Double-cold-source water-fluorine double-coil inter-row air conditioning system
Through the dual-cold source water fluorine double coil air-conditioning system, combined with air cooling and frozen water, natural cold sources are given priority, and mechanical refrigeration is used, which solves the problems of poor energy-saving effects and poor adaptability in the existing technology, and achieves efficient and stable computer room heat dissipation and energy-saving effects.
Patent Information
- Application Number
- CN202421788195.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-07-26
AI Technical Summary
When using natural cold sources and mechanical cooling, existing machine room air conditioning systems have problems such as poor energy saving, poor adaptability and complex structure, which are difficult to meet the needs of efficient and stable heat dissipation, especially in different seasons and load changes.
The dual-cold source water fluorine double coil intercoil air conditioning system is adopted, combining air-cooling and refrigerated water, and natural cold sources are preferred, followed by mechanical refrigeration. The fluorine coil heat exchanger and water coil heat exchanger are used to form a circulation system combining air-cooling and refrigerated water to ensure energy-saving operation throughout the year.
Significantly reduce energy consumption, improve system adaptability and flexibility, ensure efficient cooling under different environmental conditions, improve system reliability and stability, reduce the frequency of use and maintenance costs of mechanical refrigeration equipment, and extend the life of equipment.
Smart Images
Figure CN223195018U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of heat removal in high-density server rooms, and relates to a dual-cold-source air-conditioning system, and in particular to a dual-cold-source water-fluorine double-coil row air-conditioning system that simultaneously utilizes air cooling and chilled water. By combining natural cold sources and mechanical refrigeration and optimizing the cold source utilization method, the heat dissipation efficiency and energy-saving effect of the server room are improved, and the system is particularly suitable for temperature control and energy-saving management in high-density server rooms. Background Art
[0002] With the rapid development of information technology, the density of server cabinets within computer rooms is increasing, and the heat generated by servers is also increasing. To ensure that servers in high-density computer rooms operate normally at the most suitable ambient temperature, heat removal methods for high-density computer rooms are constantly evolving, pursuing higher energy efficiency and better heat dissipation, while also striving for energy conservation and high efficiency. Several major heat removal methods currently exist on the market, but they still have many shortcomings when dealing with seasonal and load fluctuations.
[0003] Existing single-coil heat exchanger air conditioning terminals operate by utilizing natural cooling sources through cooling towers or mechanical cooling using chillers. While these systems utilize natural cooling to some extent, hybrid cooling cannot be used during transitional seasons, leaving some room for energy savings. Furthermore, single-coil heat exchanger systems perform poorly under high loads and extreme environments, making them difficult to meet the efficient and stable heat dissipation requirements of modern computer rooms.
[0004] Currently, there are also water-fluorine double-coil heat exchangers on the market. One fluorine-coil heat exchanger uses the cooling tower's natural cooling source to chill water through an intermediate heat exchanger, while the other water-coil heat exchanger directly uses the chiller for mechanical cooling. This method relatively fully utilizes the natural cooling source and has significant energy savings. However, this system still has some limitations. For example, the collaborative efficiency of the two cooling sources is not ideal in different seasons and under different load conditions, resulting in suboptimal overall energy efficiency.
[0005] In summary, while existing computer room air conditioning systems have made some progress in heat dissipation and energy conservation, they still face challenges such as poor energy efficiency, poor adaptability, and complex structures. Developing a dual-cooling system that can more effectively utilize both natural cooling and mechanical cooling, and flexibly adjust to environmental and load conditions, to further improve computer room cooling efficiency and significantly reduce energy consumption, remains a pressing technical challenge. Utility Model Content
[0006] In view of the shortcomings and deficiencies of the existing technology, the utility model aims to provide a dual-cold-source water-fluorine double-coil inter-row air-conditioning system. The fluorine coil heat exchanger in the water-fluorine double-coil inter-row air-conditioning system and the heat pipe outdoor unit constitute a fluorine refrigeration system that can utilize a natural cold source. The water coil heat exchanger in the water-fluorine double-coil inter-row air-conditioning system and the chilled water outdoor cold source constitute a water refrigeration system. The system adopts a combination of air cooling and chilled water, giving priority to the use of air cooling natural cold sources, and secondly using mechanical refrigeration to produce chilled water, to ensure energy-saving operation of the system throughout the year.
