CN214501515U

CN214501515U - Cooling system

Info

Publication number: CN214501515U
Application number: CN202120125555.4U
Authority: CN
Inventors: 杨立然; 张宏宇; 王大伟; 程春; 吴秋华
Original assignee: Shenzhen Iteaq Network Power Technology Co Ltd
Current assignee: Shenzhen Iteaq Network Power Technology Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-10-26
Anticipated expiration: 2031-01-18

Abstract

The utility model provides a cooling system, including evaporation cold and fluorine pump dual cycle integration air conditioning unit, big difference in temperature cooling evaporation cooling water chilling unit and cooling water circulation pipeline. The evaporative cooling and fluorine pump dual-circulation integrated air conditioning unit is provided with a first air channel and a second air channel, the first air channel is positioned above the second air channel, and the evaporative cooling and fluorine pump dual-circulation integrated air conditioning unit further comprises a first refrigeration module and a first surface air cooler which are arranged in the first air channel, and a second refrigeration module and a second surface air cooler which are arranged in the second air channel. The first surface cooler is located between the air inlet of the first air duct and the first refrigeration module. The second surface cooler is located between the air inlet of the second air duct and the second refrigeration module. The large-temperature-difference cold supply evaporative cooling water chiller is arranged outside the evaporative cooling and fluorine pump dual-cycle integrated air conditioning unit. And the cooling water circulation pipeline is sequentially communicated with the first surface cooler, the second surface cooler and the large-temperature-difference cooling evaporative cooling water chilling unit.

Description

Cooling system

Technical Field

The utility model relates to an air conditioning equipment technical field particularly, relates to a cooling system.

Background

The integrated evaporative cooling composite air conditioning unit has the advantages that the requirement on the cooling capacity reaches a certain degree, the size is limited, and the transportation and the installation are inconvenient; the conventional internal cooling type indirect evaporative cooling heat exchanger has the refrigeration capacity weakened along with the rise of the environmental wet bulb temperature, and the air outlet temperature cannot be reduced to be lower than the outdoor wet bulb temperature; the fluorine pump air conditioner can play a good energy-saving role in a low-temperature period, and a compressor needs to be started for assistance as the temperature rises, so that the energy-saving range needs to be expanded. The existing air conditioner has the problems of insufficient cooling capacity and low energy efficiency, and needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a cooling system to solve above-mentioned problem. The embodiment of the utility model provides an above-mentioned purpose is realized through following technical scheme.

The utility model provides a cooling system, including evaporating cold and fluorine pump dual cycle integration air conditioning unit, big difference in temperature cooling evaporation cooling water set and cooling water circulation pipeline, it is equipped with first wind channel and second wind channel with fluorine pump dual cycle integration air conditioning unit to evaporate cold, first wind channel is located the top in second wind channel, it still includes first refrigeration module and the first surface cooler of locating in first wind channel to evaporate cold and fluorine pump dual cycle integration air conditioning unit, and locate second refrigeration module and the second surface cooler in the second wind channel, first surface cooler is located between the air intake and the first refrigeration module in first wind channel, the second surface cooler is located between the air intake and the second refrigeration module in second wind channel. The large-temperature-difference cold supply evaporative cooling water chiller is arranged outside the evaporative cooling and fluorine pump dual-cycle integrated air conditioning unit. And the cooling water circulation pipeline is sequentially communicated with the first surface cooler, the second surface cooler and the large-temperature-difference cooling evaporative cooling water chilling unit.

In one embodiment, the large-temperature-difference cooling evaporative cooling water chilling unit comprises a cooling cabinet body, a circulating water pump, a water tank, a filler and a water distributor, wherein the water tank, the filler and the water distributor are arranged in the cooling cabinet body, the water distributor is arranged above the filler and communicated with a first surface air cooler, the water tank is arranged below the filler and communicated with a second surface air cooler, and the circulating water pump is arranged in a cooling water circulation pipeline.

In one embodiment, the cooling cabinet is provided with an air inlet and an air outlet, the large temperature difference cooling evaporative cooling water chiller further comprises a third surface air cooler, the third surface air cooler is installed in the cabinet and is arranged close to the air inlet, and the third surface air cooler is connected between the water distributor and the water tank.

In one embodiment, the large temperature difference cooling evaporative cooling water chilling unit further comprises a centrifugal fan, and the centrifugal fan is installed above the water distributor and guides air to the air outlet.

In one embodiment, the packing comprises a first packing section and a second packing section which are arranged at intervals, and the first packing section is positioned between the water distributor and the second packing section.

In one embodiment, the first refrigeration module comprises a direct evaporative cooler and a condenser, the direct evaporative cooler is located between the first surface air cooler and the condenser, and the condenser is close to the air outlet of the first air duct.

