Tower cooling magnetic suspension multi-connected pumping refrigeration system

Abstract

The invention discloses a tower cooling magnetic suspension multi-connected pumping refrigerating system which comprises a magnetic suspension compressor, a condenser, a refrigerant pump, evaporators and an equalizer which are connected, and the refrigerant pump is used for pumping refrigerants from the condenser to the multiple evaporators. Refrigerating fluid which is from the multiple evaporators and absorbs heat of the data center is compressed by the magnetic suspension compressor and then conveyed to the condenser, a first flow valve is arranged between the refrigerating fluid pump and the evaporators, and a second flow valve is arranged between every two adjacent evaporators. By adjusting the opening degree of the first flow valve and the opening degree of the second flow valve, refrigerants at the inlets of the evaporators with more refrigerants are compensated into the evaporators with less refrigerants, so that each evaporator can correspond to one load condition, and the requirement for multi-load operation of the system is met. The equalizer is used for promoting gasification of the liquid refrigerant and improving the consistency of the gasification degree, and the stability of the compressor is improved. Waste heat of the condenser is used as a heat source of the equalizer, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the field of infrastructure and IT support technology, and in particular to a tower-cooled magnetic suspension multi-connected pumping refrigeration system. Background Art

[0002] Data centers are one of the important infrastructures of modern communication networks and are a high-density energy-consuming industry. A large number of servers, storage devices, switches, and hundreds of billions of chips consume a lot of energy during operation, which generates a lot of heat. As a result, the energy consumption of cooling accounts for more than 60% of the energy consumption of auxiliary facilities.

[0003] In data centers with related technologies, the cooling system is mainly composed of chilled water system and air-cooled direct expansion system (i.e. air conditioning refrigeration system). The chilled water system is complex to control, large in scale, and has low efficiency under low load, so it is difficult for the actual operating efficiency to reach the expected value; although the air-cooled direct expansion system is simple to control and can support distributed deployment, it has a low energy consumption ratio, which is contrary to the development direction of green data centers. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] There are four problems with the cooling system in the related technology. The first is adaptability. The load of the data center increases gradually, but the cooling system has the same cooling effect on each point in the data center. It can only be adjusted as a whole, not locally, which makes it difficult for the cooling system to adapt to green and efficient operation under various load conditions. The second is compatibility. The cooling system is large in scale, which makes the cooling system incompatible with the energy-saving transformation of old data centers and the rapid deployment of new data centers. The third is energy efficiency. The cooling system is not adjusted according to the actual operating conditions, and the actual operating energy efficiency ratio of the cooling technology is low. The fourth is the reliability of the data center. The heat dissipation and cooling of the refrigeration equipment affect each other, resulting in the cooling effect cannot be guaranteed.

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, an embodiment of the present invention proposes a tower-cooled magnetically suspended multi-connected pumping refrigeration system, which has the characteristics of strong adaptability, high compatibility, low energy consumption and high reliability.

[0008] The tower-cooled magnetic suspension multi-connected pumping refrigeration system of the embodiment of the present invention comprises:

[0009] A magnetic levitation compressor, a condenser, a refrigerant pump and an evaporator, wherein the magnetic levitation compressor, the condenser, the refrigerant pump and the evaporator are sequentially connected via pipelines, there are multiple evaporators and they are connected to each other via pipelines, and the multiple evaporators are respectively and correspondingly arranged at various cooling points in the data center, and the refrigerant pump is used to pump the refrigerant from the condenser to the multiple evaporators, and the refrigerant from the multiple evaporators that has absorbed the heat of the data center is compressed by the magnetic levitation compressor and then transported to the condenser, and a first flow valve is respectively arranged on the inlet pipeline between the refrigerant pump and each of the evaporators, and a second flow valve is arranged on the connecting pipeline between the adjacent evaporators on the inlet side of the first flow valve, and the amount of refrigerant transported to each of the evaporators by the refrigerant pump is controlled by adjusting the opening of the first flow valve and the second flow valve;

