Cooling fan

Abstract

The utility model belongs to the technical field of refrigeration equipment, and provides a cooling fan which comprises a shell, an air inlet and an air outlet are formed in the shell, a wet curtain opposite to the air inlet is arranged in the shell, the shell is further provided with a water supply system and a refrigeration system, the water supply system is used for supplying water to the wet curtain, and the refrigeration system is used for refrigerating the wet curtain. The refrigerating system is used for cooling water supplied to the wet curtain in the water supply system. Compared with the prior art, the cooling fan has the advantages that the refrigerating system is additionally arranged, water in the water supply system is cooled, the evaporation efficiency of the wet curtain is effectively improved, the cooling fan can still keep a good cooling effect in a high-temperature environment, and the refrigerating effect is more remarkable especially in hot summer.

Description

Technical Field

[0001] This application belongs to the technical field of refrigeration equipment, and particularly relates to a cooling fan. Background Art

[0002] In the humidification mode, the cooling fan pumps water to the wet curtain through a water pump, and the main motor drives the wind wheel to rotate, blowing the air through the wet curtain for cooling, filtering, and carrying water vapor out of the air outlet. When the flowing air passes through the wet curtain, the water in the wet curtain absorbs the heat in the air and evaporates. The evaporation process requires heat consumption, thereby taking away a large amount of latent heat, reducing the temperature of the air passing through the wet curtain, and thus achieving the purpose of cooling.

[0003] Therefore, the cooling range of the existing cooling fan depends on factors such as the humidity and temperature of the air, as well as the surface area and water volume of the wet curtain. It can be seen that the refrigeration effect of the existing cooling fan is limited. Especially in hot summer, the indoor temperature is high, the temperature of the air flowing through the cooling fan is high, and less heat can be taken away, resulting in a poor refrigeration effect of the cooling fan. Utility Model Content

[0004] The purpose of this application is to provide a cooling fan. By adding a refrigeration system to cool the water in the water supply system, the evaporation efficiency of the wet curtain is effectively improved, enabling the cooling fan to still maintain a good cooling effect in a high-temperature environment. Especially in hot summer, the refrigeration effect is more significant.

[0005] The technical solution adopted by this application to solve the above technical problems is to propose a cooling fan, including: a housing, on which an air inlet and an air outlet are respectively provided; a wet curtain disposed opposite to the air inlet inside the housing; the housing is further provided with a water supply system and a refrigeration system, the water supply system is used to supply water to the wet curtain, and the refrigeration system is used to cool the water supplied to the wet curtain in the water supply system.

[0006] Through the above technical features, when the cooling fan works, the water supply system pumps the water in the water storage container through a water pump and evenly sprays it on the wet curtain. At this time, the cooling system starts to cool the water in the water supply system. When the flowing air passes through the wet curtain, the water in the wet curtain absorbs the heat in the air and evaporates. The evaporation process requires heat consumption, thereby taking away a large amount of latent heat, reducing the temperature of the air passing through the wet curtain. Since the water in the water supply system has been cooled by the cooling system, the temperature of the wet curtain is lower, so it can absorb more heat and achieve a better cooling effect. Therefore, this application cools the water in the water supply system by introducing a cooling system, the temperature of the wet curtain is lower, so it can absorb more heat and achieve a better cooling effect.

[0007] Preferably, a spray chamber is provided between the housing and the air inlet, the wet curtain is arranged in the spray chamber, a water inlet and a water outlet are respectively arranged at the top and bottom of the spray chamber, and both the water inlet and the water outlet are connected to the water supply system through pipelines.

[0008] With the above technical features, when the cooling fan starts to work, the water supply system is started, and water is evenly sprayed downward from the top of the spray chamber, covering the wet curtain to ensure that the wet curtain remains in a wet state. When the flowing air enters the spray chamber through the air inlet, it will first pass through the wet wet curtain. The water in the wet curtain will absorb the heat in the air and evaporate. The evaporation process requires heat consumption, thereby taking away a large amount of latent heat and reducing the temperature of the air passing through the wet curtain. A water outlet is arranged at the bottom of the spray chamber. The water after passing through the wet curtain flows out through the water outlet and is returned to the water supply system through a pipeline, realizing the recycling of water, reducing the waste of water resources, and maintaining the cleanliness of the water in the spray chamber.

