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CN-122028365-A - Data center cabinet and machine room cooling heat recovery system cooled by dry ice spraying

CN122028365ACN 122028365 ACN122028365 ACN 122028365ACN-122028365-A

Abstract

The invention provides a cooling heat recovery system for a data center cabinet and a machine room cooled by dry ice spraying, which comprises a heat exchanger, a low-pressure compressor, a high-pressure compressor, a gas cooler, a gas-liquid separator, a heat regenerator, a first cabinet, a second cabinet, a third cabinet and a carbon dioxide fluid medium, wherein the carbon dioxide fluid medium is a cabinet cooling medium, a plurality of blade server cooling spaces are arranged in the cabinet, each blade server cooling space comprises a spraying chamber, a shelf and a gas collecting chamber, a plurality of blade servers are vertically and tightly arranged on the shelf, and cooling channels are arranged among the spraying chamber, the shelf, the gas collecting chamber and the blade servers. According to the invention, the two-stage compression carbon dioxide refrigerating system is utilized to provide carbon dioxide liquid, the carbon dioxide liquid is throttled and cooled by the nozzle to form dry ice particle fluid to be sprayed into each server in the cabinet, so that each server module is cooled, and the cabinet has a compact structure.

Inventors

  • NING JINGHONG

Assignees

  • 天津商业大学

Dates

Publication Date
20260512
Application Date
20260205

Claims (10)