[0010] An equalizer, wherein the refrigerant inlet of the equalizer is connected to a plurality of the evaporators so that the refrigerants flowing out of the plurality of the evaporators are collected in the equalizer, the equalizer is connected to the refrigerant inlet of the magnetic levitation compressor and the refrigerant inlet of the condenser so that the refrigerant flowing out of the equalizer can selectively enter at least one of the magnetic levitation compressor and the condenser, and the equalizer is connected to the condenser to heat the refrigerant in the equalizer using the heat released after heat exchange with the refrigerant in the condenser.

[0011] Therefore, the tower-cooled magnetically suspended multi-connected pumping refrigeration system of the embodiment of the present invention adjusts the opening of the first flow valve and the second flow valve to allow the refrigerant at the inlet of the evaporator with more refrigerant to be compensated to the evaporator with less refrigerant, so that each evaporator can correspond to a load condition, thereby satisfying the operation of the system under multiple load conditions.

[0012] In addition, by setting up an equalizer, the liquid refrigerant is promoted to gasify and the consistency of the gasification degree is improved, thereby improving the stability of the operation of the magnetic levitation compressor. In addition, the heat released by the refrigerant in the condenser after heat exchange is used as the heat source of the equalizer to improve energy utilization and reduce overall energy consumption.

[0013] In some embodiments, a thermometer is provided on the outlet pipe of the evaporator, and the thermometer is used to detect the temperature of the refrigerant flowing out of each evaporator, and the opening of the corresponding first flow valve and the second flow valve is adjusted according to the temperature detected by the thermometer.

[0014] In some embodiments, a deliquidator is provided in the equalizer, and the deliquidator is used to filter the refrigerant that is heated in the equalizer and then transported to the magnetic levitation compressor.

[0015] In some embodiments, the condenser has a connected heat exchange chamber and a heat dissipation chamber, and the heat exchange chamber is provided with a spray part and a heat exchange part. The spray part is used to spray cooling water onto the heat exchange part. The condenser is provided with an air inlet connected to the heat exchange chamber and an air outlet connected to the heat dissipation chamber. The heat dissipation chamber is provided with an air inlet, and the air inlet is used to guide the air in the external environment to enter the heat exchange chamber through the air inlet, so that the refrigerant flowing into the condenser is cooled by heat exchange with cooling water and a part of air in the heat exchange part, and the cooling water after heat exchange is cooled by heat exchange with another part of air and then flows back to the spray part, and the air after heat exchange in the heat exchange chamber flows into the heat dissipation chamber and is discharged from the condenser through the air outlet.

[0016] In some embodiments, the air outlet of the condenser is connected to the equalizer via a pipeline so as to utilize the heat in the heat-exchanged air discharged from the condenser to heat the refrigerant in the equalizer.

[0017] In some embodiments, the heat exchange chamber and the heat dissipation chamber are arranged in parallel, the spray element and the heat exchange element are both located in the upper part of the heat exchange chamber, and the spray element is located above the heat exchange element, the air inlet of the condenser includes a first air inlet and a second air inlet, the first air inlet and the air outlet are both arranged on the top wall of the upper part of the condenser, and the second air inlet is arranged on the side wall of the lower part of the condenser, the air flowing into the heat exchange chamber through the first air inlet is used for heat exchange with the refrigerant, and the air flowing into the heat exchange chamber through the second air inlet is used for heat exchange with cooling water.

[0018] In some embodiments, a filler is provided in the heat exchange cavity, and the filler is located below the heat exchange element, so that cooling water in the filler exchanges heat with air flowing into the heat exchange cavity through the second air inlet.

