CN203216165U - Supercooling device applied to natural cold source magnetic levitation refrigerating system - Google Patents
Supercooling device applied to natural cold source magnetic levitation refrigerating system Download PDFInfo
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- 238000004781 supercooling Methods 0.000 title claims abstract description 19
- 238000005339 levitation Methods 0.000 title abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims abstract description 28
- 238000005057 refrigeration Methods 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000008676 import Effects 0.000 claims 4
- 230000005494 condensation Effects 0.000 abstract description 7
- 238000009833 condensation Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 239000012267 brine Substances 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 239000003570 air Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
本实用新型公开了一种应用于自然冷源磁悬浮制冷系统的过冷装置，包括蒸发器、磁悬浮压缩机、一次过冷段和二次过冷段；所述蒸发器出口与磁悬浮压缩机的吸气口连接；一次过冷段包括冷媒系统盘管和自然冷源盘管，自然冷源盘管中部分冷凝管作为一次过冷管，磁悬浮压缩机排气口依次与冷媒系统盘管和一次过冷管连通，自然冷源盘管剩余冷凝管用于载冷剂冷却；所述一次过冷管的出液口通过管道依次与二次过冷段和蒸发器的进口连接；同时一次过冷管的出液口设有支路，并与磁悬浮压缩机的电机的冷却进口连接。本实用新型结构简单可靠，实现二次过冷的目的，获得更高过冷度，提高单位冷媒制冷能力，减少冷媒充注量和换热器铜管使用量，提高机组能效。
The utility model discloses a supercooling device applied to a natural cold source magnetic suspension refrigeration system, which comprises an evaporator, a magnetic suspension compressor, a primary subcooling section and a secondary subcooling section; the outlet of the evaporator and the magnetic suspension compressor absorb Gas port connection; the primary subcooling section includes the refrigerant system coil and the natural cooling source coil, part of the condensation pipe in the natural cooling source coil is used as the primary subcooling pipe, and the exhaust port of the magnetic levitation compressor is connected with the refrigerant system coil and the primary cooling coil in turn. The cold pipes are connected, and the remaining condensing pipes of the natural cooling source coil are used for cooling the brine; the liquid outlet of the primary subcooling pipe is connected with the secondary subcooling section and the inlet of the evaporator in turn through the pipeline; at the same time, the primary subcooling pipe The liquid outlet is provided with a branch circuit, and is connected with the cooling inlet of the motor of the magnetic levitation compressor. The utility model has a simple and reliable structure, realizes the purpose of secondary subcooling, obtains higher supercooling degree, improves the refrigeration capacity of unit refrigerant, reduces refrigerant charge and heat exchanger copper tube usage, and improves unit energy efficiency.
Description
技术领域 technical field
本实用新型属于空调制冷技术，尤其涉及制冷压缩机和自然冷源联合冷水机组。 The utility model belongs to the air-conditioning refrigeration technology, in particular to a refrigeration compressor and a natural cold source combined chiller.
背景技术 Background technique
伴随着国家节能减排的政策出台，利用第二冷源和自然冷源成为空调行业的主要节能手段之一，尤其是机房空调领域，因为数据中心全年都有制冷需求，在过度季节和冬季利用自然冷源节能效果会更显著。 With the promulgation of national energy conservation and emission reduction policies, the use of second cold sources and natural cold sources has become one of the main energy-saving means in the air-conditioning industry, especially in the field of computer room air-conditioning, because data centers have cooling needs throughout the year, in transitional seasons and winter The energy saving effect of using natural cold source will be more significant.
数据中心的制冷需求一般是来自IT设备的冷却需要，使用冷冻水的数据中心一般是通过冷冻水设备里的冷冻水和机房内的空气进行换热，从而实现机房内的降温，水温升高之后（一般在12-18度甚至更高）进入冷水机组处进行降温（温度一般在7-15之间）。在室外温度较低时，机房出来的水（12-18度）可以直接或间接地和环境空气进行换热， 从而不用开启压缩机，达到免费制冷的目的，一般称之为自然冷源或者免费冷源。 The cooling demand of data centers generally comes from the cooling needs of IT equipment. Data centers that use chilled water generally exchange heat between the chilled water in the chilled water equipment and the air in the computer room, so as to achieve cooling in the computer room and increase the water temperature. After that (generally at 12-18 degrees or even higher), it enters the chiller for cooling (the temperature is generally between 7-15 degrees). When the outdoor temperature is low, the water (12-18 degrees) coming out of the computer room can directly or indirectly exchange heat with the ambient air, so that there is no need to turn on the compressor to achieve the purpose of free cooling, which is generally called a natural cooling source or free cold source.