  1. 1. A data center cabinet cooled by dry ice spraying is characterized in that an opening is formed in the front of the cabinet, a liquid supply pipe (7) and an air return main pipe (8) are arranged outside the cabinet, a plurality of blade server cooling spaces are sequentially arranged in the cabinet from top to bottom and are not communicated, each blade server cooling space comprises a spraying chamber (11), a shelf (22) and an air collection chamber (10) which are sequentially arranged from top to bottom, the spraying chambers (11) and the air collection chambers (10) are of a closed chamber structure, the shelf (22) is of a square chamber structure with an open front, the left and right plates of the cabinet and the rear plates of the shelf are left and right cavity walls of the shelf, the top plate of the shelf (22) is simultaneously used as a bottom plate of the spraying chamber (11), and the bottom plate of the shelf (22) is simultaneously used as a top plate of the air collection chamber (10); The shelf (22) is vertically and tightly provided with a plurality of blade servers (1) from left to right, a top plate of the shelf (22) is correspondingly provided with a dry ice particle fluid inlet (26), the dry ice particle fluid inlet (26) is communicated with the spray chamber (11), a bottom plate of the shelf (22) is correspondingly provided with a carbon dioxide gas outlet (27) and a gas collecting chamber (10), the top of the blade server (1) is provided with an inlet and is communicated with a corresponding dry ice particle fluid inlet (26) on the top plate of the shelf, and meanwhile, the bottom of the blade server (1) is provided with an outlet and is communicated with a corresponding carbon dioxide gas outlet (27) on the bottom plate of the shelf to form a cooling fluid channel for entering and exiting each server; A nozzle (2) with a downward spout is arranged in the spray chamber (11), a nozzle inlet (21) of the nozzle (2) is connected with a liquid supply pipe (7), and the liquid supply pipe (7) is connected with dry ice particle fluid preparation equipment; the gas collection chamber (10) is provided with a gas return port (14), and the gas return port (14) is connected with the gas return main pipe (8).
  2. 2. A dry ice blast cooled data center cabinet as claimed in claim 1, wherein the nozzle (2) is arranged at an upper middle position of the blast chamber, the nozzle (2) comprises a blast chamber (23), a nozzle inlet (21) arranged at the top of the blast chamber, and 2n+1 spouts (24) are arranged at the bottom of the blast chamber, n is equal to or greater than 1, one of the spouts (24) is vertically downward and arranged at the middle position of the blast chamber (23), the rest spouts (24) are symmetrically arranged at left and right sides of the spouts (24) at the middle position, and the spouts (24) at the left side are all obliquely arranged leftwards and the spouts (24) at the right side are all obliquely arranged rightwards.
  3. 3. A dry ice blast cooled data center cabinet as claimed in claim 1, wherein the liquid supply pipe (7) and the return air main pipe (8) are arranged on a rear plate of the cabinet.
  4. 4. A dry ice blast cooled data center cabinet as set forth in claim 1, wherein the front opening of the cabinet is provided with a cabinet door.
  5. 5. A machine room cooling heat recovery system for cooling and recovering heat from the data center cabinets according to any one of claims 1 to 4, wherein the machine room cooling heat recovery system comprises a heat exchanger (45), a low-pressure compressor (30), a high-pressure compressor (31), a gas cooler (32), a gas-liquid separator (34), a regenerator (35), a first cabinet (41), a second cabinet (40), a third cabinet (39) and a carbon dioxide fluid medium; The first type of cabinet (41), the second type of cabinet (40) and the third type of cabinet (39) are determined according to the fluid outlet pressure of the blade servers placed on the data center cabinet, wherein the fluid outlet pressure of the blade servers (1) in each type of cabinet is consistent, and the fluid outlet pressure of the blade servers in the first type of cabinet is greater than the fluid outlet pressure of the blade servers in the second type of cabinet by greater than the fluid outlet pressure of the blade servers in the third type of cabinet; The outlet of the low-pressure compressor (30) is connected with the gas outlet of the gas-liquid separator (34) in parallel and then is connected with the inlet of the high-pressure compressor (31), the outlet of the high-pressure compressor (31) is connected with the inlet of the gas cooler (32), the outlet of the gas cooler (32) is divided into two paths, one path is connected with the fluid inlet of the gas-liquid separator (34) and the other path is connected with the main fluid inlet of the first jet ejector (42), the liquid outlet of the gas-liquid separator (34) is connected with the pipe-side liquid inlet of the regenerator (35), and the pipe-side liquid outlet of the regenerator (35) is simultaneously connected with the inlet jet ejectors of the liquid supply pipes (7) of the first type of machine cabinet (41), the second type machine cabinet (40) and the third type machine cabinet (39), and the gas outlet of the gas-liquid separator (34) is simultaneously connected with the main fluid inlets of the second jet ejector (43) and the third jet ejector (44); The jet fluid inlet of the first jet ejector (42) is connected with the outlet of the air return main pipe (8) of the first type of cabinet (41), the jet fluid inlet of the second jet ejector (43) is connected with the outlet of the air return main pipe (8) of the second type of cabinet (40), and the jet fluid inlet of the third jet ejector (44) is connected with the outlet of the air return main pipe (8) of the third type of cabinet (39); The shell-side gas outlet of the regenerator (35) is connected with the inlet of the heat exchanger (45), and the outlet of the heat exchanger (45) is connected with the inlet of the low-pressure compressor (30).
  6. 6. The cooling heat recovery system of a machine room according to claim 5, wherein a first electromagnetic valve (36) is arranged on a connecting pipeline between a pipe side liquid outlet of the regenerator (35) and a liquid supply pipe (7) of a first type cabinet (41), a second electromagnetic valve (37) is arranged on a connecting pipeline between the first electromagnetic valve and a liquid supply pipe (7) of a second type cabinet (40), and a third electromagnetic valve (38) is arranged on a connecting pipeline between the second electromagnetic valve and a liquid supply pipe (7) of a third type cabinet (39); a fourth electromagnetic valve (47) is arranged on a main fluid inlet connecting pipeline of the outlet of the gas cooler (32) and the first jet ejector (42); a fifth electromagnetic valve (48) is arranged on a connecting pipeline between a gas outlet of the gas-liquid separator (34) and a main fluid inlet of the second jet ejector (43); A sixth electromagnetic valve (49) is arranged on a main fluid inlet connecting pipeline between a gas outlet of the gas-liquid separator (34) and the third jet ejector (44).
  7. 7. The cooling heat recovery system of a machine room according to claim 5, wherein a first pressure regulating valve (50) is arranged on a connection pipeline between a diffuser outlet of the second jet ejector (43) and a shell side inlet of the regenerator (35); and a second pressure regulating valve (51) is arranged on a connecting pipeline between the diffusion section outlet of the first jet ejector (42) and the shell side inlet of the heat regenerator (35).
  8. 8. A machine room cooling heat recovery system according to claim 5, wherein a throttling element (33) is arranged on the connection line between the outlet of the gas cooler (32) and the main fluid inlet of the gas-liquid separator (34).
  9. 9. The cooling heat recovery system of a machine room according to claim 5, wherein the heat exchanger (45) is disposed in an air duct, and a fan (46) is further disposed in the air duct, and an outlet of the air duct faces the data center.
  10. 10. The cooling heat recovery system of a machine room according to claim 5, wherein the gas cooler (32) is disposed in a heating water tank, a water supply pipe is disposed at a water inlet of the heating water tank, and an outlet is connected with an inlet of the heat storage water tank.