[0009] Preferably, the water supply system is arranged below the spray chamber. The water supply system includes a first water tank, a second water tank and a water pump. The first water tank is located below the second water tank, and the water pump is located below the first water tank. The first water tank is communicated with the water pump through a pipeline, the water pump is communicated with the water inlet through a pipeline, and the second water tank is respectively communicated with the water outlet and the first water tank through pipelines.

[0010] With the above technical features, when the cooling fan is started, the water pump starts to work and pumps water from the first water tank. Since the water pump is located below the first water tank, it can more effectively help the water pump pump water through the action of gravity. The water pumped from the first water tank by the water pump is sent to the water inlet of the spray chamber through a pipeline, realizing the spraying of water from the top to the wet curtain. The water after passing through the wet curtain flows out from the water outlet of the spray chamber and enters the second water tank through a pipeline. The water in the second water tank is returned to the first water tank through another pipeline, realizing the recycling of water. The first water tank serves as the main water supply tank, directly connecting to the water pump to provide a stable water flow for the spray chamber; the second water tank serves as a return water tank, collecting the water flowing out of the spray chamber and returning it to the first water tank through a pipeline to ensure the full utilization of water resources. Therefore, through the cyclic use of the first water tank and the second water tank, the maximization of water resource utilization is achieved, and the waste of water resources is reduced.

[0011] Preferably, a first water level sensor is arranged in the first water tank, and a control valve is arranged between the pipelines of the first water tank and the second water tank.

[0012] Through the above technical features, the first water level sensor provided in the first water tank is used to monitor the water level in the first water tank in real time: when the water level in the first water tank is lower than the set minimum water level, the control valve will open to allow the water in the second water tank to flow back into the first water tank to supplement the water volume; when the water level in the first water tank reaches or exceeds the set maximum water level, the control valve will close or reduce the opening to prevent water from overflowing from the first water tank. Therefore, through the linkage of the first water level sensor and the control valve, the automatic water replenishment and anti-overflow functions of the first water tank are realized, ensuring that the spray chamber can stably obtain the required water volume during the continuous operation of the cold fan, while avoiding waste of water resources.

[0013] Preferably, a second water level sensor is provided in the second water tank.

[0014] Through the above technical features, the second water level sensor continuously monitors the water level change in the second water tank. When the water level is lower or higher than the set threshold, the sensor will send a corresponding signal. According to the signal of the second water level sensor, the system can trigger a corresponding response mechanism. When the water level in the second water tank is too low, water needs to be replenished into the second water tank, or the opening of the control valve is adjusted to increase the water volume flowing from the first water tank to the second water tank. Therefore, by monitoring the water level in the second water tank in real time, water resources can be managed more precisely, ensuring that water can be replenished into the second water tank in time when needed, thus maintaining the normal operation of the system.

[0015] Preferably, the refrigeration system includes a compressor, a condenser and an evaporator. The evaporator is arranged inside the first water tank. The compressor, the condenser and the evaporator are connected by pipelines. Refrigerant circulates in the pipelines. The compressor is used to compress the refrigerant into a high-temperature and high-pressure liquid, the condenser is used to cool down the refrigerant to a high-pressure liquid, and the refrigerant absorbs heat in the evaporator to become a low-pressure gas, thereby cooling the water in the first water tank.

