CN114576738A

CN114576738A - Spray cooling system and method for multi-split air conditioner outdoor unit by using air-cooled heat pump as cold source

Info

Publication number: CN114576738A
Application number: CN202210266712.2A
Authority: CN
Inventors: 杨凯; 王瑜; 康娜
Original assignee: Nanjing Tech University
Current assignee: Nanjing Tech University
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-06-03

Abstract

The invention discloses a spray cooling system and a spray cooling method for a multi-split air conditioner outdoor unit by using an air-cooled heat pump as a cold source, belongs to the technical field of air conditioner heat dissipation, and particularly relates to a cooling device for the air conditioner outdoor unit. The multi-split air conditioner outdoor unit mainly comprises an air-cooled heat pump system, a first spray cooling system and a second spray cooling system, and solves the problem that the multi-split air conditioner outdoor unit is too long in operation time and too high in temperature. The invention applies the air-cooled heat pump technology to supply cold to two sets of spray cooling systems by taking air as a cold source, and each set of spray cooling system cools the surface of an outdoor unit by covering a comprehensive spray space. The invention uses atomized liquid drops sprayed by a plurality of rows of nozzles to cool the outdoor unit of the multi-split air conditioner, and the refrigeration efficiency is high. The stop valve on the pipeline is adjusted, so that the cooling requirements of different positions of the outdoor unit can be met.

Description

Spray cooling system and method for multi-split air conditioner outdoor unit by using air-cooled heat pump as cold source

Technical Field

The invention relates to a spray cooling system and a spray cooling method for a multi-split air conditioning outdoor unit by using an air-cooled heat pump as a cold source, belongs to the technical field of air conditioning heat dissipation, and particularly relates to a cooling device for the air conditioning outdoor unit.

Background

The outdoor unit of the multi-split air conditioner generates a large amount of heat during operation, and the heat can be discharged through a radiator arranged in the outdoor unit. In summer, the temperature of the outdoor unit of the multi-split air conditioner is overhigh and can reach 40 ℃ at most due to the direct high temperature of the sun to the outdoor unit, so that the refrigerating efficiency and the service life of the multi-split air conditioner are influenced. Therefore, how to solve the problem of high-temperature overheating of the air-conditioning outdoor unit has important significance.

Some patents have proposed methods for cooling an air conditioning outdoor unit, and patent No. cn201921090868.x proposes a spray device for an air conditioning outdoor unit, which uses a spray head to cool the outdoor unit, and realizes the recycling of cold water by arranging a water collection tank below the outdoor unit. No cold source is arranged in the scheme, so that the continuous cooling effect on the outdoor unit of the air conditioner is difficult to ensure. Patent CN202022550082.0 proposes an air conditioner outdoor unit cooling device and an air conditioner, which is mainly characterized in that a cold source of the air conditioner outdoor unit is from a cooling tower, the cooling tower cools a refrigerant, and then the refrigerant is in direct contact with an outdoor unit to cool. However, in the conventional liquid cooling method, the outdoor unit is immersed in the cooling liquid to dissipate heat, and due to the factors of complex system design, low reliability, low refrigeration efficiency and the like caused by sealing problems, the heat dissipation requirement of the multi-split air conditioner cannot be met. In addition, the multi-split air conditioning system does not use a cooling tower, and the cooling system using the cooling tower as a cold source cannot be applied to the condition of cooling the outdoor unit of the multi-split air conditioner.

In consideration of the characteristics of refrigeration efficiency, applicability and the like, the invention designs a spray cooling system of an outdoor unit of a multi-split air conditioner, which uses an air-cooled heat pump as a cold source. The system uses the air-cooled heat pump system as a cold source, the cold source can supply cold to two sets of spray cooling systems, the spray space of each set of spray cooling system is provided with three rows of nozzles to cool the outdoor units in all aspects from the left direction, the upper direction and the right direction of the outdoor units, and the bottom of each outdoor unit is provided with a bottom pool for recycling water. According to the difference of the cooling capacity required by the outdoor unit, the system can also adjust the spraying capacity of each set of spray cooling system through the adjusting pipeline stop valve, thereby realizing the adjustment of the cooling capacity required by the cooling of the outdoor unit.

Disclosure of Invention

The invention aims to provide a spray cooling system of a multi-split air conditioner outdoor unit with an air-cooled heat pump as a cold source, which comprises an air-cooled heat pump system, a first spray cooling system and a second spray cooling system;

the air-cooled heat pump system comprises a compressor 3-1, a condenser 3-2, a throttle valve 3-3, a refrigerant circulating pump 3-4 and an evaporator 3-5;

the evaporator 3-5 is provided with a refrigerant inlet, a refrigerant outlet, a spraying medium inlet and a spraying medium outlet;

the outlet of the compressor 3-1 is connected with the inlet of the condenser 3-2, the outlet of the condenser 3-2 is connected with the inlet of the throttle valve 3-3, the outlet of the throttle valve 3-3 is connected with the inlet of the refrigerant circulating pump 3-4, the outlet of the refrigerant circulating pump 3-4 is connected with the refrigerant inlet of the evaporator 3-5, and the refrigerant outlet of the evaporator 3-5 is connected with the inlet of the compressor 3-1;

the first spray cooling system comprises a first bottom pool 1-1, a first spray medium circulating pump 1-2, a first water tank 1-3, an evaporator 3-5, a first flow regulating valve 1-4, a first stop valve 1-5, a first flow meter 1-6, a second stop valve 1-7, a third stop valve 1-8, a first row of nozzles 1-9, a fourth stop valve 1-10, a second row of nozzles 1-11, a fifth stop valve 1-12, a third row of nozzles 1-13, a sixth stop valve 1-14, a seventh stop valve 1-15, a fourth row of nozzles 1-16, an eighth stop valve 1-17, a fifth row of nozzles 1-18, a ninth stop valve 1-19, a sixth row of nozzles 1-20, a tenth stop valve 1-21, an eleventh stop valve 1-22, a, A seventh row of nozzles 1-23, a twelfth stop valve 1-24, an eighth row of nozzles 1-25, a thirteenth stop valve 1-26, a ninth row of nozzles 1-27, a first outdoor unit 1-28, and a first spray space 1-29;

the first spraying space 1-29 comprises a first row of nozzles 1-9, a second row of nozzles 1-11, a third row of nozzles 1-13, a fourth row of nozzles 1-16, a fifth row of nozzles 1-18, a sixth row of nozzles 1-20, a seventh row of nozzles 1-23, an eighth row of nozzles 1-25 and a ninth row of nozzles 1-27, and each row comprises four nozzles;

an outlet of the first bottom pool 1-1 is connected with an inlet of a first spraying medium circulating pump 1-2, an outlet of the first spraying medium circulating pump 1-2 is connected with an inlet of a first water tank 1-3, the bottom of the first water tank 1-3 is connected with a tap water pipe network, an outlet of the first water tank 1-3 is connected with a spraying medium inlet of an evaporator 3-5, a spraying medium outlet of the evaporator 3-5 is connected with an inlet of a first flow regulating valve 1-4, an outlet of the first flow regulating valve 1-4 is connected with an inlet of a first stop valve 1-5, an outlet of the first stop valve 1-5 is connected with an inlet of a first flow meter 1-6, an outlet of the first flow meter 1-6 is connected with inlets of a second stop valve 1-7, a sixth stop valve 1-14 and a tenth stop valve 1-21, the outlet of the second stop valve 1-7 is connected with the inlet of the third stop valve 1-8, the fourth stop valve 1-10 and the fifth stop valve 1-12, the outlet of the sixth stop valve 1-14 is connected with the inlet of the seventh stop valve 1-15, the eighth stop valve 1-17 and the ninth stop valve 1-19, the outlet of the tenth stop valve 1-21 is connected with the inlet of the eleventh stop valve 1-22, the twelfth stop valve 1-24 and the thirteenth stop valve 1-26, the outlet of the third stop valve 1-8 is connected with the inlet of the first row of nozzles 1-9, the outlet of the fourth stop valve 1-10 is connected with the inlet of the second row of nozzles 1-11, the outlet of the fifth stop valve 1-12 is connected with the inlet of the third row of nozzles 1-13, the outlet of the seventh stop valve 1-15 is connected with the inlet of the fourth row of nozzles 1-16, the outlets of the eighth stop valves 1-17 are connected with the inlets of the fifth row of nozzles 1-18, the outlets of the ninth stop valves 1-19 are connected with the inlets of the sixth row of nozzles 1-20, the outlets of the eleventh stop valves 1-22 are connected with the inlets of the seventh row of nozzles 1-23, the outlets of the twelfth stop valves 1-24 are connected with the inlets of the eighth row of nozzles 1-25, the outlets of the thirteenth stop valves 1-26 are connected with the inlets of the ninth row of nozzles 1-27, the outlets of the first row of nozzles 1-9, the second row of nozzles 1-11 and the third row of nozzles 1-13 are positioned at the right side of the first outdoor unit 1-28, the outlets of the fourth row of nozzles 1-16, the fifth row of nozzles 1-18 and the sixth row of nozzles 1-20 are positioned above the first outdoor unit 1-28, the outlets of the seventh row of nozzles 1-23, the eighth row of nozzles 1-25 and the ninth row of nozzles 1-27 are positioned on the left side of the first outdoor unit 1-28, and the outlet of the first spray space 1-29 is positioned above the first bottom tank 1-1;