[0019] In some embodiments, a refrigerant inlet and a refrigerant outlet are provided on the side wall of the condenser, and the heat exchange component includes a distribution main pipe, a drain main pipe, and a plurality of heat exchange plates provided between the distribution main pipe and the drain main pipe. The distribution main pipe is connected to the refrigerant inlet, the drain main pipe is connected to the refrigerant outlet, and a heat exchange channel is defined between two adjacent heat exchange plates. The distribution main pipe is provided with a plurality of distribution ports, and the plurality of distribution ports correspond one-to-one to and are connected with the plurality of heat exchange channels. The plurality of distribution ports gradually increase in size in the direction away from the refrigerant inlet. The drain main pipe is provided with a plurality of liquid return ports, and the plurality of liquid return ports correspond one-to-one to and are connected with the plurality of heat exchange channels.

[0020] In some embodiments, the distance between two adjacent distribution ports is defined as W, the cross-sectional area of ​​the distribution main pipe is defined as A, and the relationship is satisfied: A / 30<W<A / 20.

[0021] In some embodiments, the refrigeration system has a first mode, a second mode, and a third mode;

[0022] In the first mode, the ambient temperature of the condenser is higher than a preset range value, and all the refrigerant in the equalizer flows to the magnetic levitation compressor for compression, and the compressed refrigerant flows to the condenser;

[0023] In the second mode, the ambient temperature of the condenser is lower than a preset range value, and all the refrigerant in the equalizer flows directly to the condenser;

[0024] In the third mode, the ambient temperature of the condenser is within a preset range, a portion of the refrigerant in the equalizer flows to the magnetic levitation compressor, and another portion flows to the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a tower-cooled magnetically suspended multi-connected pumping refrigeration system according to an embodiment of the present invention.

[0026] Figure 2 Schematic diagram of a condenser according to an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of a heat exchange element according to an embodiment of the present invention.

[0028] Figure 4 Schematic diagram of a dispensing port according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1-magnetic levitation compressor, 2-condenser, 21-spraying element, 22-heat exchange element, 221-distribution main pipe, 222-drainage main pipe, 223-heat exchange plate, 224-distribution port, 23-draft induced element, 24-filler, 201-heat exchange chamber, 202-heat dissipation chamber, 3-refrigerant pump, 4-evaporator, 5-first flow valve, 6-second flow valve, 7-equalizer, 71-deliquidator, 8-thermometer. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] The tower-cooled magnetic suspension multi-connected pumping refrigeration system of an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0033] like Figure 1As shown, the tower-cooled magnetic suspension multi-connected pumping refrigeration system of an embodiment of the present invention includes: a magnetic suspension compressor 1, a condenser 2, a refrigerant pump 3, an evaporator 4 and an equalizer 7.

[0034] Among them, the evaporator 4 is the indoor side equipment of the refrigeration system, and the magnetic levitation compressor 1, the condenser 2 and the refrigerant pump 3 are the outdoor side equipment of the refrigeration system. The magnetic levitation compressor 1, the condenser 2, the refrigerant pump 3 and the evaporator 4 are connected in sequence through pipelines to form a circulating cooling loop. There are multiple evaporators 4, and adjacent evaporators 4 are connected through pipelines. Multiple evaporators 4 are respectively arranged at various cooling points in the data center.

[0035] The refrigerant pump 3 is used to pump the refrigerant from the condenser 2 into the multiple evaporators 4 respectively, so as to use the refrigerant to cool down the data center. The refrigerant from the multiple evaporators 4 that has absorbed the heat of the data center is compressed by the magnetic levitation compressor 1 and then transported to the condenser 2.

[0036] The refrigerant pump 3 is selected according to the type of refrigerant. For example, if the refrigerant is Freon, the refrigerant pump 3 is a fluorine pump. The magnetic levitation compressor 1 makes the whole system free of lubricating oil, and the whole system is pure refrigerant, which is more efficient and suitable for large refrigeration capacity requirements.