随着科技的进步，IT设备能够承受越来越高的温度，因此相应地冷冻水的温度也可以使用得更高，而且在数据中心，可以通过气流的有效组织，使得回风温度更高，回风温度的升高也可以提升冷冻水，从而提高自然冷源的利用时间。 With the advancement of technology, IT equipment can withstand higher and higher temperatures, so the temperature of chilled water can be used correspondingly higher, and in the data center, the effective organization of airflow can make the return air temperature higher, The increase in the return air temperature can also increase the chilled water, thereby increasing the utilization time of the natural cooling source.
当前传统自然冷源利用技术中，一般集中在螺杆式或涡旋式压缩制冷系统，因为使用风冷的冷水机组，从结构上和换热机理上更有利于自然冷源的利用，系统也会更为简单，因此风冷机组使用自然冷源更为广泛。 The current traditional natural cooling source utilization technology generally focuses on screw or scroll compression refrigeration systems, because the use of air-cooled chillers is more conducive to the utilization of natural cooling sources in terms of structure and heat transfer mechanism, and the system will also It is simpler, so the natural cooling source is more widely used in air-cooled units.
但是，统离心机组由于各种原因（无二级接口，吸气带液，容量较大无法应用在风冷机组等），不能采用多级过冷装置，基本采用冷凝器过冷方式，只能采用冷凝器排布大量冷凝管对冷媒进行过冷，为提高效果多充注部分冷媒，其过冷效果有限，只能在3-4度，目的只是在于克服管路阻力损失，无法真正用于提高制冷能力和能效方面。 However, due to various reasons (no secondary interface, suction with liquid, large capacity cannot be used in air-cooled units, etc.), multi-stage supercooling devices cannot be used, and the condenser supercooling method is basically used, which can only be used A large number of condensers are used to supercool the refrigerant. In order to improve the effect, more refrigerant is charged. The supercooling effect is limited, only at 3-4 degrees. The purpose is to overcome the loss of pipeline resistance and cannot be used for real Improve cooling capacity and energy efficiency.
传统的离心机组一般冷量比较多，受限于风冷冷凝器的尺寸原因，一般没有风冷离心冷水机组（或自然冷源冷水机组），并且传统离心机组一般不需要对直流变频控制器及电机进行冷却，因此对过冷度并没有严格要求。 Traditional centrifugal units generally have a large cooling capacity, and are limited by the size of the air-cooled condenser. Generally, there are no air-cooled centrifugal chillers (or natural cooling source chillers), and traditional centrifugal units generally do not require DC frequency conversion controllers and The motor is cooled, so there are no strict requirements on the degree of subcooling.
在控制冷凝温度的同时要提高过冷的办法，在现有换热技术的条件下，一般都是需要对应的加大换热盘管的面积，一般是需要加深排数，或者加大迎风面积，但是加深排数会加大换热器的成本，而加大迎风面积会使得机组的结构偏大，并且迎风面积的加大，也会降低迎面风速，从而空气侧换热也会有所弱化。 To improve the subcooling while controlling the condensing temperature, under the conditions of the existing heat exchange technology, it is generally necessary to increase the area of the heat exchange coil correspondingly, generally it is necessary to deepen the number of rows, or increase the windward area , but deepening the number of rows will increase the cost of the heat exchanger, and increasing the windward area will make the structure of the unit larger, and the increase in the windward area will also reduce the wind speed on the face, so that the heat transfer on the air side will also be weakened .
本实用新型的产品，由于有自然冷源的技术，为了提升机组的可靠性，适当的利用自然冷源盘管的部分换热盘管，从而保证在全年运行、部分负荷运行的条件下，机组都有较好的过冷度，进而提升产品的可靠性。 The product of this utility model, due to the technology of natural cold source, in order to improve the reliability of the unit, part of the heat exchange coil of the natural cold source coil is properly used, so as to ensure that under the condition of year-round operation and part-load operation, The unit has a better subcooling degree, thereby improving the reliability of the product.
