Air conditioner outdoor ground cooling system

Abstract

The application relates to the technical field of air conditioner outdoor unit auxiliary equipment, in particular to an air conditioner outdoor site cooling system; the system comprises an axial flow fan, an atomizing nozzle, a pressurized water pump, a water storage tank and a control cabinet; the atomizing nozzle is arranged in the gap of an outdoor unit, the atomizing nozzle is connected with the water storage tank through a water pipe, and the pressurized water pump is arranged between the water storage tank and the atomizing nozzle; the axial flow fan is arranged on the side of the outdoor unit; a temperature sensor is arranged in the gap of the outdoor unit; and a water level sensor is arranged in the water storage tank; the application optimizes the overall structure and rapidly cools the open site environment of the air conditioner outdoor unit; the pipeline and the atomizing nozzle spray water to the site ground for cooling; the site fan strengthens ventilation, and the pressurized water pump atomizes water spraying, so that the environment temperature of the air conditioner outdoor unit is rapidly reduced; the environment temperature of the outdoor unit on the roof is reduced, conditions for efficient heat dissipation of the condenser in the air conditioner outdoor unit are created, and the normal operation of the air conditioner system in summer is ensured.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for air conditioning outdoor units, specifically an air conditioning outdoor unit ground cooling system. Background Technology

[0002] Many office buildings use VRV or precision computer room air conditioners, whose outdoor units are usually installed centrally on the building's rooftop. Each individual outdoor unit has a fan installed inside. In summer, when the air conditioner is cooling, the outdoor unit starts its internal fan to dissipate heat through the condenser. However, for rooftop areas with multiple outdoor units installed centrally, the intense sunlight and extremely high ambient temperature mean that the fans inside the outdoor units cannot effectively dissipate the heat from the high-temperature air in the environment, often causing the air conditioning system to shut down or trigger alarms for protection.

[0003] In some areas, a method of cooling is used where water mist is sprayed directly onto the high-temperature condenser of the outdoor air conditioning unit. This method is effective in the short term, but it is very easy to cause a large amount of scale to form on the condenser. Once a large amount of scale forms on a thin and dense condenser, it is difficult to remove and will have a serious adverse effect on the heat exchange of the condenser in the later stages. Summary of the Invention

[0004] The purpose of this invention is to provide an air-conditioned outdoor airport ground cooling system to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution;

[0006] An air-conditioned outdoor cooling system includes an axial flow fan, atomizing nozzles, a pressurized water pump, a water storage tank, and a control cabinet;

[0007] A plurality of atomizing nozzles are mounted in the gaps of the outdoor unit, and the atomizing nozzles are connected to a water storage tank via water pipes. A pressurized water pump is located between the water storage tank and the atomizing nozzles. An axial flow fan is mounted on the side of the outdoor unit. A temperature sensor is also provided in the gaps of the outdoor unit, and a water level sensor is also provided in the water storage tank.

[0008] The axial flow fan, pressurized water pump, temperature sensor, and water level sensor are all connected to the control cabinet.

[0009] Furthermore, the outdoor unit units are arranged in a rectangular array, and the atomizing nozzles are arranged in a cross shape between the outdoor unit units;

[0010] Furthermore, the atomizing nozzle is positioned at a height of 45-55cm above the ground, with the nozzle pointing downwards;

[0011] Furthermore, the water storage tank is connected to an external water supply pipeline;

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] This invention optimizes the overall structure to rapidly cool the outdoor environment of the air conditioning unit on the rooftop. Water is sprayed onto the ground through pipes and atomizing nozzles to cool the area. With the combined effect of enhanced ventilation from the site's fans and pressurized atomizing water from the pumps, the ambient temperature of the air conditioning unit is quickly reduced. By lowering the ambient temperature of the rooftop air conditioning unit, conditions are created for efficient heat dissipation of the condenser inside the unit, thus ensuring the normal operation of the air conditioning system in summer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is an application circuit diagram of the control cabinet of the present invention; Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] refer to Figure 1-2 As shown, an air-conditioned outdoor airport ground cooling system includes an axial flow fan 4, an atomizing nozzle 2, a pressurized water pump 6, a water storage tank 5, and a control cabinet 8;

[0018] A number of atomizing nozzles 2 are installed in the gaps of the outdoor unit 1. The atomizing nozzles 2 are connected to the water storage tank 5 through water pipes. The pressurized water pump 6 is installed between the water storage tank 5 and the atomizing nozzles 2. The axial flow fan 4 is installed on the side of the outdoor unit 1. A temperature sensor 3 is also installed in the gaps of the outdoor unit 1. A water level sensor 7 is also installed in the water storage tank 5.

[0019] The axial flow fan 4, the pressurized water pump 6, the temperature sensor 3 and the water level sensor 7 are all connected to the control cabinet 8;

[0020] Furthermore, the outdoor unit 1 is arranged in a rectangular array, and the atomizing nozzles 2 are arranged in a cross shape in the gaps between the outdoor unit 1;

[0021] Furthermore, the atomizing nozzle 2 is positioned at a height of 45-55cm above the ground, with the nozzle facing downwards;

[0022] Furthermore, the water storage tank 5 is connected to an external water supply pipeline;

[0023] In this embodiment, the water tank replenishment speed is usually slower than the water pumping speed of the booster pump 6. When the booster pump 6 empties the water tank, the water tank is allowed a water replenishment time, such as 5 minutes, while the booster pump 6 is stopped, to avoid insufficient water replenishment, which would cause the booster pump to start and stop frequently and thus affect the service life of the booster pump.