[0037] A first flow valve 5 is provided on the inlet pipeline between the refrigerant pump 3 and each evaporator 4, and a second flow valve 6 is provided on the connecting pipeline between adjacent evaporators 4 on the inlet side of the first flow valve 5. The opening degree of the first flow valve 5 and the second flow valve 6 is adjusted to control the amount of refrigerant delivered to each evaporator 4 by the refrigerant pump 3.

[0038] It can be understood that the first flow valve 5 is used to control the amount of refrigerant flowing into the evaporator 4, and the second flow valve 6 is used to control the amount of refrigerant flowing into other evaporators 4. According to the load requirements at different points of the data center, by adjusting the opening of the first flow valve 5 and the second flow valve 6, the refrigerant at the inlet of the evaporator 4 with more refrigerant is compensated to the evaporator 4 with less refrigerant, so that each evaporator 4 can correspond to a load condition, thereby satisfying the system to adapt to various load conditions.

[0039] The refrigerant inlet of the equalizer 7 is connected to multiple evaporators 4, so that the refrigerants flowing out of the multiple evaporators 4 are collected in the equalizer 7 for mixed heating. Since each evaporator 4 corresponds to different load conditions, the vaporization degree of the refrigerant flowing out of the evaporator 4 is different. Therefore, by setting the equalizer 7, the vaporization of the liquid refrigerant is promoted and the consistency of the vaporization degree is improved, so as to facilitate the subsequent treatment of the refrigerant.

[0040] The equalizer 7 is connected to the refrigerant inlet of the magnetic levitation compressor 1 and the refrigerant inlet of the condenser 2 , so that the refrigerant flowing out of the equalizer 7 can selectively enter at least one of the magnetic levitation compressor 1 and the condenser 2 .

[0041] It is understandable that, according to the outdoor ambient temperature, it is selected whether the refrigerant flowing out of the equalizer 7 flows into the magnetic levitation compressor 1 first and then into the condenser 2, or flows directly into the condenser 2, or flows into the magnetic levitation compressor 1 first and then into the condenser 2, and flows into the condenser 2 directly. In this way, not only the refrigeration system can adapt to the operation in different environments and improve the compatibility of the system, but also the refrigeration system can adapt to the operation in different seasons, achieve the purpose of energy saving, and thus solve the problem of high energy consumption of refrigeration technology in related technologies throughout the year.

[0042] Optionally, the tower-cooled magnetically suspended multi-connected pumping refrigeration system of the embodiment of the present invention has a first mode, a second mode and a third mode.

[0043] When the ambient temperature of the condenser 2 is higher than the preset range, for example, in summer or in hot areas, the refrigeration system operates in the first mode. Due to the high ambient temperature, the condensation of the refrigerant cannot be satisfied, and the refrigerant in the equalizer 7 flows to the magnetic levitation compressor 1 for compression first, and the compressed refrigerant flows to the condenser 2 for condensation.

[0044] When the ambient temperature of the condenser 2 is lower than the preset range, for example, in winter or in cold regions, the refrigeration system operates in the second mode. Since the ambient temperature is low and can meet the condensation of the refrigerant, all the refrigerant in the equalizer 7 flows directly to the condenser 2 for condensation.

[0045] When the ambient temperature of the condenser 2 is within the preset range, for example, in spring and autumn or in areas with normal temperature, the refrigeration system operates in the third mode. At this time, the ambient temperature is normal. If condensation is performed only by the ambient temperature, the condensation effect is not good. If all of it is compressed by the magnetic levitation compressor 1, it will lead to excessive energy consumption. Therefore, part of the refrigerant in the equalizer 7 flows to the magnetic levitation compressor 1 for compression, and the other part flows directly to the condenser 2. The two parts of the refrigerant are neutralized, thereby ensuring the condensation effect while achieving the purpose of energy saving.