the second spray cooling system comprises a second bottom pool 2-1, a second spray medium circulating pump 2-2, a second water tank 2-3, an evaporator 3-5, a second flow regulating valve 2-4, a fourteenth stop valve 2-5, a second flow meter 2-6, a fifteenth stop valve 2-7, a sixteenth stop valve 2-8, a tenth row of nozzles 2-9, a seventeenth stop valve 2-10, an eleventh row of nozzles 2-11, an eighteenth stop valve 2-12, a twelfth row of nozzles 2-13, a nineteenth stop valve 2-14, a twentieth stop valve 2-15, a thirteenth row of nozzles 2-16, a twenty-first stop valve 2-17, a fourteenth row of nozzles 2-18, a twenty-second stop valve 2-19, and a fifteenth row of nozzles 2-20, A twenty-third stop valve 2-21, a twenty-fourth stop valve 2-22, a sixteenth row of nozzles 2-23, a twenty-fifth stop valve 2-24, a seventeenth row of nozzles 2-25, a twenty-sixth stop valve 2-26, an eighteenth row of nozzles 2-27, a second outdoor unit 2-28, and a second spray space 2-29;

wherein, the second spraying space 2-29 comprises a tenth row of nozzles 2-9, an eleventh row of nozzles 2-11, a twelfth row of nozzles 2-13, a thirteenth row of nozzles 2-16, a fourteenth row of nozzles 2-18, a fifteenth row of nozzles 2-20, a sixteenth row of nozzles 2-23, a seventeenth row of nozzles 2-25 and an eighteenth row of nozzles 2-27, and each row comprises four nozzles;

an outlet of the second bottom pool 2-1 is connected with an inlet of a second spraying medium circulating pump 2-2, an outlet of the second spraying medium circulating pump 2-2 is connected with an inlet of a second water tank 2-3, the bottom of the second water tank 2-3 is connected with a tap water pipe network, an outlet of the second water tank 2-3 is connected with a spraying medium inlet of an evaporator 3-5, a spraying medium outlet of the evaporator 3-5 is connected with an inlet of a second flow regulating valve 2-4, an outlet of the second flow regulating valve 2-4 is connected with an inlet of a fourteenth stop valve 2-5, an outlet of the fourteenth stop valve 2-5 is connected with an inlet of a second flow meter 2-6, an outlet of the second flow meter 2-6 is connected with inlets of a fifteenth stop valve 2-7, a ninth stop valve 2-14 and a twenty-third stop valve 2-21, the outlet of the fifteenth stop valve 2-7 is connected with the inlets of the sixteenth stop valve 2-8, the seventeenth stop valve 2-10 and the eighteenth stop valve 2-12, the outlet of the nineteenth stop valve 2-14 is connected with the inlets of the twentieth stop valve 2-15, the twenty-first stop valve 2-17 and the twenty-second stop valve 2-19, the outlet of the twenty-third stop valve 2-21 is connected with the inlets of the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24 and the twenty-sixth stop valve 2-26, the outlet of the sixteenth stop valve 2-8 is connected with the inlet of the tenth row of nozzles 2-9, the outlet of the seventeenth stop valve 2-10 is connected with the inlet of the eleventh row of nozzles 2-11, the outlet of the eighteenth stop valve 2-12 is connected with the inlet of the twelfth row of nozzles 2-13, outlets of the twentieth stop valve 2-15 are connected with inlets of the thirteenth row of nozzles 2-16, outlets of the twenty-first stop valve 2-17 are connected with inlets of the fourteenth row of nozzles 2-18, outlets of the twenty-second stop valve 2-19 are connected with inlets of the fifteenth row of nozzles 2-20, outlets of the twenty-fourth stop valve 2-22 are connected with inlets of the sixteenth row of nozzles 2-23, outlets of the twenty-fifth stop valve 2-24 are connected with inlets of the seventeenth row of nozzles 2-25, outlets of the twenty-sixth stop valve 2-26 are connected with inlets of the eighteenth row of nozzles 2-27, outlets of the tenth row of nozzles 2-9, the eleventh row of nozzles 2-11 and the twelfth row of nozzles 2-13 are positioned on the left side of the second outdoor unit 2-28, outlets of the thirteenth row of nozzles 2-16, Outlets of the fourteenth row of nozzles 2-18 and the fifteenth row of nozzles 2-20 are positioned above the second outdoor unit 2-28, outlets of the sixteenth row of nozzles 2-23, the seventeenth row of nozzles 2-25 and the eighteenth row of nozzles 2-27 are positioned on the right side of the second outdoor unit 2-28, and outlets of the second spray spaces 2-29 are positioned above the second bottom tank 2-1.

The first row of nozzles 1-9, the second row of nozzles 1-11, the third row of nozzles 1-13, the fourth row of nozzles 1-16, the fifth row of nozzles 1-18, the sixth row of nozzles 1-20, the seventh row of nozzles 1-23, the eighth row of nozzles 1-25, the ninth row of nozzles 1-27 and the first outdoor unit 1-28 are all arranged in the first spraying space 1-29;

and the tenth row of nozzles 2-9, the eleventh row of nozzles 2-11, the twelfth row of nozzles 2-13, the thirteenth row of nozzles 2-16, the fourteenth row of nozzles 2-18, the fifteenth row of nozzles 2-20, the sixteenth row of nozzles 2-23, the seventeenth row of nozzles 2-25, the eighteenth row of nozzles 2-27 and the second outdoor unit 2-28 are all arranged in the second spraying space 2-29.

The first spraying space 1-29, the second spraying space 2-29, the first bottom pool 1-1, the second bottom pool 2-1, the first water tank 1-3 and the second water tank 2-3 are made of stainless steel;

hollow round holes are distributed in the bottoms of the first spraying space 1-29 and the second spraying space 2-29;

the first water tank 1-3 and the second water tank 2-3 are replenished with water at any time through a tap water pipe network;

the spray circulation medium is water.

The condenser 3-2 is an inserted sheet type microchannel air-cooled heat exchanger, and a cold source of the inserted sheet type microchannel air-cooled heat exchanger comes from air;

the evaporators 3-5 are plate heat exchangers.

The refrigerant of the air-cooled heat pump system is R22, R134a or R407C.

The first row of nozzles 1-9, the second row of nozzles 1-11, the third row of nozzles 1-13, the fourth row of nozzles 1-16, the fifth row of nozzles 1-18, the sixth row of nozzles 1-20, the seventh row of nozzles 1-23, the eighth row of nozzles 1-25, the ninth row of nozzles 1-27, the tenth row of nozzles 2-9, the eleventh row of nozzles 2-11, the twelfth row of nozzles 2-13, the thirteenth row of nozzles 2-16, the fourteenth row of nozzles 2-18, the fifteenth row of nozzles 2-20, the sixteenth row of nozzles 2-23, the seventeenth row of nozzles 2-25 and the eighteenth row of nozzles 2-27 are standard fan-shaped solid cone nozzles made of 316 stainless steel.

