Cooling system
By combining mechanical refrigeration systems and pre-cooled evaporators in the cooling tower, the high power consumption problem in the high temperature season of the data center is solved, and more efficient cooling effect and lower system footprint are achieved, cooling water temperature is reduced and cooling capacity utilization is improved.
Patent Information
- Application Number
- CN202422141725.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Data centers require a lot of mechanical refrigeration during high temperature seasons, resulting in increased power consumption. The cooling towers and chillers cover a large area, the cooling water temperature is not low enough, and the cooling capacity provided by natural cooling is insufficient.
Combine the mechanical refrigeration system in the cooling tower, reduce the air temperature and humidity through pre-cooled evaporator and adsorption rotor, combine the filler to perform indirect evaporation and heat exchange, obtain lower temperature cooling water, and set up a meter cooler and a secondary cooling evaporator in the terminal air conditioner to achieve intelligent switching between natural cooling and mechanical refrigeration.
It reduces the system footprint, increases the cooling water temperature, reduces the demand for mechanical refrigeration, and achieves more efficient cooling effects and lower power consumption.
Smart Images
Figure CN223090867U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of data center cooling equipment, and particularly relates to a cooling system. Background Art
[0002] The data center computer room needs to be maintained within a constant temperature range. In seasons with relatively low temperatures, such as winter, natural cooling is usually mostly used for cooling. In seasons with not very high temperatures, such as spring and autumn, a mixed cooling method with natural cooling as the main and mechanical refrigeration as the auxiliary is usually adopted for cooling. In seasons with relatively high temperatures, such as summer, due to the high ambient temperature and the large amount of cooling capacity required, a mixed cooling method with mechanical refrigeration as the main and natural cooling as the auxiliary is usually adopted for cooling. However, for the mixed cooling, the cooling tower and the chiller need to be used simultaneously, and their independent installation occupies a large space. At the same time, the cooling water temperature in the cooling tower is not low enough, resulting in less cooling capacity provided by natural cooling, so the power of mechanical refrigeration needs to be increased, thus making it impossible to reduce the power consumption of the data center. Content of the Utility Model
[0003] In order to overcome the deficiencies of existing products and technologies, the utility model provides a cooling system, which combines mechanical refrigeration in the cooling tower, saves the floor area of the data center, and pre-cools and dehumidifies the external air at the same time, so that the cooling tower indirectly evaporates to obtain cooling water with a lower temperature, thereby providing natural cooling with a greater amount of cooling capacity, and thus reducing the power consumption of the data center.
[0004] The technical solution of the embodiment of the utility model is as follows:
[0005] A cooling system includes a terminal air conditioner and a cooling tower. The terminal air conditioner includes an air conditioner housing and a surface cooler and a circulation fan disposed within the air conditioner housing. The circulation fan is located above the surface cooler. The cooling tower includes a tower body and a motor, a compressor, a precooling evaporator, a condenser, an adsorption rotor, a packing, a water distributor, an exhaust fan, a water receiving tank, a cooling pump, and an air outlet guiding channel disposed within the tower body. The tower body has an external air inlet, an internal air inlet, an air outlet, and a rotating shaft through hole. The external air inlet, the internal air inlet, and the air outlet are connected end to end in pairs. The water receiving tank, the cooling pump, and the compressor are located at the bottom of the tower body. The adsorption rotor is located above the water receiving tank. The adsorption rotor has a rotating shaft, an adsorption part, and a desorption part. One end of the rotating shaft is connected to a motor fixed within the tower body, and the other end of the rotating shaft is placed within the rotating shaft through hole. The precooling evaporator is located within an evaporation space formed between the adsorption part and the external air inlet. The condenser is located within a condensation space formed between the desorption part and the internal air inlet. The compressor, the precooling evaporator, and the condenser are connected by copper pipes to form a refrigeration system. The packing is located above the water receiving tank and behind the adsorption part. The water distributor is located above the packing. One end of the air outlet guiding channel is communicated with the air outlet end of the desorption part, and the other end of the air outlet guiding channel is communicated with the air outlet. The exhaust fan is located within the air outlet guiding channel. The water inlet end of the cooling pump is communicated with the water receiving tank through a pipe, and the water outlet end of the cooling pump is communicated with one end of the surface cooler through a pipe. The other end of the surface cooler is communicated with the water distributor through a pipe.