In one embodiment, the second refrigeration module comprises an evaporator, the evaporator is close to an air outlet of the second air duct, the evaporative cooling and fluorine pump dual-cycle integrated air conditioning unit further comprises a refrigerant circulation pipeline, and the evaporator and the condenser are communicated through the refrigerant circulation pipeline.

In one embodiment, the evaporative cooling and fluorine pump dual-cycle integrated air conditioning unit further comprises a compressor and a refrigeration circulating pump, wherein the compressor is installed in the first air duct, the refrigeration circulating pump is installed in the second air duct, and the refrigeration circulating pump and the compressor are communicated through a refrigerant circulating pipeline.

In one embodiment, the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit is further provided with an auxiliary air inlet, and the auxiliary air inlet is communicated with the first air duct and is positioned between the direct evaporative cooler and the condenser.

In one embodiment, the large temperature difference cooling evaporative cooling chiller further comprises a first solenoid valve and a second solenoid valve, the first solenoid valve is arranged on the cooling water circulation pipeline and connected with the first surface cooler, and the second solenoid valve is arranged on the cooling water circulation pipeline and connected with the second surface cooler.

Compared with the prior art, the embodiment of the utility model provides a cooling system, including evaporating cold and fluorine pump dual cycle integration air conditioning unit, big difference in temperature cooling evaporation cooling water set and cooling water circulation pipeline, evaporating cold and fluorine pump dual cycle integration air conditioning unit is equipped with first wind channel and second wind channel, first wind channel is located the top in second wind channel, evaporate cold and fluorine pump dual cycle integration air conditioning unit still including locating first refrigeration module and the first surface cooler in first wind channel, and locate second refrigeration module and the second surface cooler in the second wind channel, first surface cooler is located between the air intake and the first refrigeration module in first wind channel, the second surface cooler is located between the air intake and the second refrigeration module in second wind channel, big difference in temperature cooling evaporation cooling unit is arranged in evaporating cold and fluorine pump dual cycle integration air conditioning unit outside, cooling water circulation pipeline communicates first surface cooler and second surface cooler and big difference in proper order and supplies cold evaporation cooling to cool off with the cold pump dual cycle integration air conditioning unit outside, cooling water circulation pipeline communicates first surface cooler and second surface cooler and supplies the difference in big difference in proper order A water unit. The cooling water circulation pipeline is sequentially communicated with the first surface cooler, the second surface cooler and the large-temperature-difference cooling evaporative cooling water chilling unit, so that the temperature difference of the supplied water and the returned water is increased, the cooling system has large-temperature-difference evaporative cooling performance, and the cooling capacity and the energy efficiency of the cooling system are improved.

These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a cooling system according to an embodiment of the present invention.

Fig. 2 is a gas flow diagram of a fluorine pump mode of a cooling system according to an embodiment of the present invention.

Fig. 3 is a gas flow diagram of a direct evaporative cooling + fluorine pump mode of a cooling system according to an embodiment of the present invention.

Fig. 4 is an airflow diagram of the indirect-direct evaporative cooling + fluorine pump mode and the indirect-direct evaporative cooling + fluorine pump dual cycle mode of the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit provided by the embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, the cooling system 1 provided by the present invention includes an evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10, a large temperature difference cooling evaporative cooling chiller unit 30 and a cooling water circulation pipeline 50, wherein the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 and the large temperature difference cooling evaporative cooling chiller unit 30 are communicated through the cooling water circulation pipeline 50.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 comprises an air conditioning cabinet body 11, wherein the air conditioning cabinet body 11 comprises a first mounting cabinet body 112 and a second mounting cabinet body 114, and the first mounting cabinet body 112 is positioned above the second mounting cabinet body 114. The volume of the first mounting cabinet 112 and the volume of the second mounting cabinet 114 may be substantially equal.

The first mounting cabinet 112 is provided with a first air duct 1121, a first air inlet 1123 and a first air outlet 1125, and the first air duct 1121 is formed between the first air inlet 1123 and the first air outlet 1125. In this embodiment, the first mounting cabinet 112 is further provided with an auxiliary air inlet 1127, and the auxiliary air inlet 1127 is communicated with the first air duct 1121. The first air inlet 1123 is a main air inlet of the heat dissipation channel. The first air outlet 1125 is opposite to the first air inlet 1123 for discharging air introduced from the first air inlet 1123 or the auxiliary air inlet 1127. The auxiliary air inlet 1127 is located between the first air inlet 1123 and the first air outlet 1125, and may be opened at a sidewall of the first mounting cabinet 112.