The first spray cooling system spray medium circulation process comprises the following steps: opening a first spraying medium circulating pump 1-2, a first stop valve 1-5, a second stop valve 1-7, a third stop valve 1-8, a fourth stop valve 1-10, a fifth stop valve 1-12, a sixth stop valve 1-14, a seventh stop valve 1-15, an eighth stop valve 1-17, a ninth stop valve 1-19, a tenth stop valve 1-21, an eleventh stop valve 1-22, a twelfth stop valve 1-24 and a thirteenth stop valve 1-26, wherein water in a first water tank 1-3 enters an evaporator 3-5 for cooling through an evaporator spraying medium inlet, cold water enters a second stop valve 1-7, a sixth stop valve 1-14 and a tenth stop valve 1-21 through an evaporator spraying medium outlet, and cold water flowing out of the second stop valve 1-7 passes through the third stop valve 1-8, The fourth stop valve 1-10 and the fifth stop valve 1-12 respectively flow to the first row nozzle 1-9, the second row nozzle 1-11 and the third row nozzle 1-13, the cold water flowing out of the sixth stop valve 1-14 respectively flows to the fourth row nozzle 1-16, the fifth row nozzle 1-18 and the sixth row nozzle 1-20 through the seventh stop valve 1-15, the eighth stop valve 1-17 and the ninth stop valve 1-19 respectively, the cold water flowing out of the tenth stop valve 1-21 respectively flows to the seventh row nozzle 1-23, the eighth row nozzle 1-25 and the ninth row nozzle 1-27 through the eleventh stop valve 1-22, the twelfth stop valve 1-24 and the thirteenth stop valve 1-26 respectively, and flows to the seventh row nozzle 1-23, the eighth row nozzle 1-25 and the ninth row nozzle 1-27 from the first row nozzle 1-9 and the second row nozzle 1-11, After cold water flowing out of a third row of nozzles 1-13, a fourth row of nozzles 1-16, a fifth row of nozzles 1-18, a sixth row of nozzles 1-20, a seventh row of nozzles 1-23, an eighth row of nozzles 1-25 and a ninth row of nozzles 1-27 is cooled by a first outdoor unit 1-28, the cold water enters a first bottom tank 1-1 below through a hollow circular hole at the bottom of a first spraying space 1-29, and water in the first bottom tank 1-1 is pumped to a first water tank 1-3 by a first spraying medium circulating pump 1-2 to complete circulation;

the second spray cooling system spray medium circulation process comprises the following steps: opening a second spraying medium circulating pump 2-2, a fourteenth stop valve 2-5, a fifteenth stop valve 2-7, a sixteenth stop valve 2-8, a seventeenth stop valve 2-10, an eighteenth stop valve 2-12, a nineteenth stop valve 2-14, a twentieth stop valve 2-15, a twenty-first stop valve 2-17, a twenty-second stop valve 2-19, a twenty-third stop valve 2-21, a twenty-fourth stop valve 2-22, a twenty-fifth stop valve 2-24 and a twenty-sixth stop valve 2-26, cooling water in a second water tank 2-3 enters an evaporator 3-5 through an evaporator spraying medium inlet, cold water enters a fifteenth stop valve 2-7, a nineteenth stop valve 2-14 and a twenty-third stop valve 2-21 through an evaporator spraying medium outlet, cold water flowing out of the fifteenth stop valve 2-7 flows to the tenth row nozzle 2-9, the eleventh row nozzle 2-11 and the twelfth row nozzle 2-13 through the sixteenth stop valve 2-8, the seventeenth stop valve 2-10 and the eighteenth stop valve 2-12 respectively, cold water flowing out of the nineteenth stop valve 2-14 flows to the thirteenth row nozzle 2-16, the fourteenth row nozzle 2-18 and the fifteenth row nozzle 2-20 through the twentieth stop valve 2-15, the twenty-first stop valve 2-17 and the twenty-second stop valve 2-19 respectively, and cold water flowing out of the twenty-third stop valve 2-21 flows to the sixteenth row nozzle 2-23 through the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24 and the twenty-sixth stop valve 2-26 respectively, Seventeenth row of nozzles 2-25 and eighteenth row of nozzles 2-27, wherein cold water flowing out of the tenth row of nozzles 2-9, the eleventh row of nozzles 2-11, the twelfth row of nozzles 2-13, the thirteenth row of nozzles 2-16, the fourteenth row of nozzles 2-18, the fifteenth row of nozzles 2-20, the sixteenth row of nozzles 2-23, the seventeenth row of nozzles 2-25 and the eighteenth row of nozzles 2-27 cools the second outdoor unit 2-28, then enters the first bottom tank 2-1 below through a hollow circular hole at the bottom of the second spraying space 2-29, and water in the second bottom tank 2-1 is pumped to the second water tank 2-3 by the second spraying medium circulating pump 2-2 to complete circulation;

the refrigerant circulating process: the refrigerant circulating pump 3-4 is started, low-pressure liquid refrigerant enters the evaporator 3-5 through the refrigerant inlet to be evaporated into refrigerant steam, the refrigerant steam is discharged through the refrigerant outlet of the evaporator 3-5 and enters the compressor 3-1 to be compressed into high-pressure refrigerant steam, the high-pressure refrigerant steam is discharged from the compressor 3-1 and then enters the condenser 3-2, the high-pressure refrigerant steam is condensed into high-pressure liquid refrigerant by air through the forced heat exchange of the fan, the high-pressure liquid refrigerant is discharged through the condenser 3-2 and then enters the throttle valve 3-3 to be decompressed into low-pressure liquid refrigerant, and the low-pressure liquid refrigerant enters the evaporator 3-5 through the refrigerant circulating pump 3-4 to complete circulation.

When the first spray cooling system and the second spray cooling system are used simultaneously, a first spray medium circulating pump 1-2, a second spray medium circulating pump 2-2, a first stop valve 1-5, a second stop valve 1-7, a third stop valve 1-8, a fourth stop valve 1-10, a fifth stop valve 1-12, a sixth stop valve 1-14, a seventh stop valve 1-15, an eighth stop valve 1-17, a ninth stop valve 1-19, a tenth stop valve 1-21, an eleventh stop valve 1-22, a twelfth stop valve 1-24, a thirteenth stop valve 1-26, a fourteenth stop valve 2-5, a fifteenth stop valve 2-7, a sixteenth stop valve 2-8, a seventeenth stop valve 2-10, an eighteenth stop valve 2-12, a sixteenth stop valve 2-12, a, 2-14 parts of a nineteenth stop valve, 2-15 parts of a twentieth stop valve, 2-17 parts of a twenty-first stop valve, 2-19 parts of a twenty-second stop valve, 2-21 parts of a twenty-third stop valve, 2-22 parts of a twenty-fourth stop valve, 2-24 parts of a twenty-fifth stop valve and 2-26 parts of a twenty-sixth stop valve, wherein the system simultaneously carries out spray cooling on the first outdoor unit 1-28 and the second outdoor unit 2-28;

when the first spray cooling system is used independently, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the third stop valve 1-8, the fourth stop valve 1-10, the fifth stop valve 1-12, the sixth stop valve 1-14, the seventh stop valve 1-15, the eighth stop valve 1-17, the ninth stop valve 1-19, the tenth stop valve 1-21, the eleventh stop valve 1-22, the twelfth stop valve 1-24, the thirteenth stop valve 1-26 are opened, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the eighteenth stop valve 2-12, the nineteenth stop valve 2-14 are closed, The system comprises a twentieth stop valve 2-15, a twenty-first stop valve 2-17, a twenty-second stop valve 2-19, a twenty-third stop valve 2-21, a twenty-fourth stop valve 2-22, a twenty-fifth stop valve 2-24 and a twenty-sixth stop valve 2-26, and the system independently performs spray cooling on the first outdoor unit 1-28;

when the second spray cooling system is used independently, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the eighteenth stop valve 2-12, the nineteenth stop valve 2-14, the twentieth stop valve 2-15, the twenty-first stop valve 2-17, the twenty-second stop valve 2-19, the twenty-third stop valve 2-21, the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24, the twenty-sixth stop valve 2-26 are opened, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the third stop valve 1-8, the fourth stop valve 1-10, the fifth stop valve 1-12 are closed, The system comprises a sixth stop valve 1-14, a seventh stop valve 1-15, an eighth stop valve 1-17, a ninth stop valve 1-19, a tenth stop valve 1-21, an eleventh stop valve 1-22, a twelfth stop valve 1-24 and a thirteenth stop valve 1-26, and the system independently performs spray cooling on the second outdoor unit 2-28.

