CN202630282U - Closed cooling tower refrigerating system applied to internet data center (IDC) machine room - Google Patents
Closed cooling tower refrigerating system applied to internet data center (IDC) machine room Download PDFInfo
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- CN202630282U CN202630282U CN 201220292390 CN201220292390U CN202630282U CN 202630282 U CN202630282 U CN 202630282U CN 201220292390 CN201220292390 CN 201220292390 CN 201220292390 U CN201220292390 U CN 201220292390U CN 202630282 U CN202630282 U CN 202630282U
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Abstract
The utility model provides a closed cooling tower refrigerating system applied to an internet data center (IDC) machine room. The closed cooling tower refrigerating system comprises a closed cooling tower, a water-cooling refrigerating machine set, a cold water tank, a chilled water pump, a cooling water pump, an IDC machine room terminal device, an embedded control system, a water-cooling refrigerating machine set return water temperature sensor, a closed cooling tower return water temperature sensor, and a closed cooling tower air inlet dry wet bulb temperature sensor. According to the closed cooling tower refrigerating system, the closed cooling tower operates under a dry condition in winter, and accordingly the water-cooling refrigerating machine set is prevented from starting up, and energy-saving and antifreezing effects are achieved; the closed cooling tower operates under a wet condition at night in summer, and accordingly the water-cooling refrigerating machine set is prevented from starting up, and an energy-saving effect is achieved; the water-cooling refrigerating machine set starts up in the daytime in summer; energy storage is achieved through the cold water tank, and operating time of the water-cooling refrigerating machine set is delayed; and during a period of no water supply, a water storage function of the cold water tank is used to guarantee normal operation of an IDC machine room air conditioning system.
Description
Technical field
The utility model relates to the filed of air conditioning of IDC machine room, is specifically related to a kind of closed cooling tower refrigeration system of the IDC of being applied to machine room.
Background technology
Because equipment operation heat dissipation capacity is big, for guaranteeing the normal operation of equipment, computer room temperature need be controlled at 22 ℃ ± 2 ℃ throughout the year in IDC (Internet Data Center, the Internet data center) machine room.The particularity of IDC machine room is following: all be refrigeration duty (1) whole year, thus need annual unlatching refrigeration system, and whole day ran without interruption in 24 hours; (2) the IDC computer-room air conditioning system is because refrigeration duty is big, and the refrigeration system energy consumption is very high; (3) for guarantee that the IDC machine room still can normally move under the situation of cutting off the water, require to be equipped with cistern.
Existing IDC machine room is because the expansion of scale adopts the water-cooled refrigeration unit to cooperate the system form of IDC end equipment more and more.The open type cooling tower that tradition adopts the water-cooled refrigeration unit to cooperate the system of IDC end equipment to adopt, the cistern volume that need be equipped with requires big, and floor space is big, and water consumption is big; And because the IDC machine room all need be opened the water-cooled refrigeration unit whole year, operating cost is high.
For reducing operating cost, the free Refrigeration Technique of promoting at present mainly adopts air-cooled cooling naturally.Adopt air-cooled natural cooling system to have following shortcoming: the cleanliness factor in (1) IDC machine room is difficult to guarantee; (2) humidity in the IDC machine room is difficult to control; (3) air channel is big, and floor space is big, and expense is high; (4) service time limited, energy-conservation power savings is limited.
The utility model content
Above-mentioned defective to existing IDC computer-room air conditioning system technology; The applicant improves through research; A kind of closed cooling tower refrigeration system of the IDC of being applied to machine room is provided, cooperates the water-cooled refrigeration unit, solve the above-mentioned defective that exists in the present technology through closed cooling tower and cold water tank.