The second mounting cabinet 114 is provided with a second air duct 1141, a second air inlet 1143 and a second air outlet 1145. Since the first mounting cabinet 112 is located above the second mounting cabinet 114, the first air duct 1121 is also located above the second air duct 1141. The second air inlet 1143 and the first air inlet 1123 are disposed at the same side of the air-conditioning cabinet 11, and the second air inlet 1143 is a processed air inlet, wherein the processed air may be indoor air, outdoor air, or a mixture of indoor air and outdoor air. The second air outlet 1145 and the first air outlet 1125 are disposed at the same side of the air-conditioning cabinet 11, that is, the second air inlet 1143 is opposite to the second air outlet 1145. The second outlet 1145 is for processed air.

The first air inlet 1123, the first air outlet 1125, the auxiliary air inlet 1127, the second air inlet 1143 and the second air outlet 1145 may be provided with an adjusting air valve to adjust the amount of air supplied. The opening size of each tuyere can also be set according to actual conditions.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further includes a first refrigeration module 12 and a second refrigeration module 13, wherein the first refrigeration module 12 is disposed in the first air duct 1121, and the first refrigeration module 12 is configured to adjust the temperature of air entering the first air duct 1121. The second refrigeration module 13 is disposed in the second air duct 1141, and the second refrigeration module 13 is configured to adjust a temperature of air entering the second air duct 1141.

In the embodiment, the first refrigeration module 12 includes a direct-evaporation cooler 121 and a condenser 123, and the direct-evaporation cooler 121 is configured to humidify and cool the air entering from the first air inlet 1123 in an isenthalpic manner to reduce the condensing pressure of the condenser 123. The condenser 123 is close to the air outlet of the first air duct 1121, that is, the condenser 123 is close to the first air outlet 1125, and specifically, the condenser 123 and the direct-evaporation cooler 121 are respectively located at two sides of the auxiliary air inlet 1127. In other embodiments, the first refrigeration module 12 may also include only the condenser 123, or the condenser 123 and other devices.

The condenser 123 is used to change the refrigerant flowing therethrough from a high-temperature and high-pressure gas to a low-temperature and high-pressure liquid by heat exchange.

The second refrigeration module 13 includes an evaporator 132, the evaporator 132 is close to the air outlet of the second air duct 1141, that is, the evaporator 132 is close to the second air outlet 1145, and the evaporator 132 can change the flowing refrigerant from low-temperature low-pressure liquid to low-temperature low-pressure gas through heat exchange. A drain pan with a drain hole may be disposed below the evaporator 132 to collect the condensed water generated from the evaporator 132. In other embodiments, the second refrigeration module 13 may further include other devices such as the evaporator 132 and the direct evaporative cooler 121.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further comprises a refrigerant circulation line 14, wherein the refrigerant circulation line 14 can communicate the evaporator 132 with the condenser 123 to realize the circulation of the refrigerant among the evaporator 132, the condenser 123 and the like.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further includes a compressor 15 and a refrigerant circulation pump 16, the compressor 15 is installed in the first air duct 1121, and the compressor 15 can compress the entering low-temperature low-pressure refrigerant gas and discharge the high-temperature high-pressure refrigerant gas, so as to provide power for the refrigeration cycle of the cooling system 1. The refrigerant circulation pump 16 is installed in the second air duct 1141, and the refrigerant circulation pump 16 and the compressor 15 are communicated through the refrigerant circulation line 14. The refrigerant circulation pump 16 may provide power to the liquid refrigerant to facilitate circulation of the refrigerant through the refrigerant circulation line 14. The compressor 15, the refrigerant circulation pump 16, the evaporator 132, and the condenser 123 may communicate through the refrigerant circulation line 14, and form a refrigeration cycle system, specifically, a fluorine pump refrigeration cycle system.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further includes a liquid storage 17, a throttle valve 18, and a plurality of check valves 19, and the liquid storage 17 is connected between the refrigerant circulation pump 16 and the condenser 123 through the refrigerant circulation line 14. The accumulator 17 can be used to store the condensed refrigerant liquid in the condenser 123 and maintain the appropriate amount to adjust and replenish the flow of refrigerant liquid to each piece of equipment to accommodate changing operating conditions. The throttle valve 18 is connected between the refrigerant circulation pump 16 and the evaporator 132 through the refrigerant circulation line 14, and has a function of reducing pressure and throttling. One of the check valves 19 is disposed between the compressor 15 and the condenser 123, one is disposed between the condenser 123 and the evaporator 132, and one is disposed between the evaporator 132 and the compressor 15, and the check valves 19 are disposed to allow the refrigerant to flow in a specific direction among the compressor 15, the condenser 123, and the evaporator 132, thereby preventing the refrigerant from flowing backward.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further includes a first exhaust fan 21 and a second exhaust fan 23, wherein the first exhaust fan 21 is installed in the first installation cabinet 112 and guides air to the first air outlet 1125. Specifically, the first exhaust fan 21 is opposite to the first air outlet 1125, and is used for guiding the airflow from the first air inlet 1123 or the auxiliary air inlet 1127 into the first mounting cabinet 112 and out of the first air outlet 1125 through the condenser 123. In the present embodiment, the first exhaust fan 21 is a centrifugal EC (direct current brushless motor) fan. The second exhaust fan 23 is mounted on the second mounting cabinet 114 and guides air to the second air outlet 1145. Specifically, the second exhaust fan 23 is opposite to the second air outlet 1145, and is used for guiding the airflow from the second air inlet 1143 into the second mounting cabinet 114 and out from the second air outlet 1145 through the evaporator 132. In this embodiment, the second exhaust fan 23 is also a centrifugal EC fan.