发明内容 Contents of the invention
发明目的：针对上述现有存在的问题和不足，本实用新型的目的是提供一种应用于自然冷源磁悬浮系统的二次过冷装置，能利用多次过冷装置提高制冷剂的过冷度确保磁悬浮压缩机安全可靠运行，并降低运行成本。 Purpose of the invention: In view of the existing problems and deficiencies mentioned above, the purpose of this utility model is to provide a secondary subcooling device applied to a natural cold source magnetic levitation system, which can improve the supercooling degree of the refrigerant by using the multiple subcooling device Ensure the safe and reliable operation of the maglev compressor and reduce operating costs.
技术方案：为实现上述发明目的，本实用新型采用的技术方案为一种应用于自然冷源磁悬浮制冷系统的过冷装置，包括蒸发器、磁悬浮压缩机和一次过冷段；所述蒸发器出口与磁悬浮压缩机的吸气口连接； Technical solution: In order to achieve the purpose of the above invention, the technical solution adopted by the utility model is a supercooling device applied to a natural cooling source magnetic levitation refrigeration system, including an evaporator, a magnetic levitation compressor and a primary subcooling section; the outlet of the evaporator Connect with the suction port of the maglev compressor;
所述一次过冷段包括冷媒系统盘管和自然冷源盘管，所述自然冷源盘管中部分冷凝管作为一次过冷管，所述磁悬浮压缩机排气口依次与冷媒系统盘管和一次过冷管连通，所述自然冷源盘管剩余冷凝管用于制冷剂冷却； The primary subcooling section includes a refrigerant system coil and a natural cooling source coil. Part of the condensation pipe in the natural cooling source coil is used as a primary subcooling pipe. The exhaust port of the magnetic levitation compressor is connected with the refrigerant system coil and The primary subcooling pipe is connected, and the remaining condensation pipe of the natural cold source coil is used for refrigerant cooling;
所述一次过冷管的出液口通过管道与蒸发器的进口连接，且该管道上设有第一节流阀；同时一次过冷管的出液口设有支路，该支路与磁悬浮压缩机的电机的冷却进口连接。 The liquid outlet of the primary subcooling pipe is connected to the inlet of the evaporator through a pipeline, and the pipeline is provided with a first throttle valve; at the same time, the liquid outlet of the primary supercooling pipe is provided with a branch circuit, and the branch circuit is connected with the magnetic levitation Cooling inlet connection for the motor of the compressor.
进一步改进，本实用新型还包括二次过冷段，该二次过冷段为经济器，它包括进液口、出液口、气液进口和出气口；一次过冷段的出液口通过管道与经济器进液口连接；二次过冷段的出液口出来后分为第一支路和第二支路，第一支与蒸发器进口连接，且该支路上设有第一节流阀；第二支路设有第二节流阀，并与气液进口连接，所述经济器出气口通过管道与磁悬浮压缩机的吸气口连接。 As a further improvement, the utility model also includes a secondary subcooling section, which is an economizer, which includes a liquid inlet, a liquid outlet, a gas-liquid inlet, and a gas outlet; the liquid outlet of the primary subcooling section passes through The pipe is connected to the liquid inlet of the economizer; the liquid outlet of the secondary subcooling section is divided into the first branch and the second branch after it comes out, the first branch is connected to the inlet of the evaporator, and there is a first branch on the branch flow valve; the second branch is provided with a second throttle valve, which is connected to the gas-liquid inlet, and the gas outlet of the economizer is connected to the suction port of the magnetic levitation compressor through a pipeline.
进一步的，本装置设有多套并联的一次过冷段。 Further, the device is provided with multiple sets of parallel primary subcooling sections.
作为优选，所述第一节流阀和第二节流阀均采用电子膨胀阀。 Preferably, both the first throttle valve and the second throttle valve are electronic expansion valves.
进一步的，还包括自然冷源水系统，该自然冷源水系统包括两条支路，所述自然冷源盘管剩余冷凝管设在其中一条支路，且两条支路的汇合处设有三通阀，并与蒸发器的冷却通道连接。 Further, it also includes a natural cold source water system, the natural cold source water system includes two branches, the remaining condensation pipe of the natural cold source coil is set in one of the branches, and the confluence of the two branches is provided with three Through the valve, and connected with the cooling channel of the evaporator.