[0006] Preferably, it further includes a filtering module disposed at the external air inlet and the internal air inlet.
[0007] Preferably, the terminal air conditioner further includes a secondary cooling evaporator disposed within the air conditioner housing. The secondary cooling evaporator is located below the surface cooler.
[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0009] By arranging the compressor, pre-cooling evaporator, and condenser in the cooling tower in the refrigeration system, the floor space of the entire system is reduced; by using the pre-cooling evaporator to pre-cool the external air, the incoming air temperature of the external air is reduced, and then the externally pre-cooled air with high humidity is adsorbed by the adsorption wheel to obtain air with low humidity and low temperature. Therefore, during the indirect evaporative heat exchange process with the packing, the evaporation amount is larger, more cooling capacity is obtained, and thus cooling water with a lower temperature is obtained; by using the cold air after heat exchange and evaporation to exchange heat with the condenser, the condensation pressure of the refrigeration system is greatly released; by setting the surface cooler and secondary cooling evaporator at the end air conditioner, the natural cooling or mechanical refrigeration mode can be switched more intelligently according to the ambient temperature. Brief Description of the Drawings
[0010] Figure 1 It is a schematic diagram of the system principle of a temperature reduction and cooling system in the present utility model;
[0011] Figure 2 It is a schematic diagram of the principle of the cooling tower in a temperature reduction and cooling system in the present utility model;
[0012] 10. End air conditioner; 11. Air conditioner housing; 12. Surface cooler; 13. Circulation fan; 14. Secondary cooling evaporator; 21. Air outlet guiding channel; 22. Compressor; 23. Pre-cooling evaporator; 24. Condenser; 25. Cooling pump; 26. Packing; 27. Water distributor; 28. Exhaust fan; 29. Water receiving tank; 30. Tower body; 31. External air inlet; 32. Internal air inlet; 33. Air outlet; 34. Rotating shaft; 35. Adsorption part; 36. Desorption part; 37. Filter module. Detailed Description of the Preferred Embodiments
[0013] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.
[0014] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.
[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.
[0016] As Figure 1 、 Figure 2 shown Figure 1 is a schematic diagram of the principle of a cooling system in the present utility model;
[0017] Figure 2 is a schematic diagram of the principle of a cooling tower in a cooling system of the present utility model; A cooling system includes a terminal air conditioner 10 and a cooling tower. The terminal air conditioner 10 includes an air conditioner housing 11 and a surface cooler 12 and a circulation fan 13 arranged in the air conditioner housing 11. The circulation fan 13 is located above the surface cooler 12. The cooling tower includes a tower body 30 and a motor (not shown), a compressor 22, a precooling evaporator 23, a condenser 24, an adsorption wheel, a packing 26, a water distributor 27, an exhaust fan 28, a water receiving tank 29, a cooling pump 25, and an air outlet guiding channel 21 arranged in the tower body. The tower body 30 has an external air inlet 31, an internal air inlet 32, an air outlet 33, and a shaft winding hole. The external air inlet 31, the internal air inlet 32, and the air outlet 33 are connected end to end in pairs. The water receiving tank 29, the cooling pump 25, and the compressor 22 are located at the bottom of the tower body 30. The adsorption wheel is located above the water receiving tank 29. The adsorption wheel has a shaft 34, an adsorption part 35, and a desorption part 36. One end of the shaft 34 is connected to a motor fixed in the tower body 30, and the other end of the shaft 34 is placed in the shaft winding hole. The precooling evaporator 23 is located in an evaporation space formed between the adsorption part 35 and the external air inlet 31. The condenser 24 is located in a condensation space formed between the desorption part 36 and the internal air inlet 32. The compressor 22, the precooling evaporator 23, and the condenser 24 are connected by copper pipes to form a refrigeration system. The packing 26 is located above the water receiving tank 29 and behind the adsorption part 36. The water distributor 27 is located above the packing 26. One end of the air outlet guiding channel 21 is communicated with the air outlet end of the desorption part 36, and the other end of the air outlet guiding channel 21 is communicated with the air outlet 33. The exhaust fan 28 is located in the air outlet guiding channel 21. The water inlet end of the cooling pump 25 is communicated with the water receiving tank 29 through a pipeline, and the water outlet end of the cooling pump 25 is communicated with one end of the surface cooler 12 through a pipeline. The other end of the surface cooler 12 is communicated with the water distributor 27 through a pipeline.