When the first spray cooling system is used alone and only partial spray cooling is carried out on the right side of the first outdoor unit 1-28, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the third stop valve 1-8, the fourth stop valve 1-10 and the fifth stop valve 1-12 are opened, the sixth stop valve 1-14, the seventh stop valve 1-15, the eighth stop valve 1-17, the ninth stop valve 1-19, the tenth stop valve 1-21, the eleventh stop valve 1-22, the twelfth stop valve 1-24, the thirteenth stop valve 1-26, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8 and the seventeenth stop valve 2-10 are closed, 2-12 parts of an eighteenth stop valve, 2-14 parts of a nineteenth stop valve, 2-15 parts of a twentieth stop valve, 2-17 parts of a twenty-first stop valve, 2-19 parts of a twenty-second stop valve, 2-21 parts of a twenty-third stop valve, 2-22 parts of a twenty-fourth stop valve, 2-24 parts of a twenty-fifth stop valve and 2-26 parts of a twenty-sixth stop valve;

when the first spray cooling system is used alone and only the upper side of the first outdoor unit 1-28 is subjected to local spray cooling, the first spray medium circulating pump 1-2, the first stop valve 1-5, the sixth stop valve 1-14, the seventh stop valve 1-15, the eighth stop valve 1-17, the ninth stop valve 1-19 are opened, the second stop valve 1-7, the third stop valve 1-8, the fourth stop valve 1-10, the fifth stop valve 1-12, the tenth stop valve 1-21, the eleventh stop valve 1-22, the twelfth stop valve 1-24, the thirteenth stop valve 1-26, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the fourteenth stop valve 2-10, the fifth stop valve 2-7, the thirteenth stop valve 1-8, the eleventh stop valve 1-19, the eighth stop valve, the seventh stop valve, the eighth stop valve, the sixth stop valve, the seventh stop valve, the sixth, 2-12 parts of an eighteenth stop valve, 2-14 parts of a nineteenth stop valve, 2-15 parts of a twentieth stop valve, 2-17 parts of a twenty-first stop valve, 2-19 parts of a twenty-second stop valve, 2-21 parts of a twenty-third stop valve, 2-22 parts of a twenty-fourth stop valve, 2-24 parts of a twenty-fifth stop valve and 2-26 parts of a twenty-sixth stop valve;

when the first spray cooling system is used alone and only the left side of the first outdoor unit 1-28 is subjected to local spray cooling, the first spray medium circulating pump 1-2, the first stop valve 1-5, the tenth stop valve 1-21, the eleventh stop valve 1-22, the twelfth stop valve 1-24 and the thirteenth stop valve 1-26 are opened, the second stop valve 1-7, the third stop valve 1-8, the fourth stop valve 1-10, the fifth stop valve 1-12, the sixth stop valve 1-14, the seventh stop valve 1-15, the eighth stop valve 1-17, the ninth stop valve 1-19, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8 and the seventeenth stop valve 2-10 are closed, The stop valve comprises a twenty-first stop valve 2-12, a twenty-second stop valve 2-19, a twenty-third stop valve 2-21, a twenty-fourth stop valve 2-22, a twenty-fifth stop valve 2-24 and a twenty-sixth stop valve 2-26.

When the second spray cooling system is used alone and only the left side of the second outdoor unit 2-28 is subjected to local spray cooling, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the eighteenth stop valve 2-12 are opened, the nineteenth stop valve 2-14, the twentieth stop valve 2-15, the twenty-first stop valve 2-17, the twenty-second stop valve 2-19, the twenty-third stop valve 2-21, the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24, the twenty-sixth stop valve 2-26, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the second spray medium circulating pump 1-2, 1-8 parts of a third stop valve, 1-10 parts of a fourth stop valve, 1-12 parts of a fifth stop valve, 1-14 parts of a sixth stop valve, 1-15 parts of a seventh stop valve, 1-17 parts of an eighth stop valve, 1-19 parts of a ninth stop valve, 1-21 parts of a tenth stop valve, 1-22 parts of an eleventh stop valve, 1-24 parts of a twelfth stop valve and 1-26 parts of a thirteenth stop valve;

when the second spray cooling system is used alone and only partial spray cooling is carried out on the upper side of the second outdoor unit 2-28, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the nineteenth stop valve 2-14, the twentieth stop valve 2-15, the twenty-first stop valve 2-17, the twenty-second stop valve 2-19 are opened, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the eighteenth stop valve 2-12, the twenty-third stop valve 2-21, the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24, the twenty-sixth stop valve 2-26, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the first spray medium circulating pump 2-2, the second spray medium circulating pump 2-7, the second spray medium circulating pump 2-8, the second spray medium circulating pump 2-2, the second spray medium circulating pump, the second spray medium, and the second spray medium, 1-8 parts of a third stop valve, 1-10 parts of a fourth stop valve, 1-12 parts of a fifth stop valve, 1-14 parts of a sixth stop valve, 1-15 parts of a seventh stop valve, 1-17 parts of an eighth stop valve, 1-19 parts of a ninth stop valve, 1-21 parts of a tenth stop valve, 1-22 parts of an eleventh stop valve, 1-24 parts of a twelfth stop valve and 1-26 parts of a thirteenth stop valve;

when the second spray cooling system is used alone and only partial spray cooling is carried out on the right side of the second outdoor unit 2-28, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the twenty-third stop valve 2-21, the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24, the twenty-sixth stop valve 2-26 are opened, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the eighteenth stop valve 2-12, the nineteenth stop valve 2-14, the twentieth stop valve 2-15, the twenty-first stop valve 2-17, the twenty-second stop valve 2-19, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the third stop valve 2-26 and the fourth stop valve 2-7 are closed, 1-8 parts of a third stop valve, 1-10 parts of a fourth stop valve, 1-12 parts of a fifth stop valve, 1-14 parts of a sixth stop valve, 1-15 parts of a seventh stop valve, 1-17 parts of an eighth stop valve, 1-19 parts of a ninth stop valve, 1-21 parts of a tenth stop valve, 1-22 parts of an eleventh stop valve, 1-24 parts of a twelfth stop valve and 1-26 parts of a thirteenth stop valve.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Reference designations in FIG. 1: 1-1, a first bottom tank, 1-2, a first spraying medium circulating pump, 1-3, a first water tank, 1-4, a first flow regulating valve, 1-5, a first stop valve, 1-6, a first flow meter, 1-7, a second stop valve, 1-8, a third stop valve, 1-9, a first row of spray nozzles, 1-10, a fourth stop valve, 1-11, a second row of spray nozzles, 1-12, a fifth stop valve, 1-13, a third row of spray nozzles, 1-14, a sixth stop valve, 1-15, a seventh stop valve, 1-16, a fourth row of spray nozzles, 1-17, an eighth stop valve, 1-18, a fifth row of spray nozzles, 1-19, a ninth stop valve, 1-20, a sixth row of spray nozzles, 1-21, a tenth stop valve, 1-22, an eleventh stop valve, 1-9, a second spray nozzle, a third stop valve, a fourth stop valve, 1-23 parts of a seventh row of nozzles, 1-24 parts of a twelfth stop valve, 1-25 parts of an eighth row of nozzles, 1-26 parts of a thirteenth stop valve, 1-27 parts of a ninth row of nozzles, 1-28 parts of a first outdoor unit, 1-29 parts of a first spray space, 2-1 parts of a second bottom tank, 2-2 parts of a second spray medium circulating pump, 2-3 parts of a second water tank, 2-4 parts of a second flow regulating valve, 2-5 parts of a fourteenth stop valve, 2-6 parts of a second flowmeter, 2-7 parts of a fifteenth stop valve, 2-8 parts of a sixteenth stop valve, 2-9 parts of a tenth row of nozzles, 2-10 parts of a seventeenth stop valve, 2-11 parts of an eleventh row of nozzles, 2-12 parts of an eighteenth stop valve, 2-13 parts of a twelfth row of nozzles, 2-14 parts of a nineteenth stop valve, 2-15 parts of a twentieth stop valve, 2-16 parts of a thirteenth row of nozzles, 2-17 parts of a twenty-first stop valve, 2-18 parts of a fourteenth row of nozzles, 2-19 parts of a twenty-second stop valve, 2-20 parts of a fifteenth row of nozzles, 2-21 parts of a twenty-third stop valve, 2-22 parts of a twenty-fourth stop valve, 2-23 parts of a sixteenth row of nozzles, 2-24 parts of a twenty-fifth stop valve, 2-25 parts of a seventeenth row of nozzles, 2-26 parts of a twenty-sixth stop valve, 2-27 parts of an eighteenth row of nozzles, 2-28 parts of a second outdoor unit, 2-29 parts of a second spray space, 3-1 part of a compressor, 3-2 parts of a condenser, 3-3 parts of a throttle valve, 3-4 parts of a refrigerant circulating pump and 3-5 parts of an evaporator.