[0007] The technical solution adopted by the present invention to solve its technical problems is:
[0008] A dual-cold-source water-fluorine double-coil row air conditioning system is used for heat exhaust cooling in high-density heat dissipation equipment rooms. It includes at least a water-fluorine double-coil row air conditioner, a heat pipe outdoor unit, and a chilled water outdoor cold source. Specifically:
[0009] The water-fluorine double-coil inter-row air conditioner is arranged between the cabinets in a row, and includes an inter-row sheet metal frame and a water coil heat exchanger, a fluorine coil heat exchanger and an indoor fan arranged in the inter-row sheet metal frame, wherein the fluorine coil heat exchanger is arranged adjacent to the exhaust side of the cabinets in a row and includes at least a refrigerant inlet and a refrigerant outlet, the water coil heat exchanger is arranged downstream of the air path of the fluorine coil heat exchanger and includes at least a water inlet and a water outlet, and the indoor fan is arranged adjacent to the air outlet side of the water coil heat exchanger;
[0010] The heat pipe outdoor unit comprises an outdoor unit frame, a heat pipe condenser and an outdoor fan arranged in the outdoor unit frame, wherein the heat pipe condenser comprises at least a refrigerant inlet and a refrigerant outlet;
[0011] The outdoor cold source of chilled water comprises at least a chilled water inlet and a chilled water outlet;
[0012] The refrigerant inlet and refrigerant outlet of the fluorine coil heat exchanger are respectively connected to the refrigerant outlet and refrigerant inlet of the heat pipe condenser through refrigerant pipelines, thereby forming a refrigerant circulation heat exchange loop;
[0013] The water inlet and water outlet of the water coil heat exchanger are respectively connected to the chilled water outlet and chilled water inlet of the outdoor cold source of chilled water through chilled water pipelines, thereby forming a chilled water circulation heat exchange loop.
[0014] Preferably, the water-fluorine double-coil inter-row air conditioner is used in combination with a closed cold channel, the air outlet side of the water-fluorine double-coil inter-row air conditioner is connected to the closed cold channel, and the air inlet side of the row of cabinets is connected to the closed cold channel, the low-temperature air blown out by the water-fluorine double-coil inter-row air conditioner is discharged into the closed cold channel, the low-temperature air is heated by the server from the air inlet side of the row of cabinets to become high-temperature air and is discharged from the exhaust side of the row of cabinets, the high-temperature air flows back to the air inlet side of the water-fluorine double-coil inter-row air conditioner, is cooled again and then discharged into the closed cold channel, and a new round of air circulation is carried out.
[0015] Preferably, the water-fluorine double-coil inter-row air conditioner is used in combination with a closed hot channel, the air inlet side of the water-fluorine double-coil inter-row air conditioner is connected to the closed hot channel, and the air exhaust side of the row of cabinets is connected to the closed hot channel, and the high-temperature air in the row of cabinets heated by the server is discharged into the closed hot channel, the high-temperature air is sucked in by the air inlet side of the water-fluorine double-coil inter-row air conditioner and cooled into low-temperature air in the water-fluorine double-coil inter-row air conditioner, the cooled low-temperature air enters the computer room environment and flows back to the air inlet side of the row of cabinets, is heated again by the server to become high-temperature air and is discharged into the closed hot channel for a new round of air circulation.
[0016] Preferably, the bottom of the heat pipe outdoor unit is arranged at a position higher than the top of the fluorine coil heat exchanger, so that the refrigerant circulation heat exchange circuit formed by the refrigerant pipeline between the fluorine coil heat exchanger and the heat pipe outdoor unit is driven by gravity.
[0017] Preferably, a refrigerant liquid storage tank and a refrigerant pump are optionally installed on the refrigerant pipeline near the refrigerant outlet of the heat pipe condenser, so that the refrigerant circulation heat exchange circuit formed by the refrigerant pipeline between the fluorine coil heat exchanger and the heat pipe outdoor unit is driven by power.
[0018] Preferably, the number of heat pipe outdoor units is 1 or 2 or more, depending on actual usage requirements and the size of the computer room. The number of heat pipe outdoor units can be 1 to meet basic cooling needs; when redundancy and system reliability are taken into consideration, the number can be set to 2 or more.
[0019] Preferably, an air filter is installed on the return air side of the water-fluorine double-coil inter-row air conditioner to effectively filter dust and particulate matter in the air entering the inter-row air conditioner, prevent pollution and blockage of the heat exchanger, and improve the heat exchange efficiency and operational reliability of the system.