[0018] The cooling system in this article can provide cooling water at a lower temperature to cool down the data center computer room or shopping mall building. It only requires an indoor unit and an outdoor unit, and is easy to install. The indoor unit is an end - air conditioner placed indoors, and the outdoor unit is a cooling tower placed outdoors. The low - temperature cooling water is transported from the cooling tower and exchanges heat with the hot air indoors, thereby achieving the effect of reducing the indoor environmental temperature. The cooling tower in this article can achieve cooling water at a lower temperature. It has additional features of low - temperature precooling and moisture absorption compared with traditional cooling towers. By inputting low - temperature and low - humidity ambient air to undergo an isenthalpic heat - exchange process with the packing, more cooling water in the packing evaporates, thus cooling the cooling water more and obtaining cooling water at a lower temperature.
[0019] In the present utility model, an adsorption wheel is used to adsorb the moisture in the external air. The adsorption wheel consists of a rotating shaft and a wheel. The adsorption wheel is installed by placing the rotating shaft in the rotating - shaft bypass hole on the cooling - tower tower body skeleton. In the rotating - shaft bypass hole, a bearing can be used to support the rotating shaft. One end of the rotating shaft is driven by a motor installed inside the tower body. When the motor rotates, it drives the rotating shaft to rotate, and the rotating shaft drives the wheel to rotate. The wheel is divided into upper and lower halves. The lower half is the adsorption area, and the upper half is the desorption area. The adsorption area adsorbs the moisture in the external air. After adsorption, the external air becomes dry air. The adsorbed moisture rotates to the upper half for desorption through rotation. Therefore, the adsorption part and the desorption part refer to the half - part wheels in the lower and upper halves. In the cooling tower, the air - guiding air ducts passing through the adsorption part and the air - guiding air ducts passing through the desorption part are isolated. The air - guiding air ducts can be set very close to the wheel as long as they do not interfere with the rotation of the wheel. A very small amount of air volume is also allowed to flow up and down, which does not affect the adsorption of the external air. Before adsorbing the moisture in the external air, the external air needs to be precooled and cooled down. Through precooling and cooling down, the external air will increase in humidity and decrease in temperature, and thus the adsorption efficiency of the adsorption wheel will be greatly improved. The present utility model uses a precooling evaporator in the refrigeration system to cool down the external ambient air, and the corresponding condenser is placed in front of the air inlet of the desorption area of the wheel. The high - temperature hot air generated by the condenser is used to desorb the wheel containing moisture, thereby realizing the cycle of desorption and adsorption. The present utility model guides the cold air that exchanges heat with the cooling water in the packing to the internal air inlet through the internal ventilation air duct and exchanges heat with the condenser. In this way, the condensation effect of the condenser is greatly improved, and the precooling evaporation effect is further improved. The refrigeration system can operate within a smaller power range, thereby reducing the power consumption of the entire system. The hot air after heat - exchange with the condenser enters the wheel to desorb the moisture in the upper - half wheel and is guided to the air outlet through the air - outlet air - guiding channel, thus completing the entire process of preparing low - temperature cooling water.
[0020] The low-temperature cooling water is transported to the surface cooler in the terminal air conditioner through a cooling pump. The hot air in the room is sucked by a circulating fan and sent to the surface cooler to exchange heat with the surface cooler, thereby achieving cooling. Since the cooling water temperature of the surface cooler is relatively lower, its cooling effect on the entire room is more significant. The cooling water in the surface cooler is heated after heat exchange, and the heated cooling water is transported to a water distributor, and the cooling water is distributed on the packing by spraying, and an isenthalpic process of heat exchange is carried out with the low-temperature and low-humidity external air on the packing, thereby realizing the circulating cooling of the cooling water and obtaining lower-temperature cooling water.
[0021] To prevent impurities from being carried into the cooling tower by the external air, preferably, a filtering module 37 is further included, and the filtering module 37 is disposed at the external air inlet 31 and the internal air inlet 32.