Detailed Description

As shown in fig. 1, a spray cooling system of a multi-split air conditioning outdoor unit using an air-cooled heat pump as a cooling source mainly includes an air-cooled heat pump system, a first spray cooling system, and a second spray cooling system. The main components comprise a first bottom pool 1-1, a first spraying medium circulating pump 1-2, a first water tank 1-3, a first row of nozzles 1-9, a second row of nozzles 1-11, a third row of nozzles 1-13, a fourth row of nozzles 1-16, a fifth row of nozzles 1-18, a sixth row of nozzles 1-20, a seventh row of nozzles 1-23, an eighth row of nozzles 1-25, a ninth row of nozzles 1-27, a first outdoor unit 1-28, a first spraying space 1-29, a second bottom pool 2-1, a second spraying medium circulating pump 2-2, a second water tank 2-3, a tenth row of nozzles 2-9, an eleventh row of nozzles 2-11, a twelfth row of nozzles 2-13, a thirteenth row of nozzles 2-16, a fourteenth row of nozzles 2-18, a, A fifteenth row of nozzles 2-20, a sixteenth row of nozzles 2-23, a seventeenth row of nozzles 2-25, an eighteenth row of nozzles 2-27, a second outdoor unit 2-28, a second spray space 2-29, a compressor 3-1, a condenser 3-2, a throttle valve 3-3, a refrigerant circulating pump 3-4, and an evaporator 3-5.

When the multi-split air conditioner outdoor unit is cooled, a switch of a compressor 3-1 is turned on, a refrigerant circulating pump 3-4 is turned on, low-pressure liquid refrigerant enters an evaporator 3-5 through a refrigerant inlet and is evaporated into refrigerant steam, the refrigerant steam is discharged through a refrigerant outlet of the evaporator 3-5 and enters the compressor 3-1 to be compressed into high-pressure refrigerant steam, the high-pressure refrigerant steam is discharged from the compressor 3-1 and enters a condenser 3-2, the high-pressure refrigerant steam is condensed into high-pressure liquid refrigerant by air through forced heat exchange of a fan, the high-pressure liquid refrigerant is discharged through the condenser 3-2 and enters a throttle valve 3-3 to be decompressed into low-pressure liquid refrigerant, the low-pressure liquid refrigerant enters the evaporator 3-5 through the refrigerant circulating pump 3-4 to complete refrigerant circulation, and spray medium enters from an evaporator 3-5 spray medium inlet, after being cooled, the water flows out from an outlet of the spraying medium of the evaporator 3-5 to supply cold for a spraying cooling system.

when the first spray cooling system is independently used and only the upper side of the first outdoor unit 1-28 is subjected to local spray cooling, the first spray medium circulating pump 1-2, the first stop valve 1-5, the sixth stop valve 1-14, the seventh stop valve 1-15, the eighth stop valve 1-17 and the ninth stop valve 1-19 are opened, the second stop valve 1-7, the third stop valve 1-8, the fourth stop valve 1-10, the fifth stop valve 1-12, the tenth stop valve 1-21, the eleventh stop valve 1-22, the twelfth stop valve 1-24, the thirteenth stop valve 1-26, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8 and the seventeenth stop valve 2-10 are closed, 2-12 parts of an eighteenth stop valve, 2-14 parts of a nineteenth stop valve, 2-15 parts of a twentieth stop valve, 2-17 parts of a twenty-first stop valve, 2-19 parts of a twenty-second stop valve, 2-21 parts of a twenty-third stop valve, 2-22 parts of a twenty-fourth stop valve, 2-24 parts of a twenty-fifth stop valve and 2-26 parts of a twenty-sixth stop valve;

when the second spray cooling system is independently used and only the upper side of the second outdoor unit 2-28 is locally spray-cooled, the second spray medium circulating pump 2-2, the fourteenth stop valve 2-5, the nineteenth stop valve 2-14, the twentieth stop valve 2-15, the twenty-first stop valve 2-17, the twenty-second stop valve 2-19 are opened, the fifteenth stop valve 2-7, the sixteenth stop valve 2-8, the seventeenth stop valve 2-10, the eighteenth stop valve 2-12, the twenty-third stop valve 2-21, the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24, the twenty-sixth stop valve 2-26, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the third stop valve 2-7, the fourth stop valve 2-22, the twenty-fifth stop valve 2-24, the twenty-sixth stop valve 2-26, the first spray medium circulating pump 1-2, the first stop valve 1-5, the second stop valve 1-7, the second spray medium circulating pump and the third stop valve 2-7, 1-8 parts of a third stop valve, 1-10 parts of a fourth stop valve, 1-12 parts of a fifth stop valve, 1-14 parts of a sixth stop valve, 1-15 parts of a seventh stop valve, 1-17 parts of an eighth stop valve, 1-19 parts of a ninth stop valve, 1-21 parts of a tenth stop valve, 1-22 parts of an eleventh stop valve, 1-24 parts of a twelfth stop valve and 1-26 parts of a thirteenth stop valve;

After the temperature reduction is finished, turning off a switch of a compressor 3-1, turning off a refrigerant circulating pump 3-4, a first spraying medium circulating pump 1-2, a second spraying medium circulating pump 2-2, a first stop valve 1-5, a second stop valve 1-7, a third stop valve 1-8, a fourth stop valve 1-10, a fifth stop valve 1-12, a sixth stop valve 1-14, a seventh stop valve 1-15, an eighth stop valve 1-17, a ninth stop valve 1-19, a tenth stop valve 1-21, an eleventh stop valve 1-22, a twelfth stop valve 1-24, a thirteenth stop valve 1-26, a fourteenth stop valve 2-5, a fifteenth stop valve 2-7, a sixteenth stop valve 2-8, a seventeenth stop valve 2-10, a, And the eighteenth stop valve 2-12, the nineteenth stop valve 2-14, the twentieth stop valve 2-15, the twenty-first stop valve 2-17, the twenty-second stop valve 2-19, the twenty-third stop valve 2-21, the twenty-fourth stop valve 2-22, the twenty-fifth stop valve 2-24 and the twenty-sixth stop valve 2-26 are arranged, so that the whole system is closed, and the system stops cooling the first outdoor unit 1-28 and the second outdoor unit 2-28.

Claims

1. The utility model provides an use spray cooling system of many online air conditioning outdoor unit of air cooled heat pump as cold source which characterized in that:

the system comprises an air-cooled heat pump system, a first spray cooling system and a second spray cooling system;

the air-cooled heat pump system comprises a compressor (3-1), a condenser (3-2), a throttle valve (3-3), a refrigerant circulating pump (3-4) and an evaporator (3-5);

the evaporator (3-5) is provided with a refrigerant inlet, a refrigerant outlet, a spraying medium inlet and a spraying medium outlet;

the outlet of the compressor (3-1) is connected with the inlet of the condenser (3-2), the outlet of the condenser (3-2) is connected with the inlet of the throttle valve (3-3), the outlet of the throttle valve (3-3) is connected with the inlet of the refrigerant circulating pump (3-4), the outlet of the refrigerant circulating pump (3-4) is connected with the refrigerant inlet of the evaporator (3-5), and the refrigerant outlet of the evaporator (3-5) is connected with the inlet of the compressor (3-1);

the first spray cooling system comprises a first bottom pool (1-1), a first spray medium circulating pump (1-2), a first water tank (1-3), an evaporator (3-5), a first flow regulating valve (1-4), a first stop valve (1-5), a first flow meter (1-6), a second stop valve (1-7), a third stop valve (1-8), a first row of nozzles (1-9), a fourth stop valve (1-10), a second row of nozzles (1-11), a fifth stop valve (1-12), a third row of nozzles (1-13), a sixth stop valve (1-14), a seventh stop valve (1-15), a fourth row of nozzles (1-16), an eighth stop valve (1-17), a fifth row of nozzles (1-18), A ninth stop valve (1-19), a sixth row of nozzles (1-20), a tenth stop valve (1-21), an eleventh stop valve (1-22), a seventh row of nozzles (1-23), a twelfth stop valve (1-24), an eighth row of nozzles (1-25), a thirteenth stop valve (1-26), a ninth row of nozzles (1-27), a first outdoor unit (1-28) and a first spray space (1-29);