[0046] Furthermore, the equalizer 7 is connected to the condenser 2, so as to utilize the heat released by the refrigerant in the condenser 2 after heat exchange to heat the refrigerant in the equalizer 7. That is, the heat released by the refrigerant in the condenser 2 after heat exchange is utilized as the heat source of the equalizer 7, thereby improving energy utilization and reducing overall energy consumption.

[0047] In some embodiments, Figure 1As shown, a thermometer 8 is provided on the outlet pipeline of the evaporator 4, and the thermometer 8 is used to detect the temperature of the refrigerant flowing out of each evaporator 4, and the opening of the corresponding first flow valve 5 and the second flow valve 6 is adjusted according to the temperature detected by the thermometer 8.

[0048] It is understandable that the refrigerant flows into the evaporator 4 to remove the heat generated by the operation of the data center, so that the data center is kept at a constant temperature. That is, the temperature of the refrigerant flowing out of each evaporator 4 is within a specified range.

[0049] When the temperature of the refrigerant flowing out of the evaporator 4 detected by the thermometer 8 is higher than the specified range, the opening of the corresponding first flow valve 5 is increased, and the opening of the corresponding second flow valve 6 is reduced, so that the amount of refrigerant flowing into the evaporator 4 is increased, and the amount of refrigerant flowing from the evaporator 4 to other evaporators 4 is reduced. Alternatively, the opening of the corresponding second flow valve 6 is increased at the same time, so that the amount of refrigerant flowing from other evaporators 4 to the evaporator 4 is increased.

[0050] On the contrary, when the temperature of the refrigerant flowing out of the evaporator 4 detected by the thermometer 8 is lower than the specified range, the opening of the corresponding first flow valve 5 is reduced, and the opening of the corresponding second flow valve 6 is increased, so that the amount of refrigerant flowing into the evaporator 4 is reduced, and the amount of refrigerant flowing from the evaporator 4 to other evaporators 4 is increased. Alternatively, the opening of the corresponding second flow valve 6 is reduced at the same time, so that the amount of refrigerant flowing from other evaporators 4 to the evaporator 4 is reduced.

[0051] Therefore, according to the actual operating conditions of each point in the data center, real-time monitoring is performed through the thermometer 8, and the opening of the first flow valve 5 and the second flow valve 6 corresponding to each evaporator 4 is reasonably adjusted to ensure the effectiveness of energy saving.

[0052] In some embodiments, Figure 1 As shown, a deliquidator 71 is provided in the equalizer 7 , and the deliquidator 71 is used to filter the refrigerant heated in the equalizer 7 and then transported to the magnetic levitation compressor 1 .

[0053] Therefore, the liquid refrigerant is filtered by the deliquidator 71, thereby reducing the risk of liquid refrigerant entering the compressor and causing liquid hammer, which affects system operation and compressor life.

[0054] In some embodiments, Figure 1 and Figure 2 As shown, the condenser 2 has a heat exchange chamber 201 and a heat dissipation chamber 202 which are connected.

[0055] The heat exchange chamber 201 is provided with a spraying member 21 and a heat exchange member 22. The spraying member 21 is used to spray cooling water to the heat exchange member 22. The condenser 2 is provided with an air inlet connected to the heat exchange chamber 201 and an air outlet connected to the heat dissipation chamber 202. The heat dissipation chamber 202 is provided with an air induction member 23, which is used to guide the air in the external environment to enter the heat exchange chamber 201 through the air inlet.

[0056] The refrigerant flowing into the condenser 2 exchanges heat and cools down with the cooling water and a part of the air entering the heat exchange chamber 201 in the heat exchange element 22. After the refrigerant condenses in the heat exchange element 22, it is pumped back to the evaporator 4 through the refrigerant pump 3. The cooling water after heat exchange is cooled down with another part of the air entering the heat exchange chamber 201, and then flows back to the spray element 21 for recycling. The air after heat exchange in the heat exchange chamber 201 flows into the heat dissipation chamber 202 and is discharged from the condenser 2 through the air outlet.