The technical scheme of the utility model is following:
A kind of closed cooling tower refrigeration system that is applied to the IDC machine room; Comprise the closed cooling tower, water-cooled refrigeration unit, cold water tank, chilled water pump, cooling water pump and the IDC machine room end equipment that connect by pipeline, and the embedded control system, water-cooled refrigeration unit return water temperature sensor, closed cooling tower return water temperature sensor, closed cooling tower air intake wet and dry bulb temperature sensor, closed cooling tower fan frequency converter, closed cooling tower water circulating pump frequency converter and each electrically operated valve that are electrically connected;
First delivery port of running water pipe, cold water tank is connected with the water supplement port of closed cooling tower through first electrically operated valve, second electrically operated valve respectively by pipeline; The delivery port of closed cooling tower is connected with the water inlet of cold water tank through the 3rd electrically operated valve by pipeline; The delivery port of closed cooling tower is connected with the water inlet of cooling water pump with the 5th electrically operated valve through the 4th electrically operated valve that is linked in sequence by pipeline again; The delivery port of closed cooling tower also is connected with the water inlet of chilled water pump with the 6th electrically operated valve through the 4th electrically operated valve that is linked in sequence by pipeline; First delivery port of water-cooled refrigeration unit is connected with the water inlet of chilled water pump through the 7th electrically operated valve by pipeline; The delivery port of chilled water pump directly is connected with the water inlet of IDC machine room end equipment by pipeline; The delivery port of IDC machine room end equipment is connected with first water inlet of water-cooled refrigeration unit, the water inlet of closed cooling tower through the 8th electrically operated valve, the 9th electrically operated valve respectively by pipeline; The delivery port of cooling water pump directly is connected with second water inlet of water-cooled refrigeration unit by pipeline, and second delivery port of water-cooled refrigeration unit directly is connected with the water inlet of closed cooling tower by pipeline; Second delivery port of cold water tank is connected with the water inlet of cooling water pump, the water inlet of chilled water pump through the 5th electrically operated valve, the 6th electrically operated valve respectively by pipeline;
Water-cooled refrigeration unit return water temperature sensor is installed in first water inlet of water-cooled refrigeration unit; Closed cooling tower return water temperature sensor is installed in the water inlet of closed cooling tower, and closed cooling tower air intake wet and dry bulb temperature sensor is installed in the air inlet place of closed cooling tower; The signal input embedded control system of water-cooled refrigeration unit return water temperature sensor, closed cooling tower return water temperature sensor and closed cooling tower air intake wet and dry bulb temperature sensor acquisition, each electrically operated valve of signal controlling of embedded control system output and closed cooling tower fan frequency converter, closed cooling tower water circulating pump frequency converter; Blower fan in the signal controlling closed cooling tower of closed cooling tower fan frequency converter output, the spray water circulating pump in the signal controlling closed cooling tower of closed cooling tower water circulating pump frequency converter output.
The useful technique effect of the utility model is:
The utility model adopts closed cooling tower operating mode operational mode not open in the winter time on the basis of water-cooled refrigeration unit, utilizes the closed cooling tower that is in the dry cooling condition operation, obtains the chilled water of enough low temperature, satisfies the demand of IDC machine room.Simultaneously, the cooling coil of closed cooling tower and IDC machine room end equipment are formed closed system, effectively avoid with outside air contact the stability of maintenance system operation and the clean level of equipment.In addition, closed cooling tower is near or below dry cooling condition operation under 0 ℃ the situation, the damage to closed cooling tower of avoiding shower water to freeze to cause, the effectively normal operation of safeguards system in temperature.
The utility model adopts closed cooling tower operating mode operational mode not open on the basis of water-cooled refrigeration unit in transition season (spring, autumn), utilizes the closed cooling tower that is in the wet cooling condition operation, obtains the chilled water of enough low temperature, satisfies the demand of IDC machine room.
The utility model adopts closed cooling tower operating mode operational mode not open on the basis of water-cooled refrigeration unit at night in summer, utilizes the closed cooling tower that is in the wet cooling condition operation, obtains the chilled water of enough low temperature, satisfies the demand of IDC machine room.Effectively shorten the running time of water-cooled unit, energy-conservation, economize on electricity, economy.
Do not open in above-mentioned water-cooled refrigeration unit, utilize closed cooling tower refrigeration time, lead to cold water tank to cooled water, can dependable flow, and prolongation utilizes the time of closed cooling tower cooling.
When summer, temperature in the daytime raise gradually, when the water temperature in the cold water tank can not satisfy the air-conditioning demand of IDC machine room end equipment, just open refrigeration unit, obtain the chilled water of enough low temperature, satisfy the demand of IDC machine room.
The utility model adopts the pattern of promptly cutting off the water cutting off the water in emergency circumstances, utilizes water in the cold water tank to satisfy the spray moisturizing needs of closed cooling tower, the normal operation of safeguards system, thus ensure uninterrupted, the normal operation of IDC machine room.