[0022] By arranging a filtering module at the external air inlet and the internal air inlet, the external air is filtered and the internal air is filtered again to ensure the cleanliness of the air entering the adsorption wheel.
[0023] To meet the cooling demand in the room during high-temperature periods, preferably, the terminal air conditioner 10 further includes a secondary cooling evaporator 14 disposed in the air conditioner housing 11, and the secondary cooling evaporator 14 is located below the surface cooler 12.
[0024] By connecting the secondary cooling evaporator to the refrigeration system, the refrigeration system then needs to operate at full load power. The secondary cooling evaporator and the precooling evaporator generate different amounts of cooling capacity according to the refrigerant flow rate control.
[0025] The cooling system in this application combines natural cooling and mechanical refrigeration, and only one outdoor unit and one indoor unit are required. The indoor unit is a terminal air conditioner, which can be placed in a data center computer room or in some shopping malls to cool a closed space and achieve a comfortable environment. And only one cooling tower needs to be installed outside. The cooling tower can provide cooling water for natural cooling and absorb heat of the refrigerant for mechanical refrigeration, thereby realizing the cooling demand for indoor air. At the same time, it can also make the cooling tower operate at different power consumptions according to the ambient temperature, thus being more energy-saving.
[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0027] By arranging the compressor, pre-cooling evaporator, and condenser in the refrigeration system within the cooling tower, the floor space of the entire system is reduced; by using the pre-cooling evaporator to pre-cool the external air, the incoming air temperature of the external air is reduced, and then the externally pre-cooled air with high humidity is adsorbed by the adsorption wheel to obtain air with low humidity and low temperature. Therefore, during the indirect evaporation heat exchange process with the packing, the evaporation amount is larger, more cooling capacity is obtained, and thus cooling water with a lower temperature can be obtained; by using the cold air after heat exchange evaporation to exchange heat with the condenser, the condensation pressure of the refrigeration system is greatly released; by setting up a surface cooler and a secondary cooling evaporator at the end air conditioner, the natural cooling or mechanical refrigeration mode can be switched more intelligently according to the ambient temperature.
[0028] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope recorded in this specification.
[0029] The above embodiments only represent the preferred implementation modes of the present invention, and the description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A cooling system, characterized in that: It includes a terminal air conditioner and a cooling tower. The terminal air conditioner includes an air conditioner housing and a surface cooler and a circulating fan arranged inside the air conditioner housing. The circulating fan is located above the surface cooler. The cooling tower includes a tower body and a motor, a compressor, a precooling evaporator, a condenser, an adsorption wheel, packing, a water distributor, an exhaust fan, a water receiving tank, a cooling pump, and an air outlet guiding channel arranged inside the tower body. The tower body has an external air inlet, an internal air inlet, an air outlet, and a rotating shaft through hole. The external air inlet, the internal air inlet, and the air outlet are connected end to end in pairs. The water receiving tank, the cooling pump, and the compressor are located at the bottom of the tower body. The adsorption wheel is located above the water receiving tank. The adsorption wheel has a rotating shaft, an adsorption part, and a desorption part. One end of the rotating shaft is connected to a motor fixed inside the tower body, and the other end of the rotating shaft is placed in the rotating shaft through hole. The precooling evaporator is located in the evaporation space formed between the adsorption part and the external air inlet. The condenser is located in the condensation space formed between the desorption part and the internal air inlet. The compressor, the precooling evaporator, and the condenser are connected by copper pipes to form a refrigeration system. The packing is located above the water receiving tank and behind the adsorption part. The water distributor is located above the packing. One end of the air outlet guiding channel is communicated with the air outlet end of the desorption part, and the other end of the air outlet guiding channel is communicated with the air outlet. The exhaust fan is located in the air outlet guiding channel. The water inlet end of the cooling pump is communicated with the water receiving tank through a pipeline, the water outlet end of the cooling pump is communicated with one end of the surface cooler through a pipeline, and the other end of the surface cooler is communicated with the water distributor through a pipeline.
2. The cooling system according to claim 1, characterized in that: It further includes a filtering module, and the filtering module is arranged at the external air inlet and the internal air inlet.
3. The cooling system according to claim 2, characterized in that: The terminal air conditioner further includes a secondary cooling evaporator arranged inside the air conditioner housing, and the secondary cooling evaporator is located below the surface cooler.