[0024] In this embodiment, temperature sensor 3 detects the temperature of the site. When the temperature is higher than the set value, the control system inside the control cabinet 8 will start the axial flow fan 4 to ventilate and cool the site environment. If the temperature is not lowered below the set value after the set time, the control system inside the control cabinet 8 will use water level sensor 7 to determine whether the water tank is short of water. If there is a water shortage, the booster pump 6 will not be started. If there is no water shortage, the control system will start the booster pump 6 while keeping the axial flow fan 4 running. The water stored in the tank is pressurized and then sprayed onto the ground through atomizing nozzle 2. The water sprayed onto the rooftop evaporates rapidly under the action of the axial flow fan 4, absorbing a large amount of heat and thus rapidly lowering the ambient temperature.

[0025] Combination Figure 2 When the outdoor temperature of the rooftop air conditioner is higher than the set value, the internal switch of the temperature controller closes, the AC contactor KM2 is energized, and the motor of the axial fan 4 is energized, and the axial fan 4 starts to work to ventilate and cool the site.

[0026] When KM2 is energized, the time relay KT2 is also energized and begins timing. KT2 can usually be set within 15 to 30 minutes. When the site temperature drops below the set value within the set time, the switch inside the temperature controller opens, KM2 is de-energized, and the axial flow fan 4 stops working. If the site temperature fails to drop below the set value within the set time, the normally open contact of KT2 closes. If there is no water shortage, the intermediate relays KA1 and KA2 do not operate, the AC contactor KM1 is energized, and the pressurized water pump 6 in the diagram is started. The atomizing nozzles 2 in the site begin spraying water onto the ground. The water sprayed onto the rooftop evaporates rapidly under the action of the axial flow fan 4, absorbing a large amount of heat and thus quickly lowering the ambient temperature. When the site temperature drops below the set value, the switch inside the temperature controller opens, KM1 and KM2 are de-energized, and the axial flow fan 4 and the pressurized water pump 6 stop working.

[0027] If the water tank is short of water, the low water level switch in the diagram will close, KA1 will be energized, the normally closed contact of KA1 will open, KM1 will be de-energized, the pressurized water pump will stop working, and only the axial flow fan 4 will provide ventilation and cooling for the site.

[0028] If the water tank is short of water and water is replenished, KA2 and KT1 can ensure that the booster pump stops working for 5 minutes. The stop time can be set within the range of 5 to 10 minutes depending on the water replenishment rate. It may then be restarted. This can avoid insufficient water replenishment, which would cause the booster pump to start and stop frequently, thus affecting the service life of the booster pump.

[0029] This invention optimizes the overall structure to rapidly cool the outdoor environment of the air conditioning unit on the rooftop. Water is sprayed onto the ground through pipes and atomizing nozzles to cool the area. With the combined effect of enhanced ventilation from the site's fans and pressurized atomizing water from the pumps, the ambient temperature of the air conditioning unit is quickly reduced. By lowering the ambient temperature of the rooftop air conditioning unit, conditions are created for efficient heat dissipation of the condenser inside the unit, thus ensuring the normal operation of the air conditioning system in summer.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined by the spirit of the invention.

Claims

1. An air-conditioned outdoor airport ground cooling system, characterized in that, It includes an axial flow fan (4), an atomizing nozzle (2), a pressurized water pump (6), a water storage tank (5), and a control cabinet (8); Several atomizing nozzles (2) are installed in the gap of the outdoor unit (1). The atomizing nozzles (2) are connected to the water storage tank (5) through water pipes. The pressurizing water pump (6) is installed between the water storage tank (5) and the atomizing nozzles (2). The axial flow fan (4) is installed on the side of the outdoor unit (1). A temperature sensor (3) is also installed in the gap of the outdoor unit (1). A water level sensor (7) is also installed in the water storage tank (5). The axial flow fan (4), the pressurizing water pump (6), the temperature sensor (3) and the water level sensor (7) are all connected to the control cabinet (8). The outdoor unit (1) is arranged in a rectangular array, and the atomizing nozzles (2) are arranged in a cross shape in the gaps between the outdoor unit (1); the atomizing nozzles (2) are set at a height of 45-55cm from the ground and the nozzles face downwards; Among them, the temperature sensor (3) detects the temperature of the site. When the temperature is higher than the set value, the control system in the control cabinet (8) will start the axial flow fan (4) to ventilate and cool the site environment. When the temperature is not lowered below the set value after the set time, the control system in the control cabinet (8) will use the water level sensor (7) to determine whether the water tank is short of water. If there is a shortage of water, the pressurized water pump (6) will not be started. If there is no shortage of water, the control system will start the pressurized water pump (6) while keeping the axial flow fan (4) working. The water stored in the tank is pressurized and then sprayed onto the ground through the atomizing nozzle (2). The water sprayed onto the roof surface evaporates quickly under the action of the axial flow fan (4), absorbing a large amount of heat and thus rapidly lowering the ambient temperature.

2. The air-conditioned outdoor airport ground cooling system according to claim 1, characterized in that, The water storage tank (5) is connected to an external water supply pipeline.

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