Description of drawings
Fig. 1 is the structured flowchart of the utility model refrigeration system.
Fig. 2 is that the method for operation of the utility model refrigeration system is always schemed.
Fig. 3 is under the normal condition, the loop figure of the closed cooling tower cooling method of operation.
Fig. 4 is under the normal condition, the chilled water circulation loop figure under the water-cooled refrigeration unit cooling operation mode.
Fig. 5 is under the normal condition, the cooling water circulation loop figure under the water-cooled refrigeration unit cooling operation mode.
Fig. 6 is under the normal condition, the water-supply map of the utility model refrigeration system.
Fig. 7 is under the situation of promptly cutting off the water, the water-supply map of the utility model refrigeration system.
[reference numeral explanation] be closed cooling tower 1.; 2. water-cooled refrigeration unit; 3. cold water tank; 4. chilled water pump; 5. cooling water pump; 6.IDC machine room end equipment; 7. embedded control system; 8. water-cooled refrigeration unit return water temperature sensor; 9. closed cooling tower return water temperature sensor; 10. closed cooling tower air intake wet and dry bulb temperature sensor; 11. electrically operated valve; 12. electrically operated valve; 13. electrically operated valve; 14. electrically operated valve; 15. electrically operated valve; 16. electrically operated valve; 17. electrically operated valve; 18. electrically operated valve; 19. electrically operated valve; 20. closed cooling tower fan frequency converter; 21. closed cooling tower water circulating pump frequency converter.
The specific embodiment
Further specify below in conjunction with the specific embodiment of accompanying drawing the utility model.
As shown in Figure 1, the refrigeration system of the utility model comprises closed cooling tower 1, water-cooled refrigeration unit 2, cold water tank 3, chilled water pump 4, cooling water pump 5, IDC machine room end equipment 6, embedded control system 7, water-cooled refrigeration unit return water temperature sensor 8, closed cooling tower return water temperature sensor 9, closed cooling tower air intake wet and dry bulb temperature sensor 10, closed cooling tower fan frequency converter 20, closed cooling tower water circulating pump frequency converter 21 and a plurality of electrically operated valve 11～19.
See Fig. 1; First delivery port of running water pipe, cold water tank 3 is connected with the water supplement port of closed cooling tower 1 through electrically operated valve 11, electrically operated valve 12 respectively by pipeline; The delivery port of closed cooling tower 1 is connected through the water inlet of electrically operated valve 13 with cold water tank 3 by pipeline; The delivery port of closed cooling tower 1 is connected with the water inlet of electrically operated valve 15 with cooling water pump 5 through the electrically operated valve 14 that is linked in sequence by pipeline again; The delivery port of closed cooling tower 1 also is connected with the water inlet of electrically operated valve 16 with chilled water pump 4 through the electrically operated valve 14 that is linked in sequence by pipeline; First delivery port of water-cooled refrigeration unit 2 is connected through the water inlet of electrically operated valve 17 with chilled water pump 4 by pipeline; The delivery port of chilled water pump 4 directly is connected with the water inlet of IDC machine room end equipment 6 by pipeline; The delivery port of IDC machine room end equipment 6 is connected with first water inlet of water-cooled refrigeration unit 2, the water inlet of closed cooling tower 1 through electrically operated valve 18, electrically operated valve 19 respectively by pipeline, and the delivery port of cooling water pump 5 directly is connected with second water inlet of water-cooled refrigeration unit 2 by pipeline, and second delivery port of water-cooled refrigeration unit 2 directly is connected with the water inlet of closed cooling tower 1 by pipeline; Second delivery port of cold water tank 3 is connected with the water inlet of cooling water pump 5, the water inlet of chilled water pump 4 through electrically operated valve 15, electrically operated valve 16 respectively by pipeline.