[0020] Preferably, the water-fluorine double-coil inter-row air conditioner is also provided with an indoor unit controller, a return air temperature and humidity sensor, and a supply air temperature sensor, and the heat pipe outdoor unit is also provided with an outdoor unit controller and a return air temperature sensor. The indoor unit controller and the outdoor unit controller are both communicatively connected with the return air temperature and humidity sensor and the supply air temperature sensor. According to the supply and return air temperatures detected by the temperature sensors, the indoor unit controller and the outdoor unit controller respectively adjust the speeds of the indoor fan and the outdoor fan to adapt to load changes.
[0021] Furthermore, the liquid pipe section of the refrigerant pipeline is also provided with an electronic expansion valve that is communicatively connected to the indoor unit controller, and the chilled water pipeline is also provided with a water flow regulating valve, an inlet water temperature sensor and an outlet water temperature sensor that are communicatively connected to the indoor unit controller. The indoor unit controller adjusts the speed of the indoor fan according to the detected supply and return air temperature and the inlet and outlet water temperature, and adjusts the refrigerant flow through the electronic expansion valve and the chilled water flow through the water flow regulating valve, so that the cooling output adapts to the load changes.
[0022] Furthermore, the chilled water pipeline is also provided with an inlet pressure sensor and an outlet pressure sensor that are communicatively connected to the indoor unit controller. The indoor unit controller monitors the inlet and outlet pressures of the chilled water in real time to promptly detect water abnormalities including pipeline leakage or blockage, and adjusts the chilled water flow rate according to the pressure data to optimize the energy consumption of the water system.
[0023] Compared with the existing technology, the dual-cold-source water-fluorine double-coil in-row air conditioning system provided by the utility model has the following beneficial and significant technical effects:
[0024] (1) The fluorine coil heat exchanger and the heat pipe outdoor unit in the water-fluorine double-coil in-row air conditioner of this utility model form a fluorine refrigeration system that can utilize natural cooling sources. By preferentially utilizing natural cooling sources for cooling, the reliance on mechanical refrigeration is greatly reduced, significantly reducing energy consumption and operating costs. During the cooling process, the heat pipe outdoor unit cools the refrigerant via natural air, thereby achieving the goal of energy conservation and environmental protection.
[0025] (2) The water-coil heat exchanger in the water-fluorine dual-coil in-row air conditioner of this utility model and the chilled water outdoor cold source form a water cooling system. When the natural cold source is insufficient, the water-coil heat exchanger can produce chilled water through mechanical refrigeration, ensuring efficient operation of the system in all seasons throughout the year. This dual cold source design combining air cooling and water cooling makes the system more adaptable and flexible, and can meet the cooling needs of different environmental conditions.
[0026] (3) The system of the present invention adopts a combination of air cooling and chilled water, giving priority to the use of air cooling as a natural cooling source, followed by the use of mechanical refrigeration to produce chilled water, to ensure energy-saving operation of the system throughout the year. The priority use of air cooling as a natural cooling source not only effectively reduces the energy consumption of the system, but also reduces the frequency of use and maintenance costs of mechanical refrigeration equipment, thereby extending the service life of the equipment.
[0027] (4) The dual cooling source design of the present invention improves the reliability and stability of the system. Through the combination of redundant design and multiple cooling modes, the system can maintain a stable operating state under any circumstances, avoiding system downtime or performance degradation caused by the failure of a single cooling source. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a structural diagram of the utility model's dual-cold-source water-fluorine double-coil in-row air-conditioning system combined with a closed cold channel.
[0029] Figure 2 This is a structural diagram of the utility model's dual-cold-source water-fluorine double-coil in-row air-conditioning system combined with a closed heat channel.
[0030] Figure 3 This is a structural diagram of the dual-cold-source water-fluorine double-coil in-row air-conditioning system of the utility model when it is used in combination with a closed cold channel, is powered, and has a heat pipe outdoor unit with redundant backup.
[0031] Figure 4 This is a structural diagram of the dual-cold-source water-fluorine double-coil in-row air-conditioning system of the utility model when it is used in combination with a closed heat channel, is powered, and has a heat pipe outdoor unit with redundant backup.