有益效果：与现有技术相比，本实用新型具有以下优点：另外，采用了简单可靠的结构通过在自然冷源磁悬浮制冷系统上应用，实现二次过冷的目的，获得比传统方法更高过冷度，提高单位冷媒制冷能力，减少冷媒充注量和换热器铜管使用量，提高机组能效，达到节能目的。另外本实用新型还具有以下特点：1、直流变频磁悬浮压缩机技术和自然冷源技术的结合应用；2、压缩机用在全年制冷工况下可靠地运行：通过液位控制，电机冷却设计，风机调速实现；3、变频压缩机和自然冷源的节能运行配合：通过合理的管路设计、盘管设计、逻辑切换控制技术和压缩机直流变频调节技术；4、磁悬浮机组的电机冷却应用：为保护压缩机电机，通过合理的管路设计，为压缩机提供液态制冷剂冷却电机。 Beneficial effects: Compared with the prior art, the utility model has the following advantages: In addition, the utility model adopts a simple and reliable structure and is applied to the natural cold source magnetic levitation refrigeration system to achieve the purpose of secondary supercooling, and obtain higher than the traditional method. The subcooling degree can improve the cooling capacity of the unit refrigerant, reduce the amount of refrigerant charge and the amount of copper tube used in the heat exchanger, improve the energy efficiency of the unit, and achieve the purpose of energy saving. In addition, the utility model also has the following characteristics: 1. Combined application of DC frequency conversion magnetic levitation compressor technology and natural cold source technology; 2. The compressor can be used for reliable operation under the year-round refrigeration conditions: through liquid level control, motor cooling design , Fan speed regulation is realized; 3. The energy-saving operation cooperation of frequency conversion compressor and natural cooling source: through reasonable pipeline design, coil design, logic switching control technology and compressor DC frequency conversion adjustment technology; 4. Motor cooling of maglev unit Application: In order to protect the compressor motor, through a reasonable pipeline design, the compressor is provided with liquid refrigerant to cool the motor.
附图说明 Description of drawings
图1为本实用新型实施例1所述二次过冷装置的系统原理示意图； Fig. 1 is a schematic diagram of the system principle of the secondary subcooling device described in Embodiment 1 of the present utility model;
图2为本实用新型实施例2所述二次过冷装置的结构示意图。 Fig. 2 is a schematic structural diagram of the secondary subcooling device described in Embodiment 2 of the present invention.
其中、磁悬浮压缩机1、自然冷源盘管2、冷媒系统盘管3、一次过冷管4、蒸发器5、经济器6、风机7、三通阀8、第一节流阀9、第二节流阀10。
Among them, maglev compressor 1, natural cold source coil 2, refrigerant system coil 3, primary subcooling pipe 4, evaporator 5,
具体实施方式 Detailed ways
下面结合附图和具体实施例，进一步阐明本实用新型，应理解这些实施例仅用于说明本实用新型而不用于限制本实用新型的范围，在阅读了本实用新型之后，本领域技术人员对本实用新型的各种等价形式的修改均落于本申请所附权利要求所限定的范围。 Below in conjunction with accompanying drawing and specific embodiment, further set forth the utility model, should be understood that these embodiments are only used for illustrating the utility model and are not intended to limit the scope of the utility model, after having read the utility model, those skilled in the art will understand this utility model The modifications of various equivalent forms of the utility model all fall within the scope defined by the appended claims of the present application.
实施例1 Example 1
如图1～2所示，一种应用于自然冷源磁悬浮制冷系统的过冷装置，包括蒸发器、磁悬浮压缩机、一次过冷段、二次过冷段和自然冷源水系统；所述蒸发器出口与磁悬浮压缩机的吸气口连接；所述一次过冷段包括冷媒系统盘管和自然冷源盘管，所述自然冷源盘管中部分冷凝管作为一次过冷管，所述磁悬浮压缩机排气口依次与冷媒系统盘管和一次过冷管连通，所述自然冷源盘管剩余冷凝管用于载冷剂冷却；所述一次过冷管的出液口通过管道依次与二次过冷段和蒸发器的进口连接；同时一次过冷管的出液口设有支路，并与磁悬浮压缩机的电机的冷却进口连接。而所述自然冷源水系统包括两条支路，所述自然冷源盘管剩余冷凝管设在其中一条支路，且两条支路的汇合处设有三通阀，并与蒸发器的冷却通道连接。 As shown in Figures 1 to 2, a subcooling device applied to a natural cold source maglev refrigeration system includes an evaporator, a magnetic levitation compressor, a primary subcooling section, a secondary subcooling section, and a natural cooling source water system; The outlet of the evaporator is connected to the suction port of the maglev compressor; the primary subcooling section includes a refrigerant system coil and a natural cooling source coil, and part of the condensation pipe in the natural cooling source coil is used as a primary subcooling pipe. The exhaust port of the magnetic levitation compressor is connected with the refrigerant system coil and the primary subcooling pipe in turn, and the remaining condensation pipe of the natural cold source coil is used for cooling the brine; the liquid outlet of the primary subcooling pipe is connected with the secondary subcooling pipe in sequence The secondary subcooling section is connected with the inlet of the evaporator; meanwhile, the liquid outlet of the primary subcooling pipe is provided with a branch circuit, and is connected with the cooling inlet of the motor of the magnetic levitation compressor. The natural cold source water system includes two branches, the remaining condensing pipe of the natural cold source coil is arranged in one of the branches, and a three-way valve is provided at the confluence of the two branches, and it is connected with the cooling of the evaporator. channel connection.