The evaporative cooling and fluorine pump dual-cycle integrated air conditioning unit 10 further comprises a plate filter 25, and the plate filter 25 is arranged at the first air inlet 1123, the second air inlet 1143 and the auxiliary air inlet 1127. In other embodiments, the filter level may be increased as needed to meet usage requirements.

The evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further comprises an access door 27, and the access door 27 is mounted on the second mounting cabinet 114. Through setting up access door 27, can make things convenient for the maintenance personal to get into in the air conditioner cabinet body 11 and overhaul work such as maintenance to inside device and equipment. In this embodiment, the number of the access doors 27 is two, and the two access doors 27 are both disposed in the second mounting cabinet 114. In other embodiments, the number of access doors 27 may also be one, three, or more. A plurality of access doors 27 may be provided to the first and second mounting

cabinets

112 and 114.

The evaporative cooling and fluorine pump dual-cycle integrated air conditioning unit 10 further comprises a first surface air cooler 100 and a second surface air cooler 200, and the first surface air cooler 100, the second surface air cooler 200 and the large temperature difference cooling evaporative cooling water chilling unit 30 can be communicated through a cooling water circulation pipeline 50.

The first surface cooler 100 is installed in the first air duct 1121, and is located between an air inlet (a first air inlet 1123) of the first air duct 1121 and the first refrigeration module 12. The first surface cooler 100 is located on a side of the direct-evaporative cooler 121 remote from the condenser 123, i.e., the direct-evaporative cooler 121 is located between the first surface cooler 100 and the condenser 123. The first surface air cooler 100 is used for cooling the air entering through the first air inlet 1123 in an equal humidity manner, so as to pre-cool the air, and prevent the superheated air from passing through the condenser 123, thereby reducing the condensing pressure of the condenser 123. The first surface cooler 100 may be communicated with the large-temperature-difference cooling evaporative cooling chiller 30 through the cooling water circulation pipeline 50, so that water generated by the first surface cooler 100 may flow to the large-temperature-difference cooling evaporative cooling chiller 30 through the cooling water circulation pipeline 50. In the present embodiment, the first surface cooler 100 is a cooling coil. In other embodiments, the first surface cooler 100 may also be a fin and coil arrangement. In this embodiment, a water pan with a drainage hole may be disposed below the first surface cooler 100, so as to collect the condensed water generated by the first surface cooler 100.

The second surface air cooler 200 is installed in the second air duct 1141 and located between an air inlet (a second air inlet 1143) of the second air duct 1141 and the second refrigeration module 13. Second surface cooler 200 is used for waiting wet cooling to the air that gets into via second air intake 1143 to the realization is to the first cooling of air, so that the follow-up carries out the secondary cooling to the air, thereby can provide the lower air conditioning of temperature, in order to satisfy the cooling demand. The second surface cooler 200 may be communicated with the large-temperature-difference cooling evaporative cooling chiller 30 through the cooling water circulation pipeline 50, so that water generated by the second surface cooler 200 may flow to the large-temperature-difference cooling evaporative cooling chiller 30 through the cooling water circulation pipeline 50. In this embodiment, the second surface cooler 200 is a cooling coil. In other embodiments, the second surface cooler 200 may also be a fin and coil arrangement. In this embodiment, a water pan with a drainage hole may be disposed below the second surface cooler 200, so as to collect water flowing out of the second surface cooler 200.

Because the water produced by the first surface air cooler 100 and the second surface air cooler 200 of the present embodiment can be communicated with the large temperature difference cooling evaporative cooling water chilling unit 30 through the cooling water circulation pipeline 50, that is, the large temperature difference cooling evaporative cooling water chilling unit 30 can sequentially cool the return water of the first surface air cooler 100 and the second surface air cooler 200 by increasing the temperature difference between the supplied water and the return water, so that the first surface air cooler 100 and the second surface air cooler 200 can pre-cool the corresponding air, the cooling system 1 has the large temperature difference evaporative cooling performance, and the cooling capacity and the energy efficiency of the cooling system 1 can be improved.