[0016] Through the above technical features, the compressor compresses the refrigerant from a low-pressure gas state into a high-temperature and high-pressure liquid. The high-temperature and high-pressure refrigerant liquid enters the condenser, and through heat exchange with the external environment in the condenser, the heat is released to the outside, thereby reducing the temperature of the refrigerant and turning it into a high-pressure liquid. The refrigerant changes from a high-pressure liquid to a low-pressure gas in the evaporator, and at the same time absorbs the heat of the water in the first water tank around the evaporator, thereby reducing the water temperature. The low-pressure gas refrigerant that has absorbed heat returns to the compressor again, starting a new round of cycle, and continuously providing a refrigeration effect for the water in the first water tank. Therefore, through the cyclic flow of the refrigerant between the compressor, the condenser and the evaporator, the present application realizes efficient refrigeration of the water in the first water tank, can quickly reduce the water temperature, and meets the demand of the cooling fan for low-temperature water. Moreover, compared with the traditional direct ice addition or water cooling method, using the refrigeration system for refrigeration is more energy-saving and environmentally friendly. The refrigerant only undergoes a phase change during the circulation process, which will not cause waste of resources, and at the same time will not produce pollutants.

[0017] Preferably, a cooling fan is connected to the outside of the condenser. The cooling fan is used to cool and dissipate heat from the condenser, and a heat dissipation port is provided on the housing corresponding to the cooling fan.

[0018] Through the above technical features, in the refrigeration system, the refrigerant changes from a gaseous state to a liquid state at the condenser, and a large amount of heat will be released during this process. In order to ensure the efficient operation of the condenser, it is necessary to dissipate this heat to the environment in time. By installing the cooling fan on the outside of the condenser, when the refrigeration system starts to work, the cooling fan starts synchronously. The rotation of the fan generates an air flow, which forcibly blows the ambient air towards the surface of the condenser, taking away the heat accumulated on the condenser. And on the housing of the cooling fan, a heat dissipation port is provided corresponding to the position of the cooling fan, allowing external air to enter the inside of the cooling fan to exchange heat with the condenser, and at the same time allowing hot air to be discharged from the inside, forming an effective air convection. Therefore, through the forced convection heat dissipation of the cooling fan, the heat dissipation efficiency of the condenser can be significantly improved, ensuring the efficient liquefaction of the refrigerant in the condenser, and thus improving the operating efficiency of the entire refrigeration system.

[0019] Preferably, a cross-flow fan is further provided in the housing between the air inlet and the air outlet.

[0020] Through the above technical features, the cross-flow fan ensures the rapid flow of air inside the cooling fan through forced convection, improving the cooling effect of the cooling fan.

[0021] In summary, the present application has the following beneficial effects:

[0022] (1) By introducing a cooling system to cool the water in the water supply system, the temperature of the wet curtain is lower, so it can absorb more heat and achieve a better cooling effect;

[0023] (2) By recycling the first water tank and the second water tank, the present application realizes the maximum utilization of water resources and reduces the waste of water resources.

[0024] (3) Through the linkage of the first water level sensor and the control valve, the present application realizes the automatic water replenishment and anti-overflow functions of the first water tank, ensuring that the spray chamber can stably obtain the required amount of water during the continuous operation of the cold fan, while avoiding the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of a partial structure of an embodiment of the present application Figure 1 ;

[0027] Figure 3 is a schematic diagram of a partial structure of an embodiment of the present application Figure 2 .

[0028] In the figure, 1 is the housing; 11 is the air inlet; 12 is the air outlet; 13 is the wet curtain; 14 is the spray chamber; 141 is the water inlet; 142 is the water outlet; 15 is the heat dissipation port; 16 is the cross-flow fan; 2 is the water supply system; 21 is the first water tank; 22 is the second water tank; 23 is the water pump; 3 is the refrigeration system; 31 is the compressor; 32 is the condenser; 321 is the cooling fan; 33 is the evaporator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following are specific embodiments of the present application and, in combination with the accompanying drawings, further describe the technical solutions of the present application, but the present application is not limited to these embodiments.

[0030] As Figure 1 , Figure 2 shown, the present application discloses a cold fan, including: a housing 1, on which an air inlet 11 and an air outlet 12 are provided, and a cross-flow fan 16 is further provided between the air inlet 11 and the air outlet 12. The cross-flow fan ensures the rapid flow of air from the air inlet 11 to the air outlet 12 through forced convection.