[0057] Thus, the refrigerant is cooled by both air cooling and water cooling in the condenser 2, thereby improving the heat exchange effect. In addition, the wind can diffuse the sprayed water, accelerate the evaporation of the water, further improve the heat exchange effect, and thus reduce energy consumption.

[0058] In some embodiments, Figure 1 and Figure 2 As shown, the air outlet of the condenser 2 is connected to the equalizer 7 via a pipeline, so that the heat in the air after heat exchange discharged from the condenser 2 is used as a heat source of the equalizer 7, thereby heating the refrigerant in the equalizer 7.

[0059] It should be noted that there are two waste heats in the condenser 2, one in the spray water after heat exchange, and the other in the wind flow discharged from the air outlet. In order to reduce the complexity of the structure, the waste heat in the wind flow is selected as the heat source of the equalizer 7. After the waste heat is utilized, it can be directly discharged from the equalizer 7 to the external environment.

[0060] In addition, since the condenser 2 directly introduces wind flow from the external environment on the side, if the air outlet of the condenser 2 directly discharges the wind flow after heat exchange in the heat dissipation cavity 202, it will cause the ambient temperature around the condenser 2 to rise, affecting the condensation effect of the condenser 2. However, the wind flow discharged from the condenser 2 is led to the equalizer 7 at a certain distance and then discharged after use, thereby avoiding the impact on the condenser 2.

[0061] In some embodiments, Figure 2 As shown, the heat exchange chamber 201 and the heat dissipation chamber 202 are arranged in parallel, the spraying element 21 and the heat exchange element 22 are both located at the upper part of the heat exchange chamber 201, and the spraying element 21 is located above the heat exchange element 22. The air inlet of the condenser 2 includes a first air inlet and a second air inlet, the first air inlet and the air outlet are both arranged on the top wall of the upper part of the condenser 2, and the second air inlet is arranged on the side wall of the lower part of the condenser 2.

[0062] It is understandable that the cold air entering the heat exchange chamber 201 from the first air inlet flows downward through the heat exchange element 22 together with the sprayed cooling water to condense the refrigerant in the heat exchange element 22. The cold air entering the heat exchange chamber 201 from the second air inlet is used to cool the cooling water passing through the heat exchange element 22.

[0063] Therefore, in the spatial layout inside the condenser 2, an induced draft fan is arranged on one side of the heat exchange element 22 to extract the hot air after heat exchange. Compared with the related art in which the fan is arranged above the heat exchange structure and affects the heat exchange effect, the present invention, through structural changes, does not allow the hot air after heat exchange to affect the heat exchange in the heat exchange chamber 201, thereby improving the heat exchange effect and reducing energy consumption.

[0064] Furthermore, if Figure 2 As shown, a filler 24 is provided in the heat exchange chamber 201, and the filler 24 is located below the heat exchange element 22, so that cooling water falls into the filler 24, and the cold air flowing into the heat exchange chamber 201 through the second air inlet on the side is used for heat exchange and cooling, thereby improving the heat exchange effect.

[0065] Alternatively, if Figures 2 to 4 As shown, a refrigerant inlet and a refrigerant outlet are provided on the side wall of the condenser 2. The heat exchange element 22 includes a distribution main pipe 221, a drainage main pipe 222, and a plurality of heat exchange plates 223 provided between the distribution main pipe 221 and the drainage main pipe 222. The distribution main pipe 221 is connected to the refrigerant inlet, the drainage main pipe 222 is connected to the refrigerant outlet, and a heat exchange channel is defined between two adjacent heat exchange plates 223. The distribution main pipe 221 is provided with a plurality of distribution ports 224, which correspond to and are connected with the plurality of heat exchange channels one by one, and the plurality of distribution ports 224 gradually increase in size in the direction away from the refrigerant inlet. The drainage main pipe 222 is provided with a plurality of liquid return ports, which correspond to and are connected with the plurality of heat exchange channels one by one.