The large temperature difference cooling evaporative cooling water chiller 30 is disposed outside the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10, and may be used to provide cold water to the first surface air cooler 100 and the second surface air cooler 200, so that the first surface air cooler 100 and the second surface air cooler 200 may pre-cool the respective air. The large temperature difference cooling evaporative cooling water chilling unit 30 comprises a cooling cabinet 31, a water tank 32, a filler 33 and a water distributor 34, wherein the water tank 32, the filler 33 and the water distributor 34 are all arranged in the cooling cabinet 31, and the water distributor 34 is arranged above the filler 33. In addition, the large temperature difference cooling evaporative cooling water chilling unit 30 further comprises a water baffle 35, and the water baffle 35 is arranged above the filler 33.

The cooling cabinet 31 is provided with an air inlet 311 and an air outlet 313, the air inlet 311 is an air inlet for taking away heat of return water of the first surface air cooler 100 and the second surface air cooler 200 and preparing cold water required by the first surface air cooler 100 and the second surface air cooler 200. The air outlet 313 is opposite to the air inlet 311 and is an air outlet.

The water distributor 34 is communicated with the first surface air cooler 100, so that the return water of the first surface air cooler 100 can be sprayed to the filler 33 through the water distributor 34, and the temperature of the return water is reduced. The water distributor 34 may include a plurality of nozzles, and the plurality of nozzles may be uniformly disposed above the packing 33 to uniformly spray water to the packing 33.

The packing 33 comprises a first packing section 331 and a second packing section 333 which are arranged at intervals, and the first packing section 331 is positioned between the water distributor 34 and the second packing section 333. That is, the packing 33 in this embodiment takes a two-stage relay form. The filler 33 can humidify and cool the air entering through the air inlet 311 in an isenthalpic manner, and the filler 33 in this embodiment is in a two-stage relay form, in which the first filler section 331 can humidify and cool the air in an isenthalpic manner preliminarily, and the second filler section 333 can humidify and cool the air in a further isenthalpic manner, so that the isenthalpic humidifying and cooling effect of the air is better. In the present embodiment, the filler 33 is a material having high water absorption (hydrophilicity).

The water tank 32 may be used to store water. In this embodiment, the water tank 32 is located below the filling 33 to receive cold water generated by the filling 33. The water tank 32 may be provided with a water replenishing port and a water draining port, so that water can be replenished into the water tank 32 through the water replenishing port when the water amount is insufficient, and the water can be drained through the water draining port when sewage drainage and water draining are needed. The water tank 32 is communicated with the second surface cooler 200, and since the first surface cooler 100 and the second surface cooler 200 are communicated through the cooling water circulation line 50, the water tank 32 can simultaneously supply water to the first surface cooler 100 and the second surface cooler 200.

The large temperature difference cooling evaporative cooling chiller 30 further includes a circulating water pump 36, and the circulating water pump 36 is disposed in the cooling water circulation pipeline 50. The circulation water pump 36 may be used to pump water in the water tank 32 out of the water tank 32 and to introduce the water into the first and second surface coolers 100 and 200 through the cooling water circulation line 50, thereby forming a cooling water circulation in the large temperature difference cooling evaporative cooling chiller 30.

The large temperature difference cold-supplying evaporative cooling water chiller 30 further includes a third surface cooler 37, the third surface cooler 37 is installed in the cooling cabinet 31 and is disposed near the air inlet 311, the third surface cooler 37 is connected between the water distributor 34 and the water tank 32, so that the water tank 32 can cool the third surface cooler 37, and the return water in the third surface cooler 37 can be sprayed to the filler 33 through the water distributor 34. The third surface cooler 37 may also be configured to perform equal-humidity cooling on the air entering through the air inlet 311, so as to pre-cool the air and reduce the temperature of the entering air, thereby facilitating heat exchange between the air and the return water and generating cold water.

The large temperature difference cold supply evaporative cooling water chilling unit 30 further includes a centrifugal fan 38, and the centrifugal fan 38 is installed above the water distributor 34 and guides the wind to the air outlet 313. The centrifugal fan 38 may also be a centrifugal EC fan.