[0032] Description of reference numerals:
[0033] Water-fluorine double-coil inter-row air conditioner 1, inter-row sheet metal frame 1-1, water coil heat exchanger 1-2, fluorine coil heat exchanger 1-3, indoor fan 1-4, indoor unit controller 1-5, air filter 1-6, heat pipe outdoor unit 2, outdoor unit frame 2-1, heat pipe condenser 2-2, outdoor fan 2-3, outdoor unit controller 2-4, chilled water outdoor cold source 3, row cabinet 4, enclosed cold aisle 5, enclosed hot aisle 6, air pipe 7, air pipe header 7-1, air pipe branch 7-2, liquid pipe 8, liquid pipe header 8-1, liquid pipe branch 8-2, chilled water inlet pipe 9, chilled water outlet pipe 10, liquid storage tank 11, refrigerant pump 12. DETAILED DESCRIPTION
[0034] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below with reference to the accompanying drawings and examples. It should be understood that the described examples are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.
[0035] Figure 1 This is a schematic diagram of the structure of the dual-cooling source water-fluorine double-coil inter-row air conditioning system combined with the closed cold channel of the utility model. Figure 2 This is a structural diagram of the utility model's dual-cold-source water-fluorine double-coil in-row air-conditioning system combined with a closed heat channel.
[0036] like Figure 1 、 2 As shown, the dual-cold-source water-fluorine double-coil row air-conditioning system of the present invention includes a water-fluorine double-coil row air-conditioning system 1, a heat pipe outdoor unit 2, and a chilled water outdoor cold source 3. The water-fluorine double-coil row air-conditioning system 1 is arranged between the row cabinets 4 and can be used in combination with the closed cold channel 5 or the closed hot channel 6. The water-fluorine double-coil row air-conditioning system 1 includes an inter-row sheet metal frame 1-1, a water coil heat exchanger 1-2, a fluorine coil heat exchanger 1-3, an indoor fan 1-4, and an indoor unit controller 1-5. The water coil heat exchanger 1-2 and the fluorine coil heat exchanger 1-3 are installed on the inter-row sheet metal frame. Inside the frame 1-1, the exhaust air of the row of cabinets 4 first passes through the fluorine coil heat exchanger 1-3 and then passes through the water coil heat exchanger 1-2; the indoor fan 1-4 is installed on the air outlet side of the water coil heat exchanger 1-2 to enhance heat exchange; the fluorine coil heat exchanger 1-3 includes a refrigerant inlet and a refrigerant outlet; the water coil heat exchanger 1-2 includes a water inlet and a water outlet; the heat pipe outdoor unit 2 includes an outdoor unit frame 2-1, a heat pipe condenser 2-2, an outdoor fan 2-3, and an outdoor unit controller 2-4; the heat pipe condenser 2-2 includes a refrigerant inlet and a refrigerant outlet.
[0037] The fluorine coil heat exchanger 1-3 and the heat pipe condenser 2-2 are connected through the air pipe 7 (including the air pipe branch 7-2 and the air pipe header 7-1, etc.) and the liquid pipe 8 (including the liquid pipe header 8-1 and the liquid pipe branch 8-2, etc.). The refrigerant liquid in the fluorine coil heat exchanger 1-3 absorbs the exhaust heat of the cabinets 4 in the row and evaporates into refrigerant gas. The refrigerant gas enters the refrigerant inlet of the heat pipe condenser 2-2 through the refrigerant outlet of the fluorine coil heat exchanger 1-3, the air pipe branch 7-2, and the air pipe header 7-1, and then utilizes the natural cold source and is condensed into refrigerant liquid through the outdoor fan 2-3 to enhance heat exchange. The refrigerant liquid flows from the refrigerant outlet of the heat pipe condenser 2-2 through the liquid pipe header 8-1 and the liquid pipe branch 8-2 and then flows back to the refrigerant inlet of the fluorine coil heat exchanger 1-3 and enters the fluorine coil heat exchanger 1-3 to continue absorbing heat and evaporating, thereby completely or partially discharging the heat of the cabinets 4 in the row from the computer room.
[0038] The water coil heat exchanger 1-2 is connected to the outdoor cold source 3 of chilled water through the chilled water inlet pipe 9 and the chilled water outlet pipe 10. The water coil heat exchanger 1-2 introduces low-temperature chilled water provided by the outdoor cold source 3 of chilled water through the water inlet and the chilled water inlet pipe 9 thereon. The low-temperature chilled water absorbs the heat of the air cooled by the fluorine coil heat exchanger 1-3 in the water coil heat exchanger 1-2 and is heated up. Then, the low-temperature chilled water flows back to the outdoor cold source 3 of chilled water through the water outlet on the water coil heat exchanger 1-2 and the chilled water outlet pipe 10 to continue to dissipate heat, thereby dissipating heat out of the machine room.