[0066] In other words, the present invention adopts a plate-type evaporative condenser 2, which has a higher heat exchange efficiency under the same volume, a smaller volume under the same heat exchange efficiency, and can be more flexibly applied to various building installations.

[0067] It is understandable that after the refrigerant enters the distribution main pipe 221, it is distributed to each heat exchange channel through the distribution port 224. Since the uniformity of the refrigerant distributed to each heat exchange channel affects the heat exchange effect, each distribution port 224 is at a different distance from the refrigerant inlet. Therefore, the area of ​​the distribution port 224 is designed to gradually increase in the direction away from the refrigerant inlet, that is, the farther away from the refrigerant inlet, the larger the area of ​​the distribution port 224, thereby improving the uniformity of the refrigerant distributed to each heat exchange channel, thereby improving the heat exchange effect.

[0068] Furthermore, the heat exchange plates 223 may be tilted, or the heat exchange plates 223 may be corrugated plates, folded plates, etc., so as to increase the residence time of the refrigerant in the heat exchange channel and further improve the heat exchange effect.

[0069] Therefore, by optimizing the spatial layout within the condenser 2, adding filler 24, optimizing the distribution port 224 and the structure of the heat exchange plate 223, a better condensation effect is achieved than the condenser 2 in the related art, making it smaller in size with the same heat exchange efficiency, and more flexibly suitable for installation in various buildings, especially suitable for renovation plans of old data centers with smaller spaces.

[0070] In some embodiments, the distance between two adjacent distribution ports 224 is defined as W, and the cross-sectional area of ​​the distribution main pipe 221 is defined as A, and the relationship is satisfied: A / 30<W<A / 20.

[0071] It is understandable that the relationship between the distribution ports 224 and the distribution main pipe 221 is established to avoid the problem that the distribution ports 224 are too dense, resulting in reduced strength of the distribution main pipe 221, thereby ensuring the rationality of the modified structure.

[0072] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0076] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0077] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A tower-cooled magnetic suspension multi-connected pumping refrigeration system, characterized in that: include: A magnetic levitation compressor, a condenser, a refrigerant pump and an evaporator, wherein the magnetic levitation compressor, the condenser, the refrigerant pump and the evaporator are sequentially connected via pipelines, there are multiple evaporators and they are connected to each other via pipelines, and the multiple evaporators are respectively and correspondingly arranged at various cooling points in the data center, and the refrigerant pump is used to pump the refrigerant from the condenser to the multiple evaporators, and the refrigerant from the multiple evaporators that has absorbed the heat of the data center is compressed by the magnetic levitation compressor and then transported to the condenser, and a first flow valve is respectively arranged on the inlet pipeline between the refrigerant pump and each of the evaporators, and a second flow valve is arranged on the connecting pipeline between the adjacent evaporators on the inlet side of the first flow valve, and the amount of refrigerant transported to each of the evaporators by the refrigerant pump is controlled by adjusting the opening of the first flow valve and the second flow valve; An equalizer, wherein the refrigerant inlet of the equalizer is connected to a plurality of the evaporators so that the refrigerants flowing out of the plurality of the evaporators are collected in the equalizer, the equalizer is connected to the refrigerant inlet of the magnetic levitation compressor and the refrigerant inlet of the condenser so that the refrigerant flowing out of the equalizer can selectively enter at least one of the magnetic levitation compressor and the condenser, and the equalizer is connected to the condenser to heat the refrigerant in the equalizer using the heat released after heat exchange with the refrigerant in the condenser.

2. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 1 is characterized in that: A thermometer is provided on the outlet pipeline of the evaporator, and the thermometer is used to detect the temperature of the refrigerant flowing out of each evaporator, and the opening of the corresponding first flow valve and the second flow valve is adjusted according to the temperature detected by the thermometer.

3. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 1 is characterized in that: The equalizer is provided with a deliquidator, and the deliquidator is used to filter the refrigerant heated in the equalizer and then transported to the magnetic levitation compressor.

4. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 1 is characterized in that: The condenser comprises a heat exchange chamber and a heat dissipation chamber which are connected. A spraying member and a heat exchange member are arranged in the heat exchange chamber. The spraying member is used to spray cooling water onto the heat exchange member. An air inlet connected to the heat exchange chamber and an air outlet connected to the heat dissipation chamber are arranged on the condenser. An air inlet connected to the heat exchange chamber and an air outlet connected to the heat dissipation chamber are arranged in the heat dissipation chamber. An air induction member is arranged in the heat dissipation chamber. The air induction member is used to guide air in the external environment to enter the heat exchange chamber through the air inlet, so that the refrigerant flowing into the condenser is cooled by heat exchange with cooling water and a part of air in the heat exchange member. The cooling water after heat exchange is cooled by heat exchange with another part of air and then flows back to the spraying member. The air after heat exchange in the heat exchange chamber flows into the heat dissipation chamber and is discharged from the condenser through the air outlet.

5. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 4 is characterized in that: The air outlet of the condenser is connected to the equalizer via a pipeline, so as to heat the refrigerant in the equalizer by utilizing the heat in the heat-exchanged air discharged from the condenser.

6. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 4 is characterized in that: The heat exchange chamber and the heat dissipation chamber are arranged in parallel, the spray element and the heat exchange element are both located in the upper part of the heat exchange chamber, and the spray element is located above the heat exchange element, the air inlet of the condenser includes a first air inlet and a second air inlet, the first air inlet and the air outlet are both arranged on the top wall of the upper part of the condenser, and the second air inlet is arranged on the side wall of the lower part of the condenser, the air flowing into the heat exchange chamber through the first air inlet is used for heat exchange with the refrigerant, and the air flowing into the heat exchange chamber through the second air inlet is used for heat exchange with cooling water.

7. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 6 is characterized in that: A filler is provided in the heat exchange cavity, and the filler is located below the heat exchange element, so that cooling water in the filler exchanges heat with air flowing into the heat exchange cavity through the second air inlet.

8. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 6, characterized in that: A refrigerant inlet and a refrigerant outlet are provided on the side wall of the condenser, and the heat exchange component includes a distribution main pipe, a drainage main pipe, and a plurality of heat exchange plates arranged between the distribution main pipe and the drainage main pipe. The distribution main pipe is connected to the refrigerant inlet, and the drainage main pipe is connected to the refrigerant outlet. A heat exchange channel is defined between two adjacent heat exchange plates. A plurality of distribution ports are provided on the distribution main pipe, and the plurality of distribution ports correspond to and are connected with the plurality of heat exchange channels one by one. The plurality of distribution ports gradually increase in size in the direction away from the refrigerant inlet. A plurality of liquid return ports are provided on the drainage main pipe, and the plurality of liquid return ports correspond to and are connected with the plurality of heat exchange channels one by one.

9. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to claim 8, characterized in that: The distance between two adjacent distribution ports is defined as W, and the cross-sectional area of ​​the distribution main pipe is defined as A, and the relationship is satisfied: A / 30<W<A / 20.

10. The tower-cooled magnetic suspension multi-connected pumping refrigeration system according to any one of claims 1 to 9, characterized in that: The refrigeration system has a first mode, a second mode and a third mode; In the first mode, the ambient temperature of the condenser is higher than a preset range value, and all the refrigerant in the equalizer flows to the magnetic levitation compressor for compression, and the compressed refrigerant flows to the condenser; In the second mode, the ambient temperature of the condenser is lower than a preset range value, and all the refrigerant in the equalizer flows directly to the condenser; In the third mode, the ambient temperature of the condenser is within a preset range, a portion of the refrigerant in the equalizer flows to the magnetic levitation compressor, and another portion flows to the condenser.

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