The large temperature difference cooling evaporative cooling chiller 30 further includes a first solenoid valve 39 and a second solenoid valve 310, the first solenoid valve 39 is disposed on the cooling water circulation pipeline 50 and connected to the first surface air cooler 100 to control whether the first surface air cooler 100 is communicated with the cooling water circulation pipeline 50, that is, the first solenoid valve 39 is a switch for controlling the first surface air cooler. The second solenoid valve 310 is disposed on the cooling water circulation pipe 50 and connected to the second surface air cooler 200 to control whether the second surface air cooler 200 is communicated with the cooling water circulation pipe 50, that is, the second solenoid valve 310 is a switch for controlling the second surface air cooler.

The cooling water circulation pipeline 50 is sequentially communicated with the first surface air cooler 100, the second surface air cooler 200 and the large temperature difference cooling evaporative cooling water chilling unit 30. The cooling water circulation pipeline 50 is installed inside the first and

second installation cabinets

112 and 114, and specifically, the cooling water circulation pipeline 50 may pass through the first installation cabinet 112 into the second installation cabinet 114 or pass through the second installation cabinet 114 into the first installation cabinet 112 to communicate the first and second surface coolers 100 and 200. In the present embodiment, the cooling water circulation line 50 is made of PVC (Polyvinyl chloride). In other embodiments, the cooling water circulation line 50 may be a PPR (polypropylene random, tripropylene polypropylene) material.

The utility model provides a cooling system 1 can realize indirect evaporative cooling and the organic combination of fluorine pump dual cycle integration air conditioning unit 10, mainly embodies at following different mode:

(1) fluorine pump mode: referring to fig. 2, the air adjusting valves of the large temperature difference cooling water chiller 30, the compressor 15 and the first air inlet 1123 are closed, and the air adjusting valves of the refrigerant circulating pump 16, the first exhaust fan 21, the second exhaust fan 23 and the auxiliary air inlet 1127 are opened. At this time, low-temperature air is sucked from the auxiliary air inlet 1127, is radiated by the condenser 123 to form high-temperature air, and is finally discharged by the first exhaust fan 21; the processed air enters from the second air inlet 1143, forms low temperature air after absorbing heat by the evaporator 132, and is finally sent into the room by the second exhaust fan 23. The fluorine pump mode can fully utilize a natural cold source, and does not need the operation of the compressor 15 and the large-temperature-difference cold supply evaporative cooling water chilling unit 30, so that the service lives of the compressor 15 and the large-temperature-difference cold supply evaporative cooling water chilling unit 30 can be prolonged, and the energy conservation and emission reduction are facilitated.

(2) Direct evaporative cooling + fluorine pump mode: referring to fig. 3, when the fluorine pump mode cannot meet the demand, the damper of the auxiliary air inlet port 1127 is closed, and the damper of the first air inlet port 1123, the direct evaporative cooler 121, the first exhaust fan 21, and the second exhaust fan 23 are opened. Cooling air flow is sucked from the first air inlet 1123, subjected to isenthalpic humidification and temperature reduction by the direct evaporative cooler 121, then subjected to heat dissipation by the condenser 123 to form high-temperature air, and finally discharged from the first air outlet 1125 by the first exhaust fan 21; the processed air enters through the second air inlet 1143, then is cooled after absorbing heat through the evaporator 132, and finally is sent into the room through the second exhaust fan 23. The direct evaporative cooling + fluorine pump mode reduces the temperature of the air passing through the condenser 123 by isenthalpic humidification of the cooling air stream by the direct evaporative cooler 121, and thus reduces the condensing pressure of the condenser 123.

(3) Indirect-direct evaporative cooling + fluorine pump mode: referring to fig. 4, when the direct evaporative cooling + fluorine pump mode cannot meet the demand, the large temperature difference cooling water chiller 30 is further started based on the direct evaporative cooling + fluorine pump mode. At this time, the cooling air flow is sucked from the first air inlet 1123, is subjected to equal-humidity temperature reduction by the first surface air cooler 100, is subjected to equal-enthalpy humidification temperature reduction by the direct evaporative cooler 121, is subjected to heat dissipation by the condenser 123 to form high-temperature air, and is finally discharged from the first air outlet 1125 by the first exhaust fan 21; the processed air enters from the second air inlet 1143, is pre-cooled by the second surface air cooler 200, is cooled again after absorbing heat by the evaporator 132, and is finally sent into the room by the second exhaust fan 23. In the process, the water outlet of the first surface cooler 100 and the second surface cooler 200 is sprayed to the filler 33 through the water distributor 34, and the air precooled by the third surface cooler 37 enters a rain area below the filler 33 to be subjected to direct evaporative cooling, the temperature is below the wet bulb temperature of the air at the air inlet 311, heat and mass exchange is carried out between the air and the return water in the filler 33, the heat of the return water is taken away, and the prepared cold water falls into the water tank 32 and can be supplied to the first surface cooler 100, the second surface cooler 200 and the third surface cooler 37 through the circulating water pump 36. It should be noted that the lower first surface cooler 100 or the first surface cooler 100 and the second surface cooler 200 may be selectively turned on according to the outlet air temperature. The indirect-direct evaporative cooling + fluorine pump mode can make full use of the large temperature difference for cooling the evaporative cooling chiller 30, and the temperature difference between the water supply and the water return is increased to sequentially cool the water return of the first surface air cooler 100 and the second surface air cooler 200, so that the first surface air cooler 100 and the second surface air cooler 200 can pre-cool the corresponding air, wherein the pre-cooling of the first surface air cooler 100 can prevent the overheated air from passing through the condenser 123, thereby reducing the condensing pressure of the condenser 123. Through the precooling of second surface cooler 200, later by the cooling once more through evaporimeter 132, realized the secondary cooling of air, can satisfy the indoor temperature demand to can promote cooling ability and the efficiency of cooling system 1. The mode also does not need the operation of the compressor 15, so the service life of the compressor 15 can be prolonged, and the energy conservation and emission reduction are facilitated.