[0031] In the present application, a spray chamber 14 is provided between the housing 1 and the air inlet 11, a wet curtain 13 is provided in the spray chamber 14, and the wet curtain 13 corresponds to the position of the air inlet 11. A water inlet 141 and a water outlet 142 are respectively provided at the top and bottom of the spray chamber 14, and both the water inlet 141 and the water outlet 142 are connected to the water supply system 2 through pipelines.

[0032] As Figure 3As shown, the water supply system 2 in this application includes a first water tank 21, a second water tank 22, and a water pump 23. The first water tank 21 is located below the second water tank 22, and the water pump 23 is located below the first water tank 21. The first water tank 21 is connected to the water pump 23 through a pipeline, the water pump 23 is connected to the water inlet 141 through a pipeline, and the second water tank 22 is connected to the water outlet 142 and the first water tank 21 through pipelines respectively.

[0033] When the cold fan is started, the water pump 23 starts to work and draws water from the first water tank 21. Since the water pump 23 is located below the first water tank 21, it can more effectively help the water pump 23 draw water by the action of gravity. The water drawn from the first water tank 21 by the water pump 23 is sent to the water inlet 141 of the spray chamber 14 through a pipeline, realizing that water is sprayed from the top onto the wet curtain 13. The water after passing through the wet curtain 13 flows out from the water outlet 142 of the spray chamber 14 and enters the second water tank 22 through a pipeline. The water in the second water tank 22 returns to the first water tank 21 through another pipeline, realizing the recycling of water.

[0034] In this application, in order to monitor the water level in the first water tank 21 in real time and realize the automatic water replenishment and anti-overflow functions of the first water tank 21, a first water level sensor is provided in the first water tank 21, and a control valve is provided between the pipelines of the first water tank 21 and the second water tank 22. When the water level in the first water tank 21 is lower than the set minimum water level, the control valve will open to allow the water in the second water tank 22 to flow back to the first water tank 21 to supplement the water volume; when the water level in the first water tank 21 reaches or exceeds the set maximum water level, the control valve will close or reduce the opening to prevent water from overflowing from the first water tank 21.

[0035] In this application, in order to maintain the normal operation of the system, a second water level sensor is provided in the second water tank 22. When the water level is lower than or higher than the set threshold, the sensor will send corresponding signals. According to the signals of the second water level sensor, the system can trigger corresponding response mechanisms. When the water level in the second water tank 22 is too low, water needs to be supplemented to the second water tank 22, or the opening of the control valve is adjusted to increase the water volume flowing from the first water tank 21 to the second water tank 22.

[0036] In this application, in order to cool the water in the first water tank 21 and improve the refrigeration effect of the cold fan. In this application, a refrigeration system 3 is provided below the water supply system 2.

[0037] The refrigeration system 3 includes a compressor 31, a condenser 32, and an evaporator 33 connected by pipelines. The compressor 31 compresses the refrigerant from a low-pressure gas state into a high-temperature and high-pressure liquid. The high-temperature and high-pressure refrigerant liquid enters the condenser 32, and through heat exchange with the external environment in the condenser 32, the heat is released to the outside, thereby reducing the temperature of the refrigerant and turning it into a high-pressure liquid. The refrigerant changes from a high-pressure liquid to a low-pressure gas in the evaporator 33, and at the same time absorbs the heat of the water in the first water tank 21 around the evaporator 33, thereby reducing the water temperature. The low-pressure gas refrigerant that has absorbed heat returns to the compressor 31 again, starting a new round of cycle, and continuously providing a refrigeration effect for the water in the first water tank 21.