See Fig. 1, water-cooled refrigeration unit return water temperature sensor 8 is installed in first water inlet of water-cooled refrigeration unit 2, obtains the return water temperature t1 of water-cooled refrigeration unit; Closed cooling tower return water temperature sensor 9 is installed in the water inlet of closed cooling tower 1, obtains the return water temperature t2 of closed cooling tower 1; Closed cooling tower air intake wet and dry bulb temperature sensor 10 is installed in the air inlet place of closed cooling tower 1, obtains the dry-bulb temperature t3 and the wet-bulb temperature ts3 of closed cooling tower 1 air inlet place air.Water-cooled refrigeration unit return water temperature sensor 8, closed cooling tower return water temperature sensor 9 and closed cooling tower air intake wet and dry bulb temperature sensor 10 are with above transducing signal input embedded control system 7; By embedded control system 7 with this as basis for estimation; The output control signal is controlled closed cooling tower fan frequency converter 20, closed cooling tower water circulating pump frequency converter 21 on each electrically operated valve 11～19 and the closed cooling tower 1.Satisfy optimum control under each operating mode, play purpose energy-conservation, economize on electricity.Wherein, the air quantity of closed cooling tower fan frequency converter 20 control closed cooling towers 1.The water spray of closed cooling tower water circulating pump frequency converter 21 control closed cooling towers 1.
The total method of operation of the utility model refrigeration system is as shown in Figure 2, is divided into two kinds of normal condition, emergencies.
See Fig. 2, under the normal condition, refrigeration system is divided into " closed cooling tower cooling " and " water-cooled refrigeration unit refrigeration " two kinds of methods of operation again.Its control mode is distinguished as follows:
1, closed cooling tower cooling: when wet-bulb temperature ts3 is lower than criterion temperature t p3 in closed cooling tower air intake wet and dry bulb temperature sensor 10 temperature, embedded control system 7 output control signals, control each electrically operated valve and form following switching combination:
| Motor-driven |
Open | Motor-driven |
Close |
| Motor-driven |
Open | Motor-driven |
Close |
| Motor-driven |
Close | Motor-driven valve 16 | Open |
| Motor-driven valve 17 | Close | ||
| Motor-driven |
Close | Motor-driven |
Open |
Under the above-mentioned switching combination, the operating loop of refrigeration system is as shown in Figure 3.
Refrigeration unit is not opened, and utilizes cooling tower refrigeration time, leads to cold water tank to cooled water, can dependable flow, and prolongation utilizes the time of cooling tower cooling.
" closed cooling tower cooling " method of operation can be divided into " operation of closed cooling tower dry cooling condition " and " operation of closed cooling tower wet cooling condition " two kinds of situation again.
When (1) dry-bulb temperature t3 is lower than 0 ℃ in closed cooling tower air intake wet and dry bulb temperature sensor 10 temperature; Closed cooling tower 1 has the danger of freezing; System should run on " closed cooling tower dry cooling condition ", and the blower fan of closed cooling tower 1 normally moves, and the spray water circulating pump quits work.Water-cooled refrigeration unit 2 is shut down.Embedded control system 7 is confirmed control signal according to the data t2 of closed cooling tower return water temperature sensor 9, the frequency of control closed cooling tower fan frequency converter 20, thus the control air quantity satisfies variable parameter operation.
(2) dry-bulb temperature t3 is higher than when wet bulb bulb temperature ts3 is lower than criterion temperature t p3 in 0 ℃ and closed cooling tower air intake wet and dry bulb temperature sensor 10 temperature in closed cooling tower air intake wet and dry bulb temperature sensor 10 temperature; Closed cooling tower 1 does not have the danger of freezing; System should run on " closed cooling tower wet cooling condition "; The blower fan of closed cooling tower 1 normally moves, spray water circulating pump operate as normal.Water-cooled refrigeration unit 2 is shut down.Embedded control system 7 is confirmed control signal according to the data t2 of closed cooling tower return water temperature sensor 9, the frequency of control closed cooling tower fan frequency converter 20, thereby control air quantity; The frequency of control closed cooling tower spray water circulating pump frequency converter 21, thus the control water spray satisfies variable parameter operation.
2, water-cooled refrigeration unit refrigeration: when wet-bulb temperature ts3 is higher than criterion temperature t p3 in closed cooling tower air intake wet and dry bulb temperature sensor 10 temperature, embedded control system 7 output control signals, control each electrically operated valve and form following switching combination:
| Motor-driven |
Open | Motor-driven |
Close |
| Motor-driven |
Close | Motor-driven |
Open |
| Motor-driven |
Open | Motor-driven valve 16 | Close |
| Motor-driven valve 17 | Open | ||
| Motor-driven |
Open | Motor-driven |
Close |
Under the above-mentioned switching combination, the operating loop of refrigeration system such as Fig. 4, shown in Figure 5:
The blower fan of closed cooling tower 1 normally moves, spray water circulating pump operate as normal.2 starts of water-cooled refrigeration unit.Embedded control system 7 is confirmed control signal according to the data t1 of water-cooled refrigeration unit return water temperature sensor 8, the frequency of control closed cooling tower fan frequency converter 20, thereby control air quantity; The frequency of control closed cooling tower spray water circulating pump frequency converter 21, thereby control water spray.