the first spraying space (1-29) comprises a first row of nozzles (1-9), a second row of nozzles (1-11), a third row of nozzles (1-13), a fourth row of nozzles (1-16), a fifth row of nozzles (1-18), a sixth row of nozzles (1-20), a seventh row of nozzles (1-23), an eighth row of nozzles (1-25) and a ninth row of nozzles (1-27), and each row comprises four nozzles;

an outlet of the first bottom pool (1-1) is connected with an inlet of a first spraying medium circulating pump (1-2), an outlet of the first spraying medium circulating pump (1-2) is connected with an inlet of a first water tank (1-3), the bottom of the first water tank (1-3) is connected with a tap water pipe network, an outlet of the first water tank (1-3) is connected with a spraying medium inlet of an evaporator (3-5), a spraying medium outlet of the evaporator (3-5) is connected with an inlet of a first flow regulating valve (1-4), an outlet of the first flow regulating valve (1-4) is connected with an inlet of a first stop valve (1-5), an outlet of the first stop valve (1-5) is connected with an inlet of a first flow meter (1-6), and an outlet of the first flow meter (1-6) is connected with a second stop valve (1-7), Inlets of a sixth stop valve (1-14) and a tenth stop valve (1-21) are connected, an outlet of the second stop valve (1-7) is connected with inlets of a third stop valve (1-8), a fourth stop valve (1-10) and a fifth stop valve (1-12), an outlet of the sixth stop valve (1-14) is connected with inlets of a seventh stop valve (1-15), an eighth stop valve (1-17) and a ninth stop valve (1-19), an outlet of the tenth stop valve (1-21) is connected with inlets of an eleventh stop valve (1-22), a twelfth stop valve (1-24) and a thirteenth stop valve (1-26), an outlet of the third stop valve (1-8) is connected with an inlet of a first row of nozzles (1-9), an outlet of the fourth stop valve (1-10) is connected with an inlet of a second row of nozzles (1-11), the outlets of the fifth stop valves (1-12) are connected with the inlets of the third row of nozzles (1-13), the outlets of the seventh stop valves (1-15) are connected with the inlets of the fourth row of nozzles (1-16), the outlets of the eighth stop valves (1-17) are connected with the inlets of the fifth row of nozzles (1-18), the outlets of the ninth stop valves (1-19) are connected with the inlets of the sixth row of nozzles (1-20), the outlets of the eleventh stop valves (1-22) are connected with the inlets of the seventh row of nozzles (1-23), the outlets of the twelfth stop valves (1-24) are connected with the inlets of the eighth row of nozzles (1-25), the outlets of the thirteenth stop valves (1-26) are connected with the inlets of the ninth row of nozzles (1-27), the first row of nozzles (1-9), the second row of nozzles (1-11), The outlets of the third row of nozzles (1-13) are positioned on the right side of the first outdoor unit (1-28), the outlets of the fourth row of nozzles (1-16), the fifth row of nozzles (1-18) and the sixth row of nozzles (1-20) are positioned above the first outdoor unit (1-28), the outlets of the seventh row of nozzles (1-23), the eighth row of nozzles (1-25) and the ninth row of nozzles (1-27) are positioned on the left side of the first outdoor unit (1-28), and the outlet of the first spraying space (1-29) is positioned above the first bottom pool (1-1);

the second spray cooling system comprises a second bottom pool (2-1), a second spray medium circulating pump (2-2), a second water tank (2-3), an evaporator (3-5), a second flow regulating valve (2-4), a fourteenth stop valve (2-5), a second flow meter (2-6), a fifteenth stop valve (2-7), a sixteenth stop valve (2-8), a tenth row of nozzles (2-9), a seventeenth stop valve (2-10), an eleventh row of nozzles (2-11), an eighteenth stop valve (2-12), a twelfth row of nozzles (2-13), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a thirteenth row of nozzles (2-16), a twenty-first stop valve (2-17), A fourteenth row of nozzles (2-18), a twenty-second stop valve (2-19), a fifteenth row of nozzles (2-20), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a sixteenth row of nozzles (2-23), a twenty-fifth stop valve (2-24), a seventeenth row of nozzles (2-25), a twenty-sixth stop valve (2-26), an eighteenth row of nozzles (2-27), a second outdoor unit (2-28), and a second spray space (2-29);

wherein, the second spraying space (2-29) comprises a tenth row of nozzles (2-9), an eleventh row of nozzles (2-11), a twelfth row of nozzles (2-13), a thirteenth row of nozzles (2-16), a fourteenth row of nozzles (2-18), a fifteenth row of nozzles (2-20), a sixteenth row of nozzles (2-23), a seventeenth row of nozzles (2-25) and an eighteenth row of nozzles (2-27), and each row comprises four nozzles;

an outlet of the second bottom pool (2-1) is connected with an inlet of a second spraying medium circulating pump (2-2), an outlet of the second spraying medium circulating pump (2-2) is connected with an inlet of a second water tank (2-3), the bottom of the second water tank (2-3) is connected with a tap water pipe network, an outlet of the second water tank (2-3) is connected with a spraying medium inlet of an evaporator (3-5), a spraying medium outlet of the evaporator (3-5) is connected with an inlet of a second flow regulating valve (2-4), an outlet of the second flow regulating valve (2-4) is connected with an inlet of a fourteenth stop valve (2-5), an outlet of the fourteenth stop valve (2-5) is connected with an inlet of a second flow meter (2-6), an outlet of the second flow meter (2-6) is connected with a fifteenth stop valve (2-7), Inlets of ninth stop valves (2-14) and twenty-third stop valves (2-21) are connected, an outlet of a fifteenth stop valve (2-7) is connected with inlets of a sixteenth stop valve (2-8), a seventeenth stop valve (2-10) and an eighteenth stop valve (2-12), an outlet of the nineteenth stop valve (2-14) is connected with inlets of a twentieth stop valve (2-15), a twenty-first stop valve (2-17) and a twenty-second stop valve (2-19), an outlet of the twenty-third stop valve (2-21) is connected with inlets of a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24) and a twenty-sixth stop valve (2-26), an outlet of the sixteenth stop valve (2-8) is connected with an inlet of a tenth row of nozzles (2-9), the outlet of a seventeenth stop valve (2-10) is connected with the inlet of an eleventh row of nozzles (2-11), the outlet of an eighteenth stop valve (2-12) is connected with the inlet of a twelfth row of nozzles (2-13), the outlet of a twentieth stop valve (2-15) is connected with the inlet of a thirteenth row of nozzles (2-16), the outlet of a twenty-first stop valve (2-17) is connected with the inlet of a fourteenth row of nozzles (2-18), the outlet of a twenty-second stop valve (2-19) is connected with the inlet of a fifteenth row of nozzles (2-20), the outlet of a twenty-fourth stop valve (2-22) is connected with the inlet of a sixteenth row of nozzles (2-23), the outlet of a twenty-fifth stop valve (2-24) is connected with the inlet of a seventeenth row of nozzles (2-25), and the outlet of a twenty-sixth stop valve (2-26) is connected with the inlet of an eighteenth row of nozzles (2-27) The outlets of a tenth row of nozzles (2-9), an eleventh row of nozzles (2-11) and a twelfth row of nozzles (2-13) are positioned on the left side of the second outdoor unit (2-28), the outlets of a thirteenth row of nozzles (2-16), a fourteenth row of nozzles (2-18) and a fifteenth row of nozzles (2-20) are positioned above the second outdoor unit (2-28), the outlets of a sixteenth row of nozzles (2-23), a seventeenth row of nozzles (2-25) and an eighteenth row of nozzles (2-27) are positioned on the right side of the second outdoor unit (2-28), and the outlet of the second spray space (2-29) is positioned above the second bottom pool (2-1).

2. The spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cold source as claimed in claim 1, wherein:

the first row of nozzles (1-9), the second row of nozzles (1-11), the third row of nozzles (1-13), the fourth row of nozzles (1-16), the fifth row of nozzles (1-18), the sixth row of nozzles (1-20), the seventh row of nozzles (1-23), the eighth row of nozzles (1-25), the ninth row of nozzles (1-27) and the first outdoor unit (1-28) are all arranged in a first spraying space (1-29);

the tenth row of nozzles (2-9), the eleventh row of nozzles (2-11), the twelfth row of nozzles (2-13), the thirteenth row of nozzles (2-16), the fourteenth row of nozzles (2-18), the fifteenth row of nozzles (2-20), the sixteenth row of nozzles (2-23), the seventeenth row of nozzles (2-25), the eighteenth row of nozzles (2-27) and the second outdoor unit (2-28) are all arranged in the second spraying space (2-29).