二次过冷段实际采用经济器实现，它包括进液口（F1）、出液口（F2）、气液进口(F3)和出气口(F4)；一次过冷段的出液口通过管道与经济器进液口连接，出液口出来后分为第一支路和第二支路，第一支路设有第一节流阀，并与蒸发器进口连接；第二支路设有第二节流阀，并与气液进口连接，所述经济器出气口通过管道与磁悬浮压缩机的吸气口连接。第一节流阀采用电子膨胀阀，第二节流阀采用ECO电子膨胀阀。 The secondary subcooling section is actually realized by an economizer, which includes a liquid inlet (F1), a liquid outlet (F2), a gas-liquid inlet (F3) and a gas outlet (F4); the liquid outlet of the primary subcooling section passes through the pipeline It is connected with the liquid inlet of the economizer, and after the liquid outlet comes out, it is divided into the first branch and the second branch. The first branch is provided with a first throttle valve and connected with the inlet of the evaporator; the second branch is provided The second throttle valve is connected to the gas-liquid inlet, and the gas outlet of the economizer is connected to the suction port of the magnetic levitation compressor through a pipeline. The first throttle valve adopts an electronic expansion valve, and the second throttle valve adopts an ECO electronic expansion valve.
上述技术方案中冷媒系统盘管和自然冷源盘管实际上都是相同的翅管式冷凝器，并共用风机。如图1所示，包含4套并联的一次过冷段，其中每套一次过冷段中冷媒系统盘管和自然冷源盘管中均含有3×50根冷凝管，本实用新型将原属于自然冷源盘管中的3×6根冷凝管通过管道改变，使其与冷媒系统盘管的冷凝管连接，从而提高制冷剂的过冷度，并确保进入到磁悬浮压缩机的变频电机冷却进口的制冷剂始终为液体，从而确保磁悬浮压缩机的可靠稳定的工作。因此，本实用新型在冷媒系统盘管之外的自然冷源盘管下部设置一次独立的过冷管区，在膨胀阀节流前再设置一次过冷器，以降低冷凝温度，达到增加单位冷媒制冷能力，减少冷媒充注量和材料消耗，获得更高的能效和制冷能力 In the above technical solution, the refrigerant system coil and the natural cooling source coil are actually the same fin-tube condenser and share a fan. As shown in Figure 1, it includes 4 sets of primary subcooling sections connected in parallel, wherein each set of primary subcooling section contains 3×50 condenser tubes in the refrigerant system coil and the natural cooling source coil. The 3×6 condensing pipes in the natural cooling source coil are changed through pipes to connect them with the condensing pipes of the refrigerant system coil, thereby improving the subcooling degree of the refrigerant and ensuring that it enters the cooling inlet of the frequency conversion motor of the magnetic levitation compressor The refrigerant is always liquid, thus ensuring the reliable and stable work of the maglev compressor. Therefore, the utility model sets up an independent subcooling pipe area at the lower part of the natural cold source coil outside the refrigerant system coil, and then sets up a subcooler before the expansion valve throttling, so as to reduce the condensing temperature and increase the cooling capacity of the unit refrigerant. capacity, reduce refrigerant charge and material consumption, and obtain higher energy efficiency and refrigeration capacity
另外，本实用新型提出的自然冷源冷磁悬浮制冷系统，有三种工作模式： In addition, the natural cold source cooling magnetic levitation refrigeration system proposed by the utility model has three working modes:
（1）纯压缩机工作模式：当室外温度比回水温度高时，无自然冷源可以利用，此时机组工作在纯压缩机的模式下，由压缩机提供全部的制冷量；该模式下可以牺牲部分冷量，调节三通阀控制小部分回水通过自然冷源盘管剩余3×44根冷凝管，此时风机产生的迎风通过这3×44根冷凝管的风道会有降温，从而降低冷媒系统盘管的进风温度，进而降低了冷凝压力，通过这种技术的应用，可以将风冷磁悬浮可靠的运用在各种环境工况下。 (1) Pure compressor working mode: When the outdoor temperature is higher than the return water temperature, there is no natural cooling source to use. At this time, the unit works in the pure compressor mode, and the compressor provides all the cooling capacity; in this mode Part of the cooling capacity can be sacrificed, and the three-way valve can be adjusted to control a small part of the return water to pass through the remaining 3×44 condensing pipes of the natural cooling source coil. At this time, the wind generated by the fan will cool down through the air duct of the 3×44 condensing pipes. Thereby reducing the inlet air temperature of the refrigerant system coil, thereby reducing the condensation pressure. Through the application of this technology, the air-cooled magnetic levitation can be reliably used in various environmental conditions.