[0039] In some preferred embodiments, the refrigerant circulation heat exchange circuit formed by the fluorine coil heat exchanger 1-3, the air branch pipe 7-2, the air manifold 7-1, the heat pipe outdoor unit 2, the liquid manifold 8-1, and the liquid branch pipe 8-2 can be driven by gravity. In this case, there needs to be a certain height difference between the bottom of the heat pipe outdoor unit 2 and the top of the fluorine coil heat exchanger 1-3. This arrangement can fully utilize the effect of gravity to promote the natural circulation of the refrigerant, thereby improving the heat exchange efficiency of the system. Specifically, when the heat pipe outdoor unit is located at a higher position, the condensed liquid refrigerant can naturally flow to the fluorine coil heat exchanger located at a lower position under the action of gravity. At the same time, the refrigerant vapor that absorbs heat and vaporizes in the fluorine coil heat exchanger naturally rises to the heat pipe outdoor unit due to its reduced density. This natural circulation not only reduces or completely eliminates the need for a circulation pump, reducing system energy consumption, but also simplifies the system structure and improves operational reliability. In addition, this arrangement facilitates refrigerant recovery and system maintenance.
[0040] In some preferred embodiments, the refrigerant circulation heat exchange circuit can also be driven by power. In this case, a liquid storage tank 11 and a refrigerant pump 12 can be optionally installed on the refrigerant outlet pipeline near the heat pipe condenser 2-2. This power-driven design can ensure the effective circulation of the refrigerant in the circuit and improve the heat exchange efficiency when gravity drive is insufficient or the system load is high. The refrigerant liquid storage tank can balance the flow and pressure of the refrigerant in the system to avoid system instability caused by flow fluctuations. The refrigerant pump provides additional driving force to ensure that under different working conditions, the refrigerant can smoothly flow back to the fluorine coil heat exchanger for continuous circulation, thereby enhancing the adaptability and reliability of the system and meeting the cooling needs in various complex and high-load environments.
[0041] In some preferred embodiments, depending on actual usage requirements and the size of the computer room, the number of heat pipe outdoor units 2 in the system can be one, and when redundant backup is taken into account, the number can be two or more. This redundant design ensures that when a heat pipe outdoor unit fails or requires maintenance, the system can still operate stably without affecting the normal operation of the equipment in the computer room. In addition, by increasing the number of heat pipe outdoor units, the overall cooling capacity and efficiency of the system can be improved, better adapting to the high-load and high-heat dissipation density computer room environment, thereby improving the reliability of the system and the stability of long-term operation.
[0042] In some preferred embodiments, an air filter 13 is installed on the return air side of the water-fluorine double-coil inter-row air conditioner 1 to effectively filter dust and particulate matter in the air entering the inter-row air conditioner, prevent pollution and blockage of the heat exchanger, and improve the heat exchange efficiency and operational reliability of the system.
[0043] In some preferred examples, the water-fluorine double-coil row air conditioner 1 is also provided with an indoor unit controller 1-5, a return air temperature and humidity sensor, and a supply air temperature sensor, and the heat pipe outdoor unit 2 is also provided with an outdoor unit controller 2-4. The indoor unit controller 1-5 and the outdoor unit controller 2-4 are both communicated with the return air temperature and humidity sensor and the supply air temperature sensor. According to the supply and return air temperatures detected by the temperature sensors, the indoor unit controller 1-5 and the outdoor unit controller 2-4 respectively adjust the speed of the indoor fan and the outdoor fan to adapt to load changes.
[0044] In addition, an electronic expansion valve that is communicatively connected to the indoor unit controller 1-5 may be provided on the liquid pipe section of the refrigerant pipeline, and a water flow regulating valve, an inlet water temperature sensor, and an outlet water temperature sensor that are communicatively connected to the indoor unit controller 1-5 may be provided on the chilled water pipeline. The indoor unit controller 1-5 adjusts the speed of the indoor fan 1-4 according to the detected supply and return air temperature and inlet and outlet water temperature, and adjusts the refrigerant flow through the electronic expansion valve and the chilled water flow through the water flow regulating valve, so that the cooling output adapts to load changes.