(4) Indirect-direct evaporative cooling + fluorine pump dual cycle mode: when the indirect-direct evaporative cooling + fluorine pump mode still cannot satisfy the demand, the compressor 15 is turned on based on the indirect-direct evaporative cooling + fluorine pump mode, and the first surface cooler 100 and the second surface cooler 200 are turned on at the same time. Referring to fig. 4, at this time, the cooling air flow is sucked from the first air inlet 1123, is subjected to iso-humidity cooling by the first surface air cooler 100, is subjected to iso-enthalpy humidification cooling by the direct evaporative cooler 121, is subjected to heat dissipation by the condenser 123 to form high-temperature air, and is finally discharged from the first air outlet 1125 by the first exhaust fan 21; the processed air enters from the second air inlet 1143, is pre-cooled by the second surface air cooler 200, is cooled again after absorbing heat by the evaporator 132, and is finally sent into the room by the second exhaust fan 23. In the process, the water outlet of the first surface cooler 100 and the second surface cooler 200 is sprayed to the filler 33 through the water distributor 34, and the air precooled by the third surface cooler 37 enters a rain area below the filler 33 to be subjected to direct evaporative cooling, the temperature is below the wet bulb temperature of the air at the air inlet 311, heat and mass exchange is carried out between the air and the return water in the filler 33, the heat of the return water is taken away, and the prepared cold water falls into the water tank 32 and can be supplied to the first surface cooler 100, the second surface cooler 200 and the third surface cooler 37 through the circulating water pump 36. The indirect-direct evaporative cooling + fluorine pump mode can make full use of the large temperature difference for cooling the evaporative cooling chiller 30, and the temperature difference between the water supply and the water return is increased to sequentially cool the water return of the first surface air cooler 100 and the second surface air cooler 200, so that the first surface air cooler 100 and the second surface air cooler 200 can pre-cool the corresponding air, wherein the pre-cooling of the first surface air cooler 100 can prevent the overheated air from passing through the condenser 123, thereby reducing the condensing pressure of the condenser 123. Through the precooling of second surface cooler 200, later by the cooling once more through evaporimeter 132, realized the secondary cooling of air, can satisfy the indoor temperature demand to can promote cooling ability and the efficiency of cooling system 1.

The cooling system 1 of this embodiment utilizes the large-temperature-difference cooling evaporative cooling water chilling unit 30 to sequentially provide cold water for the first surface air cooler 100 and the second surface air cooler 200, so that the first surface air cooler 100 and the second surface air cooler 200 can pre-cool the corresponding air, and the cooling capacity and the energy efficiency of the cooling system 1 can be improved. That is, the cooling system 1 of the embodiment adopts a multi-stage indirect surface cooling composite form, and increases the temperature difference between the supply water and the return water, so that the energy is more efficiently utilized in a cascade manner. In addition, the cooling system 1 can organically combine the external cooling type indirect evaporative cooling, the internal cooling type direct evaporative cooling and the fluorine pump double circulation system, and realizes the combination of the large temperature difference evaporative cooling of the cooling system 1 and the fluorine pump air conditioner, so that the refrigerating capacity of the system can be improved, and the refrigerating capacity range can be enlarged. The utility model provides a cold supply system 1 can switch to different mode according to operating modes such as different places, period to provide the feasibility selection scheme of optimization, thereby realize energy-conservation throughout the year, and can make full use of nature cold source, prolong nature cold time, shorten compressor 15 and move long, thereby prolong compressor 15's life, the energy saving and emission reduction who does benefit to.