[0038] The refrigerant changes from a gaseous state to a liquid state at the condenser 32, and a large amount of heat is released during this process. To ensure the efficient operation of the condenser 32, it is necessary to dissipate this heat to the environment in a timely manner. Therefore, in this application, a cooling fan 321 is provided outside the condenser 32. The rotation of the cooling fan 321 generates an air flow, which forcibly blows the ambient air towards the surface of the condenser 32, taking away the heat accumulated on the condenser 32, improving the heat dissipation efficiency of the condenser 32, ensuring the efficient liquefaction of the refrigerant in the condenser 32, and thus improving the operating efficiency of the entire refrigeration system 3.

[0039] Working principle: When the cooling fan works, the water supply system 2 pumps the water in the water storage container through the water pump 23 and evenly sprays it on the wet curtain 13. At this time, the cooling system starts to cool the water in the water supply system 2. When the flowing air passes through the wet curtain 13, the water in the wet curtain 13 absorbs the heat in the air and evaporates. The evaporation process requires heat consumption, thereby taking away a large amount of latent heat and reducing the temperature of the air passing through the wet curtain 13. Since the water in the water supply system 2 has been cooled by the cooling system, the temperature of the wet curtain 13 is lower, so it can absorb more heat and achieve a better cooling effect.

[0040] The specific embodiments described herein are merely illustrative of the present application. Those skilled in the art to which the present application pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the scope defined by the present application.

Claims

1. A cooling fan, characterized in that: include: A shell (1), wherein the shell (1) is respectively provided with an air inlet (11) and an air outlet (12), wherein a wet curtain (13) is arranged opposite to the air inlet (11) in the shell (1), and wherein the shell (1) is further provided with a water supply system (2) and a refrigeration system (3), wherein the water supply system (2) is used for supplying water to the wet curtain (13), and the refrigeration system (3) is used for cooling the water supplied to the wet curtain (13) in the water supply system (2).

2. A cooling fan according to claim 1, characterized in that: A spray chamber (14) is provided between the shell (1) and the air inlet (11), the wet curtain (13) is arranged in the spray chamber (14), and a water inlet (141) and a water outlet (142) are provided at the top and bottom of the spray chamber (14), respectively, and the water inlet (141) and the water outlet (142) are both connected to the water supply system (2) through a pipeline.

3. A cooling fan according to claim 2, characterized in that: The water supply system (2) is arranged below the spray chamber (14), and comprises a first water tank (21), a second water tank (22) and a water pump (23); the first water tank (21) is located below the second water tank (22); the water pump (23) is located below the first water tank (21); the first water tank (21) and the water pump (23) are connected via a pipeline; the water pump (23) and the water inlet (141) are connected via a pipeline; the second water tank (22) is connected via pipelines to the water outlet (142) and the first water tank (21), respectively.

4. A cooling fan according to claim 3, characterized in that: A first water level sensor is provided in the first water tank (21), and a control valve is provided between the pipelines of the first water tank (21) and the second water tank (22).

5. A cooling fan according to claim 3, characterized in that: A second water level sensor is arranged in the second water tank (22).

6. A cooling fan according to claim 3, characterized in that: The refrigeration system (3) comprises a compressor (31), a condenser (32) and an evaporator (33); the evaporator (33) is arranged on the inner side of the first water tank (21); the compressor (31), the condenser (32) and the evaporator (33) are connected by a pipeline, and a refrigerant circulates in the pipeline; the compressor (31) is used to compress the refrigerant into a high-temperature and high-pressure liquid; the condenser (32) is used to cool the refrigerant into a high-pressure liquid; the refrigerant absorbs heat in the evaporator (33) and becomes a low-pressure gas, thereby cooling the water in the first water tank (21).

7. A cooling fan according to claim 6, characterized in that: The outer side of the condenser (32) is connected to a cooling fan (321), and the cooling fan (321) is used to cool and dissipate heat for the condenser (32). A heat dissipation port (15) is provided on the housing (1) at a location corresponding to the cooling fan (321).

8. The cooling fan according to claim 1, characterized in that: A through-air blower (16) is also provided in the housing (1) between the air inlet (11) and the air outlet (12).

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