3. The spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cold source as claimed in claim 1, wherein:

the first spraying space (1-29), the second spraying space (2-29), the first bottom pool (1-1), the second bottom pool (2-1), the first water tank (1-3) and the second water tank (2-3) are made of stainless steel;

hollow round holes are distributed in the bottoms of the first spraying space (1-29) and the second spraying space (2-29);

the first water tank (1-3) and the second water tank (2-3) are replenished with water at any time through a tap water pipe network;

the spray circulation medium is water.

4. The spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cold source as claimed in claim 1, wherein:

the condenser (3-2) is an inserted sheet type micro-channel air-cooled heat exchanger, and a cold source of the condenser is from ambient air;

the evaporators (3-5) are plate heat exchangers.

5. The spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cold source as claimed in claim 1, wherein:

the refrigerant of the air-cooled heat pump system is R22, R134a or R407C.

6. The spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cold source as claimed in claim 1, wherein:

the first row of nozzles (1-9), the second row of nozzles (1-11), the third row of nozzles (1-13), the fourth row of nozzles (1-16), the fifth row of nozzles (1-18), the sixth row of nozzles (1-20), the seventh row of nozzles (1-23), the eighth row of nozzles (1-25) and the ninth row of nozzles (1-27), the tenth row of nozzles (2-9), the eleventh row of nozzles (2-11), the twelfth row of nozzles (2-13), the thirteenth row of nozzles (2-16), the fourteenth row of nozzles (2-18), the fifteenth row of nozzles (2-20), the sixteenth row of nozzles (2-23), the seventeenth row of nozzles (2-25) and the eighteenth row of nozzles (2-27) adopt standard fan-shaped solid cone nozzles and are made of 316 stainless steel.

7. The spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cold source as claimed in claim 1, characterized by comprising the following processes:

the first spray cooling system spray medium circulation process comprises the following steps: opening a first spraying medium circulating pump (1-2), a first stop valve (1-5), a second stop valve (1-7), a third stop valve (1-8), a fourth stop valve (1-10), a fifth stop valve (1-12), a sixth stop valve (1-14), a seventh stop valve (1-15), an eighth stop valve (1-17), a ninth stop valve (1-19), a tenth stop valve (1-21), an eleventh stop valve (1-22), a twelfth stop valve (1-24) and a thirteenth stop valve (1-26), wherein water in a first water tank (1-3) enters an evaporator (3-5) for cooling through an evaporator spraying medium inlet, and cold water enters a second stop valve (1-7), a thirteenth stop valve (1-26) through an evaporator spraying medium outlet, Inlets of sixth stop valves (1-14) and tenth stop valves (1-21), cold water flowing out of the second stop valves (1-7) flows to first row nozzles (1-9), second row nozzles (1-11) and third row nozzles (1-13) through the third stop valves (1-8), the fourth stop valves (1-10) and the fifth stop valves (1-12), cold water flowing out of the sixth stop valves (1-14) flows to fourth row nozzles (1-16), fifth row nozzles (1-18) and sixth row nozzles (1-20) through the seventh stop valves (1-15), the eighth stop valves (1-17) and the ninth stop valves (1-19), and cold water flowing out of the tenth stop valves (1-21) flows to eleventh stop valves (1-22), The twelfth stop valve (1-24) and the thirteenth stop valve (1-26) respectively flow to the seventh row of nozzles (1-23), the eighth row of nozzles (1-25) and the ninth row of nozzles (1-27), and cold water flowing out of the first row of nozzles (1-9), the second row of nozzles (1-11), the third row of nozzles (1-13), the fourth row of nozzles (1-16), the fifth row of nozzles (1-18), the sixth row of nozzles (1-20), the seventh row of nozzles (1-23), the eighth row of nozzles (1-25) and the ninth row of nozzles (1-27) cools the first outdoor unit (1-28) and then enters the first bottom tank (1-1) below through the hollow circular holes at the bottom of the first spraying space (1-29), and water in the first bottom tank (1-1) is pumped to the first water tank (1) through the first spraying medium circulating pump (1-2) -3) completing the cycle;

the second spray cooling system spray medium circulation process comprises the following steps: opening a second spraying medium circulating pump (2-2), a fourteenth stop valve (2-5), a fifteenth stop valve (2-7), a sixteenth stop valve (2-8), a seventeenth stop valve (2-10), an eighteenth stop valve (2-12), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a twenty-first stop valve (2-17), a twenty-second stop valve (2-19), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24), a twenty-sixth stop valve (2-26), water in a second water tank (2-3) enters an evaporator (3-5) for cooling through an evaporator spraying medium inlet, and cold water enters a fifteenth stop valve (2-7) through an evaporator spraying medium outlet, The cold water flowing out of the fifteenth stop valve (2-7) flows to a tenth discharge nozzle (2-9), an eleventh discharge nozzle (2-11) and a twelfth discharge nozzle (2-13) through a sixteenth stop valve (2-8), a seventeenth stop valve (2-10) and an eighteenth stop valve (2-12) respectively, the cold water flowing out of the nineteenth stop valve (2-14) flows to a thirteenth discharge nozzle (2-16), a fourteenth discharge nozzle (2-18) and a fifteenth discharge nozzle (2-20) through a twentieth stop valve (2-15), a twenty-first stop valve (2-17) and a twenty-second stop valve (2-19) respectively, and the cold water flowing out of the twenty-third stop valve (2-21) flows to a fourteenth stop valve (2-22), The twenty-fifth stop valve (2-24) and the twenty-sixth stop valve (2-26) respectively flow to a sixteenth row nozzle (2-23), a seventeenth row nozzle (2-25) and an eighteenth row nozzle (2-27), and cold water flowing out of the tenth row nozzle (2-9), the eleventh row nozzle (2-11), the twelfth row nozzle (2-13), the thirteenth row nozzle (2-16), the fourteenth row nozzle (2-18), the fifteenth row nozzle (2-20), the sixteenth row nozzle (2-23), the seventeenth row nozzle (2-25) and the eighteenth row nozzle (2-27) cools a second outdoor unit (2-28) and then enters a first bottom tank (2-1) below through a round hole hollowed at the bottom of a second spray space (2-29), water in the second bottom pool (2-1) is pumped to the second water tank (2-3) by the second spraying medium circulating pump (2-2) to complete circulation;

the refrigerant circulating process: a refrigerant circulating pump (3-4) is started, low-pressure liquid refrigerant enters an evaporator (3-5) through a refrigerant inlet and is evaporated into refrigerant steam, the refrigerant steam is discharged through a refrigerant outlet of the evaporator (3-5) and enters a compressor (3-1) to be compressed into high-pressure refrigerant steam, the high-pressure refrigerant steam is discharged from the compressor (3-1) and then enters a condenser (3-2), the high-pressure refrigerant steam is condensed into high-pressure liquid refrigerant by air through forced heat exchange of a fan, the high-pressure liquid refrigerant enters a throttle valve (3-3) after being discharged through the condenser (3-2) and is reduced in pressure to be low-pressure liquid refrigerant, and the low-pressure liquid refrigerant enters the evaporator (3-5) through the refrigerant circulating pump (3-4) to complete circulation.