Comprehensive above-mentioned 1,2 methods of operation, the water temperature when cold water tank 3 in meet the demands (system less than with outside air temperature as criterion, but with return water temperature as criterion), just can not open water-cooled refrigeration unit 2.Have only the return water temperature of working as to be higher than design temperature, explain that the cold water in the cold water tank 3 can not satisfy the demand of IDC machine room, just need to open water-cooled refrigeration unit 2.
See Fig. 2, " emergency " is meant the situation of promptly cutting off the water.
3. promptly cut off the water.
Under above-mentioned 1,2 normal conditions, the ruuning situation of system is as shown in Figure 6.And under the situation of promptly cutting off the water, the ruuning situation of system is then as shown in Figure 7.At this moment, embedded control system 7 output control signals are controlled each electrically operated valve and are formed following switching combination: (action of other electrically operated valves is constant)
| Motor-driven |
Close | Motor-driven |
Open |
| Motor-driven |
Close | Motor-driven |
Open |
Based on above-mentioned refrigeration system, the refrigerating method of the utility model is summed up as follows:
1) winter, the start of water-cooled refrigeration unit is avoided in the operation of closed cooling tower dry cooling condition, and is energy-conservation, antifreeze.
2) transition season, the start of water-cooled refrigeration unit is avoided in the operation of closed cooling tower wet cooling condition, and is energy-conservation.
3) night in summer, the start of water-cooled refrigeration unit is avoided in the operation of closed cooling tower wet cooling condition, and is energy-conservation.
4) summer, the water-cooled refrigeration unit was started shooting in the daytime; Utilize the cold water tank accumulation of energy, postpone water-cooled refrigeration unit running time.
5) cut off the water the phase, utilize the water storage function of cold water tank, ensure the normal operation of IDC machine room during cutting off the water.
Above-described only is the preferred implementation of the utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite of the basic design that does not break away from the utility model, all should think to be included within the protection domain of the utility model.
Claims (1)
1. closed cooling tower refrigeration system that is applied to the IDC machine room; It is characterized in that: comprise the closed cooling tower (1), water-cooled refrigeration unit (2), cold water tank (3), chilled water pump (4), cooling water pump (5) and the IDC machine room end equipment (6) that connect by pipeline, and the embedded control system (7), water-cooled refrigeration unit return water temperature sensor (8), closed cooling tower return water temperature sensor (9), closed cooling tower air intake wet and dry bulb temperature sensor (10), closed cooling tower fan frequency converter (20), closed cooling tower water circulating pump frequency converter (21) and each electrically operated valve (11～19) that are electrically connected;
First delivery port of running water pipe, cold water tank (3) is connected with the water supplement port of closed cooling tower (1) through first electrically operated valve (11), second electrically operated valve (12) respectively by pipeline; The delivery port of closed cooling tower (1) is connected with the water inlet of cold water tank (3) through the 3rd electrically operated valve (13) by pipeline; The delivery port of closed cooling tower (1) is connected with the water inlet of the 5th electrically operated valve (15) with cooling water pump (5) through the 4th electrically operated valve (14) that is linked in sequence by pipeline again; The delivery port of closed cooling tower (1) also is connected with the water inlet of the 6th electrically operated valve (16) with chilled water pump (4) through the 4th electrically operated valve (14) that is linked in sequence by pipeline; First delivery port of water-cooled refrigeration unit (2) is connected with the water inlet of chilled water pump (4) through the 7th electrically operated valve (17) by pipeline; The delivery port of chilled water pump (4) directly is connected with the water inlet of IDC machine room end equipment (6) by pipeline; The delivery port of IDC machine room end equipment (6) is connected with first water inlet of water-cooled refrigeration unit (2), the water inlet of closed cooling tower (1) through the 8th electrically operated valve (18), the 9th electrically operated valve (19) respectively by pipeline; The delivery port of cooling water pump (5) directly is connected with second water inlet of water-cooled refrigeration unit (2) by pipeline, and second delivery port of water-cooled refrigeration unit (2) directly is connected with the water inlet of closed cooling tower (1) by pipeline; Second delivery port of cold water tank (3) is connected with the water inlet of cooling water pump (5), the water inlet of chilled water pump (4) through the 5th electrically operated valve (15), the 6th electrically operated valve (16) respectively by pipeline;