[0045] At the same time, the chilled water pipeline can also be equipped with an inlet pressure sensor and an outlet pressure sensor that are communicated with the indoor unit controller 1-5. The indoor unit controller 1-5 monitors the inlet and outlet pressures of the chilled water in real time to promptly detect water abnormalities including pipeline leakage or blockage, and adjusts the chilled water flow according to the pressure data to optimize the energy consumption of the water system.
[0046] Figure 3This is a schematic diagram of the structure of the dual-cold-source water-fluorine double-coil inter-row air-conditioning system of the present invention when it is used in combination with a closed cold channel, is powered and has a heat pipe outdoor unit with redundant backup. As shown in the figure, the water-fluorine double-coil inter-row air-conditioning system 1 is used in combination with the closed cold channel 5. The air outlet side of the water-fluorine double-coil inter-row air-conditioning system 1 is connected to the closed cold channel 5, and the air inlet side of the row cabinet 4 is connected to the closed cold channel 5. The low-temperature air blown out by the water-fluorine double-coil inter-row air-conditioning system 1 is discharged into the closed cold channel 5. The low-temperature air is heated by the server from the air inlet side of the row cabinet 4 to become high-temperature air and is discharged from the exhaust side of the row cabinet 4. The high-temperature air flows back to the air inlet side of the water-fluorine double-coil inter-row air-conditioning system 1, is cooled again and then discharged into the closed cold channel 5; the water-fluorine double-coil inter-row air-conditioning system 1 and the row cabinet 4 are connected. , the air flow in the closed cold channel 5 is shown in the direction of arrow A in the figure; the air flow in the heat pipe outdoor unit 2 is shown in the direction of arrow B in the figure; the refrigerant flow direction in the refrigerant circulation heat exchange circuit composed of the fluorine coil heat exchanger 1-3 and the gas pipe branch 7-2, the gas pipe header 7-1, the heat pipe outdoor unit 2, the liquid pipe header 8-1, the liquid pipe branch 8-2, the liquid storage tank 11, and the refrigerant pump 12 is shown by arrow C in the figure; the chilled water flow direction in the chilled water system composed of the water coil heat exchanger 1-2 and the chilled water inlet pipe 9, the chilled water outlet pipe 10, and the chilled water outdoor cold source 3 is shown by arrow D in the figure.
[0047] Figure 4 This is a schematic diagram of the structure of the dual-cold-source water-fluorine double-coil inter-row air-conditioning system of the present invention when it is used in combination with a closed hot channel, is powered and has redundant backup for the heat pipe outdoor unit. As shown in the figure, the water-fluorine double-coil inter-row air-conditioning system 1 is used in combination with the closed hot channel 6. The air inlet side of the water-fluorine double-coil inter-row air-conditioning system 1 is connected to the closed hot channel 6, and the air outlet side of the row cabinets 4 is connected to the closed hot channel. The high-temperature air in the row cabinets 4 that has been heated by the server is discharged into the closed hot channel 6. The high-temperature air is sucked in by the air inlet side of the water-fluorine double-coil inter-row air-conditioning system 1 and cooled into low-temperature air in the water-fluorine double-coil inter-row air-conditioning system 1. The cooled low-temperature air enters the computer room environment and flows back to the air inlet side of the row cabinets 4. After being heated by the server again, it becomes high-temperature air and is discharged into the closed hot channel 6, thus starting a new round of air circulation. The air flow in the coil inter-row air conditioner 1, the row cabinet 4, and the closed hot channel 6 is shown in the direction of arrow E in the figure; the air flow in the heat pipe outdoor unit 2 is shown in the direction of arrow B in the figure; the refrigerant flow direction in the refrigerant circulation heat exchange circuit composed of the fluorine coil heat exchanger 1-3, the gas pipe branch 7-2, the gas pipe header 7-1, the heat pipe outdoor unit 2, the liquid pipe header 8-1, the liquid pipe branch 8-2, the liquid storage tank 11, and the refrigerant pump 12 is shown in the direction of arrow C in the figure; the chilled water flow direction in the chilled water system composed of the water coil heat exchanger 1-2, the chilled water inlet pipe 9, the chilled water outlet pipe 10, and the chilled water outdoor cold source 3 is shown in the direction of arrow D in the figure.
