entering the pre-cooling device 2 is reduced, thereby improving the working environment of the pre-cooling outdoor unit and improving the heat exchange capacity of the pre-cooling outdoor unit. After exchanging heat with the pre-cooling outdoor air, the water enters the soil source from the bottom of the cover body 213 through the return pipe 224 and continues to exchange heat with the soil, completing a cycle and then preparing to enter the next cycle.

[0056] The above examples are merely provided to further illustrate the technical content of the present invention for easier understanding by the reader, but do not limit the implementation of the present invention to these examples. Any extension or re-creation of the technology based on the present invention shall be protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A pre-cooling outdoor unit, characterized in that: include: A condenser and a pre-cooling device provided on the air inlet side of the condenser; The pre-cooling device includes: a spray mechanism and a water supply mechanism; The water supply mechanism is connected to the spray mechanism, and the water supply mechanism is used to supply water to the spray mechanism, and the spray mechanism is used to spray water to reduce the air inlet temperature of the condenser.

2. The pre-cooling outdoor unit according to claim 1, characterized in that: The spray mechanism includes: a water inlet pipe and at least one spray head; the spray head is connected to the water outlet end of the water inlet pipe, and the water outlet end of the water inlet pipe is arranged at the top of the air inlet side of the condenser.

3. The pre-cooling outdoor unit according to claim 2, characterized in that: The spray mechanism includes: a cover body; the cover body is provided with an air inlet end and an air outlet end, the air outlet end is connected to the air inlet side of the condenser, the air outlet end and the air outlet end are symmetrically arranged, and the nozzle is arranged between the air inlet end and the air outlet end.

4. The pre-cooling outdoor unit according to claim 3, characterized in that: The air inlet end is provided with an air inlet grille; the water inlet pipe is arranged through the air inlet grille.

5. The pre-cooling outdoor unit according to claim 3, characterized in that: The air outlet end is provided with a water blocking member; the water blocking member includes a plurality of baffles, which are arranged in sequence from top to bottom, and there are gaps between adjacent baffles.

6. The pre-cooling outdoor unit according to claim 5, characterized in that: The baffle is tilted from the air outlet end toward the bottom of the condenser.

7. The pre-cooling outdoor unit according to claim 1, characterized in that: The water supply mechanism includes: a low-temperature cooling source, a water supply pipe and a water pump; the water pump is connected to the spray mechanism and the water outlet end of the water supply pipe, and the water supply pipe is in contact with the low-temperature cooling source.

8. The pre-cooling outdoor unit according to claim 7, characterized in that: The water supply mechanism further includes: a return water pipe; the return water pipe is arranged below the spray mechanism, and the water outlet end of the return water pipe is connected to the water inlet end of the water supply pipe.

9. The pre-cooling outdoor unit according to claim 7, characterized in that: The low-temperature cooling source is a soil source or a renewable water source.

10. An air conditioner, characterized in that: It comprises the pre-cooling outdoor unit as described in any one of claims 1-9.

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