Water-cooled refrigeration unit return water temperature sensor (8) is installed in first water inlet of water-cooled refrigeration unit (2); Closed cooling tower return water temperature sensor (9) is installed in the water inlet of closed cooling tower (1), and closed cooling tower air intake wet and dry bulb temperature sensor (10) is installed in the air inlet place of closed cooling tower (1); The signal input embedded control system (7) that water-cooled refrigeration unit return water temperature sensor (8), closed cooling tower return water temperature sensor (9) and closed cooling tower air intake wet and dry bulb temperature sensor (10) are gathered, each electrically operated valve of signal controlling (11～19) of embedded control system (7) output and closed cooling tower fan frequency converter (20), closed cooling tower water circulating pump frequency converter (21); Blower fan in the signal controlling closed cooling tower (1) of closed cooling tower fan frequency converter (20) output, the spray water circulating pump in the signal controlling closed cooling tower (1) of closed cooling tower water circulating pump frequency converter (21) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292390 CN202630282U (en) | 2012-06-20 | 2012-06-20 | Closed cooling tower refrigerating system applied to internet data center (IDC) machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292390 CN202630282U (en) | 2012-06-20 | 2012-06-20 | Closed cooling tower refrigerating system applied to internet data center (IDC) machine room |
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|---|---|
| CN202630282U true CN202630282U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292390 Withdrawn - After Issue CN202630282U (en) | 2012-06-20 | 2012-06-20 | Closed cooling tower refrigerating system applied to internet data center (IDC) machine room |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705939A (en) * | 2012-06-20 | 2012-10-03 | 江南大学 | Closed cooling tower refrigerating system applied to IDC (Internet Data Center) room and refrigerating method thereof |
| CN103344023A (en) * | 2013-07-15 | 2013-10-09 | 江苏省邮电规划设计院有限责任公司 | Electronic information machine room coupling-type cooling system |
| CN107105602A (en) * | 2017-05-05 | 2017-08-29 | 北京百度网讯科技有限公司 | Cooling water system for data center |
| CN111595089A (en) * | 2020-04-23 | 2020-08-28 | 昆山巨青电子有限公司 | Machine heat dissipation system using natural water |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| CN114992778A (en) * | 2022-05-23 | 2022-09-02 | 青岛海尔空调电子有限公司 | Anti-freezing control method of air conditioning unit |
-
2012
- 2012-06-20 CN CN 201220292390 patent/CN202630282U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705939A (en) * | 2012-06-20 | 2012-10-03 | 江南大学 | Closed cooling tower refrigerating system applied to IDC (Internet Data Center) room and refrigerating method thereof |
| CN102705939B (en) * | 2012-06-20 | 2014-05-28 | 江南大学 | Closed cooling tower refrigerating system applied to IDC (Internet Data Center) room and refrigerating method thereof |
| CN103344023A (en) * | 2013-07-15 | 2013-10-09 | 江苏省邮电规划设计院有限责任公司 | Electronic information machine room coupling-type cooling system |
| CN107105602A (en) * | 2017-05-05 | 2017-08-29 | 北京百度网讯科技有限公司 | Cooling water system for data center |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US11919363B2 (en) | 2017-08-25 | 2024-03-05 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| CN111595089A (en) * | 2020-04-23 | 2020-08-28 | 昆山巨青电子有限公司 | Machine heat dissipation system using natural water |
| CN114992778A (en) * | 2022-05-23 | 2022-09-02 | 青岛海尔空调电子有限公司 | Anti-freezing control method of air conditioning unit |
| CN114992778B (en) * | 2022-05-23 | 2024-02-20 | 青岛海尔空调电子有限公司 | Anti-freezing control method of air conditioning unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121226 Effective date of abandoning: 20140528 |
|
| RGAV | Abandon patent right to avoid regrant |