（2）压缩机+自然冷源配合运行模式：当室外温度低于回水温度时，但是室外温度并没有足够低，一直自然冷源提供的冷量不足；回水先流经室外的自然冷源盘管剩余的3×44根冷凝管，经和室外换热之后再流经蒸发器的冷凝通道， 由直流变频压缩机补充不足的部分冷量，由于直流变频压缩机是无级调载的，因此可以实现和自然冷源的无缝对接，直流变频压缩机在部分负荷下的高效特点以及免费自然冷源的利用，使得机组的效率非常高； (2) Compressor + natural cooling source combined operation mode: when the outdoor temperature is lower than the return water temperature, but the outdoor temperature is not low enough, the cooling capacity provided by the natural cooling source is insufficient; the return water flows through the outdoor natural cooling source first The remaining 3×44 condensing pipes in the coil flow through the condensing channel of the evaporator after exchanging heat with the outdoors, and the insufficient part of the cooling capacity is supplemented by the DC inverter compressor. Since the DC inverter compressor is steplessly loaded, Therefore, the seamless connection with the natural cooling source can be realized, the high-efficiency characteristics of the DC inverter compressor under partial load and the utilization of free natural cooling source make the efficiency of the unit very high;
（3）纯自然冷源模式：当室外温度足够低时，自然冷源的冷量已经很充足，压缩机无需开启，全部由自然冷源提供冷量，机组运行非常高效的模式下。 (3) Pure natural cooling source mode: When the outdoor temperature is low enough, the cooling capacity of the natural cooling source is already sufficient, the compressor does not need to be turned on, and all the cooling capacity is provided by the natural cooling source, and the unit operates in a very efficient mode.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206814A (en) * | 2013-04-12 | 2013-07-17 | 南京佳力图空调机电有限公司 | Supercooling device for magnetic suspension refrigerating system with natural cold source |
| CN108444122A (en) * | 2018-02-09 | 2018-08-24 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN115183483A (en) * | 2022-08-02 | 2022-10-14 | 鹏鸟科技(山东)有限公司 | Water-cooling centrifugal phase-change refrigeration equipment with natural cold source |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206814A (en) * | 2013-04-12 | 2013-07-17 | 南京佳力图空调机电有限公司 | Supercooling device for magnetic suspension refrigerating system with natural cold source |
| CN103206814B (en) * | 2013-04-12 | 2015-12-23 | 南京佳力图空调机电有限公司 | A kind of supercooling apparatus being applied to natural cooling source magnetic suspension refrigeration system |
| CN108444122A (en) * | 2018-02-09 | 2018-08-24 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2019153881A1 (en) * | 2018-02-09 | 2019-08-15 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN115183483A (en) * | 2022-08-02 | 2022-10-14 | 鹏鸟科技(山东)有限公司 | Water-cooling centrifugal phase-change refrigeration equipment with natural cold source |
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Address after: 211111 Jiangning economic and Technological Development Zone, Jiangsu, Jiangsu Province, the source of the road, No. 88, No. Patentee after: NANJING CANATAL DATA-CENTRE ENVIRONMENTAL TECH. Co.,Ltd. Address before: 211102 Jiangning economic and Technological Development Zone, Jiangsu, Meilin street, No. 83, No. Patentee before: NANJING CANATAL DATA-CENTRE ENVIRONMENTAL TECH Co.,Ltd. |
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