8. The method for the spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cooling source as claimed in claim 7 is characterized by comprising the following processes:

when the first spray cooling system and the second spray cooling system are used simultaneously, a first spray medium circulating pump (1-2), a second spray medium circulating pump (2-2), a first stop valve (1-5), a second stop valve (1-7), a third stop valve (1-8), a fourth stop valve (1-10), a fifth stop valve (1-12), a sixth stop valve (1-14), a seventh stop valve (1-15), an eighth stop valve (1-17), a ninth stop valve (1-19), a tenth stop valve (1-21), an eleventh stop valve (1-22), a twelfth stop valve (1-24), a thirteenth stop valve (1-26), a fourteenth stop valve (2-5), a fifteenth stop valve (2-7), The system comprises a sixteenth stop valve (2-8), a seventeenth stop valve (2-10), an eighteenth stop valve (2-12), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a twenty-first stop valve (2-17), a twenty-second stop valve (2-19), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24) and a twenty-sixth stop valve (2-26), and is used for simultaneously carrying out spray cooling on a first outdoor unit (1-28) and a second outdoor unit (2-28);

when the first spray cooling system is used independently, the first spray medium circulating pump (1-2), the first stop valve (1-5), the second stop valve (1-7), the third stop valve (1-8), the fourth stop valve (1-10), the fifth stop valve (1-12), the sixth stop valve (1-14), the seventh stop valve (1-15), the eighth stop valve (1-17), the ninth stop valve (1-19), the tenth stop valve (1-21), the eleventh stop valve (1-22), the twelfth stop valve (1-24), the thirteenth stop valve (1-26) are opened, the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), the fifteenth stop valve (2-7), the sixteenth stop valve (2-8), The system comprises a seventeenth stop valve (2-10), an eighteenth stop valve (2-12), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a twenty-first stop valve (2-17), a twenty-second stop valve (2-19), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24) and a twenty-sixth stop valve (2-26), and the system independently performs spray cooling on the first outdoor unit (1-28);

when the second spray cooling system is independently used, the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), the fifteenth stop valve (2-7), the sixteenth stop valve (2-8), the seventeenth stop valve (2-10), the eighteenth stop valve (2-12), the nineteenth stop valve (2-14), the twentieth stop valve (2-15), the twenty-first stop valve (2-17), the twenty-second stop valve (2-19), the twenty-third stop valve (2-21), the twenty-fourth stop valve (2-22), the twenty-fifth stop valve (2-24), the twenty-sixth stop valve (2-26) are opened, the first spray medium circulating pump (1-2), the first stop valve (1-5), the second stop valve (1-7) are closed, The system comprises a third stop valve (1-8), a fourth stop valve (1-10), a fifth stop valve (1-12), a sixth stop valve (1-14), a seventh stop valve (1-15), an eighth stop valve (1-17), a ninth stop valve (1-19), a tenth stop valve (1-21), an eleventh stop valve (1-22), a twelfth stop valve (1-24) and a thirteenth stop valve (1-26), and the system independently carries out spray cooling on the second outdoor unit (2-28).

9. The method for the spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cooling source as claimed in claim 7 is characterized by comprising the following processes:

when the first spray cooling system is independently used and only partial spray cooling is carried out on the right side of the first outdoor unit (1-28), the first spray medium circulating pump (1-2), the first stop valve (1-5), the second stop valve (1-7), the third stop valve (1-8), the fourth stop valve (1-10), the fifth stop valve (1-12) are opened, the sixth stop valve (1-14), the seventh stop valve (1-15), the eighth stop valve (1-17), the ninth stop valve (1-19), the tenth stop valve (1-21), the eleventh stop valve (1-22), the twelfth stop valve (1-24), the thirteenth stop valve (1-26), the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), A fifteenth stop valve (2-7), a sixteenth stop valve (2-8), a seventeenth stop valve (2-10), an eighteenth stop valve (2-12), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a twenty-first stop valve (2-17), a twenty-second stop valve (2-19), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24), and a twenty-sixth stop valve (2-26);

when the first spray cooling system is independently used and only the upper side of the first outdoor unit (1-28) is subjected to local spray cooling, the first spray medium circulating pump (1-2), the first stop valve (1-5), the sixth stop valve (1-14), the seventh stop valve (1-15), the eighth stop valve (1-17), the ninth stop valve (1-19) are opened, the second stop valve (1-7), the third stop valve (1-8), the fourth stop valve (1-10), the fifth stop valve (1-12), the tenth stop valve (1-21), the eleventh stop valve (1-22), the twelfth stop valve (1-24), the thirteenth stop valve (1-26), the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), A fifteenth stop valve (2-7), a sixteenth stop valve (2-8), a seventeenth stop valve (2-10), an eighteenth stop valve (2-12), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a twenty-first stop valve (2-17), a twenty-second stop valve (2-19), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24), and a twenty-sixth stop valve (2-26);

when the first spray cooling system is independently used and only the left side of the first outdoor unit (1-28) is subjected to local spray cooling, the first spray medium circulating pump (1-2), the first stop valve (1-5), the tenth stop valve (1-21), the eleventh stop valve (1-22), the twelfth stop valve (1-24), the thirteenth stop valve (1-26) are opened, the second stop valve (1-7), the third stop valve (1-8), the fourth stop valve (1-10), the fifth stop valve (1-12), the sixth stop valve (1-14), the seventh stop valve (1-15), the eighth stop valve (1-17), the ninth stop valve (1-19), the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), The device comprises a fifteenth stop valve (2-7), a sixteenth stop valve (2-8), a seventeenth stop valve (2-10), an eighteenth stop valve (2-12), a nineteenth stop valve (2-14), a twentieth stop valve (2-15), a twenty-first stop valve (2-17), a twenty-second stop valve (2-19), a twenty-third stop valve (2-21), a twenty-fourth stop valve (2-22), a twenty-fifth stop valve (2-24) and a twenty-sixth stop valve (2-26).

10. The method for the spray cooling system of the multi-split air conditioning outdoor unit using the air-cooled heat pump as the cooling source as claimed in claim 7 is characterized by comprising the following processes:

when the second spray cooling system is independently used and only partial spray cooling is carried out on the left side of the second outdoor unit (2-28), the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), the fifteenth stop valve (2-7), the sixteenth stop valve (2-8), the seventeenth stop valve (2-10), the eighteenth stop valve (2-12), the nineteenth stop valve (2-14), the twentieth stop valve (2-15), the twenty-first stop valve (2-17), the twenty-second stop valve (2-19), the twenty-third stop valve (2-21), the twenty-fourth stop valve (2-22), the twenty-fifth stop valve (2-24), the twenty-sixth stop valve (2-26), the first spray medium circulating pump (1-2) are opened, The device comprises a first stop valve (1-5), a second stop valve (1-7), a third stop valve (1-8), a fourth stop valve (1-10), a fifth stop valve (1-12), a sixth stop valve (1-14), a seventh stop valve (1-15), an eighth stop valve (1-17), a ninth stop valve (1-19), a tenth stop valve (1-21), an eleventh stop valve (1-22), a twelfth stop valve (1-24) and a thirteenth stop valve (1-26);

when the second spray cooling system is independently used and only partial spray cooling is carried out on the upper side of the second outdoor unit (2-28), the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), the nineteenth stop valve (2-14), the twentieth stop valve (2-15), the twenty-first stop valve (2-17), the twenty-second stop valve (2-19) are opened, the fifteenth stop valve (2-7), the sixteenth stop valve (2-8), the seventeenth stop valve (2-10), the eighteenth stop valve (2-12), the twenty-third stop valve (2-21), the twenty-fourth stop valve (2-22), the twenty-fifth stop valve (2-24), the twenty-sixth stop valve (2-26), the first spray medium circulating pump (1-2), The device comprises a first stop valve (1-5), a second stop valve (1-7), a third stop valve (1-8), a fourth stop valve (1-10), a fifth stop valve (1-12), a sixth stop valve (1-14), a seventh stop valve (1-15), an eighth stop valve (1-17), a ninth stop valve (1-19), a tenth stop valve (1-21), an eleventh stop valve (1-22), a twelfth stop valve (1-24) and a thirteenth stop valve (1-26);

when the second spray cooling system is independently used and only the right side of the second outdoor unit (2-28) is subjected to local spray cooling, the second spray medium circulating pump (2-2), the fourteenth stop valve (2-5), the twenty-third stop valve (2-21), the twenty-fourth stop valve (2-22), the twenty-fifth stop valve (2-24), the twenty-sixth stop valve (2-26) are opened, the fifteenth stop valve (2-7), the sixteenth stop valve (2-8), the seventeenth stop valve (2-10), the eighteenth stop valve (2-12), the nineteenth stop valve (2-14), the twentieth stop valve (2-15), the twenty-first stop valve (2-17), the twenty-second stop valve (2-19), the first spray medium circulating pump (1-2) and the twenty-sixth stop valve are closed, The stop valve comprises a first stop valve (1-5), a second stop valve (1-7), a third stop valve (1-8), a fourth stop valve (1-10), a fifth stop valve (1-12), a sixth stop valve (1-14), a seventh stop valve (1-15), an eighth stop valve (1-17), a ninth stop valve (1-19), a tenth stop valve (1-21), an eleventh stop valve (1-22), a twelfth stop valve (1-24) and a thirteenth stop valve (1-26).