Description

Data center cabinet and machine room cooling heat recovery system cooled by dry ice spraying Technical Field The invention belongs to the field of data center server heat management and machine room cooling, and particularly relates to a data center cabinet cooled by dry ice spraying and a machine room cooling heat recovery system. Background With the rapid development of digital society, data centers have become important engines supporting digital transformation of economy and society and boosting digital economic explosion. To meet the ever-increasing demand for data volumes, the computing power of servers and the load-bearing capacity of data centers are increased by increasing the power density of individual racks. The heat dissipation of the data center accounts for a huge amount of power consumption. With the increasing power of servers in single cabinets of data centers, the traditional cooling technology cannot meet the rapid and efficient cooling requirements of the data centers. Meanwhile, the data center needs to dissipate heat all the year round as a stable heat source, and the heat discharged by the data center is recovered for clean heating so as to realize energy efficient utilization. Development of low-carbon efficient cooling technology is needed. The dry ice is used as a natural working medium, has good thermodynamic performance, the boiling point is-78.5 ℃, and the solid dry ice absorbs heat and sublimates to provide a large amount of cold load, so that the cooling speed is high, the temperature is uniform, and the cooling technology is a green and efficient cooling technology. Disclosure of Invention In view of the above, the present invention is directed to a cooling heat recovery system for a cabinet and a machine room of a data center cooled by dry ice spraying, so as to solve the technical defects of heat dissipation in the conventional cooling technology of the data center. The invention relates to a data center cabinet cooled by dry ice spraying and a machine room cooling heat recovery system, firstly, the invention content of the data center cabinet cooled by dry ice spraying is described as follows: The data center cabinet is characterized in that the front of the cabinet is opened, a liquid supply pipe and a gas return main pipe are arranged outside the cabinet, a plurality of blade server cooling spaces are sequentially arranged in the cabinet from top to bottom and are not communicated, each blade server cooling space comprises an injection chamber, a shelf and a gas collection chamber which are sequentially arranged from top to bottom, the injection chamber and the gas collection chamber are of a closed chamber structure, the shelf is of a square chamber structure with an open front, the left plate, the right plate and the rear plate of the cabinet are the left cavity wall, the right cavity wall and the rear cavity wall of the shelf, the top plate of the shelf is simultaneously used as the bottom plate of the injection chamber, and the bottom plate of the shelf is simultaneously used as the top plate of the gas collection chamber; The shelf is vertically and tightly provided with a plurality of blade servers from left to right, a top plate of the shelf is provided with a dry ice particle fluid inlet corresponding to each blade server, a bottom plate of the shelf is provided with a carbon dioxide gas outlet corresponding to each blade server, the top of the blade server is provided with an inlet and is communicated with the corresponding dry ice particle fluid inlet on the top plate of the shelf, and simultaneously, the bottom of the blade server is provided with an outlet and is communicated with the corresponding carbon dioxide gas outlet on the bottom plate of the shelf to form a cooling fluid channel for entering and exiting each server; A nozzle with a downward spout is arranged in the spraying chamber, a nozzle inlet of the nozzle is connected with a liquid supply pipe, and the liquid supply pipe is connected with dry ice particle fluid preparation equipment; The gas collection chamber is provided with a gas return port, and the gas return port is connected with a gas collection pipe. Further, the nozzle is arranged at the middle position of the upper part of the spray chamber, the nozzle comprises a spray cavity, a nozzle inlet arranged at the top of the spray cavity, 2n+1 spray nozzles are arranged at the bottom of the spray cavity, n is more than or equal to 1, one spray nozzle is vertically downward and is arranged at the middle position of the spray cavity, the rest spray nozzles are symmetrically arranged at the left side and the right side of the spray nozzle at the middle position, and the spray nozzles at the left side are obliquely arranged leftwards and the spray nozzles at the right side are obliquely arranged rightwards. Further, the liquid supply pipe and the air return main pipe are arranged on the rear plate of the cabinet. Further, the front opening of