To sum up, the cooling system 1 provided by the embodiment of the present invention includes an evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10, a large temperature difference cooling evaporative cooling chiller unit 30 and a cooling water circulation pipeline 50, the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 is provided with a first air duct 1121 and a second air duct 1141, the first air duct 1121 is located above the second air duct 1141, the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10 further includes a first refrigeration module 12 and a first surface air cooler 100 which are arranged in the first air duct 1121, and a second refrigeration module 13 and a second surface air cooler 200 which are arranged in the second air duct 1141, the first surface air cooler 100 is located between an air inlet of the first air duct 1121 and the first refrigeration module 12, the second surface air cooler 200 is located between an air inlet of the second air duct 1141 and the second refrigeration module 13, the large temperature difference evaporative cooling chiller unit 30 is disposed outside the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit 10, the cooling water circulation pipeline 50 is sequentially communicated with the first surface air cooler 100, the second surface air cooler 200 and the large temperature difference cooling evaporative cooling water chilling unit 30. The first surface air cooler 100, the second surface air cooler 200 and the large-temperature-difference cooling evaporative cooling water chilling unit 30 are sequentially communicated through the cooling water circulation pipeline 50, the water supply and return temperature difference is increased, the cooling system 1 has large-temperature-difference evaporative cooling performance, and the cooling capacity and the energy efficiency of the cooling system 1 are improved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A cooling system, comprising:

the evaporative cooling and fluorine pump double-circulation integrated air conditioning unit is provided with a first air duct and a second air duct, the first air duct is positioned above the second air duct, the evaporative cooling and fluorine pump double-circulation integrated air conditioning unit further comprises a first refrigeration module and a first surface cooler which are arranged in the first air duct, and a second refrigeration module and a second surface cooler which are arranged in the second air duct, the first surface cooler is positioned between an air inlet of the first air duct and the first refrigeration module, and the second surface cooler is positioned between an air inlet of the second air duct and the second refrigeration module;

the large temperature difference cooling evaporative cooling water chilling unit is arranged outside the evaporative cooling and fluorine pump dual-circulation integrated air conditioning unit; and

and the cooling water circulation pipeline is sequentially communicated with the first surface cooler, the second surface cooler and the large-temperature-difference cooling evaporative cooling water chilling unit.

2. The cooling system according to claim 1, wherein the large-temperature-difference evaporative cooling chiller comprises a cooling cabinet, a circulating water pump, and a water tank, a filler and a water distributor which are arranged in the cooling cabinet, the water distributor is arranged above the filler and is communicated with the first surface air cooler, the water tank is arranged below the filler and is communicated with the second surface air cooler, and the circulating water pump is arranged in the cooling water circulation pipeline.

3. The cooling system according to claim 2, wherein the cooling cabinet is provided with an air inlet and an air outlet, the large temperature difference cooling evaporative cooling chiller further comprises a third surface cooler, the third surface cooler is installed in the cabinet and is arranged close to the air inlet, and the third surface cooler is connected between the water distributor and the water tank.

4. The cooling system of claim 3, wherein the large temperature difference evaporative cooling chiller further comprises a centrifugal fan, the centrifugal fan being mounted above the water distributor and guiding air to the air outlet.

5. The cooling system of claim 2, wherein the packing includes first and second packing sections spaced apart, the first packing section being positioned between the water distributor and the second packing section.

6. A cold supply system according to any one of claims 1-5, wherein the first refrigeration module comprises a direct evaporative cooler and a condenser, the direct evaporative cooler is located between the first surface air cooler and the condenser, and the condenser is located near an air outlet of the first air duct.

7. The cooling system according to claim 6, wherein the second refrigeration module includes an evaporator, the evaporator is close to the air outlet of the second air duct, the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit further includes a refrigerant circulation line, and the evaporator and the condenser are communicated through the refrigerant circulation line.

8. The cooling system according to claim 7, wherein the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit further comprises a compressor and a refrigeration circulating pump, the compressor is installed in the first air duct, the refrigeration circulating pump is installed in the second air duct, and the refrigeration circulating pump and the compressor are communicated through the refrigerant circulating pipeline.

9. The cooling system according to claim 8, wherein the evaporative cooling and fluorine pump dual cycle integrated air conditioning unit further comprises an auxiliary air inlet, the auxiliary air inlet is communicated with the first air duct and is located between the direct evaporative cooler and the condenser.

10. A cold supply system according to any one of claims 1-5, wherein the large temperature difference cold supply evaporative cooling chiller further comprises a first solenoid valve and a second solenoid valve, the first solenoid valve is disposed on the cooling water circulation pipeline and connected to the first surface cooler, and the second solenoid valve is disposed on the cooling water circulation pipeline and connected to the second surface cooler.