[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A dual-cooling-source water-fluorine double-coil row air conditioning system, comprising a water-fluorine double-coil row air conditioner, a heat pipe outdoor unit, and a chilled water outdoor cooling source, characterized in that: The water-fluorine double-coil inter-row air conditioner is arranged between the cabinets in a row, and includes an inter-row sheet metal frame and a water coil heat exchanger, a fluorine coil heat exchanger and an indoor fan arranged in the inter-row sheet metal frame, wherein: The fluorine coil heat exchanger is arranged adjacent to the exhaust side of the row of cabinets and includes at least a refrigerant inlet and a refrigerant outlet. The water coil heat exchanger is arranged downstream of the air path of the fluorine coil heat exchanger and includes at least a water inlet and a water outlet. The indoor fan is arranged adjacent to the air outlet side of the water coil heat exchanger. The heat pipe outdoor unit comprises an outdoor unit frame, a heat pipe condenser and an outdoor fan arranged in the outdoor unit frame, wherein the heat pipe condenser comprises at least a refrigerant inlet and a refrigerant outlet; The outdoor cold source of chilled water comprises at least a chilled water inlet and a chilled water outlet; The refrigerant inlet and refrigerant outlet of the fluorine coil heat exchanger are respectively connected to the refrigerant outlet and refrigerant inlet of the heat pipe condenser through refrigerant pipelines to form a refrigerant circulation heat exchange loop; The water inlet and water outlet of the water coil heat exchanger are respectively connected to the chilled water outlet and chilled water inlet of the outdoor cold source of chilled water through a chilled water pipeline, forming a chilled water circulation heat exchange loop.
2. The dual-cooling source water-fluorine double-coil inter-row air conditioning system according to claim 1 is characterized in that: The water-fluorine double-coil inter-row air conditioner is used in combination with a closed cold channel. The air outlet side of the water-fluorine double-coil inter-row air conditioner is connected to the closed cold channel, and the air inlet side of the row of cabinets is connected to the closed cold channel. The low-temperature air blown out by the water-fluorine double-coil inter-row air conditioner is discharged into the closed cold channel. The low-temperature air is heated by the server from the air inlet side of the row of cabinets to become high-temperature air and is discharged from the exhaust side of the row of cabinets. After the high-temperature air flows back to the air inlet side of the water-fluorine double-coil inter-row air conditioner, it is cooled again and then discharged into the closed cold channel.
3. The dual-cooling source water-fluorine double-coil in-row air conditioning system according to claim 1, characterized in that: The water-fluorine double-coil inter-row air conditioner is used in combination with a closed hot channel. The air inlet side of the water-fluorine double-coil inter-row air conditioner is connected to the closed hot channel, and the air exhaust side of the row of cabinets is connected to the closed hot channel. The high-temperature air in the row of cabinets heated by the server is discharged into the closed hot channel. The high-temperature air is sucked into the air inlet side of the water-fluorine double-coil inter-row air conditioner and cooled into low-temperature air in the water-fluorine double-coil inter-row air conditioner. The cooled low-temperature air enters the computer room environment and flows back to the air inlet side of the row of cabinets. After being heated by the server again, it becomes high-temperature air and is discharged into the closed hot channel.
4. The dual-cooling source water-fluorine double-coil in-row air conditioning system according to claim 1, characterized in that: The bottom of the heat pipe outdoor unit is arranged at a position higher than the top of the fluorine coil heat exchanger, so that the refrigerant circulation heat exchange circuit formed by the refrigerant pipeline between the fluorine coil heat exchanger and the heat pipe outdoor unit is driven by gravity.
5. The dual-cooling source water-fluorine double-coil in-row air conditioning system according to claim 4, characterized in that: A refrigerant liquid storage tank and a refrigerant pump are provided on the refrigerant pipeline near the refrigerant outlet of the heat pipe condenser, so that the refrigerant circulation heat exchange loop formed by the refrigerant pipeline between the fluorine coil heat exchanger and the heat pipe outdoor unit is driven by power.
6. The dual-cold-source water-fluorine double-coil in-row air conditioning system according to any one of claims 1 to 5, characterized in that: Depending on actual usage requirements and the size of the computer room, the number of heat pipe outdoor units set is 1 or 2 or more.
7. The dual-cooling-source water-fluorine double-coil in-row air conditioning system according to any one of claims 1 to 5, characterized in that: An air filter is installed on the return air side of the water-fluorine double-coil inter-row air conditioner to filter dust and particulate matter in the air entering the inter-row air conditioner.